JP7680945B2 - Building space evaluation device, evaluation method, and program - Google Patents

Description

The present invention relates to a building space evaluation device, evaluation method, and program for evaluating a building space environment.

From the perspective of increasing real estate value and improving the quality of the working space that managers provide to their employees, it is becoming increasingly important to evaluate the space inside a building as a wellness environment in terms of comfort, health, and productivity (see Patent Document 1).

Conventionally used standardized evaluation indices (e.g. comfort indices such as PMV) are average indices based on statistical approaches, and therefore often deviate from the actual spatial evaluations of actual residents, whose perceptions vary.

Therefore, questionnaire surveys are conducted on an ongoing basis, for example several times a year, targeting the residents who actually use the building (surveys of subjective evaluations of comfort and satisfaction with the building space, resident productivity, etc.), and the building spatial environment (living environment) is sometimes adjusted based on the results of the questionnaire surveys. As such, questionnaire surveys provide important information that influences the building spatial environment, and therefore constant improvements are required to ensure that they are appropriate surveys.

JP 2021-96683 A

The present invention has been made to solve the above problems, and aims to provide a building space evaluation device, evaluation method, and program that can improve the validity of evaluation data for building space environments and achieve more appropriate evaluation of building space environments.

The building space evaluation device of the present invention comprises a usage status evaluation unit configured to determine the effectiveness of stay, which is an indicator of whether a user is suitable as an evaluator to evaluate one or more usage spaces within a building, based on actual usage information for each user regarding the usage spaces during the evaluation period, a questionnaire response information acquisition unit configured to acquire questionnaire responses regarding the environment of the usage space during the evaluation period, and a questionnaire evaluation unit configured to evaluate the questionnaire responses based on the effectiveness of stay of a user who is the same person as the user who answered the questionnaire , and is characterized in that the usage status evaluation unit calculates the total stay time for each user in the usage space during the evaluation period based on the actual usage information, and determines the effectiveness of stay for each user based on the total stay time.
In addition, in one configuration example of the building space evaluation device of the present invention, the usage status evaluation unit calculates, in addition to the total stay time, the total number of days of stay for each user in the usage space during the evaluation period based on the usage status information, and determines the stay effectiveness for each user based on the total stay time and the total number of days of stay.

In addition, one configuration example of the building space evaluation device of the present invention further includes a building space thermal environment information acquisition unit configured to acquire thermal environment information of the usage space during the evaluation period, and the usage status evaluation unit determines an invalid stay period during the evaluation period for each usage space based on the thermal environment conditions under which the user's stay in the usage space is considered valid and the thermal environment information, calculates a total stay time for each user in the usage space during the evaluation period based on the usage status information, calculates the time excluding the invalid stay period from the total stay time, and determines the effectiveness of stay for each user based on the time excluding the invalid stay period from the total stay time .

Furthermore, in one configuration example of the building space evaluation device of the present invention, the usage status evaluation unit calculates, in addition to the time obtained by excluding the invalid stay periods from the total stay time, the total number of days of stay for each user in the usage space during the evaluation period based on the usage status information, and determines the effectiveness of stay for each user based on the time obtained by excluding the invalid stay periods from the total stay time and the total number of days of stay.
In addition, one configuration example of the building space evaluation device of the present invention further includes a building space thermal environment information acquisition unit configured to acquire thermal environment information of the usage space during the evaluation period, and the usage status evaluation unit determines an invalid stay period during the evaluation period for each usage space based on the thermal environment conditions under which the user's stay in the usage space is considered valid and the thermal environment information, calculates a total stay time for each user in the usage space during the evaluation period based on the usage status information, calculates the time obtained by excluding the invalid stay period from the total stay time, and determines the validity of stay for each user based on the total stay time and the time obtained by excluding the invalid stay period from the total stay time.

In addition, in one configuration example of the building space evaluation device of the present invention, the usage status evaluation unit is characterized in that it excludes the stay time of a day on which the user's daily stay time falls below a predetermined time from the calculation of the total stay time.
In addition, in one configuration example of the building space evaluation device of the present invention, the usage status evaluation unit is characterized in that it excludes the stay time of a day on which the user's daily stay time falls below a predetermined time from the calculation of the total stay time and the total number of days of stay.
In addition, in one configuration example of the building space evaluation device of the present invention, the questionnaire evaluation unit is characterized in that it groups users based on the stay effectiveness and calculates statistics of the questionnaire responses for each group of users.
In one configuration example of the building space evaluation device of the present invention, the questionnaire evaluation section weights a statistical amount of the questionnaire responses by the effectiveness of stay.

In addition, the present invention provides a building space evaluation method for evaluating a building space environment using a computer having a CPU and a storage device, which includes a first step of determining a stay effectiveness, which is an indicator of whether a user is suitable to evaluate one or more usage spaces within a building based on actual usage information for each user regarding the usage spaces during the evaluation period, a second step of obtaining questionnaire responses to the environment of the usage space during the evaluation period, and a third step of evaluating the questionnaire responses based on the stay effectiveness of a user who is the same person as the user who answered the questionnaire, according to a program stored in the storage device, and the first step includes a step of calculating a total stay time for each user in the usage space during the evaluation period based on the actual usage information, and determining the stay effectiveness for each user based on the total stay time .
Furthermore, in one configuration example of the building space evaluation method of the present invention, the CPU executes a fourth step of acquiring thermal environment information of the usage space before the first step, and the first step is characterized in that it includes a step of determining an invalid stay period during the evaluation period for each usage space based on the thermal environment conditions under which the user's stay in the usage space is considered valid and the thermal environment information, calculating a total stay time for each user in the usage space during the evaluation period based on the actual usage information, calculating the time excluding the invalid stay period from the total stay time, and determining the validity of stay for each user based on the time excluding the invalid stay period from the total stay time .
Furthermore, in one configuration example of the building space evaluation method of the present invention, the CPU executes a fourth step of acquiring thermal environment information of the usage space before the first step, and the first step is characterized in that it includes a step of determining an invalid stay period during the evaluation period for each usage space based on the thermal environment conditions under which the user's stay in the usage space is considered valid and the thermal environment information, calculating a total stay time for each user in the usage space during the evaluation period based on the actual usage information, calculating the time obtained by excluding the invalid stay period from the total stay time, and determining the validity of stay for each user based on the total stay time and the time obtained by excluding the invalid stay period from the total stay time.
Further, a building space evaluation program according to the present invention is characterized in that it causes a computer to execute each of the above steps.

According to the present invention, by reflecting information on the actual usage of each user regarding the space used in the questionnaire responses regarding the environment of the space used, it is possible to reduce the factors of uncertainty (noise components) in users' spatial evaluations that arise due to differences in actual usage, thereby improving the validity of the evaluation data for the building space environment and realizing a more appropriate evaluation of the building space environment.

