CN103295401A - A Pavement Meteorological Condition Monitoring System - Google Patents
A Pavement Meteorological Condition Monitoring System Download PDFInfo
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Abstract
The invention discloses a road surface meteorological state monitoring system, which comprises a meteorological monitoring point device and a control terminal; the meteorological monitoring point device comprises an overground meteorological monitoring unit, a ground surface state monitoring unit, a lightning protection device, a data acquisition circuit, a CAN bus transceiving driver, a microprocessor, an RS232 communication interface circuit and a GSM/GPRS remote communication module; the control terminal consists of a GSM/GPRS remote communication module, a monitoring display module and a PC workstation, wherein the GSM/GPRS remote communication module is connected with the PC workstation through an RS232 communication interface, and the monitoring display module is connected with the PC workstation through a DVI digital video interface; and the GSM/GPRS remote communication module of the meteorological monitoring point device and the GSM/GPRS remote communication module of the control terminal realize wireless network data transmission.
Description
Technical field
The present invention relates to automatic detection range technology, refer in particular to a kind of road surface meteorology monitoring system.
Background technology
Along with the fast development of highway and sharply increasing of car owning amount, the driving accident of highway is frequent further, and especially frost mist, sleety weather cause knocks into the back and even a chain of accident that knocks into the back is appeared in the newspapers repeatly.For this reason, set up the weather monitoring device at highway, the weather information in real-time release monitoring highway section, and by the comprehensive monitoring highway section traffic safety parameter that generates of weather information, comprise road, safe distance between vehicles and speed of a motor vehicle threshold information, to preventing vehicle rear-end collision, guaranteeing that traffic safety has significance.
The application for a patent for invention that application number is 200910060562.4, the applying date is 2009-01-16 discloses " highway rear-end collision prevention early warning system ".This system is made up of N monitoring point (subnet) and the control terminal of express highway all-way two-way lane; Each subnet is made up of a plurality of ultrasonic probe, RS-485 multi-computer communication interface circuit and acousto-optic warning boards etc. that are embedded with microprocessor.Control terminal is laid in porch at highway, and control terminal is made up of GSM/GPRS remote communication module, PC workstation and monitoring display module.This application for a patent for invention provides the platform of a practicality to highway prevention vehicle rear-end collision, but also has the problem of some anxious To be improveds:
1, cause the meteorologic factor of rear-end collision to be not only the visibility reason that frost mist brings, sleety weather especially road snowberg, the icing coefficient of road adhesion that makes reduces, and wheel skids easily and breaks away, and also is the important meteorologic factor that causes rear-end collision.
2, on technological layer, the ice and snow sensor that Shang Wuke is useful for highway appears on the market, and the monitoring of ice and snow is still rested on the basis of manual observation.
3, the landform in each highway section of highway, physical features, road structure and thick fog, ice and snow occurrence degree are not quite similar, if can multiple spot is laid the related cost of equipment of weather monitoring device be the bottleneck problem that implement, be a gordian technique of this invention so reduce the weather monitoring installation cost.
Summary of the invention
In view of this, the present invention is directed to the disappearance of prior art existence, its fundamental purpose provides a kind of road surface meteorology monitoring system, this system can monitor highway relevant road segments environment weather parameter in real time, this system is fit to the highway application scenario of environmental baseline complexity, reliable operation, cost performance height and long service life.
For achieving the above object, the present invention adopts following technical scheme:
A kind of road surface meteorology monitoring system wraps in the weather monitoring point apparatus of laying in each highway section of highway and zone and the control terminal of laying at the place, expressway access;
This weather monitoring point apparatus comprises weather monitoring unit, face of land Condition Monitoring Unit, lightning protection device, data acquisition circuit, CAN bus, CAN bus transceiving driver, microprocessor, RS232 communication interface circuit and GSM/GPRS remote communication module on the ground.
This weather monitoring unit, ground is connected on the CAN bus by data acquisition circuit after connecting lightning protection device, and face of land Condition Monitoring Unit also is connected on the CAN bus by data acquisition circuit; This microprocessor is connected on the CAN bus by CAN bus transceiving driver, microprocessor also is connected in the GSM/GPRS remote communication module by the RS232 communication interface circuit, the weather monitoring unit is connected on the CAN bus by data acquisition circuit after connecting lightning protection device on the ground, and face of land Condition Monitoring Unit also is connected on the CAN bus by data acquisition circuit;
Described control terminal is made up of GSM/GPRS remote communication module, monitoring display module and PC workstation, this GSM/GPRS remote communication module is connected with the PC workstation by the RS232 communication interface, and monitoring display module is connected with the PC workstation by the DVI digital visual interface;
The GSM/GPRS remote communication module of described weather monitoring point apparatus and the GSM/GPRS remote communication module of control terminal realize the wireless network data transmission.
