WO2015129804A1

WO2015129804A1 - System for selecting communication partner, and body-side communicator

Info

Publication number: WO2015129804A1
Application number: PCT/JP2015/055602
Authority: WO
Inventors: 博行蔵田
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: 2014-02-28
Filing date: 2015-02-26
Publication date: 2015-09-03
Also published as: JP2015160609A

Abstract

　Provided are a system for selecting a communication partner and a body-side communicator in which a keyless entry system and a TPMS are switched with appropriate timing, and a wireless communicator mounted in a vehicle can be shared by both systems. An ECU (1) makes a determination that appropriately combines four conditions, the conditions including the operating state of a shift lever (22), the engaged/released state of a parking brake (23), the active state of the engine of the vehicle (100), and the result of an authentication process performed together with the wireless key (3), whereby the ECU (1) selects whether a wireless communication unit (12) communicates wirelessly with the wireless key (3) or a sensor unit (6). For example, when either the shift lever (22) is in a parking state or the engine is not active, the ECU (1) conducts wireless communication with the wireless key (3) for the keyless entry system, and when the shift lever (22) is not in a parking state and the engine is active, the ECU (1) conducts wireless communication with the sensor unit (6) for the TPMS.

Description

Communication partner selection system and vehicle body side communication device

The present invention relates to a communication partner selection system and a vehicle body side communication device used for keyless entry of a vehicle and TPMS (Tire Pressure Monitoring System).

Conventionally, a keyless entry system or a smart entry system has been widely used as a system that supports locking / unlocking of a vehicle door. In such a system, a portable communication device possessed by a user and a communication device mounted on a vehicle communicate with each other to exchange information, and control of locking / unlocking the door of the vehicle when authentication processing is successful. Is done automatically.

In recent years, there is TPMS that monitors the tire pressure of a vehicle and issues a warning to the user. For example, in Patent Document 1, a tire pressure sensor device provided on a tire measures a wheel angle at two different times, and transmits the difference between the angles to an electronic control module provided on a vehicle body. TPMS automatic wheel positioning system that measures the angle of the wheel with an ABS (Antilock Brake System) sensor and determines the tire mounting position based on the wheel angle received from the sensor device and the wheel angle measured by the ABS sensor Is described.

Special table 2013-505167 gazette

As described above, both the keyless entry system and the TPMS need to exchange information with a control device mounted on the vehicle by wireless communication, and the vehicle needs to be equipped with a device that performs wireless communication. When the keyless entry system and the TPMS are individually mounted on the vehicle, the vehicle needs to be equipped with a wireless communication device for both systems. Thus, the keyless entry system and the TPMS can share the wireless communication device of the vehicle, so that downsizing and cost reduction of the device can be expected. However, since the wireless communication device is shared, the keyless entry system and the TPMS cannot be operated at the same time, so it is necessary to switch the system at an appropriate timing.

The present invention has been made in view of such circumstances, and an object of the present invention is to switch between a keyless entry system and a TPMS at an appropriate timing, and a wireless communication device mounted on a vehicle in both systems. It is to provide a communication partner selection system and a vehicle body side communication device that can share the same.

A communication partner selection system according to the present invention is provided on a wheel of a vehicle, and includes an air pressure detecting means for detecting an air pressure of a tire, and a wheel side communicator having an air pressure transmitting means for wirelessly transmitting a detection result of the air pressure detecting means. A communication means mounted on the vehicle body of the vehicle for performing wireless communication with the portable communication device or the wheel side communication device, and the vehicle door based on a result of communication with the portable communication device performed by the communication means. Lock control means for performing locking / unlocking control of the vehicle, shift state acquisition means for acquiring the operation state of the shift lever of the vehicle, engine operation state acquisition means for acquiring the operation state of the engine of the vehicle, and acquisition of the shift state Depending on the operation state acquired by the means and the operation state acquired by the engine operation state acquisition means, the communication means is either the portable communication device or the wheel side communication device. Characterized in that it comprises a vehicle body-side communication device having a selection means for selecting whether to wirelessly communicate with.

Further, the communication partner selection system according to the present invention is such that the selection means allows the communication partner of the communication means to communicate with the communication partner when the operation state of the shift lever is parking or the engine is not operating. A portable communication device is selected, and when the operation state of the shift lever is other than parking and the engine is operating, the wheel side communication device is selected as a communication partner of the communication means. It is characterized by that.

In the communication partner selection system according to the present invention, the vehicle body side communication device performs authentication processing with the portable communication device, and storage means for storing the result of the authentication processing by the authentication device. And the selection means selects based on the operation state acquired by the shift state acquisition means, the operation state acquired by the engine operation state acquisition means, and the result of the authentication process stored in the storage means It is characterized by carrying out.

In addition, the communication partner selection system according to the present invention is a wheel-side communication that is provided on a wheel of a vehicle and includes air pressure detecting means for detecting tire air pressure and air pressure transmitting means for wirelessly transmitting a detection result of the air pressure detecting means. And the communication means mounted on the vehicle body of the vehicle and performing wireless communication with the portable communication device or the wheel-side communication device, and the vehicle based on the result of communication between the portable communication device and the portable communication device. Lock control means for performing locking / unlocking control of the door, shift state acquisition means for acquiring the operation state of the shift lever of the vehicle, authentication means for performing authentication processing with the portable communication device, and by the authentication means Storage means for storing the result of the authentication process, and the communication means according to the operation state acquired by the shift state acquisition means and the result of the authentication process stored in the storage means. Characterized in that it comprises a vehicle body-side communication device having a selection means for selecting one and whether to perform wireless communication of the communication unit or the wheel-side communication device.

Further, the communication partner selection system according to the present invention is such that the selection unit communicates with the communication unit when the operation state of the shift lever is parking or the result of the authentication process is not successful. If the operation state of the shift lever is other than parking and the result of the authentication process is successful, the wheel side communicator is set as the communication partner of the communication means. It is characterized by being selected.

Further, in the communication partner selection system according to the present invention, the vehicle body side communicator has a parking brake state acquisition means for acquiring an operation / release state of the parking brake of the vehicle, and the selection means further includes the parking brake. The selection is performed according to the operation / release state of the parking brake acquired by the state acquisition means.

In addition, the communication partner selection system according to the present invention is a wheel-side communication that is provided on a wheel of a vehicle and includes air pressure detecting means for detecting tire air pressure, and air pressure transmitting means for wirelessly transmitting the detection result of the air pressure detecting means. And the communication means mounted on the vehicle body of the vehicle and performing wireless communication with the portable communication device or the wheel-side communication device, and the vehicle based on the result of communication between the portable communication device and the portable communication device. Lock control means for locking / unlocking the door of the vehicle, parking brake state acquisition means for acquiring the operation / release state of the parking brake of the vehicle, engine operation state acquisition means for acquiring the operation state of the engine of the vehicle, and The parking brake operation / release state acquired by the parking brake state acquisition means and the engine operation state acquisition means acquired by the parking brake state acquisition means. It said communication means in accordance with the state is characterized by comprising a vehicle body-side communication device having a selection means for selecting whether to perform any wireless communication with the portable communication device or the wheel-side communication device.

