Humidity sensor precision test fixture

Abstract

The application provides a humidity sensor precision test tool for measuring the precision of a patch type humidity sensor, the opposite sides of the patch type humidity sensor are respectively provided with a row of pad slots, and the tool comprises an upper shell, a plurality of test areas are included in the upper shell, each test area comprises two rows of conductive columns which are oppositely and spacedly arranged, the conductive columns are used for electrically connecting with the pad slots, the distance between the two rows of conductive columns is equal to the width of the patch type humidity sensor, and the patch type humidity sensor is clamped between the two rows of conductive columns; a lower shell is used for cooperating with the upper shell to form an accommodating space; and a circuit board is arranged in the accommodating space and electrically connected with the conductive columns, and is used for testing the precision of the patch type humidity sensor. The humidity sensor precision test tool is simple, convenient, stable and high in working efficiency.

Description

Technical Field

[0001] This application relates to the field of accuracy testing technology, and in particular to a humidity sensor accuracy testing fixture. Background Technology

[0002] A humidity sensor is a sensor device equipped with a humidity-sensitive element that can be used to measure humidity. In some equipment fields, high accuracy testing of humidity sensors is required, and surface-mount humidity sensors are used for humidity measurement. Currently, the accuracy testing method for surface-mount humidity sensors mainly involves soldering them into the actual product to measure humidity, and then comparing the measurement with a standard hygrometer for manual accuracy judgment, lacking dedicated accuracy testing fixtures. Utility Model Content

[0003] In view of this, the purpose of this application is to propose a humidity sensor accuracy testing fixture to solve the above-mentioned technical problems.

[0004] This application provides a humidity sensor accuracy testing fixture for measuring the accuracy of a patch-type humidity sensor. The patch-type humidity sensor has a row of pad slots on opposite sides. The humidity sensor accuracy testing fixture includes: an upper housing with multiple test areas, each test area including two rows of conductive posts spaced apart from each other. The conductive posts are used to abut against the pad slots to achieve electrical connection. The distance between the two rows of conductive posts is equal to the width of the patch-type humidity sensor, used to hold the patch-type humidity sensor between the two rows of conductive posts; a lower housing that cooperates with the upper housing to form a receiving space; and a circuit board disposed in the receiving space and electrically connected to the conductive posts for testing the accuracy of the patch-type humidity sensor.

[0005] Furthermore, the top surface of the circuit board is connected to multiple conductive pillar groups, each of the conductive pillar groups includes two rows of conductive pillars arranged at intervals, and the height of the top of the conductive pillars is greater than or equal to the height of the top surface of the patch humidity sensor; the upper housing is provided with multiple first through holes, and the conductive pillars pass through the first through holes, and each test area includes one of the conductive pillar groups.

[0006] Furthermore, an insulating sleeve is fitted onto the conductive post, and the insulating sleeve is located between the upper housing and the circuit board; in the same group of conductive posts, a spring is connected between the insulating sleeves on two opposite conductive posts.

[0007] Furthermore, the top surface of the circuit board is connected to a plurality of first displays, and the upper housing is provided with a plurality of second through holes; the first displays pass through the second through holes, and each test area includes one first display, which is used to display the current humidity measurement value of the patch humidity sensor located in the corresponding test area.

[0008] Furthermore, a standard humidity sensor is connected to the top surface of the circuit board. The standard humidity sensor includes a second display, and a third through hole is provided on the upper housing. The second display passes through the third through hole and is used to display the humidity reference value currently measured by the standard humidity sensor.

[0009] Furthermore, the top surface of the circuit board is connected to multiple indicator lights, and the upper housing is provided with multiple fourth through holes; the indicator lights pass through the fourth through holes, and each test area includes one indicator light, which is used to indicate whether the test accuracy of the patch humidity sensor in the corresponding test area is qualified.

[0010] Furthermore, a switch is connected to the top surface of the circuit board, and a fifth through hole is provided in the upper housing; the switch passes through the fifth through hole, and the switch is used to open and close the humidity sensor accuracy testing fixture.