FIG. 1 is a block diagram showing the configuration of a building space evaluation device according to a first embodiment of the present invention. FIG. 2 is a flowchart for explaining the operation of the building space evaluation device according to the first embodiment of the present invention. FIG. 3 is a diagram showing an example of building space utilization information according to the first embodiment of the present invention. FIG. 4 is a diagram showing an example of stay effectiveness information according to the first embodiment of the present invention. FIG. 5 is a diagram showing an example of the usage status information according to the first embodiment of the present invention. FIG. 6 is a diagram for explaining a method for calculating a total stay time according to the first embodiment of the present invention. FIG. 7 is a diagram for explaining a method for calculating the total length of stay according to the first embodiment of the present invention. FIG. 8 is a block diagram showing the configuration of a questionnaire system according to a first embodiment of the present invention. FIG. 9 is a flowchart for explaining the operation of the questionnaire system according to the first embodiment of the present invention. FIG. 10 is a diagram showing an example of a questionnaire according to the first embodiment of the present invention. FIG. 11 is a diagram showing an example of the questionnaire response information according to the first embodiment of the present invention. FIG. 12 is a diagram showing an example of a questionnaire evaluation result according to the first embodiment of the present invention. FIG. 13 is a block diagram showing the configuration of a building space evaluation device according to a second embodiment of the present invention. FIG. 14 is a flowchart for explaining the operation of the building space evaluation device according to the second embodiment of the present invention. FIG. 15 is a plan view showing an example of an evaluation target space and a subdivided section according to the second embodiment of the present invention. FIG. 16 is a diagram showing an example of seat usage history information and an example of building space usage information according to the second embodiment of the present invention. FIG. 17 is a diagram showing an example of the usage status information according to the second embodiment of the present invention. FIG. 18 is a block diagram showing the configuration of a building space evaluation device according to a third embodiment of the present invention. FIG. 19 is a flowchart for explaining the operation of the building space evaluation device according to the third embodiment of the present invention. FIG. 20 is a diagram showing an example of a valid stay period and an invalid stay period according to the third embodiment of the present invention. FIG. 21 is a diagram showing an example of calculation of the total stay time taking into account the thermal environment history according to the third embodiment of the present invention. FIG. 22 is a block diagram showing an example of the configuration of a computer that realizes the building space evaluation device and the questionnaire system according to the first to third embodiments of the present invention.

[Principle 1 of the Invention]
When conducting a questionnaire survey of building spatial environments targeting building users, surveying a larger number of users leads to a better understanding of the overall evaluation of building users. However, the survey results contain not only differences in individual perceptions of the building spatial environment, which is the original purpose of the survey, but also uncertainty due to the actual usage of the building. The inventor focused on this point and found room for improvement.

For example, even if the same user uses the same building space, the comfort of the space is likely to be evaluated differently if the user stays for a short period of one hour compared to if the user stays for eight hours. In the case of a short stay, the influence of the outdoor environment and conditions to which the user was exposed prior to use is relatively greater than the thermal environment of the space.

In recent years, flextime systems, telework-combined working systems, and even free address work styles have become increasingly common in offices, and it is not uncommon for employees in the same office to have significantly different usage patterns for the building, such as the amount of time they spend in the building and where they stay. Such disparities in user usage patterns become a source of uncertainty (noise components) for each user's evaluation of the space. If the disparities in user usage patterns are large, the noise components will become larger, and it is highly likely that the evaluation results of the questionnaire survey data will not lead to effective environmental improvement measures.

The inventors therefore came up with the idea that by incorporating information about the actual usage of a building into the user questionnaire evaluation of the building's spatial environment, it would be possible to reduce the sources of uncertainty (noise components) in spatial evaluation and increase the validity of the evaluation results.

[Principle 2 of the Invention]
Even when the same user uses the same building space, if the user stays in an environment that is significantly different from the thermal environment during normal air conditioning operation, for example, when the air conditioning system is started up, stopped, or there is a problem, the user's evaluation of the comfort of the space is likely to differ significantly. Therefore, it would be even more preferable if the user's evaluation of the building space environment could reflect the thermal environment history of the space (for example, (room temperature - reference temperature) x length of stay)).

[First embodiment]
An embodiment of the present invention will be described below with reference to the drawings. The present invention utilizes the actual usage of a building and the thermal history of the space used. The present invention can be implemented when usage information (information indicating the stay status such as entering and leaving, entering and leaving, sitting and leaving) of a building or any section within a building (may be a seat) can be acquired from all or some of the respondents to a questionnaire survey, and when it is possible to correlate the survey responses with the stay information. The present invention does not evaluate surveys that are conducted without identifying respondents, such as anonymous surveys, and in which it is not possible to correlate the survey responses with the stay information.

In the present invention, any past period during which a questionnaire survey on building space usage was conducted is defined as the evaluation period, and the residential space within the building that was the subject of the questionnaire survey on building space usage is defined as the evaluation space. The evaluation space may be the entire building, one floor within the building, or a partial area within a floor. In the present invention, multiple sections set within the evaluation space are defined as subdivisions. For example, the subdivision may be one floor within a building for the entire building that is the evaluation space, or the evaluation space may be an entire floor and the subdivision may be one area within the floor.

In the present invention, the space to be evaluated is called the usage space. In some cases, both the space to be evaluated and the subdivided sections into which the space to be evaluated is subdivided are called the usage space. In this embodiment, the space to be evaluated is called the usage space. In a second embodiment described below, both the space to be evaluated and the subdivided sections are called the usage space. In a third embodiment described below, either the space to be evaluated is called the usage space, or both the space to be evaluated and the subdivided sections are called the usage space.

In this invention, an area is a unit of division that is set by a building manager according to the layout and use. Examples of areas include an office area, a conference room area, and a reception room area. It is also possible to set an area as a subdivision. However, while an area is set according to the layout and use, a subdivision is set for building evaluation. For this reason, one subdivision may correspond to multiple areas, or an area may be divided into subdivisions. In this way, a subdivision does not necessarily coincide with an area.

In this invention, information that can identify a building user is referred to as a user ID. The user ID can be associated with information on the user's entry and exit to the space to be evaluated and to subdivided sections. Examples of user IDs include a building user number for entrance and exit management, an email address, an employee number (in the case of a company's own building), and a company name + employee number (in the case of a building that houses multiple companies). For ease of explanation, in the following examples, the user ID is referred to as uIDXX (XX is an integer from 1 to N, and N is the number of building users).

In a first embodiment of the present invention, the effectiveness of stay, which is an indicator of whether the user is suitable to evaluate the space being evaluated, is determined from information on the user's actual usage of the space being evaluated (entrance/exit, usage history, etc.), and the results of questionnaire responses regarding the user's subjective feelings (comfort, satisfaction, productivity, etc.) regarding the environment of the space being evaluated over a certain period of time in the past are evaluated based on the effectiveness of stay.

In this example, the evaluation period is one month from July 1 to July 31, 2021, and the evaluation space is the entire living space of five-story building A.