In the communication partner selection system according to the present invention, when the parking brake is in an operating state or the engine is not operating, the selection unit communicates the portable communication with the communication partner of the communication unit. When the parking brake is in a released state and the engine is operating, the wheel side communicator is selected as a communication partner of the communication means. .

In the communication partner selection system according to the present invention, the vehicle body side communication device performs authentication processing with the portable communication device, and storage means for storing the result of the authentication processing by the authentication device. The selection means includes an operation / release state of the parking brake acquired by the parking brake state acquisition means, an operation state acquired by the engine operation state acquisition means, and an authentication stored in the storage means The selection is made based on the processing result.

In addition, the communication partner selection system according to the present invention is a wheel-side communication that is provided on a wheel of a vehicle and includes air pressure detecting means for detecting tire air pressure, and air pressure transmitting means for wirelessly transmitting the detection result of the air pressure detecting means. And the communication means mounted on the vehicle body of the vehicle and performing wireless communication with the portable communication device or the wheel-side communication device, and the vehicle based on the result of communication between the portable communication device and the portable communication device. Lock control means for performing locking / unlocking control of the door, parking brake state acquisition means for acquiring the operation / release state of the parking brake of the vehicle, authentication means for performing authentication processing with the portable communication device, A storage unit for storing a result of the authentication process by the authentication unit, an operation / release state of the parking brake acquired by the parking brake state acquisition unit, and the description; A vehicle body side communicator having selecting means for selecting whether the communication means performs wireless communication with the portable communicator or the wheel side communicator according to the result of the authentication process stored in the means. It is characterized by that.

In addition, the communication partner selection system according to the present invention is configured so that the selection unit is configured to notify the communication partner of the communication unit when the parking brake is in an operating state or when the result of the authentication process is not successful. When a portable communicator is selected, the parking brake is in a released state, and the result of the authentication process is authentication success, the wheel communicator is selected as a communication partner of the communication means. It is characterized by being.

Further, a vehicle body side communication device according to the present invention is a wheel side communication device having an air pressure detection means for detecting a tire air pressure provided on a wheel of a vehicle, and an air pressure transmission means for wirelessly transmitting a detection result of the air pressure detection means, Or communication means for performing wireless communication with the portable communication device, and lock control means for performing locking / unlocking control of the door of the vehicle based on a result of communication with the portable communication device performed by the communication means; Shift state acquisition means for acquiring the operation state of the shift lever of the vehicle, Engine operation state acquisition means for acquiring the operation state of the engine of the vehicle, Operation state acquired by the shift state acquisition means, and the engine operation state Selecting means for selecting whether the communication means performs wireless communication with the portable communicator or the wheel side communicator according to the operation state obtained by the obtaining means; Characterized in that it is mounted on the body of the serial vehicle.

Further, a vehicle body side communication device according to the present invention is a wheel side communication device having an air pressure detection means for detecting a tire air pressure provided on a wheel of a vehicle, and an air pressure transmission means for wirelessly transmitting a detection result of the air pressure detection means, Or communication means for performing wireless communication with the portable communication device, and lock control means for performing locking / unlocking control of the door of the vehicle based on a result of communication with the portable communication device performed by the communication means; A shift state acquisition unit that acquires an operation state of the shift lever of the vehicle, an authentication unit that performs an authentication process with the portable communication device, and a storage unit that stores a result of the authentication process performed by the authentication unit; The communication means performs wireless communication with either the portable communication device or the wheel side communication device in accordance with the operation state acquired by the shift state acquisition device and the result of the authentication process stored in the storage device. And a selection means for selecting, characterized in that it is mounted on the body of the vehicle.

Further, a vehicle body side communication device according to the present invention is a wheel side communication device having an air pressure detection means for detecting a tire air pressure provided on a wheel of a vehicle, and an air pressure transmission means for wirelessly transmitting a detection result of the air pressure detection means, Or communication means for performing wireless communication with the portable communication device, and lock control means for performing locking / unlocking control of the door of the vehicle based on a result of communication with the portable communication device performed by the communication means; A parking brake state acquisition means for acquiring an operation / release state of the parking brake of the vehicle, an engine operation state acquisition means for acquiring an operation state of the engine of the vehicle, and the parking brake acquired by the parking brake state acquisition means. Depending on the operation / release state of the engine and the operation state acquired by the engine operation state acquisition unit, the communication unit may be the portable communication device or the And selecting means for selecting whether to perform any wireless communication with wheel-side communication device, characterized in that it is mounted on the body of the vehicle.

Further, a vehicle body side communication device according to the present invention is a wheel side communication device having an air pressure detection means for detecting a tire air pressure provided on a wheel of a vehicle, and an air pressure transmission means for wirelessly transmitting a detection result of the air pressure detection means, Or communication means for performing wireless communication with the portable communication device, and lock control means for performing locking / unlocking control of the door of the vehicle based on a result of communication with the portable communication device performed by the communication means; A parking brake state acquisition unit that acquires an operation / release state of the parking brake of the vehicle, an authentication unit that performs an authentication process with the portable communication device, and a memory that stores a result of the authentication process by the authentication unit And the communication brake according to the activation / release state of the parking brake acquired by the parking brake state acquisition unit and the result of the authentication process stored in the storage unit. Stage and selecting means for selecting whether to perform any wireless communication with the portable communication device or the wheel-side communication device, characterized in that it is mounted on the body of the vehicle.

In the present invention, a portable communicator for a keyless entry system and a wheel side communicator provided on a wheel for TPMS perform wireless communication with a car body side communicator provided on a vehicle body. Do. The vehicle body side communication device performs locking / unlocking control of the door of the vehicle through communication with the portable communication device. The vehicle body side communicator can acquire a result of detection of the air pressure of the wheel by communication with the wheel side communicator and can give a warning or the like. In addition, the vehicle body side communication device can perform either one of wireless communication with the portable communication device or wireless communication with the wheel side communication device, and performs control to select which counterpart wireless communication is performed. .

In the selection control of the wireless communication partner, the vehicle body side communication device performs determination by appropriately combining the following four conditions.
・ Whether the shift lever is in the parking state.
• Is the parking brake on (actuated) or off (released)?
-Whether the engine is running.
・ Whether authentication processing with the portable communication device is successful.

For example, the vehicle body-side communicator selects a partner for wireless communication according to the operation state of the shift lever and the operation of the engine. In this case, the vehicle body side communication device may select the portable communication device as a wireless communication partner when the operation state of the shift lever is parking or the engine is not operating. The vehicle body side communication device may select the wheel side communication device as a wireless communication partner when the shift lever operation state is other than parking and the engine is operating.

For example, the vehicle body-side communicator selects a wireless communication partner according to the operation state of the shift lever and the result of the authentication process. In this case, the vehicle body-side communication device may select the portable communication device as a wireless communication partner when the operation state of the shift lever is parking or the result of the authentication processing is not successful. The vehicle body side communication device may select the wheel side communication device as a wireless communication partner when the shift lever operation state is other than parking and the authentication processing result is authentication success.

For example, the vehicle body side communicator selects a partner for wireless communication according to the on / off state of the parking brake and the operation of the engine. In this case, the vehicle body-side communication device may select the portable communication device as a wireless communication partner when the parking brake is on or the engine is not operating. Further, the vehicle body side communication device may select the wheel side communication device as a wireless communication partner when the parking brake is off and the engine is operating.

