CN111307296A - An infrared temperature measurement module, an infrared temperature measurement device and an infrared temperature measurement method - Google Patents

Abstract

The application discloses an infrared temperature measurement module, an infrared temperature measurement device and an infrared temperature measurement method. Since it includes an infrared temperature sensor and a convex lens for refracting and converging the infrared radiation returned by the measured target to the infrared temperature sensor, the convex lens is arranged in front of the infrared temperature sensor; The target temperature information is processed, and the PCB circuit board that outputs the temperature value data after compensation and calibration is performed; the inner side wall of the cavity encapsulating the convex lens and the infrared temperature sensor is provided with a reflective surface. The application can improve the measurement range and measurement accuracy of the infrared temperature sensor, increase the measurement distance, the measurement distance can reach 50-100cm, improve the detection efficiency, and avoid contact infection; the reflective surface is a zigzag reflective surface; it can be The concentrating effect is further increased; the infrared measuring module of the present application can be mounted on the temperature measuring gun, and has a simple structure and convenient installation.

Description

An infrared temperature measurement module, an infrared temperature measurement device and an infrared temperature measurement method

technical field

The present application relates to the technical field of temperature measurement, in particular to an infrared temperature measurement module, a non-contact infrared temperature measurement device and an infrared temperature measurement method.

Background technique

Infrared thermometers (non-contact infrared thermometers) are widely used in life and work. The infrared thermometers on the market do not require as long a temperature measurement time as a thermometer, and can obtain measurement results in a short time. And display it on the LCD screen or send it to the display device through the serial port, it can also record multiple measurement records and go back to check it again.

However, the measurement and detection distance of the infrared temperature measuring gun in the prior art is too short, and the measurement range is about 5-15 cm. Generally, it can only be installed on a handheld device. The infrared temperature measuring gun of the handheld device needs to be very close to detect body temperature. When the body temperature is detected, the detection efficiency is not high, and the user sometimes accidentally touches the tested person due to improper operation. If it is a fever patient, it is easy to cause contact infection. Therefore, the existing technology has shortcomings and needs to be improved.

Therefore, the existing technology still needs to be improved and developed.

SUMMARY OF THE INVENTION

In order to overcome the shortcoming that the test distance in the prior art is too short, the purpose of this application is to provide an infrared temperature measurement module, an infrared temperature measurement device and an infrared temperature measurement method, and the application adopts a sensor module for infrared temperature measurement, The measurement distance is increased, and the measurement distance can reach 50-100cm, which improves the detection efficiency and makes the temperature measurement module more widely used, so as to meet the measurement requirements of different environments and avoid contact infection.

The technical solution of this application is as follows:

An infrared temperature measurement module, comprising:

Infrared temperature measurement module, the infrared temperature measurement module includes a convex lens for refracting and converging infrared rays radiated back by the measured target to the infrared temperature sensor, and a convex lens for collecting the temperature information of the measured target according to the infrared rays refracted and concentrated by the convex lens. Infrared temperature sensor, the convex lens is arranged in front of the infrared temperature sensor, the convex lens and the infrared temperature sensor are packaged in the same cavity, and the center line of the convex lens and the infrared temperature sensor are on the same horizontal line;

A PCB circuit board connected to the infrared temperature sensor for processing the temperature information of the measured target collected by the infrared temperature sensor, and outputting temperature value data after compensation and calibration;

The distance between the infrared temperature sensor and the convex lens is greater than or equal to 1 times the focal length of the convex lens and less than twice the focal length of the convex lens;

The inner side wall of the cavity encapsulating the convex lens and the infrared temperature sensor is provided with a reflective surface; the reflective surface is a zigzag reflective surface.

The infrared temperature measurement module, wherein the infrared temperature measurement module comprises: a hollow-shaped lens barrel, disposed at the front end of the lens barrel, a front cover for installing a convex lens, and installed on the lens barrel through the front cover the convex lens, and the infrared temperature sensor arranged at the rear end of the lens barrel; the convex lens and the infrared temperature sensor are packaged in the cavity of the lens barrel.

The infrared temperature measurement module, wherein the inner sidewall of the lens barrel is provided with the zigzag-shaped reflective surface, or the inner sidewall of the lens barrel is provided with a horn-shaped zigzag reflective surface from the outside to the inside;

The lens barrel is a copper lens barrel, the front cover is screwed on the copper lens barrel, and the convex lens can be replaced by movably rotating the front cover.

