WO2022007115A1

WO2022007115A1 - Infrared temperature measurement scene identification system and corresponding terminal

Info

Publication number: WO2022007115A1
Application number: PCT/CN2020/109743
Authority: WO
Inventors: 章微微
Original assignee: 章微微
Priority date: 2020-07-07
Filing date: 2020-08-18
Publication date: 2022-01-13
Also published as: CN111780878A

Abstract

An infrared temperature measurement scene identification system and a corresponding terminal. The system comprises: an infrared thermometer manipulated by a temperature measurement staff to perform a measurement operation on the forehead of a person of which the temperature to be measured to obtain the corresponding forehead temperature; a distance measurement device provided on the left side of a temperature measurement port of the infrared thermometer, and used for measuring the real-time distance between a target in front of the temperature measurement port and the temperature measurement port; and a state control mechanism separately connected to the infrared thermometer and the distance measurement device, and used for sending a temperature measurement startup command when the received real-time distance ranges from 5 cm to 6 cm. The infrared temperature measurement scene identification system and the corresponding terminal are simple in structure, convenient, and practical. A corresponding infrared human body temperature measurement operation is performed only when the forehead of the human body is detected, so that the power utilization efficiency of an infrared temperature measurement mechanism is improved.

Description

Infrared temperature measurement scene recognition system and corresponding terminal

technical field

The invention relates to the field of human body temperature measurement, in particular to an infrared temperature measurement scene identification system and a corresponding terminal.

Background technique

In the production process, infrared temperature measurement technology has played an important role in product quality control and monitoring, equipment online fault diagnosis and safety protection, and energy saving. In the past 20 years, non-contact infrared body thermometers have developed rapidly in technology, with continuous improvement in performance, enhanced functions, increasing varieties, and expanding scope of application. Compared with the contact temperature measurement method, infrared temperature measurement has the advantages of fast response time, non-contact, safe use and long service life. Non-contact infrared thermometers include portable, online and scanning three series, and have various options and computer software, each series has various models and specifications.

Since infrared temperature measurement adopts a non-contact temperature measurement mechanism, infrared measurement technology is widely used in some contact-sensitive application fields. However, in the prior art, the infrared temperature measuring device is generally a terminal device, and if it keeps running all the time, the endurance of the infrared temperature measuring device will inevitably be reduced.

SUMMARY OF THE INVENTION

In order to solve the related technical problems in the prior art, the present invention provides an infrared temperature measurement scene identification system, which can effectively identify whether the infrared thermometer currently enters the forehead temperature measurement scene in time, and only when entering the forehead temperature measurement scene Start the corresponding infrared temperature measurement operation, thereby reducing the power consumption of the infrared thermometer and prolonging the use time of the infrared thermometer.

To this end, the present invention needs to have at least the following important invention points:

(1) Identify the working scene of the infrared thermometer used to detect the temperature of the human forehead, to determine that when entering the forehead temperature measurement scene, the temperature measurement work of the infrared thermometer can be started, thereby avoiding unnecessary waste of power;

(2) When there is an object within the preset distance range in front of the infrared thermometer and the shape of the object matches the shape of the forehead of the human body, it is determined that the infrared thermometer enters the forehead temperature measurement scene.

According to an aspect of the present invention, an infrared temperature measurement scene recognition system is provided, and the system includes:

Infrared thermometer, which is used to measure the forehead of the person to be measured under the control of the person to obtain the corresponding forehead temperature;

A distance detection device, arranged on the left side of the temperature measurement port of the infrared thermometer, is used to detect the real-time distance from the target in front of the temperature measurement port to the temperature measurement port;

a state control mechanism, respectively connected to the infrared thermometer and the distance detection device, for issuing a temperature measurement start command when the received real-time distance is between 5 cm and 6 cm;

The state control mechanism is also used to issue a temperature measurement stop command when the received real-time distance is 5 cm to 6 cm away;

