CN111798665A - Road system - Google Patents
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- CN111798665A CN111798665A CN202010945352.XA CN202010945352A CN111798665A CN 111798665 A CN111798665 A CN 111798665A CN 202010945352 A CN202010945352 A CN 202010945352A CN 111798665 A CN111798665 A CN 111798665A
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- edge computing
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- computing gateway
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
The application discloses a road system, which comprises road side equipment, an edge computing gateway and a cloud platform; the road side equipment is used for acquiring road condition data of a target road section and uploading the road condition data to the edge computing gateway; the edge computing gateway is used for receiving the road condition data uploaded by the road side equipment, analyzing the road condition data and uploading an analysis result to the cloud platform; the cloud platform is used for receiving the analysis result uploaded by the edge computing gateway and issuing a control instruction to the edge computing gateway according to the analysis result, wherein the control instruction is used for instructing the edge computing gateway to control the road side equipment. By the scheme, stable and reliable edge calculation can be deployed on the road.
Description
Technical Field
The application belongs to the technical field of edge computing, and particularly relates to a road system.
Background
Edge computing is a research field which starts to rise in recent years, and is an open platform which integrates network, computing, storage and application core capabilities at the edge side of a network terminal close to an object or a data source. At present, how to deploy edge calculation on roads, especially photovoltaic roads, is still a difficult problem.
Disclosure of Invention
In view of this, the present application provides a road system, which can implement stable and reliable edge calculation deployed on a road.
The application provides a road system, including:
the system comprises road side equipment, an edge computing gateway and a cloud platform;
the road side equipment is used for acquiring road condition data of a target road section and uploading the road condition data to the edge computing gateway;
the edge computing gateway is used for receiving the road condition data uploaded by the road side equipment, analyzing the road condition data and uploading an analysis result to the cloud platform;
the cloud platform is used for receiving the analysis result uploaded by the edge computing gateway and issuing a control instruction to the edge computing gateway according to the analysis result, wherein the control instruction is used for instructing the edge computing gateway to control the roadside device.
As can be seen from the above, the road system in the present application includes a roadside device, an edge computing gateway, and a cloud platform, where the roadside device is configured to collect road condition data of a target road segment and upload the road condition data to the edge computing gateway; the edge computing gateway is used for receiving the road condition data uploaded by the road side equipment, analyzing the road condition data and uploading an analysis result to the cloud platform; the cloud platform is used for receiving the analysis result uploaded by the edge computing gateway and issuing a control instruction to the edge computing gateway according to the analysis result, wherein the control instruction is used for instructing the edge computing gateway to control the roadside device. According to the scheme, the edge computing gateways arranged on the target road section serve as edge computing nodes and are respectively communicated with the cloud platform and the road side equipment arranged on the target road section, so that the cloud platform controls the edge computing gateways, and the edge computing gateways control the road side equipment, and therefore stable and reliable edge computing is deployed on the road.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is an architectural diagram of a roadway system provided in an embodiment of the present application;
FIG. 2 is a diagram of a communication networking provided by an embodiment of the present application;
FIG. 3 is an exemplary diagram of a roadway system provided by an embodiment of the present application;
FIG. 4 is a diagram of device connection relationships over a road segment according to an embodiment of the present application;
fig. 5 is a diagram of a device connection relationship on another road segment according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
In order to explain the technical solution of the present application, the following description will be given by way of specific examples.
The embodiment of the present application provides a road system, and the following explains and explains the structure of the road system, please refer to fig. 1, and fig. 1 shows the architecture diagram of the road system:
the road system comprises road side equipment, an edge computing gateway and a cloud platform. The road side equipment and the cloud platform are connected with the edge computing gateway, so that the edge computing gateway can respectively interact with the road side equipment and the cloud platform. Alternatively, the connection may be a wireless connection or a wired connection, and the connection manner is not limited herein. It should be noted that the road system shown in fig. 1 is only an example, and in practical applications, the road system may include one or more than two edge computing gateways, and likewise, may also include one or more than two roadside devices, where the number of edge computing gateways and the number of roadside devices are not limited herein. Specifically, the road may be divided into a plurality of road segments, each of the road segments is provided with an edge computing gateway and a roadside device, and for convenience of description, any one of the road segments is taken as an example, and the road segment is the target road segment. With respect to fig. 1, it can be understood that a road is divided into three sections, each section is provided with an edge computing gateway and a road side device, and the edge computing gateway on each section is respectively connected with a cloud platform and the road side device on the section.