In the infrared temperature measurement module, when the distance between the infrared temperature sensor and the convex lens is equal to the focal length of the convex lens, a + 10% deviation is set.

In the infrared temperature measurement module, the focal length of the convex lens is 11.07 mm, the distance between the infrared temperature sensor and the convex lens is 12 mm, and the length of the lens barrel is 18.6 mm.

The infrared temperature measurement module, wherein the convex lens, the infrared temperature sensor, and the PCB circuit board are integrated and installed in the same package shell;

The convex lens is a silicon convex lens made of silicon or a germanium convex lens made of germanium; the reflecting surface adopts a smooth mirror surface to realize the reflecting surface of a copper piece that reflects light.

The infrared temperature measurement module, wherein the infrared temperature measurement module is installed at the front end of the PCB circuit board, and a slot base that can be plugged with a cable is arranged at the rear end;

The outside of the infrared temperature measurement module is a square cover structure, the front end of the square cover structure is provided with a circular hole corresponding to the position of the convex lens, the front end is installed with the infrared temperature measurement module, and the rear end is provided with a PCB with a slot base The circuit board is installed in the square cover structure.

The infrared temperature measurement module, wherein the distance between the infrared temperature sensor and the convex lens can be adjusted by a fine-tuning mechanism, and the adjustable distance range is greater than 1 times the focal length of the convex lens and less than twice the focal length .

A non-contact infrared temperature measurement device, comprising a display screen, and any one of the infrared temperature measurement modules, wherein the infrared temperature measurement module is arranged on the non-contact infrared temperature measurement device.

An infrared temperature measurement method for an infrared temperature measurement module as described in any of the above, comprising the steps of:

Through the convex lens encapsulated in front of the infrared temperature sensor, the infrared rays radiated by the measured target are refracted and converged to the infrared temperature sensor;

The infrared temperature sensor collects the temperature information of the measured target according to the infrared rays gathered by the convex lens and the infrared rays reflected by the inner wall of the cavity;

The PCB circuit board connected with the infrared temperature sensor processes the temperature information of the measured target collected by the infrared temperature sensor, and outputs the temperature value data after compensation and calibration.

The beneficial effects of the present application are: the infrared temperature measurement module, the infrared temperature measurement device and the infrared temperature measurement method provided by the present application, because the infrared temperature measurement module is adopted, the infrared temperature measurement module includes a method for collecting the measured target. An infrared temperature sensor for temperature information, and a convex lens for refracting and converging the infrared radiation returned by the measured target radiation to the infrared temperature sensor, the convex lens is arranged in front of the infrared temperature sensor, and the convex lens and the infrared temperature sensor are packaged in the same cavity inside the body, and the convex lens and the center line of the infrared temperature sensor are on the same horizontal line; the one connected to the infrared temperature sensor is used to process the measured target temperature information collected by the infrared temperature sensor, and output the temperature after compensation and calibration. The PCB circuit board of the value data; the distance between the infrared temperature sensor and the convex lens is greater than or equal to 1 times the focal length of the convex lens and less than twice the focal length of the convex lens; package the convex lens and the infrared temperature sensor The inner side wall of the cavity is provided with a reflective surface. In the present application, a convex lens is added to the infrared measuring module. The focusing performance of the convex lens can improve the measuring range and measuring accuracy of the infrared temperature sensor, increase the measuring distance, and the measuring distance can reach 50-100 cm. The temperature module is more widely used, so as to meet the measurement requirements of different environments, and to avoid contact infection. In the present application, the inner side wall of the cavity encapsulating the convex lens and the infrared temperature sensor is provided with a reflective surface, and the reflective surface is a zigzag reflective surface (121 as shown in FIG. 4 ); The measurement is more accurate under the condition that the measurement distance is guaranteed to be extended; the infrared measurement module of the present application can be installed on the temperature measuring gun, which can be used for individuals, and is also suitable for the environment where the flow of people is large and the temperature needs to be measured, and the structure is simple and easy to install. convenient.

Description of drawings

FIG. 1 is a schematic three-dimensional structural diagram of an infrared temperature measurement module without a square cover structure according to an embodiment of the present application.

2 is a schematic diagram of an infrared light path of an infrared temperature measurement module of an infrared temperature measurement module according to an embodiment of the present application.

