Infrared thermal imaging using infrared band signal detection object specific heat radiation of photoelectric technology, the signal is converted into available Human can visual resolution images and graphics, and can be used for calculating the temperature value with IR LED. Infrared thermal imaging technology to make human transcendence The visual impairment, thus people can “see” the object surface temperature distribution.The surface temperature of objects if more than absolute zero (0K) will radiate electromagnetic wave, with the change of temperature, the radiation of electromagnetic wave The intensity and wavelength distribution has changed, the wavelength range of 0.75 mu m to 1000 mu m electromagnetic wave between called “infrared”, While the human visual “visible” from 0.4 mu m to 0.75 mu m. Infrared transmission in the surface, will be affected by the composition of the atmosphere Substance (especially H2O, CO2, CH4, N2O, O3 etc.) absorption, strength decreased obviously, only in the short wave 3 mu ~5 mu m and Two bands of long wavelength 8~12 m has better penetration rate (Transmission), commonly known as the atmospheric window (Atmospheric Window), most of the infrared thermal imager is based on these two bands were detected, calculate and display the temperature of the object surface The degree distribution. In addition, because the infrared to great part of the solid and liquid material penetration ability range, so the thermal infrared Imaging detection is based on the infrared radiation energy measurement of the surface of the object oriented.Predictive maintenance test Predictive maintenance detection is the potential failure factors and pre detection diagnostic equipment, have the objective of maintenance work according to the plan. This maintenance test operation not only improve the reliability of equipment operation, and reduce maintenance costs and working time of equipment, reduce equipment Preparation of excessive maintenance problems. Infrared thermography technology also have non destructive detection, non-contact measurement, The intuitive observation, immunity to electromagnetic interference, quick measurement, high sensitivity characteristics, is the most effective predictive maintenance work.Abnormal equipment, usually show some signs, such as vibration, sound, electricity, light, temperature, pressure, different Measurement of other physical quantities, for finding and diagnosing the problem. Many equipment abnormal display may be in the early stage The temperature difference between the perceived, and infrared thermal imaging is a detection method of measuring temperature, thermal image and temperature will be measured Value according to the structure and properties of the device, to discover and diagnose problems, suggestions of improvement scheme.