A highway maintenance safety early warning system and method

Abstract

The application discloses a kind of highway maintenance safety early warning system and method.The system includes: portable induction deceleration strip and OBU construction vehicle;Portable induction deceleration strip is deployed in the edge of construction warning area associated with OBU construction vehicle, for sending alarm signal to OBU construction vehicle when detecting that high-speed passing vehicle enters construction warning area;OBU construction vehicle is used for alarm prompt when receiving the alarm signal sent by portable induction deceleration strip, to guide construction personnel evacuation.The application can actively send the alarm prompt of passing vehicle breaking into construction area to construction personnel by constructing highway maintenance safety early warning system, guide construction personnel to evacuate quickly, reduce the probability of accident.

Description

Technical Field

[0001] This invention relates to the field of highway safety early warning technology, and in particular to a highway maintenance safety early warning system and method. Background Technology

[0002] Highway maintenance and management is a crucial component of expressway operation and management, and one of the main means of ensuring the high-quality service level of expressways. Expressways are characterized by high traffic volume, high vehicle speeds, and closed control systems, making maintenance and construction work significantly affected by normal traffic flow. This can increase the probability of safety accidents, thus requiring serious attention to construction safety.

[0003] Due to the long-standing influence of an emphasis on construction over maintenance, the level of highway maintenance has not kept pace with construction progress, resulting in a weak maintenance foundation that urgently needs improvement. Current safety measures for maintenance work mainly include: 1) maintenance workers wearing safety helmets, reflective vests, and other reflective clothing; 2) using construction notices, prohibition signs, warning signs, reflective traffic cones, flashing lights, arrow lights, and crash barriers. It is evident that current safety measures primarily rely on visual cues to warn drivers, without actively reminding construction workers. Problems such as untimely or inconspicuous information prompts during highway maintenance, and inadequate or untimely dissemination of accident and guidance information, persist. Summary of the Invention

[0004] This invention provides a highway maintenance safety early warning system and method that proactively issues an alarm to construction personnel when it detects a highway vehicle entering a construction area, reminding them to evacuate quickly.

[0005] According to one aspect of the present invention, a highway maintenance safety early warning system is provided, the system comprising a portable sensor speed bump and an OBU construction vehicle;

[0006] The portable inductive speed bump is deployed at the edge of the construction alarm area associated with the OBU construction vehicle, and is used to send an alarm signal to the OBU construction vehicle when a high-speed passing vehicle is detected entering the construction alarm area.

[0007] The OBU construction vehicle is used to issue an alarm when it receives an alarm signal from the portable induction speed bump, so as to guide the evacuation of construction personnel.

[0008] Optionally, the portable inductive speed bump includes a speed bump body, a pressure sensor, and a communication unit;

[0009] The speed bump body is deployed on the road surface at the edge of the construction alarm area associated with the OBU construction vehicle;

[0010] The pressure sensor is installed inside the speed bump body and is used to generate an alarm signal when the pressure reaches the pressure threshold.

[0011] The communication unit is installed on the speed bump body and is used to send the alarm signal to the OBU construction vehicle.

[0012] Optionally, the OBU construction vehicle includes a construction vehicle body, a construction end OBU, and a portable alarm.

[0013] The construction end OBU is installed on the main body of the construction vehicle and is used to send an alarm trigger signal to the portable alarm when it receives the alarm signal sent by the portable induction speed bump.

[0014] The portable alarm is installed on the main body of the construction vehicle and is used to provide an alarm prompt when the alarm trigger signal is received. The alarm prompt includes an audible alarm, a visual alarm, and / or a vibration alarm.

[0015] Optionally, the system further includes:

[0016] A mobile roadside device is used to receive construction signals and / or alarm evacuation signals from the OBU construction vehicle, and to display construction information contained in the construction signals and / or alarm evacuation information contained in the alarm evacuation signals, so as to remind passing vehicles on the highway to give way to the OBU construction vehicle. The construction information includes construction location, construction event and / or lane occupancy information.

