High-precision alcohol detector

Abstract

The invention belongs to the technical field of alcohol content meters, and particularly relates to a high-precision alcohol content meter which comprises a meter main body, and an air blowing pipe is arranged in the meter main body; the fuel cell sensor and the infrared absorption sensor are arranged on the left side and the right side of the air blowing pipe respectively, and sensing ends of the fuel cell sensor and the infrared absorption sensor penetrate through the left side wall and the right side wall of the air blowing pipe and extend into an inner cavity of the air blowing pipe; the data processing module is arranged on the rear sides of the fuel cell sensor and the infrared absorption sensor, the data processing module is in data connection with the fuel cell sensor and the infrared absorption sensor, and a temperature compensation module is integrated on the data processing module; a neural network model is trained by introducing a machine learning method, data of temperature, humidity, pressure and the like in the alcohol detector are integrated, then data collected by a fuel cell sensor and an infrared absorption sensor are predicted and corrected, and the detection accuracy is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of alcohol detectors, in particular to a high-precision alcohol detector. Background Art

[0002] As society's emphasis on traffic safety and public health continues to grow, alcohol testing technology has gained widespread application in areas such as traffic law enforcement, corporate safety management, and personal health monitoring. Drunk driving is a major contributing factor to traffic accidents, making high-precision, fast-response alcohol testing equipment a key tool for ensuring road safety.

[0003] Traditional alcohol detectors usually use a single sensor for measurement, which makes it difficult to balance accuracy and stability. In actual use, due to environmental changes such as temperature, humidity, sensor aging, and user operation differences, large measurement errors often occur, affecting the accuracy of judgment.

[0004] Therefore, a high-precision alcohol detector is urgently needed. Summary of the Invention

[0005] (1) Technical problems solved In view of the deficiencies in the prior art, the present invention provides a high-precision alcohol detector to solve the problems raised in the background technology.

[0006] (2) Technical solution To achieve the above object, the present invention provides the following technical solution: a high-precision alcohol detector, comprising: An instrument body, wherein an air blowing pipe is provided inside the instrument body, the air blowing pipe is connected to the front end and the rear end of the instrument body, and the front end of the air blowing pipe protrudes from the side wall of the instrument body; A fuel cell sensor and an infrared absorption sensor are respectively arranged on the left and right sides of the air blow pipe, and the sensing ends of the fuel cell sensor and the infrared absorption sensor penetrate the left and right walls of the air blow pipe and extend into the inner cavity of the air blow pipe to collect data on the inhaled gas; A data processing module is provided on the rear side of the fuel cell sensor and the infrared absorption sensor, and the data processing module is connected to the fuel cell sensor and the infrared absorption sensor via data. The data processing module is integrated with a temperature compensation module for receiving and pre-processing data collected by the fuel cell sensor and the infrared absorption sensor; A main control module is provided at the rear side of the data processing module. The main control module is connected to the data processing module via data and is used to receive processed data and transmit the data to the alarm module. The push switch and alarm switch are installed on the left and right walls of the instrument body respectively, and the push switch and alarm switch are in contact with the left and right contacts of the data processing module respectively. Pressing the push switch once starts the alcohol detector, and pressing the push switch for 5 seconds turns the alcohol detector off; The alarm module is arranged above the data processing module and is used to issue an early warning signal and issue a warning when the detected alcohol concentration exceeds a preset threshold.

[0007] Preferably, the fuel cell sensor measures alcohol concentration by generating current through an oxidation reaction of ethanol under the action of a catalyst; Infrared absorption sensors are based on the principle that different gases specifically absorb infrared light of certain wavelengths. Ethanol molecules have special absorption peaks for certain wavelengths of infrared light. By measuring the intensity of these absorption peaks, the concentration of ethanol can be calculated.

[0008] Preferably, the temperature compensation module introduces a machine learning method to train a neural network model; The temperature compensation module collects data such as temperature, humidity, and pressure in the alcohol detector, and integrates this information to make more accurate predictions or corrections to the data collected by the fuel cell sensor and infrared absorption sensor.

[0009] Preferably, the data processing module receives data pre-processed by the neural network model and performs fusion optimization, which includes: Signal filtering algorithm, used to remove noise interference in collected data; The data fusion algorithm, based on Bayesian theorem, comprehensively analyzes data from different sensors to obtain a more accurate alcohol concentration value; Adaptive calibration algorithm automatically adjusts system parameters according to changes in environmental conditions, ensuring high-precision measurement results in various environments.

