CN112878242B - Highway guardrail collision remote intelligent monitoring system and monitoring method - Google Patents
Highway guardrail collision remote intelligent monitoring system and monitoring method Download PDFInfo
- Publication number
- CN112878242B CN112878242B CN202110263847.9A CN202110263847A CN112878242B CN 112878242 B CN112878242 B CN 112878242B CN 202110263847 A CN202110263847 A CN 202110263847A CN 112878242 B CN112878242 B CN 112878242B
- Authority
- CN
- China
- Prior art keywords
- module
- angle sensor
- data
- pulse
- grating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 9
- 210000000481 breast Anatomy 0.000 claims abstract description 73
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000004364 calculation method Methods 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 26
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 22
- 229910052744 lithium Inorganic materials 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000007665 sagging Methods 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003889 eye drop Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- G08B25/10—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 wireless transmission systems
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention relates to the field of highway traffic, in particular to a highway guardrail collision remote intelligent monitoring system and a monitoring method, which are arranged on each pair of adjacent upright posts (5) of a highway and a breast board (9) positioned between each pair of upright posts (5), wherein the system comprises a collision signal receiving and converting device, a collision transmission device, a terminal machine module (8), a cloud computing end, a central host machine and a power supply device; the system has the advantages of simple structure, low cost and high reliability; the invention adopts the grating type angle sensor, is indirectly converted according to the rotation angle of the grating through one stay wire, and has simple structure; the invention only adopts one grating sensor, and the length of the steel wire rope is adjusted according to the length of the guardrail, so that the cost is low; and the steel wire rope is installed in a mode of clamping at two ends, and the pretightening force of the steel wire rope can be adjusted through the torque of the fixing bolt, so that the precision and the anti-interference capability are improved.
Description
Technical Field
The invention relates to the field of highway traffic, in particular to a highway guardrail collision remote intelligent monitoring system and a monitoring method.
Background
With the development of the economy in China and the improvement of the living standard of people, the automobile conservation amount is increased, the traffic flow on the expressway is increased, the traffic accidents are increased, and the highway guardrails are damaged to different degrees. At present, the highway guardrails in China cannot automatically alarm after being damaged, have no remote monitoring function, only rely on accident alarm or inspection personnel to find, so that the situation can not be found and maintained at the first time, and the damaged highway guardrails can cause certain potential safety hazards to other vehicles passing by.
Disclosure of Invention
The invention aims to provide a highway guardrail collision remote intelligent monitoring system which not only can measure the severity of a vehicle collision guardrail, but also can immediately send the collision condition, time and position to a system platform, and can realize 24-hour unmanned monitoring and accident alarming.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a highway guardrail collision remote intelligent monitoring system which is arranged on each pair of adjacent upright posts 5 and a guardrail plate 9 positioned between each pair of upright posts 5 of a highway, wherein the system comprises a collision signal receiving and converting device, a collision transmission device, a terminal machine module 8, a cloud computing end, a central host machine and a power supply device;
the collision signal receiving and converting device comprises a grating type angle sensor 3, an encoder bracket 4 and a high-speed pulse acquisition module 7;
The encoder bracket 4 is arranged on one side of the breast board 9, which is close to the upright post 5 on one side and is away from the expressway, and comprises a vertical section fixedly connected with the breast board 9 and a horizontal section vertically arranged with the breast board 9; the grating angle sensor 3 adopts an incremental encoder, is fixedly connected to the horizontal section of the encoder bracket 4, and is used for converting the angular displacement of the rotating shaft on the grating angle sensor 3 into pulse number output; the high-speed pulse acquisition module 7 is connected with the grating angle sensor 3 through a signal line, and acquires pulse signals from the grating angle sensor 3 through two high-speed pulse acquisition channels to perform pulse counting; the high-speed pulse acquisition module 7 is connected with the terminal module 8 through a signal line, and pulse data information is sent to the terminal module 8;
The collision transmission device comprises a steel wire rope 1, a wheel disc 2, a double-hole aluminum sleeve, a spring piece 10 and a hanging ring movable joint screw 6;
The wheel disc 2 is arranged on the rotating shaft of the grating angle sensor 3 on the encoder bracket 4 adjacent to one side of the breast board 9 through a central hole thereof, and a screw 11 is arranged at the position of the other side of the breast board 9, which is positioned on the same horizontal line with the wheel disc 2; the eye movable joint screw 6 is connected with the nut, is fixed at the position of the breast board 9 between the wheel disc 2 and the screw 11, and is positioned on the same horizontal line with the wheel disc 2 and the screw 11; one end of the steel wire rope 1 is wound on the wheel disc 2 and is fixed through a double-hole aluminum sleeve, the middle section of the steel wire rope 1 passes through a hanging ring movable joint screw 6, and the other end of the steel wire rope 1 is fixed on a screw 11; the spring piece 10 is arranged on the wheel disc 2 through a screw, the horizontal section of the spring piece 10 is fixedly connected with the horizontal section of the encoder bracket 4, and the vertical section of the spring piece 10 is contacted with the wheel disc 2 through the screw for providing pretightening force to prevent the wheel disc 2 from autorotating;