[0017] Optionally, the mobile roadside device includes mobile roadside poles, roadside units (RSUs), and variable message signs;

[0018] The RSU is installed on the mobile roadside pole and connected to the variable message sign. It is used to receive the construction signals and / or alarm evacuation signals from the OBU construction vehicle, and to transmit the construction information contained in the construction signals and / or the alarm evacuation information contained in the alarm evacuation signals to the variable message sign.

[0019] The variable message sign, installed on the mobile roadside pole, is used to receive and display the construction information and / or the alarm evacuation information to remind passing vehicles on the highway to give way.

[0020] Optionally, the RSU is also used for:

[0021] Based on the construction information, construction early warning signals are continuously sent so that intelligent connected vehicles in highway passing vehicles within the range of the early warning signal can receive the construction early warning signals and receive early warning prompts.

[0022] Optionally, the mobile roadside device further includes:

[0023] A solar power source, installed on the mobile roadside pole, is used to supply power to the equipment installed on the mobile roadside device.

[0024] Optionally, the OBU construction vehicle is also used for:

[0025] When the OBU construction vehicle is involved in a collision, a collision accident signal is generated based on the collision accident information and sent to the mobile roadside device so that the mobile roadside device can display the collision accident information and remind passing vehicles on the highway to avoid it.

[0026] Optionally, the system also includes a cloud control platform for:

[0027] Obtain collision accident information of the OBU construction vehicle, initiate corresponding emergency response procedures based on the collision accident information, and promptly carry out accident rescue.

[0028] According to another aspect of the present invention, a method for early warning of highway maintenance safety is provided, the method comprising:

[0029] When the portable sensor speed bump detects a high-speed vehicle entering the construction alarm area associated with the OBU construction vehicle, it sends an alarm signal to the OBU construction vehicle.

[0030] When the OBU construction vehicle receives an alarm signal from the portable induction speed bump, it will issue an alarm prompt to guide the construction personnel to evacuate.

[0031] The technical solution of this invention involves constructing a highway maintenance safety early warning system that includes a portable speed bump and an OBU (On-Board Unit) construction vehicle. When the portable speed bump detects a high-speed vehicle entering the construction alarm area, it sends an alarm signal to the OBU. Upon receiving the alarm signal from the portable speed bump, the OBU provides an alert to guide construction personnel to evacuate. This invention proactively alerts construction personnel when it senses a high-speed vehicle entering the construction area and potentially causing harm, reminding them to evacuate quickly to reduce the probability of accidents and protect their lives.

[0032] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the first type of highway maintenance safety early warning system provided in Embodiment 1 of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of the second type of highway maintenance safety early warning system provided in Embodiment 1 of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the third type of highway maintenance safety early warning system provided in Embodiment 1 of the present invention;

[0037] Figure 4 This is a schematic diagram of the fourth type of highway maintenance safety early warning system provided in Embodiment 1 of the present invention;

[0038] Figure 5 This is a schematic diagram of the second structure of the fifth type of highway maintenance safety early warning system provided in Embodiment 1 of the present invention;

[0039] Figure 6 This is a flowchart of a highway maintenance safety early warning method provided in Embodiment 2 of the present invention. Detailed Implementation

[0040] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0041] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] Example 1

[0043] Figure 1 This is a schematic diagram of a highway maintenance safety early warning system provided in Embodiment 1 of the present invention. This embodiment is applicable to road maintenance and can be used on roads requiring maintenance. The highway maintenance safety early warning system can be implemented in hardware and / or software. Figure 1 As shown, the system may include a portable inductive speed bump 10 and an OBU construction vehicle 20.

[0044] The portable inductive speed bump 10 can be deployed at the edge of the construction alarm area associated with the OBU construction vehicle 20 to send an alarm signal to the OBU construction vehicle 20 when a high-speed passing vehicle is detected entering the construction alarm area.

[0045] In this embodiment, a communication device can be installed on the portable inductive speed bump 10, and correspondingly, a corresponding communication device can also be installed on the OBU construction vehicle 20, so that the portable inductive speed bump 10 and the OBU construction vehicle 20 can exchange information.