For example, the vehicle body-side communicator selects a wireless communication partner according to the on / off state of the parking brake and the result of the authentication process. In this case, the vehicle body-side communication device may select the portable communication device as a wireless communication partner when the parking brake is on or the result of the authentication processing is not successful. Further, the vehicle body side communication device may select the wheel side communication device as a wireless communication partner when the parking brake is in an off state and the result of the authentication processing is successful.

Note that these selection methods are examples. The vehicle body-side communicator may perform determination by appropriately combining the above four conditions, and select a wireless communication partner according to the determination result. For example, the vehicle body side communication device may make a selection by determining three conditions out of the above four conditions, or may make a selection by determining the four conditions.

By making a determination as described above and selecting a wireless communication partner, the vehicle body-side communicator can switch the communication partner according to whether or not the vehicle is in a traveling state (or a travelable state). it can. When the vehicle is running, there is no need to perform door locking / unlocking control by the keyless entry system, so the vehicle body side communicator performs wireless communication with the wheel side communicator for TPMS. Further, when the vehicle is not in a running state, the vehicle body side communication device performs wireless communication with the portable communication device of the keyless entry system. As a result, a communication partner for wireless communication can be selected at an appropriate timing, and system switching at an appropriate timing can be realized. In addition, since the above condition determination can be realized without adding special hardware or the like in an existing vehicle, accurate selection control of a wireless communication partner can be realized at low cost.

In the case of the present invention, the keyless entry system is based on the determination of appropriately combining conditions such as the operation state of the vehicle shift lever, the operation state of the parking brake, the operation state of the engine, and the authentication processing result with the portable communication device. By selecting either a portable communicator or a wheel-side communicator of TPMS to perform wireless communication, the keyless entry system and TPMS can be switched at an appropriate timing. The wireless communication function of the communication device can be shared.

It is a block diagram which shows the structure of the communicating party selection system which concerns on this Embodiment. It is a block diagram which shows the structure of ECU which concerns on this Embodiment. It is a block diagram which shows the structure of the wireless key which concerns on this Embodiment. It is a block diagram which shows the structure of the sensor unit which concerns on this Embodiment. It is a flowchart which shows the procedure of the communication partner selection process which ECU which concerns on this Embodiment performs. It is a flowchart which shows the procedure of the process regarding the keyless entry system which ECU which concerns on this Embodiment performs. It is a flowchart which shows the procedure of the process regarding TPMS which ECU which concerns on this Embodiment performs. 6 is a flowchart showing a procedure of a communication partner selection process performed by an ECU according to a second embodiment. 12 is a flowchart illustrating a procedure of a communication partner selection process performed by an ECU according to a third embodiment. 14 is a flowchart showing a procedure of a communication partner selection process performed by an ECU according to the fourth embodiment. 10 is a flowchart showing a procedure of a communication partner selection process performed by an ECU according to a fifth embodiment.

(Embodiment 1)
Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof. FIG. 1 is a block diagram showing a configuration of a communication partner selection system according to the present embodiment. In the figure, reference numeral 100 denotes a vehicle, and the vehicle 100 according to the present embodiment is equipped with four wheels (tires, wheels) on the front, rear, left and right. The communication partner selection system according to the present embodiment includes an ECU (Electronic Control Unit) 1 mounted on the vehicle body of the vehicle 100, a sensor unit 6 mounted on each wheel of the vehicle 100, an owner of the vehicle 100, and the like. It has a portable wireless key 3 that it possesses. A wheel speed sensor 5 is mounted in the vicinity of each wheel on the vehicle body of the vehicle 100, and the wheel speed detected by each wheel speed sensor 5 is notified to the ECU 1. This communication partner selection system realizes a TPMS and a keyless entry system when the ECU 1 performs wireless communication with the sensor unit 6 or the wireless key 3.

FIG. 2 is a block diagram showing a configuration of the ECU 1 according to the present embodiment. The ECU 1 includes a control unit 11, a wireless communication unit 12, a storage unit 13, an input I / F (interface) unit 14, an output I / F unit 15, and the like. The control unit 11 is configured by using an arithmetic processing device such as a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit), and by reading and executing a control program stored in the storage unit 13 or the like, the control unit 11 relates to TPMS. Arithmetic processing, arithmetic processing related to a keyless entry system, switching processing between both systems, and the like are performed.

The wireless communication unit 12 performs wireless communication with the wireless key 3 or the sensor unit 6 using an antenna 12a disposed at an appropriate position of the vehicle 100. The wireless communication unit 12 converts the wireless signal received from the wireless key 3 or the sensor unit 6 into binary information and gives it to the control unit 11, and converts the transmission information given from the control unit 11 into a wireless signal To the wireless key 3 or the sensor unit 6. In the wireless communication unit 12 according to the present embodiment, the control unit 11 selects a communication partner for wireless communication. The storage unit 13 is configured by a non-volatile memory element such as a flash memory, and stores a control program executed by the control unit 11 and various data necessary for execution. In the present embodiment, the storage unit 13 stores authentication information for performing authentication processing with the wireless key 3.

The input I / F unit 14 acquires signals input from various devices mounted on the vehicle 100 and supplies the signals to the control unit 11 as binary information. In the present embodiment, signals from the wheel speed sensor 5, the engine control device 21, the shift lever 22 and the parking brake 23 are input to the input I / F unit 14 in the ECU 1. In the present embodiment, vehicle 100 is equipped with four wheel speed sensors 5 in association with the respective wheels. The wheel speed sensor 5 detects, for example, the phase angle of the wheel and outputs an electrical signal corresponding to the phase angle. The control unit 11 of the ECU 1 samples the electrical signal input from each wheel speed sensor 5 to acquire the phase angle of each wheel, and calculates the change in the acquired phase angle, thereby rotating each wheel of the vehicle 100. The speed (wheel speed) can be acquired.

The engine control device 21 is a device that controls the operation of the engine of the vehicle 100. The engine control device 21 inputs a signal indicating the operating state of the engine to the ECU 1. The control unit 11 of the ECU 1 can determine whether or not the engine of the vehicle 100 is operating in accordance with an input signal from the engine control device 21. However, ECU1 is good also as a structure which judges the operating state of an engine indirectly, for example according to the state of the IG (ignition) switch of the vehicle 100, etc. In this configuration, the ECU 1 stores, for example, as a flag that the IG switch has been switched to a start state (a state in which the engine starter is operated), and operates the engine according to the on / off state of the flag. / Stop may be determined, and for example, the operation / stop of the engine may be determined according to the on / off state of the IG switch.

The shift lever 22 is a lever that is switched when the driver is driving, and can be switched to states such as “P (parking)”, “D (drive)”, and “N (neutral)”. The shift lever 22 inputs a signal indicating the switching state to the ECU 1. The parking brake 23 is a brake that is operated by the driver when parking, and inputs a signal indicating an on / off state of the brake to the ECU 1.

