Film platinum resistor temperature sensor for measuring skin temperature accurately

Abstract

A film platinum resistor temperature sensor for measuring skin temperature accurately belongs to the heat comfort research and measuring technology field. The sensor in the invention comprises a film platinum resistor, a polyimides substrate and external wires; the film platinum resistor is disposed on the upper surface of the polyimides substrate, with the two electrodes welded to the electrodes corresponding to the polyimides substrate; and the sensor is connected with data acquisition instrument by electroplating wires and external wires. The invention improves the original contact skin temperature measuring method greatly, fully utilizes the advantages of good skin contact property, good stability, high precision and excellent dynamic performance of the film platinum resistor to measure the skin temperature accurately, controls the sensor measurement error within 0.1 degree centigrade by means of heat simulation research and experiment with finite element method, improves the whole measurement precision of skin temperature, and provides experiment base to the heat comfort physiology index research.

Description

technical field [0001] The invention relates to a thin-film platinum resistance temperature sensor, in particular to a thin-film platinum resistance temperature sensor for accurately measuring the skin temperature required for multi-point high-precision measurement of human skin temperature physiological parameters in thermal comfort research, which belongs to thermal comfort research and measurement technology field. Background technique [0002] Skin surface temperature is a physiological state value formed by the heat exchange between the human body and the surrounding environment. It has a good correlation with the body temperature, and it is also one of the important indicators for evaluating the temperature of the environment. Therefore, skin temperature measurement is widely used in medical physiological research, pathological detection, and ergonomic research, especially in the field of thermal comfort research as a key physiological index. At present, thermal comfo...

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Problems solved by technology

Its disadvantage is that there is a colloidal material between the sensor and the measured object that cannot be directly contacted, and the structure only considers the small size of the sensor and the convenience of temperature measurement on the surface, without analyzing its heat transfer error and improving its structure

There are temperature sensors on the market that use thermistors fixed on the substrate to eliminate the heat transfer error of the wires and indirect external wires through electroplating wires, but none of them consider that the substrate can be isolated from the external thermal environment through reasonable setting of the structural size in the measurement of skin surface temperature. influence

There are currently many skin thermometer products using thermistors in foreign countries. They are casing armored structures. The products are mainly used for pathological detection of certain body parts. point measurement

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