Intelligent monitoring and early-warning system for settlement in subway operation on basis of PSD (Position Sensitive Detector) sensor

Abstract

The invention discloses an intelligent monitoring and early-warning system for settlement in subway operation on the basis of a PSD (Position Sensitive Detector) sensor. The intelligent monitoring and early-warning system comprises an industrial control machine, a process control interface card PCI, a PLC (Programmable Logic Controller), a PSD photoelectric position sensor, an automatic shrinkage and protection device, a high-quality laser transmitter, data acquisition hardware, a signal conditioner, wireless transmission equipment and a comprehensive evaluation and early-warning device. The method comprises the following steps that (1) a computer-control main platform in the industrial control machine sends the instructions to the PLC to control the working of the laser transmitter, the PSD sensor and the data acquisition hardware; (2) the data acquisition hardware transmits acquired data to the computer-control main platform by the wireless transmission equipment; (3) the industrial control machine analyzes data results by a real-time data analysis module; and (4) the data analysis results are transmitted to the comprehensive evaluation and early-warning device and early warning is sent out by comparison and analysis of actual measurement values and normative standard values. The intelligent monitoring and early-warning system disclosed by the invention can consider the actual condition of the operating subway, is high in measurement accuracy and less in disturbance of the environment, and has the advantages of being dynamic, real-time, scientific and convenient.

Description

technical field [0001] The present invention relates to a subway operation subsidence intelligent monitoring and early warning system based on PSD sensors, more specifically to PSD photoelectric position sensors, wireless control and transmission technology, and also to a comprehensive evaluation and early warning technology, especially suitable for monitoring accuracy and automation Projects with higher requirements: real-time monitoring and early warning of subway tunnel settlement during the operation period. Background technique [0002] The development and utilization of urban underground space has become a worldwide development trend, and it is used as an important symbol to measure urban modernization. The development and formation of urban underground space network depends on the urban underground rail transit system. Therefore, the large-scale construction of urban rail transit projects marked by subways is imperative. As of May 2013, the operating mileage of urban...

AI Technical Summary

Problems solved by technology

[0003] Different from highway and railway tunnels, the operation monitoring of subway tunnels has its own characteristics: (1) The mileage of subway tunnels is generally long, up to dozens of kilometers, and the monitoring workload is extremely large; The work is easily disturbed by the environment; (3) The subsidence monitoring accuracy requirements for subway operation are high; (4) The monitoring and measurement work cannot affect the normal operation and operation safety of the subway

Among the existing measurement methods: the leveling accuracy is high, but its degree of automation is not high; and the non-contact measurement method represented by the total station measurement, the accuracy is difficult to meet the accuracy requirements of the subway settlement; and the existing subway settlement In the measurement method, the measurement data are mostly the relative settlement and deformation of the tunnel segment, which cannot reflect the overall settlement of the tunnel, and there are potential safety hazards

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