[0011] Furthermore, a power input terminal is connected to one side of the circuit board, and a power control module is connected to the bottom of the circuit board. The power control module is electrically connected to the power input terminal, the indicator light, the first display, and the second display, respectively. A socket is provided on one side of the lower housing, and the socket is electrically connected to the power input terminal. The socket is used to connect to an external power source.

[0012] Furthermore, a control unit is connected to the bottom surface of the circuit board. The control unit is electrically connected to the switch, the first display, the standard humidity sensor, the conductive post, the power control module, and the indicator light. The control unit is used to determine the test accuracy of the patch-type humidity sensor based on the humidity measurement value and the humidity reference value.

[0013] Furthermore, a connecting platform is provided at the corner of the lower housing, and the circuit board is abutted against the connecting platform; a first connecting hole is provided at the corner of the circuit board, and a second connecting hole is provided at the corner of the upper housing, and the first connecting hole and the second connecting hole are connected to the connecting platform by screws.

[0014] As described above, this application provides a humidity sensor accuracy testing fixture, comprising: an upper housing including multiple test areas, each test area including two rows of relatively spaced conductive posts, the conductive posts being used to abut against the pad slots to achieve electrical connection, the spacing between the two rows of conductive posts being equal to the width of the patch humidity sensor, used to hold the patch humidity sensor between the two rows of conductive posts; a lower housing, which cooperates with the upper housing to form a receiving space; and a circuit board, disposed within the receiving space and electrically connected to the conductive posts, used to test the accuracy of the patch humidity sensor. By setting multiple test areas on the upper housing, multiple patch humidity sensors can be tested simultaneously, resulting in high work efficiency; by setting two rows of conductive posts in each test area to hold the patch humidity sensor, testing stability can be improved, and disassembly and assembly are convenient; the conductive posts cooperating with the pad slots not only secure the patch humidity sensor but also serve as an electrical connection, simplifying the structure; the conductive posts being electrically connected to the circuit board allows for the acquisition of measurement values ​​from the patch humidity sensor for accuracy judgment. This humidity sensor accuracy testing fixture is simple, convenient, highly stable, and highly efficient. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram illustrating the principle of humidity sensor accuracy testing in related technologies.

[0017] Figure 2 This is a schematic diagram of a humidity sensor accuracy testing fixture structure in an embodiment of this application.

[0018] Figure 3 for Figure 2 Exploded view of the accuracy testing fixture for a medium humidity sensor.

[0019] Figure 4 for Figure 3 A schematic diagram of the structure of a patch-type humidity sensor.

[0020] Figure 5 for Figure 3 A schematic diagram of the upper and middle shell structure.

[0021] Figure 6 for Figure 3 A schematic diagram of the front structure of the circuit board.

[0022] Figure 7 This is a side view of two rows of conductive pillars within the test area.

[0023] Figure 8 for Figure 3 A schematic diagram of the reverse side structure of the circuit board.

[0024] Figure 9 for Figure 3 Schematic diagram of the lower and middle shell.

[0025] Reference numerals: 1. Surface mount humidity sensor; 1-1. Solder pad groove; 2. Upper housing; 2-1. Test area; 2-2. First through hole; 2-3. Second through hole; 2-4. Third through hole; 2-5. Fourth through hole; 2-6. Fifth through hole; 2-7. Second connection hole; 3. Circuit board; 3-1. Conductive post; 3-2. Insulating sleeve; 3-3. Spring; 3-4. First display; 3-5. Standard humidity sensor; 3-6. Indicator light; 3-7. Switch; 3-8. Power input terminal; 3-9. Power control module; 3-10. Control unit; 3-11. First connection hole; 4. Lower housing; 4-1. Socket port; 4-2. Connecting platform. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0028] A humidity sensor is a sensor device equipped with a humidity-sensitive element that can be used to measure humidity. Humidity sensors include voltage output integrated humidity sensors, frequency output integrated humidity sensors, and monolithic intelligent humidity sensors, etc.

