994 results about "Emergency brake" patented technology

The invention discloses an intelligent control method and system for motorcycle calipers. According to the method, multi-modal data such as vehicle speed, wheel speed, piston displacement, brake disc temperature, inclination angle and transverse acceleration are collected in real time through a multi-source sensor and are preprocessed; calculating a braking demand and an adhesion coefficient according to the data, and recognizing a straight line, a curve or an emergency braking scene in combination with the inclination angle and the transverse acceleration; inputting the data into a pre-trained brake control machine learning model to generate a target brake force change curve; controlling the driving motor and the calipers to brake based on the curve, and regularly optimizing the model according to brake feedback and historical data; predicting a braking efficiency attenuation trend by combining a part degradation model, and compensating the braking force to update the model; the motor current is adjusted in real time through closed-loop control so as to follow the target braking force; and continuously monitoring the temperature of the brake disc, and triggering thermal attenuation compensation when the temperature exceeds a threshold value. According to the invention, self-adaptive, accurate and reliable intelligent braking of the motorcycle is realized.

The invention relates to an automatic emergency braking threshold value adjusting method and system based on in-cabin multi-mode information, and relates to the technical field of auxiliary driving, the method comprises the steps that visual information and audio information of a driver and at least one passenger in a cabin are obtained, the visual information comprises facial expressions and head postures, and the audio information comprises audio information of the driver and the at least one passenger; the audio information comprises voice features and non-voice sounds; respectively calculating a driver state coefficient and a passenger state coefficient based on the visual information and the audio information; fusing the driver state coefficient and the passenger state coefficient to obtain an in-cabin safety situation coefficient; and according to the in-cabin safety situation coefficient, a triggering threshold value of the automatic emergency braking system is adjusted in a self-adaptive mode. According to the method, multi-modal information such as vision and audio in the cabin is fused, and state analysis of all passengers is combined, so that intelligent self-adaptive adjustment of the AEB braking threshold value can be realized, and the sensing accuracy and decision reliability of an emergency braking system in a complex scene are improved.

The invention relates to a vehicle active safety control method and system, a storage medium and a vehicle, and belongs to the field of intelligent driving control. The vehicle active safety control method comprises the steps that driving state information is obtained in real time; calculating a longitudinal risk avoidance determination threshold based on the driving state information, and setting a first trigger condition based on the longitudinal risk avoidance determination threshold; if the longitudinal distance between the vehicle and the target vehicle meets the first triggering condition, an automatic emergency braking system is activated, and a first deceleration used for controlling longitudinal braking of the vehicle is generated; after the automatic emergency braking system is activated, a transverse risk avoiding judgment threshold value is calculated on the basis of the driving state information updated in real time, and a second triggering condition is set on the basis of the transverse risk avoiding judgment threshold value; if the longitudinal distance between the vehicle and the target vehicle meets a second triggering condition, an automatic emergency steering system is activated, and a second control instruction is generated; wherein the second control instruction is used for controlling the automatic emergency steering system to execute the cooperative steering angle and controlling the automatic emergency braking system to execute third deceleration cooperating with the cooperative steering angle.

The invention discloses an axle staged cooling system, an axle staged cooling assembly and an engineering vehicle. The axle staged cooling system comprises an engine first-stage cooling system, an engine second-stage cooling system, an axle first-stage cooling system and an axle second-stage cooling system. Each stage of cooling system controls cooling water and oil path trend through a thermolator in each loop, controls axle cooling oil and engine cooling water to exchange heat, and meets different cooling requirements of an axle. The temperature sensor in each loop outputs water and oil temperature signals to a motor of the cooling fan, so that the rotating speed of the fan is increased to different degrees along with the temperature rise of each cooling system, and different cooling powers are matched. According to the grading system, the engine and the axles can work at the proper temperature at the same time, the two heat exchangers cool cooling oil of the front axle, cooling oil of the middle axle and cooling oil of the rear axle respectively, the cooling capacity of the front axle is improved, the braking effectiveness of the front axle is guaranteed, and rollover caused by serious backward movement of the gravity center of a vehicle during emergency braking is prevented.