[0046] In this embodiment, if a section of a highway needs maintenance, the construction personnel can drive the OBU construction vehicle 20 to that section and define the area within a certain distance from the OBU construction vehicle 20 in the direction of oncoming traffic as the construction alarm zone. The portable inductive speed bump 10 can be placed at the edge of the construction alarm zone. For example, if a section of a highway with traffic flowing from west to east needs maintenance, the construction personnel can drive the OBU construction vehicle 20 to a certain point on that section and define the area within 100 meters to the west of the OBU construction vehicle 20 as the construction alarm zone. The portable inductive speed bump 10 can be placed 100 meters to the west of the OBU construction vehicle 20.

[0047] In practical applications, when a high-speed vehicle passes over the portable sensor speed bump 10, it can be considered that the high-speed vehicle has entered the construction alarm area associated with the OBU construction vehicle 20. At this time, the portable sensor speed bump 10 can generate an alarm signal and send it to the OBU construction vehicle 20. At the same time, when the high-speed vehicle passes over the portable sensor speed bump 10, there will be a certain amount of resistance and vibration, which can slow down the vehicle and remind the driver to pay attention and avoid the obstacle.

[0048] The OBU construction vehicle 20 can be used to issue an alarm when it receives an alarm signal sent by the portable induction speed bump 10, so as to guide the evacuation of construction personnel.

[0049] In practical applications, an alarm device can be installed on the OBU construction vehicle 20. When the OBU construction vehicle 20 receives an alarm signal sent by the portable induction speed bump 10, the alarm device can issue an alarm prompt to attract the attention of construction personnel and help them evacuate in time.

[0050] The technical solution of this invention constructs a highway maintenance safety early warning system comprising a portable speed bump, a mobile roadside unit, and an OBU (On-Board Unit) construction vehicle. When the portable speed bump detects a high-speed vehicle entering the construction alarm area, it sends an alarm signal to the OBU. Upon receiving the alarm signal from the portable speed bump, the OBU provides an alert to guide the evacuation of construction personnel and sends an alarm evacuation signal to the mobile roadside unit. The mobile roadside unit displays the alarm evacuation information contained in the alarm evacuation signal to remind other high-speed vehicles to give way. This invention proactively alerts construction personnel when it senses a high-speed vehicle entering the construction area and potentially causing harm, prompting them to evacuate quickly to reduce the probability of accidents and protect their lives.

[0051] Figure 2 This is a schematic diagram of the structure of the second type of highway maintenance safety early warning system provided in Embodiment 1 of the present invention. Figure 2 As shown, optionally, the portable inductive speed bump 10 may specifically include a speed bump body 11, a pressure sensor 12, and a communication unit 13.

[0052] The speed bump body 11 can be deployed on the road surface at the edge of the construction alarm area associated with the OBU construction vehicle.

[0053] Pressure sensor 12 is installed inside the speed bump body 11 and is used to generate an alarm signal when the pressure reaches the pressure threshold.

[0054] The communication unit 13 is installed on the speed bump body 11 and is used to send alarm signals to the OBU construction vehicle 30.

[0055] In this embodiment, a pressure threshold can be preset, which can be the minimum pressure exerted on the road surface by a typical vehicle. A pressure sensor 12 and a communication unit 13 can be installed inside the portable inductive speed bump 10. When a high-speed vehicle passes over the portable inductive speed bump 10, the pressure sensor 12 can detect the corresponding pressure. If this pressure value exceeds the preset pressure threshold, the pressure sensor 12 can generate an alarm signal, which is then sent to the OBU construction vehicle 20 by the communication unit 13.

[0056] like Figure 2 As shown, the OBU construction vehicle 20 may include a construction vehicle body 21, a construction end OBU 22, and a portable alarm 23.

[0057] The construction end OBU 22 can be installed on the main body 21 of the construction vehicle and is used to send an alarm trigger signal to the portable alarm 23 when it receives an alarm signal sent by the portable induction speed bump 10.

