51results about How to "Improve safe driving performance" patented technology

The invention discloses a system for avoiding obstacles, particularly relates to a system and method for avoiding collision and obstacles for a driverless bus, and belongs to the technical field of driverless buses. The system comprises a control system (1), a power supply device (2), an actuating mechanism (3), a detection device (4) and buffer devices (5), wherein the actuating mechanism (3) and the detection device (4) are in signal connection with the control system (1); the control system (1), the actuating mechanism (3) and the detection device (4) are connected with the power supply device (2); buffer devices (5) are mounted on the front end, the rear end and the both sides of the vehicle body; and the detection device (4) comprises a visual sensor (401), a gyroscope (402), an ultrasonic sensor (403) and a radar sensor (404). The system enables the driverless bus to safely and effectively avoid the obstacles, so the incidence of accidents is reduced and the intelligence level of the driverless bus is enhanced.

The invention discloses a safety evaluation method for a steep slope and a bending road, and is used for solving the technical problem that the random error and accumulated error are bigger and the road slope can't be measured when data is lost in the existing road slope measurement, and belongs to the field of road safety. The safety evaluation method for the steep slope and the bending road carries out section description and piecewise fitting for tested road sections according to the vehicle-mounted global position system (GPS) measurement information, combines inertial measurement unit (IMU) measurement information to carry out spline interpolation and smoothing processing for road sections with less GPS measurement records when the GPS records are insufficient to carry out the smooth processing or GPS records are lost as drivers drive in the cave, then get the fitting curved surface equation of the roads so as to calculate the turning radius and the slope of the roads. The safety evaluation method for the steep slope and the bending road then moves the roads ahead hop by hop by using recursive estimation, eliminates the influence of cumulative errors in measurement through the limited memory method, improves the calculation precision of geometrical parameters such as the road slope and the curvature, solves the technical problem that the existing roads are difficult to measure, provides the basis for the traffic management department to carry out road surface monitoring and acceptance inspection, and meanwhile proposes load and speed requirements for the safety traffic on the road section.

The invention discloses a four-wheel-driven bowed tractor transport vehicle, which comprises a frame and a rear axle assembly. The frame is provided with an engine, a clutch, a hydraulic steering gear and a front axle assembly, wherein the front axle assembly comprises a front axle box connected with a main gearbox, and the main gearbox is connected with a transfer gearbox which is provided with a power output shaft of the transfer gearbox; and the rear axle assembly comprises a car hopper and a rear axel half shaft which is provided with a rear axle transaxle in drive connection with the power output shaft of the transfer gearbox by a universal drive shaft. The transport vehicle makes the car hopper acquire drive capability, solves the problems of poor climbing ability and slippage tires when loaded, greatly improves the loading capability of the transport vehicle, reduces energy consumption, prevents the tires from being worn untimely, prolongs service life, and is especially applicable for severe environments, such as mountain areas, slopes and depressions, forestry, pastures, roadless areas, and so on.

The invention proposes a controlling method for an electric car. The method comprises the following steps: detecting whether the position of a shift lever of the car is changed or not; if the position of the shift lever is changed, judging the state of the car according to the present position and the prior position of the shift lever, and detecting the present speed of the car; if the car is in the first state, comparing the present speed with the first predetermined speed; if the speed is smaller than or equal to the first predetermined speed, adjusting the present speed to the first predetermined speed, otherwise, calculating a target gear of an automatic gearbox according to the present speed; judging whether the target gear is the same as the present gear or not; if the target gear is different from the present gear, matching the automatic gearbox to the target gear, otherwise, adjusting the present speed directly according to a control signal of a driver. The controlling method of the invention can be used for automatically controlling the speed of the electric car when the gear is shifted, the car is prevented from sliding forth and back, sufficient reacting time for a driver to correct false operation behaviors is given, and the driving safety of the car is improved.

