JPH11306404A - Vehicle detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle detector capable of specifying respective vehicles having the different positions of onboard equipment. SOLUTION: This device is constituted so as to detect a vehicle 1 loading onboard equipment 2 for performing radio communication. In this case, the device is provided with vehicle position detecting means 5 and 6 for detecting the position of the vehicle 1, car type information acquiring means 4 for acquiring car type information in a telegraphic message transmitted from the onboard equipment 2, storage means 8 storing the attachment position of the onboard equipment 2 for each car type, and vehicle specifying means 7 for specifying the vehicle 1 by retrieving the storage means 8, based on the car type information in the telegraphic message, acquiring the attachment position information and correcting the attachment position information, based on the position of the vehicle 1 detected by the vehicle position detecting means 5 and 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle detection device applied to a charging system for charging a vehicle equipped with a wireless vehicle-mounted device.

[0002]

2. Description of the Related Art FIG. 8 is a diagram showing a configuration example of a vehicle detection device used in a conventional charging system. Vehicle 1 has
An in-vehicle device 2 for performing wireless communication is mounted. The on-vehicle device 2 performs wireless communication with the wireless signal conversion device 4 via any of the plurality of antennas 3, and
Converts a radio signal into a communication message. Each antenna 3 has a unique narrow communication area, and is installed such that the communication area of any one of the antennas 3 covers the width direction on the road on which the vehicle 1 runs.

When the vehicle 1 enters the charging system, a vehicle position sensor 5 detects the vehicle 1, and a vehicle position measuring device 6 measures the position of the vehicle 1 based on the detection signal.
The communication message generated by the wireless signal conversion device 4 and the measurement result of the vehicle position measured by the vehicle position measurement device 6 are input to the vehicle identification device 7. The vehicle identification device 7 determines whether or not the in-vehicle device 2 has entered the communication area of the antenna 3 indicated by the antenna number recorded in the communication message, and identifies the vehicle 1 with which communication has occurred.

[0004]

In such a charging system using wireless communication, the on-vehicle device 2 is mounted at the same position such as the center or the left and right of the windshield of all the vehicles to be processed. As described above, in the billing system in which it is necessary to specify the charged vehicle 1, it is desirable that the in-vehicle device 2 is attached to a predetermined position in the vehicle.

However, depending on the vehicle, there are problems such as the in-vehicle device 2 interfering with the steering wheel or dashboard in the vehicle or obstructing the driver's field of view, so that the in-vehicle device 2 cannot be mounted at a predetermined position. In such a case, the in-vehicle device 2
Must be installed in a position other than the specified position. The presence of such vehicles having different positions of the on-vehicle devices causes a reduction in the performance of the vehicle-specific device in the billing system. An object of the present invention is to provide a vehicle detection device capable of specifying each vehicle having a different position of an in-vehicle device.

[0006]

Means for Solving the Problems To solve the above problems and achieve the object, a vehicle detection device of the present invention is configured as follows. (1) A vehicle detection device according to the present invention is a vehicle detection device that detects a vehicle equipped with an in-vehicle device that performs wireless communication.
Vehicle position detecting means for detecting the position of the vehicle, vehicle type information obtaining means for obtaining vehicle type information in the message transmitted from the vehicle-mounted device, and storage means in which mounting position information of the vehicle-mounted device for each vehicle type is stored Searching the storage means based on the vehicle type information in the message to obtain the mounting position information, and correcting the mounting position information based on the position of the vehicle detected by the vehicle position detecting means. And vehicle specifying means for specifying the vehicle. (2) The vehicle detection device of the present invention is the device described in (1) above, and reads a switch for setting a position where the on-vehicle device is to be mounted in the on-vehicle device and a setting state of the switch. Message generating means for generating the message based on the setting state.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 is a diagram showing a configuration of a vehicle detection device used in a charging system according to a first embodiment of the present invention. In FIG. 1, the same portions as those in FIG. 8 are denoted by the same reference numerals.

[0008] The vehicle 1 is equipped with an in-vehicle device 2 for performing wireless communication. The in-vehicle device 2 transmits a communication message in which vehicle type information of the vehicle 1 is stored, and performs wireless communication with the wireless signal conversion device 4 via one of the plurality of antennas 3. The wireless signal converter 4 converts a wireless signal indicating the communication message into an electrical signal, and extracts vehicle type information. Each antenna 3 has a unique narrow communication area, and is installed such that the communication area of any one of the antennas 3 covers the width direction on the road on which the vehicle 1 runs.

When the vehicle 1 enters the charging system, a vehicle position sensor 5 detects the vehicle 1, and outputs a detection signal indicating a vehicle detection result such as the center position of the vehicle 1 in the width direction on the road and the vehicle width. Output to the position measuring device 6. The vehicle position measuring device 6 measures the position of the vehicle 1 based on the detection signal. The vehicle type information extracted by the wireless signal conversion device 4 and the position information of the vehicle 1 measured by the vehicle position measurement device 6 are input to the vehicle identification device 7.

