JPH0512291A - Radio card system - Google Patents

Abstract

PURPOSE:To transmit and receive data without being affected with the type of a vehicle and other radio antennas by embedding the radio antenna of a charging place, etc., to a road surface and communicating with a radio card or an antenna for the card fitted to the lower part of the vehicle. CONSTITUTION:A transmission/reception controller 2 always emits a question wave with a radio wave upward from the road surface through a road surface antenna 1. When the vehicle 10 enters a lane where the radio antenna of the charging place, etc., is embedded and approaches the road surface antenna, the card antenna 3 at the outward/lower part of the vehicle 10 receives the question wave. The question wave is sent from the card antenna 3 to a card reading/writing device 4, which informs combination with the road surface antenna 1 to the radio card 5. Thus, combining the radio card 5 with a radio card system by the radio wave is completed. As a distance to the radio card antenna becomes fixed corresponding to the type of the vehicle in the system, the transmission/reception of data is not affected with the type of a vehicle or the entry situation of the vehicle and the affection of interruption between adjacent lanes can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless card system for collecting tolls of vehicles traveling on toll roads by using a wireless card.

[0002]

2. Description of the Related Art In recent years, there has been realized a system in which a wireless card is mounted on a vehicle to drive on a toll road such as an expressway, and a toll is collected by using wireless. In these systems, a wireless card is mounted on the dashboard of the traveling vehicle or on the front window. A pole installed on the tollgate island or a wireless antenna attached to a canopy at the tollgate and a wireless card in the vehicle exchange necessary data to collect the fee.

[0003]

In the conventional wireless card system, since the wireless card is mounted on the dashboard or windshield of the vehicle, the height of the vehicle body of the approaching vehicle and the mounting position of the card. In some cases, such as when data cannot be transmitted to and received from the tollgate radio antenna, or when passenger cars continuously enter after a cold storage vehicle, the following vehicle will pass to the vehicle ahead from the tollgate radio antenna. However, there was a problem that the radio wave was blocked and the radio wave did not reach the wireless card of the following vehicle. In addition, when the wireless antenna at the tollgate is installed on the island, there is a problem that interference occurs between wireless antennas in adjacent lanes. Furthermore, there is a problem in that the construction of installing the wireless antenna at the tollgate on the island or canopy is costly and difficult to maintain.

The present invention has been made in view of the above circumstances. By burying a wireless antenna at a tollgate or the like on the road surface and communicating with a wireless card or a card antenna mounted below the vehicle, the vehicle type or other It is an object of the present invention to provide a wireless card system capable of transmitting and receiving data without being affected by the wireless antenna.

[0005]

In order to solve the above problems, the present invention provides a receiving means that is embedded in a road surface of a road and is mounted on a vehicle to receive the information from a storage medium that stores information on the vehicle. The detection means detects the vehicle based on the information received by the reception means.

[0006]

[Function] A wireless antenna such as a toll gate is buried in the road surface on which the vehicle passes, and the wireless card or the wireless card antenna is attached to the lower part of the vehicle. By communicating data between this wireless antenna and a wireless card or wireless card antenna, radio waves do not reach due to the difference in height of the wireless card depending on the type of vehicle, and due to the mutual influence of vehicles that continuously enter. It is possible to solve the problem of communication failure or interference between wireless antennas in adjacent lanes.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a plan view showing a tollgate where the wireless card system of the present invention is installed, and FIG.
2 is a partial cross-sectional side view of the toll booth of FIG. 1 with 0 passing. The road surface antenna 1 is embedded in the road surface 12 of each lane of the tollgate, and is connected to the transmission / reception control device 2 installed on the island 11. The road surface antenna 1 is formed in a loop shape, for example, and is buried at a predetermined position on the road surface with a predetermined depth as shown in FIG. Although the vehicle 10 entering the toll gate passes over the road surface antenna 1, the card antenna 3 is attached to the lower outside of the vehicle 10 such as below the license plate of the vehicle 10. Inside the vehicle 10, a card reading / writing device 4 and a wireless card 5 are mounted as described later.

FIG. 3 is a block diagram showing the configuration of an embodiment of the wireless card system of the present invention. The wireless card system includes a data processing device 6 connected to the transmission / reception control device 2 in addition to the road surface antenna 1 and the transmission / reception control device 2 already shown in FIG. The transmission / reception control device 2 processes data transmitted and received by the road surface antenna 1. The data processing device 6 is further connected to an external host computer (not shown). The vehicle 10 communicating with this wireless card system is equipped with the card antenna 3, the card reading / writing device 4, and the non-contact card 5 as described above. The card antenna 3 is connected to the card reading / writing device 4 and performs wireless data transmission / reception with the road surface antenna 1. Card reading / writing device 4 and non-contact card 5
And are configured to be able to send and receive data without contact. Since the card reading / writing device 4 and the non-contact card 5 use the data transmission / reception method of the short-distance electromagnetic coupling method, the card 5 can be freely carried. In addition, since the card 5 is connected in a non-contact manner, the vehicle 10
Less susceptible to vibrations and exhaust gas. The contactless card 5 has a read / write function. Wireless card 5 is I
It can be composed of a magnetic card such as a C card, a credit card or a prepaid card, an optical card and the like.

Next, the operation of the wireless card system of the present invention will be described with reference to FIGS.

The transmission / reception control device 2 constantly emits an interrogation wave by radio waves from the road surface upward through the road surface antenna 1. When the vehicle 10 enters the lane in which the road surface antenna 1 is embedded such as a tollgate and approaches the road surface antenna 1, the card antenna 3 of the vehicle 10 receives the interrogation wave. The interrogation wave is sent from the card antenna 3 to the card reading / writing device 4, and the card reading / writing device 4 notifies the wireless card 5 of the coupling with the road surface antenna 1. This completes the radio wave coupling between the wireless card 5 and the wireless card system.

Upon completion of the coupling, the contactless card 5 passes the card ID number recorded therein through the card reading / writing device 4 and the card antenna 3 to the road antenna 1.
Send to. The transmission / reception control device 2 converts the received card ID number and necessary data, and transmits the data to the host computer via the data processing device 6. The host computer performs charge deduction processing such as credit card processing based on the sent card ID number and necessary data.

[0013]

As described above, according to the present invention,
By embedding a wireless antenna on the road surface and communicating with the wireless card installed in the vehicle, the distance between the road surface antenna and the wireless card of the vehicle or the wireless card antenna becomes constant depending on the vehicle type. It is not affected by the situation, and the influence of interference between adjacent lanes can be reduced, so that data transmission / reception can be stabilized. Furthermore, the installation of the antenna can be facilitated.

[Brief description of drawings]

FIG. 1 is a plan view showing a tollgate where a wireless card system of the present invention is installed.

FIG. 2 is a partial cross-sectional side view of the tollgate of FIG.

FIG. 3 is a block diagram showing the configuration of an embodiment of a wireless card system of the present invention.

[Explanation of symbols]

 1 road surface antenna 2 transmission / reception control device 3 card antenna 4 card reading / writing device 5 non-contact card 6 data processing device 10 vehicle 11 island 12 road surface

Claims (1)

Claim: What is claimed is: 1. Receiving means for receiving the information from a storage medium that is buried in the road surface of the road and is installed in the vehicle and that stores information about the vehicle, and the receiving means based on the information received by the receiving means. A wireless card system comprising: a detection unit that detects a vehicle.