A device for detecting alcohol content using infrared rays

Abstract

This invention relates to a device for detecting alcohol content using infrared light. It includes a housing, characterized in that the housing contains a preheating tube, an infrared light source assembly, a flow sensor, an infrared detector, a U-shaped gas chamber, and a sampling pump. A blowing pipe is located at the bottom of the housing and is connected to the preheating tube. The flow sensor and infrared light source assembly are also located between the preheating tube and the U-shaped gas chamber. One end of the U-shaped gas chamber is connected to the preheating tube to ensure a constant temperature within the device. The U-shaped gas chamber is connected to the sampling pump via the infrared detector, which draws the gas to be measured into the U-shaped gas chamber. This invention, by incorporating the U-shaped gas chamber and preheating tube, employs preheating technology to maintain a constant temperature environment, adapting to testing under different conditions. Furthermore, the infrared light source assembly emits infrared light into the U-shaped gas chamber. Due to the U-shaped structure of the gas chamber, the optical path of the infrared light is increased by utilizing the principle of reflection, thereby improving the sensitivity of the infrared measurement.

Description

Technical Field

[0001] This utility model specifically relates to a device for detecting alcohol content using infrared light, belonging to the technical field of alcohol detectors. Background Technology

[0002] Infrared gas alcohol content detection devices are advanced instruments used for the rapid measurement of gas component concentrations. They are commonly used in the medical, industrial, environmental monitoring, chemical analysis, and safety applications. In particular, in the medical industry, infrared analysis technology is often used to measure and analyze the concentration of gas components to monitor patients' physiological conditions, the concentration of gaseous anesthetic drugs, and the concentration of oxygen and carbon dioxide in respiratory gases.

[0003] Currently, this novel infrared gas composition concentration analyzer has the following drawbacks on the market: Most designs involve using a gas pump to draw a suitable amount of gas into the reaction chamber for analysis. After the analysis is complete, air is drawn out from the same inlet (using a non-analytical gas as a reference). This process may result in residual gas or the presence of the analytical gas molecules in the environment, causing a false zeroing phenomenon. This can easily lead to insufficient measurement accuracy in subsequent measurements. Secondly, the inconsistent temperatures resulted in inaccurate measurements.

[0004] Therefore, in order to address the shortcomings of existing technologies, a device for detecting alcohol content using infrared light is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a device for detecting alcohol content using infrared light in order to solve the problems mentioned in the background art.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a device for detecting alcohol content using infrared light, comprising a housing, characterized in that the housing is internally provided with a preheating tube, an infrared light source assembly, a flow sensor, an infrared detector, a U-shaped gas chamber, and a gas sampling pump; a blowing tube is provided at the bottom of the housing, the blowing tube being connected to the preheating tube; the flow sensor and the infrared light source assembly are further provided between the preheating tube and the U-shaped gas chamber; one end of the U-shaped gas chamber is connected to the preheating tube to ensure a constant temperature is reached inside the device; the U-shaped gas chamber is connected to the gas sampling pump via the infrared detector, and the gas sampling pump draws the measuring gas into the U-shaped gas chamber.

[0007] Furthermore, it also includes a zero-return reference sampling component, which is disposed at one end of the preheating tube and is used to detect whether there is gas to be measured in the tube and to monitor whether the tube has reached a zero-return state.

[0008] Furthermore, it also includes a temperature control component, with multiple sets of the temperature control component respectively disposed at one end of the preheating pipe and the U-shaped air chamber.

[0009] Furthermore, the constant temperature component includes a temperature monitoring sensor and a temperature control component.

[0010] Furthermore, the infrared light source assembly increases the infrared light path by emitting infrared light onto the U-shaped gas chamber.

[0011] Furthermore, the outer casing is also provided with a first air outlet and a second air outlet.

[0012] Furthermore, the housing also includes an output module for outputting data.

[0013] Furthermore, the outer casing is also equipped with buttons and external interfaces.

[0014] Furthermore, a display screen is also installed on the outer casing.

