CN116206436A

CN116206436A - Laser zebra crossing early warning equipment based on visible red light and control method thereof

Info

Publication number: CN116206436A
Application number: CN202310464366.3A
Authority: CN
Inventors: 刘军; 张江州; 邵全利; 牛云玲; 李贵; 张志雁; 李静; 马伟; 张然; ***
Original assignee: Shandong Leading Intelligent Transportation Technology Co ltd
Current assignee: Shandong Leading Intelligent Transportation Technology Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-06-02
Anticipated expiration: 2043-04-27
Also published as: CN116206436B

Abstract

The invention provides laser zebra crossing early warning equipment based on visible red light and a control method thereof, and relates to the field of road safety control. The method comprises the following steps: acquiring environment information of a target intersection provided with a laser zebra crossing, wherein the environment information comprises time information, weather information and temperature information; acquiring first position information of pedestrians in a first range area, wherein the first range area comprises a pavement area around a target intersection and a pedestrian waiting area; acquiring vehicle information of the vehicle in the second range area, wherein the vehicle information comprises speed information of the vehicle, acceleration information of the vehicle and history maintenance information of the vehicle; determining an early warning intensity based on the first location information, the environmental information, and the vehicle information; the laser zebra stripes are controlled based on the early warning intensity to early warn the driver of the vehicle. The early warning intensity can be determined by combining the first position information of the pedestrians, the environment information and the vehicle information, and the laser zebra crossing is controlled based on the early warning intensity to early warn the driver.

Description

Laser zebra crossing early warning equipment based on visible red light and control method thereof

Technical Field

The invention relates to the field of road safety control, in particular to a visible red light-based laser zebra crossing early warning device and a control method thereof.

Background

Zebra stripes refer to walking ranges of specified pedestrians on a roadway, which are marked by marked lines such as zebra stripes or other methods, crossing a lane, and are used for preventing the pedestrians from being hurt when the vehicle is fast running, and the marked lines on the roadway designate places where the pedestrians need to be decelerated to cross the street, so that the pedestrians are taken as traffic participants, and travel every day, whether the pedestrians are pedestrians or drivers, almost all the pedestrians need to pass through the zebra stripes, and the purpose of the zebra stripes is to enable the pedestrians to cross the street orderly and safely. However, in reality, many times, it is unsafe, and in severe weather such as night, overcast and rainy days, haze days, etc., the visibility of zebra stripes and pedestrians is reduced due to the influence of the driver's vision, and the danger coefficient is increased accordingly, so that the occurrence rate of traffic accidents is several times higher than that of ordinary times in such severe environment.

The existing intelligent luminous zebra stripes system is composed of luminous floor tiles made of composite materials and LED luminous plates, and the luminous principle is not described herein. The intelligent zebra stripes can remind the vehicle driver to pay attention to pedestrians through light emission. The "intelligent zebra stripes" of current test runs can be broadly divided into three categories: when a pedestrian enters a designated induction area, triggering light or sound systems at two sides of a zebra crossing to remind the vehicle to give the pedestrian a gift; the second type is that the system automatically adjusts traffic lights by sensing the number of people passing through the road in a designated area, so as to ensure the passers-by to pass preferentially; the third type is to turn on the street lamps on both sides of the zebra stripes by pressing a designated button on the street lamp. However, the current intelligent zebra stripes trigger a single way of reminding the driver, and the reminding intensity is not easy to adjust.

Disclosure of Invention

The invention aims to provide a visible red light-based laser zebra crossing early warning device and a control method thereof, which are used for solving the problems that in the prior art, the mode of triggering to remind a driver is single, and the reminding intensity is not easy to adjust.

In order to achieve the above object, the technical scheme adopted by the embodiment of the invention is as follows:

in a first aspect, an embodiment of the present invention provides a laser zebra crossing early warning control method based on visible red light, where the method includes: acquiring environment information of a target intersection provided with the laser zebra stripes, wherein the environment information comprises time information, weather information and temperature information; acquiring first position information of pedestrians in a first range area, wherein the first range area comprises a pavement area around the target intersection and a pedestrian waiting area; acquiring vehicle information of a vehicle in a second range area, wherein the vehicle information comprises speed information of the vehicle, acceleration information of the vehicle and history maintenance information of the vehicle; determining an early warning intensity based on the first location information, the environmental information, and the vehicle information; and controlling the laser zebra stripes based on the early warning intensity to early warn the driver of the vehicle, wherein the early warning intensity is positively correlated with the intensity of controlling the laser zebra stripes to early warn the driver of the vehicle.

According to the method of the first aspect, the laser zebra crossing early warning device based on visible red light and the control method thereof provided by the invention can comprehensively determine the early warning intensity by combining the first position information of the pedestrian, the vehicle information of the vehicle and the environment information, and then control the laser zebra crossing based on the early warning intensity to early warn the driver of the vehicle, and the early warning intensity can be determined by various factors, namely, more modes for reminding the driver are triggered. And, the laser zebra stripes are used for carrying out early warning on the driver of the vehicle and are controlled based on early warning intensity, so that the reminding intensity can be adjusted.

With reference to the first aspect, in one possible design, the determining the early warning intensity based on the first location information, the environmental information, and the vehicle information includes: if the first position information is in the sidewalk area, determining that the initial early warning intensity is a first initial value; if the first position information is in the pedestrian waiting area, determining that the initial early warning intensity is a second initial value, wherein the second initial value is smaller than the first initial value; generating a first intensity correction parameter based on the environmental information; generating a second intensity correction parameter based on the vehicle information; and correcting the initial early warning intensity based on the first intensity correction parameter and the second intensity correction parameter to obtain the early warning intensity.

