CN212645901U

CN212645901U - Blackbody radiation device and face recognition and temperature measurement system

Info

Publication number: CN212645901U
Application number: CN202021321481.3U
Authority: CN
Inventors: 王旭; 马骏生
Original assignee: Shenzhen Sensetime Technology Co Ltd
Current assignee: Shenzhen Sensetime Technology Co Ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-03-02
Anticipated expiration: 2030-07-07

Abstract

A black body radiation device and a face recognition and temperature measurement system are provided, the black body radiation device comprises a box body, a black body radiation source and a first display panel, the box body comprises a first side plate, a through hole is formed in the first side plate, the black body radiation source is arranged on the inner surface of the first side plate, the black body radiation source covers the through hole and is exposed to the outer surface of the first side plate through the through hole, the first display panel is arranged on the outer surface of the first side plate, and the first display panel is used for displaying a first temperature of the black body radiation source; the black body radiation source is measured by the temperature measuring device to obtain the measured temperature, the image of the first display panel is identified by the temperature measuring device to obtain the first temperature of the black body radiation source, and the difference value between the measured temperature and the first temperature is calculated to accurately calibrate the temperature measuring device.

Description

Blackbody radiation device and face recognition and temperature measurement system

Technical Field

The disclosure relates to the technical field of thermal imager calibration, in particular to a black body radiation device and a face recognition and temperature measurement system comprising the same.

Background

In recent years, the design and manufacture requirements of high-precision temperature measuring devices are more and more urgent, and the temperature measuring devices are particularly used in the field of non-contact temperature measurement of human bodies. In scenes with high precision requirements such as human body temperature measurement, high-precision calibration or calibration needs to be carried out on the temperature measuring device in the production process.

When the traditional blackbody radiation device is used for calibrating the temperature measuring device, the temperature measuring device does not acquire the actual temperature of the blackbody radiation source, but the temperature of the set blackbody radiation source is used as the measured temperature for reference, however, when the blackbody radiation source is just started to work and is influenced by the external environment, the actual temperature of the blackbody radiation source is different from the set temperature, and the calibration of the temperature measuring device is inaccurate.

SUMMERY OF THE UTILITY MODEL

In a first aspect, the present disclosure provides a blackbody radiation device for calibrating a temperature measuring device, the blackbody radiation device includes a box, a blackbody radiation source and a first display panel, the box includes a first side plate, a through hole is formed in the first side plate, the blackbody radiation source is arranged on an inner surface of the first side plate, the blackbody radiation source covers the through hole and is exposed to an outer surface of the first side plate through the through hole, a first display panel is arranged on the outer surface of the first side plate, and the first display panel is used for displaying a first temperature of the blackbody radiation source;

the black body radiation source and the temperature measuring device are oppositely arranged at intervals, the infrared radiation of the black body radiation source is received by the temperature measuring device to obtain the measured temperature of the black body radiation source, the image of the first display panel is identified by the temperature measuring device to obtain the first temperature of the black body radiation source, and the temperature measuring device is calibrated by calculating the difference value between the measured temperature and the first temperature.

The utility model provides a black body radiation device is through setting up the black body radiation source is followed the through-hole exposes extremely the surface of first curb plate, and will first display panel sets up the surface of first curb plate is in order to show the first temperature of black body radiation source, temperature measuring device measures the black body radiation source and discernment first display panel's image obtains the measurement temperature and the first temperature of black body radiation source realize through the difference between them temperature measuring device's accurate demarcation.

In one embodiment, the black body radiation device comprises a first temperature measuring component arranged in the box body, the first temperature measuring component is electrically connected with the first display panel, and the first temperature measuring component is used for measuring the first temperature of the black body radiation source and transmitting the first temperature of the black body radiation source to the first display panel for displaying. The first temperature measuring component measures a first temperature of the blackbody radiation source and displays the first temperature on the first display panel, so that the temperature measuring device can identify a display image of the first display panel, and the first temperature of the blackbody radiation source can be indirectly obtained (through OCR identification).

In one embodiment, the black body radiation device further comprises a heating assembly arranged in the box body and a heating power control assembly electrically connected with the heating assembly, the heating assembly is used for heating the black body radiation source according to a set temperature, so that the temperature of the black body radiation source is the set temperature, and the heating power control assembly is used for controlling the power of the heating assembly. The heating assembly can heat the blackbody radiation source to a set temperature, and the heating power of the heating assembly is adjustable due to the heating power control assembly, so that the heating effect of the heating assembly on the blackbody radiation source is better controlled.