FIG. 3 is a schematic diagram of the installation distance of each component of the infrared temperature measurement module of the infrared temperature measurement module according to the embodiment of the present application.

FIG. 4 is a schematic diagram of the reflective surface of the zigzag bell mouth of the infrared temperature measurement module of the infrared temperature measurement module according to the embodiment of the present application.

FIG. 5 is a schematic structural diagram of a square cover of an infrared temperature measurement module according to an embodiment of the present application.

FIG. 6 is a flowchart of an infrared temperature measurement method of an infrared temperature measurement module according to an embodiment of the present application.

Detailed ways

The application provides an infrared temperature measurement module, an infrared temperature measurement device and an infrared temperature measurement method. In order to make the purpose, technical solutions and effects of the application clearer and clearer, the application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

The inventor's research found that an infrared temperature sensor is a device that uses infrared rays to measure temperature. According to the measurement principle, infrared temperature sensors can be divided into two categories: photoelectric infrared temperature sensors and pyroelectric infrared temperature sensors. Pyroelectric infrared temperature sensor uses the thermal effect of infrared radiation to measure the absorbed infrared radiation through thermoelectric effect, pyroelectric effect and thermistor, etc., and indirectly measure the temperature of radiating infrared light objects.

The principle of infrared temperature measurement is: as long as the temperature of any object is higher than absolute zero (-273°C), there will be thermal radiation emitted to the outside. But it always contains infrared radiation. For objects below 1,000 degrees Celsius, the strongest electromagnetic waves in the thermal radiation are infrared waves, so the measurement of the object's own infrared radiation can accurately determine its surface temperature, which is infrared temperature measurement. The objective basis on which the temperature measurement is based.

However, the measurement and detection distance of the infrared temperature measuring gun in the prior art is too short, and the measurement range is about 5-15 cm. Generally, it can only be installed on a handheld device. The infrared temperature measuring gun of the handheld device needs to be very close to detect body temperature. When the body temperature is detected, the detection efficiency is not high, and the user sometimes accidentally touches the tested person due to improper operation. If it is a fever patient, it is easy to cause contact infection. Therefore, the existing technology has shortcomings and needs to be improved.

To this end, Embodiment 1 of the present application provides an infrared temperature measurement module. As shown in FIG. 1 and FIG. 2 , the infrared temperature measurement module described in Embodiment 1 includes:

Infrared temperature measurement module 100, the infrared temperature measurement module 100 includes a convex lens 10 for refracting and converging infrared rays returned by the measured target radiation to the infrared temperature sensor 110, and for collecting the infrared rays refracted and converging according to the convex lens 10, and collecting the an infrared temperature sensor 110 for measuring target temperature information;

The PCB circuit board 14 connected to the infrared temperature sensor 110 and used for processing the measured target temperature information collected by the infrared temperature sensor 110, and outputting temperature value data after compensation and calibration;

As shown in FIG. 1 and FIG. 2 , in the embodiment of the present application, the convex lens 10 is disposed in front of the infrared temperature sensor 110 , the convex lens 10 and the infrared temperature sensor 110 are packaged in the same cavity, and the convex lens 10 and the infrared temperature sensor 110 are packaged in the same cavity. The center line of the infrared temperature sensor 110 is on the same horizontal line, as shown in FIG. 2; when using the infrared temperature measurement module of this embodiment to measure temperature, the infrared temperature radiated by the measured target is refracted by the convex lens packaged in front of the infrared temperature sensor. Convergence to the infrared temperature sensor; the infrared temperature sensor collects the temperature information of the measured target according to the infrared rays gathered by the convex lens.

Because of the converging function of the convex lens, the lighting principle of the convex lens (10) is shown in FIG. If the measured object is at different positions in front of the convex lens, the light emitted by the object will have different convergence conditions after passing through the convex lens, that is, the imaging properties of the object will be different. A convex lens 10 is arranged in front of the infrared temperature sensor 110, which can make the light emitted from the rear focus F1 of the mirror into a beam of parallel light, so that the infrared temperature sensor 110 detects and concentrates the infrared rays more concentrated. The intensity of the central light intensity and the brightness of the spot are increased, and the light extraction efficiency is high. In this embodiment, the measurement accuracy of the infrared temperature sensor 110 is improved, and the measurement distance can be extended to 50-100 cm.

