What is the thermal design in PCB processing? What aspects do we need to understand this problem from? The use range of thermocouple temperature measurement is very wide, and the problems encountered are also diverse. Therefore, this chapter can only cover several important aspects of thermocouple temperature measurement. Thermocouples are still one of the main means of temperature measurement in many industries, especially in the steelmaking and petrochemical industries. However, with the advancement of electronics, the application of resistance thermometers in industry has become increasingly widespread, and thermocouples are no longer the only and most important industrial thermometers.

　　The practical application of thermoelectric phenomena is, of course, the use of thermocouples to measure temperature. The complex relationship between electron energy and scattering results in different thermoelectric potentials of different metals. Since a thermocouple is such a device, the difference in thermoelectric potential between its two electrodes is an indication of the temperature difference between the hot and cold ends of the thermocouple. If the thermoelectric potential of all metals and alloys is different, it is impossible to use a thermocouple to measure temperature.

　　1: Establish encapsulation that is not present in the encapsulation library. Before designing a PCB board diagram, if a component in the schematic diagram cannot find a packaging model in the packaging library, it is necessary to use the Component Packaging Model Editor to create a new one. It is necessary to ensure that the packaging model of the used component is complete in the packaging library (which can be multiple library files) to ensure the smooth progress of PCB design.

　　2: Set PCB board design parameters. According to the needs of circuit system design, set the number of layers, size, color, etc. of the PCB board.

　　3: Load the network table. Load the network table generated from the schematic diagram and automatically load the component packaging model into the PCB design window.

　　4: Layout. A combination of automatic and manual layout methods can be used to place the component packaging model in an appropriate position within the PCB planning range, making the component layout neat, aesthetically pleasing, and conducive to wiring.

　　5: Wiring. Set wiring design rules and start automatic wiring. If the wiring is not completely successful, manual adjustments can be made.

　　6: Design Rule Check. Conduct design planning checks on the completed PCB board (checking for component overlap, network short circuits, etc.), and make modifications based on the error report if there are any errors.

　　7: PCB board sampling simulation analysis. Simulate and analyze the signal processing of PCB boards, mainly analyzing the impact of layout and wiring on various parameters, in order to improve and modify them.

　　8: Save the output. The designed PCB board diagram can be saved, layered printed, and PCB design files can be output.