JP7122563B2 - Wireless communication system and wireless communication device - Google Patents

Description

The present disclosure relates to a wireless communication system and a wireless communication device suitable for use in two-wheeled vehicles.

Conventionally, there is a system described in Patent Literature 1, for example, as a technique for preventing vehicle theft. This system is equipped with a positioning sensor and an in-vehicle communication terminal having communication means for transmitting and receiving data. Acquire location information of a mobile communication terminal (for example, a smartphone) possessed. Then, the distance between the on-vehicle communication terminal and the mobile communication terminal is calculated from the position of the mobile communication terminal, and when the distance is equal to or greater than a predetermined value, it is determined that the vehicle has been stolen, and the vehicle user carries a theft signal. Notifies the mobile communication terminal that

JP 2010-228691 A

However, in the system described in the above-mentioned Patent Document 1, it is necessary to provide the vehicle with communication means for transmitting and receiving data between the positioning sensor and the base station. It is difficult to apply it to a two-wheeled vehicle such as a scooter. In addition, since the theft is detected through communication with the telematics center, it takes a long time for the theft to be confirmed, and prompt notification cannot be given.

The present disclosure aims to provide a wireless communication system and a wireless communication device that can achieve low cost and low power consumption without using telematics services and can quickly notify a user of an abnormality in a vehicle. aim.

A radio communication system of the present disclosure includes a vehicle having an unauthorized use detection circuit and a first radio communication circuit, and a radio communication terminal having a second radio communication circuit capable of radio communication with the first radio communication circuit. In the wireless communication system, when the unauthorized use detection circuit of the vehicle detects unauthorized use and the vehicle and the wireless communication terminal are within a predetermined distance, the first wireless communication circuit detects the second When the emergency information is transmitted to the wireless communication circuit, and the unauthorized use detection circuit of the vehicle detects the unauthorized use, and when the vehicle and the wireless communication terminal are not within the predetermined distance, the first wireless The communication circuit transmits a Bluetooth (registered trademark) advertising packet containing emergency information.

According to the present disclosure, when unauthorized use of the vehicle is detected and the wireless communication terminal is within a predetermined distance from the vehicle, emergency information is transmitted from the vehicle to the wireless communication terminal, and when unauthorized use of the vehicle is detected and when the wireless communication terminal is not at a predetermined distance from the vehicle, the vehicle transmits a Bluetooth advertising packet containing the emergency information. , and if it is not within a predetermined distance from the vehicle, it can indirectly receive Bluetooth advertising packets from the vehicle via another wireless communication terminal via cellular communication, WiFi (registered trademark), or the like. Therefore, it is possible to seamlessly notify the user of the abnormality of the vehicle. In addition, since telematics services are not used, low cost and low power consumption can be achieved.

In the wireless communication system of the present disclosure, in the configuration described above, the predetermined distance is a first distance, the vehicle includes an operation unit, and the vehicle and the wireless communication terminal are separated from each other by a second distance smaller than the first distance. Assume that the unauthorized use detection circuit detects unauthorized use when the operation unit is not within the distance and a predetermined operation is performed on the operation unit.

According to the present disclosure, when the wireless communication terminal is not at the second distance from the vehicle and a predetermined operation is performed on the operation unit of the vehicle, the unauthorized use detection circuit detects unauthorized use. Abuse can be detected.

In the wireless communication system of the present disclosure, in the configuration described above, the first distance is greater than the second distance.

According to the present disclosure, when the wireless communication terminal is not at the second distance that is smaller than the first distance, it is possible to detect an abnormality in the vehicle, and it is possible to promptly notify the abnormality of the vehicle.

In the wireless communication system of the present disclosure, in the configuration described above, the first wireless communication circuit of the vehicle and the second wireless communication circuit of the wireless communication terminal comply with the Bluetooth standard.

According to the present disclosure, it is possible to inexpensively perform communication between a vehicle and a wireless communication terminal.

In the above configuration, the radio communication system of the present disclosure obtains the distance between the vehicle and the radio communication terminal by distance measurement using Bluetooth communication and/or UWB distance measurement technology.

According to the present disclosure, it is possible to easily and inexpensively measure the distance between a vehicle and a wireless communication terminal.

In the radio communication system of the present disclosure, in the above configuration, when the first radio communication circuit of the vehicle and the second radio communication circuit of the radio communication terminal are in a predetermined communication state, the radio communication between the vehicle and the radio communication terminal is performed. It is assumed that the terminal is at a predetermined distance, and the vehicle and the wireless communication terminal are not in the predetermined communication state between the first wireless communication circuit of the vehicle and the second wireless communication circuit of the wireless communication terminal. is not at the predetermined distance.

According to the present disclosure, predetermined communication can be performed between the vehicle and the wireless communication terminal when the vehicle and the wireless communication terminal are at a predetermined distance.

In the wireless communication system of the present disclosure, in the configuration described above, when the unauthorized use detection circuit of the vehicle does not detect the unauthorized use, the first wireless communication circuit does not transmit the emergency information.

According to the present disclosure, emergency information is transmitted only when unauthorized use of a vehicle is detected, so false alarms can be prevented.

In the wireless communication system of the present disclosure, in the above configuration, when the unauthorized use detection circuit of the vehicle detects the unauthorized use, and the first wireless communication circuit of the vehicle and the second wireless communication terminal of the wireless communication terminal When the communication circuit is not in the predetermined communication state, the first wireless communication circuit transmits a Bluetooth advertising packet containing the identification information of the vehicle and the emergency information.

According to the present disclosure, unauthorized use of a vehicle is detected, and a Bluetooth advertising packet containing vehicle identification information and emergency information is transmitted only when the vehicle and the wireless communication terminal are not in a predetermined communication state. It is possible to prevent the transmission of Bluetooth advertising packets containing emergency information when necessary.

In the wireless communication system of the present disclosure, in the configuration described above, the unauthorized use detection circuit of the vehicle includes an acceleration sensor, and the unauthorized use is detected when the acceleration sensor detects a predetermined acceleration.

According to the present disclosure, the impact applied to the vehicle can be detected with high sensitivity by the acceleration sensor.

In the wireless communication system of the present disclosure, in the configuration described above, the wireless communication terminal includes at least a display circuit, and the display circuit can display information corresponding to the emergency information.

According to the present disclosure, a user of a wireless communication terminal can visually confirm information corresponding to emergency information.

A radio communication device of the present disclosure has an unauthorized use detection circuit and a first radio communication circuit, can be mounted on a vehicle, and has a second radio communication circuit capable of radio communication with the first radio communication circuit. In a wireless communication device capable of communicating with a communication terminal, when the unauthorized use detection circuit detects unauthorized use and when the vehicle and the wireless communication terminal are within a predetermined distance, the first wireless communication circuit When emergency information is transmitted to the second wireless communication circuit, and the unauthorized use detection circuit detects the unauthorized use, and when the vehicle and the wireless communication terminal are not within the predetermined distance, the first wireless communication The communication circuit transmits a Bluetooth (registered trademark) advertising packet containing emergency information.

According to the present disclosure, when unauthorized use of the vehicle is detected and the wireless communication terminal is within a predetermined distance from the vehicle, emergency information is transmitted from the vehicle to the wireless communication terminal, and when unauthorized use of the vehicle is detected and when the wireless communication terminal is not at a predetermined distance from the vehicle, the vehicle transmits a Bluetooth advertising packet containing the emergency information. , and if it is not at a predetermined distance from the vehicle, it can indirectly receive a Bluetooth advertising packet from the vehicle via cellular communication, WiFi, or the like. Therefore, it is possible to seamlessly notify the user of the abnormality of the vehicle. In addition, since telematics services are not used, low cost and low power consumption can be achieved.

In the wireless communication device of the present disclosure, in the configuration described above, the predetermined distance is a first distance, the vehicle includes an operation unit, and the vehicle and the wireless communication terminal are separated from each other by a second distance smaller than the first distance. Assume that the unauthorized use detection circuit detects unauthorized use when the operation unit is not within the distance and a predetermined operation is performed on the operation unit.

According to the present disclosure, when the wireless communication terminal is not at the second distance from the vehicle and a predetermined operation is performed on the operation unit of the vehicle, the unauthorized use detection circuit detects unauthorized use. Abuse can be detected.

In the wireless communication device of the present disclosure, in the configuration described above, the first distance is greater than the second distance.

According to the present disclosure, when the wireless communication terminal is not at the second distance that is smaller than the first distance, it is possible to detect an abnormality in the vehicle, and it is possible to promptly notify the abnormality of the vehicle.

In the wireless communication device of the present disclosure, in the configuration described above, the first wireless communication circuit and the second wireless communication circuit of the wireless communication terminal comply with the Bluetooth standard.

According to the present disclosure, it is possible to inexpensively perform communication between a vehicle and a wireless communication terminal.

In the above configuration, the wireless communication device of the present disclosure measures the distance between the vehicle and the wireless communication terminal using Bluetooth communication and/or UWB ranging technology.

According to the present disclosure, it is possible to easily and inexpensively measure the distance between a vehicle and a wireless communication terminal.

In the wireless communication device of the present disclosure, in the configuration described above, when the first wireless communication circuit and the second wireless communication circuit of the wireless communication terminal are in a predetermined communication state, the vehicle and the wireless communication terminal are in a predetermined state. and when the first wireless communication circuit and the second wireless communication circuit of the wireless communication terminal are not in the predetermined communication state, the vehicle and the wireless communication terminal are not at the predetermined distance case.

According to the present disclosure, predetermined communication can be performed between the vehicle and the wireless communication terminal when the vehicle and the wireless communication terminal are at a predetermined distance.

In the wireless communication device of the present disclosure, in the configuration described above, when the unauthorized use detection circuit does not detect the unauthorized use, the first wireless communication circuit does not transmit the emergency information.

According to the present disclosure, since emergency information is transmitted only when unauthorized use of a vehicle is detected, it is possible to prevent transmission of Bluetooth advertising packets including emergency information when unnecessary.

In the wireless communication device of the present disclosure, in the configuration described above, when the unauthorized use detection circuit detects the unauthorized use, and the first wireless communication circuit and the second wireless communication circuit of the wireless communication terminal communication state, the first wireless communication circuit transmits a Bluetooth advertising packet containing the identification information of the vehicle and the emergency information.

According to the present disclosure, unauthorized use of a vehicle is detected, and a Bluetooth advertising packet containing vehicle identification information and emergency information is transmitted only when the vehicle and the wireless communication terminal are not in a predetermined communication state. It is possible to prevent the transmission of Bluetooth advertising packets containing emergency information when necessary.

In the wireless communication device of the present disclosure, in the configuration described above, the unauthorized use detection circuit includes an acceleration sensor, and the unauthorized use is detected when the acceleration sensor detects a predetermined acceleration.

According to the present disclosure, the impact applied to the vehicle can be detected with high sensitivity by the acceleration sensor.

In the wireless communication device of the present disclosure, in the configuration described above, the wireless communication terminal includes at least a display circuit, and the display circuit can display information corresponding to the emergency information.

According to the present disclosure, a user of a wireless communication terminal can visually confirm information corresponding to emergency information.

According to the present disclosure, it is possible to achieve low cost and low power consumption without using telematics services, and to quickly notify the user of an abnormality in the vehicle.

