The film forming control system of the pvd coating machine can be guessed from the name. It should be the coating system that monitors and controls the coating process during the coating process of the coating machine, so that the coating engineer can ensure that the entire coating process can be smooth. Finished coating.

       At present, there are many application methods for film monitoring of pvd coating machine, mainly including: visual monitoring method, fixed (extreme) value monitoring, crystal oscillation monitoring, time monitoring and so on. I mainly introduce three kinds of visual monitoring, fixed (extreme) monitoring and crystal oscillation monitoring.
       Visual monitoring is also called direct monitoring, which is to use eye monitoring, because during the growth of the film, there will be color changes due to interference phenomena. We control the film thickness according to the color changes. This method has certain errors, so it is not Very accurate, it needs to rely on experience.
       The electrical control part mainly adopts PLC automatic control, that is, the pre-designed program is first input in the PLC, and the main circuit of the processor is connected with each empty driving system on the operation panel. When the switch on the operation panel is pressed, the information is transmitted to the The central processing unit is then analyzed by the central control system and sends out instructions to execute and complete the action by the branch.
       Coating machine is a multi-disciplinary equipment, which integrates the most advanced electromechanical technology in today's industry, control technology, electrical automation, IT technology, refrigeration technology, microcircuit integration system, high-voltage control system, mechanical technology, processing technology, optoelectronic technology , optical technology, pneumatic control technology, photoelectric sensing technology, communication technology, vacuum technology, thin film optics and coating technology, etc.
       It can be said that the coating machine is a representative of the emerging industry.
       Today, pvd coating machines have been widely used, especially for coating thin films. Various thin films made by them are used in various optoelectronic systems and optical instruments, such as digital cameras, digital video cameras, telescopes, projectors, energy control, light Communication, display technology, interferometer, satellite missile, semiconductor laser, micro-electromechanical system, information industry, laser production, various filters, lighting industry, sensor, architectural glass, automobile industry, decorations, coins, spectacle lenses Wait, the coating machine has been closely related to human life.