A design method of mine safety monitoring system based on surface acoustic wave sensor

Abstract

The invention discloses a method for designing a mine safety monitoring system based on a surface acoustic wave sensor. The method comprises the following steps: 1. fabricating a delay line type surface acoustic wave device including a sensitive film; 2. selecting suitable parameters for forming an oscillation generating circuit 3. Select the appropriate parameters to form the low-frequency signal conditioning circuit; 4. The connection between the oscillation generating circuit and the low-frequency signal conditioning circuit; 5. The connection between the sensor group and the FPGA main controller; The method of the invention has simple steps, reasonable design, low power consumption of the designed mine safety monitoring system, improves the accurate monitoring of environmental parameters such as temperature, humidity, gas concentration in the mine, facilitates the accurate transmission of the mine environmental parameters to the monitoring center, and improves the performance of the mine. The accuracy of environmental detection and corresponding measures such as early warning are made to avoid the occurrence of safety accidents.

Description

technical field [0001] The invention belongs to the technical field of mine safety monitoring, in particular to a design method of a mine safety monitoring system based on a surface acoustic wave sensor. Background technique [0002] Analysis of the reasons for the occurrence of coal mine safety accidents in my country, in addition to the complex geological structure, harsh underground environment and other factors, the most important reason is that the environmental parameters such as underground temperature, humidity and gas concentration cannot be accurately monitored, and the environmental parameters of the mine cannot be accurately monitored. Sent to the monitoring center, it is impossible to predict the mine environment and make early warning and other measures, resulting in the occurrence of safety accidents. [0003] In addition, surface acoustic wave sensors have the advantages of high sensitivity, easy integration and wireless, which are in line with the future deve...

AI Technical Summary

Problems solved by technology

At present, the sensing system based on surface acoustic wave technology puts forward more stringent requirements on the matching circuit with the improvement of the sensitivity of the surface acoustic wave sensor. However, the common system stability of the current sensing system based on surface acoustic wave technology is not high Problems such as high power consumption and high power consumption can easily lead to false alarms and malfunctions of the sensor system

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