The vehicle position mounting database 8 records mounting position information of the vehicle-mounted device 2 for each vehicle type. The vehicle identification device 7 uses the vehicle-mounted device mounting position database 8 based on the vehicle type information recorded in the communication message.
To obtain the mounting position information of the vehicle-mounted device 2. Vehicle mounting position information includes the right side, center,
This is data indicating the mounting position of the vehicle-mounted device 2 in the vehicle 1, such as the left side. Further, the vehicle identification device 7 corrects the mounting position information of the vehicle-mounted device 2 as described later, and associates the communication message with the vehicle position information.

FIG. 2 is a diagram showing a format example of the communication message. In this message, vehicle type information of the vehicle 1 on which the in-vehicle device 2 is mounted is stored, and a message header portion 9, a vehicle type information data portion 10, a communication antenna number 1
1 and other data sections 12. Here, the vehicle type means the type of the mounting position and mounting method of the vehicle-mounted device 2 such as a passenger car, a bus, a truck, a taxi, and a convertible car.

FIG. 3 is a diagram showing an example of a mounting position of the vehicle-mounted device 2 in the vehicle 1. In the first embodiment,
The in-vehicle device 2 is attached to one of the right side, the center, and the left side of the windshield of the vehicle 1. Note that the mounting position of the vehicle-mounted device 2 shown in FIG. 3 is a position when the driver's seat is viewed from the front side of the vehicle. That is, the billing system is
This is applied when the mounting position of the vehicle-mounted device is determined for each vehicle type.

FIG. 4 is a flowchart showing a procedure of a correction process of the mounting position of the vehicle-mounted device, which is performed by the vehicle identification device 7. As described above, the vehicle specifying device 7 corrects the obtained mounting position information of the vehicle-mounted device 2 in the vehicle 1 and determines whether the corrected position of the vehicle-mounted device 2 is within the communication area of the antenna that has communicated. judge.

First, in step S1, the vehicle identification device 7 acquires vehicle type information. Next, in step S2, the vehicle-mounted device mounting position database 8 is searched, and in step S3, mounting position information is acquired.

Subsequently, in step S4, the position of the vehicle-mounted device 2 in the vehicle 1 is determined. If the position of the vehicle-mounted device 2 is on the right side of the windshield, the mounting position information is corrected to the right in step S5, and in step S4. If the position of the vehicle-mounted device 2 is the center of the windshield, the mounting position information is corrected to the center in step S6. If the position of the vehicle-mounted device 2 is the left side of the windshield in step S4, the mounting position information is corrected in step S7. Correct to the left.

Next, in step S8, if the position of the on-vehicle device 2 is within the communication area of the antenna 3 with which communication has been performed, step S9
Then, the vehicle detected by the vehicle position sensor 5 is determined to be a candidate for the vehicle related to the communication message, and a process of associating the communication message with the position information of the vehicle measured by the vehicle position measuring device 6 is performed. . If it is determined in step S8 that the position of the on-vehicle device 2 is not within the communication area of the antenna 3 with which communication has been performed, the process proceeds to step S8.
At 10, it is determined that the detected vehicle is not a vehicle related to the communication message.

In the first embodiment, by correcting the mounting position information of the vehicle-mounted device 2, the vehicle detection sensor 5 is corrected.
Can be corrected even if the measured center position of the vehicle 1 does not match the mounting position of the vehicle-mounted device 2, since the deviation between the mounting position of the vehicle-mounted device 2 and the vehicle center position obtained from the vehicle detection sensor 5 can be corrected. Can be accurately determined whether or not the in-vehicle device 2 has entered the communication area.

(Second Embodiment) The vehicle detection device used in the charging system according to the second embodiment of the present invention requires the on-vehicle device mounting position database 8 used in the first embodiment. Instead, the device configuration is the same as that shown in FIG. The vehicle detection device according to the second embodiment can be applied to a case where the mounting position of the vehicle-mounted device is different for each vehicle, and the position where the vehicle-mounted device can be mounted is known for the first time at the time of mounting.

As shown in FIG. 8, a vehicle 1 is equipped with an on-vehicle device 2 for performing wireless communication. The in-vehicle device 2 communicates with one of the plurality of antennas 3 and transmits a communication message storing the mounting position data of the in-vehicle device 2 to the antenna 3.
Send to The vehicle position sensor 5 detects that the vehicle 1 has entered the charging system. A detection signal indicating the vehicle detection result is input to the vehicle position measurement device 6. The vehicle position measuring device 6 measures the position of the vehicle 1 based on the detection signal.

