WO2016152777A1

WO2016152777A1 - Onboard device and vehicle interior light control system

Info

Publication number: WO2016152777A1
Application number: PCT/JP2016/058700
Authority: WO
Inventors: 奇英李
Original assignee: 株式会社オートネットワーク技術研究所; 住友電装株式会社; 住友電気工業株式会社
Priority date: 2015-03-25
Filing date: 2016-03-18
Publication date: 2016-09-29
Also published as: JP2016182839A

Abstract

Provided are an onboard device and a vehicle interior light control system provided with said onboard device, with which it is possible to prevent reductions in convenience and reduce needless illumination from a vehicle interior light. An onboard device 1 for controlling the extinguishing of an illuminated vehicle interior light 2 is provided with a locking sensor unit for sensing that a vehicle door has been locked, a communication unit 4 for conducting wireless communication with a portable device capable of locking the vehicle door, a specification unit for specifying the location of the portable device on the basis of the wireless communication conducted by the communication unit 4, and a control unit 11 for extinguishing the vehicle interior light when the specification unit has specified that the portable device is located within a prescribed range outside of the passenger compartment and the locking sensor unit has sensed that the vehicle door is locked.

Description

In-vehicle device and interior light control system

The present application relates to an in-vehicle device that controls turning off of a lit interior lamp and an interior light control system including the in-vehicle apparatus.

Conventionally, a method for controlling lighting or extinguishing of an interior lamp is known. Japanese Patent Application Laid-Open No. H10-228867 discloses a vehicle lighting system that can turn on lighting for a vehicle including an interior lamp so that the lighting time depends on the locking state of the vehicle door and the number of times the operation for locking the vehicle door is performed. An illumination control device is disclosed. Further, Patent Document 2 discloses a vehicle illumination that detects whether a portable device possessed by a user is in a vehicle interior or outside a vehicle interior and can turn on an interior lamp with a lighting time according to the detection result. A control system is disclosed.

JP 2010-69945 A JP 2005-289226 A

However, since the lighting control time for the vehicle described in Patent Document 1 is set based on the operation of locking the vehicle door by the user, there is a possibility that the lighting time of the lighting becomes longer than necessary. . Similarly, in the vehicle lighting control system described in Patent Document 2, each time to be turned on when the portable device is in the vehicle interior and the exterior of the vehicle interior is set in advance, so depending on the set time, There is a possibility that the lighting time of the lamp becomes longer than necessary. Furthermore, since the vehicle lighting control device and the lighting control system turn off the interior lamp after the set lighting time has elapsed, it is inconvenient when the user still needs lighting even after the lighting time has elapsed. is there.

An object of the present application is to provide an in-vehicle device capable of reducing unnecessary lighting of an interior lamp while maintaining convenience, and an interior lamp control system including the in-vehicle apparatus.

An in-vehicle device according to an aspect of the present invention is an in-vehicle device that controls turning off of an interior lamp that is lit, and is wireless between a lock detection unit that detects that a vehicle door is locked and a portable device. A communication unit that performs communication, a specifying unit that specifies a location of the portable device based on wireless communication by the communication unit, the specifying unit specifies that the portable device is located outside a vehicle compartment, and the And a controller that turns off the interior lamp when the locking detection unit detects locking of the vehicle door.

An in-vehicle device according to an aspect of the present invention is an in-vehicle device that controls turning off of a lighted interior lamp, and is based on a communication unit that performs wireless communication with a portable device, and wireless communication by the communication unit When the identification unit identifies the location of the portable device and the identification unit identifies that the portable device is located outside a predetermined area outside the vehicle interior, the interior lamp is turned off, and the portable device is A control unit configured to prevent the interior lamp from being turned off when the specifying unit specifies that the vehicle is located within a predetermined area.

An interior light control system according to an aspect of the present invention includes an in-vehicle device having a communication unit that transmits a position specifying signal, the position specifying signal, and a response signal corresponding to the received position specifying signal. The vehicle-mounted device receives the response signal transmitted from the portable device at the communication unit, and controls the turning off of the interior lamp that is lit based on the received response signal. In the interior light control system, the in-vehicle device specifies a position of the portable device based on a lock detection unit that detects that a vehicle door is locked and the response signal received by the communication unit. A specifying unit; and a control unit that turns off the interior lamp when the specifying unit specifies that the portable device is located outside a passenger compartment and the locking detection unit detects locking of a vehicle door.

An interior light control system according to an aspect of the present invention includes an in-vehicle device having a communication unit that transmits a position specifying signal, the position specifying signal, and a response signal corresponding to the received position specifying signal. The vehicle-mounted device receives the response signal transmitted from the portable device at the communication unit, and controls the turning off of the interior lamp that is lit based on the received response signal. In the interior light control system, the in-vehicle device includes a specifying unit that specifies a position of the portable device based on the response signal received by the communication unit, and the portable device is outside a predetermined area outside the vehicle interior. When the specifying unit specifies that it is located, the interior lamp is turned off, and when the specifying unit specifies that the portable device is located in the predetermined area, the interior lamp is not turned off. And a control unit.

