JP6939422B2 - Air conditioning control system - Google Patents

Description

The disclosure herein relates to an air conditioning control system that controls a vehicle air conditioner.

Patent Document 1 discloses a technique relating to air conditioning in a vehicle interior, so-called pre-air conditioning, which is performed before an occupant gets on board. In this technology, the transmitter carried by the occupant transmits both the pre-air conditioning request signal for instructing the start of pre-air conditioning and the position information of the occupant to the vehicle. The ECU of the vehicle that has received the pre-air conditioning request signal estimates the distance from the occupant to the vehicle based on the position information of the occupant and the position information of the vehicle, and estimates the time until the occupant gets into the vehicle. Then, the remaining amount of the battery is detected, the pre-air-conditioning possible time is calculated, and the pre-air-conditioning start timing is determined based on the pre-air-conditioning possible time and the time until the occupant gets into the vehicle.

Japanese Patent No. 4265566

The technique of Patent Document 1 does not disclose that it corresponds to a change in the moving state of an occupant after the start of pre-air conditioning. In the technique of Patent Document 1, even if the occupant takes actions such as the occupant staying in the place or the occupant's movement speed slows down and the approach to the vehicle is stagnant, the timing of arrival at the vehicle is delayed. When pre-air conditioning is started, it is considered that pre-air conditioning will be continued until the occupants arrive. In this case, the power consumption due to pre-air conditioning increases.

An object to be disclosed is to provide an air conditioning control system capable of suppressing power consumption by pre-air conditioning.

The plurality of aspects disclosed herein employ different technical means to achieve their respective objectives. Further, the scope of claims and the reference numerals in parentheses described in this section are examples showing the correspondence with the specific means described in the embodiment described later as one embodiment, and limit the technical scope. is not it.

An air conditioning control unit (14) capable of causing the vehicle air conditioner (15) mounted on the vehicle (10) to perform pre-air conditioning for air-conditioning the interior of the vehicle before the occupant gets on the vehicle, and the occupant on the vehicle. On the other hand, the approach determination unit (33c) that determines whether or not the vehicle is approaching within the distance threshold, the threshold setting unit (33d) that sets the distance threshold, and the determination unit that determines whether or not the occupant's approach to the vehicle is stagnant. A stagnation determination unit (33e) is provided, and the occupant's approach to the vehicle is stagnant in the stagnation determination unit in a state where the approach determination unit determines that the occupant is approaching the vehicle within the distance threshold. If it is determined that the vehicle is not, the air conditioning control unit executes pre-air conditioning, and if the stagnation determination unit determines that the occupant's approach to the vehicle is stagnant, the threshold setting unit lowers the distance threshold. ..

According to this disclosure, the air conditioning control system performs pre-air conditioning when the occupant is approaching the vehicle within the distance threshold and the occupant's approach to the vehicle is not stagnant, and the occupant's vehicle. If the approach to is stagnant, the distance threshold can be lowered. Therefore, even if the occupant takes actions such as the occupant staying in place or the occupant's movement speed slows down and the approach to the vehicle is stagnant, and the timing of arrival at the vehicle is delayed, the distance threshold is lowered. , The timing to start pre-air conditioning can be delayed. As described above, it is possible to provide an air conditioning control system capable of suppressing power consumption due to pre-air conditioning.

It is a schematic diagram which shows the air-conditioning control system which concerns on 1st Embodiment. It is a block diagram which shows the air-conditioning control system which concerns on 1st Embodiment. It is a flowchart which shows the process which the air-conditioning control system of 1st Embodiment executes. It is a figure which shows an example of the state of the change of the distance between a occupant and a vehicle, and the change of the operating condition of a compressor. It is a block diagram which shows the air-conditioning control system which concerns on 2nd Embodiment. It is a flowchart which executes the air-conditioning control system of 2nd Embodiment. It is a flowchart which executes the air-conditioning control system of 3rd Embodiment.

(First Embodiment)
The air conditioning control system 1 of the first embodiment will be described with reference to FIGS. 1 to 6. The air conditioning control system 1 includes, for example, a vehicle 10, a mobile terminal 20, and a server device 30. The air conditioning control system 1 can control the operation of the vehicle air conditioner 15 that air-conditions the interior of the vehicle 10. In particular, the air conditioning control system 1 controls the execution of pre-air conditioning that air-conditions the interior of the vehicle before the occupant gets on the vehicle 10.

The vehicle 10 is equipped with a positioning unit 22, a wireless communication unit 21, a DCU 13, an air conditioner ECU 14, and a vehicle air conditioner 15. The vehicle 10 is equipped with a motor as a traveling drive source and a battery for supplying electric power to the motor. The vehicle 10 is, for example, an electric vehicle using only a motor as a traveling drive source, a hybrid vehicle using both a motor and an internal combustion engine as a traveling drive source, a plug-in hybrid vehicle, and the like. The vehicle air conditioner 15 includes, for example, a heat pump cycle. The vehicle air conditioner 15 is composed of various air conditioning functional parts for realizing air conditioning in the vehicle interior. For example, the vehicle air conditioner 15 includes an inside / outside air switching door for switching inside / outside air, a blower for blowing air, a heat pump cycle unit for cooling and heating air composed of an electric compressor, an evaporator, a condenser, and the like. Will be done. The vehicle air conditioner 15 is driven by using the electric power from the above-mentioned battery.

The positioning unit 12 includes a GNSS (Global Navigation Satellite System) receiver and an inertial sensor. The GNSS receiver is a receiver that receives a positioning signal transmitted by a positioning satellite that constitutes GNSS. The GNSS receiver can receive a positioning signal from each positioning satellite of at least one satellite positioning system among satellite positioning systems such as GPS, GLONASS, Galileo, IRNSS, QZSS, and Beidou. The inertial sensor is a gyro sensor that measures the angular velocity of the vehicle 10 or an acceleration sensor that measures the acceleration of the vehicle 10. The positioning unit 12 sequentially determines the position of the vehicle 10 by combining the positioning signal from the GNSS receiver and the measurement result from the inertial sensor. That is, the positioning unit 12 has a function of specifying the position of the vehicle 10. The positioning unit 12 can transmit the obtained vehicle position information from the wireless communication unit 21 to the server device 30.

