Sensor calibration device

Abstract

The utility model discloses a sensor calibration device. The sensor calibration device comprises a feeding mechanism, a pre-cooling mechanism, a calibration mechanism and a material distribution mechanism which are sequentially arranged along the conveying direction of a conveying mechanism, the sensor bracket is arranged on the conveyor belt; the feeding driving mechanism grabs the to-be-detected sensor in the tray and places the to-be-detected sensor on the sensor bracket; the pre-cooling mechanism comprises a top cover and a gas conveying mechanism, the top cover is arranged on the conveying mechanism, and the gas conveying mechanism communicates with the top cover through a gas conveying pipe; the data acquisition board is arranged below the conveying mechanism, the black body mechanism and the shutter mechanism are sequentially arranged above the conveying mechanism, and the shutter mechanism is arranged on one side close to the conveying mechanism; the water-cooling jig mechanism comprises a water-cooling jig and a water-cooling jig driving mechanism; and the water-cooling jig is connected with the sensor bracket under the driving of the water-cooling jig driving mechanism. The embodiment of the utility model can improve the calibration efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to a sensor calibration device. Background Technology

[0002] Infrared temperature sensors are non-contact temperature measurement tools with features such as fast response and low power consumption, and are widely used in medical, industrial, and home applications.

[0003] Before leaving the factory, manufacturers need to calibrate infrared temperature sensors to reduce measurement errors during use. Traditional calibration methods require manual calibration, which is time-consuming and labor-intensive, and also introduces human error, making it difficult to guarantee product consistency and measurement accuracy.

[0004] Therefore, existing sensor calibration methods suffer from low calibration efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a sensor calibration device that addresses the problem of low calibration efficiency in existing sensor calibration methods.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sensor calibration device is provided, comprising: a feeding mechanism, a precooling mechanism, a calibration mechanism, a dispensing mechanism, and a conveying mechanism; wherein the feeding mechanism, the precooling mechanism, the calibration mechanism, and the dispensing mechanism are arranged sequentially along the conveying direction of the conveying mechanism;

[0007] The conveying mechanism includes a sensor bracket, a conveyor belt, and a conveying drive mechanism that is driven by the conveyor belt. The sensor bracket is mounted on the conveyor belt.

[0008] The feeding mechanism includes a material tray and a feeding drive mechanism. The feeding drive mechanism grabs the sensor to be tested in the material tray and places it on the sensor bracket.

[0009] The precooling mechanism includes a top cover and a gas conveying mechanism. The top cover is mounted on the conveying mechanism, and the gas conveying mechanism is connected to the top cover through a gas conveying pipe.

[0010] The calibration mechanism includes a water-cooled fixture mechanism, a data acquisition board, a blackbody mechanism, and a shutter mechanism; wherein, the data acquisition board is located below the conveying mechanism, the blackbody mechanism and the shutter mechanism are sequentially located above the conveying mechanism, and the shutter mechanism is located on the side closer to the conveying mechanism.

[0011] The water-cooled fixture mechanism includes a water-cooled fixture and a water-cooled fixture driving mechanism. The water-cooled fixture is connected to the sensor bracket under the drive of the water-cooled fixture driving mechanism.

[0012] Furthermore, the sensor bracket is provided with multiple sensor through holes, each of which is adapted to the sensor under test.

[0013] Furthermore, the sensor bracket includes a flat plate and a boss, the boss being disposed above the flat plate, and the sensor through hole being a through hole penetrating the flat plate and the boss.

[0014] Furthermore, the plate is provided with connection holes on both sides, and the plate is connected to the conveying mechanism through the connection holes.

[0015] Furthermore, positioning holes are provided on the periphery of the plate.

[0016] Furthermore, the water-cooled fixture has an embedding groove on one side facing the sensor bracket that matches the boss.

[0017] Furthermore, the bottom surface of the embedding groove is provided with a plurality of water-cooled fixture through holes, and the water-cooled fixture through holes correspond one-to-one with the sensor through holes.

