CN112002104A - Collision alarm system of highway guardrail board - Google Patents
Collision alarm system of highway guardrail board Download PDFInfo
- Publication number
- CN112002104A CN112002104A CN202010669823.9A CN202010669823A CN112002104A CN 112002104 A CN112002104 A CN 112002104A CN 202010669823 A CN202010669823 A CN 202010669823A CN 112002104 A CN112002104 A CN 112002104A
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- optical fiber
- guardrail plate
- position information
- loss
- highway
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/187—Machine fault alarms
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
- G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
Abstract
The invention discloses a collision alarm system of a highway guardrail plate, which comprises: the sensing optical fiber is arranged on a guardrail plate of the expressway; the optical time domain reflectometer is connected with the sensing optical fiber and is used for detecting the position information of the loss of the sensing optical fiber; the monitoring equipment is connected with the optical time domain reflectometer, receives the position information of the loss of the sensing optical fiber and displays the position information of the guardrail plate corresponding to the position information of the loss of the sensing optical fiber on a highway map; and the plurality of portable alarm devices connected with the monitoring device receive the guardrail plate position information corresponding to the position information of the loss of the sensing optical fiber. According to the invention, the optical time domain reflectometer is used for detecting the position information of the loss of the sensing optical fiber arranged on the expressway guardrail plate, the monitoring equipment is used for converting the position information of the loss of the sensing optical fiber into corresponding position information of the guardrail plate to be displayed and sending the position information to the plurality of portable alarm equipment, so that the automatic detection and intelligent alarm of the damage of the guardrail plate are realized, and the working efficiency of workers is improved.
Description
Technical Field
The invention belongs to the technical field of on-line monitoring and detection of highway guardrail plates, and particularly relates to a collision alarm system of a highway guardrail plate.
Background
The total mileage of the Chinese expressway reaches 14.3 kilometers (the end of 2018 years), and is stably located in the first place in the world. Due to safety requirements, the highway is additionally provided with a fence and a guardrail plate. These are one of the basic safety facilities for the highway to operate normally. Accidents occur every day in the operation process of the expressway, and the damages to the fence and the guardrail plate also occur frequently. At present, the damage management and control of the guardrail plate are mainly realized through two ways: firstly, the on-site confirmation is carried out according to the report of the traffic accident, and secondly, the manual inspection is carried out. The former does not report a traffic accident unless a serious traffic accident or a collision involving two or more vehicles occurs. If a single vehicle collides, the guardrail plate or the guardrail plate is scratched and is not reported often, and only manual inspection can be used, but the method is time-consuming, labor-consuming and large in workload. The highway guardrail plate is used for guarding lives of residents around a highway and drivers, and is used for discovering the damage of the guardrail plate in time and repairing the damage in time and ensuring and guarding the lives of the residents and the drivers, so that the damage of the guardrail plate can be discovered in time, and the highway guardrail plate is particularly important for accurately positioning places.
Therefore, there is a need for a technique that enables intelligent detection of damage to highway balustrade panels.
Disclosure of Invention
The invention aims to provide an expressway guardrail plate collision alarm system capable of intelligently detecting damage of an expressway guardrail plate.
In order to achieve the above object, the present invention provides a collision warning system for a highway guardrail plate, comprising: the sensing optical fiber is arranged on a guardrail plate of the highway; the optical time domain reflectometer is connected with the sensing optical fiber and is used for detecting the position information of the loss of the sensing optical fiber; the monitoring equipment is connected with the optical time domain reflectometer, receives the position information of the loss of the sensing optical fiber and displays the position information of the guardrail plate corresponding to the position information of the loss of the sensing optical fiber on a highway map; and the plurality of portable alarm devices are connected with the monitoring device and receive guardrail plate position information corresponding to the position information of the loss of the sensing optical fiber.
Optionally, the sensing optical fiber is bonded, bound or magnetically attracted to an existing guardrail plate on the highway.
