Dynamic electronic mini-size unmanned weighing instrument of double-hole cantilever beam strain gauge

Abstract

The present invention provides a dynamic electronic mini-size unmanned weighing instrument of a double-hole cantilever beam strain gauge. The instrument comprises a resistance-type strain sensor system, a voltage signal amplification circuit, an A / D data collection and conversion circuit, a controller, a resistance strain gauge measurement circuit, a display, an information input device and a weighing instrument health condition and monitoring system. The resistance-type strain sensor system selects resistance strain gauges as the sensitive elements of a weighing sensor, the cantilever beams of the resistance strain gauges employ a double-hole beam structure, a plate-shaped beam is provided with two square holes, and the resistance strain gauges are pasted at the inner walls of the two holes to allow the four resistance strain gauges to be divide into two sets in pair and be located in opposite stress areas.

Description

technical field [0001] The invention relates to weighing technology, in particular to a dynamic electronic small unmanned vehicle scale with double-hole cantilever beam strain gauges. Background technique [0002] Electronic unmanned vehicle scale is a new type of electronic weighing instrument, which has the characteristics of rapid weighing, high accuracy, intuitive display and complete functions. It is suitable for unmanned vehicles in industrial, commercial, construction, warehousing, logistics and freight, or In a broad sense, the measurement of unmanned intelligent transportation equipment is an ideal measuring instrument. The dynamic unmanned vehicle scale is an automatic scale that can weigh the total weight or axle load of a dynamic unmanned vehicle in motion through the vehicle weighing method or the axle load (non-complete vehicle) weighing method. The shape of the dynamic unmanned vehicle scale for vehicle weighing is the same as that of the static electronic un...

AI Technical Summary

Problems solved by technology

[0003] Some unmanned vehicles are used in the logistics industry. They are small in size, convenient in operation, and efficient. However, their trade settlement mainly relies on weighing sensors, and because their freight signals are small, and the transportation in this case requires low cost for electronic scales, The precision must be high. In addition, for unmanned vehicles, the service life of the weighing instrument and the unattended alarm function are very important. Therefore, in view of the defects that the strain gauges in the existing weighing instruments are easy to be damaged and have no alarm function, it is necessary to design a new type. Electronic scales for unmanned vehicles

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