According to the possible design, when the first position information is in the pavement area, the initial early warning intensity is determined to be larger than the initial early warning intensity when the first position information is in the pedestrian waiting area. Therefore, when no pedestrian exists in the pavement area, the laser zebra stripes can be controlled with low early warning intensity so as to early warn the driver of the vehicle. Furthermore, the initial early warning intensity can be corrected based on the environment information and the vehicle information, so that more reasonable early warning intensity is obtained.

With reference to the first aspect, in one possible design, the generating the second intensity correction parameter based on the vehicle information includes: setting a first intermediate intensity value based on the speed information; setting a second intermediate intensity value based on the acceleration information; setting a third intermediate intensity value based on the historical maintenance information; the second intensity correction parameter is generated based on the first intermediate intensity value, the second intermediate intensity value, and the third intermediate intensity value.

According to this possible embodiment, the second intensity correction parameter can be determined based on the speed information, the acceleration information and the history maintenance information, so that the second intensity correction parameter corresponding to the vehicle can be obtained. Rather than using the same second intensity correction parameter for each vehicle. The second intensity correction parameter is variable for different vehicles, so that the laser zebra crossing can be better controlled to give an early warning to the driver of the vehicle.

With reference to the first aspect, in one possible design, the setting a first intermediate intensity value based on the speed information includes: determining a speed interval in which the speed information is in a pre-acquired speed and first intermediate intensity value comparison table as a target speed interval, wherein the speed and first intermediate intensity value comparison table comprises a plurality of speed intervals and intensity values corresponding to each speed interval; searching an intensity value corresponding to the target speed interval in the first intermediate intensity value comparison table as the first intermediate intensity value; the setting of the second intermediate intensity value based on the acceleration information comprises: acquiring an absolute value of the acceleration information, and determining the magnitude of the second intermediate intensity value based on the absolute value; if the acceleration information is positive, determining that the second intermediate intensity value is positive, wherein the positive acceleration information indicates that the vehicle is in acceleration; if the acceleration information is negative, determining that the second intermediate intensity value is negative, wherein the negative acceleration information indicates that the vehicle is in deceleration; the historical maintenance information includes a historical maintenance time, and the setting of the third intermediate intensity value based on the historical maintenance information includes: and setting the third intermediate intensity value based on a time difference between the historical maintenance time and the current time, wherein the time difference is positively correlated with the third intermediate intensity value.

According to this possible embodiment, the first intermediate intensity value can be determined from a previously acquired first intermediate intensity value comparison table on the basis of the speed information; the magnitude of the second intermediate intensity can be determined according to the absolute value of the acceleration information, and the positive and negative values of the second intermediate intensity are determined according to the positive and negative values of the acceleration information; a third intermediate intensity value may also be determined from the time difference. Thereby, more accurate early warning intensity can be obtained.

With reference to the first aspect, in one possible design, the generating a first intensity correction parameter based on the environmental information includes: if the time information is in the first time period, setting a fourth intermediate intensity value as a first value, wherein the first time period is a time period from sunrise to sunset; if the time information is in the second time period, setting the fourth intermediate intensity value as a second value, wherein the second time period is a time period from sunset to sunrise, and the second value is larger than the first value; if the weather information is rainy, setting a fifth intermediate intensity value as a third value; if the weather information is not rainy, setting the fifth intermediate intensity value as a fourth value, wherein the third value is larger than the fourth value; if the temperature information is smaller than or equal to the temperature threshold value, setting a sixth intermediate intensity value as a fifth value; if the temperature information is greater than the temperature threshold value, setting the sixth intermediate intensity value as a sixth value, wherein the fifth value is greater than the sixth value; the first intensity correction parameter is generated based on the fourth intermediate intensity value, the fifth intermediate intensity value, and the sixth intermediate intensity value.

According to this possible embodiment, a larger fourth intermediate value can be set in the sunset to sunrise time period; when the weather information is rainy, a larger fifth intermediate intensity can be set; when the temperature is lower, a larger sixth intermediate intensity can be set, so that the first intensity correction parameter is generated based on the fourth intermediate intensity value, the fifth intermediate intensity value and the sixth intermediate intensity value, and then the early warning intensity is adjusted based on the first intensity correction parameter, so that the larger early warning intensity can be determined under the weather, time period and air temperature conditions in which accidents are easy to occur.

With reference to the first aspect, in a possible design, if the weather information is raining, setting a fifth intermediate intensity value to be a third value includes: if the weather information is rainy, determining the third value based on the rainy degree, wherein the third value is positively correlated with the rainy degree; setting the fifth intermediate intensity value to the third value.

According to the possible design scheme, in the embodiment provided by the invention, when the weather information is raining, the fifth intermediate intensity value is positively correlated with the raining degree, so that when the raining degree is high, the fifth intermediate intensity value can be obtained, and further, the high early warning intensity is obtained to control the laser zebra crossing so as to early warn the driver of the vehicle.

With reference to the first aspect, in one possible design, if the temperature information is less than or equal to a temperature threshold, setting the sixth intermediate intensity value to be a fifth value includes: if the temperature information is smaller than or equal to a temperature threshold value, acquiring a difference value between the temperature information and the temperature threshold value; determining the fifth value based on the difference value, wherein the fifth value is positively correlated with the difference value; setting the sixth intermediate intensity value to a fifth value.

According to the possible design scheme, in the embodiment provided by the invention, when the temperature information is smaller, the larger sixth intermediate intensity value can be determined as the temperature information is smaller, so that when the temperature information is lower, the larger sixth intermediate intensity value can be obtained, and further, the larger early warning intensity is obtained to control the laser zebra crossing so as to early warn the driver of the vehicle.

