JP2005135262A - Vehicle information gathering apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle information gathering apparatus capable of relatively easily and securely gathering travel information etc., on vehicles on roads. <P>SOLUTION: A survey device main body 9 comprises an input interface 91 which is operative to input vehicle information signals from roadside antennas 51 and 52, a vehicle type data extracting part 92 which extracts vehicle type data from the vehicle information signals inputted from the interface 91, a counting part 93 which counts passing vehicles by lanes and vehicle types, a recording part 94 which records count data by the vehicle types, lane by lane, and an output interface 95 which is operative to output count results. In an embodiment, an external storage device 58 and a display 59 are connected to the output interface 95. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle information collection device that collects travel information, location information, and the like of vehicles existing on roads and parking lots.

  In order to prevent traffic accidents, eliminate traffic congestion, etc., when installing traffic lights or increasing lanes on a road, it is necessary to investigate in detail the changes in traffic volume and types of passing vehicles on the road. Conventionally, this type of survey has been conducted by an investigator who waits at an intersection using a counter. However, since the work is performed in an adverse environment due to exhaust gas or noise, the health of the investigator is impaired. there were. On the other hand, a speed limit sign is provided on most roads to encourage the driver to observe the speed limit in order to encourage the vehicle traveling exceeding the speed limit to decelerate. However, such a method has no effect on a driver who has missed the speed limit sign or a driver who ignores the speed limit sign. On the other hand, a stolen vehicle is discovered by a police officer reading a registration number written on a license plate of a suspicious vehicle and making an inquiry about the stolen vehicle with a wireless device or the like. However, this method has a problem that the number of stolen vehicles that can be found is limited because the number of police officers is small for all stolen vehicles.

Therefore, various apparatuses for automatically performing this kind of investigation have been developed. For example, a traffic volume survey device that radiates a radio wave beam to a road from a radar antenna installed on the road side and counts the number of passing vehicles and identifies a vehicle type has been proposed as a traffic volume survey. (For example, refer to Patent Document 1). In addition, in order to make the driver recognize that the speed limit has been exceeded, multiple ultrasonic transceivers are installed on the road, the speed of the vehicle passing under these ultrasonic transceivers is detected, There has been proposed an overspeed warning system that issues a warning by a warning device when an overspeed is recognized (see, for example, Patent Document 2). Furthermore, as a device for detecting a stolen vehicle, a non-contact IC chip (RFID (Radio Frequency IDentification) tag) is embedded in the body of the vehicle, and the information transmitted from the non-contact IC chip is provided on a road or the like. There has been proposed a stolen vehicle discovery system that reads discovery information to a theft victim or an insurance company when the information matches the information stored in the stolen vehicle information database (for example, a patent) Reference 3).
Japanese Patent Laid-Open No. 11-272988 (paragraphs 0018 to 0022, FIG. 3) JP-A-8-62330 (paragraph 0018, FIG. 1) JP 2003-175800 A (paragraphs 0016, 0017, FIG. 1)

  However, each of these devices has problems. In the traffic volume survey device of Patent Document 1, for example, when a large vehicle such as a truck is parked between a radar antenna and a road, the large vehicle becomes a shield and the radio wave beam is blocked, and the traffic volume is completely investigated. It becomes impossible to do. In addition, in the overspeed warning system of Patent Document 2, since individual overspeed vehicles are not specified and recorded, it is impossible to send a warning or the like to the owner of the vehicle that frequently overspeeds. In addition, the stolen vehicle detection system of Patent Document 3 employs a method in which a special non-contact IC chip is fixed to the body of the vehicle, which increases the manufacturing cost of the vehicle and makes it difficult to retrofit (retrofit). there were.

  The present invention has been made in view of such a background, and an object of the present invention is to provide a vehicle information collection device that can collect travel information and the like of vehicles existing on a road relatively easily and reliably. .

The vehicle information collecting apparatus according to the first aspect of the present invention includes a receiving unit that is installed in a vehicle travel area and receives radio waves including specific information of the vehicle that is emitted from a sensor-type tire pressure monitoring system mounted on the vehicle. It is characterized by.
In the vehicle information collection device according to claim 1, for example, when a vehicle approaches a receiving device provided on a road, a parking lot, or the like, transmission / reception of an in-vehicle ECU that is an antenna constituting a sensor-type tire pressure monitoring system of the vehicle. A vehicle approaching from a radio wave emitted from a transmission / reception antenna built in the antenna, door mirror or door handle is specified.