[0015] The beneficial effects of this utility model are: This invention uses a U-shaped gas chamber and a preheating tube to ensure a constant temperature environment by employing preheating technology, thus adapting to testing under different conditions. Furthermore, the infrared light source component emits infrared light into the U-shaped gas chamber. Since the U-shaped gas chamber has a U-shaped structure, the optical path of the infrared light is increased by utilizing the principle of reflection, thereby improving the sensitivity of infrared measurement. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a first side view of the present invention; Figure 4 This is a second side view of the present invention; Figure 5 This is a rear view of the present invention; Figure 6 This is a bottom view of the present invention; In the diagram: 1. Air inlet; 2. Preheating pipe; 3. First air outlet; 4. Zeroing reference sampling component; 5. Flow sensor; 6. Infrared light source component; 7. U-shaped air chamber; 8. Infrared detector; 9. Air pump for sampling; 10. Second air outlet; 12. Display screen; 13. Air blowing pipe; 14. Button; 15. Output module; 16. External interface; 17. Main PCB board; 18. Temperature control component; 19. Secondary PCB board; 20. Housing. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-6 As shown, Figures 1-6 The illustration schematically shows a device for detecting alcohol content using infrared light according to the present invention.

[0019] An infrared detection device for alcohol content includes a housing 20. The housing 20 contains a preheating tube 2, an infrared light source assembly 6, a flow sensor 5, an infrared detector 8, a U-chamber 7, and a sampling pump 9. A blowing tube 13 is located at the bottom of the housing 20 and is connected to the preheating tube 2. The flow sensor 5 and the infrared light source assembly 6 are also located between the preheating tube 2 and the U-chamber 7. One end of the U-chamber 7 is connected to the preheating tube 2 to ensure a constant temperature within the device. The U-chamber 7 is connected to the sampling pump 9 via the infrared detector 8, and the sampling pump 9 draws the gas to be measured into the U-chamber 7.

[0020] Among them, the infrared light source component 6 emits infrared light and uses the U-shaped pipe of the U-shaped gas chamber 7 to increase the optical path of the infrared light, thereby improving the infrared measurement sensitivity.

[0021] Furthermore, it also includes a zero-reference sampling component 4, which is set at one end of the preheating pipe 2 and is used to detect whether there is gas to be measured in the pipe and to monitor whether the pipe has reached the zero state.

[0022] Furthermore, it also includes a constant temperature component 18, with multiple sets of constant temperature components 18 respectively disposed at one end of the preheating pipe 2 and the U-shaped air chamber 7.

[0023] Furthermore, the thermostatic component 18 includes a temperature monitoring sensor and a temperature control component.

[0024] Before sampling and testing, the preheating tube 2 and the U-shaped air chamber 7 are heated by the constant temperature component 18 to reach the preset temperature and maintain a constant temperature environment.

[0025] The constant temperature component 18 mainly uses the temperature monitoring sensor on the preheating tube 2 or the U-shaped gas chamber 7 to provide real-time feedback on the gas temperature inside the tube. If the temperature is lower than the preset temperature value, it automatically replenishes heat to ensure that the ambient temperature in the preheating tube 2 and the U-shaped gas chamber 7 remains constant at the set temperature. At the same time, if the temperature in the preheating tube 2 or the U-shaped gas chamber 7 is detected to be higher than the preset temperature, the temperature control component is activated to reduce the temperature to the set temperature range in order to achieve precise control.

[0026] The preset temperature is controlled at around 35-40 degrees Celsius.

[0027] Furthermore, the infrared light source assembly 6 increases the infrared light path by emitting infrared light onto the U-shaped gas chamber 7.

[0028] Furthermore, a main PCB board 17 and a secondary PCB board 19 are also provided inside the outer casing 20.

[0029] The main PCB board 17 and the secondary PCB board 19 are electrically connected to other components and are used to control the overall operation of the device.

[0030] Further, refer to Figure 2 The U-shaped air chamber is oriented, and the outer shell 20 is also provided with a first air outlet 3 and a second air outlet 10.