Figure 1 is a block diagram showing the configuration of a building space evaluation device according to this embodiment. The building space evaluation device 1 includes a building space usage information acquisition unit 10 that acquires building space usage information of users regarding the usage space, a usage status management unit 11 that generates usage status information for each user regarding the usage space during the evaluation period based on the building space usage information and determines the stay effectiveness for each user, which is an index of whether the user is suitable as an evaluator for evaluating the usage space, based on the usage status information, a questionnaire response information acquisition unit 12 that acquires questionnaire responses to the environment of the usage space during the evaluation period, a questionnaire evaluation unit 13 that evaluates the questionnaire responses based on the stay effectiveness of users who are the same as the users who answered the questionnaire, and an evaluation result presentation unit 14 that presents the evaluation results by the questionnaire evaluation unit 13 to an operator such as a manager.

Figure 2 is a flowchart explaining the operation of the building space evaluation device 1 of this embodiment. The building space usage information acquisition unit 10 of the building space evaluation device 1 acquires building space usage information of users regarding the space to be evaluated (Figure 2, step S100).

[Explanation of building space usage information]
The building space usage information includes information identifying a user of the building space and information on the user's stay history (in this embodiment, the date and time of entry and exit of building A) in the space to be evaluated (in this embodiment, building A). The building space usage information can be acquired from a security system that manages entry and exit to the space to be evaluated, or a labor management system that manages the attendance of users (if the user works in the space to be evaluated). The labor management system is disclosed in, for example, Japanese Patent No. 5237464. These security systems and labor management systems identify users using general personal authentication methods such as security cards, face authentication, and fingerprint authentication that are required when entering and exiting the space to be evaluated, and manage the entry and exit of the users.

Figure 3 shows an example of building space usage information (entrance/exit information for Building A). In this embodiment, uIDm (m = 1 to N, N is the total number of users) such as uID1, uID2, etc. are used as user IDs and are used as information to identify users. Building space usage information can take a variety of formats depending on the security system and labor management system used in the space to be evaluated, but includes information to identify users, information on the date and time of entry and exit of the user, and information on the type of entry/exit (or entry/exit).

The utilization status management unit 11 of the building space evaluation device 1 is composed of a utilization status information generation unit 11-1 and a utilization status evaluation unit 11-2.
The usage status information generation unit 11-1 acquires building space usage information from the building space usage information acquisition unit 10, and generates usage status information for each user (each user ID) regarding the space to be evaluated based on the building space usage information (step S101 in FIG. 2).

Then, the usage status evaluation unit 11-2 determines the effectiveness of stay α for each user (each user ID) based on the usage status information generated by the usage status information generation unit 11-1 and the preset usage status evaluation conditions, and stores the determined effectiveness of stay information (step S102 in FIG. 2). FIG. 4 is a diagram showing an example of effectiveness of stay information.

[Description of Usage Status Information Generated by Usage Status Information Generation Unit 11-1]
The usage status information generation unit 11-1 uses the building space usage information to generate usage information of the evaluation target space over the entire evaluation target period as usage status information for each user. An example of the usage status information is shown in FIG. 5. FIG. 5 shows an example of usage status information for users with user IDs uID1, uID2, and uID3. Note that the information for July 1, 2021 was extracted from the building space usage information shown in FIG. 3.

According to Figure 5, it can be seen that a user with user ID uID3 entered Building A at 8:55 on July 1, 2021, left Building A at 11:54, then re-entered Building A at 13:02 on the same day and left at 18:42. In this way, the actual usage information reveals the date, time and time period when each user stayed in Building A.

In the example of Figure 5, the data is separated for each user, and the usage information consists of two columns (entry date and time, exit date and time), but it is of course possible to add a column for the user ID and generate data consisting of three columns (user ID, entry date and time, exit date and time). The usage information can take a variety of formats, but it is sufficient if it corresponds to the user ID and the date and time of entry and exit to the space being evaluated.

[Explanation of the usage status evaluation conditions set in the usage status evaluation unit 11-2]
The method of determining the stay effectiveness α is registered in advance as a usage evaluation condition in the usage evaluation unit 11-2 by the solution provider or the administrator of the evaluation target space. The usage evaluation unit 11-2 determines the stay effectiveness α according to the usage evaluation condition. The stay effectiveness α is an index of whether a user who has experience of using (staying) the evaluation target space during the evaluation target period is suitable as an evaluator for evaluating the evaluation target space, and is a real number equal to or greater than 0.

In this embodiment, the method of calculating the total stay time SH for each user in the evaluation space (building A) during the evaluation period (July 1 to July 31, 2021) and determining the stay effectiveness α for each user using the following formula (1) is preregistered in the usage status evaluation unit 11-2 as a usage status evaluation condition.

Formula (1) means that when the total stay time SHm of user m, whose user ID is uIDm (m = 1 to N, N is the total number of user IDs), in the evaluation space during the evaluation period is less than 30 hours, the effective stay degree αm of user m is set to 0 (inappropriate for the evaluator), and when the total stay time SHm is 30 hours or more, the effective stay degree αm of user m is set to 1 (appropriate for the evaluator).

The usage status evaluation unit 11-2 also has a method for calculating the total stay time SH registered in advance. FIG. 6 is a diagram for explaining the method for calculating the total stay time SH. In the example of FIG. 6, the usage status evaluation unit 11-2 calculates the total stay time SH using the usage status information shown in FIG. 5. Specifically, the usage status evaluation unit 11-2 regards the entry date and time and the exit date and time for each data row of the usage status information as the stay time in the evaluated space, and regards the total stay time during the evaluation period calculated for each user as the total stay time SH.

For example, in an office building where working hours are from 9:00 to 17:00, if we assume that an appropriate evaluator is an office worker who has actually worked there for at least one week during the one-month evaluation period, assuming that the daily working hours excluding lunch and break times are six hours, and that the normal number of working days per week is five days with two days off per week, then a user whose total stay time SH in the evaluation space is 30 hours or more and who stays there for five days or more is considered to be an appropriate evaluator. When it is desired to increase the stay effectiveness α of users who meet these conditions, the method for determining the stay effectiveness α (actual usage evaluation condition) is, for example, as shown in formula (2).

Equation (2) means that when the total stay time SHm of user m in the evaluation target space during the evaluation target period is 30 hours or more and the total number of stay days SDm in the evaluation target space during the evaluation target period is 5 days or more, the effective stay degree αm of user m is set to 1. The initial values of the effective stay degrees αm of each user m are all 0.
The effectiveness of stay α may be determined based on the total stay time. In this manner, the effectiveness of stay α may be determined based on the utilization status evaluation condition of formula (2) instead of formula (1).

Furthermore, if you want to lower the stay effectiveness α of a user whose daily stay time is short, such as a few hours, you can simply exclude the stay history data for days when the daily stay time was less than k hours (k is a predetermined time longer than 0) from the calculation of the total stay time SH and total number of days of stay SD. For example, in the example of Figure 7, the usage status evaluation unit 11-2 calculates the daily stay time for a user with user ID uID3 based on the usage status information. The daily stay time on days with no entry and exit history is 0 (0:00). The usage status evaluation unit 11-2 then determines the number of days for which the daily stay time is other than 0 as the total number of days of stay SD.