The wireless communication unit 11 wirelessly communicates with the server device 30 and the mobile terminal 20 via the public line network such as the Internet and the mobile phone network and the base station. The wireless communication unit 11 can communicate with the server device 30 and the mobile terminal 20. Alternatively, it may be configured so as not to directly communicate with the mobile terminal 20.

The DCU 13 and the air conditioning ECU 14 include a microcomputer having a storage medium that can be read by a computer as a main hardware element. The storage medium is a non-transitional substantive storage medium that non-temporarily stores a predetermined program that can be read by a computer. The storage medium may be provided by a semiconductor memory, a magnetic disk, or the like. The DCU 13 and the air conditioning ECU 14 have a function of executing various control processes by executing various programs stored in the storage medium by a processor such as a CPU. The DCU 13 and the air conditioning ECU 14 are one of a plurality of ECUs (Electronic Control Units) mounted on the vehicle 10, respectively.

The DCU13 (Domain Control Unit) is a control device that controls the control of in-vehicle equipment belonging to the corresponding domain. Generally, a plurality of DCU 13s are mounted on the vehicle 10. The DCU 13 shown in FIG. 2 is a DCU that controls the control of in-vehicle equipment, particularly in the domain to which the vehicle air conditioner 15 belongs. The DCU 13 is communicably connected to the air conditioning ECU 14 and is configured to be able to transmit a predetermined instruction signal to the air conditioning ECU 14. It can also be said that the DCU 13 is an ECU higher than the air conditioning ECU 14. The DCU 13 transmits a pre-air conditioning start instruction or a release instruction transmitted from the server device 30 to the air conditioning ECU 14.

The air-conditioning ECU 14 is a control device that controls the vehicle air-conditioning device 15. The air conditioner ECU 14 controls a blower, a compressor, an air mix door, an inside / outside air switching door, an air outlet switching door, and the like in the vehicle air conditioner 15. The air-conditioning ECU 14 can control the vehicle air-conditioning device 15 to perform air-conditioning even when the ignition switch is OFF before the occupant gets on the vehicle 10. The air-conditioning ECU 14 executes the execution of the pre-air conditioning or the release of the pre-air conditioning during the execution in response to an instruction from the DCU 13. The air conditioning ECU 14 corresponds to the “air conditioning control unit”.

Next, the mobile terminal 20 will be described. The mobile terminal 20 includes a wireless communication unit 21, a control unit 23, and an acceleration sensor 24. The mobile terminal 20 is a communication device that can be carried by an occupant. The mobile terminal 20 can be provided by a communication device owned by an occupant who uses the vehicle 10, such as a smartphone, a wearable device, or a tablet terminal. The mobile terminal 20 may be provided by a communication terminal having a function of permitting locking / unlocking of a vehicle 10 door such as an electronic key or a smart key. The wireless communication unit 21 wirelessly communicates with the server device 30 via the public line network and the base station in the same manner as the wireless communication unit 11 of the vehicle 10. The positioning unit 22 includes a GNSS (Global Navigation Satellite System) receiver. The positioning unit 22 determines the position of the mobile terminal 20 based on the positioning signal from the GNSS receiver. That is, the positioning unit 22 has a function of specifying the position of the mobile terminal 20. The positioning unit 22 can transmit the obtained terminal position information from the wireless communication unit 21 to the server device 30. Since the mobile terminal 20 is carried by the occupant, the terminal position information can be regarded as the occupant's position information.

The acceleration sensor 24 is a sensor built in the mobile terminal 20 and detects the acceleration applied to the mobile terminal 20. The acceleration sensor 24 is, for example, a three-axis acceleration sensor that detects acceleration in each of three axial directions orthogonal to each other. By detecting the acceleration, the acceleration sensor 24 can detect the state amount of vibration applied to the mobile terminal 20 by the movement of the occupant holding the mobile terminal 20. That is, the acceleration sensor 24 is a vibration detection unit that detects the vibration of the mobile terminal 20 possessed by the occupant. The acceleration sensor 24 detects the state amount of vibration applied to the mobile terminal 20 as acceleration.

The control unit 23 includes a microcomputer having a storage medium that can be read by a computer as a main hardware element. The storage medium is a non-transitional substantive storage medium that non-temporarily stores a predetermined program that can be read by a computer. The storage medium may be provided by a semiconductor memory, a magnetic disk, or the like. The control unit 23 has a function of executing various control processes by executing various programs stored in the storage medium by a processor such as a CPU. The control unit 23 has a function of transmitting the position information acquired by the positioning unit 22 from the wireless communication unit 21 to the server device 30. The control unit 23 has a function of transmitting the time change of the vibration state amount detected by the acceleration sensor 24, that is, the time change data of the acceleration from the wireless communication unit 21 to the server device 30.

Next, the server device 30 will be described. The server device 30 includes a wireless communication unit 31, a control unit 33, and a data storage unit 32. The server device 30 is provided by, for example, a host computer installed in a management center. The server device 30 is composed of one computer or a plurality of computers. The wireless communication unit 31 wirelessly communicates with the vehicle 10 and the mobile terminal 20 via the Internet, a public line network such as a mobile phone network, and a base station. The wireless communication unit 31 can communicate with the vehicle 10 and the mobile terminal 20.

The data storage unit 32 is a storage device that stores and stores the data received by the wireless communication unit 31, the calculation processing result by the control unit 33, and the like. The data storage unit 32 stores, for example, the position information of the occupant's place of stay. Here, the occupant's place of stay is a place of stay set in advance by the occupant. As the place of stay, for example, a facility such as the occupant's home or workplace that is used and stayed by the occupant on a daily basis is set.

