JP2017217950A - Control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for suppressing a hindrance to convenience of an occupant existing in a vehicle and reducing power consumption.SOLUTION: A control device acquires device information indicating a correspondence relation between a predetermined plurality of regions in a vehicle and one or a plurality of devices arranged in the plurality of regions for each region in S145. In S150, whether a person exists in any one region of the plurality of regions is determined. In S155, a peripheral device indicating a device corresponding to the region where the person exists is specified on the basis of the device information and a determination result by a region determination section. A supply control section performs control to supply power to the peripheral devices and not to supply power to at least a part of non-peripheral devices indicating devices except the peripheral devices of devices included in the device information.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a technique for controlling electric power supplied to equipment mounted on a vehicle.

Conventionally, various techniques for reducing power consumption in a vehicle have been developed.
In Patent Document 1, when it is detected by a seat sensor provided in the driver's seat that the driver's seat has become empty, it is determined that the driver has left the vehicle, and all the power supply to the vehicle is stopped. It is disclosed.

U.S. Pat. No. 4,381,042

By the way, in a vehicle, for example, a device that can be operated by an occupant of the vehicle, such as setting of a navigation device or setting of a seat position, may be mounted for each seat.
When the technique described in Patent Document 1 is applied to such a vehicle, when the driver leaves the vehicle, the supply of electric power to the vehicle is stopped, so that no passengers remain in the passenger seat or the rear seat. The device inside cannot be operated. That is, the problem that the convenience of the passenger | crew who exists in a vehicle is impaired arises.

However, if power is always supplied to all devices mounted on the vehicle, there is a problem that power consumption increases.
The present invention has been made in view of these problems, and an object of the present invention is to provide a technique for suppressing the loss of convenience for a person existing in a vehicle and reducing power consumption.

  The control device of the present invention is a device that controls the supply of power in a vehicle, and includes a device acquisition unit (S145), a region determination unit (S150), a specifying unit (S155), and a supply control unit (S165). And).

  The device acquisition unit acquires device information representing a correspondence relationship between a plurality of predetermined regions in the vehicle and one or a plurality of devices arranged in the plurality of regions for each region. The area determination unit determines in which area of the plurality of areas a person exists. The specifying unit specifies a peripheral device representing a device corresponding to a region where a person exists based on the device information and the determination result by the region determining unit. The supply control unit performs control such that power is supplied to the peripheral devices and power is not supplied to at least some of the non-peripheral devices representing devices other than the peripheral devices among the devices included in the device information.

  According to such a configuration, since a person existing in the vehicle can use the peripheral device, it is possible to prevent the convenience of the person existing in the vehicle from being damaged. Furthermore, since power is not supplied to at least some of the non-ambient devices, power consumption can be reduced.

  In addition, the code | symbol in the parenthesis described in this column and a claim shows the correspondence with the specific means as described in embodiment mentioned later as one aspect, Comprising: The technical scope of this invention is shown. It is not limited.

The block diagram which shows the structure of an electric power control system. The figure explaining the area | region where an electromagnetic wave is transmitted by LF antenna. The figure explaining supply of the electric power by a battery. The flowchart of an electric power control process. The figure explaining apparatus information. The figure explaining the relationship between reception intensity | strength and distance, and a 1st threshold value and a 2nd threshold value. The flowchart of a communication apparatus process. The figure explaining the example which specifies the seat where a person exists.

Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings.
[1. Constitution]
The power control system 1 shown in FIG. 1 to which the present invention is applied has a function of specifying a region where a person is present in a vehicle and supplying power to a device corresponding to the specified region.

  The power control system 1 includes an in-vehicle device 10 mounted on a vehicle and one or a plurality of communication devices 20 that can be carried by a person mainly in the vehicle. In the following, a person in the vehicle is also called an occupant. The communication device 20 here is a device that can be carried by a person and that can move and receives a radio wave transmitted every time a radio wave is transmitted from the in-vehicle device 10 and transmits intensity information, as will be described later. Represent. The intensity information is information that represents the received intensity of received radio waves in the order received.

  The control device 50 and the communication device 20 included in the in-vehicle device 10 are set to perform communication using radio waves in a high frequency (hereinafter referred to as RF) band and radio waves in a low frequency (hereinafter referred to as LF) band. Here, the RF band refers to a frequency range of about several hundred MHZ. The LF band refers to a frequency range where the frequency is about one hundred to several hundreds kHz.

  In-vehicle device 10 includes RF antenna 31, LF antenna 32, engine start button 33, touch sensor 34, ECU 35, and supply unit 36 in addition to control device 50. The control device 50 and the ECU 35 are communicably connected to each other via the communication bus 11. Note that the communication method for communication via the bus 11 may be any communication method including a communication method such as CAN or LIN.

  CAN is a registered trademark and is an abbreviation for Controller Area Network. LIN is an abbreviation for Local Interconnect Network. ECU is an abbreviation for Electronic Control Unit.

  The control device 50 is configured around a known microcomputer having a CPU 51, a semiconductor memory (hereinafter referred to as a memory 52) such as a RAM, a ROM, and a flash memory, an RF receiver 53, and an LF driver 54.

  Various functions of the control device 50 are realized by the CPU 51 executing a program stored in a non-transitional physical recording medium. For example, the ROM corresponds to a non-transitional tangible recording medium that stores a program. Further, by executing this program, a method corresponding to the program is executed. The number of microcomputers constituting the control device 50 may be one or more.

  The CPU 51 implements various functions such as power control by executing a program such as power control processing described later. The method of realizing the function of the control device 50 is not limited to software, and some or all of the elements may be realized using hardware that combines a logic circuit, an analog circuit, and the like.