The invention relates to the technical field of AMT gearbox control, in particular to an AMT gearbox control method, system and equipment in a braking state and a medium, and the method comprises the steps that when a vehicle is in a braking deceleration state, the stepping duration of a brake pedal, the actual vehicle speed, the actual acceleration of the vehicle and the rotating speed of an engine are obtained; whether the braking intention of the driver is emergency braking or stable braking is judged based on the stepping duration of the brake pedal and the actual acceleration of the vehicle; and based on the braking intention, the gear of the AMT gearbox and the separation state of a clutch are controlled till braking is finished. Wherein the current gear is maintained during emergency braking, and a clutch is controlled to be separated according to an engine rotating speed threshold value; during stable braking, after the rotating speed of the engine meets the condition, whether downshift is conducted or not is judged according to the actual vehicle speed, and a clutch is controlled to be separated. The brake intention of a driver can be accurately recognized, differential control is executed, and therefore the brake efficiency is effectively improved, engine flameout is prevented, and the driving smoothness is improved.

The invention relates to the technical field of vehicles, and discloses a vehicle-mounted image generation device, a vehicle machine system and a vehicle. The method comprises the following steps: at least acquiring first point cloud data and first image data through a data fusion module, and converting the two data into a bird's-eye view feature map through a preset conversion algorithm; performing semantic analysis on the user voice through a preset semantic analysis model by using a voice analysis module; generating a vehicle-mounted application image at least applied to head-up display and / or screen display according to the bird's-eye view feature map and the semantic analysis result by using an image generation engine through a preset compression model; and terminating the generation process of the vehicle-mounted application image in a preset time period after the automatic emergency braking signal is received through the emergency interruption module, and at least applying the graphic processing computing power of the generation process to a vehicle collision avoidance decision. Therefore, the problem that in an existing vehicle-mounted image generation technology, due to the fact that the computing power is too large, vehicle decision making is not timely under the emergency situation can be solved, and the driving safety of a user can be guaranteed.

The invention discloses an automatic emergency braking system and method based on a graph neural network and retrieval enhancement generation. Comprises: a dangerous scene map construction module for extracting target spatial-temporal characteristics based on an accident video, marking on a high-precision map, and constructing a dangerous scene map; the GNN encoding module encodes the dangerous scene into an embedded vector and stores the embedded vector in a cloud vector database; the real-time positioning and retrieval module is used for calculating a retrieval radius and indexing and downloading nearby scene subsets; the real-time sensing module is used for generating a structured sensing data frame through time-space synchronization and multi-sensor fusion; the real-time GNN coding and similarity matching module is used for carrying out similarity matching on the coded current scene and the subset and calculating a safety evaluation coefficient; and the decision optimization module is used for triggering the active intervention strategy according to the priority based on the safety evaluation coefficient. According to the method, advanced perception and active avoidance of potential risks are realized by retrieving historical dangerous scene experience, and the driving safety in a complex scene is remarkably improved.

The invention relates to the technical field of control system data processing, in particular to a ship intelligent workshop crane hoisting path planning method, which comprises the following steps: collecting crane coordinates, obstacle distribution, load swing angle and material weight, and inputting a physical constraint model to generate a structured environment state data set; initializing wolf pack algorithm parameters based on the structured environment state data set, calculating a compressed detection wolf walking step length according to an obstacle distance, generating a global task queue by an industrial cloud platform according to a dynamic parameter set, and outputting an execution state data set by a crane end; counting emergency braking times from an execution state data set to optimize a walk step length function, comparing task time to optimize a wolf investigation proportion, analyzing historical swing data to establish a step length and swing mapping library, and optimizing a parameter set to feed back and update a physical constraint model. According to the invention, cooperation of environment perception, dynamic path planning and closed-loop verification is realized, and accident risks and production delay in a ship workshop narrow space dynamic obstacle scene are reduced.

