A safety detection circuit and detection method for the control button of a mining transfer withdrawal machine

Abstract

The invention relates to a safety detection circuit and a detection method of a control button of a mine switch machine. The safety detection circuit includes a microprocessor, a frequency signal detection circuit, a level signal detection circuit and a mining button. In the frequency signal detection circuit, the input and output ends of the microprocessor are interactively connected with the input and output ends of the microprocessor, and the input and output ends are connected with mining buttons through mine cables. In the level signal detection circuit, its input and output ends are connected with mine buttons through a mine cable, and its output end is connected with the input end of a microprocessor. It can be seen from the above technical solutions that the present invention uses the frequency signal detection circuit and the level signal detection circuit to perform double safety detection on the mine button, which can effectively solve the false detection caused by the mine button shaking and contact adhesion. The safety detection of the control button of the mine transfer withdrawal machine is realized at a lower circuit cost.

Description

technical field [0001] The invention relates to the field of on-site control of mining equipment, in particular to a safety detection circuit and a detection method of a control button of a mining transfer and removal machine. Background technique [0002] At the mine site, the mine switch machine, as a device for pulling the turnout, plays a very important role in the transportation of materials and personnel. Usually, the mine switch machine is connected to the transportation monitoring system, and the system will control the mine switch machine to automatically pull the switch according to the current needs. However, when the monitoring system is not used or the monitoring system is abnormal, it is necessary to operate the mine switch machine on site. [0003] At this time, the control button of the mining transfer machine, referred to as the mining button, is very important as a simple and effective control method. At present, the commonly used mining switch machine co...

AI Technical Summary

Problems solved by technology

At present, the commonly used mining switch machine control button works as follows: when the external force makes the contact of the mining button close, the circuit of the mining button is turned on. The button is effective; when the distance between the mine button and the mine switch machine is long, or the mine button is immersed in water and the contact resistance is small, it is easy to misdetect. The commonly used method is to increase the voltage of the mine button circuit or Current value, this method not only increases the power consumption of the equipment, in special fields such as coal mines, this increase in power consumption will lead to an increase in the explosion-proof and intrinsic safety requirements of the equipment, and increase the equipment cost

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