[0010] Preferably, the signal filtering algorithm uses a moving average filter, setting a window size , represents the number of data points involved in averaging, let the input sequence be , the filtered sequence is , then for a length of The output of the simple moving average filter is calculated as follows: For each time point , take from arrive between The average of the data points.

[0011] Preferably, the core formula of the Bayesian theorem is as follows: in, It is in the event In case of occurrence Probability of occurrence; It is in the event In case of occurrence Probability of occurrence; It's an event Probability of occurrence; It's an event The probability of occurrence is usually regarded as a normalizing constant.

[0012] Preferably, the adaptive calibration algorithm uses an extended Kalman filter and has a nonlinear discrete-time system whose state transfer equation and observation equation are: State transition equation: ; Observation equation: ; in, is the nonlinear state transfer function, is a nonlinear observation function, and are process noise and observation noise, respectively, which are usually assumed to have zero mean, is the control input.

[0013] Preferably, the main control module receives the data fused and optimized by the data processing module, and sends instructions to the alarm module according to the received data, while converting the received data into numbers and presenting them through a display screen. The main control module is integrated with a wireless communication module.

[0014] Preferably, the alarm switch is pressed three times in succession to transmit an alarm signal to the main control module, and the main control module remotely sends a support alarm signal through the wireless communication module. Pressing the alarm switch twice in succession again can cancel the alarm. Preferably, the alarm module is integrated with a three-color indicator light and a buzzer; The three-color indicator light and buzzer emit different light signals and sound prompts according to the command signal received by the alarm module; Red light: When the received alcohol concentration exceeds the preset threshold, it will flash for 3 seconds and the buzzer will emit a beeping sound; Yellow light: Press the alarm switch three times in a row to trigger it manually. It will stay on and can be turned off by pressing the alarm switch twice in a row. Green light: When the received alcohol concentration is lower than the threshold, it will flash for 3 seconds and the buzzer will not sound.

[0015] Beneficial effects Compared with the prior art, the present invention provides a high-precision alcohol detector with the following beneficial effects: 1. The present invention introduces a machine learning method to train a neural network model to integrate the temperature, humidity, pressure and other data in the alcohol detector, and then predict and correct the data collected by the fuel cell sensor and the infrared absorption sensor to improve the accuracy of detection.

[0016] 2. The present invention adopts a fuel cell sensor and an infrared absorption sensor as dual sensors, and uses a data fusion algorithm to comprehensively analyze the data from different sensors to obtain a more accurate alcohol concentration value, making the detection result more precise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure inside the main body of the instrument of the present invention.

[0018] Legend: 1. Instrument body; 2. Air blowpipe; 3. Fuel cell sensor; 4. Infrared absorption sensor; 5. Data processing module; 6. Main control module; 7. Push switch; 8. Alarm switch; 9. Alarm module. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Specific examples are given below.

[0021] Example 1: See also Figure 1 、 Figure 2 and Figure 3The present invention provides a high-precision alcohol detector, comprising: The instrument body 1 has an air blowing tube 2 disposed therein, the air blowing tube 2 communicating with the front and rear ends of the instrument body 1 , and the front end of the air blowing tube 2 protruding from the side wall of the instrument body 1 ; The fuel cell sensor 3 and the infrared absorption sensor 4 are respectively arranged on the left and right sides of the air blowing tube 2, and the sensing ends of the fuel cell sensor 3 and the infrared absorption sensor 4 pass through the left and right walls of the air blowing tube 2 and penetrate into the inner cavity of the air blowing tube 2 to collect data on the inhaled gas; A data processing module 5 is provided on the rear side of the fuel cell sensor 3 and the infrared absorption sensor 4, and the data processing module 5 is connected to the fuel cell sensor 3 and the infrared absorption sensor 4 via a data connection. The data processing module 5 is integrated with a temperature compensation module for receiving and pre-processing data collected by the fuel cell sensor 3 and the infrared absorption sensor 4; The main control module 6 is arranged at the rear side of the data processing module 5. The main control module 6 is connected to the data processing module 5 via a data connection, and is used to receive processed data and transmit the data to the alarm module 9; The push switch 7 and the alarm switch 8 are respectively mounted on the left and right walls of the instrument body 1, and the push switch 7 and the alarm switch 8 are respectively in contact with the left and right contacts of the data processing module 5. Pressing the push switch 7 once starts the alcohol detector, and pressing the push switch 7 for 5 seconds turns the alcohol detector off. An alarm module 9 is provided above the data processing module 5 and is used to issue an early warning signal and issue a warning when the detected alcohol concentration exceeds a preset threshold; The fuel cell sensor 3 measures the alcohol concentration by generating current through the oxidation reaction of ethanol under the action of a catalyst; Infrared absorption sensor 4 is based on the principle that different gases have specific absorption of infrared light of certain wavelengths. Ethanol molecules have special absorption peaks for certain wavelengths of infrared light. By measuring the intensity of these absorption peaks, the concentration of ethanol is calculated. Temperature compensation module, which introduces machine learning methods to train a neural network model; The temperature compensation module collects data such as temperature, humidity, and pressure in the alcohol detector, and integrates this information to make more accurate predictions or corrections on the data collected by the fuel cell sensor 3 and the infrared absorption sensor 4; By introducing machine learning methods to train a neural network model, the temperature, humidity, pressure and other data in the alcohol detector are integrated, and then the data collected by the fuel cell sensor 3 and the infrared absorption sensor 4 are predicted and corrected to improve the accuracy of detection.

