A temperature detection system, a temperature detection method, an electronic device and a storage medium

Abstract

The present application provides a temperature detection system, a temperature detection method, an electronic device and a storage medium, the method comprising: controlling a first light source and a second light source to irradiate a target object to be measured with a light wave of a first wavelength and a light wave of a second wavelength alternately in the same preset irradiation time period and at a preset frequency in each temperature measurement period within a preset temperature measurement time period; receiving a first electrical signal and a second electrical signal for each temperature measurement period within the preset temperature measurement time period; determining the temperature of the target object to be measured in the temperature measurement period based on a predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal; determining the temperature of the target object to be measured based on the temperature of the target object to be measured in each temperature measurement period within the preset temperature measurement time period. Through the method and system, the radiation temperature of the target product can be measured more accurately even if the transmittance of the transmission medium is not high enough, the target emissivity and the ambient temperature are not known.

Description

Technical Field

[0001] The present application relates to the field of temperature detection technology, and in particular to a temperature detection system, a temperature detection method, an electronic device and a storage medium. Background Art

[0002] The research on temperature detection of industrial products has always been one of the important topics in the field of industrial temperature detection. In the field of industrial temperature detection, it is generally necessary to perform temperature detection on the industrial products to be detected so that subsequent industrial production can proceed smoothly.

[0003] At present, the mainstream temperature detection method is generally a non-contact temperature detection method. Most non-contact temperature detection methods are passive temperature measurement methods. Generally, an infrared temperature detector is used to measure the temperature of the target product to be measured. The principle is based on the classic Planck's law of thermodynamics. However, this passive temperature measurement method requires that the transmittance of the transmission medium is high enough and the emissivity and ambient temperature of the target product are predicted. Finally, the radiation temperature of the target product can be measured more accurately. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a temperature detection system, a temperature detection method, an electronic device and a storage medium, which can accurately measure the radiation temperature of the target product even when the transmittance of the transmission medium is not high enough and the target emissivity and ambient temperature are not known.

[0005] In a first aspect, an embodiment of the present application provides a temperature detection system, the temperature detection system comprising:

[0006] A first light source and a second light source, wherein the first light source is used to generate a light wave of a first wavelength, and the second light source is used to generate a light wave of a second wavelength, and the first light source and the second light source are used to irradiate the target object to be measured with the light wave of the first wavelength and the light wave of the second wavelength alternately at the same preset irradiation time period and at a preset frequency in each temperature measurement period within a preset temperature measurement time period, so that the target object to be measured generates thermal radiation electromagnetic waves of any wavelength within a preset band; wherein the first wavelength and the second wavelength are within the preset band; and the duration of each temperature measurement period is equal to twice the duration of the preset irradiation time period;

[0007] A light wave filtering device, used for receiving the light wave of the first wavelength and the light wave of the second wavelength reflected by the target object to be tested and the thermal radiation electromagnetic wave of any wavelength within the preset wavelength band, and screening out the thermal radiation electromagnetic wave of the third wavelength from the light wave of the first wavelength and the thermal radiation electromagnetic wave of the preset wavelength band, and screening out the thermal radiation electromagnetic wave of the fourth wavelength from the light wave of the second wavelength and the thermal radiation electromagnetic wave of the preset wavelength band; wherein the third wavelength is not equal to the first wavelength, and the fourth wavelength is not equal to the second wavelength;

[0008] a radiation detector, configured to receive the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength transmitted from the optical wave filtering device, and convert the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength into corresponding first electrical signals and second electrical signals respectively;

[0009] A temperature detection device is used to receive the first electrical signal and the second electrical signal, and determine the temperature of the target object to be detected based on the first electrical signal and the second electrical signal.

[0010] Optionally, the light wave filtering device comprises a condenser lens and a filter wheel, and the filter wheel is provided with a first filter and a second filter;

[0011] The condenser lens is used to receive the light wave of the first wavelength reflected by the target object to be tested, the light wave of the second wavelength reflected by the target object to be tested, and the thermal radiation electromagnetic wave of the preset wavelength band, and send the light wave of the first wavelength, the light wave of the second wavelength, and the thermal radiation electromagnetic wave of any wavelength band within the preset wavelength band to the filter wheel; wherein the first light source and the second light source are at the same distance from the center of the condenser lens;

[0012] The filter wheel is used to filter out the thermal radiation electromagnetic wave of a third wavelength from the light wave of the first wavelength and the thermal radiation electromagnetic wave of any wavelength within the preset wavelength band through the first filter when receiving the light wave of the first wavelength and the thermal radiation electromagnetic wave of a preset wavelength band.

[0013] When receiving the light wave of the second wavelength and the thermal radiation electromagnetic wave of the preset wavelength band, the thermal radiation electromagnetic wave of the fourth wavelength is filtered out from the light wave of the second wavelength and the thermal radiation electromagnetic wave of any wavelength band within the preset wavelength band by the second filter.

[0014] Optionally, the temperature detection device comprises:

[0015] A control module, used to control the first light source and the second light source to irradiate the target object to be measured with light waves of the first wavelength and light waves of the second wavelength alternately at the same preset irradiation time period and at a preset frequency in each temperature measurement period within a preset temperature measurement time period, so that the target object to be measured generates thermal radiation electromagnetic waves of any wavelength within a preset wavelength band;

[0016] A receiving module, used for receiving a first electrical signal and a second electrical signal for each temperature measurement period within a preset temperature measurement time period;

[0017] A sub-calculation module, used to determine the temperature of the target object to be measured in the temperature measurement period based on a predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal;

[0018] The calculation module is used to determine the temperature of the target object to be measured based on the temperature of the target object to be measured in each temperature measurement cycle within the preset temperature measurement time period.

