Comprehensive test system

Abstract

The invention belongs to the technical field of sensors, and discloses a multi-sensor comprehensive test system for health monitoring on bridges, towers and high-rise buildings. The comprehensive test system comprises sensors, a data acquisition device, a on-site data monitoring terminal, a network port and a remote client terminal, wherein the sensors include an acceleration sensor, a vibrating wire sensor and a full-bridge resistance strain sensor; and the vibrating wire sensor checks the full-bridge resistance strain sensor and records conditions of long-term slow sinking, force bearing and the like of buildings, and the acceleration sensor triggers and closes the full-bridge resistance strain sensor. With cooperation of the sensors at each part and an acquisition module in the system, the function of comprehensive test is realized, and by the application of the acceleration sensor, the problem that the full-bridge strain sensor is always in a high-speed acquisition state is solved, and thus the comprehensive test system can be widely used for various buildings, and can detailedly record and reflect some geological disaster information in time so as to save financial and material resources for latter health analysis.

Description

technical field [0001] The invention belongs to the technical field of sensors, and more specifically relates to a multi-sensor comprehensive test system suitable for health monitoring of bridges, towers and high-rise buildings. Background technique [0002] Usually, a sensor can only be used to detect one kind of physical quantity, but in many application fields, in order to perfectly and accurately reflect objective things and environments, it is often necessary to measure a large number of physical quantities at the same time. A multifunctional sensor composed of several sensitive elements is a new generation of detection system with small size and multiple functions. It can rely on different physical structures or chemical substances in sensitive elements and their different characterization methods. Use a single sensor system to simultaneously realize the measurement functions of multiple sensors. [0003] The health monitoring of bridges, towers, and high-rise buildin...

AI Technical Summary

Problems solved by technology

[0004] In the patent CN 101603868 A, a high-accuracy vibrating wire pressure sensor is disclosed, which mainly changes the diameter of the deformable membrane boss of the existing working membrane into 60%-90% of the diameter of the deformable membrane; There is an extension section in the direction of the hydraulic joint. A blind hole to the deformable membrane is processed on the extension section. Internal threads are processed on the wall of the blind hole or external threads are processed on the peripheral surface of the extension section. The hydraulic joint and the hydraulic joint are realized through internal threads or external threads. The threaded connection of the extension section, this sensor can achieve high-accuracy detection, but cannot achieve the measurement of parameters such as acceleration, and cannot achieve the purpose of comprehensive measurement

[0005] In order to achieve comprehensive measurement, the current domestic practice, through the summary processing of multiple separate parts, cannot achieve timely response in time, and the real-time performance is poor

If the full-bridge strain sensor is always in the high-speed acquisition state, in addition to affecting the life of the sensor, it will also increase the energy consumption of the entire system

For a long-term monitoring system, it will bring loss of manpower and financial resources, and with the monitoring time, the sensitivity and accuracy of the sensor will also undergo a series of changes

Images