Note that the present application can be realized not only as an in-vehicle device and an interior light control system having such a characteristic processing unit, but also as an extinguishing control method using such characteristic processing as a step. Can be realized as a program for causing a computer to execute. Moreover, it is realizable as a semiconductor integrated circuit which implement | achieves a part or all of vehicle equipment and a vehicle interior light control system, or it can implement | achieve as other systems containing a vehicle equipment and a vehicle interior light control system.

According to the above, it is possible to provide an in-vehicle device capable of reducing unnecessary lighting of the interior lamp while maintaining convenience, and an interior lamp control system including the in-vehicle apparatus.

It is a schematic diagram which shows the structure of the interior lamp control system in Embodiment 1. It is a block diagram which shows the structure of body ECU. It is a block diagram which shows the structure of a portable device. It is explanatory drawing explaining the location position of a portable machine when turning off the interior lamp in which body ECU is lighting. It is a flowchart which shows the process sequence of body ECU when the interior lamp which is lighted turns off according to the location of the portable device. It is explanatory drawing explaining the location position of a portable machine when turning off the interior lamp with which body ECU in the modification is lighted. It is a flowchart which shows the process sequence of body ECU when the interior lamp which is lighted turns off according to the location of the portable device. It is a flowchart which shows the process sequence in case the body ECU in Embodiment 2 turns off the lighted vehicle interior light according to the location position of a portable device.

[Description of Embodiment of the Present Invention]
First, embodiments of the present invention will be listed and described. Moreover, you may combine arbitrarily at least one part of embodiment described below.

(1) An in-vehicle device according to one aspect of the present invention is an in-vehicle device that controls turning off of an interior lamp that is lit, and includes a locking detection unit that detects that a vehicle door is locked, and a portable device. A communication unit that performs wireless communication between the communication unit, a specifying unit that specifies a location of the portable device based on wireless communication by the communication unit, and the specifying unit that specifies that the portable device is located outside a vehicle compartment. And when the said lock | rock detection part detects the lock | rock of the said vehicle door, the control part which turns off the said interior lamp is provided.

In the present application, the lock detection unit detects that the vehicle door is locked. The communication unit performs wireless communication with the portable device. The specifying unit specifies the location of the portable device based on wireless communication by the communication unit. The control unit turns off the interior lamp when the specifying unit specifies that the portable device is located outside the passenger compartment and the lock detection unit detects the lock of the vehicle door. Therefore, for example, the vehicle-mounted device can turn off the interior lamp when the user gets off the vehicle and leaves the vehicle without getting in again, so that useless lighting of the interior lamp can be reduced. In addition, for example, when the user gets out of the vehicle and then gets into the vehicle again shortly after the user gets out of the vehicle, the on-board light that is turned on can be prevented from being turned off, thus maintaining convenience. be able to.

(2) An in-vehicle device according to an aspect of the present invention is an in-vehicle device that controls turning off of an interior lamp that is turned on, and includes a communication unit that performs wireless communication with a portable device, and wireless communication performed by the communication unit. Based on communication, when the identification unit identifies the location of the portable device and the identification unit identifies that the portable device is located outside a predetermined area outside the passenger compartment, the interior lamp is turned off and the portable A control unit configured to prevent the interior lamp from being turned off when the specifying unit specifies that the machine is located within the predetermined area.

In this application, the communication unit performs wireless communication with the portable device. The specifying unit specifies the location of the portable device based on wireless communication by the communication unit. When the specifying unit specifies that the portable device is located outside a predetermined area outside the vehicle compartment, the control unit turns off the interior lamp. In addition, the control unit does not turn off the interior lamp when the specifying unit specifies that the portable device is located within the predetermined area. Therefore, for example, the vehicle-mounted device can turn off the interior lamp when the user gets off the vehicle and leaves the vehicle without getting in again, so that useless lighting of the interior lamp can be reduced. In addition, for example, when the user gets out of the vehicle and then gets into the vehicle again shortly after the user gets out of the vehicle, the on-board light that is turned on can be prevented from being turned off, thus maintaining convenience. be able to.

(3) Preferably, the control unit is configured not to turn off the interior lamp when the specifying unit specifies that the portable device is located in a vehicle interior.

In the present application, the control unit does not turn off the interior lamp when the specifying unit specifies that the portable device is located in the passenger compartment. Therefore, the in-vehicle device can detect that the user carrying the portable device is located in the vehicle interior by specifying that the portable device is located in the vehicle interior. For this reason, the in-vehicle device can prevent the user from unintentionally turning off the interior lamp that is turned on when the user is located in the vehicle interior, thereby preventing a decrease in convenience. be able to.

(4) Preferably, the control unit is configured to immediately turn off the interior lamp when the specifying unit specifies that the portable device is located outside the communication range of the communication unit.

