A method, device, equipment and storage medium for improving temperature measurement stability

Abstract

The present invention discloses a method, device, equipment and storage medium for improving temperature measurement stability, which relates to the technical field of imaging temperature measurement. The method includes the following steps: Step S1: Obtain the average value f0 of the outputs of non-photosensitive pixel points on the detector; Step S2: Obtain the output f(t0) of the corresponding imaging pixel points of the target to be measured on the detector and the output f0(t0) of the corresponding non-photosensitive pixel points at time t0, and substitute f(t0) - (f0(t0) - f0) for f(t0) into the temperature measurement model for calculation to obtain the temperature of the target to be measured. By using the non-photosensitive pixel points on the detector, the noise caused by non-illumination factors in the output signal of the detector is filtered in real time, greatly improving the stability of the output temperature. At the same time, the smoothing delay caused by traditional software filtering is avoided, ensuring the real-time performance of the system while improving the output stability. At the same time, it can alleviate the problem of inaccurate temperature measurement of the equipment to a certain extent when the environment changes suddenly, and improve the startup stable time.

Description

Technical Field

[0001] The present invention relates to the technical field of imaging temperature measurement, and specifically provides a method, device, equipment and storage medium for improving temperature measurement stability. Background Art

[0002] In the field of object temperature measurement, imaging-based temperature measurement (such as infrared imaging temperature measurement) is widely used due to its non-contact measurement method, wide measurement range, high temperature measurement sensitivity and test speed. Existing devices convert the radiation energy received by the detector through the optical system of the thermometer into an electrical signal and calculate the surface temperature of the object to be measured through a temperature calibration formula. However, affected by the environment, electronic circuit interference, etc., the output temperature is unstable. The existing technology uses traditional hardware filtering and software smoothing methods to process the output fluctuations, which can neither completely filter out the fluctuations, nor avoid system delay, and cannot adapt to complex and changeable environments. Complex algorithms consume system resources and affect the real-time output of the system. Summary of the Invention

[0003] The purpose of the present invention is to solve the technical problems that imaging temperature measurement usually uses traditional hardware filtering and software smoothing methods to process output fluctuations, which can neither completely filter out the fluctuations, nor avoid system delay, and cannot adapt to complex and changeable environments. The present invention provides a method, device, equipment and storage medium for improving temperature measurement stability.

[0004] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0005] A method for improving temperature measurement stability, the method comprising the following steps:

[0006] Step S1: Obtain the average output value of the non-sensitive pixel points on the detector

[0007] Step S2: Obtain the output f(t0) of the corresponding imaging pixel points of the target to be measured on the detector and the output f0(t0) of the corresponding non-sensitive pixel points at time t0, and substitute to replace f(t0) and substitute it into the temperature measurement model for calculation to obtain the temperature of the target to be measured.

[0008] Further, obtain the average output value of the non-sensitive pixel points on the detector in the non-uniform correction state of the device

[0009] Further, the step 1 includes:

[0010] Step S11: Obtain n frames of f0 data of the output of the non-sensitive pixel points on the detector;

[0011] Step S12: Add the n frames of f0 data and divide by n to obtain

[0012] A device for improving temperature measurement stability, comprising:

[0013] An acquisition module, configured to acquire the average output of non - photosensitive pixel points on the detector

[0014] A calibration module, configured to acquire the output f(t0) of the imaging pixel points corresponding to the target to be measured on the detector and the output f0(t0) of the corresponding non - photosensitive pixel points at time t0, and substitute the substituted f(t0) into the temperature measurement model for calculation to obtain the temperature of the target to be measured.

[0015] A device for improving temperature measurement stability, comprising a memory, a processor, and a program for improving temperature measurement stability stored on the memory and executable on the processor. The program for improving temperature measurement stability is configured to implement the steps of the method for improving temperature measurement stability as described above.

[0016] A storage medium, on which a program for improving temperature measurement stability is stored. When the program for improving temperature measurement stability is executed by a processor, it implements the steps of the method for improving temperature measurement stability as described above.

