Multi-channel online electronic nose online analyzer

Abstract

The utility model relates to a multi-channel on-line electronic nose on-line analyzer, a multi-channel gas automatic sampling device, a gas sensitive sensor constant temperature detection device and a control analysis device are integrated in the analyzer, and the multi-channel gas automatic sampling device is connected with the gas sensitive sensor constant temperature detection device through a gas pipeline; and the gas-sensitive sensor constant-temperature detection device is connected with the control analysis device through a cable. The analyzer is characterized in that a multi-channel gas automatic sampling device, a gas sensitive sensor constant temperature detection device and a control analysis processing device are integrated in one device; 2, automatic switching input of 10 paths of gases is realized through switching of a plurality of paths of electromagnetic valves, and at most 8 different gases can be detected; thirdly, the built-in throttle valve has a throttling effect on external input gas; 4, the analysis equipment and the detection gas are plug-and-play, and the operation is simple; and the detection and analysis process is automatic, networked and visualized.

Description

Technical Field

[0001] This utility model relates to a multi-channel online electronic nose, and more particularly to a multi-channel online electronic nose (8 channels) online analysis device. Background Technology

[0002] The online electronic nose (8-channel) has broad application prospects, but its current capabilities are still quite limited. Most of the related patents were applied for or granted in recent years, indicating that both domestic and international authorities have begun to pay attention to the protection of intellectual property rights in the field of online electronic nose (8-channel) technology.

[0003] The online electronic nose (8-channel) analysis method utilizes an array of multiple gas sensors with overlapping performance to rapidly perform qualitative and quantitative odor analysis, such as determining the type of odor substances, quality grade, and freshness.

[0004] Applications include: determining fruit ripeness, determining the freshness of meat products, monitoring ambient air, and analyzing the aroma of spices, flavorings, alcoholic substances, and blood odors, among others.

[0005] Therefore, it is necessary to develop a multi-channel gas path automatic switching and integration device that uses the Internet to remotely transmit data, making it easy to find the optimal sampling time interval for multiple channels and realize dynamic local magnification display of data, including visualization of the response of a single gas sensor, visualization of the overall response of the gas sensor array, and visualization of substance concentration. Summary of the Invention

[0006] This utility model aims to provide a multi-channel online electronic nose analyzer, mainly addressing the selection, replacement, and online calibration of gas-sensitive sensors in the online analysis of the multi-channel online electronic nose (8 channels), precision sampling and integration, integration, miniaturization and automation of the online analysis of the multi-channel online electronic nose (8 channels), and remote visualization.

[0007] To achieve the above objectives, the technical solution of this utility model is: a multi-channel online electronic nose analyzer, which integrates a multi-channel automatic gas injection device, a gas-sensitive sensor constant temperature detection device, and a control and analysis device. The multi-channel automatic gas injection device is connected to the gas-sensitive sensor constant temperature detection device through a gas pipeline; the gas-sensitive sensor constant temperature detection device is connected to the control and analysis device through a cable.

[0008] Furthermore, the analyzer has a flow meter on the lower right side of the front for displaying real-time intake air flow; a power button and a main unit start button on the right side; an external gas input interface and an internal exhaust gas discharge interface on the lower left side of the rear; an external interface for the main unit on the upper right side of the rear; and a power socket on the lower right side of the rear.

[0009] Furthermore, the multi-channel automatic gas sampler is installed on the lower right side of the analyzer, the gas-sensitive sensor constant temperature detection device is installed on the upper right side of the analyzer, and the control and analysis device is installed on the left side of the analyzer.

[0010] Furthermore, the multi-channel automatic gas sampling device includes an outer frame, a miniature vacuum pump, a control board, and multiple solenoid valves. The miniature vacuum pump, control board, and multiple solenoid valves are installed inside the outer frame. Multiple compression fittings and pagoda fittings are installed at the front of the outer frame. The multiple compression fittings and pagoda fittings are connected to the miniature vacuum pump through multiple solenoid valves. The miniature vacuum pump is connected to the gas-sensitive sensor constant temperature detection device through a gas pipeline.

[0011] Furthermore, the multi-channel automatic gas sampler has a built-in throttling valve for throttling the externally input gas.

[0012] Furthermore, the gas-sensitive sensor constant temperature detection device includes multiple gas-sensitive sensors, sensor bases, temperature sensors, partitions, cooling fans, and fan mounting plates. A cooling fan is mounted in the center of the sensor base via the fan mounting plate, and multiple gas-sensitive sensors and temperature sensors are distributed and installed around the perimeter.