the terminal machine module 8 is a communication module for data acquisition and remote monitoring and is used for receiving pulse signals from the high-speed pulse acquisition module 7, and a positioning module and a communication module are integrated in the terminal machine module, and the positioning module can communicate with a communication satellite to perform real-time positioning; the communication module can perform data transmission, and pulse data and position information are transmitted to the cloud computing end through a 4G or 5G network;
The central host, namely a computer special for a worker and capable of directly sending a control command and monitoring data, can log in a relevant platform on the central host and read data information obtained by calculation of the cloud computing terminal;
the cloud computing end comprises a pulse data receiving module, a data computing module, a real-time data monitoring module and an information alarming module;
The pulse data receiving module is connected with the terminal module 8 through wireless communication to perform data transmission, and receives pulse data information sent by the terminal module 8;
The data calculation module performs data operation according to the pulse data information received by the pulse data receiving module, and comprises calculation of rotation angle of a rotating shaft of the grating type angle sensor, elongation of a steel wire rope, collision force of a vehicle and deformation of a breast board;
The real-time data monitoring module comprises a real-time data table, a real-time data graph and real-time map position information, outputs the data calculated by the data calculation module into the data table and the graph, and can receive and display longitude and latitude position information and a positioning map of the terminal module 8;
The information alarm module is used for reminding workers of accidents on the highway guardrails, a threshold value is set for the rotation angle of the rotating shaft of the grating type angle sensor 3, when the rotation angle change exceeds the set threshold value, the system can give an alarm to the data information of the deformation of the guardrails and the longitude and latitude position information of the guardrails of appointed contact persons, and the deformation of the guardrail plates 9 and the change value of the automobile impact force in a short time are recorded;
The power supply device comprises a solar panel, a lithium battery and a solar battery controller and is used for supplying power to the whole intelligent guardrail collision monitoring system;
The solar panel is fixed on one side of the upright post 5; solar cell panels directly convert solar radiation energy into electric energy through photoelectric effect or photochemical effect by absorbing sunlight;
The solar cell controller is connected with the solar cell panel and the lithium battery;
The power supply ports of the lithium battery, the solar panel, the high-speed pulse acquisition module 7 and the terminal module 8 are connected to a solar battery controller by using a photovoltaic cable, so that the whole system is powered.
The high-speed pulse acquisition module 7 uses the RS-485 communication technology to send pulse data information to the terminal module 8.
The number of the eye-swing screws 6 is plural.
The high-speed pulse acquisition module 7, the terminal module 8, the solar cell controller and the lithium battery are placed in a closed protection box, and the box is positioned on one side of the breast board stand column, which is away from the expressway.
A monitoring method utilizing the highway guardrail collision remote intelligent monitoring system comprises the following steps:
1) The grating type angle sensor 3 is fixedly connected to the encoder bracket 4 through a screw, then the grating type angle sensor 3 and the encoder bracket 4 are installed on a breast board 9 at one side far away from a highway through a screw, the wheel disc 2 is installed on a rotating shaft of the grating type angle sensor 3 through a central hole, a hanging ring movable joint screw 6 is installed on the breast board 9 through a nut, then the steel wire rope 1 is wound on the wheel disc 2, one end of the steel wire rope is fixed on the wheel disc 2 through a double-hole aluminum sleeve, and the other end of the steel wire rope penetrates through the hanging ring movable joint screw 6 and is fixed on a screw 11 at the other side of the breast board 9; the wheel disc 2, the hanging ring movable joint screw 6 and the screw 11 are positioned on the same horizontal line; the position of the spring piece 10 is regulated, so that proper pretightening force is provided to prevent the wheel disc 2 from rotating; the high-speed pulse acquisition module 7, the terminal machine module 8, the solar cell controller and the lithium battery are arranged in a closed protection box close to the upright post 5, and the solar cell panel is placed on one side of the upright post 5 for fixing;
2) The grating type angle sensor 3 is connected to the high-speed pulse acquisition module 7, then a signal wire is used for connecting an RS-485 communication interface of the high-speed pulse acquisition module 7 and a data receiving interface of the terminal module 8, and finally a photovoltaic cable is used for connecting power supply ports of the lithium battery, the solar panel, the high-speed pulse acquisition module 7 and the terminal module 8 to a solar battery controller to supply power to the whole system;
3) When the guardrail is impacted by a vehicle, the guardrail plate 9 deforms, the steel wire rope 1 is stressed and deforms along with the guardrail plate, the wheel disc 2 is driven to rotate, so that the rotating shaft of the grating angle sensor 3 rotates, pulse signals are sent out, the high-speed pulse acquisition module 7 receives the pulse signals from the grating angle sensor 3 through two high-speed pulse acquisition channels and counts the pulse signals, then pulse information is sent to the terminal module 8 through RS-485 communication, and the terminal module 8 transmits pulse data and position information to the cloud computing end through a 4G or 5G network;
4) The cloud computing terminal firstly receives pulse data from the terminal module 8 through the pulse data receiving module to obtain pulse quantity;
5) The data calculation module performs data calculation to obtain data of rotation angle of a rotating shaft, elongation of a steel wire rope, collision force of a vehicle and deformation value of a breast board of the grating type angle sensor;
(1) Calculation of rotation angle of rotating shaft of grating type angle sensor
Wherein alpha is the rotation angle of a rotating shaft of the grating type angle sensor, and the unit is an angle; n is the pulse count of the grating angle sensor 3; m is the number of pulses generated by one turn of the rotating shaft of the grating angle sensor; n is the rotating speed of a rotating shaft of the grating angle sensor, and the unit is mm/s; t is the time used when the pulse count of the grating angle sensor is n, and the unit is seconds; d is the diameter of the rotating shaft, and the unit is mm;
