Testing tool and testing method for response time of gas sensor

Abstract

The invention relates to the technical field of sensor testing, in particular to a gas sensor response time testing tool and method, and the gas sensor response time testing tool comprises a testing housing which is internally provided with a testing gas chamber and a placement gas chamber which are communicated with each other; a mounting position for mounting a gas sensor is arranged on the moving seat; the driving part is used for driving the moving seat to move, so that the testing air chamber and the placing air chamber are communicated with each other or isolated from each other; wherein when the testing gas chamber is isolated from the placing gas chamber, the testing gas chamber is used for being filled with testing gas, and the mounting position is located in the placing gas chamber; and when the testing air chamber is communicated with the placing air chamber, the mounting position is positioned in the testing air chamber. The test precision and the test efficiency of the gas sensor can be effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of sensor testing, and in particular, to a test tooling and a test method for testing the response time of a gas sensor. Background Art

[0002] Gas sensors are mainly used to monitor the gas concentration in a specific space. When the concentration reaches or exceeds the specified value, an alarm needs to be generated within a specified time. For example, to monitor the gas concentrations of carbon dioxide, carbon monoxide, or formaldehyde in a room, and an alarm can be given in time after the standard is exceeded to remind relevant personnel to take certain measures. Currently, common gas sensors include MOX sensors, which monitor gases based on the chemical adsorption and desorption of gases on the sensor surface and can effectively monitor and feedback gas concentration values. Since the response time of the gas sensor to the gas concentration is particularly important and can timely remind relevant personnel to quickly take measures, corresponding test tooling is required to accurately test the response time of gas sensors such as MOX sensors.

[0003] The patent document with the publication number CN211955398U discloses a rapid measurement device for the response time of a gas sensor, including multiple gas chambers connected by a selection device. The selection device includes a sensor chamber, a controllable switch, and a test interface. The sensor chamber is connected to multiple gas chambers, and the opening and closing of the connection channels with each gas chamber are controlled by the controllable switch. During measurement, gases with set parameters are first introduced into each chamber until the gas parameters are stable, and then the opening and closing of the controllable switch are selected to connect the sensor chamber to different gas chambers, so as to quickly measure the response of the sensor under test under different gas parameters. In this solution, since the sensor chamber is immovable, it takes a certain amount of time for the gas in the gas chamber to enter the sensor chamber, thus reducing the test accuracy of the gas sensor.

[0004] The patent document with the publication number CN104330531B discloses a method and device for testing the rapid response characteristics of a gas sensor device, which adopts a piston control system to control the reciprocating motion of the piston according to the gas compression ratio and stretching ratio, compress and expand the target gas in the cylinder, and test the response characteristics of the gas sensor during the gas compression and stretching processes. This solution can accelerate the gas mixing effect and flow rate, but since the sensor still cannot move, the gas concentration value around the sensor cannot be effectively guaranteed.

[0005] The patent document with the publication number CN105486811A discloses a test device for the fast response characteristics of a gas sensor device, which includes a first cavity and a second cavity. The first cavity and the second cavity are separated by a partition. There is a through hole on the partition, and a switching valve is provided in the first cavity, and the switching valve can cover the through hole; a sample rack, a second driving motor and a closing valve are provided in the second cavity. The sample rack is opposite to the through hole. One end of the sample rack is used to hold the test gas sensor, the other end of the sample rack is connected to the output shaft of the second driving motor, and the closing valve is connected to the sample rack. This device enables the gas sensor to switch positions in two relatively closed cavities with different target gas concentrations. Although the sensor is movably arranged in this solution, the sensor can be in the position to be measured. However, when the sensor enters the first cavity from the second cavity, part of the gas in the second cavity will be pushed by the closing valve and enter the first cavity to a certain extent, thus causing a certain interference to the concentration value in the first cavity, thereby reducing the test accuracy.

