Mine dust concentration sensor based on electrostatic induction

Abstract

The invention provides a mine dust concentration sensor based on electrostatic induction. The mine dust concentration sensor comprises a metal support, a metal shielding cover, an insulating tube, a left sealing ring, a right sealing ring, metal electrodes, a fan outer cover, a fan and a circuit box, wherein the metal shielding cover and the insulating tube are buckled through the left sealing ring and the right sealing ring, a sealed shielding space is formed between the insulating tube and the metal shielding cover, the insulating tube forms a straight-through type air channel, the fan outer cover is fixedly connected at the right end of the metal shielding cover, the fan is positioned in the fan outer cover, three metal electrodes are connected through metal connection plates and arranged in a groove formed in the inner wall of the insulating tube, the metal support is connected with the ground in a shielding mode, the circuit box above the metal shielding cover is provided with a control circuit module, and the induction signals of the metal electrodes can output dust concentration monitoring signals through the control circuit module. The mine dust concentration sensor effectively solves the problem that the flexibility of the sensor is reduced due to dust adhesion, dust accumulation and dust distribution change on the surface of a probe, can well overcome the defects of an optical sensor and is high in antijamming capacity, high in flexibility and simple in structure.

Description

technical field [0001] The invention relates to detection technology, in particular to a mine dust concentration sensor based on electrostatic induction. Background technique [0002] Dust is one of the main disasters in coal mines. Long-term inhalation can cause pneumoconiosis, and dust is explosive, causing safety hazards to coal mine production. Therefore, it is necessary to carry out accurate and real-time detection of underground dust in coal mines to grasp the change of underground dust concentration. The dust sensor commonly used at present is a laser scattering sensor, which is easy to operate and has a fast measurement speed. However, this type of sensor uses the optical principle, dust is easy to accumulate on the optical lens, and the lens needs to be cleaned regularly, otherwise the sensitivity of the sensor will be reduced, and the air duct inside the light scattering sensor is too complicated, and it is easy to deposit dust and block the air duct , affect the...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the technical defects of the prior art, provide a sensor that can effectively solve the problem of reduced sensitivity of the sensor caused by dust adhesion, accumulation, distribution changes, etc. on the surface, and can well overcome the shortcomings of optical sensors, anti-interference A mine dust concentration sensor based on electrostatic induction with strong capability and high sensitivity and simple structure

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