[0017] The beneficial effects of the present invention are as follows:

[0018] The present invention acquires the average output of non - photosensitive pixel points on the detector Then, it acquires the output f(t0) of the imaging pixel points corresponding to the target to be measured on the detector and the output f0(t0) of the corresponding non - photosensitive pixel points at time t0, and substitute the substituted f(t0) into the temperature measurement model for calculation to obtain the temperature of the target to be measured; by using the non - photosensitive pixel points on the detector, the noise caused by non - illumination factors in the detector output signal is filtered in real time, greatly improving the stability of the output temperature. At the same time, it avoids the smoothing delay caused by traditional software filtering, ensures the real - time performance of the system while improving the output stability, and can, to a certain extent, alleviate the problem of inaccurate temperature measurement when the device is in a sudden environmental change and improve the start - up stable time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic flow chart of the method of the present invention;

[0020] Figure 2 is a schematic diagram of the device framework of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention described and illustrated herein can be arranged and designed in a variety of different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0023] Embodiment 1

[0024] As Figure 1 shown, this embodiment provides a method for improving the temperature measurement stability, and the method includes the following steps:

[0025] Step S1: Obtain the average output of the non-photosensitive pixel points on the detector

[0026] Step S2: Obtain the output f(t0) of the corresponding imaging pixel points of the target to be measured on the detector and the output f0(t0) of the corresponding non-photosensitive pixel points at time t0, and substitute to replace f(t0) and substitute it into the temperature measurement model for calculation to obtain the temperature of the target to be measured.

[0027] The principle of the present invention is as follows: The output f(t0) of any imaging pixel and the non-photosensitive pixel f0(t0) on the detector are both functions of time t0. The output of the imaging pixel is positively correlated with the radiation amount it receives, and is also affected by environmental temperature, electronic circuit interference, etc. When the radiation amount received by the detector remains unchanged and the detector itself is in a relatively stable state, the output of the detector should remain unchanged, but when it is affected by temperature, electronic circuit interference, etc., the output will change. Due to the consistency shown between the pixel points of the detector, when being interfered, the non-photosensitive pixel points will exhibit a change characteristic similar to that of the photosensitive pixel points, but the change in the output of the non-photosensitive pixel points has nothing to do with the temperature change of the detected target. Therefore, this technology can filter out the influence brought by non-light factors in the detector output signal in real time through the output change of the non-photosensitive pixel points, so as to ensure that the gray-scale data brought into the model for temperature calculation is only related to the radiation amount received by the pixel, and other interferences are stripped. Specifically, obtain the average output of the non-photosensitive pixel points on the detector in the state of non-uniform correction of the device Then obtain the output f(t0) of the corresponding imaging pixel points of the target to be measured on the detector and the output f0(t0) of the corresponding non-photosensitive pixel points at time t0, and substitute Instead of substituting f(t0) into the temperature measurement model for calculation to obtain the temperature of the target to be measured. Among them, the non-uniform correction of the device is in an unmeasurable temperature state, and most actual users perform this action before taking the temperature measurement reading. Therefore, the non-uniform correction is selected as the non-photosensitive point data acquisition state. In addition, as long as it involves a temperature measurement model constructed through the output of imaging pixel points on the detector, it is applicable. The temperature measurement model is a prior art and will not be elaborated here. By using the non-photosensitive pixel points on the detector, the noise caused by non-illumination factors in the detector output signal is filtered in real time, greatly improving the stability of the output temperature. At the same time, it avoids the smoothing delay caused by traditional software filtering, ensures the real-time performance of the system while improving the output stability, and can alleviate the problem of inaccurate temperature measurement of the device to a certain extent when the environment changes suddenly, and also improves the startup stable time.

[0028] Embodiment 2

[0029] This embodiment provides a method for improving the temperature measurement stability, and the method includes the following steps:

[0030] Step S1: Obtain the average value of the output of the non-photosensitive pixel points on the detector

[0031] The said step 1 includes:

[0032] Step S11: Obtain n frames of f0 data of the output of the non-photosensitive pixel points on the detector;

[0033] Step S12: Add the n frames of f0 data and divide by n to get

[0034] Step S2: Obtain the output f(t0) of the corresponding imaging pixel points of the target to be measured on the detector and the output f0(t0) of the corresponding non-photosensitive pixel points at time t0, and substitute Instead of substituting f(t0) into the temperature measurement model for calculation to obtain the temperature of the target to be measured.

[0035] Embodiment 3

[0036] As Figure 2 shown, this embodiment provides a device for improving the temperature measurement stability, including:

[0037] An acquisition module, configured to obtain the average value of the output of the non-photosensitive pixel points on the detector

[0038] A calibration module, configured to obtain the output f(t0) of the corresponding imaging pixel points of the target to be measured on the detector and the output f0(t0) of the corresponding non-photosensitive pixel points at time t0, and substitute Instead of substituting f(t0) into the temperature measurement model for calculation to obtain the temperature of the target to be measured.