[0006] In summary, in the existing test tooling, it is impossible to have both the test gas concentration value in the gas chamber being accurate and the gas sensor being able to quickly be in the environment of this gas concentration value. Therefore, the above solutions cannot effectively control the test accuracy, ultimately resulting in low test efficiency. Summary of the Invention

[0007] In order to solve the problem that the existing test tooling in the above cannot effectively control the test accuracy, ultimately resulting in low test efficiency, the present application provides a sensor response time test tooling and a test method.

[0008] In the first aspect, a gas sensor response time test tooling provided by the present application adopts the following technical solutions: A gas sensor response time test tooling includes: A test housing, which is internally provided with a test gas chamber and a placement gas chamber that are connected and communicated; A moving seat, and an installation position for installing a gas sensor is provided on the moving seat; A driving member, which drives the moving seat to move so that the test gas chamber and the placement gas chamber are connected and communicated or isolated; Wherein, when the test gas chamber and the placement gas chamber are isolated, the test gas chamber is used to fill the test gas, and the installation position is located in the placement gas chamber; when the test gas chamber and the placement gas chamber are connected and communicated, the installation position is located in the test gas chamber.

[0009] By adopting the above technical solution, before the test, the sensor is located in the placement chamber and isolated from the placement chamber. The test chamber is filled with the test gas, so that the gas concentration value in the test chamber can be effectively controlled. During the test, the driving member drives the moving seat to move, thereby driving the gas sensor to move, so that the gas sensor can quickly be in the test chamber. Therefore, it can be ensured that at the starting time of the test, the gas sensor can quickly be located in the test chamber with accurate gas concentration. Therefore, the above solution can effectively improve the test accuracy and test efficiency of the gas sensor.

[0010] Optionally, it further includes: a gas storage device. The test housing is provided with an air inlet and an air outlet, and the gas storage device is communicated with or disconnected from the air inlet. A gas analyzer, the intake end of the gas analyzer is communicated with the air outlet, and the outlet end of the gas analyzer is communicated with the outside or with the air inlet of the test housing.

[0011] By adopting the above technical solution, before the test, the test gas is introduced into the test housing through the gas storage device. The gas enters from the air inlet and exits from the air outlet, and the gas concentration value in the test chamber is monitored in real time through the gas analyzer, so that the initial concentration value in the test chamber is more controllable. At the same time, when the gas concentration value in the test chamber does not reach the preset concentration value, at this time, the gas flows out of the gas analyzer and then enters the outside, so that the original gas in the test chamber can be effectively replaced. When the gas concentration value in the test chamber reaches the preset concentration value, at this time, the gas flows out of the gas analyzer and then enters the test chamber, so that the resources of the test gas can be saved, thereby reducing the test cost.

[0012] Optionally, the air inlet and the air outlet are at different heights.

[0013] By adopting the above technical solution, setting the air inlet and the air outlet at different heights can further accelerate the replacement efficiency of the original gas in the test chamber.

[0014] Optionally, when the test chamber is communicated with the placement chamber, the installation position is located between the air inlet and the air outlet.

[0015] By adopting the above technical solution, during the test, at this time, the driving member effectively drives the installation position to be between the air inlet and the air outlet, and the initial concentration value in this area is more accurate and has less error than the gas concentration value at the corners of the test chamber, thereby further improving the accuracy of the test tool for testing the response time of the gas sensor.

[0016] Optionally, the test housing is provided with an opening communicated with the placement chamber, and a cover plate is covered at the opening. The cover plate is provided with a connecting wire for electrically connecting with the sensor, and the connecting wire penetrates through the cover plate.

[0017] By adopting the above technical solution, during the test, the cover plate can reduce the situation that external gas enters the test chamber through the placement chamber and interferes with the gas concentration value in the test chamber. Therefore, the accuracy of the test tool for testing the response time of the gas sensor can be further improved.

[0018] Optionally, an annular partition is provided inside the test housing, one end of the annular partition is blocked by the cover plate, and the other end is communicated with the test chamber or blocked by the moving seat.

[0019] By adopting the above technical solution, the cooperation of the annular partition with the cover plate and the moving seat can enable the gas sensor to be as isolated from the test chamber as possible before the test, and during the test, the gas sensor can quickly be in the test chamber.

