Gas sensor calibration console

Abstract

The utility model discloses a calibration console for a gas sensor, which comprises a main control board arranged in the console, an environmental gas monitoring sensor electrically connected with the main control board, and an audible and visual alarm fixedly arranged on a workbench, a gas connector and a gas outlet are formed in the control table, a control valve, a flow controller and a flow meter are sequentially arranged between the gas connector and the gas outlet, and the flow controller is electrically connected with the main control board. When the gas sensor is calibrated, gas can be detected through the environment gas monitoring sensor, if gas leakage does not exist, the gas can be connected into a console through the gas interface, and then the control valve, the flow controller and the flow meter are adopted to control the gas flow. And the gas outlet is connected to a gas sensor for calibration. In the calibration process, both the environmental gas monitoring sensor and the audible and visual alarm can realize detection and early warning of gas leakage, so that the safety of operators during calibration test of the gas sensor is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sensor calibration, in particular to a gas sensor calibration console. Background Art

[0002] A gas sensor is a transducer that converts the volume fraction of a gas into a corresponding electrical signal. The detector head conditions the gas sample through the gas sensor, typically filtering out impurities and interfering gases, and drying or refrigerating the instrument display. Gas sensors are widely used in various fields, including industrial, civil, and environmental monitoring, playing a vital role in protecting the environment, ensuring safety, and improving quality of life.

[0003] Traditionally, the testing, aging, calibration, and inspection of gas sensors require constant switching of standard gases of varying concentrations, while also adjusting the gas sample flow rate according to design requirements. With a wide variety of gas sensors in production, manually switching and adjusting the different types and concentrations of standard gases becomes inefficient and cumbersome. Furthermore, some flammable, explosive, and toxic gases pose a safety and health risk to operators. A gas leak can directly harm operators.

[0004] Therefore, how to protect operators and reduce the risk of gas leakage during gas sensor calibration testing is a technical problem that needs to be urgently solved in this field. Utility Model Content

[0005] In order to solve the above technical problems, the present invention proposes the following technical solutions:

[0006] In the first aspect, an embodiment of the utility model provides a gas sensor calibration console, comprising: a main control board arranged in the console, an environmental gas monitoring sensor and an audible and visual alarm electrically connected to the main control board, the environmental gas monitoring sensor and the audible and visual alarm, the environmental gas monitoring sensor is arranged in the working area of ​​the console, and the audible and visual alarm is fixedly arranged on the workbench; a gas interface and a gas outlet are provided on the console, and a control valve, a flow controller and a flow meter are sequentially arranged between the gas interface and the gas outlet, and the flow controller is electrically connected to the main control board.

[0007] In one possible implementation, multiple groups of gas interfaces and gas outlets are provided, with the multiple groups of gas interfaces being provided on a first side of the console, and the gas outlets being provided on a second side of the console. The gas interfaces and gas outlets are interconnected via a gas pipe, and the control valve, flow controller, and flow meter are all connected and disposed on the gas pipe. The provision of multiple groups of gas interfaces and gas outlets allows for switching and adjusting the standard gas samples required for gas sensor testing, aging, calibration, and inspection, meeting the gas supply requirements for the simultaneous production of standard gases for multiple different types of gas sensors, thereby improving the efficiency of gas sensor production.

[0008] In one possible implementation, a pressure gauge is provided between the control valve and the flow controller, and is connected to the gas pipe. The pressure gauge can monitor the gas pressure in real time to ensure sufficient gas during calibration testing, preventing insufficient gas from affecting the calibration test.

[0009] In one possible implementation, an exhaust vent is provided on the top of the console, and a ventilation grille is provided on one side of the console corresponding to the exhaust vent. If gas leaks from the console during calibration, it will remain in the console if not exhausted. The exhaust vent and the ventilation grille create convection, and air is blown toward the ventilation grille through the ventilation device, forcing the gas in the console out through the exhaust vent.

[0010] In one possible implementation, the control terminal of the control valve and the display terminal of the flow meter are disposed on the table of the control console. During calibration testing, the operator can select the test gas through the control terminal, and the display terminal of the flow meter can conveniently check whether the test gas flow meets the requirements.