This embodiment provides an infrared temperature measurement module, which can be used for an infrared temperature measurement gun and a security inspection door. When the infrared temperature measuring gun is used, the infrared sensor module can be installed in the casing slot of the infrared temperature measuring gun, and the real-time measurement data can be sent through the serial port. In the application of the security door, the infrared sensor module can be placed in the middle of the top frame of the security door, and the data can also be sent through the serial port.

In the embodiment of the present application, in order to better focus the light on the entire surface source on the infrared temperature sensor 110, the distance between the front surface of the infrared temperature sensor 110 and the rear surface of the convex lens 10 is greater than or equal to the above 1 times the focal length of the convex lens 10 and less than twice the focal length of the convex lens 10 . As shown in FIG. 2 , because the distance between the front surface of the infrared temperature sensor 110 and the rear surface of the convex lens 10 is greater than or equal to 1 times the focal length of the convex lens 10 and less than twice the focal length of the convex lens 10 The distance range is the convergence range of the convex lens (as shown in Figure 2, from the 1-fold focal length point F of the convex lens 10 to the 2-fold focal length range), so that the infrared rays radiated from the subject's body temperature can be concentrated after the convex lens converges, and the body temperature can be concentrated. The measurement data is more accurate, and the measurement distance can be farther.

As shown in FIG. 2 , in this embodiment, the infrared sensor 110 includes a sensing chip 111 and a heat dissipation ring 112 arranged around the sensing chip 111 . Preferably, as shown in FIG. The distance between the wafer 111 and the convex lens 10 is greater than or equal to one focal length of the convex lens 10 and less than twice the focal length of the convex lens 10 . The infrared sensor 110 makes the temperature measurement more accurate for the sensing chip 111 to receive the infrared rays in the converging range of the convex lens.

As shown in FIG. 3 , using the infrared temperature measurement module, the focal length F of the convex lens 10 is 11.07 mm, the distance between the infrared temperature sensor 110 and the convex lens 10 is 12 mm, and the length of the lens barrel 12 is 18.6 mm. The setting of this distance point achieves the best measurement effect.

That is, in the embodiment of the present application, in order to better focus the light on the entire surface source on the infrared temperature sensor 110, the distance between the infrared temperature sensor 110 and the convex lens 10 should be greater than 1 times the focal length of the convex lens 10 and less than 2 times the focal length. . The focal length of the convex lens (10) used in this application is 11.07 mm, and the distance between the infrared temperature sensor 110 and the convex lens 10 is 12 mm to achieve length integration, that is, the convex lens 10, the infrared temperature sensor 110 and the signal processor are integrated in the same package. The length of the lens barrel 12 is 18.6mm.

In the embodiment of the present application, in order to further improve the measurement effect, the inner side wall of the cavity encapsulating the convex lens 10 and the infrared temperature sensor 110 is provided with a reflective surface. Measure the effect.

As an embodiment of the present application, the infrared temperature measurement module, as shown in FIG. 1 and FIG. 2 , the infrared temperature measurement module 100 includes: a hollow-shaped lens barrel 12 disposed at the front end of the lens barrel 12 , the front cover 11 for installing the convex lens 10, the convex lens 10 installed on the lens barrel 12 through the front cover 11, and the infrared temperature sensor 110 arranged at the rear end of the lens barrel 12; the convex lens 10 and all The infrared temperature sensor 110 is packaged in the cavity of the lens barrel 12 . In this way, the infrared temperature measurement module 100 of this embodiment is packaged into an infrared temperature measurement module 100 with a lens barrel 12, which can be installed in various temperature measurement equipment for temperature measurement, for example, it can be installed in a forehead temperature gun, or Installed on the security door frame.

In a further embodiment, as shown in FIG. 1, the convex lens 10, the infrared temperature sensor 110, and the PCB circuit board 14 can be integrated and installed in the same package shell; it can be easily and conveniently installed in various measuring instruments. temperature measurement equipment.

In an embodiment, in order to further improve the measurement effect, the infrared temperature measurement module described in this embodiment adopts the inner side wall of the lens barrel 12 to be provided with the zigzag-shaped reflective surface, and the zigzag-shaped reflective surface is provided. It can achieve the effect of mirror surface, realize the function of reflecting light, have a further concentrating function, improve the measurement accuracy, and extend the measurement distance. In a preferred embodiment, the inner side wall of the lens barrel 12 is set as a horn-shaped sawtooth-shaped reflective surface (121 shown in FIG. 4 ) from the outside to the inside; the surface area of the inner wall of the sensor can be increased, the thermal resistance can be reduced, and the heat dissipation, The cooling process time is short; the light incident into the lens barrel with a certain oblique angle can be concentrated on the infrared temperature sensor 110 by reflection, and can well "lock" the light, improve the measurement accuracy, and further extend the measurement distance. The principle of light reflection expands the range of light collected by the sensor, making the measurement range of the temperature measurement module wider and the temperature measurement module more widely used.

