Signal lamp control method and system, signal lamp device and storage medium

Abstract

The invention relates to the technical field of intelligent traffic, and discloses a signal lamp control method and system, a signal lamp device and a storage medium, the signal lamp control method is applied to the signal lamp device, the signal lamp device is in communication connection with vibration feedback equipment arranged at two ends of a zebra crossing, and the signal lamp control method comprises the following steps: obtaining pedestrian information at an intersection, determining the time when the pedestrian arrives at the intersection according to the pedestrian information, and starting to display green light countdown when the time is preset time; dynamically adjusting the green light display duration according to the intersection type of the intersection and the pedestrian information; and under the condition that the position of the special pedestrian is at any end of the zebra crossing, a control instruction is sent to vibration feedback equipment, so that the vibration feedback equipment provides a corresponding vibration mode for the special pedestrian. The green light display duration is dynamically adjusted according to the real-time pedestrian information and the intersection type, the intersection passing efficiency is improved, and the travel convenience of special crowds is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent transportation, and in particular to a signal lamp control method and system, a signal lamp device, and a storage medium. BACKGROUND

[0002] Traffic signal lamps are light indicating devices installed at road intersections. Traditional signal lamps use fixed timing (such as a fixed green light display time of 20 seconds), which cannot be dynamically adjusted according to pedestrian flow, resulting in low traffic efficiency during peak hours. Existing signal lamps rely on cameras and infrared sensors, and have a high false detection rate in heavy rain and fog. Most signal lamps rely on mains power supply and have no low-carbon self-circulation capability, which cannot guarantee the safety of special pedestrians. SUMMARY

[0003] Therefore, the embodiments of the present application provide a signal lamp control method, system, device and storage medium, which can effectively solve the problems of rigid timing of traditional traffic signal devices and lack of service for special groups.

[0004] In a first aspect, the embodiments of the present application provide a signal lamp control method applied to a signal lamp device, wherein the signal lamp device is in communication connection with vibration feedback equipment arranged at both ends of a zebra crossing. The method comprises the following steps: obtaining pedestrian information of a road intersection where the signal lamp device is located in real time; determining a time when pedestrians arrive at the road intersection according to the pedestrian information, and starting to display a green light countdown under the condition that the time is a preset time; dynamically adjusting a green light display time according to a road intersection type of the road intersection and the pedestrian information; in a case where a special pedestrian is at any end of the zebra crossing, sending a control instruction to the vibration feedback equipment to make the vibration feedback equipment provide a vibration mode corresponding to a current signal lamp state to the special pedestrian according to the control instruction.

[0005] In a first possible embodiment of the first aspect, the signal lamp device is provided with multiple sensors, and a pressure sensor is laid in an area where the zebra crossing is located. The real-time acquisition of the pedestrian information of the road intersection where the signal lamp device is located comprises the following steps: acquiring sensor data collected by the multiple sensors and the pressure sensor, filtering out interference data in the sensor data by a filtering algorithm, and determining the pedestrian information by using the filtered data, wherein the pedestrian information includes pedestrian speed, pedestrian flow, pedestrian type and pedestrian position.

[0006] In a second possible embodiment of the first aspect, the dynamically adjusting of the green light display time according to the road intersection type of the road intersection and the pedestrian information comprises the following steps: calculating the green light display duration of the current direction of the intersection in real time based on a signal duration calculation formula, to control green light display based on the green light display duration; In the case where the special pedestrian fails to pass the zebra crossing, the green light display duration is extended until the special pedestrian passes the zebra crossing.

[0007] In a third possible implementation of the first aspect, the signal duration calculation formula is calculated as follows:

[0008] wherein, denotes the green light display duration of the current direction of the intersection, denotes a basic green light duration, denotes a preset traffic coefficient, different intersection types correspond to different preset traffic coefficients, denotes the pedestrian traffic of the current direction of the intersection.

[0009] In a fourth possible implementation of the first aspect, the zebra crossing is provided with an energy conversion device, and the signal lamp device is provided with a solar power generation device and an energy storage device, and the method further comprises: storing the electrical energy obtained from the energy conversion device and the solar power generation device in the energy storage device; in the case where there is no pedestrian and vehicle within a preset range from the intersection, the signal lamp device is in a standby state.