[0018] Furthermore, the data acquisition board is provided with a signal interface and multiple pins, and the data acquisition board is electrically connected to the sensor under test through the pins.

[0019] Furthermore, the blackbody mechanism includes a blackbody driving mechanism and at least one blackbody, wherein the blackbody is connected to the blackbody driving mechanism in a transmission manner.

[0020] Furthermore, the shutter mechanism includes a shutter and a shutter drive mechanism, with the shutter and the shutter drive mechanism being connected in a transmission connection.

[0021] This utility model discloses a sensor calibration device, which includes: a feeding mechanism, a precooling mechanism, a calibration mechanism, a dispensing mechanism, and a conveying mechanism; wherein, the feeding mechanism, the precooling mechanism, the calibration mechanism, and the dispensing mechanism are arranged sequentially along the conveying direction of the conveying mechanism; the conveying mechanism includes a sensor support, a conveyor belt, and a conveying drive mechanism connected to the conveyor belt, and the sensor support is disposed on the conveyor belt; the feeding mechanism includes a material tray and a feeding drive mechanism, the feeding drive mechanism grabs the sensor to be tested in the material tray and places it on the sensor support; The pre-cooling mechanism includes a top cover and a gas supply mechanism. The top cover is mounted on the conveying mechanism, and the gas supply mechanism is connected to the top cover via a gas supply pipe. The calibration mechanism includes a water-cooled fixture mechanism, a data acquisition board, a blackbody mechanism, and a shutter mechanism. The data acquisition board is positioned below the conveying mechanism, and the blackbody mechanism and the shutter mechanism are sequentially positioned above the conveying mechanism, with the shutter mechanism located on the side closest to the conveying mechanism. The water-cooled fixture mechanism includes a water-cooled fixture and a water-cooled fixture driving mechanism. The water-cooled fixture is connected to the sensor bracket under the drive of the water-cooled fixture driving mechanism. This embodiment of the invention can achieve accurate calibration of the infrared temperature sensor through the combined action of the feeding mechanism, pre-cooling mechanism, calibration mechanism, dispensing mechanism, and conveying mechanism, effectively reducing errors caused by human intervention and improving calibration efficiency and accuracy. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the first part of the sensor calibration device provided in an embodiment of this utility model;

[0024] Figure 2 A structural diagram of the sensor bracket provided in an embodiment of this utility model;

[0025] Figure 3 A schematic diagram of the second part of the sensor calibration device provided in the embodiments of this utility model;

[0026] Figure 4 A first structural diagram of the water-cooled fixture provided in an embodiment of this utility model;

[0027] Figure 5 A second structural diagram of the water-cooled metallurgical fixture provided in this embodiment of the utility model;

[0028] Figure 6 A schematic diagram of the third part of the sensor calibration device provided in the embodiments of this utility model;

[0029] Figure 7 A schematic diagram of the fourth part of the sensor calibration device provided in the embodiments of this utility model;

[0030] Figure 8 Partial structural diagram of the sensor calibration device provided in the embodiments of this utility model;

[0031] Figure 9 This is a schematic diagram of the calibration process of the sensor calibration device provided in an embodiment of the present invention.

[0032] The labels for the attached figures are as follows:

