Wireless communication technology-based bridge strain monitoring system and method

Abstract

The invention discloses a wireless communication technology-based bridge strain monitoring system and method. The system comprises a plurality of vibration wire type strain sensors, a plurality of vibration wire type reading gages, a receiver and a computer, wherein the vibration wire type strain sensors are arranged on the surface of a bridge bottom plate or web plate; the plurality of vibration wire type reading gages are connected with the plurality of vibration wire type strain sensors through wires in a one-to-one correspondence manner, and the receiver is connected with the computer through an interface circuit; each vibration wire type reading gage is connected with a first wireless communication module, the receiver is connected with a second wireless communication module, and the first wireless communication module and the second wireless communication module form a wireless sensor network. The bridge strain monitoring system is simple in structure, flexible and convenient to distribute and not limited by terrain environments, the defects of a cable laying mode are overcome, a great amount of manpower and material resources can be saved, the data is automatically collected, manual intervention is not required, not only is the real-time property of collection guaranteed, but also the long-time dynamic monitoring is easily realized.

Description

technical field [0001] The invention relates to a bridge strain monitoring system, in particular to a bridge strain monitoring system and method based on wireless communication technology, belonging to the field of civil engineering strain monitoring. Background technique [0002] Static strain measurement is an important part of bridge static load test, and static strain directly reflects the local stress of the bridge under external loads, and is an important parameter of the health state of the bridge structure and an important indicator of the bridge safety assessment. Therefore, in bridge construction In operation, maintenance, real-time monitoring of bridge strain is of great significance to assess the health status of bridge structures. [0003] In the current engineering monitoring, the surveyor usually uses the data acquisition instrument to collect and record data from multiple monitoring points in sequence. Every time a sensor pre-embedded point is reached, the se...

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Problems solved by technology

[0003] In the current engineering monitoring, the surveyor usually uses the data acquisition instrument to collect and record data from multiple monitoring points in sequence. Every time a sensor pre-embedded point is reached, the sensor cable needs to be connected to the acquisition instrument, and then the data acquisition is performed. , the disadvantage of this method is that the operation is complicated and the cost of manual collection is high

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