42results about How to "Avoid driving risks" patented technology

Provided is a power control method of a battery management system. The power control method of the battery management system includes the following steps: building a maximum allowable discharge power and temperature, and a two dimensional power meter of a stress optical coefficient (SOC); detecting the temperature and the SOC value under the current working mode of each battery monomer voltage in a battery pack and the battery pack, checking the chart and estimating the current maximum allowable discharge power P of the battery pack according to a linear interpolation method; finding out the battery monomer voltage value with the lowest voltage in the battery pack, setting the maximum allowable target discharge power at the moment according to the battery monomer voltage value; delivering the given maximum allowable target discharge power to the finished vehicle controller which carries out the relevant control.

The invention provides an intelligent control method and system for vehicle driving modes. According to the intelligent control method and system for the vehicle driving modes, the driving modes can be directly selected and switched through a point-touch switch, operation is easy, and the universality is high. The intelligent control method comprises the steps that a vehicle body controller receives mode selection information from the point-touch switch; the mode selection information is sent to an automatic transmission controller; whether a vehicle is allowed to enter the selected driving mode corresponding to the mode selection information is judged according to the current gear level position and a preset priority event; if yes, the vehicle enters the selected driving mode, and the fact that the vehicle enters the selected driving mode is prompted through an instrument panel; if not, the vehicle does not enter the selected driving mode, and the fact that the vehicle does not enter the selected driving mode is prompted through the instrument panel.

The invention discloses a method and system for predicting the danger level of pedestrians around a vehicle, and belongs to the technical field of intelligent vehicle active safety. Pedestrian trajectory prediction is carried out based on the first view angle data of the vehicle, long-time trajectory prediction is realized by using data-driven sequential network modeling, the calculation cost is reduced, and the prediction duration is shortened; a danger level recognizer based on clustering analysis and a classifier can recognize the danger level of pedestrians according to the characteristicparameters, and uncertainty caused by judging the danger level by manually dividing parameter ranges is avoided; a pedestrian moving track is predicted according to the pedestrian track fitting deviceobtained by training, a pedestrian characteristic parameter set is extractd, the parameter set is input into the pedestrian danger level recognizer obtained by training, and the pedestrian danger level is predicted. According to the invention, understanding of behavior intentions of surrounding pedestrians in the driving process is facilitated, the collision risk of pedestrians and vehicles is estimated, a basis is provided for adjusting a driving strategy, the driving risk is avoided, and the driving safety is improved.

The embodiment of the application discloses a lane center line determining method and device which is applied to the field of automatic driving, and is used for accurately determining a lane center line so as to control an intelligent automobile to safely drive. The method provided by the embodiment of the invention comprises the following steps: firstly, obtaining driving track points representing position information of vehicles around a target vehicle in a driving process, then carrying out data processing on every two driving track points which are adjacent in time and belong to the same vehicle so as to respectively determine corresponding straight lines; determining the target equation parameter according to the determined equation parameter corresponding to each straight line; and finally, accurately determining the lane center line according to the target equation parameter.

The invention discloses a radar ranging method based on the Doppler principle. The radar ranging method comprises the following steps that a radar transmits electromagnetic waves and then receives electromagnetic waves; the Doppler frequency is obtained according to a formula, and whether or not a measured object is close to or far away from the radar according to the size of the transmitted electromagnetic waves and the size of the received electromagnetic waves; the relation between the Doppler frequency and the relative velocity is obtained according to multiple times of testing and measurement; the approximate distance between the radar and a transmitting object is calculated according to the delay time of transmitting the electromagnetic waves and the delay time of receiving the electromagnetic waves; and the time needed when the measured object and the radar are located at the same position is calculated according to a velocity and displacement formula, and a user is reminded toperform a correct operation according to the time. The relative velocity and the distance between the measured object and the radar and the time needed when the measured object runs into the vehicle-mounted radar are calculated by means of the Doppler principle, the condition that two vehicles collide is avoided, the ranging mode is simple and convenient to operate, the radar terminal quickly calculates and processes data, the driver can quickly perform the correct driving operation, and therefore the driving safety is improved.

The present invention discloses chewing gum with satiety and a preparation method thereof. The chewing gum comprises the following components in weight percentages: 32%-37% of gum bases, 12%-16% of erythritol, 12%-14% of mannitol, 0.01%-0.03% of acesulfame, 12%-16% of yeast beta-glucan, 5.8%-6.4% of crystalline cellulose, 0.5%-0.7% of lecithin, 0.8%-1% of glycerol, 0.2%-0.4% of citric acid, 1%-2% of spices, 4%-4.5% of titanium dioxide, and 8%-10% of talcum powder. The preparation method comprises the following steps of gum base melting and kneading, material mixing, yeast beta-glucan mixing, cooling, extruding and molding, cutting, polishing, powdered sugar coating and finished product obtaining. High viscosity and gelation property of the yeast beta-glucan are used to increase gastric mucosal barrier effects, inhibit sugar metabolism and alleviate hunger feeling, the other components are combined to prepare the chewing gum, and the chewing gum is convenient to carry, can be chewed at any time, can prevent dizziness, inattention, etc. caused by the hunger feeling, is especially suitable for long-distance drivers to use, and effectively avoids driving risks.

