Pedestrian safety prompting method and system, vehicle, equipment, medium and product

Abstract

The invention discloses a pedestrian safety prompting method and system, a vehicle, equipment, a medium and a product, and relates to the technical field of public traffic safety, and the method comprises the steps: firstly detecting the operation parameters of a vehicle in front of or behind the vehicle and the motion parameters of pedestrians in front of or behind the vehicle; then determining whether the pedestrian is in a dangerous passing time period according to the vehicle operation parameters and the pedestrian motion parameters; when the pedestrians are in the dangerous passing time period, the pedestrians are prompted to be forbidden to pass, a set of real-time safety prompting mechanism is innovatively designed from the perspective of the pedestrians, accurate safety guidance for the pedestrians can be achieved through simple vehicle-mounted equipment, and therefore the implementation cost of the system is remarkably reduced, and the system is easy to popularize. The technical problem of how to reduce ghost probe type traffic accidents is solved.

Description

Technical Field

[0001] The present application relates to the field of public transportation safety technology, and in particular to pedestrian safety reminder methods, systems, vehicles, equipment, media and products. Background Art

[0002] With the acceleration of urbanization and the growth of motor vehicle ownership, urban road traffic safety issues are becoming increasingly prominent. Especially in urban streets or busy traffic areas, pedestrians and motor vehicles are prone to collisions due to the blind spots caused by parked vehicles on the roadside, commonly known as "ghost heads". Such traffic accidents caused by blocked vision not only increase the difficulty of traffic management, but also bring safety hazards to urban residents' daily travel.

[0003] At present, road traffic safety is mainly guaranteed by intelligent assisted driving systems. These systems collect real-time information about the surrounding environment by installing sensors such as cameras and radars on vehicles. When potential dangers are detected, the system will alert the driver to take deceleration or braking measures in time. Such systems mainly start from the driver's perspective and prevent accidents by improving the driver's ability to perceive the surrounding environment.

[0004] As urban population density increases, there is an increasing demand for pedestrians to cross the road in crowded places such as schools and commercial areas. In this context, existing intelligent assisted driving systems have limitations. On the one hand, the high cost of the system leads to a low penetration rate, and a large number of motor vehicles are still not equipped with relevant equipment; on the other hand, the system only focuses on the driver's perception needs and fails to provide timely and effective safety reminders for pedestrians in blind spots, resulting in a lack of necessary safety guidance for pedestrians when crossing the road. Summary of the invention

[0005] The main purpose of this application is to provide a pedestrian safety reminder method, system, vehicle, equipment, medium and product, aiming to solve the technical problem of how to reduce the occurrence of ghost-peek-type traffic accidents.

[0006] To achieve the above objectives, the present application proposes a pedestrian safety prompting method, the pedestrian safety prompting method comprising:

[0007] Detecting the running parameters of vehicles in front of or behind the vehicle and the movement parameters of pedestrians in front of or behind the vehicle;

[0008] Determining whether the pedestrian is in a dangerous passage period according to the vehicle operation parameters and the pedestrian movement parameters;

[0009] When the pedestrian is in a dangerous passage period, a prompt is given to the pedestrian that passage is prohibited.

[0010] In one embodiment, the step of detecting the running parameters of the vehicle in front of or behind the vehicle and the movement parameters of the pedestrian in front of or behind the vehicle specifically includes:

[0011] Detecting whether the ignition circuit is in a power-off state, and identifying and analyzing whether the vehicle is parked on the side of the road;

[0012] When the duration of the vehicle being in the power-off state is greater than the first preset duration and the vehicle is parked on the side of the road, a detection and collection module arranged on the vehicle body is used to monitor in real time whether there are oncoming vehicles or pedestrians within a preset range;

[0013] When there is an oncoming vehicle, detecting the speed and the first distance of the oncoming vehicle;

[0014] When pedestrians are present, pedestrian speed and road width are detected.

[0015] In one embodiment, the step of determining whether the pedestrian is in a dangerous passage period according to the vehicle operation parameters and the pedestrian movement parameters specifically includes:

[0016] Calculate the first time duration of the oncoming vehicle to reach the vehicle based on the oncoming vehicle speed and the first distance;

[0017] According to the pedestrian speed and the road width, the second time duration for the pedestrian to pass through the road is calculated;

[0018] When the first time duration is less than or equal to the second time duration, it is determined that this time is the dangerous passage period.

[0019] In one embodiment, when the pedestrian is in a dangerous passage period, the step of prompting the pedestrian to prohibit passage specifically includes:

[0020] When the pedestrian is in a dangerous passage period, a prompt module is used to issue a prohibition-from-passing prompt for a third time period, where the third time period is the sum of the first time period and the second preset time period.

[0021] In one embodiment, when the pedestrian is in a dangerous passage period, the step of prompting the pedestrian to prohibit passage comprises:

[0022] When the pedestrian is not in a dangerous passage period, a prompt module is used to give a prompt that the pedestrian can pass.

[0023] In addition, to achieve the above purpose, the present application also proposes a vehicle-mounted pedestrian safety prompt system, the vehicle-mounted pedestrian safety prompt system comprising: a detection and acquisition module, a calculation module and a prompt module;

[0024] The detection and acquisition module is connected to the calculation module, and the calculation module is connected to the prompt module;

[0025] The detection and acquisition module is used to detect the running parameters of vehicles in front of or behind the vehicle and the movement parameters of pedestrians in front of or behind the vehicle;

[0026] The calculation module is used to determine whether the pedestrian is in a dangerous passage period according to the vehicle operation parameters and the pedestrian movement parameters;

[0027] The prompt module is used to prompt the pedestrian that passage is prohibited when the pedestrian is in a dangerous passage period.