[0020] Optionally, a sealing gasket for abutting against the annular partition is provided on the moving seat.

[0021] By adopting the above technical solution, the sealing gasket can further ensure that the gas sensor and the test chamber are always isolated before the test, reducing the situation that the gas in the test chamber may enter the placement chamber and cause certain errors to the monitoring of the gas sensor. By ensuring the sealing performance, the interference of external gas or the gas in the placement chamber on the gas concentration in the test chamber can be reduced.

[0022] Optionally, the driving member includes a single-rod cylinder and an external air source connected by an air pipe. The cylinder body of the single-rod cylinder is fixed in the test chamber, the piston rod of the single-rod cylinder is fixedly connected to the moving seat, and a reversing valve for controlling the telescopic movement of the piston rod is provided on the air pipe; and / or the ratio of the volume of the test chamber to the volume of the placement chamber is greater than or equal to 100.

[0023] By adopting the above technical solution, the single-rod cylinder and the external air source can accurately control the movement of the moving seat, enabling the gas sensor to quickly reach a preset gas concentration value. When the moving seat moves, the gas in the placement chamber may enter the test chamber, thereby diluting the gas concentration value in the test chamber. By increasing the ratio of the volume of the test chamber to the volume of the placement chamber, the influence of dilution can be minimized as much as possible. At the same time, by controlling the movement of the moving seat through the single-rod cylinder and the reversing valve, the stability of the movement of the moving seat is improved.

[0024] Optionally, it further includes a monitoring module, the monitoring module is used to be electrically connected to the gas sensor to obtain the monitoring data of the gas sensor; and / or A barometer for testing the air pressure value in the test chamber is provided on the test housing.

[0025] By adopting the above technical solution, the monitoring module can effectively obtain the data of the gas sensor, so as to accurately obtain the concentration value monitored by the gas sensor and record the response time required when reaching the preset value. The barometer can obtain the air pressure value inside the test housing to ensure the safety of the test.

[0026] In a second aspect, the present application provides a method for testing the response time of a gas sensor. Based on the above test tooling for the response time of a gas sensor, the following technical solution is adopted: A test tooling and a test method for the response time of a gas sensor include the following steps: Install the gas sensor at the installation position, start the driving member to isolate the test gas chamber from the placement gas chamber, and introduce the test gas into the test gas chamber to displace the original gas in the test gas chamber; Start the driving member to connect the test gas chamber with the placement gas chamber, place the gas sensor inside the test gas chamber, and record the starting time simultaneously. The gas sensor contacts the test gas in the test gas chamber and monitors it. When the gas concentration value monitored by the gas sensor reaches the preset value, record the ending time, and the response time is the time difference between the starting time and the ending time.

[0027] By adopting the above technical solution, it can effectively ensure that at the starting time, the gas sensor can be inside the test gas chamber, and it can ensure that the gas concentration in the test gas chamber is consistent with the preset concentration value at this time. Therefore, it can effectively improve the test accuracy and test efficiency of the gas sensor.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the test, the driving member drives the moving seat to move, thereby driving the gas sensor to move, so that the gas sensor can quickly be inside the test gas chamber. Therefore, it can ensure that at the starting time of the test, the gas sensor can quickly be located inside the test gas chamber with accurate gas concentration. Therefore, the above solution can effectively improve the test accuracy and test efficiency of the gas sensor; 2. Setting the inlet and outlet at different heights can further accelerate the replacement efficiency of the original gas in the test gas chamber; the sealing gasket can ensure the sealing performance to reduce the interference of external gas or the gas in the placement gas chamber on the gas concentration in the test gas chamber; 3. Controlling the movement of the moving seat through the single-rod cylinder and the reversing valve improves the stability of the movement of the moving seat. The monitoring module can effectively obtain the data of the gas sensor, so as to accurately obtain the concentration value monitored by the gas sensor and record the response time required when reaching the preset value. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the test tooling for the response time of the gas sensor in the embodiment of the present application (the state during gas replacement before the test); Figure 2 It is a schematic structural diagram of the gas sensor response time test tooling according to an embodiment of the present application (the state after gas replacement before testing); Figure 3 It is a schematic structural diagram of the gas sensor response time test tooling according to an embodiment of the present application (the state during testing).

