Scheme of Intelligent Public Transport Priority Control System Based on RFID Technology

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  1. Company profile

Zheyun Technology is composed of professional software, electronics and network engineers, committed to the development, production and sales of RFID applications, intelligent measurement management, intelligent public transport, power environment, security, IT system resource monitoring and other related products. At the same time, as NORTEL, AVAYA’s partners can provide complete, efficient and advanced communication solutions for the majority of enterprises and institutions.

The company provides personalized professional solutions and comprehensive technical support, and strives to develop deep and lasting customer relationships; through continuous innovation, efficient operation and fine management, it strives to provide customers with high-quality products and services, and constantly pursues customers, partners and The common development of the company.

  2. Demand analysis and overall goal of system construction

  2.1 Demand analysis

In the past 20 years, with the acceleration of urban construction in my country, the demand for urban traffic has also increased. Although the proportion of private cars and taxis is increasing year by year, public transportation is still the most important way for citizens to travel. The backwardness of public transport service facilities is indeed an old and difficult problem that has plagued the daily life of citizens for a long time. In recent years, local government departments have invested a lot of manpower and material resources to improve urban public transportation. With the construction of infrastructure and major projects, as well as the elimination, renewal and expansion of bus vehicles, the service capacity of urban transportation facilities has been gradually improved. Alleviated traffic problems. However, simple infrastructure construction and traffic control management technology can no longer meet people’s growing demand for public transport services.

In order to make traffic more convenient and smooth, the concept of Intelligent Transportation System (ITS) has attracted more and more attention. The system combines advanced computer processing technology, information technology, data communication transmission technology, automatic control technology, artificial intelligence and electronic technology, etc. Effectively and comprehensively apply it to the transportation management system, and establish a punctual, fast, and efficient transportation management system that can play a role in a large range in all directions.

Therefore, Zheyun Technology has launched an accurate and efficient bus priority control system, which provides management departments and government decision-making agencies with quick supervision and management tools and detailed and complete information, and provides favorable technical support for the implementation of bus rapid transit and bus priority policies. And guarantee.

  2.2 Design strategy and goals

  2.2.1 Design strategy

a. Real-time control

The system relies on the constantly changing information acquired for decision-making control. The system has the means to collect information such as vehicle location and intersection traffic status. On this basis, the reasonable control logic has good adaptability and effectiveness.

b. Fixed timing control

The system performs signal control in accordance with the normal conditions in a given area, and does not require frequent information collection and update. The system controls according to a preset plan instead of constantly changing traffic information. The conditions considered by the system are usually the traffic flow at the intersection in time intervals and the demand for buses to pass through the intersection.

c. Operation plan control

Priority decision-making is carried out based on the operation plan of the bus. There are many ways to combine signal control with the operation plan, such as referring to a static operation plan or a dynamic operation plan, which requires the signal control system to establish a reliable communication method with the bus operation company to ensure the plan. Timely transmission; the main difference from real-time control is that the system can not care about the specific vehicle location, and only rely on the operation plan to formulate the phase control plan for the intersection.

d. Vehicle interval control

Taking the time interval of bus passing through intersections as the control reference index to prevent the occurrence of car collusion, it can improve the transportation efficiency during the low peak period of passenger transportation, which is more suitable for the situation of good traffic conditions and low bus transportation demand, and has certain bus operation management The role of.

2.2.2 System design goals

a. Realize the identification of public transportation vehicles, and give priority to intersections with targeted vehicles;
b. Develop a complete signal priority plan to meet the bus priority needs in different situations;
c. Choose an appropriate priority strategy to increase the vehicle crossing rate;
d. Realize the coordinated control of vehicle operation plan and traffic signal.

  Three, the solution

  3.1 The core of the solution

The core element of the RFID public transportation priority control system is to ensure the priority of public transportation vehicles at intersections, thereby reducing the time for buses to pass signal lights and improving the efficiency of public transportation. Buses equipped with RFID identification equipment can transmit signals through the on-board long-distance RFID identification card, allowing the traffic signal control system to accurately identify the identity of the vehicle and the number of buses when the vehicle is approaching an intersection, and determine a reasonable amount according to the rules The green light is open time, so as to avoid the problem of frequent switching between red and green lights. According to the pre-set rules and procedures, the signal light control system will automatically adjust the opening time and length of the green light.

The long-distance RFID bus priority signal light management system can accurately determine the identity of the incoming vehicle, so that the green light will be turned on after the bus arrives at the intersection or waits a short time after arriving at the intersection, so as to ensure the priority of the bus and minimize the impact on other vehicles . As for other vehicles, even if they are driving on the bus lanes illegally, they cannot enjoy the priority of the green light, which provides the traffic control department with a good means of automated traffic management. When there are special tasks such as state guest reception, as long as the identification card is issued, the relevant vehicles can also enjoy the convenience of a green light all the way.

  3.2 Main structure


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