CN110567582A - Device and method for measuring body temperature - Google Patents

Abstract

The present application discloses a body temperature measuring device and method. The measurement device includes: a visible light camera configured to capture a visible light image of the subject's face; a thermal imaging device configured to capture an infrared thermal image of the subject's face and capable of reading a temperature from the infrared thermal image; and a processor, Configured to: acquire a visible light image from a visible light camera device and acquire an infrared thermal image from a thermal imaging device, and determine a temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image; and send the determined temperature distribution area of the temporal artery to the thermal imaging device , wherein the thermal imaging device reads the temperature of the temporal artery from the infrared thermal image according to the determined temperature distribution area of the temporal artery; and receives the read temperature of the temporal artery from the thermal imaging device, and according to the read temperature of the temporal artery Calculate the body temperature of the subject.

Description

Device and method for measuring body temperature

technical field

The present application relates to a body temperature measuring device and method, and more particularly, to a body temperature measuring device and method utilizing infrared thermal imaging.

Background technique

Body temperature is one of the four important vital signs of the human body, and its measurement is a common means of rapid health diagnosis. There are currently two mainstream implementation methods, the first is to use a traditional contact thermometer, and the second is to use a hand-held infrared forehead thermometer.

The first method uses the temperature measurement principle of contact heat balance. This method has slow measurement results, children have resistance during the measurement process, and there is a risk of human cross-infection during the measurement process. The second way is through the principle of single-point infrared thermal induction, the operator holds the device to the forehead of the person to be tested for a certain period of time, and then the reading can be completed. The disadvantage of this method is that the accuracy of the test is highly dependent on the ability of the operator, and it is impossible to accurately and quickly measure and identify the highest temperature position on the forehead of the person. During the measurement process, there may be a possibility of missing part of the detection of fever.

Therefore, how to make body temperature measurement more convenient, accurate, and intelligent is a common topic to be studied and solved in the industry.

Contents of the invention

The technical solutions provided by this application at least partly solve the technical problems described above.

According to one aspect of the present application, a body temperature measurement device is provided, comprising:

a visible light camera device configured to capture a visible light image of the subject's face;

a thermal imaging device configured to capture an infrared thermal image of the subject's face and capable of reading a temperature from said infrared thermal image; and

processor, configured with:

acquiring the visible light image from the visible light imaging device and the infrared thermal image from the thermal imaging device, and determining the temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image;

sending the determined temperature distribution area of the temporal artery to the thermal imaging device, wherein the thermal imaging device reads the temperature of the temporal artery from the infrared thermal image according to the determined temperature distribution area of the temporal artery; and

receiving the read temperature of the temporal artery from the thermal imaging device, and calculating the body temperature of the subject according to the read temperature of the temporal artery.

In one embodiment, determining the temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image includes:

determining a temporal artery location in the visible image; and

The temperature distribution area of the temporal artery is determined in the infrared thermal image according to the determined position of the temporal artery.

In one embodiment, the temperature of the temporal artery is selected as the highest temperature in the temperature distribution area of the temporal artery.

In one embodiment, the body temperature measuring device further comprises a temperature sensor in communication with said processor, configured to measure ambient temperature,

Wherein, calculating the body temperature of the subject according to the temperature of the read temporal artery includes:

The subject's body temperature was calculated from the temperature readings of the temporal artery and the measured ambient temperature.

In one embodiment, calculating the subject's body temperature according to the read temperature of the temporal artery and the measured ambient temperature comprises:

A heat balance calculation is performed on the read temperature of the temporal artery and the measured ambient temperature to determine the subject's body temperature.

According to another aspect of the present application, a body temperature measurement method is provided, comprising the following steps:

Capture the visible light image and infrared thermal image of the subject's face;

determining the temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image;

reading the temperature of the temporal artery from the infrared thermal image based on the determined temperature distribution area of the temporal artery; and

The subject's body temperature was calculated from the temperature reading of the temporal artery.

In one embodiment, determining the temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image includes:

determining a temporal artery location in the visible image; and

The temperature distribution area of the temporal artery is determined in the infrared thermal image according to the determined position of the temporal artery.

In one embodiment, the temperature of the temporal artery is selected as the highest temperature in the temperature distribution area of the temporal artery.

In one embodiment, the body temperature measurement method also includes measuring the ambient temperature,

Wherein, calculating the body temperature of the subject according to the temperature of the read temporal artery includes:

The subject's body temperature was calculated from the temperature readings of the temporal artery and the measured ambient temperature.

In one embodiment, calculating the subject's body temperature according to the read temperature of the temporal artery and the measured ambient temperature comprises:

A heat balance calculation is performed on the read temperature of the temporal artery and the measured ambient temperature to determine the subject's body temperature.

