Intelligent precise mining barometer

Abstract

The invention provides an intelligent precise mining barometer. The intelligent precise mining barometer can conduct communication in real time and read data simultaneously in different places. An 89C51 single-chip microcomputer is used as a master controller of the intelligent precise mining barometer. Two pulses with different frequencies are generated through a shunt-resonant circuit which is connected with the 89C51 single-chip microcomputer externally. One of a measurer A and a measurer B needs to reach a measurement site, and then a communication pulse can be emitted. When the measurer A reaches a destination, the pulse at the first frequency is emitted by the barometer of the measurer A and used as a communication pulse, and the communication pulse is transmitted to the measurer B through a wireless transmitting device; if the measurer B does not reach the destination, the pulse at the first frequency will be transmitted to the measurer A, and the measurer A is informed that the measurer B does not reach the destination; if the measurer B reaches the destination, the barometer of the measurer B will transmit the pulse at the second frequency to the measurer A, the pulse at the second frequency is used as a measurement pulse, the barometer of the measurer B counts down to measure the pressure according to the set time, the barometer of the measurer A counts down to measure the pressure through calculation of time difference finally after receiving the pulse, and therefore simultaneous pressure measurement is achieved.

Description

technical field [0001] The invention relates to the field of coal mine safety, and is a digital and intelligent precision barometer in the field of mine ventilation. Background technique [0002] At present, mine ventilation is a major issue related to the life safety and production safety of underground workers. It provides personnel to breathe, dilute and remove toxic and harmful gases and coal dust from the working surface, creating a good working environment. Due to the unevenness of the roadway surface and support, resistance is generated, and energy is consumed when there is resistance, so that air can be continuously entered and discharged. The resistance between the two sections is now measured by using a pressure measuring instrument to comprehensively calculate the difference in static pressure readings, the potential pressure difference between the two sections, and the dynamic pressure difference between the two sections. One of the factors that determines the ...

AI Technical Summary

Problems solved by technology

Whether the static pressure reading difference between two sections of the pressure measuring instrument can be read at the same time is one of the factors that determine the accuracy of the resistance between the two sections, because the atmospheric pressure changes instantaneously, and the two instruments cannot read at the same time

At present, readings are repeated transposition to eliminate errors caused by simultaneous readings, which is time-consuming, laborious, large errors, and low efficiency. Therefore, there is an urgent need for an intelligent precision barometer that can realize real-time communication and measure static pressure at two points at the same time.

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