Sensor sensitivity automatic metering and detecting device and use method thereof

Abstract

The invention relates to the technical field of sensor detection, and discloses a sensor sensitivity automatic metering detection device and a use method thereof.The sensor sensitivity automatic metering detection device comprises a shell, a detection box is fixedly installed in the shell, a clamping assembly is arranged in the detection box, and a cooling assembly is arranged between the shell and the detection box; before detection, a to-be-detected temperature sensor needs to be clamped and fixed, one end of the to-be-detected temperature sensor is inserted into a mounting hole of a base, a double-shaft motor is started, threaded rods at the two ends rotate synchronously, and a threaded sliding block and a sliding block move to enable connecting plates on the two sides to drive clamping pieces to be close to each other; a hydraulic rod is pushed to extend out to drive a positioning plate to move downwards, a positioning hole in the positioning plate accurately penetrates through the temperature sensor to be detected, the upper end of the temperature sensor to be detected is limited, and the moving space of the temperature sensor to be detected in the vertical direction is limited. And the whole process can be smoothly propelled under a stable condition.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor detection, and in particular to a sensor sensitivity automatic measurement and detection device and a use method thereof. Background Art

[0002] A sensor is a device that can sense a specified quantity and convert it into a usable signal according to certain rules. Its working principle is based on various physical, chemical and biological effects. Sensors can be divided into physical quantity sensors, chemical quantity sensors and biomass sensors. The principles and technologies based on different types of sensors vary greatly. Among them, temperature sensors have indispensable applications in many fields. In industrial process control, such as chemical, steel, electric power and other industries, temperature sensors are used to monitor and control the temperature in the production process to ensure production safety and product quality. In smart homes, temperature sensors are key components for achieving automatic indoor temperature adjustment. They work with air conditioners, heaters and other equipment to provide people with a comfortable living environment.

[0003] However, existing temperature sensors usually do not have a stable clamping setting when performing sensitivity testing, which may easily cause the following problems: first, the position of the sensor may move during the detection process, which will cause deviations in the sensor output signal and affect the evaluation of the sensor sensitivity; second, the connection between the sensor and the signal generator, detection circuit, etc. may be loose, which will cause the sensor output signal to be interrupted or the signal quality to deteriorate during the transmission process. For this reason, we propose a sensor sensitivity automatic measurement and detection device and a method for using it. Summary of the invention

[0004] The object of the present invention is to provide an automatic measurement and detection device for sensor sensitivity, so as to solve the problem that the existing temperature sensors proposed in the above background technology are usually not set with stable clamping when performing sensitivity detection, which is prone to the following problems: first, the position of the sensor may move during the detection process, which will cause deviations in the sensor output signal and affect the evaluation of the sensor sensitivity; second, the parts connecting the sensor with the signal generator, detection circuit, etc. may become loose, which will cause the sensor output signal to be interrupted during transmission or the signal quality to deteriorate.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sensor sensitivity automatic metering detection device, comprising a shell, a detection box is fixedly installed inside the shell, a clamping assembly is provided inside the detection box, a cooling assembly is provided between the shell and the detection box, the clamping assembly comprises a base fixedly installed on the bottom surface of the detection box, the base is connected to a dual-axis motor and a straight rod through a limit groove, the dual-axis motor is connected to a threaded slider through a threaded rod, the straight rod is connected to a connecting plate and a clamping plate through a sliding block, the base is connected to a hydraulic rod through a vertical plate, the hydraulic rod is provided with a positioning hole through a positioning plate, and a mounting hole is provided on the surface of the base and directly below the positioning hole.

[0006] As a further solution of the present invention, a plurality of heating blocks distributed at equal intervals are fixedly installed around the inner bottom surface of the detection box, and a silicon carbon rod heating element is fixedly installed inside each of the plurality of heating blocks. An installation door and a box door are respectively provided on the front sides of the shell and the detection box, and a temperature control display is fixedly installed on the outer surface of the installation door.

[0007] As a further solution of the present invention, a signal generator is fixedly installed on the bottom outer surface of the shell, and a detection circuit and a data acquisition device are fixedly installed on the top thereof. Heat dissipation ports are provided on both sides of the shell and the detection box, and heat exhaust components are provided on the left and right sides of the shell at the heat dissipation ports.