Optionally, when the guardrail plate is newly built, the sensing optical fiber is installed at a reserved installation position of the newly built guardrail plate.
Optionally, the optical time domain reflectometer and the monitoring device are arranged in a toll station or a relay station.
Optionally, the optical time domain reflectometer includes a low resolution sampling point operating state and a high resolution sampling point operating state.
Optionally, when the optical time domain reflectometer detects that the loss of the sensing optical fiber is greater than a preset threshold value in the low-resolution sampling point working state, the high-resolution sampling point working state is started, and the position information of the optical fiber loss is acquired.
Optionally, the optical time domain reflectometer obtains attenuated information by using backscattered light generated when light propagates in the sensing optical fiber, and detects a loss of the sensing optical fiber.
Optionally, the low-resolution sampling point working state and the high-resolution sampling point working state are adjusted according to seasons and time.
Optionally, the portable alarm device is connected with the monitoring device in a wireless communication manner, and is in bidirectional communication.
Optionally, the optical time domain reflectometer compares the optical fiber information detected at the current time interval with the optical fiber information acquired at the previous time interval, and acquires the optical fiber loss information according to the comparison result, where the interval time between the current time interval and the previous time interval is a preset time interval.
Optionally, the optical fiber is arranged as a ring-shaped wiring according to the length, and a dual-wavelength filtering method or an optical switch is adopted to switch the output port.
The invention has the beneficial effects that: according to the highway guardrail plate collision alarm system, the sensing optical fibers are arranged on the guardrail plate of the highway, the position information of the loss of the sensing optical fibers is detected through the optical time domain reflectometer and is sent to the monitoring equipment, the monitoring equipment converts the position information of the loss of the sensing optical fibers into the corresponding position information of the damaged guardrail plate to be displayed and sends the position information to the plurality of portable alarm equipment, so that highway maintenance personnel or workers close to the site are reminded to reasonably arrange, check and maintain, automatic detection and intelligent alarm of the damage of the guardrail plate are realized, the workers can timely feed back maintenance conditions through the terminal, and the working efficiency of the workers is improved.
The present invention has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings. Wherein like reference numerals generally refer to like parts throughout the exemplary embodiments of the invention.
Fig. 1 shows a block diagram of a collision warning system for a highway guardrail plate according to an embodiment of the present invention.
Fig. 2 shows a block diagram of a collision warning system for a highway guardrail plate according to still another embodiment of the present invention.
Fig. 3 shows a ring connection manner of a sensing optical fiber of a highway guardrail plate collision warning system according to one embodiment of the invention.
Fig. 4 is a diagram illustrating a location of a sensing optical fiber of a collision warning system for a highway guardrail plate according to an embodiment of the present invention.
Description of reference numerals:
1. a sensing optical fiber; 2. an optical time domain reflectometer; 3. monitoring equipment; 4. a portable alarm device; 5. a guardrail plate; 6. a fixed point; 7, monitoring a central module; 8. a power supply module; 9. a communication module; 10. an electrically controlled optical switch; 11. a loop 1 port; 12. loop 2 port.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The present invention according to the present invention provides a collision warning system for a highway guardrail plate, comprising: the sensing optical fiber is arranged on a guardrail plate of the highway; the optical time domain reflectometer is connected with the sensing optical fiber and is used for detecting the position information of the loss of the sensing optical fiber; the monitoring equipment is connected with the optical time domain reflectometer, receives the position information of the loss of the sensing optical fiber and displays the position information of the guardrail plate corresponding to the position information of the loss of the sensing optical fiber on a highway map; and the portable alarm devices are connected with the monitoring device and receive guardrail plate position information corresponding to the position information of the loss of the sensing optical fiber.
The optical fibers are distributed on two sides of the road. Each side can be independently used as one path, and the optical fibers on the two sides of the path can be connected into a loop to be monitored simultaneously. In particular, the loop monitoring can be performed by using light sources with different wavelengths at the input end and the output end, adding a filter in front of the detector, or alternatively selecting an input port through an optical switch at the input end, so that the loop monitoring has the advantage that a breakpoint does not affect other positions.
