阅读说明：本技术 一种基于LoRa自组网的交通作业现场安全预警系统及方法 (Traffic operation site safety early warning system and method based on LoRa ad hoc network ) 是由 刘韬 杨敏 骆俊晖 黄海峰 谢成 米俭辉 李华 廖来兴 畅振超 吴春伟 莫鹏 于 2021-05-28 设计创作，主要内容包括：本发明涉及一种基于LoRa自组网的交通作业现场安全预警系统及方法,包括前置装置、警报系统、后台系统、调度系统、信息共享系统五部分组成,通过安装在施工区域安全范围处的前置装置,为道路作业安全进行预警,通过自动检测来往车辆的车辆速度,变换预警等级,并能够在偏离预定位置后自动或通过后台系统控制移动位置,通过警报及时提醒施工作业人员撤离事故现场并向来往车辆发出警报,防止二次事故的发生。(The invention relates to a traffic operation site safety early warning system and method based on a LoRa ad hoc network, which comprises a front device, an alarm system, a background system, a scheduling system and an information sharing system, wherein the front device arranged in the safety range of a construction area is used for early warning for road operation safety, the vehicle speed of vehicles coming and going is automatically detected, the early warning grade is changed, the moving position can be automatically controlled or controlled by the background system after the vehicle speed deviates from a preset position, construction operators are timely reminded to evacuate from an accident site through the alarm, and the alarm is sent to the vehicles coming and going, so that the occurrence of secondary accidents is prevented.)

1. The utility model provides a traffic operation scene safety precaution system based on loRa ad hoc network which characterized in that includes:

the front-end device is used for data collection and data processing of construction safety information of a traffic operation site;

the warning system is used for reminding constructors of not being capable of crossing a safety area and reminding non-constructors of not entering the construction area, and has the early warning function of an isolation device of the construction area with vehicle collision;

the dispatching system is used for commanding the field constructors to save oneself or deal with accidents;

the information sharing system is used for transmitting accident information to a vehicle-mounted navigation system of vehicles running on the road or a navigation system on a driver mobile phone, and transmitting information such as road conditions and the like to the background system;

and the background system is used for receiving the construction safety information transmitted by the front-end device, and storing and analyzing the received information.

2. The system of claim 1, wherein: all systems can be in wireless connection, information transmission is achieved through the LoRa ad hoc network, and the system has the function of transmitting signals at a long distance.

3. The system of claim 1, wherein: the front-end device is respectively connected with the alarm system, the background system and the scheduling system.

4. The system of claim 1, wherein: the alarm device is respectively connected with the background system, the information sharing system and the forward transmission device.

5. The system of claim 1, wherein: the information sharing system is respectively connected with the alarm device, the background system and the scheduling system.

6. The system of claim 1, wherein: the scheduling system is respectively connected with the alarm device, the background system and the information sharing system.

7. The system of claim 1, wherein: the background system is respectively connected with the front-end device, the alarm device, the background system and the information sharing system.

8. The system of claim 1, wherein: the front-end device identifies safety risks by using intelligent cone barrel equipment and transmits the safety risks to other systems, and the front-end device can change the early warning level according to information transmitted by the background system;

each intelligent cone barrel device is respectively arranged at a safe distance of a traffic operation site;

the intelligent cone bucket is used for sending early warning information such as vehicle collision to the background system and can automatically or through the background system control the moving position after deviating from a preset position.

9. The system of claim 1, wherein: the alarm system comprises a three-color lamp and intelligent bracelet equipment;

the three-color lamp devices are respectively arranged at obvious positions at each boundary of the traffic operation site safety construction range;

each intelligent hand ring device is respectively arranged on each constructor in the safe construction range;

the three-color lamp equipment is used for reminding people and vehicles not to approach a traffic operation site safety construction area;

the intelligent bracelet equipment is used for transmitting a working instruction sent by the background system to a worker, and can position the worker and transmit the position to the background system in real time.

10. The system of claim 1, wherein: the information sharing system is used as a communication method through an LoRa technology and is used for transmitting traffic operation construction information and accident information to a vehicle-mounted navigation system of a vehicle running on a road or a navigation system on a driver mobile phone.

