Object distance ratio measuring device of infrared temperature measuring sensor

Abstract

The utility model relates to an object distance ratio measuring device of an infrared temperature measuring sensor, which comprises a horizontal guide rail, scales are arranged on the horizontal guide rail, two sets of horizontal moving slide blocks capable of freely sliding are arranged on the horizontal guide rail, and a larger plane is arranged above the horizontal moving slide blocks. The vertical guide rail is installed on the fixing piece through a screw, the fixing piece is in an L shape, the bottom end of the fixing piece is connected with the horizontal moving sliding block, and the vertical section of the fixing piece is connected with the vertical guide rail. And the probe is connected with the vertical guide rail through a vertical moving slide block and can detect the radiation source to realize temperature measurement. And the blackbody radiation source is installed on the horizontal moving sliding block and located at the end, with the small scales, of the horizontal guide rail, the radiation surface of the blackbody radiation source is perpendicular to the horizontal guide rail, and the probe directly faces the blackbody radiation source. According to the structure, the measurement precision is improved, and the influence of ambient light on the measurement result can be reduced, so that the measurement stability and reliability are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature detection, in particular to a device for measuring the object distance ratio of an infrared temperature sensor. Background Art

[0002] In recent years, infrared thermopile sensors have shown broad application prospects in the fields of industrial automation, temperature monitoring, security monitoring, etc. Traditional infrared thermopile sensors mainly adjust the focal length to measure target objects at different distances. However, this method may be affected by ambient light interference or the inability to precisely control the size of the measurement area.

[0003] To address the limitations of traditional methods, researchers have proposed using the object distance ratio to optimize the measurement performance of infrared thermopile sensors. The object distance ratio refers to the ratio of the sensor's measurement distance to the surface diameter of the target object, which affects the measurement accuracy and stability of the sensor at different distances and target sizes.

[0004] Specifically, the object distance ratio test technology requires experimental and data analysis to determine the optimal focal length setting of the sensor, ensuring that at different measurement distances, the sensor can accurately capture the infrared radiation of the target object and convert it into reliable temperature readings. This technology not only improves the measurement accuracy of the sensor but also reduces the impact of ambient light on the measurement results, thus ensuring the stability and reliability of the measurement.

[0005] Currently, the research on object distance ratio testing is difficult to meet the requirements of different application scenarios. Especially in the practical applications of industrial production and high-precision measurement fields, the further development of object distance ratio testing technology still has important significance. Summary of the Invention

[0006] The purpose of the utility model is to provide a device for measuring the object distance ratio of an infrared temperature sensor to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the utility model is realized by the following technical measures: An object distance ratio measuring device for an infrared temperature sensor, which includes a horizontal guide rail with scales, and two sets of horizontally movable sliders that can slide freely are arranged on the horizontal guide rail. Above the horizontally movable sliders is a relatively large plane.

[0008] A vertical guide rail is installed on a fixing member through screws. The fixing member is L-shaped, with its bottom end connected to the horizontally movable slider and its vertical section connected to the vertical guide rail.

[0009] A probe is connected to the vertical guide rail through a vertically movable slider and can detect a radiation source to achieve temperature measurement.

[0010] A blackbody radiation source, which is installed on the horizontal moving slider, located at the end with a smaller scale of the horizontal guide rail. Its radiation surface is perpendicular to the horizontal guide rail, and the probe is directly facing the blackbody radiation source.

[0011] As an improvement of the present invention, the horizontal moving slider is provided with a conveyor belt clamping buckle for installing and fixing the conveyor belt, and the conveyor belt is rotated by a conveyor motor. The purpose of choosing this design is to fix the conveyor belt on the horizontal moving slider. Driven by the conveyor motor, the horizontal moving slider can move left and right, thereby driving the blackbody radiation source fixed on it to move left and right.

[0012] As an improvement of the present invention, the horizontal moving slider has the same structure as the vertical moving slider. Its bottom is provided with a bayonet, and rubber guide wheels are arranged on the edge of the bayonet. A spirit level for judging whether the vertical moving slider is horizontally placed is arranged on the top of the vertical moving slider. The purpose of choosing this design is that the rubber guide wheels in the horizontal moving slider can reduce the friction and wear of mechanical components, thereby improving the stability and accuracy of movement.

[0013] As an improvement of the present invention, the probe is an infrared probe with a filter. The purpose of choosing this design is to exclude the interference of useless light on the measurement.

[0014] As an improvement of the present invention, the outer shell of the blackbody radiation source is a square metal shell. A blackbody radiation surface is arranged on one side of the metal shell, and its radiation surface is a circle with a diameter of 15 cm. The purpose of choosing this design is that the blackbody radiation surface has a uniform surface temperature and can be accurately controlled, overcoming the problem that it is difficult to take the average value due to a large temperature difference in traditional object distance ratio measurement. A circle with a diameter of 15 cm is relatively appropriate.

[0015] The present invention has the following advantages compared with the prior art:

[0016] 1. Since the present invention uses a blackbody radiation source, the surface temperature is uniform and can be accurately controlled, overcoming the problem that it is difficult to take the average value due to a large temperature difference in traditional object distance ratio measurement, realizing the determination of the object size, and reducing the problem of repeatedly measuring the object size in traditional temperature measurement.