[0013] Furthermore, the control and analysis processing device includes a multi-channel data acquisition card, terminal blocks, a DC step-down module, a cooling fan, a current-regulated power supply, an industrial control motherboard, an isolated USB converter module, and a computer motherboard. The multi-channel data acquisition card connects to multiple gas sensors and is connected to the industrial control motherboard and the computer motherboard. Test data is transmitted to the Internet via a network card to achieve remote transmission, remote visualization, and remote monitoring, and is also transmitted to a display for displaying the online gas sensor response curve and the temperature change of the constant temperature chamber of the gas sensor array.

[0014] The beneficial effects of this utility model are:

[0015] This utility model employs a multi-channel automatic gas component input online analysis device. One key feature is the integration of a multi-channel automatic gas sampling device, a gas-sensitive temperature detection device, and a control and analysis processing device into a single unit. A second feature is the ability to automatically switch between up to 10 gas inputs via multi-channel solenoid valves, enabling the detection of up to 8 different gases. A third feature is the built-in throttling valve, which restricts the flow of externally input gases. A fourth feature is the plug-and-play functionality between the analysis device and the detected gases, simplifying operation. The detection and analysis process is automated, networked, and visualized. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall appearance of the online electronic nose (8-channel) online analyzer provided in this embodiment of the utility model;

[0017] Wherein: (a) is the front-side stereoscopic view, and (b) is the rear-side stereoscopic view;

[0018] Figure 2 This is a schematic diagram of the internal main unit module layout of the online electronic nose (8-channel) online analyzer provided in this embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the multi-channel automatic gas sampling device provided in an embodiment of the present invention;

[0020] Wherein: (a) is the front-side stereoscopic view, and (b) is the rear-side stereoscopic view;

[0021] Figure 4 This is a schematic diagram of the gas-sensitive sensor constant temperature detection device provided in this embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the control, analysis and processing device provided in an embodiment of the present invention. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0024] This utility model provides a multi-channel online electronic nose (8-channel) online analysis device, which mainly solves the problems of gas sensor selection, replacement and online calibration, precision sampling and integration, integration, miniaturization and automation of multi-channel online electronic nose (8-channel) online analysis, and remote visualization.

[0025] The multi-channel online electronic nose (8-channel) online analysis device integrates a multi-channel automatic gas sampler 202, a gas-sensitive sensor constant temperature detection device 201, and a control and analysis device 203.

[0026] From the outside, the flow meter 101 is located on the lower right side of the front of the device, used to display the real-time air intake flow rate; the power button 102 and the main unit start button 103 are located on the right side of the device; the external gas input interface and the internal exhaust gas output interface 104 are located on the lower left side of the rear of the device; the external interface 105 is located on the upper right side of the rear of the device; and the power socket 106 is located on the lower right side of the rear of the device. Figure 1 As shown in (a) and (b).

[0027] like Figure 2As shown, the device integrates a multi-channel automatic gas sampling device 202, a gas-sensitive sensor constant temperature detection device 201, and a control and analysis device 203. From the front, the multi-channel automatic gas sampling device 202 is installed on the lower right side of the device, the gas-sensitive sensor constant temperature detection device 201 is installed on the upper right side of the device, and the control and analysis device 203 is installed on the left side of the device. The multi-channel automatic gas sampling device 202 is connected to the gas-sensitive sensor constant temperature detection device 201 through a gas pipeline. The gas-sensitive sensor constant temperature detection device 201 is connected to the control and analysis device 203 through a cable.

[0028] like Figure 3 As shown in (a) and (b), the multi-channel automatic gas sampling device 202 includes: a compression fitting 301, a pagoda fitting 302, an outer frame 303, a YC8-4P aviation connector 304, a miniature vacuum pump 305, an aluminum busbar 306, a control board 307, 14 solenoid valves 308, and related pipes and connectors. The miniature vacuum pump 305, control board 307, and 14 solenoid valves 308 are housed inside the outer frame 303. Multiple compression fittings 301 and pagoda fittings 302 are mounted on the front of the outer frame 303. These fittings are connected to the miniature vacuum pump 305 via the 14 solenoid valves 308. The miniature vacuum pump 305 is connected to a gas-sensitive sensor constant temperature detection device 201 via gas pipes. A built-in throttling valve is also included to throttle the externally input gas.

