JP2534890Y2 - Vehicle wireless identification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a wireless identification device for identifying various kinds of information including a vehicle registration number by wireless radio waves.

[Conventional technology]

A registration number consisting of letters and numbers is recorded on the license plate of the vehicle, and can be visually confirmed.
In recent years, a device has been put to practical use that illuminates a television camera or infrared rays and shoots these numbers with an infrared camera to identify the vehicle. These devices are installed at highway gates and general roads, and are effective in early detection of stolen vehicles and crackdown on traffic violations.

[Problems to be solved by the invention]

However, the amount of visible information that can be written in a limited space such as a license plate is extremely limited. In addition, when photographing with a television camera, it is almost impossible at night when a sufficient amount of light cannot be obtained. When an infrared camera is used, it can be used at night, but an accurate image may not be obtained on a rainy day. The same applies when the license plate is dirty. In addition, the conventional image recognition apparatus has a drawback that a forged plate cannot be identified.

The present invention has been made in order to solve the above-mentioned inconvenience, and it is an object of the present invention to provide a wireless identification device for a vehicle which can record a large amount of information and can identify the device under almost all conditions. It is intended for.

[Means for solving the problem]

As shown in FIG. 1, the vehicle wireless identification device of the present invention for achieving the above object has a host computer (2).
A data terminal (4) connected to (3) constantly oscillates a command for reading an identification code, and a transmission / reception circuit (19) for transmitting and receiving the identification code and data associated therewith.
have. The identification code card (2) attached to the license plate (1) of the vehicle includes a transmission circuit (15)
And a receiving circuit comprising a tuning amplifier circuit (7) and a decoding circuit (8); and a memory (11) which stores the identification code in a non-rewritable manner and has a rewritable partial area. The data associated with the identification code stored in the partial area of the memory (11) is rewritten by the identification code received from the data terminal (4) and the data associated with the identification code.

[Action]

If a radio signal for reading is constantly transmitted from a data terminal installed at a key point of traffic, etc., when a vehicle with the license plate of the present invention passes through it, the vehicle registration number etc. The identification code is read and transmitted as a radio wave signal. If the radio wave signal is received by the data terminal, the passing vehicle can be identified. The data on the vehicle identified by the data terminal is optional, such as being transferred to a host computer as needed.

〔Example〕

Hereinafter, an embodiment of a vehicle wireless identification device to which the present invention is applied will be described in detail.

As shown in FIG. 1, the identification code card 2 is attached to the margin of the license plate 1 of the vehicle. The plate may be attached to the surface of the plate 1 or may be fitted into a cut-out portion of the plate 1. It may be affixed to the back of plate 1, in which case plate 1
Must be made of a material that does not block radio waves, for example, plastic.

The identification code card 2 incorporates, for example, a block circuit as shown in FIG. The circuit of the identification code card 2 is a circuit related to the circuit of the data terminal 4. The identification code card 2 includes a receiving antenna 6, a tuning amplification circuit 7, a decoding circuit 8, a read control circuit 10, a memory 11 storing a vehicle registration number and other necessary identification code data, a code generation circuit 13, a modulation circuit. 14, a transmission circuit 15, and a transmission antenna 16. The data terminal 4 includes a transmitting / receiving antenna 18, a transmitting / receiving circuit 19, and an identification circuit.
20. It comprises a data transfer circuit 21 and is connected to a host computer 23.

From the transmitting / receiving antenna 18 of the data terminal 4, a radio wave signal of a command for reading the identification code is constantly transmitted. When the vehicle to which the wireless identification number plate 1 is attached approaches the data terminal 4 and the card 2 enters the receivable area, the radio wave is received by the receiving antenna 6. The received signal is amplified by the tuning amplifier circuit 7 to adjust the waveform, and the decoding circuit 8 decodes the command.
According to the command, an address of the memory 11 is designated from the read control circuit 10 to read necessary data. The identification code is reorganized by the code generation circuit 13 based on the data. The identification code is converted into a transmission signal by the modulation circuit 14, and transmitted as a radio wave signal from the transmission antenna 16 via the transmission circuit 15. In the data terminal 4, the radio signal of the identification code is received by the transmission / reception antenna 18 and the transmission / reception circuit 19, and the identification circuit 20 decodes the identification code. The decrypted data is transferred by the transfer circuit 21 to the host computer 23, where information processing is performed.