(2) Calculation of rope elongation
Wherein L 1 is the elongation of the steel wire rope, and the unit is mm; d is the diameter of the rotating shaft, and the unit is mm; n is the pulse count of the grating angle sensor 3; m is the number of pulses generated by one turn of the rotating shaft of the grating angle sensor;
(3) Calculation of vehicle collision force and railing panel deformation value
The barrier plate has the functions of absorbing collision energy through deformation, forcing the uncontrolled vehicle to change direction and restore to the normal running direction, knowing the pull-out amount of the steel wire rope 1 according to the rotation angle measured by the grating angle sensor, and then reversely calculating the deformation amount of the barrier plate according to the elastic modulus of the barrier plate to calculate the impact force of the vehicle;
From equation 4
Wherein x is the distance between the collision position of the automobile and the axis of the left upright post, and the unit is mm; θ is the angle of change of the winding end steel wire rope 1, and the unit is degree; l is the length of the breast board 9 between the two upright posts 5, and the unit is mm; beta is the angle of the fixed end steel wire rope 1, and the unit is degree; n is the pulse count of the grating angle sensor 3; m is the number of pulses generated by one turn of the rotating shaft of the grating angle sensor; d is the diameter of the rotating shaft, and the unit is mm;
The value of theta and the value of beta can be obtained by the simultaneous equation 4;
according to formula 5, the breast board deformation value can be obtained:
deflection: y max =x·tan θ formula 5
Wherein Y max is the deflection of the breast board 9 when bending and deforming, and the unit is mm; x is the distance between the collision position of the automobile and the axis of the left upright post, and the unit is mm; θ is the angle of change of the winding end steel wire rope 1, and the unit is degree;
from equation 6, the vehicle impact force can be obtained:
From the material of the rail 9, the modulus of elasticity E can be known; from the cross-sectional form of the breast board 9, the moment of inertia I of the breast board 9 can be known;
thus, it is possible to obtain
Vehicle impact force:
Wherein P is the impact force of the vehicle, and the unit is N; e is the elastic modulus of the breast board 9, and the unit is MPa; i is the moment of inertia of the breast board, the unit is mm 4;Ymax is the deflection of the breast board 9 during bending deformation, and the unit is mm; l is the length of the breast board 9 between the two upright posts 5, and the unit is mm;
6) The real-time data monitoring module can make the calculated data of the rotation angle of the rotating shaft of the grating angle sensor, the elongation of the steel wire rope, the collision force of the vehicle and the deformation value of the breast board into a real-time data table and display a real-time graph on a monitoring platform of the central host computer, and the data updating time can be set in a self-defined manner, so that the real-time monitoring of staff is facilitated; meanwhile, longitude and latitude data information of the terminal module can be displayed on the monitoring platform, and the position of the terminal module can be displayed through a map;
7) The information alarm module can set the values of the rotation angle of the rotating shaft, the elongation of the steel wire rope, the collision force of the vehicle and the deformation value of the breast board of the grating type angle sensor, and when the variable values exceed a threshold value, the system sends an alarm short message to a designated contact person and starts recording the change data of the variable values so as to facilitate the analysis of historical data by staff.
Compared with the prior art, the invention has the beneficial effects that:
1. The structure is simple, the cost is low, and the reliability is high; the traditional method for measuring collision generally adopts a collision acceleration sensor to directly measure, but the invention adopts a grating angle sensor, and is indirectly converted according to the rotation angle of a grating through a stay wire, so that the structure is simple; in addition, a plurality of transmission collision sensors are required to be arranged for the high-speed guardrails, the distance is small, and the cost is high; and the steel wire rope is installed in a mode of clamping at two ends, and the pretightening force of the steel wire rope can be adjusted through the torque of the fixing bolt, so that the precision and the anti-interference capability are improved.
2. When the vehicle bumps the high-speed guardrail, the communication module can send the collision condition and the position to the monitoring platform at the first time, carries out accident alarm, and the convenience staff can arrive at the scene in time to check and maintain, ensures the traffic safety of the passing vehicle, and realizes remote real-time monitoring.
3. The maintenance is convenient. After collision, the steel wire rope is rewound. The steel wire rope is a non-disposable part and can be reused, so that the maintenance cost is reduced.
4. The intelligent judgment is performed, the impact force can be predicted according to the rotation angle, the information such as the vehicle speed is judged, and the basis is provided for the processing of traffic accidents.
5. The system can be widely installed in a plurality of areas, realizes networking of multiple installation points, and realizes simultaneous monitoring in a large range.
Drawings
FIG. 1 is a schematic diagram of the system operation of a highway guardrail crash remote intelligent monitoring system of the present invention;
FIG. 2 is a schematic diagram of the mechanical connection of a highway guardrail crash remote intelligent monitoring system of the present invention;
FIG. 3 is a schematic view of a wheel disc and collision signal receiving device of a highway guardrail collision remote intelligent monitoring system of the present invention mounted on a guardrail plate;
Fig. 4 is a diagram of a car crash diagram of a highway guardrail crash remote intelligent monitoring system of the present invention.
Reference numerals:
1. Wire rope
2. Wheel disc
3. Grating angle sensor
4. Encoder support
5. Upright post
6. Eye movable joint screw
7. High-speed pulse acquisition module
8. Terminal machine module
9. Breast board
10. Spring piece
11. Screw bolt
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
As shown in fig. 1 to 4, the highway guardrail collision remote intelligent monitoring system comprises a collision signal receiving and converting device, a collision transmission device, a terminal module 8, a cloud computing end, a central host and a power supply device.
