JP4830422B2 - Ventilation equipment - Google Patents

Description

  The present invention relates to a method for detecting the amount of activity of a person and a ventilator for adding and controlling a reference ventilation amount based on the detected amount of activity of the person.

  In recent years, in the control of ventilation fans, hydrogen, carbon monoxide, garbage odors, cooking odors generated by combustion equipment, and odors when people concentrate on specific places are controlled and prevented to ensure comfortable living spaces. There is a need for a ventilator that can do that. In addition, there is a social background, such as the mandatory installation of ventilation equipment in each room with the revision of the Building Standard Law.

  Conventionally, this type of air conditioner is known to accurately recognize the presence and number of occupants in the room and simultaneously determine their mode, control the air conditioning state according to the mode and simultaneously ventilate appropriately. (For example, refer to Patent Document 1).

  Hereinafter, the air conditioner will be described with reference to FIGS.

  As shown in FIGS. 23 and 24, a plurality of human body detection sensors 101 provided substantially linearly along the moving direction of the human body at the entrance of the room, a carbon dioxide sensor 102 for detecting carbon dioxide in the room, and a human body detection sensor First recognition means 103 that receives a signal from 101 and recognizes the entry / exit of the human body, second recognition means 104 that recognizes the presence of the human body from the carbon dioxide concentration sensed by the carbon dioxide sensor 102, and first recognition A determination unit 105 that receives the signal and the second recognition signal to determine the presence or absence of a human body, and includes a control unit 107 that receives the determination signal from the determination unit 105 and controls the air conditioner 106. And is configured to control air conditioning.

  In addition, as a control device for the ventilation device, it can optimally control the ventilation amount based on the amount of activity of the human body detected using a pyroelectric infrared sensor, and can maintain the indoor gas level at an appropriate level. A device that improves comfort is known (for example, see Patent Document 2).

  Hereinafter, the control device of the ventilation device will be described with reference to FIG.

  As shown in FIG. 25, a human body detecting means 108 comprising a pyroelectric infrared sensor for detecting the movement of a human body in the room and outputting a human body detection pulse signal, a first timer means 109 for measuring a predetermined time, The number of human body detection pulse signals is accumulated for a predetermined time by the first timer means 109, and the activity amount determination means 110 for determining the amount of activity of the human body according to the number of accumulated pulses, and the activity output from the activity amount determination means 110 First ventilation amount control means 111 that controls the ventilation amount according to the amount level signal is provided.

JP 2000-234782 A JP-A-8-75203

  Such a conventional air conditioner has a human body sensor and a carbon dioxide gas sensor in order to accurately detect the presence of the human body and the amount of activity, and there is a problem that the cost becomes high, and a constant amount of ventilation is always provided. Because it is not intended to be performed but is controlled from zero ventilation to maximum ventilation capacity, there is a problem that further cost increases due to the need to use it together with ventilation equipment at all times. It is required to control the ventilation rate at the same time as determining the presence and activity level of the stool.

  In addition, in such a conventional ventilator control device, it is necessary to always use in combination with ventilation equipment, and the amount of activity of the human body is detected only by the number of detected pulses within a predetermined time, and the distance traveled is There is a problem that it is not possible to specify accurately and it is not possible to control the ventilation volume according to the actual activity amount, more accurately detecting the movement of the person, calculating the activity amount, and at the same time satisfying the reference ventilation amount, and There is a demand for optimal ventilation control.

  The present invention solves such a conventional problem, and provides a ventilator capable of accurately detecting the amount of activity of a human body at low cost and performing addition control on a reference ventilation amount. It is aimed.

The ventilator according to the present invention adds an activity amount detecting means for detecting a person's activity amount and a reference ventilation amount corresponding to a room volume stored in advance according to the activity amount of the person detected by the activity amount detecting means. The activity amount detection means includes an infrared sensor having at least two different detection areas, and changes in the induced voltage of the infrared sensor in each area. Activity amount determination means for determining an activity amount from the amount is provided, and the activity amount of the person is determined from the generation timing of the minimum value in each region of the induced voltage of the infrared sensor.