According to a second aspect of the present invention, there is provided the vehicle information collecting apparatus according to the first aspect, wherein the radio wave is emitted by a tire pressure sensor mounted on a wheel of the vehicle. .
In the vehicle information collecting apparatus according to the second aspect, for example, the receiving means receives radio waves from tire pressure sensors provided on four wheels of the vehicle.

According to a third aspect of the present invention, there is provided the vehicle information collecting device according to the first or second aspect, wherein the vehicle travel area is a road, and the vehicle information collecting device is based on a reception result of the receiving means. And a counting means for counting the vehicles passing the road for each vehicle type.
In the vehicle information collecting apparatus according to claim 3, for example, a receiving means is installed on a predetermined road, vehicle type data is specified by extracting vehicle type data from the unique information received by the receiving means, and a counting means is provided for each vehicle type. The traffic volume on the road is investigated by counting.

According to a fourth aspect of the present invention, there is provided the vehicle information collecting apparatus according to the first or second aspect, wherein the vehicle traveling area is a road and a plurality of receiving means are installed on the road. A traveling speed calculating means for calculating a traveling speed of the vehicle based on a distance between the plurality of receiving means and a time during which the vehicle passes near the receiving means, and a calculation result of the traveling speed calculating means Characterized by comprising: an overspeed determination means for comparing the predetermined speed violation determination threshold with a predetermined speed violation determination threshold; and an overspeed vehicle recording means for recording the determination result of the overspeed determination means together with the specific information. To do.
In the vehicle information collecting apparatus according to claim 4, for example, when the vehicle passes over two receiving means embedded under the road, the traveling speed is calculated from the distance between the two receiving means and the time during which the vehicle passes through both receiving means. When the calculating means calculates the traveling speed of the vehicle and the speed excess determining means determines that the traveling speed is equal to or greater than the overspeed determination threshold, the overspeed vehicle recording means records the determination result together with the registration number.

According to a fifth aspect of the present invention, there is provided a vehicle information collection device according to the first or second aspect, wherein the search vehicle information storage means storing the search vehicle information and the reception means receive the vehicle information collection device. A search vehicle determination unit that determines a search vehicle from the unique information and the search vehicle information, and a location information creation unit that creates location information of the search vehicle based on a determination result of the search vehicle determination unit It is characterized by.
In the vehicle information collection device according to claim 5, for example, the receiving device receives the radio wave emitted by the stolen vehicle, and the registration number data extracted from the radio wave and the registration number of the search vehicle stored in the search vehicle information storage means are obtained. If they match, the location information creation means creates the current location of the stolen vehicle as location information.

  According to the vehicle information collecting apparatus of the first aspect, by appropriately installing the receiving means in the vehicle travel area, it is possible to grasp the moving state of the vehicle and the like, and the sensor type tire pressure monitoring system is generally mounted. As a result, there is no need to provide a dedicated radio wave transmission means on the vehicle side, and an increase in cost can be suppressed. According to the vehicle information collecting apparatus of the second aspect, since four tire air pressure sensors are provided in the case of a passenger car, vehicle information can be collected even if some of them break down. Further, according to the vehicle information collecting apparatus of claim 3, the investigator can investigate the traffic volume without waiting at an intersection or the like, and is hardly affected by the shielding on the road. In addition, according to the vehicle information collecting device of claim 4, in addition to being able to warn the overspeed vehicle with a relatively inexpensive and simple configuration, it is possible to identify a customary overspeed vehicle and warn its owner It is possible to send a letter. Further, according to the vehicle information collecting apparatus of the fifth aspect, for example, by using the output radio wave of the air pressure sensor, it is possible to realize the discovery of the stolen vehicle without increasing the manufacturing cost of the vehicle.

  Hereinafter, three embodiments of a vehicle information collection device according to the present invention will be described in detail with reference to the drawings. In these embodiments, the vehicle information collection device uses a radio wave transmitted from a tire pressure sensor (hereinafter referred to as a pressure sensor unit) for a TPMS (Tire Pressure Monitoring System) of the vehicle. It is configured to collect travel information and the like.