  For example, when the engine start button 33 is operated as a process other than the power control process, the CPU 51 performs authentication with the communication device 20 in the vehicle, and if the authentication is successful, the CPU 51 performs an engine Implement a process that permits starting.

  In the memory 52, information for identifying the authentication machine (hereinafter referred to as authentication information) is recorded. The authentication device represents the communication device 20 that functions as a key of a vehicle on which the power control system 1 is mounted. To function as a key means to have a function of locking and unlocking a vehicle or starting an engine, for example.

  Here, when data is received from the communication device 20, an RF band signal is received via the RF antenna 31, the RF band signal is demodulated by the RF receiver 53, and the demodulated signal is input to the CPU 51. Is done. On the other hand, when data is transmitted from the vehicle to the communication device 20, the data generated by the CPU 51 is modulated into an LF band signal by the LF driver 54, and the modulated signal is transmitted from the LF antenna 32.

The RF antenna 31 is installed in the vehicle and receives radio waves in the RF band.
The LF antenna 32 is installed in the vehicle and transmits LF band radio waves. The inside of a vehicle here mainly represents the interior of the vehicle. In the present embodiment, a plurality of LF antennas 32a, 32b, and 32c are arranged in the vehicle.

  In the following description, when individual components are described, a subscript is added after the reference numeral, such as “LF antenna 32a”, and when common contents are described, “LF antenna 32” is used. The abbreviations are abbreviated.

The LF antenna 32 has a predetermined area (hereinafter referred to as a communication area) in which LF band radio waves can be transmitted.
As shown in FIG. 2, in the vehicle 5, a driver seat 71, a passenger seat 72, a seat behind the driver seat 71 (hereinafter, driver seat rear seat) 73, a seat behind the passenger seat 72 (hereinafter referred to as “driver seat” 72). The rear seat (passenger seat) 74) is included.

  The LF antenna 32 a is installed on the floor between the driver seat 71 and the passenger seat 72, and its communication area (hereinafter referred to as a first communication area 321) is defined for the driver seat 71 and the passenger seat 72. ing. The LF antenna 32 b is installed on the floor under the seat of the driver seat rear seat 73, and its communication area (hereinafter, second communication area 322) is defined with respect to the driver seat rear seat 73.

  The LF antenna 32 c is installed on the floor under the seat of the passenger seat rear seat 74, and its communication area (hereinafter, third communication area 323) is defined with respect to the passenger seat rear seat 74.

  Returning to FIG. The touch sensor 34 is a known sensor that can be touched by a person when the door of the vehicle 5 is unlocked or locked. When the touch sensor 34 is touched, the CPU 51 authenticates the communication device 20, and when the authentication is successful, sends an instruction to unlock or lock the actuator that unlocks or locks the door.

As shown in FIG. 3, the present embodiment includes a navigation ECU 35a, an air conditioner ECU 35b, a seat ECU 35c, and an engine ECU 35d as the ECU 35.
The navigation ECU 35a controls the navigation device 41. The navigation device here is a known device that includes at least a touch panel display, receives an input from an occupant, and displays an image based on image data. When an input is received by the navigation device, the navigation ECU 35a generates image data corresponding to the input, and sends an instruction and image data to display an image based on the image data to the navigation device.

  As shown in FIG. 3, the navigation devices 41 a to 41 d are respectively provided with a driver seat 71, a passenger seat 72, and a driver seat so that passengers in each seat can perform input operations and view images, respectively. It is provided in the vicinity of the rear seat 73 and the passenger seat rear seat 74. The navigation ECU 35a also controls the supply and stop of power to the navigation devices 41a to 41d.

  The air conditioner ECU 35b is a well-known device that controls air volume and temperature adjustment at the air outlet of an air conditioner (hereinafter referred to as air conditioner). Air conditioner outlets are located near each seat. Further, devices (hereinafter referred to as air conditioner input devices) 42a to 42d that receive inputs for adjusting the air volume and temperature from the occupants so that the passengers in each seat can adjust the air volume and temperature, respectively, It is provided in the vicinity of a driver seat 71, a passenger seat 72, a driver seat rear seat 73, and a passenger seat rear seat 74.

  When the air conditioner ECU 35b receives the input, the air conditioner ECU 35b sends an instruction to the air conditioner to change the air volume and temperature at the outlet. The air conditioner ECU 35b also controls the supply and stop of power to the air conditioner input devices 42a to 42d.

  The seat ECU 35c is a well-known device that controls seat adjustment such as the front and rear positions of the seat and the angle of the backrest. Devices (hereinafter referred to as seat input devices) 43a to 43d that receive input from the occupant for adjusting the seat so that the occupant in each seat can adjust the seat are respectively a driver seat 71 and an assistant. It is provided in the vicinity of a seat 72, a driver seat rear seat 73, and a passenger seat rear seat 74.

  When the seat ECU 35c receives the input, the seat ECU 35c sends an instruction to change the position and angle to the actuator that changes the position of the front and rear of the seat and the angle of the backrest. The seat ECU 35c also controls the supply and stop of power to the seat input devices 43a to 43d.

  The engine ECU 35d is a known device that controls the engine. As described above, when the engine start button 33 is touched, the CPU 51 sends an instruction to start the engine after the communication device 20 has been successfully authenticated. Thereafter, when the engine start button 33 is touched again, the CPU 51 sends an instruction to stop the engine.

  The engine start button 33 is provided near the driver seat 71 on the instrument panel so that a passenger sitting in the driver seat 71 can easily operate the engine start button 33. The engine ECU 35d also controls the supply and stop of power to the engine start button 33.