In the present application, the control unit immediately turns off the interior lamp when the specifying unit specifies that the portable device is located outside the communication range of the communication unit. Therefore, when the portable device is located outside the communication range of the communication unit, the vehicle-mounted device is located at a position sufficiently away from the vehicle and the user who owns the portable device does not get into the vehicle again. As a result, the interior lamp can be turned off immediately. Therefore, the in-vehicle device can further reduce unnecessary lighting of the interior lamp.

(5) The specifying unit repeatedly specifies the location of the portable device, and the control unit sets the specified location every time the specifying unit specifies the location of the portable device. A configuration in which the corresponding control is performed is preferable.

In the present application, the specifying unit repeatedly specifies the location of the portable device. The control unit performs control according to the specified location every time the specification unit specifies the location of the portable device. Therefore, the vehicle-mounted device can flexibly turn off the interior lamp that is turned on according to the position of the portable device, even when the user carrying the portable device moves outside the vehicle interior.

(6) The communication unit transmits a position specifying signal to the portable device, and receives a response signal corresponding to the position specifying signal from the portable device. A configuration in which the location of the portable device is specified based on a response signal received by the communication unit is preferable.

In the present application, the communication unit transmits a position specifying signal to the portable device, and receives a response signal corresponding to the position specifying signal from the portable device. The specifying unit specifies the location of the portable device based on the response signal received by the communication unit. Therefore, for example, the in-vehicle device can specify the position accuracy of the portable device by specifying the position of the portable device based on the received signal strength of the response signal.

(7) The interior light control system according to an aspect of the present invention includes an in-vehicle device having a communication unit that transmits a position specifying signal, the position specifying signal received, and the received position specifying signal according to the received position specifying signal. The vehicle-mounted device receives the response signal transmitted from the portable device at the communication unit, and turns off the interior lamp that is turned on based on the received response signal The in-vehicle device controls the position of the portable device based on the lock detection unit that detects that the vehicle door is locked and the response signal received by the communication unit. And a control unit that turns off the interior lamp when the specifying unit specifies that the portable device is located outside the passenger compartment and the locking detection unit detects locking of the vehicle door. Prepare.

In the present application, the in-vehicle device transmits a position specifying signal to the portable device at the communication unit, and receives a response signal corresponding to the transmitted position specifying signal from the portable device. The in-vehicle device detects that the vehicle door is locked by the locking detection unit. The in-vehicle device specifies the location of the portable device at the specifying unit. The identifying unit identifies the location based on the response signal received by the communication unit. In the vehicle-mounted device, when the specifying unit specifies that the portable device is located outside the vehicle compartment, and the lock detection unit detects locking of the vehicle door, the control unit turns off the interior lamp. Therefore, for example, the in-vehicle device can turn off the interior lamp when the user who owns the portable device gets off the vehicle and leaves the vehicle without getting in again. can do. In addition, since the vehicle-mounted device can be turned off, for example, when the user who owns the portable device gets out of the vehicle and then enters the vehicle again shortly, Convenience can be maintained.

(8) The interior light control system according to an aspect of the present invention includes an in-vehicle device having a communication unit that transmits a position specifying signal, the position specifying signal, and the received position specifying signal. The vehicle-mounted device receives the response signal transmitted from the portable device at the communication unit, and turns off the interior lamp that is turned on based on the received response signal A vehicle interior light control system, wherein the in-vehicle device is configured to identify a position of the portable device based on the response signal received by the communication unit; and When the specifying unit specifies that the vehicle is located outside the area, the interior lamp is turned off. When the specifying unit specifies that the portable device is located within the predetermined area, the interior lamp is not turned off. And a certain control unit.

In the present application, the in-vehicle device transmits a position specifying signal to the portable device at the communication unit, and receives a response signal corresponding to the transmitted position specifying signal from the portable device. The in-vehicle device specifies the location of the portable device at the specifying unit. The identifying unit identifies the location based on the response signal received by the communication unit. When the specifying unit specifies that the portable device is located outside the predetermined area outside the vehicle compartment, the in-vehicle device turns off the interior lamp in the control unit. In addition, the control unit does not turn off the interior lamp when the specifying unit specifies that the portable device is located within the predetermined area. Therefore, for example, the in-vehicle device can turn off the interior lamp when the user who owns the portable device gets off the vehicle and leaves the vehicle without getting in again. can do. In addition, since the vehicle-mounted device can be turned off, for example, when the user who owns the portable device gets out of the vehicle and then enters the vehicle again shortly, Convenience can be maintained.

