Device for testing and calibrating temperature sensor

Abstract

The utility model relates to a device for testing and calibrating a temperature sensor, which belongs to the technical field of sensor testing and calibrating, and comprises a main control board, the main control board is connected with a sub-control board, an itinerant detector, an incubator and a PC (Personal Computer), the sub-control board is connected with a carrier plate, the carrier plate is used for installing a temperature sensor to be tested and calibrated, the itinerant detector is connected with a platinum resistor, and the platinum resistor is arranged in the incubator. A carrier plate placing plate which can be taken out is arranged in the incubator; a plurality of baffles are arranged on the carrier plate placing plate and are parallel to one another, and the two ends of each baffle are aligned; and a space for vertically placing a carrier plate of a to-be-tested calibration temperature sensor is formed between the adjacent baffle plates. The carrier plate placing plate capable of being taken out is arranged in the incubator, a plurality of baffles are fixedly arranged on the carrier plate placing plate, and a space for vertically placing the carrier plates can be formed between every two adjacent baffles, so that the carrier plates are orderly and vertically arranged and placed, and the space utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor testing and calibration, in particular to a device for testing and calibration of a temperature sensor. Background Art

[0002] A sensor is a device that converts sensory signals into electrical signals that can be used for information processing, including temperature sensors, pressure sensors, photoelectric sensors, etc.

[0003] A temperature sensor is a device or sensor used to measure and monitor the temperature of an object or environment. It is able to convert temperature into an electrical signal or other types of output signals for temperature measurement, monitoring and control. Temperature sensors are used in a variety of fields and applications, including industrial production, scientific research, environmental monitoring, medical equipment, electronic equipment, etc. They play an important role in many systems and devices, such as temperature control systems, climate control systems, cooling systems, etc. Temperature sensors play a key role in various applications, helping to measure and control temperature and keep the system running and safe.

[0004] In practical applications, the data output by temperature sensors is often affected by environmental, physical, electronic and other factors, resulting in errors. Temperature sensors usually need to be tested and calibrated to ensure the accuracy and reliability of their measurement results. Calibration is a calibration process that determines the difference between the sensor output and the actual temperature by comparing it with a known precise temperature value, and makes corrections to improve the precision and accuracy of the sensor's output data.

[0005] When testing and calibrating the temperature sensor, a test and calibration device is usually used. The test and calibration device usually includes a main control board, a sub-control board, a patrol meter, a temperature chamber, a PC and a carrier board. The sensor is usually fixed on the carrier board, and the carrier board with the sensor is placed in the temperature chamber. When there are many carrier boards in the temperature chamber, the carrier boards will be placed in a mess. In addition, the space utilization rate of the temperature chamber is low. Utility Model Content

[0006] The utility model provides a device for testing and calibrating a temperature sensor, comprising a main control board, the main control board is connected to a sub-control board, a patrol meter, a temperature box and a PC, the sub-control board is connected to a carrier board, the carrier board is used to install a temperature sensor to be tested and calibrated, the patrol meter is connected to a platinum resistor, the platinum resistor is placed in a temperature box, and a removable carrier placement plate is provided in the temperature box;

[0007] A plurality of baffles are arranged on the carrier plate, and the baffles are parallel to each other and aligned at both ends;

[0008] A space for vertically placing a carrier board on which a temperature sensor to be tested and calibrated is mounted is formed between adjacent baffles.

[0009] Furthermore, a first slide groove and a second slide groove are provided at the top of the carrier plate, and the first slide groove and the second slide groove are parallel to each other, aligned at both ends and perpendicular to each baffle;

[0010] Two sliding blocks are provided at the bottom of the baffle, and the two sliding blocks at the bottom of the baffle are placed in the first slide groove and the second slide groove one by one, and slideably cooperate with the first slide groove and the second slide groove respectively;

[0011] Both ends of the baffle are provided with positioning parts, and a limiting hole row is provided below the positioning part. The limiting hole row includes a plurality of limiting holes, and the limiting holes are evenly distributed along the length direction of the first slide groove or the second slide groove;

[0012] A through hole used in conjunction with the limiting hole is provided on the positioning part at a position corresponding to the row of limiting holes arranged below the positioning part, and a positioning pin used in conjunction with the through hole and the limiting hole is provided on the positioning part.