  Supply unit 36 includes a battery (not shown) and a plurality of power relays 361a to 361d. The power relay 361 is a relay that is turned on / off in accordance with an instruction output from the CPU 51. One of the power relays 361 is connected to a battery, and the other is connected to a system and device that supply power when the power relay 361 is turned on.

  The other of the power relay 361a is connected to at least the navigation ECU 35a and the navigation devices 41a to 41d. The other of the power relay 361b is connected to at least the air conditioner ECU 35b and the air conditioner input devices 42a to 42d. The other side of the power relay 361c is connected to at least the seat ECU 35c and the seat input devices 43a to 43d. The other of the power relay 361d is connected to at least the engine ECU 35d and the engine start button 33.

Returning to FIG. The communication device 20 has a function of transmitting identification information for performing authentication when locking and unlocking the vehicle 5 and starting the engine.
The communication device 20 includes a well-known microcomputer having a CPU 21 and a semiconductor memory (hereinafter, memory 22) such as a ROM, a RAM, and a flash memory, an RF transmission unit 23, an RF antenna 24, an LF antenna 25, and an LF reception. Part 26.

  The CPU 21 executes a program such as communication device processing stored in the memory 22 to receive, for example, data obtained by demodulating a signal in the LF band or generate data such as intensity information to obtain the data. Realize functions such as sending. The method of realizing the function of the communication device 20 is not limited to software, and some or all of the elements may be realized using hardware that combines a logic circuit, an analog circuit, and the like.

Identification information is recorded in the memory 22. The identification information represents information for identifying the communication device 20.
The RF transmission unit 23 modulates the data addressed to the vehicle generated by the CPU 21 into an RF band signal. The RF antenna 24 transmits an RF band signal. The LF antenna 25 receives an LF band signal and outputs it to the LF receiver 26. The LF receiver 26 demodulates the LF band signal and outputs the demodulated data to the CPU 21.

[2. processing]
The control device 50 performs the power control process shown in FIG. The communication device 20 performs the communication device processing shown in FIG.

  The power control process is a process for controlling the supply of power in the vehicle 5. The power control process is a process that is periodically started. The communicator process and the communicator process are processes that are triggered by the reception of the search command as will be described later. Hereinafter, a case where the power control system 1 includes one communication device 20 will be described.

[Power control processing]
The power control process executed by the CPU 51 in the control device 50 will be described with reference to the flowchart of FIG. In addition, when the subject is abbreviate | omitted in the following description, CPU51 is made into a subject.

  In S100, the CPU 51 transmits a search command. The search command represents an instruction for causing the communication device 20 to start communication device processing to be described later. The search command is transmitted from the LF antennas 32 a to 32 c via the LF driver 54.

  In subsequent S105, the CPU 51 outputs an instruction to cause the LF antenna 32 installed in the vehicle 5 to transmit radio waves to transmit radio waves in the LF band in a predetermined order toward a plurality of predetermined areas. To do.

  Specifically, the CPU 51 causes the LF antenna 32 a to transmit LF band radio waves toward the first communication area 321, and then transmits the LF band radio waves toward the second communication area 322 to the LF antenna 32 b. Finally, an instruction is output to the LF driver 54 so that the LF antenna 32c transmits radio waves in the LF band toward the third communication area 323. The LF driver 54 sequentially outputs LF band radio waves to the LF antennas 32a, 32b, and 32c in accordance with the instructions.

The CPU 51 records in the memory 52 the number of times that the process of S105 has been executed (hereinafter referred to as the number of LF transmissions).
In S110, the CPU 51 acquires identification information from the communication device 20. As will be described later, when the communication device 20 receives a search command, the communication device 20 records the reception strength of radio waves in the LF band sequentially transmitted from the LF antenna 32 to generate strength information, and the identification recorded in the memory 22 The information and the intensity information are configured to be transmitted using RF band radio waves. In this step, the CPU 51 acquires the identification information transmitted in this way.

  In S115, the CPU 51 determines whether or not the communication device 20 that transmitted the identification information is an authentication device. Specifically, the CPU 51 determines that the communication device 20 is an authentication device when the authentication information recorded in advance in the memory 52 matches the identification information acquired in S110. The CPU 51 shifts the processing to S120 when the communication device 20 is an authentication device, and ends the power control processing when it is not the authentication device.

  In S <b> 120, the CPU 51 acquires the intensity information transmitted from the communication device 20 via the RF antenna 31 and the RF receiver 53. The strength information is information generated by the communication device 20 receiving a radio wave transmitted every time an LF band radio wave is transmitted from the LF antenna 32 and recording the received radio wave reception intensity in the order received. Represent.

In S125, the CPU 51 records the intensity information acquired in S120 in the memory 52.
In S130, when the intensity information acquired in S120 includes a reception intensity indicating a value that is equal to or greater than the intensity threshold, the CPU 51 exceeds the area that is the transmission source of the radio wave corresponding to the reception intensity. Set as area. Hereinafter, the reception intensity indicating a value equal to or greater than the intensity threshold is also referred to as a reception intensity exceeding the threshold.

  The intensity threshold value represents a predetermined value, and is defined as the first threshold value S1 in the present embodiment. The first threshold value S1 is set to a value that is approximately equal to or lower than the reception intensity of the communication device 20 when the communication device 20 exists in the same region as the region where the LF band radio wave is transmitted by the LF antenna 32. Has been. Further, the first threshold value S1 is set to a value larger than the reception intensity by the communication device 20 when the communication device 20 exists in a region different from the region where the LF band radio wave is transmitted by the LF antenna 32. Yes.

The first threshold value S1 may be set to an arbitrary value in such a range. The first threshold value S1 is recorded in advance in the memory 52.
Note that the CPU 51 specifies the corresponding radio wave transmission source based on the number of the received intensity exceeding the threshold value recorded in the intensity information. Specifically, for example, when the reception intensity recorded second in the intensity information is equal to or higher than the first threshold S1, the CPU 51 sets the radio wave transmission source corresponding to the reception intensity to the second communication area 322. And the second communication area 322 is set as an area exceeding the threshold. The CPU 51 records an area exceeding the threshold in the memory 52.

  By the way, in the present embodiment, the LF is sequentially performed a plurality of times within a predetermined time (hereinafter referred to as search time) in order toward a plurality of regions such as the first communication region 321 to the third communication region 323. It is configured to transmit band radio waves. That is, after transmitting the search command, the CPU 51 performs a series of processes of sequentially transmitting radio waves to a plurality of areas such as the first communication area 321 to the third communication area 323 (hereinafter referred to as the number of searches). ), Configured to repeat.

  Specifically, the CPU 51 determines whether or not the number of LF transmissions is equal to or greater than a predetermined number of searches in S135. The number of searches represents the number of times a series of processes for transmitting radio waves to a plurality of areas is repeated. In the present embodiment, the number of searches is set to two and is recorded in the memory 52 in advance. Note that the search time represents the time required to continuously repeat a series of processes for transmitting radio waves to a plurality of areas.

  As described above, the CPU 51 records in the memory 52 the number of LF transmissions as the number of times that the process of S105 has been executed. The CPU 51 shifts the process to S100 when the LF transmission count is less than the search count, and shifts the process to S140 when the LF transmission count is equal to or greater than the search count.

  Subsequently, in S140, in S140, the CPU 51 determines whether or not the amount of change in reception intensity with the passage of time (hereinafter referred to as the elapsed change amount) is less than a predetermined change amount threshold in the region exceeding the threshold. The area exceeding the threshold represents an area where the reception intensity is equal to or higher than the intensity threshold as described above, and is recorded in the memory 52.

  The CPU 51 causes the LF antenna 32 to transmit radio waves repeatedly for the number of searches within a predetermined time in order toward the first communication area 321, the second communication area 322, and the third communication area 323. In 52, intensity information for a plurality of times, that is, the number of searches is recorded.

The CPU 51 determines whether or not the amount of elapsed change in reception intensity in the region exceeding the threshold is equal to or greater than the intensity threshold in the intensity information for the number of searches.
The change amount threshold value represents a value that is about the amount of change in reception intensity before and after the occupant moves the seat in the vehicle. Here, the fact that the elapsed change amount is equal to or greater than the change amount threshold represents that the occupant has moved in the vehicle. The change amount threshold value is recorded in the memory 52 in advance. Note that the change amount threshold may be set to an arbitrary value.

The CPU 51 shifts the process to S145 when the elapsed change amount is less than the change amount threshold in the region exceeding the threshold, and ends the power control process when it is equal to or greater than the change amount threshold.
In S145, the CPU 51 acquires device information. The device information refers to information representing a correspondence relationship between a plurality of predetermined regions in the vehicle and one or a plurality of devices arranged in the plurality of regions.

  The area here represents each of the first communication area 321, the second communication area 322, and the third communication area 323. These areas are defined for one or more seats as described above.

  The device here means a device that operates by direct operation by a person existing in each region, a device that cannot be directly operated by a person present in each region, and that automatically operates according to control by the control device 50, etc. Represents both.

  The direct operation may include an operation using a part of the body such as a hand, and an operation using a remote controller or the like. Specifically, the navigation device 41, the air conditioner input device 42, the sheet input device 43, and the like described above can be included in devices that can be directly operated. Also, for example, although not shown, when it is detected that an occupant is present in an area installed in each area, a lighting device that automatically illuminates the area, or an occupant in an area installed in each area A display in the area that automatically outputs an image or sound when it is detected that the image is present may be included in the automatically operating device.

  An example of the device information is shown in FIG. In the present embodiment, as will be described later, the CPU 51 is configured to determine a seat where a person is present, and the device information is a correspondence between the seat and one or more devices arranged with respect to the seat. The relationship is expressed for each seat.

  In the device information, the engine start button 33 is associated only with the driver seat 71. That is, for areas other than the areas defined for the driver seat 71 among the plurality of areas, in other words, areas defined for the passenger seat 72, the driver seat rear seat 73, and the passenger seat rear seat 74, respectively. Is set so that at least a device for starting the engine is not associated.

In S150, the CPU 51 determines in which of the plurality of areas, such as the first communication area 321 to the third communication area 323, a person exists.
Specifically, the CPU 51 uses the intensity information recorded in the memory 52 to estimate an area where the reception intensity is equal to or greater than a predetermined intensity threshold among the plurality of areas as an area where the communication device 20 exists. The area where the communication device 20 exists is determined as the area where the occupant exists.

  In the present embodiment, as shown in FIG. 6, the first threshold value S1 and the second threshold value S2 smaller than the first threshold value S1 are set in advance as the strength threshold values with respect to the reception strength. The first threshold value S1 and the second threshold value S2 are recorded in the memory 52 in advance. The distance shown in FIG. 6 represents the distance from the center of the communication area of the LF antenna 32.

  Although the LF antenna 32 is not shown, in the present embodiment, the transmission intensity indicating the intensity at the time of transmitting a radio wave is substantially constant within the communication area, and from the communication area outside the communication area. It is comprised so that it may become small as it leaves | separates. In the present embodiment, the first threshold S1 is set to the magnitude of the reception intensity at a position in the communication area, and the second threshold S2 is the magnitude of the reception intensity at a position that is outside the communication area and relatively close to the communication area. Is set.