[Details of the embodiment of the present invention]
A specific example of the in-vehicle device according to the embodiment of the present invention will be described below with reference to the drawings. In the specific example shown below, an example in which the in-vehicle device according to the present invention is applied to an interior light control system that controls turning off and lighting of an interior lamp will be described. It may be applied to various systems. Moreover, in the specific example shown below, although the example which applies the vehicle equipment which concerns on this invention to body ECU which controls a body type vehicle equipment is demonstrated, the vehicle equipment concerning this invention is provided independently in a vehicle. The vehicle-mounted device may be applied to various other vehicle-mounted devices. Furthermore, the present invention is not limited to these exemplifications, but is defined by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

(Embodiment 1)
FIG. 1 is a schematic diagram illustrating the configuration of the interior lamp control system according to the first embodiment. The interior light control system according to the first embodiment includes a body ECU (Electronic Control Unit) 1 and an interior light 2 mounted on a vehicle C, and a portable device 3. The body ECU 1 is a control device that controls body-based in-vehicle devices. The body ECU 1 transmits and receives various signals using a plurality of LF transmission antennas 4 a and RF reception antennas 4 b arranged in the vehicle C, and communicates with the portable device 3. Communicate. The body ECU 1 communicates with the portable device 3 to identify the location of the portable device 3 and controls the locking or unlocking of the vehicle door of the vehicle C according to the identified location of the portable device 3. In addition, the body ECU 1 is connected to the interior lamp 2 and controls lighting or extinguishing of the interior lamp 2 according to a user's operation or the location of the portable device 3. The body ECU 1 corresponds to the in-vehicle device in the first embodiment.
The plurality of LF transmission antennas 4a are provided, for example, at four locations of the front portion of the vehicle C, the back door, the driver side pillar, and the passenger side pillar, and each LF transmission antenna 4a has an LF (Low Frequency) band. The signal is transmitted using the radio wave. The LF band is an example of a radio wave band for transmitting signals, and is not necessarily limited to this.

FIG. 2 is a block diagram showing the configuration of the body ECU 1. The body ECU 1 includes a control unit 11, a storage unit 12, a temporary storage unit 13, a communication IF 14, and an input / output unit 15, and each unit is connected via a bus. The control unit 11 includes, for example, one or more CPUs (Central Processing Unit), a multi-core CPU, and the like. The control unit 11 reads a control program described later stored in the storage unit 12 and controls each unit.

The storage unit 12 includes a nonvolatile memory such as an EEPROM (Electrically-Erasable-and Programmable-ROM), a flash memory, and an HDD (Hard Disk Drive). The storage unit 12 stores a control program. The control program is a computer program in which the processing content when the control unit 11 communicates with the portable device 3 and the processing content when each unit is controlled are described.

The temporary storage unit 13 is configured by a memory such as SRAM (Static RAM) or DRAM (Dynamic RAM). The temporary storage unit 13 temporarily stores various data generated by the control unit 11 performing processing based on the control program.

The communication device 4 is connected to the communication IF 14. The control unit 11 exchanges information with the communication device 4 via the communication IF 14.

The communication device 4 is mounted on the vehicle C and includes a transmission unit 41 and a reception unit 42. The transmission unit 41 is connected to the plurality of LF transmission antennas 4 a described above, and transmits a position specifying signal for specifying the location of the portable device 3. The position specifying signal is, for example, a signal for causing the portable device 3 to detect the received signal strength. The transmission unit 41 transmits various signals including the position specifying signal from the LF transmission antenna 4a according to the control of the control unit 11 of the body ECU 1. The receiving unit 42 is connected to the RF receiving antenna 4b, receives various signals transmitted from the portable device 3 using radio waves in the UHF (Ultra High Frequency) band, and receives the received signals as a control unit of the body ECU 1 11 to output. Here, since the area in which communication can be performed using radio waves in the UHF band is wide, the arrangement of the RF receiving antenna 4b in the vehicle C is not particularly limited.
The communication device 4 corresponds to the communication unit in the first embodiment. The body ECU 1 may be configured to perform wireless communication with the portable device 3, and a configuration corresponding to the communication device 4 may be integrally provided.

The input / output unit 15 is connected to the interior lamp 2, the illumination switch 5, the request switch 6, and the door lock mechanism 7.

The interior lamp 2 is illumination provided in the passenger compartment, for example, illumination provided in the ceiling in front of the passenger compartment, illumination provided in the ceiling in the center of the passenger compartment, and inside each vehicle door, Illumination to illuminate the feet. The interior lamp 2 is turned on or off according to the control of the control unit 11.

The illumination switch 5 is, for example, a push-type switch provided in the passenger compartment. The lighting switch 5 outputs a signal indicating ON to the control unit 11 when an operation related to ON is received from the user, and outputs a signal indicating OFF to the control unit 11 when receiving an operation related to OFF from the user. Output. The control unit 11 performs control to turn on the interior lamp 2 when a signal indicating ON is input from the illumination switch 5, and controls to turn off the interior lamp 2 when a signal indicating OFF is input from the illumination switch 5. I do.