[0029] In some equipment fields, environmental humidity requirements are very high, so the testing accuracy of humidity sensors is also required to be high, such as an accuracy not exceeding ±4%RH. Surface mount humidity sensors (SMD-HS) can be used for humidity measurement. Surface mount humidity sensors are small in size, have a fast response speed, strong anti-interference ability, high accuracy, and are compatible with various microcontrollers.

[0030] Current methods for testing the accuracy of patch-type humidity sensors include: Figure 1As shown, the main purpose is to weld the sensor into the actual product to measure humidity. Humidity data is read via a wireless handheld device, and the test accuracy is calculated based on the readings of a standard hygrometer. This accuracy is then compared to the ±4%RH accuracy requirement to determine if the patch-type humidity sensor meets the required standards. The testing process is cumbersome, involves only a limited number of humidity sensors, requires manual interpretation, is tedious, has high error rates, requires significant manpower, is time-consuming, and has low efficiency, impacting delivery schedules.

[0031] Therefore, a precision testing fixture for patch-type humidity sensors is needed to solve the above problems. Although there are humidity sensor precision testing fixtures in related technologies that can provide some precision testing algorithms, these fixtures are not suitable for patch-type humidity sensors to be installed and tested.

[0032] like Figure 4 The diagram shows the structure of a surface mount humidity sensor. The surface mount humidity sensor includes a main body and an electronic circuit board. The two long sides of the electronic circuit board are respectively provided with multiple semi-cylindrical pad slots. The pad slots are the pins of the surface mount humidity sensor. The whole structure forms a special structure. In use, the pad slots can be soldered to the circuit board of the actual product.

[0033] The testing fixtures for related technologies, such as setting up slots to fit into the sensor body and setting up contacts to connect separately to the sensor pins, are complex in structure and not suitable for mounting on surface-mount humidity sensors, so they cannot be used to test their accuracy.

[0034] The following describes specific embodiments in conjunction with... Figures 2 to 9 The technical solution of this application will be described in detail below.

[0035] Some embodiments of this application provide a humidity sensor accuracy testing fixture for measuring the accuracy of a patch-type humidity sensor 1, such as... Figure 4 As shown, the patch-type humidity sensor 1 has a row of solder pad slots 1-1 on each of its opposite sides, as... Figure 2 and Figure 3 As shown, the humidity sensor accuracy testing fixture includes: an upper housing 2, comprising multiple test areas 2-1, each test area 2-1 including two rows of relatively spaced conductive posts 3-1, the conductive posts 3-1 being used to abut against the solder pad groove 1-1 to achieve electrical connection, the spacing between the two rows of conductive posts 3-1 being equal to the width of the patch humidity sensor 1, for securing the patch humidity sensor 1 between the two rows of conductive posts 3-1; a lower housing 4, which cooperates with the upper housing 2 to form an accommodating space; and a circuit board 3, disposed within the accommodating space and electrically connected to the conductive posts 3-1, for testing the accuracy of the patch humidity sensor 1.

[0036] The model of the patch-type humidity sensor 1 is, for example, SH10. Figure 4 As shown, the surface mount humidity sensor 1 includes an electronic circuit board and a main body soldered onto the electronic circuit board. The electronic circuit board is a rectangular board, and each of its two long sides has a plurality of semi-cylindrical pad slots 1-1, for example, five pad slots 1-1. The pad slots 1-1 are made of metal, and four of the pad slots 1-1 are used as pins, for example, ground pin (GND), data pin (DATA), serial clock pin (SCK), and 3.3V power supply pin, respectively. The other pad slots 1-1 can be used as spares.

[0037] like Figure 2 and Figure 3 As shown, the humidity sensor accuracy testing fixture includes an upper housing 2, a lower housing 4, and a circuit board 3. The upper housing 2 is, for example, a plate-like structure, made of, for example, plastic, with dimensions for example, 196mm × 136mm. The lower housing 4 is, for example, a cuboid structure, made of, for example, plastic, with dimensions for example, 200mm × 140mm × 20mm. The upper housing 2 and the lower housing 4 cooperate to form an accommodating space, within which the circuit board 3 is housed for protection.

