An Automatic Measuring System Based on Atmospherical Measurement Used for Temperature Relay For temperature relay, it is very important to measure its temperatures for action and reversion. In this paper, anautomatic measuring system based on atmospherical measurement is discussed, which is very simple andprecise in practical application. In atmospherical measurement, it is crucial to design a favorable temperaturefield. The resistance stove is designed for simulating temperature field. The even temperature is improved bylong-time warm-up and placing orifice-board in testing room. According to the enactment controlling temperature curve, the algorithm of fuzzy control is used to control the temperature in temperature field. The regulating voltage mode of double-direction Bi-directional thyristors is used for controlling temperature. The system consists of the console and the resistance stove，and the console includes software platform and hardware platform. In this system, The method of grouping the resistance wire of resistance stove according to the power is put forward, and the performance of resistance stove is improved based on this method. The measuring precision is improved by using the minimum two-multiplication to calibrate the error. At present, the system has been practically applied in manufacture, which has gained obvious economy benefit and will be widely applied in the future. 1. Introduction The temperature relay is one of common relays, which takes action when the outside temperature arrives at the given temperature. The temperature relay performs lots of functions, such as temperature control, fire alarm, automatic ignition, wiring heat-protection, so it is widely used in scientific research, industry...
