CN210955503U - Vehicle turning early warning system - Google Patents
Vehicle turning early warning system Download PDFInfo
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- CN210955503U CN210955503U CN202020105715.4U CN202020105715U CN210955503U CN 210955503 U CN210955503 U CN 210955503U CN 202020105715 U CN202020105715 U CN 202020105715U CN 210955503 U CN210955503 U CN 210955503U
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Abstract
The utility model discloses a vehicle turning early warning system, which comprises a vertical rod, wherein an embedded controller, an external device and a communication unit are arranged on the vertical rod; the embedded controller is connected with peripheral equipment such as an alarm sound box, a camera, an LED (light-emitting diode) prompting lamp and the like and a communication unit, and the communication unit is connected with a vehicle-mounted terminal through a wireless network; the upright stanchion is arranged at the road intersection, and the vehicle-mounted terminal is arranged in a vehicle; the vehicle-mounted terminal is an embedded terminal and comprises a positioning unit and a communication unit. The utility model can detect whether someone stays in the turning area; before the bus arrives at a turning area, informing a driver of the bus whether pedestrian information and early warning information exist in the turning area; the traffic accident rate is reduced, and the operation efficiency is improved. Before the bus arrives at a turning area, if people exist in the turning area, early warning information is sent to the people in the turning area to remind people of avoiding the bus; the safety trip of the public is ensured.
Description
Technical Field
The utility model relates to a public transport field particularly, relates to a vehicle turn early warning system.
Background
Along with the development of cities, people and traffic flow on urban roads are larger and larger, urban buildings are also larger and denser, blind areas of vehicles passing through intersections are more and more, particularly, sudden pedestrians or electric vehicles and the like often appear during turning, and traffic accidents are easily caused. Therefore, the invention of a vehicle turning early warning system is an urgent problem to be solved by the technical personnel in the field.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides a vehicle turn early warning system can solve above-mentioned problem.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
a vehicle turning early warning system comprises a vertical rod, wherein an embedded controller is arranged on the vertical rod, the embedded controller is connected with an alarm sound box, a camera, an LED (light-emitting diode) prompting lamp and a communication unit, and the communication unit is in communication connection with a vehicle-mounted unit; the upright stanchion is arranged at the road intersection, and the vehicle-mounted unit is arranged in the vehicle.
Furthermore, the vertical rod is a crossing device.
Further, the communication unit is connected with the vehicle-mounted unit through wireless communication.
Further, the vehicle-mounted unit comprises a positioning unit and a communication unit.
The utility model has the advantages that:
1. the utility model can detect whether someone stays in the turning area; before the bus arrives at a turning area, informing a driver of the bus whether pedestrian information exists in the turning area or not and sending out early warning information; the traffic accident rate is reduced, and the operation efficiency is improved.
2. Before the bus arrives at a turning area, if people exist in the turning area, early warning information is sent to the people in the turning area to remind people of avoiding the bus; the safety trip of the public is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a vehicle turn warning system;
FIG. 2 is a block diagram of a vehicle turn warning system;
FIG. 3 is a flow chart of intrusion detection by a vehicle turn warning system camera.
In the figure: 1. the system comprises a vertical rod, 2 an embedded controller, 3 an alarm sound box, 4 a camera, 5 an LED prompting lamp, 6 a communication unit and 7 a vehicle-mounted unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in fig. 1-3, the vehicle turning early warning system according to the embodiment of the present invention comprises a vertical rod 1, wherein an embedded controller 2 is arranged on the vertical rod 1, the embedded controller 2 is connected with an alarm sound box 3, a camera 4, an LED indicator 5 and a communication unit 6, and the communication unit 6 is connected with an on-board unit 7 in a communication manner; the upright stanchion 1 is arranged at the road intersection, and the vehicle-mounted unit 7 is arranged in a vehicle.
In a specific embodiment of the present invention, the vertical rod 1 is a crossing device.
In a specific embodiment of the present invention, the communication unit 6 is connected to the on-board unit 7 through wireless communication.
In a specific embodiment of the present invention, the on-board unit 7 includes a positioning unit and a communication unit.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.
The utility model discloses well practical key technology contains vehicle access wireless communication in coordination, based on image recognition's regional intrusion alert, based on embedded equipment integrated control.
One-vehicle-road cooperative wireless communication
The currently adopted technologies for vehicle-road cooperative wireless communication mainly include the following:
1. RFID technology: the RFID is widely applied to systems such as a barrier gate, an entrance guard and the like, and the RFID technology is also largely used in the prior high-speed ETC system. However, the RFID technology has high requirements for direction, distance, and shielding conditions, does not support bidirectional data transmission for protocol expansion, and is currently applicable only to some fixed scenes.
2. WIFI technology: remote WIFI nodes are established in many urban areas in China, and communication can be carried out in a wireless mode. However, the WIFI technology is a short-distance communication technology, and the connection establishment time is too long, which is not suitable for network transmission of the mobile terminal. At present, remote WIFI communication is achieved in a power-increasing mode, the effective distance is 100 meters, and the requirement for node erection is extremely high.