With reference to the first aspect, in one possible design, the controlling the laser zebra stripes based on the early warning intensity to early warn the driver of the vehicle includes: and determining the working mode and the luminous intensity of the laser zebra crossing corresponding to the early warning intensity based on the pre-acquired early warning intensity and laser zebra crossing curve, wherein the early warning intensity and the laser zebra crossing curve are used for representing the corresponding relation between different early warning intensities and the working mode and the luminous intensity.

According to the possible design scheme, in the embodiment provided by the invention, the working mode and the luminous intensity of the laser zebra crossing can be adjusted according to the pre-acquired early warning intensity and the laser zebra crossing curve, so that the reasonable working mode and luminous intensity are acquired.

In a second aspect, there is provided a laser zebra crossing early warning device based on visible red light, the device comprising: the device comprises a first acquisition unit, a second acquisition unit, a third acquisition unit, a determination unit and an early warning unit. The first acquisition unit is used for acquiring environment information of a target intersection provided with the laser zebra stripes, wherein the environment information comprises time information, weather information and temperature information; a second acquiring unit configured to acquire first position information of a pedestrian in a first range area including a sidewalk area around the target intersection and a pedestrian waiting area; a third acquisition unit configured to acquire vehicle information of a vehicle in the second range area, the vehicle information including speed information of the vehicle, acceleration information of the vehicle, and history maintenance information of the vehicle; a determining unit configured to determine an early warning intensity based on the first location information, the environment information, and the vehicle information; and the early warning unit is used for controlling the laser zebra crossing based on the early warning intensity so as to early warn a driver of the vehicle.

In addition, the technical effects of the visible red light-based laser zebra stripes early warning device described in the second aspect may refer to the technical effects of the method described in the first aspect, and will not be repeated here.

In a third aspect, an embodiment of the present invention provides an electronic device. The electronic device includes: a processor and a memory; the memory is configured to store a computer program which, when executed by the processor, causes the electronic device to perform the method according to any one of the implementations of the first aspect.

The invention has the following advantages:

the laser zebra crossing early warning device based on the visible red light and the control method thereof can comprehensively determine the early warning intensity by combining the first position information of pedestrians, the vehicle information of vehicles and the environment information, then control the laser zebra crossing based on the early warning intensity to early warn the drivers of the vehicles, and can determine the early warning intensity through various factors, namely, more modes of reminding the drivers are triggered. And, the laser zebra stripes are used for carrying out early warning on the driver of the vehicle and are controlled based on early warning intensity, so that the reminding intensity can be adjusted.

In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a method flowchart of a visible red light-based laser zebra stripes early warning control method provided by an embodiment of the invention;

fig. 2 is a schematic structural diagram of a device of a laser zebra crossing early warning control method based on visible red light according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;

FIG. 4 shows a block diagram of a computer-readable storage medium provided by an embodiment of the invention;

fig. 5 shows a block diagram of a computer program product provided by an embodiment of the invention.

In the figure: 300-an electronic device; 301-a processor; 302-memory; 303-a communication interface; 200-a visible red light-based laser zebra crossing early warning device; 210-a first acquisition unit; 220-a second acquisition unit; 230-a third acquisition unit; 240-a determination unit; 250-an early warning unit; 400-computer readable storage medium; 410 program code; 500-a computer program product; 510-computer program/instructions.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those conventionally put in use in the application, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

At present, with the development of electronic information technology, a vehicle driver can be reminded of paying attention to pedestrians near a zebra crossing. However, the current mode of triggering to remind the driver is single, and the strength of reminding is not easy to adjust.

In recent years, with the continuous perfection of traffic rules, the construction force of urban road infrastructure is increased, traffic signal lamps are installed, traffic isolation devices are set up, measures such as diversion of people and vehicles are implemented, the number of traffic accidents in the city is obviously reduced, and the safe travel of people and vehicles is well ensured. However, the number of vehicles and pedestrians in cities is large, the contradiction between pedestrians and vehicles is increasing, and traffic accidents still occur frequently. According to published data, traffic accidents of pedestrians and vehicles in urban roads are mainly concentrated on crossroads and zebra crossings, especially at intersections without traffic lights. Although pedestrians have the right to pass preferentially on the zebra crossing, most cities are provided with a saluting pedestrian sign in front of the zebra crossing, and high-definition cameras are installed to further restrict the driving behaviors of vehicle drivers, potential safety hazards on the zebra crossing still exist. On one hand, due to the fact that the driver is poor in sight due to weather reasons such as night driving, rain, snow and fog, and the like, the correct treatment method cannot be adopted in time. On the other hand, the speed of the vehicle is high, so that the vehicle cannot be braked in time. In a traffic accident, a person is a main body, and only when a pedestrian and a driver acquire information of the other party at the first time, obviously, the traditional road traffic facilities cannot combine various information to timely early warn the driver.

To solve the above-mentioned problem, an "intelligent zebra stripes" have been developed. The system mainly comprises a detection module and a main control module, wherein after the detection module detects pedestrian information on a zebra crossing, the pedestrian information is sent to the main control module, and the main control module triggers light or sound to remind pedestrians and vehicles so as to achieve the warning purpose. At present, the construction of the intelligent zebra stripes is still in a starting stage. However, only if pedestrians are in the designated sensing area, the system can accurately detect the information of the pedestrians, and when the pedestrians are out of the sensing area or the number of pedestrians exceeds the accommodation amount of the sensing area, the driver can accept wrong prompt information. Therefore, the mode of triggering the reminding of the driver is single, and the reminding strength is not easy to adjust, so that the method is a problem to be solved urgently.