The embodiment of the invention relates to the technical field of vehicle intelligent control, and discloses a vehicle remote control parking system, a control method and equipment, and the system comprises an intelligent driving domain control SOC and an intelligent driving domain control MCU which are in communication connection; the intelligent driving domain control MCU is provided with an ultrasonic algorithm module, a CAN signal processing module, a first remote control parking module, an arbitration module and a vehicle control module. The first remote control parking module arranged in the intelligent driving domain control MCU can independently receive obstacle distance data of the ultrasonic algorithm module and vehicle state signals of the CAN signal processing module, a basic parking track is rapidly generated, waiting for starting of the intelligent driving domain control SOC is not needed, the waiting time of the system is shortened, and the parking efficiency is improved. The basic parking track is strictly verified through the arranged arbitration module, the execution of unsafe tracks exceeding a threshold value is refused, and when the arbitration module judges that the collision risk exists according to the obstacle distance data, the emergency braking instruction is immediately triggered, collision is avoided, and the automobile function safety standard is met.

A fail-safe control method of an electromechanical brake apparatus comprising a plurality of wheel controllers, a main controller, and an auxiliary controller that control electromechanical brakes disposed on each wheel of a vehicle, the method comprising: deciding a self-status of each of the plurality of wheel controllers, the main controller, and the auxiliary controller based on pre-classified status information; sharing self-status decided by each of the plurality of wheel controllers, the main controller, and the auxiliary controller; determining a status of one another based on the shared self-status among the plurality of wheel controllers, the main controller, and the auxiliary controller; activating a pre-designated fail-safe mode based on status information of each of the plurality of wheel controllers, the main controller, and the auxiliary controller; and performing emergency braking of the vehicle based on the pre-designated fail-safe mode or maintaining the vehicle in a drivable status.

A leg exercise device with emergency braking has a rack and a moving mechanism. The rack is equipped with guide rails, and the moving mechanism is slidable back and forth along the guide rails. The moving mechanism comprises a sliding seat, which is slidably connected to the guide rails and is slidable along the guide rails. The rack is further provided with a braking mechanism located on one side of the sliding seat. The braking mechanism comprises a braking component that is movable towards the sliding seat, and the braking component extends along the sliding direction of the sliding seat.

A trailer control box may receive a wireless message from a controller of the tractor. The trailer control box may validate and authenticating the message. The trailer control box may control an emergency-brake valve based on the message when the message is an emergency-brake command. The trailer control box may control a service-brake valve based on the message when the message is a service-brake command. The trailer control box may control at least one switch to operate trailer lights based on the message when the message is a light command. In certain embodiments, autonomous-capable socket is mounted to a trailer and includes: a chamfered outer casing, a plurality of electrical connectors, a service-brake air aperture, and an emergency-brake air aperture. The autonomous-capable socket required a single autonomous connection by an autonomous tractor.

The invention discloses a crane working path planning method and system and application thereof. The method comprises the following steps: 1) constructing a crane operation demonstration database; 2) pre-training a convolutional neural network by using a demonstration database, and extracting a mapping relation between environment features and tracks; 3) inputting the current starting point position, the target point position and the environment information obtained by the laser radar into a path generation network, and outputting an initial action sequence of the rotation degree of freedom, the dolly motion degree of freedom and the hook degree of freedom; 4) performing local re-planning on the initial action sequence by adopting a fast random tree algorithm based on physical constraint, wherein the optimization criterion is the weighted sum minimization of the path length, the load swing angle and the action sequence variation; and (5) the crane is controlled to move according to the optimized action sequence, the load swing angle is monitored in real time, and emergency braking is triggered when the swing angle exceeds a threshold value. By means of the method, efficient and safe operation of the crane in the complex environment can be achieved, and good engineering practicability and popularization value are achieved.

A method and system for providing maximum trailer braking during a high pressure demand, such as during autonomous emergency braking (AEB), for tractor-trailers is provided. The system can include a brake controller of the trailer that uses only tractor anti-lock brake system (ABS) data from the tractor wheels, without using any trailer ABS information, to estimate the surface friction and generate a high or low pressure command to be sent to the trailer based on only the tractor ABS data. The estimation of surface friction may be accomplished using the ABS information from the tractor and the pressure being demanded to determine a percent reduction of pressure requested by the tractor that may be compared to a threshold percentage to differentiate between high and low mu surfaces in real time.

