Gas sensor testing system capable of simultaneously measuring multiple groups of samples

Abstract

The utility model discloses a gas sensor testing system capable of simultaneously measuring a plurality of groups of samples, the gas sensor testing system comprises an instrument support, a sealing cover and a plurality of probes, a material heating module and a gas heating module are arranged on the instrument support, the front ends of the probes can extend to the material heating module, and the gas heating module is arranged on the sealing cover. The tail end of each probe is connected with a digital multimeter, the probes, the material heating module and the gas heating module are covered by the sealing cover, and a sealed space is formed by the sealing cover and the instrument support. According to the utility model, each probe is independently connected with different digital multimeters to realize the effect of various combined measurement, and a double-temperature-zone independent temperature control system realizes the sensing performance test of a test material on high-temperature boil-off gas at normal temperature. The gas sensing performance of flexible and rigid substrate materials can be directly tested through probe measurement, and the technical defect that a gas sensor testing system cannot simultaneously measure flexible and rigid substrate samples during gas sensor testing is overcome.

Description

Technical Field

[0001] This utility model relates to a gas sensor testing system, and more particularly to a gas sensor testing system based on testing flexible and rigid gas sensors and realizing various joint tests. Background Technology

[0002] As the core component of gas sensors, gas sensing materials directly determine the overall performance of the sensor through their intrinsic properties such as sensitivity, selectivity, and response time. Material development requires iterative processes of synthesis, characterization, and optimization, heavily reliant on extensive experimental verification of key parameters like formulation ratios, doping concentrations, and sintering processes. However, traditional testing methods employ a single-sample serial approach: a process of "injecting standard gas → static testing of sample 1 → cleaning the gas chamber → replacing the sample → testing sample 2," requiring 2-4 hours to complete the testing of four samples. This is not only inefficient but also prone to cross-contamination due to residual gas during chamber cleaning, affecting test repeatability. More critically, traditional rigid testing platforms cannot simulate bending (0-120°) on flexible substrates, making it impossible to determine the flexible sensing performance of materials during the development of flexible devices. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a gas sensor testing system that can simultaneously measure the gas sensing performance of four samples, and measure the flexibility of flexible sensing materials under different degrees of bending according to its own needs, based on testing flexible and rigid gas sensors and realizing various joint measurements.

[0004] Technical solution: This utility model discloses a gas sensor testing system for simultaneously measuring multiple sets of samples, including an instrument support, a sealing cover, and multiple probes. The instrument support is equipped with a material heating module and a gas heating module. The upper surface of the material heating module is flush with the upper surface of the instrument support, and the upper surface of the gas heating module is lower than the upper surface of the instrument support. The tips of the probes are in contact with the material heating module. Each probe is connected to a digital multimeter at its end. The sealing cover covers the probes, the material heating module, and the gas heating module, forming a sealed space with the instrument support.

[0005] Furthermore, the probes are tungsten steel bent needles, and there are more than two probes.

[0006] Furthermore, a probe holder is fixedly mounted on the instrument support, and the probe extends to the material heating module after passing through the probe holder.

[0007] Furthermore, the instrument support has multiple through holes, and the probe support has threaded holes at both the top and bottom. A first screw is located at the bottom of the probe support, and the first screw is threadedly connected to the probe support. Furthermore, the upper part of the probe support has symmetrically formed grooves, and a second screw is threadedly connected to the upper end of the probe support. The probe passes through the grooves and is placed on the probe support, and is fixed to the probe support by the second screw.

[0008] Furthermore, a spring and / or washer are provided between the first screw and the bottom of the instrument bracket to better secure the probe bracket.

[0009] Furthermore, a wire is fixedly connected to the tail of the probe. The wire passes through the through hole and extends to the outside of the instrument bracket. The other end of the wire is connected to a digital multimeter.

[0010] Furthermore, the instrument support extends downwards to provide two storage boxes, with the material heating module and the gas heating module respectively placed in one of the storage boxes.