In this case, if the usage status evaluation unit 11-2 excludes the stay time of days on which the daily stay time is less than k hours from the calculation of the total stay time SH, it can lower the stay effectiveness α of users with short daily stay times when using the usage status evaluation conditions of formula (1) or (2). Also, if the usage status evaluation unit 11-2 sets the number of days on which the daily stay time is k hours or more as the total number of days of stay SD, it can lower the stay effectiveness α of users with short daily stay times when using the usage status evaluation conditions of formula (2).

The usage status evaluation unit 11-2 may also increase the usefulness of stay α if the ratio M/SD of the number of days M on which the daily stay time is less than k hours and the total number of days SD (including days on which the daily stay time is less than k hours) is equal to or less than a certain threshold.

Note that the above stay effectiveness α is always 0 or 1, but it may also be determined as a continuous value, for example, as shown in the following formula (3).

Equation (3) means that when the total stay time SHm of user m in the evaluation space during the evaluation period is less than 20 hours, the effectiveness of stay αm of user m is set to 0, when the total stay time SHm is between 20 and 40 hours, the effectiveness of stay αm is calculated as (SHm-20)/20, and when the total stay time SHm is more than 40 hours, the effectiveness of stay αm is set to 1.

Next, the questionnaire response information acquisition unit 12 of the building space evaluation device 1 acquires the user's questionnaire response information for the space to be evaluated during the evaluation period from the questionnaire system (step S103 in FIG. 2). The questionnaire response information is information that associates information that identifies the questionnaire respondent with the answer result. The questionnaire response information may be information that has been digitized from the paper questionnaire results, but in this embodiment, it is information held in the questionnaire system.

Figure 8 is a block diagram showing the configuration of the questionnaire system according to this embodiment. The questionnaire system 2 is composed of an implementation setting unit 20, an answer request sending unit 21, a question setting unit 22, an answer sheet generating and presenting unit 23, and an answer storage unit 24.

In the question setting unit 22, questions and answer options for a questionnaire are set in advance by a person who conducts a questionnaire regarding the evaluation target space.
In the implementation setting unit 20, general information required for implementing the survey, such as information on the respondents to be requested to complete the survey and information on the period during which the survey will be conducted, is preset by the person implementing the survey.

Since this is a questionnaire for evaluating the space to be evaluated, the respondents are at least a portion of the users who can use the space to be evaluated. The information on the respondents includes information to identify the respondents, such as the contact address (email address, phone number, etc.) of the respondent to notify them of how to access the questionnaire, and their name, affiliation, and login ID required to access the questionnaire. In this embodiment, an example will be described in which a user ID is set as the login ID.

Figure 9 is a flow chart explaining the operation of the survey system 2. For example, when an operator gives an instruction to conduct a survey, or when the survey implementation period preset in the implementation setting unit 20 arrives, the response request sending unit 21 of the survey system 2 sends guidance information to the respondent's contact address preset in the implementation setting unit 20, informing them of the method for accessing the survey, the response period, etc. (Figure 9, step S200).

When the survey system 2 is accessed from a respondent's terminal (PC, tablet terminal, smartphone, etc.) during the survey period (YES in step S201 in FIG. 2), the answer sheet generating and presenting unit 23 of the survey system 2 displays an access screen on the respondent's terminal (step S202 in FIG. 9). The answer sheet generating and presenting unit 23 may display the access screen on a web page accessible by a web browser running on the respondent's terminal, or may display the access screen using survey application software pre-installed on the respondent's terminal.

The respondent operates the terminal to input a login ID (user ID) on the access screen and starts answering the questionnaire (step S203 in FIG. 9).
The answer sheet generating and presenting unit 23 displays the questionnaire on the respondent's terminal in accordance with the information preset in the question setting unit 22 (FIG. 9, step S204). The respondent operates the terminal to input answers to the questionnaire.

When the answering is completed (YES in step S205 in FIG. 9), the answer storage unit 24 of the survey system 2 associates the respondent identification information (user ID) with the survey answer result and stores it as survey answer information (step S206 in FIG. 9). However, as described below, instead of the user ID, the respondent's email address, etc. may be used as the respondent identification information.

When a response request is received from the questionnaire response information acquisition unit 12 of the building space evaluation device 1 (YES in step S207 in FIG. 9), the response holding unit 24 transmits the questionnaire response information for the evaluation period specified by the questionnaire response information acquisition unit 12 from among the questionnaire response information held by the questionnaire response information acquisition unit 12 to the questionnaire response information acquisition unit 12 (step S208 in FIG. 9).

The questions in the questionnaire may be general, asking about comfort, satisfaction, productivity, etc. for the entire space being evaluated or for a portion of the space. An example of a questionnaire is shown in Figure 10, and an example of the questionnaire response information is shown in Figure 11. In the example of Figure 11, the questionnaire response information associates the question number (Q1 to Q5), the answer number to the question (1 to 5), and information identifying the respondent (user ID).

In this embodiment, for simplicity, it is assumed that all building users with a user ID are set as respondents to the survey, and all of them have responded to the survey (survey responses are stored for all user IDs). Since the actual survey return rate is not 100%, it goes without saying that the survey responses of user IDs who have not responded are not evaluated.

Next, the questionnaire evaluation unit 13 of the building space evaluation device 1 acquires the stay effectiveness information from the utilization evaluation unit 11-2 and also acquires the questionnaire response information from the questionnaire response information acquisition unit 12, associates the stay effectiveness α included in the stay effectiveness information with the questionnaire responses by the user ID, and evaluates the questionnaire responses based on the stay effectiveness α (Figure 2, step S104).

In addition, when an email address is used as the respondent identification information of the questionnaire response information, or when something other than a user ID is used, the respondent identification information such as an email address must be converted into a user ID. In this case, the questionnaire evaluation unit 13 has a correspondence table between respondent identification information such as an email address and a user ID set in advance. The questionnaire evaluation unit 13 refers to the correspondence table and converts the respondent identification information such as an email address into a user ID, and then performs the subsequent processing.
In this embodiment, the following two examples will be given as specific examples of the evaluation of the questionnaire responses.

[First evaluation example of questionnaire response evaluation]
In the first evaluation example, the questionnaire evaluation unit 13 groups users based on the value of the stay effectiveness α, and performs tabulation and statistical evaluation of the questionnaire responses for each group. A general method may be adopted as the grouping method. For example, there is a method of extracting a group of building users with a specific value of the stay effectiveness α as a group to be evaluated, a method of setting one or more thresholds for the stay effectiveness α and grouping according to the value of the stay effectiveness α, and a method of grouping by a general clustering method.

For example, if the group of users with validity of stay α=1 in the validity of stay information shown in Figure 4 is the group to be evaluated, then users with user IDs uID1, uID3, uID5, uID6, uID8, uID9, ... will be the subjects of evaluation of the questionnaire responses.
The questionnaire evaluation unit 13 calculates statistics such as the frequency of each answer number and the average value of the answer numbers for each question for the questionnaire answers of the respondents who are the same person as the user who was evaluated (respondents with the same user ID as the user who was evaluated).