[0028] In addition, to achieve the above-mentioned purpose, the present application also proposes a vehicle, which includes an on-board pedestrian safety reminder system.

[0029] In addition, to achieve the above-mentioned purpose, the present application also proposes a pedestrian safety reminder device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the pedestrian safety reminder method described above.

[0030] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the pedestrian safety prompt method described above are implemented.

[0031] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the pedestrian safety prompt method as described above.

[0032] One or more technical solutions proposed in this application have at least the following technical effects:

[0033] This application uses on-board sensors to continuously monitor operating parameters such as the speed and distance of vehicles coming from the front or rear, and detects the movement status of pedestrians in front of or behind the vehicle. The system calculates and analyzes the acquired vehicle operation data (such as speed and distance) and pedestrian traffic parameters (such as road width and average walking speed) in real time to determine whether the current time period is suitable for pedestrians. When the system determines that it is in a dangerous traffic period, that is, when the arrival time of the oncoming vehicle is less than the time required for pedestrians to cross, it will immediately issue a clear warning to pedestrians that no passage is allowed, such as displaying a red indicator light, until the dangerous period ends.

[0034] In this application, a real-time safety reminder mechanism is innovatively designed from the perspective of pedestrians, and accurate safety guidance for pedestrians can be achieved through simple on-board equipment, so the system implementation cost is significantly reduced and easy to promote. It effectively solves the technical problems of low penetration rate of intelligent driving assistance equipment in the prior art and inability to provide intuitive safety guidance for pedestrians, thereby achieving timely and reliable safety protection for pedestrians in blind spots without relying on expensive equipment, effectively preventing traffic accidents caused by blocked vision, and improving the level of road traffic safety. It also has good social and economic benefits. It solves the technical problem of how to reduce the occurrence of ghost-heading traffic accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0037] Figure 1 A flowchart of the first embodiment of the pedestrian safety reminder method of the present application is provided;

[0038] Figure 2 A schematic diagram of a scenario provided for the first embodiment of the pedestrian safety reminder method of the present application;

[0039] Figure 3 A flowchart diagram of the second embodiment of the pedestrian safety reminder method of the present application;

[0040] Figure 4 A schematic diagram of the module structure provided for the third embodiment of the pedestrian safety prompt method of the present application;

[0041] Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in the pedestrian safety reminder method in the embodiment of the present application.

[0042] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0044] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0045] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, etc. The following takes the pedestrian safety reminder system as an example to illustrate this embodiment and the following embodiments.

[0046] Based on this, the present application embodiment provides a pedestrian safety prompt method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the pedestrian safety reminder method of the present application.

[0047] Step S10, detecting the running parameters of the vehicle in front of or behind the vehicle and the movement parameters of the pedestrian in front of or behind the vehicle;

[0048] Among them, vehicle operation parameters usually refer to the driving speed of vehicles in front or behind the vehicle and the relative distance from the vehicle; pedestrian motion parameters refer to the motion state of pedestrians, usually including the walking speed of pedestrians and the width of the road that pedestrians are about to pass.

[0049] The detection step occurs when a motor vehicle is parked on the side of the road and a pedestrian is about to cross the street from the front or rear of the vehicle. For details, please refer to Figure 2 , where car a is the vehicle and car b is the oncoming vehicle. Specifically, the system continuously monitors the real-time speed and distance information of vehicles traveling in the opposite lane through detection devices installed on the vehicle, such as radar detectors, and detects the movement status of pedestrians through rear sensors, and transmits this information in real time to the calculation module of the system for subsequent processing. It should be noted that the operating parameters of the vehicle in front of the vehicle are detected together with the operating parameters of the pedestrians behind the vehicle, in order to avoid accidents of ghost head-on. The operating parameters of the vehicle behind the vehicle are detected together with the operating parameters of the pedestrians in front of the vehicle, in order to avoid accidents of ghost head-on.

[0050] In some embodiments, the detection of vehicle operating parameters and pedestrian motion parameters in the front and rear directions of the vehicle can be achieved in a variety of ways: Optionally, two sets of front and rear millimeter wave radars are used to scan the front and rear lanes in real time to obtain the speed and distance information of the front and rear vehicles, and an infrared sensor array is used to detect the motion status of pedestrians in the front and rear directions, and the data is transmitted to the computing unit through the CAN bus; Optionally, front and rear cameras are used in conjunction with computer vision algorithms to identify the position and speed of vehicles coming from the front and rear directions, and ultrasonic sensors arranged in front and back are used to detect the motion status of pedestrians in the front and rear directions of the vehicle, and data is transmitted through a wireless communication module. It is understandable that other types of sensors or detection methods can also be used to obtain the required parameters, which are not limited here.

[0051] Step S20, determining whether the pedestrian is in a dangerous passage period according to the vehicle operation parameters and the pedestrian movement parameters;

[0052] Among them, the dangerous traffic period refers to the time period when the time required for pedestrians to pass is greater than the arrival time of oncoming vehicles; determination refers to judging through calculation whether the current time is in a dangerous traffic period.