The invention relates to a configuration method, device and equipment of a train operation control system, a medium and a computer program product. The method comprises the following steps: starting a virtual marshalling test under the condition that the train control on-board equipment, the brake control unit, the log recording device and the satellite positioning module are all in a normal working state; obtaining at least one of departure positioning time data, general braking feedback time data, emergency braking feedback time data and idling and slipping data through a dynamic adjustment test; direction and handle acquisition fault time data are obtained through a static adjustment test, and general braking exhaust time data are obtained through combination of the static adjustment test and a dynamic adjustment test; and integrating test data obtained by the dynamic tuning test and / or the static tuning test and / or the combination of the static tuning test and the dynamic tuning test, and outputting virtual marshalling configuration data. By adopting the method, the key parameters in the train operation process can be dynamically obtained, the requirements of different virtual marshalling and different operation scenes are met, and the overall safety and reliability of the system are improved.

The invention provides a vehicle braking control method and system and electronic equipment, and relates to the field of vehicle braking control. According to the method, when a hydraulic braking system and a wheel speed sensor fail at the same time, vehicle state information can be obtained through an inertial sensor of a vehicle; and an accurate braking instruction is generated to control the parking brake to carry out emergency braking on the vehicle, so that the potential safety hazard that the parking brake cannot be controlled through an electronic hand brake to carry out emergency braking on the vehicle when a hydraulic braking system and a wheel speed sensor simultaneously fail in the prior art is solved.

A trailer control box may receive a wireless message from a controller of the tractor. The trailer control box may validate and authenticating the message. The trailer control box may control an emergency-brake valve based on the message when the message is an emergency-brake command. The trailer control box may control a service-brake valve based on the message when the message is a service-brake command. The trailer control box may control at least one switch to operate trailer lights based on the message when the message is a light command. In certain embodiments, autonomous-capable socket is mounted to a trailer and includes: a chamfered outer casing, a plurality of electrical connectors, a service-brake air aperture, and an emergency-brake air aperture. The autonomous-capable socket required a single autonomous connection by an autonomous tractor.

A vehicle control method, system and apparatus, and a vehicle. The method comprises: when it is determined that a vehicle travel stability function state is in an activated state, calculating a left rear motor target torque and a right rear motor target torque of a vehicle; and applying the left rear motor target torque and the right rear motor target torque to a left rear drive motor and a right rear drive motor of the vehicle, respectively, so as to control the travel stability of the vehicle. In the method, system and apparatus, and the vehicle, by applying the left rear motor target torque and the right rear motor target torque to the left rear wheel and the right rear wheel of the vehicle, respectively, a compensation yaw moment is generated, so that when the vehicle is in a state such as emergency braking, the control response is faster, the travel stability of the vehicle is better maintained, and the problem of deviation during traveling is solved.

The invention provides an AEB evaluation system based on a multi-modal signal, and relates to the technical field of automatic emergency braking systems, the system performs synchronous analysis and feature extraction on a CAN bus and image data through a data processing layer, and then establishes a unified feature space by using a cross-modal attention mechanism through a multi-modal fusion layer, and the AEB evaluation system is used for evaluating the AEB. Vehicle dynamic time sequence behaviors and scene visual semantic information are deeply integrated, and the robustness of environment understanding and event judgment is improved; the decision arbitration layer adopts a three-level judgment mechanism combining rule driving and model driving, the first level judges triggering and collision avoidance logic based on time sequence features, the second level evaluates the braking effect based on visual features, and the third level realizes fusion decision through confidence weighting and a conflict resolution strategy, so that the high accuracy of a result is ensured, and the reliability of the system is improved. Finally, an AEB effectiveness evaluation result with high automation level and high interpretability and a complete judgment basis are output, and the test efficiency and the evaluation reliability are improved.