Preferably; weather monitoring unit, described ground comprises baroceptor, atmosphere temperature transducer, atmospheric humidity sensor, wind transducer, air velocity transducer, visibility sensor, radiation sensor, sunshine recorder, precipitation sensor, ice and snow sensor, and each sensor of this weather monitoring unit, ground all connects lightning protection device.
Preferably, described ground weather monitoring point apparatus is arranged on the other mobile jib column of road, the middle part of this mobile jib column is provided with a cabinet, is provided with above-mentioned microprocessor data Acquisition Circuit, CAN bus transceiving driver, microprocessor, RS232 communication interface circuit and GSM/GPRS remote communication module in the cabinet; The top of mobile jib column is provided with a sensor combinations support, the sensor combinations support is provided with above-mentioned baroceptor, atmosphere temperature transducer, atmospheric humidity sensor, wind transducer, air velocity transducer, visibility sensor, radiation sensor, sunshine recorder, precipitation sensor, ice and snow sensor, and each sensor links to each other with microprocessor in the cabinet by the CAN bus.
Preferably, the lightning rod at the top of described lightning protection device by being arranged on the mobile jib column is realized.
Preferably, the wireless antenna at the top of the telecommunication of described GSM/GPRS remote communication module by being arranged on the mobile jib column is realized.
Preferably, described face of land Condition Monitoring Unit is embedded on the road surface in advance, this face of land Condition Monitoring Unit comprise the surface temperature sensor and for detection of the face of land be in the ponding state, the accumulated snow state still is the surface pond/accumulated snow/dry sensor of drying regime.
Preferably, described surface temperature sensor is made up of preceding latter linked energy gap reference power supply, bleeder circuit, pre-amplification circuit and second level amplifying circuit, be provided with temperature sensor in this pre-amplification circuit, fit fully in this temperature sensor and the face of land, surface temperature changes after the surface temperature sensor is converted to analog electrical signal, converts digital signal to by data acquisition circuit and offers microprocessor and carry out identification computing and linear the correction.
Preferably, described surface pond/accumulated snow/dry sensor comprises the outer bucket of the sensor of imbedding the road surface, the top open part of bucket is provided with the transparent cover plate that flushes with the road surface outside sensor, is disposed with LASER Light Source, optical frames group, prism wedge and imageing sensor in the bucket outside sensor; LASER Light Source goes out the two-way laser beam by described optical frames component, and this two-way laser beam is incident to the transparent cover plate lower surface with different incident angles respectively, all some reflections of this two-way laser beam, another part arrives the transparent cover plate upper surface through refraction; If the two-way laser beam is respectively through the incident angle that refraction arrives the transparent cover plate upper surface
,
, this incident angle
Less than the cirtical angle of total reflection at water-transparent cover plate interface, greater than the cirtical angle of total reflection at ice-transparent cover plate interface, this incident angle
The cirtical angle of total reflection less than ice-transparent cover plate interface; Tiltedly towards the transparent cover plate lower surface, receiving from the downward folded light beam in each interface of prism wedge, imageing sensor are positioned at the prism wedge below in order to receive laser beam, and the output terminal of imageing sensor also is connected with data processing module.
Preferably, described optical frames group is by first catoptron, semi-transparent semi-reflecting lens, second catoptron, the 3rd catoptron, LASER Light Source is told transmitted light path and reflected light path by semi-transparent semi-reflecting lens, wherein set gradually described first catoptron, second catoptron on the transmitted light path, described the 3rd catoptron is set on the reflected light path, and the incident angle that arrives the laser beam of transparent cover plate upper surface from second catoptron is
, the incident angle that arrives the laser beam of transparent cover plate upper surface from the 3rd catoptron is
Preferably, described data processing module is arranged in the outer bucket of sensor, and is installed on the circuit board, and the power module of LASER Light Source also is installed on this circuit board.
The present invention compared with prior art has tangible advantage and beneficial effect, particularly, as shown from the above technical solution: system of the present invention can monitor surface temperature, the ponding/accumulated snow/relevant expressway weather parameters such as dry condition on highway relevant road segments ambient pressure, atmospheric temperature, atmospheric humidity, wind direction, wind speed, visibility, radiation, sunshine, precipitation, ice and snow and the face of land in real time.This system is fit to the highway application scenario of environmental baseline complexity, reliable operation, cost performance height and long service life.
