Body temperature signal analog output device and method

Abstract

The invention provides a body temperature signal analog output device and method. The device comprises: a voltage source module, an adjustable resistance circuit and a detection circuit; two ends of the detection circuit are connected with two terminals of an interface of the output device respectively, and the detection circuit measures a circuit parameter value of the detecting device connectedto the interface; one end of the voltage source module is connected to one terminal of the interface, and the other end of the voltage source module is connected to one end of the adjustable resistance circuit; the other end of the adjustable resistance circuit is connected to the other terminal of the interface; and the output voltage of the voltage source module is adjustable. The voltage sourcemodule, the adjustable resistance circuit and the detecting device form a series access. The voltage value outputted by the voltage source module and the resistance value of the adjustable resistancecircuit are changed, so that the resistance value between the two terminals of the interface of the body temperature signal analog output device can be changed, and the continuous output of the resistance value can be realized.

Description

technical field [0001] The invention relates to the field of medical equipment, and more specifically, to a body temperature signal analog output device and method. Background technique [0002] Physiological signal simulation is mainly used for quality control and technical training of patient multi-parameter monitors. Body temperature signal is a common physiological signal. Temperature simulates body temperature. [0003] At present, the most common method for analog output of body temperature signal is to use several fixed high-precision resistors or use a potentiometer. High-precision resistors can simulate several specific temperature values, but cannot achieve continuous output of temperature values, and there are various types of existing temperature monitoring probes, and the resistance values ​​corresponding to body temperature are not the same. Although the continuous output of the resistance value can be realized by using the potentiometer, because the precisio...

AI Technical Summary

Problems solved by technology

High-precision resistors can simulate several specific temperature values, but cannot achieve continuous output of temperature values. However, there are various types of existing temperature monitoring probes, and the resistance values ​​corresponding to body temperature are not the same.

Although the continuous output of the resistance value can be realized by using the potentiometer, because the precision of the potentiometer itself is not high, and there is a large change with the temperature change, the simulated body temperature has a large error

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