The communication message generated by the on-vehicle device 2 is converted into an electric signal by the wireless signal conversion device 4 and is transmitted to the vehicle identification device 7.
Is input to The position information of the vehicle 1 measured by the vehicle position measuring device 6 is also input to the vehicle specifying device 7.
The vehicle identification device 7 acquires the mounting position data of the vehicle-mounted device 2 stored in the communication message, corrects the mounting position information of the vehicle-mounted device 2 as described later, and associates the communication message with the position information of the vehicle. Make a connection.

FIG. 5A is a diagram showing a functional configuration of the vehicle-mounted device 2 used in the second embodiment, and FIG. 5B shows the setting contents of the vehicle-mounted device mounting position setting switch. FIG. FIG. 5A shows an example in which A of the vehicle-mounted device mounting position setting switch 14 is short-circuited, B and C are opened, and the vehicle-mounted device 2 is mounted on the left side of the windshield of the vehicle 1. In addition, when A of the switch 14 is indefinite, B is short-circuited, and C is open, the vehicle-mounted device is mounted at the center of the windshield. When A and B of the switch 14 are undefined and C is short-circuited, the vehicle-mounted device is mounted on the right side of the windshield.

The on-vehicle device mounting position setting switch 14 is
The setting is performed when the vehicle-mounted device 2 is mounted on the vehicle 1, and is set according to the position where the vehicle-mounted device 2 is actually mounted. The setting state of the switch 14 is read by the switch contact reading means 15, and the read result of the switch is decoded by the attachment position output means 16, and the message generation device 17
Is input to The message generating device 17 generates a communication message including attachment position data of the vehicle-mounted device 2. The communication message generated by the message generation device 17 is transmitted to any one of the plurality of antennas via the wireless signal generation device 18 and the vehicle-mounted device antenna 19.

FIG. 6 is a diagram showing a format example of the communication message. This message includes a message header section 9, on-vehicle device attachment position data 20, a communicated antenna number 11,
And other data sections 12.

FIG. 7 is a flowchart showing a procedure of a correction process of the mounting position of the vehicle-mounted device, which is performed by the vehicle identification device 7. The vehicle identifying device 7 extracts the mounting position data 20 of the vehicle-mounted device 2 from the received communication message, corrects the mounting position information of the vehicle-mounted device 2 in the vehicle 1 based on the mounting position data 20, and As in the embodiment, it is determined whether or not the corrected position is within the communication area of the antenna 3 with which communication has been performed.

First, in step S11, the vehicle identification device 7 acquires the vehicle mounting position data 20. Next, in step S12, the position of the vehicle-mounted device 2 in the vehicle 1 is determined,
If the position of the vehicle-mounted device 2 is on the right side of the windshield, the mounting position information is corrected to the right in step S13. If the position of the vehicle-mounted device 2 is the center of the windshield in step S12, the mounting position information is corrected in step S14. If the position of the vehicle-mounted device 2 is on the left side of the windshield in step S12, the mounting position information is corrected on the left side in step S15.

Next, in step S16, if the position of the vehicle-mounted device 2 is within the communication area of the antenna 3 with which communication has been performed, step S16 is executed.
At 17, it is determined that the vehicle detected by the vehicle sensor 5 is a candidate for the vehicle related to the communication message, and a process of associating the communication message with the position information of the vehicle measured by the vehicle position measuring device 6 is performed. . If it is determined in step S16 that the position of the vehicle-mounted device 2 is not within the communication area of the antenna 3 with which communication has been performed, it is determined in step S18 that the detected vehicle is not a vehicle related to the communication message.

In the second embodiment, the on-vehicle device 2 reads the setting state of the switch set when the on-vehicle device 2 is attached, decodes the information, stores the information in a message, and stores the information in the message.
By transmitting to, as in the first embodiment,
Even if the center position of the vehicle 1 measured by the vehicle detection sensor 5 and the mounting position of the vehicle-mounted device 2 do not match, the deviation between the mounting position of the vehicle-mounted device 2 and the vehicle center position obtained from the vehicle detection sensor 5 can be corrected. It is possible to accurately determine whether or not the on-vehicle device 2 has entered the communication area of the antenna 3.

Further, in the second embodiment, an example has been described in which the on-vehicle device 2 has three mounting positions and the number of switch contacts is three. However, the number of mounting positions and the number of switch contacts are required. May be increased or decreased according to the conditions, and is not limited. The switch decoding function may be provided in the vehicle identification device 7 in the charging system.