  By this means, in order to determine the amount of activity directly from the amount of change in the induced voltage of the infrared sensor, it is possible to detect the amount of activity with a simple configuration without calculating the distance traveled or converted into human presence information, By adding the ventilation amount according to the detected activity amount to the reference ventilation amount, a ventilation device that is more inexpensive and excellent in comfort control can be obtained.

Even if the detection target area is wide, the amount of activity can be accurately determined from the arrangement of the infrared sensor in each area and the amount of time change of the induced voltage even when there is a movement across the detection area of the infrared sensor. Therefore, a ventilation device that can perform ventilation volume control with a simple configuration and high accuracy is obtained.

Furthermore, even if the detection target area is wide, it is possible to detect the activity amount with a simple configuration without requiring image processing in the detection of the activity amount of the infrared sensor in each region , and ventilation with higher accuracy. A ventilation device capable of volume control is obtained.

According to the present invention, the activity amount detecting means for detecting the activity amount of the person and the reference ventilation amount corresponding to the room volume stored in advance according to the activity amount of the person detected by the activity amount detecting means are added. It is a ventilation apparatus provided with the ventilation amount control means to control, Comprising: The said active mass detection means is an infrared sensor which has an at least 2 or more mutually different detection area | region, and the variation | change_quantity in each area | region of the induced voltage of the said infrared sensor The activity amount determination means for determining the activity amount from the infrared sensor, the activity amount of the person is determined from the generation timing of the minimum value in each region of the induced voltage of the infrared sensor, the induced voltage of the infrared sensor In order to determine the amount of activity directly from the amount of change, it is possible to detect the amount of activity with a simple configuration without calculating the distance moved or calculating the distance moved, and the detected amount of activity By adding Flip ventilation amount based ventilation can provide an excellent ventilation system more inexpensive and comfort control.

Further, even when the detection target area is wide, from the generation timing of the minimum value of the induced voltage in the arrangement and each region of the infrared sensor having different detection region in at least two or more of each other, the detection area of the infrared sensor It is possible to provide a ventilator that can accurately determine the amount of activity even when there is a stride movement, does not require image processing, and can perform highly accurate ventilation control with a simple configuration.

The block diagram of the ventilation apparatus in Embodiment 1 of this invention Flow chart of activity amount determination in the activity amount determination means 2 The figure which shows the table data of the activity amount determination Flow chart of the ventilation volume change control The figure which shows the table data for the same ventilation volume increase / decrease The block diagram of the ventilation apparatus in Embodiment 2 of this invention Flow chart of the activity amount determination means 2B The figure which shows the table data of the activity amount determination The block diagram of the ventilation apparatus in Embodiment 3 of this invention Flow chart of the activity amount determination means 2C The figure which shows the table data of the activity amount determination The block diagram of the ventilator in Embodiment 4 of this invention Flow chart of the second activity amount determination means 4 The figure which shows the table data of the activity amount determination The block diagram of the ventilator in Embodiment 5 of this invention Flow chart of the third activity amount determination means 5 The figure which shows the table data of the activity amount determination The block diagram of the ventilator in Embodiment 6 of this invention Flow chart of the fourth activity amount determination means 6 The figure which shows the table data of the activity amount determination The block diagram of the ventilator in Embodiment 7 of this invention Field of view of the Fresnel lens 7 Configuration diagram of conventional air conditioner Layout of human body sensor Configuration diagram related to conventional ventilator control device

The invention according to claim 1 of the present invention is an activity amount detection means for detecting a person's activity amount, and a reference ventilation volume corresponding to a room volume stored in advance according to the activity amount of the person detected by the activity amount detection means. The activity amount detecting means includes at least two infrared sensors having different detection areas and an induced voltage of the infrared sensor. It comprises an activity amount determination means for determining an activity amount from the amount of change in each region , and the activity amount of the person is configured to be determined from the occurrence timing of the minimum value in each region of the induced voltage of the infrared sensor, Because the amount of activity is determined directly from the amount of change in the induced voltage of the infrared sensor, it is possible to detect the amount of activity with a simple configuration, without converting it into information on the presence or absence of a person or calculating the distance traveled. By adding a reference ventilation minute ventilation corresponding to the detected amount of activity, an effect that can be improved more inexpensive comfort.

Furthermore, even when the detection target area is wide, when there is a movement across the detection area of the infrared sensor from the arrangement of at least two mutual infrared sensors and the generation timing of the minimum value of the induced voltage in each area However, the amount of activity can be determined with high accuracy, image processing is not required, and the ventilation rate control can be performed with a simple configuration and high accuracy.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 shows a configuration diagram of a ventilation device according to Embodiment 1 of the present invention.

  As shown in the figure, the ventilator inputs an infrared sensor 1 that detects infrared rays emitted from a person and an induced voltage of the infrared sensor 1 and determines an activity amount from a time variation of the inputted induced voltage. A volume determination means 2 and a ventilation volume control means 3 for calculating the amount of addition from the determined activity volume to the reference ventilation volume and controlling the ventilation volume are provided.

  Next, a flowchart of activity amount determination in the activity amount determination means 2 is shown in FIG.

As shown in the drawing, the induced voltage obtained by the infrared sensor 1 is input to the activity amount determination means 2. The induced voltage V1 input for the first time is stored as an initial induced voltage. Furthermore, the induced voltage V2 inputted for the second time is compared with the induced voltage V1 inputted for the first time, and if the amount of change is less than ΔV, it is not updated and the initial induced voltage is set to V1. At this time, the fact that the reference time t1 has elapsed is stored. A case where the amount of change between the induced voltage V3 and the initial induced voltage V1 input for the third time exceeds ΔV will be described as an example. The deviation ΔVt between the induced voltage V3 and the initial induced voltage V1 is calculated, and the time deviation Δt and the deviation ΔVt after storing the initial induced voltage at that time are stored in the stored table data shown in FIG. Determine the amount of activity by referring to it. As shown in the table data, the amount of activity is determined in five stages from the time deviation Δt and the deviation, that is, the induced voltage change amount ΔVt.

  Next, the flowchart about the ventilation volume calculation in the ventilation volume control means 3 is shown in FIG.

  As shown in the figure, the ventilation amount control means 3 determines whether or not the activity amount Kt determined by the activity amount determination means 2 exceeds the threshold value Ka to Kd. Based on the determination result, an increase or decrease in ventilation is determined with reference to the table data shown in FIG. For example, Va is increased by 10 m <3> / h, Vb is 15 m <3> / h, Vc is 20 m <3> / h, and Vd is 25 m <3> / h. The optimum ventilation volume is calculated by adding the determined ventilation volume to the reference ventilation volume. The motor speed of the ventilator is controlled from the calculated ventilation volume, and the target air volume is controlled.

  As described above, according to the first embodiment, the amount of activity can be detected from the induced voltage level of the infrared sensor 1 and the amount of change with time, and the amount of ventilation can be controlled according to the detected amount of activity.

(Embodiment 2)
FIG. 6 shows a configuration diagram of a ventilation device according to Embodiment 2 of the present invention.

  The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in the figure, the ventilator receives an infrared sensor 1 for detecting infrared rays emitted from a person, and an induced voltage of the infrared sensor 1, and the period of the maximum value of the input induced voltage and the amount of change in the maximum value. The activity amount determination means 2B for determining the activity amount from the above and the ventilation amount control means 3 for calculating the addition amount from the determined activity amount to the reference ventilation amount and controlling the ventilation amount.

  Next, a flowchart of activity amount determination in the activity amount determination means 2B is shown in FIG.