[0022] Example 2: like Figure 1 and Figure 2 As shown, the data processing module 5 receives the data pre-processed by the neural network model and performs fusion optimization, which includes: Signal filtering algorithm, used to remove noise interference in collected data; The data fusion algorithm, based on Bayesian theorem, comprehensively analyzes data from different sensors to obtain a more accurate alcohol concentration value; Adaptive calibration algorithm automatically adjusts system parameters according to changes in environmental conditions, ensuring high-precision measurement results in various environments; The signal filtering algorithm uses a moving average filter and sets a window size , represents the number of data points involved in averaging, let the input sequence be , the filtered sequence is , then for a length of The output of the simple moving average filter is calculated as follows: For each time point , take from arrive between The average of the data points; The core formula of Bayes' theorem is as follows: in, It is in the event In case of occurrence Probability of occurrence; It is in the event In case of occurrence Probability of occurrence; It's an event Probability of occurrence; It's an event The probability of occurrence is usually considered as a normalizing constant; The adaptive calibration algorithm uses an extended Kalman filter and has a nonlinear discrete-time system whose state transfer equation and observation equation are: State transition equation: ; Observation equation: ; in, is the nonlinear state transfer function, is a nonlinear observation function, and are process noise and observation noise, respectively, which are usually assumed to have zero mean, is the control input; By adopting dual sensors, fuel cell sensors and infrared absorption sensors, and using data fusion algorithms to comprehensively analyze data from different sensors, a more accurate alcohol concentration value can be obtained, making the test results more precise.

[0023] The main control module 6 receives the data fused and optimized by the data processing module 5, and sends instructions to the alarm module 9 according to the received data. At the same time, it converts the received data into numbers and presents them on the display screen. The main control module 6 is integrated with a wireless communication module.

[0024] Pressing the alarm switch 8 three times continuously transmits an alarm signal to the main control module 6, which then sends a support alarm signal remotely via the wireless communication module. Pressing the alarm switch 8 twice more continuously can cancel the alarm. The alarm module 9 is integrated with a three-color indicator light and a buzzer; The three-color indicator light and buzzer emit different light signals and sound prompts according to the command signal received by the alarm module 9; Red light: When the received alcohol concentration exceeds the preset threshold, it will flash for 3 seconds and the buzzer will emit a beeping sound; Yellow light: Press the alarm switch 8 three times to trigger it manually, it will stay on, and you can press the alarm switch 8 twice to turn it off. Green light: When the received alcohol concentration is lower than the threshold, it will flash for 3 seconds and the buzzer will not sound.