For more clearly setting forth architectural feature of the present invention and effect, the present invention is described in detail below in conjunction with accompanying drawing and specific embodiment.
Description of drawings
Fig. 1 is the structure diagram of the present invention's embodiment;
Fig. 2 is the detail of construction of the present invention's embodiment;
Fig. 3 is the functional structure chart of microprocessor among the present invention's the embodiment;
Fig. 4 is the circuit diagram of surface temperature sensor among the present invention's the embodiment;
Fig. 5 is the structural drawing of surface pond/accumulated snow/dry sensor among the present invention's the embodiment.
The accompanying drawing identifier declaration:
A, weather monitoring point apparatus B, control terminal
1, weather monitoring unit, ground 2, face of land Condition Monitoring Unit
3, lightning protection device 4, data acquisition circuit
5, CAN bus 6, CAN bus transceiving driver
7, microprocessor 8, RS232 communication interface circuit
9, GSM/GPRS remote communication module 10, baroceptor
11, atmosphere temperature transducer 12, atmospheric humidity sensor
13, wind transducer 14, air velocity transducer
15, visibility sensor 16, radiation sensor
17, sunshine recorder 18, precipitation sensor
19, ice and snow sensor 20, GSM/GPRS remote communication module
21, monitoring display module 22, PC workstation
23, energy gap reference power supply
24, bleeder circuit 25, pre-amplification circuit
26, second level amplifying circuit 27, transparent cover plate
28, LASER Light Source 29, optical frames group
30, prism wedge 31, imageing sensor
32, data processing module 33, first catoptron
34, semi-transparent semi-reflecting lens 35, second catoptron
36, the 3rd catoptron 37, power module
38, surface temperature sensor 39, surface pond/accumulated snow/dry sensor.
Embodiment
Please refer to Fig. 1 to shown in Figure 5, it has demonstrated the concrete structure of the present invention's preferred embodiment, its by in each highway section of highway and the weather monitoring point apparatus A that lays of zone and the control terminal B that lays at the place, expressway access form.
Weather monitoring point apparatus A comprises weather monitoring unit 1, face of land Condition Monitoring Unit 2, lightning protection device 3, data acquisition circuit 4, CAN bus 5, CAN bus transceiving driver 6, microprocessor 7, RS232 communication interface circuit 8 and GSM/GPRS remote communication module 9 on the ground.
This microprocessor 7 is connected on the CAN bus 5 by CAN bus transceiving driver 6, and microprocessor 7 also is connected in GSM/GPRS remote communication module 9 by RS232 communication interface circuit 8.Be connected on the CAN bus 5 by data acquisition circuit 4 after weather monitoring unit 1 connects lightning protection device 3 on the ground.Face of land Condition Monitoring Unit 2 also is connected on the CAN bus 5 by data acquisition circuit 4.
Wherein, this weather monitoring unit, ground 1 comprises baroceptor 10, atmosphere temperature transducer 11, atmospheric humidity sensor 12, wind transducer 13, air velocity transducer 14, visibility sensor 15, radiation sensor 16, sunshine recorder 17, precipitation sensor 18, ice and snow sensor 19; each sensor of this weather monitoring unit, ground 1 all connects lightning protection device 3, can avoid the thunder and lightning infringement.
This data acquisition module is used for each simulating signal with each sensor detection, by becoming the digital signal that microprocessor 7 can be identified after amplification, the A/D conversion.
Described control terminal B is made up of GSM/GPRS remote communication module 20, monitoring display module 21 and PC workstation 22.This GSM/GPRS remote communication module 20 is connected with PC workstation 22120 by the RS232 communication interface; Monitoring display module 21 is connected with PC workstation 22 by the DVI digital visual interface.
Each sensor of weather monitoring unit, described ground 1 is installed on the other mobile jib column of road side, the middle part of mobile jib column is provided with a cabinet, is provided with above-mentioned microprocessor 7 data acquisition circuits 4, CAN bus transceiving driver 6, microprocessor 7, RS232 communication interface circuit 8 and GSM/GPRS remote communication module 9 in the cabinet; The top of mobile jib column is provided with a sensor combinations support, the sensor combinations support is provided with above-mentioned baroceptor 10, atmosphere temperature transducer 11, atmospheric humidity sensor 12, wind transducer 13, air velocity transducer 14, visibility sensor 15, radiation sensor 16, sunshine recorder 17, precipitation sensor 18, ice and snow sensor 19, and each sensor links to each other with microprocessor 7 in the cabinet by CAN bus 5.The lightning rod at the top of described lightning protection device 3 by being arranged on the mobile jib column is realized.The wireless antenna at the top of the telecommunication of described GSM/GPRS remote communication module 9 by being arranged on the mobile jib column is realized.