When the stay effectiveness α is determined as a continuous value as in formula (3), the survey evaluation unit 13 classifies, for example, users whose stay effectiveness α is less than 0.5 into group I, users whose stay effectiveness α is 0.5 or more and less than 0.7 into group II, and users whose stay effectiveness α is 0.7 or more into group III. The survey evaluation unit 13 then calculates statistics for each group, such as the frequency of each answer number for each question and the average value of the answer numbers, for the survey answers of the respondents who are the same person as the user to be evaluated.

According to the first evaluation example described above, an operator such as a manager who sees the survey responses after evaluation can compare the statistics of the survey responses of each group and can know how the response results change depending on the difference in the usefulness of stay α (stay time).

Figure 12 shows an example of the survey evaluation results. In the example of Figure 12, the frequency of each answer number 1 to 5 for question Q1 shown in Figure 10 was calculated for each group I to III, and the relative frequency is shown, which is calculated by normalizing each frequency by the maximum value of all the frequencies.

Looking at the results in Figure 12, an operator can see that the smaller the stay effectiveness α is, the more the position of the maximum relative frequency tends to move toward the dissatisfied side. One possible reason for this tendency is that, for example, a weakly air-conditioned environment is provided for users who stay for long periods in the summer, but for users who enter the building from the hot outdoors and leave after a short time, dissatisfaction with the "heat" is difficult to alleviate. Looking at results like those in Figure 12, an operator can proceed with considering environmental improvements for the space being evaluated.

[Second evaluation example of questionnaire response evaluation]
In the second evaluation example, the questionnaire evaluation unit 13 weights the statistics of the questionnaire responses by the effective stay α. For example, when calculating the average value of the answer numbers for each question, the questionnaire evaluation unit 13 calculates the weighted average value AVE by the effective stay α of the same user as the questionnaire respondent, as shown in Formula (4).

As described above, uIDm (m = 1 to N, N is the total number of users) is the user ID of the user, αm is the usefulness of stay of the user with user ID uIDm, and Ans(uIDm) is the survey response number of the user with user ID uIDm. The survey evaluation unit 13 performs calculations such as formula (4) for each question in the survey response.

According to the second evaluation example above, by weighting the statistics of the survey responses by the usefulness of stay α, it becomes possible to evaluate the responses of respondents who stayed in the evaluated space for a longer period of time.

Next, the evaluation result presentation unit 14 of the building space evaluation device 1 presents the evaluation results by the questionnaire evaluation unit 13 to an operator such as a manager (step S105 in FIG. 2). The presentation (display) method may be a general method such as notification by email to the operator's PC or smartphone, or a screen display. The presentation (display) format may also be a general format such as a numerical display, a table format, or a graph display (FIG. 12).

As described above, in this embodiment, by reflecting information on actual usage by users in the results of a questionnaire given to users of the space to be evaluated, it is possible to reduce factors of uncertainty (noise components) in users' evaluations of the space that arise due to disparities in actual usage, and to increase the validity of the evaluation data for the building spatial environment.

[Second embodiment]
Next, a second embodiment of the present invention will be described. In the second embodiment of the present invention, a stay effectiveness, which is an index of whether or not a user is suitable as an evaluator for evaluating the evaluation space and the subdivided sections, is determined for each of the evaluation space and the subdivided sections based on the usage status information of the user of the evaluation space and the subdivided sections, and the results of questionnaire responses regarding the user's subjective feelings (comfort, satisfaction, productivity, etc.) regarding the environment of the evaluation space and the subdivided sections for a certain period of time in the past are evaluated for each space of the evaluation space and the subdivided sections based on the stay effectiveness.

Figure 13 is a block diagram showing the configuration of a building space evaluation device according to this embodiment. The building space evaluation device 1a according to this embodiment includes a building space usage information acquisition unit 10a that acquires building space usage information of users regarding the evaluation target space and the subdivided sections, a usage status management unit 11a that generates usage status information for each user regarding the evaluation target space and the subdivided sections during the evaluation target period based on the building space usage information and determines the stay effectiveness for each usage space and for each user based on the usage status information, a questionnaire response information acquisition unit 12, a questionnaire evaluation unit 13a that evaluates the questionnaire responses for each usage space based on the stay effectiveness of the same user as the questionnaire respondent, and an evaluation result presentation unit 14.

This is basically the same as the first embodiment except that it also covers subdivided areas, so only the differences from the first embodiment will be explained.

Figure 14 is a flowchart explaining the operation of the building space evaluation device 1a of this embodiment. The building space usage information acquisition unit 10a of the building space evaluation device 1a acquires the building space usage information of the user regarding the subdivision zone Zq (q is an integer between 1 and q and P, P is the number of subdivision zones, and is an integer of 2 or more) in addition to the building space usage information of the user regarding the evaluation target space (hereinafter, the evaluation target space Z0) (Figure 14, step S100a).

[Explanation of building space usage information of subdivision Zq]
Fig. 15 is a plan view showing an example of an evaluation target space and a subdivided section. In the example of Fig. 15, an office on the fifth floor of building A is set as the evaluation target space Z0. The evaluation target space Z0 is provided with a conference room area R1, a reception room area R2, and a work area R3. In Fig. 15, DO1 is an automatic door that is the entrance and exit of the evaluation target space Z0, DO2 is the door of the conference room area R1, DO3 is the door of the reception room area R2, W is a window, and S1 to S24 are seats in the work area R3.

A security system is installed in the evaluation space Z0 to manage users' passage through doors DO1 to DO3, thereby making it possible to manage users' entry and exit to the evaluation space Z0, the conference room area R1, and the reception room area R2.

In addition, three subdivisions Z1 to Z3 are set in the evaluation target space Z0 by an operator, such as an administrator conducting a questionnaire survey. Subdivision Z1 is the same area as conference room area R1. Therefore, it is possible to obtain information on users' entry and exit to conference room area R1, which is managed by the security system, as building space usage information of users regarding subdivision Z1.

The area of seats S1 to S16 in work area R3 is set as subdivision Z2, and the area of seats S17 to S24 is set as subdivision Z3. In the office of the evaluation target space Z0, seats S1 to S24 are not fixed seats but are free address seats. Free address offices often have seat management systems that can obtain usage history information (when and who used seats S1 to S24). Usage history information is used, for example, to check the safety of employees in an emergency or to stimulate communication between employees.

Therefore, if information on the correspondence between seats S1-S24 and subdivided sections Z2 and Z3 is registered in advance in the building space usage information acquisition unit 10a, it is possible to acquire usage history information for seats S1-S16 as building space usage information for users of subdivided section Z2, and usage history information for seats S17-S24 as building space usage information for users of subdivided section Z3. Information on the correspondence between the evaluation target space Z0, areas R1-R3, seats S1-S24, and subdivided sections Z1-Z3 is registered in advance in the building space usage information acquisition unit 10a by the solution provider or administrator.