Specifically, the road side equipment is used for acquiring road condition data of a target road section and uploading the road condition data to the edge computing gateway;
the edge computing gateway is used for receiving road condition data uploaded by the road side equipment, analyzing the road condition data and uploading an analysis result to the cloud platform;
the cloud platform is used for receiving the analysis result uploaded by the edge computing gateway and issuing a control instruction to the edge computing gateway according to the analysis result.
In this embodiment, the roadside device is disposed on the target road segment, and may collect road condition data of the target road segment, and upload the collected road condition data to the edge computing gateway disposed on the target road segment, where the road condition data is data related to the target road segment. The edge computing gateway can receive road condition data uploaded by the road side equipment, analyze the received road condition data, and upload an analysis result obtained by analysis to the cloud platform. The cloud platform can receive the analysis result uploaded by the edge computing gateway and then issue a control instruction to the edge computing gateway according to the analysis result. After receiving the control instruction, the edge computing gateway controls the road side device.
Optionally, the roadside apparatus may include:
the signal lamp is used for displaying traffic lights;
the signal machine is used for controlling the signal lamp according to the signal timing information and sending the signal timing information to the edge computing gateway;
and the edge computing gateway is specifically used for judging whether the current time belongs to the green light time period of the signal lamp or not according to the signal timing information, and controlling the pedestrian crossing light-emitting marking line arranged on the target road section to emit light with a preset color if the current time belongs to the green light time period.
In the embodiment of the present application, if the traffic flow of the target road segment is large, for example, the target road segment is a road segment including an intersection, a signal lamp for performing traffic light display may be provided in the target road segment in consideration of relieving traffic pressure. The signal light may be a signal light of a crosswalk of the target road segment for indicating whether a pedestrian can pass through the crosswalk. Still be provided with the semaphore on the target road section, for example this semaphore can set up 2 meters within ranges around the lamp pole of signal lamp, with signal lamp wired connection. The signal machine is internally stored with signal configuration information, and the signal timing information is used for indicating the time ratio of the signal lamp to display the red light and the green light. The signal machine can know which time the signal lamp is controlled to display the red light and which time the signal lamp is controlled to display the green light according to the signal timing information, and then the signal lamp is controlled according to the signal timing information. Optionally, the signal machine may be in wired connection with the edge computing gateway, the signal machine may send the signal configuration information to the edge computing gateway, and the edge computing gateway may determine whether the current time belongs to the green time period of the signal lamp only according to the signal timing information. If the current time belongs to the green light time interval, the pedestrian crossing light-emitting marked line arranged on the target road section is controlled to emit light with a preset color, for example, green light is emitted, and the pedestrian crossing light-emitting marked line emits green light, so that the pedestrian can pass through the pedestrian crossing at the moment. Optionally, the edge computing gateway may further determine whether the current time belongs to a red light time period of the signal lamp according to the signal timing information, and if the current time belongs to the red light time period, control the pedestrian crossing light-emitting marking line arranged on the target road segment to emit red light, and if the pedestrian crossing light-emitting marking line emits red light, it indicates that a pedestrian cannot pass through the pedestrian crossing at this time. Optionally, to further ensure the safety of the pedestrian, the pedestrian crossing light-emitting marking line arranged on the target road section may be controlled to emit red light when the time length from the current time to the start time of the red light time interval is a preset time length threshold value, and the pedestrian crossing light-emitting marking line is controlled not to stop emitting red light until the end time of the red light time interval
Optionally, the roadside apparatus may further include:
a Road Side Unit (RSU) device for performing information interaction with a vehicle on a target Road section;
the edge computing gateway is further specifically configured to determine whether the current time belongs to a green time period of the signal lamp according to the signal timing information, and send a slowdown prompting message to vehicles in a preset range of the target road segment through the RSU device if the current time belongs to the green time period.
In this embodiment of the application, the roadside device further includes an RSU device, and the RSU device may communicate with an On Board Unit (OBU) On a vehicle by using a dsrc (dedicatedsort Range communication) technology, so as to implement information interaction with a vehicle passing through a target road segment. Optionally, the edge computing gateway may be connected to the RSU device by a wire, and if the edge computing gateway determines that the current time belongs to the green light time period according to the signal timing information, it indicates that there may be a pedestrian on the pedestrian crossing, and at this time, a slow-moving prompt message may be sent to a vehicle in a preset range of the target road segment by the RSU device, where the slow-moving prompt message is used to prompt a driver of the vehicle to slow down and slow down.
