Gas sensor evaluation test device
By designing a gas sensor evaluation and testing device with a simple structure and low production cost, the existing equipment has solved the problem of complex structure and high cost, and the convenient calibration and functional evaluation and testing of gas sensors have been achieved, meeting the needs of the R&D process and making it easy to move.
Patent Information
- Application Number
- CN202421642094.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The existing gas sensor testing equipment has complex structure, high production cost, large volume, and is inconvenient for portability and display, making it difficult to meet the requirements of calibration and functional evaluation and testing during the research and development of gas sensors.
Design a gas sensor evaluation and testing device with simple structure and low production cost, including a box, data connector, gas sensor testing fixture and data cable, which can be easily connected to the test computer and realize the calibration and functional evaluation and testing of the gas sensor.
It realizes fast and convenient calibration and functional evaluation and testing of gas sensors, meeting the requirements for evaluation and testing during the research and development of gas sensors. At the same time, it is easy to move due to its simple structure and light weight.
Smart Images
Figure CN222979564U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of chip testing, and particularly to a gas sensor evaluation test device. Background Art
[0002] At present, during the R & D process of micro-sized gas sensors (such as ammonia, VOC, alcohol gas sensors, etc.) in MEMS (Micro-Electro-Mechanical Systems), it is necessary to apply standard gases to perform sensor calibration, functional evaluation tests, etc. In this process, the gas sensor needs to be placed in an environmental chamber filled with standard gases, and the gas sensor is calibrated and evaluated in the corresponding gas environment. During the calibration and evaluation tests of the gas sensor, it needs to be connected to a test computer to read the data of the gas sensor.
[0003] Currently, general gas sensor testing equipment generally has problems such as complex structure, high manufacturing cost, relatively large volume, and inconvenience in carrying and displaying. In view of this, it is necessary to design a gas sensor evaluation test device with a simple structure, low manufacturing cost, which can be conveniently connected to a test computer, and can calibrate and perform functional evaluation tests on gas sensor samples to meet the evaluation test requirements in the R & D process of gas sensors. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a gas sensor evaluation test device with a simple structure, low manufacturing cost, which can be conveniently connected to a test computer, and can calibrate and perform functional evaluation tests on gas sensors to meet the evaluation test requirements in the R & D process of gas sensors.
[0005] The technical solution of the utility model is as follows:
[0006] A gas sensor evaluation test device includes:
[0007] A box body, on which there is an openable sealed upper cover or a sealed side door;
[0008] A box body data connector, which is hermetically arranged on the side wall of the box body. The box body data connector includes an inner data interface with the interface facing the inside of the box body and an external data interface with the interface facing outwards;
[0009] A gas sensor test fixture for fixing the gas sensor to be tested, which is removably arranged in the box body, includes a test circuit board and a test data interface connected to the test circuit board. The gas sensor fixed on the gas sensor test fixture is electrically connected to the test circuit board;
[0010] A data cable connects the internal data interface and the test data interface. The specific use of a gas sensor evaluation test device of this solution is as follows. Install the gas sensor to be tested on the gas sensor test fixture. The gas sensor fixed on the gas sensor test fixture is electrically connected to the test circuit board. Then, place the gas sensor test fixture into the box body. Connect the internal data interface and the test data interface through the data cable. Connect the external data interface to the test computer. Close and seal the upper cover or the side door. Then, inject the standard gas to be tested into the box body. After that, the gas sensor can be calibrated and functionally evaluated through the test computer. It is convenient to operate, simple in structure, low in manufacturing cost, can be easily connected to the test computer, and can calibrate and functionally evaluate the gas sensor to meet the evaluation test requirements in the R & D process of the gas sensor. On the other hand, due to the simple structure and light weight of a gas sensor evaluation test device of this solution, it is convenient to move.
[0011] Preferably, the box body is surrounded by a bottom plate and side plates on all sides. Its upper end is open, and the upper cover seals and covers the upper end opening of the box body. In this way, the structure of the box body can be further simplified, which is convenient for manufacturing and reduces the manufacturing cost.
[0012] Preferably, a ring of upper cover flange extending outwards is provided on the edge of the upper surface of the upper cover. A sealing gasket matching the upper end surface of the box body is provided on the lower surface of the upper cover flange. In this way, after the upper cover is matched with the upper end opening of the box body, the sealing connection between the upper cover and the upper end opening of the box body can be realized through the sealing gasket.