In one embodiment, the power of the heating assembly is adjustable, when the difference between the temperature of the blackbody radiation source and the set temperature is greater than a preset value, the heating power control assembly outputs a first power control signal, when the difference between the temperature of the blackbody radiation source and the set temperature is less than or equal to the preset value, the heating power control assembly outputs a second power control signal, the first power control signal controls the heating assembly to output a first heating power, the second power control signal controls the heating assembly to output a second heating power, and the first heating power is greater than the second heating power. When the temperature of the blackbody radiation source is too much lower than the set temperature, the heating power control component outputs a first power control signal, so that the heating component heats the blackbody radiation source with larger power to rapidly heat the blackbody radiation source; when the temperature of the blackbody radiation source is close to the set temperature, the heating power control assembly outputs a second power control signal to reduce the heating power of the heating assembly, so that the blackbody radiation source is slowly heated to avoid potential safety hazards.

In one embodiment, the blackbody radiation device further comprises a temperature protection component electrically connected with the heating component and the heating power control component, and the temperature protection component is used for limiting the temperature of the blackbody radiation source within a preset range. When the blackbody radiation device breaks down, it is probably right the blackbody radiation source lasts the heating and can't be controlled, the existence of temperature protection subassembly can be in when the temperature of blackbody radiation source is higher than the scope of predetermineeing, in time the open circuit, guaranteed the blackbody radiation source can not lead to the potential safety hazard because of the high temperature.

In one embodiment, the blackbody radiator further comprises a second display panel disposed on an outer surface of the first side plate, the second display panel being configured to display an ambient temperature. The second display panel with first display panel is located equally the surface of first curb plate, just the second display panel shows ambient temperature, is convenient for temperature measuring device discerns simultaneously first display panel with the display image of second display panel, in order to obtain simultaneously the first temperature of black body radiation source with ambient temperature.

In one embodiment, the blackbody radiator further comprises a second temperature measuring assembly electrically connected to the second display panel, the second temperature measuring assembly being configured to measure the ambient temperature and transmit the ambient temperature to the second display panel for display. The second temperature measurement assembly can accurately measure the ambient temperature and display the ambient temperature on the second display panel so as to monitor the ambient temperature.

In one embodiment, the black body radiator further includes an ambient light brightness detection component for detecting an ambient light brightness of an environment in which the black body radiator is located. The ambient light brightness detection assembly can detect the ambient light brightness of the environment where the black body radiation device is located in real time so as to provide display brightness adjusting basis for the first display panel and the second display panel.

In one embodiment, the black body radiation device further comprises a brightness adjusting component, the brightness adjusting component is electrically connected with the first display panel, the second display panel and the ambient light brightness detecting component respectively, the ambient light brightness detecting component detects the ambient light brightness of the environment where the black body radiation device is located and transmits the ambient light brightness to the brightness adjusting component, and the brightness adjusting component adjusts the display brightness of the first display panel and the second display panel according to the received ambient light brightness. The brightness adjusting component can effectively adjust the display brightness of the first display panel and the second display panel to adapt to the ambient light brightness of the environment, so that a clear and resolvable image is presented in the temperature measuring device for identification.

In one embodiment, when the ambient light brightness detection component detects that the ambient light brightness is within the range of natural light brightness, the brightness adjustment component adjusts the display brightness of the first display panel and the second display panel to a natural brightness level; when the environment light brightness detection assembly detects that the environment light brightness is in a low light brightness range, the brightness adjusting assembly adjusts the display brightness of the first display panel and the second display panel to be a low brightness level; when the environment light brightness detection assembly detects that the environment light brightness is within the strong light brightness range, the brightness adjusting assembly adjusts the display brightness of the first display panel and the second display panel to be a high brightness level. The environment light brightness detection assembly and the brightness adjusting assembly are matched for use, so that the temperature measuring device cannot generate the problems of glare and the like due to large difference between display brightness and environment light brightness when identifying the display images of the first display panel and the second display panel.

In a second aspect, the present disclosure provides a face recognition and temperature measurement system, which includes a temperature measurement device and a blackbody radiation device as in any one of the embodiments of the first aspect, wherein a blackbody radiation source and a first display panel of the blackbody radiation device are located at the same side of the temperature measurement device, the temperature measurement device measures the blackbody radiation source and obtains a measurement temperature, the temperature measurement device recognizes an image of the first display panel to obtain a first temperature of the blackbody radiation source, and the calibration of the temperature measurement device is achieved by calculating a difference between the measurement temperature and the first temperature.

The face recognition and temperature measurement system provided by the disclosure calibrates the temperature measurement device by setting the blackbody radiation device provided by the disclosure, so that the temperature measurement device can accurately measure the body temperature of a human body. Moreover, the face recognition and temperature measurement system provided by the disclosure obtains the first temperature of the blackbody radiation source by shooting and recognizing the image of the first display panel, and does not need to obtain the first temperature of the blackbody radiation source in a wired transmission manner, thereby avoiding the problem of difficulty in wiring and reducing the cost.