A highway guardrail collision remote intelligent monitoring system is arranged on each pair of adjacent upright posts 5 and a guardrail plate 9 positioned between each pair of upright posts 5 of a highway.
The collision signal receiving and converting device comprises a grating type angle sensor 3, an encoder bracket 4 and a high-speed pulse acquisition module 7.
The encoder support 4 is arranged on the side of the breast board 9 adjacent to the side upright 5 facing away from the highway, and comprises a vertical section fixedly connected with the breast board 9 and a horizontal section vertically arranged with the breast board 9. The grating angle sensor 3 adopts an incremental encoder and is fixedly connected to the horizontal section of the encoder bracket 4, and is used for converting the angular displacement of the rotating shaft on the grating angle sensor 3 into pulse number output. The high-speed pulse acquisition module 7 is connected with the grating angle sensor 3 through a signal wire, and pulse signals from the grating angle sensor 3 are acquired through two high-speed pulse acquisition channels to perform pulse counting. The high-speed pulse acquisition module 7 is connected with the terminal module 8 through a signal line, and pulse data information is sent to the terminal module 8. Preferably, the high-speed pulse acquisition module 7 transmits pulse data information to the terminal module 8 using RS-485 communication technology.
The collision transmission device comprises a steel wire rope 1, a wheel disc 2, a double-hole aluminum sleeve, a spring piece 10 and a hanging ring movable joint screw 6.
The wheel disc 2 is mounted through its central hole on the rotation axis of the grating angle sensor 3 on the encoder support 4 adjacent to one side of the breast board 9, and a screw 11 is provided at a position on the other side of the breast board 9 on the same horizontal line as the wheel disc 2. The eye articulation screw 6 is fixed in the position of the breast board 9 between the wheel disc 2 and the screw 11 by being connected with the nut, and is positioned on the same horizontal line with the wheel disc 2 and the screw 11. One end of the steel wire rope 1 is wound on the wheel disc 2 and is fixed through a double-hole aluminum sleeve, the middle section of the steel wire rope 1 passes through the hanging ring movable joint screw 6, and the other end of the steel wire rope 1 is fixed on the screw 11. Because the wire rope 1 is thin and has small weight, in order to prevent excessive swing of the wire rope 1 in windy weather, the wire rope passes through the fixed hanging ring movable joint screw 6 to play a role in preventing swing and sagging, so as to prevent sagging of the wire rope 1. The number of the eye-joint screws 6 is determined according to the actual installation condition of the breast board 9, and if the sagging of the steel wire rope is serious, a plurality of eye-joint screws 6 are installed. The spring piece 10 is installed on the rim plate 2 through the screw, and the horizontal segment of spring piece 10 links firmly with the horizontal segment of encoder support 4, through the fix with screw, the vertical section of spring piece 10 and rim plate 2 contact for provide pretightning force, prevent rim plate 2 rotation. The steel wire rope 1 can bear various loads and the action of variable loads, and has higher tensile strength, fatigue resistance and impact toughness. When a vehicle collides with the breast board 9, the breast board 9 deforms, the steel wire rope 1 is stressed and deformed, and the wheel disc 2 is driven to rotate, so that the rotating shaft of the grating angle sensor 3 rotates.
The grating angle sensor 3 converts the angle value rotated by the rotating shaft into pulse number to be output, the high-speed pulse acquisition module 7 receives pulse information from the grating angle sensor 3 through two high-speed pulse acquisition channels to count, and the pulse number is sent to the terminal module 8 through RS-485 communication.
The terminal module 8 is a communication module for data acquisition and remote monitoring, and is used for receiving pulse signals from the high-speed pulse acquisition module 7, and is internally integrated with a positioning module and a communication module, wherein the positioning module can communicate with a communication satellite for real-time positioning. The communication module can perform data transmission, and pulse data and position information are transmitted to the cloud computing end through a 4G or 5G network.
The central host, namely a computer special for a worker and capable of directly sending a control command and monitoring data, can log in a relevant platform on the central host and read data information obtained by calculation of the cloud computing terminal.
The cloud computing end comprises a pulse data receiving module, a data computing module, a real-time data monitoring module and an information alarming module.
The pulse data receiving module is connected with the terminal module 8 through wireless communication to perform data transmission, and receives pulse data information sent by the terminal module 8.
The data calculation module performs data operation according to the pulse data information received by the pulse data receiving module, and comprises calculation of rotation angle of a rotating shaft of the grating type angle sensor, elongation of a steel wire rope, collision force of a vehicle and deformation of a breast board.
The real-time data monitoring module comprises a real-time data table, a real-time data graph and real-time map position information, outputs the data calculated by the data calculation module into the data table and the graph, and can receive and display longitude and latitude position information and a positioning map of the terminal module 8.
The information alarm module is used for reminding workers of accidents on highway guardrails, a threshold value is set for rotation angles of rotating shafts of the grating type angle sensors 3, when rotation angle changes exceed the set threshold value, the system can give an alarm to data information of deformation of the guardrails and longitude and latitude position information of the guardrails of appointed contact persons, and change values of deformation of the guardrail plates 9 and automobile impact force in a short time can be recorded, so that later-stage accident analysis is facilitated.
The power supply device comprises a solar cell panel, a lithium battery and a solar cell controller and is used for supplying power to the whole intelligent guardrail collision monitoring system.
The solar panel is fixed on one side of the upright 5. Solar panels directly convert solar radiation energy into electrical energy by absorption of sunlight, either through the photoelectric effect or the photochemical effect.