Optionally, the edge computing gateway is disposed on a target road segment, and the roadside device includes:
the camera is used for shooting the road surface of the target road section in real time to obtain a real-time road surface image;
the edge computing gateway is specifically configured to detect whether a target obstacle object exists in the real-time road surface image, and if the target obstacle object exists in the real-time road surface image, upload an obstacle detection result about the target detection object to the cloud platform;
the cloud platform is specifically configured to issue a lane change reminding information output instruction to an edge computing gateway of an upstream road section arranged in a target road section when an obstacle detection result is obtained.
In the embodiment of the application, the camera can shoot the road surface of the target road section in real time to obtain a real-time road surface image. Optionally, the edge computing gateway may be in wired connection with the camera, and obtain the real-time road surface image from the camera. The edge computing gateway may detect whether a target obstacle object exists in the real-time road surface image by using an artificial intelligence algorithm, such as a Single Shot Detection (SSD), a Region-based traffic Network (RCNN), or a Young Only Look One (YOLO), where the target obstacle object may be a damaged road surface and/or an obstacle. If the edge computing gateway detects that the target obstacle object exists in the real-time road image, the target road section is not suitable for the vehicle to pass at present, at the moment, in order to guarantee traffic safety, an obstacle detection result about the target detection object can be uploaded to the cloud platform, and the obstacle detection result is used for indicating that the target obstacle object exists on the road surface of the target road section. Since the road in the embodiment of the application includes a plurality of road sections, and the target road section is a certain road section in the road, when the obstacle detection result is obtained, the cloud platform may issue the lane change reminding message output instruction to the edge computing gateway arranged on the upstream road section of the target road section.
It should be noted that the traffic flow on the target road segment is from the upstream of the target road segment, that is, the driving direction of the vehicle on the road is from the upstream of the target road segment to the target road segment. The edge calculation gateway is arranged on the target road section, and the edge calculation gateway is also arranged on the upstream road section of the target road section. When the edge computing gateway of the upstream road section of the target road section receives a lane change reminding message output instruction issued by the cloud platform, the edge computing gateway controls a display screen arranged on the upstream road section to output lane change reminding information, and the lane change reminding information is used for reminding a driver of a vehicle passing through the upstream road section to change lanes.
As a possible implementation manner, if the edge computing gateway of the target road segment detects that the target obstacle object exists in the real-time road image, the obstacle detection result and the real-time road image about the target detection object are uploaded to the cloud platform, and the cloud platform sends the real-time road image to the manual audit client to obtain a manual audit obstacle result for indicating whether the target obstacle object exists in the real-time road image. And if the manual obstacle checking result indicates that the target obstacle object exists in the real-time road image, the cloud platform issues a lane change reminding information output instruction to an edge computing gateway of an upstream road section arranged on the target road section.
As another possible implementation manner, the edge computing gateway of the target road segment may perform information interaction with the edge computing gateway of the upstream road segment, and based on this, if the edge computing gateway of the target road segment detects that the target obstacle object exists in the real-time road image, the obstacle detection result related to the target detection object is sent to the edge computing gateway of the upstream road segment to instruct the edge computing gateway of the upstream road segment to control a display screen arranged in the upstream road segment to output lane change reminding information.
Optionally, the edge computing gateway is further specifically configured to detect whether a condensate exists in the real-time pavement image, and if the condensate exists in the real-time pavement image, upload the real-time pavement image to the cloud platform;
the cloud platform is further specifically configured to send the real-time pavement image to a manual auditing client when the real-time pavement image is acquired, so as to obtain a manual auditing result used for indicating whether condensate exists in the real-time pavement image, and issue a heating instruction to the edge computing gateway if the manual auditing result indicates that condensate exists in the real-time pavement image.
In an embodiment of the present application, the edge computing gateway may detect whether condensate is present in the real-time road surface image using an artificial intelligence algorithm, such as an objective detection algorithm, e.g., SSD, RCNN, or YOLO, wherein the condensate may be snow and/or hail. If the edge computing gateway detects that condensate exists in the real-time road surface image, the condensate indicates that the target road section is not suitable for vehicle passing at present, and at the moment, the real-time road surface image can be uploaded to a cloud platform in order to guarantee traffic safety. When the cloud platform acquires the real-time pavement image, the real-time pavement image is sent to the manual auditing client to obtain a manual auditing result used for indicating whether condensate exists in the real-time pavement image, and if the manual auditing result indicates that the condensate exists in the real-time pavement image, the cloud platform issues a heating instruction to the edge computing gateway. And the edge calculation node controls the infrared heating pipe on the target road section to heat the target road section after receiving the heating instruction, so that the temperature of the road surface of the target road section is increased, and condensate on the road surface is melted to ensure the driving safety of the vehicle.