  As shown in the figure, the induced voltage obtained by the infrared sensor 1 is input to the activity amount determination means 2B. The input induced voltage V1 is stored as an initial induced voltage. Furthermore, the induced voltage V2 inputted for the second time is compared with the induced voltage V1 inputted for the first time, and if the amount of change is less than ΔV, it is not updated and the initial induced voltage is set to V1. At this time, the fact that the reference time t1 has elapsed is stored. A case where the amount of change between the induced voltage V3 and the initial induced voltage V1 input for the third time exceeds ΔV will be described as an example. When the amount of change exceeds ΔV, it is determined as a maximum value candidate, and after the maximum value candidate is stored, the process is terminated. Furthermore, when the induced voltage V4 input for the fourth time is an induced voltage smaller than the maximum value candidate, the induced voltage V3 is set to the maximum value Vp1. When this determination is repeated and the maximum values Vp1 and Vp2 are detected, the time interval Δt at which the maximum value Vp1 and the maximum value Vp2 appear and the change ΔVp in the maximum value are stored as shown in FIG. The amount of activity is determined with reference to the table data.

  As described above, according to the second embodiment, the amount of activity can be detected from the maximum value level of the induced voltage of the infrared sensor 1 and the amount of change with time, and the ventilation amount can be controlled according to the detected amount of activity. It becomes.

(Embodiment 3)
FIG. 9 shows a configuration diagram of a ventilation device according to Embodiment 3 of the present invention.
In addition, the same code | symbol is attached to the same thing as Embodiment 1 or 2, and detailed description is abbreviate | omitted.

  As shown in the figure, the ventilator inputs an infrared sensor 1 that detects infrared rays emitted from a person, and an induced voltage of the infrared sensor 1, and a minimum value period and a minimum value change amount of the input induced voltage. The activity amount determination means 2C for determining the activity amount from the above, and the ventilation amount control means 3 for calculating the addition amount from the determined activity amount to the reference ventilation amount and controlling the ventilation amount.

  Next, FIG. 10 shows a flowchart of activity amount determination in the activity amount determination means 2C.

  As shown in the figure, the induced voltage obtained by the infrared sensor 1 is input to the activity amount determination means 2C. The input induced voltage V1 is stored as an initial induced voltage. Furthermore, the induced voltage V2 inputted for the second time is compared with the induced voltage V1 inputted for the first time, and if the amount of change exceeds ΔV, it is not updated and the initial induced voltage is set to V1. At this time, the fact that the reference time t1 has elapsed is stored. A case where the amount of change between the induced voltage V3 and the initial induced voltage V1 input for the third time is less than ΔV will be described as an example. When the amount of change is less than ΔV, it is determined as a minimum value candidate, and after the minimum value candidate is stored, the process ends. Further, when the induced voltage V4 input for the fourth time is an induced voltage larger than the minimum value candidate, the induced voltage V3 is set to the minimum value Vm1. When this determination is repeated and the minimum values Vm1 and Vm2 are detected, the time interval Δt at which the minimum value Vm1 and the minimum value Vm2 appear and the change ΔVm of the minimum value are stored as shown in FIG. The amount of activity is determined with reference to the table data.

  As described above, according to the third embodiment, the amount of activity can be detected from the minimum value level of the induced voltage of the infrared sensor 1 and the amount of change with time, and the ventilation amount can be controlled according to the detected amount of activity. It becomes.

(Embodiment 4)
FIG. 12 shows a configuration diagram of a ventilation device according to Embodiment 4 of the present invention.

  In addition, the same part as Embodiment 1 thru | or 3 attaches | subjects the same code | symbol, and abbreviate | omits detailed description.

  As shown in the figure, the ventilator inputs two infrared sensors 1a and 1b that detect infrared rays emitted from a person, and the induced voltages of these infrared sensors 1a and 1b. Second activity amount determination means 4 for determining the activity amount and ventilation amount control means 3 for controlling the ventilation amount so as to add the determined activity amount to the reference ventilation amount are provided.

