Temperature measurement system and temperature measurement method for a temperature measurement system

Abstract

The application discloses a temperature measuring system and a temperature measuring method of the temperature measuring system. The temperature measuring system comprises a first temperature measuring device, a first camera module and a body temperature calibration module used for calibrating the first camera module. The first temperature measuring device is used for acquiring a first calibrated body temperature of a person passing through the first temperature measuring device. The second camera module is used for acquiring a measured temperature of a person passing through the second camera module. The correction module calibrates the measured temperature of the person passing through the second camera module according to the first calibrated body temperature and the measured temperature of a calibration person sequentially passing through the first temperature measuring device and the second camera module. The temperature measuring system according to the application can calibrate the measured temperatures of multiple camera modules by using a single body temperature calibration module, thereby greatly reducing the cost of the temperature measuring system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature measurement, in particular to a temperature measurement system and a temperature measurement method thereof. BACKGROUND

[0002] Due to the epidemic, it is necessary to set up temperature measurement points at entrances and exits of various places and equip them with temperature measurement equipment or systems to measure the body temperature of people coming and going to check for people with abnormal body temperature, so as to provide conditions for good and effective epidemic prevention work. In areas with high human flow, such as train stations, airports, subways, community and company entrances, etc., due to the large number of people and complex environmental conditions, it is often necessary to equip the site with a calibration device black body to calibrate the temperature measurement equipment, so that the measurement results of the temperature measurement system are accurate, meeting the temperature measurement requirements and checking purposes. However, in the existing temperature measurement system, the black body is priced at about 20000 or so, and each temperature measurement equipment needs to be equipped with one, and multiple temperature measurement equipment needs multiple black bodies, which makes the cost of the temperature measurement system high. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a temperature measurement system which can calibrate the measurement temperature of multiple temperature measurement equipment, thereby greatly reducing the cost of the temperature measurement system.

[0004] The present application also proposes a temperature measurement method of a temperature measurement system.

[0005] The temperature measurement system according to the first aspect of the present application comprises: a first temperature measurement device, the first temperature measurement device comprising a first camera module and a body temperature calibration module for calibrating the first camera module, the first temperature measurement device being configured to obtain a first calibrated body temperature of a person passing through the first temperature measurement device; a second camera module, the second camera module being configured to obtain a measurement temperature of a person passing through the second camera module; a correction module, the correction module being configured to obtain a second calibrated body temperature of a person passing through the second camera module according to the first calibrated body temperature and the measurement temperature of a calibration person, the calibration person being a person who passes through the first temperature measurement device and the second camera module in sequence.

[0006] According to the temperature measurement system, the first temperature measurement device is arranged, the first temperature measurement device is used to measure the first body temperature of the personnel passing through the first temperature measurement device, and the first calibrated body temperature is obtained by calibrating the measured first body temperature by using the body temperature calibration module; after the personnel pass through the first temperature measurement device, the second camera module measures the measurement temperature of the personnel passing through the second camera module, and the calibration module obtains the temperature measurement error of the second camera module by comparing and calculating the first calibrated body temperature of the calibration personnel and the measurement temperature measured by the second camera module, and then processes the temperature measurement error and the measurement temperature of other personnel passing through the second camera module, so as to obtain the second calibrated body temperature. In this way, when the temperature of other personnel passing through the second camera module is measured, the body temperature calibration module does not need to be arranged for temperature calibration, so that the number of body temperature calibration modules used in the temperature measurement system is greatly reduced, the cost and price of the temperature measurement system are reduced, and the temperature measurement system is convenient to use.

[0007] In addition, the temperature measurement system also includes the following additional technical features:

[0008] In some embodiments of the application, the temperature measurement system further comprises a screening module, which is used to screen the calibration personnel passing through the first temperature measurement device and the second camera module in sequence. In this way, the personnel passing through the first temperature measurement device for temperature measurement and the personnel not passing through the first temperature measurement device for temperature measurement can be distinguished at the second camera module, and subsequent correction and data processing are facilitated.

[0009] In one embodiment of the application, the first camera module is used to obtain the first image of the personnel passing through the first camera module, the second camera module is used to obtain the second image of the personnel passing through the second camera module, and the screening module includes a screening unit, which screens the personnel with consistent identity features according to the first image and the second image. In this way, the images of the personnel at the first camera module and the second camera module can be conveniently obtained, and the personnel with consistent identity features can be screened by image processing and analysis, which is simple and fast.

[0010] In some examples of the application, the identity features include face features and / or clothing features. By face recognition and clothing recognition, the screening efficiency and accuracy of the screening unit can be improved, so that the personnel passing through the first camera module and the second camera module can be conveniently tracked and screened.

