JP3202611B2 - Toll collection system for toll roads - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toll road toll collection system for performing toll road toll collection processing by communication between an onboard unit mounted on a vehicle and a ground unit.

[0002]

2. Description of the Related Art Conventionally, in a toll collection system for toll roads, a method is known in which a toll collector directly collects cash from a driver at a toll booth, or causes a driver to put cash into an automatic machine and automatically collect tolls. Has been adopted. For this reason,
The driver had to stop at the toll booth and prepare cash.

On the other hand, recently, as a toll collection system that does not require the delivery of tolls at toll booths, an on-board device such as a non-contact type IC card that records ID information and can communicate wirelessly with the outside is used. A new system has been developed. FIG.
1 shows an example of a toll collection system to which the present invention is applied.

In FIG. 3, reference numeral 1 denotes a vehicle detection device using, for example, a photoelectric tube, 2 denotes a toll collection device, 3 denotes a vehicle, 4 denotes a vehicle-mounted device, 5 denotes a start detection device, 6 denotes an antenna, and 7 denotes an antenna controller. . The vehicle detection device 1 separates and detects the passing vehicle 3. The antenna 6 is controlled by an antenna controller 7 and performs wireless communication with the vehicle-mounted device 4. The antenna controller 7 receives the ID information from the in-vehicle device 4 via the antenna 6, and thereafter transmits the billing information to the in-vehicle device 4 from the antenna 6. In the case of the post-payment system, the center computer communicates with a not-shown center computer to perform a withdrawal process from a pre-registered financial period account. The toll collection device 2 is composed of a toll ticket confirming machine 13 and a receipt issuing machine 14, and issues a receipt from the receipt issuing machine 14 by pressing a push button of a vehicle type provided on the toll ticket confirming machine 13. I do.

The start detecting device 5 includes vehicle separators 15 and 16 for detecting the passage of the vehicle 3 and an axis number detector 17 for detecting the number of axes of the vehicle 3, and detects the completion of the start of the passing vehicle 3. To return the system to its original state.
The start guide signal light 19 is the vehicle 3 on which the vehicle-mounted device 4 is mounted.
To inform whether or not traffic is possible. The surveillance television camera 20 is for photographing the vehicle 3 when the charging process cannot be performed due to a failure of the on-vehicle device 4 or the like.

[0006]

In the above-mentioned conventional toll collection system for toll roads, after the vehicle-mounted device 4 executes the charging process from the antenna controller 7, the vehicle-mounted device 4 transmits a response of the process execution to the antenna controller 7.
And communication with the antenna controller 7 is stopped to prevent double billing. However, if the in-vehicle device 4 does not receive the response after the in-vehicle device 4 executes the charging process and returns a response to the in-vehicle device 7, the in-vehicle device 7 sends the response to the in-vehicle device 4 again. To start communication from the beginning. At this time, the in-vehicle device 4 does not communicate with the antenna controller 7 to prevent double billing.

After the vehicle-mounted device 4 returns a response to the execution of the charging process to the antenna controller 7, the vehicle-mounted device 4 stops communicating with the antenna controller 7 in order to prevent double charging. Does not receive the response,
This causes a recognition error between the antenna controller 7 and the in-vehicle device 4 that are the ground devices.

The present invention has been made to solve the above-mentioned problem, and even if the ground unit cannot receive a response from the vehicle-mounted unit after executing the charging process, there is a risk of double charging due to the retransmission process. It is an object of the present invention to provide a toll road toll collection system that can reliably prevent misalignment between a ground unit and an onboard unit.

[0009]

SUMMARY OF THE INVENTION The present invention relates to an on-vehicle device mounted on a vehicle and having a memory for storing ID information and a wireless communication means, and an ID from the on-vehicle device at an entrance of a toll road.
In a toll collection system for a toll road having a ground unit for receiving information and transmitting billing information to the on-board unit, a pilot signal is transmitted from the ground unit to an on-board unit in a communication area.
Signal, and the in-vehicle device that received this pilot signal
Sends an Ilot response signal to communicate between the ground unit and the onboard unit.
Communication is started and transmitted after the charging process is performed from the on-board unit.
If the ground unit fails to receive the charging response
The pilot signal is retransmitted from the ground machine and the pilot
The in-vehicle device that has received the
Information is added to the pilot response signal and transmitted to the ground unit.
It is characterized by doing.