First, the CPU 51 determines a region where an occupant is present by using the first threshold value S1 as an intensity threshold value.
For example, as illustrated in FIG. 5, when only the reception intensity corresponding to the first communication area 321 is equal to or greater than the first threshold S1, the CPU 51 determines that the first communication area is an area where a person exists. .

  Since the first communication area 321 is defined for a plurality of seats, in the present embodiment, the CPU 51 further determines in which area of the plurality of seats a person is present. to decide. For this determination, the second threshold value S2 is used.

  Specifically, the CPU 51 has a reception intensity corresponding to the second communication area 322 that is equal to or greater than the second threshold S2, and a reception intensity corresponding to the third communication area 323 is less than the second threshold S2. The area determined for the driver's seat 71 is determined to be an area where a person exists. In other words, it is determined that the driver's seat 71 is a seat where a person exists.

  Further, when the reception intensity corresponding to the second communication area 322 is less than the second threshold S2, and the reception intensity corresponding to the third communication area 323 is greater than or equal to the second threshold S2, the CPU 51 The area determined for 72 is determined to be an area where a person exists. In other words, it is determined that the passenger seat 72 is a seat where a person exists.

  When the reception intensity corresponding to the second communication area 322 is equal to or higher than the first threshold S1 and the reception intensity corresponding to the remaining communication areas is less than the second threshold S2, the CPU 51 determines that the second communication area 322 That is, it is determined that an area defined for the driver's seat rear seat 73 is an area where a person exists. In other words, the driver's seat rear seat 73 is determined to be a seat where a person exists.

  Similarly, when the reception intensity corresponding to the third communication area 323 is equal to or greater than the first threshold S1 and the reception intensity corresponding to the remaining communication areas is less than the second threshold S2, the CPU 51 The communication area 323, that is, the area determined for the passenger seat rear seat 74 is determined to be an area where a person exists. In other words, it is determined that the passenger seat rear seat 74 is a seat where a person exists.

Note that the CPU 51 determines that there is no person in the vehicle 5 when the reception intensities corresponding to the first communication area 321 to the third communication area 323 are all less than the first threshold S1.
The CPU 51 records, in the memory 52, an area determined that there is a person. If the CPU 51 determines that no person is present in the vehicle 5, the CPU 51 records that no person is present in the vehicle 5 in the memory 52.

  In S155, the CPU 51 identifies the peripheral device and the non-peripheral device based on the determination result in S150 and the device information. A peripheral device represents a device corresponding to a region where a person exists in the vehicle. A non-peripheral device represents a device excluding peripheral devices among devices included in the device information. That is, the non-peripheral device represents a device corresponding to a region where no person exists in the vehicle.

  For example, when it is determined that there is a person in the driver's seat 71, the CPU 51 displays the navigation device 41a, the air conditioner input device 42a, the seat input device 43a, and the engine start button 33 arranged corresponding to the driver's seat 71 as peripheral devices. As specified.

  Further, in this case, the CPU 51 identifies all of the devices arranged in a region excluding the region determined for the driver's seat 71 among the plurality of regions as non-peripheral devices. That is, the navigation devices 41b to 41d, the air conditioner input devices 42b to 42d, and the seat input devices 43b to 43d arranged in correspondence with the passenger seat 72, the driver seat rear seat 73, and the passenger seat rear seat 74 are identified as non-peripheral devices. To do.

  For example, if it is determined in S150 that there is a person in the passenger seat 72, the CPU 51 identifies the navigation device 41b, the air conditioner input device 42b, and the seat input device 43b arranged corresponding to the passenger seat 72 as peripheral devices. To do.

  Further, in this case, the CPU 51 identifies all of the devices arranged in a region excluding the region determined for the driver's seat 71 among the plurality of regions as non-peripheral devices. That is, navigation devices 41a, 41c to 41d, air conditioner input devices 42a, 42c to 42d, seat input devices 43a, 43c to 43d, which are arranged corresponding to the driver seat 71, the driver seat rear seat 73, and the passenger seat rear seat 74, And the engine start button 33 is specified as a non-ambient device.

  In S160, the CPU 51 determines whether or not the vehicle 5 is stopped. The stop here means that the vehicle speed is zero. Specifically, the CPU 51 determines that the vehicle 5 is stopped when the vehicle speed acquired from the vehicle speed sensor that detects the vehicle speed is zero. Note that 0 here is not limited to 0 in a strict sense, and may not be strictly 0 as long as the desired effect is achieved.

The CPU 51 shifts the process to S165 when the vehicle 5 is stopped, and ends the power control process when the vehicle 5 is not stopped.
In S165, the CPU 51 outputs a command for controlling power (hereinafter referred to as a control command). The CPU 51 outputs a command as a control command to supply power to the peripheral devices and perform control not to supply power to all the non-peripheral devices. Specifically, the CPU 51 instructs the navigation ECU 35a, the air conditioner ECU 35b, the seat ECU 35c, and the engine ECU 35d to supply and stop power to peripheral devices and non-peripheral devices connected to the ECUs. Output. Then, the power control process ends.

[Communication equipment processing]
The communication device process executed by the CPU 21 will be described with reference to the flowchart of FIG. When the subject is omitted in the following description, the CPU 21 is the subject.

  In S200, the CPU 21 determines whether or not a search command has been received. If a search command is received, the process proceeds to S210, and if not received, the communication device process is terminated.