FIG. 1 shows a usage pattern of the wireless communication system according to the first embodiment; 1 is a block diagram showing a schematic configuration of a part of a vehicle and a schematic configuration of a vehicle ECU of the wireless communication system according to the first embodiment; FIG. FIG. 4 is a diagram showing output waveforms of a first advertising packet and a second advertising packet transmitted from a vehicle ECU of the radio communication system according to the first embodiment; FIG. 4 is a diagram showing output waveforms of a first advertising packet and a second advertising packet transmitted from a vehicle ECU of the radio communication system according to the first embodiment; FIG. 2 is a block diagram showing a schematic configuration of an information sharing user terminal in the wireless communication system of the first embodiment; FIG. 2 is a block diagram showing a schematic configuration of a bicycle parking lot Bluetooth unit of the wireless communication system of the first embodiment; FIG. 2 is a block diagram showing a schematic configuration of a server of the wireless communication system of the first embodiment; FIG. FIG. 3 is a diagram showing a packet structure of LE Uncoded PHYs of a Bluetooth advertising packet used in the wireless communication system of the first embodiment; FIG. 3 is a diagram showing a data structure of AD Type: 0xFF of a Bluetooth advertising packet used in the wireless communication system of the first embodiment; FIG. 4 is a diagram showing an example of server notification information notified to the server device of the wireless communication system according to the first embodiment; FIG. 4 is a diagram showing an example of user notification information notified to a vehicle user terminal of the wireless communication system according to the first embodiment; FIG. 2 is a diagram showing an overview of the operation of the vehicle ECU of the wireless communication system of the first embodiment; FIG. 2 is a sequence diagram for explaining normal and emergency operations of the vehicle ECU, vehicle user terminal, information sharing user terminal, and bicycle parking lot Bluetooth unit of the wireless communication system of the first embodiment; FIG. 2 is a flowchart for explaining the operation related to emergency notification of the vehicle ECU of the wireless communication system of the first embodiment; FIG. Flowchart for explaining the operation of the information sharing user terminal of the radio communication system of the first embodiment at the time of emergency notification Flowchart for explaining the operation of the server of the radio communication system of the first embodiment at the time of emergency notification FIG. 2 is a diagram showing how the wireless communication system according to the first embodiment tracks a stolen vehicle; The figure which shows the usage form of the radio|wireless communications system of 2nd Embodiment. A block diagram showing a schematic configuration of a part of a first vehicle and a schematic configuration of a first vehicle ECU in a wireless communication system according to a second embodiment. A block diagram showing a schematic configuration of a part of a second vehicle and a schematic configuration of a second vehicle ECU in a wireless communication system according to a second embodiment. FIG. 3 is a block diagram showing a schematic configuration of an information sharing user terminal in a wireless communication system according to the second embodiment; FIG. 11 is a diagram showing an example of server notification information transmitted to the server from the telematics radio transmitting/receiving unit of the information sharing user terminal of the radio communication system according to the second embodiment; FIG. 2 is a block diagram showing a schematic configuration of a server of a wireless communication system according to a second embodiment; FIG. 8 is a diagram showing an example of user notification information transmitted from the network communication unit of the server of the wireless communication system according to the second embodiment to the vehicle user terminal; FIG. 11 is a sequence diagram for explaining the operations of the first vehicle ECU, the second vehicle ECU, the vehicle user terminal, the information sharing user terminal, and the server of the wireless communication system of the second embodiment during normal times and emergency times; Flowchart for explaining operation related to emergency notification of the second vehicle ECU of the wireless communication system of the second embodiment Flowchart for explaining the operation of the information sharing user terminal of the wireless communication system of the second embodiment The figure which shows the state of tracking when the 1st vehicle of the radio|wireless communications system of 2nd Embodiment is stolen. A block diagram showing a schematic configuration of a part of a vehicle and a schematic configuration of a vehicle ECU of a wireless communication system according to a third embodiment. Block diagram showing a schematic configuration of a smartphone of the wireless communication system of the third embodiment FIG. 11 is a block diagram showing a schematic configuration of a vehicle electronic key in a wireless communication system according to a third embodiment; FIG. 11 is a diagram showing a usage pattern of the wireless communication system of the third embodiment; FIG. 11 is a sequence diagram showing operations mainly performed by a vehicle ECU of the wireless communication system according to the third embodiment; FIG. 11 is a sequence diagram showing operations mainly performed by a vehicle ECU of the wireless communication system according to the third embodiment; FIG. 11 is a sequence diagram showing operations mainly performed by a vehicle ECU of the wireless communication system according to the third embodiment; FIG. 11 is a sequence diagram showing operations when a server is provided to improve security in the wireless communication system of the third embodiment; FIG. 11 is a sequence diagram showing operations when a server is provided to improve security in the wireless communication system of the third embodiment; FIG. 11 is a sequence diagram showing operations when a server is provided to improve security in the wireless communication system of the third embodiment; Flowchart for explaining the operation of the vehicle ECU of the wireless communication system of the third embodiment Flowchart for explaining the operation of the smartphone of the wireless communication system of the third embodiment FIG. 10 is a flowchart for explaining the operation of the vehicle ECU when security is improved in the wireless communication system of the third embodiment; FIG. Flowchart for explaining the operation of a smartphone when security is improved in the wireless communication system of the third embodiment Flowchart for explaining the operation of the server when security is improved in the wireless communication system of the third embodiment The figure which shows the usage form of the radio|wireless communications system of 4th Embodiment. FIG. 11 is a diagram showing a case where a smartphone of a vehicle user exists outside the BLE communication area of the vehicle ECU in the wireless communication system of the fourth embodiment; FIG. 11 is a diagram showing a case where a smartphone of a vehicle user exists within a BLE communication available area of a vehicle ECU in the wireless communication system of the fourth embodiment; A block diagram showing a schematic configuration of a part of a vehicle and a schematic configuration of a vehicle ECU of a wireless communication system according to a fourth embodiment. A block diagram showing a schematic configuration of a smartphone of a wireless communication system according to a fourth embodiment. FIG. 11 is a sequence diagram showing operations mainly performed by a vehicle ECU in the wireless communication system according to the fourth embodiment; FIG. 11 is a sequence diagram showing operations mainly performed by a vehicle ECU in the wireless communication system according to the fourth embodiment; Flowchart for explaining the operation of the vehicle ECU of the wireless communication system of the fourth embodiment Flowchart for explaining the operation of the smartphone of the wireless communication system of the fourth embodiment

Hereinafter, embodiments specifically disclosing a wireless communication system and a wireless communication device according to the present disclosure will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially the same configurations may be omitted. This is to avoid unnecessary verbosity in the following description and to facilitate understanding by those skilled in the art. It should be noted that the accompanying drawings and the following description are provided for a thorough understanding of the present disclosure by those skilled in the art and are not intended to limit the claimed subject matter.

Preferred embodiments for carrying out the present disclosure will be described in detail below with reference to the drawings.

(First embodiment)
A wireless communication system according to the first embodiment will be described below with reference to FIGS. 1 to 17. FIG. FIG. 1 is a diagram showing a usage pattern of a wireless communication system 1 according to the first embodiment. As shown in the figure, the wireless communication system 1 of the first embodiment includes a vehicle ECU (Electronic Control Unit, wireless communication device) 10 mounted on a vehicle 50 and a vehicle user terminal ( 11, an information sharing user terminal (wireless communication terminal) 12 possessed by a user 52 who shares information with a user 51 of a vehicle 50, and a bicycle parking lot Bluetooth (registered (trademark) unit (fixed base station) 13 , a server 14 wired to the cloud 53 , and a telematics base station (mobile base station) 15 wired to the cloud 53 . The information sharing user terminal 12 and the bicycle parking lot Bluetooth unit 13 are notification devices. Further, identification information is given to the vehicle ECU 10 . This identification information can also be regarded as identification information of the vehicle 50 . This identification information is information that is uniquely determined by the vehicle ECU, and may be, for example, a MAC address.

The vehicle ECU 10, the information sharing user terminal 12, and the bicycle parking lot Bluetooth unit 13 each have a Bluetooth communication function. is done. The information sharing user terminal 12 has a cellular communication function or a WiFi (registered trademark) communication function in addition to the Bluetooth communication function. The vehicle user terminal 11 also has a cellular communication function or a WiFi communication function in addition to the Bluetooth communication function.

A smart phone is suitable for the vehicle user terminal 11 and the information sharing user terminal 12 of the wireless communication system 1 of the first embodiment. Moreover, although the wireless communication system 1 of the first embodiment is applied to a two-wheeled vehicle (motorcycle) 50, it can of course be applied to a four-wheeled vehicle.

Next, configurations of the vehicle ECU 10, the vehicle user terminal 11, the information sharing user terminal 12, the bicycle parking lot Bluetooth unit 13, and the server 14 of the wireless communication system 1 of the first embodiment will be described.

FIG. 2 is a block diagram showing a schematic configuration of part of the vehicle 50 and a schematic configuration of the vehicle ECU 10. As shown in FIG. In the figure, the vehicle ECU 10 includes a switch detection unit 101, an IG authentication determination unit 102, a BT radio transmission/reception unit 103, a GPS reception unit 104, an unauthorized use detection unit (unauthorized use detection circuit) 105, a vehicle speed detection unit 106, a clock 107, A control unit 108 and antennas 110 and 111 are provided. The switch detection unit 101 detects at least on/off of the glove box switch 501 and on/off of the IGKEY switch 502 . The glove box switch 501 is a switch that detects opening and closing of a glove box (not shown) mounted on the vehicle 50, and is turned on when the glove box (not shown) is opened and turned off when the glove box is closed. The IGKEY switch 502 is a switch for starting/stopping the engine of the vehicle 50 and turning on/off the electrical system.

IG authentication determination section 102 performs IG authentication determination for a key (not shown) inserted into IGKEY switch 502 . The IG authentication determination result of IG authentication determination unit 102 is taken into control unit 108 . The BT radio transmission/reception unit 103 performs radio communication conforming to the Bluetooth standard. An antenna 110 for Bluetooth communication is connected to the BT radio transmission/reception unit 103 . BT radio transmission/reception section 103 is controlled by control section 108 . Note that the BT radio transmission/reception unit 103 and the antenna 110 correspond to the first antenna. Further, the vehicle ECU 10 has one antenna 110, but may have a plurality of antennas.

The GPS receiver 104 receives positioning signals transmitted from GPS (Global Positioning System) satellites and outputs second latitude and longitude. An antenna 111 for GPS reception is connected to the GPS reception unit 104 . The second latitude and longitude output from GPS receiving section 104 is taken into control section 108 .

Unauthorized use detection unit 105 has acceleration sensor 1051 and detects abnormalities including theft of vehicle 50 . That is, when the acceleration sensor 1051 detects abnormal vibration in the vehicle 50, the unauthorized use detection unit 105 detects an abnormality including theft. The unauthorized use detection unit 105 repeatedly performs detection. The detection result of unauthorized use detection unit 105 is taken into control unit 108 . A vehicle speed detection unit 106 detects vehicle speed from vehicle speed information managed by a vehicle speed management ECU 503 mounted on the vehicle 50 . A detection result of the vehicle speed detection unit 106 is taken into the control unit 108 . Clock 107 outputs a second time indicating the current date and time. The second time output from clock 107 is taken into control unit 108 .

The control unit 108 controls each part of the device, and includes a CPU (Central Processing Unit) (not shown), a ROM (Read Only Memory) storing a program for operating the CPU, and a CPU used in the operation of the CPU. RAM (Random Access Memory). IG authentication determination section 102 , BT radio transmission/reception section 103 , GPS reception section 104 , unauthorized use detection section 105 , vehicle speed detection section 106 and clock 107 operate under the control of control section 108 . The control unit 108 notifies the vehicle user terminal 11 of the vehicle user 51 of emergency when an abnormality including theft occurs in the vehicle 50 .

When the unauthorized use detection unit 105 detects unauthorized use (that is, when an abnormality including theft occurs in the vehicle 50), the BT radio transmission/reception unit 103 detects the identification information of the vehicle 50, the emergency information, the second time and the second time. A Bluetooth advertising packet containing latitude and longitude is transmitted from the antenna 110 . In this case, the second time is the time when the unauthorized use detection unit 105 last detected unauthorized use. The Bluetooth advertising packet containing the identification information of the vehicle 50 , the emergency information, the second time and the second latitude and longitude is received by the information sharing user terminal 12 and the bicycle parking lot Bluetooth unit 13 . The Bluetooth advertising packet containing the identification information of the vehicle 50, the emergency information, the second time, and the second latitude and longitude will be referred to as a first advertising packet or emergency advertising.

The first advertising packet transmitted from the vehicle ECU 10 contains at least the identification information of the vehicle 50 and the emergency information. That is, the second time and the second latitude/longitude are not necessarily included, and the identification information and the emergency information of the vehicle 50 are sufficient. Also, it is desirable that the transmission of the first advertising packet is not completed only once, but is performed twice or more.

If the unauthorized use detection unit 105 does not detect unauthorized use, the BT radio transmission/reception unit 103 does not transmit the first advertising packet containing the emergency information, but transmits an advertising packet containing no emergency information. An advertising packet that does not contain this emergency information is called a second advertising packet or normal advertising. Also, the transmission of the second advertising packet is not limited to one transmission, and may be performed two or more times.

Further, when the number of transmissions of each of the first advertising packet and the second advertising packet is two or more, the transmission interval of the first advertising packet (first transmission interval) is changed to the transmission interval of the second advertising packet (second 2 transmission intervals).

Further, when the voltage of a battery (not shown) mounted on the vehicle 50 becomes lower than a predetermined value, the first transmission interval of the first advertising packet is set shorter than the second transmission interval of the second advertising packet. is desirable. That is, the first transmission interval of the first advertising packet is made shorter than before the battery voltage drops. Notification omissions can be reduced by shortening the first transmission interval of the first advertising packet that notifies of urgency. Further, when the battery voltage becomes lower than a predetermined value, the transmission of the second advertising packet may be stopped, and at the same time, the second advertising packet may be thinned out. It should be noted that stopping the transmission of the second advertising packet also means making the transmission interval infinite. Also, the battery may be a vehicle drive battery mounted on the vehicle 50 or a button battery in the vehicle ECU 10 .

Also, when the battery voltage becomes lower than a predetermined value, first, only the second advertising packet is thinned out, and when the battery voltage further drops after that, the first advertising packet is thinned out, and after that, the battery voltage further drops. If so, the transmission of the second advertising packet may be stopped in this order.

Also, in transmitting the first advertising packet, it is desirable to make the electric field intensity of the radio wave for transmitting the packet greater than the electric field intensity of the radio wave for transmitting the second advertising packet.

In this way, by increasing the number of transmissions of the first advertising packet, shortening the transmission interval, or increasing the electric field strength of the radio wave, it is possible to make the notification more reliable in an emergency. . Also, by thinning out the second advertising packets or stopping transmission, power can be saved.

3 and 4 are diagrams showing output waveforms of the first advertising packet and the second advertising packet. In FIG. 3 , when the communication between the vehicle ECU 10 and the vehicle user terminal 11 is disconnected while the communication is established by Bluetooth, the vehicle ECU 10 starts transmitting a second advertising packet (normal advertisement). Normal advertisements are sent at predetermined intervals, and are in a connection wait state. If an abnormality such as theft occurs in the vehicle 50 in this state, the transmission of the first advertising packet (emergency advertisement) is started from that time. The transmission interval of urgent advertisement is shorter than the transmission interval of normal advertisement, and is performed within the transmission interval of normal advertisement.

Next, in FIG. 4, when a drop in the battery voltage of the battery (not shown) of the vehicle 50 is detected during occurrence of an abnormality, normal advertising is thinned out. After that, when the battery voltage drops further, the normal advertisement becomes a transmission stop state, and the emergency advertisement is thinned out.

FIG. 5 is a block diagram showing a schematic configuration of the information sharing user terminal 12. As shown in FIG. In the figure, the information sharing user terminal 12 acts as an intermediary for transmitting an emergency notification transmitted from the vehicle ECU 10 to the vehicle user terminal 11 when an abnormality including theft occurs in the vehicle 50 . The information sharing user terminal 12 includes a GPS receiver (first positional information detection circuit) 121, an antenna 122, a clock (first clock) 123, a BT radio transmission/reception unit 124, a telemath transmission/reception unit 125, antennas 126 and 129, and an advertisement determination unit. 127 and a control unit 128 .

The GPS receiver 121 receives positioning signals transmitted from GPS satellites and outputs first latitude and longitude. An antenna 122 for GPS reception is connected to the GPS receiver 121 . Clock 123 outputs a first time indicating the current date and time. The BT radio transmission/reception unit 124 performs radio communication conforming to the Bluetooth standard. An antenna 126 for Bluetooth communication is connected to the BT radio transmission/reception unit 124 .

The BT radio transmission/reception unit 124 receives the Bluetooth advertising packet via the antenna 126 . The BT radio transmission/reception unit 124 outputs the received advertising packet to the control unit 128 . The telematics transmitting/receiving unit 125 performs cellular wireless communication. An antenna 129 for cellular communication is connected to the telematics transmission/reception unit 125 . Advertisement determination section 127 determines whether the Bluetooth advertising packet received by BT radio transmission/reception section 124 is normal advertisement or emergency advertisement, and outputs the result to control section 128 .