[0038] like Figure 2 As shown, the top surface of the upper housing 2 is provided with multiple test areas 2-1. Each test area 2-1 can be equipped with a patch-type humidity sensor 1. The test areas 2-1 can be arranged in an array, for example, in a 4×4 array.

[0039] Each test area 2-1 contains two rows of conductive posts 3-1. The conductive posts 3-1 are, for example, cylindrical pins made of metal. Each row contains, for example, five conductive posts 3-1. Each conductive post 3-1 is electrically connected to a pad slot 1-1 of the surface-mount humidity sensor 1. The spacing between the two rows of conductive posts 3-1 is equal to the width of the surface-mount humidity sensor 1, allowing the sensor to be secured between the two rows. In practical applications, a spacing deviation of ±5% is permissible.

[0040] By setting multiple test areas 2-1 on the upper housing 2, multiple patch humidity sensors 1 can be tested simultaneously, resulting in high work efficiency. By setting two rows of conductive posts 3-1 in each test area 2-1 to engage the patch humidity sensor 1, the test stability can be improved, and disassembly and assembly are also convenient. The conductive posts 3-1 cooperate with the pad grooves 1-1, which not only secure the patch humidity sensor 1 but also serve as electrical connections, simplifying the structure. The conductive posts 3-1 are electrically connected to the circuit board 3, which can collect the measured values ​​of the patch humidity sensor 1 for accuracy judgment. The judgment method can be the same as the aforementioned manual judgment method, or it can adopt the accuracy judgment algorithm in related technologies, without any specific limitation.

[0041] This humidity sensor accuracy testing fixture is simple, convenient, highly stable, and efficient. It can simultaneously install 16 sets of surface-mount humidity sensors, and is also applicable to multi-pin humidity sensors, achieving versatility and significantly shortening the product testing cycle.

[0042] In some embodiments, such as Figure 5 and Figure 6 As shown, the top surface of the circuit board 3 is connected to multiple conductive pillar groups, each of the conductive pillar groups includes two rows of conductive pillars 3-1 arranged at intervals. The top height of the conductive pillars 3-1 is greater than or equal to the top surface height of the patch-type humidity sensor 1. The upper housing 2 is provided with multiple first through holes 2-2, and the conductive pillars 3-1 penetrate through the first through holes 2-2. Each test area 2-1 includes one of the conductive pillar groups.

[0043] like Figure 6 As shown, the top surface of circuit board 3 is connected to 16 conductive pillar groups. Each conductive pillar group includes two rows of conductive pillars 3-1 arranged at intervals, i.e., the two rows of conductive pillars 3-1 within the aforementioned test area 2-1. Figure 7 As shown, the height of the top of the conductive post 3-1 is greater than or equal to the height of the top surface of the patch humidity sensor 1. This can protect the patch humidity sensor 1 and ensure a stable connection.

[0044] like Figure 5 As shown, the upper housing 2 is provided with multiple first through holes 2-2, each corresponding to a conductive post 3-1, with the conductive post 3-1 penetrating through the first through hole 2-2, as shown. Figure 7 As shown, the exposed conductive post 3-1 can be used with the patch-type humidity sensor 1, while the conductive post 3-1 inside the housing space can be stably connected to the circuit board 3 to ensure the test effect.

[0045] In some embodiments, such as Figure 7 As shown, an insulating sleeve 3-2 is fitted onto the conductive post 3-1, and the insulating sleeve 3-2 is located between the upper housing 2 and the circuit board 3; in the same conductive post group, a spring 3-3 is connected between the insulating sleeves 3-2 on two opposite conductive posts 3-1.

[0046] like Figure 7 As shown, each conductive post 3-1 is also fitted with an insulating sleeve 3-2. The insulating sleeve 3-2 is made of, for example, a high molecular polymer. The insulating sleeve 3-2 is located between the upper housing 2 and the circuit board 3. By setting the insulating sleeve 3-2, the conductivity of the conductive post 3-1 in the housing space can be protected, and environmental interference can be avoided to reduce the test effect.