The control unit 33 includes a microcomputer having a storage medium that can be read by a computer as a main hardware element. The storage medium is a non-transitional substantive storage medium that non-temporarily stores a predetermined program that can be read by a computer. The storage medium may be provided by a semiconductor memory, a magnetic disk, or the like. The control unit 33 has a function of executing various control processes by executing various programs stored in the storage medium by a processor such as a CPU. In particular, the control unit 33 has functions as a current location determination unit 33a, a distance calculation unit 33b, an approach determination unit 33c, a threshold value setting unit 33d, a stagnation determination unit 33e, a pre-air conditioning start instruction unit 33j, and a pre-air conditioning stop instruction unit 33k.

The current location determination unit 33a determines whether or not the current location of the occupant is a preset staying location. The current location determination unit 33a uses the position information of the mobile terminal 20 acquired by the positioning unit 22 of the mobile terminal 20 as the location information of the occupants. The current location determination unit 33a determines that the location of the occupant is a preset accommodation location, for example, when the difference between the distance between the location information of the mobile terminal 20 and the location information of the accommodation location is equal to or less than a predetermined distance.

The distance calculation unit 33b calculates the current distance Lnow between the mobile terminal 20 and the vehicle 10. The distance calculation unit 33b calculates the linear distance between the mobile terminal 20 and the vehicle 10 from the terminal position information transmitted from the mobile terminal 20 and the vehicle position information transmitted from the vehicle 10.

The approach determination unit 33c determines whether or not the occupant is approaching the vehicle 10 depending on whether or not the distance Lnow calculated by the distance calculation unit 33b is below the threshold value Ls. In other words, it is determined whether or not the distance Lnow is within the threshold value Ls. The threshold value Ls is, for example, a linear distance between the occupant and the vehicle 10 preset in the control unit 33. The threshold Ls is obtained, for example, based on the time required for pre-air conditioning. Here, the time required for pre-air conditioning is the time required for pre-air conditioning to reach a temperature at which the occupants can avoid feeling uncomfortable when boarding the vehicle interior. In the first embodiment, the threshold value Ls corresponds to the distance threshold value. Further, the approach determination unit 33c determines whether or not the distance Lnow exceeds the threshold value Ls, and determines whether or not the occupant is separated from the vehicle 10.

The threshold value setting unit 33d sets the threshold value Ls. The threshold value setting unit 33d can change the threshold value Ls once set and set another value again. The threshold value setting unit 33d selects, for example, a value to be appropriately set as the threshold value Ls from the values of a plurality of distances stored in the storage medium of the control unit 33 in advance. For the values of the plurality of distances, distances at equal intervals are stored from the largest distance set as the initial threshold value Ls to the smallest distance. The threshold value setting unit 33d can gradually lower the threshold value Ls by gradually changing the setting of the threshold value Ls from a large value to a small value.

As the initial threshold value Ls, for example, a distance between the occupant and the vehicle 10 determined based on the target air conditioning time Tp is set. Here, the target air conditioning time Tp is, for example, the time required for pre-air conditioning. Here, the time required for pre-air conditioning is the time required for pre-air conditioning to reach a temperature at which the occupants can avoid feeling uncomfortable when boarding the vehicle interior.

An example of how to determine the target air conditioning time Tp will be described. For example, considering the case where pre-air conditioning is carried out in the summer, the temperature inside the vehicle (hereinafter referred to as the inside temperature) is the outside temperature in order to prevent the occupants from feeling uncomfortable due to the heat when boarding the vehicle. It is desirable that it is equal to or less than. Therefore, the time required for the occupant to reach the temperature equivalent to the outside air temperature by pre-air conditioning before boarding can be determined as the above-mentioned necessary time. As a more specific example, when the vehicle 10 is parked in an environment where the outside air temperature is 35 ° C. and the sunlight reaches, the inside air temperature rises to 50 ° C. in about 20 to 30 minutes. In this state, pre-air conditioning is started, and it takes about 3 minutes for the inside air temperature to be equal to the outside air temperature, that is, to drop to 35 ° C. From the above, 3 minutes can be set as the time Tp required for pre-air conditioning in summer.

That is, the threshold value Ls can be calculated using the time required for pre-air conditioning defined as described above and the walking speed of the occupant. The walking speed of the occupant can be the average walking speed of the person. Alternatively, the average walking speed of the occupant may be calculated from the walking data of the occupant collected by the mobile terminal 20 or the like. For example, assuming that the time required for pre-air conditioning is 3 minutes and the walking speed of the occupant is 4 km / h, the initial threshold value Ls can be set to 200 m.

The stagnation determination unit 33e determines whether or not the occupant's approach to the vehicle 10 is stagnant. The stagnation determination unit 33e has a vibration determination unit 33e1 as a finer functional block. The vibration determination unit 33e1 determines whether or not the approach is stagnant based on the detected vibration, which is the vibration applied to the mobile terminal 20 detected by the acceleration sensor 24 of the mobile terminal 20, for example. The vibration determination unit 33e1 has a first threshold time determination unit 33f and a second threshold time determination unit 33g as finer functional blocks.

The first threshold time determination unit 33f counts the time as the integration time T1 while the absolute value of the state quantity A (acceleration A) detected by the acceleration sensor 24 is larger than the threshold Ath. The first threshold time determination unit 33f determines whether or not this count has reached the first threshold time T1th. That is, the time count is accumulated until the first threshold time T1th is reached. Here, the threshold value Ath is, for example, a preset value, and is a value determined by an experiment or the like so that the absolute value of the state quantity A generated by walking of a general person exceeds this threshold value Ath. In other words, the first threshold time determination unit 33f counts the time when the state quantity A is a value larger than a predetermined range, here, the range of Ath to −Ath, as the integrated time T1. The threshold value Ath is an example of the state quantity threshold value.