[0008] As a further solution of the present invention, the limiting grooves are provided with two groups and are evenly opened at the front and rear ends of the surface of the base, the dual-axis motor is fixedly installed at the inner center of the rear end limiting groove, the threaded rods are provided with two groups and are respectively fixedly installed at the two ends of the dual-axis motor, the threads of the two groups of threaded rods are arranged oppositely, the straight rod is fixedly installed inside the front end limiting groove, the threaded sliders are provided with two groups and are respectively threadedly connected to the circumferential surfaces of the two groups of threaded rods, the sliding blocks are provided with two groups and are slidably connected to the two ends of the circumferential surface of the straight rod, and the threaded sliders and the sliding blocks are both slidably connected to the inside of the limiting grooves.

[0009] As a further solution of the present invention, the connecting plate is fixedly installed on the top of the threaded slider and the sliding block, and is slidably connected to the surface of the base, the clamping plate is fixedly installed on one side surface of the connecting plate close to the mounting hole, the vertical plates are provided in two groups and are respectively fixedly installed on the two ends of the surface of the base, the hydraulic rods are provided in two groups and are respectively fixedly installed on the top of the vertical plates, the positioning plate is fixedly installed on the output ends of the two groups of hydraulic rods, and the positioning hole is opened at the surface center of the positioning plate.

[0010] As a further solution of the present invention, the cooling assembly includes a cooling box fixedly mounted on the right outer surface of the shell, the cooling box is connected to a pump body via an output pipe, the pump body is connected to a cooling pipe via a liquid inlet pipe, a liquid outlet pipe is fixedly mounted at one end of the cooling pipe away from the liquid inlet pipe, and one end of the liquid outlet pipe extends to the interior of the cooling box, and a liquid inlet is provided at the front end of the surface of the cooling box.

[0011] As a further solution of the present invention, one end of the output pipe is fixedly connected to the cooling box, and the output pipe extends to the interior of the cooling box, the other end of the output pipe is fixedly connected to the input end of the pump body, the liquid inlet pipe is fixedly installed at the output end of the pump body, the pump body is fixedly installed on the front outer surface of the cooling box, one end of the cooling pipe is fixedly connected to the liquid inlet pipe, and the cooling pipe is spirally arranged, the cooling pipe is spirally arranged, and it is arranged inside the shell and fixedly installed on the outer surface of the detection box.

[0012] As a further solution of the present invention, the heat exhaust component includes a mounting frame fixedly mounted on the side of the shell, the inner wall of the mounting frame is provided with a mounting groove, a rotating motor is fixedly mounted on the outer surface of the front upper end of the mounting frame, a rotating shaft is fixedly mounted on the output end of the rotating motor, and the rotating shaft is arranged at the inner upper end of the mounting groove, and a roller blind is provided on the circumferential surface of the rotating shaft.

[0013] In addition, the present invention also provides a method for using the sensor sensitivity automatic measurement detection device, comprising the following steps:

[0014] Step 1: First, check whether all components of the temperature sensor automatic metering and detection device are working properly, including the signal generator, temperature control display, detection circuit, data acquisition equipment and the temperature sensor to be detected, etc., ensure that the communication lines and cables between the various devices are connected correctly, then turn on each device and initialize the device;

[0015] Step 2: Then insert one end of the temperature sensor to be detected into the mounting hole of the base. At this time, start the dual-axis motor, and the threaded rods at both ends rotate at the same time, so that the threaded slider and the sliding block move on the circumferential surface of the threaded rod and the straight rod respectively, so that the connecting plates on both sides drive the clamping pieces to move toward each other until the two clamping pieces contact the temperature sensor to be detected and complete the clamping. Then start the two hydraulic rods to drive the positioning plate to move downward, and the positioning hole passes through the temperature sensor to be detected, and the upper and lower ends of the temperature sensor to be detected are limited and fixed. The thermal resistor at the top of the temperature sensor to be detected is exposed to the outside, which is convenient for receiving the temperature in the detection box;