[0011] In one embodiment of the present application, the screening module further comprises a judging unit configured to judge whether the interval between the first image and the second image of the person with the same identity features is less than a preset time, and if so, determine that the person with the same identity features is a calibration person. In this way, the first calibration body temperature of the person at the first temperature measuring device cannot reflect the actual temperature of the person when the interval between the first temperature measuring device and the second camera module is too long and the body temperature of the person changes too much, so that the error is too large when the first calibration body temperature is used to calibrate the measured temperature of other persons passing through the second camera module, thereby ensuring the accuracy of the temperature measuring system in measuring the body temperature of the person at the second camera module.

[0012] In some embodiments of the present application, the correction module comprises a calculation unit configured to derive the temperature measuring error of the second camera module according to the first calibration body temperature and the measured temperature of the calibration person, and a correction unit configured to correct the measured temperature according to the temperature measuring error to obtain a corrected temperature. In this way, the temperature measuring error of the second camera module can be obtained, and the measured temperature of the person at the second camera module can be corrected, thereby improving the accuracy of the temperature measuring system in measuring the body temperature.

[0013] In one embodiment of the present application, when the calibration person is multiple, the temperature measuring error is the average value of the difference between the first calibration body temperature and the measured temperature of the multiple calibration persons. In this way, the average value is used instead of multiple values, so that the obtained temperature measuring error is more accurate and convenient for subsequent calibration calculation of the measured body temperature of the person.

[0014] In some embodiments of the present application, the first camera module and the second camera module are both infrared cameras. In this way, the person can be measured by non-contact temperature measurement, which is convenient to use, has wide adaptability and stable work.

[0015] The temperature measuring method of the temperature measuring system according to the second aspect of the present application, the temperature measuring system comprising a first temperature measuring device, the first temperature measuring device comprising a first camera module and a body temperature calibration module for calibrating the first camera module, the temperature measuring system further comprising a second camera module, the temperature measuring method comprising: obtaining the first calibration body temperature of the person passing through the first temperature measuring device; obtaining the measured temperature of the person passing through the second camera module; deriving the measured temperature of the person passing through the second camera module according to the first calibration body temperature and the measured temperature of the calibration person, the calibration person being the person passing through the first temperature measuring device and the second camera module in turn.

[0016] The temperature measuring method of the temperature measuring system according to the present application, by first obtaining the calibration body temperature of the personnel passing through the first temperature measuring device, and then using the temperature measured by the second camera module to calibrate the measured temperature of the other personnel passing through the second camera module, so as to obtain the second calibration body temperature, so that at the second camera module, the calibration work is performed by the personnel passing through the first camera module, and the temperature calibration is not required to be performed by the body temperature calibration module, thereby greatly reducing the number of body temperature calibration modules used in the temperature measuring system, reducing the cost and price of the temperature measuring system, and facilitating popularization and use.

[0017] The temperature measuring method according to the present application also has the following additional technical features:

[0018] In some embodiments of the present application, the temperature measuring method further comprises: obtaining a first image of the personnel passing through the first camera module; obtaining a second image of the personnel passing through the second camera module; and screening the calibration personnel passing through the first temperature measuring device and the second camera module in sequence according to the first image and the second image. In this way, the personnel passing through the first camera module and the second camera module can be conveniently tracked and screened.

[0019] In some embodiments of the present application, the calibration of the measured temperature of the personnel passing through the second camera module according to the first calibration body temperature and the measured temperature of the calibration personnel passing through the first temperature measuring device and the second camera module in sequence comprises: obtaining the temperature measuring error of the second camera module according to the first calibration body temperature and the measured temperature of the calibration personnel; and correcting the measured temperature according to the temperature measuring error to obtain a corrected temperature. In this way, the second calibration body temperature of the personnel passing through the second camera module can be obtained, and the accuracy of the temperature measurement of the temperature measuring system is improved.

[0020] Additional aspects and advantages of the present application will be partially given in the following description, partially will become apparent from the following description, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of a temperature measuring system according to an embodiment of the present application;

[0022] Figure 2 is a flowchart of a temperature measuring method of a temperature measuring system according to an embodiment of the present application;

[0023] Figure 3 is another flowchart of a temperature measuring method of a temperature measuring system according to an embodiment of the present application;

[0024] Figure 4 is a general flowchart of a temperature measuring method of a temperature measuring system according to an embodiment of the present application;

[0025] Figure 5 This is a flowchart of a temperature measurement system according to an embodiment of the present invention.