Through the above body temperature measurement device and method, at least one beneficial effect such as more convenient, accurate and intelligent body temperature measurement can be achieved.

Description of drawings

The above and other advantages of embodiments of the present application will become apparent from the detailed description made with reference to the following accompanying drawings, which are intended to illustrate exemplary embodiments of the present application rather than limit it. In the attached picture:

Fig. 1 is a structural schematic diagram of a body temperature measuring device according to the present application.

FIG. 2 is an exemplary schematic diagram of a body temperature measuring device according to an embodiment of the present application.

Fig. 3 is a flowchart of a body temperature measurement method according to an embodiment of the present application.

Detailed ways

For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are descriptions of exemplary embodiments of the application only, and are not intended to limit the scope of the application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, expressions of first, second, etc. are only used to distinguish one feature from another, and do not represent any limitation on the features. Thus, a first lens discussed hereinafter could also be termed a second lens without departing from the teachings of the present application.

In the drawings, the size and shape of some components may be exaggerated for convenience of illustration, and the drawings are merely examples and not drawn strictly to scale.

It should also be understood that the terms "comprises", "comprises", "has", "comprises" and/or "comprising", when used in this specification, means that there are stated features, integers, steps, operations , elements and/or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or combinations thereof. Furthermore, expressions such as "at least one of," when preceding a list of listed features, modify the entire listed feature and do not modify the individual elements of the list. In addition, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". Also, the word "exemplary" is intended to mean an example or illustration.

As used herein, the terms "substantially", "about", and similar terms are used as terms of approximation, not as terms of degree, and are intended to illustrate what would be recognized by one of ordinary skill in the art, measure Inherent bias in a value or calculated value.

Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted to have a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless It is expressly so defined herein.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

The present application is further described below in conjunction with specific examples.

Fig. 1 is a structural schematic diagram of a body temperature measuring device according to the present application.

As shown in FIG. 1 , the body temperature measuring device may include a visible light camera device 22 , a thermal imaging device 21 and a processor 23 . The processor 23 is capable of communicating with the visible light camera device 22 and the thermal imaging device 21 . For example, the processor 23 may be wired or wirelessly connected to the visible light camera device 22 and the thermal imaging device 21 .

Visible light camera 22 may be configured to capture a visible light image of the subject's face. For example, the visible light imaging device 22 may be a commercially available visible light imaging device. In some implementations, the visible light camera device 22 can send the captured visible light image to the processor 23 .

The thermal imaging device 21 may be configured to capture an infrared thermal image of the subject's face and be able to read the temperature from the infrared thermal image. For example, the thermal imaging device 21 may be a commercially available infrared thermal imager capable of capturing infrared thermal images and reading temperature from the infrared thermal images. In some implementations, the thermal imaging device 21 may send the captured infrared thermal image to the processor 23, and read the temperature at the area sent by the processor 23 from the infrared thermal image.

In some implementations, the thermal imaging device 21 may also include an infrared filter lens for measurement in the human body band, a metal structure for thermal balance of the thermal imaging sensor, and a small signal processing circuit, for example, capable of analyzing the weak output of the thermal imaging sensor. The electrical signal is filtered and amplified.

It should be noted that, in some embodiments, the thermal imaging device 21 may only be configured to capture infrared thermal images, and the corresponding function of reading temperature from the infrared thermal images may be performed by the processor 23 , for example. For example, corresponding infrared thermal image temperature recognition software and the like may be installed in the processor 23 .

The processor 23 may be configured to acquire a visible light image from the visible light imaging device 22 and an infrared thermal image from the thermal imaging device 21, and determine the temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image. In some embodiments, processor 23 may be, for example, a centrally controlled microprocessor device.

In the case that the thermal imaging device 21 can read the temperature from the infrared thermal image, the processor 23 can send the determined temperature distribution area of the temporal artery to the thermal imaging device 21, and then the thermal imaging device 21 can The temperature distribution area reads the temperature of the temporal artery from the infrared thermal image, and sends the read temperature of the temporal artery to the processor 23 .

It can be understood that, in the case that the thermal imaging device 21 is unable to read the temperature from the infrared thermal image, as mentioned above, the function of reading the temperature from the infrared thermal image can be performed by the processor 23, for example. In some embodiments, the processor 23 can directly read the temperature of the temporal artery from the infrared thermal image according to the determined temperature distribution area of the temporal artery through corresponding infrared thermal image temperature recognition software or the like. The above-described embodiments are all within the scope of the present application.

When the thermal imaging device 21 reads the temperature from the infrared thermal image, the processor 23 may receive the read temperature of the temporal artery from the thermal imaging device 21, and calculate the body temperature of the subject according to the read temperature of the temporal artery.

In some embodiments, the processor 23 determining the temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image may include: determining the position of the temporal artery in the visible light image; and determining in the infrared thermal image according to the determined position of the temporal artery The temperature distribution area of the temporal artery.