The lithium battery supplies power to the whole system.
The solar cell controller is connected with the solar cell panel and the lithium battery and is used for performing anti-backflushing protection, short-circuit protection and overcharge and overdischarge protection, so that the overcharge and overdischarge of the lithium battery are prevented, the service life of the lithium battery can be prolonged, and meanwhile, the voltage and the electric quantity of the lithium battery are displayed.
The power supply ports of the lithium battery, the solar panel, the high-speed pulse acquisition module 7 and the terminal module 8 are connected to a solar battery controller by using a photovoltaic cable, so that the whole system is powered.
In order to avoid the influence of bad weather, the high-speed pulse acquisition module 7 and the terminal module 8, the solar cell controller and the lithium battery are placed in a closed and protected box, and the box is positioned on one side of the breast board upright post, which is away from the expressway.
The monitoring method of the highway guardrail collision remote intelligent monitoring system comprises the following steps:
1. The grating type angle sensor 3 is fixedly connected to the encoder bracket 4 through a screw, then the grating type angle sensor 3 and the encoder bracket 4 are installed on a breast board 9 on one side deviating from a highway through screws, the wheel disc 2 is installed on a rotating shaft of the grating type angle sensor 3 through a central hole, a hanging ring movable joint screw 6 is installed on the breast board 9 through a nut, then the steel wire rope 1 is wound on the wheel disc 2, one end of the steel wire rope is fixed on the wheel disc 2 through a double-hole aluminum sleeve, and the other end of the steel wire rope passes through the hanging ring movable joint screw 6 and is fixed on a screw 11 on the other side of the breast board 9. The wheel disc 2, the eye-drop screw 6 and the screw 11 are positioned on the same horizontal line. The position of the spring piece 10 is adjusted to provide proper pretightening force to prevent the wheel disc 2 from rotating. The high-speed pulse acquisition module 7, the terminal module 8, the solar cell controller and the lithium battery are arranged in a closed protection box close to the upright post 5, and the solar cell panel is placed on one side of the upright post 5 for fixation.
2. The grating type angle sensor 3 is connected to the high-speed pulse acquisition module 7, then a signal wire is used for connecting an RS-485 communication interface of the high-speed pulse acquisition module 7 and a data receiving interface of the terminal module 8, and finally a photovoltaic cable is used for connecting power supply ports of the lithium battery, the solar panel, the high-speed pulse acquisition module 7 and the terminal module 8 to a solar battery controller, so that the whole system is powered.
3. When the guardrail is impacted by a vehicle, the guardrail plate 9 deforms, the steel wire rope 1 is stressed and deforms along with the guardrail plate, the wheel disc 2 is driven to rotate, so that the rotating shaft of the grating angle sensor 3 rotates, pulse signals are sent out, the high-speed pulse acquisition module 7 receives the pulse signals from the grating angle sensor 3 through two high-speed pulse acquisition channels and counts the pulse signals, then pulse information is sent to the terminal module 8 through RS-485 communication, and the terminal module 8 transmits pulse data and position information to the cloud computing end through a 4G or 5G network.
4. The cloud computing end firstly receives pulse data from the terminal module 8 through the pulse data receiving module to obtain pulse quantity.
5. The data calculation module performs data calculation to obtain data of rotation angle of the rotating shaft, elongation of the steel wire rope, collision force of the vehicle and deformation value of the breast board of the grating type angle sensor.
(1) Calculation of rotation angle of rotating shaft of grating type angle sensor
Wherein alpha is the rotation angle of a rotating shaft of the grating type angle sensor, and the unit is an angle; n is the pulse count of the grating angle sensor 3; m is the number of pulses generated by one turn of the rotating shaft of the grating angle sensor; n is the rotating speed of a rotating shaft of the grating angle sensor, and the unit is mm/s; t is the time used when the pulse count of the grating angle sensor is n, and the unit is seconds; d is the diameter of the rotating shaft, and the unit is mm.
(2) Calculation of rope elongation
Wherein L 1 is the elongation of the steel wire rope, and the unit is mm; d is the diameter of the rotating shaft, and the unit is mm; n is the pulse count of the grating angle sensor 3; m is the number of pulses generated by one revolution of the rotating shaft of the grating type angle sensor.
(3) Calculation of vehicle collision force and railing panel deformation value
The effect of breast board is through deformation absorption collision energy, forces out of control vehicle change direction, resumes in the normal direction of traveling, can learn wire rope 1's pull-out volume according to grating angle sensor measurement's rotation angle, then calculate the deformation volume of breast board according to breast board elastic modulus counter, calculate the size of vehicle impact.
From equation 4
Wherein x is the distance between the collision position of the automobile and the axis of the left upright post, and the unit is mm; θ is the angle of change of the winding end steel wire rope 1, and the unit is degree; l is the length of the breast board 9 between the two upright posts 5, and the unit is mm; beta is the angle of the fixed end steel wire rope 1, and the unit is degree; n is the pulse count of the grating angle sensor 3; m is the number of pulses generated by one turn of the rotating shaft of the grating angle sensor; d is the diameter of the rotating shaft, and the unit is mm.
The value of θ and the value of β are obtained by simultaneous expression 4.
According to formula 5, the breast board deformation value can be obtained:
deflection: y max =x·tan θ formula 5
Wherein Y max is the deflection of the breast board 9 when bending and deforming, and the unit is mm; x is the distance between the collision position of the automobile and the axis of the left upright post, and the unit is mm; θ is the angle of change of the winding end wire rope 1, and is in units of °.