<< First Embodiment >>
In the first embodiment, the present invention is applied to a traffic survey device that surveys traffic on a road for each vehicle type and lane.
FIG. 1 is a plan view showing a device configuration of a vehicle according to the first embodiment, FIG. 2 is a circuit configuration diagram of an air pressure sensor, and FIG. 3 is a concept showing a configuration of a traffic volume survey device according to the first embodiment. FIG. 4 is a block diagram showing the configuration of the investigation apparatus main body, and FIG. 5 is a flowchart showing the traffic investigation procedure in the first embodiment.
<Vehicle device configuration>
First, the device configuration of the vehicle will be described with reference to FIG. In the description, the four wheels and the members arranged corresponding thereto, that is, the tire, the air pressure sensor unit, the load sensor, and the antenna are collectively referred to by numerals, and the individual members are arranged. Depending on the position, identification is performed by using subscripts of fl (front left), fr (front right), rl (back left) rr (back right). Moreover, when naming these members generically, it describes as "wheel 3", for example, and when describing each member, it describes as "wheel 3fr."

  As shown in FIG. 1, a vehicle (passenger car in this embodiment) 1 includes four wheels 3 on which tires 2 are mounted, and each wheel 3 is a pneumatic sensor unit that measures tire air pressure and tire internal temperature. 4 is installed. In the vehicle 1, four vehicle body side antennas 6 are installed in the vicinity of each wheel 3, and an in-vehicle ECU (Electronic Control Unit) 7 and a warning device 8 (a warning light 81 and a warning buzzer 82) are installed in the vehicle interior. Yes. The in-vehicle ECU 7 includes a microcomputer, ROM, RAM, peripheral circuits, input / output interfaces, various drivers, and the like, and the vehicle-side antenna 6 and the like are connected via a communication line (CAN (Controller Area Network in this embodiment)). A warning device 8 is connected. In the case of the present embodiment, the warning lamp 81 has a total of four lamps on the front, rear, left, and right, and can indicate the position of the tire 2 where the tire air pressure has decreased.

  As shown in FIG. 2, the air pressure sensor unit 4 includes a CPU (Central Processing Unit) 42, a pressure sensor 43 that generates an output according to tire pressure, and a temperature sensor 44 that generates an output according to tire temperature. It has. Outputs from the pressure sensor 43 and the temperature sensor 44 are converted into digital values via an A / D (Analog / Digital) conversion circuit (not shown) and input to the CPU 42.

  The air pressure sensor unit 4 includes a power source (lithium battery or the like) 45, and this power source 45 functions as an operating source for the CPU 42 and the like. The air pressure sensor unit 4 includes a sensor-side antenna 46 having a transmission / reception function, and receives an activation signal and a control signal transmitted from the in-vehicle ECU 7 via the sensor-side antenna 46, while the pressure sensor 43 and the temperature. A detection signal of the sensor 44 is transmitted to the vehicle-mounted ECU 7 (see FIG. 1) via the vehicle body side antenna 6.

  For example, a 315 MHz PCM (Pulse Code Modulation) digital radio wave signal is transmitted from the sensor-side antenna 46 of the air pressure sensor unit 4. Although not shown, a voltage sensor is provided in the power supply circuit between the power supply 45 and the CPU 42 and outputs a signal corresponding to the output voltage of the power supply 45. The output of the voltage sensor is also A / D converted and input to the CPU 42.

  The air pressure sensor unit 4 outputs a detection signal that is combined in the order of sensor ID, pressure sensor output, temperature sensor output, and voltage sensor output. In response, a vehicle information signal combined in the order of vehicle type data and registration number data is output. In the case of this embodiment, identification information for distinguishing the detection signal from the vehicle information signal is provided in the header portion of the signal transmitted from the air pressure sensor unit 4. As a result, the transmission / reception function of the air pressure sensor unit 4 can be used for traffic surveys and the like, and the processing man-hours and costs on the traffic survey device (roadside equipment) side can be reduced.

<Configuration of traffic volume survey device>
Next, the configuration of the traffic volume survey device will be described.
As shown in FIG. 3, the traffic volume survey device 5 includes road-side antennas 51 and 52 that perform transmission and reception with the vehicle 1, a survey device body 9 installed in a road management facility 53, a road-side antenna 51, 52 includes a transmission device 54 that transmits the vehicle information signal received by the inspection device main body 9. In this embodiment, the roadside antennas 51 and 52 are, for example, loop antennas having a 315 MHz PCM digital reception function, and a predetermined number (one in each lane in FIG. 3) is embedded in the road 55. Yes. The transmission device 54 is connected to the road side antennas 51 and 52 by wire, and transmits a vehicle information signal from a transmission antenna 56 provided on the upper side to a reception antenna 57 on the road management facility 53 side.