[0013] Preferably, a gas injection hole is provided on the side wall of the box body, and a detachable sealing plug is provided in the gas injection hole. In this way, the standard gas to be tested can be injected into the box body through the gas injection hole, and then the gas injection hole is sealed with the sealing plug.
[0014] Preferably, data cable interfaces are provided at both ends of the data cable. The data cable interface at one end of the data cable is detachably connected to the internal data interface, and the data cable interface at the other end of the data cable is detachably connected to the test data interface. In this way, the data cable can be conveniently disassembled, or the internal data interface and the test data interface can be conveniently connected through the data cable, which is convenient for actual test operation.
[0015] Preferably, the internal data interface, the external data interface and the test data interface are all USB interfaces, and USB interfaces are provided at both ends of the data cable.
[0016] Preferably, a joint mounting hole is provided on the side wall of the box body. The box body data joint is detachably mounted in the joint mounting hole, and a sealing connection is made between the box body data joint and the side wall of the box body through a sealing ring. In this way, it is convenient for the manufacture of the box body and the sealing installation of the box body data joint, which is convenient for the actual manufacture of a gas sensor evaluation test device.
[0017] Preferably, the box body data connector is one or more. Each box body data connector can be connected to a gas sensor test fixture. If there are multiple box body data connectors, multiple gas sensor test fixtures can be connected simultaneously to calibrate and perform functional evaluation tests on more gas sensors at the same time.
[0018] Preferably, the side wall of the box body is made of a transparent material. In this way, during the process of calibrating and performing functional evaluation tests on the gas sensor, the products and test fixtures inside the box body can be observed, demonstrating the calibration and testing process of the gas sensor sample.
[0019] Preferably, the upper surface of the sealing upper cover is provided with an upper cover handle. In this way, the sealing upper cover can be conveniently opened or closed through the upper cover handle.
[0020] The beneficial effects of the present utility model are: simple structure, low manufacturing cost, capable of being conveniently connected to a test computer to calibrate and perform functional evaluation tests on a gas sensor, so as to meet the evaluation test requirements in the research and development process of the gas sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is an exploded view of a gas sensor evaluation test device of the present utility model.
[0022] Figure 2 is an assembly drawing of a gas sensor evaluation test device of the present utility model.
[0023] Figure 3 is a schematic cross-sectional structure view of a gas sensor evaluation test device of the present utility model.
[0024] In the figure:
[0025] Box body 1, gas injection hole 1.0, sealing plug 1.1, joint installation hole 1.2;
[0026] Sealing upper cover 2, upper cover handle 2.1, sealing washer 2.2, upper cover flange 2.3;
[0027] Box body data connector 3, internal data interface 3.1, external data interface 3.2;
[0028] Gas sensor test fixture 4, test data interface 4.0, test circuit board 4.1, probe assembly 4.2, chip slot board 4.3, pressing plate 4.4;
[0029] Data line 5;
[0030] Gas sensor 6. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0031] Specific Embodiment 1, as follows Figure 1 and Figure 2 and Figure 3 shown, a gas sensor evaluation test device includes a box body 1, a box body data connector 3, a gas sensor test fixture 4, and a data line 5. A sealable upper cover 2 or a sealable side door is provided on the box body 1. The box body data connector 3 is sealingly connected to the side wall of the box body 1. The box body data connector 3 includes an inner data interface 3.1 with an interface facing the inside of the box body 1 and an external data interface 3.2 with an interface facing outwards. The gas sensor test fixture 4 is removably arranged inside the box body 1. The gas sensor test fixture 4 is used to fix the gas sensor to be tested. Multiple gas sensors can be installed on the same gas sensor test fixture 4 at the same time. The gas sensor test fixture 4 includes a test circuit board 4.1 and a test data interface 4.0 connected to the test circuit board 4.1. The gas sensor fixed on the gas sensor test fixture 4 is electrically connected to the test circuit board 4.1. The data line 5 connects the inner data interface 3.1 and the test data interface 4.0.