The output I / F unit 15 generates and outputs a control signal for the display device 24 or the door lock mechanism 25 based on the control information given from the control unit 11. The display device 24 may be, for example, a liquid crystal display shared with a car navigation device or the like, or may be an LED lamp for notification. The display device 24 notifies the driver of the vehicle 100 and the like according to the control of the ECU 1. The door lock mechanism 25 locks (locks) / unlocks (unlocks) each door of the vehicle 100. The door lock mechanism 25 includes a mechanical mechanism for locking / unlocking the door, an actuator for operating the mechanical mechanism, and the like. The door lock mechanism 25 locks / unlocks the door according to the control signal given from the ECU 1.

FIG. 3 is a block diagram showing a configuration of the wireless key 3 according to the present embodiment. The wireless key 3 includes a control unit 31, a wireless communication unit 32, a storage unit 33, an operation unit 34, and the like. The control unit 31 performs processing for locking / unlocking the door of the vehicle 100 by performing wireless communication with the ECU 1 of the vehicle 100 and exchanging information in accordance with an operation on the operation unit 34. The wireless communication unit 32 performs wireless communication with the ECU 1 mounted on the vehicle 100 using the antenna 32a. The radio communication unit 32 exchanges the radio signal received from the ECU 1 with binary information and gives it to the control unit 31, and also converts the transmission information given from the control unit 31 into a radio signal and sends it to the ECU 1. . The storage unit 33 is configured using a non-volatile memory element such as an EEPROM (Electrically Erasable Programmable Read Only Memory), and stores authentication information for performing an authentication process with the ECU 1. The operation unit 34 is configured by, for example, a push-type switch and the like, and is for receiving a door lock / unlock operation of the vehicle 100. The operation unit 34 notifies the control unit 31 when an operation by the user is performed.

FIG. 4 is a block diagram showing a configuration of the sensor unit 6 according to the present embodiment. The sensor unit 6 includes a control unit 61, a wireless communication unit 62, an air pressure sensor 63, a wheel speed sensor 64, and the like, and is mounted on each wheel of the vehicle 100, one by one. The control unit 61 performs processing for acquiring the wheel air pressure detected by the air pressure sensor 63 and the wheel speed detected by the wheel speed sensor 64 and transmitting the acquired wheel speed to the ECU 1 of the vehicle 100 by wireless communication. The wireless communication unit 62 performs wireless communication with the ECU 1 mounted on the vehicle 100 using the antenna 62a. The radio communication unit 62 exchanges the radio signal received from the ECU 1 with binary information and gives it to the control unit 61, and converts the transmission information given from the control unit 61 into a radio signal and sends it to the ECU 1. .

The air pressure sensor 63 is a sensor that is provided in an air valve of a wheel (tire) or the like and outputs an electric signal according to the air pressure of the wheel. The control unit 61 acquires the air pressure of the wheels by sampling the electrical signal output from the air pressure sensor 63, and transmits it to the ECU 1. The wheel speed sensor 64 outputs an electrical signal corresponding to the phase angle of the wheel. The control unit 61 samples the electrical signal output from the wheel speed sensor 64 to acquire the phase angle of the wheel, and transmits it to the ECU 1.

<TPMS>
The ECU 1 according to the present embodiment monitors the air pressure of each wheel based on information received wirelessly from the sensor unit 6 provided on each wheel of the vehicle 100, and displays an abnormality when the air pressure is abnormal. Warning by. This is a so-called TPMS function, and the ECU 1 gives a warning when the wheel air pressure is outside the allowable range based on the detection result of the air pressure sensor 63 included in the information received from the sensor unit 6.

The vehicle 100 has four wheels, but the ECU 1 issues a warning so that the user can distinguish which wheel air pressure is outside the allowable range. For this reason, the ECU 1 needs to perform processing for distinguishing which wheel the information received from the four sensor units 6 relates to. The ECU 1 according to the present embodiment includes the wheel phase angle included in the reception information from each sensor unit 6 together with the wheel air pressure, and the wheel phase angle detected by each wheel speed sensor 5 provided on the vehicle body of the vehicle 100. Based on this correlation, it is distinguished which wheel the received information from the sensor unit 6 relates to.

For example, the ECU 1 calculates the difference between the phase angle at the time t1 and the phase angle at the time t2 after a predetermined time has elapsed with respect to the wheel phase angle detected by the sensor unit 6 (or the sensor unit 6 calculates this difference). May be sent). Similarly, for the phase angle detected by the wheel speed sensor 5, the ECU 1 calculates the difference between the phase angle at time t1 and the phase angle at time t2. As a result, the ECU 1 acquires four difference values of the wheel phase angle detected by the four sensor units 6 and four difference values of the wheel phase angle detected by the four wheel speed sensors 5. be able to. The ECU 1 compares the four difference values from the sensor unit 6 with the four difference values from the wheel speed sensor 5 and determines four combinations of difference values that are closest to each other. Since the ECU 1 knows the arrangement of the wheel speed sensor 5, it can distinguish which wheel the received information of the sensor unit 6 relates to from the corresponding difference value.

In the present embodiment, a configuration for determining the mounting position of each wheel of vehicle 100 based on the phase angle of the wheel detected by sensor unit 6 and the phase angle detected by wheel speed sensor 5. However, the determination method of the wheel mounting position is not limited to this, and various other methods may be employed. Moreover, the structure which does not determine the mounting position of a wheel may be sufficient, and the sensor unit 6 may be the structure which is not provided with the wheel speed sensor 64 in this case.

<Keyless entry system>
Further, the ECU 1 according to the present embodiment performs wireless communication with the wireless key 3 and controls locking / unlocking of the door of the vehicle 100 according to the result. This is a function of a so-called keyless entry system. The ECU 1 uses the authentication information stored in the storage unit 13 to perform authentication processing with the wireless key 3, and when the authentication processing is successful, a request from the wireless key 3 is made. Lock / unlock the door according to the conditions.

For example, the operation unit 34 of the wireless key 3 is provided with a door lock switch and an unlock switch of the vehicle 100. When the user performs an operation on these switches, the operation unit 34 notifies the control unit 31 that the operation has been performed. In response to this notification, the control unit 31 reads the authentication information stored in the storage unit 33, generates transmission information that has been subjected to processing such as encryption based on the read authentication information, and transmits the generated information to the wireless communication unit. At 32, it is converted into a radio signal and transmitted to the vehicle 100. The transmission information from the wireless key 3 to the vehicle 100 includes identification information attached to the wireless key 3, lock / unlock request information, and the like.

When the wireless communication unit 12 receives a wireless signal from the wireless key 3, the ECU 1 of the vehicle 100 reads the authentication information stored in the storage unit 13, and performs processing such as combining received information based on the read authentication information. And based on information such as identification information included in the received information, it is determined whether or not the wireless key 3 related to the received information is valid. When it is determined that the wireless key 3 is valid, the ECU 1 causes the door lock mechanism 25 to lock / unlock the door of the vehicle 100 in accordance with the lock / unlock request included in the received information.