Specifically, the sensing optical fibers are arranged on the guardrail plates of the highway, the sensing optical fibers of the guardrail plates on one side of the highway can be independently used as a reference, and the sensing optical fibers on the guardrail plates on the two sides of the highway can be connected into a loop for monitoring. Considering that the damage of the guardrail plate is high-intensity collision, an Optical Time Domain Reflectometer (OTDR) is adopted to monitor the loss of the sensing optical fiber, and whether the fence is scratched or not is judged by colliding the guardrail plate to generate loss on the sensing optical fiber. When the optical time domain reflectometer detects that the sensing optical fiber is damaged, specific position information of the loss is determined, the specific position information of the loss is sent to the monitoring equipment, and the monitoring equipment converts the specific position information of the loss into specific position information of a guardrail plate on the highway. The monitoring equipment receives the position information of the loss of the sensing optical fiber detected by the optical time domain reflectometer, displays the position information on the highway map and marks the position information, so that workers can timely acquire the damage information of the guardrail plate, and can cancel the damage mark through the terminal feedback condition after the workers arrive at the site for confirmation or maintenance, thereby improving the working efficiency of the workers.
Portable alarm device is equipped with satellite positioning module, monitoring facilities is according to portable alarm device's real-time positional information, do the comparison with portable alarm device's real-time positional information and guardrail board damage positional information, the concrete positional information who will correspond the guardrail board through the comparison sends for the portable alarm device that is nearest apart from guardrail board damage position, portable alarm device's carrier receives behind the alarm information, can confirm and send confirmation information to monitoring facilities through portable alarm device, monitoring facilities receives behind this information and shows, remind existing staff to go to look over, the staff of being convenient for rationally arranges work. The portable alarm device can also feed back the field condition and the maintenance condition to the monitoring device. If no portable alarm device is carried out, the vehicle is dispatched to the monitoring point nearest to the damaged position to be checked and maintained immediately.
In one example, upon confirmation of the nearest portable alarm device, navigation is automatically turned on, leading the carrier of the portable alarm device to a specific location of the guardrail panel injury.
Before the alarm system is used, the length of the optical fiber is corresponding to the position of a road, particularly the position of a key marker near the road. The background monitoring equipment receives the position information of the loss of the sensing optical fiber detected by the optical time domain reflectometer, determines the nearby marker information corresponding to the position, and finally provides the nearby marker information on the highway map displaying the accident position, so that the linkage personnel can be conveniently disposed, and the fault point can be quickly found.
In future intelligent highway application, the system reserves the functions of broadcasting warning to adjacent vehicles, requesting the adjacent vehicles to take pictures through a vehicle monitoring instrument and determining whether to take out a trailer, a police car and an ambulance through evidence when a serious accident occurs.
According to an exemplary embodiment, the highway guardrail plate collision alarm system detects the position information of the loss of the sensing optical fiber through the optical time domain reflectometer by arranging the sensing optical fiber on the guardrail plate of the highway, and sends the position information to the monitoring equipment, the monitoring equipment converts the position information of the loss of the sensing optical fiber into the position information of the corresponding damaged guardrail plate to be displayed, marks the position information and sends the position information to the plurality of portable alarm equipment to remind the highway maintenance personnel or the workers close to the site to reasonably arrange, check and maintain, so that the automatic detection and intelligent alarm of the damage of the guardrail plate are realized, after the workers arrive at the site to confirm or maintain, the condition can be fed back through the terminal, the damage mark is cancelled, and the working efficiency of the workers is improved.
As an alternative scheme, the collision alarm system of the highway guardrail plate further comprises a monitoring center module, the monitoring center module is connected with monitoring equipment, and the monitoring center module judges the damage level of the highway guardrail plate according to the change degree of the optical fiber loss.