The request switch 6 is provided on the outer surface of each vehicle door, and includes, for example, a push-down switch for locking or unlocking the provided door, a contact sensor for detecting contact of the user's hand with the door handle, and the like. Has been. When the request switch 6 is operated by the user, the request switch 6 outputs a signal indicating the operation to the control unit 11. For example, the control unit 11 controls the locking or unlocking of the vehicle door according to the signal input from the request switch 6 and the state of the door lock mechanism 7. Each request switch 6 may have a separate configuration for locking the provided door and a configuration for unlocking.

The door lock mechanism 7 is provided around each vehicle door of the vehicle C. The door lock mechanism 7 includes a mechanical mechanism for locking and unlocking the door, and an actuator for electrically operating the mechanical mechanism. The door lock mechanism 7 operates a mechanical mechanism by an actuator operation according to an instruction from the control unit 11 to lock or unlock the vehicle door.

FIG. 3 is a block diagram showing the configuration of the portable device 3. The portable device 3 includes a control unit 31, a storage unit 32, a temporary storage unit 33, a transmission unit 34, and a reception unit 35, and each unit is connected via a bus. The control unit 31 includes, for example, one or a plurality of CPUs, a multi-core CPU, and the like. The control unit 31 reads out a control program described later stored in the storage unit 32 and controls each unit.

The storage unit 32 includes a nonvolatile memory such as an EEPROM or a flash memory. The storage unit 32 stores a control program. The control program is a computer program in which the processing content when the control unit 31 communicates with the body ECU 1 and the processing content when controlling each unit are described.

The temporary storage unit 33 is configured by a memory such as SRAM or DRAM. The temporary storage unit 33 temporarily stores various data generated by the control unit 31 performing processing based on the control program.

The transmission unit 34 is connected to the RF transmission antenna 3a, and transmits a response signal corresponding to the position specifying signal transmitted from the body ECU 1 under the control of the control unit 31. The transmitter 34 transmits a response signal using UHF radio waves. The UHF band is an example of a radio wave band for transmitting signals, and is not necessarily limited to this.

The receiving unit 35 is connected to the LF receiving antenna 3b via the received signal strength detecting unit 36, receives various signals transmitted from the body ECU 1 using radio waves in the LF band, and outputs them to the control unit 31. The LF receiving antenna 3b is, for example, a triaxial antenna, and can detect the received signal strength regardless of the orientation or posture of the portable device 3 with respect to the vehicle C. The received signal strength detector 36 is, for example, a circuit that detects the received signal strength of the position specifying signal received by the LF receiving antenna 3 b and outputs the detected received signal strength to the controller 31.

In the interior light control system configured as described above, the body ECU 1 transmits the position specifying signal and receives the response signal with respect to the position specifying signal with the portable device 3, thereby locating the portable device 3. Identify the location. Specifically, the body ECU 1 instructs the communication device 4 to sequentially transmit position specifying signals having substantially the same intensity from the plurality of LF transmission antennas 4a. The portable device 3 detects the reception signal strength of the position specifying signal transmitted from each of the plurality of LF transmission antennas 4a by the reception signal strength detection unit 36, and transmits a response signal including the detected reception signal strength to the transmission unit 34. Send from. Thereafter, when the communication device 4 receives the response signal and outputs the received response signal to the body ECU 1, the body ECU 1 specifies the location of the portable device 3 based on the received signal strength included in the response signal. The received signal strength included in the response signal corresponds to the distance between the corresponding LF transmission antenna 4 a and the portable device 3. Therefore, the body ECU 1 can specify the positional relationship between each LF transmission antenna 4a and the portable device 3, that is, the location of the portable device 3, based on the received signal strength included in the response signal.

Also, the body ECU 1 turns off the interior lamp 2 that is turned on according to the location of the portable device 3 specified as described above. The location of the portable device 3 when the body ECU 1 turns off the lit interior lamp 2 will be described.

FIG. 4 is an explanatory diagram for explaining the location of the portable device 3 when the interior lamp 2 whose body ECU 1 is lit is turned off. FIG. 4 shows a region R1 and a region R2 related to the determination of the location of the portable device 3. The region R <b> 1 is a three-dimensional virtual region and has a boundary surface with a size that covers the passenger compartment of the vehicle C. That is, the outside of the region R1 represents the outside of the passenger compartment of the vehicle C. The region R2 is a three-dimensional virtual region, and has a boundary at which a signal transmitted from the LF transmission antenna 4a is reachable.

The body ECU 1 according to the first embodiment identifies that the location of the portable device 3 is outside the region R1 and within the region R2, that is, within the hatching region in FIG. 4, and further detects the locking of the vehicle door of the vehicle C. In this case, the lit interior lamp 2 is turned off. By performing such control, the body ECU 1 turns off the interior lamp 2 that is lit when, for example, the user who owns the portable device 3 gets off the vehicle C and leaves without getting on the vehicle C again. can do.