In one embodiment, the temperature measuring device includes a camera module and an identification module, the camera module captures a display image of the first display panel, and the identification module identifies the display image of the first display panel to obtain the first temperature of the blackbody radiation source. The camera shooting assembly and the identification assembly are matched for use, so that the temperature measuring device can accurately acquire the first temperature of the blackbody radiation source.

In one embodiment, the temperature measuring device further comprises a temperature measuring component, wherein the temperature measuring component receives the infrared radiation of the blackbody radiation source to obtain the measured temperature of the blackbody radiation source; the temperature measuring component receives infrared radiation of a human body to obtain the forehead temperature of the human body and converts the forehead temperature into a body temperature. The temperature measuring component obtains the measured temperature of the black body radiation source, compares the measured temperature with the first temperature of the black body radiation source to obtain a measurement error, and then combines the obtained human body temperature measurement with the measurement error to accurately obtain the actual body temperature of the human body.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic block diagram of temperature acquisition of a face recognition and temperature measurement system according to an embodiment.

Fig. 2 is a schematic diagram of the working principle of the face recognition and temperature measurement system according to the embodiment.

Fig. 3 is a schematic perspective view of a blackbody radiator according to an embodiment.

Fig. 4 is a block diagram of a hardware design of a blackbody radiator according to an embodiment.

Fig. 5 is a schematic perspective view of a blackbody radiator according to an embodiment.

Detailed Description

Technical solutions in embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Referring to fig. 1 and fig. 2 together, fig. 1 and fig. 2 are a schematic block diagram of temperature acquisition of a face recognition and temperature measurement system and a schematic working principle diagram of the face recognition and temperature measurement system according to an embodiment, respectively.

The embodiment of the present disclosure provides a face recognition and temperature measurement system, which includes a temperature measurement device 200 and the blackbody radiation device 100 provided by the embodiment of the present disclosure, the blackbody radiation source 20 and the first display panel 31 of the blackbody radiation device 100 are located on the same side of the temperature measurement device 200, the temperature measurement device 200 measures the blackbody radiation source 20 and obtains a measured temperature t2, the temperature measurement device 200 recognizes an image of the first display panel 31 to obtain a first temperature t1 of the blackbody radiation source 20, and calibration of the temperature measurement device 200 is achieved by calculating a difference between the measured temperature t2 and the first temperature t 1.

Wherein the first temperature t1 of black body radiation source 20 refers to the actual temperature of black body radiation source 20.

Wherein, temperature measuring device 200 can be face discernment and temperature measurement all-in-one, also can be the double optical machine of RGB/IR + infrared temperature measurement, and it can be understood that temperature measuring device 200 includes but not limited to above two kinds of models, does not give unnecessary details one by one here.

The first display panel 31 is used for displaying the first temperature t1 of the blackbody radiation source 20 in the blackbody radiation device 100, and the temperature measuring device 200 identifies the display image of the first display panel 31, so that the first temperature t1 of the blackbody radiation source 20 can be obtained. It is understood that the first display panel 31 may also be a digital tube structure, or any structure satisfying the corresponding temperature display function, such as an LCD screen, an OLED screen, a TN screen, etc., and is not limited specifically herein.

The temperature measuring device 200 can also directly measure the blackbody radiation source 20 to obtain the measured temperature t2 of the blackbody radiation source 20.

The blackbody radiation source 20 and the first display panel 31 are located on the same side of the temperature measuring device 200, so that the two processes of the temperature measuring device 200 identifying the display image of the first display panel 31 and measuring the temperature of the blackbody radiation source 20 can be performed simultaneously, the measured temperature t2 and the first temperature t1 of the blackbody radiation source 20 at the same time are obtained, and errors caused by time changes are avoided.

The difference between the measured temperature t2 of the blackbody radiation source 20 and the first temperature t1 is calculated by the processor 210 in the temperature measurement device 200, so that the measurement error t0 of the temperature measurement device 200 is t1-t2, and temperature measurement calibration is realized. The temperature measuring device 200 measures the temperature of the human body to obtain the measured body temperature t3 of the human body, and the processor 210 calculates the actual body temperature t of the human body to be t3+ t0 by combining the measured body temperature t3 of the human body and the measurement error t0 of the temperature measuring device 200. It is understood that the implementation of an algorithm is merely an example, and other linear or non-linear calculations, such as stacking different measurement distances, and more complex compensation schemes at different ambient temperatures, may be implemented, and are not limited in this regard.

The blackbody radiation device 100 may further include a second display panel 32, the second display panel 32 is configured to display the ambient temperature t4, and the temperature measuring device 200 identifies a display image of the second display panel 32, so as to obtain the ambient temperature t 4.