The monitoring center module is connected with monitoring facilities, and the monitoring center judges the impaired grade of front end according to the change degree intelligence of optical fiber loss, and different linkage plans are corresponded to different grades, and emergent plan divide into (1) highest grade plan according to the crisis degree: informing relevant departments, such as a public security fire-fighting 120 ambulance to go to a place of business at the same time, and performing emergency rescue and emergency accident treatment; (2) medium grade scheme: the maintenance personnel go to the site to check immediately; (3) low-grade protocol: suspected guardrail plates are damaged or slightly scratched without immediate treatment. After the workers at the two latter preplan mobile terminals arrive at the site, the event grade can be redefined according to the site information collected by the mobile terminals and returned to the monitoring center and the command emergency hall, and the next process is carried out.
As an alternative, the optical time domain reflectometer compares the optical fiber information detected at the current time interval with the optical fiber information acquired at the previous time interval, and obtains the optical fiber loss information according to the comparison result, wherein the interval time between the current time interval and the previous time interval is a preset time interval.
Specifically, the optical time domain reflectometer compares optical fiber information detected in a current time period with optical fiber loss information acquired in a previous time period, obtains optical fiber newly-increased loss information according to a comparison result, determines whether optical fibers are lost according to the optical fiber newly-increased loss information, and the preset time period can be set through software.
Alternatively, the sensing optical fiber is adhered, bound or magnetically attracted to an existing guardrail plate on the highway.
Specifically, the highway guardrail plate is attached with single or many sensing optical fiber, sets up the fixed point on the guardrail plate, can utilize the bonding, binds or magnetism is inhaled with sensing optical fiber and is connected on the fixed point of current guardrail plate, need not change current guardrail plate, and it is convenient to install.
Alternatively, when the guardrail plate is newly built, the sensing optical fiber is arranged at the reserved installation position of the newly built guardrail plate.
Specifically, the sensing optical fiber is installed on a newly-built guardrail plate in a mode of being buried in a reserved installation position.
As an alternative, the optical time domain reflectometer, the monitoring device is provided in a toll station or a relay station.
In particular, the optical time domain reflectometer and monitoring equipment can be placed at toll stations, or highway service stations, or other designated highway locations. If the distance between toll stations is too long, relay stations are arranged on two sides of a road for monitoring. Particularly, if the monitoring distance is too long, a relay station can be arranged below the high-speed bridge and is provided with a wind energy, electric energy and solar energy power supply device and 5G equipment, and 5G signals are connected into the cloud and then transmitted back to a designated monitoring center through the cloud.
Alternatively, the optical time domain reflectometer includes a low resolution sampling point operating state and a high resolution sampling point operating state.
Specifically, for long-time monitoring, the optical time domain reflectometer can be set in two working states, namely a low-resolution sampling point (LS) working state and a high-resolution sampling point (HS).
As an alternative, when the optical time domain reflectometer detects that the loss of the sensing optical fiber is greater than a preset threshold value in the low-resolution sampling point working state, the high-resolution sampling point working state is started to obtain the position information of the optical fiber loss.
Specifically, the optical time domain reflectometer comprises a low resolution sampling point (LS) working state and a high resolution sampling point (HS) working state. When long-time monitoring is carried out, the optical time domain reflectometer is firstly set in a low-resolution sampling point (LS) working state, and is then set in a high-resolution sampling point (HS) working state after the loss of the sensing optical fiber is detected, more accurate specific position information of the loss of the sensing optical fiber is obtained through the high-resolution sampling point (HS) working state and is sent to monitoring equipment, the monitoring equipment confirms the traveling direction of a vehicle according to the specific position, and early warning information is sent to an expressway exit in the driving direction according to the traveling direction. According to the distance between each outlet and the scratch accident, the time of reaching the outlet is estimated according to the speed limit, and the suspicious vehicle is photographed and evidence is obtained through the camera at the outlet. Meanwhile, vehicles are dispatched from the nearest monitoring points to carry out on-site evidence obtaining.