The control unit 128 controls each unit of the apparatus, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. The ROM also stores an application for sharing vehicle information. GPS receiver 121 , clock 123 , BT radio transmitter/receiver 124 , telematics transmitter/receiver 125 , and advertisement determination unit 127 operate under the control of controller 128 . Note that the BT radio transmission/reception unit 124 and the antenna 126 correspond to the second antenna. Also, the telematics transmitting/receiving unit 125 and the antenna 129 correspond to the third antenna. Also, the information-sharing user terminal 12 has one each of the antennas 126 and 129, but may have a plurality of each.

The control unit 128 adds the first latitude/longitude and the first time to the advertising packet received by the BT radio transmitting/receiving unit 124 , and transmits the packet from the telematics transmitting/receiving unit 125 to the telematics base station 15 via the antenna 129 . If the Bluetooth advertising packet received by the BT radio transmission/reception unit 124 is the first advertising packet, the packet contains emergency information, and if it is the second advertising packet, the emergency information is contained. do not have. If the advertising packet received by the BT radio transmitting/receiving unit 124 contains the second latitude/longitude and the second time, the information is also transmitted to the telematics base station 15 .

FIG. 6 is a block diagram showing a schematic configuration of the bicycle parking lot Bluetooth unit 13. As shown in FIG. In the figure, the bicycle parking lot Bluetooth unit 13 includes a BT radio transmission/reception section 131 , an antenna 132 , a network communication section 133 , an advertisement determination section 134 and a control section 135 . The BT radio transmission/reception unit 131 performs radio communication conforming to the Bluetooth standard. An antenna 132 for Bluetooth communication is connected to the BT radio transmission/reception unit 131 .

The network communication unit 133 connects to the cloud 53 and communicates with the server 14 . The advertising determining unit 134 determines whether the Bluetooth advertising packet received by the BT radio transmitting/receiving unit 131 is normal advertising or emergency advertising, and outputs the result. In this case, if the Bluetooth advertising packet received by the BT radio transmitting/receiving unit 131 is the first advertising packet, it is urgent advertising, and if it is the second advertising packet, it is normal advertising.

The control unit 135 controls each unit of the apparatus, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. The BT radio transmission/reception unit 131 , the network communication unit 133 and the advertisement determination unit 134 operate under the control of the control unit 135 . If the advertising packet received by the BT radio transmission/reception unit 131 is the first advertising packet from the determination result of the advertisement determination unit 134, the control unit 135 transmits the identification information and the emergency information of the vehicle 50 from the network communication unit 133. The packet is transmitted to the server 14 via the cloud 53 , and if it is the second advertising packet, the identification information of the vehicle 50 is transmitted from the network communication unit 133 to the server 14 via the cloud 53 . If the advertising packet contains the second latitude and longitude and the second time, the information is also transmitted to the server 14 . Moreover, although the bicycle parking lot Bluetooth unit 13 has one antenna 132, it may have a plurality of antennas.

FIG. 7 is a block diagram showing a schematic configuration of the server 14. As shown in FIG. In the figure, the server 14 includes a network communication section 141 , a notification information determination section 142 and a control section 143 . The network communication unit 141 connects to the cloud 53 and communicates with the vehicle user terminal 11 . The notification information determination unit 142 determines whether the information received by the network communication unit 141 is a normal notification or an emergency notification. If the information received by the network communication unit 141 is the identification information of the vehicle 50 and the emergency information, the emergency is determined, and if there is no emergency information of the vehicle 50, the normal notification is determined.

The control unit 143 controls each unit of the device, and includes a CPU (not shown), a ROM storing a program for operating the CPU, a RAM used in the operation of the CPU, and a hard disk for storing data. and a large-capacity storage device (not shown). The network communication unit 141 and notification information determination unit 142 operate under the control of the control unit 143 .

When the information of the vehicle 50 is received by the network communication unit 141, the control unit 143 outputs the information to the notification information determination unit 142 and stores the information in a storage device (not shown). Here, if the information received by the network communication unit 141 is from the information sharing user terminal 12, in addition to the identification information and emergency information, the first and second latitudes and longitudes and the first and second times are remembered. Also, if the information received by the network communication unit 141 is from the bicycle parking lot Bluetooth unit 13, the second latitude and longitude and the second time are stored in addition to the identification information and the emergency information. Upon acquiring the information output from the control unit 143 , the notification information determination unit 142 determines whether the information is a normal notification or an emergency notification, and outputs the result to the control unit 143 . In the case of the identification information of the vehicle 50 and the emergency information, the control unit 143 determines that an emergency is required, and notifies the vehicle user terminal 11 of the emergency. give notice. Although WiFi communication is used for notification from the server 14 to the vehicle user terminal 11, cellular communication may be used.

Next, the advertising packet of Bluetooth will be described.
The transmission information of emergency advertising uses AD Type: 0xFF Manufacturer Specific parameter of advertisement data defined by Bluetooth SIG.

FIG. 8 is a diagram showing the packet structure of LE Uncoded PHYs. In the figure, the AD Type and AD Data of the PDU Payload in the packet structure are used for the urgent advertising transmission information. That is, a Manufacturer Specific parameter of AD Type: 0xFF of advertisement data defined by Bluetooth SIG is used.

FIG. 9 is a diagram showing the data structure of AD Type: 0xFF. A 2-byte Company Identifier Code is defined for AD Type: 0xFF shown in the figure, and the following data can be defined uniquely by the vendor. In the wireless communication system 1 of the present embodiment, emergency advertising information composed of "emergency type" and "occurrence date and time" is defined. The "emergency type" includes, for example, 0x00: no abnormality, 0x01: a single impact on the vehicle was detected, 0x02: multiple impacts on the vehicle were detected, 0x03: tilt of the vehicle was detected, 0x04: glove box. was opened, 0x05: Acceleration was detected in the vehicle (there is a risk of being transported), 0x06: IG = ON without authentication, 0x07: Starter was started without authentication, 0x08: No authentication Define that the wheel speed is detected in .

When the unauthorized use detection unit 105 of the vehicle ECU 10 detects that an abnormality has occurred in the vehicle 50, it transmits emergency advertising information in which the type of emergency and the date and time of occurrence are set according to the level of the abnormality. The advertising information is also combined with a vendor-specific UUID predefined for emergency notification devices, and the information sharing user terminal 12 and the bicycle parking lot Bluetooth unit 13, which are notification devices, are devices (vehicle ECU 10) that support emergency notifications based on the UUID. Determine whether the

The information sharing user terminal 12 or the bicycle parking lot Bluetooth unit 13 that receives the emergency advertising information attaches the date and time of reception, location information, and an ID (for example, Bluetooth MAC address) specifying the vehicle 50 to the server 14 .

FIG. 10 is a diagram showing an example of server notification information. As shown in the figure, the server notification information consists of "type" and "content". The "type" is "notification device ID", "receipt date and time", "vehicle ID", "location information", "emergency type", and "occurrence date and time". The “notification device ID” is the ID of the information sharing user terminal 12 and the ID of the bicycle parking lot Bluetooth unit 13 . The “receipt date and time” is the date and time when the notification device (the information sharing user terminal 12, the bicycle parking lot Bluetooth unit 13) received the emergency advertising information. "Vehicle ID" is the Bluetooth MAC address used when vehicle 50 (vehicle ECU 10) notifies. "Position information" is GPS position information possessed by the notification device. The “emergency type” and “occurrence date and time” are transmitted from the vehicle ECU 10 .

The server 14 confirms that the "notification device ID" and "vehicle ID" of the received server notification information are IDs registered in advance, and notifies the user.

FIG. 11 is a diagram showing an example of user notification information. As shown in the figure, the user notification information consists of "type" and "content". The "type" is "receipt date and time", "location information", "emergency type", and "occurrence date and time". The “receipt date and time” is the date and time when the notification device (the information sharing user terminal 12, the bicycle parking lot Bluetooth unit 13) received the emergency advertising information. "Position information" is GPS position information possessed by the notification device. The “emergency type” and “occurrence date and time” are transmitted from the vehicle ECU 10 .

FIG. 12 is a diagram showing an outline of the operation of the vehicle ECU 10. As shown in FIG. In the figure, vehicle ECU 10 transitions between an unauthenticated state and an authenticated state according to whether IGKEY switch 502 is turned on or off. That is, when the IGKEY switch 502 is turned from ON to OFF, the state transitions to the unauthenticated state (security ON), and when the IGKEY switch 502 is turned from OFF to ON, the state transitions to the authenticated state (security OFF). When the vehicle ECU 10 cannot be connected to the vehicle user terminal 11 via Bluetooth in an unauthenticated state (security ON), the vehicle ECU 10 is in the process of abnormality monitoring. That is, when the vehicle user terminal 11 moves out of the Bluetooth communication range of the vehicle ECU 10, the Bluetooth communication connection between the vehicle ECU 10 and the vehicle user terminal 11 is disconnected. The vehicle ECU 10 normally transmits Advertise during abnormality monitoring.

When the vehicle ECU 10 detects an abnormality during abnormality monitoring, the vehicle ECU 10 issues an emergency notification. Send emergency advertisements during anomaly detection. When the vehicle ECU 10 detects the occurrence of an abnormality again after issuing an emergency notification, the vehicle ECU 10 issues an emergency notification and transmits an emergency advertisement. At this time, if the content of the abnormality is different from the previous time, the emergency type is updated. For example, if the last time was "single impact to the vehicle" and the current time is "the glove box was opened", the emergency type changes, so the update is performed.

FIG. 13 is a sequence diagram for explaining the operations of the vehicle ECU 10, the vehicle user terminal 11, the information sharing user terminal 12, and the bicycle parking lot Bluetooth unit 13 during normal times and emergencies. In the figure, when the vehicle user terminal 11 is within the Bluetooth communication range of the vehicle ECU 10, Bluetooth connection is established between them. In this state, when the vehicle user 51 moves away from the vehicle 50 and the vehicle user terminal 11 leaves the Bluetooth communication range of the vehicle ECU 10, the Bluetooth connection between them is cut off.

When the Bluetooth connection with the vehicle user terminal 11 is disconnected, the vehicle ECU 10 starts transmitting a second advertising packet (normal advertisement). While the second Advertising packet is being transmitted, the information sharing user terminal 12 and the bicycle parking lot Bluetooth unit 13, which are notification devices, ignore the information. In this state, when an abnormality occurs in the vehicle 50, the vehicle ECU 10 starts transmitting a first advertising packet (emergency advertising). When the information sharing user terminal 12 and the bicycle parking lot Bluetooth unit 13 receive the first advertising packet, they respond to the vehicle ECU 10 and send a server notification to the server 14 . The server 14 that has received the server notification executes the user notification and notifies the vehicle user terminal 11 that an abnormality has occurred in the vehicle 50 .

FIG. 14 is a flowchart for explaining the operation of vehicle ECU 10 of vehicle 50 regarding an emergency notification. Since the operation of the vehicle 50 is the operation of the vehicle ECU 10, the subject is not the vehicle 50, but the vehicle ECU 10. In the figure, the vehicle ECU 10 first determines whether or not the IGKEY switch 502 has been turned on (step S10). (step S11). That is, since the user 51 of the vehicle 50 has started using the vehicle 50, the security is released. The security OFF state continues until the IGKEY switch 502 is turned off. When the vehicle ECU 10 determines that the IGKEY switch 502 is not turned on (when "NO" is determined in step S10), the vehicle ECU 10 transitions to the security ON state (step S12). That is, since the user 51 of the vehicle 50 has stopped using the vehicle 50, security is started.

After transitioning to the security ON state, the vehicle ECU 10 first determines whether or not Bluetooth connection has been made with the vehicle user terminal 11 (step S13). The state transitions to the connected state (step S14). After transitioning to the Bluetooth connection state with the vehicle user terminal 11, the vehicle ECU 10 determines whether or not an abnormality has been detected (step S15). When the vehicle ECU 10 determines that no abnormality has been detected (when it determines "NO" in step S15), it determines whether or not the IGKEY switch 502 is turned on (step S16). When the vehicle ECU 10 determines that the IGKEY switch 502 is not turned on (when it determines "NO" in step S16), the vehicle ECU 10 returns to the process of step S13 and determines whether or not Bluetooth connection with the vehicle user terminal 11 is established. On the other hand, when it is determined that the IGKEY switch 502 has been turned on (when it is determined "YES" in step S16), the process returns to step S11 and transitions to the security OFF state.

When the vehicle ECU 10 determines in step S15 that an abnormality has occurred (when determined as "YES" in step S15), the vehicle ECU 10 notifies the connected terminal (i.e., the vehicle user terminal 11) of the abnormality detection ( step S17). After notifying the connected terminal of the abnormality detection, it is determined whether or not notification completion has been received (step S18). Return to the process and notify of anomaly detection. On the other hand, if it is determined that the notification completion has been received ("YES" in step S18), the process returns to step S16 to determine whether the IGKEY switch 502 has been turned on.

When the vehicle ECU 10 determines in step S13 that the vehicle user terminal 11 is not Bluetooth-connected (determined as "NO" in step S13), the vehicle ECU 10 transitions to the Bluetooth disconnection state (step S19). After the vehicle user terminal 11 and Bluetooth are disconnected, the vehicle ECU 10 determines whether or not an abnormality has been detected (step S20).

When the vehicle ECU 10 determines that no abnormality has been detected (determined as "NO" in step S20), the vehicle ECU 10 transmits normal advertising (second advertising packet) (step S21). At this time, the transmission interval is lengthened and the transmission output is decreased. The vehicle ECU 10 stops transmission of emergency advertisement (first advertising packet) by starting transmission of normal advertisement (step S22). Here, when the determination of step S20 is the first time, even if the process of step S22 is performed, it does not make sense because the emergency advertisement is not transmitted before that, but the determination of step S20 is the second time. Since the transmission of emergency advertisement may have been performed before that time, if determination of step S20 becomes "NO", transmission of emergency advertisement will be stopped after normal advertisement transmission is started.