Optionally, the roadside apparatus further includes:
the alarm equipment is used for giving an alarm when receiving a preset instruction;
the edge computing gateway is further specifically used for monitoring whether the alarm device enters an operating state, controlling the camera to shoot the position of the alarm device when the alarm device enters the operating state, obtaining a field image, and uploading the field image to the cloud platform.
In this application embodiment, the alarm device can be arranged at the lower part of the lamp post of the signal lamp, and when the alarm device receives a preset instruction, the alarm device can give an alarm, for example, an alarm button is arranged on the alarm device, and when the alarm button is pressed, the alarm device can give an alarm. The edge computing gateway can monitor whether the alarm equipment enters the running state or not, the fact that the monitoring alarm equipment enters the running state indicates that a person presses an alarm button, at the moment, the edge computing gateway can control a camera to shoot the position of the alarm equipment to obtain a field image, and the field image is uploaded to a cloud platform. The cloud platform may send the live image to a relevant department (e.g., a police department) so that the relevant department can keep track of information about the alarming personnel.
Optionally, the target road segment belongs to a photovoltaic road, and the roadside apparatus includes:
the natural environment detector is used for acquiring environmental meteorological information about the target road section and uploading the environmental meteorological information to the edge computing gateway;
the edge computing gateway is specifically used for uploading environmental weather information to a cloud platform;
the cloud platform is specifically used for calculating the light radiation quantity obtained in the preset time period of the target road section according to the environmental meteorological information and the geographical position information of the target road section, and calculating the actual photovoltaic yield value of the target road section according to the light radiation quantity and the photoelectric conversion efficiency of the photovoltaic module of the target road section.
In the embodiment of the present application, a natural environment detector may be disposed on the target road segment, and the natural environment detector may collect environmental weather information of the target road segment, where the environmental weather information may include, but is not limited to, PM2.5 content, O3Content, wind direction, wind speed, temperature, humidity, air pressure, formaldehyde content, CO content, H2S content, NO content, VOC content, NO2Content, noise, PM10 content, rainfall, duration of rainfall, rain intensity, SO2Content, illumination intensity. The edge computing gateway can control the natural environment detector to collect the environmental meteorological information of the target road section once at certain time intervals (such as 5 minutes), the natural environment detector can upload the environmental meteorological information collected every time to the edge computing gateway, and the edge computing gateway uploads the environmental meteorological information to the cloud platform. The cloud platform can calculate the target road section within a preset time period (such as the time period of the target road section) according to the environmental meteorological information and the geographical position information of the target road sectionWithin one year), and then calculating the actual photovoltaic yield value of the target road section according to the light radiation quantity and the photoelectric conversion efficiency of the photovoltaic module of the target road section. For example, the illumination duration of the target road section within one year can be obtained according to the geographical location information, the light radiation quantity of the target road section within one year can be calculated according to the illumination duration and the illumination intensity, and then the actual photovoltaic yield value of the target road section can be calculated according to the light radiation quantity and the photoelectric conversion efficiency of the photovoltaic module of the target road section. The maintenance personnel of the target road section can obtain the actual photovoltaic capacity value of the target road section from the cloud platform, so that the target road section is maintained according to the actual photovoltaic capacity value.
Optionally, the roadside apparatus further includes:
the direct current manager is used for managing direct current generated by converting sunlight by the photovoltaic module;
and the power management device is used for acquiring the electric energy from the direct current manager and supplying power to the powered device on the target road section.
In the embodiment of the application, the photovoltaic module of the target road section converts the received sunlight into direct current and transmits the direct current to the direct current manager for management. The power management equipment is used as sub-equipment of the direct current manager, has functions of voltage division, shunt, electric quantity calculation, branch switch and the like, can obtain electric energy from the direct current manager, the obtained electric energy is used for supplying power to the powered equipment on a target road section, and the powered equipment can comprise but is not limited to an edge calculation gateway, a signal lamp, a signal machine, RSU equipment, a camera, alarm equipment and a natural environment detector. The direct current power supply is directly carried out on the power receiving equipment, so that the electric energy loss in the alternating current-direct current conversion process can be reduced, and the aim of saving the electric energy is fulfilled. It should be noted that one power management device may be disposed on the target road segment, or two or more power management devices may be disposed on the target road segment, and the number of the power management devices of the target road segment is not limited herein.