The face recognition and temperature measurement system provided by the embodiment of the disclosure can realize accurate calibration on the temperature measurement device 200 by arranging the blackbody radiation device 100 provided by the embodiment of the disclosure. It can be understood that, not only limited to one calibration, when the temperature measuring device 200 measures the temperature of the human body or other object to be measured, the temperature measuring device 200 can obtain the first temperature t1 and the measured temperature t2 of the blackbody radiation source 20 in real time, that is, the blackbody radiation device 100 provides the relevant reference temperature to the temperature measuring device 200 in real time for uninterrupted and accurate reference, so that the temperature measuring device 200 can accurately obtain the first temperature t of the human body or other object to be measured in real time. In addition, the face recognition and temperature measurement system provided by the embodiment of the disclosure obtains the first temperature t1 of the blackbody radiation source 20 by shooting and recognizing the image of the first display panel 31, and does not need to obtain the first temperature t1 of the blackbody radiation source 20 by wire transmission, thereby avoiding the problem of difficult wiring and reducing the cost.

In one embodiment, the temperature measuring device 200 includes a camera assembly 220 and an identification assembly 230, the camera assembly 220 captures a display image of the first display panel 31, and the identification assembly 230 identifies the display image of the first display panel 31 to obtain the first temperature t1 of the blackbody radiation source 20. The camera assembly 220 and the identification assembly 230 are used together, so that the temperature measuring device 200 can accurately acquire the first temperature t1 of the blackbody radiation source 20. The camera module 220 is configured to capture a display image of the first display panel 31, the first temperature t1 of the black body radiation source 20 is displayed on the display image, and the recognition module 230 recognizes the display image, so as to obtain the first temperature t1 of the black body radiation source 20. In a particular embodiment, Recognition component 230 includes an internal OCR (Optical Character Recognition) Recognition engine to enable Recognition of the display image to obtain the first temperature t1 of blackbody radiation source 20. The recognition component 230 includes, but is not limited to, an OCR recognition engine, and may also be any other manner having a corresponding recognition function, which is not described herein in detail, and it is understood that the recognition component 230 may be a part of the processor 210, or an independent structure independent of the processor 210, and is not specifically limited herein.

In one embodiment, temperature measuring device 200 further includes a temperature measuring assembly 240, wherein temperature measuring assembly 240 receives the infrared radiation from blackbody radiation source 20 to obtain a measured temperature t2 of blackbody radiation source 20; the temperature measuring component 240 obtains the forehead temperature of the human body by receiving the infrared radiation of the human body, and converts the forehead temperature into a measured body temperature t 3. The temperature measuring component 240 obtains the measured temperature t2 of the blackbody radiation source 20, the processor 210 compares the measured temperature t2 with the first temperature t1 of the blackbody radiation source 20 to obtain a measurement error t0 of the temperature measuring device 200, and then the obtained measured body temperature t3 of the human body is combined with the measurement error t0 to accurately obtain the actual body temperature t of the human body. It is understood that temperature measurement component 240 can measure the temperature of blackbody radiation source 20 and the body temperature of the human body simultaneously to achieve the synchronization of the measurement process.

Referring to fig. 3, fig. 3 is a schematic perspective view of a blackbody radiator 100 according to an embodiment.

The embodiment of the disclosure provides a blackbody radiation device 100 for calibrating a temperature measuring device 200, the blackbody radiation device 100 includes a box 10, a blackbody radiation source 20 and a first display panel 31, the box 10 includes a first side plate 11, a through hole 110 is formed on the first side plate 11, the blackbody radiation source 20 is arranged on an inner surface of the first side plate 11, the blackbody radiation source 20 covers the through hole 110 and is exposed to an outer surface 101 of the first side plate 11 through the through hole 110, the outer surface 101 of the first side plate 11 is provided with the first display panel 31, and the first display panel 31 is used for displaying a first temperature of the blackbody radiation source 20;

the blackbody radiation source 20 and the temperature measuring device 200 are oppositely arranged at intervals, the infrared radiation of the blackbody radiation source 20 is received by the temperature measuring device 200 to obtain the measured temperature of the blackbody radiation source 20, the image of the first display panel 31 is identified by the temperature measuring device 200 to obtain the first temperature of the blackbody radiation source 20, and the temperature measuring device 200 is calibrated by calculating the difference between the measured temperature and the first temperature.

Wherein, a containing space is provided in the box 10 for containing the blackbody radiation source 20. In one embodiment, the box 10 may have a rectangular parallelepiped shape, and includes a bottom plate 13, a top plate 12, and side plates connected between the top plate 12 and the bottom plate 13, wherein the top plate 12 and the bottom plate 13 are opposite, the top plate 12, the bottom plate 13, and the side plates jointly enclose to form a receiving space, and the side plates include the first side plate 11. In other embodiments, the housing 10 may have other shapes such as an ellipsoid, a sphere, etc.