For example, in some embodiments, the processor 23 may first determine the area of the temporal artery from the visible light image, and then overlap the visible light image and the infrared thermal image, and then determine the area of the temporal artery in the infrared thermal image, that is, determine the infrared thermal image. The temperature distribution area of the temporal artery in the thermal image. In some implementations, the body temperature measuring device may also include a motor fine-tuning device for adjusting the lens position of the visible light camera device 22 or the thermal imaging device 21 . For example, the motor fine-tuning device can be arranged inside the lens of the visible light camera device 22 , so that the facial image captured by the visible light camera device 22 can overlap with the thermal image of the human face read by the thermal imaging device 21 . In some embodiments, the motor trimming device can be arranged inside the lens of the thermal imaging device 21 to adjust the position of the lens of the thermal imaging device 21 . It can be understood that the above implementations are merely exemplary, and the scope of the present application is not limited thereto.

It can be understood that the temperature of multiple temporal arteries can be read from the temperature distribution of the temporal arteries in the infrared thermal image. In certain embodiments, the temperature of the temporal artery may be chosen to be the highest temperature in the temperature distribution region of the temporal artery in order to reduce the likelihood of missing the detection of fever in the subject.

In some embodiments, the body temperature measuring device of the present application may further include a temperature sensor (not shown) in communication with the processor 23, which is configured to measure the ambient temperature. For example, the temperature sensor may be a commercially available thermometer or the like. In this case, the temperature sensor can send the measured ambient temperature to the processor 23, and the processor 23 can calculate the subject's body temperature according to the read temperature of the temporal artery and the measured ambient temperature.

In some embodiments, calculating the body temperature of the subject according to the read temperature of the temporal artery and the measured ambient temperature may include: performing heat balance calculation on the read temperature of the temporal artery and the measured ambient temperature to determine the temperature of the subject body temperature. In some embodiments, the trained temporal artery heat balance software can be pre-installed in the processor 23, and the temporal artery heat balance software can balance the temperature of the temporal artery read and the measured ambient temperature based on experience, so as to be more accurate. accurately determine the body temperature of the subject. For example, the temperature of the temporal artery read from a subject may be different in a colder environment than in a warmer environment (e.g., in a colder environment, the temperature of the temporal artery read by a subject The temperature of the temporal artery is lower; in a hotter environment, the temperature of the temporal artery read by the subject is higher), so it is necessary to comprehensively consider the temperature of the temporal artery read and the measured ambient temperature and carry out balance. Through the heat balance calculation according to the present application, a relatively accurate body temperature of the subject can be finally determined.

FIG. 2 is an exemplary schematic diagram of a body temperature measuring device according to an embodiment of the present application.

In the embodiment shown in Figure 2, the body temperature measuring device is shown as a handheld measuring device. It should be noted that the handheld measuring device is only exemplary, and the body temperature measuring device of the present application may also be in various other forms.

In the embodiment shown in FIG. 2 , the thermal imaging device 21 is disposed above the visible light imaging device 22 , and the processor 23 is disposed below the visible light imaging device 22 . Moreover, the thermal imaging device 21 and the visible light camera device 22 are in the same window, that is, the thermal imaging device 21 and the visible light camera device 22 can share the same window, so that the volume of the body temperature measuring device can be reduced. It can be understood that the scope of the present application is not limited thereto, and the positions of various components can be selected according to actual needs.

In the embodiment shown in FIG. 2 , the body temperature measuring device may also include a main body casing 24, a display module 26 mounted on the main body casing 24 and connected to the processor 23, a storage module 20, a key control module 27 and an installation and The power module 25 at the bottom of the host housing 24 . Each will be described below.

In some implementations, the processor 23 can convert the processed data into images and temperature values that can be recognized by the user, and display them through the display module 26 . The display module 26 can be used for displaying images, temperature data values and operation content of human-computer interaction, and can be installed on the front of the host housing 24 to facilitate information reading.

The storage module 20 can be used to perform the data storage function of the entire product, and can be installed on the top of the main body casing 24 to facilitate the loading and unloading of the internal storage card. The memory module 20 includes a memory card mounting seat and a data transmission interface. The data interface of the memory module 20 can realize the transmission and reading of stored data, and can also charge the built-in battery at the same time.

The button control module 27 can be used for man-machine interaction (for example, the output of control commands), and can be installed under the display module 26, which is convenient for the user to control and operate the whole machine while reading the displayed information.

The power module 25 can be used for the power supply of the whole product and can be installed on the bottom of the host casing 24 . Of course, this part can be powered by dry batteries or lithium-ion rechargeable batteries according to actual needs.

Fig. 3 is a flowchart of a body temperature measurement method according to an embodiment of the present application.