[0026] Figure label:

[0027] 10. First temperature measuring device; 11. First camera module; 12. Body temperature calibration module; 20. Second camera module; 30. Screening module; 31. Screening unit; 32. Judgment unit; 40. Calibration module; 41. Calculation unit; 42. Calibration unit;

[0028] 100. Temperature measurement system; 101. Primary channel; 102. Secondary channel. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following is for reference. Figure 1 A temperature measurement system according to an embodiment of the first aspect of the present invention is described. The temperature measurement system of the present invention is used to measure the body temperature of a person.

[0031] like Figure 1 As shown, a temperature measurement system 100 according to a first aspect embodiment of the present invention includes: a first temperature measuring device 10, a second camera module 20, and a calibration module 40.

[0032] Specifically, the first temperature measuring device 10 includes a first camera module 11 and a body temperature calibration module 12 for calibrating the first camera module 11. The first temperature measuring device 10 is used to acquire the first calibrated body temperature of a person passing through it. The first camera module 11 measures the first body temperature of the person passing through it, and the body temperature calibration module 12 calibrates the measured first body temperature to obtain the person's first calibrated body temperature. It should be noted that the first calibrated body temperature refers to the temperature value after calibrating the person's body temperature measured by the first camera module 11 using the body temperature calibration module 12. The first calibrated body temperature more accurately reflects the actual body temperature of the person whose temperature was measured. Optionally, the body temperature calibration module can be a blackbody module.

[0033] The second camera module 20 is used to obtain a measured temperature of a person passing through the second camera module 20; and the correction module 40 obtains a second calibrated body temperature of the person passing through the second camera module according to the first calibration body temperature of the calibration person and the measured temperature, wherein the calibration person is a person passing through the first temperature measuring device 10 and the second camera module 20 in sequence. It can be understood that the calibration person is a person passing through the first camera module 11 to obtain the first calibration body temperature and then passing through the second camera module 20 to obtain the body temperature. The calibration person obtains the first calibration body temperature when passing through the first temperature measuring device 10. When passing through the second camera module 20, the second camera module 20 measures the body temperature again, compares and processes the obtained measured temperature with the first calibration body temperature, so as to obtain the temperature measurement error of the second camera module 20. When other persons pass through the second camera module 20, the measured temperature of the person and the temperature measurement error are calculated and processed, so as to correct the measured temperature, and obtain the second calibration body temperature of the person passing through the second camera module 20.

[0034] For example, there are a person A and a person B. The person A passes through the first temperature measuring device 10 to obtain the first calibration body temperature TA, and then passes through the second camera module 20 to obtain the measured temperature TA1. Then the temperature measurement error Offset_1 of the second camera module 20 is TA-TA1. When the person B passes through the second camera module 20, the measured temperature TB1 is obtained. Then the second calibration body temperature TB of the person B is TB1+Offset_1.

[0035] According to the temperature measuring system 100 of the embodiment, the first temperature measuring device 10 is arranged, the first camera module 11 is used to measure the first body temperature of a person passing through the first temperature measuring device 10, and the first calibration body temperature is obtained by calibrating the measured first body temperature by using the body temperature calibration module 12. After the person passes through the first temperature measuring device 10, the second camera module 20 measures the measured temperature of the person when passing through the second camera module 20. At the same time, the correction module 40 compares and calculates the first calibration body temperature of the calibration person with the measured temperature measured by the second camera module 20 to obtain the temperature measurement error of the second camera module 20, and then processes the temperature measurement error and the measured temperature of other persons passing through the second camera module 20, so as to obtain the second calibration body temperature. In this way, when measuring the temperature of other persons passing through only the second camera module 20, it is not necessary to arrange the body temperature calibration module 12 to calibrate the temperature, so that the number of the body temperature calibration module 12 used in the temperature measuring system 100 is greatly reduced, the cost and price of the temperature measuring system 100 are reduced, and the use is facilitated.

[0036] In some embodiments of the present application, as Figure 1As shown, in the areas with large flow of people such as train stations, airports, office buildings, etc., multiple access channels are often provided, and the temperature measuring device can be arranged at the access channels. The multiple access channels can include a first access channel 101 and a second access channel 102. In the direction of the flow of people entering the train station, airport, etc., the second access channel 102 is downstream of the first access channel 101, and the people generally pass through the first access channel 101 and then pass through the second access channel 102 to enter the place. The channel where the first temperature measuring device 10 is located can be the first access channel 101 through which the people pass, and the channel where the second camera module 20 is located can be the second access channel 102 through which the people pass. Among the people passing through the second access channel 102, there can be people passing through the first access channel 101. In this way, the temperature measuring system 100 can measure the temperature of the people passing through the first access channel 101 and the second access channel 102. For example, the first temperature measuring device 10 can be arranged in the entrance channel or at the position of the gate opening, and the second camera module 20 can be arranged in the entrance channel or at the position of the gate opening. Thus, at the second access channel 102, the second camera module 20 can calibrate other people in the second access channel 102 using the people from the first access channel 101, without the need to arrange a body temperature calibration module 12 at the second access channel 102, thereby reducing the cost and price of the temperature measuring system 100 and facilitating popularization and use.