[0053] This step is performed after obtaining the vehicle operation parameters and pedestrian movement parameters. Specifically, the calculation module calculates the time required for pedestrians to cross the street based on the detected road width and the average walking speed of pedestrians, and calculates the arrival time of the vehicle based on the speed and distance of the vehicle. By comparing these two time values, it is determined whether the current time period is dangerous.

[0054] In some embodiments, the determination of dangerous travel periods can be achieved in a variety of ways: optionally, fixed parameters and real-time data are calculated and compared to obtain a time difference to determine whether it is dangerous; optionally, a basic prediction model is established to combine multiple parameters for comprehensive calculation and judgment. It is understandable that other judgment methods can also be used to determine dangerous travel periods, which are not limited here.

[0055] Step S30, when the pedestrian is in a dangerous passage period, prompting the pedestrian to be prohibited from passing;

[0056] This step is performed after it is determined to be a dangerous traffic period. Specifically, the vehicle-mounted system sends a warning signal prohibiting passage to pedestrians behind the vehicle. Since vehicles parked on the side of the street may cause blind spots in the pedestrian's field of vision, the design of the vehicle-mounted warning equipment pays special attention to its maneuverability and flexibility, and can adapt to the traffic safety prompt needs of any parking section. The warning signal can be in the form of a vehicle-mounted visual prompt device, such as a red warning issued by a rear indicator light, display screen, etc.; it can also be a vehicle-mounted sound prompt device, such as an alarm issued by a vehicle-mounted buzzer; it can also be a vehicle-mounted ground projection device that projects a warning sign on the ground behind the vehicle. The system will automatically select or combine appropriate prompt methods according to the current environmental conditions (such as light intensity, noise level) to ensure that the warning signal can be effectively received and understood by pedestrians.

[0057] In some embodiments, pedestrian traffic prompts can be implemented through a variety of vehicle-mounted devices: Optionally, an audible and visual alarm is installed at the rear of the vehicle, which emits regular alarm sounds and flashes red warning lights in case of danger, and attracts the attention of pedestrians through a combination of sound and light. The frequency and volume of the alarm sound can be automatically adjusted according to the ambient noise level to ensure the prompt effect; Optionally, a vehicle-mounted ground projection device is used to project a striking red no-passing sign and dynamic arrow on the ground behind the vehicle, combined with an on-board digital display to display the specific waiting time, and guide pedestrians to avoid crossing through intuitive ground signs. This vehicle-mounted design allows the system to function in any parking position without being restricted by fixed facilities. It is understandable that other vehicle-mounted warning methods can also be used to implement the pedestrian prompt function, which is not limited here.

[0058] In general, this application continuously monitors operating parameters such as the speed and distance of vehicles coming from the front or rear through on-board sensors, and detects the movement status of pedestrians in front of or behind the vehicle. The system calculates and analyzes the acquired vehicle operation data (such as speed and distance) and preset pedestrian traffic parameters (such as road width and average walking speed) in real time to determine whether the current time period is suitable for pedestrians. When the system determines that it is in a dangerous traffic period, that is, when the arrival time of the oncoming vehicle is less than or equal to the time required for pedestrians to cross, it will immediately issue a clear warning to pedestrians prohibiting passage, such as displaying a red indicator light, until the dangerous period ends.

[0059] In this application, a real-time safety reminder mechanism is innovatively designed from the perspective of pedestrians, and accurate safety guidance for pedestrians can be achieved through simple on-board equipment, so the system implementation cost is significantly reduced and easy to promote. It effectively solves the technical problem of how to reduce the occurrence of ghost-heading traffic accidents, as well as the low penetration rate of intelligent driving assistance equipment in the existing technology and the inability to provide intuitive safety guidance for pedestrians. It thus provides timely and reliable safety protection for pedestrians in blind spots without relying on expensive equipment, effectively preventing traffic accidents caused by blocked vision, and improving the level of road traffic safety, and having good social and economic benefits.

[0060] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 3 Based on the first embodiment, this embodiment provides a specific fault prediction model training scheme as follows:

[0061] Step S201, detecting whether the ignition circuit is in a power-off state, and identifying and analyzing whether the vehicle is parked on the side of the road;

[0062] Among them, the ignition circuit refers to the vehicle's IGN power supply line, which is used to control the power supply status of the vehicle's electrical system; the power-off state indicates the working state where the IGN circuit voltage is 0V; the vehicle refers to the vehicle installed with the safety reminder system; the roadside refers to the edge area of ​​urban roads, streets and other traffic roads; recognition and analysis refers to the intelligent judgment of the vehicle's environment through sensors and algorithms.

[0063] This step is performed when the system is initialized. Specifically, the system first monitors the working status of the ignition circuit in real time through the voltage sensor connected to the IGN line. At the same time, the system starts the on-board camera to collect images of the vehicle's surrounding environment. The image is analyzed through a deep learning algorithm to identify road features such as road markings, curbs, and sidewalks to determine whether the vehicle is parked at a standardized road edge position. The system logically combines the two judgment results as the basis for subsequent working mode switching.

[0064] In some embodiments, parking status detection can be achieved in a variety of ways: Optionally, a relay is used to connect the IGN line to monitor the voltage status, and a high-definition camera is used in conjunction with a deep learning model for scene recognition. The camera collects 360-degree environmental images around the vehicle in real time, and the image is input into a pre-trained road scene recognition model. The model outputs a judgment result of whether the current position is the edge of the road. The system makes a decision based on the voltage status and scene recognition results; Optionally, a voltage sensor is used to collect the IGN voltage value in real time, and a laser radar is used to scan the surrounding environment to establish a three-dimensional point cloud map. The current scene is matched with a pre-stored road edge feature template through a point cloud registration algorithm. It is determined whether it is at the edge of the road based on the matching degree, and finally the voltage detection and environment recognition results are fused and analyzed. It is understandable that other sensor combinations can also be used to achieve parking status detection, which is not limited here.