[0058] The portable alarm 23 can be installed on the main body 21 of the construction vehicle to provide an alarm prompt when an alarm trigger signal is received. The alarm prompt includes an audible alarm, a visual alarm, and / or a vibration alarm.

[0059] In this embodiment, the portable alarm 23 can be a sound alarm, a photoelectric alarm, a vibration alarm, or a combination of the above. When the construction end OBU 22 receives the alarm signal sent by the portable induction speed bump 10, it can send an alarm trigger signal to the portable alarm 23 to trigger the portable alarm 23, and the portable alarm 23 can then provide the corresponding alarm prompt.

[0060] Figure 3 This is a schematic diagram of the structure of the third type of highway maintenance safety early warning system provided in Embodiment 1 of the present invention, as shown below. Figure 3 As shown, the highway maintenance safety early warning system provided in this embodiment of the invention may further include a mobile roadside device 30; the mobile roadside device 30 may be used to receive construction signals and / or alarm evacuation signals from the OBU construction vehicle 20, and display the construction information contained in the construction signal and / or the alarm evacuation information contained in the alarm evacuation signal, so as to remind passing vehicles on the highway to give way to the OBU construction vehicle 20, wherein the construction information includes construction location, construction event and / or lane occupation information.

[0061] In this embodiment, an OBU (On-Board Unit) can be installed on the OBU construction vehicle 20. An OBU is generally a microwave device that communicates with an RSU (RoadSide Unit) using DSRC (Dedicated Short Range Communication) technology. Correspondingly, an RSU can be installed on the mobile roadside unit 30. Additionally, a display screen for displaying text information can also be installed on the mobile roadside unit 30.

[0062] In practical applications, the mobile roadside unit 30 can acquire construction signals from the OBU construction vehicle 20. The construction information in these signals can include the construction location of the OBU construction vehicle 20, construction events, and lane occupancy information. The construction signals from the OBU construction vehicle 20 can be generated by the OBU construction vehicle 20 itself based on its own construction information, or they can be input by construction technicians from the backend. Since construction personnel primarily perform road maintenance around the OBU construction vehicle 20, the location of the OBU construction vehicle 20 can be used as an approximate location for the construction personnel. Upon receiving a construction signal from the OBU construction vehicle 20, the mobile roadside unit 30 can display the construction information contained in the signal on a screen, reminding oncoming vehicles to avoid the OBU construction vehicle 20 and the construction personnel around it. When the OBU construction vehicle 20 receives an alarm signal from the portable speed bump 10, it can generate an alarm evacuation signal and send it to the mobile roadside unit 30. When the mobile roadside device 30 receives an alarm evacuation signal, it can obtain the alarm evacuation information in the alarm evacuation signal and display the alarm evacuation information on the display screen to remind other highway vehicles to give way to the OBU construction vehicle 20 and highway vehicles that have entered the construction alarm area.

[0063] Figure 4 This is a structural schematic diagram of the fourth type of highway maintenance safety early warning system provided in Embodiment 1 of the present invention. Figure 4 As shown, the mobile roadside device 30 may specifically include a mobile roadside pole 31, a roadside unit (RSU) 32, and a variable message sign 33.

[0064] RSU 32 can be installed on the mobile roadside pole 31 and connected to the variable message sign 33. It is used to receive construction signals and / or alarm evacuation signals from the OBU construction vehicle 20, and to transmit the construction information contained in the construction signal and / or the alarm evacuation information contained in the alarm evacuation signal to the variable message sign 33.

[0065] The variable message sign 33 can be installed on the movable roadside pole 31 to receive and display construction information and / or alarm evacuation information to remind passing vehicles on the highway to pay attention and avoid it.

[0066] In this embodiment, the roadside unit (RSU) 32 and the variable message sign (VMS) 33 can be installed at suitable locations on the movable roadside pole 31. The RSU 32 and the VMS 33 can communicate with each other via a network cable or similar connection. The VMS 33 can be a display screen or similar device capable of displaying text information.