[0037] In some embodiments of the present application, the temperature measuring system 100 can include multiple first temperature measuring devices 10 and multiple second camera modules 20. The number of second camera modules 20 can be greater than the number of first temperature measuring devices 10. For example, the first temperature measuring device 10 can be two, three, or four, and the second camera module 20 can be five, six, seven, eight, or ten, etc. When the temperature measuring device of the present embodiment is applied to a place with large flow of people, as long as a smaller number of first temperature measuring devices 10 with a body temperature calibration module 12 (such as a black body module) are arranged in the upstream direction of the flow of people, and the second camera module 20 is arranged in the downstream direction of the flow of people, the calibration of the second camera module 20 can be realized by the calibration personnel sequentially passing through the first temperature measuring device 10 and the second camera module 20, thereby greatly reducing the cost of the temperature measuring system 100.

[0038] In one embodiment of the present application, as shown in Figure 1 When the area with large flow of people is provided with multiple second access channels 102, the second camera module 20 can include multiple second camera modules 20, and each second access channel 102 is provided with a second camera module 20. In this way, the temperature measuring coverage and efficiency of the temperature measuring system 100 can be increased, and the situation of multiple entrances and exits in actual application can be adapted. For example, three second camera modules 20 can be provided, and each second camera module 20 is arranged at a different second access channel 102.

[0039] In some embodiments of the present application, as shown in Figure 1 The temperature measurement system 100 can further include a screening module 30 for screening the calibration personnel sequentially passing through the first temperature measurement device 10 and the second camera module 20. In this way, at the second camera module 20, the personnel passing through the first temperature measurement device 10 can be distinguished from the personnel not passing through the first temperature measurement device 10, facilitating subsequent correction and data processing. For example, the screening module 30 can perform personnel confirmation and screening according to the height characteristics or face characteristics of the personnel, etc.

[0040] It can be understood that when there is no personnel from the primary channel 101 in the secondary channel 102, the second camera module 20 cannot detect the body temperature of the calibration personnel, and thus cannot perform calibration of the temperature measurement of the second camera module 20. Therefore, measures should be taken to reduce the detection of such a situation. For example, personnel can be guided to pass through the front primary channel 101 as much as possible, ensuring that there is personnel in the primary channel 101. A partition can be provided at the exit of the primary channel 101 to disperse their destinations as much as possible to different secondary channels 102. A simple gate can also be provided at the entrance of the secondary channel 102, which is temporarily closed when there is no personnel from the primary channel 101, etc.

[0041] In an embodiment of the present application, as shown in Figure 1 The first camera module 11 can be used to obtain a first image of the personnel passing through the first camera module 11, the second camera module 20 can be used to obtain a second image of the personnel passing through the second camera module 20, and the screening module 30 can include a screening unit 31 for screening personnel with consistent identity characteristics according to the first image and the second image. The calibration personnel are the personnel with consistent identity characteristics screened according to the first image and the second image. In this way, the images of the personnel at the first camera module 11 and the second camera module 20 can be conveniently obtained, and the personnel with consistent identity characteristics can be screened through image processing and analysis, which is simple and fast. For example, a camera can be provided in the first camera module 11, and a camera can be provided in the second camera module 20. The obtained images can be directly transmitted to the screening unit 31. It should be noted that the body temperature of different personnel is also different, and the body temperature of the same personnel is the same within a certain period of time. Therefore, personnel with consistent identity characteristics need to be screened, so that the first calibration body temperature measured by the personnel passing through the first temperature measurement device 10 can be used as a reference to compare and calibrate the measured temperature of the personnel passing through the second camera module 20, thereby ensuring the accuracy of the calibrated measured temperature.

[0042] In some examples of the present application, as shown in Figure 1As shown, the identity feature can include a facial feature and / or a clothing feature. Specifically, the facial feature can be used as the identity feature, the clothing feature can be used as the identity feature, or the facial feature and the clothing feature can be used together as the identity feature. Through face recognition and clothing recognition, the screening efficiency and accuracy of the screening unit 31 can be improved, so that the personnel passing through the first camera module 11 and the second camera module 20 can be conveniently tracked and screened.