[0016] Step 3: After the temperature sensor to be detected is installed, the signal generator provides a known input signal to the temperature sensor to be detected, and the silicon carbon rod heating element inside the heating block is controlled to work through the temperature control display, and the temperature sensor to be detected is heated according to the set temperature change range and rate. At the same time, the output signal of the temperature sensor to be detected is collected through the detection circuit and the data acquisition device, and the collected temperature sensor output signal and the corresponding temperature value and other data are stored in a computer or a data storage device for subsequent data analysis and processing, so as to complete the sensitivity detection of the temperature sensor to be detected in the heating environment;

[0017] Step 4: After that, the rotating motor drives the rotating shaft to rotate, so that the rolling curtain is wound around the circumferential surface of the rotating shaft. At this time, the heat of the detection box is discharged through the heat dissipation port. After a period of time, the rotating motor rotates in the opposite direction, so that the rolling curtain descends to cover the heat dissipation port. At this time, the pump body is turned on, and the coolant in the cooling box circulates in the output pipe, the liquid inlet pipe, the cooling pipe and the liquid outlet pipe in turn, providing a very low temperature environment for the detection box. Repeat step 3 to complete the sensitivity test of the temperature sensor to be tested in the low temperature environment;

[0018] Step 5. According to the definition of sensor sensitivity, that is, the ratio of the sensor output change to the input change, use the collected data to calculate the sensor sensitivity. It is known that the change in the input signal is △x and the change in the sensor output signal is △y, then the sensor sensitivity S = △y / △x.

[0019] Technical effects and advantages of the present invention:

[0020] 1. Through the set clamping assembly, the temperature sensor to be detected needs to be clamped and fixed before detection. One end of the temperature sensor to be detected is inserted into the mounting hole of the base. Then, the dual-axis motor is started, and the threaded rods at both ends rotate synchronously. The threaded slider and the sliding block that moves smoothly along the straight rod move smoothly, so that the connecting plates on both sides drive the clamping pieces to move closer together until the clamping pieces and the temperature sensor to be detected fit tightly, effectively limiting its horizontal displacement. Then, the hydraulic rod is pushed out to drive the positioning plate to move downward. The positioning hole on the positioning plate accurately passes through the temperature sensor to be detected, and its upper end is limited to limit its vertical activity space, ensuring that the whole process can be smoothly carried out under stable conditions;

[0021] 2. Through the cooling component, after completing the sensitivity test of the temperature sensor in the test box under the heating environment with the heating block, the cooling sensitivity test is started immediately. At this time, the pump is started, and the coolant in the cooling box circulates in the output pipe, the liquid inlet pipe, the cooling pipe and the liquid outlet pipe in turn to achieve heat exchange. This cycle is repeated to continuously create a low-temperature and stable test environment for the test box. At the same time, the detection circuit captures the subtle changes in the electrical signals output by the temperature sensor to be detected, and the data acquisition equipment synchronously records these signals and the corresponding precise temperature values, waiting for the subsequent in-depth analysis and fine processing with the help of professional analysis software and precise algorithms, so as to accurately determine the sensitivity value of the temperature sensor to be detected in the cooling environment;

[0022] 3. Through the heat dissipation component, before officially starting the cooling component, first turn on the rotating motor to drive the rotating shaft to rotate steadily. As the rotating shaft rotates at a uniform speed, the aluminum silicate roller shutter, with its good flexibility, is tightly and regularly wrapped around the circumferential surface of the rotating shaft. In this process, the heat accumulated inside the detection box can be quickly discharged through the heat dissipation ports on both sides, achieving rapid cooling, greatly shortening the cooling time, and significantly improving the efficiency of the entire detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the present invention;

[0025] Figure 3 It is a schematic diagram of a partial internal three-dimensional structure of the present invention;

[0026] Figure 4 It is a front cross-sectional structural schematic diagram of the present invention;

[0027] Figure 5 It is a left-side cross-sectional structural schematic diagram of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0029] Figure 7 It is a partial structural schematic diagram of the clamping assembly of the present invention;

[0030] Figure 8 It is a schematic diagram of the cooling assembly structure of the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the heat dissipation component of the present invention.