The second threshold time determination unit 33g counts the time as the integration time T2 while the state quantity A detected by the acceleration sensor 24 is smaller than the threshold Ath. The second threshold time determination unit 33g determines whether or not this count has reached the second threshold time T2th. The second threshold time T2th is set as a time longer than the first threshold time T1th. The time count is accumulated until the second threshold time T2th is reached. In other words, the second threshold time determination unit 33g counts the time when the state quantity A is smaller than a predetermined range, here, the range of Ath to −Ath, as the integrated time T2.

In the vibration determination unit 33e1, the integration time T2 is second in the second threshold time determination unit 33g before the integration time T1 is determined by the first threshold time determination unit 33f to reach the first threshold time T1th. When it is determined that the threshold time T2th has been reached, it is determined that the occupant's approach to the vehicle 10 is stagnant. In other words, when the vibration determination unit 33e1 reaches the second threshold time T2th of the integrated time T2 earlier than the arrival of the first threshold time T1th of the integrated time T1, the occupant's approach to the vehicle 10 is stagnant. Judge that there is.

The pre-air conditioning start instruction unit 33j transmits an instruction to start pre-air conditioning from the wireless communication unit 31 to the vehicle 10. The pre-air conditioning start instruction unit 33j instructs the air-conditioning ECU 14 to start pre-air conditioning via the wireless communication unit 11 and the DCU 13 on the vehicle 10 side. The pre-air conditioning start instruction unit 33j instructs the air conditioning ECU 14 to start pre-air conditioning based on the determination of the stagnation determination unit 33e. More specifically, when the occupant is approaching the vehicle 10 within the threshold value Ls and the stagnation determination unit 33e determines that the occupant's approach to the vehicle 10 is not stagnant, the air conditioning instruction is transmitted.

The pre-air conditioning stop instruction unit 33k transmits an instruction to stop the pre-air conditioning from the wireless communication unit 31 to the vehicle 10. The pre-air conditioning stop instruction unit 33k instructs the air conditioning ECU 14 to stop the pre-air conditioning via the wireless communication unit 11 and the DCU 13 on the vehicle 10 side. The pre-air conditioning stop instruction unit 33k instructs the air conditioning ECU 14 to stop the pre-air conditioning based on the determination of the current location determination unit 33a or the stagnation determination unit 33e. More specifically, when the location of the occupant is set to be a preset place of stay, the pre-air conditioning stop is instructed. Further, when the occupant is approaching the vehicle 10 within the threshold value Ls and the stagnation determination unit 33e determines that the occupant's approach to the vehicle 10 is stagnant, the air conditioning stop is instructed.

Next, an example of the processing executed by the air conditioning control system 1 will be described with reference to the flowchart of FIG. The air conditioning control system 1 executes the processing of the flowchart of FIG. 3 when the power of the mobile terminal 20 is turned on.

First, the air conditioning control system 1 determines in step S10 whether or not the current location of the occupant is a preset staying location. Note that FIG. 3 shows a case where the occupant's home is set as the place of stay. The process of step S10 corresponds to the process executed by the current location determination unit 33a. If it is determined in step S10 that the current location is home, the process proceeds to step S50, and the pre-air conditioning stop instruction unit 33k transmits an instruction to prohibit pre-air conditioning. By the processing of step S10 and step S50, when the occupant is at home, pre-air conditioning is prohibited regardless of the distance between the occupant and the vehicle 10.

On the other hand, if it is determined in step S10 that the current location of the occupant is not his / her home, the process proceeds to step S20. In step S20, the threshold setting unit 33d sets the threshold Ls. At this time, the threshold value setting unit 33d selects the largest value among the values of the plurality of distances selected as the threshold value Ls, for example, 200 m. That is, in step S20, the largest value among the candidates for the threshold value Ls is selected as the initial value. When the threshold value Ls is set in step S20, the process proceeds to step S30.

In step S30, it is determined whether or not the current distance Lnow between the occupant and the vehicle 10 is below the set threshold value Ls. In other words, in step S30, it is determined whether or not the current distance Lnow has reached the threshold value Ls, that is, whether or not the occupant has approached the vehicle 10 within the threshold value Ls. Step S30 is a process executed by the approach determination unit 33c.

If it is determined in step S30 that the threshold value Ls is exceeded, the process proceeds to step S32. In step S32, it is determined whether or not the time when the current distance Lnow exceeds the set threshold value Ls reaches the predetermined time T. The predetermined time T is, for example, a preset time as a time during which it can be considered that the occupant has no intention of approaching the vehicle 10. If it is determined in step S32 that the predetermined time T has not elapsed, the process returns to step S30 again. If it is determined in step S32 that the predetermined time T has elapsed, the process proceeds to step S34, and pre-air conditioning is prohibited. That is, if the pre-air conditioning is not executed, the state is continued, and if the pre-air conditioning has already started, the pre-air conditioning is stopped. When the process of step S34 is completed, the process returns to step S30 again.

On the other hand, if it is determined in step S30 that the current distance Lnow is below the threshold value Ls, the occupant is approaching the vehicle 10 to a distance at which pre-air conditioning can be started, so the process proceeds to step S40. In step S40, it is determined whether or not the absolute value of the state quantity A detected by the mobile terminal 20 exceeds the threshold value Ath. If it is determined in step S40 that the absolute value of the state quantity A does not exceed the threshold value Ath, that is, it is determined to be below the threshold value Ath, the process proceeds to step S41, and only while the absolute value of the state quantity A is below the threshold value Ath. The counting of the accumulated time T2 is advanced. After step S41, the process proceeds to step S42, and it is determined whether or not the integration time T2 has reached the second threshold time T2th. If it is determined in step S42 that the integration time T2 has not reached the second threshold time T2th, the process returns to step S40. At this time, if the absolute value of the state quantity A is below the threshold value Ath, the counting of the integration time T2 is continued in step S41, but if the absolute value of the state quantity A is above the threshold value Ath, the step Since the process proceeds to S43, the counting of the integrated time T2 is temporarily stopped. The process of step S42 is a process executed by the second threshold time determination unit 33g.

