Industrial computers can be divided into three categories according to their application properties:
（1） Board type: including single board computer (SBC), embedded board, black plane and pc/104 module.
（2） Subsystem: it includes the functional subsystems that combine single board computers, machine boards, chassis, power supplies and other peripherals, such as industrial servers and workstations.
（3） System integration solution: refers to a complete set of systems developed for a professional field, including the required software, hardware and peripherals, such as automatic teller machines (ATMS).
Industrial computers are widely used in ATM, POS, medical electronic equipment, game console, game equipment, etc. the industrial aspects of many fields make industrial computers must be able to withstand the use environment of sunshine, high and low temperature, humidity, etc., so the relevant reliability test is the focus of various manufacturers in the research and development test.
Common reliability tests of industrial computers:
（1） Wide temperature test:
1. Outdoor: especially in areas with extreme low or high temperature, such as northern Europe and desert countries, the temperature range can be -50~70 ° C
2. Confined space: for example, where heat sources will be generated, such as near the boiler, the high temperature range is about 70 ° C
3. Mobile equipment: such as on-board equipment, the high temperature can reach 90 ° C4 according to the automobile area Special harsh environment: such as aerospace equipment, military industry, oilfield drilling equipment
（2） Aging stress test: the temperature range is -40 ° c-85 ° C, and the temperature change rate is 10 ℃ per minute for cyclic test
（3） Windless high temperature test: at present, in order to prevent dust, industrial computers are planned to be closed and fan free in the mechanism design meeting, so more and more manufacturers begin to pay attention to the high temperature test in the windless environment to ensure that the high temperature will not crash