In S <b> 210, the CPU 21 records the reception intensity when receiving the LF band radio waves in the memory 22 in the order in which the LF band radio waves are received.
As described above, in the present embodiment, the LF antenna 32 transmits LF band radio waves in the order of the LF antenna 32a, the LF antenna 32b, and the LF antenna 32c. The time interval when the LF band radio wave is transmitted is predetermined and recorded in the memory 22. Based on the time interval, the CPU 21 sequentially records the received intensity corresponding to the LF band radio wave transmitted from each LF antenna 32 in the memory 52. As described above, the information in which the reception intensity is recorded in order is the intensity information.

In S220, the CPU 21 acquires identification information recorded in the memory 22.
In S230, the CPU 21 outputs the intensity information and the identification information to the RF transmission unit 23. As a result, the intensity information and the identification information are transmitted as RF band radio waves via the RF antenna 24.

  In this way, each time the communication device 20 receives a search command, the communication device 20 records the reception strength of radio waves in the LF band sequentially transmitted to the first communication region 321 to the third communication region 323 in the order received. The intensity information is configured to be transmitted using RF band radio waves.

[Operation]
An example of the operation of the power control system 1 configured as described above will be described. Below, as shown in FIG. 8 as an example, the case where the passenger | crew who carried the communication apparatus 20 is located in the driver's seat rear seat 73 is demonstrated.

  The in-vehicle device 10 outputs a search command and sequentially transmits LF band radio waves using the LF antenna 32. The communication device 20 receives the search command, generates strength information in which the reception strength of the radio waves in the LF band is recorded in order, and transmits the strength information to the in-vehicle device 10. In the present embodiment, since the number of searches is set to two, the in-vehicle device 10 performs a series of operations until the LF band radio wave is sequentially transmitted from the LF antenna 32, and the communication device 20 until the intensity information is transmitted. A series of operations is repeated twice.

  The communication device 20 is transmitted from the LF antenna 32b to the second communication area 322 among the LF band radio waves transmitted from the three LF antennas 32 when the communication device 20 is located in the driver's seat rear seat 73. Only the LF band radio wave is received at a reception intensity that is equal to or higher than the first threshold S1. In addition, the communication device 20 receives the LF band radio waves transmitted to the first communication area 321 and the third communication area 323 with a reception intensity that is less than the second threshold S1. The communication device 20 transmits the strength information representing the reception strength in this way.

  When the in-vehicle device 10 receives the strength information, the in-vehicle device 10 specifies the second communication region 323 as a region exceeding the threshold. Next, the in-vehicle device 10 has no movement of a person in the vehicle when the elapsed change amount for the received intensity in the region exceeding the threshold is less than the change amount threshold in the intensity information received for the first time and the second time. Judge that Subsequently, the in-vehicle device 10 determines that the communication device 20 is located in the second communication area 322 based on the strength information and the device information, and the driver seat rear seat 73 where the communication device 20 is located has the person 100. Judged to be a seat.

  The in-vehicle device 10 supplies power to peripheral devices corresponding to the driver's seat rear seat 73. Thereby, the person 100 existing in the driver's seat rear seat 73 can use the peripheral devices. Moreover, the vehicle-mounted apparatus 10 stops supply of electric power with respect to a non-ambient apparatus. Thereby, the power consumption in the vehicle 5 is reduced.

[3. effect]
According to the embodiment detailed above, the following effects can be obtained.
(1) The control device 50 controls the power supply in the vehicle 5. The control device 50 includes one or a plurality of predetermined communication areas 321 to 323 in the vehicle 5 and one or a plurality of communication areas 323 to 323 arranged in the first communication area 321 to the third communication area 323. Device information that represents the correspondence with the device for each area is acquired. The control device 50 determines in which of the first communication area 321 to the third communication area 323 a person is present.

  Based on the device information and the determination result by the region determination unit, the control device 50 specifies a peripheral device representing a device corresponding to the region where the person exists. The control device 50 performs control such that power is supplied to the peripheral devices and power is not supplied to at least some of the non-peripheral devices that represent devices other than the peripheral devices among the devices included in the device information.

  According to such a configuration, since a person existing in the vehicle can use the peripheral device, it is possible to prevent the convenience of the person existing in the vehicle from being damaged. Furthermore, since power is not supplied to at least some of the non-ambient devices, power consumption can be reduced.

  (2) The control device 50 causes the LF antenna 32 installed in the vehicle 5 to transmit radio waves to transmit radio waves in order toward a plurality of areas. The control device 50 is a communicable device 20 that can be carried by a person and that is movable, and displays the received radio wave reception intensity in the order in which the radio waves are received and received every time radio waves are transmitted from the LF antenna 32. The strength information is acquired from the communication device 20 that transmits the strength information.

  The control device 50 uses the strength information to estimate, as a region where the communication device 20 is present, a region in which the reception strength is equal to or greater than a predetermined strength threshold among a plurality of regions, and determines the region where the communication device 20 is present as a person. Is determined to be present.

According to this, when the communication device 20 is carried by an occupant or when the communication device 20 is placed on the occupant side, it is possible to accurately estimate the region where the occupant is present.
(3) The control device 50 causes the LF antenna 32 to transmit a radio wave a plurality of times in a predetermined time in order toward a plurality of regions. The control apparatus 50 acquires intensity information for a plurality of times. The control device 50 determines whether any of the plurality of areas has a human power when the amount of change in the reception intensity over time is less than a predetermined change amount threshold in an area where the reception intensity is equal to or greater than the intensity threshold. Determine if exists.

According to this, when a person is not moving in the vehicle, it is possible to specify a region where the person exists in the vehicle.
(4) The control device 50 acquires identification information representing information for identifying the communication device 20 from the communication device 20. In the control device 50, the communication device 20 is an authentication device when the information for identifying the authentication device functioning as a key of the vehicle 5 recorded in advance in the recording unit in the vehicle 5 matches the identification information. Judge.