[0032] The specific use of the gas sensor evaluation test device in this embodiment is as follows. Install the gas sensor to be tested on the gas sensor test fixture 4. The gas sensor fixed on the gas sensor test fixture 4 is electrically connected to the test circuit board 4.1. Then, place the gas sensor test fixture 4 into the box body 1. Connect the inner data interface 3.1 and the test data interface 4.0 through the data line 5. The external data interface 3.2 is connected to the test computer through a signal line. Close the sealable upper cover 2 or the sealable side door. Then, inject the standard gas to be tested into the box body 1. Then, the gas sensor can be calibrated and functionally evaluated through the test computer. Its operation is convenient, the structure is simple, the manufacturing cost is low, it can be conveniently connected to the test computer, and the gas sensor can be calibrated and functionally evaluated to meet the evaluation test requirements in the R & D process of the gas sensor. On the other hand, due to the simple structure and light weight of the gas sensor evaluation test device in this solution, it is convenient to move.
[0033] Specific Embodiment 2, as follows Figure 1 and Figure 2 and Figure 3 shown, a gas sensor evaluation test device includes a box body 1, a box body data connector 3, a gas sensor test fixture 4, and a data line 5.
[0034] A sealable upper cover 2 or a sealable side door is provided on the box body 1. In this embodiment, a sealable upper cover 2 is provided on the box body 1.
[0035] The box body data connector 3 is sealingly connected to the side wall of the box body 1. The box body data connector 3 includes an inner data interface 3.1 with an interface facing the inside of the box body 1 and an external data interface 3.2 with an interface facing outwards.
[0036] The gas sensor test fixture 4 is removably disposed in the box body 1. In this embodiment, the gas sensor test fixture 4 is removably placed on the inner bottom surface of the box body 1. The gas sensor test fixture 4 is used to fix the gas sensor to be tested. Multiple gas sensors can be installed on the same gas sensor test fixture 4 at the same time. The gas sensor test fixture 4 includes a test circuit board 4.1 and a test data interface 4.0 connected to the test circuit board 4.1. The gas sensor fixed on the gas sensor test fixture 4 is electrically connected to the test circuit board 4.1.
[0037] The data line 5 connects the inner data interface 3.1 and the test data interface 4.0.
[0038] The specific use of a gas sensor evaluation test device in this embodiment is as follows: install the gas sensor to be tested on the gas sensor test fixture 4, and the gas sensor fixed on the gas sensor test fixture 4 is electrically connected to the test circuit board 4.1;
[0039] Next, place the gas sensor test fixture 4 into the box body 1; connect the inner data interface 3.1 and the test data interface 4.0 through the data line 5; connect the external data interface 3.2 to the test computer; close the sealed upper cover 2 or the sealed side door;
[0040] Then, inject the standard gas to be tested into the box body 1. Then, the gas sensor can be calibrated and functionally evaluated through the test computer. It is convenient to operate, simple in structure, low in manufacturing cost, and can be conveniently connected to the test computer to calibrate and functionally evaluate the gas sensor to meet the evaluation test requirements in the R & D process of the gas sensor. On the other hand, due to the simple structure and light weight of a gas sensor evaluation test device of this solution, it is convenient to move.
[0041] Specifically, as Figure 1 、 Figure 2 shown, the pressure plate 4.4 is provided with ventilation holes, and the ventilation holes correspond to the chip slots one by one. In this way, after the pressure plate 4.4 presses the gas sensor to be tested in the chip slot, the sensitive material of the gas sensor chip can better contact the standard gas through the ventilation holes to perform corresponding calibration and functional tests.