From equation 6, the vehicle impact force can be obtained:
From the material of the rail 9, the modulus of elasticity E can be known; from the cross-sectional form of the breast board 9, the moment of inertia I of the breast board 9 can be known.
Thus, it is possible to obtain
Vehicle impact force:
wherein P is the impact force of the vehicle, and the unit is N; e is the elastic modulus of the breast board 9, and the unit is MPa; i is the moment of inertia of the breast board, the unit is mm 4;Ymax is the deflection of the breast board 9 during bending deformation, and the unit is mm; l is the length of the breast board 9 between the two posts 5, and the unit is mm.
6. The real-time data monitoring module can manufacture the calculated data of the rotation angle of the rotating shaft of the grating angle sensor, the elongation of the steel wire rope, the collision force of the vehicle and the deformation value of the breast board into a real-time data table and display a real-time graph on a monitoring platform of the central host computer, and the data updating time can be set in a self-defined mode, so that the real-time monitoring of staff is facilitated. Meanwhile, longitude and latitude data information of the terminal module can be displayed on the monitoring platform, and the position of the terminal module can be displayed through a map.
7. The information alarm module can set the values of the rotation angle of the rotating shaft, the elongation of the steel wire rope, the collision force of the vehicle and the deformation value of the breast board of the grating type angle sensor, and when the variable values exceed a threshold value, the system sends an alarm short message to a designated contact person and starts recording the change data of the variable values so as to facilitate the analysis of historical data by staff.
Claims (1)
1. A monitoring method of a remote intelligent monitoring system utilizing highway guardrail collision is characterized in that,
The highway guardrail collision remote intelligent monitoring system is arranged on each pair of adjacent upright posts (5) of a highway and a breast board (9) positioned between each pair of adjacent upright posts (5), and comprises a collision signal receiving and converting device, a collision transmission device, a terminal machine module (8), a cloud computing end, a central host machine and a power supply device;
The collision signal receiving and converting device comprises a grating type angle sensor (3), an encoder bracket (4) and a high-speed pulse acquisition module (7);
The encoder bracket (4) is arranged on one side, away from the expressway, of the breast board (9) adjacent to the side upright post (5) and comprises a vertical section fixedly connected with the breast board (9) and a horizontal section vertically arranged with the breast board (9); the grating angle sensor (3) adopts an incremental encoder, is fixedly connected to the horizontal section of the encoder bracket (4) and is used for converting the angular displacement of a rotating shaft on the grating angle sensor (3) into pulse number output; the high-speed pulse acquisition module (7) is connected with the grating angle sensor (3) through a signal line, and pulse signals from the grating angle sensor (3) are acquired through two high-speed pulse acquisition channels to perform pulse counting; the high-speed pulse acquisition module (7) is connected with the terminal module (8) through a signal line, and pulse data information is sent to the terminal module (8);
the collision transmission device comprises a steel wire rope (1), a wheel disc (2), a double-hole aluminum sleeve, a spring piece (10) and a hanging ring movable joint screw (6);
The wheel disc (2) is arranged on the rotating shaft of the grating type angle sensor (3) on the encoder bracket (4) adjacent to one side of the breast board (9) through the center hole, and a screw (11) is arranged at the position, which is positioned on the same horizontal line with the wheel disc (2), of the other side of the breast board (9); the eye movable joint screw (6) is connected with the nut, is fixed at the position of the baffle plate (9) between the wheel disc (2) and the screw (11), and is positioned on the same horizontal line with the wheel disc (2) and the screw (11); one end of the steel wire rope (1) is wound on the wheel disc (2) and is fixed through a double-hole aluminum sleeve, the middle section of the steel wire rope (1) passes through a lifting ring movable joint screw (6), and the other end of the steel wire rope (1) is fixed on a screw (11); the spring piece (10) is arranged on the wheel disc (2) through a screw, the horizontal section of the spring piece (10) is fixedly connected with the horizontal section of the encoder bracket (4), and the vertical section of the spring piece (10) is contacted with the wheel disc (2) through the screw for providing pretightening force and preventing the wheel disc (2) from rotating;
The terminal machine module (8) is a communication module for data acquisition and remote monitoring and is used for receiving pulse signals from the high-speed pulse acquisition module (7), a positioning module and a communication module are integrated in the terminal machine module, and the positioning module can communicate with a communication satellite to perform real-time positioning; the communication module can perform data transmission, and pulse data and position information are transmitted to the cloud computing end through a 4G or 5G network;
The central host, namely a computer special for a worker and capable of directly sending a control command and monitoring data, can log in a relevant platform on the central host and read data information obtained by calculation of the cloud computing terminal;
the cloud computing end comprises a pulse data receiving module, a data computing module, a real-time data monitoring module and an information alarming module;
The pulse data receiving module is connected with the terminal module (8) through wireless communication to perform data transmission, and receives pulse data information sent by the terminal module (8);
The data calculation module performs data operation according to the pulse data information received by the pulse data receiving module, and comprises calculation of rotation angle of a rotating shaft of the grating type angle sensor, elongation of a steel wire rope, collision force of a vehicle and deformation of a breast board;