[0033] 10. Sensor bracket; 11. Sensor through hole; 12. Flat plate; 13. Boss; 14. Connecting hole; 15. Positioning hole; 20. Sensor under test; 30. Data acquisition board; 31. Signal interface; 32. Ejector pin; 40. Water-cooled fixture; 41. Embedded groove; 42. Water-cooled fixture through hole; 50. Blackbody; 60. Shutter. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0036] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0037] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0038] Please see Figure 1 , Figure 6 and Figure 7 , Figure 1 A schematic diagram of the first part of the sensor calibration device provided in an embodiment of this utility model; Figure 6 A schematic diagram of the third part of the sensor calibration device provided in the embodiments of this utility model; Figure 7 This is a schematic diagram of the fourth part of the sensor calibration device provided in an embodiment of the present invention. Figure 1 , Figure 6 and Figure 7 As shown, this utility model proposes a sensor calibration device, which includes: a feeding mechanism, a precooling mechanism, a calibration mechanism, a dispensing mechanism, and a conveying mechanism; wherein, the feeding mechanism, the precooling mechanism, the calibration mechanism, and the dispensing mechanism are arranged sequentially along the conveying direction of the conveying mechanism; the conveying mechanism includes a sensor support 10, a conveyor belt, and a conveying drive mechanism connected to the conveyor belt, and the sensor support 10 is disposed on the conveyor belt; the feeding mechanism includes a material tray and a feeding drive mechanism, the feeding drive mechanism grabs the sensor 20 to be tested in the material tray and places it on the sensor support 10; The precooling mechanism includes a top cover and a gas supply mechanism. The top cover is mounted on the conveying mechanism, and the gas supply mechanism is connected to the top cover via a gas supply pipe. The calibration mechanism includes a water-cooled fixture mechanism, a data acquisition board 30, a blackbody mechanism, and a shutter mechanism. The data acquisition board 30 is located below the conveying mechanism, and the blackbody mechanism and the shutter mechanism are sequentially located above the conveying mechanism. The shutter mechanism is located on the side closest to the conveying mechanism. The water-cooled fixture mechanism includes a water-cooled fixture 40 and a water-cooled fixture driving mechanism. The water-cooled fixture 40 is connected to the sensor bracket 10 under the drive of the water-cooled fixture driving mechanism.

[0039] In this embodiment, the sensor calibration device includes: a feeding mechanism, a pre-cooling mechanism, a calibration mechanism, a dispensing mechanism, and a conveying mechanism; wherein, the feeding mechanism, the pre-cooling mechanism, the calibration mechanism, and the dispensing mechanism are arranged sequentially along the conveying direction of the conveying mechanism; specifically, the sensor calibration device includes four areas: a feeding area, a pre-cooling area, a calibration area, and a dispensing area. The feeding mechanism is located in the feeding area to automatically feed the sensor 20 to be tested; the pre-cooling mechanism is located in the pre-cooling area to cool the sensor 20 to be tested, so that the temperature of the sensor 20 to be tested is always maintained within a preset temperature range, so that the temperature of the sensor 20 to be tested reaches the temperature required for the calibration operation as quickly as possible, thereby improving the sensor calibration efficiency; the calibration mechanism is located in the calibration area to automatically calibrate the sensor 20 to be tested at a constant temperature; the dispensing mechanism is located in the dispensing area to separate qualified products from defective products.

[0040] The specific workflow of the sensor calibration device is as follows:

[0041] S1. Using image recognition technology, the feeding drive mechanism grabs the sensor to be tested 20 in the material tray and places it on the sensor bracket 10; wherein, the sensor bracket 10 is used to fix / limit the sensor to be tested 20 to ensure that the position of the sensor to be tested 20 does not shift during the transmission process.

[0042] S2. The conveying drive mechanism drives the conveyor belt to rotate, thereby conveying the sensor bracket 10 and the sensor under test 20 on the sensor bracket 10 to the precooling zone. The precooling zone is equipped with the precooling mechanism, which includes a top cover and an air supply mechanism. The top cover is disposed on the conveying mechanism, and the air supply mechanism is connected to the top cover through an air supply pipe. The air supply mechanism outputs constant temperature air and delivers it to the top cover through the air supply pipe to maintain the constant temperature of the sensor under test 20 inside the top cover. Preferably, the output temperature of the air supply mechanism is 25°C.

[0043] S3. The pre-cooled sensor under test 20 is transported to the calibration area. At this time, the sensor under test 20 is electrically connected to the data acquisition board 30. The water-cooled fixture 40 moves under the drive of the water-cooled fixture driving mechanism to wrap around the sensor under test 20 so as to calibrate the sensor under test 20 under a stable ambient temperature. Preferably, the output temperature of the water-cooled fixture 40 is 25°C.