  As shown in FIG. 4, the investigation apparatus main body 9 extracts vehicle type data from the input interface 91 used for inputting vehicle information signals from the road-side antennas 51 and 52 and the vehicle information signal input from the input interface 91. A vehicle type data extraction unit 92, a counting unit 93 that counts the number of passing vehicles for each lane and each vehicle type, a recording unit 94 that records vehicle type count data for each lane, and an output interface 95 that is used to output counting results It is made up of. In the present embodiment, an external storage device 58 and a display 59 are connected to the output interface 95.

<Operation of First Embodiment>
When the vehicle 1 starts running, as shown in FIG. 1, the air pressure sensor unit 4 transmits and receives a detection signal of the tire air pressure and the tire internal temperature at a predetermined output interval (for example, every several minutes). The in-vehicle ECU 7 performs the air drop determination based on the detection signal, and if there is a tire whose tire air pressure is lower than the air pressure drop determination threshold, The warning buzzer 82 is sounded. Note that the tire pressure determination using the air pressure sensor unit 4 and the warning when the tire pressure drops are performed in other embodiments as in the first embodiment.

  On the other hand, in FIG. 3, a predetermined pressure is applied to the air pressure sensor unit 4 (see FIG. 1) of the vehicle 1 (passenger car 1a, freight car 1b, motorcycle 1c, etc.) traveling directly above the road side antennas 51 and 52. A vehicle information request signal is output at an output interval (for example, every 100 milliseconds), and the vehicle information signal is transmitted from the air pressure sensor unit 4 that has received the vehicle information request signal to the roadside antennas 51 and 52. At this time, as described above, since the identification information is provided in the header portion of the signal transmitted from the air pressure sensor unit 4, only the vehicle information signal can be easily transmitted to the road side antennas 51 and 52. The vehicle information signal is received by the roadside antennas 51 and 52 and then transmitted to the investigation apparatus main body 9 via the transmission apparatus 54.

In the case of this embodiment, the investigation apparatus main body 9 repeatedly executes the traffic amount investigation control shown in the flowchart of FIG. 5 at a predetermined control interval (for example, every 10 milliseconds).
When the investigation apparatus body 9 starts the traffic investigation control, it first determines whether or not a vehicle information signal has been input in step S1 of FIG. 5. If this determination is No, after jumping to RETURN, START Return to and repeat control. When the vehicle 1 passes above the road side antenna 51 or the road side antenna 52 and the determination in Step S1 is Yes, the investigation apparatus main body 9 (see FIG. 4) determines the vehicle type data from the vehicle information signal in Step S2. In step S3, it is determined whether or not the input of the vehicle information signal is on the first lane side.

  If the determination in step S3 is Yes, the investigation apparatus body 9 calls the corresponding vehicle type count data from the first lane-side recording area of the recording unit 94 (see FIG. 4) and increments it by 1 in step S4. And update. If the determination in step S3 is No, the investigation apparatus main body 9 calls the corresponding vehicle type count data from the second lane recording area of the recording unit 94 in step S5, and updates it by incrementing it by one. To do. In addition, a date, a day of the week, a time zone, etc. may be added to the vehicle type count data so as to make it possible to know a change in traffic volume.

  The vehicle type count data stored in the recording unit 94 of the investigation apparatus main body 9 is stored in the external storage device 58 for backup or the like and is displayed on the display as necessary.

<< Second Embodiment >>
FIG. 6 is a conceptual diagram showing the configuration of the overspeed warning device according to the second embodiment, FIG. 7 is a block diagram showing the configuration of the main body of the warning device, and FIG. 8 is the procedure for overspeed warning in the second embodiment. It is a flowchart which shows. The device configuration of the vehicle in the second embodiment is the same as that in the first embodiment.

<Configuration of overspeed warning device>
The configuration of the overspeed warning device will be described below.
As illustrated in FIG. 6, the overspeed warning device 100 includes a pair of roadside antennas 111 and 112 that perform transmission and reception with the vehicle 1, a warning device body 120, and an overspeed warning that is driven by the warning device body 120. Unit 113. In the present embodiment, the road side antennas 111 and 112 and the overspeed warning device 113 are connected to the warning device main body 120 via a communication cable. The roadside antennas 111 and 112 are, for example, loop antennas having a 315 MHz PCM digital reception function, and are embedded in the overtaking lane 115 of the expressway with a predetermined installation distance D (for example, 15 m). The overspeed warning device 113 is installed in the upper front part of the road side antennas 111 and 112 in the overtaking lane 115.