[0065] Step S202, when the duration of the vehicle being in the power-off state is greater than the first preset duration and the vehicle is parked on the side of the road, a detection and collection module disposed on the vehicle body is used to monitor in real time whether there are oncoming vehicles or pedestrians within a preset range;

[0066] Among them, the power-off duration refers to the duration that the IGN circuit maintains the 0V state; the first preset duration is usually set to 5 minutes, which is used to distinguish between the temporary parking and long-term parking states of the vehicle; the detection and acquisition module refers to the sensor component installed on the vehicle body for environmental perception; the preset range refers to the monitoring area set by the system, including the detection range for oncoming vehicles in front or behind the vehicle and the detection range for pedestrians in front or behind the vehicle; real-time monitoring means continuous and uninterrupted detection.

[0067] This step is performed after the parking state detection is completed. Specifically, the system starts a timer to record the duration of the IGN power failure. When the system confirms that the vehicle is parked at the edge of the road and the power failure time exceeds 5 minutes, the vehicle is in a parking state. At this time, the system continuously scans the targets within the preset range through the detection and acquisition modules installed at different positions of the vehicle body. The detection range covers the vehicles and pedestrians in front and behind the vehicle, and the detection angle is a 45-degree fan-shaped area on the left side of the front of the vehicle; when a target is detected, the system automatically identifies the target type and determines whether it is an oncoming vehicle or a pedestrian through the characteristic parameters such as the size, shape, and motion characteristics of the target. The system uses a frequency of 20Hz to continuously detect and identify targets to ensure that targets entering the preset range can be discovered in time. It should be noted that the operating parameters of the vehicle in front of the vehicle are detected together with the operating parameters of the pedestrians behind the vehicle, in order to avoid accidents of ghost heads from the front of the vehicle. The operating parameters of the vehicle behind the vehicle are detected together with the operating parameters of the pedestrians in front of the vehicle, in order to avoid accidents of ghost heads from the rear of the vehicle.

[0068] In some embodiments, target detection in the front and rear directions can be achieved in a variety of ways: optionally, radar sensors are installed under the left and right rearview mirrors to detect oncoming vehicles in front, and sensors are installed on the front and rear bumpers to detect pedestrians in the front and rear directions, and data is collected in real time and transmitted to the control unit for target recognition and classification; optionally, front and rear bidirectional cameras are used to collect images, and target detection algorithms are used to simultaneously identify oncoming vehicles and pedestrians in the front and rear directions, determine the existence of the target and output the detection results. It is understandable that other detection methods can also be used to achieve target recognition, which are not limited here. Step S203, when there is an oncoming vehicle, detect the speed of the oncoming vehicle and the first distance;

[0069] Among them, the oncoming vehicle speed refers to the speed of the motor vehicle approaching the vehicle on the lane; the first distance refers to the relative distance between the oncoming vehicle and the vehicle; and detection refers to the real-time measurement and data collection of these parameters.

[0070] This step is triggered after an oncoming vehicle is detected. Specifically, the system measures the parameters of the identified oncoming vehicle target, obtains the real-time driving speed of the oncoming vehicle, and calculates the relative distance between the oncoming vehicle and the vehicle, and uses these data as the basic parameters for determining the dangerous driving period. The system will continue to update these parameters until the oncoming vehicle leaves the detection range.

[0071] In some embodiments, the vehicle parameter detection can be implemented in a variety of ways: optionally, using Doppler radar to measure the vehicle speed, calculating the relative distance by the flight time principle, and outputting the collected data after signal processing; optionally, using a visual system to track the vehicle position change to calculate the speed, and using a depth estimation algorithm to obtain distance information to implement parameter detection. It is understandable that other detection methods can also be used to obtain vehicle parameters, which are not limited here.

[0072] Step S204: When there are pedestrians, detect the pedestrian speed and road width:

[0073] Among them, pedestrian speed refers to the walking speed of pedestrians; road width refers to the width of the road that needs to be crossed; detection refers to the measurement and acquisition of these parameters.

[0074] This step is triggered after a pedestrian is detected. Specifically, the system measures the speed of the identified pedestrian target and calculates the real-time walking speed of the pedestrian through the position change between consecutive frames. At the same time, the system measures the road width at the current position in real time through the installed sensors, including the distance from the vehicle parking position to the edge of the opposite lane. The system uses the real-time collected pedestrian speed and road width data to calculate the time required for pedestrians to complete the road crossing, ensuring the accuracy of the calculation results.

[0075] In some embodiments, pedestrian parameter detection can be achieved in a variety of ways: optionally, a millimeter-wave radar sensor installed on the rear bumper can be used to track the position changes of pedestrians in real time to obtain the motion trajectory, and the instantaneous walking speed of pedestrians can be calculated based on multiple consecutive sampling points. At the same time, the actual road width at the current position can be obtained through the laser ranging module, and the collected speed and width data can be transmitted to the system for processing; optionally, a rear-mounted high-definition camera can be used to capture pedestrian images, and the pedestrian profile and motion characteristics can be identified through computer vision algorithms. The pedestrian movement speed is calculated in combination with image depth estimation technology, and the road width data can be obtained in real time using binocular vision measurement technology. After data fusion, the detection results are output. It can be understood that other detection methods can also be used to obtain pedestrian parameters and road data, which are not limited here.

