CN-122009196-A - Safe driving method, safe driving device, and computer-readable storage medium for vehicle

Abstract

The embodiment of the application provides a safe driving method, a safe driving device and a computer readable storage medium of a vehicle, wherein the method comprises the steps of collecting the exhaled air of a current driver, detecting the concentration of ethanol in the exhaled air, identifying the parameter variation of the environment in the vehicle, correcting the concentration of ethanol according to the parameter variation, and obtaining the actual concentration of ethanol of the exhaled air so as to allow driving under the condition that the actual concentration of ethanol is smaller than or equal to a preset safety threshold value. Therefore, the method corrects the concentration of the ethanol detected and output through the parameter change of the environment in the vehicle so as to reduce or offset the detection error caused by the environmental interference, improve the detection accuracy of the concentration of the ethanol and the detection consistency under different environments, and provide a guarantee for safe driving of the vehicle.

Inventors

• LIN ZHONGXIONG
• FAN YUAN
• ZENG BIN

Assignees

• 广州汽车集团股份有限公司

Dates

Publication Date

20260512

Application Date

20260212

Claims (10)

1. 1. A safe driving method of a vehicle, comprising: collecting the exhaled air of the current driver; detecting the concentration of ethanol in the exhaled air, and identifying the parameter variation of the environment in the vehicle; and correcting the ethanol concentration according to the parameter variation to obtain the actual ethanol concentration of the exhaled gas, so as to allow driving under the condition that the actual ethanol concentration is smaller than or equal to a preset safety threshold.
2. 2. The safe driving method according to claim 1, wherein the parameter variation includes a humidity variation, a temperature variation, a gas pressure variation, and a total volatile organic compound concentration variation, and correcting the ethanol concentration according to the parameter variation to obtain the actual ethanol concentration of the exhaled gas includes: determining a target correction coefficient according to the humidity variation, the temperature variation and the air pressure variation; Correcting the ethanol concentration according to the target correction coefficient to obtain a first concentration; And adjusting the first concentration according to the total volatile organic compound concentration variation to obtain the actual ethanol concentration.
3. 3. The safe driving method according to claim 2, characterized in that determining a target correction coefficient from the humidity change amount, the temperature change amount, and the air pressure change amount includes: Obtaining the product of the humidity variation and the first correction coefficient to obtain the first correction coefficient; obtaining the product of the ratio between the temperature variation and the initial temperature and the second correction coefficient to obtain the second correction coefficient; obtaining the product of the ratio of the air pressure variation to the initial air pressure and the third correction coefficient to obtain the third correction coefficient; And obtaining the sum of the first correction coefficient, the second correction coefficient, the third correction coefficient and the initial correction coefficient to obtain the target correction coefficient.
4. 4. The safe driving method according to claim 2, wherein adjusting the first concentration according to the total volatile organic compound concentration variation amount to obtain the actual ethanol concentration includes: obtaining the product of the total volatile organic compound concentration variation and a fourth correction coefficient to obtain an adjusted concentration adjustment value; and obtaining the difference value between the first concentration and the concentration adjustment value to obtain the actual ethanol concentration.
5. 5. The safe driving method according to claim 1, wherein the vehicle includes a plurality of gas sensors that detect the concentration of ethanol in the exhaled breath, comprising: identifying the ethanol concentration based on a gas detection signal output from one of the plurality of gas sensors, and After the actual ethanol concentration is obtained, performing validity detection on the actual ethanol concentration based on gas detection signals output by the remaining gas sensors in the plurality of gas sensors; In the case where the actual ethanol concentration passes the validity detection, alcohol detection is performed on the driver based on the actual ethanol concentration.
6. 6. The safe driving method according to claim 5, wherein the plurality of gas sensors include a semiconductor sensor, an electrochemical sensor, and a catalytic combustion sensor, the identifying the ethanol concentration based on a gas detection signal output from one of the plurality of gas sensors includes: Determining the ethanol concentration according to a current value output by the electrochemical sensor and a first calibration relation, wherein the first calibration relation represents the relation between the current value and the ethanol concentration; the effective detection of the actual ethanol concentration based on the gas detection signals output from the remaining gas sensors of the plurality of gas sensors includes: And under the condition that the resistance value output by the semiconductor type sensor is in exponential negative correlation with the actual ethanol concentration and the voltage value output by the catalytic combustion type sensor is in linear positive correlation with the actual ethanol concentration, determining that the actual ethanol concentration passes the validity detection.
7. 7. The safe driving method according to any one of claims 1 to 6, characterized in that, in the case where the actual ethanol concentration is less than or equal to a preset safe threshold value, the method further comprises: acquiring operation data of a vehicle; Determining a comprehensive risk value according to the operation data and the actual ethanol concentration; and generating an early warning signal according to a risk interval in which the comprehensive risk value is located.
8. 8. The safe driving method of claim 7, wherein the operating data includes a current vehicle speed and a historical steering frequency, and determining a composite risk value from the operating data and the actual ethanol concentration comprises: obtaining the product of the ratio between the actual ethanol concentration and the preset ethanol concentration and a first weight coefficient to obtain a first risk value; obtaining the product of the ratio between the current vehicle speed and the preset vehicle speed and a second weight coefficient to obtain a second risk value; obtaining the product of the ratio between the historical steering frequency and the preset steering frequency and a third weight coefficient to obtain a third risk value; and obtaining a sum value of the first risk value, the second risk value and the third risk value to obtain the comprehensive risk value.
9. 9. A safe driving device of a vehicle, characterized by comprising: The collecting module is used for collecting the exhaled air of the current driver; The detection module is used for detecting the concentration of the ethanol in the exhaled air and identifying the parameter variation of the environment in the vehicle; And the control module is used for correcting the ethanol concentration according to the parameter variation to obtain the actual ethanol concentration of the exhaled gas so as to allow driving under the condition that the actual ethanol concentration is smaller than or equal to a preset safety threshold.
10. 10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when executed by a processor, implements the method of any of claims 1-8.