If it is determined in step S40 that the threshold value Ath is exceeded, the process proceeds to step S43, and the counting of the integration time T1 is advanced only while the absolute value of the state quantity A exceeds the threshold value Ath. After step S43, the process proceeds to step S44, and it is determined whether or not the integration time T1 has reached the first threshold time T1th. If it is determined in step S44 that the integration time T1 has not reached the first threshold time T1th, the process returns to step S40. At this time, if the absolute value of the state quantity A exceeds the threshold value Ath, the counting of the integration time T1 is continued in step S43, but if the absolute value of the state quantity A exceeds the threshold value Ath, the step Since the process proceeds to S41, the counting of the integrated time T1 is temporarily stopped. The process of step S44 is a process executed by the first threshold time determination unit 33f. Further, the processes of steps S40 to S44 are processes executed by the vibration determination unit 33e1 and eventually the stagnation determination unit 33e.

The control unit 33 repeats the processes from step S40 to step S44 until the integration time T1 reaches the first threshold time T1th or the integration time T2 reaches T2th. If it is determined in step S42 that the integrated time T2 has reached T2th before it is determined in step S44 that the integrated time T1 has reached T1th, the process proceeds to step S50.

In step S50, an instruction for prohibiting pre-air conditioning is transmitted. That is, when the pre-air conditioning is not executed, the state is continued. If pre-air conditioning has already started, stop pre-air conditioning. The process of step S50 is a process executed by the pre-air conditioning stop instruction unit 33k. When the pre-air conditioning is prohibited in step S50, the process proceeds to step S60.

In step S60, a process of lowering the value of the threshold value Ls is executed. The process of step S60 is executed by the threshold value setting unit 33d. The threshold value setting unit 33d newly sets a value one step smaller than the set value of the threshold value Ls as the threshold value Ls. For example, when 200 m is selected and set as the value of the threshold value Ls from 200 m, 150 m, and 100 m, the threshold value setting unit 33d resets 150 m, which is one step smaller, as a new threshold value Ls. When a new threshold value is set in step S60, the process returns to step S30. Here, when 100 m has already been set as the threshold value Ls, since 100 m is the lower limit value of the threshold value Ls, the integration times T1 and T2 are reset in step S80 without changing the threshold value Ls, and step S30. Return to.

On the other hand, if it is determined in step S44 that the integrated time T1 has reached T1th before it is determined in step S42 that the integrated time T2 has reached T2th, the process proceeds to step S70. In step S70, execution of pre-air conditioning is started. That is, if the pre-air conditioning has already been started, the pre-air conditioning is continued, and if the pre-air conditioning is prohibited, the prohibition of the pre-air conditioning is released and the pre-air conditioning is started. The process of step S70 is a process executed by the pre-air conditioning start instruction unit 33j. When the execution of the pre-air conditioning is started in step S70, the integrated times T1 and T2 are reset in step S80, and the process returns to step S30.

Next, the operation of the air conditioning control system 1 in an example of a specific situation will be described with reference to the graph of FIG. The upper graph of FIG. 4 shows an example of the time change of the distance Lnow until the occupant approaches the vehicle 10 and gets on the vehicle 10. In the example shown in this graph, the occupant starts walking and approaching the vehicle 10 at time t0, stays in place at time t2, approaches the vehicle 10 again at time t3, and approaches the vehicle 10 again at time t6. Arrive at and board. The situation where the occupant stays on the spot is, for example, the occupant talking while staying at home, at work, or at a facility such as a restaurant. The graph in the middle of FIG. 4 is an example of a time change of the state quantity A detected by the acceleration sensor 24 of the mobile terminal 20 possessed by the occupant. During the period from time t2 to time t3 when the occupant is stagnant on the spot, the detected state quantity A becomes relatively small. The lower graph of FIG. 4 shows the change in the operating state of the compressor of the vehicle air conditioner 15 with the passage of time. Although the graph of FIG. 4 shows only the operating status of the compressor, other air-conditioning functional parts that operate when air-conditioning such as a blower is also operated and stopped in the same manner as the compressor.

First, between the time t0 and the time t1, since the current distance Lnow exceeds the initial threshold value Ls1 set in step S20, the steps of step S30 and step S32 are repeated. Since the current distance Lnow reaches the threshold value Ls1 at time t1, the process proceeds from step S30 to step S40. From time t1 to time t2, the integration time T1 and the integration time T2 are integrated by repeating the series of processes from step S40 to step S44. In the example of FIG. 4, it is assumed that the integrated time T1 has not reached the first threshold time T1th by the time t2. If the integrated time T1 reaches the first threshold time T1th by the time t2, the pre-air conditioning is started between the time t1 and the time t2 in order to proceed to the step S70 in the step S44.

When the occupant stays in place at time t2, the state quantity A becomes smaller. As a result, the integrated time T2 is more likely to be counted than the integrated time T1. When the integrated time T2 reaches the second threshold time T2th before reaching the first threshold time T1th of the integrated time T1 at the time t2s, the process proceeds from step S42 to step S50 and step S60. Therefore, the threshold value Ls is reset to the threshold value Ls2, which is a value one step lower than the initial threshold value Ls1. At this time, assuming that the threshold value Ls2 is smaller than the current distance Lnow at the time t2s, the processes of steps S30 and S32 are repeated until the time t4 even if the occupant starts approaching the vehicle 10 again from the time t3. It becomes.

When the current distance Lnow reaches the threshold value Ls2 at time t4, the process proceeds from step S30 to step S40 again. Since the occupant continues to approach the vehicle 10 without stagnation after the time t4, the integrated time T1 is more likely to be counted than when the occupant is stagnant, and the arrival of the integrated time T1 at the first threshold time T1th is integrated. It becomes earlier than the arrival of the second threshold time T2th of the time T2. When the integrated time T1 reaches the first threshold time T1th at time t5, the process proceeds from step S44 to step S70, and pre-air conditioning is started. After that, pre-air conditioning is continued until the occupants get on board.
As described above, the air conditioning control system 1 lowers the threshold value Ls to delay the start timing of pre-air conditioning in response to the fact that the occupants have stagnated on the spot, that is, the arrival of the occupants to the vehicle 10 has been delayed. Can be done. As a result, when the current distance Lnow reaches the threshold value Ls1, the power used for the pre-air conditioning can be saved as compared with the case where the pre-air conditioning is continuously executed until the occupant gets on board.