[0017] 2. Since the guide rail of the present invention has a scale and can slide freely, it overcomes the problems of cumbersome steps and large errors in traditional distance measurement, and improves the accuracy of distance measurement.

[0018] 3. Since the present invention is provided with a spirit level, it overcomes the cumbersome steps of judging whether the device is horizontal in traditional measurement, realizes precise installation during the installation process, and has high operation simplicity.

[0019] 4. Since the infrared probe of the present invention is equipped with a filter, it excludes the interference of useless light on the measurement. Since the temperature of the blackbody radiation source is uniform and the size is determined, the accurate calibration of the object temperature is achieved, reducing the existence of errors and improving the stability of the measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] In the drawings:

[0022] Figure 1 is a perspective view of the object distance ratio measuring device of the infrared temperature measuring sensor described in the present utility model.

[0023] Figure 2 is a perspective view of the horizontal guide rail part described in the present utility model.

[0024] Figure 3 is a perspective view of the horizontal moving slider described in the present utility model.

[0025] Description of reference numerals: 1, horizontal guide rail; 2, horizontal moving slider; 3, vertical guide rail; 4, fixing member; 5, probe; 6, vertical moving slider; 7, blackbody radiation source; 8, conveyor belt crimping buckle; 9, conveyor motor; 10, rubber guide wheel; 11, level gauge; 12, blackbody radiation surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following describes the preferred embodiments of the present utility model with reference to the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model and are not used to limit the present utility model.

[0027] Embodiment 1

[0028] Please refer to Figure 1 -3. A kind of object distance ratio measuring device of an infrared temperature measuring sensor provided in this embodiment includes a horizontal guide rail 1. The horizontal guide rail 1 is provided with scales, with one end value being 40 cm and the other end value being 190 cm. Inside the guide rail is a conveyor belt. The innermost layer of the conveyor belt is rows of rubber teeth, the middle layer is a sheet of steel wire ropes joined together, and the outer layer is a flat plastic belt. The horizontal moving slider 2 is fixed on the conveyor belt and slides along the guide rail. There are two sets of horizontally movable sliders 2 that can slide freely on the horizontal guide rail 1. Above the horizontal moving slider 2 is a relatively large plane, which is used to install the blackbody radiation source 7, and the other set of horizontal moving sliders 2 is used to install the fixing member 4.

[0029] Vertical guide rail 3, the vertical guide rail 3 is installed on the fixing part 4 by screws, the fixing part 4 is L-shaped, its bottom end is connected to the horizontal moving slider 2, and its vertical section is connected to the vertical guide rail 3. The scale value at the bottom of the vertical guide rail 3 is 80 cm, and the scale value at the top is 30 cm.

[0030] Probe 5, the probe 5 is connected to the vertical guide rail 3 through the vertical moving slider 6, and can detect the radiation source to achieve temperature measurement. The core of the probe 5 consists of an infrared sensor, and judges the temperature of the radiation source by processing the received infrared spectrum signal. The probe is facing the center point of the blackbody radiation surface, and the temperature value is the average temperature of the blackbody radiation source 7; the outside of the blackbody radiation source 7 is a metal shell with a square opening, and near the opening end of the shell is a blackbody, and its coating can absorb most visible light, reducing the measurement error caused by external light.

[0031] Blackbody radiation source 7, the blackbody radiation source 7 is installed on the horizontal moving slider 2, located at the end with a smaller scale on the horizontal guide rail 1, its radiation surface is a perfect circle with a diameter of 15 cm, perpendicular to the horizontal guide rail 1, and the probe 5 is facing the blackbody radiation source 7.

[0032] In this embodiment, please refer to Figure 3 , the horizontal moving slider 2 is provided with a conveyor belt pressing buckle 8, and the conveyor belt pressing buckle 8 is used to install and fix the conveyor belt, and the conveyor belt is rotated by the conveyor motor 9. During installation, the conveyor belt is fixed on the horizontal moving slider 2, and driven by the conveyor motor 9, the horizontal moving slider 2 can move left and right, thereby driving the blackbody radiation source 7 fixed on it to move left and right.

[0033] Further, the horizontal moving slider 2 and the vertical moving slider 6 have the same structure, its bottom is provided with a bayonet, and the edge of the bayonet is provided with a rubber guide wheel 10, and the top of the vertical moving slider 6 is provided with a spirit level 11 for judging whether the vertical moving slider 6 is placed horizontally. The rubber guide wheel 10 in the horizontal moving slider 2 can reduce the friction and wear of mechanical parts, thereby improving the stability and accuracy of movement. The spirit level 11 is a rectangular container, filled with liquid inside, there is an air bubble in the container, and there are two scale lines in the middle of the container for judging whether the slider is placed horizontally.

[0034] Further, the probe 5 is an infrared probe 5, with a filter. It can exclude the interference of useless light on the measurement.

