Automatic Processing Research And Design Of The Control System Of Medical Waste

China has large of population, can be produced thousands of tons of medical waste each year, most of these wastes rely on landfill underground or simple burning garbage mixed with no classification, will cause cross-infection or a latent source of infection, personal safety is very unfavorable. Incineration of medical waste has developed rapidly in recent years, because of its less pollution, reduce the size, conservation of land, etc. were the major cities in China have reference. Now burning technology into the hearth incineration, fluidized bed incineration, gasification, pyrolysis incineration, etc. Either incineration method only incinerator in the process to improve, improve the burning of the decomposition rate for the whole process. control still uses artificial-site operation, the traditional ways of working not only inefficient, the harsh conditions of the working environment on the operation of the workers is also a harm, this design is based on the already burning, dust, purification process based on the automation of the process to reach the remote control, monitoring the effect.The system’s hardware control segment consists of the main frame of the ControlLogix system1794FLEX I/O sub-station, PC, ABPowerFlex7series inverter, motor, fan. PLC mainly to complete the signal acquisition and device control system to perform a device. Including the incinerator furnace pressure monitoring, temperature monitoring of the combustion chamber, with fan wind speed monitoring the hoist speed monitoring liquid level monitoring of the pump, the monitoring of the amount of smoke in the air vents, etc., received by the the console1794FLEX I/O sub-station acquisition to the signal through DeviceNET fieldbus transmission to the ControlLogix controllers. ABPowerFlex7series inverter as a control signal from the controller to make the operator to give through ControlNET fieldbus. Primarily responsible for host computer and the PLC communications, monitor the status of the entire control system. AB vector converter to receive a given signal to control the operation of pumps, fans and other frequency control drive motor speed and direction, according to a given size and plus or minus. Temperature and pressure sensor module of the PID loop control, pressure and temperature to control the speed of induced draft fan, the export side of the site boiler thermocouple tuning into a0-600degree temperature signal, the sampling signal as a PLC control, PID will as a benchmark, the host computer’s settings to regulate the fan frequency reaches the set temperature.The design portion of the system software including PC management and monitoring program design, PLC control program design and communication procedures between them. Between PC and the next bit machine communication using a three-tier network architecture. The host computer using the generic configuration software RSView SE as a development platform. Realization of the monitoring system and the various parameters of the acquisition system equipment function, rendering statements or contrast map. The system uses ContronLogix-Series control system, between the PLC and the implementation of devices using the RS485communication interface. Its programming with RSLOGIX5000, the PLC is mainly responsible for collecting the signal of the analog switch, and the comparison output by PID control algorithm is used to achieve automatic control of the inverter, the induced draft fan, rapper, fuel nozzle, pumps and other equipment.This design uses a programmable control system of the AB, the design of automatic control, frequency control technology for medical waste disposal process to proceed from the hardware, software, and design a complete set of automatic control system, and has been at the scene test run, the actual effect is more ideal, good communication between each device, the system running smoothly.