[0043] For example, a camera with RGB (R represents red, G represents green, and B represents blue) can be used for cross-lens tracking, a ReID (Re-identification, cross-lens tracking) technology can be used to identify a person's posture or clothing, or when the face is clear, the face feature can be used for matching; at the first channel 101, the first camera module 11 captures an image, then frames the human body and / or the face, analyzes the framed content and enters the feature library, and establishes the ID of the calibrated personnel; at the second channel 102, the second camera module 20 captures an image, detects and obtains a face / clothing feature, and compares it with the ID in the feature library to recheck and confirm the identity of the personnel.

[0044] In some embodiments of the present application, as shown in Figure 1 As shown, the screening module 30 can further include a determination unit 32, which is configured to determine whether the shooting interval time of the first image and the second image of the personnel with consistent identity features is less than a preset time, and if the shooting interval time is less than the preset time, the personnel with consistent identity features is determined as the calibrated personnel. It should be noted that the body temperature of a human body changes relatively little within tens of seconds and can be regarded as a constant temperature. When the shooting time interval of the first image and the second image is too long, the body temperature changes too much, and the first calibrated body temperature measured at the first temperature measuring device 10 cannot reflect the actual temperature of the human body when passing through the second camera module 20. At this time, the error is too large when using the first calibrated body temperature to calibrate and measure the temperature of other personnel passing through the second camera module 20. The present embodiment can ensure the accuracy of the temperature measuring system 100 in measuring the body temperature of personnel at the second camera module 20 by determining that the shooting interval time of the first image and the second image is less than the preset time.

[0045] In an embodiment of the present application, the preset time is not greater than 100s. That is, the shooting interval of the first image and the second image is limited to 100s or less, so as to ensure the accuracy of the temperature measuring system 100 in measuring the body temperature of personnel at the second camera module 20. For example, the preset time can be set to 80s, 50s, 20s, etc., which can be reasonably set according to actual needs.

[0046] In some embodiments of the present application, as shown in Figure 1As shown, the correction module 40 can include a calculation unit 41, which calculates the temperature measurement error of the second camera module 20 according to the first calibration body temperature and the measured temperature of the calibration personnel. Thus, the temperature measurement error of the second camera module 20 can be obtained, which facilitates the correction of the measured temperature of the personnel at the second camera module 20 and improves the accuracy of the temperature measurement system 100.

[0047] In some embodiments of the present application, as shown in Figure 1 As shown, the correction module 40 can further include a correction unit 42, which corrects the measured temperature according to the temperature measurement error to obtain a corrected temperature. Thus, the second calibration body temperature of the personnel at the second camera module 20 can be obtained, which improves the accuracy of the temperature measurement system 100.

[0048] In an embodiment of the present application, when the selected calibration personnel is multiple, the temperature measurement error is the average of the differences between the first calibration body temperature and the measured temperature of the multiple calibration personnel. Thus, the average value is used instead of multiple values, which makes the obtained temperature measurement error more accurate and facilitates the subsequent calibration calculation of the measured body temperature of the personnel.

[0049] For example, the body temperatures of three personnel are measured at the first temperature measurement device 10, which are personnel A, personnel B and personnel C. After correction by the body temperature calibration module 12, the first calibration body temperatures are TA, TB and TC, respectively. Later, two calibration personnel A and B and a personnel S who has not passed through the first temperature measurement device 10 are selected at the second camera module 20. The measured temperatures of the personnel A and the personnel B are TA1 and TB1, respectively, and the measured temperature of the personnel S is TS1. The temperature measurement error Offset_1 of the second camera module 20 satisfies: Offset_1 = ((TA-TA1)+(TB-TB1)) / 2. Then, the calibration body temperature TS of the personnel S is obtained by the following calculation: TS = Offset_1 + TS1.

[0050] It can be understood that when multiple calibration personnel are selected, the calculation of the temperature measurement error is not limited to the average value algorithm, but can also be other calculation methods, such as median calculation of the temperature measurement error.

[0051] In some embodiments of the present application, as shown in Figure 1 As shown, the first camera module 11 and the second camera module 20 can both be infrared cameras. Thus, the personnel can be measured by non-contact temperature measurement, which is convenient to use, has wide adaptability and stable work. For example, the first camera module 11 can be an infrared temperature measurement instrument, and the second camera module 20 can be an infrared temperature measurement instrument.