[0030] Description of the reference numerals: 1. Test housing; 11. Test gas chamber; 12. Placement gas chamber; 13. Inlet; 14. Outlet; 2. Gas storage device; 3. Gas analyzer; 4. Monitoring module; 5. Moving seat; 6. Driving member; 61. Single-rod cylinder; 62. Directional control valve; 7. Cover plate; 8. Annular partition; 9. Pressure gauge; 10. Gas sensor. Detailed implementation manners

[0031] The following Figure 1 - Figure 3 in conjunction with the attached drawings, further detailed description of the present application will be given.

[0032] It should be noted that in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present application 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 should not be construed as a limitation to the present application.

[0033] An embodiment of the present application discloses a gas sensor response time test tooling and a test method.

[0034] In a first aspect, an embodiment of the present application discloses a gas sensor response time test tooling.

[0035] Referring to Figure 1 , a gas sensor response time test tooling includes a test housing 1, a gas storage device 2, a gas analyzer 3, a monitoring module 4, a moving seat 5, and a driving member 6. A test gas chamber 11 and a placement gas chamber 12 are provided in the test housing 1 and are in communication with each other. In this embodiment, the placement gas chamber 12 is located above the test gas chamber 11. In other embodiments, the positions of the test gas chamber 11 and the placement gas chamber 12 can also be adjusted.

[0036] It should be noted that in this embodiment, the gas sensor involved is a MOX gas sensor as an example, and in other embodiments, other types of gas sensors can also be tested.

[0037] Referring to Figure 1, the gas storage device 2 is used to store the test gas and introduce the test gas into the test housing 1, and the gas analyzer 3 is used to analyze the gas condition in the test housing 1 so that the concentration value of the test gas in the test chamber 11 meets the preset value. The gas storage device 2 and the gas analyzer 3 work together to adjust the gas concentration value in the test chamber 11.

[0038] Referring to Figure 1 , an installation position for installing the gas sensor 10 is provided on the moving seat 5, and the monitoring module 4 is used to be electrically connected to the gas sensor 10 to obtain the monitoring data of the gas sensor 10. The driving member 6 drives the moving seat 5 to move, so that the test chamber 11 and the placement chamber 12 are connected or isolated.

[0039] Among them, when the test chamber 11 and the placement chamber 12 are isolated, the test chamber 11 is used to fill the test gas, and the installation position is located in the placement chamber 12. Isolating the test chamber 11 from the placement chamber 12 before the test can effectively ensure the accuracy of the concentration value of the test gas in the test chamber 11.

[0040] When the test chamber 11 and the placement chamber 12 are connected, the installation position is located in the test chamber 11. During the test, the test chamber 11 is connected to the placement chamber 12, so that the driving member 6 drives the moving seat 5 to move into the test chamber 11, thereby ensuring the concentration value of the gas where the gas sensor 10 is located, and further ensuring the accuracy of the test.

[0041] Referring to Figure 1 , the test housing 1 is provided with an air inlet 13 and an air outlet 14, and the gas storage device 2 is connected or disconnected from the air inlet 13. The inlet end of the gas analyzer 3 is connected to the air outlet 14, and the outlet end of the gas analyzer 3 is connected to the outside or to the air inlet 13 of the test housing 1.

[0042] Before the test, the gas storage device 2 is filled with pure test gas. Referring to Figure 1 In the direction of the arrow in, first start the gas storage device 2 to introduce the test gas into the test chamber 11. The test gas enters from the air inlet 13 and is partially mixed with the original gas in the test chamber 11. The mixed gas flows out from the air outlet 14 and then enters the gas analyzer 3. Through the gas analyzer 3, the concentration value of the gas in the test chamber 11 can be analyzed in real time. Therefore, the controllability of the gas concentration in the test chamber 11 can be effectively improved.