11. A traffic operation site safety early warning method based on a LoRa ad hoc network is characterized by comprising the following steps:

the front-end device can detect the distance between the vehicle and a construction area, can position and send position information of an accident occurrence place when traffic accidents such as vehicle collision occur, and can change the early warning level according to the instruction of the background system;

the warning system can receive the early warning information of the front-end device and the background system and send warning to constructors.

The background system can analyze the vehicle distance information detected by the front-end device, when the vehicle enters a construction area, the early warning grade is changed into a second-level early warning, when the vehicle enters a front-end device which threatens the construction safety range or collides the construction area, the early warning grade is changed into a first-level early warning, constructors are reminded of paying attention to the early warning, and accident information is transmitted to a vehicle-mounted navigation system of a vehicle running on a road or a navigation system on a driver mobile phone through the information sharing system.

12. The LoRa ad hoc network-based traffic operation site safety early warning method according to claim 6, wherein the primary early warning is that when the front-end device detects that the vehicle is 100m away from the construction safety zone or has collided with the front-end device, the primary early warning emits light and sound to remind a driver, and when the front-end device detects that the vehicle is 500m away from the construction safety zone, the secondary early warning emits light to remind the driver.

13. The traffic operation site safety early warning method based on the LoRa ad hoc network according to claim 6, wherein the front device comprises an intelligent cone barrel, and a positioning module, a camera module, a LoRa communication module and a light horn module are arranged on the cone barrel and used for determining the position of a traffic safety construction area and detecting the distance between vehicles.

Technical Field

The invention belongs to the technical field of traffic safety, and particularly provides a traffic operation site safety early warning system and method based on a LoRa ad hoc network

Background

At present, the total mileage and the coverage rate of the expressway in China reach unprecedented heights, the automobile keeping quantity is also at the highest position of nearly twenty years, but with the rapid development of dense road networks, the maintenance difficulty of the expressway is increased, and the occurrence of maintenance accidents when expressway maintenance workers perform expressway maintenance operation is increased year by year.

In order to reduce the occurrence of such events, through the field visits of highway maintenance companies, the most frequent case of highway maintenance work accidents is that highway maintenance personnel are injured or even threaten life due to traffic accidents on the highway. Therefore, if the distance between the vehicle and the construction area can be detected in advance and early warning can be given in time, the accident can be effectively reduced.

Disclosure of Invention

The invention aims to provide a traffic operation site safety early warning system and method based on an LoRa ad hoc network, which can detect distance and position information of a vehicle through an intelligent road device, transmit the distance and position information to a background system through a LoRa ad hoc network wireless transmission system, and warn vehicles and construction personnel to come and go, so that the personnel working at the traffic operation site and drivers of the vehicles to come and go are prevented from being threatened by personal and property safety.

The technical scheme of the invention is as follows: a traffic operation site safety early warning system and method based on a LoRa ad hoc network comprises the following steps:

the front-end device is used for data collection and data processing of construction safety information of a traffic operation site;

the warning system is used for reminding constructors of not being capable of crossing a safety area and reminding non-constructors of not entering the construction area, and has the early warning function of an isolation device of the construction area with vehicle collision;

the dispatching system is used for commanding the field constructors to save oneself or deal with accidents;

the information sharing system is used for transmitting accident information to a vehicle-mounted navigation system of vehicles running on the road or a navigation system on a driver mobile phone, and transmitting information such as road conditions and the like to the background system;

and the background system is used for receiving the construction safety information transmitted by the front-end device, and storing and analyzing the received information.

Furthermore, all systems can be connected wirelessly, information transmission is achieved through the LoRa ad hoc network, and the function of transmitting signals at a long distance is achieved.

Furthermore, the front-end device identifies safety risks by using the intelligent cone barrel equipment and transmits the safety risks to other systems, and the front-end device can change the early warning level according to information transmitted by the background system.

Each intelligent cone barrel device is respectively arranged at a safe distance of a traffic operation site;

the intelligent cone bucket is used for sending early warning information such as vehicle collision to the background system and can automatically or through the background system control the moving position after deviating from a preset position.

Further, the alarm system comprises a three-color lamp and an intelligent bracelet device;

the three-color lamp devices are respectively arranged at obvious positions at each boundary of the traffic operation site safety construction range;

each intelligent hand ring device is respectively arranged on each constructor in the safe construction range;

the three-color lamp equipment is used for reminding people and vehicles not to approach a traffic operation site safety construction area;

the intelligent bracelet equipment is used for transmitting a working instruction sent by the background system to a worker, and can position the worker and transmit the position to the background system in real time.