Alternatively, the optical time domain reflectometer uses backscattered light generated when light propagates through the sensing fiber to obtain attenuation information, and detects the loss of the sensing fiber.
Specifically, light emitted by the optical time domain reflectometer propagates in the sensing optical fiber to generate scattering, if the sensing optical fiber is broken or damaged, fresnel reflection or enhanced backward rayleigh scattering is generated, the intensity of reflection or scattering is in direct proportion to the optical power passing through the point, and the attenuation of the optical fiber point is reflected, so that the breakpoint position of the sensing optical fiber, namely the position information of loss is judged according to the condition of the reflected and transmitted scattered light. It can also be said that the damage of the guardrail plate is judged according to the abnormal change of the light signal of the collision point.
Alternatively, the low-resolution sampling point operating state and the high-resolution sampling point operating state are adjusted according to seasons and time.
Specifically, the standard of the working state of the high-resolution sampling point (HS) and the working state of the low-resolution sampling point (LS) as references needs to be adjusted in different seasons and time periods, that is, the adjustment can be performed according to the seasons and time, and the loss change caused by the climate change is determined for the overall loss change of the line.
Alternatively, the portable alarm device and the monitoring device are connected in a wireless communication mode and are in two-way communication.
Specifically, the portable alarm device and the monitoring device communicate through 4G or 5G, so that the portable alarm device is convenient and quick to use and can communicate in two directions.
Specifically, the optical fiber is arranged as a ring-shaped wiring according to the length, and the output port is switched by using a dual-wavelength filtering method or an optical switch.
Specifically, the optical fiber can be set to be annular wiring according to the length, dual-wavelength filtering is adopted, or an optical switch switches an output port, and the whole process is still monitored under the condition that a breakpoint exists.
Examples
Fig. 1 shows a block diagram of a collision warning system for a highway guardrail plate according to an embodiment of the present invention. Fig. 2 shows a block diagram of a collision warning system for a highway guardrail plate according to still another embodiment of the present invention. Fig. 3 shows a ring connection manner of a sensing optical fiber of a highway guardrail plate collision warning system according to one embodiment of the invention. Fig. 4 is a diagram illustrating a location of a sensing optical fiber of a collision warning system for a highway guardrail plate according to an embodiment of the present invention.
Referring to fig. 1, 2, 3 and 4, the collision warning system for a highway guardrail plate includes: the sensing optical fiber 1 is arranged on a guardrail plate 5 of the highway; the optical time domain reflectometer 2 is connected with the sensing optical fiber 1 and is used for detecting the position information of the loss of the sensing optical fiber 1; the monitoring device 3 is connected with the optical time domain reflector 2, receives the position information of the loss of the sensing optical fiber 1, and displays the position information of the guardrail plate 5 corresponding to the position information of the loss of the sensing optical fiber 1 on a highway map; and the portable alarm devices 4 are connected with the monitoring device 3, and receive the position information of the guardrail plate 5 corresponding to the position information of the loss of the sensing optical fiber 1.
The sensing optical fiber 1 is adhered, bound or magnetically attracted on a fixed point 6 of an existing guardrail plate 5 on the highway.
When the guardrail plate 5 is newly built, the sensing optical fiber 1 is installed at the reserved installation position of the newly built guardrail plate 5.
The optical time domain reflectometer 2 and the monitoring device 3 are arranged in a toll station or a relay station.
The optical time domain reflectometer 2 includes a low resolution sampling point working state and a high resolution sampling point working state.
When the optical time domain reflectometer 2 detects that the loss of the sensing optical fiber 1 is greater than a preset threshold value in the low-resolution sampling point working state, the high-resolution sampling point working state is started, and the position information of the optical fiber loss is obtained.
The optical time domain reflectometer 2 obtains attenuation information by using backscattered light generated when light propagates through the sensing fiber 1, and detects a loss of the sensing fiber 1.
