The invention discloses a method and a device for distinguishing abnormal driving behaviors. The method comprises the following steps: acquiring and storing real-time track data of a vehicle, whereinthe track data includes at least two of vehicle speed, acceleration, vehicle spacing, vehicle deviation distance and lane change frequency; reading historical track data of the vehicle, and performingcalculation to obtain a historical average value of the related track data; calculating a composite function value for distinguishing abnormal driving, and determining the danger level of a driving behavior according to the composite function value; and giving an abnormal driving behavior prompting alarm when the danger level of the driving behavior belongs to abnormal driving. The method provided by the invention is convenient in calculation, high in real-time performance and operability, and capable of effectively preventing abnormal driving behaviors such as drunk driving and fatigue driving so as to improve the road traffic safety.

Method and device for distinguishing abnormal driving behaviors

The invention discloses a pure electric vehicle endurance mileage calculating method and system. The pure electric vehicle endurance mileage calculating method comprises the following steps that the electric energy consumption rate corresponding to the speed of a whole vehicle is calibrated in advance; when the vehicle runs based on vehicle navigation, road condition information corresponding to each road section of roads planned through vehicle navigation is obtained, and the electric energy consumption rate corresponding to the speed is obtained according to the speed in the road condition information corresponding to each road section of roads; according to the electric energy consumption rate corresponding to each road section, corresponding path length and current remaining battery capacity, the endurance mileage of the automobile running in paths planned through vehicle navigation is calculated.

Pure electric vehicle endurance mileage calculating method and system

The invention discloses a bicycle navigation device which comprises an intelligent mobile terminal, a main control module, a wireless communication module and a navigation indicating module. The intelligent mobile terminal is used for generating navigation path information according to the initial position and a destination position of a bicycle, acquiring current position information of the bicycle, matching the current position information of the bicycle with the navigation path information, and regenerating new navigation path information according to the current position information of the bicycle and a destination position if the deviation distance of the current position information of the bicycle and a navigation path reaches a certain degree; the wireless communication module is used for connecting the intelligent mobile terminal and receiving the navigation path information transmitted by the intelligent mobile terminal; the main control module is used for connecting the wireless communication module and the navigation indicating module, receiving the navigation path information transmitted by the wireless communication module and controlling the navigation indicating operations of the navigation indicating module according to the navigation path information. The navigation device has the advantages of simple structure, working stability, high cruising ability and safety and low cost.

Bicycle navigation device and navigation method thereof

The embodiments of the invention relate to a method for estimating the residual driving mileage capacity of an electric vehicle upon arrival at the destination, electronic equipment and a computer readable storage medium. The electric vehicle transmits navigation segment driving path information and driving parameters of the vehicle to a server, an energy consumption analysis model established bythe server through big data analysis is used for calculating driving energy consumption and accessory energy consumption of a segment upon arrival at the destination, and based on the estimated driving energy consumption and accessory energy consumption, expected energy consumption information of the vehicle upon arrival at the destination is determined and updated in real time. In the way, dynamic display of the driving mileage of current vehicle instruments is instead, the electric vehicle is able to accurately estimate the residual driving mileage capacity upon arrival at the destination, and then helps users to arrange driving routes reasonably; and in addition, through the embodiments of the invention, an estimation mode is switched under the conditions of online, offline and the likeaccording to the change of the communication environment.

Method for estimating residual driving mileage capacity of electric vehicle upon arrival at destination and equipment

The invention relates to the field of shared bicycles, in particular to a navigation system for a shared bicycle. The navigation system comprises a bicycle lock master control unit, a display unit and a navigation module, wherein the bicycle lock master control unit controls on/off of a display screen; the display unit at least comprises the display screen; and the navigation module performs travel route navigation according to a GPS signal. The invention further relates to a multimedia system for the shared bicycle, and the multimedia system comprises a bicycle lock master control unit, a cloud server and a display unit, wherein the display unit at least comprises a display screen; the cloud server pushes multimedia data into the bicycle lock master control unit; and the bicycle lock master control unit controls the display screen to display the multimedia data according to preset conditions. As the display screen with the navigation function is arranged on the shared bicycle, and navigation is provided for a user, convenience is brought for the user to go out, and the dangerous behavior that the user holds navigation equipment and checks routes while riding is avoided; and meanwhile, multimedia information is played on the display screen according to preset conditions, so that multimedia information is provided for the user.