The first side plate 11 of the box 10 is provided with a through hole 110, the blackbody radiation source 20 is disposed on the inner surface of the first side plate 11, and the blackbody radiation source 20 covers the through hole 110 and is exposed to the outer surface 101 of the first side plate 11 through the through hole 110 to realize a corresponding radiation function. The through holes include round holes, square holes or through holes with other shapes, which are not limited herein.

The first display panel 31 can display the first temperature of the blackbody radiation source 20, and the first display panel 31 is also located on the outer surface 101 of the first side plate 11, and the first display panel 31 and the blackbody radiation source 20 are arranged at an interval without mutual influence. It can be understood that the blackbody radiation source 20 and the first display panel 31 are both located on the first side plate 11, and when the temperature measuring device 200 is calibrated, the blackbody radiation source 20 and the first display panel 31 are located on the same side of the temperature measuring device 200, so that the temperature measuring operation of the temperature measuring device 200 on the blackbody radiation source 20 and the identification operation on the first display panel 31 can be performed simultaneously, the operation is convenient, and certain timeliness is guaranteed.

The first side plate 11 may be a side plate in any direction between the top plate 12 and the bottom plate 13 of the box 10, and is not specifically limited herein as long as the blackbody radiation source 20 and the first display panel 31 are located on the same side of the temperature measuring device 200.

According to the blackbody radiation device 100 provided by the embodiment of the disclosure, the blackbody radiation source 20 is arranged to be exposed to the outer surface 101 of the first side plate 11 from the through hole 110, the first display panel 31 is arranged on the outer surface 101 of the first side plate 11 to display the first temperature of the blackbody radiation source 20, the temperature measuring device 200 measures the blackbody radiation source 20 and identifies the image of the first display panel 31 to obtain the measured temperature and the first temperature of the blackbody radiation source 20, and the calibration of the temperature measuring device 200 is realized through the difference value of the two temperatures.

It can be understood that, not only limited to one calibration, in the process of measuring the temperature of the human body or other objects to be measured by the temperature measuring device 200, with the blackbody radiation device 100 provided in the embodiment of the present disclosure, the temperature measuring device 200 can obtain the first temperature and the measured temperature of the blackbody radiation source 20 in real time, that is, the blackbody radiation device 100 provides the relevant reference temperature for the temperature measuring device 200 to refer to, so that the temperature measuring device 200 can accurately obtain the first temperature of the human body or other objects to be measured in real time.

Referring to fig. 4, fig. 4 is a schematic block diagram of a hardware design of a blackbody radiator 100 according to an embodiment.

In one embodiment, the blackbody radiator 100 includes a first temperature measuring assembly 41 disposed in the housing 10, the first temperature measuring assembly 41 is electrically connected to the first display panel 31, and the first temperature measuring assembly 41 is configured to measure a first temperature of the blackbody radiation source 20 and transmit the first temperature of the blackbody radiation source 20 to the first display panel 31 for displaying. It is understood that the blackbody radiator 100 further includes a data processor 50, the first temperature measuring assembly 41 measures the first temperature of the blackbody radiator 20, and the data processor 50 collects and processes the measured first temperature data and transmits the first temperature data of the blackbody radiator 20 to the first display panel 31, so that the first display panel 31 displays the first temperature of the blackbody radiator 20. The temperature measuring device 200 recognizes the display image of the first display panel 31 to acquire the first temperature of the blackbody radiation source 20.

In one embodiment, the blackbody radiator 100 further includes a second display panel 32, the second display panel 32 is disposed on the outer surface 101 of the first side plate 11, and the second display panel 32 is used for displaying the ambient temperature. The second display panel 32 and the first display panel 31 are both located on the outer surface 101 of the first side plate 11, and the two are disposed at an interval without affecting each other. The first display panel 31, the second display panel 32 and the blackbody radiation source 20 are all located on the same side of the temperature measuring device 200, so that the temperature measuring device 200 can obtain the first temperature of the environment while obtaining the measured temperature and the first temperature of the blackbody radiation source 20.

In one embodiment, the blackbody radiator 100 further includes a second temperature measuring device 42, the second temperature measuring device 42 is electrically connected to the second display panel 32, and the second temperature measuring device 42 is used for measuring the ambient temperature and transmitting the ambient temperature to the second display panel 32 for displaying. It will be appreciated that the second temperature measurement assembly 42 measures ambient temperature, and that ambient temperature data may likewise be collected and processed by the data processor 50 for transmission to the second display panel 32, such that the second display panel 32 displays the ambient temperature. The temperature measuring device 200 recognizes the display image of the second display panel 32, thereby acquiring the ambient temperature. It is understood that the temperature measuring device 200 can obtain the ambient temperature and the first temperature of the black body radiation source 20 in the same manner, that is, the image capturing module 220 captures the display images of the first display panel 31 and the second display panel 32, and the identifying module 230 identifies the display images to obtain the ambient temperature and the first temperature of the black body radiation source 20.