[0019] Optionally, the sub-computing module is specifically used for:

[0020] Based on the predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal, the temperature of the target object to be measured in the temperature measurement cycle is determined using the following formula:

[0021]

[0022] Among them, C 2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 ) is the first electrical signal; S(λ 2 ) is the second electrical signal; K is a predetermined calibration standard coefficient.

[0023] In a second aspect, an embodiment of the present application provides a temperature detection method, which is applied to the above-mentioned temperature detection device. The temperature detection method includes:

[0024] Control the first light source and the second light source to irradiate the target object to be measured with light waves of the first wavelength and light waves of the second wavelength alternately at the same preset irradiation time period and at a preset frequency in each temperature measurement cycle within a preset temperature measurement time period, so that the target object to be measured generates thermal radiation electromagnetic waves of any wavelength within a preset band; wherein the first wavelength and the second wavelength are within the preset band; and the duration of each temperature measurement cycle is equal to twice the duration of the preset irradiation time period;

[0025] For each temperature measurement cycle within a preset temperature measurement time period, a first electrical signal and a second electrical signal are received; the first electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a third wavelength, and the second electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a fourth wavelength; the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength are respectively obtained by filtering a light wave of the first wavelength, a light wave of the second wavelength, and a thermal radiation electromagnetic wave of any wavelength within a preset wavelength band generated by the first light source and the second light source irradiating the target object to be measured;

[0026] Determine the temperature of the target object to be measured in the temperature measurement period based on a predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal;

[0027] The temperature of the target object to be measured is determined based on the temperature of the target object to be measured in each temperature measurement cycle within the preset temperature measurement time period.

[0028] Optionally, based on a predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal, the temperature of the target object to be measured in the temperature measurement period is determined using the following formula:

[0029]

[0030] Among them, C 2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 ) is the first electrical signal; S(λ 2 ) is the second electrical signal; K is a predetermined calibration standard coefficient; T is the temperature of the target object to be measured in the temperature measurement cycle.

[0031] Optionally, determining the temperature of the target object to be measured based on the temperature of the target object to be measured in each temperature measurement cycle within the preset temperature measurement time period includes:

[0032] The average value of the temperature of the target object to be measured in each temperature measurement cycle within a preset temperature measurement time period is determined as the temperature of the target object to be measured, or,

[0033] The truncated mean value of the temperature of the target object to be measured in each temperature measurement period within the preset temperature measurement time period is determined as the temperature of the target object to be measured.

[0034] Optionally, the step of determining the calibration standard coefficient includes:

[0035] Controlling the first light source and the second light source to irradiate the target calibration object with the light wave of the first wavelength and the light wave of the second wavelength alternately for the same preset irradiation time period in each temperature measurement cycle within the preset temperature measurement time period, so that the target calibration object generates thermal radiation electromagnetic waves of any wavelength within the preset wavelength band;

[0036] For each temperature measurement cycle within a preset temperature measurement time period, a third electrical signal and a fourth electrical signal are received; the third electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a third wavelength, and the fourth electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a fourth wavelength; the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength are respectively obtained by filtering the light wave of the first wavelength, the light wave of the second wavelength, and the thermal radiation electromagnetic wave of a preset wavelength band generated by the first light source and the second light source irradiating the target calibration object;

[0037] Based on the third electrical signal, the fourth electrical signal, the third wavelength, the fourth wavelength, and the temperature of the preset target calibration object, the standard coefficient in the temperature measurement cycle is determined using the following formula:

[0038]

[0039] Among them, C 2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 )′ is the third electrical signal; S(λ 2 )' is the fourth electrical signal; t is the preset temperature of the target calibration object; K' is the standard coefficient of the temperature measurement cycle;

[0040] The average value of the standard coefficient of each temperature measurement cycle within the preset temperature measurement time period is determined as the calibration standard coefficient.

[0041] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor communicates with the memory through the bus, and the processor executes the machine-readable instructions to perform the steps of the temperature detection method described in any one of the second aspects.

[0042] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of any temperature detection method described in the second aspect are executed.

[0043] The temperature detection system, temperature detection method, electronic device and storage medium provided in the embodiments of the present application actively illuminate the surface of the target object to be measured at a preset frequency by alternatingly irradiating the first light source and the second light source, and then collect thermal radiation electromagnetic waves representing the disturbance temperature rise of the target object to be measured. The thermal radiation electromagnetic waves representing the disturbance temperature rise can be distinguished from the thermal radiation electromagnetic waves representing the ambient temperature emitted by the increase in ambient temperature, so the influence of the ambient temperature on the temperature measurement result can be ignored. In addition, by actively disturbing the target object to be measured with the first light source and the second light source of two wavelengths, the transmittance term and the emissivity term can be eliminated in the subsequent calculation, so that the obtained temperature detection result can avoid being affected by the transmittance and the emissivity.

[0044] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 A schematic diagram of the structure of a temperature detection system provided by an exemplary embodiment of the present application is shown;

[0047] Figure 2 A flow chart of a temperature detection method provided by an exemplary embodiment of the present application is shown;

[0048] Figure 3 An exemplary embodiment of the present application provides a Figure 1 A schematic diagram of the structure of a temperature detection device in a temperature detection system;

[0049] Figure 4 A schematic structural diagram of an electronic device provided by an exemplary embodiment of the present application is shown. DETAILED DESCRIPTION

[0050] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work belongs to the scope of protection of the present application.