[0044] S4. When the blackbody mechanism moves directly above the sensor under test 20, the shutter mechanism is opened so that the infrared radiation energy emitted by the blackbody mechanism irradiates the sensor under test 20. The data acquisition board 30 acquires the signal generated by the sensor under test 20 after being irradiated by the infrared radiation energy, and sends the acquired signal to the signal processing unit so that the signal processing unit can calculate the signal according to a specific calculation method to obtain the calibration data corresponding to each sensor under test 20, and write each calibration data into the corresponding sensor under test 20 through the data acquisition board 30.

[0045] S5. The calibrated sensor 20 is conveyed to the sorting area so that the sorting mechanism can separate qualified products and defective products; wherein, the sensor that can write calibration data is determined to be a qualified product, and the sensor that cannot write calibration data is determined to be a defective product; specifically, the sorting mechanism includes a sorting drive mechanism, a first tray and a second tray; qualified products and defective products can be picked up and stacked by the sorting drive mechanism, with qualified products placed on the first tray and defective products placed on the second tray.

[0046] In one embodiment, such as Figures 1 to 3 As shown, the sensor bracket 10 is provided with a plurality of sensor through holes 11, and each sensor through hole 11 is adapted to the sensor 20 under test.

[0047] In this embodiment, the sensor bracket 10 is provided with a plurality of sensor through holes 11, each of which is adapted to the sensor under test 20, and the sensor bracket 10 can simultaneously fix / limit the plurality of sensors under test 20.

[0048] Each sensor under test 20 includes a sensor body and sensor pins. The sensor bracket 10 is provided with a sensor through hole 11 that allows the sensor pins to pass through. The sensor bracket 10 can fix / limit the sensor under test 20 through the sensor through hole 11 to ensure that the position of the sensor under test 20 does not shift during the transmission process.

[0049] In one embodiment, such as Figure 2 and Figure 3 As shown, the sensor bracket 10 includes a flat plate 12 and a boss 13. The boss 13 is disposed above the flat plate 12, and the sensor through hole 11 is a through hole that penetrates the flat plate 12 and the boss 13.

[0050] In this embodiment, the sensor bracket 10 includes a flat plate 12 and a boss 13. The boss 13 is disposed above the flat plate 12. The sensor through hole 11 is a through hole that passes through the flat plate 12 and the boss 13. The sensor bracket 10 can fix / limit the sensor under test 20 through the sensor through hole 11 to ensure that the position of the sensor under test 20 does not shift during the transmission process.

[0051] In one embodiment, such as Figure 2 As shown, the plate 12 has connection holes 14 on both sides, and the plate 12 is connected to the conveying mechanism through the connection holes 14.

[0052] In this embodiment, the plate 12 is provided with connection holes 14 on both sides, and the plate 12 is connected to the conveying mechanism through the connection holes 14 to ensure that the position of the sensor under test 20 does not shift during the conveying process.

[0053] In one embodiment, such as Figure 2 As shown, the plate 12 has positioning holes 15 on its periphery.

[0054] In this embodiment, the plate 12 is provided with positioning holes 15 on its periphery. When the sensor bracket 10 is transported to a preset designated position, the sensor bracket 10 can be positioned and fixed through the positioning holes 15 to ensure the normal operation of the sensor calibration device.

[0055] In one embodiment, such as Figure 1 , Figure 5 and Figure 6 As shown, the water-cooled fixture 40 has an embedding groove 41 that matches the boss 13 on one side facing the sensor bracket 10.

[0056] In this embodiment, the water-cooled fixture 40 has an embedding groove 41 on one side facing the sensor bracket 10 that is adapted to the boss 13. When the pre-cooled sensor under test 20 is transported to the designated position in the calibration area, the water-cooled fixture 40 moves under the drive of the water-cooled fixture driving mechanism to surround the sensor under test 20. At this time, the boss 13 is fitted into the embedding groove 41. By setting the embedding groove on the water-cooled fixture 40, it can be ensured that the sensor under test 20 is surrounded by the water-cooled fixture 40, so as to achieve calibration of the sensor under test 20 under a stable ambient temperature.