When the communication device 20 is an authentication device, the control device 50 supplies power to the peripheral devices and performs control to not supply power to at least some of the non-peripheral devices.
According to this, power control is performed when the communication device 20 is an authentication device. That is, since the authentication device functioning as a vehicle key and the communication device 20 can be used together, the convenience can be improved.

  (5) The plurality of areas include areas other than the driver's seat in the vehicle 5, and the control device 50 activates at least the engine when it is determined that there is a person in the area other than the driver's seat. Do not supply power to the device.

The device for starting the engine here represents the engine start button 33.
According to this, even if there is a person other than the driver's seat 71, the engine cannot be started if there is no person in the driver's seat 71. That is, even if there is a person other than the driver's seat 71, even if a third person gets into the driver's seat 71, power is not supplied to the engine start button 33 and the engine is not started. 5 theft can be suppressed.

  (6) The first communication area 321 to the third communication area 323 are respectively defined for one or a plurality of seats in the vehicle 5. According to this, it can control about supply of the electric power with respect to the apparatus arrange | positioned with respect to the 1 or several seat.

(7) When the vehicle 5 is stopped, the control device 50 performs control to supply power to the peripheral devices and not supply power to at least a part of the non-peripheral devices.
According to this, when the vehicle is stopped, since power is not supplied to at least a part of the device corresponding to the region where no person exists in the vehicle, power consumption by the stopped battery is suppressed. can do.

[4. Other Embodiments]
As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to the above-mentioned embodiment, It can implement in various deformation | transformation.

  (1) In the above embodiment, the plurality of areas in which the LF band radio waves are sequentially transmitted by the LF antenna 32 are the driver seat 71 and the passenger seat 72, the driver seat rear seat 73, and the passenger seat rear seat 74, respectively. Although it has been defined, it is not limited to this. The plurality of areas may be defined for any one or a plurality of seats in the vehicle. In addition, the plurality of regions may be determined for any region in the vehicle, not for one or a plurality of seats in the vehicle. In addition, the order in which radio waves are transmitted to a plurality of areas may be arbitrarily determined.

  (2) In the embodiment described above, the control device 50 determines an area in which the reception intensity is equal to or greater than the intensity threshold among a plurality of areas as an area where the communication device 20 exists, that is, an area where a person exists. It is not limited to. The control device 50 may determine an area where the reception intensity is maximum among a plurality of areas as an area where the communication device 20 exists, that is, an area where a person exists.

(3) In the above embodiment, the number of searches is set to two, but is not limited to this. The number of searches may be arbitrarily determined.
For example, the number of searches may be set to one. In this case, the CPU 51 may be configured to always shift the process to S150 in S140. For example, the number of searches may be set to a plurality of times of 3 or more. In this case, the CPU 51 may be configured to determine whether or not the average value of the elapsed change amount is less than the change amount threshold value in S140, for example.

  (4) In the above-described embodiment, the control device 50 specifies an area where the reception intensity is equal to or greater than the intensity threshold as an area exceeding the threshold. However, the present invention is not limited to this. For example, the control device 50 may specify an area corresponding to the reception intensity indicating the maximum value in the intensity information as an area exceeding the threshold.

  (5) In the above embodiment, the CPU 51 outputs, as a control command, a command for controlling power to be supplied to peripheral devices and not supplying power to all non-peripheral devices in S165. It is not limited. In S165, the CPU 51 may output, as a control command, a command for controlling power to be supplied to the peripheral devices and not supplying power to at least some of the non-peripheral devices.

  (6) In the above embodiment, the CPU 51 is configured to output a control command when the vehicle 5 is stopped. However, the present invention is not limited to this. The CPU 51 may be configured to output a control command while the vehicle 5 is traveling. In this case, S160 may be omitted in the flowchart shown in FIG.

  (7) In the above embodiment, the control device 50 is configured not to supply power to the engine start button 33 as a device for starting the engine when it is determined that there is a person in the area excluding the driver's seat 71. However, the present invention is not limited to this. The control device 50 may be configured such that any device related to engine driving is a device that starts the engine and does not supply power to the device. For example, the control device 50 may be configured not to supply electric power to an engine ECU that executes engine control instead of the engine start button 33.

  (8) In the above embodiment, the power control system 1 includes one communication device 20, but is not limited to this. The power control system 1 may include a plurality of communication devices 20.

  In this case, the control device 50 may determine a region where a person exists based on the strength information for each communication device 20. Identification of each communication device 20 among the plurality of communication devices 20 may be performed using identification information. In this case, a plurality of areas exceeding the threshold may be set in S130. In such a case, the control device 50 may be configured to shift the process to S145 only when the elapsed change amount is less than the change amount threshold value in all the threshold value exceeding regions in S140.

  (9) In the above embodiment, when it is determined that there is no person in the vehicle 5, the CPU 51 may output a command to turn off the power relays 361a to 361c as a control command.

  (10) In the above-described embodiment, in the supply unit 36, a device having the same function and an ECU that controls the device are connected to each power relay 361. For example, the navigation device 41 and the navigation ECU 35a having devices related to navigation are connected to the power relay 361a. However, the configuration of the supply unit 36 is not limited to this.

For example, the supply unit 36 may be configured such that devices arranged corresponding to the same communication area or seat are connected to each power relay 361.
Specifically, in the supply unit 36, a navigation device 41a, an air conditioner input device 42a, a seat input device 43a, and an engine start button 33 are connected to the power relay 361a as devices arranged corresponding to the driver's seat 71. Also good. Similarly, other power relays may be connected to devices arranged corresponding to each seat.

