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A temperature measuring method, device and products using the temperature measuring device

A temperature measuring device and temperature-sensitive technology, applied in the field of non-contact temperature measurement, can solve the problems of difficult measurement, slowness, large error, etc., and achieve the effect of simple and practical structure, suitable for popularization and application

Active Publication Date: 2019-04-05
广东云筹科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the temperature change process of the object is very slow, the change of the magnetic permeability of the ferromagnet (that is, the change of the magnetic induction intensity of the magnetic temperature sensing element) caused by the temperature change is also very slow. This slowly changing magnetic induction intensity reflects The current or voltage change is extremely weak, so it is very difficult to measure, and the error is very large
Therefore, this solution is also not suitable for daily life applications.

Method used

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  • A temperature measuring method, device and products using the temperature measuring device
  • A temperature measuring method, device and products using the temperature measuring device
  • A temperature measuring method, device and products using the temperature measuring device

Examples

Experimental program
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Embodiment 1

[0060] This embodiment discloses a temperature measurement method, which uses the resonance principle and the combination of the magnetic permeability and temperature change characteristics of the temperature-sensitive magnet to realize non-contact temperature measurement.

[0061]Specifically, an LC loop is set, the LC loop includes an inductor and a capacitor connected to the inductor, the iron core of the inductor is a temperature-sensitive magnetic core, the temperature-sensitive magnetic core is in contact with the measured object, and senses the temperature of the measured object ( Of course, in practical applications, it is not necessarily necessary for the temperature-sensitive magnetic core to be in contact with the measured object to sense the temperature of the measured object. This embodiment only provides a specific implementation mode. More accurate technical means for sensing the temperature of the measured object are within the protection scope of the present in...

Embodiment 2

[0070] This embodiment is an optimization to embodiment 1, see figure 2 ,Specifically:

[0071] a1. Set the frequency sweep range.

[0072] a2. Sweep within the set frequency sweep range, and send an electromagnetic wave signal of equal amplitude with continuously changing frequency to the LC loop.

[0073] In this embodiment, according to the characteristics of the LC circuit and the possible temperature range of the measured object, the frequency sweep range can be reasonably set in priority, and the frequency sweep work is continuously carried out within this range, which can improve the detection of resonance in the LC circuit. efficiency and accuracy.

Embodiment 3

[0075] This embodiment is an optimization scheme for Embodiment 1. Specifically, this embodiment proposes a method for detecting whether the LC circuit resonates, such as image 3 As shown, step B includes the following steps:

[0076] b11. Record the electromagnetic radiation signal strength around the LC loop;

[0077] b12. If the intensity of the electromagnetic radiation signal around the LC loop reaches the extreme value, it is judged that the LC loop is in resonance.

[0078] The extremum in this embodiment is defined as the maximum or minimum value that the intensity of the electromagnetic radiation signal can reach within the frequency sweep range.

[0079] In practical applications, since the LC loop is affected by continuously changing electromagnetic waves of equal amplitude, the LC loop will generate certain electromagnetic radiation signals. If the LC circuit is in a normal state, the electromagnetic radiation signal is very weak (that is, the intensity is very ...

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Abstract

The invention provides a temperature measuring method and device and a product using the temperature measuring device. The method comprises the steps that A a sweep frequency module sends an equal amplitude electromagnetic wave signal with continuous frequency change to an LC circuit, and the inductor iron core of the LC circuit is a temperature sensitive magnetic core which senses the temperature of a measured object; B whether the LC circuit resonates is detected; C the real-time working parameters of the sweep frequency module are recorded when the LC circuit resonates; and D the real-time working parameters of the sweep frequency module are used to calculate or query the temperature of the measured object. According to the invention, the resonant principle and the variation characteristic of the magnetic permeability and the temperature of the temperature sensitive magnet are ingeniously combined to realize non-contact temperature measurement; and the temperature measuring method and device and the product have the advantage of simple and practical structure, can quickly and accurately measure the temperature of the measured object, and are suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of non-contact temperature measurement, in particular to a temperature measurement method, device and products using the temperature measurement device. Background technique [0002] Traditional non-contact temperature measurement generally uses radiation thermometers, which measure the temperature of the measured object through infrared radiation. This kind of temperature measuring device has high cost and complex structure, and is generally only used in industrial production, and does not meet daily application. [0003] The invention patent with the patent number of 2010101367842 discloses a non-contact temperature measurement method, which discloses the use of the magnetic permeability temperature characteristics of ferromagnets to realize non-contact temperature measurement. The principle is: using the temperature characteristics of the magnetic permeability of the ferromagnet, when the magnetic induct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/38
CPCG01K7/38
Inventor 王娅
Owner 广东云筹科技有限公司