A sensor structure for a wheel axle recognizer, a wheel axle recognition method and system

Abstract

The invention discloses a sensor structure used for an axle recognizer. The sensor structure comprises N pressure sensors. The N pressure sensors are arranged in a linear array mode. The distance X between every two adjacent pressure sensors is smaller than Dmin-W and smaller than the W, and d is smaller than or equal to X / 2, wherein the Dmin is the minimum dual-tire interval of a vehicle, the d is the diameter of the sensors, and the W is the effective landing width of the tires of the vehicle. Meanwhile, the invention further discloses an axle recognizing system and method with the sensor structure. The axle recognizing system comprises the sensor structure, N operational amplifiers, N comparators, a single chip microcomputer and a master control instrument, each pressure sensor is connected with one operational amplifier, each operational amplifier is connected with one comparator, each comparator is connected with an I / O interface of the single chip microcomputer, and the single chip microcomputer is connected with the master control instrument. According to the sensor structure and the axle recognizing system and method, either the number of the tires is one or two can be judged by judging whether signals generated by the sensors are continuous or not; the link that voltage signals are converted into digital signals through a traditional A / D conversion module is omitted, and the hardware cost of the A / D conversion module can be saved.

Description

technical field [0001] The invention relates to the field of measurement methods, in particular to a sensor structure for wheel axle identification, a wheel axle identification method and a system. Background technique [0002] With the development of the country's economy and the acceleration of urbanization, the ratio of large and medium-sized freight vehicles in transportation is increasing day by day, the traffic volume is rising rapidly, and the phenomenon of vehicle overloading and exceeding the limit is becoming more and more common and serious. In 2000, the Ministry of Communications promulgated the No. 2 Order "Regulations on the Administration of Over-limited Transport Vehicles Driving on Highways" and the "Implementation Plan for Carrying Out Over-limited and Overloaded Vehicles in the Country" jointly issued by seven ministries and commissions of the country (Jiao Gonglu Fa (2004) No. 219 ), which stipulates the use of economic and administrative means to carry o...

AI Technical Summary

Problems solved by technology

This judgment principle needs to determine the three numbers m, n, k in advance. Since the effective ground width of various types of vehicle tires and the distance between twin tires are different, the three values ​​of m, n, and k are not easy to choose, and there is no uniform standard, resulting in various The manufacturer's tire recognition accuracy has a large deviation

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