The real-time data monitoring module comprises a real-time data table, a real-time data graph and real-time map position information, data obtained by calculation of the data calculation module are output into the data table and the graph, and longitude and latitude position information and a positioning map of the terminal module (8) can be received and displayed;
the information alarm module is used for reminding workers of accidents on highway guardrails, a threshold value is set for the rotation angle of a rotating shaft of the grating angle sensor (3), when the rotation angle change exceeds the set threshold value, the system can give an alarm to data information of the deformation of the guardrails and longitude and latitude position information of the guardrails of appointed contact persons, and the deformation of the guardrail plates (9) and the change value of the automobile impact force in a short time are recorded;
The power supply device comprises a solar panel, a lithium battery and a solar battery controller and is used for supplying power to the whole intelligent guardrail collision monitoring system;
The solar panel is fixed on one side of the upright post (5); solar cell panels directly convert solar radiation energy into electric energy through photoelectric effect or photochemical effect by absorbing sunlight;
The solar cell controller is connected with the solar cell panel and the lithium battery;
the power supply ports of the lithium battery, the solar panel, the high-speed pulse acquisition module (7) and the terminal module (8) are connected to the solar battery controller by using a photovoltaic cable, so that the whole system is powered;
the high-speed pulse acquisition module (7) uses an RS-485 communication technology to send pulse data information to the terminal module (8);
The number of the hanging ring movable joint screws (6) is plural;
the high-speed pulse acquisition module (7) and the terminal machine module (8), the solar battery controller and the lithium battery are placed in a closed protection box, and the box is positioned on one side of the baffle upright post, which is far away from the expressway;
the method comprises the following steps:
1) fixedly connecting a grating type angle sensor (3) on an encoder bracket (4) through a screw, then installing the grating type angle sensor (3) and the encoder bracket (4) on a baffle plate (9) at one side far away from a highway through the screw, installing a wheel disc (2) on a rotating shaft of the grating type angle sensor (3) through a central hole, installing a lifting ring movable joint screw (6) on the baffle plate (9) through a nut, then winding a steel wire rope (1) on the wheel disc (2), fixing one end of the steel wire rope on the wheel disc (2) through a double-hole aluminum sleeve, and fixing the other end of the steel wire rope on a screw (11) at the other side of the baffle plate (9) through the lifting ring movable joint screw (6); the wheel disc (2), the hanging ring movable joint screw (6) and the screw (11) are positioned on the same horizontal line; the position of the spring piece (10) is regulated, proper pretightening force is provided, and the wheel disc (2) is prevented from rotating; the high-speed pulse acquisition module (7), the terminal machine module (8), the solar cell controller and the lithium battery are arranged in a closed protection box close to the upright post (5), and the solar cell panel is placed on one side of the upright post (5) for fixing;
2) Connecting a grating type angle sensor (3) to a high-speed pulse acquisition module (7), connecting an RS-485 communication interface of the high-speed pulse acquisition module (7) and a data receiving interface of a terminal module (8) by using a signal wire, and finally connecting power supply ports of a lithium battery, a solar panel, the high-speed pulse acquisition module (7) and the terminal module (8) to a solar battery controller by using a photovoltaic cable to supply power to the whole system;
3) When the guardrail is impacted by a vehicle, the guardrail plate (9) deforms, the steel wire rope (1) is stressed and deforms along with the guardrail plate to drive the wheel disc (2) to rotate, so that a rotating shaft of the grating angle sensor (3) rotates, pulse signals are sent out, the high-speed pulse acquisition module (7) receives the pulse signals from the grating angle sensor (3) through two high-speed pulse acquisition channels and counts the pulse signals, then pulse information is sent to the terminal module (8) through RS-485 communication, and the terminal module (8) transmits pulse data and position information to a cloud computing end through a 4G or 5G network;
4) The cloud computing terminal firstly receives pulse data from the terminal module (8) through the pulse data receiving module to obtain pulse quantity;
5) The data calculation module performs data calculation to obtain data of rotation angle of a rotating shaft, elongation of a steel wire rope, collision force of a vehicle and deformation value of a breast board of the grating type angle sensor;
(1) Calculation of rotation angle of rotating shaft of grating type angle sensor
，
Wherein alpha is the rotation angle of a rotating shaft of the grating type angle sensor, and the unit is an angle; n is pulse count of the grating angle sensor (3); m is the number of pulses generated by one turn of the rotating shaft of the grating angle sensor; n is the rotating speed of a rotating shaft of the grating angle sensor, and the unit is mm/s; t is the time used when the pulse count of the grating angle sensor is n, and the unit is seconds; d is the diameter of the rotating shaft, and the unit is mm;
(2) Calculation of rope elongation
，
Wherein, the elongation of the steel wire rope is in mm; d is the diameter of the rotating shaft, and the unit is mm; n is pulse count of the grating angle sensor (3); m is the number of pulses generated by one turn of the rotating shaft of the grating angle sensor;
(3) Calculation of vehicle collision force and railing panel deformation value
The barrier plate has the functions of absorbing collision energy through deformation, forcing the uncontrolled vehicle to change direction and restore to the normal running direction, knowing the pull-out amount of the steel wire rope (1) according to the rotation angle measured by the grating angle sensor, and then reversely calculating the deformation amount of the barrier plate according to the elastic modulus of the barrier plate to calculate the impact force of the vehicle;
From equation 4
，