[0010] In a fifth possible implementation of the first aspect, the signal lamp device is provided with a directional sound wave device, and the method further comprises: acquiring vehicle information of the intersection where the signal lamp device is located in real time; in the case where the distance between the pedestrian and the target vehicle is detected to be less than a preset distance, controlling the directional sound wave device to send directional sound waves to the target vehicle.

[0011] In a sixth possible implementation of the first aspect, the plurality of sensors include a millimeter wave radar and a thermal imaging sensor.

[0012] In a second aspect, the embodiments of the present application provide a signal lamp control system, comprising: a signal lamp device and a vibration feedback device arranged at both ends of a zebra crossing, wherein the signal lamp device is in communication connection with the vibration feedback device; The signal lamp device is configured to acquire pedestrian information of the intersection where the signal lamp device is located in real time. The signal lamp device is further configured to determine the time when a pedestrian arrives at the intersection according to the pedestrian information, and start to display a green light countdown under the condition that the time is a preset time. The signal lamp device is further configured to dynamically adjust a green light display duration according to the intersection type of the intersection and the pedestrian information. The signal lamp device is further configured to send a control instruction to the vibration feedback device when the position of the special pedestrian is at any end of the zebra crossing. The vibration feedback device is configured to provide a vibration mode corresponding to a current signal light state to the special pedestrian according to the control instruction.

[0013] In a third aspect, an embodiment of the present application provides a signal lamp device, which comprises a processor and a memory, the memory stores a computer program, and the processor is configured to execute the computer program to implement the signal lamp control method described above.

[0014] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the computer program is configured to implement the signal lamp control method described above when executed on a processor.

[0015] The embodiments of the present application have the following beneficial effects: The signal lamp control method of the embodiment is applied to a signal lamp device, the signal lamp device is in communication connection with vibration feedback devices arranged at two ends of a zebra crossing, and the signal lamp control method comprises the following steps: obtaining pedestrian information of an intersection, determining a time for pedestrians to arrive at the intersection according to the pedestrian information, and starting to display a green light countdown when the time is a preset time; dynamically adjusting a green light display duration according to an intersection type of the intersection and the pedestrian information; and sending a control instruction to the vibration feedback device when a position of a special pedestrian is at any end of the zebra crossing, so that the vibration feedback device provides a corresponding vibration mode to the special pedestrian. The present application dynamically adjusts the green light display duration according to real-time pedestrian information and intersection types, improves intersection passing efficiency, pays special attention to the needs of special groups, improves the travel convenience of special groups, displays the green light countdown in advance, and reduces the anxiety of pedestrians waiting. The present application is suitable for urban renewal, automatic driving cooperation and barrier-free city construction. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0017] Figure 1 A structural schematic diagram of a signal lamp device according to an embodiment of the present application is shown; Figure 2 A first flowchart of a signal lamp control method according to an embodiment of the present application is shown. Figure 3 Fig. 2 shows a second flow diagram of a signal lamp control method according to an embodiment of the present application; Figure 4 Fig. 3 shows a structural diagram of a signal lamp control system according to an embodiment of the present application.

[0018] Main component symbol explanation: 100 - signal lamp device; 110 - processor; 120 - memory; 130 - millimeter wave radar; 140 - thermal imaging sensor; 300 - signal lamp control system; 310 - vibration feedback device; 320 - pressure sensor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0020] The components of the embodiments of the present application generally described and illustrated herein can be arranged and designed in a wide variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0021] Hereinafter, the terms "include", "have", and their conjugates used in the various embodiments of the present application are only intended to denote that specific features, numbers, steps, operations, elements, components, or combinations thereof are present, and should not be construed as excluding the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof. In addition, the terms "first", "second", "third", and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0022] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present application belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of the present application.

[0023] Some embodiments of the present application will be described in detail with reference to the drawings. The following examples and features in the examples can be combined with each other in the case of no conflict.