[0067] Optionally, RSU 32 can also be used to continuously send construction warning signals based on construction information, so that intelligent connected vehicles in highway passing vehicles within the range of the warning signal can receive the construction warning signals and receive warning prompts.

[0068] In this embodiment, the RSU 32 can continuously send construction warning signals in the form of broadcasts based on construction information. When a smart connected vehicle equipped with an OBU enters the warning signal transmission range of the RSU 32, it can receive the construction warning signal and provide a warning to remind the driver to pay attention to the construction situation ahead.

[0069] like Figure 4 As shown, the mobile roadside device 30 may also include a solar power source 34, which can be installed on the mobile roadside pole 31 to supply power to the equipment installed on the mobile roadside device 30.

[0070] In this embodiment, a solar power supply 34 can be installed on the base of the movable roadside pole 31 or at other locations to power equipment such as the roadside unit 32 and the variable message sign 33.

[0071] Optionally, the OBU construction vehicle 20 can also be used to: generate a collision accident signal based on the collision accident information when the OBU construction vehicle 20 is involved in a collision accident, and send the collision accident signal to the mobile roadside device 30 so that the mobile roadside device 30 can display the collision accident information and remind passing vehicles on the highway to avoid it.

[0072] In this embodiment, if a passing vehicle enters the construction alarm area and collides with the OBU construction vehicle 20, the construction end OBU 22 on the OBU construction vehicle 20 can promptly generate a collision accident signal and send it to the mobile roadside device 30. After receiving the collision accident signal, the RSU 32 of the mobile roadside device 30 controls the variable message sign 33 to display the collision accident information in the collision accident signal, reminding other high-speed passing vehicles to avoid it.

[0073] Figure 5 This is a schematic diagram of the second structure of the fifth type of highway maintenance safety early warning system provided in Embodiment 1 of the present invention, as shown below. Figure 5As shown, the highway maintenance safety early warning system may also include a cloud control platform 40, which is used to obtain collision accident information of the OBU construction vehicle 20, and to initiate corresponding emergency response procedures based on the collision accident information to carry out accident rescue in a timely manner.

[0074] In this embodiment, if the OBU construction vehicle 20 is involved in a collision, the mobile roadside device 30 can report the collision information to the cloud control platform 40. When the cloud control platform 40 receives the collision information, it can initiate the corresponding emergency response process and carry out accident rescue in a timely manner.

[0075] Example 2

[0076] Figure 6 This is a flowchart of a highway maintenance safety early warning method provided in Embodiment 2 of the present invention. The method described in this embodiment can be applied to the highway maintenance safety early warning system in the above embodiments. Figure 6 As shown, the method includes:

[0077] When the S610 portable sensor speed bump detects a high-speed vehicle entering the construction alarm area associated with the OBU construction vehicle, it sends an alarm signal to the OBU construction vehicle.

[0078] When S620 and OBU construction vehicles receive an alarm signal from the portable sensor speed bump, they will issue an alarm to guide construction personnel to evacuate.

[0079] The technical solution of this invention involves a portable speed bump sending an alarm signal to an OBU (On-Board Unit) construction vehicle when it detects a high-speed vehicle entering the construction alarm area. Upon receiving the alarm signal, the OBU construction vehicle issues an alarm to guide construction personnel to evacuate. This invention proactively alerts construction personnel when it senses a high-speed vehicle entering the construction area and potentially causing harm, reminding them to evacuate quickly to reduce the probability of accidents and protect their lives.

[0080] Optionally, when the portable sensor speed bump detects a high-speed vehicle entering the construction alarm zone associated with the OBU construction vehicle, it sends an alarm signal to the OBU construction vehicle. This can be achieved in the following ways:

[0081] The pressure sensor installed inside the speed bump generates an alarm signal when the pressure reaches the pressure threshold.

[0082] The communication unit installed on the speed bump body sends the alarm signal to the OBU construction vehicle.