[0013] Furthermore, a ball bearing is provided at the lower end of the sliding block.

[0014] Furthermore, a ball hole penetrating through the ball center is provided in the ball;

[0015] The sliding block is provided with an arc groove matched with the ball, and a baffle hole extending along the length direction of the baffle;

[0016] A connecting rod penetrating the baffle hole and the ball hole is also arranged in the sliding block.

[0017] Furthermore, fixing plates are provided at both ends of the connecting rod, and the fixing plates are fixedly connected to the baffle.

[0018] Furthermore, a support frame is provided at the bottom of the carrier plate.

[0019] Beneficial effects of the utility model:

[0020] The utility model provides a removable carrier plate placement plate in the incubator, and a plurality of baffles are provided on the carrier plate placement plate. Space for vertically placing carrier plates can be formed between two adjacent baffles, which helps to arrange the carrier plates in an orderly and vertical manner and improve space utilization.

[0021] The utility model provides a first slide groove and a second slide groove on the carrier placement plate, and two sliding blocks are provided at the bottom end of the baffle plate. The two sliding blocks are respectively slidably matched with the first slide groove and the second slide groove, and the interval between two adjacent baffle plates can be adjusted according to actual needs, thereby increasing the flexibility of use.

[0022] These and other purposes, features and advantages of the present invention are fully reflected in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A schematic block diagram of a temperature sensor testing and calibration device of the utility model is shown.

[0024] Figure 2 The utility model shows a schematic diagram of the structure of a carrier plate placement plate of the temperature sensor testing and calibration device.

[0025] Figure 3 The utility model shows a schematic diagram of the structure of a baffle plate of the temperature sensor testing and calibration device.

[0026] Figure 4 The utility model shows a schematic diagram of the structure of the sliding block and the ball of the device for testing and calibrating the temperature sensor.

[0027] Figure numerals: 1-main control board, 2-sub-control board, 3-inspection instrument, 4-temperature box, 5-PC, 6-carrier board, 7-platinum resistor, 8-carrier board placement plate, 9-first slide groove, 10-second slide groove, 11-limiting hole, 12-baffle, 13-sliding block, 14-fixed plate, 15-through hole, 16-ball, 17-ball hole, 18-baffle hole, 19-connecting rod, 20-positioning part, 21-arc groove. DETAILED DESCRIPTION

[0028] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0029] Those skilled in the art should understand that, in the disclosure of the specification, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0030] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0031] refer to Figure 1A temperature sensor test and calibration device according to a preferred embodiment of the utility model will be described in detail below. The test and calibration device includes a main control board 1, which is connected to a plurality of sub-control boards 2, a patrol meter 3, a temperature box 4 and a PC 5, where the PC 5 is a computer. Each sub-control board 2 is connected to a carrier board 6, which is placed in the temperature box 4. The carrier board 6 is integrated with a test socket for mounting the temperature sensor to be tested and calibrated. The patrol meter 3 is connected to a platinum resistor 7, which is placed in the temperature box 4.

[0032] In this embodiment, a switch door is provided on one side of the temperature box 4, and a removable carrier plate 8 is provided inside the temperature box 4.

[0033] A plurality of baffles 12 are fixedly disposed on the carrier plate 8 . The baffles 12 are parallel to each other and aligned at both ends. A space for vertically placing the carrier plate 6 with the temperature sensor to be tested and calibrated is formed between adjacent baffles 12 .

[0034] Working principle and workflow:

[0035] When in use, the temperature sensor to be tested and calibrated is installed on the carrier plate 6, the switch door of the incubator 4 is opened, the carrier plate placement plate 8 is taken out, and then the carrier plate 6 with the temperature sensor to be tested and calibrated is vertically placed in the space between adjacent baffles 12 in the incubator 4, and the switch door of the incubator 4 is closed to perform the test and calibration of the temperature sensor to be tested and calibrated. Placing the carrier plate 6 with the temperature sensor to be tested and calibrated vertically in the space between adjacent baffles 12 in the incubator 4 helps to arrange the carrier plates 6 in an orderly and vertical manner, thereby improving space utilization.