Next, the effects brought about by the air conditioning control system 1 of the first embodiment will be described. The air-conditioning control system 1 of the first embodiment includes an air-conditioning ECU 14 capable of causing the vehicle air-conditioning device 15 mounted on the vehicle 10 to perform pre-air conditioning for air-conditioning the interior of the vehicle before the occupant gets on board. The air conditioning control system 1 includes an approach determination unit 33c for determining whether or not the occupant is approaching the vehicle 10 within the threshold value Ls for starting execution of pre-air conditioning, and a threshold value setting unit 33d for setting the threshold value Ls. Be prepared. The air conditioning control system 1 includes a stagnation determination unit 33e that determines whether or not the occupant's approach to the vehicle 10 is stagnation.

According to this, the air conditioning control system 1 executes pre-air conditioning when the occupant is approaching the vehicle 10 within the distance threshold value Ls and the occupant's approach to the vehicle 10 is stagnant. The starting distance threshold Ls can be lowered. Therefore, even if the occupant takes an action such that the approach to the vehicle 10 is stagnant and the timing of arrival at the vehicle 10 is delayed, the timing of starting the pre-air conditioning can be delayed by lowering the distance threshold value Ls. As described above, it is possible to provide the air conditioning control system 1 capable of suppressing the power consumption due to pre-air conditioning.

The air conditioning control system 1 further includes an acceleration sensor 24 that detects vibration applied to the mobile terminal 20 possessed by the occupant. The stagnation determination unit 33e determines whether or not the change in the approach of the occupant to the vehicle 10 is stagnant based on the vibration detected by the acceleration sensor 24. According to this, it is possible to determine whether or not the occupant's approach to the vehicle 10 is stagnant based on the vibration applied to the mobile terminal 20. That is, since the movement of the occupant can be directly detected by the mobile terminal 20, the change in the movement of the occupant can be detected more accurately.

The stagnation determination unit 33e has a first threshold time determination unit 33f and a second threshold time determination unit 33g. The first threshold time determination unit 33f determines whether or not the integrated time T1 of the time when the state quantity A exceeds the threshold th has reached the first threshold time T1th. The second threshold time determination unit 33g determines whether or not the integrated time T2 of the time when the state quantity A is below the threshold value Ath has reached the second threshold time T2th. The stagnation determination unit 33e is determined by the second threshold time determination unit 33g to reach the second threshold time T2th before the first threshold time determination unit 33f determines that the first threshold time T1th has been reached. In this case, it is determined that the occupant's approach to the vehicle 10 is stagnant.

According to this, since the stagnation is determined based on the integrated time T1 in which the detected vibration is below the threshold value and the integrated time T2 in which the vibration exceeds the threshold value, the threshold value Ls is immediately changed when the vibration falls below the threshold value for a short time. It can be avoided.

After the air-conditioning ECU 14 starts executing the pre-air conditioning, if the stagnation determination unit 33e determines that the occupant's approach to the vehicle 10 is stagnant, the air-conditioning ECU 14 stops the pre-air conditioning. According to this, even after the pre-air conditioning is started, if the occupant's approach to the vehicle 10 is stagnant, the power used for the pre-air conditioning can be suppressed by stopping the pre-air conditioning.

The air conditioning control system 1 includes a current location determination unit 33a for determining whether or not the current location of the occupant is a preset occupant's staying location. When the current location determination unit 33a determines that the occupant's current location is the place of stay, the threshold setting unit 33d sets the threshold value without determining whether the occupant's approach to the vehicle 10 is stagnant. Decrease Ls.

According to this, by setting the occupant's place of stay such as home or work in advance, if the occupant's current place is the set place of stay, it is judged that the occupant is stagnant at the place of stay, and the occupant is stagnant. The threshold value Ls can be lowered without determining the stagnation by the determination unit 33e.

(Second Embodiment)
In the second embodiment, a modification of the air conditioning control system 1 in the first embodiment will be described. The components having the same reference numerals as those in the drawings of the first embodiment in FIGS. 5 and 6 are the same components and have the same effects.

In the air conditioning control system 1 of the second embodiment, the stagnation determination unit 33e has a distance fluctuation determination unit 33e2 as a finer functional block. The distance variation determination unit 33e2 determines whether or not the occupant's approach to the vehicle 10 is stagnant based on the variation in the distance between the occupant and the vehicle 10. The distance fluctuation determination unit 33e2 includes, for example, a third threshold time determination unit 33h and a fourth threshold time determination unit 33i as finer functional blocks.

The third threshold time determination unit 33h counts the time as the integrated time T3 while the amount of decrease in the distance between the occupant and the vehicle 10 exceeds the decrease amount threshold. The third threshold time determination unit 33h determines whether or not the count of the integrated time T3 has reached the third threshold time T3th. That is, the time count is accumulated until the third threshold time T3th is reached. Here, the reduction amount threshold value is, for example, a preset value, and is a value determined by an experiment or the like so that the moving distance at regular intervals generated by walking of a general person exceeds this reduction amount threshold value.

The fourth threshold time determination unit 33i counts the integrated time T4 while the amount of decrease in the distance between the occupant and the vehicle 10 is less than the decrease amount threshold. The fourth threshold time determination unit 33i determines whether or not the count of the integrated time T4 has reached the fourth threshold time T4th. The count of the integration time T4 is integrated until the fourth threshold time T4th is reached.

In the distance fluctuation determination unit 33e2, the integration time T4 is first determined by the fourth threshold time determination unit 33i before the integration time T3 is determined by the third threshold time determination unit 33h to reach the third threshold time T3th. When it is determined that the four threshold time T4th has been reached, it is determined that the occupant's approach to the vehicle 10 is stagnant. In other words, when the stagnation determination unit 33e reaches the fourth threshold time T4th of the integrated time T4 earlier than the arrival of the third threshold time T3th of the integrated time T3, the occupant's approach to the vehicle 10 is stagnant. Judge that there is.