  As shown in FIG. 7, the warning device main body 120 includes an input interface 121 used for inputting vehicle information signals from the road-side antennas 111 and 112, and two vehicle information input from both road-side antennas 111 and 112. A speed calculation unit 122 that calculates a traveling speed from a difference in signal input time, a speed excess determination unit 123 that performs a speed excess determination based on the traveling speed calculated by the speed calculation unit 122, and a registration that extracts registration number data from the vehicle information signal The number data extraction unit 124, a warning signal generation unit 125 that outputs a warning command based on the determination result of the overspeed determination unit 123, and an output interface 126 that is used to output a warning signal or the like. In the case of this embodiment, the output interface 126 is connected to the overspeed warning device 113 and the central traffic control system 114 that controls traffic throughout the country.

<Operation of Second Embodiment>
Also in the case of the second embodiment, as in the first embodiment, in FIG. 6, the vehicle is compared with the air pressure sensor unit 4 (see FIG. 1) of the vehicle 1 that travels directly above the road side antennas 111 and 112. An information request signal is output, and the vehicle information signal is transmitted from the air pressure sensor unit 4 that has received the vehicle information request signal to the roadside antennas 111 and 112. The vehicle information signal is transmitted from the road side antennas 111 and 112 to the warning device main body 120.

In the present embodiment, the warning device main body 120 repeatedly executes the overspeed warning control shown in the flowchart of FIG. 8 at a predetermined control interval (for example, every 10 milliseconds).
When the overspeed warning control is started, the warning device main body 120 first determines whether or not a vehicle information signal is input in step S11 of FIG. 8, and if this determination is No, jumps to RETURN and then START. Return to and repeat control. When the vehicle 1 passes above the roadside antennas 111 and 112 (see FIG. 6) and the determination in Step S11 is Yes, the warning device main body 120 determines that the vehicle 1 is connected to the roadside antenna 111 in Step S12. A difference Δt between the time of passing and the time of passing through the road side antenna 112 is obtained, and the travel speed V of the vehicle 1 is calculated by dividing the installation interval D of the both road side antennas 111 and 112 by this difference Δt.

  Next, in step S13, the warning device main body 120 determines whether or not the traveling speed V is equal to or higher than a predetermined speed excess determination threshold Vth (for example, speed limit +20 km / h). , After jumping to RETURN, return to START and repeat control. When the vehicle 1 travels at a speed equal to or greater than the overspeed determination threshold Vth and the determination in step S13 is Yes, the warning device main body 120 outputs a warning display command to the overspeed warning device 113 in step S14. Accordingly, an electric light display such as “speed over! Decelerate!” Is displayed on the overspeed warning device 113, and the driver of the vehicle 1 can recognize that the traveling speed exceeds the speed limit.

  Next, the warning device main body 120 extracts the registration number data from the vehicle information signal in step S15, and then transmits the registration number data to the central traffic control system 114 as an overspeed vehicle in step S16. Thereby, in the central traffic control system 114, the registration number of the vehicle 1 is recorded in the overspeed vehicle database (not shown), and a warning is sent when the number of overspeed reaches a predetermined value (for example, 3 times). Etc. are performed.

<< Third Embodiment >>
FIG. 9 is a conceptual diagram showing the configuration of the stolen vehicle search device according to the third embodiment, FIG. 10 is a block diagram showing the configuration of the search device main body, and FIG. 11 is a procedure for searching for the stolen vehicle in the third embodiment. It is a flowchart which shows. In addition, the apparatus structure of the vehicle in 3rd Embodiment is also the same as that of the said 1st Embodiment.

<Configuration of stolen vehicle search device>
Hereinafter, the configuration of the stolen vehicle search device will be described.
As shown in FIG. 9, the stolen vehicle search device 200 includes road-side antennas 211 to 214 and parking lot-side antennas 221 to 228 that perform transmission / reception with the vehicle 1, and a search device body installed in the vehicle management facility 230. 240, a roadside transmission device 250 that transmits vehicle information signals received by the roadside antennas 211 to 214 to the search device body 240, and a vehicle information signal received by the parking lot side antennas 221 to 228 to the search device body 240. It is comprised from the parking lot side transmitter 260 which performs. The road side antennas 211 to 214 and the parking lot side antennas 221 to 228 show only a part of the antennas constituting the stolen vehicle search device 200, and various roads on which the vehicle 1 can travel or enter It shall be installed in the facility.