Moreover, even if it is a case where it has specified that it is in the hatching area | region in FIG. 4, when the body ECU1 has not detected locking of the vehicle door of the vehicle C, it will turn off the lighted interior lamp 2 do not do. The body ECU 1 is turned on by performing such control, for example, even if the user who owns the portable device 3 gets off the vehicle C, there is a possibility that the user will get on the vehicle C again. It is possible to prevent the interior light 2 from being turned off.

Further, when the body ECU 1 specifies that the location of the portable device 3 is within the region R1, the body ECU 1 does not perform control to turn off the lit interior lamp 2. By performing such control, the body ECU 1 is configured not to turn off the lit interior lamp 2 when, for example, a user possessed by the portable device 3 is located in the passenger compartment of the vehicle C. it can.

Furthermore, when the body ECU 1 transmits the position specifying signal from the LF transmitting antenna 4a and specifies that the location of the portable device 3 is outside the region R2, the interior ECU 2 that is lit is immediately turned off. Take control. By performing such control, the body ECU 1 can immediately turn off the interior lamp 2 that is turned on when the user who owns the portable device 3 is not located near the vehicle C.

Next, a processing procedure when the body ECU 1 performs the above control will be described. FIG. 5 is a flowchart showing a processing procedure of the body ECU 1 when the lit interior lamp 2 is turned off according to the location of the portable device 3. The body ECU 1 determines whether or not the interior lamp 2 is lit (step S11). For example, based on the lighting signal input from the lighting switch 5, the control unit 11 determines whether or not the control unit 11 has controlled the lighting of the interior lamp 2. The control unit 11 detects a voltage or current between the interior lamp 2 and a power source (not shown), and determines whether the interior lamp 2 is turned on according to the detected voltage or current value. It may be determined whether the interior lamp 2 is turned on by a method. When it is determined that the interior lamp 2 is not turned on, that is, is turned off (S11: NO), the control unit 11 waits for processing until the interior lamp 2 is turned on.

If it is determined that the interior lamp 2 is lit (S11: YES), the control unit 11 instructs the communication device 4 to transmit a position specifying signal from the LF transmission antenna 4a (step S12). For example, the control unit 11 outputs to the communication device 4 an instruction for sequentially transmitting position specifying signals having substantially the same intensity from the plurality of LF transmission antennas 4a.

The control unit 11 of the body ECU 1 determines whether or not the communication device 4 has received a response signal from the portable device 3 for the transmitted position specifying signal within a predetermined period (step S13). For example, the control unit 11 determines whether or not a response signal has been received during a period until a predetermined time elapses after the process of step S12. The predetermined period is, for example, several milliseconds. When it determines with having received the response signal (S13: YES), the control part 11 pinpoints the location position of the portable device 3 based on the received response signal (step S14). The control unit 11 specifies the location of the portable device 3 based on the received signal strength included in the response signal received as described above. The control unit 11 functions as the specifying unit in the first embodiment by executing the control program in step 14.

Next, the control unit 11 determines whether or not the specified location of the portable device 3 is outside the passenger compartment (step S15). When it is determined that the location is not outside the vehicle compartment, that is, the vehicle is located inside the vehicle compartment (S15: NO), the control unit 11 returns the process to step S12 without turning off the vehicle interior light 2.

If it is determined that the location is outside the passenger compartment (S15: YES), the control unit 11 determines whether or not locking has been detected (step S16). For example, the control unit 11 determines whether or not the communication device 4 has received a signal related to locking from the portable device 3 and whether or not the communication device 4 has output an instruction to lock the vehicle door to the door lock mechanism 7. The control part 11 functions as a locking detection part in Embodiment 1 by executing a control program in step S16. When it determines with locking not being detected (S16: NO), the control part 11 returns a process to step S12.

If it is determined that locking has been detected (S16: YES), the control unit 11 turns off the interior lamp 2 (step S17), and then ends the process.

On the other hand, when it is determined in step S13 that the response signal has not been received (S13: NO), the control unit 11 determines whether or not the reception of the response signal for the transmission of the position specifying signal has failed for a predetermined number of times. Determination is made (step S18). For example, whenever the control unit 11 determines that the response signal is not received in step S13, the control unit 11 counts up the number of times the reception of the response signal has failed, and when it is determined in step S13 that the response signal has been received, Configured to reset. For example, the control unit 11 determines in step S18 by referring to the number of times counted up. If it is determined that the predetermined number of times has not failed (S18: NO), the control unit 11 returns the process to step S12.

When it is determined that the predetermined number of times has failed (S18: YES), the control unit 11 specifies that the location of the portable device 3 is outside the communication range of the communication device 4, and the control unit 11 turns off the interior lamp 2 (step) S17). The control unit 11 functions as the specifying unit in the first embodiment by executing the control program in step S18. Thereafter, the control unit 11 finishes the process.

With the above configuration and processing, the body ECU 1 can turn off the interior lamp 2 when the user gets out of the vehicle C and leaves the vehicle C without getting in again. Can be reduced. In addition, for example, when the user gets out of the vehicle C and then gets into the vehicle C shortly after the user gets out of the vehicle C, the interior lamp 2 that is lit can be prevented from being turned off. Can be held.