[0011] In one possible implementation, a touch screen is provided on the console surface and is electrically connected to the main control board. The touch screen can be used to select settings for gas flow and concentration during gas calibration, and the flow controller controls the passing gas based on the set gas flow and concentration.

[0012] In a possible implementation, a first connection terminal and a second connection terminal are provided in the console, the first connection terminal is electrically connected to the main control board and the socket respectively, and the second connection terminal is electrically connected to the main control board and the sound and light alarm respectively.

[0013] In an embodiment of the present invention, when calibrating a gas sensor, the ambient gas monitoring sensor can detect gas. If there is no gas leak, gas can be connected to the control console through the gas interface. The gas flow is then controlled using a control valve, flow controller, and flow meter. The gas outlet is then connected to the gas sensor for calibration. During the calibration process, both the ambient gas monitoring sensor and the audible and visual alarm can detect and warn of gas leaks, thereby ensuring the safety of the operator during gas sensor calibration testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a gas sensor calibration console provided by an embodiment of the present utility model;

[0015] Figure 2 A schematic diagram of the internal structure of a gas sensor calibration console provided by an embodiment of the present utility model;

[0016] Figure 3 A schematic diagram of the principle of a gas sensor calibration console provided by an embodiment of the present utility model;

[0017] Figure 4 A flow chart of a gas sensor calibration control method provided by an embodiment of the present utility model;

[0018] Figure 1-4 In the symbol, it is represented as:

[0019] 1- console, 2- main control board, 3- sound and light alarm, 4- gas interface, 5- gas outlet, 6- control valve, 7- flow controller, 8- flow meter, 9- air pipe, 10- pressure gauge, 11- exhaust vent, 12- ventilation grille, 13- touch screen, 14- first terminal, 15- second terminal, 16- socket, 17- gas sample automatic switching device, 18- host computer. DETAILED DESCRIPTION

[0020] The present invention will be described below with reference to the accompanying drawings and specific implementation methods.

[0021] See also Figure 1 and Figure 3The gas sensor calibration console 1 provided in this embodiment includes: a main control board 2 arranged in the console 1, an environmental gas monitoring sensor (not shown in the figure) and an audible and visual alarm 3 electrically connected to the main control board 2, the environmental gas monitoring sensor and the audible and visual alarm 3, the environmental gas monitoring sensor is arranged in the working area of ​​the console 1, and the audible and visual alarm 3 is fixedly arranged on the workbench; a gas interface 4 and a gas outlet 5 are provided on the console 1, and a control valve 6, a flow controller 7 and a flow meter 8 are arranged in sequence between the gas interface 4 and the gas outlet 5, and the flow controller 7 is electrically connected to the main control board 2.

[0022] like Figure 1 and Figure 2 As shown, multiple groups of gas interfaces 4 and gas outlets 5 are provided. Multiple groups of gas interfaces 4 are provided on the first side of the console 1, and the gas outlets 5 are provided on the second side of the console 1. The gas interfaces 4 and gas outlets 5 are connected by a gas pipe 9. The control valve 6, flow controller 7, and flow meter 8 are all connected and provided on the gas pipe 9. The provision of multiple groups of gas interfaces 4 and gas outlets 5 allows switching and adjustment of standard gas samples required for gas sensor testing, aging, calibration, and inspection, meeting the gas supply requirements for the simultaneous production of standard gases for multiple different types of gas sensors, thereby improving the efficiency of gas sensor production.

[0023] like Figure 3 As shown, a pressure gauge 10 is further provided between the control valve 6 and the flow controller 7, and the pressure gauge 10 is connected to the gas pipe 9. The pressure gauge 10 can monitor the gas pressure in real time to ensure that there is sufficient gas during the calibration test, thereby preventing the calibration test from being affected by insufficient gas source.