[0036] The calibrated temperature sensor to be tested is installed on the carrier board 6, which is placed in the temperature box 4. The switch door is provided with a position avoidance hole, which is used to lead out the connection line between the carrier board 6 and the sub-control board 2, and the connection line between the platinum resistor 7 and the inspection meter 3. The main control board 1 can control the temperature in the temperature box 4. The calibrated temperature sensor to be tested transmits the detected temperature of the temperature box 4 to the sub-control board 2 through the carrier board 6, and then to the main control board 1. At the same time, the platinum resistor 7 placed in the temperature box 4 is connected to the inspection meter 3, and the main control board 1 communicates with the inspection meter 3. The main control board 1 communicates with the PC 5, i.e., the computer host, and can burn in the calibration program to test and calibrate the calibrated temperature sensor to be tested.

[0037] Calibration is divided into two steps: temperature rotation and temperature translation, among which temperature translation is further divided into coarse adjustment and fine adjustment.

[0038] Temperature rotation is to measure the temperature with the chip at 0℃ and 85℃ respectively, and calculate the chip temperature error at the two temperatures (temperature error ΔT = chip temperature measurement result - temperature value of platinum resistance). After calculating the temperature error at 0℃ and 85℃, the position of the fuse to be adjusted is located according to the size of the rotation, and then the corresponding fuse is burned to complete the adjustment.

[0039] Temperature shift is to measure the temperature with the chip at 25℃, calculate the chip temperature error at 25℃ (temperature error ΔT = chip temperature measurement result - temperature value of platinum resistor), find the closest condition in the temperature shift lookup table (first perform rough adjustment calculation, then fine adjustment calculation), and then adjust the corresponding fuse according to the table. After completing the rotation and translation fuse adjustment, the chip temperature can be read and compared with the temperature of the temperature acquisition instrument to determine the temperature error of the calibrated product and judge whether the calibration is successful.

[0040] For example, Figure 2 As shown, the top of the carrier plate 8 is provided with a first slide groove 9 and a second slide groove 10, which are parallel to each other, aligned at both ends and perpendicular to each baffle 12. Two sliding blocks 13 are provided at the bottom of the baffle 12, and the two sliding blocks 13 at the bottom of the baffle 12 are placed in the first slide groove 9 and the second slide groove 10 one by one, respectively slidingly cooperating with the first slide groove 9 and the second slide groove 10. When in use, the baffle 12 is pushed to make the sliding block 13 slide in the first slide groove 9 and the second slide groove 10 to adjust the distance between the two adjacent baffles 12 and fix the carrier 6 between the two adjacent baffles 12.

[0041] Both ends of the baffle 12 are provided with positioning parts 20 , and a limiting hole row is provided below the positioning part 20 . The limiting hole row includes a plurality of limiting holes 11 , and the limiting holes 11 are evenly distributed along the length direction of the first slide groove 9 or the second slide groove 10 .

[0042] The positioning part 20 is provided with a through hole 15 for use with the limiting hole 11 at a position corresponding to the limiting hole row arranged below it, and the positioning part 20 is provided with a positioning pin for use with the through hole 15 and the limiting hole 11. When in use, the positioning pin is inserted into the through hole 15 and the limiting hole 11, so as to fix the baffle 12 and the carrier plate 8. In order to facilitate the movement of the baffle 12, a ball 16 is provided at the lower end of the sliding block 13, such as Figure 3 To simplify the structure of the attached figure, the locating pin is not drawn in the figure. Figure 2 And the corresponding text description can be realized, so I will not go into details here.

[0043] The working principle and workflow of this embodiment:

[0044] Use the positioning pins and insert the positioning pins into the through holes 15 and the limiting holes 11, so as to fix the baffle 12 and the carrier plate 8. After fixing one baffle 12, place the carrier plate 6 equipped with the sensor between the two baffles 12, move the position of the other baffle 12, fix the carrier plate 6 between the two adjacent baffles 12, and after adjusting the position of the baffle 12, insert the positioning pins into the through holes 15 and the limiting holes 11, so as to fix the baffle 12 and the carrier plate 8. Two adjacent baffles 12 can move in the first slide groove 9 and the second slide groove 10 to adjust the spacing, which can increase the number of baffles 12, increase the number of carriers 6 placed in the incubator 4, and can adjust the spacing between two adjacent baffles 12 according to actual needs, increase the flexibility of use, and further improve the space utilization.