<Communication partner selection>
As mentioned above, ECU1 which concerns on this Embodiment performs the process regarding TPMS, and the process regarding a keyless entry system. The ECU 1 needs to perform wireless communication with the sensor unit 6 regarding the TPMS, and needs to perform wireless communication with the wireless key 3 regarding the keyless entry system, both of which are performed using the wireless communication unit 12. However, the wireless communication unit 12 cannot perform wireless communication with the sensor unit 6 and wireless communication with the wireless key 3 at the same time, and performs wireless communication with one of them. For this reason, the control unit 11 of the ECU 1 performs a process of selecting which of the sensor unit 6 and the wireless key 3 is the communication partner of the wireless communication unit 12.

The control unit 11 of the ECU 1 according to Embodiment 1 selects a communication partner of the wireless communication unit 12 based on the operation state of the shift lever 22 of the vehicle 100 and the operation state of the engine. The control unit 11 acquires an input signal from the shift lever 22 and determines whether or not the operation state of the shift lever 22 is “P” based on the acquired signal. Further, the control unit 11 acquires an input signal from the engine control device 21 and determines whether or not the engine of the vehicle 100 is operating based on the acquired signal.

For example, when the operation state of the shift lever 22 of the vehicle 100 is “P” or the engine of the vehicle 100 is not operating, the control unit 11 determines that the vehicle 100 is not in the running state, and the keyless entry system. The wireless key 3 is selected as the communication partner of the wireless communication unit 12. On the other hand, when the operation state of the shift lever is other than “P” and the engine is operating, it is determined that the vehicle 100 is in a traveling state or a travelable state, and the control unit 11 relates to TPMS. In order to perform processing, the sensor unit 6 is selected as a communication partner of the wireless communication unit 12.

<Flowchart>
FIG. 5 is a flowchart illustrating a procedure of a communication partner selection process performed by the ECU 1 according to the present embodiment. The control unit 11 of the ECU 1 acquires the operation state of the shift lever 22 via the input I / F unit 14 (step S1), and determines whether or not the operation state of the shift lever 22 is parking (step S2). . When the operation state of the shift lever 22 is parking (S2: YES), the control unit 11 selects the wireless key 3 as a wireless communication partner of the wireless communication unit 12 (step S6), and returns the process to step S1.

When the operation state of the shift lever 22 is not parking (S2: NO), the control unit 11 acquires an input signal from the engine control device 21 via the input I / F unit 14, thereby operating the engine of the vehicle 100. A state is acquired (step S3). The control unit 11 determines whether or not the engine of the vehicle 100 is operating (step S4). When the engine is operating (S4: YES), the control unit 11 selects the sensor unit 6 as a wireless communication partner of the wireless communication unit 12 (step S5), and returns the process to step S1. When the engine is not operating (S4: NO), the control unit 11 selects the wireless key 3 as a wireless communication partner of the wireless communication unit 12 (step S6), and returns the process to step S1.

FIG. 6 is a flowchart showing a procedure of processing related to the keyless entry system performed by the ECU 1 according to the present embodiment. The control unit 11 of the ECU 1 determines whether or not the information from the wireless key 3 has been received by the wireless communication unit 12 (step S11). If the information has not been received (S11: NO), the information is stored. Wait for reception. When information is received from the wireless key 3 (S11: YES), the control unit 11 performs an authentication process based on the received information (step S12) and determines whether the authentication is successful (step S13). When the authentication is successful (S13: YES), the control unit 11 operates the door lock mechanism 25 based on the lock / unlock request included in the received information, and performs the door lock / unlock process of the vehicle 100. (Step S14), the process proceeds to step S15. When authentication fails (S13: NO), the control part 11 advances a process to step S15, without performing a lock / unlock process. The control part 11 memorize | stores the result of the authentication process in step S12 in the memory | storage part 13 etc. (step S15), and returns a process to step S11.

FIG. 7 is a flowchart showing a procedure of processing related to TPMS performed by the ECU 1 according to the present embodiment. The control unit 11 of the ECU 1 receives information from the sensor unit 6 at the wireless communication unit 12 (step S21), and acquires a detection result of the wheel speed sensor 5 via the input I / F unit 14 (step S22). ). The control unit 11 calculates the difference value of the phase angle at a predetermined time from the phase angle of the wheel included in the reception information from the sensor unit 6, and similarly calculates the difference value from the phase angle of the wheel detected by the wheel speed sensor 5. Is calculated (step S23). The controller 11 determines the mounting position of the wheel by examining the correlation between the difference value related to the sensor unit 6 and the difference value related to the wheel speed sensor 5 (step S24).

Next, the control unit 11 acquires the air pressure of the wheel included in the reception information from the sensor unit 6 (step S25). The control unit 11 determines whether or not the acquired air pressure is within an allowable range (step S26). When the air pressure is not within the allowable range (S26: NO), the control unit 11 performs a warning display using the display device 24 (step S27), and returns the process to step S21. If the air pressure is within the allowable range (S26: YES), the control unit 11 returns the process to step S21 without displaying a warning.

<Summary>
In the communication partner selection system according to the present embodiment having the above-described configuration, the wireless key 3 for the keyless entry system and the sensor unit 6 provided on the wheel for the TPMS are connected to the ECU 1 provided on the vehicle body. Wireless communication between them. The ECU 1 controls the lock / unlock of the door of the vehicle by operating the door lock mechanism 25 by communication with the wireless key 3. ECU1 acquires the air pressure of the wheel of vehicle 100 by communication with sensor unit 6, and performs warning according to the detection result of the air pressure. Further, the ECU 1 selects a wireless communication partner by the wireless communication unit 12 according to the operation state of the shift lever 22 of the vehicle 100 and the operation state of the engine of the vehicle 100. The ECU 1 performs wireless communication with the wireless key 3 for the keyless entry system when the operation state of the shift lever 22 is parking or the engine is not operating. The ECU 1 performs wireless communication with the sensor unit 6 for TPMS when the operation state of the shift lever 22 is other than parking and the engine is operating.

Thus, the communication partner selection system according to the present embodiment can select the communication partner of the wireless communication unit 12 and realize system switching between the keyless entry system and the TPMS at an appropriate timing. In addition, since the determination according to the operation state of the shift lever 22 and the operation state of the engine can be realized without adding special hardware or the like in the existing vehicle 100, accurate selection control of the wireless communication partner can be performed. It can be realized at low cost.

In the present embodiment, four wheels are mounted on vehicle 100, but the present invention is not limited to this, and a configuration in which three or less wheels or five or more wheels are mounted on the vehicle may be employed. . In addition, the ECU 1 is configured to perform all the processes related to the keyless entry system, the processes related to the TPMS, and the like. However, the present invention is not limited to this. For example, a plurality of devices such as a lock control ECU, a TPMS ECU, and a wireless communication device exchange information via an in-vehicle network or the like, so that the processing performed by the ECU 1 according to the present embodiment is performed in a distributed manner. Good. The ECU 1 is configured to acquire signals from the wheel speed sensor 5, the engine control device 21, the shift lever 22, and the parking brake 23 via the input I / F unit 14. However, the present invention is not limited to this. It is good also as a structure acquired via a network. Moreover, although ECU1 implement | achieves what is called a keyless entry system according to the radio | wireless communication with the radio | wireless key 3, it is not restricted to this, You may implement | achieve what is called a smart entry system. The ECU 1 may be configured not to acquire an input signal from the parking brake 23 if it is not necessary. Moreover, although ECU1 was set as the structure which judges the operating state of the engine of the vehicle 100 according to the input signal from the engine control apparatus 21, it does not restrict to this. The ECU 1 may be configured to determine whether or not the engine is operating based on the state of the IG switch or the like. The ECU 1 is configured to select a wireless communication partner according to the operation state of the shift lever 22 of the vehicle 100 and the operation state of the engine. However, for example, as shown in the following embodiment, other conditions are considered. It is also possible to adopt a configuration for selecting a partner for wireless communication.