[0035] Further, the probe 5 is fixed to the vertical guide rail 3 through the probe 5 fixing part 4. The outer end of the probe 5 fixing part 4 is provided with a bayonet for fixing with the probe 5, and the other side of the probe 5 fixing part 4 is fixed to the vertical guide rail 3.

[0036] Furthermore, the housing of the blackbody radiation source 7 is a square-shaped metal housing, and a blackbody radiation surface 12 is provided on one side of the metal housing. Since the surface temperature of the blackbody radiation surface 12 is uniform and can be precisely controlled, it provides a solution for the standardization of infrared temperature measurement.

[0037] In the infrared temperature measurement sensor object distance ratio measurement device provided in this embodiment, they are connected as follows. The blackbody radiation source 7 is fixed on the horizontal moving slider 2 ( Figure 1 in which the two are separated to visually see the appearance of the horizontal moving slider 2). The horizontal moving slider 2 is movably fixed on the horizontal guide rail 1. A fixing member 4 is installed on another set of horizontal moving sliders 2. A vertical guide rail 3 is installed on the other side of the fixing member 4. A vertical moving slider 6 is provided on the vertical guide rail 3. A spirit level 11 is provided above the side of the vertical moving slider 6. A probe 5 is provided on the front surface of the vertical moving slider 6.

[0038] The working principle of the infrared temperature measurement sensor object distance ratio measurement device provided in this embodiment is as follows: The object distance ratio measurement device calculates the ratio of the distance when the temperature of the infrared temperature measurement sensor decays to 90% to the surface source diameter of the blackbody radiation source 7. First, set the temperature of the blackbody to 100 °C. When the temperature indication of the infrared temperature measurement sensor is 100 °C, move the horizontal moving slider 2 to adjust the distance between the blackbody radiation source 7 and the infrared temperature measurement sensor. When the temperature decays to 90% of the original, read the scale of the horizontal guide rail 1 to obtain the distance between the infrared temperature measurement sensor and the blackbody radiation source when the temperature decays by 10%. Take the ratio of this distance to the diameter of the blackbody radiation to obtain the object distance ratio of the infrared temperature measurement sensor.

[0039] Compared with the prior art, its beneficial effects are as follows:

[0040] 1. Since the blackbody radiation source 7 is adopted in the present invention, the surface temperature is uniform and can be precisely controlled, overcoming the problem that it is difficult to take the average value due to the large temperature difference in traditional object distance ratio measurement, realizing the determination of the object size, and reducing the problem of repeatedly measuring the object size in traditional temperature measurement.

[0041] 2. Since the guide rail of the present invention has a scale and can slide freely, it overcomes the problems of cumbersome steps and large errors in traditional distance measurement, and improves the accuracy of distance measurement.

[0042] 3. Since the present invention is equipped with a spirit level 11, it overcomes the cumbersome steps of judging whether the device is horizontal in traditional measurement, realizes precise installation during the installation process, and has high operational simplicity.

[0043] 4. Since the infrared probe 5 of the present invention is equipped with a filter, it excludes the interference of useless light on the measurement. Since the blackbody radiation source 7 has a uniform temperature and a determined size, it realizes the accurate calibration of the object temperature, reduces the existence of errors, and improves the stability of the measurement result.

[0044] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0045] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An infrared temperature sensor object distance ratio measuring device, comprising a horizontal guide rail (1), characterized in that: The horizontal guide rail (1) has scales, and two sets of freely slidable horizontal movable sliders (2) are arranged on the horizontal guide rail (1), and the top of the horizontal movable sliders (2) is in the shape of a plane; A vertical guide rail (3), wherein the vertical guide rail (3) is mounted on a fixing member (4) by means of screws, wherein the fixing member (4) is L-shaped, wherein the bottom end of the fixing member is connected to the horizontal movable slider (2), and the vertical section of the fixing member is connected to the vertical guide rail (3); A probe (5), wherein the probe (5) is connected to the vertical guide rail (3) via a vertically movable slider (6) and can detect a radiation source to achieve temperature measurement; A blackbody radiation source (7) is installed on the horizontal movable slider (2) and is located at the end of the horizontal guide rail (1) with a smaller scale, with its radiation surface perpendicular to the horizontal guide rail (1), and the probe (5) is directly opposite to the blackbody radiation source (7).

2. The infrared temperature sensor object distance ratio measuring device according to claim 1 is characterized in that: The horizontal movable slider (2) is provided with a conveyor belt crimping buckle (8), and the conveyor belt crimping buckle (8) is used to install and fix the conveyor belt, and the conveyor belt is rotated by a conveying motor (9).

3. The infrared temperature sensor object distance ratio measuring device according to claim 1 is characterized in that: The horizontal movable slider (2) has the same structure as the vertical movable slider (6), and has a bayonet at the bottom, a rubber guide wheel (10) is arranged at the edge of the bayonet, and a level (11) is arranged at the top of the vertical movable slider (6) for judging whether the vertical movable slider (6) is placed horizontally.

4. The infrared temperature sensor object distance ratio measuring device according to claim 1 is characterized in that: The shell of the black body radiation source (7) is a square metal shell, and a black body radiation surface (12) is arranged on one side of the metal shell, and the radiation surface is a circle with a diameter of 15 cm.

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