[0032] In the figure: 1, shell; 2, detection box; 3, clamping assembly; 4, cooling assembly; 5, heat removal assembly; 6, signal generator; 7, detection circuit; 8, data acquisition equipment; 9, temperature control display; 10, heating block; 11, installation door; 12, box door; 13, heat dissipation port; 301, base; 302, limit groove; 303, vertical plate; 304, mounting hole; 305, dual-axis motor; 306, threaded rod; 307, straight rod; 308, threaded slider; 309, sliding block; 310, connecting plate; 311, clamping plate; 312, hydraulic rod; 313, positioning plate; 314, positioning hole; 401, cooling box; 402, output pipe; 403, pump body; 404, liquid inlet pipe; 405, cooling pipe; 406, liquid outlet pipe; 407, liquid inlet; 501, mounting frame; 502, mounting groove; 503, rotating motor; 504, rotating shaft; 505, roller blind. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1:

[0035] Please see attached Figure 1 - Attachment Figure 7A sensor sensitivity automatic measurement detection device and a method of using the same include a shell 1, a detection box 2 is fixedly installed inside the shell 1, a clamping assembly 3 is arranged inside the detection box 2, a cooling assembly 4 is arranged between the shell 1 and the detection box 2, the clamping assembly 3 includes a base 301 fixedly installed on the bottom surface of the detection box 2, the base 301 is connected to a double-axis motor 305 and a straight rod 307 through a limit groove 302, the double-axis motor 305 is connected to a threaded slider 308 through a threaded rod 306, the straight rod 307 is connected to a connecting plate 310 and a clamping sheet 311 through a sliding block 309, and the base 301 is connected to a hydraulic rod 312 through a vertical plate 303 The hydraulic rod 312 is provided with a positioning hole 314 through the positioning plate 313, and a mounting hole 304 is provided on the surface of the base 301 and directly below the positioning hole 314. A plurality of heating blocks 10 distributed at equal intervals are fixedly installed around the inner bottom surface of the detection box 2, and a silicon carbon rod heating element is fixedly installed inside the plurality of heating blocks 10. The front sides of the shell 1 and the detection box 2 are respectively provided with a mounting door 11 and a box door 12, and a temperature control display 9 is fixedly installed on the outer surface of the mounting door 11. A signal generator 6 is fixedly installed on the outer surface of the bottom of the shell 1, and a detection circuit 7 and a data acquisition device 8 are fixedly installed on the top thereof. The shell 1 and the detection box 2 are fixedly provided with a mounting door 11 and a box door 12. Heat dissipation ports 13 are provided on both sides, and heat dissipation components 5 are provided on the left and right sides of the shell 1 and at the heat dissipation ports 13. Two groups of limiting grooves 302 are provided and are evenly provided at the front and rear ends of the surface of the base 301. The dual-axis motor 305 is fixedly installed at the inner center of the rear end limiting groove 302. Two groups of threaded rods 306 are provided and are respectively fixedly installed at the two ends of the dual-axis motor 305. The threads of the two groups of threaded rods 306 are arranged in opposite directions. The straight rod 307 is fixedly installed inside the front end limiting groove 302. Two groups of threaded sliders 308 are provided and are respectively threadedly connected to the circumferential surfaces of the two groups of threaded rods 306. Two groups of sliding blocks 309 are provided and are slidably connected to the straight rod 30 At both ends of the circumferential surface of 7, the threaded slider 308 and the sliding block 309 are slidably connected to the inside of the limiting groove 302, the connecting plate 310 is fixedly installed on the top of the threaded slider 308 and the sliding block 309, and it is slidably connected to the surface of the base 301, the clamping piece 311 is fixedly installed on the side surface of the connecting plate 310 close to the mounting hole 304, the vertical plate 303 is provided with two groups and is respectively fixedly installed on the two ends of the surface of the base 301, the hydraulic rod 312 is provided with two groups and is respectively fixedly installed on the top of the vertical plate 303, the positioning plate 313 is fixedly installed on the output end of the two groups of hydraulic rods 312, and the positioning hole 314 is opened at the center of the surface of the positioning plate 313.

[0036] The mounting hole 304 is convenient for placing the wiring board at one end of the temperature sensor to be detected inside. The bottom of the temperature sensor to be detected is connected to the signal generator 6 through an electrical cable. The temperature sensor to be detected is signal-connected to the detection circuit 7 and the data acquisition device 8. A rubber pad is provided on the inner side of the clamping piece 311, so that the temperature sensor to be detected will not be damaged when clamped. The clamping and fixing method is adopted to ensure that the temperature sensor to be detected is always in the same position, so as to avoid the deviation of the output signal caused by the movement of the position and affect the sensitivity measurement.

