The LF refining furnace automatic temperature measurement device and its control system is composed of drive components,temperature measurement components,cooling components,computer control system and so on.The device is an electromechanical and gas integrated control device,which can be widely applied to industrial high temperature measurement environment with its unique temperature measurement method and cooling advantage.Because the traditional thermocouple temperature measurement method is point temperature measurement,and easy to consume.Therefore,this paper takes into account the influence of the operating environment of the equipment,based on the three-state cooling device,combined with high temperature infrared temperature measurement technology,to form the final automatic temperature measurement device.On this basis,the control system of the LF refining furnace automatic temperature measurement device is studied.This paper investigates the basic conditions of the automatic temperature measurement device in a high-temperature environment by means of mechanical and circuit-related methods.The model was then constructed using Solid Works.Fluid was also used to build the control circuit,simulate the operation of the circuit,as well as the use of Siemens PLC with STEP7-Micro WIN software to achieve the device drive control.The overall structure of the device was finalised.This paper also provides a modular design for the device,so that the device can meet the needs of different workplaces through the change and combination of modules.The automatic temperature measurement device must identify the object to be detected before it can be used for temperature measurement.The system model is simplified and the control strategy is optimised to reduce the impact of such problems on the performance of the device.The Simulink module in MATLAB is used to simulate the tracking system and to compare the operation of the system with PID control and with the addition of fuzzy control.Machine vision is also introduced as an auxiliary tracking and positioning measure,allowing the device to automatically locate the inspection window by tracking the liquid level of the steel.The results collected in the practical application process show that the device and the system are well suited to the normal operation of the temperature measurement device.Finally,on the basis of the structure of the device and its control system,a supporting software system is built to realise the automatic temperature measurement and real-time monitoring of the device.This paper shows that,within a certain high temperature range,the use of cooling devices,temperature measurement devices,tracking system under the combination of the three main components of the automatic temperature measurement device can be a good solution to the high temperature situation of the steel without contact,the surface temperature measurement problem. |