It should be noted that at least a part of the memory 11 is a random access memory (RAM) so that
It is possible to add, delete, or rewrite the data of the identification code stored in accordance with the instruction from.

Vehicles equipped with the license plate 1 for wireless identification as described above are useful for various purposes in vehicle management.
The following is an application example.

If the data terminals 4 are installed at the entrance and the exit of the expressway, and the host computer 23 calculates the toll of each section for the vehicles passing therethrough, the receipt of the toll ticket can be omitted. In addition, a system for collecting tolls from the vehicle owner to the vehicle online at a later date can be introduced, which helps to alleviate congestion on the expressway and save labor.

The data terminal 4 is installed at the entrance of the parking lot, and the entrance is opened only when a vehicle registered in the host computer 23 comes. In addition, the number of times the parking lot is used, the time, and the like can be recorded in the memory 11 each time it is used, and can be used as basic data for collecting a parking fee.

By inputting the numbers of arranged vehicles such as stolen vehicles and traffic offending vehicles into the host computer 23, the vehicle can be found immediately when passing the vicinity of the data terminal 4.

In addition to the vehicle registration number, data related to the vehicle inspection certificate is recorded in the memory 11 of the identification code card 2, and the data is added every time updating is performed, and the issuance of the paper vehicle inspection certificate is omitted.

Although the circuit illustrated in FIG. 2 has a configuration in which a signal radio wave is actively transmitted from the identification code card 2 to the data terminal 4, a circuit having a passive configuration may be used. In other words, a circuit having a passive configuration is one having a resonance circuit in the identification code card,
A radio wave signal is received from the data terminal, and the signal radio wave is reflected toward the data terminal depending on the presence or absence of a resonance state with the identification code signal called from the memory. The former configuration has the advantage that the receivable area is widened and the memory can be made relatively large in capacity, but requires a power supply. If a lithium battery is used as a power source, it can be used for about 10 years. With the latter circuit, the circuit can be operated by a weak signal current received from the data terminal, so no power supply is required, but the receivable area is narrower and the memory capacity is smaller than the former. Not get. Either circuit configuration has practically sufficient performance, and can be adopted according to the respective characteristics.

[Effect of the invention]

As described in detail above, in the vehicle wireless identification device of the present invention, the identification code card attached to the vehicle license plate is a vehicle registration information that is visible information in a limited space like a conventional license plate. Not only displaying numbers, but also having electrical memory,
A large amount of diversified information can be recorded.
Moreover, since the reading is performed using a radio wave signal as a communication medium, even if the plate is dirty regardless of day or night weather, it can be identified under almost all conditions, and each vehicle data is automatically collected. You can do it. In addition, since it has an identification code recorded in an electric circuit and a memory, forgery is extremely difficult.

Therefore, the widespread use of the vehicle wireless identification device of the present invention is very useful for vehicle management, such as elimination of traffic on highways and parking lots and efficient control of crime related to vehicles.

[Brief description of the drawings]

FIG. 1 is a front view of a license plate of a vehicle radio identification device to which the present invention is applied, and FIG. 2 is a block diagram showing an embodiment of a vehicle radio identification device to which the present invention is applied. DESCRIPTION OF SYMBOLS 1 ... License plate 2 ... Identification code card 4 ... Data terminal 6 ... Receiving antenna 7 ... Tuning amplifier circuit 8 ... Decoding circuit 10 ... Read control circuit 11 ... Memory 13 ... Code Generation circuit, 14 Modulation circuit, 15 Transmission circuit 16 Transmission antenna, 18 Transmission / reception antenna 19 Transmission / reception circuit, 20 Identification circuit 21 Data transfer circuit, 23 Host computer

Claims (1)

(57) [Scope of request for utility model registration] A host computer (23) which constantly oscillates a command for reading an identification code, has a transmission / reception circuit (19) for transmitting and receiving the identification code and data associated therewith.
, A transmitting circuit (15), a receiving circuit including a tuning amplifier circuit (7) and a decoding circuit (8), and an identification code stored in a non-rewritable manner. A rewritable memory (11), wherein the receiving circuit uses the identification code received from the data terminal (4) and the data accompanying the identification code to store the data in the memory (1).
An identification code card (2) attached to a license plate (1) of a vehicle in which data accompanying the identification code stored in the partial area of (1) is rewritten. Vehicle wireless identification device.