Pressure testing device of IMU (Inertial Measurement Unit)

Abstract

The utility model provides a pressure testing device of an IMU (Inertial Measurement Unit), which relates to the pressure testing technology and comprises a knob, a stud, a pressure sensor, a pressing block, a double-head probe and an evaluation plate, the knob is fixedly connected with the first side of the stud, the second side of the stud is fixedly connected with the first side of the pressure sensor, the second side of the pressure sensor is fixedly connected with the first side of the pressing block, the second side of the pressing block is arranged on the first side of a product to be tested, and the second side of the pressing block is arranged on the second side of the product to be tested. The electrical contact point of the second side of the to-be-tested product is electrically connected with the first side probe head of the double-end probe, and the second side probe head of the double-end probe is electrically connected with the first side of the evaluation board. According to the arrangement mode, by adjusting the screwing angle of the knob, the pressure applied to the product can be accurately controlled, and the performance of the IMU product can be comprehensively evaluated.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure testing, in particular to a pressure testing device for an IMU. Background Art

[0002] An inertial measurement unit (IMU) is an electronic device that integrates an accelerometer and a gyroscope. It is usually used in the form of a MEMS chip or module in aerospace, navigation systems, and drones. During the initial calibration and actual application, MEMS chips or modules may encounter external pressure. In order to further study the impact of pressure on the performance of MEMS chips or modules, most of the pressure test devices currently used apply pressure to the product under test through a fixture.

[0003] However, most of the fixtures on the market currently lack pressure adjustment functions, which makes it impossible to explore the performance of MEMS chips or modules under different pressures. Therefore, how to apply different pressures to MEMS chips or modules in real time has become an urgent problem to be solved. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an IMU pressure testing device, which can accurately control the pressure applied to the product by adjusting the rotation angle of the knob, and detect the pressure in real time through the pressure sensor. In addition, the evaluation board customizes the circuit according to the product characteristics, which can comprehensively evaluate the performance of the IMU product.

[0005] The utility model provides a pressure test device for an IMU, the pressure test device comprising: a knob, a stud, a pressure sensor, a pressure block, a double-headed probe and an evaluation board;

[0006] The knob is fixedly connected to the first side of the stud, the second side of the stud is fixedly connected to the first side of the pressure sensor, the second side of the pressure sensor is fixedly connected to the first side of the pressure block, the second side of the pressure block is arranged above the first side of the product to be tested, the electrical contact point on the second side of the product to be tested is electrically connected to the first side needle of the double-ended probe, and the second side needle of the double-ended probe is electrically connected to the first side of the evaluation board.

[0007] Furthermore, the knob includes at least two operating parts that are arranged in parallel and opposite to each other.

[0008] Furthermore, the pressure testing device also includes an upper cover;

[0009] A threaded hole is provided on the first side of the upper cover; a receiving cavity is provided inside the upper cover; the receiving cavity receives at least a part of the stud, the pressure sensor and the pressure block;

[0010] The second side of the stud extends into the accommodating cavity through the threaded hole and is fixedly connected to the first side of the pressure sensor.

[0011] Furthermore, a avoidance groove is provided on the third side of the upper cover.

[0012] Furthermore, the pressure testing device also includes a pressure display;

[0013] The pressure display is fixedly connected to the pressure sensor via a wire harness passing through the avoidance groove.

[0014] Furthermore, the pressure testing device also includes a mounting seat;

[0015] The mounting seat is provided with a mounting cavity, and the product to be tested is fixed in the mounting cavity by the pressing block.

[0016] Furthermore, the pressure testing device also includes a rotating shaft;

[0017] The first side of the mounting seat is fixedly connected to the second side of the upper cover via a rotating shaft.

[0018] Furthermore, the pressure testing device also includes a support seat;

[0019] The first side of the support seat is fixedly connected to the second side of the mounting seat;

[0020] The support seat is provided with a perforation;

[0021] The needle head on the first side of the double-ended probe extends through the through hole of the support seat into the installation cavity and is electrically connected to the electrical contact point on the second side of the product to be tested.

[0022] Furthermore, the pressure testing device also includes a base;

[0023] The first side of the base is fixedly connected to the second side of the evaluation board.

[0024] The utility model provides a pressure testing device for an IMU, in which a knob is connected to the top of a stud by a fixed connection. The top of the pressure sensor is fixedly connected to the bottom of the stud. The bottom of the pressure sensor is fixedly connected to the top of a pressure block. The bottom of the pressure block contacts the top of the product to be tested for applying pressure. The pad or pin at the bottom of the product to be tested is fixedly connected to the top needle of a double-headed probe. The bottom needle of the double-headed probe is fixedly connected to the top of an evaluation board. The pressure testing device provided by the utility model can accurately control the pressure applied to the product by adjusting the rotation angle of the knob, and measure the pressure in real time through a pressure sensor. In addition, the evaluation board customizes the circuit according to the product characteristics, and can comprehensively evaluate the performance of the IMU product.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is one of the structural schematic diagrams of a pressure testing device of an IMU provided by an embodiment of the utility model;

[0028] Figure 2 This is the second structural schematic diagram of an IMU pressure testing device provided in an embodiment of the utility model.