[0039] In this embodiment, an acquisition module is used to acquire the average output value of the non-photosensitive pixel points on the detector. Preferably, the acquisition module acquires the average output value of the non-photosensitive pixel points on the detector in the non-uniform state of the device. Specifically, the acquisition module acquires n frames of f0 data output by the non-photosensitive pixel points on the detector; after adding the n frames of f0 data and dividing by n, the result is obtained. Then, a calibration module acquires the output f(t0) of the imaging pixel points corresponding to the target to be measured on the detector and the output f0(t0) of the corresponding non-photosensitive pixel points at time t0, and calls the average output value of the non-photosensitive pixel points. The fluctuating output of the imaging pixel points is removed. The is used to replace f(t0) and input it into the temperature measurement model for calculation to obtain the temperature of the target to be measured. By using the non-photosensitive pixel points on the detector, the noise caused by non-illumination factors in the detector output signal is filtered in real time, greatly improving the stability of the output temperature. At the same time, the smoothing delay caused by traditional software filtering is avoided, ensuring the real-time performance of the system while improving the output stability. At the same time, it can alleviate the problem of inaccurate temperature measurement of the device when the environment changes suddenly to a certain extent and improve the startup stable time.

[0040] Embodiment 4

[0041] This embodiment provides a device for improving temperature measurement stability, including a memory, a processor, and a program for improving temperature measurement stability stored on the memory and executable on the processor. The program for improving temperature measurement stability is configured to implement the steps of the method for improving temperature measurement stability as described above.

[0042] In this embodiment, the device may include: a processor, such as a central processing unit (CPU), a communication bus, a user interface, a network interface, and a memory. Among them, the communication bus is used to realize the connection and communication between these components. The user interface may include a display screen (Display) and an input unit such as a keyboard (Keyboard). The user interface may also include a standard wired interface and a wireless interface. The network interface may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (WI-FI) interface). The memory may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk memory. The memory may also be a storage device independent of the aforementioned processor.

[0043] As a storage medium, this embodiment further provides a storage medium with a program for improving temperature measurement stability stored thereon. When the program for improving temperature measurement stability is executed by a processor, it implements the steps of the method for improving temperature measurement stability as described above.

Claims

1. A method for improving temperature measurement stability, characterized in that, The method includes the following steps: Step S1: Obtain the average output of the non-photosensitive pixel points on the detector ; Step S2: Obtain the output f(t0) of the corresponding imaging pixel point of the target to be measured on the detector and the output f0(t0) of the corresponding non-photosensitive pixel point at time t0, and substitute f(t0) - (f0(t0) - ) for f(t0) into the temperature measurement model for calculation to obtain the temperature of the target to be measured; In step S1, in the non-uniform correction state of the detector, n frames of f0 data output by the non-photosensitive pixel points on the detector are acquired, and after adding the n frames of f0 data and dividing by n, the average value output by the non-photosensitive pixel points on the detector is obtained .

2. A device for improving temperature measurement stability, characterized in that, including: An acquisition module for acquiring the average output value of the non-photosensitive pixel points on the detector ; Calibration module, used to obtain the output f(t0) of the imaging pixel point corresponding to the target to be measured on the detector at time t0 and the output f0(t0) of the corresponding non-photosensitive pixel point, and substitute f(t0) - (f0(t0) - ) instead of f(t0) into the temperature measurement model for calculation to obtain the temperature of the target to be measured; In the acquisition module, in the non-uniformity correction state of the detector, n frames of f0 data output by the non-sensitive pixel points on the detector are acquired, and after adding the n frames of f0 data and dividing by n, the average value of the output of the non-sensitive pixel points on the detector is obtained .

3. A device for improving temperature measurement stability, characterized in that, including a memory, a processor, and a program for improving temperature measurement stability stored on the memory and executable on the processor, the program for improving temperature measurement stability being configured to implement the steps of the method for improving temperature measurement stability as claimed in claim 1.

4. A storage medium, characterized in that, A program for improving temperature measurement stability is stored on the storage medium, and when the program for improving temperature measurement stability is executed by a processor, the steps of the method for improving temperature measurement stability as claimed in claim 1 are implemented.

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