Device for simulating thermistor type temperature sensor

Abstract

The invention relates to a simulating device, particularly to a device for simulating a thermistor type temperature sensor. The device for simulating the thermistor type temperature sensor comprises a power supply, a processing module, an input module, a display module and a digital rheostat, wherein the power supply is respectively connected with the processing module, the input module and the display module; the processing module is respectively connected with the input module, the display module and the digital rheostat; the input module is used for inputting a temperature value; and the processing module controls the display module according to the received temperature value to display the temperature value and processes the temperature value to obtain a resistance value code corresponding to the temperature value, and the digital rheostat is controlled through the code to output the resistance value. The device has the characteristics of high precision, long service life, convenience and simplicity in operation and also has the advantages of small size, light weight, convenience in carrying, and good expandability. The device is especially suitable for simulating the thermistor type temperature sensor.

Description

technical field

[0001] The invention relates to a simulation device, in particular to a device for simulating a thermistor type temperature sensor. Background technique

[0002] The resistance value of the thermistor temperature sensor changes as the temperature changes. Each resistance value has a uniquely determined corresponding temperature value. The current temperature value can be determined by detecting the resistance value at both ends of the temperature sensor, because the thermistor temperature sensor Due to this characteristic, it is widely used in equipment with frequent temperature changes such as refrigerators. In the actual design and development process, it is necessary to simulate the thermistor-type temperature sensor for testing. At present, fixed resistors or mechanical resistance boxes are often used to simulate thermistor-type temperature sensors. However, these two simulation methods have the following disadvantages: using fixed resistance simulation,...

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