S-shaped pitot tube based wind direction and velocity measurement device and method

Abstract

The invention belongs to the technical field of electric appliance control and coal mine safety, and relates to an S-shaped pitot tube based wind direction and velocity measurement device and method used for monitoring gas back flow in coal mine environments with explosive gases such as coal dust and the gas. The measurement device comprises an S-shaped pitot tube, reducing direct connections, a differential pressure transducer and a microcontroller. By the device and method, the problem that wind velocity transducers widely used in the field of coal mine safety monitoring at present can only measure unidirectional wind velocity and cannot judge wind directions is solved; by the design according to the differential pressure principle, a present wind current can be accurately judged whether to be ingoing wind or outgoing wind, and the wind velocity can be measured accurately. Besides, the device and method is not just limited to the field of coal mine safety monitoring, but also applicable to measurement of bidirectional wind speed in pipeline forms. The device is free of movable parts, simple and reliable in structure, accurate in measurement, good in long-term stability, high in anti-electromagnetic interference capability, dustproof and anti-blocking, and suitable for high-humidity and high-dust-content underground environments.

Description

technical field [0001] The invention belongs to the technical field of electrical control and coal mine safety, and relates to a wind direction and wind speed measurement device and method based on an S-shaped pitot tube for monitoring gas counterflow in an underground coal mine environment with explosive gases such as coal dust and gas. . Background technique [0002] Coal and gas outburst accidents will lead to gas reverse flow, and the gas reverse flow can be accurately judged by monitoring wind direction and wind speed. Therefore, the monitoring of wind direction and wind speed is an important means to predict and monitor coal and gas outburst. [0003] At present, the wind speed sensors widely used in the field of coal mine safety monitoring can only measure the wind speed in one direction, cannot judge the wind direction, and have poor anti-electromagnetic interference ability. Moreover, there is no wind direction and wind speed measuring device based on the S-type p...

AI Technical Summary

Problems solved by technology

[0003] At present, the wind speed sensor widely used in the field of coal mine safety monitoring can only measure the wind speed in one direction, cannot judge the wind direction, and has poor anti-electromagnetic interference ability

Moreover, there is no wind direction and wind speed measuring device based on the S-type pitot tube design of the differential pressure principle

Images