Navigation system and multimedia system for shared bicycle

The invention discloses an estimation method for endurance mileage of an electric vehicle, which comprises the following steps: 1, collecting battery electric quantity, consumed in the corresponding path, of the electric vehicle, and counting in advance to acquire data of the battery electric quantity averagely consumed by each path; 2, acquiring a running path from the current position to the destination position through a navigation system, and acquiring data of the battery electric quantity needing to be consumed according to the data of the battery electric quantity averagely consumed by each path; 3, comparing the data of the current battery electric quantity of the electric vehicle with the data of the battery electric quantity needing to be consumed; and 4, under the condition that the data of the current battery electric quantity of the electric vehicle is greater than the data of the battery electric quantity needing to be consumed, enabling the electric vehicle to prompt the data of the surplus electric quantity after arrival; under the condition that the data of the current battery electric quantity of the electric vehicle is less than the data of the battery electric quantity needing to be consumed, enabling the electric vehicle to prompt the position information that the electric vehicle can arrive in the running path; and under the condition that the data of the current battery electric quantity of the electric vehicle is equal to the data of the battery electric quantity needing to be consumed, enabling the electric vehicle to prompt that the surplus electric quantity is 0 after arrival The estimation method overcomes the problem of very poor accuracy of an endurance mileage estimation result in the prior art and realizes accurate prediction of the endurance mileage

Estimation method for endurance mileage of electric vehicle

The invention discloses a method for generating a feedback braking torque of an electric car. The method comprises the following steps: acquiring driver braking torque requirements which do not influence normal driving feeling of drivers under different motor rotary speeds through a pre-set parameter table for calibrating a maximum braking torque, and calculating a maximum allowable braking torque of a corresponding battery; taking the minimum one of the maximum allowable braking torque of the corresponding battery and the maximum allowable braking torque of the motor as a feedback braking torque request at the current state; calculating a feedback braking torque T=T_0/N to be output at present, and carrying out primary output; judging the feedback braking torque T, which is gradually increased and output in each calculation period, in an ABS (Anti-skid Brake System) at always inactivated, activated and inactivated states, and under the condition that a braking process undergoes the activated state of the ABS; halving the value of the T obtained by the last calculation period, and then outputting; and keeping the T value of the last calculation period unchanged. According to the method disclosed by the invention, a braking wheel is prevented from being locked, and the feedback braking torque can be generated as much as possible so that the braking energy is recycled.

Method for generating feedback braking torque of electric car

The invention discloses a navigation system for public bicycles. The navigation system comprises a navigation display device (2), a bluetooth module and an intelligent mobile device. The navigation display device (2) is arranged on a front (1) of a public bicycle. The intelligent mobile device is provided with a navigation module, which is connected to the navigation display device (2) through the bluetooth module so as to display a navigation signal. By the navigation system for public bicycles, problems such as complex system, high power consumption and high cost existing in the prior art are overcome, and convenient, safe and efficient navigation is realized.

Navigation system for public bicycles

The invention provides a driving behavior assessment method. The driving behavior assessment method comprises the steps that 1, according to collected information, driving behaviors are judged into the following six conditions of whether drunk driving or not, whether fatigue driving or not, whether attention focusing or not, whether furious driving or not, whether frequent lane changing or not and whether intense driving or not; 2, the driving behaviors of the six conditions are set into preset weighted values, in driving circulating of preset times, according to judged results of the six conditions, the set preset weighted values in the driving behaviors of the six conditions are overlapped and calculated to obtain a result; and 3, when the obtained result is located in a first section, the driving behaviors of a driver are judged to be good, when the obtained result is located in a second section, the driving behaviors of the driver are judged to be ordinary, and when the obtained result is located in a third section, the driving behaviors of the driver are judged to be bad. According to the driving behavior assessment method, extraction of driving characteristics of the driver is achieved, and driving behavior assessment is conducted through driving characteristic data.

Driving behavior assessment method

The invention discloses an electric vehicle drive-by-wire device based on CANs The electric vehicle drive-by-wire device based on the CANs comprises a vehicle control unit, an intelligent driving module and an actuator, wherein the vehicle control unit is used for judging the reasonability of driving requirement information according to vehicle state information and the driving requirement information, and sending request information to the actuator under the condition that the driving requirement information is reasonable, and the vehicle control unit is provided with the first CAN and the second CAN; the intelligent driving module is used for inputting the driving requirement information and receiving the vehicle state information, and is connected to the first CAN; and the actuator is used for actuating the request information and feeding back the vehicle state information, and is connected to the second CAN According to the electric automobile drive-by-wire device based on the CANs, the defect that unreasonable driving commands are sent due to the fact that a driving module in the prior art is prone to program errors or invasion is overcome, and system safety is greatly improved

Electric vehicle drive-by-wire device based on CANs

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