[0052] The temperature measurement method of the temperature measurement system 100 according to the second aspect of the present application will be described below with reference to Figure 2 - Figure 5 the temperature measurement method of the temperature measurement system 100 according to the second aspect of the present application will be described below with reference to

[0053] like Figure 2 - Figure 5 As shown, the temperature measurement system 100 according to the invention includes a first temperature measuring device 10, which includes a first camera module 11 and a body temperature calibration module 12 for calibrating the first camera module 11. The temperature measurement system 100 also includes a second camera module 20, and the temperature measurement method includes:

[0054] The first calibrated body temperature of the person passing through the first temperature measuring device 10 is obtained. That is, at the beginning of the temperature measurement method in this embodiment, the body temperature of the person passing through the first temperature measuring device 10 is first measured to obtain the first calibrated body temperature. For example, the first camera module 11 can be used to measure the person's first body temperature, and the first camera module 11 can also measure the temperature of the temperature calibration module 12. The measured temperature of the temperature calibration module 12 is compared and processed with the set temperature of the temperature calibration module 12 to obtain the temperature measurement error of the first camera module 11. Then, the first body temperature measured by the person and the temperature measurement error are processed to obtain the person's first calibrated body temperature. It is understood that the temperature value of the temperature calibration module 12 is constant and can be manually set.

[0055] The second camera module 20 is used to measure the body temperature of the person passing through it.

[0056] The measured temperature of the person passing through the second camera module 20 is obtained based on the first calibrated body temperature and the measured temperature of the calibrated personnel. The calibrated personnel are those who pass through the first temperature measuring device 10 and the second camera module 20 in sequence. That is, the body temperature of the person passing through the second camera module 20 is measured using the second camera module 20, and the body temperature of the calibrated personnel passing through the second camera module 20 is measured. The body temperature of the calibrated personnel measured by the second camera module 20 is compared and processed with the first calibrated body temperature obtained by the person in the first camera module 11 to obtain the temperature measurement error of the second camera module 20. Then, the body temperature measured by the person passing through the second camera module 20 and the temperature measurement error are processed to obtain the second calibrated body temperature of the person. It is understandable that the calibration personnel first pass through the first camera module 11 to obtain the first calibrated body temperature, and then pass through the second camera module 20 to have their body temperature measured. When the calibration personnel pass through the first temperature measuring device 10, the first calibrated body temperature is obtained. When they pass through the second camera module 20, the second camera module 20 measures their body temperature again. The obtained measured temperature is compared and processed with the first calibrated body temperature to obtain the temperature measurement error of the second camera module 20. When other personnel pass through the second camera module 20, the measured temperature and temperature measurement error of the personnel are calculated and processed to correct the measured temperature, so as to obtain the second calibrated body temperature of the personnel when they pass through the second camera module 20.

[0057] The temperature measuring method of the temperature measuring system 100 according to the present application, by first obtaining the calibration body temperature of the personnel passing through the first temperature measuring device 10, and then using the temperature measured at the second camera module 20 to calibrate the measured temperature of other personnel passing through the second camera module 20, to obtain the second calibration body temperature, so that at the second camera module 20, the calibration work is performed by the personnel passing through the first camera module 11, and the temperature calibration is not required to be performed by the body temperature calibration module 12, thereby greatly reducing the number of the body temperature calibration module 12 in the temperature measuring system 100, reducing the cost and price of the temperature measuring system 100, and facilitating popularization and use.

[0058] In some embodiments of the present application, as shown in Figure 2 - Figure 5 The temperature measuring method can further include:

[0059] The first image of the personnel passing through the first camera module 11 is obtained. Further, the identity features of the personnel in the first image are obtained by image analysis and processing of the first image, and the identity features are stored and transmitted to the screening module 30.

[0060] The second image of the personnel passing through the second camera module 20 is obtained. Further, the identity features of the personnel in the second image are obtained by image analysis and processing of the second image, and the identity features are stored and transmitted to the screening module 30.

[0061] The calibration personnel sequentially passing through the first temperature measuring device 10 and the second camera module 20 are screened according to the first image and the second image. That is, the personnel passing through the second camera module 20 are screened by using the screening module 30, and the identity features of the personnel appearing in the second image are compared with the identity features of the personnel appearing in the first image, to track the calibration personnel passing through the second camera module 20.

[0062] In some embodiments of the present application, as shown in Figure 2 - Figure 5 The temperature measuring method can further include:

[0063] The calibration personnel within a preset time 100s are screened according to the time interval of the first image and the second image. Since the body temperature change of the human body is relatively small within tens of seconds and can be regarded as a constant temperature, when the time interval of the first image and the second image is too long, the body temperature change of the human body is too large, and the first calibration body temperature measured at the first temperature measuring device 10 cannot be reflected in the actual temperature of the human body passing through the second camera module 20, and when the first calibration body temperature is used to calibrate the measured temperature of other personnel passing through the second camera module 20, the error is too large. Therefore, by determining that the shooting interval time of the first image and the second image is less than the preset time, the accuracy of the temperature measurement of the personnel at the second camera module 20 by the temperature measuring system 100 can be ensured.