After performing the processing of step S22, the vehicle ECU 10 returns to step S16 and determines whether or not the IGKEY switch 502 is turned on. If the vehicle ECU 10 determines in step S20 that an abnormality has occurred (if determined as "YES" in step S20), the vehicle ECU 10 transmits an emergency advertisement (step S23). At this time, the transmission interval is shortened and the transmission output is increased.

After starting transmission of the emergency advertisement, the vehicle ECU 10 determines whether or not notification completion has been received (step S24). When the vehicle ECU 10 determines that the completion of notification has been received (when it determines "YES" in step S24), it returns to the process of step S16 and determines whether or not the IGKEY switch 502 is turned on. On the other hand, when the vehicle ECU 10 determines that the notification completion has not been received (when it determines "NO" in step S24), it determines whether or not a new abnormality has occurred (step S25). When the vehicle ECU 10 determines that no new abnormality has occurred (when it determines "NO" in step S25), the vehicle ECU 10 returns to the process of step S23 and transmits an emergency advertisement. On the other hand, if the vehicle ECU 10 determines that a new abnormality has occurred (determined as "YES" in step S25), the vehicle ECU 10 updates the emergency type (step S26). And it returns to the process of step S23 and transmits emergency advertisement with the updated emergency classification.

FIG. 15 is a flowchart for explaining the operation of the information sharing user terminal 12 at the time of emergency notification. Although the operation of the information sharing user terminal 12 is the operation of the control unit 128, the subject is not the control unit 128, but the information sharing user terminal 12. FIG. In the figure, the information sharing user terminal 12 first determines whether or not an advertising packet has been received (step S30). case), this determination is repeated until an Advertising packet is received. When the information sharing user terminal 12 determines that it has received an Advertising packet (when it determines "YES" in step S30), it determines whether or not the received advertising packet is the first advertising packet (emergency advertising) (step S31). ). When the information-sharing user terminal 12 determines that the received advertising packet is not the first advertising packet (when it determines "NO" in step S31), it repeats this determination until it receives the first advertising packet.

On the other hand, when the information sharing user terminal 12 determines that the received advertising packet is the first advertising packet (when it determines "YES" in step S31), it determines whether or not the emergency advertising type is set. (step S32). If the information sharing user terminal 12 determines that the urgent advertisement type is not set (determines "NO" in step S32), it repeats this determination until the urgent advertisement type is set. On the other hand, if the information-sharing user terminal 12 determines that the urgent advertisement type is set (determines "YES" in step S32), it notifies the server 14 of the urgent advertisement (step S33).

FIG. 16 is a flow chart for explaining the operation of the server 14 at the time of emergency notification. The operation of the server 14 is the operation of the control unit 143, but the subject is not the control unit 143, but the server 14. FIG. In the figure, the server 14 first determines whether or not a server notification has been received (step S40). This determination is repeated until received. When the server 14 determines that it has received the server notification (when it determines "YES" in step S40), it determines whether or not the notification device ID has been registered (step S41).

When the server 14 determines that the notification device ID has not been registered (when it determines "NO" in step S41), it returns to the process of step S40. On the other hand, when the server 14 determines that the notification device ID has been registered (when it determines "YES" in step S41), it determines whether the vehicle ID has been registered (step S42). When the server 14 determines that the vehicle ID has not been registered (when it determines "NO" in step S42), it returns to the process of step S40. On the other hand, when the server 14 determines that the vehicle ID has been registered (when it determines "YES" in step S42), it notifies the user (step S43), and returns to the process of step S40.

FIG. 17 is a diagram showing how the vehicle 50 is tracked when it is stolen. In the figure, reference numeral 298 indicates the communication range of normal advertisements transmitted from the vehicle ECU 10 of the vehicle 50 , and reference numeral 299 indicates the communication range of emergency advertisements transmitted from the vehicle ECU 10 of the vehicle 50 . When an abnormality occurs in the vehicle 50, emergency advertising (first advertising packet) is transmitted. When theft occurs, the bicycle parking lot Bluetooth unit 13 is within the emergency advertising communication range 299, so the first advertising packet is received by the bicycle parking lot Bluetooth unit 13 and transmitted to the server 14 via a wired line.

Since the installation position of the bicycle parking lot Bluetooth unit 13 is known, the stolen position can be acquired. When the transportation of the vehicle 50 is started by a truck or the like, and the information sharing user terminal 12 is present during transportation, the first advertising packet is received by the information sharing user terminal 12, and the server 14 is sent to the server 14 by cellular communication or WiFi communication. sent to. Thereafter, similarly, the first advertising packet is transmitted to the server 14 by cellular communication or WiFi communication each time it is received by the information sharing user terminal 12 . The first advertising packet received by the server 14 is transmitted to the vehicle user terminal 11 by cellular communication or WiFi communication.

As described above, in the wireless communication system 1 of the first embodiment, when the unauthorized use detection unit 105 provided in the vehicle 50 detects that an abnormality has occurred in the vehicle 50, the emergency information is added from the vehicle 50. 1 is transmitted to the information sharing user terminal 12, and the information sharing user terminal 12 notifies the vehicle user terminal 11 of the abnormality of the vehicle 50 via the server 14, so that the telematics service is used in the vehicle 50. The abnormality of the vehicle 50 can be notified to the vehicle user terminal 11 without doing so. Also, since there is no need to have a communication line or GPS function for using the telematics service, cost reduction can be achieved. That is, it is possible to notify an abnormality of the vehicle 50 including theft at low cost and low power consumption, and is suitable for a two-wheeled vehicle such as a scooter.

In the wireless communication system 1 of the first embodiment, the Bluetooth advertising packet is used to transmit the identification information of the vehicle 50 and the emergency information, but other types of packets may be used.
Also, the identification information of the vehicle 50, the emergency information, and the like may be transmitted using a method other than Bluetooth.

(Second embodiment)
Next, a wireless communication system according to the second embodiment will be described.
When an abnormality occurs in a vehicle, the wireless communication system 2 of the second embodiment transmits a first advertising packet to which emergency information is added from the vehicle, thereby detecting other vehicles (which can detect an abnormality) in the vicinity. The information sharing user terminal (smartphone) paired with the other vehicle ECU notifies the vehicle user terminal of the vehicle abnormality and the current location via the server. In the method of directly notifying the information sharing user terminal from the vehicle ECU, the abnormality cannot be notified unless the information sharing user terminal is near the vehicle ECU. Notification is delayed.

The wireless communication system 2 of the second embodiment can increase the chances of notifying the vehicle of an abnormality, so that the notification delay to the vehicle user can be minimized. In addition, by increasing the number of other vehicle ECUs capable of detecting the same anomalies as the vehicle ECU, the area where theft can be detected expands, and even if the vehicle is taken from a bicycle parking lot where there are no information sharing user terminals nearby, the theft can be quickly detected. be able to. By using the information sharing user terminal, connection to the server does not require the vehicle ECU to have the function of using the telematics service. and is suitable for two-wheeled vehicles such as scooters.

A wireless communication system according to the second embodiment will be described below with reference to FIGS. 18 to 28. FIG. FIG. 18 is a diagram showing a usage pattern of the wireless communication system 2 of the second embodiment. In the figure, the same reference numerals are given to elements that are common to the components of the wireless communication system 1 of the first embodiment described above. In the figure, a radio communication system 2 of the second embodiment includes a first vehicle ECU 10A mounted on a first vehicle 50A, a second vehicle ECU (radio communication device) 10B mounted on a second vehicle 50B, and a second vehicle ECU 10B mounted on a second vehicle 50B. A vehicle user terminal (wireless communication terminal, smartphone) 11 possessed by a user 51 of the first vehicle 50A and an information sharing user terminal (wireless communication terminal, smartphone) possessed by a user 52 who shares information with the user 51 of the first vehicle 50A. 12B, a server 14B connected to the cloud 53 by wire, and a telematics base station (mobile base station) 15 connected to the cloud 53 by wire. Identification information is assigned to each of the first vehicle ECU 10A and the second vehicle ECU 10B. These pieces of identification information can be regarded as the identification information of the first vehicle 50A and the identification information of the second vehicle 50B. Further, these pieces of identification information are information uniquely determined by each of the first vehicle ECU 10A and the second vehicle ECU 10B, and may be MAC addresses, for example. Although FIG. 18 shows the second vehicle 50B as another vehicle other than the first vehicle 50A, it is assumed that there is at least one vehicle equipped with the second vehicle ECU 10B similar to the second vehicle 50B. do.

The first vehicle ECU 10A, the second vehicle ECU 10B, the vehicle user terminal 11, and the information sharing user terminal 12B each have a Bluetooth (registered trademark) communication function. Between the first vehicle ECU 10A and the second vehicle ECU 10B, between the second vehicle ECU 10B and the information sharing user terminal 12B, between the first vehicle ECU 10A and the vehicle user terminal 11, and between the second vehicle ECU 10B and the vehicle user terminal 11. Bluetooth communication is possible in each of these. The vehicle user terminal 11 and the information sharing user terminal 12B have a cellular communication function or a WiFi (registered trademark) communication function in addition to the Bluetooth communication function. Although the wireless communication system 2 of the second embodiment is applied to a two-wheeled vehicle (motorcycle) 50A, it can of course be applied to a four-wheeled vehicle.

Next, configurations of the first and second vehicle ECUs 10A and 10B, the vehicle user terminal 11, the information sharing user terminal 12B and the server 14B of the wireless communication system 2 of the second embodiment will be described.

FIG. 19 is a block diagram showing a schematic configuration of part of the first vehicle 50A and a schematic configuration of the first vehicle ECU 10A. In the figure, the same reference numerals are given to elements that are common to the components of the vehicle ECU 10 shown in FIG. The first vehicle ECU 10A includes a switch detection unit 101, an IG authentication determination unit 102, a BT radio transmission/reception unit 103, an unauthorized use detection unit (unauthorized use detection circuit) 105, a vehicle speed detection unit 106, a control unit 108A, and an antenna 110. Note that the BT radio transmission/reception unit 103 and the antenna 110 correspond to the first antenna.

The control unit 108A controls each unit of the device, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. IG authentication determination section 102, BT radio transmission/reception section 103, unauthorized use detection section 105, and vehicle speed detection section 106 operate under the control of control section 108A.

The control unit 108A performs emergency notification processing to the vehicle user terminal 11 of the vehicle user 51 when an abnormality including theft occurs in the first vehicle 50A. That is, when the unauthorized use detection unit 105 detects unauthorized use (that is, when an abnormality including theft occurs in the first vehicle 50A), the control unit 108A detects the vehicle from the BT wireless transmission/reception unit 103 via the antenna 110. 50A identification information and a Bluetooth advertising packet containing emergency information. Various controls related to transmission such as the number of transmissions of advertising packets, transmission intervals, electric field intensity of transmission radio waves, etc. are the same as the control in the vehicle ECU 10 shown in FIG. 2 and have been described with reference to FIGS.

FIG. 20 is a block diagram showing a schematic configuration of part of the second vehicle 50B and a schematic configuration of the second vehicle ECU 10B. In the figure, the same reference numerals are given to elements that are common to the components of the vehicle ECU 10 shown in FIG. The second vehicle ECU 10B includes a switch detection unit 101, an IG authentication determination unit 102, a BT radio transmission/reception unit 103, a GPS reception unit 104, an unauthorized use detection unit 105, a vehicle speed detection unit 106, a clock (second clock) 107, and a control unit 108B. , a memory (memory circuit) 109 and an antenna 110 . GPS receiver 104 acquires the second latitude and longitude. Clock 107 acquires the second time. The memory 109 stores at least identification information of the first vehicle 50A.

The control unit 108B controls each unit of the device, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. IG authentication determination section 102, BT radio transmission/reception section 103, GPS reception section 104, unauthorized use detection section 105, vehicle speed detection section 106, clock 107 and memory 109 operate under the control of control section 108B.

When the unauthorized use detection unit 105 detects unauthorized use (that is, when an abnormality including theft occurs in the second vehicle 50B), the control unit 108B transmits the second vehicle 50B from the BT wireless transmission/reception unit 103 via the antenna 110. A Bluetooth advertising packet containing 50B identification information and emergency information is transmitted. Note that the Bluetooth advertising packet containing the emergency information is the first advertising packet. The transmission control of the advertising packet by the control unit 108B is the same as the transmission control by the vehicle ECU 10 shown in FIG. 2, and has been described with reference to FIGS.

Further, when the BT radio transmission/reception unit 103 receives a Bluetooth advertising packet containing the identification information and the emergency information of the first vehicle 50A via the antenna 110, the control unit 108B receives the identification information and the emergency information of the first vehicle 50A. , a second time, and a second latitude and longitude are transmitted via the antenna 110 . The predetermined packet may contain at least the identification information of the first vehicle 50A and the emergency information. A predetermined packet is a packet that is transmitted without specifying a communication partner. A predetermined packet is assumed to be a third advertising packet (normal advertisement, corresponding to the second advertising packet). A third advertising packet is transmitted two or more times.

FIG. 21 is a block diagram showing a schematic configuration of the information sharing user terminal 12B. In the figure, the same reference numerals are given to elements that are common to the constituent elements of the information sharing user terminal 12 shown in FIG. The information sharing user terminal 12B includes a GPS receiver (first position information detection circuit) 121, a BT radio transmitter/receiver 124, a telematics transmitter/receiver 125, an advertisement determination unit 127, a clock (first clock) 123, and antennas 122, 126, and 129. Prepare. GPS receiver 121 detects the first latitude and longitude. Clock 123 acquires the first time. The BT radio transmission/reception unit 124 is capable of radio communication with the second vehicle 50B in compliance with the Bluetooth standard. Antenna 129 is available for cellular communications. The BT radio transceiver 124 and the antenna 126 correspond to the third antenna. Also, the telematics transmitting/receiving unit 125 and the antenna 129 correspond to the fourth antenna.

The control unit 128B controls each unit of the device, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. The GPS receiver 121, the clock 123, the BT radio transmitter/receiver 124, the telematics transmitter/receiver 125, and the advertisement determination unit 127 operate under the control of the controller 128B.

