Flow and communication fusion testing device suitable for NB-IoT intelligent gas meter

Abstract

The utility model discloses a flow and communication fusion testing device suitable for an NB-IoT intelligent gas meter, and the device comprises a wireless testing shielding chamber with a shielding housing, a gas input pipeline, a gas output pipeline, a first filtering waveguide interface, and a second filtering waveguide interface. The first filtering waveguide interface and the second filtering waveguide interface are inserted into through holes formed in an interface panel arranged on the shielding shell, and the first ends of the fuel gas input pipeline and the fuel gas output pipeline are used for being connected with the input end and the output end of fuel gas outside the shielding shell respectively. The first ends of the gas input pipeline and the gas output pipeline penetrate into the first filtering waveguide connector and the second filtering waveguide connector respectively, and the second ends of the gas input pipeline and the gas output pipeline are used for being connected with a gas inlet and a gas outlet of the intelligent gas meter respectively. The pipeline, located in the shielding range, of the gas input pipeline and the gas output pipeline is made of non-metal materials. According to the utility model, the flow and communication integrated test of the intelligent gas meter is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of intelligent gas meter equipment detection, and specifically relates to a flow and communication fusion test device suitable for NB-IoT intelligent gas meters. Background Art

[0002] At present, the ventilation flow test and communication test of NB-IoT smart gas meter equipment are carried out independently, and there is no communication test solution for NB-IoT smart gas meters under flow conditions in the industry. The smart gas meter is first connected to the flow test pipe for flow test, and then the gas pipe is disconnected for independent communication performance test. This test method is inefficient and the test of a single smart gas meter takes a long time.

[0003] Chinese utility model patent CN219656989U discloses a wireless test shielded room suitable for NB-IOT smart gas meters, which tests the communication performance by placing the smart gas meter in a shielded room with an antenna. However, in actual use, it is not enough to just test the communication performance. The flow test of the smart gas meter is also an important test item. Since there is no test device that combines the above two test items in the prior art, the test of the smart gas meter is often time-consuming and inefficient, and cannot meet the needs of rapid testing in industry. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art, combine the flow and communication test functions to facilitate integrated testing, and provide a flow and communication fusion test device suitable for NB-IoT smart gas meters.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A flow and communication fusion test device suitable for an NB-IoT smart gas meter, comprising a wireless test shielding room, the wireless test shielding room comprising a shielding shell, one side of the shielding shell is provided with an interface panel for introducing a test signal, and further comprising one or more filter waveguide interface groups, each of the filter waveguide interface groups comprising a first filter waveguide interface and a second filter waveguide interface, the first filter waveguide interface and the second filter waveguide interface being inserted into a through hole provided on the interface panel;

[0007] It also includes a gas input pipeline and a gas output pipeline, the first ends of the gas input pipeline and the gas output pipeline are both located outside the shielding shell, and are respectively used to connect to the input end and output end of the external gas, the gas input pipeline passes through the first filter waveguide interface, and the gas output pipeline passes through the second filter waveguide interface, the second ends of the gas input pipeline and the gas output pipeline are both located inside the shielding shell, and are respectively used to connect to the air inlet and air outlet of the smart gas meter, and the gas input pipeline and the gas output pipeline are both made of non-metallic materials.

[0008] The fusion test device of the utility model can realize the integrated test of flow and communication of NB-IoT smart gas meters. By setting the first filter waveguide interface and the second filter waveguide interface, a flow test air pipe is introduced to perform flow test without affecting the shielding performance, thereby improving the test efficiency of a single smart gas meter.

[0009] Preferably, the first filter waveguide interface and the second filter waveguide interface both adopt waveguide standard interfaces.

[0010] Preferably, an intermediate pipeline is also provided inside the shielding shell, and the intermediate pipeline is used to connect two or more smart gas meters in series, and the intermediate pipeline includes at least a first intermediate pipeline, the first end of the first intermediate pipeline is used to connect the air outlet of the first smart gas meter, the second end of the first intermediate pipeline is used to connect the air inlet of the second smart gas meter, the air inlet of the first smart gas meter is connected to the second end of the gas input pipeline, and the air outlet of the second smart gas meter is connected to the second end of the gas output pipeline.

[0011] In order to facilitate the distribution of pipelines and save space and cost, the gas input pipeline and the gas output pipeline are both made of rubber or PVC plastic.

[0012] Preferably, the gaps between the outer walls of the first filter waveguide interface and the second filter waveguide interface and the interface panel are filled with a conductive metal mesh to ensure good electrical contact between the shielding body and the interface, thereby ensuring overall shielding performance.

[0013] The flow and communication fusion test device of the utility model can isolate and shield the electromagnetic wave interference of the outdoor environment, test the communication performance, and perform the flow test of the smart gas meter in the shielded room at the same time. It does not affect the overall shielding performance, and can meet the needs of batch testing of NB-IoI smart gas meters. The operation method is simple and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below with reference to the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the installation of the intermediate pipeline of the utility model.