[0024] First, the signal lamp device 100 provided by the embodiments of the present application is described with reference to Figure 1 The structural schematic diagram of the signal lamp device 100 provided by the embodiments of the present application is shown in FIG. 1. The signal lamp device 100 includes a processor 110 and a memory 120. The memory 120 stores a computer program. The memory 120 and the processor 110 can be directly or indirectly electrically connected with a communication interface to realize data transmission and interaction.

[0025] In an embodiment, the signal lamp device 100 is provided with multiple sensors. A pressure sensor 320 is arranged in the area where the zebra crossing is located. The processor 110 is communicatively connected with the multiple sensors and the pressure sensor 320 to obtain sensor data collected by the multiple sensors and the pressure sensor 320.

[0026] The pedestrian information includes pedestrian speed, pedestrian flow, pedestrian type and pedestrian position. The pedestrian speed is the speed of all pedestrians detected in the measurement range of the sensor. The pedestrian flow is the average flow of pedestrians in the measurement range of the sensor. The pedestrian type can include special pedestrians and normal pedestrians. In the present application, the special pedestrians include but are not limited to visually impaired persons, the elderly, and the disabled. The pedestrian position is the position of the pedestrian on the road or the zebra crossing.

[0027] In the present embodiment, the signal lamp device 100 can be provided with multiple sensors, including but not limited to a millimeter wave radar 130 and a thermal imaging sensor 140. The millimeter wave radar 130 is used to detect the pedestrian speed, pedestrian position, vehicle position, motion trajectory and pedestrian flow around the intersection. The thermal imaging sensor 140 is used to detect the pedestrian contour and type information. Through the distribution of thermal radiation, the thermal imaging sensor 140 can distinguish living targets and exclude the interference of non-living objects. The pressure sensor 320 is embedded in the ground surface of the zebra crossing area to sense the stepping action and distribution density of pedestrians, which can be used as an auxiliary verification means to confirm the actual existence of pedestrians.

[0028] In an embodiment, the present application adopts a hardware-level redundancy mechanism to set a main sensor and a backup sensor. When the main sensor fails, the backup sensor quickly takes over its function to ensure continuous operation of the system. For example, when the main millimeter laser radar fails, the backup millimeter laser radar is automatically activated and starts collecting pedestrian information.

[0029] In an embodiment, the signal lamp device 100 is communicatively connected with the vibration feedback device 310 arranged at both ends of the zebra crossing, and the processor 110 can process information and / or data related to the signal lamp control method to perform one or more functions described in the present application. For example, the processor 110 can obtain pedestrian information of the intersection where the signal lamp device is located in real time; determine the time for pedestrians to arrive at the intersection according to the pedestrian information, and start to display the green light countdown under the condition that the time is the preset time; dynamically adjust the green light display time according to the intersection type and the pedestrian information of the intersection; in the case that the position of the special pedestrian is at any end of the zebra crossing, send a control instruction to the vibration feedback device 310, so that the vibration feedback device 310 provides the special pedestrian with a vibration mode corresponding to the current signal lamp state according to the control instruction. Further, the signal lamp device 100 can display the green light countdown in advance according to the pedestrian information, dynamically adjust the green light display time, and timely remind the special group of the current green light state, thereby improving the urban traffic efficiency and pedestrian safety.

[0030] The processor can be an integrated circuit chip with a processing capability of signals. The processor can be a general processor, including a central processing unit (CPU), a graphics processing unit (GPU), and a network processor (NP), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, a discrete gate or transistor logic device, a discrete hardware component, or at least one of the above. The general processor can be a microprocessor or the processor can be any conventional processor or the like, and can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application.

[0031] The memory can be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (EPROM), an electrically erasable programmable read only memory (EEPROM), etc. The memory is used to store a computer program, and the processor can execute the computer program accordingly after receiving an execution instruction.

[0032] In the following, in order to facilitate understanding, the following embodiments of the present application will be describedFigure 1 The signal lamp device 100 is shown as an example, and the signal lamp control method provided by the embodiment of the present application is described in conjunction with FIG. 1.

[0033] Please refer to Figure 2 , Figure 2 A flowchart of the signal lamp control method provided by the embodiment of the present application is shown. The signal lamp control method can be applied to the signal lamp device 100 described above, and the signal lamp control method includes the following steps: S210, real-time acquisition of pedestrian information of the intersection where the signal lamp device is located.