(Embodiment 2)
The ECU 1 of the communication partner selection system according to the second embodiment uses the wireless communication unit 12 according to the operation state of the shift lever 22 of the vehicle 100 and the result of the authentication process with the wireless key 3 for the keyless entry system. Select the wireless communication partner. If the operation state of the shift lever 22 is parking or the authentication process with the wireless key 3 is not successful, the ECU 1 determines that the vehicle 100 is not in a traveling state or a travelable state, and is a partner for wireless communication. The wireless key 3 is selected. When the operation state of the shift lever 22 is other than parking and the authentication process is successful, the ECU 1 determines that the vehicle 100 is in a traveling state or a travelable state, and uses the sensor unit 6 as a wireless communication partner. select.

FIG. 8 is a flowchart showing a communication partner selection process performed by the ECU 1 according to the second embodiment. The control unit 11 of the ECU 1 according to the second embodiment acquires the operation state of the shift lever 22 via the input I / F unit 14 (step S31), and determines whether or not the operation state of the shift lever 22 is parking. Determination is made (step S32). When the operation state of the shift lever 22 is parking (S32: YES), the control unit 11 selects the wireless key 3 as a wireless communication partner of the wireless communication unit 12 (step S36), and returns the process to step S31.

When the operation state of the shift lever 22 is not parking (S32: NO), the control unit 11 reads the result of the authentication process stored in the storage unit 13 (step S33), and whether or not the result of the authentication process is a successful authentication. Is determined (step S34). If the result of the authentication process is a successful authentication (S34: YES), the control unit 11 selects the sensor unit 6 as a wireless communication partner of the wireless communication unit 12 (step S35), and returns the process to step S31. If the result of the authentication process is not successful authentication (S34: NO), the control unit 11 selects the wireless key 3 as the wireless communication partner of the wireless communication unit 12 (step S36), and returns the process to step S31.

The communication partner selection system according to the second embodiment configured as described above selects a wireless communication partner according to the operation state of the shift lever 22 and the result of the authentication process with the wireless key 3. As a result, the communication partner selection system according to the second embodiment can realize system switching between the keyless entry system and the TPMS at an appropriate timing, similarly to the communication partner selection system according to the first embodiment described above. Since the determination according to the operation state of the shift lever 22 and the result of the authentication process with the wireless key 3 can be realized without adding special hardware or the like in the existing vehicle 100, accurate wireless communication is possible. The partner's selection control can be realized at low cost. Further, by using the result of the authentication process as a condition, the use of the TPMS system can be limited to authorized users. In the second embodiment, the ECU 1 may be configured not to acquire an input signal from the engine control device 21 or an input signal from the parking brake 23 unless necessary.

(Embodiment 3)
The ECU 1 of the communication partner selection system according to Embodiment 3 selects a partner for wireless communication by the wireless communication unit 12 according to the on / off state of the parking brake 23 of the vehicle 100 and the operating state of the engine of the vehicle 100. To do. When the parking brake 23 is in the on state or the engine is not operating, the ECU 1 determines that the vehicle 100 is not in the traveling state or the traveling enabled state, and selects the wireless key 3 as a wireless communication partner. When the parking brake 23 is in an off state and the engine is operating, the ECU 1 determines that the vehicle 100 is in a traveling state or a travelable state, and selects the sensor unit 6 as a wireless communication partner.

FIG. 9 is a flowchart showing a communication partner selection process performed by the ECU 1 according to the third embodiment. The control unit 11 of the ECU 1 according to the third embodiment acquires the on / off state of the parking brake 23 via the input I / F unit 14 (step S41), and determines whether or not the parking brake 23 is in the off state. Determination is made (step S42). When the parking brake 23 is on (S42: NO), the control unit 11 selects the wireless key 3 as the wireless communication partner of the wireless communication unit 12 (step S46), and returns the process to step S41.

When the parking brake 23 is in an off state (S42: YES), the control unit 11 acquires an input signal from the engine control device 21 via the input I / F unit 14, thereby operating the engine of the vehicle 100. Is acquired (step S43). The control unit 11 determines whether or not the engine of the vehicle 100 is operating (step S44). When the engine is operating (S44: YES), the control unit 11 selects the sensor unit 6 as a wireless communication partner of the wireless communication unit 12 (step S45), and returns the process to step S41. When the engine is not operating (S44: NO), the control unit 11 selects the wireless key 3 as a wireless communication partner of the wireless communication unit 12 (step S46), and returns the process to step S41.

The communication partner selection system according to the third embodiment configured as described above selects a partner for wireless communication according to the on / off state of the parking brake 23 and the operating state of the engine. As a result, the communication partner selection system according to the third embodiment can realize system switching between the keyless entry system and the TPMS at an appropriate timing, similarly to the communication partner selection system according to the first and second embodiments described above. . In addition, since the determination according to the on / off state of the parking brake 23 and the operating state of the engine can be realized without adding special hardware or the like in the existing vehicle 100, it is possible to select a wireless communication partner with high accuracy. Control can be realized at low cost. In the third embodiment, the ECU 1 may be configured not to acquire an input signal from the shift lever 22 if it is not necessary.

(Embodiment 4)
The ECU 1 of the communication partner selection system according to the fourth embodiment is configured to communicate with the wireless communication unit 12 according to the on / off state of the parking brake 23 of the vehicle 100 and the result of the authentication process with the wireless key 3. Select. When the parking brake 23 is in the on state or the authentication process with the wireless key 3 is not successful, the ECU 1 determines that the vehicle 100 is not in the traveling state or the traveling enabled state, and wirelessly communicates with the wireless communication partner. Select key 3. When the parking brake 23 is in an off state and the authentication process is successful, the ECU 1 determines that the vehicle 100 is in a traveling state or a travelable state, and selects the sensor unit 6 as a wireless communication partner.

FIG. 10 is a flowchart showing a communication partner selection process performed by the ECU 1 according to the fourth embodiment. The control unit 11 of the ECU 1 according to the fourth embodiment acquires the on / off state of the parking brake 23 via the input I / F unit 14 (step S51), and determines whether the parking brake 23 is in the off state. Determination is made (step S52). When the parking brake 23 is on (S52: NO), the control unit 11 selects the wireless key 3 as the wireless communication partner of the wireless communication unit 12 (step S56), and returns the process to step S51.

When the parking brake 23 is in the off state (S52: YES), the control unit 11 reads the result of the authentication process stored in the storage unit 13 (step S53), and determines whether or not the result of the authentication process is an authentication success. Is determined (step S54). If the result of the authentication process is a successful authentication (S54: YES), the control unit 11 selects the sensor unit 6 as a wireless communication partner of the wireless communication unit 12 (step S55), and returns the process to step S51. When the result of the authentication processing is not successful authentication (S54: NO), the control unit 11 selects the wireless key 3 as a wireless communication partner of the wireless communication unit 12 (step S56), and returns the processing to step S51.