Furthermore, the information sharing system is used as a communication method through an LoRa technology and is used for transmitting traffic operation construction information and accident information to a vehicle-mounted navigation system of a vehicle running on a road or a navigation system on a driver mobile phone.

A traffic operation site safety early warning method based on a LoRa ad hoc network is characterized by comprising the following steps:

the front-end device can detect the distance between the vehicle and a construction area, can position and send position information of an accident occurrence place when traffic accidents such as vehicle collision occur, and can change the early warning level according to the instruction of the background system;

the warning system can receive the early warning information of the front-end device and the background system and send warning to constructors.

The background system can analyze vehicle distance information detected by the front-end device, the front-end device detects that a vehicle enters a construction area, when the distance is 500m away from a construction safety area, the front-end device converts the early warning level into a second-level early warning and sends out light to remind a driver, when the vehicle enters a construction safety range threatening 100m or collides with the front-end device of the construction area, the early warning level is converted into a first-level early warning, the light and sound are sent out to remind the driver and remind the constructor to pay attention to the driver, and accident information is transmitted to a vehicle-mounted navigation system of the vehicle running on a road or a navigation system on a driver mobile phone through the information sharing system.

Preferably, the front device comprises an intelligent cone, and a positioning module, a camera module, an LoRa communication module and a light horn module are arranged on the cone and used for determining the position of a traffic safety construction area and detecting the distance between vehicles.

Drawings

Fig. 1 is a schematic diagram of a traffic operation site safety early warning system architecture based on a LoRa ad hoc network.

Detailed Description

The following examples further illustrate specific embodiments of the present invention. This example serves to illustrate the technical solution of the present invention more clearly, but is not intended to limit the scope of the present invention.

Referring to fig. 1, the embodiment includes a front-end device for collecting and processing data of construction safety information of a traffic operation site, an alarm system for reminding constructors of not being able to cross over the safety zone and reminding non-constructors of not entering the construction zone, and meanwhile, the alarm system has an early warning function of an isolation device of the construction zone where a vehicle collision occurs, a scheduling system for commanding site constructors to save themselves or process an accident, an information sharing system for transmitting accident information to a vehicle-mounted navigation system of a vehicle running on a road or a navigation system on a mobile phone of a driver, and transmitting information of road conditions and the like to a background system, and the background system for receiving the construction safety information transmitted by the front-end device, storing and analyzing the received information. Through reporting to the police, remind the driver of coming the car to intervene and drive and remind highway maintenance workman to avoid, ensure maintenance operation safety, reduce the emergence of incident. The intelligent cone barrel equipment is used for identifying safety risks and transmitting the safety risks to other systems, and the front-end device can change the early warning level according to information transmitted by the background system. And early warning information such as vehicle collision is sent to a background system, and the moving position can be automatically controlled or controlled by the background system after the vehicle deviates from a preset position. Under the condition of not influencing traffic, the system automatically monitors and collects data in real time, automatically gives an alarm in a grading way, and records real-time road conditions. Through reporting to the police, remind the driver of coming the car to intervene and drive and remind highway maintenance workman to avoid, ensure maintenance operation safety, reduce the emergence of incident.

In order to realize the structural application, the method is implemented according to the following steps:

the first step is as follows: front-end device development design

1. The front device adopts an intelligent cone barrel device, and the device has the advantages that the pre-collision early warning device collects and is provided with a laser radar and a servo acceleration sensor device, so that early warning information can be timely sent out in sensing before the collision of the vehicle, and all-weather high-speed and high-precision distance measurement and speed measurement can be realized. The device can automatically or through a background system control the moving position after deviating from the preset position, the post processing speed of the existing laser radar and servo acceleration sensor is too slow, the laser radar and servo acceleration sensor used in the device must be optimized, and the LoRa signal transmission method is adopted, so that the safety early warning time is prolonged.

2. Alarm system includes tristimulus designation lamp and intelligent bracelet equipment, and tristimulus designation lamp equipment is used for reminding personnel and vehicle not to be close to traffic operation scene safety construction area, reminds personnel and vehicle not to be close to traffic operation scene safety construction area, and intelligent bracelet equipment sets up respectively on one's body each constructor in the safety construction scope for the work order that sends to staff transmission backstage system, and can fix a position staff's position, transmit positional information to the backstage system in real time.