[0057] Specifically, the water-cooled fixture 40 is provided with a water inlet and a water outlet. External coolant can be introduced into the water-cooled fixture 40 through the water inlet and discharged through the water outlet, so as to realize the circulation of coolant and ensure that the sensor 20 under test is calibrated at a stable ambient temperature.

[0058] In one embodiment, such as Figures 1 to 6 As shown, a plurality of water-cooled fixture through holes 42 are provided on the bottom surface of the embedding groove 41, and the water-cooled fixture through holes 42 correspond one-to-one with the sensor through holes 11.

[0059] In this embodiment, a plurality of water-cooled fixture through holes 42 are provided on the bottom surface of the embedding groove 41. The water-cooled fixture through holes 42 correspond one-to-one with the sensor through holes 11. The water-cooled fixture through holes 42 are adapted to the sensor under test 20. When the boss 13 is fitted into the embedding groove 41, the sensor under test is fitted into the water-cooled fixture through holes 42, ensuring that the sensor under test 20 is calibrated under a stable ambient temperature, thereby improving the accuracy of calibration.

[0060] Preferably, when the water-cooled fixture 40 surrounds the sensor under test 20, the height between the water-cooled fixture 40 and the sensor under test 20 is not greater than a preset height to avoid the water-cooled fixture 40 being within the field of view of the sensor under test 20, thus affecting the calibration of the sensor; wherein, the height between the water-cooled fixture 40 and the sensor under test 20 is the height between the upper surface of the water-cooled fixture 40 and the upper surface of the sensor under test 20.

[0061] In one embodiment, such as Figure 1As shown, the data acquisition board 30 is provided with a signal interface 31 and a plurality of pins 32, and the data acquisition board 30 is electrically connected to the sensor under test 20 through the pins 32.

[0062] In this embodiment, the data acquisition board 30 is provided with a signal interface 31 and multiple pins 32. The data acquisition board 30 is electrically connected to the sensor under test 20 through the pins 32. When the sensor under test 20 is transported to the calibration area, when the blackbody mechanism moves directly above the sensor under test 20, the shutter mechanism is opened so that the infrared radiation energy emitted by the blackbody mechanism irradiates the sensor under test 20. The data acquisition board 30 collects the signal generated by the sensor under test 20 after being irradiated by the infrared radiation energy, and sends the collected signal to the signal processing unit through the signal interface 31. The signal processing unit calculates the signal according to a specific calculation method to obtain the calibration data corresponding to each sensor under test 20, and writes each calibration data into the corresponding sensor under test 20 through the data acquisition board 30 to distinguish between qualified products and defective products, thereby achieving accurate calibration of the sensor under test 20.

[0063] In one embodiment, such as Figure 1 , Figure 7 and Figure 8 As shown, the blackbody mechanism includes a blackbody drive mechanism and at least one blackbody 50, and the blackbody 50 is connected to the blackbody drive mechanism in a transmission manner.

[0064] In this embodiment, the blackbody mechanism includes a blackbody driving mechanism and at least one blackbody 50. The blackbody 50 is connected to the blackbody driving mechanism. When the sensor under test 20 is transported to the calibration area, the blackbody 50 can be moved to directly above the sensor under test 20 under the drive of the blackbody driving mechanism to calibrate the sensor under test 20. The infrared radiation energy emitted by each blackbody 50 is different to improve the accuracy of calibration.

[0065] Preferably, when the sensor under test 20 is transported to the designated position in the calibration area, the field of view of the sensor under test 20 on the sensor support 10 needs to be covered within two-thirds of the diameter of the center of the radiating surface of the blackbody 50.

[0066] In one embodiment, such as Figure 7 and Figure 8 As shown, the shutter mechanism includes a shutter 60 and a shutter drive mechanism, with the shutter 60 being drive-connected to the shutter drive mechanism.