[0064] In some embodiments of the present application, as shown in Figure 2 - Figure 5 The measured temperature of the person passing through the second camera module 20 is calibrated according to the first calibration body temperature and the measured temperature of the calibration person sequentially passing through the first temperature measuring device 10 and the second camera module 20, including:

[0065] The temperature measuring error of the second camera module 20 is derived according to the first calibration body temperature and the measured temperature of the calibration person. That is, the body temperature of the person passing through the second camera module 20 is measured using the second camera module 20, the measured temperature of the calibration person passing through the second camera module 20 is measured, the measured temperature of the calibration person measured by the second camera module 20 is compared with the first calibration body temperature obtained by the first camera module 11, and the temperature measuring error of the second camera module 20 is derived by processing, and then the measured temperature of the person measured only by the second camera module 20 is processed with the temperature measuring error to obtain the second calibration body temperature of the person.

[0066] The measured temperature is corrected according to the temperature measuring error to derive the corrected temperature. That is, the measured temperature is calculated and processed with the temperature measuring error to obtain the second calibration body temperature of the person measured when passing through the second camera module 20, so that the body temperature measurement of the person is more accurate.

[0067] In some embodiments of the present application, as shown in Figure 2 - Figure 5 The temperature measuring method can further include: when the screened calibration person is multiple, taking the average value as the first calibration body temperature of the calibration person to derive the temperature measuring error. Thus, the average value is used instead of multiple values, so that the derived temperature measuring error is more accurate, and it is convenient for subsequent calibration calculation when measuring the body temperature of the person.

[0068] The temperature measuring system 100 according to one specific embodiment of the present application will be described below with reference to Figure 1 and Figure 5

[0069] As shown in Figure 1 ​As shown, the temperature measurement system 100 comprises a first temperature measurement device 10, a second camera module 20, a correction module 40 and a screening module 30. The first temperature measurement device 10 comprises a first camera module 11 and a body temperature calibration module 12, the first camera module 11 is used to measure the body temperature of a person and obtain a first image of the person passing through the first camera module 11, and the body temperature calibration module 12 is used to calibrate the body temperature of the person passing through the first camera module 11 to obtain a first calibrated body temperature, and the body temperature calibration module 12 is a black body module. The second camera module 20 is used to measure the body temperature of a person and obtain a second image of the person passing through the second camera module 20. The correction module 40 comprises a calculation unit 41 and a correction unit 42, the calculation unit 41 is used to obtain a temperature measurement error of the second camera module 20, and the correction unit 42 is used to correct the body temperature of the person measured by the second camera module 20 according to the temperature measurement error to obtain a corrected temperature of the person passing through the second camera module 20. The screening module 30 comprises a screening unit 31 and a determination unit 32, the screening unit 31 is used to screen the person in the first image and the second image to obtain a person with consistent identity features in the first image and the second image, and the determination unit 32 is used to determine whether the shooting interval of the first image and the second image is less than a preset time, and determine the person with consistent identity features in the first image and the second image as a calibration person when the first image and the second image meet the preset time.

[0070] The temperature measurement method of the temperature measurement system 100 according to the above-mentioned embodiments of the present application is described below.

[0071] The temperature measurement method of the temperature measurement system 100 according to the above-mentioned embodiments of the present application is described below.

[0072] When the temperature measurement system 100 measures temperature, the first temperature measurement device 10 at the first channel 101 uses the first camera module 11 to measure the temperature of the person walking in the first channel 101 to obtain the first temperature, and uses the temperature calibration module 12 to correct the first temperature to obtain the first calibrated temperature of the person, so as to obtain the first calibrated temperature of the person walking through the first temperature measurement device 10, at this time, the first calibrated temperature of the person is the final temperature measured by the temperature measurement system 100 on the person; the first image is shot, the identity features such as the face, clothes and posture of the person in the image are recognized and are given a temporary ID, and then the first calibrated temperature of the person, the shooting time of the first image and the identity features are stored; the second camera module 20 at the second channel 102 measures the temperature of the person walking in the second channel 102 to obtain the measured temperature of the person, and shoots the second image, and recognizes the identity features such as the face, clothes and posture of the person in the image; then the screening module 30 compares the identity features with the stored identity features of the person, and screens the calibration person walking through the first temperature measurement device 10 and the second camera module 20 in turn, and judges whether the shooting interval of the second image and the first image is within the preset time, and if the shooting interval of the second image and the first image is within the preset time, the person is regarded as an effective calibration person, and the calibration module 40 calculates and processes the first calibrated temperature of the calibration person and the measured temperature to obtain the temperature measurement error of the second camera module 20; in the screening process of the screening module 30, when the identity features are inconsistent with the stored identity features of the person, the person does not pass through the first temperature measurement device 10, at this time, the calibration module 40 processes the measured temperature of the person measured by the second camera module 20 and the temperature measurement error of the second camera module 20 to correct the measured temperature, so as to obtain the second calibrated temperature of the person, and the second calibrated temperature is the final temperature measured by the temperature measurement system 100 on the person.