Further, in this embodiment, the lens barrel 12 is a copper lens barrel, and the heat dissipation effect of the copper lens barrel is better. The front cover 11 is screwed on the copper lens barrel, and the convex lens 10 can be replaced by movably rotating the front cover 11 . In this way, it can be realized that the convex lens 10 can be easily replaced as required, which is convenient for maintenance and debugging.

In one embodiment, the + 10% deviation is set when the distance between the infrared temperature sensor 110 and the convex lens 10 is equal to the focal length of the convex lens 10 . For example, as shown in Figure 3, for example, the focal length of the convex lens (10) used is 11.07mm, and the distance between the sensor (110) and the convex lens (10) is 12mm, which can achieve the best extension of the measurement distance, and can also maintain accurate measurement results. That is, in the application examples of the present invention,

In a further embodiment, the present application adopts the convex lens 10 to be a silicon convex lens made of silicon or a germanium convex lens made of germanium; it is necessary to use a silicon convex lens with a long focal length and high transmittance, and a silicon convex lens is used, which can transmit The infrared rays are more than 80%, so that the temperature measuring device of the present application can maintain a good extended distance measurement effect. Similarly, the germanium convex lens can also ensure the effect of long-distance temperature measurement. Preferably, the reflective surface adopts a smooth mirror surface to realize the reflective surface of a copper piece that reflects light, not only has the function of reflecting light and collecting light, but also facilitates heat dissipation, enhances heat dissipation, and shortens the cooling process time.

In the present application, the material of the convex lens must be silicon or germanium (high light transmittance and reduced attenuation), that is, a silicon convex lens or a germanium convex lens, and a Fresnel lens is also not acceptable, which does not meet the requirements.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , when the infrared sensor module of the present application is assembled, the material of the convex lens 10 is determined first. The convex lens 10 of the present application is made of a silicon convex lens, which can transmit more than 80% of infrared rays. Then determine the material of the lens barrel 12. The lens barrel of the present application is made of a copper material lens barrel, which has good thermal conductivity and increases the heat dissipation of the infrared temperature sensor, so that the performance of the infrared temperature measurement module is more stable and the measurement data is more accurate; The principle calculates the distance between the infrared sensor 110 and the convex lens 10 (adjusted step by step within the convergence range), so as to determine the length of the lens barrel 12 .

The lighting principle of the convex lens 10 of the present application is shown in FIG. 2 , and the convex lens of the present application has a converging effect on light. If the object is at different positions in front of the convex lens 10 , the light emitted by the object will have different convergence conditions after passing through the convex lens, that is, the imaging properties of the object will also be different. As shown in FIG. 2 , a convex lens 10 is placed in front of the infrared temperature sensor 110 in the present application, so that the light emitted from the rear focus F1 of the mirror becomes a beam of parallel light, so that the infrared rays emitted by the infrared temperature sensor 110 are more concentrated. The intensity of the central light intensity and the brightness of the spot are increased, and the light extraction efficiency is high. The measurement accuracy of the sensor has been improved, and the measurement distance can be expanded to 50-100cm.

In a further embodiment, the present application adopts the front end of the PCB circuit board 14 to install the infrared temperature measurement module 100, and the rear end is provided with a slot base 15 that can be plugged with cables; Devices that require temperature display or processing, such as forehead thermometers.

In a further embodiment, as shown in FIG. 5 , the outside of the infrared temperature measurement module is a square cover structure 9 , and the front end of the square cover structure 9 is provided with a circular hole 91 corresponding to the position of the convex lens 10 . As shown in 1 , the infrared temperature measurement module 100 is installed at the front end, and the PCB circuit board 14 with the slot base 15 at the rear end is installed in the square cover structure 9 . In this way, the infrared temperature measurement module can be encapsulated in the square cover structure 9 as a whole to form a modular packaging structure, which can be easily installed and embedded in other devices that require temperature measurement, such as a forehead temperature gun or a security inspection door.