And the low-resolution sampling point working state and the high-resolution sampling point working state are adjusted according to seasons and time.
The portable alarm device 4 is connected with the monitoring device 3 in a wireless communication mode and is in two-way communication.
The optical time domain reflectometer compares optical fiber information detected in the current time period with optical fiber information acquired in the previous time period, and obtains optical fiber loss information according to a comparison result, wherein the interval time between the current time period and the previous time period is a preset time period.
The collision alarm system of the expressway guardrail plate further comprises a monitoring center module 7, the monitoring center module 7 is connected with the monitoring equipment 3, and the monitoring center module 7 judges the damage level of the expressway guardrail plate according to the change degree of optical fiber loss.
The optical fiber is arranged into annular wiring according to the length, and a dual-wavelength filtering method or an optical switch is adopted to switch the output port.
The connection structure of the collision alarm system of the highway guardrail plate in the figure 1 is suitable for the monitoring equipment to be placed at a highway toll station or a service center. The connection structure of the collision alarm system of the highway guardrail plate in the figure 2 is suitable for placing monitoring equipment in a newly-built monitoring station in a highway section, a power supply module 8 of optional solar energy or wind energy and a communication module 9 are needed, and the optical time domain reflectometer 2 sends data to the monitoring equipment 3 through the communication module 9. According to the geographical position of the device, the power supply module 8 can select solar energy or wind energy, the communication module 9 can select a 5G or network cable mode, and the portable alarm device 4 can be a mobile phone and has the function of feeding back information to the monitoring device 3.
In fig. 3, the sensing fiber 1 is connected as a loop, the rear of the optical time domain reflectometer 2 is connected with an electrical control optical switch 10 which is divided into two paths, and the output light of the optical time domain reflectometer 2 can be selectively used to enter a port 11 of the loop 1 or a port 12 of the loop 2 according to the state of the electrical control optical switch 10. When the electric control optical switch 10 is in the working state 1 at ordinary times, the light of the optical time domain reflectometer 2 enters the port 11 of the loop 1, and the light monitors the whole optical fiber loop along the loop. When the optical time domain reflectometer 2 detects a breakpoint of the loop, the breakpoint is switched back and forth through the optical switch, and the whole process of temporary monitoring is achieved.
The working process of the collision alarm system of the highway guardrail plate is as follows: the optical time domain reflectometer 2 detects the attenuation signal of the light in the sensing optical fiber 1 in the low-resolution sampling point working state, when the signal attenuation is strengthened, the optical time domain reflectometer 2 detects the attenuation signal in the sensing optical fiber 1 again in the high-resolution sampling point working state to obtain the specific position information of the loss 1 of the sensing optical fiber, the optical time domain reflectometer 2 transmits the specific position information of the loss of the sensing optical fiber 1 to the monitoring equipment 3, the monitoring equipment 3 converts the position information of the loss of the sensing optical fiber 1 into the corresponding position information of the guardrail plate 5, namely the specific position information on the highway, and displays the specific position information on the highway, because the monitoring equipment 3 is placed in a toll station or a relay station, when the monitoring equipment 3 displays the specific position information on the highway, the monitoring equipment can give an alarm to remind the staff in the toll station of the fault of the guardrail plate 5 for checking and maintenance, and simultaneously, the monitoring equipment 3 sends the specific position information on the highway to the portable alarm equipment 4, after the staff who carries portable alarm device 4 received alarm information, look over alarm information, when the staff was close and conveniently look over apart from the specific position information on the highway, this staff sent the information that conveniently looks over to monitoring facilities 3 through portable alarm device 4, and monitoring facilities 3 shows after receiving the information, and the staff of toll station knows that there has been relevant staff to look over.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.