When the BT radio transmitting/receiving unit 124 receives a predetermined Bluetooth packet containing the identification information of the first vehicle 50A, the emergency information, the second time, and the second latitude/longitude via the antenna 126, the control unit 128B performs telematics transmission/reception. The identification information, the emergency information, the second time, and the second latitude and longitude of the first vehicle 50A are transmitted from the unit 125 via the antenna 129 . This transmission should include at least the identification information of the first vehicle 50A and the emergency information.

FIG. 22 is a diagram showing server notification information transmitted from the telematics transmitting/receiving unit 125 of the information sharing user terminal 12B to the server 14B. As shown in the figure, the server notification information generated by the telematics transmitting/receiving unit 125 is based on the "reliability of position information ” is added. The reliability of this position information is the number and time of control (engine run) after the first data acquisition. "Engine run" is control for starting the engine. The "time" is the time required from the start of the engine to the notification of the abnormality detection to the connected terminal.

FIG. 23 is a block diagram showing a schematic configuration of the server 14B. In the figure, the same reference numerals are given to the elements that are common to the constituent elements of the server 14 shown in FIG. The server 14B has a network communication section 141, a notification information determination section 142 and a control section 143B. FIG. 24 is a diagram showing user notification information transmitted from the network communication unit 141 of the server 14B to the vehicle user terminal 11. As shown in FIG. As shown in the figure, the user notification information is obtained by adding the "reliability of position information" to the user notification information of the wireless communication system 1 of the first embodiment. The reliability of this position information is the number and time of control (control for starting the engine, engine run) after the data is first acquired.

FIG. 25 is a sequence diagram for explaining the operations of the first vehicle ECU 10A, the second vehicle ECU 10B, the vehicle user terminal 11, the information sharing user terminal 12B, and the server 14B during normal times and emergencies. In the figure, when the vehicle user terminal 11 is within the Bluetooth communication range of the first vehicle ECU 10A, Bluetooth connection is established between them. In this state, when the vehicle user 51 moves away from the first vehicle 50A and the vehicle user terminal 11 leaves the Bluetooth communication range of the first vehicle ECU 10A, the Bluetooth connection between them is cut off.

When the Bluetooth connection with the vehicle user terminal 11 is disconnected, the first vehicle ECU 10A starts transmitting the third advertising packet. The second vehicle ECU 10B ignores the information while the third advertising packet is being transmitted. If an abnormality occurs in the first vehicle 50A in this state, the first vehicle ECU 10A starts transmitting a first advertising packet (emergency advertising).

When the second vehicle ECU 10B receives the first advertising packet, the second vehicle ECU 10B responds to the reception of the first vehicle ECU 10A, and further establishes a Bluetooth connection with the information sharing user terminal 12B. The information sharing user terminal 12B connected to the second vehicle ECU 10B via Bluetooth notifies the server 14B. The server 14B that has received the server notification executes the user notification and notifies the vehicle user terminal 11 that an abnormality has occurred in the first vehicle 50A.

Next, operations related to emergency notification of the first vehicle ECU 10A and the second vehicle ECU 10B will be described. However, the emergency notification operation of the first vehicle ECU 10A is the same as the emergency notification operation of the vehicle ECU 10 of the wireless communication system 1 of the first embodiment described above. Only the operation of is explained.

FIG. 26 is a flowchart for explaining the operation of the second vehicle ECU 10B regarding emergency notification. This processing includes processing for adding the reliability of location information to each of the server notification information shown in FIG. 22 and the user notification information shown in FIG. The control unit 108B is provided with a counter (not shown) for counting the number of times the engine is started and a counter (not shown) for measuring the time after the engine is started. Although the operation of the second vehicle 50B is the operation of the control unit 108B, the subject is not the control unit 108B, but the second vehicle ECU 10B.

In FIG. 26 , the second vehicle ECU 10B first determines whether or not an emergency advertisement has been received (step S50). This processing is repeated until it is determined that Advertise has been received. When the second vehicle ECU 10B determines that it has received the emergency advertisement (when it determines "YES" in step S50), it holds the emergency information (step S51).

After holding the emergency information, the second vehicle ECU 10B determines whether or not the engine of the vehicle 50B is being started (step S52). When the second vehicle ECU 10B determines that the engine is starting (when it determines "YES" in step S52), it determines whether or not Bluetooth connection has been established with the notification device, that is, the information sharing user terminal 12B (step S53). When the second vehicle ECU 10B determines that the information sharing user terminal 12B and the Bluetooth connection are not established (when it is determined as "NO" in step S53), the second vehicle ECU 10B returns to step S52 and determines that the information sharing user terminal 12B and the Bluetooth connection are established. If so (if "YES" is determined in step S53), the Bluetooth-connected terminal, that is, the information sharing user terminal 12B is notified of the abnormality detection (step S54). At this time, it is assumed that the number of times the engine is started is "0" and the time after the engine is started is "0". That is, since the engine is being started, the number of times the engine is started is "0". After notifying the information sharing user terminal 12B of the abnormality detection, the second vehicle ECU 10B returns to the process of step S50.

When the second vehicle ECU 10B determines in the determination in step S52 that the engine is not vibrating (when it determines "NO" in step S52), the second vehicle ECU 10B determines whether or not Bluetooth connection has been established with the notification device, that is, the information sharing user terminal 12B. (Step S55). When the second vehicle ECU 10B determines that the information sharing user terminal 12B and the Bluetooth connection have been established (when determined as "YES" in step S55), the second vehicle ECU 10B determines whether or not the engine start control of the vehicle 50B has been performed (step S56), and the engine starts. If it is determined that the control is not performed (if determined as "NO" in step S56), this process is repeated until the engine start control is performed.

When the second vehicle ECU 10B determines that the engine start control has been performed (when determined as "YES" in step S56), the second vehicle ECU 10B adds "1" to the number of engine starts (step S57). That is, when the engine is started while the engine is stopped, the number of times the engine is started becomes a value incremented by "1". Next, the second vehicle ECU 10B notifies the Bluetooth-connected terminal, that is, the information sharing user terminal 12B of the abnormality detection (step S58). At this time, it is assumed that the number of times the engine is started is "n" and the time after the engine is started is "0". After notifying the information sharing user terminal 12B of the abnormality detection, the second vehicle ECU 10B returns to the process of step S50.

If the second vehicle ECU 10B determines in step S55 that the Bluetooth connection is not established with the notification device, that is, the information sharing user terminal 12B (if determined as "NO" in step S55), whether or not the engine start control has been performed. When it is determined (step S59) and it is determined that the engine start control is not being performed (when it is determined as "NO" in step S59), the process returns to step S55. When the second vehicle ECU 10B determines in step S59 that engine start control has been performed (when determined as "YES" in step S59), the second vehicle ECU 10B adds "1" to the number of times the engine is started, and turns the engine start time counter "ON." ” (step S60).

After turning the engine start time counter to "ON" in step S60, the second vehicle ECU 10B determines whether or not Bluetooth connection has been established with the information sharing user terminal 12B (step S61). If it is determined that the Bluetooth connection has been made (if "YES" is determined in step S61), an abnormality detection is notified to the Bluetooth-connected terminal, that is, the information sharing user terminal 12B (step S64). At this time, the number of times the engine is started is "n", and the time after the engine is started is "n". After notifying the information sharing user terminal 12B of the abnormality detection, the second vehicle ECU 10B returns to the process of step S50.

When the second vehicle ECU 10B determines in step S61 that the notification device, ie, the information sharing user terminal 12B and the Bluetooth connection are not established (when it determines "NO" in step S61), it determines whether the engine is turned off ( step S62). When the second vehicle ECU 10B determines that the engine is not turned off (determined as "NO" in step S62), the process returns to step S61, and when it is determined that the engine is turned off (determined as "YES" in step S62). case), the engine start time counter is cleared (step S63), and the process returns to step S55.

Next, the operation of the information sharing user terminal 12B will be described. Note that the operation of the server 14B is the same as the operation of the server 14 of the wireless communication system 1 of the first embodiment described above, so description thereof will be omitted.

FIG. 27 is a flow chart for explaining the operation of the information sharing user terminal 12B. The operation of the information sharing user terminal 12B is the operation of the control unit 128B, but the subject is not the control unit 128B, but the information sharing user terminal 12B. In the figure, the information sharing user terminal 12B first determines whether or not Bluetooth connection has been established with the second vehicle ECU 10B (step S70). is determined), this process is repeated until Bluetooth connection is established with the second vehicle ECU 10B.

When the information sharing user terminal 12B determines that the second vehicle ECU 10B and the Bluetooth connection are established (when determined as "YES" in step S70), the information sharing user terminal 12B determines whether the second vehicle ECU 10B holds emergency advertisement information (step S71). When the information-sharing user terminal 12B determines that the second vehicle ECU 10B does not hold the emergency advertising information (when it determines "NO" in step S71), the information sharing user terminal 12B returns to step S70 and holds the emergency advertising information. When it determines with (when it determines with "YES" at step S71), this urgent advertisement information is notified to the server 14B (step S72). After notifying the server 14B of the urgent advertisement information, the process returns to step S70.

FIG. 28 is a diagram showing how the first vehicle 50A is tracked when it is stolen. In the figure, reference numeral 298 indicates the communication range of normal advertisements transmitted from the first vehicle ECU 10A of the first vehicle 50A, and reference numeral 299 indicates the communication range of emergency advertisements transmitted from the vehicle ECU 10A of the first vehicle 50A. showing. When an abnormality occurs in the first vehicle 50A, an emergency advertisement (first advertising packet) is transmitted from the vehicle ECU 10A. If other vehicles such as the second vehicle 50B-1 and the third vehicle 50B-2 exist within the communication range of the emergency advertisement when theft occurs, the emergency advertisement is received by these vehicles 50B-1 and 50B-2. and transmitted by Bluetooth. When the emergency advertisements transmitted from the second vehicle 50B-1 and the third vehicle 50B-2 are received by the information sharing user terminals 12B-1 and 12B-2, these terminals 12B-1 and 12B-2 , identification information of the first vehicle 50A, emergency information, and the like included in the emergency advertisement are transmitted by cellular communication. Since the current position is acquired by each of the second vehicle 50B-1 and the third vehicle 50B-2, the stolen position can be acquired.

When transportation of the first vehicle 50A is started by a truck or the like, and a new vehicle (which will be referred to as a fourth vehicle 50B-3) is present during transportation, the fourth vehicle 50B-3 receives the emergency advertisement. , Bluetooth. When the emergency advertisement transmitted from the fourth vehicle 50B-3 is received by a new information sharing user terminal (this is referred to as an information sharing user terminal 12B-3), the first vehicle 50A included in the emergency advertisement is then received. identification information, emergency information, etc. are transmitted by cellular communication. Since the current position is obtained by the fourth vehicle 50B-3, the position during transportation can be obtained.

After that, similarly, when a new vehicle (this will be referred to as a fifth vehicle 50B-4) exists in the middle of transportation of the first vehicle 50A, the emergency advertisement is received by this fifth vehicle 50B-4, and then the Bluetooth is sent by When the emergency advertisement transmitted from the fifth vehicle 50B-4 is received by a new information sharing user terminal (this is referred to as an information sharing user terminal 12B-4), the first vehicle 50A included in the emergency advertisement is then received. identification information, emergency information, etc. are transmitted by cellular communication. Since the current position is obtained by the fifth vehicle 50B-4, the position during transportation can be obtained.

The identification information, emergency information, and the like of the first vehicle 50A transmitted by cellular communication from each of the information sharing user terminals 12B-1 to 12B-4 are transmitted to the server 14B via a wired line, and are transmitted from the server 14B to the vehicle. It is transmitted to the vehicle user terminal 11 of 50A.

As described above, in the wireless communication system 2 of the second embodiment, when the unauthorized use detection unit 105 provided in the first vehicle 50A detects that an abnormality has occurred in the first vehicle 50A, the first vehicle 50A A first advertising packet to which emergency information is added is transmitted to notify the second vehicle 50B existing in the vicinity, and the vehicle user terminal is transmitted from the information sharing user terminal 12B paired with the second vehicle 50B via the server 14B. 11 of the abnormality of the first vehicle 50A, it is possible to notify the vehicle user terminal 11 of the abnormality of the first vehicle 50A without using the telematics service. In addition, since there is no need to have a communication line or GPS function for using the telematics service, cost increases can be minimized. In addition, since the chances of notifying the first vehicle 50A of the abnormality can be increased, the notification delay to the vehicle user can be minimized. In addition to the second vehicle 50B, by increasing the number of other vehicles capable of detecting the same abnormality as the first vehicle 50A, the area in which theft can be detected can be expanded. Theft can be detected at an early stage. That is, it is possible to notify an abnormality including theft of the first vehicle 50A at low cost and low power consumption, and is suitable for a two-wheeled vehicle such as a scooter.

(Third embodiment)
Next, a wireless communication system according to the third embodiment will be described.
In recent years, each driver who drives a car or motorcycle owns one smartphone, which is suitable for identifying the individual owner. Smartphones can communicate with the cloud server through mobile communication (4G (4th generation mobile communication standard) / LTE (Long Term Evolution) / 5G (5th generation mobile communication standard), etc.), so you need to enter your password periodically. It is possible to have the function of a vehicle key, such as performing authentication with the cloud server and forcibly disabling it from the cloud server. Even if a smartphone with such a function is stolen, it is possible to build a system that can permanently prevent anyone other than the authorized owner from using the vehicle key function. In other words, a theft detection means that prioritizes the authorized owner's smartphone as the authorized owner authentication means is useful.

The radio communication system 3 of the third embodiment will be described below with reference to FIGS. 29 to 43. FIG. The radio communication system 3 of the third embodiment includes a vehicle 50C and a vehicle ECU (radio communication device) 10C shown in FIG. 29, a smartphone (second radio communication terminal) 11C shown in FIG. The first wireless communication terminal) 16 is the basic configuration. Both the smartphone 11C and the electronic key 16 can be used as keys for the vehicle 50C equipped with the vehicle ECU 10C. The vehicle ECU 10C, the smartphone 11C, and the electronic key 16 each have a Bluetooth (registered trademark) communication function, and Bluetooth communication is possible between the smartphone 11C and the vehicle ECU 10C and between the electronic key 16 and the vehicle ECU 10C. It has become. In addition to the Bluetooth communication function, the smartphone 11C also has a cellular communication function or a WiFi (registered trademark) communication function. Identification information is given to the vehicle ECU 10C. This identification information can also be regarded as identification information of the vehicle 50C. This identification information is information that is uniquely determined by the vehicle ECU, and may be, for example, a MAC address. Electronic keys are also called Key FOBs (or simply FOBs).