[0073] According to the temperature measurement method of the temperature measurement system 100, the first calibrated temperature of the person walking through the first temperature measurement device 10 is obtained first, and then the measured temperature of other persons walking through the second camera module 20 is calibrated to obtain the second calibrated temperature, so that at the second camera module 20, the calibration work is performed by the person walking through the first camera module 11, and the temperature calibration module 12 is not needed to perform temperature calibration, so that the number of temperature calibration modules 12 used in the temperature measurement system 100 is greatly reduced, the cost and price of the temperature measurement system 100 are reduced, and the temperature measurement system 100 is convenient to use.

[0074] In the description of the application, it should be understood that the orientation or positional relationship indicated by terms such as "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0075] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0076] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, or the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0077] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0078] Although embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A temperature measurement system, characterized in that, include: A first temperature measuring device, comprising a first camera module and a body temperature calibration module for calibrating the first camera module, wherein the first temperature measuring device is used to acquire a first calibrated body temperature of a person passing through the first temperature measuring device; The second camera module is used to acquire the measured temperature of a person passing through the second camera module; The calibration module obtains the second calibration body temperature of the person passing through the second camera module based on the first calibration body temperature and the measured temperature of the calibrated person. The calibrated person is the person who passes through the first temperature measuring device and the second camera module in sequence.

2. The temperature measurement system according to claim 1, characterized in that, Also includes: A screening module is used to screen out the designated personnel who pass through the first temperature measuring device and the second camera module in sequence.

3. The temperature measurement system according to claim 2, characterized in that, The first camera module is used to acquire a first image of a person passing through the first camera module, and the second camera module is used to acquire a second image of a person passing through the second camera module. The filtering module includes a filtering unit, which filters people with consistent identity characteristics based on the first image and the second image.

4. The temperature measurement system according to claim 3, characterized in that, The identity features include facial features and / or clothing features.

5. The temperature measurement system according to claim 3, characterized in that, The screening module further includes a determination unit, which is used to determine whether the shooting interval between the first image and the second image of the person with consistent identity characteristics is less than a preset time. If it is less than the preset time, the person with consistent identity characteristics is determined to be the designated person.

6. The temperature measuring system according to any one of claims 1-5, characterized in that, The correction module includes: A calculation unit that calculates the temperature measurement error of the second camera module based on the first calibrated body temperature of the calibrated personnel and the measured temperature; A calibration unit corrects the measured temperature based on the temperature measurement error to obtain a corrected temperature.

7. The temperature measurement system according to claim 6, characterized in that, When there are multiple calibrators selected, the temperature measurement error is the average of the difference between the first calibrated body temperature and the measured temperature of the multiple calibrators.

8. The temperature measuring system according to any one of claims 1-5, characterized in that, Both the first camera module and the second camera module are infrared cameras.

9. A temperature measurement method for a temperature measurement system, characterized in that, The temperature measurement system includes a first temperature measuring device, the first temperature measuring device including a first camera module and a body temperature calibration module for calibrating the first camera module, the temperature measurement system further including a second camera module, and the temperature measurement method including: Obtain the first calibrated body temperature of the person passing through the first temperature measuring device; Acquire the measured temperature of the person passing through the second camera module; The measured temperature of the person passing through the second camera module is obtained based on the first calibrated body temperature and measured temperature of the calibrated personnel. The calibrated personnel are those who pass through the first temperature measuring device and the second camera module in sequence.

10. The temperature measurement method of the temperature measurement system according to claim 9, characterized in that, Also includes: Acquire a first image of a person passing through the first camera module; Acquire a second image of the person passing through the second camera module; Based on the first image and the second image, the calibrated personnel who pass through the first temperature measuring device and the second camera module in sequence are selected.

11. The temperature measurement method of the temperature measurement system according to claim 10, characterized in that, The step of calibrating the measured temperature of a person passing through the second camera module based on the first calibrated body temperature and measured temperature of the calibrated person passing through the first temperature measuring device and the second camera module in sequence includes: The temperature measurement error of the second camera module is derived based on the first calibrated body temperature of the calibrated personnel and the measured temperature. The measured temperature is corrected based on the temperature measurement error to obtain the corrected temperature.

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