[0029] Icons: 10-knob; 20-stud; 30-pressure sensor; 40-pressure block; 50-double-head probe; 60-evaluation board; 101-operating part; 70-upper cover; 701-accommodating cavity; 80-pressure display; 90-mounting seat; 901-mounting cavity; 110-rotating shaft; 120-support seat; 130-base; 140-product to be tested; 100-pressure test device. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. The orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship usually placed when the utility model product is used, or the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. The terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. Without more constraints, an element defined by the phrase "comprising a..." does not exclude the existence of other identical elements in the process, method, article or apparatus comprising the element.

[0032] It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings.

[0034] See also Figure 1 , Figure 1 This is one of the structural schematic diagrams of an IMU pressure testing device provided in an embodiment of the utility model.

[0035] like Figure 1As shown in , the pressure testing device 100 includes: a knob 10, a stud 20, a pressure sensor 30, a pressure block 40, a double-headed probe 50 and an evaluation board 60. The knob 10 is fixedly connected to the first side of the stud 20 by soldering, the second side of the stud 20 is fixedly connected to the first side of the pressure sensor 30 by screws, the second side of the pressure sensor 30 is fixedly connected to the first side of the pressure block 40 by screws, the second side of the pressure block 40 is arranged above the first side of the product to be tested 140, the electrical contact point on the second side of the product to be tested 140 is electrically connected to the first side needle of the double-headed probe 50, and the second side needle of the double-headed probe 50 is electrically connected to the first side of the evaluation board 60.

[0036] In this embodiment, the knob 10 has a bidirectional rotation function and can be rotated both clockwise and counterclockwise. The pressure sensor 30 is fixed to the stud 20 by a screw. By rotating the knob 10, the upper and lower positions of the stud 20 can be accurately adjusted, thereby driving the pressure sensor 30 and the pressure block 40 to make corresponding up and down adjustments. This adjustment enables the pressure block 40 to apply different degrees of pressure to the product to be tested 140 according to demand. During the process of the pressure block 40 applying pressure, the pressure sensor 30 located between the stud 20 and the pressure block 40 senses and collects the reaction force generated by the pressure, thereby being used to react to the pressure applied to the product to be tested 140. The pads or pins on the second side of the product to be tested 140 are electrically connected to the first side of the evaluation board 60 through the first side needle of the double-headed probe 50, and the evaluation board 60 performs performance evaluation on the product to be tested 140 subjected to different pressures.

[0037] It is understandable that in other embodiments not shown, the knob 10 and the first side of the stud 20 may also be fixedly connected by screws, gluing, snap-fitting or other methods, which are not limited here.

[0038] It is understandable that in other embodiments not shown, the second side of the stud 20 and the first side of the pressure sensor 30 may also be fixedly connected by other means such as soldering, gluing, and clamping, which is not limited here.

[0039] It is understandable that in other embodiments not shown, the second side of the pressure sensor 30 and the first side of the pressure block 40 may also be fixedly connected by other means such as soldering, gluing, and clamping, which is not limited here.

[0040] See also Figure 2 , Figure 2 This is the second structural schematic diagram of an IMU pressure testing device provided in an embodiment of the utility model.

[0041] like Figure 2 As shown in , further, the knob 10 includes at least two operating parts 101 arranged in parallel and opposite to each other, aiming to provide a more convenient force application point for easy operation.

[0042] Furthermore, the pressure test device 100 further includes an upper cover 70; the first side of the upper cover 70 is close to the knob 10; the first side of the upper cover 70 is provided with a threaded hole; the upper cover 70 is provided with a receiving chamber 701 inside; the threaded hole is connected to the stud 20; the receiving chamber 701 receives at least a part of the stud 20, the pressure sensor 30 and the pressure block 40; the second side of the stud 20 extends into the receiving chamber 701 through the threaded hole and is fixedly connected to the first side of the pressure sensor 30 through a screw. In this embodiment, the upper cover 70 plays a role in protecting and fixing the internal components in the pressure test device 100, and provides structural support and connection points through the threaded hole.

[0043] Furthermore, a avoidance groove is provided on the third side of the upper cover 70 .

[0044] Furthermore, the pressure testing device 100 also includes a pressure display 80; the pressure display 80 is fixedly connected to the pressure sensor 30 via a wiring harness passing through the avoidance groove.

[0045] In this embodiment, the pressure display 80 is fixedly connected to the pressure sensor 30 through the wire harness passing through the avoidance groove, so that the value of the applied pressure can be displayed in real time for easy observation. Since the pressure sensor 30 will adjust its position as the stud 20 moves up and down, the avoidance groove ensures the smooth passage of the wire harness and also provides space for the wire harness to move up and down.