[0051] Prior to the present application, the existing non-contact temperature detection method was generally a passive temperature measurement method, which generally uses an infrared temperature detector to measure the temperature of the target product to be measured. The temperature measurement principle of the infrared temperature detector is based on the fact that any object above absolute zero will radiate energy in the form of electromagnetic waves of a certain wavelength. The higher the temperature, the greater the total energy radiated. The infrared temperature detector uses the radiation energy of the object to measure temperature based on the classic Planck's law of thermodynamics.

[0052] However, this passive temperature measurement method requires that the transmittance of the transmission medium is high enough, and the emissivity and ambient temperature of the target product are known in advance, so that the temperature of the target product can be measured more accurately. Specifically, the existing passive temperature measurement methods have the following three main problems:

[0053] (1) The radiation received by passive radiation temperature measurement is composed of the radiation of the target product itself and the radiation of the environment. When the temperature of the target product is much higher than the ambient temperature, the influence of the ambient temperature can be ignored. However, when the temperature of the target product is close to the ambient temperature or the ambient temperature is unpredictable, the influence of the environment cannot be ignored.

[0054] (2) Since passive radiation temperature measurement is non-contact temperature measurement, the thermal radiation of the target product itself is transmitted to the radiation detector (such as an infrared temperature detector) through a medium such as air. In different environments (such as smoke environment and dust environment, etc.), the medium's absorption capacity (i.e., absorption rate) of thermal radiation is different, which leads to deviations in the thermal radiation received by the radiation detector, making it impossible to accurately measure the temperature of the target product; in addition, the classical thermal radiation theory confirms that objects with the same temperature emit different thermal radiation due to different surface emissivities. Therefore, when the emissivity of the target product is uncertain, it is impossible to accurately measure the temperature of the target product.

[0055] Based on the above problems existing in the prior art, the embodiments of the present application provide a temperature detection system, a detection method, an electronic device and a storage medium, which can accurately measure the temperature of a target product.

[0056] To facilitate understanding of the embodiments of the present application, a temperature detection system disclosed in the embodiments of the present application is first introduced in detail.

[0057] See also Figure 1 , Figure 1 A schematic structural diagram of a temperature detection system 100 provided in an exemplary embodiment of the present application.

[0058] like Figure 1 As shown, the temperature detection system 100 includes:

[0059] A first light source 10 and a second light source 20, wherein the first light source 10 is used to generate a light wave of a first wavelength, and the second light source 20 is used to generate a light wave of a second wavelength, and the first light source 10 and the second light source 20 are used to irradiate the target object to be tested with the light wave of the first wavelength and the light wave of the second wavelength alternately in the same preset irradiation time period and at a preset frequency in each temperature measurement cycle within a preset temperature measurement time period, so that the target object to be tested generates thermal radiation electromagnetic waves of any wavelength within a preset band. Wherein, the first wavelength and the second wavelength are within the preset band; the duration of each temperature measurement cycle is equal to twice the duration of the preset irradiation time period.

[0060] As an example, the first light source 10 and the second light source 20 may be lasers, the first wavelength may be 5 μm, and the second wavelength may be 7 μm.

[0061] Here, the preset temperature measurement time period is a time period for measuring the temperature of the target object to be measured, for example, the preset temperature measurement time period can be 10s. The temperature measurement cycle is a time period for measuring a temperature of the target object to be measured, for example, the temperature measurement cycle can be 2s. The preset irradiation time period is a time period in which the first light source 10 irradiates the target object to be measured once, or a time period in which the second light source 20 irradiates the target object to be measured once, for example, the preset irradiation time period can be 1s, therefore, it can be understood that the duration of each temperature measurement cycle is equal to twice the duration of the preset irradiation time period.

[0062] Here, the first light source 10 irradiates the target object to be tested at a preset frequency in a preset irradiation time period, and the second light wave also irradiates the target object to be tested at a preset frequency in a preset irradiation time period. Here, the preset frequency can be 25 Hz. As an example, the duty cycle of the first light source 10 irradiating the target object to be tested at a preset frequency and the duty cycle of the second light source 20 irradiating the target object to be tested at a preset frequency can be, for example, both 50%. It can be understood that here the first light source 10 and the second light source 20 actually irradiate the target object to be tested with an AC signal. In this way, the thermal radiation electromagnetic wave indicating the disturbance temperature rise detected subsequently can be distinguished from the thermal radiation electromagnetic wave indicating the ambient temperature emitted by the increase in ambient temperature, so that the radiation temperature of the target product can be measured more accurately even when the ambient temperature is unknown.

[0063] As an example, the temperature detection system 100 may further include a lock-in amplifier 60, the input end of the lock-in amplifier 60 is connected to the radiation detector 40, and the output end of the lock-in amplifier 60 is connected to the temperature detection device 50. The function of the lock-in amplifier will be described later.

[0064] Next, the principle of generating thermal radiation electromagnetic waves of preset bands for the target object to be tested will be explained. According to the principles of thermodynamics, all objects above absolute zero will emit heat in the form of electromagnetic waves, which is called thermal radiation. Therefore, after the first light source 10 and the second light source 20 irradiate the target object to be tested, the target object to be tested will generate more heat, and this heat will radiate in all directions in the form of electromagnetic waves, that is, the thermal radiation electromagnetic waves described in this application. Moreover, the band of this thermal radiation electromagnetic wave is a wide-band electromagnetic wave, which includes the wavelength of the first light source 10 and the wavelength of the second light source 20. For example, the wide band can be 1μm-10μm.

[0065] When the first light source 10 irradiates the target object to be tested, the target object to be tested can generate thermal radiation electromagnetic waves of any wavelength in the 1μm-10μm band, such as 2μm, 4μm, and 5μm; when the second light source 20 irradiates the target object to be tested, the target object to be tested can also generate thermal radiation electromagnetic waves of any wavelength in the 1μm-10μm band, such as 4μm, 5μm, and 7μm.