In view of the above, the present invention provides a laser zebra crossing early warning device based on visible red light and a control method thereof, so as to solve the above problems.

The following illustrates an example of a visible red light-based laser zebra crossing early warning device and a control method thereof:

as an optional implementation manner, referring to fig. 1, fig. 1 shows a visible red light-based laser zebra crossing early warning device and a control method thereof according to an embodiment of the present invention, where the method may be applied to an electronic device, and specifically may include steps S110 to S150 with a processor in the electronic device as an execution body.

Step S110: and acquiring environment information of the target intersection provided with the laser zebra stripes, wherein the environment information comprises time information, weather information and temperature information.

Step S120: and acquiring first position information of pedestrians in a first range area, wherein the first range area comprises a pavement area around the target intersection and a pedestrian waiting area.

Step S130: vehicle information of the vehicle in the second range area is acquired, wherein the vehicle information comprises speed information of the vehicle, acceleration information of the vehicle and history maintenance information of the vehicle.

Step S140: and determining early warning intensity based on the first position information, the environment information and the vehicle information.

Step S150: and controlling the laser zebra stripes based on the early warning intensity to early warn the driver of the vehicle, wherein the early warning intensity is positively correlated with the intensity of controlling the laser zebra stripes to early warn the driver of the vehicle.

For some embodiments, the target intersection may be provided with a laser zebra crossing that may provide an early warning to the driver of the vehicle, such as a visible red light, a visible blue light, etc., and may also sound.

The environmental information of the target intersection of the laser zebra stripes may be first acquired, including time information, weather information, and temperature information. For example, location information of a target intersection may be acquired, and then weather information and temperature information may be determined based on the location information. The time information may be the current time.

Further, first position information of pedestrians in a first range area may be acquired, where the first range area includes a sidewalk area around the target intersection and a pedestrian waiting area. That is, the first location information may include a pavement area around the target intersection where the pedestrian is located, or may include a pedestrian waiting area where the pedestrian is located, so that different early warning intensities may be adjusted and acquired.

Further, vehicle information of the vehicle in the second range area is acquired, wherein the vehicle information comprises speed information of the vehicle, acceleration information of the vehicle and history maintenance information of the vehicle. In some embodiments, the second range region may include a region of a specified range around the target intersection, such as a range of 100 meters around the target intersection. In other embodiments, the second range area may further include a specified length of road connected to the target intersection, for example, the specified length may be 400 meters.

The pre-warning intensity may be determined based on the first location information, the environment information, and the vehicle information, and in an exemplary implementation, when step S140 is performed, the method may further include: if the first position information is in the sidewalk area, determining that the initial early warning intensity is a first initial value; if the first position information is in the pedestrian waiting area, determining that the initial early warning intensity is a second initial value, wherein the second initial value is smaller than the first initial value; generating a first intensity correction parameter based on the environmental information; generating a second intensity correction parameter based on the vehicle information; and correcting the initial early warning intensity based on the first intensity correction parameter and the second intensity correction parameter to obtain the early warning intensity.

Since the vehicle may collide with the pedestrian when passing through the intersection if the first position information is located in the sidewalk area, the initial early warning intensity may be determined to be a first initial value at this time, and the first initial value may be a larger value. If the first position information is in the waiting area of the pedestrian, the possibility of collision between the vehicle and the pedestrian is smaller when the vehicle passes through the intersection, so that the initial early warning intensity can be determined to be a second initial value, and the second initial value can be a smaller value. Wherein the second initial value is smaller than the first initial value.

Optionally, when executing the generating the second intensity correction parameter based on the vehicle information, the method may further include: setting a first intermediate intensity value based on the speed information; setting a second intermediate intensity value based on the acceleration information; setting a third intermediate intensity value based on the historical maintenance information; the second intensity correction parameter is generated based on the first intermediate intensity value, the second intermediate intensity value, and the third intermediate intensity value.

In some embodiments, the vehicle information may include speed information, acceleration information of the vehicle, and historical maintenance information of the vehicle, and thus the first intermediate intensity value may be set based on the speed information; setting a second intermediate intensity value based on the acceleration information; setting a third intermediate intensity value based on the historical maintenance information; thereby generating the second intensity correction parameter based on the first intermediate intensity value, the second intermediate intensity value, and the third intermediate intensity value. For example, the sum of the first intermediate intensity value, the second intermediate intensity value, and the third intermediate intensity value may be used as the second intensity correction parameter.

Optionally, when performing the setting of the first intermediate intensity value based on the speed information, the method may further include: determining a speed interval in which the speed information is in a pre-acquired speed and first intermediate intensity value comparison table as a target speed interval, wherein the speed and first intermediate intensity value comparison table comprises a plurality of speed intervals and intensity values corresponding to each speed interval; and searching an intensity value corresponding to the target speed interval in the first intermediate intensity value comparison table as the first intermediate intensity value.

The speed and first intermediate intensity value comparison table may be obtained in advance, and the speed and first intermediate intensity value comparison table may include a plurality of speed intervals and intensity values corresponding to each speed interval. An exemplary may include four speed intervals of 0-30km/h, 30-60km/h, 60-90 km/h, and over 90 km/h, including four intensity values of x1, x2, x3, and x4, where 0-30km/h corresponds to x1, 30-60km/h corresponds to x2, 60-90 km/h corresponds to x3, and 90 km/h corresponds to x 4. It is readily understood that x1, x2, x3, and x4 exhibit a tendency to become progressively larger.