  And the control apparatus 50 may be comprised so that the electric power relay 361a may be turned on, for example, and it may supply electric power to the apparatus corresponding to the driver's seat 71, when it judges that the driver's seat 71 is an area | region where a person exists. . Further, the control device 50 may be configured not to supply power to the device corresponding to the driver seat 71 by turning off the power relay 361a when the driver seat 71 is not determined to be a region where a person exists. Good.

  (11) In the above-described embodiment, the control device 50 estimates a region where the communication device 20 exists based on the reception intensity of the radio wave from a plurality of regions in the vehicle, and there is a person in the region in the vehicle. Although it was determined to be an area, it is not limited to this. Even if the control device 50 estimates a region or seat where a person is present in the vehicle based on various well-known configurations, such as using a sensor that detects the presence of a person in each seat based on weight, for example. Good.

  (12) A plurality of functions of one constituent element in the above embodiment may be realized by a plurality of constituent elements, or a single function of one constituent element may be realized by a plurality of constituent elements. . Further, a plurality of functions possessed by a plurality of constituent elements may be realized by one constituent element, or one function realized by a plurality of constituent elements may be realized by one constituent element. Moreover, you may abbreviate | omit a part of structure of the said embodiment. In addition, at least a part of the configuration of the above embodiment may be added to or replaced with the configuration of the other embodiment. In addition, all the aspects included in the technical idea specified only by the wording described in the claim are embodiment of this invention.

  (13) In addition to the power control system 1, the control device 50, the CPU 51, the communication device 20, and the CPU 21 described above, a program for causing the CPU 51 and the CPU 21 to function, and a non-transitional actual recording medium such as a semiconductor memory that records the program The present invention can also be realized in various forms such as a power control method.

[Correspondence Relationship Between Configuration of Embodiment and Configuration of Present Invention]
The control device 50 corresponds to a transmission instruction unit, an identification acquisition unit, an authentication unit, an intensity acquisition unit, a device acquisition unit, an area determination unit, an identification unit, and a supply control unit. The LF antenna 32 corresponds to a transmitter, and the RF antenna 31 corresponds to a receiver.

  S105 corresponds to processing as a transmission instruction unit, S110 corresponds to processing as an identification acquisition unit, S115 corresponds to processing as an authentication unit, and S120 corresponds to processing as an intensity acquisition unit. Further, S145 corresponds to processing as a device acquisition unit, S150 corresponds to processing as an area determination unit, S155 corresponds to processing as a specifying unit, and S165 corresponds to processing as a supply control unit.

  The first communication area 321 to the third communication area 323 correspond to a plurality of areas.

  32 LF antenna, 50 controller, 52 memory.

Claims (7)

In a vehicle, a control device that controls the supply of electric power,
Device acquisition configured to acquire device information representing a correspondence relationship between a plurality of predetermined regions in the vehicle and one or a plurality of devices arranged in the regions. Part (S145),
An area determination unit (S150) configured to determine in which of the plurality of areas a person exists;
A specifying unit (S155) configured to specify a peripheral device representing a device corresponding to a region where the person exists based on the device information and a determination result by the region determining unit;
Power is supplied to the peripheral devices, and control is performed so that power is not supplied to at least some of the non-peripheral devices representing devices other than the peripheral devices among the devices included in the device information. Supply control unit (S165),
A control device comprising: The control device according to claim 1,
A transmission instruction unit (S105) configured to cause a transmitter installed in the vehicle to transmit radio waves to transmit radio waves in order toward the plurality of areas;
A portable communication device that can be carried by a person, receives radio waves transmitted each time radio waves are transmitted from the transmitter, and transmits the received strength information of received radio waves in the order received. A strength acquisition unit (S120) configured to acquire the strength information from a communication device;
Further comprising
The region determination unit uses the strength information to estimate a region where the reception strength is equal to or higher than a predetermined strength threshold among the plurality of regions as a region where the communication device exists, and the communication device exists. A control device configured to determine a region to be operated as a region where the person exists. The control device according to claim 2,
The transmission instruction unit is configured to cause the transmitter to transmit a radio wave a plurality of times within a predetermined time in order toward the plurality of areas,
The intensity acquisition unit is configured to acquire the intensity information for the plurality of times,
The region determination unit determines which one of the plurality of regions when at least a change amount of the reception strength with the passage of time is less than a predetermined change amount threshold value in a region where the reception strength is equal to or greater than the strength threshold value. A control device configured to determine whether a person is present in the area. A control device according to claim 2 or claim 3, wherein
An identification acquisition unit (S110) configured to acquire identification information representing information for identifying the communication device from the communication device;
When the information for identifying the authentication device functioning as the vehicle key recorded in advance in the recording unit of the vehicle matches the identification information, the communication device is determined to be the authentication device. An authentication unit (S115) configured as follows:
With
The supply control unit is configured to perform control to supply power to the peripheral device and not to supply power to at least a part of the non-peripheral device when the communication device is the authentication device. Control device. The control device according to any one of claims 1 to 4,
The plurality of areas include an area excluding a driver's seat in the vehicle,
The supply control unit is configured not to supply power to at least a device that starts the engine when the region determination unit determines that a person is present in a region other than the driver's seat. The control device according to any one of claims 1 to 5,
The plurality of areas are respectively determined for one or a plurality of seats in the vehicle. The control device according to any one of claims 1 to 6,
The supply control unit is configured to perform control to supply power to the peripheral devices and not to supply power to at least a part of the non-peripheral devices when the vehicle is stopped. apparatus.