Description

Safe driving method, safe driving device, and computer-readable storage medium for vehicle Technical Field The embodiment of the application relates to the technical field of vehicle control, in particular to a safe driving method, a safe driving device and a computer readable storage medium of a vehicle. Background Along with the strict global drunk driving regulations, the vehicle-mounted alcohol detection technology becomes an important direction of intelligent automobile safety configuration. In the related art, the sensor arranged at the air outlet of the steering wheel or the air conditioner is used for collecting the gas exhaled by the driver, detecting the concentration of ethanol in the gas and triggering an alarm when the concentration of ethanol exceeds a threshold value, but the alcohol detection accuracy of the scheme is general and is not beneficial to the safe driving of the vehicle. Disclosure of Invention The embodiment of the application provides a safe driving method, a safe driving device and a computer readable storage medium of a vehicle, aiming at improving the general problem of alcohol detection accuracy in the related art. An embodiment of the first aspect of the application provides a safe driving method of a vehicle, which comprises the steps of collecting the exhaled air of a current driver, detecting the concentration of ethanol in the exhaled air, identifying the parameter variation of the environment in the vehicle, and correcting the concentration of ethanol according to the parameter variation to obtain the actual concentration of ethanol in the exhaled air so as to allow driving under the condition that the actual concentration of ethanol is smaller than or equal to a preset safe threshold. According to the safe driving method of the vehicle, firstly, the exhaled air of the current driver is collected, the ethanol concentration in the exhaled air is detected, the parameter variation of the environment in the vehicle is identified, the ethanol concentration is corrected according to the parameter variation, and the actual ethanol concentration of the exhaled air is obtained, so that driving is allowed under the condition that the actual ethanol concentration is smaller than or equal to a preset safe threshold value. Therefore, the method corrects the concentration of the ethanol detected and output through the parameter change of the environment in the vehicle so as to reduce or offset the detection error caused by the environmental interference, improve the detection accuracy of the concentration of the ethanol and the detection consistency under different environments, and provide a guarantee for safe driving of the vehicle. In addition, the safe driving method of the vehicle according to the above embodiment of the present application may further have the following additional technical features: According to one embodiment of the application, the parameter variation comprises a humidity variation, a temperature variation, an air pressure variation and a total volatile organic compound concentration variation, and the ethanol concentration is corrected according to the parameter variation to obtain the actual ethanol concentration of the exhaled air. Based on the technical scheme, the mathematical relationship between the sensor response value and the environmental parameter (such as correcting sensitivity drift through polynomial fitting) is established by collecting the temperature and humidity, air pressure and the concentration of VOCs in the vehicle in real time, so that the environmental interference is eliminated, and the detection precision is improved. According to one embodiment of the application, a target correction coefficient is determined according to the humidity change amount, the temperature change amount and the air pressure change amount, and the target correction coefficient is obtained by obtaining a product of the humidity change amount and the first correction coefficient to obtain a first correction coefficient, obtaining a product of a ratio between the temperature change amount and the initial temperature and the second correction coefficient to obtain a second correction coefficient, obtaining a product of a ratio between the air pressure change amount and the initial air pressure and the third correction coefficient to obtain a third correction coefficient, and obtaining a sum of the first correction coefficient, the second correction coefficient, the third correction coefficient and the initial correction coefficient to obtain the target correction coefficient. Based on the above technical solution, the target correction coefficient is calculated by the formula k=1+α×Δrh+β× (Δt/T 0)+γ×ΔP/P0, which reduces the utilization rate of calculation resources and improves the calculation correction efficiency. According to one embodiment of the application, the first concentration is adjusted according to the total volatile organic compound concentrat