[0083] Optionally, the OBU construction vehicle can issue an alarm when it receives an alarm signal from the portable sensor speed bump to guide the evacuation of construction personnel. This can be achieved in the following ways:

[0084] When the OBU in the OBU construction vehicle receives the alarm signal sent by the portable induction speed bump, it sends an alarm trigger signal to the portable alarm in the OBU construction vehicle.

[0085] The portable alarm will provide an alarm prompt when it receives an alarm trigger signal, including audible alarm, visual alarm and / or vibration alarm.

[0086] Optionally, the highway maintenance safety early warning method provided in this embodiment may further include: a mobile roadside device receiving construction signals and / or alarm evacuation signals from OBU construction vehicles, displaying construction information contained in the construction signals and / or alarm evacuation information contained in the alarm evacuation signals, so as to remind passing vehicles on the highway to give way to OBU construction vehicles, wherein the construction information includes construction location, construction event and / or lane occupancy information.

[0087] Optionally, the mobile roadside unit receives construction signals and / or alarm / evacuation signals from the OBU construction vehicle, and displays the construction information contained in the construction signals and / or the alarm / evacuation information contained in the alarm / evacuation signals. This can be achieved in the following ways:

[0088] The RSU in the mobile roadside pole receives construction signals and / or alarm evacuation signals from the OBU construction vehicle, and transmits the construction information contained in the construction signals and / or the alarm evacuation information contained in the alarm evacuation signals to the variable message sign in the mobile roadside pole.

[0089] Variable message signs receive and display construction information and / or alarm evacuation information to remind passing vehicles on the highway to take evasive action.

[0090] Optionally, the highway maintenance safety early warning method provided in this embodiment may further include: the RSU in the mobile roadside device continuously sends a construction early warning signal according to the construction information, so that intelligent connected vehicles in the highway passing vehicles within the range of the early warning signal can receive the construction early warning signal and provide early warning prompts.

[0091] Optionally, the highway maintenance safety early warning method provided in this embodiment may further include:

[0092] When an OBU construction vehicle is involved in a collision, the OBU construction vehicle generates a collision signal based on the collision information and sends the collision signal to a mobile roadside device, so that the mobile roadside device can display the collision information and remind passing vehicles on the highway to avoid the collision.

[0093] Optionally, the highway maintenance safety early warning method provided in this embodiment may further include:

[0094] The cloud control platform obtains collision accident information of the OBU construction vehicle, initiates the corresponding emergency response procedures based on the collision accident information, and promptly carries out accident rescue.

[0095] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0096] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A high-speed road maintenance safety warning system, characterized in that, The system comprises a portable inductive speed bump and an OBU construction vehicle; The portable inductive speed bump is arranged at the edge of a construction warning area associated with the OBU construction vehicle, and is configured to send a warning signal to the OBU construction vehicle when detecting that a high-speed passing vehicle enters the construction warning area; The OBU construction vehicle is configured to send an alarm prompt when receiving the warning signal sent by the portable inductive speed bump, so as to guide the construction personnel to evacuate; The system further comprises: A mobile roadside device configured to receive a construction signal and / or an alarm evacuation signal of the OBU construction vehicle, and display construction information contained in the construction signal and / or alarm evacuation information contained in the alarm evacuation signal, so as to remind the high-speed passing vehicle to avoid the OBU construction vehicle, wherein the construction information comprises construction position, construction event and / or lane occupation information; The mobile roadside device comprises a roadside unit (RSU), and the RSU is configured to continuously send a construction early warning signal in a broadcast form according to the construction information, so that an intelligent connected vehicle in a high-speed passing vehicle within a range of the early warning signal receives the construction early warning signal and sends an early warning prompt; The portable inductive speed bump comprises a speed bump main body, a pressure sensor and a communication unit; The speed bump main body is arranged on the ground of a road at the edge of a construction warning area associated with the OBU construction vehicle; The pressure sensor is installed in the speed bump main body and is configured to generate an alarm signal when the pressure borne reaches a pressure threshold; The communication unit is arranged on the speed bump main body and is configured to send the alarm signal to the OBU construction vehicle; The OBU construction vehicle comprises a construction vehicle main body, a construction end OBU and a portable alarm; The construction end OBU is installed on the construction vehicle main body and is configured to send an alarm trigger signal to the portable alarm when receiving the alarm signal sent by the portable inductive speed bump; The portable alarm is installed on the construction vehicle main body and is configured to send an alarm prompt when receiving the alarm trigger signal, wherein the alarm prompt comprises a sound alarm, a light alarm and / or a vibration alarm.