[0066] The light wave filtering device 30 is used to receive the light wave of the first wavelength and the light wave of the second wavelength reflected by the target object to be tested, and the thermal radiation electromagnetic wave of any wavelength within the preset wavelength band, and to filter out the thermal radiation electromagnetic wave of the third wavelength from the light wave of the first wavelength and the thermal radiation electromagnetic wave of the preset wavelength band, and to filter out the thermal radiation electromagnetic wave of the fourth wavelength from the light wave of the second wavelength and the thermal radiation electromagnetic wave of the preset wavelength band;

[0067] As an example, the light wave filtering device 30 includes a focusing lens 32 and a filter wheel 31 , and the filter wheel 31 is provided with a first filter 311 and a second filter 312 ;

[0068] The condenser lens 32 is used to receive the light wave of the first wavelength reflected by the target object to be tested, the light wave of the second wavelength reflected by the target object to be tested, and the thermal radiation electromagnetic wave of the preset wavelength band, and send the light wave of the first wavelength, the light wave of the second wavelength, and the thermal radiation electromagnetic wave of any wavelength in the preset wavelength band to the filter wheel 31; wherein the first light source 10 and the second light source 20 are at the same distance from the center of the condenser lens 32;

[0069] The filter wheel 31 is used for filtering out the thermal radiation electromagnetic wave of a third wavelength from the light wave of the first wavelength and the thermal radiation electromagnetic wave of the preset wavelength band through the first filter 311 when receiving the light wave of the first wavelength and the thermal radiation electromagnetic wave of any wavelength within the preset wavelength band.

[0070] When receiving the light wave of the second wavelength and the thermal radiation electromagnetic wave of the preset band, the thermal radiation electromagnetic wave of the fourth wavelength is filtered out from the light wave of the second wavelength and the thermal radiation electromagnetic wave of the preset band by the second filter 312; wherein the third wavelength is not equal to the first wavelength, and the fourth wavelength is not equal to the second wavelength.

[0071] Here, after the target object to be tested is irradiated by the first light source 10, the target object to be tested will also reflect the light wave of the first wavelength emitted by the first light source 10, and after the target object to be tested is irradiated by the second light source 20, the target object to be tested will also reflect the light wave of the second wavelength emitted by the second light source 20. Therefore, in one example, after the first light source 10 irradiates the target object to be tested, the focusing lens 32 receives the light wave of the first wavelength, such as 5 μm, and the thermal radiation electromagnetic wave of any wavelength within the preset wavelength band, such as 2 μm, 4 μm, and 5 μm.

[0072] Here, since the thermal radiation electromagnetic wave of any wavelength may contain the first wavelength of the light wave of the first wavelength reflected by the target object to be tested, such as 5μm, in order to prevent the light wave of the first wavelength from entering the temperature detection device 50 and affecting the final detection result, in the exemplary embodiment of the present application, the first filter 311 on the filter wheel 31 is set to only allow the thermal radiation electromagnetic wave of the third wavelength to pass through, where the third wavelength is not equal to the first wavelength, for example, when the first wavelength is 5μm, the third wavelength is 8μm. Preferably, the third wavelength is equal to the second wavelength, for example, when the first wavelength is 5μm and the second wavelength is 7μm, the third wavelength is equal to 7μm.

[0073] Here, since the principle of the target object to be tested being irradiated by the second light source 20 is the same as the principle of being irradiated by the first light source 10, the principle of the target object to be tested being irradiated by the second light source 20 can refer to the principle of being irradiated by the first light source 10, and no further description is given here. Here, the fourth wavelength is not equal to the second wavelength. Preferably, the fourth wavelength is equal to the first wavelength. For example, when the first wavelength is 5 μm and the second wavelength is 7 μm, the fourth wavelength is equal to 5 μm.

[0074] In addition, as an example, the filter wheel 31 can be controlled by the temperature detection device 50 so that when the first light source 10 irradiates the target object to be measured, the first filter 311 in the filter wheel 31 is rotated to the axis of the focusing lens 32, and when the second light source 20 irradiates the target object to be measured, the second filter 312 in the filter wheel 31 is rotated to the axis of the focusing lens 32.

[0075] The radiation detector 40 is used to receive the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength sent from the optical wave filtering device 30, and convert the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength into corresponding first electrical signals and second electrical signals respectively.

[0076] Here, the thermal radiation electromagnetic wave of the third wavelength corresponds to a value of a first electrical signal, and the thermal radiation electromagnetic wave of the fourth wavelength corresponds to a value of a second electrical signal. As an example, the value of the first electrical signal and the value of the second electrical signal may be current values.

[0077] In addition, as an example, when the temperature detection system 100 may further include a phase-locked amplifier 60 (not shown in the figure), one end of the phase-locked amplifier 60 is connected to the radiation detector 40, and the other end of the phase-locked amplifier 60 is connected to the temperature detection device 50. The phase-locked amplifier 60 is used to filter out the DC component in the first electrical signal when receiving the first electrical signal, obtain the AC component, then amplify the AC component, and send the first electrical signal corresponding to the amplified AC component to the temperature detection device 50; when receiving the second electrical signal, filter out the DC component in the second electrical signal, obtain the AC component, amplify the AC component, and send the second electrical signal corresponding to the amplified AC component to the temperature detection device 50.

[0078] The temperature detection device 50 is used to receive the first electrical signal and the second electrical signal, and determine the temperature of the target object to be detected based on the first electrical signal and the second electrical signal.

[0079] Here, the temperature detection device may be a personal computer, a host computer, an industrial computer, etc. The temperature detection device is used to execute the temperature detection method in the exemplary embodiment of the present application.

[0080] A temperature detection method provided by an exemplary embodiment of the present application will be described in detail below.