[0010] As described above, by adding information on whether or not the in-vehicle device has already been charged to the response of the short read message transmitted from the in-vehicle device to the ground device, the ground device can communicate with the in-vehicle device. Even if a response cannot be received after the execution of the charging process, there is no danger of double charging due to the retransmission process, and it is possible to reliably prevent the recognition error between the ground unit and the on-board unit.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of the vehicle-mounted device 4 in the toll road toll collection system. The in-vehicle device 4 in the present embodiment includes a CPU (Central Processing Unit) 21, a communication circuit 22, an antenna 23, a read only memory (ROM) 24, and a readable / writable memory (RA
M) 25, a battery 26 and the like. The read-only memory 24 stores ID information and the like unique to each vehicle.

The ID information includes information for charging according to the type of each vehicle, and is given to the vehicle-mounted device 4 in advance. If you want to support a postpaid system,
Further, it includes information on accounts of financial institutions such as banks for paying tolls.

On the other hand, the readable / writable memory 25 stores a balance amount,
Payment history, entrance information, and the like are rewritably stored, and these information are read out by the CPU 21. The balance amount, the payment history, and the like are displayed on a display (not shown).

The CPU 21 is connected to the ground unit via the communication circuit 22 and the antenna 23, that is, the antenna 6 shown in FIG.
And wirelessly communicates with the antenna controller 7 via the, and transmits information such as fixed ID information, balance, and payment account from the read-only memory 24 and the readable / writable memory 25 at the request of the antenna controller 7. Further, the CPU 21 stores the billing information received from the antenna controller 7 via the communication circuit 22 and the antenna 23 as a billing history in the readable / writable memory 25. The information is removed.

FIG. 2 shows a data sequence between the antenna controller 7 and the vehicle-mounted device 4. As shown in the above data sequence, in the present invention, the antenna controller 7
In order to prevent a discrepancy in recognition between the mobile terminal and the on-vehicle device 4, after performing the on-vehicle device charging process, the antenna controller 7 considers the case where the charging response could not be received. Information DA indicating whether or not the in-vehicle device has already been charged is added to information D of (pilot response).

As described above, the information DA indicating whether or not the on-vehicle device 4 in the communication area has already been charged is added to the pilot response transmitted from the on-vehicle device 4 to the antenna controller 7, thereby enabling antenna control. As shown in the data sequence of FIG. 2, the device 7 adds the message sequence 32 when the response (link end command response 31) after the charging process of the vehicle-mounted device 4 cannot be received due to, for example, a reception error or unreachability. By retransmitting the pilot signal 33, the preceding information can be read, double billing can be prevented, and a misalignment between the antenna controller 7 and the vehicle-mounted device can be reliably prevented.

Note that if the message between the antenna controller 7 and the on-vehicle device 4 becomes longer, all information may not be transmitted accurately. I have.

[0018]

As described above in detail, according to the present invention, information indicating whether or not the in-vehicle device has already been charged is added to the response of the short read message transmitted from the in-vehicle device to the ground device. Therefore, even if the ground unit cannot receive a response from the onboard unit after executing the charging process, there is no danger of double charging due to the retransmission process, and the recognition error between the ground unit and the onboard unit. Can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle-mounted device in a toll road toll collection system according to an embodiment of the present invention.

FIG. 2 is an exemplary view showing a data sequence between the antenna controller and the vehicle-mounted device in the embodiment.

FIG. 3 is a configuration diagram of a toll road toll collection system to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle detection device 2 Toll collection device 3 Vehicle 4 In-vehicle device 6 Antenna 7 Antenna controller 13 Passport check machine 14 Receipt issuing machine 21 CPU 22 Communication circuit 23 Antenna 24 Read only memory 25 Read / write memory

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G07B 15/00 G07B 15/00 510

Claims (1)

(57) [Claims] 1. An on-vehicle device mounted on a vehicle and provided with a memory storing ID information and wireless communication means, receiving ID information from the on-vehicle device at an entrance of a toll road, and charging information on the on-vehicle device. In a toll collection system for a toll road having a ground unit for transmitting a pilot signal, a pilot signal is transmitted from the ground unit to a vehicle unit in a communication area.
The in-vehicle device that transmitted and received this pilot signal
Communication signal between the ground unit and the on-board unit
The section that starts and is transmitted from the in-vehicle device after the charging process is performed
If the ground machine fails to receive a gold response,
Retransmit the pilot signal from the upper unit, and
The in-vehicle device that received the signal determines whether the in-vehicle device has already been charged.
Adds information to pilot response signal and transmits to ground unit
Toll collection system of the toll road, characterized in that.