Piezoelectric ceramic sensor for dynamic weighing and load positioning of cement pavement vehicle

Abstract

The invention provides a piezoelectric ceramic sensor for dynamic weighing and load positioning of a cement pavement vehicle, and belongs to the technical field of sensors. The sensor comprises a connector, a wiring groove, wires, packaging grooves, piezoelectric ceramic pieces, stainless steel gaskets and piezoelectric grooves, the connector is arranged at the end of the sensor, the wiring groove is formed in the rear portion of the connector, the wires are arranged in the packaging grooves, the packaging grooves are formed in the two sides of the interior of the sensor, and the piezoelectric ceramic pieces are arranged in the sensor at equal intervals. And the piezoelectric ceramic pieces are fixed in the piezoelectric grooves through the stainless steel gaskets. The sensor is long in service life, dustproof, waterproof, simple in structure, convenient to construct, low in cost and stable in performance, can be used for traffic speed measurement, dynamic weighing and unbalance loading measurement, can also roughly judge the load acting position and monitor the road surface wheel track transverse distribution coefficient, and provides data support for the long-term service performance of the road surface. The sensor can be widely popularized in vehicle traffic dynamic weighing systems and road long-term service performance monitoring.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a piezoelectric ceramic sensor used for dynamic weighing and load positioning of vehicles on cement roads. Background technique [0002] With the continuous development of social economy, there are more trucks on expressways, and the traffic flow is also increasing with the increase of roads. Due to the existence of problems such as large traffic volume and serious overloading, the annual loss of national highways due to vehicle overloading exceeds 30 billion Yuan, causing huge losses to state property. How to use accurate, practical and complete vehicle dynamic load cells to measure various parameters of vehicles in motion to accurately measure the real axle load of vehicles to meet the actual needs of traffic managers, prevent vehicle overloading and reduce traffic accidents , to promote the development of my country's highway management, has become an important issue. [0003...

AI Technical Summary

Problems solved by technology

The load cells used in the expressway weight toll system used in China mainly include bent plate load cells and vehicle load cells. These two vehicle weighing systems have disadvantages such as high cost, serious damage to the road surface, and difficult maintenance in the later stage. , which limits its widespread use

Although the piezoelectric quartz dynamic weighing system can be used for high-speed dynamic weighing, it has high requirements on the road surface and needs to be rebuilt on the entire road surface. In addition, the existing dynamic weighing system cannot realize the positioning function of the position of the axle load, which limits It is difficult to use for further scientific research because of the application in fine road management, intelligent perception and interactive scenarios

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