[0034] In an embodiment, the present application filters out interference data in the sensor data by using a filtering algorithm, so as to determine the pedestrian information by using the filtered data. In the embodiment, the present application filters out the interference data by using a Kalman filtering algorithm. The Kalman filtering algorithm is a recursive filter, which gradually optimizes the estimated value and reduces the noise influence through prediction and update steps. In the present application, the Kalman filtering algorithm performs weighted fusion on the data of the above three sensors and gives different confidence weights. For example, under normal circumstances, the millimeter wave radar 130 is good at speed and trajectory measurement, and has a high weight; the thermal imaging sensor 140 is good at target classification and contour recognition, and has a moderate weight; the pressure sensor 320 is good at confirming the stepping action, and has a low weight, and is only used as an auxiliary verification. The present application compares the data of multiple sensors to identify abnormal signals, i.e. interference data, such as interference targets caused by falling leaves. For example, if the millimeter wave radar 130 detects a moving target, but the thermal imaging sensor 140 does not find a corresponding living contour, and the pressure sensor 320 has no stepping signal, it can be determined that the data is interference data. It can be understood that the present application provides a signal lamp device 100 with multi-modal sensor fusion. Through multi-modal sensor fusion, the advantages of each sensor are fully utilized and the deficiencies are mutually compensated, so as to realize high-precision pedestrian detection and break through the detection bottleneck in bad environments such as rain and snow. For example, the stability of the pressure sensor 320 in the rain and snow environment provides an important auxiliary verification means for the millimeter wave radar 130 and the thermal imaging sensor 140.

[0035] In an embodiment, the zebra crossing area is provided with an energy conversion device, the signal lamp device 100 is provided with a solar power generation device and an energy storage device, and the signal lamp device 100 stores the electrical energy obtained from the energy conversion device and the solar power generation device in the energy storage device.

[0036] In this embodiment, the energy conversion device is used to convert the mechanical energy generated by pedestrians walking in the zebra crossing area into electrical energy. When pedestrians step, the energy conversion device generates a weak current, which is stored in the energy storage device for subsequent use. The solar power generation device is used to convert solar energy into direct current electrical energy, which can be installed on the top of the signal lamp device 100 or other well-lit locations. This application uses supercapacitors as energy storage devices, which have high energy density and fast charging and discharging capabilities. The energy storage device is used to store the electrical energy generated by the energy conversion device and the solar power generation device, and to power the system in the absence of external energy input at night or on rainy days.

[0037] In an embodiment, this application uses piezoelectric film as pressure sensor 320 and energy conversion device, which realizes pressure sensing function and pressure to electricity function at the same time. This application lays piezoelectric film under the ground surface of zebra crossing to form a large area of pressure sensing area, which not only facilitates construction, but also effectively protects piezoelectric film from external environment (such as rain erosion or vehicle rolling), realizes comprehensive coverage of the entire zebra crossing area, and ensures no blind area detection. S220, determining the time when the pedestrian reaches the intersection according to the pedestrian information, and starting to display the green light countdown under the condition that the time is the preset time.

[0038] In an embodiment, this application can determine the time when the pedestrian reaches the intersection according to the pedestrian distance and the pedestrian speed. The formula for calculating the time when the pedestrian reaches the intersection is:

[0039] Among them, T represents the time when the pedestrian reaches the intersection, D represents the distance between the pedestrian and the two ends of the zebra crossing, i.e. the distance between the pedestrian and the nearest end of the zebra crossing, is the average speed of the pedestrian.

[0040] In this embodiment, when it is detected that the time when the pedestrian reaches the intersection is equal to the preset time, the current green light countdown is displayed in advance, and the pedestrian can see the green light countdown in advance, reducing the anxiety of the pedestrian. The pedestrian will reach the intersection in 3 seconds, and the remaining time of the red light is 5 seconds. The signal lamp device 100 starts to display the green light countdown of 5 seconds.