Disclosed are techniques for selective and scalable sensor fusion for autonomous emergency braking (AEB). In an aspect, an AEB system on a vehicle dynamically selects one or more vehicle sensors from a plurality of vehicle sensors and / or dynamically scales an output from each of the dynamically selected one or more vehicle sensors based on one or more factors, such as the condition of the vehicle, weather, road, or traffic, a location of the vehicle, a sensor capability, a required sensing accuracy, etc., or a change of any of the above. The AEB system monitors a forward path of travel of the vehicle for potential collisions, based on data comprising the output from the one or more vehicle sensors. If a potential collision is detected, the AEB system autonomously applies vehicle brakes to avoid the potential collision. The AEB system can use data and location fingerprinting to reduce false positives.

The invention belongs to the technical field of automatic emergency braking systems, and provides an automatic emergency braking method and system based on dynamic environment assessment and application, and the method comprises the steps that when a vehicle is started, the automatic emergency braking system loads preset basic parameters; collecting multi-source sensing data in real time; carrying out quantitative scoring on the multi-source sensing data, and carrying out weighted fusion calculation to obtain a comprehensive environment risk score at the current moment; according to the comprehensive environment risk score, querying a mapping relation between the risk score and a sensitivity mode, determining a sensitivity mode which should be adopted currently, and selecting a grading trigger threshold value corresponding to the sensitivity mode; and collision risk judgment is carried out based on the selected grading triggering threshold value, and corresponding grading early warning and braking control are executed according to a judgment result. The method can ensure that the sensitivity of the automatic emergency braking system can be matched with the current environmental risk in real time, and is high in adaptability and safety.

The invention relates to a self-adaptive emergency braking method and system based on a multi-mode fusion intention and a medium, and relates to the technical field of intelligent driving, and the method comprises the steps: obtaining a traffic signal lamp state, a vehicle state, a front vehicle state and a front vehicle brake lamp state; judging the passing intention of the vehicle based on the state of the vehicle, and judging the passing intention of the front vehicle based on the state of the front vehicle and the stoplight state of the front vehicle; selecting a corresponding target automatic emergency braking mode from a predefined decision matrix according to the combination of the own vehicle passing intention and the preceding vehicle passing intention; and in the target automatic emergency braking mode, when the real-time collision risk parameter reaches a triggering threshold value corresponding to the mode, braking intervention is carried out according to a deceleration strategy corresponding to the mode. According to the invention, the false triggering rate of the automatic emergency braking system under the scene of traffic signal lamp switching at the urban intersection can be obviously reduced, and the accuracy of collision risk identification and the timeliness of system response are improved at the same time.

The invention provides a steering wheel touch navigation prompting system and method based on multi-source data. The method comprises the following steps: acquiring position data, environment perception data and vehicle state data of a vehicle; collecting state data of a driver; fusing the data acquired by the data acquisition module and the driver state monitoring module to obtain multi-source data; inputting the multi-source data into an LSTM-based tactile semantic generation model to obtain tactile instruction parameters corresponding to the multi-source data; and outputting tactile vibration of the steering wheel in various forms according to the tactile instruction parameters. According to the invention, the tactile response time and the emergency braking distance can be obviously reduced; the information transmission efficiency is improved through rich tactile semantics; and the self-learning parameter library of the AI large model is supported to more accurately match the personalized requirements of the user.

A method for controlling an electronic mechanical brake apparatus, the method comprising: sharing wheel speed information acquired from a plurality of wheel speed sensors by a plurality of wheel controllers using a first communication line and a second communication line, and determining whether it is possible to estimate a vehicle speed using the shared wheel speed information; In response to determining whether the vehicle speed can be estimated, generating an emergency braking force based on a change in the vehicle speed by the plurality of wheel controllers to brake the vehicle; In response to determining that the condition for estimating the vehicle speed is not satisfied, generating the emergency braking force based on the change in wheel speed by the plurality of wheel controllers to brake the vehicle.

This application discloses a fan control method, electronic device, storage medium, and program product, relating to the field of intelligent control technology. By adding a capacitance sensing unit to the protective mesh, the real-time capacitance value at the protective mesh is actively collected and compared with historical capacitance values. Combined with the control cycle, the capacitance change information is determined, thereby accurately judging the normal, dust warning, and emergency braking states of the fan and implementing corresponding control. This not only achieves active monitoring and intervention prevention of the fan protective mesh status with a simple and low-cost structural design, but also effectively avoids problems such as dust affecting heat dissipation and foreign objects causing safety accidents. Ultimately, it improves the safety and effectiveness of fan operation and the overall stability and reliability of the system in application scenarios such as servers.