  Next, a flowchart of activity amount determination in the second activity amount determination means 4 is shown in FIG.

As shown in the drawing, the induced voltages Va1 and Vb1 obtained by the infrared sensors 1a and 1b are input to the second activity amount determination means 4. The input induced voltages Va1 and Vb1 are stored as initial induced voltages. Further, the induced voltages Va2 and Vb2 inputted for the second time are compared with the induced voltages Va1 and Vb1 inputted for the first time. . At this time, the fact that the reference time t1 has elapsed is stored. The case where the amount of change between the induced voltages Va3 and Vb3 and the initial induced voltages Va1 and Vb1 input for the third time exceeds each ΔV will be described as an example. When the respective variations ΔVa and ΔVb exceed ΔV, the time deviations Δta and Δtb and the induced voltage variations ΔVa and ΔVb after storing the initial induced voltage are shown in FIG. The amount of activity is determined with reference to the table data stored in the table.
At this time, when the induced voltage change amount ΔVa is negative, the induced voltage change amount ΔVb is positive, and the time deviation Δta is substantially equal to Δtb, the detection region of the infrared sensor 1a is changed to the detection region of the infrared sensor 1b. The movement amount is determined, and the activity amount is determined by referring to the table data similarly shown in FIG. 14 from the detection areas of the mutual infrared sensors 1a and 1b stored in advance.

  As described above, according to the fourth embodiment, the activity amount is detected from the amount of change in the induced voltage of the infrared sensors 1a and 1b, and the ventilation amount is added to the reference ventilation amount according to the detected activity amount. Will be able to.

(Embodiment 5)
FIG. 15: shows the block diagram of the ventilation apparatus in Embodiment 5 of this invention.

  The same components as those in the first to fourth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in the figure, the ventilator inputs two infrared sensors 1a and 1b that detect infrared rays emitted from a person and the induced voltages of these infrared sensors 1a and 1b, and the maximum value of the inputted induced voltages. A third activity amount determination unit 5 that determines an activity amount from the occurrence timing and a ventilation amount control unit 3 that controls the ventilation amount so as to add the determined activity amount to the reference ventilation amount are provided.

  Next, FIG. 16 shows a flowchart of activity amount determination in the third activity amount determination means 5.

  As shown in the figure, the induced voltages Va1 and Vb1 obtained by the infrared sensors 1a and 1b are input to the third activity amount determination means 5. The input induced voltages Va1 and Vb1 are stored as initial induced voltages. Furthermore, the induced voltages Va2 and Vb2 inputted for the second time are compared with the induced voltages Va1 and Vb1 inputted for the first time, and if the change amount exceeds ΔV, they are stored as maximum value candidates Vpa1 and Vpb1, and are lower. For example, the maximum value candidates are not updated and are set to the initial induced voltages Va1 and Vb1. Furthermore, when the induced voltages Va3 and Vb3 input for the third time are smaller than the maximum value candidates, the induced voltages Vpa1 and Vpb1 are determined as the maximum values. This determination is repeated, and the time intervals Δtpa and Δtpb at which the maximum values Vpa1, Vpa2, Vpb1 and Vpb2 appear and the changes ΔVpa and ΔVpb of the maximum values are stored as shown in FIG. Determine the amount of activity by referring to the data.

  As described above, according to the fifth embodiment, the amount of activity is detected from the maximum values of the induced voltages of the infrared sensors 1a and 1b and the generation timing, and the amount of ventilation is set to the reference amount of ventilation according to the detected amount of activity. It is possible to perform addition control.

(Embodiment 6)
FIG. 18 shows a configuration diagram of a ventilation device according to Embodiment 6 of the present invention.