[0042] As Figure 1 、 Figure 3As shown, the gas sensor test fixture 4 further includes a plurality of probe assemblies 4.2, a chip slot board 4.3 and a pressure plate 4.4. Each probe assembly 4.2 includes a plurality of elastic probes disposed on the chip test circuit board 4.1. The elastic probes in the same probe assembly 4.2 correspond one by one to the PADs on the gas sensor. The specific number and arrangement of the elastic probes in the same probe assembly 4.2 are designed according to the PADs on the actually tested gas sensor 6. The chip slot board 4.3 is provided with chip slots corresponding one by one to the probe assemblies 4.2. The chip slots are used to place the gas sensors 6 to be tested. The bottom of the chip slot is provided with probe through holes. The elastic probes of the probe assembly 4.2 extend into the corresponding chip slots through the probe through holes. The pressure plate 4.4 is used to press the gas sensor to be tested in the chip slot, so that the elastic probes abut against the gas sensor to be tested 6, and the elastic probes and the PADs on the gas sensor are in full contact, so that the gas sensor fixed on the gas sensor test fixture 4 is electrically connected to the test circuit board 4.1. The pressure plate 4.4 is detachably mounted on the gas sensor test fixture 4 through a card slot or a buckle or a bolt. The gas sensor to be tested is actually installed as follows: the gas sensor 6 to be tested is placed in the chip slot, and one gas sensor 6 is placed in one chip slot, and the PADs of the gas sensor 6 face the elastic probes; then, the gas sensor 6 to be tested is pressed in the chip slot with the pressure plate 4.4, so that the elastic probes abut against the gas sensor 6 to be tested, and the elastic probes and the PADs on the gas sensor 6 are in full contact to form a reliable circuit path, and the gas sensor 6 to be tested is connected to the chip test circuit board 4.1.
[0043] Of course, it should be noted that the gas sensor test fixture 4 can also be other gas sensor test fixtures 4 in the prior art, as long as the gas sensor test fixture 4 includes the test circuit board 4.1 and the test data interface 4.0 connected to the test circuit board 4.1, and the gas sensor fixed on the gas sensor test fixture 4 is electrically connected to the test circuit board 4.1.
[0044] Furthermore, as Figure 1 、 Figure 2 shown, a gas injection hole 1.0 is provided on the side wall of the box body 1, and a detachable sealing plug 1.1 is provided in the gas injection hole 1.0. In actual tests, the standard gas to be tested is injected into the box body 1 through the gas injection hole 1.0, and then the gas injection hole 1.0 is sealed by the sealing plug 1.1 to ensure that the gas inside the box body 1 does not leak; then, the gas sensor is calibrated and functionally evaluated through the test computer.
[0045] In this embodiment, two gas injection holes 1.0 are provided on the side wall of the box body 1. Of course, it should be noted that the gas injection holes 1.0 can also be set to one or more according to needs. Multiple gas injection holes 1.0 can be arranged on the same side wall of the box body 1, or on different side walls of the box body 1. A detachable sealing plug 1.1 is provided in each gas injection hole 1.0.
[0046] Further, as Figure 3 shown, data line 5 interfaces are provided at both ends of the data line 5. The data line 5 interface at one end of the data line 5 is detachably connected to the internal data interface 3.1, and the data line 5 interface at the other end of the data line 5 is detachably connected to the test data interface 4.0. In this way, the data line 5 can be conveniently detached, or the internal data interface 3.1 and the test data interface 4.0 can be conveniently connected through the data line 5, facilitating actual test operations.
[0047] In this embodiment, the internal data interface 3.1, the external data interface 3.2, and the test data interface 4.0 are all USB interfaces, and the data line 5 interfaces at both ends of the data line 5 are also USB interfaces.
[0048] Further, as Figure 1 shown, a connector mounting hole 1.2 is provided on the side wall of the box body 1. The box body data connector 3 is detachably mounted in the connector mounting hole 1.2, and the box body data connector 3 and the side wall of the box body 1 are sealed and connected through a sealing ring. Specifically, the box body data connector 3 is provided with a convex ring, a thread, and a nut, and one of the convex ring and the nut is located outside the side wall of the box body 1, and the other is located inside the side wall of the box body 1. The box body data connector 3 is detachably mounted in the connector mounting hole 1.2 by tightening the nut. The sealing ring is located between the convex ring and the side wall of the box body 1, or between the nut and the side wall of the box body 1. In this way, it is convenient to manufacture the box body 1, and it is also convenient to seal and mount the box body data connector 3, facilitating the actual manufacture of a gas sensor evaluation test device.
[0049] As Figure 1 、 Figure 2 shown, the box body data connector 3 is one or more. The connector mounting hole 1.2 corresponds to the box body data connector 3 one by one, and the box body data connector 3 is detachably mounted in the corresponding connector mounting hole 1.2. In this embodiment, the box body data connector 3 is three. Each box body data connector 3 can be connected to a gas sensor test fixture 4. If the box body data connector 3 is three, three gas sensor test fixtures 4 can be connected simultaneously, and more gas sensors can be calibrated and functionally evaluated at the same time.