[0067] In this embodiment, the shutter mechanism includes a shutter 60 and a shutter drive mechanism. The shutter 60 is connected to the shutter drive mechanism, and the shutter 60 can move horizontally under the drive of the shutter drive mechanism to achieve automatic switching between open and closed states. Specifically, the shutter 60 includes a shielding layer and an exposure layer. When the shielding layer is located between the blackbody 50 and the sensor under test 20, the shutter 60 is in a closed state, and the infrared radiation energy emitted by the blackbody 50 is blocked. When the exposure layer is located between the blackbody 50 and the sensor under test 20, the shutter 60 is in an open state, and the infrared radiation energy emitted by the blackbody 50 irradiates the sensor under test 20. When the data acquisition board 30 does not acquire the signal from the sensor under test 20, the shutter 60 is controlled to enter a closed state to reduce the signal instability caused by the blackbody 50 irradiating the sensor under test 20 for a long time.

[0068] Furthermore, each blackbody 50 corresponds to one temperature point. By setting one or more blackbody 50s, one or more temperature points can be measured. Here, we take measuring three temperature points as an example (see details). Figure 9Step 1: The blackbody mechanism includes a blackbody driving mechanism, a first blackbody, a second blackbody, and a third blackbody. When the sensor under test 20 is transported to the designated position in the calibration area, the first blackbody, the second blackbody, and the third blackbody are controlled to descend to a preset height. Step 2: The first blackbody (the first temperature point) is controlled to move horizontally within the field of view of the sensor under test 20 through the blackbody driving mechanism (at this time, the effective radiation surface of the first blackbody completely covers the field of view of the sensor under test 20), and the shutter 60 is opened, so that the sensor under test 20 receives the signal from the first blackbody. The emitted infrared radiation energy generates a corresponding signal. The data acquisition board 30 reads the signal and uses it as the first signal data. After reading, the shutter 60 is closed. In the third step, the blackbody driving mechanism controls the second blackbody (the second temperature point) to move horizontally into the field of view of the sensor under test 20 (at this time, the effective radiation surface of the second blackbody completely covers the field of view of the sensor under test 20). The shutter 60 is then opened, and the sensor under test 20 receives the infrared radiation energy emitted by the second blackbody, generating a corresponding signal. The data acquisition board 30 reads the signal. The signal is read and used as the second signal data. After reading, the shutter 60 is closed. In the fourth step, the third blackbody (the second temperature point) is horizontally moved to the field of view of the sensor under test 20 by the blackbody driving mechanism (at this time, the effective radiation surface of the third blackbody completely covers the field of view of the sensor under test 20). The shutter 60 is opened, and the sensor under test 20 receives the infrared radiation energy emitted by the third blackbody and generates a corresponding signal. The data acquisition board 30 reads the signal and uses the read signal as the third signal data. After reading, the shutter 60 is closed. In the fifth step, the data acquisition board 30 sends the first signal data, the second signal data and the third signal data to the signal processing unit through the signal interface 31, so that the signal processing unit can calculate the first signal data, the second signal data and the third signal data according to a specific calculation method to obtain the calibration data corresponding to each sensor under test 20. Each calibration data is written into the corresponding sensor under test 20 through the data acquisition board 30 to distinguish between qualified products and defective products, so as to achieve accurate calibration of the sensor under test 20.

[0069] Furthermore, after the calibration of the sensor under test 20 on the current sensor bracket is completed, the next sensor bracket is transported to the calibration area through the conveying mechanism to accurately calibrate the sensor under test 20 set on the sensor bracket.