Next, an example of the processing executed by the air conditioning control system 1 will be described with reference to the flowchart of FIG. When it is determined in step S44 that the integration time T2 has reached the second threshold time T2th, the air conditioning control system 1 proceeds to step S47 before proceeding to step S70.

In step S47, it is determined whether or not there is a change in the distance between the occupant and the vehicle 10. This process is a process executed by the distance variation determination unit 33e2. In step S47, it is determined which comes first, the integration time T3 reaching the third threshold time T3th or the integration time T4 reaching the fourth threshold time T4th. In step S47, for example, counting of the integrated time T3 and the integrated time T4 is started from the time when the integrated time T2 reaches the second threshold time T2th in step S44.

Alternatively, the counting process of the integrated time T3 and the integrated time T4 may be performed in parallel with the counting processing of the integrated time T1 and the integrated time T2. In this case, if the integration time T3 has reached the third threshold time T3th or the integration time T4 has reached the fourth threshold time T4th at the time of proceeding from step S44 to step S47, the integration time T3 has reached the third threshold time T3th. Based on the result, it is determined whether or not there is a change in the distance between the occupant and the vehicle 10. If neither of the integrated times T3 and T4 has reached the threshold times T3th and T4th at the time of proceeding from step S44 to step S47, either the integrated time T3 reaches the third threshold time T3th or the integrated time T4 is the fourth. The counting may be continued until the threshold time T4th is reached.

In the air conditioning control system 1 of the second embodiment, when the vibration determination unit 33e1 determines that the occupant's approach to the vehicle 10 is not stagnant, and the distance variation determination unit 33e2 determines that the occupant's approach to the vehicle 10 is stagnant. If it is determined to be, the determination result in the distance variation determination unit 33e2 is preferentially selected.

According to this, even in a situation where the vibration determination unit determines that the approach is not stagnant even though the occupant is not approaching the vehicle 10, for example, when the occupant is moving around in a certain area. Priority is given to the determination by the distance variation determination unit 33e2. Thereby, it is possible to more accurately determine whether or not the occupant's approach to the vehicle 10 is stagnant.

(Third Embodiment)
In the third embodiment, a modification of the air conditioning control system 1 in the first embodiment will be described. In FIG. 7, the components having the same reference numerals as those in the drawings of the first embodiment are the same components and have the same effects.

In the third embodiment, the distance variation determination unit 33e2 determines the distance variation when the vibration determination unit determines that the occupant's approach to the vehicle 10 is stagnant. That is, as shown in FIG. 7, as an example of the process, when it is determined in step S43 that the first threshold time T1 has reached the first threshold time T1th, the process proceeds to step S50 to stop the pre-air conditioning. Before that, it is determined in step S48 whether or not there is a change in the distance. The process in step S48 is the same as the process in step S47 of the second embodiment, and the description of step S47 can be incorporated by reference.

If it is determined in step S48 that there is no change in the distance, it is determined that the approach of the occupants is stagnant, and the process proceeds to step S50 to stop the pre-air conditioning. On the other hand, if it is determined in step S48 that the distance fluctuates, even if it is determined in step S42 that the integrated time T2 has reached the second threshold time T2th, the process proceeds to step S70 to start pre-air conditioning. do. In other words, when the vibration determination unit 33e1 determines that the occupant's approach to the vehicle 10 is stagnant, the distance variation determination unit 33e2 determines that the occupant's approach to the vehicle 10 is not stagnant. In this case, priority is given to the determination of the distance variation determination unit 33e2.

That is, in the air conditioning control system 1 of the third embodiment, when the vibration determination unit 33e1 determines that the occupant's approach to the vehicle 10 is stagnant, the distance fluctuation determination unit 33e2 determines the stagnation. When the distance variation determination unit 33e2 determines that the occupant's approach to the vehicle 10 is not stagnant, the distance variation determination unit 33e2 gives priority to the determination and starts pre-air conditioning. Therefore, in the air conditioning control system 1 of the third embodiment, the stagnation of the occupant can be detected more reliably in a situation where the vibration is difficult to be detected even though the occupant is close to the vehicle 10.

(Other embodiments)
The disclosure herein is not limited to the illustrated embodiments. The disclosure includes exemplary embodiments and modifications by those skilled in the art based on them. For example, disclosure is not limited to the parts and / or element combinations shown in the embodiments. Disclosure can be carried out in various combinations. The disclosure can have additional parts that can be added to the embodiment. Disclosures include those in which the parts and / or elements of the embodiment are omitted. Disclosures include the replacement or combination of parts and / or elements between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments. Some technical scopes disclosed are indicated by the description of the claims and should be understood to include all modifications within the meaning and scope equivalent to the description of the claims. ..

In the above-described embodiment, the stagnation determination unit 33e includes a vibration determination unit 33e1. Instead of this, the stagnation determination unit 33e may be configured to include the distance fluctuation determination unit 33e2 without the vibration determination unit 33e1. In other words, the stagnation determination unit 33e reduces the distance between the occupant and the vehicle 10 without determining whether or not the occupant's approach to the vehicle 10 is stagnant from the vibration detected by the mobile terminal 20. It may be determined from the fluctuation of the amount whether or not the occupant's approach to the vehicle 10 is stagnant.