The vehicle ECU 10C has a function of detecting vehicle theft and shifting to a vehicle theft mode when the smartphone 11C is operated without approaching the vehicle 50C for a certain period of time (for example, one week) (i.e., away from the vehicle). is doing. Although the wireless communication system 3 of the third embodiment is applied to a two-wheeled vehicle (motorcycle) 50C, it can of course be applied to a four-wheeled vehicle. Hereinafter, configurations of the vehicle ECU 10C, the smartphone 11C, and the electronic key 16 of the wireless communication system 3 of the third embodiment will be sequentially described.

FIG. 29 is a block diagram showing a schematic configuration of part of the vehicle 50C and a schematic configuration of the vehicle ECU 10C. In the same figure, the same reference numerals are given to elements that are common to the components of the vehicle ECU 10 (see FIG. 2) of the wireless communication system 1 of the first embodiment described above. 29, a vehicle ECU 10C of the radio communication system 3 of the third embodiment includes a switch detection section 101C, an IG authentication determination section 102, a BT radio transmission/reception section (first radio communication circuit) 103, an unauthorized use detection section 105, a vehicle speed detection It has a section 106, a control section 108C and an antenna 110. FIG. Although the vehicle ECU 10C has one antenna 110, it may have a plurality of antennas.

The switch detection unit 101C detects on/off of the glove box switch 501 and the IGKEY switch 502, and also detects on/off of a main switch (operation unit) 504 provided in the vehicle 50C. Main switch 504 is a switch for starting the engine of vehicle 50C. The BT radio transmission/reception unit (first radio communication circuit) 103 performs radio communication conforming to the Bluetooth standard (first radio system), as described above.

The control unit 108C controls each unit of the device, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. IG authentication determination section 102, BT radio transmission/reception section 103, unauthorized use detection section 105, and vehicle speed detection section 106 operate under the control of control section 108C. The control unit 108C notifies the smartphone 11C of the vehicle user 51 of emergency when an abnormality including theft occurs in the vehicle 50C. Note that the control unit 108C registers the smartphone 11C when communicating with the smartphone 11C. Details of the operation of the control unit 108C will be described later.

FIG. 30 is a block diagram showing a schematic configuration of the smartphone 11C. In the same figure, the same reference numerals are given to the same components as those of the information sharing user terminal (smartphone) 12 (see FIG. 5) of the wireless communication system 1 of the first embodiment described above. As shown in FIG. 30, the smartphone 11C includes a GPS receiver 121, a BT radio transmitter/receiver 124, a telematics transmitter/receiver 125, an advertisement determination unit 127, an authentication unit 137, antennas 122, 126, 129, and a controller 128C. The smartphone 11C has one each of the antennas 126 and 129, but may have a plurality of each.

The BT radio transmission/reception unit (third radio communication circuit) 124 performs radio communication conforming to the Bluetooth standard (first radio system). Telematics transmission/reception unit (fourth wireless communication circuit) 125 performs wireless communication based on a cellular communication method (second wireless method) different from the Bluetooth standard communication method (first wireless method).

The authentication unit 137 authenticates the user of the smartphone 11C. Authentication unit 137 has at least one authentication function out of password authentication, fingerprint authentication, and face authentication, and outputs authentication results to control unit 128C. The control unit 128C controls each unit of the apparatus, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. The GPS receiver 121, the BT radio transmitter/receiver 124, the telematics transmitter/receiver 125, the advertisement determination unit 127, and the authentication unit 137 operate under the control of the controller 128C. When communicating with the vehicle ECU 10C, the control unit 128C transmits information for registering itself with the vehicle ECU 10C.

FIG. 31 is a block diagram showing a schematic configuration of the electronic key 16 of the vehicle 50C. In the figure, the electronic key 16 includes a BT radio transmission/reception section 161 , a key switch 162 , an LED (Light Emitting Diode) 163 , a control section 164 and an antenna 165 . A BT radio transmission/reception unit (second radio communication circuit) 161 performs radio communication conforming to the Bluetooth standard (first radio system). An antenna 165 for Bluetooth communication is connected to the BT radio transmission/reception unit 161 . The BT radio transmission/reception unit 161 is controlled by the control unit 164 . The key switch 162 is a switch that enables operation of the vehicle 50C. A switch signal from the key switch 162 is received by the controller 164 .

An LED 163 is an indicator that indicates the operating state of the key switch 162 . The control unit 164 controls each unit of the apparatus, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. The BT radio transceiver 161 and LED 163 operate under the control of the controller 164 . The control unit 164 receives a switch signal for enabling operation of the vehicle 50C from the key switch 162, and transmits a Bluetooth signal for enabling operation of the vehicle 50C from the BT radio transmission/reception unit 161. Further, the control unit 164 controls lighting of the LED 163 by taking in a switch signal from the key switch 162 that enables the operation of the vehicle 50C.

Although the electronic key 16 has one antenna 165, it may have a plurality of antennas.

Next, operations of the vehicle ECU 10C and the smartphone 11C will be described.
Vehicle ECU 10C becomes operable when BT wireless transmitter/receiver (first wireless communication circuit) 103 and BT wireless transmitter/receiver (second wireless communication circuit) 161 of electronic key 16 are in the first communication state. Further, the vehicle ECU 10C becomes operable when the BT wireless transmitter/receiver (first wireless communication circuit) 103 and the BT wireless transmitter/receiver (third wireless communication circuit) 124 of the smartphone 11C are in the second communication state.

Further, the vehicle ECU 10C sets a predetermined When the BT radio transmission/reception unit (first radio communication circuit) 103 and the BT radio transmission/reception unit (third radio communication circuit) 124 do not enter the second communication state for a period of time (for example, one week) or longer, and the main switch ( When the operation unit) 504 detects a predetermined operation, the BT wireless transmission/reception unit (first wireless communication circuit) 103 of the vehicle 50C transmits an emergency advertisement (packet including emergency information). Note that the process of transmitting the emergency advertisement is as described in the wireless communication system 1 of the first embodiment.

In the process of transmitting the emergency advertisement, the BT wireless transmission/reception unit (first wireless communication circuit) 103 and the BT wireless transmission/reception unit (second wireless communication circuit) 161 of the electronic key (first wireless communication terminal) 16 perform the first communication. It is done regardless of the state. That is, the vehicle ECU 10C determines that the BT wireless transmission/reception unit (first wireless communication circuit) 103 and the BT wireless transmission/reception unit (second wireless communication circuit) 161 of the electronic key (first wireless communication terminal) 16 are in the first communication state. However, after the BT wireless transmitter/receiver (first wireless communication circuit) 103 and the BT wireless transmitter/receiver (third wireless communication circuit) 124 of the smartphone (second wireless communication terminal) 11C enter the second communication state, a predetermined time (for example, one week) or longer, the BT radio transmission/reception unit (first radio communication circuit) 103 and the BT radio transmission/reception unit (third radio communication circuit) 124 do not enter the second communication state, and the main switch of the vehicle 50C When the (operation unit) 504 detects a predetermined operation, the BT wireless transmission/reception unit (first wireless communication circuit) 103 transmits an emergency advertisement.

When the telematics transmission/reception unit 125 receives a signal to stop the second communication state, the control unit 128C of the smartphone 11C stops at least the BT radio transmission/reception unit 124 from entering the second communication state. Further, the control unit 128C operates the authentication unit 137 to perform authentication each time the smartphone 11C is used, and if the authentication succeeds, at least the BT wireless transmission/reception unit 124 continues to be in the second communication state, If the authentication fails, at least the BT radio transceiver 124 stops entering the second communication state. Although the communication state is divided into the first communication state and the second communication state, they may be the same state.

FIG. 32 is a diagram showing a usage pattern of the wireless communication system 3 of the third embodiment. In the figure, the wireless communication system 3 of the third embodiment is configured by the vehicle 50C, the vehicle ECU 10C, the smartphone 11C, and the electronic key 16 described above. A vehicle 50C belongs to a vehicle user 51 who is a regular owner, and is equipped with a vehicle ECU 10C. The smartphone 11C and the electronic key 16 belong to the vehicle user 51 . In addition to the smartphone 11C and the electronic key 16 of the vehicle user 51, the smartphone 11E other than the vehicle user 51 and the electronic key 16E are present. Reference numeral 300 indicates a Bluetooth communicable area (BLE communicable area) of the vehicle ECU 10C, and reference numeral 301 indicates a proximity detection area.

33 to 35 are sequence diagrams mainly showing the operation of the vehicle ECU 10C. In FIG. 33, the vehicle ECU 10C periodically performs connection authentication and area detection when not connected to the smartphone 11C or the electronic key 16. In FIG. Then, when a vehicle operation request is output from the main switch 504 of the vehicle 50C while the proximity of the smartphone 11C of the vehicle user 51 is not confirmed for a predetermined time or longer, the vehicle ECU 10C detects theft and prohibits vehicle operation. to Furthermore, it starts sending emergency advertisements.

In FIG. 34, the vehicle ECU 10C detects the proximity of the smartphone 11E or the electronic key 16E other than the vehicle user 51 while performing connection authentication and area detection, and in this state, switches the main switch 504 of the vehicle 50C. , the vehicle ECU 10C continues to prohibit vehicle operation and continues to transmit emergency advertisements.

In FIG. 35, when the vehicle ECU 10C detects proximity of the smartphone 11C of the vehicle user 51 while performing connection authentication and area detection, it cancels the theft detection and cancels the prohibition of vehicle operation. Furthermore, it stops sending emergency advertisements. Thereafter, when a vehicle operation request is output from main switch 504 of vehicle 50C, vehicle ECU 10C powers on vehicle 50C.

36 to 38 are sequence diagrams showing operations when the server 14C having an authentication function is provided to provide high security. The server 14C has an authentication function in addition to having the same functions as the server 14 shown in FIG. In FIG. 36, the vehicle ECU 10C periodically performs connection authentication and area detection. When a vehicle operation request is output, theft is detected and vehicle operation is prohibited. Furthermore, it starts sending emergency advertisements.

In FIG. 37, the smartphone 11C of the vehicle user 51 performs server authentication with the server 14C, and if the server authentication is NG, the server 14C notifies the smartphone 11C of the server authentication NG. Upon receiving the server authentication NG notification, the smartphone 11C notifies the vehicle ECU 10C of the server authentication NG. After receiving the server authentication NG notification, the vehicle ECU 10C detects proximity of the smartphone 11C of the owner of the server authentication NG. Continue to prohibit vehicle operation and continue to transmit emergency advertisements.

In FIG. 38, smartphone 11C of vehicle user 51 performs server authentication with server 14C, and if server authentication is OK, server 14C notifies smartphone 11C of server authentication OK. When the vehicle ECU 10C becomes connected to the smartphone 11C through connection authentication and area detection while the smartphone 11C has received the server authentication OK notification, the vehicle ECU 10C notifies the smartphone 11C of the server authentication OK. When the vehicle ECU 10C detects the approach of the owner's smartphone 11C with server authentication OK while receiving the server authentication OK notification from the smartphone 11C, the vehicle ECU 10C cancels the theft detection and cancels the vehicle operation prohibition. Furthermore, it stops sending emergency advertisements. Thereafter, when a vehicle operation request is output from main switch 504 of vehicle 50C, vehicle ECU 10C powers on vehicle 50C.

Next, the operation of the vehicle ECU 10C and the smartphone 11C will be described.
FIG. 39 is a flow chart for explaining the operation of the vehicle ECU 10C. In the figure, the vehicle ECU 10C first determines whether or not the smartphone 11C of the vehicle user 51 has been in proximity for a predetermined period of time (for example, one week) (step S80). If it is determined that there is no vehicle operation (that is, if it is determined that the vehicle is not approaching, and if it is determined to be "NO" in step S80), it is determined whether or not there is a vehicle operation request (step S81). When the vehicle ECU 10C determines that the smartphone 11C of the vehicle user 51 has approached the vehicle user 51 for a predetermined period of time or more (that is, when the proximity is confirmed, and determines "YES" in step S80), the vehicle user 51's smartphone 11C has been in the vicinity of the vehicle user 51 for a predetermined period of time or more. This process is repeated until it is determined that 11C is not close.

If the vehicle ECU 10C determines in step S81 that there is no vehicle operation request (if "NO" is determined in step S81), the vehicle ECU 10C repeats this process until it determines that there is a vehicle operation request. When the vehicle ECU 10C determines that there is a vehicle operation request ("YES" in step S81), the vehicle ECU 10C detects theft (step S82), and then prohibits vehicle operation (step S83). Furthermore, an emergency advertisement is transmitted (step S84).

After transmitting the emergency advertisement, the vehicle ECU 10C determines whether or not the smartphone 11C of the vehicle user 51 is in proximity (step S85). Returning to step S84, the emergency advertisement is continuously transmitted. When the vehicle ECU 10C determines that the smartphone 11C of the vehicle user 51 has approached (determined "YES" in step S85), the vehicle ECU 10C releases the theft detection (step S86), and then releases the vehicle operation prohibition (step S87). , and further stops the transmission of the emergency advertisement (step S88). After stopping the transmission of the emergency advertisement, the vehicle ECU 10C returns to the process of step S80.

FIG. 40 is a flowchart for explaining the operation of the smartphone 11C. Note that the operation of the smartphone 11C is the operation of the control unit 128C, but the subject is not the control unit 128C, but the smartphone 11C. In the figure, the smartphone 11C is placed in a non-contact state with the vehicle ECU 10C (step S90), and then determines whether or not the smartphone 11C is present in the BLE communicable area 300 (step S91). When the smartphone 11C determines that the smartphone 11C does not exist in the BLE communicable area 300 (when it determines "NO" in step S91), it returns to the process of step S90, and determines that the smartphone 11C exists in the BLE communicable area 300. If so ("YES" in step S91), connection authentication with the vehicle ECU 10C is performed (step S92), and the connection with the vehicle ECU 10C is established (step S93). Next, the smartphone 11C determines whether itself (smartphone 11C) exists in the BLE communicable area 300 (step S94). Return to processing. When the smartphone 11C determines that it (smartphone 11C) does not exist in the BLE communicable area 300 (“NO” in step S94), the process returns to step S90.