Wherein x is the distance between the collision position of the automobile and the axis of the left upright post, and the unit is mm; θ is the angle of change of the winding end steel wire rope (1) and the unit is degree; l is the length of a breast board (9) between two upright posts (5), and the unit is mm; beta is the angle of change of the fixed end steel wire rope (1), and the unit is degree; n is pulse count of the grating angle sensor (3); m is the number of pulses generated by one turn of the rotating shaft of the grating angle sensor; d is the diameter of the rotating shaft, and the unit is mm;
The value of theta and the value of beta can be obtained by the simultaneous equation 4;
according to formula 5, the breast board deformation value can be obtained:
，
Wherein Y max is the deflection of the breast board (9) during bending deformation, and the unit is mm; x is the distance between the collision position of the automobile and the axis of the left upright post, and the unit is mm; θ is the angle of change of the winding end steel wire rope (1) and the unit is degree;
from equation 6, the vehicle impact force can be obtained:
From the material of the rail (9), the modulus of elasticity E can be known; according to the section form of the breast board (9), the moment of inertia I of the breast board (9) can be known;
thus, it is possible to obtain
，
Wherein P is the impact force of the vehicle, and the unit is N; e is the elastic modulus of the breast board (9), and the unit is MPa; i is the moment of inertia of the breast board, the unit is mm （4）;Ymax is the deflection of the breast board (9) during bending deformation, and the unit is mm; l is the length of a breast board (9) between two upright posts (5), and the unit is mm;
6) The real-time data monitoring module can make the calculated data of the rotation angle of the rotating shaft of the grating angle sensor, the elongation of the steel wire rope, the collision force of the vehicle and the deformation value of the breast board into a real-time data table and display a real-time graph on a monitoring platform of the central host computer, and the data updating time can be set in a self-defined manner, so that the real-time monitoring of staff is facilitated; meanwhile, longitude and latitude data information of the terminal module can be displayed on the monitoring platform, and the position of the terminal module can be displayed through a map;
7) The information alarm module can set the values of the rotation angle of the rotating shaft, the elongation of the steel wire rope, the collision force of the vehicle and the deformation value of the breast board of the grating type angle sensor, and when the variable values exceed a threshold value, the system sends an alarm short message to a designated contact person and starts recording the change data of the variable values so as to facilitate the analysis of historical data by staff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110263847.9A CN112878242B (en) | 2021-03-11 | 2021-03-11 | Highway guardrail collision remote intelligent monitoring system and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110263847.9A CN112878242B (en) | 2021-03-11 | 2021-03-11 | Highway guardrail collision remote intelligent monitoring system and monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112878242A CN112878242A (en) | 2021-06-01 |
| CN112878242B true CN112878242B (en) | 2024-07-12 |
Family
ID=76054249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110263847.9A Active CN112878242B (en) | 2021-03-11 | 2021-03-11 | Highway guardrail collision remote intelligent monitoring system and monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112878242B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214656636U (en) * | 2021-03-11 | 2021-11-09 | 中国农业大学 | Remote intelligent monitoring system for highway guardrail collision |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208161B (en) * | 2013-03-19 | 2016-02-03 | 石家庄供电公司 | Active detection type fiber grating cable tunnel safety defense monitoring system |
| CN113888889A (en) * | 2017-07-18 | 2022-01-04 | 青岛厚科信息工程有限公司 | Early warning system for preventing chain collision on highway |
| CN108951478A (en) * | 2018-05-28 | 2018-12-07 | 安徽铭心金属制品有限公司 | A kind of elastic rotary body, rotation guardrail and accident TT&C system |
-
2021
- 2021-03-11 CN CN202110263847.9A patent/CN112878242B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214656636U (en) * | 2021-03-11 | 2021-11-09 | 中国农业大学 | Remote intelligent monitoring system for highway guardrail collision |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112878242A (en) | 2021-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214656636U (en) | Remote intelligent monitoring system for highway guardrail collision | |
| CN106567347A (en) | Highway intelligent lifting height-limit frame and highway intelligent lifting height-limit control method | |
| CN205893966U (en) | Way brake gear of reliable anticollision | |
| CN105096394A (en) | Parking lot charging device | |
| CN112878242B (en) | Highway guardrail collision remote intelligent monitoring system and monitoring method | |
| CN209070723U (en) | A kind of freeway traffic information management platform | |
| CN205527452U (en) | Tower set -top that monitor function is taken one's place to strap bolt rises protection system | |
| CN203552466U (en) | Expressway long-span bridge deck wind speed early warning device | |
| CN213276966U (en) | Early warning monitoring device is used in road traffic engineering construction | |
| CN101221092B (en) | Rail measuring vehicle of bridge-type crane | |
| CN111206764A (en) | Intelligent safety hanging basket | |
| CN205186144U (en) | Railway station platform safety coefficient | |
| CN209673087U (en) | A kind of bridge construction support system sedimentation deformation monitoring device | |
| CN116817138A (en) | Road flow monitoring and situation early warning device | |
| CN110467117A (en) | A kind of tower crane with monitoring system | |
| CN201000320Y (en) | Ore bridge railway measuring vehicle | |
| CN211519891U (en) | Rotor wing test tower | |
| CN215728225U (en) | Wisdom building site management system | |
| CN109611206A (en) | A kind of Portable automobile engine wireless detection device | |
| CN207862765U (en) | A kind of bridge machinery vehicle working bench load transfinites protective device | |
| CN219349604U (en) | Highway guardrail collision detection alarm device | |
| CN213114397U (en) | Town road limit for height frame | |
| CN212154103U (en) | Intelligent safety hanging basket | |
| CN205654129U (en) | Vehicle transfinite intellectual detection system and reposition of redundant personnel charge station's structure of traveling | |
| CN221199223U (en) | Traffic guardrail anticollision detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |