Three comprehensive test chambers mainly provide temperature and humidity environment for scientific research and production units such as aerospace, aviation, petroleum, chemical industry, electronics, communications, etc. At the same time, electrical vibration stress can be applied to the test products in the test chamber at a prescribed period for users To conduct a comprehensive stress screening test of temperature, humidity, and vibration on the whole machine (or parts), electrical appliances, instruments, materials, etc., in order to assess the suitability of the test article or evaluate the behavior of the test article. Compared with the effect of a single factor, it can more truly reflect the adaptability of electrical and electronic products to the changes of temperature, humidity and vibration in the environment of transportation and actual use, and expose the defects of products. It is a new product development, prototype test, product qualification certification An important test method essential for the whole process of the test.
The emergence of digital technology has improved the measurement control accuracy, sensitivity, speed and reliability of the three comprehensive test chambers by several orders of magnitude, laying a good foundation for the realization of measurement control automation. The introduction of the computer has caused a qualitative change in the functions of the three comprehensive test chambers, from the measurement of individual parameters to the measurement of the characteristic parameters of the entire system, from simple reception and display to control, analysis, processing, calculation and display output. Change from measuring with a single instrument to measuring with a measuring system. In the 1990s, the scientific and technological breakthroughs of measurement control and three-combined test chambers were the improvement of the intelligence of three-combined test chambers; the large number of DSP chips came out, which greatly enhanced the digital signal processing function of three-combined test chambers; Three comprehensive test chambers have stronger data processing capabilities and image processing functions; fieldbus technology is a network communication technology for various field automation equipment and its control system that has rapidly developed in the 1990s. Internet and Intranet technologies will also Enter the field of control. The modern three-combination test chamber will be developed in the direction of digitization, networking, intelligence and integration. The interdisciplinary comprehensive design and sophisticated manufacturing technology enable it to obtain high-speed, more sensitive, more reliable and simpler. Analyze, detect and control all-round information of objects.
A large number of portable, hand-held and personalized three comprehensive test chambers have been developed. With the development of production and the improvement of people's living standards, people are paying more and more attention to their quality of life and health, and testing various products closely related to people's lives.
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