In one embodiment, the black body radiator 100 further includes an ambient light level detecting assembly 91, and the ambient light level detecting assembly 91 is used for detecting the ambient light level of the environment in which the black body radiator 100 is located. The ambient light level detecting assembly 91 is capable of detecting the ambient light level of the environment in which the blackbody radiation device 100 is located in real time to provide the first display panel 31 and the second display panel 32 with the display brightness adjusting basis.

In one embodiment, the black body radiator 100 further includes a brightness adjustment component 92, the brightness adjustment component 92 is electrically connected to the first display panel 31, the second display panel 32 and the ambient light brightness detection component 91, the ambient light brightness detection component 91 detects the ambient light brightness of the environment where the black body radiator 100 is located and transmits the ambient light brightness to the brightness adjustment component 92, and the brightness adjustment component 92 adjusts the display brightness of the first display panel 31 and the second display panel 32 according to the received ambient light brightness. The existence of the brightness adjusting assembly 92 can effectively adjust the display brightness of the first display panel 31 and the second display panel 32 to adapt to the environmental light brightness of the environment where the first display panel 31 and the second display panel 32 are located, so that a large difference between the display brightness of the first display panel 31 and the environmental light brightness cannot exist, the problems of glare and the like are prevented, and the problem that the displayed image acquired by the camera assembly 220 is not clear and cannot be identified is avoided.

In one embodiment, when the ambient light brightness detection assembly 91 detects that the ambient light brightness is within the range of natural light brightness, the brightness adjustment assembly 92 adjusts the display brightness of the first display panel 31 and the second display panel 32 to a natural brightness level; when the ambient light luminance detecting assembly 91 detects that the ambient light luminance is within the low light luminance range, the luminance adjusting assembly 92 reduces the display luminance values of the first display panel 31 and the second display panel 32 to make the display luminance thereof a low luminance level; when the ambient light luminance detecting member 91 detects that the ambient light luminance is within the strong light luminance range, the luminance unit increases the display luminance values of the first display panel 31 and the second display panel 32 to have the display luminance at a high luminance level. The ambient light brightness detecting assembly 91 and the brightness adjusting assembly 92 are used in cooperation, so that when the temperature measuring device identifies the display images of the first display panel 31 and the second display panel 32, the problems of glare and the like caused by large difference between the display brightness and the ambient light brightness are avoided. The ambient light brightness is within a natural light brightness range, it can be understood that the illuminance value range of the environment where the black body radiator 100 is located is a1-a2 lux, at this time, the display brightness of the first display panel 31 and the second display panel 32 is at a natural brightness level, that is, the display brightness of the display panels is configured with an average driving current of S1-S2 mA; the ambient light brightness is in the low light brightness range, it can be understood that the illuminance value range of the environment where the black body radiator 100 is located is B1-B2 lux, at this time, the display brightness of the first display panel 31 and the second display panel 32 is at a low brightness level, that is, the display brightness of the display panels is configured with the average driving current of S3-S4 mA; the ambient light brightness is in the range of strong light brightness, and it can be understood that the illuminance value range of the environment where the black body radiator 100 is located is C1-C2 lux, and at this time, the display brightness of the first display panel 31 and the second display panel 32 is at a high brightness level, that is, the display brightness of the display panels is configured with the average driving current of S5-S6 mA. It is understood that the values of a1, a2, B1, B2, C1 and C2 may be determined according to environmental factors and usage requirements, and are not particularly limited herein. And a plurality of gear gradients can be designed in the ranges of A1-A2, B1-B2 and C1-C2 so as to adjust the display brightness of the display panel by the gear gradients corresponding to the display brightness. Similarly, the values of S1, S2, S3, S4, S5 and S6 are determined according to the illuminance value of the environment, and are not particularly limited. And a plurality of gear gradients can be designed in the ranges of S1-S2, S3-S4 and S5-S6, and correspond to the plurality of gear gradients in the ranges of A1-A2, B1-B2 and C1-C2.

The temperature data measured by the first temperature measuring assembly 41 and the second temperature measuring assembly 42, and the ambient light brightness data detected by the ambient light brightness detecting assembly 91 are collected, processed and transmitted to the first display panel 31 and the second display panel 32 by the data processor 50, respectively, so that the first display panel 31 displays the first temperature of the blackbody radiation source 20, the second display panel 32 displays the ambient temperature, and the first display panel 31 and the second display panel 32 have corresponding display brightness. It is understood that the data processor 50 to which the first temperature measuring assembly 41, the second temperature measuring assembly 42 and the ambient light level detecting assembly 91 are connected may be an integrated data processor 50, or may be three independent data processors 50, and is not limited in particular.