[0043] Continue to refer to Figure 1 In the direction of the arrow in, when the gas concentration value does not reach the preset value, the detected gas flows out from the outlet end of the gas analyzer 3 and is introduced outside the test housing 1. Therefore, at this time, the original gas in the test chamber 11 can be effectively replaced, and the gas concentration in the test chamber 11 can be further ensured.

[0044] Referring to Figure 2In the direction of the arrow in the figure, when the gas concentration reaches a preset value, the gas storage device 2 stops supplying gas and controls the gas outlet of the gas analyzer 3 to be connected with the gas inlet 13 of the test shell 1 so that the gas with the concentration reaching the standard can flow back into the test gas chamber 11, thereby saving test gas resources and reducing the test cost.

[0045] It is understandable that the flow direction of the gas flowing out of the gas analyzer 3 can be controlled by setting a pipeline and a gas three-way valve to ensure that the gas can flow out to the external air or flow back into the test gas chamber 11.

[0046] In order to further speed up the replacement and discharge speed of the original gas in the test air chamber 11 , the air inlet 13 and the air outlet 14 are located at different heights.

[0047] In this embodiment, the air inlet 13 is located below the air outlet 14. When the gas enters from the air inlet 13 below, the test gas located below continuously squeezes the original gas in the test chamber 11, and enables the original gas to be quickly discharged from the air outlet 14. If the air inlet 13 and the air outlet 14 are at the same height, the test gas may flow directly out of the air outlet 14 very quickly, thus requiring a longer replacement time, and thus requiring a large volume of test gas to complete the replacement, thereby increasing the test cost. The staggered setting of the air inlet 13 and the air outlet 14 can not only effectively ensure the gas replacement efficiency, but also reduce the test cost.

[0048] It is understandable that the air inlet 13 may also be located above the air outlet 14. When the gas enters from the upper air inlet 13, it can also squeeze and push the original gas to flow out from the lower air outlet 14, thereby also improving the replacement efficiency.

[0049] Reference Figure 1 The test housing 1 is provided with an opening connected to the placement air chamber 12, and the opening is covered with a cover plate 7, on which a connection line for electrically connecting to the sensor is provided, the connection line passes through the cover plate 7, and the other end of the connection line is electrically connected to the monitoring module 4, so that the monitoring module 4 can effectively obtain the gas concentration data of the gas sensor 10. The gas sensor 10 can be conveniently placed on the placement movable seat 5 by setting the cover plate 7. At the same time, when the test air chamber 11 is connected to the placement air chamber 12, in order to prevent external gas from entering or internal test gas from overflowing, the cover plate 7 can effectively isolate the external gas from the test air chamber 11 to ensure the accuracy of the test gas concentration.

[0050] An annular partition plate 8 is provided in the test housing 1, one end of which is blocked by the cover plate 7, and the other end is connected to the test air chamber 11 or blocked by the movable seat 5. In this embodiment, the cover plate 7, the annular partition plate 8 and the movable seat 5 together enclose the above-mentioned placement air chamber 12.

[0051] ReferenceFigure 1 , the driving member 6 includes a single-rod cylinder 61 and an external air source connected by an air pipe. The cylinder block of the single-rod cylinder 61 is fixed inside the test air chamber 11, and the piston rod of the single-rod cylinder 61 is fixedly connected to the moving seat 5. A reversing valve 62 for controlling the telescopic movement of the piston rod is provided on the air pipe. By adjusting the direction of the reversing valve 62, the position of the gas entering the cylinder of the single-rod cylinder from the external air source can be adjusted, thereby controlling the telescopic movement of the piston rod.

[0052] Before the test, by adjusting the reversing valve 62, the air flow is made to flow according to Figure 1 the arrow direction in the air pipe, so that the piston rod drives the moving seat 5 to move until it abuts against the annular partition 8, and further effectively isolates the test air chamber 11 from the placement air chamber 12. Therefore, the test gas in the gas storage device 2 can only enter the test air chamber 11, further ensuring the accuracy of the gas concentration value in the test air chamber 11.