  The same components as those in the first to fifth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in the figure, the ventilator inputs two infrared sensors 1a and 1b that detect infrared rays emitted from a person and the induced voltages of these infrared sensors 1a and 1b, and the maximum value of the inputted induced voltages. A fourth activity amount determining means 6 for determining an activity amount from the occurrence timing and a ventilation amount control means 3 for controlling to add the determined activity amount to the reference ventilation amount are provided.

  Next, a flowchart of activity amount determination in the fourth activity amount determination means 6 is shown in FIG.

As shown in the figure, the induced voltages Va1 and Vb1 obtained by the infrared sensors 1a and 1b are input to the fourth activity amount determination means 6. The input induced voltages Va1 and Vb1 are stored as initial induced voltages. Further, the induced voltages Va2 and Vb2 inputted for the second time are compared with the induced voltages Va1 and Vb1 inputted for the first time. For example, the minimum value candidates are not updated and are set to the initial induced voltages Va1 and Vb1. Further, when the induced voltages Va3 and Vb3 input for the third time are larger than the minimum value candidates, the induced voltages Vma1 and Vmb1 are determined as the minimum values. This determination is repeated, and the time intervals Δtma, Δtmb where the minimum values Vma1, Vma2, Vmb1, Vmb2 appear and the changes ΔVma, ΔVmb of the minimum values are stored as shown in FIG. Determine the amount of activity by referring to the data.

  As described above, according to the fifth embodiment, the amount of activity is detected from each minimum value of the induced voltage of the infrared sensors 1a and 1b and the generation timing, and the ventilation amount is set to the reference ventilation amount according to the detected amount of activity. It is possible to perform addition control.

(Embodiment 7)
FIG. 21 shows a configuration diagram of a ventilation device according to Embodiment 7 of the present invention.

  The same components as those in Embodiments 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in the figure, the ventilator inputs an infrared sensor 1 that detects infrared rays emitted from a person and an induced voltage of the infrared sensor 1 and determines an activity amount from a time variation of the inputted induced voltage. Fresnel as an infrared condensing means for selectively transmitting and condensing infrared light from a person and a volume determining means 2, a ventilation control means 3 for controlling the determined activity to be added to the reference ventilation A lens 7 is provided.

  Next, the visual field of the Fresnel lens 7 will be described with reference to FIG.

  As shown in (a) in the figure, the Fresnel lens 7 selectively transmits a wavelength region of about 10 microns emitted from a person in infrared light, and obtains a wide-angle field of 120 degrees. Therefore, it has a multifaceted structure. The number of divisions of the Fresnel lens 7 is 8, and the viewing angle per one position is 7 degrees. On the other hand, if the floor height is 250 cm, the visual field per unit is as shown in (b) in the figure, and responds to the movement of a minute person.

  As described above, according to the seventh embodiment, by providing the Fresnel lens 7 as the infrared condensing means, the viewing angle can be widened, the number of divisions is nine, By setting the viewing angle to 7 degrees, it is possible to detect a minute human motion.

  The present invention relates to automatic control of various air-conditioning equipment by human detection and activity detection using a human sensor, and can be applied to automatic start / stop of an air conditioner, temperature, wind direction, or air volume control.

DESCRIPTION OF SYMBOLS 1 Infrared sensor 1a Infrared sensor 1b Infrared sensor 2 Activity amount determination means 2B Activity amount determination means 2C Activity amount determination means 3 Ventilation amount control means 4 Second activity amount determination means 5 Third activity amount determination means 6 Fourth activity amount determination means 7 Fresnel lens

Claims (1)

Activity amount detection means for detecting a person's activity amount, and a ventilation amount control means for controlling to add to a reference ventilation amount corresponding to a room volume stored in advance according to the activity amount of the person detected by the activity amount detection means The activity amount detecting means determines an activity amount from an infrared sensor having at least two or more different detection regions and a change amount in each region of the induced voltage of the infrared sensor. with an activity amount determining means, an activity amount of the person is ventilator and judging from the generation timing of the pole minimum value in each region of the induced voltage of the infrared sensor.

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