[0076] Step S205, calculating a first time duration for the oncoming vehicle to reach the vehicle according to the oncoming vehicle speed and the first distance;

[0077] Among them, the first distance refers to the current distance between the oncoming vehicle and the vehicle; the first duration represents the time required for the oncoming vehicle to travel from the current position to the position of the vehicle; and calculation refers to estimating the time based on the physical motion formula.

[0078] This step is performed after obtaining the parameters of the approaching vehicle. Specifically, the system uses the uniform linear motion model to calculate the time required for the approaching vehicle to reach the vehicle's position based on the real-time collected approaching vehicle speed and distance data. The acceleration and deceleration characteristics of the approaching vehicle are taken into account during the calculation process. By continuously monitoring the movement status of the approaching vehicle, the speed and distance data are updated in real time to ensure the accuracy of the calculation results.

[0079] In some embodiments, the calculation of the first duration can be achieved in a variety of ways: optionally, using the classical physical motion formula, dividing the first distance by the speed of the vehicle to obtain the basic duration, and then correcting the duration in combination with the acceleration of the vehicle, and finally outputting the corrected first duration; optionally, establishing a vehicle motion prediction model, inputting real-time speed and distance data, and calculating a more accurate arrival time prediction value through the model. It is understandable that other calculation methods can also be used to obtain the first duration, which is not limited here.

[0080] Step S206, calculating a second time duration for the pedestrian to pass through the road according to the pedestrian speed and the road width;

[0081] Among them, pedestrian speed refers to the real-time walking speed of pedestrians; road width refers to the actual road width that needs to be crossed; the second duration represents the time required for pedestrians to complete the road crossing; calculation refers to estimating the passing time based on the pedestrian's movement characteristics.

[0082] This step is performed after obtaining the pedestrian parameters. Specifically, the system performs calculations based on the real-time collected pedestrian walking speed and road width data. The system first obtains the road width data measured in real time by the sensor, including the actual distance from the vehicle parking position to the edge of the opposite lane. At the same time, the system continuously tracks the movement of pedestrians through the rear sensor to obtain the real-time walking speed of pedestrians. The system divides the road width by the pedestrian's walking speed to obtain the time required for the pedestrian to complete the road crossing, which is the second duration. Throughout the process, the system keeps updating the pedestrian speed data every 50 milliseconds, and updates the calculation results of the second duration accordingly to ensure that the calculation results reflect the actual movement status of the pedestrians.

[0083] In some embodiments, the second duration can be calculated in a variety of ways: optionally, the road width is divided by the pedestrian speed to obtain the basic passing time, and then multiplied by a safety factor of 1.2-1.5, taking into account the acceleration and deceleration process of pedestrians, and finally obtaining the second duration; optionally, a pedestrian crossing time prediction model is established, and characteristic parameters such as the pedestrian's speed and age group are input, and a passing time that is more in line with the actual situation is calculated in combination with the road width. It is understandable that other calculation methods can also be used to obtain the second duration, which is not limited here.

[0084] Step S207, when the first time length is less than or equal to the second time length, determining that this time is the dangerous passage period;

[0085] Among them, the first time duration is less than or equal to the second time duration, which means that the arrival time of the oncoming vehicle is shorter than or equal to the passing time of the pedestrians; the dangerous passage period refers to the time period when there are traffic safety hazards; determination means that the system determines whether the current state meets the dangerous conditions.

[0086] This step is performed after obtaining two durations. Specifically, the system compares the calculated first duration with the second duration. When the first duration is less than or equal to the second duration, it indicates that the pedestrian cannot safely cross the road before the oncoming vehicle arrives, and the system will determine that the current moment is a dangerous time period. During the judgment process, the system will continuously update the duration data and perform real-time comparisons to ensure that changes in dangerous conditions can be discovered and responded to in a timely manner.

[0087] In some embodiments, the determination of dangerous travel periods can be achieved in a variety of ways: optionally, a threshold comparison method is used, and when the difference between the first duration and the second duration is less than a preset threshold, a dangerous state determination is triggered, and the threshold is dynamically adjusted considering environmental factors such as weather and road conditions; optionally, a multi-factor safety assessment model is established, and the duration comparison results are comprehensively analyzed with other safety-related parameters, and a more comprehensive danger level assessment result is obtained through model calculation. It is understandable that other determination methods can also be used to determine dangerous travel periods, which are not limited here.

[0088] Step S208, when the pedestrian is in a dangerous passage period, a prompt module is used to issue a prohibition-from-passing prompt for a third duration, where the third duration is the sum of the first duration and the second preset duration;

[0089] The dangerous traffic period refers to the time period when pedestrians cross the road and there is a safety risk; the prompt module refers to the parking module installed on the parking lot that blocks the view (such as Figure 2 A device component on a vehicle (a) used to issue a prompt message to pedestrians; the third time length indicates the duration of the no-pass prompt; the second preset time length refers to the basic prompt time pre-set by the system; the no-pass prompt refers to a warning message to pedestrians that it is not recommended to cross at this time.