[0070] This utility model discloses a sensor calibration device, which includes: a feeding mechanism, a precooling mechanism, a calibration mechanism, a dispensing mechanism, and a conveying mechanism; wherein, the feeding mechanism, the precooling mechanism, the calibration mechanism, and the dispensing mechanism are arranged sequentially along the conveying direction of the conveying mechanism; the conveying mechanism includes a sensor support, a conveyor belt, and a conveying drive mechanism connected to the conveyor belt, and the sensor support is disposed on the conveyor belt; the feeding mechanism includes a material tray and a feeding drive mechanism, the feeding drive mechanism grabs the sensor to be tested in the material tray and places it on the sensor support; The pre-cooling mechanism includes a top cover and a gas supply mechanism. The top cover is mounted on the conveying mechanism, and the gas supply mechanism is connected to the top cover via a gas supply pipe. The calibration mechanism includes a water-cooled fixture mechanism, a data acquisition board, a blackbody mechanism, and a shutter mechanism. The data acquisition board is positioned below the conveying mechanism, and the blackbody mechanism and the shutter mechanism are sequentially positioned above the conveying mechanism, with the shutter mechanism located on the side closest to the conveying mechanism. The water-cooled fixture mechanism includes a water-cooled fixture and a water-cooled fixture driving mechanism. The water-cooled fixture is connected to the sensor bracket under the drive of the water-cooled fixture driving mechanism. This embodiment of the invention can achieve accurate calibration of the infrared temperature sensor through the combined action of the feeding mechanism, pre-cooling mechanism, calibration mechanism, dispensing mechanism, and conveying mechanism, effectively reducing errors caused by human intervention and improving calibration efficiency and accuracy.

[0071] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sensor calibration device, characterized in that, The sensor calibration device includes: a feeding mechanism, a precooling mechanism, a calibration mechanism, a dispensing mechanism, and a conveying mechanism; wherein the feeding mechanism, the precooling mechanism, the calibration mechanism, and the dispensing mechanism are arranged sequentially along the conveying direction of the conveying mechanism; The conveying mechanism includes a sensor bracket, a conveyor belt, and a conveying drive mechanism that is driven by the conveyor belt. The sensor bracket is mounted on the conveyor belt. The feeding mechanism includes a material tray and a feeding drive mechanism. The feeding drive mechanism grabs the sensor to be tested in the material tray and places it on the sensor bracket. The precooling mechanism includes a top cover and a gas conveying mechanism. The top cover is mounted on the conveying mechanism, and the gas conveying mechanism is connected to the top cover through a gas conveying pipe. The calibration mechanism includes a water-cooled fixture mechanism, a data acquisition board, a blackbody mechanism, and a shutter mechanism; wherein, the data acquisition board is located below the conveying mechanism, the blackbody mechanism and the shutter mechanism are sequentially located above the conveying mechanism, and the shutter mechanism is located on the side closer to the conveying mechanism. The water-cooled fixture mechanism includes a water-cooled fixture and a water-cooled fixture driving mechanism. The water-cooled fixture is connected to the sensor bracket under the drive of the water-cooled fixture driving mechanism.

2. The sensor calibration device according to claim 1, characterized in that, The sensor bracket is provided with multiple sensor through holes, each of which is adapted to the sensor under test.

3. The sensor calibration device according to claim 2, characterized in that, The sensor bracket includes a flat plate and a boss, the boss being disposed above the flat plate, and the sensor through hole being a through hole penetrating the flat plate and the boss.

4. The sensor calibration device according to claim 3, characterized in that, The plate has connection holes on both sides, and the plate is connected to the conveying mechanism through the connection holes.

5. The sensor calibration device according to claim 3, characterized in that, The plate has positioning holes on its periphery.

6. The sensor calibration device according to claim 3, characterized in that, The water-cooled fixture has an embedding groove on one side facing the sensor bracket that matches the boss.

7. The sensor calibration device according to claim 6, characterized in that, The bottom surface of the embedding groove is provided with a plurality of water-cooled fixture through holes, and the water-cooled fixture through holes correspond one-to-one with the sensor through holes.

8. The sensor calibration device according to claim 1, characterized in that, The data acquisition board is equipped with a signal interface and multiple pins, and the data acquisition board is electrically connected to the sensor under test through the pins.

9. The sensor calibration device according to claim 1, characterized in that, The blackbody mechanism includes a blackbody drive mechanism and at least one blackbody, wherein the blackbody is connected to the blackbody drive mechanism in a transmission manner.

10. The sensor calibration device according to claim 1, characterized in that, The shutter mechanism includes a shutter and a shutter drive mechanism, and the shutter is connected to the shutter drive mechanism in a driving connection.

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