JPH02159700A - Id plate - Google Patents

Abstract

PURPOSE:To check an ID number and to prevent a vehicle from illegally entering into a specific area by storing the ID number inherent in each plate and a changeable vehicle number and transmitting these numbers through radio waves in response to a call inputted from a road antenna. CONSTITUTION:In order to add at least a part of number plate information to be inherent information in each vehicle to ID plate information in addition to only an ID number to be a simple numeral string, a number plate information storing part 28 such as a exclusive ROM for storing vehicle number plate information is included in the ID plate to independently store the number plate information. Signals from the storing part 28 and an ID number storing part 27 are synthesized in a prescribed format by an ID information synthesizing part 29 and a signal from the synthesizing part 29 is transmitted from a plate antenna part 32 as a radio wave in response to a call from a road antenna part 12. Consequently, whether a vehicle can be entered into a specific area or not can be identified and the generation of illegal entrance can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is an I/V device used in an automatic vehicle identification device for identifying whether or not a vehicle can enter a specific area such as a toll road or a toll parking lot.
Regarding D plate.

BACKGROUND ART Conventionally, this type of ID plate is an ID plate having a unique ID (identification) number, as shown in, for example, [Traffic Engineering] Vol. 21, No. 2, pp. 26-29 (published by the Traffic Engineering Research Group). is mounted on a vehicle, etc., and when passing through on-road facilities such as ID plate readers installed at checkpoints at gates such as toll gates, the I
Automatic communication or automatic response is carried out between the D plate and the roadside facility. As a result, the unique ID number stored or written on the ID plate mounted on the vehicle is recognized by the roadside facility, and necessary identification processing such as vehicle type discrimination and automatic toll collection processing on toll roads or special areas etc. Vehicles permitted to enter the area will be identified.

Problems to be Solved by the Invention However, although it is possible to identify the unique ID number of an ID plate with conventional automatic vehicle identification devices, it is difficult to determine whether the ID plate is actually installed on the contracted vehicle or whether it is being used illegally. Confirmation could not be performed automatically. In other words, in a contract for automatic toll collection on toll roads, even if an ID plate contracted for a small vehicle is used on a large vehicle to falsify the difference in toll, automatic identification confirmation is impossible. there were.

The present invention solves these conventional problems and provides an excellent and highly reliable vehicle identification device that can automatically confirm whether or not the ID plate is properly installed and used in the vehicle covered by this contract. The purpose is to provide ID plates for use.

Means for Solving the Problems In order to achieve the above object, the present invention includes ID plate information that includes not only an ID number as a simple numerical string, but also license plate information as unique information of the vehicle (vehicle model code, 4-digit serial number, etc.). ), and a dedicated ROM for storing the vehicle license plate information.
Alternatively, a license plate information storage section such as a constant setting section for converting into a setting constant is provided to independently store license plate information.

Operation The present invention has the following effects due to the above-described configuration. That is, by adding at least a part of the vehicle license plate information to the ID grade information, the ID plate can be verified by comparing the license plate information in the ID plate with the actual vehicle license plate information at checkpoints such as toll road toll gates. It becomes possible to determine whether or not the ID plate is being used legitimately in the vehicle in which it should be installed, and it becomes possible to prevent unauthorized use of the ID plate.

In addition, because the license plate information is configured to be stored independently in a dedicated license plate information storage section, it is possible to easily store different vehicle license plate information for each user, and the license plate information storage section can be stored separately. By configuring it as a ROM or a constant setting section, it has excellent stability against disturbance factors.

Embodiment FIG. 2 shows the structure of an automobile identification device using an ID plate according to an embodiment of the present invention. In FIG. 2, numeral 11 is a plate reading section, and roadside antenna section 1
2, a communication processing section 13, and an ID number identification section 14, each of which is coupled as shown in the figure.

Reference numeral 15 denotes a license plate reading unit, which is composed of an imaging unit 16, an image processing unit 17, and a license plate identification unit 18, each of which is coupled as shown. The ID plate reading section 11 and the license plate reading section 15 are each coupled to a comparison and verification section 19, the comparison and verification section 19 is coupled to communication control sections 20 and 21, and furthermore, the communication control section 20 is coupled to a fee calculation processing section 22,
The communication control section 21 is coupled to an illegal traffic handling section 23, respectively.

Next, the operation of the above embodiment will be explained. In the above embodiment, the ID plate reading unit 11 reads the ID mounted on the vehicle.
The D plate 24 and the road antenna section 12 receive ID number information via wireless etc., and the ID number information is received via the communication processing section 13.
The number identification section 14 identifies the ID number information and the number plate information such as the vehicle model code and four-digit serial number included in at least a part of the ID number information, and the comparison and verification section 19 transmits the number plate information.