[0037] Specifically, before detection, the temperature sensor to be detected needs to be clamped and fixed, and one end of the temperature sensor to be detected is inserted into the mounting hole 304 of the base 301. At this time, the dual-axis motor 305 is started, and the threaded rods 306 at both ends rotate at the same time, so that the threaded slider 308 and the sliding block 309 move on the circumferential surface of the threaded rod 306 and the straight rod 307 respectively, so that the connecting plates 310 on both sides drive the clamping pieces 311 to move toward each other until the two clamping pieces 311 contact the temperature sensor to be detected, and the clamping is completed. Then, the two hydraulic rods 312 are started to drive the positioning plate 313 to move downward, and the positioning hole 314 passes through the temperature sensor to be detected, and its upper and lower ends are limited and fixed, and the thermal resistor at the top of the temperature sensor to be detected is exposed to the outside, and the clamping is completed.

[0038] Embodiment 2:

[0039] Please see attached Figure 1 - Attachment Figure 5 And attached Figure 8 , and on the basis of the first embodiment, it is further obtained that the cooling assembly 4 includes a cooling box 401 fixedly mounted on the right outer surface of the shell 1, the cooling box 401 is connected to the pump body 403 through the output pipe 402, the pump body 403 is connected to the cooling pipe 405 through the liquid inlet pipe 404, the cooling pipe 405 is fixedly mounted with a liquid outlet pipe 406 at one end away from the liquid inlet pipe 404, and one end of the liquid outlet pipe 406 extends to the interior of the cooling box 401, the front end of the surface of the cooling box 401 is provided with a liquid inlet port 407, and one end of the output pipe 402 is connected to the cooling box 401. It is fixedly connected to the cooling box 401, and the output pipe 402 extends to the interior of the cooling box 401, the other end of the output pipe 402 is fixedly connected to the input end of the pump body 403, the liquid inlet pipe 404 is fixedly installed at the output end of the pump body 403, the pump body 403 is fixedly installed on the front outer surface of the cooling box 401, one end of the cooling pipe 405 is fixedly connected to the liquid inlet pipe 404, and the cooling pipe 405 is spirally arranged, the cooling pipe 405 is spirally arranged, and it is arranged inside the shell 1 and fixedly installed on the outer surface of the detection box 2.

[0040] A standard temperature sensor is provided inside the detection box 2, and the standard temperature sensor is electrically connected to the temperature control display 9 for recording the exact temperature inside the detection box 2 and displaying it on the temperature control display 9 in a timely manner. The amplifying circuit in the detection circuit 7 can amplify the weak signal output by the temperature sensor to be detected to a suitable amplitude. By connecting the detection circuit 7 to the data acquisition device 8, the processed signal can be accurately transmitted to the data acquisition device 8. A mixed solution of ethylene glycol and water is used as a coolant in the cooling box 401. Ethylene glycol has a low freezing point. By adjusting the mixing ratio of ethylene glycol and water, coolants with different freezing points can be obtained. When the mass fraction of ethylene glycol reaches about 60%, the freezing point of the mixed solution can be reduced to about minus 50 degrees.

[0041] Specifically, after the detection box 2 is heated by the heating block 10 to perform a temperature rise sensitivity test, when it is necessary to test the cooling sensitivity of the temperature sensor, the pump body 403 is turned on, and the coolant in the cooling box 401 circulates in the output pipe 402, the liquid inlet pipe 404, the cooling pipe 405 and the liquid outlet pipe 406 in turn, continuously providing a very low temperature environment for the detection box 2, and at the same time, the output signal of the temperature sensor to be detected is collected by the detection circuit 7 and the data acquisition device 8, and the collected temperature sensor output signal and the corresponding temperature value and other data are stored in a computer or a data storage device for subsequent data analysis and processing, so as to complete the sensitivity test of the temperature sensor to be detected in the cooling environment.