3. The low-power consumption Internet of things technology comprises the following steps: the most used low-power consumption internet of things technology is two types: NB-IoT and LoRa technologies. The NB-IoT establishes a network for an operator, can be directly deployed in an LTE network, and has no great difference to terminal customers except for bandwidth limitation from a 4G mode through an operator base station in the application, but depends on the operator seriously and cannot compensate blindness. Another method is LoRa, which is a low-power consumption medium-long distance communication technology that is separated from the operator and the provider independently deploys the gateway. In the technical aspect, the technology belongs to the low-power consumption internet of things technology with NB-IOT, but LoRa is easily influenced by policies, and pressure exists in site deployment.
4. The technology of the Internet of vehicles: the vehicle networking is a V2X scheme which is widely used at present, and two technical standards of DSRC and LTE-V exist particularly to a protocol layer. The vehicle-road cooperative scheme which is currently being constructed is expanding construction, and is also a technology which can be used by the vehicle-road cooperative wireless transmission technology.
5. 3G/4G communication mode: and transmitting the information to a background by using the current 3G/4G channel, processing the information by a background machine room, and issuing related information to the current vehicle and the corresponding intersection. This approach is simpler to set up, but network latency is slightly higher due to centralized processing.
To sum up, in this patent, the vehicle and road cooperation wireless communication mode will be designed according to three kinds of modes of 3G/4G communication, low-power consumption thing networking NB-IOT, V2X, to different application scenarios, correspond and adopt different communication units.
Area intrusion alarm based on image recognition
At present, the regional invasion based on image recognition is generally adopted as follows:
1. and the camera is integrated in a defined sensitive area in the camera, monitors the area and configures and outputs alarm information.
2. And the NVR equipment of the server or the intersection is adopted to monitor the video in real time, and intrusion alarm is carried out after the area is defined.
Under the condition of adopting the first scheme, the requirement on the camera is higher, and the equipment of monitoring manufacturers such as Haikang, Dahua and the like in the market is investigated, the polygonal area cannot be set, and only the quadrilateral area can be defined for monitoring. In the application, one lens can be adopted to monitor a plurality of quadrilateral areas.
In the second approach, the NVR of one terminal needs to be increased, which is a little more difficult in the optional installation area for the application scenario.
Thirdly, integrated control of equipment based on embedded
The equipment in this application includes on-board units and roadside units. The vehicle-mounted unit is mainly a network communication unit and has the function of sending the information of the vehicle to the roadside and receiving the information of the roadside.
The road side unit includes:
a camera: the system is used for monitoring the condition of the vehicle turning early warning area and sending early warning information in real time;
alarm sound box: when a scene is triggered, prompting is carried out on a person;
a display unit: the multi-stage display unit can display the approaching of turning vehicles, the intrusion condition of an early warning area, intersection passing instructions and the like.
A communication unit: and establishing a communication channel with the vehicle and the background, wherein a 4G or V2X terminal can be selected.
An information integrated processing unit: the information comprehensive processing unit is a control center of distributed nodes and is used for receiving images and early warning information of the camera, controlling the sound box and the display unit, communicating with a background or a vehicle and processing data in a scene.
The control interface is mainly described in the integrated control of the embedded-based equipment. The interfaces adopted at home and abroad at present mainly have various forms such as IO, serial ports, networks and the like, are mature interface forms at present, and are butted according to interfaces of various devices in the application.
1. The multi-path cameras divide areas, and alarm information is output to the integrated control terminal
The warning type camera on the market at present is adopted, a warning area can be configured in the camera, and warning information can be output when a person or a non-motor vehicle intrudes. In the scheme, a commercial outdoor monitoring camera is selected, and a polygonal area or a plurality of quadrilateral areas are divided in a picture and combined. Because the actual intersection conditions are different, the installation height of a single camera is basically 3.5 meters to 4 meters, and the coverage area of the single camera is approximately 5 meters by 3 meters, a plurality of cameras are selected for combined monitoring according to the different intersection conditions.
2. And based on the image picture of the common camera, the integrated control terminal performs image intrusion detection.
The solutions based on commercial cameras are limited to the division of the warning zones by the manufacturers. Taking Haokang as an example, only a quadrilateral area can be divided for zone warning, and only a plurality of quadrilateral areas can be adopted for cutting detection. But actually only the regional invasion is processed at present, and the setting of the irregular region can be achieved without limitation.
In this patent, the detection of regional intrusion is divided into the following steps:
firstly, drawing a polygonal area from a picture as a background, extracting frames from a video stream, calling the coordinates of an original picture point for each frame of picture to cut, comparing the cut picture with an original background picture, considering that the area is invaded when the picture difference is greater than a threshold value, and triggering area invasion alarm.
Considering the change of roadside facilities and the change of basic pictures caused by the shaking of the camera, the basic pictures are considered to be changed when the difference value between the plurality of the contact frames is lower than a threshold value, and uninterrupted regional intrusion detection is carried out according to the new picture region as the basic pictures.