[0017] Explanation of the accompanying drawings: 1-shielding shell; 2-first filter waveguide interface; 3-second filter waveguide interface; 4-gas input pipeline; 5-gas output pipeline; 6-smart gas meter; 7-air inlet; 8-air outlet; 9-first smart gas meter; 10-first intermediate pipeline; 11-second smart gas meter; 12-second intermediate pipeline; 13-third smart gas meter; 14-interface panel. DETAILED DESCRIPTION

[0018] like Figure 1 As shown, the utility model provides a flow and communication fusion test device suitable for NB-IoT smart gas meters, including a wireless test shielding room, the wireless test shielding room includes a shielding shell 1, one side of the shielding shell 1 is provided with an interface panel 14 for introducing a test signal, and also includes one or more filter waveguide interface groups, each filter waveguide interface group includes a first filter waveguide interface 2 and a second filter waveguide interface 3, the first filter waveguide interface 2 and the second filter waveguide interface 3 are inserted into a through hole provided on the interface panel 14;

[0019] It also includes a gas input pipeline 4 and a gas output pipeline 5. The first ends of the gas input pipeline 4 and the gas output pipeline 5 are both located outside the shielding shell 1, and are respectively used to connect with the input end and the output end of the external gas. The gas input pipeline 4 passes through the first filter waveguide interface 2, and the gas output pipeline 5 passes through the second filter waveguide interface 3. The second ends of the gas input pipeline 4 and the gas output pipeline 5 are both located inside the shielding shell 1, and are respectively used to connect with the air inlet and the air outlet of the smart gas meter. The gas input pipeline 4 and the gas output pipeline 5 are both made of non-metallic materials, such as rubber or PVC plastic, so as to facilitate the distribution of pipelines, save space and cost. By setting the gas input pipeline 4 and the gas output pipeline 5 made of non-metallic materials, the electromagnetic interference to the wireless test shielding room can be eliminated to avoid affecting the communication function test.

[0020] The fusion test device of the utility model can realize the integrated test of flow and communication of NB-IoT smart gas meters. By setting the first filter waveguide interface 2 and the second filter waveguide interface 3, a flow test air pipe is introduced to perform flow test without affecting the shielding performance, thereby improving the test efficiency of a single smart gas meter 6.

[0021] In order to improve the applicability of the test device, the first filter waveguide interface 2 and the second filter waveguide interface 3 both adopt waveguide standard interfaces.

[0022] In this embodiment, the gaps between the outer walls of the first filter waveguide interface 2 and the second filter waveguide interface 3 and the interface panel 14 are filled with a conductive metal mesh to ensure good electrical contact between the shielding body and the interface, thereby ensuring overall shielding performance.

[0023] In order to improve the test efficiency and test multiple smart gas meters at the same time, an intermediate pipeline is also provided inside the shielding shell 1, and the intermediate pipeline is used to connect two or more smart gas meters in series. Figure 2 As shown, in this embodiment, the intermediate pipeline includes a first intermediate pipeline 10 and a second intermediate pipeline 12, the air inlet of the first smart gas meter 9 is connected to the second end of the gas input pipeline 4, the air outlet of the first smart gas meter 9 is connected to the first end of the first intermediate pipeline 10, the second end of the first intermediate pipeline 10 is connected to the air inlet of the second smart gas meter 11, the air outlet of the second smart gas meter 11 is connected to the first end of the second intermediate pipeline 12, the second end of the second intermediate pipeline 12 is connected to the air inlet of the third smart gas meter 13, and the air outlet of the third smart gas meter 13 is connected to the second end of the gas output pipeline 5.

[0024] When the utility model is in use, the smart gas meters are first placed in the shielding shell, and after connecting it with the communication test component, the gas input pipeline, the gas output pipeline and the intermediate pipeline are correctly connected to the air outlet and air inlet of the smart gas meter. After confirming that the connection is correct, the gas input pipeline and the gas output pipeline are connected to the external gas, and the flow and communication function test can be started.

[0025] The flow and communication fusion test device of the utility model can isolate and shield the electromagnetic wave interference of the outdoor environment, test the communication performance, and perform the flow test of the smart gas meter in the shielded room at the same time. It does not affect the overall shielding performance, and can meet the needs of batch testing of NB-IoI smart gas meters. The operation method is simple and the practicability is strong.

[0026] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

Claims

1. A flow and communication fusion test device suitable for NB-IoT smart gas meters, comprising a wireless test shielding room, the wireless test shielding room comprising a shielding shell, one side of the shielding shell is provided with an interface panel for introducing a test signal, characterized in that: It also includes one or more filter waveguide interface groups, each of which includes a first filter waveguide interface and a second filter waveguide interface, and the first filter waveguide interface and the second filter waveguide interface are inserted into a through hole provided on the interface panel; It also includes a gas input pipeline and a gas output pipeline, the first ends of the gas input pipeline and the gas output pipeline are both located outside the shielding shell, and are respectively used to connect to the input end and output end of the external gas, the gas input pipeline passes through the first filter waveguide interface, and the gas output pipeline passes through the second filter waveguide interface, the second ends of the gas input pipeline and the gas output pipeline are both located inside the shielding shell, and are respectively used to connect to the air inlet and air outlet of the smart gas meter, and the gas input pipeline and the gas output pipeline are both made of non-metallic materials.

2. The flow and communication fusion test device suitable for NB-IoT smart gas meter according to claim 1 is characterized in that: The first filter waveguide interface and the second filter waveguide interface both adopt waveguide standard interfaces.

3. The flow and communication fusion test device suitable for NB-IoT smart gas meter according to claim 1 is characterized in that: An intermediate pipeline is also provided inside the shielding shell, and the intermediate pipeline is used to connect two or more smart gas meters in series. The intermediate pipeline includes at least a first intermediate pipeline, and the first end of the first intermediate pipeline is used to connect the air outlet of the first smart gas meter, and the second end of the first intermediate pipeline is used to connect the air inlet of the second smart gas meter. The air inlet of the first smart gas meter is connected to the second end of the gas input pipeline, and the air outlet of the second smart gas meter is connected to the second end of the gas output pipeline.

4. The flow and communication fusion test device suitable for NB-IoT smart gas meter according to claim 1 is characterized in that: The gas input pipeline and the gas output pipeline are both made of rubber or PVC plastic.

5. The flow and communication fusion test device suitable for NB-IoT smart gas meter according to claim 1 is characterized in that: The gaps between the outer walls of the first filter waveguide interface and the second filter waveguide interface and the interface panel are filled with a conductive metal mesh.

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