The communication partner selection system according to the fourth embodiment having the above configuration selects a wireless communication partner according to the on / off state of the parking brake 23 and the result of the authentication process with the wireless key 3. As a result, the communication partner selection system according to the fourth embodiment realizes system switching between the keyless entry system and the TPMS at an appropriate timing, similar to the communication partner selection systems according to the first, second, and third embodiments described above. Can do. In addition, the determination according to the on / off state of the parking brake 23 and the result of the authentication process with the wireless key 3 can be realized without adding any special hardware or the like in the existing vehicle 100, so that the accuracy is high. The selection control of the wireless communication partner can be realized at low cost. In the fourth embodiment, the ECU 1 may be configured not to acquire an input signal from the engine control device 21 or an input signal from the shift lever 22 unless it is necessary.

(Embodiment 5)
The ECU 1 of the communication partner selection system according to the fifth embodiment has four types of results of the authentication process with the operation state of the shift lever 22, the on / off state of the parking brake 23, the operating state of the engine of the vehicle 100, and the wireless key 3. Judgment of conditions and selection of wireless communication partner. When the operation state of the shift lever 22 is parking, the parking brake 23 is on, the engine is not operating, or the authentication process with the wireless key 3 is not successful, the ECU 1 Is not in the traveling state or the traveling enabled state, and the wireless key 3 is selected as a wireless communication partner. When the operation state of the shift lever 22 is other than parking, the parking brake 23 is off, the engine is operating, and the authentication process with the wireless key 3 is successful, the ECU 1 It is determined that the vehicle is in the traveling state or the traveling-enabled state, and the sensor unit 6 is selected as a wireless communication partner.

FIG. 11 is a flowchart showing a communication partner selection process performed by the ECU 1 according to the fifth embodiment. The control unit 11 of the ECU 1 according to the fifth embodiment acquires the operation state of the shift lever 22 via the input I / F unit 14 (step S61), and determines whether or not the operation state of the shift lever 22 is parking. Determination is made (step S62). When the operation state of the shift lever 22 is parking (S62: YES), the control unit 11 selects the wireless key 3 as a wireless communication partner of the wireless communication unit 12 (step S70), and returns the process to step S61.

When the operation state of the shift lever 22 is not parking (S62: NO), the control unit 11 acquires the on / off state of the parking brake 23 via the input I / F unit 14 (step S63), and the parking brake 23 is It is determined whether or not it is in an off state (step S64). When the parking brake 23 is on (S64: NO), the control unit 11 selects the wireless key 3 as the wireless communication partner of the wireless communication unit 12 (step S70), and returns the process to step S61.

When the parking brake 23 is in an off state (S64: YES), the control unit 11 acquires an input signal from the engine control device 21 via the input I / F unit 14, thereby operating the engine of the vehicle 100. Is acquired (step S65). The controller 11 determines whether or not the engine of the vehicle 100 is operating (step S66). When the engine is not operating (S66: NO), the control unit 11 selects the wireless key 3 as a wireless communication partner of the wireless communication unit 12 (step S70), and returns the process to step S61.

When the engine is operating (S66: YES), the control unit 11 reads the result of the authentication process stored in the storage unit 13 (step S67), and determines whether or not the result of the authentication process is a successful authentication. (Step S68). If the result of the authentication process is a successful authentication (S68: YES), the control unit 11 selects the sensor unit 6 as a wireless communication partner of the wireless communication unit 12 (step S69), and returns the process to step S61. When the result of the authentication processing is not successful authentication (S68: NO), the control unit 11 selects the wireless key 3 as the wireless communication partner of the wireless communication unit 12 (step S70), and returns the processing to step S61.

In the communication partner selection system according to the fifth embodiment having the above-described configuration, the operation state of the shift lever 22, the on / off state of the parking brake 23, the operating state of the engine of the vehicle 100, and the result of the authentication process with the wireless key 3 are obtained. The four conditions are determined to select a wireless communication partner. As a result, the communication partner selection system according to Embodiment 5 can more reliably realize switching of the keyless entry system and the TPMS at appropriate timing. The determination order of the four conditions is not limited to the order described in the flowchart of FIG. 11 and may be performed in an appropriate order. Moreover, it is good also as a structure which does not determine about all four conditions, but determines about any three conditions of four conditions.

1 ECU (vehicle body side communication device)
3 Wireless key (portable communication device)
5 Wheel speed sensor 6 Sensor unit (wheel side communicator)
11 Control unit (lock control means, selection means, authentication means)
12 Wireless communication unit (communication means)
12a Antenna 13 Storage unit (storage means)
14 Input I / F part (shift state acquisition means, engine operation state acquisition means, parking brake state acquisition means)
DESCRIPTION OF SYMBOLS 15 Output I / F part 21 Engine control apparatus 22 Shift lever 23 Parking brake 24 Display apparatus 25 Door lock mechanism 31 Control part 32 Wireless communication part 32a Antenna 33 Memory | storage part 34 Operation part 61 Control part (detection result transmission means)
62 wireless communication unit 62a antenna 63 air pressure sensor (air pressure detecting means)
64 Wheel speed sensor 100 Vehicle