Optionally, the edge computing gateway is further specifically configured to obtain the remaining amount of electric energy of the dc manager and the electric energy consumption of the power management device, and upload the remaining amount of electric energy and the electric energy consumption to the cloud platform;
the cloud platform is further specifically used for calculating the production benefit of the target road section according to the actual photovoltaic production value, the electric energy surplus and the electric energy consumption.
In this embodiment of the application, the edge computing gateway is connected to the power management device, and the edge computing gateway may obtain, from the power management device, electric energy computing data of the power management device, where the electric energy computing data may include data such as electric energy consumption, voltage, current, frequency, active power, reactive power, apparent power, active power, and reactive power. The edge computing gateway can upload the acquired electric energy computing data to the cloud platform to monitor the power utilization condition of the powered device. The edge computing gateway is connected with the direct current manager, can obtain the residual amount of the electric energy of the direct current manager, and uploads the residual amount of the electric energy to the cloud platform. The cloud platform can calculate the production benefit of the target road section according to the actual photovoltaic production value, the surplus electric energy and the consumption amount of the electric energy, and the production benefit can reflect the value of the road system.
Optionally, the roadside apparatus further includes:
a roadside lamp for illuminating a target road section;
the power adapter is used for controlling the brightness of the road side lamp through the PWM wave;
the cloud platform is specifically used for issuing a first lighting control command or a second lighting control command to the edge computing gateway, the first lighting control command comprises at least one lighting control time interval and first lighting control brightness corresponding to each lighting control time interval, and the second lighting control command comprises second lighting control brightness;
the edge computing gateway is specifically configured to determine a target light control period to which the current time belongs in at least one light control period after receiving the first light control command, control the luminance of the roadside lamp to be first light control luminance corresponding to the target light control period through a PWM wave by using the power adapter, and control the luminance of the roadside lamp to be second light control luminance through a PWM wave by using the power adapter after receiving the second light control command.
In this application embodiment, can set up the roadside lamp pole on the target highway section, be provided with the roadside lamp on this roadside lamp pole, this roadside lamp can be with the illumination of target highway section. The power adapter is further arranged inside the road side lamp post and can control the turn-on and turn-off of the road side lamp through the PWM wave, so that the time length of forward current conducted by the road side lamp is changed, and the brightness of the road side lamp is adjusted. Specifically, the edge computing gateway may output PWM waves of different duty ratios to the power adapter, so that the power adapter controls the roadside lamp to generate different brightness through the PWM waves of different duty ratios. For example, the edge computing gateway may output 10 PWM waves with different duty ratios to the power adapter, so that the power adapter controls the roadside lamp to generate 10 different brightnesses through the 10 PWM waves with different duty ratios. The cloud platform can issue a first light control command or a second light control command to the edge computing gateway, wherein the first light control command comprises at least one light control time interval and first light control brightness corresponding to each light control time interval, and the second light control command comprises second light control brightness. If the cloud platform issues the first light control command to the edge computing gateway, the edge computing gateway obtains the current time after receiving the first light control command, then determines a target light control time period to which the current time belongs in at least one light control time period, the target light control time period corresponds to a first light control brightness, and the edge computing gateway can output a corresponding PWM wave to the power adapter, so that the power adapter controls the brightness of the roadside lamp to be the first light control brightness corresponding to the target light control time period through the PWM wave. For example, assume that the first light control command includes three light control periods, that is, 0 to 5 points, 5 to 18 points, and 18 to 24 points in a day, the first light control brightness corresponding to 0 to 5 points in the light control period is 10, the first light control brightness corresponding to 5 to 18 points in the light control period is 0, the first light control brightness corresponding to 18 to 24 points in the light control period is 12, if the current time is 20 points, the target light control period to which the current time belongs is 18 to 24 points, and the corresponding first light control brightness is 12, the brightness of the roadside lamp is controlled to 12. If the cloud platform issues the second light control command to the edge computing gateway, after the edge computing gateway receives the second light control command, the edge computing gateway may output a corresponding PWM wave to the power adapter, so that the power adapter controls the brightness of the roadside lamp to be the second light control brightness through the PWM wave.