The invention discloses a method and system for predicting the danger level of pedestrians around a vehicle, belonging to the technical field of active safety of intelligent vehicles. The present invention predicts pedestrian trajectories based on vehicle first-view data, uses data-driven time series network modeling to realize long-term trajectory prediction, reduces computing costs, and shortens the duration of prediction; the hazard level recognizer based on cluster analysis and classifiers can The characteristic parameters identify the pedestrian danger level, avoiding the uncertainty caused by artificially dividing the parameter range to determine the danger level; predict the pedestrian movement trajectory according to the pedestrian trajectory fitting device obtained through training, extract the pedestrian characteristic parameter set, and input the parameter set into In the trained pedestrian danger level recognizer, the pedestrian danger level is predicted. The invention helps to understand the behavior intentions of surrounding pedestrians during driving, estimates the collision risk of pedestrians and vehicles, provides a basis for adjusting driving strategies, avoids driving risks, and improves driving safety.

The invention provides an intelligent control method and system for vehicle driving modes. According to the intelligent control method and system for the vehicle driving modes, the driving modes can be directly selected and switched through a point-touch switch, operation is easy, and the universality is high. The intelligent control method comprises the steps that a vehicle body controller receives mode selection information from the point-touch switch; the mode selection information is sent to an automatic transmission controller; whether a vehicle is allowed to enter the selected driving mode corresponding to the mode selection information is judged according to the current gear level position and a preset priority event; if yes, the vehicle enters the selected driving mode, and the fact that the vehicle enters the selected driving mode is prompted through an instrument panel; if not, the vehicle does not enter the selected driving mode, and the fact that the vehicle does not enter the selected driving mode is prompted through the instrument panel.

Provided is a power control method of a battery management system. The power control method of the battery management system includes the following steps: building a maximum allowable discharge power and temperature, and a two dimensional power meter of a stress optical coefficient (SOC); detecting the temperature and the SOC value under the current working mode of each battery monomer voltage in a battery pack and the battery pack, checking the chart and estimating the current maximum allowable discharge power P of the battery pack according to a linear interpolation method; finding out the battery monomer voltage value with the lowest voltage in the battery pack, setting the maximum allowable target discharge power at the moment according to the battery monomer voltage value; delivering the given maximum allowable target discharge power to the finished vehicle controller which carries out the relevant control.

The invention discloses a TCU and a method for detecting and processing faults of an automatic transmission through the TCU. The method comprises the following steps of: detecting whether the automatic transmission has off-gear faults or not while determining that the automatic transmission completes gear shifting; and while determining that the automatic transmission has off-gear faults, diagnosing the off-gear fault type of the automatic transmission. With the adoption of the technical scheme, the off-gear faults can be detected, so that traveling safety is strengthened.

The invention discloses a charging path navigation method in long-distance transportation of electric vehicles. Traditional path selection is just a simple shortest path search. The method of the present invention first determines two constraints, then collects the models of different charging piles, corresponding to different charging prices and charging efficiencies, and then considers the overall logistics and transportation cost, and selects the most cost-effective transportation route and charging strategy. Using the BellmanFord algorithm, iterating over each possible transportation path, adding the charging price and charging efficiency matrix W ij ∈{P 1 P 2 P 3 } and S ij ={M 1 M 2 M 3 }, find the most cost-effective path and charging strategy. The method of the invention inputs the rechargeable nodes in the transportation process when determining the vehicle for transporting logistics and the weight of the items for transporting logistics, and provides the logistics transport driver with the optimal driving path and charging intelligently under the condition of controlling the risk factor. The strategy takes into account the time factor of driving and the economic factor of the charging cost, and provides a cost-effective strategy.

The invention relates to a multifunctional vehicle central control system which comprises a control unit, a display screen and a signal transceiving device. The control unit comprises a capacitive touch screen controller, a vehicle navigation control module and a microcontroller, the display screen comprises a projection capacitive touch display screen connected with the capacitive touch screen controller and a capacitive touch sensing switch connected with the microcontroller, and the signal transceiving device transmits signals collected by a vehicle related accessory system sensor to the control unit; the capacitive touch screen controller can convert transverse and longitudinal position original analog signals output by the projection capacitive touch display screen into data flow composed of multiple X and Y coordinate points and transmit the data flow to a DSP (digital signal processor) controlling and processing module and a central processing unit to calculate an accurate position of a body on the projection capacitive touch display screen and decode the accurate position into corresponding gesture indication. The multifunctional vehicle central control system is high in touch sensitivity and supportive of multipoint touch, and comfort of a vehicle and attractiveness of upholstery are improved to a great extent.

The invention provides a method for judging faults of a rotation speed sensor of a double clutch transmission output shaft. The method comprises the following steps: judging whether the difference between arithmetic mean values of rotation speed signals of the double clutch transmission output shaft and rotation speed signals of driving wheels of an ABS is within an acceptable deviation range; when the difference is within the acceptable deviation range, judging whether omega inp is equal to omega outp*igear, wherein omega inp is a rotation speed signal of the double clutch transmission output shaft, omega outp is a rotation speed signal of the double clutch transmission output shaft, and igear is the total transmission ratio of a shift when a double clutch transmission is in stable transmission; when omega inp is not equal to omega outp*igear, judging whether omega engine is equal to omega outp*igear, wherein omega engine is a rotation speed signal of an engine; when omega engine is not equal to omega outp*igear, transmitting a signal for indicating that the rotation speed sensor of the double clutch transmission output shaft has faults. By adopting the method, the false alarm rate of the rotation speed sensor of the double clutch transmission output shaft is greatly reduced.