[0042] Embodiment three:

[0043] Please see attached Figure 1 - Attachment Figure 5 And attached Fig. 9 On the basis of the second embodiment, it is further obtained that the heat exhaust component 5 includes a mounting frame 501 fixedly mounted on the side of the shell 1, the inner wall of the mounting frame 501 is provided with a mounting groove 502, a rotating motor 503 is fixedly mounted on the outer surface of the front upper end of the mounting frame 501, a rotating shaft 504 is fixedly mounted on the output end of the rotating motor 503, and the rotating shaft 504 is arranged at the inner upper end of the mounting groove 502, and a roller blind 505 is provided on the circumferential surface of the rotating shaft 504.

[0044] The heating and cooling process covers the entire range of temperature changes, and can comprehensively detect the linearity of the temperature sensor in different temperature sections, rather than just evaluating it in a single process of heating or cooling. By rolling up the roller shutter 505, it is convenient to quickly discharge the heat heated by the heating block 10 in the detection box 2, thereby improving the cooling efficiency of the cooling component 4. The roller shutter 505 is made of aluminum silicate material, which is relatively soft and has a certain flexibility. Its fiber structure enables it to bend and deform to a certain extent, which makes it possible to make it into a roller shutter 505 that can be wound around the rotating shaft 504. The aluminum silicate material is also a highly efficient thermal insulation material, which can also prevent heat from being discharged from the heat dissipation port 13.

[0045] Specifically, before officially starting the cooling component 4, first turn on the rotating motor 503 to drive the rotating shaft 504 to rotate steadily. As the rotating shaft 504 rotates at a uniform speed, the roller shutter 505 made of aluminum silicate material is tightly and regularly wrapped around the circumferential surface of the rotating shaft 504 by virtue of its good flexibility. During this process, the heat accumulated inside the detection box 2 can be quickly discharged through the heat dissipation ports 13 on both sides, achieving rapid cooling, greatly shortening the cooling time, and significantly improving the efficiency of the entire detection process.

[0046] Working principle of the present invention: The present invention is a sensor sensitivity automatic metering detection device and its use method. First, check whether the various components of the temperature sensor automatic metering detection device are working normally, including the signal generator 6, the temperature control display 9, the detection circuit 7, the data acquisition device 8 and the temperature sensor to be detected, etc., to ensure that the communication lines and cables between the various devices are connected correctly, and then turn on each device, initialize the device, and then insert one end of the temperature sensor to be detected into the mounting hole 304 of the base 301. At this time, start the dual-axis motor 305, and the threaded rods 306 at both ends rotate simultaneously, so that The threaded slider 308 and the sliding block 309 move on the circumferential surface of the threaded rod 306 and the straight rod 307 respectively, so that the connecting plates 310 on both sides drive the clamping pieces 311 to move toward each other until the two clamping pieces 311 contact the temperature sensor to be detected and complete the clamping. Then, the two hydraulic rods 312 are started to drive the positioning plate 313 to move downward, and the positioning hole 314 passes through the temperature sensor to be detected, and the upper and lower ends of the temperature sensor are limited and fixed. The signal generator 6 provides a known input signal for the temperature sensor to be detected, and the silicon carbon rod heating element inside the heating block 10 is controlled to work through the temperature control display 9, and the temperature starts to be set according to the setting. The temperature sensor to be detected is heated according to the temperature change range and rate. At the same time, the output signal of the temperature sensor to be detected is collected through the detection circuit 7 and the data acquisition device 8. The collected temperature sensor output signal and the corresponding temperature value and other data are stored in a computer or a data storage device for subsequent data analysis and processing to complete the sensitivity detection of the temperature sensor to be detected in the heating environment. Thereafter, the rotating motor 503 drives the rotating shaft 504 to rotate, so that the rolling curtain 505 is wound around the circumferential surface of the rotating shaft 504. At this time, the heat of the detection box 2 is discharged through the heat dissipation port 13. After a period of time, the rotating motor 503 Rotate in the opposite direction to make the roller shutter 505 drop to cover the heat dissipation port 13. At this time, turn on the pump body 403, and the coolant in the cooling box 401 circulates in the output pipe 402, the liquid inlet pipe 404, the cooling pipe 405 and the liquid outlet pipe 406 in turn, continuously creating a low-temperature and stable test environment for the detection box 2, and performing sensitivity detection under the cooling environment. According to the definition of sensor sensitivity, the sensitivity of the sensor is calculated using the collected data. It is known that the change in the input signal is △x, and the change in the sensor output signal is △y, then the sensor sensitivity S=△y / △x. Finally, the results are displayed and a report is generated. At this point, the whole process ends.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sensor sensitivity automatic measurement detection device, comprising a housing (1), wherein a detection box (2) is fixedly installed inside the housing (1), characterized in that: A clamping assembly (3) is provided inside the detection box (2); a cooling assembly (4) is provided between the shell (1) and the detection box (2); the clamping assembly (3) comprises a base (301) fixedly mounted on the bottom surface of the detection box (2); the base (301) is connected to a double-axis motor (305) and a straight rod (307) via a limiting groove (302); the double-axis motor (305) is connected to a threaded slider (308) via a threaded rod (306); the straight rod (307) is connected to a connecting plate (310) and a clamping sheet (311) via a sliding block (309); the base (301) is connected to a hydraulic rod (312) via a vertical plate (303); a positioning hole (314) is provided on the hydraulic rod (312) via a positioning plate (313); and a mounting hole (304) is provided on the surface of the base (301) and directly below the positioning hole (314).