[0090] This step is performed when the system determines that it is a dangerous time period. Specifically, the system calculates the third time length by adding the first time length required for pedestrians to pass the road to the second preset time length. The second preset time length can be set to 3 seconds to ensure that pedestrians have enough time to perceive and understand the warning information before starting to cross, while providing pedestrians with the necessary reaction and decision time, and to avoid collisions between vehicles and pedestrians when the first time length of the arrival of the oncoming vehicle is equal to or close to the second time length required for pedestrians to pass. By setting the second preset time length, a certain waiting time is given to allow pedestrians to wait for the second preset time length, thereby allowing vehicles and pedestrians to stagger to ensure pedestrian safety.

[0091] At the same time, when it is determined that the current dangerous passage period is in progress, the system immediately activates the reminder module at the rear of the vehicle and continuously issues a no-passing reminder through visual or audio means. The reminder duration is the calculated third time duration, during which the reminder module remains in working state. The system monitors the position of the oncoming vehicle and the status of the pedestrians in real time, and if the safety status changes during the reminder period, the reminder information will be updated in time.

[0092] In some embodiments, the no-passage warning can be implemented in a variety of ways: optionally, a red no-passage sign is displayed on an LED display screen installed at the rear of the vehicle, and a buzzer is activated to sound a warning, and the warning state is maintained during the entire third time period until the time is over or the danger is eliminated; optionally, a projection device is used to project no-passage text and patterns on the ground, combined with a flashing warning light, to form a striking visual warning effect to ensure that pedestrians can clearly perceive the current dangerous state. It is understandable that other prompting methods can also be used to implement the no-passage warning, which is not limited here.

[0093] Step S209, when the pedestrian is not in a dangerous passage period, a prompt module is used to give a prompt that the pedestrian can pass;

[0094] Among them, not in a dangerous passage period means that the current state is suitable for pedestrians to cross safely; the prompt module refers to the prompt device component at the rear of the vehicle; the prompt that can be passed refers to the instruction information sent to pedestrians that they can pass safely at this time.

[0095] This step is performed when the system determines that there is no dangerous time period. Specifically, when the system detects that the oncoming vehicle has passed or the pedestrian has enough time to cross, the working state of the prompt module is immediately switched. The system sends a prompt message to the pedestrian through the prompt module, which indicates that it is safe to pass, to help the pedestrian determine whether it is time to start crossing the road. The system continuously monitors the environmental status to ensure that the safety status does not change during the prompt period.

[0096] In some embodiments, the passable prompt can be implemented in a variety of ways: optionally, the LED display screen switches to a green pass sign, and the buzzer emits a short prompt sound to remind pedestrians that they can pass safely at present, while maintaining environmental monitoring to ensure passage safety; optionally, the ground projection switches to a green channel indicator pattern, combined with a gentle indicator light, to create a safe passage guidance effect and help pedestrians choose the appropriate time to pass. It is understandable that other prompting methods can also be used to implement the passable prompt, which is not limited here.

[0097] When the system is started, the detection and acquisition module on the vehicle body continuously monitors targets within the preset range. When an oncoming vehicle is detected, the system measures the speed and relative distance of the oncoming vehicle; when a pedestrian is detected, the system measures the speed of the pedestrian and the width of the road. Based on the acquired parameters, the system calculates the first time duration for the oncoming vehicle to reach the vehicle and the second time duration for the pedestrian to pass through the road. By comparing these two time durations, the system determines whether the current period is a dangerous passage period. If the first time duration is less than or equal to the second time duration, indicating that there is a safety risk, the system will issue a prohibition of passage prompt through the prompt module within the third time duration (pedestrian passage time plus preset reaction time); when there is no danger, the system will issue a prompt message that allows passage. Throughout the process, the system continuously updates data at a high frequency, adjusts the judgment results and prompt status in real time, and ensures the safety of pedestrians.

[0098] In the embodiment of the present application, due to the use of the front and rear two-way detection and multi-parameter joint judgment scheme, the movement state of the oncoming vehicle and pedestrians is monitored and analyzed in real time, so the current danger level of the traffic can be accurately assessed, and clear traffic guidance can be provided to pedestrians through the reasonably set prompt duration. At the same time, the system innovatively controls the start and stop of the system by detecting the power-off state of the ignition circuit and identifying the parking position of the vehicle. The detection module is activated only when the vehicle is parked on the side of the road and the power is off for more than the preset time, which significantly reduces the energy consumption of the system and extends the service life of the equipment. The intelligent working mode of this solution not only effectively solves the problem that the traditional passive warning cannot accurately reflect the real-time traffic conditions, but also avoids the energy waste caused by the continuous operation of the system, thereby realizing energy-saving and efficient pedestrian crossing safety warning, and significantly improving the safety of pedestrians when crossing the road. It not only avoids pedestrians from rushing through dangerous situations, but also does not cause unnecessary waiting in safe situations, and at the same time minimizes the system operation cost.

[0099] The present invention proposes a third embodiment of the vehicle pedestrian safety reminder system structure diagram, please refer to Figure 4 ,The vehicle-mounted pedestrian safety prompt system includes: a detection and acquisition module, a calculation module and a prompt module;

[0100] The detection and acquisition module is connected to the calculation module, and the calculation module is connected to the prompt module;

[0101] The detection and acquisition module is used to detect the running parameters of vehicles in front of or behind the vehicle and the movement parameters of pedestrians in front of or behind the vehicle;

[0102] The detection and acquisition module is installed on a parked vehicle that blocks the view (such as Figure 2 A car in the picture is a sensor component system for environmental perception; the sensor components include millimeter wave radar, lidar, camera and other types of perception devices; environmental perception refers to the detection and data collection of targets around the vehicle; the data collection frequency is usually set to above 20Hz to ensure real-time performance.