Figure 16 (A) shows an example of usage history information for seats S1 to S24, and Figure 16 (B) shows an example of building space usage information for users related to subdivided sections Z2 and Z3, generated from this usage history information. As described above, based on the information on the correspondence between seats S1 to S24 and subdivided sections Z2 and Z3, the building space usage information acquisition unit 10a converts the seat numbers included in the usage history information into the numbers of the subdivided sections.

There are various formats for storing building space usage information, but it is sufficient if it contains information that identifies the used space (Z0 to Z3), information that identifies the user (user ID), and usage history (dates and times of start and end of usage) that are associated with each other.

The utilization status management section 11a of the building space evaluation device 1a is composed of a utilization status information generation section 11a-1 and a utilization status evaluation section 11a-2.
The actual usage information generation unit 11a-1 acquires building space usage information of the evaluation target space Z0 and the subdivided sections Z1 to Z3 from the building space usage information acquisition unit 10a, and generates actual usage information for each user (each user ID) for each of the evaluation target space Z0 and the subdivided sections Z1 to Z3 during the evaluation period based on the building space usage information (Figure 14 step S101a).

Figure 17 shows an example of actual usage information generated from the building space usage information shown in Figure 16 (B). In this embodiment, the actual usage information includes information that identifies the user, information on the usage history, and information that identifies the usage space (Z0 to Z3).

Then, the usage evaluation unit 11a-2 determines the stay effectiveness α for each user (each user ID) for the evaluation target space Z0 and the subdivided sections Z1 to Z3 based on the usage information generated by the usage information generation unit 11a-1 and the preset usage evaluation conditions, and stores the determined stay effectiveness information (FIG. 14, step S102a). In other words, information similar to the stay effectiveness information for the evaluation target space Z0 shown in FIG. 4 is also generated for each of the subdivided sections Z1 to Z3.

There are various formats for storing the stay effectiveness information, but it is sufficient that the information identifying the usage space (Z0 to Z3), the information identifying the user (user ID), and the stay effectiveness α are stored in association with each other.

In the usage status evaluation unit 11a-2 of this embodiment, in addition to the usage status evaluation conditions for the evaluation target space Z0 described in the first embodiment, usage status evaluation conditions for each of the subdivision sections Z1 to Z3 are registered in advance by the solution provider or administrator.
The method of determining the stay effectiveness α for each user in the evaluation target space Z0 is as described in the first embodiment.

The stay effectiveness α for each user for the subdivision sections Z1 to Z3 may be an indicator of whether a user who has experience using (staying in) the subdivision sections Z1 to Z3 during the evaluation period is suitable as an evaluator for evaluating the subdivision sections Z1 to Z3. The total stay time SH for each user in each subdivision section during the evaluation period is calculated, and the stay effectiveness α for each subdivision section may be determined using a method such as that illustrated in formulas (1) to (3) in the first embodiment. The actual usage evaluation conditions may of course be the same for all subdivision sections.

When determining the usefulness of stay α using formulas (1) to (3), as described in the first embodiment, the stay time on a day when the daily stay time is less than k hours may be excluded from the calculation of the total stay time SH and the total number of days of stay SD.

The operations of the questionnaire system 2 and the questionnaire response information acquisition unit 12 of the building space evaluation device 1a (steps S200 to S208, S103) are the same as those in the first embodiment.
The questionnaire evaluation unit 13a of the building space evaluation device 1a acquires stay effectiveness information for each user for the evaluation target space Z0 and each of the subdivided sections Z1 to Z3 from the actual usage evaluation unit 11a-2, and also acquires questionnaire response information from the questionnaire response information acquisition unit 12, associates the stay effectiveness α of the stay effectiveness information with the questionnaire responses by user ID, and evaluates the questionnaire responses for each of the evaluation target space Z0 and each of the subdivided sections Z1 to Z3 based on the stay effectiveness α (Figure 14 step S104a).

The method of evaluating the questionnaire responses regarding the evaluation target space Z0 based on the stay effectiveness α of each user regarding the evaluation target space Z0 is as described in the first embodiment.
To evaluate the questionnaire responses for each of the subdivision sections Z1 to Z3 based on the stay effectiveness α for each user for each of the subdivision sections Z1 to Z3, an evaluation such as that illustrated in the first evaluation example or the second evaluation example of the first embodiment may be performed for each subdivision section.

The evaluation result presentation unit 14 of the building space evaluation device 1a presents the evaluation results by the questionnaire evaluation unit 13a to an operator such as a manager, as in the first embodiment (FIG. 14, step S105).

As described above, in this embodiment, by reflecting the actual usage information of users for each usage space in the results of a survey of users of the evaluation target space Z0 and the subdivided sections Z1 to Z3, it is possible to reduce the factors of uncertainty (noise components) in users' spatial evaluations that arise due to disparities in actual usage, and to increase the validity of the evaluation data for the building spatial environment.

[Third Example]
Next, a third embodiment of the present invention will be described. In the third embodiment of the present invention, information on the actual use of the user's usage space (evaluation target space and subdivided sections) and information on the thermal environment of the usage space (thermal environment history information) are acquired, and the effectiveness of stay is determined for each usage space taking into account the thermal environment of each usage space, and the results of the users' subjective responses to a questionnaire regarding the environment of the usage space for a certain period of time in the past are evaluated for each usage space based on the effectiveness of stay.

Figure 18 is a block diagram showing the configuration of a building space evaluation device according to this embodiment. The building space evaluation device 1b according to this embodiment includes a building space usage information acquisition unit 10, a usage status management unit 11b that generates usage status information for each user regarding the usage space during the evaluation period based on the building space usage information and determines the stay effectiveness for each user based on the usage status information and thermal environment information, a questionnaire response information acquisition unit 12, a questionnaire evaluation unit 13, an evaluation result presentation unit 14, and a building space thermal environment information acquisition unit 15 that acquires thermal environment information of the usage space during the evaluation period.

This is the same as the first and second embodiments except that the stay effectiveness is determined based on the building space thermal environment information and taking into account the thermal environment history, so only the parts that differ from the first and second embodiments will be explained.

Figure 19 is a flowchart explaining the operation of the building space evaluation device 1b of this embodiment. The operation of the building space utilization information acquisition unit 10 of the building space evaluation device 1b (step S100 in Figure 19) is the same as in the first embodiment.

The building space thermal environment information acquisition unit 15 acquires building space thermal environment information during the evaluation period (step S106 in FIG. 19). When this embodiment is applied to the first embodiment, building space thermal environment information of the evaluation target space during the evaluation period is acquired, and when this embodiment is applied to the second embodiment, in addition to the building space thermal environment information of the evaluation target space during the evaluation period, building space thermal environment information for each subdivided section during the evaluation period is acquired.

