Bridge deflection measuring method based on synchronous processing after non-synchronous acquisition of multiple tilt angle sensors

Abstract

The invention belongs to the technical field of tilt angle sensor measurement, and relates to a bridge deflection measuring method based on synchronous processing after non-synchronous acquisition ofmultiple tilt angle sensors. The method comprises the following steps: S1, the multiple tilt angle sensors are arranged on a bridge and are connected with an acquisition instrument, and acquisition frequencies of the tilt angle sensors are set; S2, under a load action, a bridge structure is subjected to dynamic deformation with a relatively stable deflection deformation mean value, the multiple tilt angle sensors are used for measuring a change value of the dynamic deformation of the bridge structure, and non-synchronous acquisition data of the tilt angle sensors is obtained; S3, interpolationsynchronization is performed on the non-synchronous acquisition data of the multiple tilt angle sensors in a software mode; and S4, a deflection curve of the bridge structure is obtained based on thedata subjected to the interpolation synchronization through deflection conversion. According to the method, the measurement efficiency can be effectively improved, and the cost of the instrument canbe reduced; and by software processing, the synchronization of measurement data is indirectly realized through interpolation, so that the implementation cost is low, and the efficiency is relatively high.

Description

technical field [0001] The invention belongs to the technical field of inclination sensor measurement, and relates to a method for measuring bridge deflection after asynchronous acquisition by multi-inclination sensors and synchronous processing. Background technique [0002] Inclination sensors are also known as tilt sensors, goniometers or slope sensors. The theoretical basis of the tilt sensor is Newton's second law. When the sensor has no acceleration in the lateral and vertical directions, only the acceleration of gravity acts on it, and the angle between the vertical axis of gravity and the sensitive axis of the acceleration sensor is the tilt angle. [0003] As an electronic instrument, the inclination sensor is collected by data communication, which is generally divided into synchronous communication and asynchronous communication. These two different communication methods lead to two ways of data acquisition by the sensor: synchronous acquisition and asynchronous a...

AI Technical Summary

Problems solved by technology

Synchronous communication needs to rely on the clock signal, so there is a problem, who will initiate the clock signal? In synchronous communication, it is often necessary to set a clock signal reading module, so that the sensor can collect data at equal time intervals, but such a setting increases the cost of the sensor hardware, and the sensor needs to process a large amount of time series data, which greatly reduces the efficiency of measurement

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