Claims

A wheel-side communicator provided on a wheel of a vehicle and having a pneumatic pressure detecting means for detecting a pneumatic pressure of a tire, and a pneumatic pressure transmitting means for wirelessly transmitting a detection result of the pneumatic pressure detecting means;
Communication means mounted on the vehicle body and performing wireless communication with the portable communicator or the wheel-side communicator, and based on the result of communication with the portable communicator performed by the communication means, Lock control means for performing locking / unlocking control, shift state acquisition means for acquiring the operation state of the shift lever of the vehicle, engine operation state acquisition means for acquiring the operation state of the engine of the vehicle, and the shift state acquisition means Selection means for selecting whether the communication means performs wireless communication with the portable communication device or the wheel-side communication device according to the operation state acquired by the engine and the operation state acquired by the engine operation state acquisition means. A communication partner selection system comprising: a vehicle body side communication device.
The selection means includes
When the operation state of the shift lever is parking or when the engine is not operating, the portable communicator is selected as a communication partner of the communication means,
The wheel side communicator is selected as a communication partner of the communication means when the operation state of the shift lever is other than parking and the engine is operating. The communication partner selection system according to 1.
The vehicle body-side communicator has authentication means for performing authentication processing with the portable communication device, and storage means for storing the result of authentication processing by the authentication means,
The selection unit performs selection based on the operation state acquired by the shift state acquisition unit, the operation state acquired by the engine operation state acquisition unit, and the result of the authentication process stored in the storage unit. The communication partner selection system according to claim 1 or 2, wherein the communication partner selection system according to claim 1 or 2 is provided.
A wheel-side communicator provided on a wheel of a vehicle and having a pneumatic pressure detecting means for detecting a pneumatic pressure of a tire, and a pneumatic pressure transmitting means for wirelessly transmitting a detection result of the pneumatic pressure detecting means;
Communication means mounted on the vehicle body and performing wireless communication with the portable communicator or the wheel-side communicator, and based on the result of communication with the portable communicator performed by the communication means, Lock control means for performing locking / unlocking control, shift state acquisition means for acquiring the operation state of the shift lever of the vehicle, authentication means for performing authentication processing with the portable communication device, authentication processing by the authentication means Storage means for storing results, and the communication means according to the operation state acquired by the shift state acquisition means and the result of the authentication process stored in the storage means, the portable communication device or the wheel side communication device A communication partner selection system comprising: a vehicle body side communication device having selection means for selecting which of the wireless communication with which to communicate.
The selection means includes
When the operation state of the shift lever is parking, or when the result of the authentication process is not successful, the portable communication device is selected as a communication partner of the communication means,
The wheel side communicator is selected as a communication partner of the communication means when the operation state of the shift lever is other than parking and the result of the authentication process is authentication success. The communication partner selection system according to claim 4.
The vehicle body side communicator has a parking brake state acquisition means for acquiring an operation / release state of a parking brake of the vehicle,
6. The device according to claim 1, wherein the selection unit further performs selection according to an operation / release state of the parking brake acquired by the parking brake state acquisition unit. Communication partner selection system described in 1.
A wheel-side communicator provided on a wheel of a vehicle and having a pneumatic pressure detecting means for detecting a pneumatic pressure of a tire, and a pneumatic pressure transmitting means for wirelessly transmitting a detection result of the pneumatic pressure detecting means;
Communication means mounted on the vehicle body and performing wireless communication with the portable communicator or the wheel-side communicator, and based on the result of communication with the portable communicator performed by the communication means, Locking control means for performing locking / unlocking control, parking brake state acquisition means for acquiring an operation / release state of the parking brake of the vehicle, engine operating state acquisition means for acquiring an operating state of the engine of the vehicle, and the parking The communication means wirelessly communicates with either the portable communicator or the wheel side communicator according to the operation / release state of the parking brake acquired by the brake state acquisition means and the operation state acquired by the engine operation state acquisition means. A communication partner selection system comprising: a vehicle body-side communicator having selection means for selecting whether or not to perform.
The selection means includes
When the parking brake is in an operating state or the engine is not operating, the portable communicator is selected as a communication partner of the communication means,
The wheel side communicator is selected as a communication partner of the communication means when the parking brake is in a released state and the engine is operating. Communication partner selection system.
The vehicle body-side communicator has authentication means for performing authentication processing with the portable communication device, and storage means for storing the result of authentication processing by the authentication means,
The selection means includes the operation / release state of the parking brake acquired by the parking brake state acquisition means, the operation state acquired by the engine operation state acquisition means, and the result of the authentication process stored in the storage means. The communication partner selection system according to claim 7 or 8, wherein the selection is performed based on the selection.
A wheel-side communicator provided on a wheel of a vehicle and having a pneumatic pressure detecting means for detecting a pneumatic pressure of a tire, and a pneumatic pressure transmitting means for wirelessly transmitting a detection result of the pneumatic pressure detecting means;
Communication means mounted on the vehicle body and performing wireless communication with the portable communicator or the wheel-side communicator, and based on the result of communication with the portable communicator performed by the communication means, By lock control means for performing locking / unlocking control, parking brake state acquisition means for acquiring the operation / release state of the parking brake of the vehicle, authentication means for performing authentication processing with the portable communication device, and by the authentication means The storage means for storing the result of the authentication process, and the communication means according to the activation / release state of the parking brake acquired by the parking brake state acquisition means and the result of the authentication process stored in the storage means A vehicle-side communicator having selection means for selecting whether to perform wireless communication with the portable communicator or the wheel-side communicator. Selection system.
The selection means includes
When the parking brake is in an operating state or when the result of the authentication process is not successful, the portable communication device is selected as a communication partner of the communication means,
The wheel side communicator is selected as a communication partner of the communication means when the parking brake is in a released state and the result of the authentication process is a successful authentication. 10. The communication partner selection system according to 10.
Wireless communication with a wheel-side communicator or a portable communicator having an air pressure detecting means provided on a vehicle wheel for detecting tire air pressure and an air pressure transmitting means for wirelessly transmitting a detection result of the air pressure detecting means. Communication means;
Lock control means for performing locking / unlocking control of the door of the vehicle based on a communication result with the portable communication device performed by the communication means;
Shift state acquisition means for acquiring an operation state of the shift lever of the vehicle;
Engine operating state acquisition means for acquiring the operating state of the engine of the vehicle;
Selects whether the communication means performs wireless communication with the portable communicator or the wheel side communicator according to the operation state acquired by the shift state acquisition means and the operation state acquired by the engine operation state acquisition means. And a selection means to
A vehicle body side communication device mounted on a vehicle body of the vehicle.
Wireless communication with a wheel-side communicator or a portable communicator having an air pressure detecting means provided on a vehicle wheel for detecting tire air pressure and an air pressure transmitting means for wirelessly transmitting a detection result of the air pressure detecting means. Communication means;
Lock control means for performing locking / unlocking control of the door of the vehicle based on a communication result with the portable communication device performed by the communication means;
Shift state acquisition means for acquiring an operation state of the shift lever of the vehicle;
Authentication means for performing authentication processing with the portable communication device;
Storage means for storing the result of authentication processing by the authentication means;
Whether the communication means performs wireless communication with the portable communication device or the wheel side communication device according to the operation state acquired by the shift state acquisition means and the result of the authentication process stored in the storage means. A selection means for selecting, and
A vehicle body side communication device mounted on a vehicle body of the vehicle.
Wireless communication with a wheel-side communicator or a portable communicator having an air pressure detecting means provided on a vehicle wheel for detecting tire air pressure and an air pressure transmitting means for wirelessly transmitting a detection result of the air pressure detecting means. Communication means;
Lock control means for performing locking / unlocking control of the door of the vehicle based on a communication result with the portable communication device performed by the communication means;
Parking brake state acquisition means for acquiring an operation / release state of the parking brake of the vehicle;
Engine operating state acquisition means for acquiring the operating state of the engine of the vehicle;
According to the operation / release state of the parking brake acquired by the parking brake state acquisition means and the operation state acquired by the engine operation state acquisition means, the communication means is either the portable communication device or the wheel side communication device. And a selection means for selecting whether to perform wireless communication,
A vehicle body side communication device mounted on a vehicle body of the vehicle.
Wireless communication with a wheel-side communicator or a portable communicator having an air pressure detecting means provided on a vehicle wheel for detecting tire air pressure and an air pressure transmitting means for wirelessly transmitting a detection result of the air pressure detecting means. Communication means;
Lock control means for performing locking / unlocking control of the door of the vehicle based on a communication result with the portable communication device performed by the communication means;
Parking brake state acquisition means for acquiring an operation / release state of the parking brake of the vehicle;
Authentication means for performing authentication processing with the portable communication device;
Storage means for storing the result of authentication processing by the authentication means;
The communication means is either the portable communicator or the wheel side communicator according to the operation / release state of the parking brake acquired by the parking brake state acquisition means and the result of the authentication process stored in the storage means. And a selection means for selecting whether to perform wireless communication,
A vehicle body side communication device mounted on a vehicle body of the vehicle.