[0050] Further, as Figure 1As shown, the box body 1 is formed by a bottom plate and side plates around it, with an open upper end, and the sealing upper cover 2 seals and covers the open upper end of the box body 1. In this way, the structure of the box body 1 can be further simplified, facilitating manufacturing and reducing manufacturing costs.
[0051] In this embodiment, the side wall of the box body 1 is made of a transparent material. In this way, during the process of calibrating and functionally evaluating the gas sensor, the products and test fixtures inside the box body 1 can be observed, demonstrating the calibration and testing processes of the gas sensor samples. In this embodiment, the bottom plate, side plates around the box body 1, and the sealing upper cover 2 are made of the same material, all made of a transparent material.
[0052] Furthermore, as Figure 1 、 Figure 3 shown, a ring-shaped upper cover flange 2.3 extending outward is provided at the edge of the upper surface of the sealing upper cover 2, and a sealing gasket 2.2 mating with the upper end surface of the box body 1 is provided on the lower surface of the upper cover flange 2.3. In this way, after the sealing upper cover 2 is fitted with the open upper end of the box body 1, the sealing connection between the sealing upper cover 2 and the open upper end of the box body 1 can be achieved through the sealing gasket 2.2.
[0053] A upper cover handle 2.1 is provided on the upper surface of the sealing upper cover 2. In this way, the sealing upper cover 2 can be conveniently opened or closed through the upper cover handle 2.1. In this embodiment, the upper cover handle 2.1 is made of aluminum alloy material and fixed on the upper surface of the sealing upper cover 2 for opening and closing the sealing upper cover 2.
[0054] The above is only a preferred embodiment of the present invention and does not impose any limitation on the present invention. Any simple modification, change, and equivalent transformation made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims
1. A gas sensor evaluation test device, characterized in that: include: A box body, which is provided with an openable sealed upper cover or a sealed side door; The box data connector is sealed and connected to the side wall of the box, and the box data connector includes an internal data connector with an interface facing the inside of the box and an external data connector with an interface facing outward; A gas sensor test fixture for fixing a gas sensor to be tested, which is removably arranged in the box, includes a test circuit board and a test data interface connected to the test circuit board, and the gas sensor fixed on the gas sensor test fixture is electrically connected to the test circuit board; A data line connects the internal data interface and the test data interface.
2. A gas sensor evaluation test device according to claim 1, characterized in that: The box body is surrounded by a bottom plate and surrounding side plates, and has an upper opening. The sealed upper cover seals and covers the upper opening of the box body.
3. A gas sensor evaluation test device according to claim 2, characterized in that: The upper surface edge of the sealing upper cover is provided with an upper cover flange extending outward, and the lower surface of the upper cover flange is provided with a sealing gasket matched with the upper end surface of the box body.
4. A gas sensor evaluation test device according to claim 1, 2 or 3, characterized in that: A gas injection hole is arranged on the side wall of the box body, and a detachable sealing plug is arranged in the gas injection hole.
5. A gas sensor evaluation test device according to claim 1, 2 or 3, characterized in that: Both ends of the data line are provided with data line interfaces, the data line interface at one end of the data line is detachably connected to the internal data interface, and the data line interface at the other end of the data line is detachably connected to the test data interface.
6. A gas sensor evaluation test device according to claim 1, 2 or 3, characterized in that: The internal data interface, the external data interface and the test data interface are all USB interfaces, and both ends of the data line are provided with USB interfaces.
7. A gas sensor evaluation test device according to claim 1, 2 or 3, characterized in that: A joint installation hole is provided on the side wall of the box body, and the box body data joint is detachably installed in the joint installation hole, and the box body data joint and the side wall of the box body are sealed and connected via a sealing ring.
8. A gas sensor evaluation test device according to claim 1, 2 or 3, characterized in that: The cabinet data connector is one or more.
9. A gas sensor evaluation test device according to claim 1, 2 or 3, characterized in that: The side wall of the box is made of transparent material.
10. A gas sensor evaluation test device according to claim 1, 2 or 3, characterized in that: An upper cover handle is provided on the upper surface of the sealing upper cover.