In one embodiment, the blackbody radiator 100 further includes a heating unit 60 disposed in the housing 10 and a heating power control unit 70 electrically connected to the heating unit 60, the heating unit 60 is configured to heat the blackbody radiation source 20 according to a set temperature so that the temperature of the blackbody radiation source 20 is the set temperature, and the heating power control unit 70 is configured to control the power of the heating unit 60. It is understood that when the blackbody radiator 100 is used for calibration of the temperature measuring device 200, a certain set temperature is determined, and then the blackbody radiator 20 is heated so that the temperature of the blackbody radiator 20 reaches the set temperature. In the present embodiment, the heating assembly 60 is provided to effectively heat the blackbody radiation source 20, so that the blackbody radiation source has a corresponding radiation function.

In one embodiment, the power of the heating element 60 is adjustable, when the difference between the temperature of the blackbody radiation source 20 and the set temperature is greater than a preset value, the heating power control element 70 outputs a first power control signal, when the difference between the temperature of the blackbody radiation source 20 and the set temperature is less than or equal to the preset value, the heating power control element 70 outputs a second power control signal, the first power control signal controls the heating element 60 to output a first heating power, the second power control signal controls the heating element 60 to output a second heating power, and the first heating power is greater than the second heating power. Wherein the heating power control assembly 70 outputs a power control signal to the heating assembly 60 to control the heating power of the heating assembly 60, in a specific embodiment, the heating power control assembly 70 controls the heating power of the heating assembly 60 in a pulse width modulation or pulse frequency modulation manner, so that the heating power of the heating assembly 60 is adjustable.

It can be understood that, when the blackbody radiation device 100 is in the off state, the temperature of the blackbody radiation source 20 is the same as the ambient temperature, and if the difference between the set temperature and the temperature of the blackbody radiation source 20 is larger, that is, the difference between the temperature of the blackbody radiation source 20 and the set temperature is larger than the preset value, the heating power of the heating assembly 60 can be controlled by the heating power control assembly 70 to increase, so as to achieve the rapid heating of the blackbody radiation source 20, thereby improving the working efficiency. When the difference between the set temperature and the temperature of the blackbody radiation source 20 is smaller, that is, the difference between the temperature of the blackbody radiation source 20 and the set temperature is smaller than the preset value, the heating power of the heating assembly 60 can be reduced by controlling the heating power control assembly 70, so that the blackbody radiation source 20 can be slowly heated, and the corresponding potential safety hazard can be reduced.

Pulse width modulation or pulse frequency modulation is a way to realize fine adjustment of output power. The heating power control assembly 70 controls the heating power of the heating assembly 60 in a pulse width modulation or pulse frequency modulation manner, so that precise heating regulation and control of the blackbody radiation source 20 can be effectively realized, and the temperature of the blackbody radiation source 20 can reach dynamic balance at a set temperature.

In one embodiment, the blackbody radiator 100 further comprises a temperature protection assembly 80 electrically connected to the heating assembly 60 and the heating power control assembly 70, wherein the temperature protection assembly 80 is configured to limit the temperature of the blackbody radiator 20 within a predetermined range. It is understood that the temperature protection component 80 can be connected to the blackbody radiation source 20 to detect the temperature of the blackbody radiation source 20 at any time, and a protection temperature can be set, when the first temperature of the blackbody radiation source 20 is greater than or equal to the protection temperature, the temperature protection component 80 is in an off state, and the power control signal output from the heating power control component 70 to the heating component 60 is blocked; when the first temperature of the blackbody radiation source 20 is lower than the protection temperature, the temperature protection component 80 is in an on state, so that the power control signal is output from the heating power control component 70 to the heating component 60, wherein the protection temperature is higher than the set temperature.

It can be appreciated that the presence of the temperature protection assembly 80 can effectively eliminate the safety hazard of continuous heating due to the black body radiator 100 failing during use. Wherein, temperature protection subassembly 80 is connected with black body radiation source 20 to thereby survey the better corresponding management and control function that carries out of first temperature of black body radiation source 20, when black body radiation device 100 breaks down and continuously heats, temperature protection subassembly 80 can in time close, can not be higher than the protection temperature with the temperature of effectively guaranteeing black body radiation source 20, thereby has eliminated the potential safety hazard.

Referring to fig. 5, fig. 5 is a schematic perspective view of a blackbody radiator 100 according to an embodiment.

In one embodiment, the housing 10 may further include a control portion 14, the control portion 14 protrudes from the top plate 12, and the data processor 50 and the heating power control assembly 70 may be disposed in the control portion 14. In other embodiments, the control portion 14 may be disposed at other positions, and only needs to be disposed at intervals with the through hole 110 on the first side plate 11. The control unit 14 is further provided with a user interaction module 140, and the user interaction module 140 may be, for example, a display 141, a key 142, or the like. The display screen 141 is used to display the current state of the blackbody radiation device 100. The current state includes the set temperature of the black body radiator 20, the heating power of the black body radiator 20, and the like. The display screen 141 may also display information such as a calendar, a user name, and the like. The key 142 is used for receiving control commands input by a user, such as entering and modifying a set temperature of the blackbody radiation source and a specific value of heating power of the blackbody radiation source. The key 142 may also perform operations such as power on, power off, and controlling other parameters, and the other parameters are not limited.