2. The automatic measurement and detection device for sensor sensitivity according to claim 1 is characterized in that: A plurality of heating blocks (10) are fixedly mounted around the bottom surface of the detection box (2) at equal intervals, and a silicon carbon rod heating element is fixedly mounted inside each of the plurality of heating blocks (10). The front sides of the shell (1) and the detection box (2) are respectively provided with an installation door (11) and a box door (12), and a temperature control display (9) is fixedly mounted on the outer surface of the installation door (11).

3. The automatic measurement and detection device for sensor sensitivity according to claim 1 is characterized in that: A signal generator (6) is fixedly mounted on the outer surface of the bottom of the shell (1), while a detection circuit (7) and a data acquisition device (8) are fixedly mounted on the top thereof. Heat dissipation openings (13) are provided on both sides of the shell (1) and the detection box (2). Heat dissipation components (5) are provided on the left and right sides of the shell (1) and at the heat dissipation openings (13).

4. The automatic measurement and detection device for sensor sensitivity according to claim 1 is characterized in that: The limiting grooves (302) are provided in two groups and are evenly opened at the front and rear ends of the surface of the base (301); the dual-axis motor (305) is fixedly installed at the inner center of the rear end limiting groove (302); the threaded rods (306) are provided in two groups and are respectively fixedly installed at the two ends of the dual-axis motor (305); the threads of the two groups of threaded rods (306) are arranged in opposite directions; the straight rod (307) is fixedly installed inside the front end limiting groove (302); the threaded sliders (308) are provided in two groups and are respectively threadedly connected to the circumferential surfaces of the two groups of threaded rods (306); the sliding blocks (309) are provided in two groups and are slidably connected to the two ends of the circumferential surface of the straight rod (307); the threaded sliders (308) and the sliding blocks (309) are both slidably connected to the inside of the limiting groove (302).

5. The automatic measurement and detection device for sensor sensitivity according to claim 1 is characterized in that: The connecting plate (310) is fixedly mounted on the top of the threaded slider (308) and the sliding block (309), and is slidably connected to the surface of the base (301). The clamping piece (311) is fixedly mounted on a side surface of the connecting plate (310) close to the mounting hole (304). The vertical plate (303) is provided with two groups and is respectively fixedly mounted on the two ends of the surface of the base (301). The hydraulic rod (312) is provided with two groups and is respectively fixedly mounted on the top of the vertical plate (303). The positioning plate (313) is fixedly mounted on the output ends of the two groups of hydraulic rods (312), and the positioning hole (314) is opened at the center of the surface of the positioning plate (313).

6. The automatic measurement and detection device for sensor sensitivity according to claim 1 is characterized in that: The cooling assembly (4) comprises a cooling box (401) fixedly mounted on the right outer surface of the shell (1); the cooling box (401) is connected to a pump body (403) via an output pipe (402); the pump body (403) is connected to a cooling pipe (405) via a liquid inlet pipe (404); a liquid outlet pipe (406) is fixedly mounted at one end of the cooling pipe (405) away from the liquid inlet pipe (404); one end of the liquid outlet pipe (406) extends to the interior of the cooling box (401); and a liquid inlet port (407) is provided at the front end of the surface of the cooling box (401).