Optionally, the roadside apparatus further includes:
the broadcasting equipment is used for playing the audio to be played;
the edge computing gateway is specifically configured to, when receiving an audio playing control instruction issued by a cloud platform through a Message Queue Telemetry Transport (MQTT) Protocol, parse the audio playing control instruction to obtain a Uniform Resource Identifier (URI) address of an audio to be played, download the audio to be played from an HTTP server of the cloud platform according to the URI address and a hypertext Transfer Protocol (HTTP), and control the broadcasting device to play the audio to be played.
In the embodiment of the application, a communication system is constructed by adopting a scheme combining an MQTT protocol, a JSON (JavaScript object Notation) data exchange format, an SM2 algorithm and an HTTP protocol, and information interaction between an edge computing gateway and a cloud platform is carried out.
The target road section can be provided with broadcasting equipment, and the broadcasting equipment can play audio to be played. The MQTT protocol is suitable for lightweight data transmission, and the HTTP protocol is suitable for large file transmission. Therefore, when the edge computing gateway receives an audio playing control instruction issued by the cloud platform through the MQTT protocol, the edge computing gateway obtains the URI address of the audio to be played from the audio playing control instruction, then automatically downloads the audio to be played from the HTTP server of the cloud platform according to the URI address and the HTTP protocol, and controls the broadcasting device to play the audio to be played.
The implementation mode of the information interaction between the edge computing gateway and the cloud platform based on the MQTT protocol is as follows: and (4) setting up an MQTT server as an intermediate agent, and using the cloud platform and the edge computing gateway as an MQTT client. The MQTT server should configure information such as Internet Protocol (IP) address, port, user name, and password. The cloud platform and the edge computing gateway serve as MQTT clients, negotiation agreement between a publishing Topic (Publish Topic) and a subscribing Topic (Subscribe Topic) is required to be carried out, and message publishing and subscribing are carried out through the topics. For example:
publishing topics for edge computing gateways (i.e., subscription topics for cloud platforms): pubtopic;
subscription topics for edge computing gateways (i.e., publication topics for cloud platforms): subtopic.
For convenience of managing a plurality of edge computing gateways on a road, a communication networking between the edge computing gateway and a cloud platform may be constructed based on an MQTT protocol, as shown in fig. 2, the road may be divided into a plurality of regions (e.g., a region 1, a region 2, and a region 3), each region includes a plurality of road segments, and accordingly, each region includes a plurality of edge computing gateways, it should be noted that fig. 2 is only an example, and the number of the regions is not limited in the embodiment of the present application. Each edge computing gateway in the same area commonly uses a pair of publishing topics and subscribing topics; the publishing topics and the subscribing topics of the edge computing gateways in different areas are different. By the mode that only one pair of themes is distributed in one area, the pressure of the cloud platform on managing excessive themes and monitoring windows can be greatly reduced. In order to implement this method, a gateway identifier needs to be set for each edge computing gateway in the area, so as to distinguish each edge computing gateway in the area. Meanwhile, in order to realize information interaction between the edge computing gateways in the same area, a data operator identifier is also required to be added for distinguishing whether the transmitted data is sent by the cloud platform or the edge computing gateways.
Protocol data transmitted between the cloud platform and the edge computing gateway can be implemented in a JSON format, and one example of the protocol data implemented in the JSON format is as follows:
{
"ID": 10000001",// gateway identification
Type 1, data type
"operator": 0",// data operator identification, 0 represents that the data is the data sent by the cloud platform, 1 represents that the data is the data sent by the edge computing gateway
"seq": 0kz5 jizotlov 2amct7fd4jl3s4kqza "// SEQ ID NO
Time 2020-02-1509: 55:36,// date type: time of day
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Data {// content of data
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In order to ensure the security of data transmitted between the cloud platform and the edge computing gateway, the data can be encrypted by using a cryptographic SM2 algorithm, which needs a key pair: a public key and a private key. The public key and the private key are in a pair, if the public key is used for encrypting data, the data can be decrypted only by using the corresponding private key, the encryption strength is high, the data security is guaranteed, the method is suitable for encrypting and transmitting data between the edge computing gateway and the cloud platform, the public key can be distributed to the edge computing gateway, the private key is distributed to the cloud platform, and meanwhile, the method of replacing the key pair irregularly is adopted, so that the data security is further guaranteed.
In order to solve the problem of large file transmission, an HTTP mode can be adopted to transmit a single large file, and the implementation mode is as follows: and at the place where the HTTP server is built on the cloud platform side to serve as file resource storage, the edge computing gateway serves as an HTTP client to send a request to the HTTP server so as to acquire the file resources stored by the HTTP server.