The invention discloses a method for controlling a power-assisted motor of an electrical power-assisted steering system under the intervention of active steering, and belongs to the field of the control of power-assisted motors of electrical power-assisted steering systems having the active steering function. The method comprises the following steps of: calculating a required feedforward power-assisted amending control current signal deta Ia by utilizing a feedforward power-assisted amending control module (7) according to an additional intersection angle theta ac and a feedforward transfer function G deta I(s), performing linear superposition of the amending control current signal deta Ia and the conventional power-assisted control current signal Ia to obtain a power-assisted motor totalcontrol current signal for controlling the power-assisted motor to exert power-assisted moment Ta, wherein the power-assisted moment Ta and steering wheel torque Td exerted by drivers overcome steering resisting moment TR commonly, and driving a wheel to complete steering by a steering transmission mechanism (10). By the method, the problem that the control moment of a steering wheel is changed suddenly with the intervention of the active steering additional intersection angle under high-speed running is solved, the steering road feel of the steering system under the intervention of the active steering is improved, and the requirement for safe driving during the high-speed running is met.

The invention discloses a firefighting system for a lithium system power battery. The firefighting system comprises a fire extinguishing pipe, a pressure sensor and a fire extinguishing medium. The pressure sensor is arranged at one end of the fire extinguishing pipe and is used for detecting pressure in the fire extinguishing pipe. The fire extinguishing medium is arranged in the fire extinguishing pipe. When the pipe body temperature of any position of the fire extinguishing pipe is higher than the first preset temperature, the corresponding position of the pipe body is molten to form a nozzle used for releasing the fire extinguishing medium. When the pressure sensor detects that the pressure in the fire extinguishing pipe is lower than the preset pressure, a firefighting system abnormalsignal is sent to a vehicle-mounted battery management system. The firefighting system for the lithium system power battery is lighter, more intelligent and more efficient.

The invention provides a method for perspective perception of intelligent vehicle front road environment on the basis of V2V. The method comprises the following steps of: obtaining a front vehicle and a rear vehicle running on a road, and establishing connection between the front vehicle and the rear vehicle through a cooperative communication protocol; obtaining front video data of the front vehicle by the rear vehicle so as to establish a front vehicle video image; detecting a road target in real time by the rear vehicle and obtaining a positioning parameter of the detected road target; establishing a rear vehicle video image by the rear vehicle according to front video data of the rear vehicle by utilizing a time label, and synchronizing the front vehicle video image and the rear vehicle video image; extracting SIFT feature points in the front vehicle video image and the rear vehicle video image by the rear vehicle by adoption of an SIFT algorithm, and obtaining matching points; establishing a 3D perspective model; carrying out optimal screening on the matching points; calculating an affine transformation parameter; and fusing the road target in the front vehicle video image into the rear vehicle video image by the rear vehicle so as to obtain an image for carrying out perspective perception of the front road by the rear vehicle. According to the method, the road environment perception ability of vehicles can be effectively strengthened.

A road cone recovery device for a traffic cone automatic retractable vehicle, including a clamp, the clamp includes a left outer splint, a right inner splint, a left inner splint, an inner splint wall, a hinge, a hydraulic cylinder, a microwave radar sensor, and the clamp and The first mandrel is connected with the U-shaped connecting arm, the U-shaped connecting arm is connected with the hydraulic telescopic arm, the hydraulic telescopic arm is connected with the second mandrel, and the gear surface at the end of the second mandrel is in contact with the gear surface of the stepping motor. When working, the microwave radar sensor senses the position of the traffic cone, the clamp fixes the traffic cone, the hydraulic telescopic arm shrinks to lift the traffic cone fixed by the clamp connected to the U-shaped connecting arm, and the stepping motor drives the hydraulic telescopic arm connected to the second mandrel to rotate , Transport the traffic cone to the designated location, the whole process does not require manual participation. A plurality of devices of the present invention are arranged outside the traffic cone automatic retractable vehicle to recover the traffic cones and improve work efficiency.

The invention relates to a blind area multi-picture video group display system for a commercial vehicle. The blind area multi-picture video group display system for the commercial vehicle comprises aninput unit, an application processor and an output unit, wherein the application processor is electrically connected with the input unit, and the output unit is electrically connected with the application processor; the input unit comprises a blind area camera module and a video switching logic controller, wherein the blind area camera module is used for shooting the surroundings of the vehicle and an input end of the video switching logic controller is electrically connected with an output end of the blind area camera module; the blind area camera module comprises a front n-shaped shooting system and a rear U-shaped camera system; the output unit comprises a display screen used for split-screen display or single screen display of shooting information of the blind area camera module; andthe display screen is electrically connected with the application processor. The blind area multi-picture video group display system for the commercial vehicle has the advantages of reasonable design,compact structure and convenient use.

The invention relates to a blind area intelligent auxiliary vehicle-mounted system applied to a commercial vehicle. The blind area intelligent auxiliary vehicle-mounted system applied to the commercial vehicle comprises four or more than five blind area camera modules mounted on the external side of the vehicle and used for shooting the surroundings of the vehicle; the blind area camera modules are one of the following two combinations; one combination is that the blind area camera modules comprise a right front camera and a rear U-shaped shooting system, wherein the right front camera is mounted on the external side of the right rear part of the vehicle and used for shooting the right front blind area D of the vehicle; the rear U-shaped shooting system comprises a left rear camera, a right rear camera and a rear middle camera, wherein the left rear camera is mounted on a left rear-view mirror and used for shooting the left rear blind area G of the vehicle, the right rear camera is mounted on a right rear-view mirror and used for shooting the left area blind area J of the vehicle, and the rear middle camera is arranged in the center of the rear part of the vehicle and used for shooting the rear blind area F of the vehicle. The blind area intelligent auxiliary vehicle-mounted system applied to the commercial vehicle has the advantages of reasonable design, compact structure andconvenient use.

The invention relates to a method for realizing combined display of multi-picture video in the blind area of ​​a commercial vehicle, which is implemented by means of a display screen, a blind area camera module, a video switching logic controller, an application processor, and a surround view camera module respectively installed on the vehicle ;The blind spot camera module includes a front left camera, a front right camera, a rear center camera, a front center camera, a rear left camera, and a rear right camera for respectively taking pictures of the corresponding viewing angle directions; including step 1, first, install the surround view on the car Camera module, then, according to the car model and the blind spot of looking around the camera module, adjust the angle of view of each camera in the blind area camera module, the blind area formed by the angle of view of each camera is covered by the blind area of ​​looking around; the present invention is reasonable in design, compact in structure and Easy to use.

A warning method of deceleration for motor-driven vehicle includes such steps as using rotation speed or acceleration sensor to measure the speed of vehicle, comparing it with zero, inputting the negative resultant to controller, processing data, inputting the data to amplifier, amplifying, driving switch element, and controlling sound and light warning devices for generating sound and light warning. Its warning back lamp is composed of mxn LEDs.

The invention discloses a vehicle running monitoring and management method which includes the steps: acquiring primary early warning for reminding a vehicle driver; judging whether upgrading of earlywarning is needed or not based on primary early warning information; executing upgraded early warning when judging that early warning needs to be updated in the step of early warning upgrading judgment. The invention further discloses a vehicle running monitoring and management device and system.

Passive air suspension systems are commonly used at present. Because the air springs of the passive air suspensions have stiffness defects and matching between the standard series of air bag stiffness and the vehicle parameters is unreasonable and can not be adjusted in a personalized manner, the vehicles adopting the passive air suspensions sway more seriously during running so that the passengers and the drivers often feel dizzy and uncomfortable, thus seriously affecting the comfortableness of the passengers and the safe driving of the drivers. The phenomenon has become the main reason for the problem that the popularization and application of the passive air suspensions in the passenger cars are seriously affected. The invention provides a limiting buffer and capacity composite air spring capable of adjusting static stiffness. The air spring has the following beneficial effects that: the static stiffness of the air spring is simple, convenient and practicable to adjust; the air spring is simple in structure and low in cost; and the dynamic stiffness of the air spring can be effectively improved by a buffer air chamber and a buffer orifice plug before an air bag is compressed to the limited block of a vehicle body, thus reducing impact of dynamic load on the vehicle body.

The invention discloses a picture synthesis calibration method, and relates to the field of automobiles. The picture synthesis calibration method achieves safe driving of the automobiles. The picture synthesis calibration method comprises the steps that a first point coordinate of any one point is obtained and recorded while a rearview mirror camera is unfolded; a relation between the first point coordinate and an identical world point coordinate is built and recorded; a relation between a pixel value and the first point coordinate of the same point in a first distortion picture is obtained through an internal parameter model and recorded; a relation between the pixel value and the world point coordinate of the same point in the first distortion picture is obtained and recorded; a second point coordinate of any one point is obtained and recorded while the camera is folded; a relation between the second point coordinate and the first point coordinate of the same point is built and recorded; a relation between the pixel value and the second point coordinate of the same point in a second distortion picture is obtained through the internal parameter model and recorded; a relation between the pixel value and the world point coordinate of the same point in the second distortion picture is obtained and recorded. The picture synthesis calibration method is applied to an automobile safety system.

The invention discloses a cushioning device for closing an automobile clutch, which comprises a cylinder sleeve, a piston, a connecting rod, a one-way air escape valve, an adjusting lever and the like and is characterized in that: a dovetail groove is formed on an inner wall of the piston; an air escape hole is reserved on the piston; a one-way valve is arranged in the hole; one end of the connecting rod is connected with the piston during arrangement, and the other end of the connecting rod protrudes out of a cylinder cover and is movably connected with a pedal operating lever of the clutch; the other end of the cylinder sleeve is connected with the adjusting lever; and the other end of the adjusting lever is movably connected to a vehicle frame. During operation, when a pedal of the clutch is stepped on for a gear change, the clutch can be released immediately without needing a skill developed by strict training to release an action of closing the pedal of the clutch which is completed by the cushioning device. The device avoids the vibration of a vehicle body, even power cutoff, caused by the instant severe overload of an engine due to fast release of the clutch, and improves the safe driving performance of a vehicle.

The invention discloses a control system and method preventing a mistaken condition between an accelerator pedal and a brake pedal; the system arranges a preposition radar sensor and a postposition radar sensor respectively on a vehicle head and tail; a drive axle of the vehicle is provided with a rotary speed sensor; a clutch of the vehicle is provided with a clutch actuator; a vehicle control panel is provided with a sound alarm; a signal input end of a central controller is respectively connected with the preposition radar sensor, the postposition radar sensor, an accelerator pedal position sensor, a brake pedal position sensor and the rotary speed sensor; a signal output end of the central controller is respectively connected with the clutch actuator and the sound alarm. The control system and method can do early warning for the driver and help the driver to brake, can effectively prevent the driver from mistaking the accelerator pedal with the brake pedal, and thus causing traffic accident; the control system and method can improve safe driving performance of the vehicle.

The invention relates to an intelligent auxiliary control method applied to the blind area of ​​a passenger car, a display screen, a blind area camera module, a video switching logic controller, and an application processor implemented by means of split screens respectively installed on the automobile; comprising the following steps: 1. First, install the surround view camera module on the car, and then adjust the angle of view of each camera in the blind area camera module according to the car model and the surround view blind area of ​​the surround view camera module, so that the blind area formed by the angle of view of each camera is covered by the surround view blind area ; Step 2, at first, according to the vehicle action signal first through the trigger signal interface input signal to the video switching logic controller, the video switching logic controller then sets the control scheme of each camera in the blind spot camera module in the driving of the car according to the signal; Then, the application processor plays the camera content displayed by the control scheme on a single screen or in split screens in real time on the display screen; the invention has reasonable design, compact structure and convenient use.

The invention provides a control method for motor fault treatment of a dual-motor power divided-flow type hybrid electric vehicle. The control method for motor fault treatment of the dual-motor powerdivided-flow type hybrid electric vehicle comprises the steps that firstly, the output torque gradient of a fault motor is controlled to reduce to 0, the rotating speed of the fault motor is controlled by adjusting the rotating speed of an engine, and until an absolute value of the rotating speed of the fault motor is less than a presser value A; then a brake connected with the fault motor is locked, so that the rotating speed of the fault motor is enabled to be 0, and a whole vehicle controller controls and adjusts another normal motor and the engine to realize while vehicle torque output; and when the rotating speed of the engine is less than or equal to a critical threshold value B of the rotating speed of the engine, the engine is controlled to stop oil injection and ignition, the another normal motor is controlled to realize the whole torque output and reversed towing speed adjustment of the engine, if power battery capacity is less than or equal to an SOC lower limiting value C,the whole output torque is eliminated, and the vehicle stops gradually. The control method for motor fault treatment of the dual-motor power divided-flow type hybrid electric vehicle is simple and feasible, and can improve safety of vehicle driving.

The invention relates to a tyre anti-skid device which comprises a conical gear and a plurality of helical gears and is characterized by further comprising a fixed disk, a positioning disk and a plurality of sets telescopic arm equipment, wherein a plurality of supporting plates are installed around the front side end of the fixed disk at a certain equal distance interval, a bearing seat is installed on the front middle part of the fixed disk, an integrally formed sleeve pipe is arranged at the rear end of a middle opening of the conical large gear, the rear end of the sleeve pipe is longitudinally distributed, an inner ring of the bearing on the front middle part of the fixed disk sleeves the rear end of the sleeve pipe, and the helical gears are annularly distributed at the side end of the conical large gear; and the rear ends of the telescopic arm equipment are installed at the front ends of the helical gears correspondingly, an internal thread pipe is installed on the inner side ofthe bearing seat located on the front middle part of the fixed disk, the rear end of the fixed disk is installed in the internal thread pipe, and the fixed disk is installed at the middle of the inner side of a vehicle hub. When a vehicle of the tyre anti-skid device travels, the pointed cone part of the outermost end of a rectangular movable rod can be effectively inserted in the surface of snowor ice, vehicle tyres are prevented from skidding during traveling, and therefore safe running of the vehicle on the snow-covered and ice-covered ground is effectively improved.

The invention discloses an automobile blind area video streaming media safety auxiliary device. The automobile blind area video streaming media safety auxiliary device comprises a shell. The shell isprovided with a control chip used for writing-in of a regulation and control program, a video input port used for accessing video information of the exterior of an automobile, a control signal input port used for accessing an automobile manipulation signal sent out by a driver, and a video output port used for outputting transferred video information. The automobile blind area video streaming media safety auxiliary device is mounted on an automobile and can effectively assist the driver to observe the road condition within the range of an automobile blind area, so that the safe driving property of the automobile is improved.

The invention relates to a rail damper with a built-in bottom plate and a design method thereof, the damper comprises a bottom plate, a roof, a rubber layer, and an elastic clasp of a rail pressed together with the roof, the damper is characterized in that the bottom plate is placed in the roof and is in vulcanization connection with the roof through a rubber layer. The vulcanized joint surfaces of the bottom plate and roof are both inclined planes, and the bottom plate is provided with anchoring mounting holes for being fixedly connected with a sleeper. The bottom plate is arranged in the roof, and the installation position of the rail damper is designed in the inner part of the product to reduce the requirement for the installation size of the sleeper, which is suitable for the connection of a small sleeper and a rail damper, thus improving the transverse stiffness of the rail damper. The rigidity of the rail damper can be adjusted, the probability of permanent deformation of the rubber layer can be reduced, the reliability of use of the rail damper is improved, the vulcanization molding is simpler, the requirements of mold, technology and equipment are lower, and the transverserestraint performance of the rail damper is improved. The safe driving performance of small curve radius sections is improved.