As shown in Figure 3, the body temperature measurement method according to the embodiment of the present application may include the following steps:

S1 captures the visible light image and infrared thermal image of the subject's face;

S2 Determine the temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image;

S3 reading the temperature of the temporal artery from the infrared thermal image according to the determined temperature distribution area of the temporal artery; and

S4 calculates the subject's body temperature according to the read temperature of the temporal artery.

In some embodiments, step S2 determining the temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image may include:

determine the location of the temporal artery in the visible light image; and

The temperature distribution area of the temporal artery is determined in the infrared thermal image according to the determined position of the temporal artery.

In some embodiments, the temperature of the temporal artery may be selected as the highest temperature in the temperature distribution region of the temporal artery.

In some embodiments, the body temperature measurement method according to the embodiments of the present application may further include measuring the ambient temperature. In this case, step S4 calculating the subject's body temperature according to the read temperature of the temporal artery may include: calculating the subject's body temperature according to the read temperature of the temporal artery and the measured ambient temperature.

In some embodiments, calculating the body temperature of the subject according to the read temperature of the temporal artery and the measured ambient temperature may include: performing heat balance calculation on the read temperature of the temporal artery and the measured ambient temperature to determine the temperature of the subject body temperature.

Generally speaking, the body temperature measuring method according to the embodiment of the present application generally corresponds to the body temperature measuring device according to the embodiment of the present application, so it is not repeated here for the sake of brevity, and relevant content can be referred to above according to the present application A description of an embodiment of a body temperature measuring device.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principle. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, but should also cover the technical solution formed by the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of or equivalent features thereof. For example, a technical solution formed by replacing the above-mentioned features with technical features with similar functions disclosed in (but not limited to) this application.

Claims (10)

1. A body temperature measurement device, comprising:

A visible light camera device configured to capture a visible light image of the face of the subject;

A thermal imaging device configured to capture an infrared thermal image of a subject's face and capable of reading a temperature from the infrared thermal image; and

A processor configured to:

Acquiring the visible light image from the visible light camera device and the infrared thermal image from the thermal imaging device, and determining the temperature distribution area of the temporal artery in the infrared thermal image according to the visible light image;

Sending the determined temperature distribution area of the temporal artery to the thermal imaging device, wherein the thermal imaging device reads the temperature of the temporal artery from the infrared thermal image according to the determined temperature distribution area of the temporal artery; and

and receiving the read temperature of the temporal artery from the thermal imaging device, and calculating the body temperature of the testee according to the read temperature of the temporal artery.

2. the apparatus of claim 1, wherein determining a temperature distribution region of a temporal artery in the infrared thermal image from the visible light image comprises:

Determining a temporal artery location in the visible light image; and

Determining a temperature distribution area of the temporal artery in the infrared thermal image according to the determined location of the temporal artery.

3. the apparatus of claim 1, wherein the temperature of the temporal artery is selected as a highest temperature in a temperature profile region of the temporal artery.

4. The device of claim 1, further comprising a temperature sensor in communication with the processor configured to measure an ambient temperature,

wherein calculating the temperature of the subject from the read temperature of the temporal artery comprises:

and calculating the body temperature of the testee according to the read temperature of the temporal artery and the measured ambient temperature.

5. the apparatus of claim 4, wherein calculating the subject's body temperature from the read temporal artery temperature and the measured ambient temperature comprises:

a heat balance calculation is performed on the read temperature of the temporal artery and the measured ambient temperature to determine the subject's body temperature.

6. a method of measuring body temperature, comprising the steps of:

capturing a visible light image and an infrared thermal image of the face of a testee;

determining a temperature distribution area of a temporal artery in the infrared thermal image according to the visible light image;

Reading the temperature of the temporal artery from the infrared thermal image according to the determined temperature distribution area of the temporal artery; and

and calculating the temperature of the testee according to the read temperature of the temporal artery.

7. The method of claim 6, wherein determining a temperature distribution region of a temporal artery in the infrared thermal image from the visible light image comprises:

Determining a temporal artery location in the visible light image; and

determining a temperature distribution area of the temporal artery in the infrared thermal image according to the determined location of the temporal artery.

8. The method of claim 6, wherein the temperature of the temporal artery is selected as a highest temperature in a temperature profile region of the temporal artery.

9. The method of claim 6, further comprising measuring an ambient temperature,

wherein calculating the temperature of the subject from the read temperature of the temporal artery comprises:

and calculating the body temperature of the testee according to the read temperature of the temporal artery and the measured ambient temperature.

10. The method of claim 9, wherein calculating the subject's body temperature from the read temporal artery temperature and the measured ambient temperature comprises:

A heat balance calculation is performed on the read temperature of the temporal artery and the measured ambient temperature to determine the subject's body temperature.