Optionally, the roadside apparatus may further include:
the microwave radar is used for detecting the traffic flow of a target road section;
the display screen is used for releasing information such as videos, characters and pictures, and specifically can provide information such as position service information, traffic road conditions, accumulated water early warning, parking space information, bus arrival information along the line, video programs and advertisements.
The road system is further described in detail below by way of a specific example. Referring to fig. 3, fig. 3 is an exemplary diagram of a road system.
Fig. 3 shows two road segments on a photovoltaic road, namely road segment 1 and road segment 2. The road section 1 comprises a crossroad and is a road section with a large traffic flow, and therefore a signal lamp and a signal machine are arranged on the road section 1, and the signal lamp is arranged on a signal lamp post. The upper part of the signal lamp pole can be provided with a microwave radar, RSU equipment and a camera; in the lower part of the signal light pole, an edge computing gateway can be arranged. The road section 1 is also provided with a pedestrian crossing light-emitting marking and a power supply management device. The semaphore, the signal lamp, microwave radar, the camera, RSU equipment, power management equipment, the relation of connection between marginal calculation gateway and the luminous marking of pedestrian crossing is shown in figure 4, wherein marginal calculation gateway and cloud platform wireless connection, marginal calculation gateway respectively with power management equipment, RSU equipment, the semaphore, the camera, microwave radar wired connection, RSU equipment and the luminous marking wireless connection of pedestrian crossing, and RSU equipment can be with the past vehicle information interaction of highway section 1, semaphore and wired signal lamp connection.
The road section 2 does not contain a crossroad and is a road section with small traffic flow, so that signal lamps and signal machines are not arranged on the road section 2, and only road side lamps for illumination are required to be arranged, and the road side lamps are arranged on road side lamp posts. The upper part of the roadside lamp pole can be provided with a microwave radar, RSU equipment, a camera, broadcasting equipment and a natural environment detector; a display screen can be arranged in the middle of the roadside lamp post; and an edge computing gateway and an alarm device can be arranged at the lower part of the signal lamp pole. The road section 2 is also provided with a power management device. The roadside lamp, the microwave radar, RSU equipment, the camera, broadcasting equipment, the natural environment detector, the display screen, edge computing gateway, the relation of connection between power management equipment and the alarm device is shown in figure 5, wherein edge computing gateway and cloud platform wireless connection, edge computing gateway respectively with the roadside lamp, power management equipment, RSU equipment, the camera, the natural environment detector, the display screen, broadcasting equipment, alarm device wired connection, RSU equipment and infrared heating pipe wireless connection, and RSU equipment can be with the past vehicle information interaction of highway section 2, semaphore and signal lamp wired connection.
As can be seen from the above, the road system in the present application includes a roadside device, an edge computing gateway, and a cloud platform, where the roadside device is configured to collect road condition data of a target road segment and upload the road condition data to the edge computing gateway; the edge computing gateway is used for receiving the road condition data uploaded by the road side equipment, analyzing the road condition data and uploading an analysis result to the cloud platform; the cloud platform is used for receiving the analysis result uploaded by the edge computing gateway and issuing a control instruction to the edge computing gateway according to the analysis result, wherein the control instruction is used for instructing the edge computing gateway to control the roadside device. According to the scheme, the edge computing gateways arranged on the target road section serve as edge computing nodes and are respectively communicated with the cloud platform and the road side equipment arranged on the target road section, so that the cloud platform controls the edge computing gateways, and the edge computing gateways control the road side equipment, and therefore stable and reliable edge computing is deployed on the road.
Those of ordinary skill in the art will appreciate that the various illustrative modules and method steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of external device software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A roadway system, comprising:
the system comprises road side equipment, an edge computing gateway and a cloud platform;
the road side equipment is used for acquiring road condition data of a target road section and uploading the road condition data to the edge computing gateway;
the edge computing gateway is used for receiving the road condition data uploaded by the road side equipment, analyzing the road condition data and uploading an analysis result to the cloud platform;
the cloud platform is used for receiving the analysis result uploaded by the edge computing gateway and issuing a control instruction to the edge computing gateway according to the analysis result, wherein the control instruction is used for instructing the edge computing gateway to control the road side equipment.
2. The road system according to claim 1, wherein the roadside apparatus comprises:
the signal lamp is used for displaying traffic lights;
the signal machine is used for controlling the signal lamp according to the signal timing information and sending the signal timing information to the edge computing gateway;
and the edge computing gateway is specifically used for judging whether the current time belongs to the green light time period of the signal lamp or not according to the signal timing information, and controlling the pedestrian crossing light-emitting marked line arranged on the target road section to emit light with a preset color if the current time belongs to the green light time period.