[0103] The detection and acquisition module is mainly used to realize target detection and parameter measurement in the front and rear directions of the vehicle. Specifically, the module monitors the oncoming vehicle in real time through the forward sensor group, and collects operating parameters including the speed of the oncoming vehicle and the relative distance between the oncoming vehicle and the vehicle; the sensor group detects pedestrians in the area in front of or behind the vehicle, and obtains key parameters such as pedestrian speed, movement direction, and the width of the road that the pedestrian is about to pass. After preprocessing, all collected data is transmitted to the calculation module in real time through the data interface for subsequent processing. The module adopts a multi-sensor fusion method to ensure stable and reliable detection performance under different environmental conditions.

[0104] In some embodiments, the detection and acquisition functions can be realized in a variety of ways: optionally, a 77GHz millimeter wave radar is installed on the front bumper for oncoming vehicle detection, and a 24GHz radar array is installed on the rear bumper for pedestrian detection, and a high-definition camera is used for target recognition and tracking, and the CAN bus is used to transmit data to the computing unit; optionally, a solution of laser radar and binocular camera is used, and accurate three-dimensional point cloud data is obtained through laser radar, and the binocular camera provides rich image information, and combined with deep learning algorithms to realize target detection and parameter measurement. It is understandable that other sensor combinations can also be used to achieve target detection and parameter acquisition, which is not limited here.

[0105] The calculation module is used to determine whether the pedestrian is in a dangerous passage period according to the vehicle operation parameters and the pedestrian movement parameters;

[0106] Among them, the computing module refers to the on-board computing unit used for data processing and analysis; data processing includes parameter calculation, state judgment and decision output; the computing unit has sufficient computing power and real-time performance; computing power refers to the amount of data that can be processed per second; real-time performance means that the delay from input to output is controlled at the millisecond level.

[0107] The calculation module is responsible for processing all data transmitted by the detection and acquisition module and making dangerous state judgments. Specifically, the module first corrects the received raw data to ensure the accuracy of the data. Then it calculates the first duration based on the parameters of the incoming vehicle and the second duration based on the parameters of the pedestrian. By comparing these two durations, it is determined whether the current period is dangerous. After the judgment result is verified for reliability, it is passed to the prompt module through the control signal interface. The entire calculation process is kept running in real time to ensure timely response to environmental changes.

[0108] In some embodiments, the computing and processing functions can be implemented in a variety of ways: optionally, an embedded processor can be used to improve computing efficiency through multi-threaded parallel processing, achieve millisecond-level response speed, and have lower power consumption and higher reliability; optionally, an on-board AI chip solution can be used with an integrated deep learning accelerator to simultaneously process multi-channel sensor data and quickly complete target recognition and trajectory prediction tasks. It is understandable that other computing platforms can also be used to implement data processing and state judgment, which is not limited here.

[0109] The prompt module is used to prompt the pedestrian that passage is prohibited when the pedestrian is in a dangerous passage period.

[0110] Among them, the prompt module refers to a multifunctional prompt device installed at the rear of the vehicle for issuing warning information; the warning information includes visual prompts and sound prompts; visual prompts include LED displays, ground projections and other methods; sound prompts include voice broadcasts and warning sounds; multifunctional means that the appropriate prompt method can be selected according to different scenarios.

[0111] The prompt module is responsible for conveying the judgment results of the calculation module to pedestrians in an intuitive way. Specifically, when a signal indicating a dangerous traffic period is received, the module immediately starts the preset warning program, displays a striking no-travel sign on the display screen, and emits a warning sound to remind pedestrians. The prompt duration is the third time, during which a stable warning state is maintained. When a signal indicating that traffic is allowed is received, the module switches to a green traffic sign and emits a short warning sound. The entire prompt process needs to ensure the timeliness and clarity of information transmission.

[0112] In some embodiments, the prompt warning function can be implemented in a variety of ways: optionally, a high-brightness LED display screen can be used in conjunction with a speaker, the display screen can display red and green traffic signs, and the speaker can emit prompt sounds of different frequencies to ensure that information can be clearly transmitted in different light and noise environments; optionally, a laser projector can be used in conjunction with an ambient light sensor to project eye-catching text and patterns on the ground, and the projection brightness can be automatically adjusted according to the ambient brightness to provide more intuitive visual guidance. It is understandable that other prompt devices can also be used to implement pedestrian traffic guidance, which is not limited here.

[0113] In general, this system innovatively starts from the perspective of pedestrians. Different from traditional passive warning devices, it accurately assesses the degree of danger and provides dynamic guidance through real-time monitoring in both directions and joint calculation of multiple parameters. The system uses conventional automotive-grade sensors and standard display devices, without the need for complex hardware modification, to achieve a low-cost and high-efficiency technical solution. By combining the accurate calculation of the arrival time of the vehicle and the time of the pedestrian passing, the system can give early warnings at dangerous moments and last for a sufficient period of time, so that pedestrians have sufficient perception and reaction time; in safe periods, the prompts are promptly removed to avoid unnecessary waiting. This innovative design of active warning combined with precise timing not only effectively solves the problem of "ghost head-on" accidents caused by blocked vision, improves the safety of pedestrians passing through the streets, but is also easy to promote and apply on various types of motor vehicles, with significant social benefits and practical value.