While the present disclosure has been described with reference to a few embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure.

Claims

1. A black body radiation device is characterized by comprising a box body, a black body radiation source and a first display panel, wherein the box body comprises a first side plate, a through hole is formed in the first side plate, the black body radiation source is arranged on the inner surface of the first side plate, the black body radiation source covers the through hole and is exposed to the outer surface of the first side plate through the through hole, a first display panel is arranged on the outer surface of the first side plate, and the first display panel is used for displaying a first temperature of the black body radiation source;

2. The blackbody radiator of claim 1, comprising a first temperature measuring assembly disposed within the housing, the first temperature measuring assembly being electrically coupled to the first display panel, the first temperature measuring assembly being configured to measure a first temperature of the blackbody radiation source and transmit the first temperature of the blackbody radiation source to the first display panel for display.

3. The blackbody radiation device according to claim 1, further comprising a heating assembly disposed in the case and a heating power control assembly electrically connected to the heating assembly, wherein the heating assembly is configured to heat the blackbody radiation source according to a set temperature, so that the temperature of the blackbody radiation source is the set temperature, and the heating power control assembly is configured to control the power of the heating assembly.

4. The blackbody radiation apparatus according to claim 3, wherein the heating element is adjustable in power, the heating power control element outputs a first power control signal when the temperature of the blackbody radiation source is different from the set temperature by more than a predetermined value, the heating power control element outputs a second power control signal when the temperature of the blackbody radiation source is different from the set temperature by less than or equal to the predetermined value, the first power control signal controls the heating element to output a first heating power, the second power control signal controls the heating element to output a second heating power, and the first heating power is greater than the second heating power.

5. The blackbody radiator of claim 4, further comprising a temperature protection assembly electrically coupled to the heating assembly and the heating power control assembly, the temperature protection assembly configured to limit the temperature of the blackbody radiation source to within a predetermined range.

6. A blackbody radiator as set forth in claim 1, further comprising a second display panel disposed on an outer surface of the first side plate, the second display panel being for displaying an ambient temperature.

7. A blackbody radiator as claimed in claim 6, further comprising a second temperature measuring assembly electrically connected to the second display panel, the second temperature measuring assembly being adapted to measure ambient temperature and transmit the ambient temperature to the second display panel for display.

8. A black body radiator according to claim 6, further comprising an ambient light level detecting element for detecting the ambient light level of the environment in which said black body radiator is located.

9. A black body radiator according to claim 8, further comprising a brightness adjusting unit electrically connected to said first display panel, said second display panel and said ambient light brightness detecting unit, respectively, wherein said ambient light brightness detecting unit detects ambient light brightness of an environment in which said black body radiator is located and transmits the ambient light brightness to said brightness adjusting unit, and said brightness adjusting unit adjusts the display brightness of said first display panel and said second display panel according to the received ambient light brightness.

10. A black body radiating device according to claim 9, wherein said brightness adjusting means adjusts the display brightness of said first display panel and said second display panel to a natural brightness level when said ambient light brightness detecting means detects that the ambient light brightness is within a natural light brightness range; when the environment light brightness detection assembly detects that the environment light brightness is in a low light brightness range, the brightness adjusting assembly adjusts the display brightness of the first display panel and the second display panel to be a low brightness level; when the environment light brightness detection assembly detects that the environment light brightness is within a strong light brightness range, the brightness adjusting assembly adjusts the display brightness of the first display panel and the second display panel to be a high brightness level.

11. A face identification and temperature measurement system, characterized by comprising a temperature measurement device and the blackbody radiation device of any one of claims 1 to 10, wherein the blackbody radiation source and the first display panel of the blackbody radiation device are located at the same side of the temperature measurement device, the temperature measurement device measures the blackbody radiation source and obtains a measured temperature, the temperature measurement device identifies an image of the first display panel to obtain a first temperature of the blackbody radiation source, and calibration of the temperature measurement device is realized by calculating a difference between the measured temperature and the first temperature.

12. The system of claim 11, wherein the temperature measuring device comprises a camera module and an identification module, the camera module captures the display image of the first display panel, and the identification module identifies the display image of the first display panel to obtain the first temperature of the blackbody radiation source.

13. The face recognition and temperature measurement system of claim 12, wherein the temperature measurement device further comprises a temperature measurement component for obtaining the measured temperature of the blackbody radiation source by receiving the infrared radiation of the blackbody radiation source; the temperature measuring component obtains the forehead temperature of the human body by receiving the infrared radiation of the human body and converts the forehead temperature into the body temperature.