[0041] S230, dynamically adjusting the green light display time according to the intersection type of the intersection and the pedestrian information; In this embodiment, the intersection where the signal lamp device 100 is located is a crossroad combined with different branches and trunks. Different types of intersections have different traffic coefficients. The intersection types from high to low traffic coefficients include: branch and branch > branch and secondary trunk > branch and main trunk > secondary trunk and secondary trunk > secondary trunk and main trunk > main trunk and main trunk. The traffic coefficient of branch and branch is the largest, indicating that this type of intersection needs more green light time to prioritize pedestrian demand. The traffic coefficient of main trunk and main trunk is the smallest, indicating that this type of intersection mainly focuses on vehicle traffic, and the pedestrian green light time is relatively small. For example, the traffic coefficient of the branch and branch intersection is 1.2, and the traffic coefficient of the main trunk and main trunk intersection is 0.5.

[0042] In an embodiment, as shown in FIG. 1, the application adjusts the green light display duration, including the following steps: Figure 3 S231, calculating the green light display duration of the current direction of the intersection in real time based on the signal duration calculation formula, and displaying the green light based on the calculated green light display duration.

[0043] In an embodiment, the calculation formula of the signal duration calculation formula is:

[0044] wherein, represents the green light display duration of the current direction of the intersection, represents the basic green light duration, which is a fixed minimum value, ensuring that the signal lamp device 100 will give pedestrians a certain passage time even if there are no pedestrians. represents the preset traffic coefficient, which determines the degree of influence of the number of pedestrians on the green light duration. represents the pedestrian traffic of the current direction of the intersection, wherein the intersection direction includes straight, left turn and right turn. For example, during peak hours, the pedestrian traffic of the straight direction of the intersection reaches 50 people per minute, and the pedestrian traffic is dynamically changing.

[0045] It can be understood that the application automatically adjusts the green light display duration according to the pedestrian traffic, avoiding the rigid problem of the traditional fixed timing scheme. The application takes into account the needs of different types of intersections, with branch and branch intersections prioritizing pedestrian traffic and main trunk and main trunk intersections focusing more on vehicle traffic efficiency. The above-mentioned method can quickly respond to changes in pedestrian traffic during peak hours, reducing pedestrian waiting time, and avoiding excessive green light time during low peak hours, which can cause vehicle delays and improve overall traffic efficiency. S232, in the case that the special pedestrian fails to pass the zebra crossing, the green light display duration is extended until the special pedestrian passes the zebra crossing.

[0046] ​In this embodiment, when a special pedestrian is detected to enter the zebra crossing area, the dynamic green light extension mechanism is immediately started, and the application dynamically calculates the time required to pass the zebra crossing according to the position and speed of the special pedestrian. If the required time is greater than the remaining green light time, the green light display time is extended to ensure that the special pedestrian has enough time to safely pass the zebra crossing. When the special pedestrian completely leaves the zebra crossing area, the signal lamp device 100 restores the normal signal lamp control logic.

[0047] S240, in the case that the position of the special pedestrian is at any end of the zebra crossing, a control instruction is sent to the vibration feedback device 310 to make the vibration feedback device 310 provide the special pedestrian with a vibration mode corresponding to the current signal lamp state according to the control instruction.

[0048] In this embodiment, any end of the zebra crossing is the starting or ending position of the pedestrian entering the zebra crossing. The application lays vibration feedback devices 310 at the starting and ending positions of the zebra crossing and monitors the position information of the visually impaired person in real time. In the case that the position of the visually impaired person is at any end of the zebra crossing, the vibration feedback device 310 provides a vibration mode corresponding to the current signal lamp state. For example, the vibration mode can be long vibration within a certain time interval, indicating a green light state, and short vibration within a certain time interval, indicating a red light state. In an embodiment, the millimeter wave radar 130 is also used to monitor the vehicle position information around the intersection. In the case that there is no pedestrian and vehicle within a preset range from the intersection, the signal lamp device 100 is in standby state. In standby state, the LED brightness of the signal lamp device 100 is reduced to 10%, maintaining standby function, and still retaining low-power sensors working in order to respond to potential targets in time. The preset range can be flexibly set according to actual application scenarios, for example, the preset range is a circular area with a certain radius centered on the intersection.