[0053] Referring to Figure 1 , a sealing gasket for abutting against the annular partition 8 is provided on the moving seat 5. Setting a sealing gasket between the moving seat 5 and the annular partition 8 can further isolate the test air chamber 11 from the placement air chamber 12, so that the test gas will not leak from the test air chamber 11 into the placement air chamber 12, further reducing the influence on the initial concentration value of the gas sensor 10.

[0054] During the test, by reversely adjusting the reversing valve 62, the air flow is made to flow according to Figure 3 the arrow direction in the air pipe, so that the piston rod drives the moving seat 5 away from the annular partition 8, so that the test air chamber 11 is communicated with the placement air chamber 12, and the gas sensor 10 located on the moving seat 5 can quickly be in the test air chamber 11 with a set concentration value.

[0055] In order to further ensure that the error of the gas concentration value around the gas sensor 10 at the start is smaller, when the test air chamber 11 is communicated with the placement air chamber 12, the installation position is between the air inlet 13 and the air outlet 14. The concentration value of the test gas in the middle area has a smaller error compared to the corners of the test housing 1, and thus is more accurate.

[0056] Among them, when the single-rod cylinder drives the moving seat 5 away from the annular partition 8 to connect the test air chamber 11 with the placement air chamber 12, at this time, part of the original gas in the placement air chamber 12 will enter the test air chamber 11, which may dilute the concentration value of the test gas in the test air chamber 11. Therefore, in this application, the ratio of the volume of the test air chamber 11 to the volume of the placement air chamber 12 is greater than or equal to 100.

[0057] Specifically, in this embodiment, the volume of the test chamber 11 is 23 L, and the volume of the placement chamber 12 is 0.19 L. When the volume of the test gas is 100 times or more that of air, the dilution can be ignored, thus having little impact on the test of the response time of the gas sensor 10.

[0058] Referring to Figure 1 , a pressure gauge 9 for testing the air pressure value in the test chamber 11 is provided on the test housing 1. The pressure gauge 9 can provide real-time feedback on the gas pressure in the test chamber 11, thereby reducing the occurrence of safety accidents caused by possible overfilling of gas.

[0059] The implementation principle of this embodiment is as follows: Before the test, the driving member 6 drives the moving seat 5 to move to isolate the test chamber 11 from the placement chamber 12. At this time, the gas storage device 2 is started to introduce the test gas into the test chamber 11, and the gas analyzer 3 is used to record and feedback the gas concentration value in the test chamber 11 in real time. When the preset gas concentration value is reached, the charging of the test gas is stopped.

[0060] During the test, the driving member 6 drives the moving seat 5 to move in the reverse direction to connect the test chamber 11 with the placement chamber 12. At this time, the gas sensor 10 is located in the test chamber 11, monitors the gas concentration value and transmits the acquired data to the monitoring module 4. The monitoring module 4 records the time required for the gas concentration value output by the gas sensor 10 to reach the preset value, and this time is the response time of the gas sensor 10.

[0061] In a second aspect, the embodiments of the present application also disclose a method for testing the response time of a gas sensor.

[0062] Referring to Figure 1 and Figure 3 , a method for testing the response time of a gas sensor, based on the above-mentioned test tooling for the response time of a gas sensor, includes the following steps: Install the gas sensor 10 at the installation position, start the driving member 6 to isolate the test chamber 11 from the placement chamber 12, and introduce the test gas into the test chamber 11 to displace the original gas in the test chamber 11; Start the driving member 6 to connect the test chamber 11 with the placement chamber 12, place the gas sensor 10 in the test chamber 11, and record the starting time at the same time. The gas sensor 10 comes into contact with the test gas in the test chamber 11 and monitors it. When the gas concentration value monitored by the gas sensor 10 reaches the preset value, record the ending time, and the response time is the time difference between the starting time and the ending time.

[0063] A method for testing the response time of a gas sensor in this application can ensure that at the starting time, the gas sensor 10 can be effectively located inside the test chamber 11, and can ensure that the gas concentration inside the test chamber 11 is consistent with the preset concentration value at this time. Therefore, it can effectively improve the test accuracy and test efficiency of gas sensors 10 such as MOX gas sensors.

