Method, device and equipment for acquiring temperature of NTC (Negative Temperature Coefficient) resistor as well as readable storage medium
A resistance temperature, storage medium technology, applied in the direction of using electrical devices, thermometers, thermometers with electrical/magnetic components directly sensitive to heat, etc., can solve the problems of poor accuracy, high cost, discontinuous data, etc. Cost, effect of increased speed and accuracy
Inactive Publication Date: 2018-06-29
QINGDAO HAIER TECH
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However, the cost of using the first method is relatively high, and because the temperature calculation formula of the NTC resistor contains logarithmic calculations and a large number of floating-point number divisions, it will take up more resources of the single-chip computer when calculating the resistance value of the NTC resistor. Low; the accuracy of the second method is poor, because the data in the resistance value-temperature look-up table is not continuous, the high-precision requirements cannot be achieved
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[0041] In order to further explain the technical means and functions adopted by the present invention to achieve the intended purpose, the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0042] The first embodiment of the present invention proposes a method for obtaining the NTC resistance temperature, such as figure 1 As shown, the method specifically includes the following steps:
[0043] Step S101: Obtain the voltage value V of the NTC resistor to be detected R .
[0044] Specifically, the acquisition of the voltage value V of the negative temperature coefficient NTC resistance to be detected R ,include:
[0045] Step A1: Obtain the modulus AD value of the NTC resistance to be detected through a single-chip microcomputer with n-bit AD;
[0046] Preferably, the AD value of the NTC resistance to be detected is obtained through an 8-bit single-chip microcomputer with a 10-bit AD.
[0047] Step ...
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Abstract
The invention discloses a method, a device and equipment for acquiring the temperature of an NTC (Negative Temperature Coefficient) resistor as well as a readable storage medium. The method comprisesthe following steps: acquiring a voltage value VR of a to-be-detected NTC resistor; calculating a resistance value RT of the to-be-detected NTC resistor according to the voltage value VR; calculatinga temperature value T of the to-be-detected NTC by using a resistance-temperature curve formula according to the resistance value RT. According to the invention, a fitting curve for calculating the temperature of the NTC resistor replaces a formula method and a look-up table method in the prior art, so that the speed and the precision for acquiring the temperature of the NTC resistor can be greatly improved, and the cost of a product can be reduced.
Description
technical field [0001] The invention relates to the technical field of thermistors, in particular to a method, device, equipment and readable storage medium for obtaining the temperature of an NTC resistance. Background technique [0002] There are two ways to obtain the temperature of NTC (Negative Temperature Coefficient, negative temperature coefficient) resistance in the prior art; The AD value is used to calculate the resistance value of the NTC resistor, and then according to the resistance value of the NTC resistor, the temperature calculation formula of the NTC resistor is used to realize the calculation of the temperature value of the NTC resistor with high precision. The second method: Obtain the modulus AD value of the NTC resistor through a single-chip microcomputer with a low main frequency, and calculate the resistance value of the NTC resistor according to the obtained AD value, and then according to the resistance value of the NTC resistor according to the re...
Claims
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IPC IPC(8): G01K7/16
CPCG01K7/16
Inventor 王小乾郭巍
Owner QINGDAO HAIER TECH