[0025] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A high-precision alcohol detector, characterized in that: include: An instrument body (1) is provided with an air blowing pipe (2) therein, wherein the air blowing pipe (2) is connected to the front end and the rear end of the instrument body (1), and the front end of the air blowing pipe (2) protrudes from the side wall of the instrument body (1); The fuel cell sensor (3) and the infrared absorption sensor (4) are respectively arranged on the left and right sides of the air blowing pipe (2), and the sensing ends of the fuel cell sensor (3) and the infrared absorption sensor (4) penetrate the left and right walls of the air blowing pipe (2) and probe into the inner cavity of the air blowing pipe (2) for collecting data of the inhaled gas; a data processing module (5) disposed on the rear side of the fuel cell sensor (3) and the infrared absorption sensor (4), the data processing module (5) being connected to the fuel cell sensor (3) and the infrared absorption sensor (4) via data; a temperature compensation module being integrated into the data processing module (5) for receiving and pre-processing data collected by the fuel cell sensor (3) and the infrared absorption sensor (4); A main control module (6) is arranged on the rear side of the data processing module (5), and the main control module (6) is connected to the data processing module (5) via data, and is used to receive processed data and transmit the data to the alarm module (9); A push switch (7) and an alarm switch (8) are respectively mounted on the left and right walls of the instrument body (1), and the push switch (7) and the alarm switch (8) are respectively in contact with the left and right contacts of the data processing module (5). Pressing the push switch (7) once starts the alcohol detector, and pressing the push switch (7) for 5 seconds turns the alcohol detector off. An alarm module (9) is arranged above the data processing module (5) and is used to issue an early warning signal and issue a warning when the detected alcohol concentration exceeds a preset threshold.

2. A high-precision alcohol detector according to claim 1, characterized in that: The fuel cell sensor (3) measures the alcohol concentration by generating current through an oxidation reaction of ethanol under the action of a catalyst; The infrared absorption sensor (4) is based on the principle that different gases have specific absorption properties for infrared light of certain wavelengths. Ethanol molecules have specific absorption peaks for certain wavelengths of infrared light. By measuring the intensity of these absorption peaks, the concentration of ethanol can be calculated.

3. A high-precision alcohol detector according to claim 1, characterized in that: The temperature compensation module introduces a machine learning method to train a neural network model; The temperature compensation module collects data such as temperature, humidity, and pressure in the alcohol detector, and integrates this information to more accurately predict or correct the data collected by the fuel cell sensor (3) and the infrared absorption sensor (4).

4. A high-precision alcohol detector according to claim 1, characterized in that: The data processing module (5) receives the data pre-processed by the neural network model and performs fusion optimization, which includes: Signal filtering algorithm, used to remove noise interference in collected data; The data fusion algorithm, based on Bayesian theorem, comprehensively analyzes data from different sensors to obtain a more accurate alcohol concentration value; Adaptive calibration algorithm automatically adjusts system parameters according to changes in environmental conditions, ensuring high-precision measurement results in various environments.

5. A high-precision alcohol detector according to claim 4, characterized in that: The signal filtering algorithm uses a moving average filter, setting a window size , represents the number of data points involved in averaging, let the input sequence be , the filtered sequence is , then for a length of The output of the simple moving average filter is calculated as follows: For each time point , take from arrive between The average of the data points.

6. A high-precision alcohol detector according to claim 4, characterized in that: The core formula of Bayes' theorem is as follows: in, It is in the event In case of occurrence Probability of occurrence; It is in the event In case of occurrence Probability of occurrence; It's an event Probability of occurrence; It's an event The probability of occurrence is usually regarded as a normalizing constant.

7. A high-precision alcohol detector according to claim 4, characterized in that: The adaptive calibration algorithm uses an extended Kalman filter and has a nonlinear discrete-time system whose state transfer equation and observation equation are: State transition equation: ; Observation equation: ; in, is the nonlinear state transfer function, is a nonlinear observation function, and are process noise and observation noise, respectively, which are usually assumed to have zero mean, is the control input.

8. A high-precision alcohol detector according to claim 1, characterized in that: The main control module (6) receives the data fused and optimized by the data processing module (5), and sends instructions to the alarm module (9) based on the received data, and at the same time converts the received data into numbers and displays them on a display screen. A wireless communication module is integrated on the main control module (6).

9. A high-precision alcohol detector according to claim 8, characterized in that: The alarm switch (8) is pressed three times in succession to transmit an alarm signal to the main control module (6), and the main control module (6) remotely sends a support alarm signal through the wireless communication module. Pressing the alarm switch (8) twice in succession again can cancel the alarm.

10. A high-precision alcohol detector according to claim 1, characterized in that: The alarm module (9) is integrated with a three-color indicator light and a buzzer; The three-color indicator light and the buzzer emit different light signals and sound prompts according to the command signal received by the alarm module (9); Red light: When the received alcohol concentration exceeds the preset threshold, it will flash for 3 seconds and the buzzer will emit a beeping sound; Yellow light: manually triggered by pressing the alarm switch (8) three times in a row, it remains on, and can be turned off by pressing the alarm switch (8) twice in a row; Green light: When the received alcohol concentration is lower than the threshold, it will flash for 3 seconds and the buzzer will not sound.

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