In the above-described embodiment, the approach determination unit 33c, the threshold value setting unit 33d, and the stagnation determination unit 33e are executed by the control unit 33 of the server device 30. Instead of this, an in-vehicle ECU such as a DCU 13 or an air conditioning ECU 14 may have a configuration having these functions. Further, the current location determination unit 33a, the pre-air conditioning start instruction unit 33j, and the pre-air conditioning stop instruction unit 33k may also be configured to be included in the in-vehicle ECU. By having each functional block in the vehicle-mounted ECU, the corresponding function can be executed by communication between the vehicle 10 and the mobile terminal 20 without going through the server device 30. Alternatively, the control unit 23 of the mobile terminal 20 may have these functions. In the above-described embodiment, the current distance Lnow between the occupant and the vehicle 10 is carried based on the positioning signal transmitted by the positioning satellite. It is assumed that the position information of each of the terminal 20 and the vehicle 10 is acquired and calculated from the acquired position information. Instead of this, the linear distance may be calculated by short-range communication carried out between the mobile terminal 20 and the vehicle 10. Short-range communication is communication that conforms to short-range wireless communication standards such as Bluetooth (registered trademark), Wi-Fi (registered trademark), and ZigBee (registered trademark).

In the above-described embodiment, the vibration determination unit 33e1 acquires the acceleration detected by the acceleration sensor 24 as the state amount A of the vibration applied to the mobile terminal 20. Instead of this, as the state amount A of vibration, the speed, displacement, etc. of vibration applied to the mobile terminal 20 may be detected by a sensor built in the mobile terminal 20. The vibration determination unit 33e1 can adopt an arbitrary state amount for the vibration determination as long as it can detect a change in vibration applied to the mobile terminal 20 due to a change in the movement of the occupant.

1 Air conditioning control system, 10 Vehicles, 14 Air conditioning control unit, 15 Vehicle air conditioning device, 20 Mobile terminal, 24 Vibration detection unit, 33a Current location determination unit, 33c Approach determination unit, 33d Threshold setting unit, 33e Stagnation judgment unit, 33e1 Vibration Judgment unit, 33e2 distance fluctuation determination unit, 33f first threshold time determination unit, 33g second threshold time determination unit, 33h third threshold time determination unit, 33i fourth threshold time determination unit.

Claims (8)

An air-conditioning control unit (14) capable of causing the vehicle air-conditioning device (15) mounted on the vehicle (10) to perform pre-air conditioning for air-conditioning the interior of the vehicle before the occupant gets on board.
An approach determination unit (33c) for determining whether or not the occupant is approaching the vehicle within the distance threshold value, and
A threshold setting unit (33d) for setting the distance threshold and
A stagnation determination unit (33e) for determining whether or not the occupant's approach to the vehicle is stagnation, and
With
In a state where the approach determination unit determines that the occupant is approaching the vehicle within the distance threshold value, the stagnation determination unit determines that the occupant's approach to the vehicle is not stagnant. In this case, when the air conditioning control unit executes the pre-air conditioning and the stagnation determination unit determines that the occupant's approach to the vehicle is stagnant, the threshold value setting unit sets the distance threshold value. Air conditioning control system to lower. A vibration detection unit (24) for detecting vibration applied to the mobile terminal (20) possessed by the occupant is further provided.
The stagnation determination unit
The air conditioning control system according to claim 1, further comprising a vibration determination unit (33e1) for determining whether or not the change in the approach of the occupant to the vehicle is stagnant based on the detected vibration detected by the vibration detection unit. The vibration determination unit
A first threshold time determination unit (33f) for determining whether or not the integrated time of the time when the state quantity of the detected vibration exceeds the state quantity threshold has reached the first threshold time.
A second threshold time determination unit (33 g) for determining whether or not the integrated time of the time when the state quantity of the detected vibration is lower than the state quantity threshold reaches the second threshold time.
Have,
When the second threshold time determination unit determines that the second threshold time has been reached before the first threshold time determination unit determines that the first threshold time has been reached, the occupant The air conditioning control system according to claim 2, wherein it is determined that the approach to the vehicle is stagnant. The stagnation determination unit
Any of claims 1 to 3 having a distance variation determination unit (33e2) for determining whether or not the occupant's approach to the vehicle is stagnant based on the variation in the distance between the occupant and the vehicle. The air conditioning control system according to item 1. The distance fluctuation determination unit
A third threshold for determining whether or not the cumulative time of the time for which the amount of decrease in the distance between the occupant and the vehicle at a predetermined time exceeds the magnitude of the decrease amount threshold has reached the third threshold time. Time determination unit (33h) and
A second determination as to whether or not the cumulative time of the time during which the amount of decrease in the distance between the occupant and the vehicle for each predetermined time is less than the magnitude of the decrease amount threshold has reached the fourth threshold time. 4 threshold time determination unit (33i) and
Have,
When the fourth threshold time determination unit determines that the fourth threshold time has been reached before the third threshold time determination unit determines that the third threshold time has been reached, the occupant The air conditioning control system according to claim 4, wherein it is determined that the approach to the vehicle is stagnant. A vibration detection unit (24) for detecting vibration applied to the mobile terminal (20) possessed by the occupant is further provided.
The stagnation determination unit
A vibration determination unit (33e1) that determines whether or not the change in the approach of the occupant to the vehicle is stagnant based on the detected vibration detected by the vibration detection unit.
It has a distance variation determination unit (33e2) for determining whether or not the occupant's approach to the vehicle is stagnant based on the variation in the distance between the occupant and the vehicle.
When the vibration determination unit determines that the occupant's approach to the vehicle is not stagnant, and the distance variation determination unit determines that the occupant's approach to the vehicle is stagnant. The air conditioning control system according to any one of claims 1 to 5, wherein the determination result in the distance fluctuation determination unit is preferentially selected. After the air conditioning control unit starts executing the pre-air conditioning, if the stagnation determination unit determines that the occupant's approach to the vehicle is stagnant, the air conditioning control unit performs the pre-air conditioning. The air conditioning control system according to any one of claims 1 to 6, which is to be stopped. A current location determination unit (33a) for determining whether or not the current location of the occupant is a preset location of the occupant is provided.
When the current location determination unit determines that the occupant's current location is the staying location, the stagnation determination unit sets the threshold value without determining whether or not the occupant's approach to the vehicle is stagnant. The air conditioning control system according to any one of claims 1 to 7, wherein the unit lowers the distance threshold value.

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