[0029] like Figure 4 As shown, the gas-sensitive sensor constant temperature detection device 201 includes a detection array composed of 16 gas-sensitive sensors. These include: two 816-A00 gas sensors 401, two 832-A00 gas sensors 402, two 822-A00 gas sensors 403, one 813-A00 gas sensor 404, one TGS2611-C00 gas sensor 405, two TGS2603 gas sensors 406, a sensor base 407, a support column 408, three 816-A00 gas sensors 409, a temperature sensor 410, a partition 411, a cooling fan 412, a fan mounting plate 413, one TGS2600 gas sensor 414, and two TGS2602 gas sensors 415, among other components. A cooling fan 412 is mounted in the middle of the sensor base 407 via a fan mounting plate 413, and 16 gas sensors and temperature sensors 410 are distributed around the perimeter. A partition 411 is provided on the sensor base 407 between the 816-A00 gas sensor 409 and the TGS2600 gas sensor 414.

[0030] like Figure 5As shown, the control analysis and processing device 203 includes a 16-channel data acquisition card 501, terminal blocks 502, a DC-DC step-down module 503, a cooling fan 504, a current-regulated power supply 505, an industrial control motherboard 506, an isolated USB-to-485 module 507, and a computer motherboard 508. The 16-channel data acquisition card 501 connects to 16 gas sensors and is connected to the industrial control motherboard 506 and the computer motherboard 508.

[0031] Test data is transmitted to the Internet via a network card, enabling remote transmission, remote visualization, and remote monitoring. The gas-sensitive sensor response curve and the temperature change of the constant temperature chamber of the gas-sensitive sensor array are then displayed online on a monitor.

[0032] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A multi-channel online electronic nose analyzer, characterized in that: The analyzer integrates a multi-channel automatic gas injection device, a gas-sensitive sensor temperature detection device, and a control and analysis device. The multi-channel automatic gas injection device is connected to the gas-sensitive sensor temperature detection device through a gas pipeline; the gas-sensitive sensor temperature detection device is connected to the control and analysis device through a cable.

2. The multi-channel online electronic nose analyzer according to claim 1, characterized in that: The analyzer has a flow meter on the lower right side of the front for displaying real-time intake air flow; a power button and a main unit start button on the right side; an external gas input interface and an internal exhaust gas discharge interface on the lower left side of the rear; an external interface for the main unit on the upper right side of the rear; and a power socket on the lower right side of the rear.

3. The multi-channel online electronic nose analyzer according to claim 1, characterized in that: The multi-channel automatic gas sampler is installed on the lower right side of the analyzer, the gas-sensitive sensor constant temperature detection device is installed on the upper right side of the analyzer, and the control and analysis device is installed on the left side of the analyzer.

4. The multi-channel online electronic nose analyzer according to claim 1, characterized in that: The multi-channel automatic gas sampling device includes an outer frame, a miniature vacuum pump, a control board, and multiple solenoid valves. The miniature vacuum pump, control board, and multiple solenoid valves are installed inside the outer frame. Multiple compression fittings and pagoda fittings are installed at the front of the outer frame. The multiple compression fittings and pagoda fittings are connected to the miniature vacuum pump through multiple solenoid valves. The miniature vacuum pump is connected to a gas-sensitive sensor constant temperature detection device through a gas pipeline.

5. The multi-channel online electronic nose analyzer according to claim 4, characterized in that: The multi-channel automatic gas sampler has a built-in throttling valve for throttling the externally input gas.

6. The multi-channel online electronic nose analyzer according to claim 1, characterized in that: The gas-sensitive sensor constant temperature detection device includes multiple gas sensors, sensor bases, temperature sensors, partitions, cooling fans, and fan mounting plates. A cooling fan is mounted in the center of the sensor base via the fan mounting plate, and multiple gas sensors and temperature sensors are distributed and installed around the perimeter.

7. The multi-channel online electronic nose analyzer according to claim 1, characterized in that: The control, analysis, and processing device includes a multi-channel data acquisition card, terminal blocks, a DC step-down module, a cooling fan, a current-regulated power supply, an industrial control motherboard, an isolated USB converter module, and a computer motherboard. The multi-channel data acquisition card connects to multiple gas sensors and is connected to the industrial control motherboard and the computer motherboard. Test data is transmitted to the Internet via a network card to achieve remote transmission, remote visualization, and remote monitoring, and is also transmitted to a display for showing the online display of gas sensor response curves and temperature changes in the constant temperature chamber of the gas sensor array.

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