It should be noted that, the speed and the plurality of speed intervals included in the first intermediate intensity value comparison table and the intensity value corresponding to each speed interval are only examples, and are not limited by the embodiment of the present invention, and may be flexibly selected according to the need.

Optionally, when performing the setting of the second intermediate intensity value based on the acceleration information, the method may further include: acquiring an absolute value of the acceleration information, and determining the magnitude of the second intermediate intensity value based on the absolute value; if the acceleration information is positive, determining that the second intermediate intensity value is positive, wherein the positive acceleration information indicates that the vehicle is in acceleration; and if the acceleration information is negative, determining that the second intermediate intensity value is negative, wherein the negative acceleration information indicates that the vehicle is in deceleration.

It will be appreciated that since the acceleration information may comprise positive or negative acceleration information, i.e. acceleration information being positive, it is indicative that the vehicle is accelerating; and if the acceleration information is negative, indicating that the vehicle is in deceleration. And the specific speed of acceleration or deceleration of the vehicle is dependent on the absolute value of the acceleration information. Thus, the absolute value of the acceleration information may be obtained to determine the magnitude of the second intermediate intensity value. And because the strong and static strength can be given to the driver if the vehicle is still in an acceleration condition, and the weak early warning strength can be given to the driver at the moment if the vehicle is in a reduction condition, the positive and negative of the second intermediate strength value can be determined based on the positive and negative conditions of the acceleration information. Specifically, if the acceleration information is a positive value, determining that the second intermediate intensity value is positive; and if the acceleration information is negative, determining that the second intermediate intensity value is negative.

Optionally, the historical maintenance information includes a historical maintenance time, and when the setting of the third intermediate intensity value based on the historical maintenance information is performed, the method may further include: and setting the third intermediate intensity value based on a time difference between the historical maintenance time and the current time, wherein the time difference is positively correlated with the third intermediate intensity value.

In some embodiments, the historical maintenance time can be used for representing the time of maintaining the vehicle, so that the time difference between the historical maintenance time and the current time can be used for representing the time length of the vehicle after the maintenance is performed, and the longer the time difference is, the more unstable conditions of the vehicle are represented, such as tire burst, insufficient brake assistance, hydraulic oil leakage, insufficient steering assistance and the like, so that accidents are more likely to be caused. Thus, a third intermediate intensity value may also be set based on the time difference such that the time difference is positively correlated with the third intermediate intensity value.

Optionally, when generating the first intensity correction parameter based on the environmental information, the method may further include: if the time information is in the first time period, setting a fourth intermediate intensity value as a first value, wherein the first time period is a time period from sunrise to sunset; if the time information is in the second time period, setting the fourth intermediate intensity value as a second value, wherein the second time period is a time period from sunset to sunrise, and the second value is larger than the first value; if the weather information is rainy, setting a fifth intermediate intensity value as a third value; if the weather information is not rainy, setting the fifth intermediate intensity value as a fourth value, wherein the third value is larger than the fourth value; if the temperature information is smaller than or equal to the temperature threshold value, setting a sixth intermediate intensity value as a fifth value; if the temperature information is greater than the temperature threshold value, setting the sixth intermediate intensity value as a sixth value, wherein the fifth value is greater than the sixth value; the first intensity correction parameter is generated based on the fourth intermediate intensity value, the fifth intermediate intensity value, and the sixth intermediate intensity value.

In some implementations, the environmental information may include time information, weather information, and temperature information. It is easy to understand that during the daytime, the driver generally has a better line of sight, so that a smaller early warning intensity can be determined; and during the night period, the driver generally has a poor sight line, so that a high early warning intensity can be determined. Thus, the fourth intermediate intensity may be determined to be a first value during a first period of time, which is a sunrise to sunset period, i.e. a daytime period. And a second value of the fourth intermediate intensity may be determined in a second period of time, which is a period of time from sunset to sunrise, i.e. a period of time at night, wherein the second value is greater than the first value.

Further, a fifth intermediate intensity value may also be set according to weather information. Specifically, if the weather information is raining, a larger early warning intensity can be determined; if the vehicle is not raining, smaller early warning intensity can be determined. Therefore, if the weather information is rainy, setting a fifth intermediate intensity value as a third value; and if the weather information is not rainy, setting the fifth intermediate intensity value as a fourth value, wherein the third value is larger than the fourth value.

Further, a sixth intermediate intensity value may also be set according to the temperature information. Specifically, if the temperature is less than zero degree, the road surface may be frozen, and the braking performance of the vehicle may be weakened, so that a larger early warning intensity can be determined at the moment. Therefore, the temperature threshold value can be preset, and if the temperature information is smaller than or equal to the temperature threshold value, the sixth intermediate intensity value is set as a fifth value; and if the temperature information is greater than the temperature threshold value, setting the sixth intermediate intensity value as a sixth value, wherein the fifth value is greater than the sixth value. An exemplary, temperature threshold may be 0 degrees celsius; for another example, the temperature threshold may also be a temperature slightly greater than 0 degrees celsius, such as 0.5 degrees celsius or 1 degree celsius.

The first intensity correction parameter may thereby be generated based on the fourth intermediate intensity value, the fifth intermediate intensity value, and the sixth intermediate intensity value.

Optionally, when the weather information is raining, setting the fifth intermediate intensity value to the third value may further include: if the weather information is rainy, determining the third value based on the rainy degree, wherein the third value is positively correlated with the rainy degree; setting the fifth intermediate intensity value to the third value.