[0031] Furthermore, the housing 20 also has an output module 15 inside for outputting data.

[0032] Furthermore, the outer casing 20 is also equipped with buttons 14 and external interfaces 16.

[0033] Furthermore, a display screen 12 is also installed on the outer casing 20.

[0034] The beneficial effects of this utility model are: This invention uses a U-shaped gas chamber and a preheating tube to ensure a constant temperature environment by employing preheating technology, thus adapting to testing under different conditions. Furthermore, the infrared light source component emits infrared light into the U-shaped gas chamber. Since the U-shaped gas chamber has a U-shaped structure, the optical path of the infrared light is increased by utilizing the principle of reflection, thereby improving the sensitivity of infrared measurement.

[0035] The working principle of this utility model: After the preheating tube and U-chamber reach the preset temperature, the user blows air into the blowing tube. The sampling air pump first draws an appropriate amount of the gas to be tested into the U-chamber. The gas to be tested enters from the blowing tube, and the excess gas is discharged from the first and second air outlets. Once the flow sensor detects an appropriate amount of gas, the gas pump stops working, and the infrared LED illuminates the gas in the U-chamber. Since the concentrations of different gases being measured have different infrared absorption strengths, different currents are generated at the infrared detector. The current signal is processed by the main PCBA board and the secondary PCBA board (main board signal processing and control unit) to measure the concentration value of the measured gas. After the analysis is completed, reliable results are output to the display screen and external interface. Since the gas components being measured still exist in the U-cell, it is necessary to completely remove the gas components from the pipe or the cell to ensure that the next measurement is not affected by the residual gas. The gas in the pipeline or gas chamber is discharged from the second outlet by the gas sampling pump. The zeroing reference sampling component monitors whether there is gas to be measured in the pipeline. It is used to monitor whether the internal environment of the reaction gas has reached absolute zero, thereby ensuring that the gas in the reaction chamber is zero. After the zeroing is completed, the zeroing reference sampling component stops working.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting alcohol content using infrared light, comprising a housing, characterized in that, The housing contains a preheating tube, an infrared light source assembly, a flow sensor, an infrared detector, a U-shaped gas chamber, and a gas sampling pump. A blowing pipe is located at the bottom of the housing and is connected to the preheating tube. The flow sensor and the infrared light source assembly are also located between the preheating tube and the U-shaped gas chamber. One end of the U-shaped gas chamber is connected to the preheating tube to ensure a constant temperature within the device. The U-shaped gas chamber is connected to the gas sampling pump via the infrared detector, and the gas sampling pump draws the gas to be measured into the U-shaped gas chamber.

2. The device for detecting alcohol content using infrared light as described in claim 1, characterized in that, It also includes a zero-return reference sampling component, which is set at one end of the preheating tube and is used to detect whether there is gas to be tested in the pipe and to monitor whether the pipe has reached the zero-return state.

3. The device for detecting alcohol content using infrared light as described in claim 2, characterized in that, It also includes a temperature control component, with multiple sets of the temperature control component respectively disposed at one end of the preheating pipe and the U-shaped air chamber.

4. The device for detecting alcohol content using infrared light as described in claim 3, characterized in that, The constant temperature component includes a temperature monitoring sensor and a temperature control component.

5. The device for detecting alcohol content using infrared light as described in claim 4, characterized in that, The infrared light source component increases the infrared light path by emitting infrared light onto the U-shaped gas chamber.

6. The device for detecting alcohol content using infrared light as described in claim 5, characterized in that, The outer casing is also provided with a first air outlet and a second air outlet.

7. The device for detecting alcohol content using infrared light as described in claim 6, characterized in that, The casing also contains an output module for outputting data.

8. The device for detecting alcohol content using infrared light as described in claim 7, characterized in that, The outer casing also has buttons and external interfaces.

9. The device for detecting alcohol content using infrared light as described in claim 8, characterized in that, A display screen is also installed on the outer casing.

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