Described face of land Condition Monitoring Unit 2 is embedded on the road surface in advance.This face of land Condition Monitoring Unit 2 comprises surface temperature sensor 38 and surface pond/accumulated snow/dry sensor 39, this surface temperature sensor 38 can be monitored the temperature on the face of land, and this surface pond/accumulated snow/dry sensor 39 can detect the face of land and be in ponding state, accumulated snow state or drying regime.
As shown in Figure 4, this surface temperature sensor 38 is made up of preceding latter linked energy gap reference power supply 23, bleeder circuit 24, pre-amplification circuit 25 and second level amplifying circuit 26.Be provided with temperature sensor in the pre-amplification circuit 25 wherein.Temperature sensor is selected the soft substrate film thermistor of homemade Pt100 for use, fits fully with the face of land.The principle of work of this surface temperature sensor 38 is: surface temperature changes after surface temperature sensor 38 is converted to analog electrical signal, and 16 A/D circuit conversion by microprocessor 7 inside become digital signal to offer microprocessor 7 to carry out identification computing and linear the correction.
As shown in Figure 5, described surface pond/accumulated snow/dry sensor 39 comprises the outer bucket of the sensor of imbedding the road surface, the top open part of bucket is provided with the transparent cover plate 27 that flushes with the road surface outside sensor, is disposed with LASER Light Source 28, optical frames group 29, prism wedge 30 and imageing sensor 31 in the bucket outside sensor; LASER Light Source 28 is told the two-way laser beam by described optical frames group 29, and this two-way laser beam is incident to transparent cover plate 27 lower surfaces with different incident angles respectively, all some reflections of this two-way laser beam, another part arrives transparent cover plate 27 upper surfaces through refraction; If the two-way laser beam is respectively through the incident angle that refraction arrives transparent cover plate 27 upper surfaces
,
, this incident angle
Less than the cirtical angle of total reflection at water-transparent cover plate 27 interfaces, greater than the cirtical angle of total reflection at ice-transparent cover plate 27 interfaces, this incident angle
The cirtical angle of total reflection less than ice-transparent cover plate 27 interfaces; Tiltedly towards transparent cover plate 27 lower surfaces, receiving from the downward folded light beam in each interface of prism wedge 30, imageing sensor 31 is positioned at prism wedge 30 belows in order to receive laser beam, and the output terminal of imageing sensor 31 also is connected with data processing module 32.
Described optical frames group 29 is by first catoptron 33, semi-transparent semi-reflecting lens 34, second catoptron 35, the 3rd catoptron 36, LASER Light Source 28 is told transmitted light path and reflected light path by semi-transparent semi-reflecting lens 34, wherein set gradually described first catoptron 33, second catoptron 35 on the transmitted light path, described the 3rd catoptron 36 is set on the reflected light path, and the incident angle that arrives the laser beam of transparent cover plate 27 upper surfaces from second catoptron 35 is
, the incident angle that arrives the laser beam of transparent cover plate 27 upper surfaces from the 3rd catoptron 36 is
Described data processing module 32 is arranged in the outer bucket of sensor, and is installed on the circuit board, and the power module 37 of LASER Light Source 28 also is installed on this circuit board.
The present invention judge the road surface drying, ponding, details are as follows for the concrete mode of the three kinds of states that freeze:
When ponding, the road surface coverture is water, total reflection does not take place at the interface of transparent cover plate 27 and ponding layer in the 3rd catoptron 36 beam reflected, then light beam passes the interface of transparent cover plate 27 and ponding layer, locating reflection on the boundary of ponding layer and air turns back, pass transparent cover plate 27 and prism wedge 30 again, be incident upon on the imageing sensor 31.Can have 4 luminous points so on the imageing sensor 31.
When icing, the road surface coverture is ice, the 36 beam reflected generation total reflections of the 3rd catoptron, and then light beam can not enter ice sheet.3 luminous points should be arranged on the imageing sensor 31 so.
When the road surface is dry, there are not ponding layer or ice sheet on the road surface, have 2 luminous points so on the imageing sensor 31.
In sum, by the number of luminous point on the computed image sensor 31, just can judge the road surface whether dry, water arranged, freeze etc.
As shown in Figure 3, the built-in control terminal B software of described PC workstation 22 can be divided into GIS map display module, GSM/GPRS remote communication module and GIS spatial data database management module.
This GIS map display module is support with equipment such as graphics workstations, and when selected a certain monitoring point icon is clicked the mouse left button, information such as the meteorologic parameter of this point, longitude, latitude, time, monitoring point numbering will show at the terminal PC.
This GIS spatial data database management module mainly realizes storage, management and the query function to obtaining data, comprises monitoring point weather information storage, system user modification and monitoring point weather information inquiry and modification and report generation printing.
(1) monitoring point weather information storage: all monitoring point weather informations have record in database.
(2) system user is revised: consider that for information security the operation that regulation has only the user of appointment to be correlated with to native system comprises the transmission of console instruction, the inquiry of monitoring point weather information and the maintenance of facility.
(3) monitoring point weather information inquiry and repairing: database management module provides the instrument of the monitoring point weather information that interpolation, modification, deletion store in database.
(4) report generation is printed: can generate operator on duty work form and needed other form of supervision and management center and print.
The course of work of the present invention is described below:
Highway weather monitoring point is respectively after microprocessor 7 initialization, microprocessor 7 starts by each sensor that CAN bus 5 triggers weather monitoring unit 1, ground and face of land Condition Monitoring Unit 2, thereby detects the surface temperature on air pressure, atmospheric temperature, atmospheric humidity, wind direction, wind speed, visibility, radiation, sunshine, precipitation, ice and snow and the face of land of highway, the variation of ponding/accumulated snow/dry condition; Related data is packed afterwards, is wirelessly sent to control terminal B through GSM/GPRS remote communication module 9.
In addition, control terminal B also can send the instruction of acquisition request weather information by terminal GSM/GPRS remote communication module 20 at any time, the microprocessor 7 of each weather monitoring point is after GSM/GPRS remote communication module 9 is obtained and verified this instruction, activate the relevant weather data of each monitoring modular collection rapidly, and control terminal B is returned in teletransmission.
In sum, design focal point of the present invention is: system of the present invention can monitor surface temperature, the ponding/accumulated snow/relevant expressway weather parameters such as dry condition on highway relevant road segments ambient pressure, atmospheric temperature, atmospheric humidity, wind direction, wind speed, visibility, radiation, sunshine, precipitation, ice and snow and the face of land in real time.This system is fit to the highway application scenario of environmental baseline complexity, reliable operation, cost performance height and long service life.
The above, it only is preferred embodiment of the present invention, be not that technical scope of the present invention is imposed any restrictions, so every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any trickle modification, equivalent variations and modification that above embodiment does.
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| CN2013102308879A CN103295401A (en) | 2013-06-10 | 2013-06-10 | A Pavement Meteorological Condition Monitoring System |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104700629A (en) * | 2014-11-04 | 2015-06-10 | 南通大学 | System and method for monitoring and early warning agglomerate fog of highway |
| CN105425318A (en) * | 2015-12-21 | 2016-03-23 | 无锡信大气象传感网科技有限公司 | Expressway weather monitoring system with self-detection function |
| CN107248258A (en) * | 2017-07-28 | 2017-10-13 | 湖北国创高新材料股份有限公司 | A kind of icy road safety early warning device and method for early warning |
| CN108535793A (en) * | 2018-06-14 | 2018-09-14 | 安徽省大气探测技术保障中心 | A kind of monitoring of highway communication meteorological condition and warning system |
| CN110503824A (en) * | 2019-07-31 | 2019-11-26 | 贵州省交通规划勘察设计研究院股份有限公司 | A kind of traffic safety auxiliary driving method and system |
| CN111785094A (en) * | 2020-07-31 | 2020-10-16 | 上海眼控科技股份有限公司 | Advective fog detection method, device, computer equipment and readable storage medium |
| CN112669597A (en) * | 2020-12-15 | 2021-04-16 | 南京中诚签信息科技有限公司 | Urban intelligent traffic management system based on cloud service |
| CN114387809A (en) * | 2022-01-17 | 2022-04-22 | 马东旭 | Road test monitoring system based on all-weather video monitoring |
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| CN114387809A (en) * | 2022-01-17 | 2022-04-22 | 马东旭 | Road test monitoring system based on all-weather video monitoring |
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Application publication date: 20130911 |