A temperature output device, connected with the infrared thermometer, for adding 0.3 degrees Celsius to the forehead temperature to obtain an upper temperature limit, subtracting 0.3 degrees Celsius from the forehead temperature to obtain a lower temperature limit, and combining the upper temperature limit and all The temperature range output composed of the above temperature lower limit;

an instant display device, embedded in the shell of the infrared thermometer, connected with the temperature output device, for receiving and displaying the temperature range;

An infrared imaging mechanism, arranged on the right side of the temperature measurement port of the infrared thermometer, is used to perform an infrared imaging operation on the scene in front of the temperature measurement port;

The forehead identification mechanism is connected with the infrared imaging mechanism, and is used for identifying whether there is a forehead object in the infrared image output by the infrared imaging mechanism, and when there is a forehead object, a forehead identification command is issued, otherwise, a forehead identification command is issued. Order;

Wherein, when the infrared thermometer receives the temperature measurement start command and receives the forehead identification command, it enters the working mode from the sleep mode;

Wherein, identifying whether there is a forehead object in the infrared image output by the infrared imaging mechanism includes: identifying whether there is a forehead object in the infrared image output by the infrared imaging mechanism based on the shape features of the human forehead.

According to another aspect of the present invention, an infrared temperature measurement scene recognition terminal is also provided, wherein the terminal includes: a memory and a processor, the processor is connected to the memory; the memory is used for Store executable instructions of the processor; the processor is used to call the executable instructions in the memory, so as to use the infrared temperature measurement scene recognition system as described above to decide based on whether the infrared temperature measurement scene is currently entered Whether to start the corresponding infrared temperature measurement action method.

The infrared temperature measurement scene identification system and the corresponding terminal of the present invention are simple in structure, convenient and practical. Since the corresponding infrared human body temperature measurement operation is performed only when the forehead of the human body is detected, the power utilization efficiency of the infrared temperature measurement mechanism is improved.

Description of drawings

Embodiments of the present invention will be described below with reference to the accompanying drawings, wherein:

FIG. 1 is a schematic diagram of the working principle of an infrared thermometer of an infrared temperature measurement scene identification system according to an embodiment of the present invention.

Reference numerals: 1 object; 2 objective lens; 3 heated plate; 4 thermocouple; 5 eyepiece

detailed description

The embodiments of the infrared temperature measurement scene identification system and the corresponding terminal of the present invention will be described in detail below with reference to the accompanying drawings.

The wavelength of infrared rays is between 0.76 and 100 μm. According to the wavelength range, it can be divided into four categories: near-infrared, mid-infrared, far-infrared, and extremely far-infrared. Its position in the continuous spectrum of electromagnetic waves is the area between radio waves and visible light. . Infrared radiation is the most extensive electromagnetic wave radiation in nature. It is based on the random movement of molecules and atoms of any object in the normal environment, and constantly radiates thermal infrared energy, the movement of molecules and atoms. The more intense, the greater the radiation energy, and vice versa, the smaller the radiation energy.

Objects with a temperature above absolute zero will radiate infrared rays due to their own molecular motion. After the power signal radiated by the object is converted into an electrical signal by the infrared detector, the output signal of the imaging device can completely simulate the spatial distribution of the surface temperature of the scanned object in one-to-one correspondence. The thermal image corresponding to the thermal distribution on the surface of the object. Using this method, long-distance thermal image imaging and temperature measurement of the target can be realized and analyzed and judged.

When applying infrared temperature measurement to perform human body temperature measurement, for example, when applying it to high-risk respiratory disease inspection, if the infrared measurement of human body temperature is still maintained in the state of no one, it will inevitably lead to waste of power consumption of electronic equipment.

In order to overcome the above deficiencies, the present invention builds an infrared temperature measurement scene identification system and a corresponding terminal, which can effectively solve the corresponding technical problems.

1 is a schematic diagram of the working principle of an infrared thermometer of an infrared temperature measurement scene identification system according to an embodiment of the present invention, and the system includes:

The infrared thermometer is used to perform a measurement operation on the forehead of the person to be measured under the control of the temperature measurement personnel to obtain the corresponding forehead temperature, wherein D, d, L, and l are the infrared thermometers respectively. Various temperature measurement parameters related to distance;

The state control mechanism is also used to issue a temperature measurement abort command when the received real-time distance is 5 cm to 6 cm away;

Next, the specific structure of the infrared temperature measurement scene identification system of the present invention is further described.