[0011] Furthermore, the material heating module and the storage box of the instrument bracket are connected by a hole for positioning, and the gas heating module and the storage box of the instrument bracket are connected by a hole for positioning.

[0012] Furthermore, both the material heating module and the gas heating module are externally connected to a power source.

[0013] Furthermore, the glass cover consists of a glass baffle and a glass plate, which can be integrally formed or set separately.

[0014] Furthermore, when the glass baffle and the glass plate are molded as a single piece, the bottom edge of the glass baffle is wrapped with silicone.

[0015] Furthermore, when the glass baffle and glass plate are installed separately, the upper and lower edges of the glass baffle are wrapped with silicone.

[0016] The aforementioned silicone sealant enhances the airtightness of the glass cover.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following advantages: (1) Each probe of the present invention is connected by an independent wire, and different digital multimeters can be connected through independent wires to achieve the effect of various joint tests. (2) The present invention adopts a dual-temperature zone independent temperature control system. By adjusting the gas evaporation temperature and the material test temperature, the sensing performance test of room temperature materials to high temperature evaporating gas can be realized. (3) The present invention can directly realize the gas sensing performance test of flexible and rigid substrate materials through probe measurement. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the gas sensor testing system of this utility model;

[0019] Figure 2 This is a schematic diagram of the upper support mechanism of the instrument stand;

[0020] Figure 3 These are the main sectional view and the top view of the gas sensor testing system of this utility model without the sealing cover, where a is the main sectional view and b is the top view;

[0021] Figure 4 This is the front view of the gas sensor testing system of this utility model.

[0022] In the diagram: 1. Upper glass plate; 2. Instrument support; 3. Glass baffle; 4. Probe; 5. Material heating module; 6. Wire; 7. Probe support; 8. Screw; 9. Gas heating module; 10. Screw; 11. Spring; 12. Gasket. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0024] like Figure 1-4 As shown, the gas sensor testing system for simultaneously measuring multiple samples according to this utility model includes an instrument support 2, a sealing cover, and multiple probes 4. The instrument support 2 has storage boxes; one storage box contains two material heating modules 5, and the other storage box contains a gas heating module 9. The upper surface of the material heating module 5 is flush with the upper surface of the instrument support 2, while the upper surface of the gas heating module 9 is 3mm lower than the upper end of the instrument support 2 to allow for the addition of the liquid to be tested into the gas heating module 9. The probes 4 are tungsten steel bent needles. To resist gas corrosion, the needle diameter is 0.5mm, the needle length is 28mm, the bending arc is 135°, the bent portion length is 10mm, and the needle tip diameter is 0.005mm. The needle tip of the probe 4 contacts the material heating module 5. The sealing cover encloses the probes 4, the material heating module 5, and the gas heating module 9, forming a sealed space with the instrument support 2.

[0025] like Figure 2As shown, the instrument bracket 2 is made of 304 stainless steel and has an aluminum oxide coating, giving it good corrosion resistance and insulation. Two rows of eight through holes are arranged side-by-side on the side of the instrument bracket 2 closest to the material heating module 5. Eight probe brackets 7 are placed in the eight through holes closest to the material heating module 5. Each probe bracket 7 has threaded holes at both the upper and lower parts. A first screw 10 is threaded to the lower part of each probe bracket 7, passing through the through holes and threadedly connecting to the probe bracket 7, thus fixing the probe bracket 7 to the instrument bracket 2. A spring 11 with a washer 12 is provided between the first screw 10 and the bottom of the instrument bracket 2, using the spring force to better secure the probe bracket 7. The upper part of each probe bracket 7 has symmetrically symmetrical grooves. Probes 4 pass through these grooves and are placed on the probe bracket 7. A second screw 8 is threaded to the upper end of each probe bracket 7, fixing the probe 4 to the probe bracket 7. The tail of probe 4 is soldered with wire 6, which extends through 8 other through holes to the outside of instrument bracket 2. The other end of wire 6 is connected to a digital multimeter.