[Explanation of building space thermal environment information]
The building space thermal environment information is historical information on the thermal environment of the space to be evaluated and the subdivided sections, and specifically, is information including the temperatures of the space to be evaluated and the subdivided sections. In this embodiment, it is historical information on the room temperature Tpv and room temperature set value Tsp of the air conditioning zones corresponding to the space to be evaluated and the subdivided sections. These can be obtained from the operation data of the air conditioning system installed in the space to be evaluated. As described above, when applying this embodiment to the first embodiment, it is necessary to obtain only the building space thermal environment information of the space to be evaluated.

When using data on air conditioning zones, there may be cases where the subdivided sections and the unit spaces of the air conditioning zones do not match. In such cases, the method of acquiring building space thermal environment information for each subdivided section can be preset in the building space thermal environment information acquisition unit 15.

Specifically, for example, if a subdivision includes multiple air conditioning zones K1, K2, and K3, historical information on the room temperature Tpv and room temperature set value Tsp of a predetermined representative air conditioning zone K2 may be acquired as building space thermal environment information for the subdivision, or historical information on the average room temperature Tpv and average room temperature set value Tsp of the three air conditioning zones K1, K2, and K3 may be acquired as building space thermal environment information for the subdivision.

Similarly, for the space to be evaluated, historical information on the average room temperature Tpv and the average room temperature set value Tsp of each air conditioning zone included in the space to be evaluated may be acquired as building space thermal environment information, or historical information on the room temperature Tpv and room temperature set value Tsp of a predetermined representative air conditioning zone may be acquired as building space thermal environment information.

The utilization status management section 11b of the building space evaluation device 1b is composed of a utilization status information generation section 11-1 and a utilization status evaluation section 11b-2.
The operation of the usage status information generating unit 11-1 (step S101 in FIG. 19) is the same as that in the first embodiment.

Then, the usage evaluation unit 11b-2 determines the stay effectiveness α for each user (each user ID) based on the usage information generated by the usage information generation unit 11-1, the building space thermal environment information acquired by the building space thermal environment information acquisition unit 15, and the pre-set usage evaluation conditions, and stores the stay effectiveness information (FIG. 19, step S102b).

[Explanation of the usage status evaluation conditions set in the usage status evaluation unit 11b-2]
A method for determining the effectiveness of stay by taking into account the thermal environment history of the usage space (the space to be evaluated and the subdivided sections) is registered in advance in the usage status evaluation unit 11b-2 by the solution provider or the administrator of the space to be evaluated as a usage status evaluation condition.

In this embodiment, similar to the first embodiment, the effectiveness of stay is determined based on the total stay time of each user in the usage space during the evaluation period, but at this time, thermal environment conditions are set that consider the user's stay in the usage space to be valid. For example, the condition of the following formula (5) is set as the thermal environment condition that considers a stay in a thermal environment where the air conditioning is appropriately controlled to the set value to be valid.

Equation (5) means that when the absolute value of the difference between the room temperature Tpv and the room temperature set value Tsp is equal to or less than a predetermined deviation threshold value γ, the stay flag Fs is set to 1 (stay valid), and when the absolute value of the difference between the room temperature Tpv and the room temperature set value Tsp is greater than the deviation threshold value γ, the stay flag Fs is set to 0 (stay invalid). An example of a valid stay period when Fs = 1 and an invalid stay period when Fs = 0 is shown in Figure 20.

Other examples of thermal environment conditions that enable a user to stay include a room temperature Tpv that is within a certain range without using a room temperature set value, or a general comfort index such as PMV (Predicted Mean Vote) or operative temperature calculated based on temperature history information. In such cases, the building space thermal environment information acquired by the building space thermal environment information acquisition unit 15 only needs to include the data necessary for calculating the comfort index.

The usage status evaluation unit 11b-2 determines the valid stay period and invalid stay period for each usage space throughout the entire evaluation period, and then calculates the total stay time SH for each user in each of the evaluation space and the subdivided sections during the evaluation period.

The method for calculating the total stay time SH is the same as that described in the first embodiment, but in this calculation process, the total stay time SH' is calculated for each user, excluding the invalid stay period determined by the thermal environment conditions. An example of the calculation of the total stay time SH' taking into account the thermal environment history in this embodiment is shown in Figure 21. However, the example in Figure 21 shows only a portion of the time period during the evaluation period for which the total stay time SH' is calculated.

When the user's stay time period is t1 in FIG. 21, stay time period t1 is within the valid stay period. Therefore, stay time period t1 is added as part of the total stay time SH'. Since the start of stay time period t2 is within the invalid stay period, the time obtained by subtracting the time period during the invalid stay period from stay time period t2 is added as part of the total stay time SH'.

In Figure 21, the time period t3 becomes an invalid stay period halfway through, so the time period excluding the time period during the invalid stay period from time period t3 is added as part of the total stay time SH'. The entirety of time period t4 falls within the invalid stay period. Therefore, time period t4 is excluded from the calculation of the total stay time SH'. The total stay time SH' that takes into account the thermal environment history as described above can be calculated for each user for the space to be evaluated and for each subdivided section.

Then, the usage status evaluation unit 11b-2 uses the total stay time SH' that takes into account the thermal environment history instead of the total stay time SH, and determines the stay effectiveness α for each user for each of the evaluation target space and the subdivided section in the manner exemplified by formulas (1) to (3) in the first embodiment.

In this embodiment, the method for determining the effectiveness of stay α only needs to take into account the thermal environment history, and the effectiveness of stay α may be determined, for example, as shown in formula (6).

Equation (6) means that when the total stay time SHm of user m with user ID uIDm is 30 hours or more, and the ratio of the total stay time SH'm considering the thermal environment history to the total stay time SHm of user m is 90% or more, the effective stay degree αm of user m is set to 1. The initial values of the effective stay degree αm of each user m are all 0.

When determining the usefulness of stay α using formulas (1) to (3) or (6), as described in the first embodiment, the stay time on a day when the daily stay time is less than k hours may be excluded from the calculation of the total stay time SH, SH' and the total number of days of stay SD.

The operations of the questionnaire response information acquisition unit 12, questionnaire evaluation unit 13, and evaluation result presentation unit 14 of the building space evaluation device 1b (steps S103 to S105 in FIG. 19) are the same as those in the first embodiment.

As described above, in this embodiment, by reflecting the actual usage information and thermal environment information of users for each used space in the results of a questionnaire survey of users of the evaluated space and the subdivided sections, it is possible to reduce factors of uncertainty (noise components) in users' spatial evaluations that arise due to disparities in the actual usage and thermal environments of the used spaces, and to increase the validity of the evaluation data for the building spatial environment.

In the above explanation, the present embodiment is mainly applied to the first embodiment, but the present embodiment may also be applied to the second embodiment. When applying the present embodiment to the second embodiment, a building space usage information acquisition unit 10a is provided instead of the building space usage information acquisition unit 10, a usage status information generation unit 11a-1 is provided instead of the usage status information generation unit 11-1, the usage status evaluation unit 11b-2 determines the stay effectiveness α for each user for each of the evaluation target space and the subdivided section, and a questionnaire evaluation unit 13a is provided instead of the questionnaire evaluation unit 13.