A bicycle with a lane deviation warning function comprises a bicycle frame (1) and a bicycle handle (2) and is characterized in that an installation seat (3) is fixed to the middle of the bicycle frame (1); photoelectric sensors (4) are installed on the left side and the right side of the installation seat (3) correspondingly; an angle sensor (5) is installed at a rotating bearing position of the bicycle handle (2); the photoelectric sensors (4) and the angle sensor (5) are connected with the input end of a processor (7); a GPS positioning module (6) is connected with the input end of the processor (7) through a cable; and the output end of the processor (7) is connected with a display screen (8). According to the bicycle with the lane deviation warning function, the positions of lane lines are judged through the photoelectric sensors; whether the driving direction is correct or not is judged by combining the angle sensor with the GPS positioning module; after processing and analyzing are conducted through the processor, the azimuth information can be displayed on the display screen; a cyclist is beneficially warned to ride according to a specified road; and the safe riding performance is improved.

The invention discloses a driving safety protection device of an underground trackless auxiliary transport vehicle. A pneumatic control reversing valve is additionally arranged in a vehicle braking system, so that an actuating mechanism can be operated only when the vehicle is in a braking state, and the actuating mechanism does not act even if an operating button is touched accidentally in the driving process. Meanwhile, in order to prevent a driver from engaging a gear to drive the vehicle under the condition that the vehicle door is not closed, a corresponding protection device is additionally arranged in a gear engaging loop, and a door locking valve is triggered to act only after a cab door is closed, so that the gear engaging loop is controlled to take effect, and gear engaging driving is achieved. After the set of driving safety protection device is additionally arranged on the underground trackless auxiliary transport vehicle, the safety driving performance of the vehicle can be effectively improved. The driving safety protection device plays an important role in reducing vehicle operation accidents, and has positive significance in guaranteeing the personal safety of underground operating personnel.

A passive air suspension system is commonly used in the prior art; due to the rigidity characteristics and the defects of the air spring of a passive air suspension, the unreasonableness of the matching between the rigidity of standard series of airbags and the parameters of a whole vehicle and the failure of personalized regulation, the vehicle which adopts the passive air suspension quite seriously swings laterally, so that a passenger and a driver are dizzy and uncomfortable, and the promotion and the application of the passive air suspension are badly affected. The invention relates to an air spring for limit buffer, pressure limit impact reduction and static rigidity adjustment with volume, the static rigidity adjustment of the air spring is simple and convenient and feasible, the structure is simple and the cost is low. A buffer air chamber and a buffer throttle plug can effectively improve the dynamic rigidity of the air spring before an airbag is compressed to be in front of a vehicle body limit block, so that the impact of dynamic load on the vehicle body is reduced. The air spring can also automatically reduce the dynamic rigidity of the vehicle when the vehicle runs and hits a bulge on a road surface, so that the impact of the bulge on the road surface on the vehicle body can be reduced, and the smoothness and the comfort of the vehicle are improved.

Disclosed is a bicycle lane locating traveling bicycle. The bicycle comprises a bicycle frame (1) and a handlebar (2) and is characterized in that an installation seat (3) is fixed to the middle of the bicycle frame (1); photoelectric sensors (4) are installed on the left side and the right side of the installation seat (3) correspondingly; an angle sensor (5) is installed on a rotary bearing of the handlebar (2); the photoelectric sensors (4) and the angle sensor (5) are connected with the input end of a processor (7); and the probe ends of the photoelectric sensors (4) are arranged downwards corresponding to a lane line, and probes of the photoelectric sensors (4) are inclined towards the outer side. According to the bicycle, the position of the lane line is judged by the photoelectric sensors, whether the traveling direction is correct is judged through the combination of the angle sensor and a GPS locating module, azimuth information can be displayed on a display screen after processing analysis of the processor, the bicycle can travel in a bicycle lane in a locating mode, and thus the safe traveling performance of the bicycle is improved.