[0024] In this embodiment, an exhaust port 11 is provided on the top of the console 1, and a ventilation grille 12 is provided on one side of the console 1 corresponding to the exhaust port 11. If gas leaks from the console 1 during calibration, it will remain in the console 1 if it is not exhausted. The exhaust port 11 and ventilation grille 12 are used to create convection, and the exhaust port 11 is connected to outdoor ventilation equipment to exhaust the gas in the console 1 through the exhaust port 11.

[0025] like Figure 1As shown, the control terminal of the control valve 6 and the display terminal of the flow meter 8 are disposed on the surface of the console 1. During calibration testing, the operator can select the test gas through the control terminal, and the display terminal of the flow meter 8 can be used to conveniently check whether the test gas flow meets the requirements. A touch screen 13 is also disposed on the surface of the console 1, and is electrically connected to the main control board 2. The touch screen 13 is used to select the gas flow rate and concentration settings during gas calibration. The flow controller 7 controls the passing gas according to the set gas flow rate and concentration.

[0026] In this embodiment, a first wiring terminal 14 and a second wiring terminal 15 are provided in the console 1. The first node terminal is electrically connected to the main control board 2 and the socket 16 respectively, and the second wiring terminal 15 is electrically connected to the main control board 2 and the sound and light alarm 3, the gas sample automatic switching device 17 and the host computer 18 respectively.

[0027] When the gas sensor calibration console 1 in this embodiment is used to perform a gas sensor calibration test, the specific control method is as follows:

[0028] S101, the console 1 is powered on and after initialization is completed, the data of the ambient gas detection sensor is read to determine whether there is a gas leak in the surrounding environment.

[0029] S102, if there is gas leakage, an alarm is issued through the sound and light alarm 3, and the operation is stopped immediately. If there is no gas leakage, the console 1 enters a normal working state.

[0030] S103, select the type, concentration and gas flow of the gas sample through the touch screen or the upper controller.

[0031] S104, the control console sends a control instruction to the gas sample automatic switching device, and the gas sample automatic switching device realizes the switching of different types and concentrations of standard gases.

[0032] S105, the control console controls the flow controller to adjust the gas sample flow rate to meet the gas supply requirements of different types of gas sensor standard gases.

[0033] In the embodiment of the present invention, "at least one" refers to one or more, and "more" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0034] The above description is merely a specific embodiment of the present invention. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed in the present invention are intended to be covered by the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A gas sensor calibration console, characterized in that: include: A main control board is arranged in the console, and an environmental gas monitoring sensor and an audible and visual alarm are electrically connected to the main control board. The environmental gas monitoring sensor and the audible and visual alarm are arranged in the working area of ​​the console, and the audible and visual alarm is fixedly arranged on the console; a gas interface and a gas outlet are provided on the console, and a control valve, a flow controller and a flow meter are arranged in sequence between the gas interface and the gas outlet, and the flow controller is electrically connected to the main control board.

2. The gas sensor calibration console according to claim 1, characterized in that: There are multiple groups of gas interfaces and gas outlets, multiple groups of gas interfaces are arranged on the first side of the console, and the gas outlets are arranged on the second side of the console. The gas interfaces and the gas outlets are connected through an air pipe, and the control valve, flow controller and flow meter are all connected and arranged on the air pipe.

3. The gas sensor calibration console according to claim 2, characterized in that: A pressure gauge is further provided between the control valve and the flow controller, and the pressure gauge is connected to the air pipe.

4. The gas sensor calibration console according to claim 1, characterized in that: An air outlet is provided on the top of the console, and a ventilation grille is provided on one side of the console corresponding to the air outlet.

5. The gas sensor calibration console according to claim 1, characterized in that: The control end of the control valve and the display end of the flow meter are arranged on the table of the console.

6. The gas sensor calibration console according to claim 5, characterized in that: A touch screen is also provided on the table top of the console, and the touch screen is electrically connected to the main control board.

7. The gas sensor calibration console according to claim 1, characterized in that: The console is provided with a first wiring terminal and a second wiring terminal. The first wiring terminal is electrically connected to the main control board and the socket respectively, and the second wiring terminal is electrically connected to the main control board and the sound and light alarm respectively.

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