[0046] Furthermore, the pressure testing device also includes a mounting seat 90 ; a mounting cavity 901 is provided in the mounting seat 90 , and the product 140 to be tested is fixed in the mounting cavity 901 by a pressure block 40 .

[0047] In this embodiment, the mounting cavity 901 is used to accommodate the product 140 to be tested.

[0048] Furthermore, the pressure testing device 100 further includes a rotating shaft 110 ; the first side of the mounting seat 90 is fixedly connected to the second side of the upper cover 70 via the rotating shaft 110 .

[0049] In this embodiment, the upper cover 70 can be rotated relative to the mounting seat 90 through the rotating shaft 110, so as to take and place the product. This structure is a flip-type structure.

[0050] Furthermore, the pressure testing device 100 also includes a support seat 120; the first side of the support seat 120 is connected to the second side of the mounting seat 90 by a screw; the support seat is provided with a through hole; the first side needle of the double-headed probe 50 passes through the through hole of the support seat 120 and extends into the mounting cavity 901 and is fixedly connected to the electrical contact point on the second side of the product to be tested 140.

[0051] In this embodiment, the support base 120 is used to support the product to be tested 140 .

[0052] It is understandable that in other embodiments not shown, the first side of the support seat 120 and the second side of the mounting seat 90 may also be fixedly connected by other means such as soldering, gluing, and clamping, which are not limited here.

[0053] Furthermore, the pressure testing device 100 further includes a base 130 ; a first side of the base 130 is connected to a second side of the evaluation board 60 via screws.

[0054] In this embodiment, the evaluation board 60 is fixed on the base 130. The base 130 is used to support and fix the evaluation board 60 to ensure the stability of the entire device.

[0055] It is understandable that the first side of the base 130 and the second side of the evaluation board 60 may also be fixedly connected by soldering, gluing, clamping or other methods, which are not limited here.

[0056] The utility model provides an IMU pressure testing device, which can accurately control the pressure applied to the product by adjusting the rotation angle of the knob, and detect the pressure in real time through the pressure sensor. In addition, the evaluation board customizes the circuit according to the product characteristics, and can comprehensively evaluate the performance of the IMU product.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them; although the utility model is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalent; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the utility model. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments instead of other features, the combination of features of different embodiments means that they are within the scope of the utility model and form different embodiments. For example, in the above claims, any one of the embodiments claimed for protection can be used in any combination. The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the utility model, and should not be regarded as admitting or suggesting in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. A pressure test device for an IMU, characterized in that: The pressure testing device comprises: a knob, a stud, a pressure sensor, a pressure block, a double-headed probe and an evaluation board; The knob is fixedly connected to the first side of the stud, the second side of the stud is fixedly connected to the first side of the pressure sensor, the second side of the pressure sensor is fixedly connected to the first side of the pressure block, the second side of the pressure block is arranged above the first side of the product to be tested, the electrical contact point on the second side of the product to be tested is electrically connected to the first side needle of the double-ended probe, and the second side needle of the double-ended probe is electrically connected to the first side of the evaluation board.

2. The pressure testing device according to claim 1, characterized in that: The knob includes at least two operating parts which are arranged in parallel and opposite to each other.

3. The pressure testing device according to claim 1, characterized in that: The pressure testing device also includes an upper cover; A threaded hole is provided on the first side of the upper cover; a receiving cavity is provided inside the upper cover; the receiving cavity receives at least a part of the stud, the pressure sensor and the pressure block; The second side of the stud extends into the accommodating cavity through the threaded hole and is fixedly connected to the first side of the pressure sensor.

4. The pressure testing device according to claim 3, characterized in that: The third side of the upper cover is provided with an avoidance groove.

5. The pressure testing device according to claim 4, characterized in that: The pressure testing device also includes a pressure display; The pressure display is fixedly connected to the pressure sensor via a wire harness passing through the avoidance groove.

6. The pressure testing device according to claim 3, characterized in that: The pressure testing device also includes a mounting seat; The mounting seat is provided with a mounting cavity, and the product to be tested is fixed in the mounting cavity by the pressing block.

7. The pressure testing device according to claim 6, characterized in that: The pressure testing device also includes a rotating shaft; The first side of the mounting seat is fixedly connected to the second side of the upper cover via a rotating shaft.

8. The pressure testing device according to claim 6, characterized in that: The pressure testing device also includes a support seat; The first side of the support seat is fixedly connected to the second side of the mounting seat; The support seat is provided with a perforation; The needle head on the first side of the double-ended probe extends through the through hole of the support seat into the installation cavity and is electrically connected to the electrical contact point on the second side of the product to be tested.

9. The pressure testing device according to claim 8, characterized in that: The pressure testing device also includes a base; The first side of the base is fixedly connected to the second side of the evaluation board.

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