[0114] An embodiment of the present invention further provides a vehicle, in which the above-mentioned vehicle-mounted pedestrian safety reminder system is installed.

[0115] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the pedestrian safety reminder method of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0116] The present application provides a pedestrian safety reminder device, which includes: at least one processor; and a memory that is communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the pedestrian safety reminder method in the above-mentioned embodiment one.

[0117] Reference below Figure 5 , which shows a schematic diagram of the structure of a pedestrian safety reminder device suitable for implementing the embodiment of the present application. The pedestrian safety reminder device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The pedestrian safety reminder device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0118] like Figure 5As shown, the pedestrian safety reminder device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the pedestrian safety reminder device are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the pedestrian safety reminder device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a pedestrian safety reminder device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or provided alternatively.

[0119] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0120] The pedestrian safety reminder device provided by the present application adopts the pedestrian safety reminder method in the above embodiment, which can solve the technical problem of how to reduce the occurrence of ghost-heading traffic accidents. Compared with the prior art, the beneficial effects of the pedestrian safety reminder device provided by the present application are the same as the beneficial effects of the pedestrian safety reminder method provided by the above embodiment, and the other technical features of the pedestrian safety reminder device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0121] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0122] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0123] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the pedestrian safety prompt method in the above-mentioned embodiment.

[0124] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0125] The computer-readable storage medium may be included in the pedestrian safety reminder device; or may exist independently without being assembled into the pedestrian safety reminder device.

[0126] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0127] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned pedestrian safety prompt method, and can solve the technical problem of how to reduce the occurrence of ghost-peek-type traffic accidents. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the pedestrian safety prompt method provided by the above-mentioned embodiment, and will not be repeated here.

[0128] The present application also provides a computer program product, including a computer program, which implements the steps of the above-mentioned pedestrian safety prompt method when executed by a processor.

[0129] The computer program product provided by this application can solve the technical problem of how to reduce the occurrence of ghost-heading traffic accidents. Compared with the prior art, the beneficial effects of the computer program product provided by this application are the same as the beneficial effects of the pedestrian safety prompt method provided by the above embodiment, which will not be repeated here.

[0130] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A pedestrian safety prompt method, characterized in that: The pedestrian safety prompt method comprises: Detecting the running parameters of vehicles in front of or behind the vehicle and the movement parameters of pedestrians in front of or behind the vehicle; Determining whether the pedestrian is in a dangerous passage period according to the vehicle operation parameters and the pedestrian movement parameters; When the pedestrian is in a dangerous passage period, a prompt is given to the pedestrian that passage is prohibited.

2. The method according to claim 1, characterized in that The step of detecting the running parameters of the vehicle in front of or behind the vehicle and the movement parameters of the pedestrian in front of or behind the vehicle specifically includes: Detecting whether the ignition circuit is in a power-off state, and identifying and analyzing whether the vehicle is parked on the side of the road; When the duration of the vehicle being in the power-off state is greater than the first preset duration and the vehicle is parked on the side of the road, a detection and collection module arranged on the vehicle body is used to monitor in real time whether there are oncoming vehicles or pedestrians within a preset range; When there is an oncoming vehicle, detecting the speed and the first distance of the oncoming vehicle; When pedestrians are present, pedestrian speed and road width are detected.

3. The method according to claim 1, characterized in that The step of determining whether the pedestrian is in a dangerous passage period according to the vehicle operation parameters and the pedestrian movement parameters specifically includes: Calculate the first time duration of the oncoming vehicle to reach the vehicle based on the oncoming vehicle speed and the first distance; According to the pedestrian speed and the road width, the second time duration for the pedestrian to pass through the road is calculated; When the first time duration is less than or equal to the second time duration, it is determined that this time is the dangerous passage period.

4. The method according to claim 1, characterized in that The step of prompting the pedestrian to prohibit passage when the pedestrian is in a dangerous passage period specifically includes: When the pedestrian is in a dangerous passage period, a prompt module is used to issue a prohibition-from-passing prompt for a third time period, where the third time period is the sum of the first time period and the second preset time period.

5. The method according to claim 1, characterized in that The step of prompting the pedestrian to prohibit passage when the pedestrian is in a dangerous passage period comprises: When the pedestrian is not in a dangerous passage period, a prompt module is used to give a prompt that the pedestrian can pass.

6. A vehicle-mounted pedestrian safety reminder system, characterized in that: The vehicle-mounted pedestrian safety prompt system includes: a detection and collection module, a calculation module and a prompt module; The detection and acquisition module is connected to the calculation module, and the calculation module is connected to the prompt module; The detection and acquisition module is used to detect the running parameters of vehicles in front of or behind the vehicle and the movement parameters of pedestrians in front of or behind the vehicle; The calculation module is used to determine whether the pedestrian is in a dangerous passage period according to the vehicle operation parameters and the pedestrian movement parameters; The prompt module is used to prompt the pedestrian that passage is prohibited when the pedestrian is in a dangerous passage period.

7. A vehicle, characterized in that: The vehicle includes the vehicle-mounted pedestrian safety prompt system as described in claim 6.

8. A pedestrian safety reminder device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the pedestrian safety prompt method according to any one of claims 1 to 5.

9. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the pedestrian safety prompt method according to any one of claims 1 to 5 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the pedestrian safety prompt method according to any one of claims 1 to 5 are implemented.

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