Each of the building space evaluation devices 1, 1a, 1b and the questionnaire system 2 described in the first to third embodiments can be realized by a computer equipped with a CPU (Central Processing Unit), a storage device, and an interface, and a program that controls these hardware resources. An example of the configuration of this computer is shown in FIG. 22.

The computer includes a CPU 200, a storage device 201, and an interface device (I/F) 202. In the case of the building space evaluation devices 1, 1a, and 1b, the I/F 202 is connected to the questionnaire system 2, a display device, a security system, a labor management system, an air conditioning system, etc. In the case of the questionnaire system 2, the I/F 202 is connected to the building space evaluation devices 1, 1a, and 1b, the respondent's terminal, etc.

A building space evaluation program for implementing the building space evaluation method of the present invention is stored in the storage device 201. The CPU 200 of each device executes the processing described in the first to third embodiments according to the program stored in the storage device 201.

The present invention can be applied to technology for evaluating building spatial environments.

1, 1a, 1b... Building space evaluation device, 2... Questionnaire system, 10, 10a... Building space usage information acquisition unit, 11, 11a, 11b... Usage status management unit, 11-1, 11a-1... Usage status information generation unit, 11-2, 11a-2, 11b-2... Usage status evaluation unit, 12... Questionnaire response information acquisition unit, 13, 13a... Questionnaire evaluation unit, 14... Evaluation result presentation unit, 15... Building space thermal environment information acquisition unit, 20... Implementation setting unit, 21... Answer request transmission unit, 22... Question setting unit, 23... Answer sheet generation and presentation unit, 24... Answer storage unit.

Claims (13)

A usage status evaluation unit configured to determine a stay effectiveness, which is an index of whether a user is suitable as an evaluator for evaluating one or more usage spaces in a building, based on usage status information for each user regarding the one or more usage spaces in the building during an evaluation period;
a questionnaire response information acquisition unit configured to acquire questionnaire responses regarding the environment of the usage space during the evaluation period;
a questionnaire evaluation unit configured to evaluate the questionnaire response based on the stay effectiveness of a user who is the same person as the questionnaire respondent ,
The building space evaluation device is characterized in that the usage status evaluation unit calculates the total stay time for each user in the usage space during the evaluation period based on the usage status information, and determines the stay effectiveness for each user based on the total stay time . 2. The building space evaluation device according to claim 1 ,
The building space evaluation device is characterized in that the usage status evaluation unit calculates, in addition to the total stay time, the total number of days of stay for each user in the usage space during the evaluation period based on the usage status information, and determines the stay effectiveness for each user based on the total stay time and the total number of days of stay. 2. The building space evaluation device according to claim 1,
A building space thermal environment information acquisition unit configured to acquire thermal environment information of the utilization space during the evaluation period,
The building space evaluation device is characterized in that the usage status evaluation unit determines invalid stay periods during the evaluation period for each usage space based on the thermal environment conditions under which the user's stay in the usage space is considered valid and the thermal environment information, calculates the total stay time for each user in the usage space during the evaluation period based on the usage status information, calculates the time excluding the invalid stay periods from the total stay time, and determines the effectiveness of stay for each user based on the time excluding the invalid stay periods from the total stay time . 4. The building space evaluation device according to claim 3 ,
The building space evaluation device is characterized in that the usage status evaluation unit calculates the total number of days of stay for each user in the usage space during the evaluation period based on the usage status information, in addition to the time obtained by excluding the invalid stay periods from the total stay time, and determines the effectiveness of stay for each user based on the time obtained by excluding the invalid stay periods from the total stay time and the total number of days of stay. 2. The building space evaluation device according to claim 1 ,
A building space thermal environment information acquisition unit configured to acquire thermal environment information of the utilization space during the evaluation period,
The building space evaluation device is characterized in that the usage status evaluation unit determines invalid stay periods during the evaluation period for each usage space based on the thermal environment conditions under which the user's stay in the usage space is considered valid and the thermal environment information, calculates the total stay time for each user in the usage space during the evaluation period based on the usage status information, calculates the time excluding the invalid stay periods from the total stay time, and determines the validity of stay for each user based on the total stay time and the time excluding the invalid stay periods from the total stay time. The building space evaluation device according to any one of claims 1 to 5 ,
The building space evaluation device is characterized in that the utilization status evaluation unit excludes the stay time on days when the user's daily stay time falls below a predetermined time from the calculation of the total stay time. 5. The building space evaluation device according to claim 2 ,
The building space evaluation device is characterized in that the usage status evaluation unit excludes the stay time on days when the user's daily stay time falls below a predetermined time from the calculation of the total stay time and the total number of days of stay. 2. The building space evaluation device according to claim 1 ,
The building space evaluation device, wherein the questionnaire evaluation unit groups users based on the usefulness of stay and calculates statistics of the questionnaire responses for each user group. 2. The building space evaluation device according to claim 1 ,
The building space evaluation device, wherein the questionnaire evaluation unit weights a statistical quantity of the questionnaire responses according to the usefulness of stay. A building space evaluation method for evaluating a building space environment by a computer having a CPU and a storage device, comprising:
A first step of determining a stay effectiveness, which is an index of whether a user is suitable as an evaluator for evaluating one or more spaces in a building, based on actual usage information for each user regarding the one or more spaces in the building during an evaluation period;
A second step of acquiring responses to a questionnaire regarding the environment of the usage space during the evaluation period;
a third step of evaluating the questionnaire response based on the effective stay of a user who is the same person as the questionnaire respondent, in accordance with a program stored in the storage device;
A building space evaluation method characterized in that the first step includes a step of calculating a total stay time for each user in the usage space during the evaluation period based on the actual usage information, and determining the stay effectiveness for each user based on the total stay time . The building space evaluation method according to claim 10 ,
The CPU executes a fourth step of acquiring thermal environment information of the utilization space before the first step;
The building space evaluation method, characterized in that the first step includes a step of determining an invalid stay period during the evaluation period for each usage space based on the thermal environment information and thermal environmental conditions under which the user's stay in the usage space is considered valid, calculating a total stay time for each user in the usage space during the evaluation period based on the actual usage information, calculating the time excluding the invalid stay period from the total stay time, and determining the validity of stay for each user based on the time excluding the invalid stay period from the total stay time . The building space evaluation method according to claim 10,
The CPU executes a fourth step of acquiring thermal environment information of the utilization space before the first step;
The building space evaluation method, characterized in that the first step includes a step of determining an invalid stay period during the evaluation period for each usage space based on the thermal environment information and thermal environmental conditions under which the user's stay in the usage space is considered valid, calculating a total stay time for each user in the usage space during the evaluation period based on the actual usage information, calculating the time excluding the invalid stay period from the total stay time, and determining the validity of stay for each user based on the total stay time and the time excluding the invalid stay period from the total stay time. A building space evaluation program for causing a computer to execute each step according to any one of claims 10 to 12 .

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