[0045] For example, in combination Figure 4 The ball 16 is provided with a ball hole 17 penetrating the ball center, the sliding block 13 is provided with an arc groove 21 matching the ball 16, and a baffle hole 18 extending along the length direction of the baffle 12. The sliding block 13 is also provided with a connecting rod 19 penetrating the baffle hole 18 and the ball hole 17. The ball 16 can rotate relative to the sliding block 13, so as to facilitate the movement of the baffle 12.

[0046] Although the width of the first slide groove 9 and the second slide groove 10 is similar to the width of the sliding block 13, the connecting rod 19 will not move out of the baffle hole 18 and the ball hole 17, but in order to ensure the stability of the structure, a fixing piece 14 is provided at both ends of the connecting rod 19, and the fixing piece 14 is fixedly connected to the baffle 12, so that the connecting rod 19 and the sliding block 13 are relatively fixed, ensuring the stability of the structure. A support frame is provided at the bottom end of the carrier placement plate 8 to increase air permeability.

[0047] It should be noted that the terms "first, second" in the present invention are only used for descriptive purposes and do not indicate any order. They cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0048] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A device for testing and calibrating a temperature sensor, comprising a main control board (1), the main control board (1) being connected to a sub-control board (2), a patrol meter (3), a temperature box (4) and a PC (5), the sub-control board (2) being connected to a carrier board (6), the carrier board (6) being used to install a temperature sensor to be tested and calibrated, the patrol meter (3) being connected to a platinum resistor (7), the platinum resistor (7) being placed in the temperature box (4), characterized in that: A removable plate placement plate (8) is provided in the temperature box (4); A plurality of baffles (12) are arranged on the carrier plate (8), and the baffles (12) are parallel to each other and aligned at both ends; A space is formed between adjacent baffles (12) for vertically placing a carrier plate (6) on which a temperature sensor to be tested and calibrated is mounted.

2. The temperature sensor testing and calibration device according to claim 1, characterized in that: A first slide groove (9) and a second slide groove (10) are provided at the top of the carrier plate (8); the first slide groove (9) and the second slide groove (10) are parallel to each other, aligned at both ends and perpendicular to each baffle (12); Two sliding blocks (13) are provided at the bottom of the baffle (12). The two sliding blocks (13) at the bottom of the baffle (12) are placed in the first slide groove (9) and the second slide groove (10) one by one, and are respectively slidably matched with the first slide groove (9) and the second slide groove (10); Both ends of the baffle (12) are provided with positioning portions (20), and a limiting hole row is provided below the positioning portion (20), the limiting hole row comprising a plurality of limiting holes (11), and the limiting holes (11) are evenly distributed along the length direction of the first slide groove (9) or the second slide groove (10); A through hole (15) for use with the limiting hole (11) is provided on the positioning portion (20) at a position corresponding to the row of limiting holes arranged below the positioning portion (20), and a positioning pin for use with the through hole (15) and the limiting hole (11) is provided on the positioning portion (20).

3. The temperature sensor testing and calibration device according to claim 2, characterized in that: A ball (16) is provided at the lower end of the sliding block (13).

4. The temperature sensor testing and calibration device according to claim 3, characterized in that: A ball hole (17) penetrating the ball center is provided in the ball (16); The sliding block (13) is provided with an arc-shaped groove (21) matched with the ball (16), and is provided with a baffle hole (18) extending along the length direction of the baffle (12); A connecting rod (19) penetrating the baffle hole (18) and the ball hole (17) is also provided in the sliding block (13).

5. The temperature sensor testing and calibration device according to claim 4, characterized in that: Both ends of the connecting rod (19) are provided with fixing plates (14), and the fixing plates (14) are fixedly connected to the baffle plate (12).

6. The temperature sensor testing and calibration device according to claim 1, characterized in that: A support frame is provided at the bottom of the carrier plate placement plate (8).

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