In another embodiment, the infrared temperature measurement module can adjust the distance between the infrared temperature sensor 110 and the convex lens 10 through a fine-tuning mechanism, for example, an adjustment screw is used. The infrared temperature sensor 110 is movably installed on the top to adjust the distance between the infrared temperature sensor 110 and the convex lens 10, and the adjustable distance range is greater than 1 times the focal length of the convex lens 10 and less than twice the focal length . In this way, the infrared temperature measurement module of the present patent application can perform the measurement accuracy check in time. In some places that require a longer distance temperature measurement, it can be achieved by adjusting the distance between the infrared temperature sensor 110 and the convex lens 10 in time. More accurate measurement provides convenience for users.

Based on the above embodiment, the present application also provides a non-contact infrared temperature measurement device. The non-contact infrared temperature measurement device in this embodiment includes a display screen, and the infrared temperature measurement module described in the above embodiment, the infrared temperature measurement device The temperature module is arranged on the non-contact infrared temperature measuring device. The non-contact infrared temperature measurement device in this embodiment may be an infrared forehead temperature gun or a security inspection door installed with the above-mentioned infrared temperature measurement module. Compared with the infrared forehead temperature gun in the prior art, the measurement distance is increased, the measurement distance can reach 50-100cm, the detection efficiency is improved, and the temperature measurement module is more widely used, so as to meet the measurement requirements of different environments, and can Avoid contact with infection.

Based on the above embodiments, the present application also provides an infrared temperature measurement method of the infrared temperature measurement module according to any one of the above, including the following steps:

S100, through the convex lens 10 encapsulated in front of the infrared temperature sensor 110, refracting and converging the infrared rays radiated by the measured target to the infrared temperature sensor 110;

S200, the infrared temperature sensor 110 collects the temperature information of the measured target according to the infrared rays gathered by the convex lens 10 and the infrared rays reflected by the inner wall of the cavity;

S300 , the PCB circuit board 14 connected to the infrared temperature sensor 110 processes the temperature information of the measured target collected by the infrared temperature sensor 110 , and outputs temperature value data after performing compensation and calibration.

In this embodiment, a convex lens is added on the infrared measuring module, and the measuring range and measuring accuracy of the infrared temperature sensor can be improved through the focusing performance of the convex lens, and the measuring distance can be increased. The measuring distance can reach 50-100 cm, which improves the detection efficiency. , making the temperature measurement module more widely used, so as to meet the measurement requirements of different environments, and to avoid contact infection.

The beneficial effects of the present application are: the infrared temperature measurement module, the infrared temperature measurement device and the infrared temperature measurement method provided by the present application, because the infrared temperature measurement module 100 is adopted, the infrared temperature measurement module 100 includes An infrared temperature sensor for measuring target temperature information, and a convex lens for refracting and converging the infrared radiation returned by the measured target radiation to the infrared temperature sensor, the convex lens is arranged in front of the infrared temperature sensor, and the convex lens is packaged with the infrared temperature sensor. In the same cavity, and the convex lens and the center line of the infrared temperature sensor are on the same horizontal line; the one connected to the infrared temperature sensor is used to process the temperature information of the measured target collected by the infrared temperature sensor, and perform compensation and calibration. The PCB circuit board 14 for outputting temperature value data; the distance between the infrared temperature sensor and the convex lens is greater than or equal to 1 times the focal length of the convex lens and less than twice the focal length of the convex lens; package the convex lens and the convex lens The inner side wall of the cavity of the infrared temperature sensor is provided with a reflective surface. In the present application, a convex lens is added to the infrared measuring module. The focusing performance of the convex lens can improve the measuring range and measuring accuracy of the infrared temperature sensor, increase the measuring distance, and the measuring distance can reach 50-100 cm. The temperature module is more widely used, so as to meet the measurement requirements of different environments, and to avoid contact infection. In the present application, the inner side wall of the cavity encapsulating the convex lens and the infrared temperature sensor is provided with a reflective surface, and the reflective surface is a zigzag reflective surface (121 as shown in FIG. 4 ); The measurement is more accurate under the condition that the measurement distance is guaranteed to be extended; the infrared measurement module of the present application can be installed on the temperature measuring gun, which can be used for individuals, and is also suitable for the environment where the flow of people is large and the temperature needs to be measured, and the structure is simple and easy to install. convenient.