7. The automatic measurement and detection device for sensor sensitivity according to claim 6 is characterized in that: One end of the output pipe (402) is fixedly connected to the cooling box (401), and the output pipe (402) extends to the interior of the cooling box (401); the other end of the output pipe (402) is fixedly connected to the input end of the pump body (403); the liquid inlet pipe (404) is fixedly installed at the output end of the pump body (403); the pump body (403) is fixedly installed on the front outer surface of the cooling box (401); one end of the cooling pipe (405) is fixedly connected to the liquid inlet pipe (404), and the cooling pipe (405) is arranged in a spiral shape; the cooling pipe (405) is arranged in a spiral shape, and is arranged inside the shell (1) and fixedly installed on the outer surface of the detection box (2).

8. The automatic measurement and detection device for sensor sensitivity according to claim 3 is characterized in that: The heat dissipation component (5) comprises a mounting frame (501) fixedly mounted on the side of the housing (1); a mounting groove (502) is provided on the inner wall of the mounting frame (501); a rotating motor (503) is fixedly mounted on the outer surface of the upper front end of the mounting frame (501); a rotating shaft (504) is fixedly mounted on the output end of the rotating motor (503); the rotating shaft (504) is arranged at the inner upper end of the mounting groove (502); and a rolling curtain (505) is provided on the circumferential surface of the rotating shaft (504).

9. A method for using the automatic measurement and detection device for sensor sensitivity according to any one of claims 1 to 8, characterized in that: The specific steps are as follows: Step 1: First, check whether the various components of the temperature sensor automatic metering detection device are working properly, including the signal generator 6, the temperature control display 9, the detection circuit 7, the data acquisition device 8 and the temperature sensor to be detected, etc., ensure that the communication lines and cables between the various devices are connected correctly, then turn on each device and initialize the device; Step 2, then insert one end of the temperature sensor to be detected into the mounting hole 304 of the base 301, at this time, start the dual-axis motor 305, and the threaded rods 306 at both ends rotate at the same time, so that the threaded slider 308 and the sliding block 309 move on the circumferential surface of the threaded rod 306 and the straight rod 307 respectively, so that the connecting plates 310 on both sides drive the clamping pieces 311 to move toward each other until the two clamping pieces 311 contact the temperature sensor to be detected and complete the clamping, and then start the two hydraulic rods 312 to drive the positioning plate 313 to move downward, and the positioning hole 314 passes through the temperature sensor to be detected, and the upper and lower ends of the temperature sensor to be detected are limited and fixed, and the thermal resistor at the top of the temperature sensor to be detected is exposed to the outside, which is convenient for receiving the temperature in the detection box 2; Step 3: After the temperature sensor to be detected is installed, the signal generator 6 provides a known input signal for the temperature sensor to be detected, and controls the silicon carbon rod heating element inside the heating block 10 to work through the temperature control display 9, and starts to heat the temperature sensor to be detected according to the set temperature change range and rate. At the same time, the output signal of the temperature sensor to be detected is collected through the detection circuit 7 and the data acquisition device 8, and the collected temperature sensor output signal and the corresponding temperature value and other data are stored in a computer or a data storage device for subsequent data analysis and processing, so as to complete the sensitivity detection of the temperature sensor to be detected in the heating environment; Step 4: After that, the rotating motor 503 drives the rotating shaft 504 to rotate, so that the rolling curtain 505 is wound around the circumferential surface of the rotating shaft 504. At this time, the heat of the detection box 2 is discharged through the heat dissipation port 13. After a period of time, the rotating motor 503 rotates in the opposite direction, so that the rolling curtain 505 descends to cover the heat dissipation port 13. At this time, the pump body 403 is turned on, and the coolant in the cooling box 401 circulates in the output pipe 402, the liquid inlet pipe 404, the cooling pipe 405 and the liquid outlet pipe 406 in turn, providing a very low temperature environment for the detection box 2. Repeat step 3 to complete the sensitivity test of the temperature sensor to be tested in the low temperature environment; Step 5. According to the definition of sensor sensitivity, that is, the ratio of the sensor output change to the input change, use the collected data to calculate the sensor sensitivity. It is known that the change in the input signal is △x and the change in the sensor output signal is △y, then the sensor sensitivity S = △y / △x.

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