It will be readily appreciated that the degree of rain will have an effect on the driver and therefore that a greater fifth intermediate intensity value may also be set when the degree of rain is heavy and a lesser fifth intermediate intensity value when the degree of rain is light.

That is, the third value may be determined based on the degree of rain, wherein the third value is positively correlated with the degree of rain; and then setting the fifth intermediate intensity value to the third value. According to the possible design scheme, in the embodiment provided by the invention, when the weather information is raining, the fifth intermediate intensity value is positively correlated with the raining degree, so that when the raining degree is high, the fifth intermediate intensity value can be obtained, and further, the high early warning intensity is obtained to control the laser zebra crossing so as to early warn the driver of the vehicle.

Optionally, when the executing if the temperature information is less than or equal to the temperature threshold, setting the sixth intermediate intensity value to the fifth value may further include: if the temperature information is smaller than or equal to a temperature threshold value, acquiring a difference value between the temperature information and the temperature threshold value; determining the fifth value based on the difference value, wherein the fifth value is positively correlated with the difference value; setting the sixth intermediate intensity value to a fifth value.

It is easy to understand that when the temperature information is less than or equal to the temperature threshold value, if the difference between the temperature information and the temperature threshold value is larger, the possibility of road surface icing is larger, and the degree of road surface icing is also more serious. Thus, at this point the fifth value may also be determined based on the difference value, wherein the fifth value is positively correlated with the difference value; setting the sixth intermediate intensity value to a fifth value.

Further, when performing the control of the laser zebra stripes based on the early warning intensity to early warn the driver of the vehicle, the method may further include: and determining the working mode and the luminous intensity of the laser zebra crossing corresponding to the early warning intensity based on the pre-acquired early warning intensity and laser zebra crossing curve, wherein the early warning intensity and the laser zebra crossing curve are used for representing the corresponding relation between different early warning intensities and the working mode and the luminous intensity.

Therefore, after the early warning intensity is determined, the laser zebra crossing working mode corresponding to the early warning intensity and the luminous intensity can be determined through the early warning intensity and the laser zebra crossing curve which are acquired in advance. The laser zebra stripes operating modes may include, for example, modes that are normally bright, flash at the same interval, flash at different intervals, and the like. When the laser zebra stripes emit light, visible red light can be emitted.

In some embodiments, the stronger the early warning intensity, the higher the duty cycle of the light emitted by the laser zebra crossing when the light is emitted, so that the more the time of the light is emitted, and the better the early warning is performed on the driver of the vehicle. The duty ratio may be a ratio of a time period of the laser zebra stripes emitting light in one light emitting period to the light emitting period, for example, 20%, 50% or 100%. For example, if the duty cycle is 100%, it is indicated that the laser zebra stripes are always bright in this lighting period.

Further, the luminous intensity is positively correlated with the early warning intensity. That is, the greater the early warning intensity, the greater the luminous intensity, so as to better early warn the driver of the vehicle.

Referring to fig. 2, fig. 2 shows a schematic structural diagram of a laser zebra crossing early warning device 200 based on visible red light according to an embodiment of the present invention. As shown in fig. 2, the visible red light-based laser zebra stripes warning device 200 includes a first acquisition unit 210, a second acquisition unit 220, a third acquisition unit 230, a determination unit 240, and a warning unit 250.

For ease of illustration, fig. 2 shows only the main components of the visible red-based laser zebra crossing warning device 200.

The first obtaining unit 210 is configured to obtain environmental information of the target intersection provided with the laser zebra stripes, where the environmental information includes time information, weather information, and temperature information.

The second obtaining unit 220 is configured to obtain first position information of pedestrians in a first range area, where the first range area includes a pavement area around the target intersection and a pedestrian waiting area.

A third acquiring unit 230 for acquiring vehicle information of the vehicle in the second range area, the vehicle information including speed information of the vehicle, acceleration information of the vehicle, and history maintenance information of the vehicle.

A determining unit 240, configured to determine an early warning intensity based on the first location information, the environment information, and the vehicle information.

Optionally, the determining unit 240 may be further configured to determine that the initial early warning intensity is a first initial value if the first location information is in the pavement area; if the first position information is in the pedestrian waiting area, determining that the initial early warning intensity is a second initial value, wherein the second initial value is smaller than the first initial value; generating a first intensity correction parameter based on the environmental information; generating a second intensity correction parameter based on the vehicle information; and correcting the initial early warning intensity based on the first intensity correction parameter and the second intensity correction parameter to obtain the early warning intensity.

Alternatively, the determining unit 240 may be further configured to set a first intermediate intensity value based on the speed information; setting a second intermediate intensity value based on the acceleration information; setting a third intermediate intensity value based on the historical maintenance information; the second intensity correction parameter is generated based on the first intermediate intensity value, the second intermediate intensity value, and the third intermediate intensity value.

Optionally, the determining unit 240 may be further configured to determine, as a target speed interval, a speed interval in which the speed information is in a pre-acquired speed and first intermediate intensity value comparison table, where the speed and first intermediate intensity value comparison table includes a plurality of speed intervals and intensity values corresponding to each speed interval; searching an intensity value corresponding to the target speed interval in the first intermediate intensity value comparison table as the first intermediate intensity value; the setting of the second intermediate intensity value based on the acceleration information comprises: acquiring an absolute value of the acceleration information, and determining the magnitude of the second intermediate intensity value based on the absolute value; if the acceleration information is positive, determining that the second intermediate intensity value is positive, wherein the positive acceleration information indicates that the vehicle is in acceleration; if the acceleration information is negative, determining that the second intermediate intensity value is negative, wherein the negative acceleration information indicates that the vehicle is in deceleration; the historical maintenance information includes a historical maintenance time, and the setting of the third intermediate intensity value based on the historical maintenance information includes: and setting the third intermediate intensity value based on a time difference between the historical maintenance time and the current time, wherein the time difference is positively correlated with the third intermediate intensity value.

