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An instantaneous monitoring system for underground tunnel cross sections

A technology for monitoring systems and underground roadways, applied in cross-section drawing, measuring devices, surveying and navigation, etc., can solve problems such as inaccurate measurement, large manpower, material resources, and existing errors

Active Publication Date: 2014-11-12
HENAN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the roadway section measurement we used was manual measurement, which required a lot of manpower and material resources, wasted time and effort, and the measurement was inaccurate and there were errors.

Method used

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  • An instantaneous monitoring system for underground tunnel cross sections
  • An instantaneous monitoring system for underground tunnel cross sections
  • An instantaneous monitoring system for underground tunnel cross sections

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] In the instantaneous detection system of the section area of ​​the underground roadway, the zero return button (22), the motor start button (23), the motor stop button (24), the motor sensor switch (25), and the pulse distance meter switch (26) are respectively connected to the PLCcpu224XP (18), and they will be connected to DC24V (28) jointly. Motor sensor (35) is controlled by sensor switch (25), and mine-used pulse type laser rangefinder (38) is controlled by rangefinder switch (26) control. The motor sensor (35) will be pulled up to 240Ω and then powered by a 24V switching power supply (37). The mine-used intrinsically safe intelligent pressure sensor (32) communicates with analog input points M (29) and A+ (30) through a DC10V transmitter (31). SH-2024 stepper motor driver (1) is powered by DC24V switching power supply, the switching power supply is connected to Vcc (2), and the driver passes through A+(4), A-(5), B+(6), B-(7) An interface controls the operation ...

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Abstract

An instantaneous monitoring system for underground tunnel cross sections, which can avoid contact between people and hazardous environments and largely improve measurement precision, is provided. The system adopts PLC224XP as a main controller. A stepper motor driver is connected and used for controlling rotation of a stepper motor, rotation of the stepper motor can drive an impulse laser geodimeter to rotate, and two high-speed counters in the PLC send impulse with different frequencies, so that the instantaneous cross-section area measurement and monitoring can be achieved. An upper computer of the system can accurately and instantaneously display the area of the cross sections. The system has significant meaning for underground tunnel cross section values and the change rule in research of ventilation resistance measurement.

Description

technical field [0001] The invention relates to the field of coal mine safety, and is a high-precision roadway section monitoring system in the field of mine ventilation. Background technique [0002] Due to the complex geological structure of the mine and the influence of objective conditions such as mine pressure, the section of the roadway is prone to deformation. Due to the irregularity of the deformation, the distribution of the air volume in the mine shaft is affected. In the past, the roadway section measurement we used was manual measurement, which required a lot of manpower and material resources, wasted time and effort, and the measurement was inaccurate and there were errors. The change of section is not only an important parameter in the calculation of mine ventilation resistance, but also an important parameter in the study of mine pressure appearance law. There is an urgent need for a monitoring system that can accurately measure the cross-sectional area of ​​...

Claims

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Application Information

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IPC IPC(8): G01C7/06G01B11/28
CPCG01B11/28G01C7/06
Inventor 鲁忠良丛喜宾李长春付腾张颖芳徐亚辉王宠惠杨楠柯贾德祥肖保利宋志杰贾二广卢惠召王洪丽
Owner HENAN POLYTECHNIC UNIV
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