The infrared temperature measurement scene identification system may also include:

The bandwidth analysis device is connected with the output interface of the forehead identification mechanism, and is used for detecting the real-time output bandwidth of the forehead identification mechanism.

In the infrared temperature measurement scene identification system:

The bandwidth analysis device is further configured to issue a data loss early warning command when the detected real-time output bandwidth is greater than the preset bandwidth threshold.

In the infrared temperature measurement scene identification system:

The bandwidth analysis device is further configured to issue a data transmission reliable command when the detected real-time output bandwidth is less than or equal to the preset bandwidth threshold.

A temperature sensing mechanism, disposed inside the infrared imaging mechanism, is used for sensing the internal temperature of the infrared imaging mechanism.

In the infrared temperature measurement scene identification system:

The temperature sensing mechanism includes a first sensing device for sensing and outputting the internal temperature of the infrared imaging mechanism.

In the infrared temperature measurement scene identification system:

The temperature sensing device further includes a second sensing device for sensing and outputting the external temperature of the infrared imaging mechanism.

A temperature difference analysis mechanism, connected to the first sensing device and the second sensing device respectively, for determining whether to execute an alarm action related to an excessive temperature difference based on the difference between the internal temperature and the external temperature of the infrared imaging mechanism ;

Wherein, the temperature difference analysis mechanism further includes an audible and visual alarm device for performing alarm actions related to excessive temperature difference;

Wherein, the sound and light alarm device includes a sound alarm sub-device and a light-emitting alarm sub-device, and at least one of the sound-alarm sub-device and the light-emitting alarm sub-device is used to perform an alarm action related to an excessive temperature difference.

In the infrared temperature measurement scene identification system:

The infrared thermometer enters the sleep mode from the working mode when receiving the temperature measurement start command or the forehead unrecognized command.

Meanwhile, in order to overcome the above deficiencies, the present invention also builds an infrared temperature measurement scene recognition terminal, the terminal includes: a memory and a processor, and the processor is connected to the memory;

Wherein, the memory is used to store executable instructions of the processor;

Wherein, the processor is used to call the executable instructions in the memory, so as to use the infrared temperature measurement scene recognition system as described above to decide whether to start the corresponding infrared temperature measurement action based on whether the infrared temperature measurement scene is currently entered. Methods.

In addition, due to the existence of black body radiation, any object radiates electromagnetic waves to the outside depending on the temperature. The part with a wavelength of 2.0 to 1000 microns is called thermal infrared. Thermal infrared imaging images the object through thermal infrared sensitive CCD, which can reflect the temperature field on the surface of the object. Thermal infrared has a wide range of applications in military, industrial, automotive assisted driving, and medical fields.

From the analysis of physical principles, the human body is a natural biological infrared radiation source, which can continuously emit and absorb infrared radiation to the surrounding. The temperature distribution of the normal human body has certain stability and characteristics, and the temperature of each part of the body is different, forming different thermal fields. When a disease or functional change occurs somewhere in the human body, the blood flow in that place will change accordingly, resulting in a change in the local temperature of the human body, which is manifested as high or low temperature.

It should be understood that various parts of the present invention may be implemented in hardware, software, firmware or a combination thereof. In the above-described embodiments, various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or a combination of the following techniques known in the art: Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.

Those skilled in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, and the program can be stored in a computer-readable storage medium. When executed, one or a combination of the steps of the method embodiment is included.