  In the case of this embodiment, the road side antennas 211 to 214 and the parking lot side antennas 221 to 228 are loop antennas having, for example, a 315 MHz PCM digital reception function. A predetermined number of roadside antennas 211 to 214 (two in each lane in FIG. 10, a total of four) are embedded in the road 271, and a predetermined number of parking lot antennas 221 to 228 (in FIG. 10). , One in each parking space, a total of 8) is embedded in the parking lot 272. The road-side transmission device 250 is connected to the road-side antennas 211 to 214 by wire, and transmits a vehicle information signal from a transmission antenna 251 provided on the upper side to a reception antenna 231 on the vehicle management facility 230 side. The parking lot-side transmission device 260 is connected to the parking lot-side antennas 221 to 228 by wire, and transmits a vehicle information signal from the transmission antenna 261 provided on the upper side to the reception antenna 231 on the vehicle management facility 230 side. .

  As shown in FIG. 10, the search device main body 240 includes an input interface 241 used for inputting vehicle information signals from the road side antennas 211 to 214 and the parking lot side antennas 221 to 228, and registration number data from the vehicle information signals. Registration number data extraction unit 242 that extracts the stolen vehicle, a theft determination unit (search vehicle determination unit) 243 that performs the theft vehicle determination from the extracted registration number data, and the location information of the stolen vehicle based on the determination result of the theft determination unit 243 A location information creation unit 244 to be created, a location information recording unit 245 that records location information of the stolen vehicle, and an output interface 246 that is used to output location information of the stolen vehicle. In the present embodiment, the output interface 246 is connected to an alarm 281 that notifies the discovery of a stolen vehicle and a terminal device 282 that is used for input and search of stolen vehicle data.

<Operation of Third Embodiment>
Also in the case of the third embodiment, as in the first and second embodiments, in FIG. 9, the vehicle 1 traveling directly above or directly above the road side antennas 211 to 214 and the parking lot side antennas 221 to 228. A vehicle information request signal is output to the air pressure sensor unit 4 (see FIG. 1) of the vehicle 1 to be parked, and the road side antennas 211 to 214 and the parking lot side antenna 221 are received from the air pressure sensor unit 4 that has received the vehicle information request signal. A vehicle information signal is transmitted to ˜228. The vehicle information signal is received by the road side antennas 211 to 214 and the parking lot side antennas 221 to 228 and then transmitted to the search device main body 240 via the road side transmission device 250 and the parking lot side transmission device 260.

In the case of this embodiment, the search device main body 240 repeatedly executes theft vehicle search control shown in the flowchart of FIG. 11 at a predetermined control interval (for example, every 10 milliseconds).
When the search device body 240 starts the stolen vehicle search control, it first determines whether or not a vehicle information signal has been input in step S21 of FIG. 11, and if this determination is No, jumps to RETURN and then START. Return to and repeat control. When the vehicle 1 passes above the roadside antennas 211 to 214 (see FIG. 9) and the parking lot side antennas 221 to 228, and the determination in step S21 is Yes, the search device main body 240 determines that the search device body 240 has step S22. The registration number data is extracted from the vehicle information signal.

  Next, in step S23, the search device main body 240 transmits a vehicle information signal by comparing this registration number data with the stolen vehicle data stored in the stolen vehicle database (search vehicle information storage means: not shown). It is determined whether or not the vehicle 1 is a stolen vehicle. If this determination is No, after jumping to RETURN, the control returns to START and repeats the control.

  If the registration number data and the stolen vehicle data match and the determination in step S23 is Yes, the search device main body 240 receives the registration number data and the vehicle-side antennas 211-214 (or The location information of the stolen vehicle is created from the position information of the parking lot side antennas 221 to 228) and the reception time of the vehicle information signal. Next, the search device main body 240 records the location information of the stolen vehicle in the location information recording unit 245 in step S25.

