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Device for simulating thermistor type temperature sensor

A temperature sensor and thermistor technology, applied in the field of analog devices, can solve problems such as inconvenient to carry, low precision, easy to wear, etc., and achieve the effect of light weight, high precision, convenient and simple operation

Inactive Publication Date: 2013-06-26
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose a device for simulating a thermistor temperature sensor in view of the shortcomings of the current analog thermistor temperature sensor with low precision, easy to wear and not convenient to carry

Method used

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  • Device for simulating thermistor type temperature sensor
  • Device for simulating thermistor type temperature sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] Such as figure 1 Said, the device for simulating thermistor temperature sensor of this example includes power supply, single-chip microcomputer, keyboard, display unit and digital rheostat, and power supply is used for providing operating voltage to single-chip microcomputer, display unit, digital rheostat and keyboard. The single-chip microcomputer is the control core of the device, which is responsible for the conversion of the keyboard input temperature value, the display of the temperature value and the output of the resistance value of the digital rheostat. The keyboard can use a 16-key matrix keyboard or a 16-key ADC keyboard to input the set temperature value. The display unit is a liquid crystal display or a digital display tube, which displays temperature values ​​input by at least one or more channels.

[0019] Wherein, the output end of the temperature simulation device is the output end of the digital rheostat, which is connected with the input end of the t...

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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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/18
Inventor 卢兴旺
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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