It should be noted that the present invention is not limited to the above-described embodiments, but can be implemented with appropriate modifications without departing from the scope of the invention. (Summary of Embodiment) The configuration, operation and effect shown in the embodiment are summarized as follows. [1] The vehicle detection device according to the embodiment is a vehicle detection device that detects a vehicle 1 on which an in-vehicle device 2 that performs wireless communication is mounted. , 6), a vehicle type information obtaining means (4) for obtaining vehicle type information in the message transmitted from the on-vehicle device 2,
A storage unit (8) in which mounting position information of the vehicle-mounted device 2 for each vehicle type is stored, and the storage unit (8) is searched based on the vehicle type information in the message to obtain the mounting position information, and the vehicle A vehicle identification unit (7) for identifying the vehicle by correcting the mounting position information based on the position of the vehicle 1 detected by the position detection units (5, 6).

As described above, according to the vehicle detecting device, the vehicle type information is stored in the message transmitted from the vehicle-mounted device 2, and the mounting position information of the vehicle-mounted device is searched based on the vehicle type information. Since the deviation between the vehicle center position and the like obtained from the position detecting means (5, 6) and the mounting position information is corrected, each vehicle 1 having a different position of the vehicle-mounted device 2 can be specified, and the vehicle-specific performance in the billing system. Is improved. [2] The vehicle detection device shown in the embodiment is the same as the above [1].
And a switch 14 for setting a position where the on-vehicle device 2 is to be mounted in the on-vehicle device 2.
A message generating means (16, 16) for reading the setting state of the switch 14 and generating the message based on the setting state.
17).

As described above, according to the vehicle detection device, the switch 14 for setting the position where the vehicle-mounted device 2 is to be mounted is provided.
Is read, and the mounting position of the vehicle-mounted device 2 is obtained, so that each vehicle 1 having a different position of the vehicle-mounted device 2 can be specified, and the performance of the vehicle specification in the billing system is improved.

[0032]

According to the vehicle detection device of the present invention, vehicle type information is stored in a message transmitted from the vehicle-mounted device, and mounting position information of the vehicle-mounted device is searched based on the vehicle type information. Since the deviation between the vehicle center position and the like obtained from the position detecting means and the mounting position information is corrected, each vehicle having a different position of the vehicle-mounted device can be specified, and the performance of specifying the vehicle in the charging system is improved.

According to the vehicle detecting device of the present invention, since the setting state of the switch for setting the position where the vehicle-mounted device is mounted is read and the position where the vehicle-mounted device is mounted is obtained, each vehicle having a different position of the vehicle-mounted device can be specified. In addition, the vehicle-specific performance in the billing system is improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a vehicle detection device used in a charging system according to a first embodiment of the present invention.

FIG. 2 is a view showing a format example of a communication message according to the first embodiment of the present invention.

FIG. 3 is a view showing an example of a mounting position of an in-vehicle device in the vehicle according to the first embodiment of the present invention.

FIG. 4 is an exemplary flowchart showing a procedure of an in-vehicle device attachment position correction process performed by the vehicle specifying device according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a functional configuration of an in-vehicle device of a vehicle identification device according to a second embodiment of the present invention and a setting content of an in-vehicle device attachment position setting switch.

FIG. 6 is a view showing a format example of a communication message according to the second embodiment of the present invention.

FIG. 7 is a flowchart showing a procedure of an in-vehicle device attachment position correction process performed by the vehicle identification device according to the second embodiment of the present invention.

FIG. 8 is a diagram showing a configuration example of a vehicle detection device used in a charging system according to a second embodiment of the present invention and a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vehicle 2 ... In-vehicle device 3 ... Antenna 4 ... Wireless signal conversion device 5 ... Vehicle position sensor 6 ... Vehicle position measuring device 7 ... Vehicle identification device 8 ... In-vehicle device installation position database 9 ... Message header part 10 ... Vehicle type information data part REFERENCE SIGNS LIST 11 antenna number communicated 12 other data portion 13 resistive element 14 on-vehicle device mounting position setting switch 15 switch contact reading means 16 mounting position output means 17 electronic message generating device 18 radio signal generating device 19 vehicle mounted Machine antenna 20… In-vehicle machine mounting position data

Claims (2)

[Claims] 1. A vehicle detecting apparatus for detecting a vehicle equipped with an on-vehicle device for performing wireless communication, comprising: vehicle position detecting means for detecting a position of the vehicle; and vehicle type information in a message transmitted from the on-vehicle device. Acquiring vehicle type information obtaining means, storage means storing mounting position information of the vehicle-mounted device for each vehicle type, and obtaining the mounting position information by searching the storage means based on the vehicle type information in the message. A vehicle detecting device comprising: a vehicle specifying unit that specifies the vehicle by correcting the mounting position information based on the position of the vehicle detected by the vehicle position detecting unit. 2. A switch for setting a position where the on-vehicle device is mounted in the on-vehicle device, and a message generating means for reading a setting state of the switch and generating the message based on the setting state. The vehicle detection device according to claim 1, further comprising: