RF control and attendace record system for cable car in mine

Abstract

The RF control and attendance record system for cable car in mine includes a PLC control box, coding RF card mounted in the safety helmet of miner, radio receiver in the cable car to receive RF signal within 1 m, microcomputerized substation connected to the output of the radio receiver and with control signal output connected to the PLC control box, and a mine computer with system management software and attendance record database and connected through data interface to the data signal output of the PLC control box. The present invention features the accurate information acquisition, integrated electric control and attendance record, etc.

Description

technical field [0001] The invention relates to an electric control system used on a mine overhead passenger device, in particular to an application method for realizing the integration of automatic control and work attendance by using radio frequency technology. Background technique [0002] At present, the electric control system of the mine overhead passenger device consists of a PLC control box, an operating console, control components, and detection signal components. The unattended function of the electronic control system detects the passenger signal by the passenger detection device. The occupant detection device composed of a deviation switch has low reliability and low sensitivity, often misses detection, and often automatically shuts down when there are still people on the seat, which seriously affects the miners' going up and down and the normal production order. The passenger detection device composed of infrared probes is too sensitive, the detection range is ...

AI Technical Summary

Problems solved by technology

The occupant detection device composed of a deviation switch has low reliability and low sensitivity, and often misses detection, and often automatically shuts down when there are still people on the seat, which seriously affects the miners' going up and down and the normal production order.

The passenger detection device composed of infrared probes is too sensitive, the detection range is large, and it is easy to make false detections. It often occurs that people who do not need to go down the well only need to walk in the infrared scanning range, and the cableway will automatically start, which is a waste of energy and unsafe.

In addition, the electronic control system and the attendance system are independent of each other, and the electronic control system cannot be used to check the number of people going down the well and know who the specific people going down the well are.