Next, operations of the vehicle ECU 10C, the smartphone 11C, and the server 14C when the server 14C having an authentication function is provided to provide high security will be described.
FIG. 41 is a flowchart for explaining the operation of vehicle ECU 10C when server 14C having an authentication function is provided. Although the operation of the vehicle ECU 10C is the operation of the control unit 108C, the subject is not the control unit 108C but the vehicle ECU 10C. In the figure, the vehicle ECU 10C first determines whether or not the smartphone 11C of the vehicle user 51 has approached for a predetermined time or longer (step S100). (That is, when the approach is not confirmed, when it is determined as "NO" in step S100), it is determined whether or not there is a vehicle operation request (step S101). When the vehicle ECU 10C determines that the smartphone 11C of the vehicle user 51 has approached the vehicle user 51 for a predetermined period of time or longer (that is, when the proximity is confirmed, and determines "YES" in step S100), the vehicle user 51's smartphone 11C has been in the vicinity of the vehicle user 51 for a predetermined period of time or longer. This process is repeated until it is determined that 11C is not close.

If the vehicle ECU 10C determines in step S101 that there is no vehicle operation request (if it determines "NO" in step S101), it repeats this process until it determines that there is a vehicle operation request. When the vehicle ECU 10C determines that there is a vehicle operation request (when it determines "YES" in step S101), the vehicle ECU 10C detects theft (step S102), and then prohibits vehicle operation (step S103). Furthermore, an emergency advertisement is transmitted (step S104).

After transmitting the emergency advertisement, the vehicle ECU 10C determines whether or not the smartphone 11C of the vehicle user 51 is in proximity (step S105). Returning to step S104, the emergency advertisement is continuously transmitted. When the vehicle ECU 10C determines that the smartphone 11C of the vehicle user 51 has approached (determined "YES" in step S105), the vehicle ECU 10C receives the server authentication information (step S106), and determines whether or not the server authentication is OK (step S107). ).

When the vehicle ECU 10C determines that the server authentication is not OK (that is, the server authentication is NG) (when it determines "NO" in step S107), it returns to the process of step S104. When the vehicle ECU 10C determines that the server authentication is OK (when it determines "YES" in step S107), the vehicle ECU 10C cancels theft detection (step S108), and then cancels the prohibition of vehicle operation (step S109). Furthermore, emergency advertisement transmission is stopped (step S110). After stopping the emergency advertisement transmission, the vehicle ECU 10C returns to the process of step S100.

FIG. 42 is a flowchart for explaining the operation of the smartphone 11C when the server 14C having an authentication function is provided. Note that the operation of the smartphone 11C is the operation of the control unit 128C, but the subject is not the control unit 128C, but the smartphone 11C. In the figure, the smartphone 11C is placed in a non-contact state with the vehicle ECU 10C (step S120), and then determines whether or not a predetermined time has passed (step S121). When the smartphone 11C determines that the predetermined time has not elapsed (when it determines “NO” in step S121), it determines whether itself (smartphone 11C) exists in the BLE communicable area 300 (step S122). ). When the smartphone 11C determines that it does not exist in the BLE communicable area 300 (determined as "NO" in step S122), the smartphone 11C returns to the process of step S120 and determines that it exists in the BLE communicable area 300. If so (if determined as "YES" in step S122), connection authentication with the vehicle ECU 10C is performed (step S127).

On the other hand, if the smartphone 11C determines in step S121 that the predetermined time has elapsed (if it determines "YES" in step S121), it performs server authentication (step S123), and determines whether server authentication is OK. (step S124). When the smartphone 11C determines that the server authentication is OK (when it determines “YES” in step S124), the smartphone 11C sets the server authentication information to OK (step S125). If determined as "NO"), the server authentication information is set to NG (step S126). After performing the process of step S125 or the process of step S126, the smartphone 11C performs the process of step S122.

After carrying out connection authentication with the vehicle ECU 10C in step S127, the smartphone 11C is placed in a connected state with the vehicle ECU 10C (step S128). Next, the smartphone 11C determines whether a predetermined time has elapsed (step S129), and if it determines that the predetermined time has not elapsed (determined as "NO" in step S129), the smartphone 11C performs BLE communication. It is determined whether it exists in the possible area 300 (step S130). If the smartphone 11C determines that it does not exist in the BLE communicable area 300 (determines "NO" in step S130), it returns to the process of step S120, and if it determines that it exists in the BLE communicable area 300 ( If "YES" is determined in step S130), the process of step S128 is performed.

On the other hand, if the smartphone 11C determines in step S129 that the predetermined time has elapsed (if it determines "YES" in step S129), it performs server authentication (step S131), and determines whether server authentication is OK. (step S132). When the smartphone 11C determines that the server authentication is OK (when it determines “YES” in step S132), it sets the server authentication information to OK (step S133), and when it determines that the server authentication is not OK (step S132). If determined as "NO"), the server authentication information is set to NG (step S134). After performing the process of step S133 or the process of step S134, the smartphone 11C performs the process of step S130.

FIG. 43 is a flow chart for explaining the operation of the server 14C when the server 14C having an authentication function is provided. Since the configuration diagram of the server 14C is not shown, the subject is assumed to be the server 14C as it is. However, it has the same configuration as the server 14 shown in FIG. 7 except that it has an authentication function. In FIG. 43, the server 14C determines whether or not the authentication request has been received (step S140), and if it determines that the authentication request has not been received (if determined as "NO" in step S140), the server 14C receives the authentication request. This process is repeated until it is determined that When the server 14C determines that it has received the authentication request (when it determines "YES" in step S140), it determines whether or not it has been confirmed that the owner is the legitimate owner (step S141). If it is determined that the owner has been confirmed ("YES" in step S141), the authentication OK is notified (step S142). ”), the authentication NG is notified (step S143). After performing the process of step S142 or step S143, the server 14C returns to the process of step S140.

As described above, the wireless communication system 3 of the third embodiment enables the vehicle 50C to operate when the vehicle 50C and the smartphone 11C are in the second communication state, and thereafter, the vehicle 50C and the smartphone 11C communicate with each other for a predetermined time or more. does not enter the second communication state and the main switch 504 of the vehicle 50C detects a predetermined operation, the emergency advertisement is transmitted from the vehicle 50C, so that the smartphone 11C can receive the emergency information from the vehicle 50C. Can be used as a key. Further, by allowing the smartphone 11C to be used as a key for the vehicle 50C, it is possible to spread smartphones that can be used as a key for the vehicle 50C.

(Fourth embodiment)
Next, a radio communication system according to the fourth embodiment will be described.
In the wireless communication system of the fourth embodiment, when the power of the vehicle is turned off while the regular owner's smartphone is in the vicinity of the vehicle ECU, the vehicle is set to alert mode. The distance to the vehicle ECU is measured by distance measurement technology using Bluetooth (registered trademark) communication, and when the vehicle is operated without a smartphone in the vicinity of the vehicle, the vehicle ECU is put out of alert mode. Transition to vehicle theft mode.

The wireless communication system of the fourth embodiment will be described below with reference to FIGS. 44 to 52. FIG.
FIG. 44 is a diagram showing a usage pattern of the wireless communication system 4 of the fourth embodiment. A radio communication system 4 according to the fourth embodiment shown in the figure basically includes a vehicle 50D, a vehicle ECU (radio communication device) 10D, and a smartphone (radio communication terminal) 11D. The vehicle 50D and the smartphone 11D belong to the vehicle user 51 who is the regular owner. A vehicle ECU 10D is mounted on the vehicle 50D. Identification information is assigned to the vehicle ECU 10D. This identification information can also be regarded as identification information of the vehicle 50D. This identification information is information that is uniquely determined by the vehicle ECU, and may be, for example, a MAC address.

The vehicle ECU 10D and the smartphone 11D each have a Bluetooth communication function, and Bluetooth communication is possible between the vehicle ECU 10D and the smartphone 11D. In addition to the Bluetooth communication function, the smartphone 11D also has a cellular communication function or a WiFi (registered trademark) communication function. A Bluetooth communicable area (BLE communicable area) 300 is an area where Bluetooth communication is possible. A proximity detection area 301 within the Bluetooth communicable area 300 is an area in the vicinity of the vehicle 50D described above. The Bluetooth communicable area 300 has a diameter of about 1 km, and the proximity detection area 301 has a diameter of about 2 m.

As described above, the vehicle ECU 10D sets the vehicle 50D to the alert mode when the vehicle 50D is powered off while the smartphone 11D of the vehicle user 51 of the vehicle 50D is in the vicinity of the vehicle ECU 10D. In the warning mode, the distance between the smartphone 11D and the vehicle ECU 10D is measured by distance measurement technology using Bluetooth communication and/or UWB (Ultra Wide Band), and the smartphone 11D does not exist in the vicinity of the vehicle 50D. When the vehicle 50D is operated in the state, the vehicle ECU 10D is changed from the alert mode to the vehicle theft mode.

FIG. 45 is a diagram showing a case where the smart phone 11D of the vehicle user 51 exists outside the Bluetooth communicable area 300 of the vehicle ECU 10D. FIG. 46 is a diagram showing a case where the smart phone 11D of the vehicle user 51 exists within the Bluetooth communicable area 300 of the vehicle ECU 10D.

Although the wireless communication system 4 of the fourth embodiment is applied to a two-wheeled vehicle (motorcycle) 50D, it can of course be applied to a four-wheeled vehicle. Hereinafter, configurations of the vehicle ECU 10D and the smartphone 11D of the wireless communication system 4 of the fourth embodiment will be sequentially described.

FIG. 47 is a block diagram showing a schematic configuration of part of the vehicle 50D and a schematic configuration of the vehicle ECU 10D. In the same figure, each component is common to the vehicle ECU 10 (see FIG. 2) of the radio communication system 1 of the first embodiment and the vehicle ECU 10C (see FIG. 29) of the radio communication system 3 of the third embodiment. Elements are labeled identically. A vehicle ECU 10D of the wireless communication system 4 of the fourth embodiment includes a switch detection unit 101C, an IG authentication determination unit 102, a BT wireless transmission/reception unit (first wireless communication circuit) 103, an unauthorized use detection unit (unauthorized use detection circuit) 105, A vehicle speed detector 106, a distance detector 138, a controller 108D and an antenna 110 are provided. Although the vehicle ECU 10D has one antenna 110, it may have a plurality of antennas.

The BT radio transmission/reception unit (first radio communication circuit) 103 performs radio communication conforming to the Bluetooth standard (first radio system), as described above. The distance detection unit 138 measures the distance between the vehicle 50D and the smartphone 11D using Bluetooth communication and/or UWB ranging technology, and outputs the result to the control unit 108D. A GPS receiver (not shown) may be installed in the vehicle 50D (or the vehicle ECU 10D) to obtain the distance to the GPS receiver 121 (see FIG. 48) of the smartphone 11D.

The control unit 108D controls each unit of the device, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. IG authentication determination section 102, BT radio transmission/reception section 103, unauthorized use detection section 105, vehicle speed detection section 106, and distance detection section 138 operate under the control of control section 108D. The unauthorized use detection unit 105 detects unauthorized use when the acceleration sensor 1051 detects a predetermined acceleration.

When the unauthorized use detection unit 105 detects unauthorized use and when the vehicle 50D and the smartphone 11D are within a predetermined distance (when the smartphone 11D is in the Bluetooth communication area 300), the control unit 108D sends an emergency message to the smartphone 11D. Send information. The emergency information is transmitted from the BT radio transmission/reception unit 103 of the vehicle ECU 10D. The emergency information transmitted from the BT radio transmission/reception unit 103 is received by the BT radio transmission/reception unit 124 (see FIG. 48) of the smartphone 11D.

In addition, when the unauthorized use detection unit 105 detects unauthorized use and when the vehicle 50D and the smartphone 11D are not within a predetermined distance (when the smartphone 11D is not within the Bluetooth communicable area 300), the control unit 108D outputs emergency information A Bluetooth advertising packet containing A Bluetooth advertising packet containing emergency information is transmitted from the BT radio transmission/reception unit 103 of the vehicle ECU 10D.

Control unit 108D does not transmit emergency information when unauthorized use detection unit 105 does not detect unauthorized use. In other words, emergency information is not transmitted from the BT radio transmission/reception unit 103 .

Here, the predetermined distance mentioned above is the distance of the Bluetooth communicable area 300 (approximately 1 km in diameter), which is the first distance. The distance of the proximity detection area 301 (approximately 2 m in diameter) is defined as a second distance (<first distance). The unauthorized use detection unit 105 detects unauthorized use when the vehicle 50D and the smartphone 11D are not at the second distance and when the main switch 504 is operated in a predetermined manner.

Note that the BT radio transmission/reception unit 103 of the vehicle 50D (actually the BT radio transmission/reception unit 103 of the vehicle ECU 10D) and the BT radio transmission/reception unit 124 of the smartphone 11D (see FIG. 48) are in a predetermined communication state. is at a predetermined distance, and the vehicle 50D and Assume that the smartphone 11D is not at a predetermined distance.

When the unauthorized use detection unit 105 of the vehicle 50D (actually the unauthorized use detection unit 105 of the vehicle ECU 10D) detects unauthorized use, and the BT wireless transmission/reception unit 103 of the vehicle 50D (actually the BT wireless transmission/reception unit 103 of the vehicle ECU 10D) and the smartphone 11D is not in a predetermined communication state, the BT radio transmission/reception unit 103 transmits a Bluetooth advertising packet containing the identification information and the emergency information of the vehicle 50D.

FIG. 48 is a block diagram showing a schematic configuration of the smartphone 11D. In the same figure, the same reference numerals are given to the same components as those of the information sharing user terminal (smartphone) 12 (see FIG. 5) of the wireless communication system 1 of the first embodiment described above. The smartphone 11D includes a GPS receiver 121, a BT radio transmitter/receiver 124, a telematics transmitter/receiver 125, an advertisement determining unit 127, a display 136, antennas 122, 126, 129, and a controller 128D. Note that the smartphone 11D has one each of the antennas 126 and 129, but may have a plurality of each.

