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Temperature detecting method, device and equipment

The technology of a temperature detection device and detection method is applied in the directions of measuring devices, thermometers, electric devices, etc., which can solve problems such as Vcc fluctuations and achieve the effect of overcoming errors

Active Publication Date: 2017-05-10
OMRON SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] exist figure 1 In the temperature detection equipment, the accuracy of the voltage Vcc of the power supply is generally designed to be within 5%. Therefore, Vcc will fluctuate, and Vcc will also fluctuate due to the influence of surrounding interference. The fluctuation of Vcc caused by these two factors will affect the temperature. The results of the detection have a great influence

Method used

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  • Temperature detecting method, device and equipment
  • Temperature detecting method, device and equipment
  • Temperature detecting method, device and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 of the present application provides a temperature detection device for detecting the temperature of the environment where the thermistor is located.

[0036] Figure 4 is a schematic diagram of the temperature detection device of the present embodiment 1, such as Figure 4 As shown, the temperature detection device 400 may include: a calculation unit 401 and a determination unit 402 .

[0037] In this embodiment, the calculation unit 401 can be used to calculate the ratio P of the voltage Vcc of the power supply 502 connected to the thermistor 501 and the voltage Vout of the thermistor 501 away from the power supply end 5011; the determination unit 402 The temperature T of the environment where the thermistor is located can be determined according to the ratio P calculated by the calculation unit 401 and the corresponding relationship between the ratio P and the temperature T.

[0038] In the embodiment of the present application, the error of the voltage...

Embodiment 2

[0058] Embodiment 2 of the present application provides a temperature detection device, and the temperature detection device includes: the temperature detection device as described in Embodiment 1.

[0059] Figure 5 It is a schematic diagram of the composition of the temperature detection device in Example 2 of the present application. Such as Figure 5 As shown, the temperature detection device 500 may include: a thermistor 501 , a power supply 502 , and a central processing unit (CPU) 503 .

[0060] In one embodiment, the function of the temperature detection device can be integrated into the central processing unit 503 .

[0061] Wherein, the central processing unit 503 can be configured as:

[0062] calculating the ratio of the voltage of a power source connected to the thermistor to the voltage of a terminal of the thermistor remote from the power source; and

[0063] According to the ratio and the corresponding relationship between the ratio and the temperature, the...

Embodiment 3

[0074] Embodiment 3 of the present application provides a temperature detection method, corresponding to the temperature detection device 400 in Embodiment 1.

[0075] Figure 6 is a schematic diagram of the temperature detection method of this embodiment, such as Figure 6 As shown, the temperature detection method includes:

[0076] Step 601, calculating the ratio of the voltage of the power supply connected to the thermistor to the voltage at the end of the thermistor away from the power supply; and

[0077] Step 602: Determine the temperature of the environment where the thermistor is located according to the ratio and the corresponding relationship between the ratio and temperature.

[0078] Such as Figure 6 As shown, the method may also include:

[0079] Step 603 , sampling to acquire the voltage of the power supply and the voltage of the one end of the thermistor.

[0080] Such as Figure 6 As shown, the method may also include:

[0081] Step 604, respectively c...

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Abstract

An embodiment of the invention provides a temperature detecting method, device and equipment used for detecting the temperature of an environment where a thermistor is located. The temperature detecting device comprises a computing unit and a determining unit, wherein the computing unit is used for computing the ratio of the voltage of a power supply connected with the thermistor to the voltage of one end, away from the power supply, of the thermistor; the determining unit is used for determining the temperature of the environment where the thermistor is located according to the ratio and the corresponding relation between the ratio and the temperature. By the temperature detecting method, device and equipment, temperature detecting accuracy can be increased.

Description

technical field [0001] The present application relates to the technical field of electronic circuits, in particular to a temperature detection method, a temperature detection device and a temperature detection device. Background technique [0002] A thermistor is a component whose resistance value changes with temperature. Thermistors are divided into positive temperature coefficient thermistors (PTC) and negative temperature coefficient thermistors (NTC). A thermistor's resistance decreases as the temperature increases. [0003] In the prior art, the temperature detection device can perform temperature detection based on the above characteristics of the thermistor. figure 1 is a schematic diagram of a temperature detection device in the prior art, such as figure 1 As shown, the temperature detection device 100 may include a thermistor 101 and a resistor R1 connected in series, a controller 102, and a power supply, wherein the power supply may be connected to the thermist...

Claims

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Application Information

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IPC IPC(8): G01K7/22
Inventor 蒋剑俊
Owner OMRON SHANGHAI
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