A platinum resistance temperature acquisition device

Abstract

The invention provides a platinum resistor temperature collection device. The platinum resistor temperature collection device comprises a constant flow source, a self-diagnosis and calibration moduleand a voltage collection module, wherein the constant flow source is used for providing constant direct current signals, the self-diagnosis and calibration module is connected with the constant flow source and a to-be-measured platinum resistor separately, and conducts error calibration and fault diagnosis based on the direct current signals provided by the constant flow source and the platinum resistor, the voltage collection module is connected with the self-diagnosis and calibration module, and the self-diagnosis and calibration module controls voltage signals for collecting the platinum resistor to achieve temperature collection. According to the platinum resistor temperature collection device, the purpose that the consistent error of the collection system under different temperature environments can be calculated, and fault self-diagnosis location is timely and accurately conducted when lines break down can be achieved.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to a platinum resistance temperature acquisition device. Background technique [0002] Temperature is an important measurement parameter in the process of industrial production and use. The accuracy of temperature measurement and calibration directly affects the quality of product production and product operation. With the development of measurement technology, the requirements for temperature measurement accuracy are getting higher and higher. For example, the error requirement of the water temperature sensor in the locomotive industry is within 1°C. [0003] Due to the simple working principle and simple design circuit, the platinum resistance temperature acquisition system is widely used in medical, electrical, industrial and other fields. However, the current mainstream platinum resistance temperature acquisition system (non-integrated circuit chip) does not have ...

AI Technical Summary

Problems solved by technology

However, the current mainstream platinum resistance temperature acquisition system (non-integrated circuit chip) does not have the function of circuit detection, especially in complex industrial environments, the line connection caused by vibration is unstable, and the faults caused by it are common.

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