[0047] Within the same test area 2-1, in two rows of conductive posts 3-1, a spring 3-3 connects the insulating sleeve 3-2 of one conductive post 3-1 to the opposite conductive post 3-1 in the other row. The spring 3-3 can be integrally formed with the insulating sleeve 3-2, or it can be separately fitted onto the outside of the insulating sleeve 3-2. The spring 3-3 can restrict the position of the conductive post 3-1, thus preventing the conductive post 3-1 from loosening due to frequent use and thus avoiding problems such as decreased performance when used with the patch-type humidity sensor 1.

[0048] In some embodiments, such as Figure 5 and Figure 6 As shown, the top surface of the circuit board 3 is connected to a plurality of first displays 3-4, and the upper housing 2 is provided with a plurality of second through holes 2-3; the first displays 3-4 penetrate through the second through holes 2-3, and each test area 2-1 includes one first display 3-4, which is used to display the current humidity measurement value of the patch humidity sensor 1 located in the corresponding test area 2-1.

[0049] like Figure 6 As shown, the top surface of circuit board 3 is connected to 16 first displays 3-4, such as LED displays. Each first display 3-4 corresponds to a test area 2-1 and is used to display the current humidity measurement value of the patch-type humidity sensor 1 located in the test area 2-1. Figure 5 As shown, the upper housing 2 is provided with 16 second through holes 2-3, and the second through holes 2-3 are set one-to-one with the first display 3-4. The first display 3-4 passes through the second through holes 2-3, making it convenient for personnel to observe and read the data.

[0050] In some embodiments, such as Figure 5 and Figure 6 As shown, a standard humidity sensor 3-5 is connected to the top surface of the circuit board 3. The standard humidity sensor 3-5 includes a second display. A third through hole 2-4 is provided on the upper housing 2. The second display passes through the third through hole 2-4 and is used to display the humidity reference value currently measured by the standard humidity sensor 3-5.

[0051] like Figure 6 As shown, a standard humidity sensor 3-5 is connected to the top surface of circuit board 3. This sensor offers high testing accuracy. The standard humidity sensor 3-5 includes a second display, such as an LED display, to show the current humidity reference value measured by the sensor. Figure 5 As shown, the upper housing 2 is provided with a third through hole 2-4, through which the second display passes for easy observation and comparison by personnel.

[0052] In some embodiments, such as Figure 5 and Figure 6 As shown, the top surface of the circuit board 3 is connected to multiple indicator lights 3-6, and the upper housing 2 is provided with multiple fourth through holes 2-5; the indicator lights 3-6 pass through the fourth through holes 2-5, and each test area 2-1 includes one indicator light 3-6, which is used to indicate whether the test accuracy of the patch humidity sensor 1 in the corresponding test area 2-1 is qualified.

[0053] like Figure 6 As shown, the top surface of circuit board 3 is connected to 16 indicator lights 3-6, such as LEDs. Each indicator light 3-6 corresponds to a test area 2-1 and is used to indicate whether the test accuracy of the patch-type humidity sensor 1 within test area 2-1 is qualified. Figure 5 As shown, the upper housing 2 is provided with 16 fourth through holes 2-5, and the fourth through holes 2-5 are set one-to-one with the indicator lights 3-6. The indicator lights 3-6 pass through the fourth through holes 2-5, which makes it convenient for personnel to intuitively judge whether the patch-type humidity sensor 1 is qualified.

[0054] In some embodiments, such as Figure 5 and Figure 6 As shown, a switch 3-7 is connected to the top surface of the circuit board 3, and a fifth through hole 2-6 is provided on the upper housing 2; the switch 3-7 passes through the fifth through hole 2-6, and the switch 3-7 is used to open and close the humidity sensor accuracy test fixture.

