Automatic toll collection system in the hottest tr

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Automatic toll collection system in transportation system in recent years, with the vigorous development of highway transportation, the highway toll collection system has begun to develop from manual to automatic, effectively reducing the vehicle congestion rate at toll collection places such as roads and bridges. However, at present, there are still some unsatisfactory aspects in various toll collection systems. Some magnetic card or contact IC card systems require that vehicles must stop before charging. The automatic toll collection system that transmits the data in the smart card through infrared mode is an effective and feasible method to solve the problem of automatic toll collection of expressway, and realizes the non-stop toll collection of expressway. It can effectively solve the problem of vehicle congestion at the highway toll collection, and has strong practicability

the infrared smart card charging system includes the infrared transceiver of the vehicle, the infrared transceiver of the toll station and the management system of the management department. The infrared transceiver of the vehicle is composed of smart card interface circuit, infrared transmitting circuit, infrared receiving circuit and single chip microcomputer control circuit; The infrared transceiver of toll station is composed of infrared transmitting circuit, infrared receiving circuit, microcomputer interface circuit and microcomputer; The management system of the management department consists of a microcomputer, an IC card reader and a set of corresponding management software. The infrared transceiver of the vehicle is installed in the driver's cab. When the vehicle passes through the toll station, the driver will insert the smart card with a certain amount of money and vehicle information purchased in advance from the management department into the smart card adapter of the vehicle, press the on key, the system will be in the receiving state after reading the amount in the IC card, and the infrared receiving circuit in the vehicle will be in the receiving state after receiving the request signal from the toll station, After transmitting the amount and information in the IC card through the infrared transmitting circuit, it is in the state of waiting for receiving. After receiving, the received balance information from the toll station is stored in the IC card. The toll collection system of the toll station is in the sending request state at the beginning. When the receiving circuit receives the infrared information sent by the vehicle, it will be demodulated and sent to the microcomputer. The information of the vehicle will be queried through the database, the toll will be deducted, the balance will be sent to the vehicle through the transmitting circuit, and the database data will be modified. If the balance is found to be insufficient to pay the toll (the balance is negative), the alarm will be notified. The whole communication system is in half duplex state. The management system of the management department mainly completes the functions of card issuance, card sales, query, statistics, summary, etc., and can increase or decrease the functions according to the actual needs

nbsp; The infrared transmitting and receiving device controls the transmitting power to make the receiving distance reach more than 10m, which can be adjusted according to the specific conditions of the toll station. It can work normally under direct sunlight. In the operation of the whole system, only the card writing process takes a lot of time, but the card writing process can be carried out after the vehicle passes through the charging point (beyond the emission range of the infrared transmitting tube), so it has little impact on the vehicle speed. It can be seen that this automatic toll collection scheme will greatly solve the toll collection problem in expressway

(II) road and Bridge non-stop electronic automatic toll collection system

with the rapid development of the national economy, the reform of bridge toll management method has been put on the agenda. Increasing the passing speed of vehicles, reducing the detention time of vehicles, reducing the loss of fuel, tires and parts of passing vehicles, and improving the charging efficiency are urgent requirements for highway traffic in modern cities, and are also important aspects of environmental pollution control. The automatic non-stop toll collection system is an integral part of the modernization of highway transportation and a powerful measure to solve the problem of bridge toll collection. It can also eliminate the phenomenon of less, missing, no or random collection and embezzlement of tickets caused by manual toll collection and cash transactions

a prototype of an electronic automatic toll collection system without stopping on roads and bridges has been simulated and demonstrated, and it is recommended to put it into practical application. The road and Bridge electronic automatic toll collection computer system is mainly composed of two parts: intersection vehicle detection system (multiple) and toll management system., When the vehicle passes through the lane of the toll station, the vehicle detection system at the intersection detects the incoming vehicle through the infrared wall, and then starts the economic operation of the extruder industry in China. Several positive signals have appeared to stimulate the antenna to send electromagnetic waves. The passive transponder on the vehicle generates a response signal with the excited electromagnetic wave energy, which is captured by the receiving antenna and sent to the transceiver reader to generate the information code of the vehicle, and then sent to the toll management system. The toll management system collects the working information of each intersection detection station in real time, processes the information of each intersection detection station, looks up the corresponding user information in the toll computer according to the vehicle information code sent by the vehicle detection station at each intersection, and deducts this fee from the road (bridge) fee paid by the vehicle user in advance according to the vehicle model specified in advance, so as to complete an automatic toll collection operation under the condition that the vehicle does not stop. For special vehicles that pass legally free of charge, the traffic information shall be recorded, but the fee shall not be deducted. Vehicles without vehicle transponder (including vehicles with exhausted expenses) shall drive into a special parking toll lane and pay for parking with traditional cash or IC card; If the vehicle without transponder drives through the road of toll station, the system will automatically start the camera to record the vehicle's brand and store it in the computer. At the same time, the system will notify the personnel on duty of the information. The signal light will stop the alarm, and the driver will pull over to pay. The toll management system will also handle the outdoor large-scale traffic display and sound generation system to inform the vehicle cost

intersection vehicle detection system: the intersection vehicle detection system consists of on-board transponder (vehicle model, tonnage and license plate number stored therein), infrared wall detection, excitation, wireless transceiver antenna, code reader and auxiliary equipment. Its working principle is to use the data exchange between the on-board transponder and the wireless transceiver of the vehicle detection station at the intersection through radio waves to identify the users who belong to the vehicle. According to the technical indicators of the on-board transponder and reader and our actual experiments, the system can accurately capture the information of (5) continuous experimental fixture or multi-functional fixture when the vehicle speed is lower than 65km/d

schematic diagram of road and Bridge non-stop toll collection device

vehicle mounted transponder uses low-frequency transmission in communication and has strong air permeability. The reading distance can reach 0.5 ~ 3M (depending on different types of Balise), and the data information in the balise on the high-speed moving object (vehicle) can be read. The transponder is a subminiature transmitting device composed of micro power consumption integrated circuit, information storage ROM and transmitting circuit, which means that lighter and stronger components and components can be put into the market faster. The power used is transmitted and supplied by the excitation antenna installed on the road (similar to the traditional mineral radio), so there is no need to install batteries. We use glass

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