[0081] See also Figure 2 , Figure 2 The following is a flow chart of a temperature detection method provided by an exemplary embodiment of the present application. Figure 1 As shown in , a temperature detection method provided by an exemplary embodiment of the present application includes the following steps:

[0082] S101, controlling the first light source and the second light source to irradiate the target object to be measured with light waves of the first wavelength and light waves of the second wavelength alternately with the same preset irradiation time period in each temperature measurement cycle within a preset temperature measurement time period, so that the target object to be measured generates thermal radiation electromagnetic waves of any wavelength within a preset band; wherein the first wavelength and the second wavelength are within the preset band; and the duration of each temperature measurement cycle is equal to twice the duration of the preset irradiation time period.

[0083] S102. For each temperature measurement cycle within a preset temperature measurement time period, a first electrical signal and a second electrical signal are received; the first electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a third wavelength, and the second electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a fourth wavelength; the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength are respectively obtained by filtering a first wavelength light wave, a second wavelength light wave and a thermal radiation electromagnetic wave of any wavelength within a preset wavelength band generated by irradiating the target object with the first light source and the second light source.

[0084] Here, regarding step S101 and step S102, since these have been introduced in detail in the above-mentioned temperature detection device, they will not be described again here.

[0085] S103. Determine the temperature of the target object to be measured in the temperature measurement cycle based on a predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal, and the second electrical signal.

[0086] Here, the predetermined calibration standard coefficient represents the temperature detection performance of the temperature detection system.

[0087] As an example, the calibration standard coefficient can be determined by the following steps (a), (b), (c) and (d):

[0088] (a) controlling the first light source and the second light source to irradiate the target calibration object with the light wave of the first wavelength and the light wave of the second wavelength alternately for the same preset irradiation time period in each temperature measurement cycle within a preset temperature measurement time period, so that the target calibration object generates thermal radiation electromagnetic waves of any wavelength within a preset wavelength band.

[0089] Here, the target calibration object may be a high-temperature black body or gray body with high emissivity. For example, the target calibration object may be graphite, iron oxide, an object with a black paint sprayed on the surface, and the like.

[0090] Here, the temperature of the target calibration object is known. Preferably, the temperature of the target calibration object is greater than 500°C.

[0091] Here, the principle of the target calibration object being irradiated by the first light source and the second light source is the same as the principle of the target object to be measured being irradiated by the first light source and the second light source, so it is not repeated here.

[0092] (b) For each temperature measurement cycle within a preset temperature measurement time period, a third electrical signal and a fourth electrical signal are received; the third electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a third wavelength, and the fourth electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a fourth wavelength; the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength are respectively obtained by filtering the first wavelength light wave, the second wavelength light wave and the thermal radiation electromagnetic wave of a preset band generated by the first light source and the second light source irradiating the target calibration object.

[0093] Here, it can be known from the laws of thermodynamics that the process of converting thermal radiation electromagnetic waves into electrical signals by the radiation detector is also related to the temperature and emissivity of the target calibration object. Since the temperature of the target calibration object and the temperature of the target object to be measured may not be the same, and the emissivity may not be the same, the value of the third electrical signal obtained based on the thermal radiation electromagnetic wave of the third wavelength may not be the same as the value of the first electrical signal obtained based on the thermal radiation electromagnetic wave of the third wavelength. Similarly, the value of the fourth electrical signal obtained based on the thermal radiation electromagnetic wave of the fourth wavelength may not be the same as the value of the second electrical signal obtained based on the thermal radiation electromagnetic wave of the fourth wavelength.

[0094] (c) Based on the third electrical signal, the fourth electrical signal, the third wavelength, the fourth wavelength, and the temperature of the preset target calibration object, the standard coefficient K in the temperature measurement period is determined using the following formula (1): ’ :

[0095]

[0096] Among them, C 2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 )′ is the third electrical signal; S(λ 2 )' is the fourth electrical signal; t is the preset temperature of the target calibration object; K' is the standard coefficient of the temperature measurement cycle;

[0097] (d) The average value of the standard coefficient of each temperature measurement cycle within the preset temperature measurement time period is determined as the calibration standard coefficient K.

[0098] It can be understood that the above steps (a), (b), (c) and (d) are actually a process of using the above temperature detection system to detect a target calibration object of known temperature before using the above temperature detection system to detect the temperature of the target object to be detected, so as to determine the calibration standard coefficient that can represent the temperature detection performance of the temperature detection system.

[0099] In a specific application scenario, after the calibration standard coefficient is determined, the target calibration object can be replaced by the target object to be measured, so that the temperature detection system can be used to perform temperature detection on the target object to be measured.

[0100] Specifically, after the calibration standard coefficient is determined, the temperature T of the target object to be measured in the temperature measurement period can be determined based on the predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal using the following formula (2):

[0101]

[0102] Among them, C 2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 ) is the first electrical signal; S(λ 2 ) is the second electrical signal; K is a predetermined calibration standard coefficient; T is the temperature of the target object to be measured in the temperature measurement cycle.

[0103] Next, the principle of temperature detection of the target object to be tested according to the above formula will be introduced:

[0104] In an ideal state, the first electrical signal S(λ 1 ) is composed of:

[0105]

[0106] Among them, ε(λ 2 ) is the target object at wavelength λ 2 The emissivity under 2 ) is the target object at wavelength λ 2 The transmittance under 2 is the predetermined optical power of the second light source; G can be obtained by the differential equation and boundary conditions under the steady-state temperature field, where: D is the thermal diffusion coefficient of the object to be measured, f is the modulation frequency of the first light source or the second light source, K is the thermal conductivity of the object to be measured; θL(λ1 , T) is Planck's formula for the real temperature T and wavelength λ 1 The first derivative of the spectral radiance at the temperature; λmin is the lower wavelength limit of the radiation detector response, λmax is the upper wavelength limit of the radiation detector response; R(λ 1 ) is the spectral responsivity function of the radiation detector; θ is the predetermined measurement solid angle; ε(λ 1 ) is the target object at wavelength λ 1 The emissivity under 1 ) is the target object at wavelength λ 1 d is the distance between the first light source or the second light source and the optical center of the focusing lens; F is the focal length of the focusing lens.