[0064] The above are all preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A test tool for the response time of a gas sensor, characterized in that, Comprising: A test housing (1) with a connected test gas chamber (11) and a placement gas chamber (12) provided therein; A moving seat (5), on which there is an installation position for mounting a gas sensor (10); A driving member (6) that drives the moving seat (5) to move so that the test gas chamber (11) and the placement gas chamber (12) are connected or isolated; Wherein, when the test gas chamber (11) and the placement gas chamber (12) are isolated, the test gas chamber (11) is used to fill with test gas, and the installation position is located within the placement gas chamber (12); when the test gas chamber (11) and the placement gas chamber (12) are connected, the installation position is located within the test gas chamber (11).

2. The gas sensor response time testing tooling according to claim 1, wherein Further comprising: A gas storage device (2), the test housing (1) is provided with an air inlet (13) and an air outlet (14), and the gas storage device (2) is connected or disconnected from the air inlet (13); A gas analyzer (3), the inlet end of the gas analyzer (3) is connected to the air outlet (14), and the outlet end of the gas analyzer (3) is connected to the outside or to the air inlet (13) of the test housing (1).

3. The gas sensor response time testing tooling according to claim 2, wherein: The air inlet (13) and the air outlet (14) are at different heights.

4. The gas sensor response time test tooling according to claim 3, wherein: When the test gas chamber (11) and the placement gas chamber (12) are connected, the installation position is located between the air inlet (13) and the air outlet (14).

5. The gas sensor response time test tooling according to claim 1, characterized in that: The test housing (1) is provided with an opening communicating with the placement gas chamber (12), and a cover plate (7) is covered at the opening. The cover plate (7) is provided with a connecting wire for electrically connecting with the gas sensor (10), and the connecting wire penetrates through the cover plate (7).

6. The gas sensor response time test tooling according to claim 5, characterized in that: An annular partition (8) is provided inside the test housing (1). One end of the annular partition (8) is blocked by the cover plate (7), and the other end is connected to the test gas chamber (11) or blocked by the moving seat (5).

7. The gas sensor response time test tooling according to claim 6, characterized in that: A sealing gasket for abutting against the annular partition (8) is provided on the moving seat (5).

8. The gas sensor response time test tooling according to any one of claims 1 to 7, characterized in that: The driving member (6) includes a single-rod cylinder (61) and an external air source connected by an air pipe. The cylinder body of the single-rod cylinder (61) is fixed inside the test gas chamber (11), the piston rod of the single-rod cylinder (61) is fixedly connected to the moving seat (5), and a reversing valve (62) for controlling the telescopic movement of the piston rod is provided on the air pipe; and / or The ratio of the volume of the test gas chamber (11) to the volume of the placement gas chamber (12) is greater than or equal to 100.

9. The gas sensor response time test tooling according to any one of claims 8, characterized in that: Further comprising a monitoring module (4), the monitoring module (4) is used for electrically connecting with the gas sensor (10) to obtain the monitoring data of the gas sensor (10); and / or A pressure gauge (9) for testing the air pressure value inside the test gas chamber (11) is provided on the test housing (1).

10. A method for testing the response time of a gas sensor, based on the gas sensor response time testing tooling according to any one of claims 9, characterized in that, Including the following steps: Install the gas sensor (10) at the installation position, start the driving member (6) to isolate the test gas chamber (11) from the placement gas chamber (12), and introduce test gas into the test gas chamber (11) to displace the original gas inside the test gas chamber (11); The starting driver (6) connects the test gas chamber (11) with the placement gas chamber (12), places the gas sensor (10) in the test gas chamber (11), and records the starting time simultaneously. The gas sensor (10) contacts the test gas in the test gas chamber (11) and monitors it. When the gas concentration value monitored by the gas sensor (10) reaches the preset value, the ending time is recorded, and the response time is the time difference between the starting time and the ending time.

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