Optionally, the determining unit 240 may be further configured to set the fourth intermediate intensity value to the first value if the time information is in a first period, where the first period is a period from sunrise to sunset; if the time information is in the second time period, setting the fourth intermediate intensity value as a second value, wherein the second time period is a time period from sunset to sunrise, and the second value is larger than the first value; if the weather information is rainy, setting a fifth intermediate intensity value as a third value; if the weather information is not rainy, setting the fifth intermediate intensity value as a fourth value, wherein the third value is larger than the fourth value; if the temperature information is smaller than or equal to the temperature threshold value, setting a sixth intermediate intensity value as a fifth value; if the temperature information is greater than the temperature threshold value, setting the sixth intermediate intensity value as a sixth value, wherein the fifth value is greater than the sixth value; the first intensity correction parameter is generated based on the fourth intermediate intensity value, the fifth intermediate intensity value, and the sixth intermediate intensity value.

Optionally, the determining unit 240 may be further configured to determine the third value based on a degree of rainfall if the weather information is raining, where the third value is positively related to the degree of rainfall;

Setting the fifth intermediate intensity value to the third value.

Optionally, the determining unit 240 may be further configured to obtain a difference between the temperature information and the temperature threshold if the temperature information is less than or equal to the temperature threshold; determining the fifth value based on the difference value, wherein the fifth value is positively correlated with the difference value; setting the sixth intermediate intensity value to a fifth value.

And the early warning unit 250 is used for controlling the laser zebra stripes based on the early warning intensity so as to early warn a driver of the vehicle.

Optionally, the early warning unit 250 may be further configured to determine a working mode and a luminous intensity of a laser zebra crossing corresponding to the early warning intensity based on a pre-acquired early warning intensity and a laser zebra crossing curve, where the early warning intensity and the laser zebra crossing curve are used for characterizing a correspondence between different early warning intensities and the working mode and the luminous intensity.

In addition, the technical effects of the laser zebra stripes early warning device 200 based on visible red light may refer to the technical effects of any of the foregoing methods, and will not be described herein.

In several embodiments provided by the present invention, the coupling of the elements to each other may be electrical, mechanical, or other. In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

It should be noted that, the laser zebra stripes early warning device based on visible red light and the control method thereof provided by the invention can be applied to an electronic device 300, fig. 3 shows a schematic block diagram of the electronic device 300 provided by the embodiment of the invention, the electronic device 300 includes a memory 302, a processor 301 and a communication interface 303, and the memory 302, the processor 301 and the communication interface 303 are directly or indirectly electrically connected to each other to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The processor 301 may be configured to execute the visible red light-based laser zebra crossing early warning device and the control method thereof provided in the above embodiments.

The memory 302 may be used for storing software programs and modules, such as program instructions or modules corresponding to the visible red light-based laser zebra crossing early warning device provided in the embodiments of the present invention, and the processor 301 executes the software programs and modules stored in the memory 302, thereby executing various functional applications and data processing, and further executing the steps of the visible red light-based laser zebra crossing early warning device and the control method thereof provided in the embodiments of the present invention. The communication interface 303 may be used for communication of signaling or data with other node devices.

The Memory 302 may be, but is not limited to, random access Memory (Random Access Memory, RAM), read Only Memory (ROM), programmable Read Only Memory (Programmable Read-Only Memory, PROM), erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable programmable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc.

The processor 301 may be an integrated circuit chip with signal processing capabilities. The processor 301 may be a general-purpose processor including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but also digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

It is to be understood that the configuration shown in fig. 3 is illustrative only, and that electronic device 300 may also include more or fewer components than shown in fig. 3, or have a different configuration than shown in fig. 3. The components shown in fig. 3 may be implemented in hardware, software, or a combination thereof.

Referring to fig. 4, a block diagram of a computer readable storage medium according to an embodiment of the invention is shown. The computer readable storage medium 400 has stored therein program code that can be invoked by a processor to perform the methods described in the method embodiments described above.

The computer readable storage medium 400 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. Optionally, the computer readable storage medium 400 comprises a non-volatile computer readable medium (non-transitory computer-readable storage medium). The computer readable storage medium 400 has storage space for program code 410 that performs any of the method steps described above. These program code 410 can be read from or written to one or more computer program products 500. Program code 410 may be compressed, for example, in a suitable form.

Referring to FIG. 5, a block diagram of a computer program product 500 according to an embodiment of the invention is shown. The computer program product 500 comprises a computer program/instruction 510, which computer program/instruction 510, when executed by a processor, implements the steps of the method described above.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present invention. The essence of the corresponding technical solutions is not driven to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The laser zebra stripes early warning control method based on visible red light is characterized by comprising the following steps of:

acquiring environment information of a target intersection provided with the laser zebra stripes, wherein the environment information comprises time information, weather information and temperature information;

acquiring first position information of pedestrians in a first range area, wherein the first range area comprises a pavement area around the target intersection and a pedestrian waiting area;

acquiring vehicle information of a vehicle in a second range area, wherein the vehicle information comprises speed information of the vehicle, acceleration information of the vehicle and history maintenance information of the vehicle;

Determining an early warning intensity based on the first location information, the environmental information, and the vehicle information;

and controlling the laser zebra stripes based on the early warning intensity to early warn the driver of the vehicle, wherein the early warning intensity is positively correlated with the intensity of controlling the laser zebra stripes to early warn the driver of the vehicle.