Further, the body ECU 1 can prevent the interior light 2 unintended by the user from being turned off by not turning off the interior light 2 that is turned on when the user who owns the portable device 3 is located in the vehicle interior. A decrease in convenience can be prevented.

Further, when the portable device 3 is located outside the communication range of the communication device 4, the body ECU 1 is located at a position sufficiently away from the vehicle C so that the user who owns the portable device 3 is in the vehicle C again. It is possible to immediately turn off the interior lamp 2 on the assumption that no entry is made. Therefore, the body ECU 1 can further reduce unnecessary lighting of the interior lamp 2.

In addition, the body ECU 1 repeatedly transmits a position specifying signal so that the position of the portable device 3 can be maintained even when the user who owns the portable device 3 moves inside or outside the vehicle C. Accordingly, the interior lamp 2 that is lit can be turned off flexibly.

Furthermore, the body ECU 1 can improve the accuracy of specifying the location of the portable device 3 by identifying the location of the portable device 3 based on, for example, the received signal strength of the response signal to the position specifying signal.

(Modification)
The body ECU 1 according to the first embodiment turns off the interior lamp 2 that is turned on when the portable device 3 is located in the hatching area shown in FIG. 4 and when the locking of the vehicle door of the vehicle C is detected. Although described, the hatching area may be set as appropriate. In the modification, an example in which the body ECU 1 performs control to turn off the interior lamp 2 that is turned on in a hatching area different from that in the first embodiment will be described. Other configurations and operational effects other than those described below are the same as those in the first embodiment, and corresponding portions are denoted by the same reference numerals and detailed description thereof is omitted.

FIG. 6 is an explanatory diagram for explaining the location of the portable device 3 when the interior lamp 2 in which the body ECU 1 is turned on in the modified example is turned off. FIG. 6 shows a region R3. The region R3 is a three-dimensional virtual region that includes the entire vehicle C and is smaller than the region R2.

The body ECU 1 of the modified example specifies that the location of the portable device 3 is outside the region R1 and within the region R3, that is, within the hatching region in FIG. 6, and further detects the locking of the vehicle door of the vehicle C The interior light 2 that is lit is turned off. Even if the location of the portable device 3 is within the hatching area, the lit interior lamp 2 is not extinguished if the locking of the vehicle door is not detected.
Further, when the body ECU 1 of the modification specifies that the location of the portable device 3 is outside the region R3, the interior lamp 2 is turned off.

Next, the processing procedure of the modified body ECU 1 will be described. FIG. 7 is a flowchart showing a processing procedure of the body ECU 1 when the lit interior lamp 2 is turned off according to the location of the portable device 3. Note that the processing in steps S21 to S25 and steps S27 to S29 in FIG. 7 is the same as the processing in steps S11 to S15 and steps S16 to S28 in FIG.

When it is determined that the portable device 3 is located outside the vehicle compartment (S25: YES), the control unit 11 of the body ECU 1 determines whether or not the specified location of the portable device 3 is within a predetermined region ( Step S26). The predetermined region is, for example, a hatched region in FIG. 6, that is, a region outside the region R1 and within the region R3. When it determines with it being in a predetermined area (S26: YES), the control part 11 advances a process to step S27, and is not in a predetermined area, ie, the location of the portable device 3 is outside area | region R3 and within area | region R2. If there is (S26: NO), the control unit 11 advances the process to step S28.

With the above configuration and processing, the body ECU 1 can turn off the interior lamp 2 when it is specified that the location of the portable device 3 is outside the region R3 that is smaller than the region R2. Thus, unnecessary lighting of the interior lamp 2 can be further reduced.

Note that the body ECU 1 in the first embodiment and the modified example has the vehicle speed of the vehicle C set to the predetermined speed when the illumination switch 5 is operated even when the location of the portable device 3 is specified to be in the vehicle interior. The interior lamp 2 that is turned on when a predetermined condition such as the above is satisfied may be turned off.

(Embodiment 2)
The body ECU 1 of the first embodiment and the modified example is lit when the portable device 3 is located in the hatching area outside the vehicle compartment shown in FIGS. 4 and 6 and when the locking of the vehicle door of the vehicle C is detected. It explained that the interior light 2 was turned off. An example in which the body ECU 1 according to the second embodiment controls the turning-off of the interior lamp 2 that is turned on according to the location of the portable device 3 outside the passenger compartment, regardless of whether or not the locking of the vehicle door of the vehicle C is detected. Will be explained. In addition, since other structures and operational effects other than those described below are the same as those of the modified example, the corresponding portions are denoted by the same reference numerals and detailed description thereof is omitted.