[0107] In an ideal state, the second electrical signal S(λ 2 ) is composed of:

[0108]

[0109] Among them, P 1 is the predetermined optical power of the first light source; Planck's formula for the real temperature T and wavelength λ 2 The first derivative of the spectral radiance at the temperature; R(λ 2 ) is the spectral responsivity function of the radiation detector.

[0110] After obtaining the value of the first electrical signal and the value of the second electrical signal in each temperature measurement period, by comparing formula (3) with formula (4), we can obtain:

[0111]

[0112] It can be found from the above formula (5) that by comparing the values ​​of the two signals, the transmittance term and the emissivity term can be eliminated, thereby eliminating the influence of the transmittance and emissivity.

[0113] Furthermore, after obtaining the first electrical signal and the second electrical signal, the temperature of the target object to be measured in the temperature measurement period can be determined based on the predetermined calibration standard coefficients, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal using formula (2). Since there are no transmittance terms and emissivity terms in formula (2), the obtained temperature T of the target object to be measured may not be affected by the transmittance and emissivity.

[0114] The above describes the principle of temperature detection in an ideal state. However, due to the inevitable drift characteristics of the light wave filter, this drift characteristic will cause the thermal radiation electromagnetic wave passing through the light wave filter to have a wavelength offset Δλ. Therefore, in actual situations, the temperature detection system is in a non-ideal state. Here, the wavelength offset Δλ is related to the light wave filter, and the size of the wavelength offset is generally marked on the light wave filter.

[0115] When the temperature detection system is in a non-ideal state, the first electrical signal S(λ 1 ) is composed of:

[0116]

[0117] The second electrical signal S(λ) received by the temperature detection device 2 ) is composed of:

[0118]

[0119] After the value of the first electrical signal and the value of the second electrical signal are obtained in each temperature measurement period, by comparing formula (6) with formula (7), we can obtain:

[0120]

[0121] It can be found from the above formula (8) that by comparing the values ​​of the two signals, the transmittance term and the emissivity term can be eliminated, and thus the influence of the transmittance and emissivity can be eliminated.

[0122] Furthermore, after obtaining the first electrical signal and the second electrical signal, the temperature of the target object to be measured in the temperature measurement period can be determined based on the predetermined calibration standard coefficients, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal using formula (2). Since there are no transmittance terms and emissivity terms in formula (2), the obtained temperature T of the target object to be measured may not be affected by the transmittance and emissivity.

[0123] S104: Determine the temperature of the target object to be measured based on the temperature of the target object to be measured in each temperature measurement cycle within the preset temperature measurement time period.

[0124] As an example, in this step, the average value of the temperature of the target object to be measured in each temperature measurement cycle within a preset temperature measurement time period may be determined as the temperature of the target object to be measured.

[0125] As another example, in this step, the truncated mean of the temperature of the target object to be measured in each temperature measurement period within a preset temperature measurement time period may be determined as the temperature of the target object to be measured.

[0126] An exemplary embodiment of the present application provides a temperature detection method, in which a first light source and a second light source are used to actively illuminate the surface of a target object to be measured at a predetermined frequency in the form of alternating irradiation, and then a thermal radiation electromagnetic wave representing the disturbed temperature rise of the target object to be measured is collected. The thermal radiation electromagnetic wave representing the disturbed temperature rise can be distinguished from the thermal radiation electromagnetic wave representing the ambient temperature emitted by the ambient temperature rise, so the influence of the ambient temperature on the temperature measurement result can be ignored. In addition, by actively disturbing the target object to be measured with the first light source and the second light source of two wavelengths, the transmittance term and the emissivity term can be eliminated in subsequent calculations, so that the obtained temperature detection result can avoid being affected by the transmittance and the emissivity.

[0127] Based on the same inventive concept, an embodiment of the present application also provides a temperature detection device.

[0128] See also Figure 3 As shown, Figure 3 The schematic diagram of the structure of a temperature detection device provided by an exemplary embodiment of the present application is as follows. The temperature detection device 300 includes:

[0129] The control module 301 is used to control the first light source and the second light source to irradiate the target object to be measured with the light wave of the first wavelength and the light wave of the second wavelength alternately in the same preset irradiation time period at a predetermined frequency in each temperature measurement period within a preset temperature measurement time period, so that the target object to be measured generates thermal radiation electromagnetic waves of any wavelength within a preset wavelength band;

[0130] A receiving module 302, configured to receive a first electrical signal and a second electrical signal for each temperature measurement period within a preset temperature measurement time period;

[0131] The sub-calculation module 303 is used to determine the temperature of the target object to be measured in the temperature measurement period based on the predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal;

[0132] The calculation module 304 is used to determine the temperature of the target object to be measured based on the temperature of the target object to be measured in each temperature measurement cycle within the preset temperature measurement time period.

[0133] In a possible implementation manner, the sub-calculation module 303 is specifically configured to:

[0134] Based on the predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal, the temperature of the target object to be measured in the temperature measurement cycle is determined using the following formula:

[0135]

[0136] Among them, C2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 ) is the first electrical signal; S(λ 2 ) is the second electrical signal; K is a predetermined calibration standard coefficient.