[0049] In an embodiment, the signal lamp device 100 is provided with a directional sound wave device. The application acquires vehicle information of the intersection where the signal lamp device is located in real time. In the case that the distance between the pedestrian and the target vehicle is less than the preset distance, the directional sound wave device is controlled to send a directional sound wave warning to the target vehicle direction. The preset distance can be the shortest safe distance between the vehicle and the pedestrian.

[0050] In this embodiment, the signal lamp device 100 can monitor the position, speed and direction of the vehicle and other vehicle information through the millimeter wave radar 130, judge the distance between the pedestrian and the target vehicle according to the pedestrian information and vehicle information, and the directional sound wave device can propagate the sound wave warning to the target vehicle direction, which can significantly reduce the sound wave diffusion range, and ensure that the sound wave warning only reaches the target vehicle or a specific area of the target vehicle, such as the driver nearby. The preset distance can be set according to actual conditions, which is not limited here.

[0051] In an embodiment, the sound wave device of the present application can be an ultrasonic speaker, which focuses sound waves by using a parabolic reflector, compresses the ultrasonic waves into a narrow beam, and propagates them in the direction of the target vehicle, ensuring that the warning voice is only transmitted to the direction of the vehicle driver, avoiding interference from the pedestrian side. In an embodiment, the present application also acquires environmental information of the intersection where the signal lamp device 100 is located in real time; in the case of detecting abnormal environmental information, the corresponding variable information sign is displayed. In this embodiment, the variable information sign (VMS) is a dynamic display of text, icons or arrow forms of information, which transmits real-time road conditions, weather conditions, safety prompts or other related instructions to pedestrians.

[0052] In an embodiment, the present application acquires environmental information (such as rainfall, visibility, etc.) in real time through a weather monitoring module, which is used to determine whether the current is in an abnormal weather state. The signal lamp device 100 is used to automatically trigger the corresponding safety mode according to the data provided by the weather monitoring module, and generate control instructions sent to related devices. For example, under the condition of heavy rain, the flashing mode of the fog lamp is started, and the high-frequency flashing of the fog lamp is displayed to enhance the warning effect and remind pedestrians and vehicles to pay attention to safety. When the visibility is less than 50 meters, the VMS is linked to issue lane closure warning information to guide vehicles to choose other routes.

[0053] The present application also provides a signal lamp control system 300. It should be noted that the basic principle and technical effects of the signal lamp control system 300 provided in this embodiment are the same as those of the above-mentioned method embodiments. For brief description, the part not mentioned in this embodiment can refer to the corresponding content in the above-mentioned embodiments. As shown in the figure, the signal lamp control system 300 includes a signal lamp device 100 and a vibration feedback device 310 and a pressure sensor 320 arranged at both ends of the zebra crossing. Figure 4 The signal lamp device 100 is used to acquire pedestrian information of the intersection where the signal lamp device is located in real time. The signal lamp device 100 is used to acquire pedestrian information of the intersection where the signal lamp device is located in real time.

[0054] The signal lamp device 100 is also used to determine the time of pedestrians arriving at the intersection according to the pedestrian information, and start to display the green light countdown under the condition that the time is the preset time.

[0055] The signal lamp device 100 is also used to dynamically adjust the display duration of the green light according to the type of the intersection and the pedestrian information.

[0056] The signal lamp device 100 is also used to send control instructions to the vibration feedback device 310 in the case that the position of the special pedestrian is at any end of the zebra crossing.

[0057] The vibration feedback device 310 is used to provide vibration information corresponding to the current signal lamp state to the special pedestrian according to the control instruction.

[0058] The application further provides a computer readable storage medium for storing the computer program used in the signal lamp Zhuangzi.