Secondly, adopting two modes for vehicle-road cooperative wireless communication according to actual scenes
1. Vehicle short-range communication based on V2X system
V2X (Vehicle to X) is a key technology of the future intelligent transportation system. It enables communication between cars, between cars and base stations, and between base stations. Therefore, a series of traffic information such as real-time road conditions, road information, pedestrian information and the like is obtained, so that the driving safety is improved, the congestion is reduced, the traffic efficiency is improved, and the vehicle-mounted entertainment information is provided.
The V2X technology carries out wireless communication between the vehicle-mounted OBU and the RSU of the road side, adopts DSRC and LTE-V technologies, adopts 5.8-5.9 GHz frequency to carry out communication, and carries out communication at the vehicle end and the road side end. In this patent, the communication content between the vehicle and the road mainly includes: the identity, location, speed and current status of the vehicle and the intrusion status of the roadside turn zone. The communication result is displayed at the vehicle end mainly by providing early warning information for a driver through a human-computer interaction interface, and the display at the roadside end mainly comprises an acousto-optic prompt on a roadside upright post for providing early warning information for pedestrians.
The LTE-V technology in the V2X technology has two communication modes: cellular and direct. The cellular mode is to use a base station as a control center to realize the access and networking of the automobile; the direct connection mode is direct communication between vehicles and roads, and the mode is complementary to the cellular mode and aims at application scenes of low time delay and high-speed movement.
2. NB-IoT communication technology based on low-power-consumption Internet of things
The NB-IoT is an important branch of the internet of everything. The NB-IoT is constructed in a cellular network, is directly deployed in the current GSM network, UMTS network and LTE network, uses the narrowband part of the original network, can be used in the scenes with high speed, low time delay and low network bandwidth requirement, and is directly deployed in the current network of a mobile operator to realize the aims of reducing the deployment cost and smoothly upgrading. At present, domestic operators have deployed a large number of NB-IoT nodes, and can realize the vehicle-road communication in the patent by means of the channel.
Different from the technical scheme of V2X, NB-IoT is deployed in the current operating network, and a communication link needs to pass through an operator, so that the initial deployment cost is low, and the NB-IoT can be deployed quickly by the power of the operator. But inevitably, the method is heavily dependent on the operator, and the poor signal condition needs to be negotiated with the operator for solving. In actual use, communication with the operator is required.
And thirdly, performing core processing of the embedded terminal integrated control into signal analysis and equipment control.
In this patent, the following parts are required for integrated control:
1. image processing technique
The image processing techniques correspond to the detection of intrusion into alert zones in the patent. The embedded terminal is connected with the video information in a butt mode, the content of the video is monitored, and intrusion detection in a warning area is achieved. At present, an image processing technology is adopted for regional target intrusion detection based on an interframe difference method.
2. Device control interface
The equipment that needs embedded integrated control terminal butt joint in this patent includes: loudspeaker, LED display, light, network communication equipment.
The main interface types are as follows:
a horn: analog interface
LED display: serial port, CAN and network
Lighting: IO control and serial port
Communication equipment: net mouth
According to the interfaces of different units, the embedded integrated control terminal distributes and controls various peripheral equipment after the logic needs to be processed.
3. Communication network interfacing
The integrated control terminal is designed with two docking modes: network-based V2X interfacing and NB-IoT-based interfacing.
A network interface is generally adopted for butt joint of RSUs in a V2X system, RSUs of an LTE-V/DSRC wireless communication protocol are adopted in the patent, a control terminal is in butt joint with networks of the RSUs, network building is carried out in a TCP Socket mode, and data are transmitted mutually.
The communication butt joint based on the NB-IoT mode is butt joint according to an SDK mode provided by an operator, and network data are transmitted through the operator.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A vehicle turning early warning system comprises a vertical rod (1), and is characterized in that an embedded controller (2) is arranged in the vertical rod (1), the embedded controller (2) is connected with an alarm sound box (3), a camera (4), an LED (light emitting diode) prompting lamp (5) and a communication unit (6), and the communication unit (6) is in communication connection with a vehicle-mounted unit (7); the upright stanchion (1) is arranged at the road intersection, and the vehicle-mounted unit (7) is arranged in a vehicle.
2. The vehicle turn warning system according to claim 1, characterized in that the upright (1) is a crossing device.
3. The vehicle turn warning system according to claim 1, characterized in that the communication unit (6) is connected to the on-board unit (7) by wireless communication.
4. The vehicle turn warning system according to claim 1, characterized in that the on-board unit (7) includes a positioning unit and a communication unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020105715.4U CN210955503U (en) | 2020-01-17 | 2020-01-17 | Vehicle turning early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020105715.4U CN210955503U (en) | 2020-01-17 | 2020-01-17 | Vehicle turning early warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210955503U true CN210955503U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020105715.4U Active CN210955503U (en) | 2020-01-17 | 2020-01-17 | Vehicle turning early warning system |
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| CN (1) | CN210955503U (en) |
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