Design Of Winch Communication System Based On μCOS-Ⅱand Low-voltage Power Line Carrier

At present, the auxiliary transportation system of underground coal mine basically depends on winch, however, the technology of controlling the incline hoist is still relatively backward. The winch operator control the action of start and stop by hearing the number of beats.Although it is possible for the operator to communicate with the hook worker by inter-phone, there still exists cases of improper operation. The research of intelligent communication system for winch is extremely urgent, which has important application value and broad prospects.This thesis put forward a kind of winch communication system. According to the functional requirements of the winch communication system, the system structure diagram was drawn, and the working principle of the system was described briefly. The hardware components were introduced, the installation layout of hardware was analyzed, and the system power supply circuit, a micro-controller and its peripheral circuits, carrier circuit, amplifier circuit was designed. Winch communication system mainly consists of a controller and multiple sound and light signals. The winch controller locates on the top of the incline lane, the sound and light signals are installed along the incline lane according to the actual work requirements. Winch controller and sound and light signals adopt power line carrier technology, using the underground power line to transmit signals like beats, speech, etc. By this way, the complexity of wiring installation and saving communication costs were reduced. Sound and light signals and winch controllers are using the mainstream8-bit and32-bit micro-controller which provide a good protection for the realization of system functions.The system software was designed. By comparing the foreground and background system, System based on μCOS-Ⅱ architecture was adopted. The paper begin with the start-up mode, the distribution of systematic task was given, and detailed description of the task management was made, the communication application and human-computer interaction software were designed, and the transplant process of μCOS-Ⅱ was described detailed. By using the μCOS-Ⅱ real-time operating systems, the real-time of the task of multi-machine communication and other tasks were greatly improved, the control and management of the human-computer interaction software of the winch controller was optimized, meanwhile, The development efficiency of the system was improved.By comparing the viable methods of coal mine communication, this thesis innovated a kind of signal transfer manner by use low-voltage power line carrier communication. By analyzing the low-voltage power line carrier channel, comparing to the realization way of low-voltage power line carrier, the selection of the carrier means of communication was completed.Steps of debugging for the winch communication system were proceed in this thesis. Especially focus on the experimental debugging of the carrier circuit. The experimental results indicate that the system is capable of stable operation and performed well. At last, a conclusion was drawn and also put forward the prospect of further improving about the winch communication system.