[0059] In several embodiments provided in the application, it should be understood that the disclosed apparatus and method can also be implemented by other manners. The apparatus embodiments described above are only schematic, for example, the flow chart and structure chart in the drawings show the possible implementation architecture, function and operation of the apparatus, method and computer program product according to the embodiments of the application. In this regard, each block in the flow chart or structure chart can represent a module, a program segment or a part of code, which contains one or more executable instructions for implementing the specified logic function. It should also be noted that, in alternative implementation manners, the functions noted in the blocks can also occur in different order from that noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. It should also be noted that each block in the structure chart and / or flow chart, and the combination of blocks in the structure chart and / or flow chart, can be implemented by a dedicated hardware-based system for executing the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0060] In addition, the functional modules or units in each embodiment of the application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0061] If the functions are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the application.

[0062] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A traffic light control method, characterized in that, The method, applied to a traffic light device that is communicatively connected to vibration feedback devices located at both ends of a zebra crossing, includes: Real-time acquisition of pedestrian information at the intersection where the traffic light device is located; Based on the pedestrian information, determine the time when the pedestrian arrives at the intersection, and start displaying the green light countdown when the time is a preset time; The green light display duration is dynamically adjusted based on the intersection type and pedestrian information. When a pedestrian is located at any end of the zebra crossing, a control command is sent to the vibration feedback device so that the vibration feedback device provides the pedestrian with the vibration mode corresponding to the current traffic light status according to the control command.

2. The traffic light control method according to claim 1, characterized in that, The traffic light device is equipped with multiple sensors, and pressure sensors are laid in the area where the zebra crossing is located. The real-time acquisition of pedestrian information at the intersection where the traffic light device is located includes: Sensor data collected by various sensors and the pressure sensor are acquired, and interference data in the sensor data is filtered out by a filtering algorithm. The filtered data is then used to determine the pedestrian information, which includes pedestrian speed, pedestrian flow, pedestrian type, and pedestrian location.

3. The traffic light control method according to claim 2, characterized in that, The method of dynamically adjusting the green light display duration based on the intersection type and pedestrian information includes: The green light display duration for the current direction at the intersection is calculated in real time based on the signal duration calculation formula, and the green light display is controlled based on the green light display duration. If the pedestrian fails to cross the zebra crossing, the green light duration shall be extended until the pedestrian crosses the zebra crossing.

4. The traffic light control method according to claim 3, characterized in that, The formula for calculating the signal duration is as follows: in, This indicates the duration of the green light display for the current direction at the intersection. Indicates the basic green light duration. This represents a preset traffic flow coefficient; different intersection types correspond to different preset traffic flow coefficients. This indicates the pedestrian flow in the current direction at the intersection.

5. The traffic light control method according to claim 1, characterized in that, The zebra crossing area is equipped with an energy conversion device, the traffic light device is equipped with a solar power generation device and an energy storage device, and the method further includes: The electrical energy obtained from the energy conversion device and the solar power generation device is stored in the energy storage device; When there are no pedestrians or vehicles within a preset range of the intersection, the traffic light device will be put into standby mode.

6. The traffic light control method according to claim 1, characterized in that, The signal light device is equipped with a directional sound wave device, and the method further includes: Real-time vehicle information is obtained at the intersection where the traffic light device is located; If the distance between a pedestrian and a target vehicle is detected to be less than a preset distance, the directional acoustic device is controlled to send a directional acoustic warning in the direction of the target vehicle.

7. The traffic light control method according to claim 2, characterized in that, The various sensors mentioned include millimeter-wave radar and thermal imaging sensors.

8. A traffic light control system, characterized in that, include: The system includes a traffic light device and vibration feedback devices installed at both ends of the zebra crossing, wherein the traffic light device is communicatively connected to the vibration feedback devices; The traffic light device is used to acquire pedestrian information at the intersection where the traffic light device is located in real time; The traffic light device is also used to determine the time when a pedestrian arrives at the intersection based on the pedestrian information, and to start displaying a green light countdown when the time is a preset time. The traffic light device is also used to dynamically adjust the green light display duration according to the intersection type and pedestrian information; The signal light device is also used to send control commands to the vibration feedback device when a special pedestrian is located at any end of the zebra crossing; The vibration feedback device is used to provide the special pedestrian with the vibration mode corresponding to the current traffic light status according to the control command.

9. A signal light device, characterized in that, The traffic light device includes a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the traffic light control method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed on a processor, implements the traffic light control method according to any one of claims 1-7.

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