It should be understood that the application of the present application is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above descriptions, and all these improvements and transformations should belong to the protection scope of the appended claims of the present application.

Claims (10)

1. an infrared temperature measurement module, is characterized in that, comprises: Infrared temperature measurement module, the infrared temperature measurement module includes a convex lens for refracting and converging infrared rays radiated back by the measured target to the infrared temperature sensor, and a convex lens for collecting the temperature information of the measured target according to the infrared rays refracted and concentrated by the convex lens. Infrared temperature sensor, the convex lens is arranged in front of the infrared temperature sensor, the convex lens and the infrared temperature sensor are packaged in the same cavity, and the center line of the convex lens and the infrared temperature sensor are on the same horizontal line; A PCB circuit board connected to the infrared temperature sensor for processing the temperature information of the measured target collected by the infrared temperature sensor, and outputting temperature value data after compensation and calibration; The distance between the infrared temperature sensor and the convex lens is greater than or equal to 1 times the focal length of the convex lens and less than twice the focal length of the convex lens; The inner side wall of the cavity encapsulating the convex lens and the infrared temperature sensor is provided with a reflective surface; the reflective surface is a zigzag reflective surface. 2 . The infrared temperature measurement module according to claim 1 , wherein the infrared temperature measurement module comprises: a lens barrel in a hollow shape, which is arranged at the front end of the lens barrel, and is used for installing a convex lens. Covering the convex lens mounted on the lens barrel, and the infrared temperature sensor disposed at the rear end of the lens barrel; the convex lens and the infrared temperature sensor are packaged in the cavity of the lens barrel. 3 . The infrared temperature measurement module according to claim 2 , wherein the inner side wall of the lens barrel is provided with the zigzag-shaped reflective surface, or the inner side wall of the lens barrel is arranged in a horn shape from the outside to the inside. 4 . zig-zag reflective surface; The lens barrel is a copper lens barrel, the front cover is screwed on the copper lens barrel, and the convex lens can be replaced by movably rotating the front cover. 4. The infrared temperature measurement module according to claim 1, wherein when the distance between the infrared temperature sensor and the convex lens is equal to the focal length of the convex lens, a + 10% deviation is set. 5 . The infrared temperature measurement module according to claim 1 , wherein the focal length of the convex lens is 11.07 mm, the distance between the infrared temperature sensor and the convex lens is 12 mm, and the length of the lens barrel is 18.6 mm. 6 . 6. The infrared temperature measurement module according to claim 1, wherein the convex lens, the infrared temperature sensor, and the PCB circuit board are integrated and installed in the same package shell; The convex lens is a silicon convex lens made of silicon or a germanium convex lens made of germanium; the reflecting surface adopts a smooth mirror surface to realize the reflecting surface of a copper piece that reflects light. 7. The infrared temperature measurement module according to claim 1, wherein the infrared temperature measurement module is installed at the front end of the PCB circuit board, and the rear end is provided with a slot base that can be plugged into a cable; The outside of the infrared temperature measurement module is a square cover structure, the front end of the square cover structure is provided with a circular hole corresponding to the position of the convex lens, the front end is installed with the infrared temperature measurement module, and the rear end is provided with a PCB with a slot base The circuit board is installed in the square cover structure. 8 . The infrared temperature measurement module according to claim 1 , wherein the distance between the infrared temperature sensor and the convex lens can be adjusted by a fine-tuning mechanism, and the adjustable distance range is greater than that of the convex lens. 9 . 1x focal length and less than twice the focal length. 9. A non-contact infrared temperature measurement device, characterized in that it comprises a display screen, and the infrared temperature measurement module according to any one of claims 1-8, wherein the infrared temperature measurement module is arranged on a non-contact infrared temperature measurement device. temperature device. 10. An infrared temperature measurement method of an infrared temperature measurement module according to any one of claims 1-8, characterized in that, comprising the steps of: Through the convex lens encapsulated in front of the infrared temperature sensor, the infrared rays radiated by the measured target are refracted and converged to the infrared temperature sensor; The infrared temperature sensor collects the temperature information of the measured target according to the infrared rays gathered by the convex lens and the infrared rays reflected by the inner wall of the cavity; The PCB circuit board connected with the infrared temperature sensor processes the temperature information of the measured target collected by the infrared temperature sensor, and outputs the temperature value data after compensation and calibration.

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