3. The information sharing system is used as a communication method through an LoRa technology and is used for transmitting traffic operation construction information and accident information to a vehicle-mounted navigation system of a vehicle running on a road or a navigation system on a driver mobile phone.

4. The background system can analyze the vehicle distance information detected by the front-end device, and changes the early warning grade when various emergency situations occur.

The second step is that: pre-device installation survey

Taking highway maintenance as an example, a sensor detection area is close to a construction area, and the intelligent cone barrel device is placed at a safe distance of the detection area. The driving vehicle reaches the detection area of the full-time device, and the laser radar and the servo acceleration sensor monitor the vehicle in real time: speed, distance and direction of travel. And judging whether the vehicle intrudes into the construction area or not through calculation.

The laser radar and the servo type acceleration sensor are arranged on the front device, and in a detection area, when an abnormal vehicle is detected, an alarm signal is sent to an alarm system. The working personnel can rapidly leave the working area after receiving the alarm, the occurrence of safety accidents is reduced, and the moving position can be automatically controlled or controlled by a background system after the working personnel deviate from the preset position.

The third step: setting of detection value of conversion early warning level

Taking the vehicle type truck which is often found in highway maintenance work as an example, the distance traveled by the vehicle for 1 second is converted to 33.33m when the vehicle is traveling at a speed of 120 Km/Hour. The time required for the vehicle to move every 1m is 0.03S.

When the front device detects that the vehicle enters a construction area and is 500m away from the construction safety area, the early warning level is changed for secondary early warning, the safety early warning time is 15S, when the vehicle enters the construction safety area 100m or collides with the front device of the construction area, the early warning level is changed for primary early warning, and the safety early warning time is 3S.

The fourth step: emergency plan for alarm

1. 500m away from construction safety area

(1) The front device prompts alarms (flashing lights flashing at high frequency and tweets sounding at low frequency) to remind drivers of coming vehicles to pay attention to safe distances.

(2) The alarm device displays the position and speed information of a vehicle entering a construction safety area on a display screen of an intelligent bracelet of a constructor, and the three-color lamp device emits low-frequency flicker to remind the constructor to pay attention to the construction safety.

2. Is 100m away from construction safety area

(1) The front device prompts alarms (flashing lights flashing at high frequency and tweets sounding at high frequency) to remind drivers of coming vehicles to pay attention to the construction area ahead.

(2) The alarm device displays the position and speed information of the vehicle entering the construction safety area on a display screen of an intelligent bracelet of a constructor, and the three-color lamp device emits high-frequency flicker to remind the constructor to evacuate rapidly.

3. Vehicle collision with construction area

(1) The front device prompts alarms (flashing lights and high-frequency sound horns) to remind drivers of paying attention to the accident occurrence area in front, and the moving position is controlled automatically or through a background system after the drivers deviate from a preset position.

(2) The alarm device displays the position and speed information of the vehicle with an accident on a display screen of an intelligent bracelet of a constructor, and the three-color lamp device emits high-frequency flicker to remind the constructor to evacuate rapidly.

(3) The information sharing system transmits accident information to a vehicle-mounted navigation system of a vehicle running on a road or a navigation system on a driver mobile phone, and reminds the coming vehicle to pay attention to a front accident occurrence area, so that secondary accidents are prevented.

The fifth step: application effects of the System

The embodiment is applied to traffic safety monitoring of certain high-speed maintenance operation, an intelligent cone-barrel device consisting of a laser radar sensor and a servo acceleration sensor is used for detecting the running track of a vehicle at the front end of a road maintenance road in real time, the moving position can be automatically controlled or controlled through a background system after the vehicle deviates from a preset position, a construction safety region is protected, and when the system detects that the vehicle enters the construction safety range, an alarm message is sent out in time to remind a driver of an incoming vehicle of road maintenance in front of the vehicle, and accidents of rear-end collision and intrusion into the construction region are prevented; and the maintenance workers are reminded to safely evacuate before the accident happens, so that the emergency precaution before the safety accident happens is realized. And reminding surrounding vehicles after the accident, thereby preventing the occurrence of secondary accidents.

The invention is not the best known technology.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.