[0026] like Figure 1 As shown, the sealing cover consists of a glass baffle 3 and a glass plate 1. The glass baffle 3 is wrapped with silicone on both the top and bottom, which allows the silicone at the bottom of the glass baffle 3 to rub against the instrument bracket 2 and the silicone at the top to rub against the glass plate 1, thereby ensuring the airtightness of the sealed space.

[0027] like Figure 4 As shown, the material heating module 5 is positioned and connected to the storage box of the instrument holder 2 via holes, and the gas heating module 9 is also positioned and connected to the storage box of the instrument holder 2 via holes. Both the material heating module 5 and the gas heating module 9 are externally connected to a power source.

[0028] Working principle:

[0029] The test material is placed on the material heating module 5, and the heating module 5 is adjusted to a suitable temperature. The probe 4 contacts the test material, and the probe 4 is connected to a digital multimeter via wire 6 to achieve real-time resistance measurement. Test liquid is injected into the gas heating module 9 to evaporate the gas. The glass baffle 3 and the upper glass plate 1 are placed on the instrument support 2 to achieve a sealing effect. After the test, the upper glass plate 1 is opened to allow the gas to escape, thus achieving gas desorption.

Claims

1. A gas sensor testing system for simultaneously measuring multiple groups of samples, characterized in that, The instrument includes an instrument stand (2), a sealing cover, and multiple probes (4). The instrument stand (2) is equipped with a material heating module (5) and a gas heating module (9). The upper surface of the material heating module (5) is flush with the upper surface of the instrument stand (2), and the upper surface of the gas heating module (9) is lower than the upper surface of the instrument stand (2). The tips of the probes (4) are in contact with the material heating module (5). Each probe (4) is connected to a digital multimeter at its end. The sealing cover covers the probes (4), the material heating module (5), and the gas heating module (9), forming a sealed space with the instrument stand (2).

2. The gas sensor testing system according to claim 1, characterized in that, The probe (4) is a tungsten steel bent needle, and there are more than two probes (4).

3. The gas sensor testing system according to claim 1, characterized in that, A probe holder (7) is fixed on the instrument support (2), and the probe (4) extends to the material heating module (5) after passing through the probe holder (7).

4. The gas sensor testing system according to claim 3, characterized in that, The instrument bracket (2) has multiple through holes, and the upper and lower parts of the probe bracket (7) are provided with threaded holes. The bottom of the probe bracket (7) is provided with a first screw (10), which passes through the through holes and is threadedly connected to the probe bracket (7).

5. The gas sensor testing system according to claim 4, characterized in that, The upper part of the probe holder (7) is symmetrically provided with grooves. The upper end of the probe holder (7) is threaded with a second screw (8). The probe (4) passes through the groove and is placed on the probe holder (7). The probe (4) is fixed on the probe holder (7) by the second screw (8).

6. The gas sensor testing system according to claim 4, characterized in that, A spring (11) and / or a pad (12) are provided between the first screw (10) and the bottom of the instrument bracket (2) to better fix the probe bracket (7).

7. The gas sensor testing system according to claim 4, characterized in that, The probe (4) is fixedly connected to a wire (6). The wire (6) passes through the through hole and extends to the outside of the instrument bracket (2). The other end of the wire (6) is connected to a digital multimeter.

8. The gas sensor testing system according to claim 1, characterized in that, Both the material heating module (5) and the gas heating module (9) are externally connected to a power source.

9. The gas sensor testing system according to any one of claims 1-8, characterized in that, The glass cover consists of a glass baffle (3) and a glass plate (1), which can be integrally formed or set separately.

10. The gas sensor testing system according to claim 9, characterized in that, When the glass baffle (3) and the glass plate (1) are integrally formed, the bottom edge of the glass baffle (3) is wrapped with silicone. When the glass baffle (3) and the glass plate (1) are set separately, the upper and lower edges of the glass baffle (3) are wrapped with silicone.

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