The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like. Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims

An infrared temperature measurement scene identification system, characterized in that the system includes:

Infrared thermometer, which is used to measure the forehead of the person to be measured under the control of the person to obtain the corresponding forehead temperature;

A distance detection device, arranged on the left side of the temperature measurement port of the infrared thermometer, is used to detect the real-time distance from the target in front of the temperature measurement port to the temperature measurement port;

a state control mechanism, respectively connected to the infrared thermometer and the distance detection device, for issuing a temperature measurement start command when the received real-time distance is between 5 cm and 6 cm;

The state control mechanism is also used to issue a temperature measurement stop command when the received real-time distance is 5 cm to 6 cm away;

A temperature output device, connected with the infrared thermometer, for adding 0.3 degrees Celsius to the forehead temperature to obtain an upper temperature limit, subtracting 0.3 degrees Celsius from the forehead temperature to obtain a lower temperature limit, and combining the upper temperature limit and all The temperature range output composed of the above temperature lower limit;

an instant display device, embedded in the shell of the infrared thermometer, connected with the temperature output device, for receiving and displaying the temperature range;

An infrared imaging mechanism, arranged on the right side of the temperature measurement port of the infrared thermometer, is used to perform an infrared imaging operation on the scene in front of the temperature measurement port;

The forehead identification mechanism is connected with the infrared imaging mechanism, and is used for identifying whether there is a forehead object in the infrared image output by the infrared imaging mechanism, and when there is a forehead object, a forehead identification command is issued, otherwise, a forehead identification command is issued. Order;

Wherein, when the infrared thermometer receives the temperature measurement start command and receives the forehead identification command, it enters the working mode from the sleep mode;

Wherein, identifying whether there is a forehead object in the infrared image output by the infrared imaging mechanism includes: identifying whether there is a forehead object in the infrared image output by the infrared imaging mechanism based on the shape features of the human forehead.
The infrared temperature measurement scene identification system according to claim 1, wherein the system further comprises:

The bandwidth analysis device is connected with the output interface of the forehead identification mechanism, and is used for detecting the real-time output bandwidth of the forehead identification mechanism.
The infrared temperature measurement scene identification system according to claim 2, wherein:

The bandwidth analysis device is further configured to issue a data loss early warning command when the detected real-time output bandwidth is greater than the preset bandwidth threshold.
The infrared temperature measurement scene identification system according to claim 3, wherein:

The bandwidth analysis device is further configured to issue a data transmission reliable command when the detected real-time output bandwidth is less than or equal to the preset bandwidth threshold.
The infrared temperature measurement scene identification system according to claim 4, wherein the system further comprises:

The temperature sensing mechanism is arranged inside the infrared imaging mechanism and is used for sensing the internal temperature of the infrared imaging mechanism.
The infrared temperature measurement scene identification system according to claim 5, wherein:

The temperature sensing mechanism includes a first sensing device for sensing and outputting the internal temperature of the infrared imaging mechanism.
The infrared temperature measurement scene identification system of claim 6, wherein:

The temperature sensing device further includes a second sensing device for sensing and outputting the external temperature of the infrared imaging mechanism.
The infrared temperature measurement scene identification system according to claim 7, wherein the system further comprises:

A temperature difference analysis mechanism, connected to the first sensing device and the second sensing device respectively, for determining whether to execute an alarm action related to an excessive temperature difference based on the difference between the internal temperature and the external temperature of the infrared imaging mechanism ;

Wherein, the temperature difference analysis mechanism further includes an audible and visual alarm device for performing alarm actions related to excessive temperature difference;

Wherein, the sound and light alarm device includes a sound alarm sub-device and a light-emitting alarm sub-device, and at least one of the sound-alarm sub-device and the light-emitting alarm sub-device is used to perform an alarm action related to an excessive temperature difference.
The infrared temperature measurement scene identification system according to claim 8, wherein:

The infrared thermometer enters the sleep mode from the working mode when receiving the temperature measurement start command or the forehead unrecognized command.
An infrared temperature measurement scene identification terminal, characterized in that the terminal comprises: a memory and a processor, and the processor is connected to the memory;

the memory for storing executable instructions of the processor;

The processor is used to call the executable instructions in the memory, so as to realize the use of the infrared temperature measurement scene identification system according to any one of claims 1-9 to determine whether to start the corresponding infrared temperature measurement scene based on whether it is currently entering the infrared temperature measurement scene. The method of infrared temperature measurement action.