[0055] like Figure 6 As shown, a switch 3-7, such as a DIP switch, is connected to the top surface of circuit board 3 for opening and closing the test fixture. Figure 5 As shown, the upper housing 2 is provided with a fifth through hole 2-6, and the switch 3-7 is provided with the fifth through hole 2-6 for easy personnel control.

[0056] In some embodiments, such as Figure 8 and Figure 9 As shown, a power input terminal 3-8 is connected to one side of the circuit board 3, and a power control module 3-9 is connected to the bottom surface of the circuit board 3. The power control module 3-9 is electrically connected to the power input terminal 3-8, the indicator light 3-6, the first display 3-4, and the second display, respectively. A socket 4-1 is provided on one side of the lower housing 4. The socket 4-1 is electrically connected to the power input terminal 3-8 and is used to connect an external power source.

[0057] like Figure 8 As shown, a 5V power input terminal 3-8 is connected to one side of circuit board 3, and a power control module 3-9 is connected to the bottom of circuit board 3. This module can convert the voltage to 3.3V to power the devices on circuit board 3, including, for example, indicator lights 3-6, a first display 3-4, and a second display. Figure 9 As shown, a socket port 4-1 is provided on one side of the lower housing 4. The socket port 4-1 is connected to the power input terminal 3-8 via a cable. The socket port 4-1 is used to connect to an external 5V power supply for power supply.

[0058] In some embodiments, such as Figure 8 As shown, a control unit 3-10 is connected to the bottom surface of the circuit board 3. The control unit 3-10 is electrically connected to the switch 3-7, the first display 3-4, the standard humidity sensor 3-5, the conductive post 3-1, the power control module 3-9, and the indicator light 3-6. The control unit 3-10 is used to determine the test accuracy of the patch-type humidity sensor 1 based on the humidity measurement value and the humidity reference value.

[0059] like Figure 8 As shown, a control unit 3-10 is connected to the bottom of circuit board 3. The control unit 3-10 is, for example, an MCU chip. The control unit 3-10 is electrically connected to switch 3-7, first display 3-4, standard humidity sensor 3-5, conductive post 3-1, power control module 3-9 and indicator light 3-6 respectively. The control unit 3-10 can receive the humidity measurement value obtained from conductive post 3-1 and the humidity reference value obtained from standard humidity sensor 3-5, and calculate the test accuracy = |humidity measurement value - humidity reference value| / humidity reference value × 100%. When the test accuracy is greater than 4%, a high-level alarm signal can be sent to indicator light 3-6 to indicate that the product is unqualified.

[0060] In some embodiments, such as Figure 5 , Figure 6 and Figure 9 As shown, a connecting platform 4-2 is provided at the corner of the lower housing 4, and the circuit board 3 is abutted against the connecting platform 4-2; a first connecting hole 3-11 is provided at the corner of the circuit board 3, and a second connecting hole 2-7 is provided at the corner of the upper housing 2. The first connecting hole 3-11 and the second connecting hole 2-7 are connected to the connecting platform 4-2 by screws.

[0061] like Figure 9 As shown, a connecting platform 4-2 is provided at each of the four corners inside the lower housing 4, which can support the circuit board 3. Figure 6 As shown, each of the four corners of the circuit board 3 has a first connecting hole 3-11. Figure 5 As shown, the upper housing 2 has a second connecting hole 2-7 at each of its four corners. M4 screws pass through the first connecting hole 3-11 and the second connecting hole 2-7 and are fixed on the connecting platform 4-2 to realize tooling assembly.

[0062] The specific usage method of this humidity sensor accuracy testing fixture includes installing 16 measuring patch humidity sensors 1 in the test area 2-1, connecting the power supply, turning on the switch 3-7, displaying the current humidity measurement value of the patch humidity sensor 1 on the first display 3-4, and displaying the current humidity reference value measured by the standard humidity sensor 3-5 on the second display. After the readings stabilize, the control unit 3-10 acquires the humidity measurement value and the humidity reference value to calculate the test accuracy. When the test accuracy is greater than 4%, the corresponding indicator light 3-6 is lit, and the unqualified product is recorded.