The body ECU 1 according to the second embodiment turns off the interior lamp 2 that is lit when the portable device 3 is located in the hatching area shown in FIG. 6, that is, outside the area R1 and within the area R3. First, the interior lamp 2 is turned off when the portable device 3 is located outside the hatching area. The processing procedure will be described below.

FIG. 8 is a flowchart showing a processing procedure when the body ECU 1 according to the second embodiment turns off the lit interior lamp 2 according to the location of the portable device 3. Note that the processing in steps S31 to S35, step S37, and step S38 in FIG. 8 is the same as the processing in steps S21 to S25, step S28, and step S29 in FIG.

When it is determined that the portable device 3 is located outside the vehicle compartment (S35: YES), the control unit 11 of the body ECU 1 determines whether or not the specified location of the portable device 3 is within a predetermined region ( Step S36). The predetermined area is, for example, a hatched area in FIG. When it determines with it being in a predetermined area (S36: YES), the control part 11 does not extinguish the interior lamp 2 currently turned on, and returns a process to step S32. When outside the predetermined area, that is, when the location of the portable device 3 is outside the area R3 and within the area R2 (S36: NO), the control unit 11 turns off the lit interior lamp 2 (step S37), and performs the process. Finish.

Even if it is a case where locking of the vehicle door of the vehicle C is not detected by the above structure and process, the effect similar to Embodiment 1 and a modification can be acquired.

1 Body ECU
DESCRIPTION OF SYMBOLS 2 Car interior light 3 Portable machine 3a RF transmission antenna 3b LF reception antenna 4 Communication apparatus 4a LF transmission antenna 4b RF reception antenna 5 Illumination switch 6 Request switch 7 Door lock mechanism 11 Control part 12 Storage part 13 Temporary storage part 14 Communication IF
DESCRIPTION OF SYMBOLS 15 Input / output part 31 Control part 32 Storage part 33 Temporary storage part 34 Transmission part 35 Reception part 36 Reception signal strength detection part 41 Transmission part 42 Reception part C Vehicle R1, R2, R3 area | region

Claims

It is an in-vehicle device that controls the turning off of the interior light that is lit,
A locking detection unit for detecting that the vehicle door is locked;
A communication unit for wireless communication with a portable device;
Based on wireless communication by the communication unit, a specifying unit for specifying the location of the portable device;
An in-vehicle device comprising: a control unit that turns off the interior lamp when the specifying unit specifies that the portable device is located outside a vehicle compartment and the locking detection unit detects locking of the vehicle door.
It is an in-vehicle device that controls the turning off of the interior light that is lit,
A communication unit for wireless communication with a portable device;
Based on wireless communication by the communication unit, a specifying unit for specifying the location of the portable device;
When the specifying unit specifies that the portable device is located outside a predetermined area outside the passenger compartment, the lights are turned off, and the specifying unit specifies that the portable device is located within the predetermined area And a control unit configured to prevent the interior light from being turned off.
The in-vehicle device according to claim 1, wherein the control unit is configured not to turn off the interior lamp when the specifying unit specifies that the portable device is located in a vehicle interior.
The control unit is configured to immediately turn off the interior lamp when the specifying unit specifies that the portable device is located outside the communication range of the communication unit. The in-vehicle device described in 1.
The specifying unit repeatedly specifies the location of the portable device,
The in-vehicle device according to any one of claims 1 to 4, wherein the control unit performs control according to the specified location every time the specifying unit specifies the location of the portable device. .
The communication unit transmits a position specifying signal to the portable device, and receives a response signal corresponding to the position specifying signal from the portable device,
The in-vehicle device according to any one of claims 1 to 5, wherein the specifying unit is configured to specify a location of the portable device based on a response signal received by the communication unit.
An in-vehicle device having a communication unit that transmits a position specifying signal; and a portable device that receives the position specifying signal and transmits a response signal corresponding to the received position specifying signal. The vehicle interior light control system that receives the response signal transmitted from the portable device at the communication unit, and controls the turning off of the interior light that is turned on based on the received response signal,
The in-vehicle device is
A locking detection unit for detecting that the vehicle door is locked;
Based on the response signal received by the communication unit, a specifying unit that specifies the position of the portable device,
An interior light control system comprising: a control unit that turns off the interior light when the identifying unit identifies that the portable device is located outside a passenger compartment and the locking detection unit detects locking of a vehicle door.
An in-vehicle device having a communication unit that transmits a position specifying signal; and a portable device that receives the position specifying signal and transmits a response signal corresponding to the received position specifying signal. The vehicle interior light control system that receives the response signal transmitted from the portable device at the communication unit, and controls the turning off of the interior light that is turned on based on the received response signal,
The in-vehicle device is
Based on the response signal received by the communication unit, a specifying unit that specifies the position of the portable device,
When the specifying unit specifies that the portable device is located outside a predetermined area outside the passenger compartment, the lights are turned off, and the specifying unit specifies that the portable device is located within the predetermined area An interior light control system comprising: a control unit configured not to turn off the interior light.