Claims (10)
1. A collision warning system of a highway guardrail plate, comprising:
the sensing optical fiber is arranged on a guardrail plate of the highway;
the optical time domain reflectometer is connected with the sensing optical fiber and is used for detecting the position information of the loss of the sensing optical fiber;
the monitoring equipment is connected with the optical time domain reflectometer, receives the position information of the loss of the sensing optical fiber and displays the position information of the guardrail plate corresponding to the position information of the loss of the sensing optical fiber on a highway map;
and the portable alarm devices are connected with the monitoring device and receive guardrail plate position information corresponding to the position information of the loss of the sensing optical fiber.
2. The collision warning system of a highway guardrail plate of claim 1 wherein the sensing optical fiber is adhered, bound or magnetically attracted to an existing guardrail plate on a highway.
3. The collision warning system for the expressway guardrail plate of claim 2, wherein when the guardrail plate is newly built, the sensing optical fiber is installed at a reserved installation position of the newly built guardrail plate.
4. The collision warning system of a highway guardrail plate of claim 1 wherein the optical time domain reflectometer, monitoring equipment are provided in a toll booth or a relay station.
5. The collision warning system of a highway guardrail plate of claim 1 wherein the optical time domain reflectometer includes a low resolution spot-taking operating state and a high resolution spot-taking operating state, the low resolution spot-taking operating state and the high resolution spot-taking operating state being adjusted according to season and time.
6. The collision warning system of the highway guardrail plate of claim 5, wherein when the optical time domain reflectometer detects that the loss of the sensing optical fiber is greater than a preset threshold value in a low-resolution sampling point working state, the high-resolution sampling point working state is started to obtain the position information of the optical fiber loss.
7. The collision warning system of a highway guardrail plate of claim 1, wherein the optical time domain reflectometer uses backscattered light generated when propagating in the sensing optical fiber to obtain attenuated information, and detects the loss of the sensing optical fiber.
8. The collision warning system of a highway guardrail panel of claim 1 wherein the portable warning device is connected with the monitoring device by wireless communication and communicates bi-directionally.
9. The collision warning system of the highway guardrail plate of claim 1, wherein the optical time domain reflectometer compares the optical fiber information detected at the current time period with the optical fiber information obtained at the previous time period, and obtains the optical fiber loss information according to the comparison result, and the interval time between the current time period and the previous time period is a preset time period.
10. The collision warning system of a highway guardrail plate of claim 1 wherein the optical fibers are arranged in a ring-shaped layout according to length, and the output ports are switched by using a dual-wavelength filtering method or an optical switch.
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| CN202010669823.9A CN112002104A (en) | 2020-07-13 | 2020-07-13 | Collision alarm system of highway guardrail board |
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| CN202010669823.9A CN112002104A (en) | 2020-07-13 | 2020-07-13 | Collision alarm system of highway guardrail board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112987120A (en) * | 2021-03-08 | 2021-06-18 | 山东高速高新材料科技有限公司 | Method for detecting guardrail collision |
| CN113756218A (en) * | 2021-08-31 | 2021-12-07 | 太原理工大学 | Optical fiber sensing early warning system for highway guardrail collision |
| CN113870578A (en) * | 2021-11-02 | 2021-12-31 | 陆航安防工程(上海)股份有限公司 | Road guardrail intelligent detection system and detection method thereof |
-
2020
- 2020-07-13 CN CN202010669823.9A patent/CN112002104A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112987120A (en) * | 2021-03-08 | 2021-06-18 | 山东高速高新材料科技有限公司 | Method for detecting guardrail collision |
| CN113756218A (en) * | 2021-08-31 | 2021-12-07 | 太原理工大学 | Optical fiber sensing early warning system for highway guardrail collision |
| CN113756218B (en) * | 2021-08-31 | 2022-07-12 | 太原理工大学 | Optical fiber sensing early warning system for highway guardrail collision |
| CN113870578A (en) * | 2021-11-02 | 2021-12-31 | 陆航安防工程(上海)股份有限公司 | Road guardrail intelligent detection system and detection method thereof |
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