[0137] In a possible implementation, the calculation module 304 is specifically configured to:

[0138] The average value of the temperature of the target object to be measured in each temperature measurement cycle within a preset temperature measurement time period is determined as the temperature of the target object to be measured, or,

[0139] The truncated mean value of the temperature of the target object to be measured in each temperature measurement period within the preset temperature measurement time period is determined as the temperature of the target object to be measured.

[0140] In a possible implementation manner, the temperature detection device 300 further includes: a calibration standard coefficient determination module 305 (not shown in the figure), wherein the calibration standard coefficient determination module 305 is specifically used to:

[0141] Controlling the first light source and the second light source to irradiate the target calibration object with light waves of the first wavelength and light waves of the second wavelength alternately at the same preset irradiation time period and at a predetermined frequency in each temperature measurement period within a preset temperature measurement time period, so that the target calibration object generates thermal radiation electromagnetic waves of preset wavelength bands respectively;

[0142] For each temperature measurement cycle within a preset temperature measurement time period, a third electrical signal and a fourth electrical signal are received; the third electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a third wavelength, and the fourth electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a fourth wavelength; the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength are respectively obtained by filtering the light wave of the first wavelength, the light wave of the second wavelength, and the thermal radiation electromagnetic wave of a preset wavelength band generated by the first light source and the second light source irradiating the target calibration object;

[0143] Based on the third electrical signal, the fourth electrical signal, the third wavelength, the fourth wavelength, and the temperature of the preset target calibration object, the standard coefficient in the temperature measurement cycle is determined using the following formula:

[0144]

[0145] Among them, C 2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 )′ is the third electrical signal; S(λ 2)' is the fourth electrical signal; t is the preset temperature of the target calibration object; K' is the standard coefficient of the temperature measurement cycle;

[0146] The average value of the standard coefficient of each temperature measurement cycle within the preset temperature measurement time period is determined as the calibration standard coefficient.

[0147] The temperature detection device provided by the exemplary embodiment of the present application actively irradiates the surface of the target object to be measured at a predetermined frequency by alternatingly irradiating the first light source and the second light source, and then collects thermal radiation electromagnetic waves representing the disturbed temperature rise of the target object to be measured. The thermal radiation electromagnetic waves representing the disturbed temperature rise can be distinguished from the thermal radiation electromagnetic waves representing the ambient temperature emitted by the ambient temperature increase, so the influence of the ambient temperature on the temperature measurement result can be ignored. In addition, by actively disturbing the target object to be measured by the first light source and the second light source with two wavelengths, the transmittance term and the emissivity term can be eliminated in the subsequent calculation, so that the obtained temperature detection result can avoid being affected by the transmittance and the emissivity.

[0148] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 4 As shown in , the electronic device 400 includes a processor 410 , a memory 420 and a bus 430 .

[0149] The memory 420 stores machine-readable instructions executable by the processor 410. When the electronic device 400 is running, the processor 410 communicates with the memory 420 through the bus 430. When the machine-readable instructions are executed by the processor 410, the steps of the temperature detection method in the above method embodiment can be executed. The specific implementation method can be found in the method embodiment, which will not be repeated here.

[0150] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the temperature detection method in the above method embodiment can be executed. The specific implementation method can be found in the method embodiment, which will not be repeated here.

[0151] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0152] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0153] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0154] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0155] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application can essentially be embodied in the form of a software product, or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0156] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A temperature detection system, It is characterized in that The temperature detection system comprises: A first light source and a second light source, wherein the first light source is used to generate a light wave of a first wavelength, and the second light source is used to generate a light wave of a second wavelength, and the first light source and the second light source are used to irradiate the target object to be measured with the light wave of the first wavelength and the light wave of the second wavelength alternately at the same preset irradiation time period and at a preset frequency in each temperature measurement period within a preset temperature measurement time period, so that the target object to be measured generates thermal radiation electromagnetic waves of any wavelength within a preset band; wherein the first wavelength and the second wavelength are within the preset band; and the duration of each temperature measurement period is equal to twice the duration of the preset irradiation time period; A light wave filtering device, used for receiving the light wave of the first wavelength and the light wave of the second wavelength reflected by the target object to be tested and the thermal radiation electromagnetic wave of any wavelength within the preset wavelength band, and screening out the thermal radiation electromagnetic wave of the third wavelength from the light wave of the first wavelength and the thermal radiation electromagnetic wave of the preset wavelength band, and screening out the thermal radiation electromagnetic wave of the fourth wavelength from the light wave of the second wavelength and the thermal radiation electromagnetic wave of the preset wavelength band; wherein the third wavelength is not equal to the first wavelength, and the fourth wavelength is not equal to the second wavelength; a radiation detector, configured to receive the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength transmitted from the optical wave filtering device, and convert the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength into corresponding first electrical signals and second electrical signals respectively; A temperature detection device is used to receive the first electrical signal and the second electrical signal, and determine the temperature of the target object to be detected based on the first electrical signal and the second electrical signal.

2. The temperature detection system according to claim 1, It is characterized in that The light wave filtering device comprises a condenser lens and a filter wheel, and the filter wheel is provided with a first filter and a second filter; The condenser lens is used to receive the light wave of the first wavelength reflected by the target object to be tested, the light wave of the second wavelength reflected by the target object to be tested, and the thermal radiation electromagnetic wave of the preset wavelength band, and send the light wave of the first wavelength, the light wave of the second wavelength, and the thermal radiation electromagnetic wave of any wavelength band within the preset wavelength band to the filter wheel; wherein the first light source and the second light source are at the same distance from the center of the condenser lens; The filter wheel is used to filter out the thermal radiation electromagnetic wave of a third wavelength from the light wave of the first wavelength and the thermal radiation electromagnetic wave of any wavelength within the preset wavelength band through the first filter when receiving the light wave of the first wavelength and the thermal radiation electromagnetic wave of a preset wavelength band. When receiving the light wave of the second wavelength and the thermal radiation electromagnetic wave of the preset wavelength band, the thermal radiation electromagnetic wave of the fourth wavelength is filtered out from the light wave of the second wavelength and the thermal radiation electromagnetic wave of any wavelength band within the preset wavelength band by the second filter.