  Next, the search device main body 240 outputs an activation command to the alarm 281 and activates it (sounds) in step S26 to notify the management worker or the like that the stolen vehicle has been found. Thereby, the management worker can operate the terminal device 282 and call the location information of the corresponding stolen vehicle on the display. If the stolen vehicle is traveling, the location information may be sequentially stored in the location information recording unit 245 and the travel route may be displayed on the map screen.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above-described embodiment and can be widely modified. For example, in each of the above embodiments, the air pressure sensor unit 4 receives the vehicle information request signal and transmits the vehicle information signal. However, the in-vehicle ECU 7 is a transmission / reception that is built in the vehicle body side antenna 6, the door mirror, or the door handle. The vehicle information request signal may be received and the vehicle information signal may be transmitted via a radio wave emitted from an antenna. In each of the above embodiments, the vehicle information signal including the vehicle type data and the registration number data is used as the radio wave including the specific information of the vehicle. However, the vehicle type and the registration number are associated with the sensor ID of each air pressure sensor unit 4. The vehicle type and the registration number may be recognized from the sensor ID extracted from the detection information. Further, the roadside antennas 51, 52, 111, 112, 211 to 214 may be installed on the side of the vehicle 1 (on the guardrail or the like), and thus interference is less likely to occur.

  In each of the above embodiments, the present invention is applied to a traffic volume survey, an overspeed warning, and a stolen vehicle search. However, the present invention is applied to a speed violation vehicle clearance or a vehicle search used for a crime. You may apply. Furthermore, the present invention may be applied to collection of vehicle information of vehicles illegally parked in parking prohibited places or vehicles parked in the parking space on the road for a long time, identification / clearance of vehicles, etc. The present invention may be applied to collection of vehicle information and vehicle identification of vehicles parked without permission. In addition, the specific configuration and processing procedure of the vehicle and each device can be changed as appropriate without departing from the spirit of the present invention.

It is a top view which shows the apparatus structure of the vehicle which concerns on 1st Embodiment. It is a circuit block diagram of an air pressure sensor. It is a key map showing the composition of the traffic survey device concerning a 1st embodiment. It is a block diagram which shows the structure of an investigation apparatus main body. It is a flowchart which shows the procedure of the traffic investigation control in 1st Embodiment. It is a conceptual diagram which shows the structure of the overspeed warning apparatus which concerns on 2nd Embodiment. It is a block diagram which shows the structure of a warning device main body. It is a flowchart which shows the procedure of the overspeed warning control in 2nd Embodiment. It is a conceptual diagram which shows the structure of the stolen vehicle search apparatus which concerns on 3rd Embodiment. It is a block diagram which shows the structure of a search device main body. It is a flowchart which shows the procedure of stolen vehicle search control in 3rd Embodiment.

Explanation of symbols

1 Vehicle 3 Wheel 4 Air Pressure Sensor Unit (Tire Air Pressure Sensor)
5 Traffic volume survey device (vehicle information collection device)
9 Survey device body 51, 52 Road side antenna (reception means)
55 Road 100 Overspeed warning device (vehicle information collection device)
111, 112 Road side antenna (reception means)
120 Warning device body 200 Theft vehicle search device (vehicle information collection device)
211 to 214 Road side antenna (receiving means)
221 to 228 Parking lot side antenna (receiving means)
240 Searching device body

Claims (5)

  A vehicle information collecting apparatus, comprising: a receiving unit that is installed in a vehicle travel region and receives radio waves including specific information of the vehicle emitted from a sensor-type tire pressure monitoring system mounted on the vehicle.   2. The vehicle information collecting apparatus according to claim 1, wherein the radio wave is emitted by a tire pressure sensor mounted on a wheel of the vehicle. The vehicle travel area is a road;
The vehicle information collection device according to claim 1, further comprising: a counting unit that counts a vehicle passing through the road for each vehicle type based on a reception result of the receiving unit. The vehicle travel area is a road;
A plurality of receiving means are installed on the road,
A traveling speed calculating means for calculating a traveling speed of the vehicle based on a distance between the plurality of receiving means and a time during which the vehicle passes in the vicinity of the plurality of receiving means;
Overspeed determination means for comparing the calculation result of the traveling speed calculation means with a predetermined speed violation determination threshold value to perform overspeed determination;
The vehicle information collection device according to claim 1, further comprising an overspeed vehicle recording unit that records a determination result of the overspeed determination unit together with the unique information. Search vehicle information storage means storing search vehicle information;
A search vehicle determination unit for determining a search vehicle from the unique information and the search vehicle information received by the reception unit;
The vehicle information collection device according to claim 1, further comprising location information creation means for creating location information of the searched vehicle based on a determination result of the search vehicle determination unit.

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