Self-powered detection device and method for road vehicle weighing

Abstract

Disclosed are a self-powered detection device and method for road vehicle weighing. A displacement device, a piezoelectric module and a displacement detection device are arranged between a panel and abearing base body, the piezoelectric module converts pressure into electric power to supply power to a sensor and a control unit, piezoelectric waveform signals generated when all shafts pass by aresent to the control unit, the number of vehicle shafts and shaft weight information are sensed based on piezoelectric signal response characteristics, the output sensitivity is high, the waveform response characteristics are remarkable, the real-time transmission effect is stable, meanwhile the state of a vehicle during weighing is represented through the displacement amount and the acceleration value of the panel, whether the vehicle jumps from a weighbridge or not is judged, fee evasion of the vehicle is avoided, the defect that it is difficult for an existing weighing device to recognize the weighbridge jumping behavior of a full-load truck is effectively overcome, self-energizing of the detection device is achieved through the piezoelectric power generation technology, a new clean energy supply way in the field of road engineering is effectively broadened, and traditional energy consumption is reduced.

Description

technical field [0001] The patent of the invention belongs to the field of road engineering and relates to vehicle weighing detection, in particular to a self-powered detection device and detection method for road vehicle weighing. Background technique [0002] In order to comprehensively and effectively control the over-limit and overloaded transportation behavior of expressway trucks, and further ensure the safety and convenience of road transportation, since 2020, the whole country will uniformly implement the weighing inspection of expressway entrances according to the vehicle (axle) type. Currently, the axle group type weighing detection equipment With its advantages of large weighing range, high precision and wide application, it is widely used. [0003] The work of the existing weighing equipment depends on the traditional power supply, and it is a common problem that the ability to effectively identify the "jumping" behavior of a fully loaded truck is poor. "Jumping"...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the existing vehicle weighing equipment cannot identify the vehicle's jumping scale and the measurement is inaccurate, the present invention provides a self-powered detection device and detection method for road vehicle weighing, which has a simple structure and is easy to operate. Accurate and fully automatic detection, at the same time, it can realize the self-supply energy of the equipment through self-generation technology, effectively reduce the energy consumption of the power grid, and can be applied to the weighing detection at the entrance of expressway toll stations

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