3. The temperature detection system according to claim 1, It is characterized in that The temperature detection device comprises: A control module, used to control the first light source and the second light source to irradiate the target object to be measured with light waves of the first wavelength and light waves of the second wavelength alternately for the same preset irradiation time period in each temperature measurement period within a preset temperature measurement time period, so that the target object to be measured generates thermal radiation electromagnetic waves of any wavelength within a preset wavelength band; A receiving module, used for receiving a first electrical signal and a second electrical signal for each temperature measurement period within a preset temperature measurement time period; A sub-calculation module, used to determine the temperature of the target object to be measured in the temperature measurement period based on a predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal; The calculation module is used to determine the temperature of the target object to be measured based on the temperature of the target object to be measured in each temperature measurement cycle within the preset temperature measurement time period.

4. The temperature detection system according to claim 3, It is characterized in that The sub-computing module is specifically used for: Based on the predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal, the temperature of the target object to be measured in the temperature measurement cycle is determined using the following formula: Among them, C 2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 ) is the first electrical signal; S(λ 2 ) is the second electrical signal; K is a predetermined calibration standard coefficient.

5. A temperature detection method, It is characterized in that Applied to the temperature detection device according to any one of claims 1 to 4, the temperature detection method comprises: Control the first light source and the second light source to irradiate the target object to be measured with light waves of the first wavelength and light waves of the second wavelength alternately at the same preset irradiation time period and at a preset frequency in each temperature measurement cycle within a preset temperature measurement time period, so that the target object to be measured generates thermal radiation electromagnetic waves of any wavelength within a preset band; wherein the first wavelength and the second wavelength are within the preset band; and the duration of each temperature measurement cycle is equal to twice the duration of the preset irradiation time period; For each temperature measurement cycle within a preset temperature measurement time period, a first electrical signal and a second electrical signal are received; the first electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a third wavelength, and the second electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a fourth wavelength; the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength are respectively obtained by filtering a light wave of the first wavelength, a light wave of the second wavelength, and a thermal radiation electromagnetic wave of any wavelength within a preset wavelength band generated by the first light source and the second light source irradiating the target object to be measured; Determine the temperature of the target object to be measured in the temperature measurement period based on a predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal; The temperature of the target object to be measured is determined based on the temperature of the target object to be measured in each temperature measurement cycle within the preset temperature measurement time period.

6. The temperature detection method according to claim 5, It is characterized in that Based on the predetermined calibration standard coefficient, the third wavelength, the fourth wavelength, the first electrical signal and the second electrical signal, the temperature of the target object to be measured in the temperature measurement cycle is determined using the following formula: Among them, C 2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 ) is the first electrical signal; S(λ 2 ) is the second electrical signal; K is a predetermined calibration standard coefficient; T is the temperature of the target object to be measured in the temperature measurement cycle.

7. The temperature detection method according to claim 5, It is characterized in that The determining the temperature of the target object to be measured based on the temperature of the target object to be measured in each temperature measurement cycle within the preset temperature measurement time period includes: The average value of the temperature of the target object to be measured in each temperature measurement cycle within a preset temperature measurement time period is determined as the temperature of the target object to be measured, or, The truncated mean value of the temperature of the target object to be measured in each temperature measurement period within the preset temperature measurement time period is determined as the temperature of the target object to be measured.

8. The temperature detection method according to claim 5, It is characterized in that The step of determining the calibration standard coefficient comprises: Control the first light source and the second light source to irradiate the target calibration object with light waves of the first wavelength and light waves of the second wavelength alternately for the same preset irradiation time period and at a preset frequency in each temperature measurement period within a preset temperature measurement time period, so that the target calibration object generates thermal radiation electromagnetic waves of any wavelength within a preset wavelength band; For each temperature measurement cycle within a preset temperature measurement time period, a third electrical signal and a fourth electrical signal are received; the third electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a third wavelength, and the fourth electrical signal is obtained by converting a thermal radiation electromagnetic wave based on a fourth wavelength; the thermal radiation electromagnetic wave of the third wavelength and the thermal radiation electromagnetic wave of the fourth wavelength are respectively obtained by filtering the light wave of the first wavelength, the light wave of the second wavelength, and the thermal radiation electromagnetic wave of a preset wavelength band generated by the first light source and the second light source irradiating the target calibration object; Based on the third electrical signal, the fourth electrical signal, the third wavelength, the fourth wavelength, and the temperature of the preset target calibration object, the standard coefficient in the temperature measurement cycle is determined using the following formula: Among them, C 2 is the second radiation constant; λ 1 is the third wavelength; 2 is the fourth wavelength; S(λ 1 )' is the third electrical signal; S(λ 2 )' is the fourth electrical signal; t is the preset temperature of the target calibration object; K' is the standard coefficient of the temperature measurement cycle; The average value of the standard coefficient of each temperature measurement cycle within the preset temperature measurement time period is determined as the calibration standard coefficient.

9. An electronic device, It is characterized in that include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and the machine-readable instructions are executed by the processor to execute the steps of the temperature detection method as described in any one of claims 5 to 8.

10. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the temperature detection method according to any one of claims 5 to 8 are executed.

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