2. The system of claim 1, wherein, The mobile roadside device comprises a mobile roadside pole and a variable information board; The RSU is installed on the mobile roadside pole and is connected with the variable information board, and is configured to receive a construction signal and / or an alarm evacuation signal of the OBU construction vehicle, and transmit construction information contained in the construction signal and / or alarm evacuation information contained in the alarm evacuation signal to the variable information board; The variable information board is installed on the mobile roadside pole and is configured to receive and display the construction information and / or the alarm evacuation information, so as to remind the high-speed passing vehicle to pay attention to avoiding.

3. The system of claim 2, wherein, The mobile roadside device further comprises: A solar power supply installed on the mobile roadside pole and configured to supply power to devices installed on the mobile roadside device.

4. The system of claim 1, wherein, The OBU construction vehicle is further configured to When the OBU construction vehicle has a collision accident, a collision accident signal is generated according to the collision accident information, and the collision accident signal is sent to the mobile roadside device to make the mobile roadside device display the collision accident information and remind the high-speed passing vehicle to avoid.

5. The system of claim 4, wherein, The system further comprises a cloud control platform, which is configured to: Obtain the collision accident information of the OBU construction vehicle, and start a corresponding emergency handling process according to the collision accident information to rescue the accident in time.

6. A method for safety warning of expressway maintenance, applied to the safety warning system of expressway maintenance according to any one of claims 1-5, characterized in that, Comprise: When the portable induction deceleration strip detects that a high-speed passing vehicle enters a construction warning area associated with the OBU construction vehicle, the portable induction deceleration strip sends a warning signal to the OBU construction vehicle; When the OBU construction vehicle receives the warning signal sent by the portable induction deceleration strip, the OBU construction vehicle gives an alarm prompt to guide the evacuation of construction personnel; The method further comprises: The mobile roadside device receives the construction signal and / or the alarm evacuation signal of the OBU construction vehicle, displays the construction information contained in the construction signal and / or the alarm evacuation information contained in the alarm evacuation signal, and reminds the high-speed passing vehicle to avoid the OBU construction vehicle, wherein the construction information includes construction position, construction event and / or lane occupation information; The roadside unit (RSU) in the mobile roadside device continuously sends a construction warning signal in a broadcast form according to the construction information, so that the intelligent network-connected vehicle in the high-speed passing vehicle within the warning signal sending range receives the construction warning signal and gives a warning prompt; When the portable induction deceleration strip detects that a high-speed passing vehicle enters a construction warning area associated with the OBU construction vehicle, the portable induction deceleration strip sends a warning signal to the OBU construction vehicle, comprising: The pressure sensor installed in the deceleration strip main body generates an alarm signal when the pressure borne reaches a pressure threshold; The communication unit arranged on the deceleration strip main body sends the alarm signal to the OBU construction vehicle; When the OBU construction vehicle receives the alarm signal sent by the portable induction deceleration strip, the OBU construction vehicle gives an alarm prompt to guide the evacuation of construction personnel, comprising: When the construction end OBU in the OBU construction vehicle receives the alarm signal sent by the portable induction deceleration strip, the construction end OBU sends an alarm trigger signal to the portable alarm in the OBU construction vehicle; When the portable alarm receives the alarm trigger signal, the portable alarm gives an alarm prompt, wherein the alarm prompt includes sound alarm, light alarm and / or vibration alarm.

Images