[0063] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0064] Furthermore, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the apparatus may be shown in block diagram form. This is to prevent the embodiments of this application from being difficult to understand, and it also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully within the understanding of those skilled in the art). In setting forth specific details to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0065] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0066] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A fixture for testing the accuracy of a humidity sensor, characterized in that, For measuring the accuracy of a patch-type humidity sensor, the patch-type humidity sensor has a row of solder pad slots on each of its opposite sides. The humidity sensor accuracy testing fixture includes: The upper housing includes multiple test areas, each of which includes two rows of conductive posts arranged at intervals. The conductive posts are used to abut against the pad groove to achieve electrical connection. The distance between the two rows of conductive posts is equal to the width of the patch humidity sensor, and is used to snap the patch humidity sensor between the two rows of conductive posts. The lower housing, together with the upper housing, forms an accommodating space; A circuit board, disposed within the receiving space and electrically connected to the conductive post, is used to test the accuracy of the patch-type humidity sensor.

2. The humidity sensor accuracy testing fixture according to claim 1, characterized in that, The top surface of the circuit board is connected to multiple conductive pillar groups. Each conductive pillar group includes two rows of conductive pillars arranged at intervals. The height of the top of the conductive pillar is greater than or equal to the height of the top surface of the patch humidity sensor. The upper housing is provided with multiple first through holes, and the conductive pillars pass through the first through holes. Each test area includes one conductive pillar group.

3. The humidity sensor accuracy testing fixture according to claim 2, characterized in that, An insulating sleeve is fitted onto the conductive post, and the insulating sleeve is located between the upper housing and the circuit board; in the same group of conductive posts, a spring is connected between the insulating sleeves on two opposite conductive posts.

4. The humidity sensor accuracy testing fixture according to claim 1, characterized in that, The top surface of the circuit board is connected to multiple first displays, and the upper housing is provided with multiple second through holes; the first displays pass through the second through holes, and each test area includes one first display, which is used to display the current humidity measurement value of the patch humidity sensor located in the corresponding test area.

5. The humidity sensor accuracy testing fixture according to claim 4, characterized in that, A standard humidity sensor is connected to the top surface of the circuit board. The standard humidity sensor includes a second display. A third through hole is provided on the upper housing. The second display passes through the third through hole and is used to display the humidity reference value currently measured by the standard humidity sensor.

6. The humidity sensor accuracy testing fixture according to claim 5, characterized in that, The top surface of the circuit board is connected to multiple indicator lights, and the upper housing is provided with multiple fourth through holes; the indicator lights pass through the fourth through holes, and each test area includes one indicator light, which is used to indicate whether the test accuracy of the patch humidity sensor in the corresponding test area is qualified.

7. The humidity sensor accuracy testing fixture according to claim 6, characterized in that, A switch is connected to the top surface of the circuit board, and a fifth through hole is provided in the upper housing; the switch passes through the fifth through hole and is used to open and close the humidity sensor accuracy testing fixture.

8. The humidity sensor accuracy testing fixture according to claim 7, characterized in that, A power input terminal is connected to one side of the circuit board, and a power control module is connected to the bottom of the circuit board. The power control module is electrically connected to the power input terminal, the indicator light, the first display, and the second display. A socket is provided on one side of the lower housing. The socket is electrically connected to the power input terminal and is used to connect to an external power source.

9. The humidity sensor accuracy testing fixture according to claim 8, characterized in that, The bottom surface of the circuit board is connected to a control unit, which is electrically connected to the switch, the first display, the standard humidity sensor, the conductive post, the power control module and the indicator light. The control unit is used to determine the test accuracy of the patch-type humidity sensor based on the humidity measurement value and the humidity reference value.

10. The humidity sensor accuracy testing fixture according to claim 1, characterized in that, A connecting platform is provided at the corner of the lower housing, and the circuit board is abutted against the connecting platform; a first connecting hole is provided at the corner of the circuit board, and a second connecting hole is provided at the corner of the upper housing, and the first connecting hole and the second connecting hole are connected to the connecting platform by screws.

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