The embodiment of the present specification provides a train control method and device for a signal system when a catenary is powered off, wherein the method comprises the following steps: in the case that the train catenary is powered off, obtaining the current catenary power supply state information of the train through the signal system; based on the catenary power supply state information, disconnecting the traction of the train through the signal system, outputting emergency braking parking, and after the train is parked stably, outputting holding braking. The embodiment of the present specification can be applied to all urban rail transit projects equipped with signal systems, has strong universality, and can improve the safety of train operation.

The invention discloses a differential steering wheel system with linear braking and speed changing functions, which can solve the problem that a traditional steering wheel cannot give consideration to both high speed and heavy load through speed changing and torque changing, and can realize emergency braking of the steering wheel through linear braking when the steering wheel is at a high speed. The torque of a driving motor of the differential steering wheel is shunted through a speed change mechanism, a synchronous belt mechanism and a differential mechanism, and is transmitted to driving wheels on two sides through a speed reducer; when the differential steering wheel needs to steer, the steering motor actively controls steering, the driving wheels on the two sides automatically distribute rotating speed and torque through the differential mechanism, and stable steering is achieved. When a dangerous situation is encountered, the differential steering wheel achieves emergency braking through linear braking with adjustable braking force. Under the working conditions of high speed and light load, the speed of the differential steering wheel can be adjusted to a high-speed gear through the speed change mechanism, so that the speed range of the differential steering wheel is widened; under the working conditions of low speed and heavy load, the speed of the differential steering wheel can be adjusted to a low-speed gear through the speed change mechanism, so that the driving torque of the differential steering wheel is enhanced, and the traction capacity of the differential steering wheel is improved.

The application discloses a truck cargo stability identification method based on an AEB system, obtains deceleration data by braking and decelerating under two conditions of tight cargo bundling and loose cargo of a test truck, and then draws deceleration curves under the two conditions, compares the two deceleration curves, finds out the change law of the deceleration curves, the deceleration frequency and the amplitude under the two conditions, and then compares the deceleration curve of the truck in the braking process in the transportation process with the deceleration curve obtained through the test to determine whether the cargo in the truck compartment in the transportation process is tightly bundled or loose. When the identified cargo of the truck is loose, the AEB system installed on the vehicle automatically reduces the deceleration of the vehicle to reduce the emergency braking intensity, so that the damage degree of the cargo is reduced and the driving safety of the truck is improved.

A brake system for a transportation vehicle having a brake device for braking a wheel of the transportation vehicle, an actuator device for targetedly actuating the brake device, a control device for controlling the actuator device, and an emergency brake device for braking the wheel in response to a malfunction of the transportation vehicle. The emergency brake device has an energy store for storing energy for actuating the brake device and a triggering device for releasing the stored energy in the energy store to actuate the brake device, the triggering device releases the energy store in response to a failure of an on-board electrical system of the transportation vehicle. Also disclosed is a method for operating a brake system and to a transportation vehicle having such a brake system.

The utility model relates to a forklift technical field discloses a forklift anti -collision device, including the vehicle body, the vehicle body left end is provided with two cargo fork, the cargo fork left end all is provided with the approach inductive switch, the cargo fork left end all is fixedly connected with two springs, the spring left end is fixedly connected with the anti -collision inductor, the cargo fork top is provided with the tray, the vehicle body left end is provided with two limit switches, the vehicle body left end corresponding limit switch upper side all hinge connection has the anti -collision board. In the utility model, the anti -collision inductor can induct the object inside 0 5m range before the cargo fork and carry out ranging, and the driver is reminded, when the vehicle body still collides to the front shielding object at a certain speed because of the unexpected situation, the anti -collision inductor will touch the approach inductive switch installed in the cargo fork, and the control system of vehicle body is sent to the electric signal from the approach inductive switch, and emergency brake is carried out immediately, avoids the forklift to continue to go on to the collision body and causes the harm continuously.