Distributed wireless network data acquisition system for multiple types of vibrating wire strain gauges

Abstract

The invention relates to a distributed wireless network data acquisition system for multiple types of vibrating wire strain gauges. The distributed wireless network data acquisition system comprises aplurality of collectors, wherein the collectors comprise strain gauge excitation units, A / D conversion units and micro-control chips; the strain gauge excitation units are connected with the micro-control chips and the vibrating wire strain gauges respectively; the A / D conversion units are connected with the micro-control chips and the vibrating wire strain gauges respectively; the micro-controlchips are connected with wireless transmission units and storage units respectively; and the micro-control chips perform sine wave excitation signal frequency parameter adjustment according to different types of vibrating wire strain gauges, and calculate corrected strain values by using different strain value calculation models. Compared with the prior art, the distributed wireless network data acquisition system has the advantages that the integrity and high efficiency of data transmission can be ensured; the operation cost of multiple sensors is reduced; the operation complexity of field operation is reduced; and the consistency of data acquired by different types of vibrating wire strain gauges is ensured.

Description

technical field [0001] The invention relates to the technical field of measuring devices, in particular to a multi-type vibrating wire strain gauge distributed wireless network data acquisition system. Background technique [0002] Due to the complexity of the circuit structure of the reading instrument, the vibrating wire strain gauge has been placed in the measurement environment as a separate device, which increases the complexity of sensor layout and data integration, such as sensor wiring and standard power supply for independent equipment. Moreover, since independent devices need to be controlled on the field panel, the controllability of the commands sent from the gateway to the entire network is also reduced. In addition, due to the different environments and buildings, the types of strain gauges that need to be installed and deployed during the measurement process are also different. The types of reading instruments are also different, and the consistency of the obt...

AI Technical Summary

Problems solved by technology

[0002] Due to the complexity of the circuit structure of the reading instrument, the vibrating wire strain gauge has been placed in the measurement environment as a separate device, which increases the complexity of sensor layout and data integration, such as sensor wiring and standard power supply for independent equipment. Moreover, since independent devices need to be controlled on the field panel, the controllability of the commands sent from the gateway to the entire network is also reduced. In addition, due to the different environments and buildings, the types of strain gauges that need to be installed and deployed during the measurement process are also different. The types of reading instruments are also different, and the consistency of the obtained data is poor

[0003] At present, most of the existing vibrating wire strain gauges provide the manufacturer with a measuring instrument corresponding to the strain gauge to measure the strain data of a strain gauge, or provide the manufacturer with the strain data of a multi-channel measuring instrument for multiple strain gauges of the same type. Read, this method is difficult to install, the installation cost is high, and the storage is difficult to transfer out in real time

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