The BT radio transmission/reception unit (second radio communication circuit) 124 performs radio communication conforming to the Bluetooth standard (first radio system). The telematics transmitting/receiving unit 125 performs wireless communication based on a cellular communication method (second wireless method) different from the Bluetooth standard communication method (first wireless method). The display unit 136 displays information corresponding to emergency information. The control unit 128D controls each unit of the device, and has a CPU (not shown), a ROM storing a program for operating the CPU, and a RAM used in the operation of the CPU. The GPS receiver 121, the BT radio transmitter/receiver 124, the telematics transmitter/receiver 125, the advertisement determination unit 127, and the display unit 136 operate under the control of the controller 128D. When communicating with the vehicle ECU 10D, the control unit 128D transmits information for registering itself with the vehicle ECU 10D.

In addition to using Bluetooth for communication between the vehicle ECU 10D and the smartphone 11D, WiFi or cellular may be used.

Next, operations of the vehicle ECU 10D and the smartphone 11D will be described.
49 and 50 are sequence diagrams mainly showing the operation of the vehicle ECU 10D. In FIG. 49, vehicle ECU 10D turns off the vehicle power supply of vehicle 50D and shifts to the warning mode when receiving a vehicle operation request from main switch 504 of vehicle 50D. The vehicle ECU 10D performs connection authentication and area detection in order to connect to the smartphone 11D of the vehicle user 51 when transitioning to the alert mode. In this case, it is assumed that the smartphone 11D is connected but not in proximity to the vehicle 50D (that is, the smartphone 11D is not in the proximity detection area 301). Upon receiving a vehicle operation request from the main switch 504 of the vehicle 50D in this state, the vehicle ECU 10D detects the theft and notifies the smartphone 11D of the vehicle user 51 of the theft.

In FIG. 50, vehicle ECU 10D turns off the vehicle power supply of vehicle 50D and shifts to the warning mode when receiving a vehicle operation request from main switch 504 of vehicle 50D. The vehicle ECU 10D performs connection authentication and area detection in order to connect to the smartphone 11D of the vehicle user 51 when transitioning to the alert mode. In this case, it is assumed that the smartphone 11D cannot be connected (that is, the smartphone 11D is not within the BLE communication area 300). Vehicle ECU 10D, upon receiving a vehicle operation request from main switch 504 of vehicle 50D in this state, detects theft and starts transmitting emergency advertisements.

FIG. 51 is a flow chart for explaining the operation of the vehicle ECU 10D. Although the operation of the vehicle ECU 10D is the operation of the control unit 108D, the subject is not the control unit 108D, but the vehicle ECU 10D. In the figure, the vehicle ECU 10D first determines whether or not a vehicle operation request has been received (step S150). This processing is repeated until it is determined that an operation request has been received. When the vehicle ECU 10D determines that it has received a vehicle operation request (when it determines "YES" in step S150), it determines whether it is connected to the smartphone 11D of the owner (vehicle user 51) (step S151). When determining that the vehicle ECU 10D is connected to the owner's smartphone 11D (when determining "YES" in step S151), the vehicle ECU 10D determines whether the owner's smartphone 11D exists in the proximity detection area 301 (step S152). . When the vehicle ECU 10D determines that the owner's smartphone 11D exists in the proximity detection area 301 (when it determines "YES" in step S152), the vehicle ECU 10D releases the theft detection (step S153), and then releases the vehicle operation prohibition ( step S154). Furthermore, the transmission of emergency advertisements is stopped (step S155). After that, the process returns to step S150.

On the other hand, when the vehicle ECU 10D determines in the determination in step S151 that the owner's smartphone 11D is not connected (determined as "NO" in step S151), the vehicle ECU 10D detects theft (step S156), and then operates the vehicle. is prohibited (step S157). Furthermore, transmission of emergency advertisement is started (step S158). After that, the process returns to step S150.

When the vehicle ECU 10D determines in step S152 that the owner's smartphone 11D does not exist in the proximity detection area 301 (when "NO" is determined in step S152), the vehicle ECU 10D detects theft (step S159 ), and then the vehicle operation is prohibited (step S160). Furthermore, the owner's smartphone 11D is notified of the theft (step S161). After that, the process returns to step S150.

FIG. 52 is a flow chart for explaining the operation of the smartphone 11D. Note that the operation of the smartphone 11D is the operation of the control unit 128D, but the subject is not the control unit 128D, but the smartphone 11D. In the figure, the smartphone 11D is first brought into a disconnected state with the vehicle ECU 10D (step S170). Next, the smartphone 11D determines whether itself (smartphone 11D) exists in the BLE communicable area 300 (step S171). If the smartphone 11D determines that it does not exist in the BLE communicable area 300 (determined as "NO" in step S171), it returns to the process of step S170 and determines that it exists in the BLE communicable area 300. If it is determined that the vehicle is connected (if determined as "YES" in step S171), connection authentication with the vehicle ECU 10D is performed (step S172). After performing connection authentication with the vehicle ECU 10D, the smartphone 11D is brought into a connected state with the vehicle ECU 10D (step S173). Next, the smartphone 11D determines whether or not it exists in the BLE communicable area 300 (step S174), and when it determines that it exists in the BLE communicable area 300 (when "YES" is determined in step S174). , the process of step S173 is continued. When the smartphone 11D determines that it does not exist in the BLE communicable area 300 (when it determines "NO" in step S174), the process returns to step S170.

As described above, the wireless communication system 4 of the fourth embodiment detects unauthorized use of the vehicle 50D and the smartphone 11D is within a predetermined distance from the vehicle 50D (that is, the smartphone 11D is within the BLE communication available area). 300), emergency information is transmitted from the vehicle ECU 10D of the vehicle 50D to the smartphone 11D, and unauthorized use of the vehicle 50D is detected, and the smartphone 11D is not within a predetermined distance from the vehicle 50D (that is, the smartphone 11D is not in the BLE communicable area 300), the vehicle ECU 10D of the vehicle 50D transmits a Bluetooth advertising packet including emergency information. , and if it is not at a predetermined distance from the vehicle 50D, it can indirectly receive a Bluetooth advertising packet from the vehicle 50D via cellular communication, WiFi, or the like.

Therefore, it is possible to notify the user 51 of the smartphone 11D of the abnormality of the vehicle 50D without using the telematics service in the vehicle 50D. Also, since there is no need to have a communication line or GPS function for using the telematics service, cost reduction can be achieved. In particular, by using a communication method conforming to the Bluetooth standard for communication between the vehicle 51D and the smartphone 11D, communication between the vehicle 51D and the smartphone 11D can be performed at low cost. In this way, it is possible to notify an abnormality of the vehicle 50D including theft at low cost and low power consumption.

Further, when the unauthorized use detection unit 105 of the vehicle 50D does not detect unauthorized use, the BT radio transmission/reception unit 103 does not transmit emergency information, thereby preventing false alarms.
Further, by using the acceleration sensor 1051 in the unauthorized use detection unit 105 of the vehicle 50D, it is possible to detect the impact given to the vehicle 50D with high sensitivity.
Further, since the information corresponding to the emergency information is displayed on the display unit 136 of the smartphone 11D, the user 51 of the smartphone 11D can visually confirm the information corresponding to the emergency information.

A wireless communication system and a wireless communication device according to the present disclosure are useful for low-cost vehicles such as scooters.

1 to 4 Wireless communication system 10, 10C, 10D Vehicle ECU
10A First vehicle ECU
10B Second vehicle ECU
11 vehicle user terminal 11C, 11D, 11E smartphone 12, 12B information sharing user terminal 13 bicycle parking lot Bluetooth unit 14, 14B, 14C server 15 telematics base station 16, 16E electronic key 50, 50C, 50D vehicle 50A first vehicle 50B second vehicle 51 Vehicle User (Authorized Owner)
52 information sharing user 53 cloud 101, 101C switch detection unit 102 IG authentication determination unit 103, 124, 131, 161 BT radio transmission/reception unit 104, 121 GPS reception unit 105 unauthorized use detection unit 106 vehicle speed detection unit 107, 123 clock 108, 108A , 108B, 108C, 108D, 128, 128B, 128C, 128D, 135, 143, 143B, 164 control unit 109 memory 110, 111, 122, 126, 129, 132, 165 antenna 125 telematics transmission/reception unit 127, 134 advertisement determination unit 133, 141 network communication unit 136 display unit 137 authentication unit 138 distance detection unit 142 notification information determination unit 162 key switch 163 LED
298 Normal Advertise Communication Range 299 Emergency Advertise Communication Range 300 BLE Communicable Area (Bluetooth Communicable Area)
301 proximity detection area 501 glove box switch 502 IGKEY switch 503 vehicle speed management ECU
504 Main switch 1051 Acceleration sensor

Claims (18)

a vehicle having an unauthorized use detection circuit and a first wireless communication circuit;
A radio communication system comprising a radio communication terminal having a second radio communication circuit capable of radio communication with the first radio communication circuit,
When the unauthorized use detection circuit of the vehicle detects unauthorized use and when the vehicle and the wireless communication terminal are within a predetermined distance, the first wireless communication circuit transmits emergency information to the second wireless communication circuit. and send
When the unauthorized use detection circuit of the vehicle detects the unauthorized use and when the vehicle and the wireless communication terminal are not within the predetermined distance, the first wireless communication circuit detects the Bluetooth (registered (trademark) advertising packet,
wireless communication system. A wireless communication system according to claim 1,
The predetermined distance is defined as a first distance,
The vehicle has an operation unit, and when the vehicle and the wireless communication terminal are not at a second distance smaller than the first distance and when a predetermined operation is performed on the operation unit, the unauthorized use Suppose the detection circuit detects unauthorized use,
wireless communication system. The wireless communication system according to any one of claims 1 and 2 ,
The first wireless communication circuit of the vehicle and the second wireless communication circuit of the wireless communication terminal comply with the Bluetooth standard,
wireless communication system. A wireless communication system according to claim 3 ,
The distance between the vehicle and the wireless communication terminal is obtained by ranging using Bluetooth communication and/or UWB ranging technology,
wireless communication system. The wireless communication system according to any one of claims 1 to 4 ,
A case where the first radio communication circuit of the vehicle and the second radio communication circuit of the radio communication terminal are in a predetermined communication state is defined as a case where the vehicle and the radio communication terminal are at a predetermined distance,
When the first wireless communication circuit of the vehicle and the second wireless communication circuit of the wireless communication terminal are not in the predetermined communication state, and when the vehicle and the wireless communication terminal are not at the predetermined distance,
wireless communication system. The wireless communication system according to any one of claims 1 to 5 ,
If the unauthorized use detection circuit of the vehicle does not detect the unauthorized use, the first wireless communication circuit does not transmit the emergency information.
wireless communication system. A wireless communication system according to claim 5 ,
When the unauthorized use detection circuit of the vehicle detects the unauthorized use, and when the first wireless communication circuit of the vehicle and the second wireless communication circuit of the wireless communication terminal are not in the predetermined communication state. , the first wireless communication circuit transmits a Bluetooth advertising packet containing identification information of the vehicle and the emergency information;
wireless communication system. The wireless communication system according to any one of claims 1 to 7 ,
the unauthorized use detection circuit of the vehicle includes an acceleration sensor;
Assume that unauthorized use is detected when the acceleration sensor detects a predetermined acceleration,
wireless communication system. The wireless communication system according to any one of claims 1 to 7 ,
The wireless communication terminal includes at least a display circuit, and the display circuit is capable of displaying information corresponding to the emergency information.
wireless communication system. having an unauthorized use detection circuit and a first wireless communication circuit and being mountable on a vehicle;
A wireless communication device capable of communicating with a wireless communication terminal having a second wireless communication circuit capable of wireless communication with the first wireless communication circuit,
When the unauthorized use detection circuit detects unauthorized use and when the vehicle and the wireless communication terminal are within a predetermined distance, the first wireless communication circuit transmits emergency information to the second wireless communication circuit. ,
When the unauthorized use detection circuit detects the unauthorized use and when the vehicle and the wireless communication terminal are not within the predetermined distance, the first wireless communication circuit detects a Bluetooth (registered trademark) including emergency information. sending an advertising packet;
wireless communication device. A wireless communication device according to claim 10 , wherein
The predetermined distance is defined as a first distance,
The vehicle has an operation unit, and when the vehicle and the wireless communication terminal are not at a second distance smaller than the first distance and when a predetermined operation is performed on the operation unit, the unauthorized use Suppose the detection circuit detects unauthorized use,
wireless communication device. The wireless communication device according to any one of claims 10 to 11 ,
The first wireless communication circuit and the second wireless communication circuit of the wireless communication terminal comply with the Bluetooth standard,
wireless communication device. A wireless communication device according to claim 12 , wherein
The distance between the vehicle and the wireless communication terminal is obtained by ranging using Bluetooth communication and/or UWB ranging technology,
wireless communication device. The wireless communication device according to any one of claims 10 to 13 ,
A case where the first radio communication circuit and the second radio communication circuit of the radio communication terminal are in a predetermined communication state is defined as a case where the vehicle and the radio communication terminal are at a predetermined distance,
When the first wireless communication circuit and the second wireless communication circuit of the wireless communication terminal are not in the predetermined communication state, and when the vehicle and the wireless communication terminal are not at the predetermined distance,
wireless communication device. The wireless communication device according to any one of claims 10 to 14 ,
If the unauthorized use detection circuit does not detect the unauthorized use, the first wireless communication circuit does not transmit the emergency information.
wireless communication device. 15. The wireless communication device of claim 14 ,
the first wireless communication when the unauthorized use detection circuit detects the unauthorized use and when the first wireless communication circuit and the second wireless communication circuit of the wireless communication terminal are not in the predetermined communication state; A circuit transmits a Bluetooth advertising packet containing identification information of the vehicle and the emergency information.
wireless communication device. The wireless communication device according to any one of claims 10 to 16 ,
The unauthorized use detection circuit includes an acceleration sensor,
Assume that unauthorized use is detected when the acceleration sensor detects a predetermined acceleration,
wireless communication device. The wireless communication device according to any one of claims 10 to 16 ,
The wireless communication terminal includes at least a display circuit, and the display circuit is capable of displaying information corresponding to the emergency information.
wireless communication device.

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