2. The method of claim 1, wherein the determining the pre-warning intensity based on the first location information, the environmental information, and the vehicle information comprises:

if the first position information is in the sidewalk area, determining that the initial early warning intensity is a first initial value;

if the first position information is in the pedestrian waiting area, determining that the initial early warning intensity is a second initial value, wherein the second initial value is smaller than the first initial value;

generating a first intensity correction parameter based on the environmental information;

generating a second intensity correction parameter based on the vehicle information;

and correcting the initial early warning intensity based on the first intensity correction parameter and the second intensity correction parameter to obtain the early warning intensity.

3. The method of claim 2, wherein generating the second intensity correction parameter based on the vehicle information comprises:

setting a first intermediate intensity value based on the speed information;

setting a second intermediate intensity value based on the acceleration information;

setting a third intermediate intensity value based on the historical maintenance information;

the second intensity correction parameter is generated based on the first intermediate intensity value, the second intermediate intensity value, and the third intermediate intensity value.

4. The method of claim 3, wherein the setting the first intermediate intensity value based on the speed information comprises:

determining a speed interval in which the speed information is in a pre-acquired speed and first intermediate intensity value comparison table as a target speed interval, wherein the speed and first intermediate intensity value comparison table comprises a plurality of speed intervals and intensity values corresponding to each speed interval;

searching an intensity value corresponding to the target speed interval in the first intermediate intensity value comparison table as the first intermediate intensity value;

The setting of the second intermediate intensity value based on the acceleration information comprises:

acquiring an absolute value of the acceleration information, and determining the magnitude of the second intermediate intensity value based on the absolute value;

if the acceleration information is positive, determining that the second intermediate intensity value is positive, wherein the positive acceleration information indicates that the vehicle is in acceleration;

if the acceleration information is negative, determining that the second intermediate intensity value is negative, wherein the negative acceleration information indicates that the vehicle is in deceleration;

the historical maintenance information includes a historical maintenance time, and the setting of the third intermediate intensity value based on the historical maintenance information includes:

and setting the third intermediate intensity value based on a time difference between the historical maintenance time and the current time, wherein the time difference is positively correlated with the third intermediate intensity value.

5. The method for controlling laser zebra crossing early warning based on visible red light according to claim 2, wherein the generating the first intensity correction parameter based on the environmental information comprises:

if the time information is in the first time period, setting a fourth intermediate intensity value as a first value, wherein the first time period is a time period from sunrise to sunset;

If the time information is in the second time period, setting the fourth intermediate intensity value as a second value, wherein the second time period is a time period from sunset to sunrise, and the second value is larger than the first value;

if the weather information is rainy, setting a fifth intermediate intensity value as a third value;

if the weather information is not rainy, setting the fifth intermediate intensity value as a fourth value, wherein the third value is larger than the fourth value;

if the temperature information is smaller than or equal to the temperature threshold value, setting a sixth intermediate intensity value as a fifth value;

if the temperature information is greater than the temperature threshold value, setting the sixth intermediate intensity value as a sixth value, wherein the fifth value is greater than the sixth value;

the first intensity correction parameter is generated based on the fourth intermediate intensity value, the fifth intermediate intensity value, and the sixth intermediate intensity value.

6. The method for controlling laser zebra crossing early warning based on visible red light according to claim 5, wherein if the weather information is rainy, setting a fifth intermediate intensity value as a third value comprises:

if the weather information is rainy, determining the third value based on the rainy degree, wherein the third value is positively correlated with the rainy degree;

Setting the fifth intermediate intensity value to the third value.

7. The method for controlling laser zebra crossing early warning based on visible red light according to claim 5, wherein if the temperature information is less than or equal to a temperature threshold, setting a sixth intermediate intensity value to be a fifth value comprises:

if the temperature information is smaller than or equal to a temperature threshold value, acquiring a difference value between the temperature information and the temperature threshold value;

determining the fifth value based on the difference value, wherein the fifth value is positively correlated with the difference value;

setting the sixth intermediate intensity value to a fifth value.

8. The method of claim 1, wherein the controlling the laser zebra stripes to pre-warn the driver of the vehicle based on the pre-warning intensity, wherein the pre-warning intensity is positively correlated with the intensity of controlling the laser zebra stripes to pre-warn the driver of the vehicle, comprises:

and determining the working mode and the luminous intensity of the laser zebra crossing corresponding to the early warning intensity based on the pre-acquired early warning intensity and laser zebra crossing curve, wherein the early warning intensity and the laser zebra crossing curve are used for representing the corresponding relation between different early warning intensities and the working mode and the luminous intensity.

9. Laser zebra stripes early warning equipment based on visible red light, characterized in that the equipment includes:

the first acquisition unit is used for acquiring environment information of a target intersection provided with the laser zebra stripes, wherein the environment information comprises time information, weather information and temperature information;

a second acquiring unit configured to acquire first position information of a pedestrian in a first range area including a sidewalk area around the target intersection and a pedestrian waiting area;

a third acquisition unit configured to acquire vehicle information of a vehicle in the second range area, the vehicle information including speed information of the vehicle, acceleration information of the vehicle, and history maintenance information of the vehicle;

a determining unit configured to determine an early warning intensity based on the first location information, the environment information, and the vehicle information;

and the early warning unit is used for controlling the laser zebra crossing based on the early warning intensity so as to early warn the driver of the vehicle, wherein the early warning intensity is positively correlated with the intensity for controlling the laser zebra crossing so as to early warn the driver of the vehicle.