In the license plate reading unit 15, the image capturing unit 16 captures an image of the license plate of the traveling vehicle 25, and the image processing unit 17
A license plate identification unit I8 identifies license plate information such as a vehicle model code and a four-digit serial number among the license plate information, and transmits the information to a comparison and verification unit 19. The comparison/verification section 19 compares and collates each license plate information sent from the ID number identification section 14 and the license plate identification section 18, and if the comparison information matches, it is determined to be positive and the information is sent via the communication control section 20. The vehicle passing information is transmitted to the fare calculation processing unit 22, and a fare calculation process according to the required vehicle type classification etc. is executed. Furthermore, if the comparison information does not match, the comparison and verification unit 19 makes a negative determination and sends the information to the illegal traffic handling unit 23 via the communication control unit 21, and performs operations such as closing the gate or taking an image of the illegally passing vehicle (both shown in the figure). Take necessary measures (not shown).

In this way, according to the above embodiment, the ID plate reading section]
It becomes possible to identify in real time the official license plate information on which the ID plate 24 should originally be attached obtained from 1, and the vehicle license plate information on which the ID plate is actually attached obtained from the license plate reading section 15, and to compare and check. By comparing and determining each number plate information in the section 19, it is possible to prevent unauthorized use of the ID plate or to determine failure of the ID plate in real time, which is an excellent effect.

For example, license plate information may be written on the ID plate 24 as part of the ID number at the same time as a series of ID numbers such as a 10-digit numerical string, or the original vehicle code, vehicle model code, etc.
The license plate information itself, such as the usage code and 4-digit serial number, may be used as the ID number.

FIG. 3 is an image diagram showing a configuration example of the roadside equipment according to the embodiment described in FIG. 2. In the figure, the ID plate (2) installed on the vehicle (phase) exchanges information with the antenna section (2) using wireless means, and the imaging section O is configured to take an image of the license plate (phase).

FIG. 1 shows an example of the structure of the ID plate of the present invention. In response to the call from the roadside antenna 12, the ID plate 24 retrieves a unique ID number string as a series of numerical values from the ID number storage section 27 and license plate information from the license plate information storage section 28, and then outputs the ID information synthesis section 2.
9, a series of ID number information is created by combining the unique ID number string and license plate information, and the modulated signal generator 30
- A response signal is transmitted from the modulation section 31 and the ID plate antenna section 32 to the roadside antenna 12.

In this embodiment, at least a portion of the ID number information written on the ID plate body is included in the vehicle to which the ID plate should originally be installed (for example, a vehicle with an automatic toll collection contract such as a toll road,
By accumulating license plate information of vehicles (vehicles etc. that are permitted to enter the security zone), it is possible to achieve an extremely excellent security effect.

In particular, by increasing the number plate information storage unit 28 to 80M or by configuring it as a constant setting unit such as a setting bin switch, it goes without saying that the reliability of the stored information is superior to the case where it is stored as RAM information. stomach.

Furthermore, by configuring the license plate information storage section 28 as an independent ROM or constant setting section,
Vehicle license plate information can be flexibly set according to usage circumstances, and can be overlapped with ID information as a series of numerical values stored in the ID number storage unit 27 when the ID plate 24 is manufactured at a factory or the like. This provides an excellent effect of improving security and IJT performance as well as flexibility of license plate information.

Furthermore, it goes without saying that it is preferable to configure the license plate information storage section 28 so that the information cannot be rewritten once the information has been stored, from the viewpoint of ensuring security. Therefore, it is clear that it is desirable to take measures such as, for example, making the diameter 20M non-removable after writing and setting, or fixing the set diameter in the constant setting section.

Effects of the Invention As is clear from the above embodiment, the present invention has a structure in which an ID number unique to the plate and a changeable vehicle number are stored, and these numbers are wirelessly transmitted in response to a call from a roadside antenna. Therefore, by receiving these numbers with a roadside antenna, checking the ID number, and comparing the vehicle number from the ID plate with the actual vehicle number, it is possible to prevent unauthorized entry into a specific area. have an effect.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an ID plate according to an embodiment of the present invention, Fig. 2 is a block diagram of a vehicle identification device using this embodiment, and Fig. 3 is a perspective view of roadside equipment using this embodiment. be. 12... road antenna part, 24... ID plate,
27... ID number storage section, 28... License plate information storage section, 29... ID information synthesis section, 30... Modulation signal generation section, 31... Modulation section, 32... Plate antenna Department. Name of agent: Patent attorney Shigetaka Awano and one other person Figure W

Claims (1)

[Claims] an ID number storage section that stores a unique number of the plate; a license plate information storage section that stores a changeable vehicle number of a vehicle on which the plate is mounted; and a signal of the license plate information storage section and the ID number storage section. An ID plate comprising an ID information synthesis section that synthesizes the information into a predetermined format, and a modulated signal generation section that wirelessly transmits a signal from the ID information synthesis section from the plate antenna section in response to a call from a roadside antenna.