3. The road system of claim 2, wherein the roadside apparatus further comprises:
the RSU equipment is used for carrying out information interaction with vehicles on the target road section;
the edge computing gateway is further specifically configured to determine whether the current time belongs to the green light time period of the signal lamp according to the signal timing information, and if the current time belongs to the green light time period, send a slow-moving prompt message to vehicles in a preset range of the target road segment through the RSU device, where the slow-moving prompt message is used to prompt a driver to slow down and slow down.
4. The road system of claim 1, wherein the edge computing gateway is disposed on the target road segment;
the roadside apparatus includes:
the camera is used for shooting the road surface of the target road section in real time to obtain a real-time road surface image;
the edge computing gateway is specifically configured to detect whether a target obstacle object exists in the real-time road surface image, and if the target obstacle object exists in the real-time road surface image, upload an obstacle detection result about the target detection object to the cloud platform;
the cloud platform is specifically configured to issue a lane change reminding information output instruction to an edge computing gateway of an upstream road section of the target road section when the obstacle detection result is obtained, where the lane change reminding information output instruction is used to instruct the edge computing gateway of the upstream road section to control a display screen arranged in the upstream road section to output lane change reminding information, and the lane change reminding information is used to remind a driver of a vehicle passing through the upstream road section to change lanes.
5. The roadway system of claim 4, wherein the edge computing gateway is further configured to detect whether condensation is present in the real-time roadway image, and upload the real-time roadway image to the cloud platform if condensation is detected in the real-time roadway image;
the cloud platform is further specifically configured to send the real-time pavement image to a manual auditing client when the real-time pavement image is acquired, so as to obtain a manual auditing result used for indicating whether condensate exists in the real-time pavement image, and issue a heating instruction to the edge computing gateway if the manual auditing result indicates that condensate exists in the real-time pavement image, where the heating instruction is used for indicating the edge computing gateway to control an infrared heating pipe on the target road section to heat the target road section.
6. The road system of claim 5, wherein the roadside apparatus further comprises:
the alarm equipment is used for giving an alarm when receiving a preset instruction;
the edge computing gateway is further specifically used for monitoring whether the alarm device enters an operating state, controlling the camera to shoot the position of the alarm device when the alarm device enters the operating state, obtaining a field image, and uploading the field image to the cloud platform.
7. The road system of claim 1, wherein the target road segment belongs to a photovoltaic road, and the road side device comprises:
the natural environment detector is used for collecting environmental meteorological information about the target road section and uploading the environmental meteorological information to the edge computing gateway;
the edge computing gateway is specifically used for uploading the environmental weather information to the cloud platform;
the cloud platform is specifically configured to calculate an optical radiation quantity obtained in a preset time period of the target road section according to the environmental weather information and the geographical position information of the target road section, and calculate an actual photovoltaic yield value of the target road section according to the optical radiation quantity and the photoelectric conversion efficiency of a photovoltaic module of the target road section.
8. The road system of claim 7, wherein the roadside apparatus further comprises:
the direct current manager is used for managing direct current generated by converting sunlight by the photovoltaic assembly;
and the power management device is used for acquiring the electric energy from the direct current manager and supplying power to the powered device on the target road section.
9. The road system of claim 8, wherein the edge computing gateway is further specifically configured to obtain a remaining amount of electric energy of the dc manager and an electric energy consumption amount of the power management device, and upload the remaining amount of electric energy and the electric energy consumption amount to the cloud platform;
and the cloud platform is further specifically used for calculating the production benefit of the target road section according to the actual photovoltaic production value, the electric energy surplus and the electric energy consumption.
10. The road system of claim 1, wherein the roadside apparatus further comprises:
the broadcasting equipment is used for playing the audio to be played;
the edge computing gateway is specifically configured to, when receiving an audio playing control instruction issued by the cloud platform through an MQTT protocol, parse the audio playing control instruction to obtain a URI address of the audio to be played, download the audio to be played from an HTTP server of the cloud platform according to the URI address and an HTTP protocol, and control the broadcasting device to play the audio to be played.
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| CN113112827A (en) * | 2021-04-14 | 2021-07-13 | 深圳市旗扬特种装备技术工程有限公司 | Intelligent traffic control method and intelligent traffic control system |
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