The invention discloses an ear canal recognition based automobile intelligent starting method and system. The method includes the following steps: step 1, obtaining the ear canal information of a user; step 2, utilizing the received ear canal information and prestored ear canal information to perform contrast, and performing first time identity authentication on the user; step 3, judging whether arefrigeration mode or a heating mode of a vehicle air-conditioner is started according to the air temperature at the internal of a vehicle if the first time identity authentication is succeeded; step4, utilizing the real-time positioning information of an automobile and the user to calculate a relative distance, opening a vehicle door when the relative distance is less than a preset vehicle dooropening distance, and otherwise, repeating the step 4; and step 5, performing second time identity authentication on a person in a driving position when the person is detected to sit at the driving position, unlocking an automobile starting module if the second time identity authentication is succeeded, otherwise, triggering an automobile alarm system, and quitting an automobile intelligent starting flow. The method and system are fast in identity identification of the user and high in accuracy, so that the automobile can be more intelligent and safer.

The invention discloses a steering hinge device for an extra-heavy type vibratory roller. The steering hinge device comprises a rear hinged frame, a bearing, a hinge pin and a front hinged frame; the rear hinged frame is hinged to the front hinged frame through the hinge pin, the bearing is connected between the hinge pin and the front hinged frame in a sleeved mode, and the rear hinged frame comprises an outer support rod and an inner support rod; the device further comprises a sliding sleeve and multiple lock nuts, the upper end face of the bearing is connected with the lower end face of the outer support rod, the sliding sleeve is connected between the lower end of the hinge pin and the inner support rod in a sleeved mode, the lock nuts are installed on the hinge pin at the lower end of the sliding sleeve, the lock nuts are screwed to push the sliding sleeve to move upwards, and the hinge pin, the outer support rod, the bearing and the sliding sleeve are driven to be closely connected in sequence to control the hinge pin to be locked on the rear hinged frame. The steering hinge device for the extra-heavy type vibratory roller is simple in structure, convenient to install and disassemble and capable of effectively eliminating axial clearances among the hinge pin, the rear hinged frame, the bearing and the front hinged frame, hole or shaft abrasion caused by relative rotation between the hinge pin and the rear hinged frame is eliminated, and the steering stability of the whole machine, the whole machine workability and safe drivability are guaranteed.

Disclosed is a bicycle with a locating system. The bicycle comprises a bicycle frame (1) and a handlebar (2) and is characterized in that an installation seat (3) is fixed to the middle of the bicycle frame (1); photoelectric sensors (4) are installed on the left side and the right side of the installation seat (3) correspondingly; an angle sensor (5) is installed on a rotary bearing of the handlebar (2); the photoelectric sensors (4) and the angle sensor (5) are connected with the input end of a processor (7); a GPS locating module (6) is connected with the input end of the processor (7) through a cable; and the output end of the processor (7) is connected with a display screen (8). According to the bicycle, the position of a lane line is judged by the photoelectric sensors, whether the traveling direction is correct is judged through the combination of the angle sensor and the GPS locating module, azimuth information can be displayed on the display screen after processing analysis of the processor, a bicycle rider can be reminded of traveling according to a specified road, and thus the safe traveling performance of the bicycle is improved.

The invention discloses a safety evaluation method for a steep slope and a bending road, and is used for solving the technical problem that the random error and accumulated error are bigger and the road slope can't be measured when data is lost in the existing road slope measurement, and belongs to the field of road safety. The safety evaluation method for the steep slope and the bending road carries out section description and piecewise fitting for tested road sections according to the vehicle-mounted global position system (GPS) measurement information, combines inertial measurement unit (IMU) measurement information to carry out spline interpolation and smoothing processing for road sections with less GPS measurement records when the GPS records are insufficient to carry out the smooth processing or GPS records are lost as drivers drive in the cave, then get the fitting curved surface equation of the roads so as to calculate the turning radius and the slope of the roads. The safety evaluation method for the steep slope and the bending road then moves the roads ahead hop by hop by using recursive estimation, eliminates the influence of cumulative errors in measurement through the limited memory method, improves the calculation precision of geometrical parameters such as the road slope and the curvature, solves the technical problem that the existing roads are difficult to measure, provides the basis for the traffic management department to carry out road surface monitoring and acceptance inspection, and meanwhile proposes load and speed requirements for the safety traffic on the road section.