CN105427644A - Expressway weather monitoring system - Google Patents
Expressway weather monitoring system Download PDFInfo
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- CN105427644A CN105427644A CN201510959708.4A CN201510959708A CN105427644A CN 105427644 A CN105427644 A CN 105427644A CN 201510959708 A CN201510959708 A CN 201510959708A CN 105427644 A CN105427644 A CN 105427644A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- Life Sciences & Earth Sciences (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention discloses an expressway weather monitoring system which belongs to the technical field of weather monitoring equipment. The expressway weather monitoring system comprises a signal collection unit and a wireless transmission unit disposed on an expressway as well as a wireless receiving unit and a monitoring center server which are disposed at a monitoring center, wherein the signal collection unit comprises a weather monitoring module, an environment monitoring module, a signal processing module and an FPGA module; and the monitoring center server comprises an RS decoding module, a data storage module and a display module. The system disclosed by the invention can improve effectiveness of transmission of weather data collected by the monitoring system in a severe weather environment.
Description
Technical field
The present invention relates to a kind of expressway weather monitoring system, belong to weather monitoring device technical field.
Background technology
Inclement weather phenomenon can affect express way driving safety, very easily causes the generation of traffic hazard.In addition, expressway speed is very fast, such as, if due to the lower initiation traffic hazard of visibility, often can cause chain reaction, form the traffic hazard that many cars collide continuously.Therefore, the monitoring of the road weather of highway is just seemed particularly important.
Application number is 201210177451.3, the applying date is that the application for a patent for invention on June 1st, 2012 discloses a kind of highway bad weather watch system based on radio sensing network, comprise multiple environment monitoring device of arranging according to certain distance on a highway and the car-mounted device configured in each automobile, the highway severe weather conditions information that monitors is given described car-mounted device by radio sensing network protocol transmission by described environment monitoring device, described car-mounted device by the information that receives by the map of GPS automatic navigator by the definite position message of this information to driver, to grasp the weather conditions in section.The monitoring system that this invention provides, can realize the boisterous Real-Time Monitoring of highway, and by this advance notice driver, enables driver intuitively grasp the weather conditions in section, prevent traffic accident.
Application number is 201310735765.5, and the applying date is the highway real-time monitoring system under the application for a patent for invention on Dec 28th, 2013 discloses a kind of bad weather condition.The change of weather condition, particularly exceedingly odious weather condition, travel to the vehicle of highway and bring huge risk, not only have a strong impact on communications and transportation, but also cause the heavy losses of national wealth and people's lives and properties.The composition of this invention comprises: weather information detector module (1), described weather information detector module is connected with data collector (2), described data collector is connected with front end processing device (3), and described front end processing device is connected with manual controller (4), communication interface (5), PC (6) respectively.The weather environment that this invention is used for highway carries out Real-Time Monitoring.
Application number is 201410441504.7, the applying date is that this invention on September 1st, 2014 proposes a kind ofly have real-time Communication for Power, the expressway safety of function of safety protection passes through device, comprises expressway safety visa card, the vehicle-mounted OBU matched with expressway safety visa card, the roadside unit (RSU) communicated with vehicle-mounted OBU is housed.Safe passing is placed in board units (OBU), utilizes Dedicated Short Range Communications, technology (DSRC) to communicate, inform the running information that driver should note in real time.Especially, by mutual, the computing of data, block the generation of fault chains, chain of rings vehicle on highway accident caused harm reduces to minimum.This invention described expressway safety visa card is omnidistance locked in vehicle-mounted OBU, can prevent vehicle from evading highway toll; Use DSRC to communicate, can ensure communication quality under severe weather conditions, DSRC communication module has encryption function simultaneously, can ensure the security communicated.
Current expressway weather monitoring system mainly stresses gather various weather information and provide early warning information, but when weather condition is severe, the weather information that monitoring system collects transmit time may make a mistake or information transmission imperfect, the early warning information provided is likely devious, is unfavorable for like this carrying out preventive measure in advance.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of expressway weather monitoring system, under atrocious weather environment, improve the validity of the weather data transmission that monitoring system gathers.
The present invention adopts following technical scheme for solving its technical matters:
A kind of expressway weather monitoring system, comprise setting signal gathering unit on a highway and wireless transmission unit, and be arranged on radio receiving unit and the monitoring central server of Surveillance center, described signal gathering unit comprises weather monitoring module, environment monitoring module, signal processing module and FPGA module, described monitoring central server comprises RS decoder module, data memory module and display module, wherein weather monitoring module is connected with signal processing module respectively with environment monitoring module, signal processing module, FPGA module, wireless transmission unit, radio receiving unit, RS decoder module, data memory module and display module are linked in sequence,
Described weather monitoring module, for gathering the weather information of highway;
Described environment monitoring module, for gathering the environmental information of highway;
Described signal processing module, for carrying out filtering noise reduction process to the signal of weather monitoring module and environment monitoring module transmission;
Described FPGA module, for carrying out RS coding encrypting by the weather information after signal processing module process and environmental information by fpga chip;
Described wireless transmission unit, for adopting wireless mode to send the weather information after encryption and environmental information;
Described wireless receiving module, for receiving the weather information after encryption and environmental information;
Described RS decoder module, for decoding the weather information after encryption and environmental information;
Described data memory module, for storing decoded weather information and environmental information;
Described display module, for showing weather information and environmental information intuitively.
As a preferred technical solution of the present invention: described weather monitoring module comprises sleet sensor, air velocity transducer and wind transducer.
As a preferred technical solution of the present invention: described air velocity transducer is ultrasonic wind speed sensor.
As a preferred technical solution of the present invention: described signal gathering unit adopts Alternating Current Power Supply and storage battery power supply two kinds of modes.
As a preferred technical solution of the present invention: described accumulator is connected with solar panel.
As a preferred technical solution of the present invention: the model of described fpga chip is EP2C5Q208C8N.
A kind of expressway weather monitoring system of the present invention, adopts above technical scheme compared with prior art, has following technique effect:
1, the present invention carries out RS coding encrypting to the weather information of transmission and environmental information, and RS code is a kind of reflected code, has rigorous Algebraic Structure, and when code check is fixed, it has larger error correcting capability, can improve the reliability of data transmission.
2, the present invention uses fpga chip to carry out gate level circuit realization to RS coding, compares the SOC (system on a chip) such as single-chip microcomputer (SOC) technology and can realize coding more fast, thus decreases weather data from gathering the time delay arriving receiving end through transmission.
3, the present invention can reduce the transmission error code situation of wireless transmission weather data under terrible weather environment, thus improves data validity.
4, signal gathering unit of the present invention adopts Alternating Current Power Supply and accumulator two kinds of power supply modes, if AC-powered breaks down, namely enables storage battery power supply, ensures the continuity of signals collecting.
5, accumulator of the present invention is connected with solar panel, environmental protection, economize energy.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of expressway weather monitoring system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention is described in further details.
A kind of expressway weather monitoring system as shown in Figure 1, comprise setting signal gathering unit on a highway and wireless transmission unit, and be arranged on radio receiving unit and the monitoring central server of Surveillance center, described signal gathering unit comprises weather monitoring module, environment monitoring module, signal processing module and FPGA module, described monitoring central server comprises RS decoder module, data memory module and display module, wherein weather monitoring module is connected with signal processing module respectively with environment monitoring module, signal processing module, FPGA module, wireless transmission unit, radio receiving unit, RS decoder module, data memory module and display module are linked in sequence,
Described weather monitoring module, for gathering the weather information of highway;
Described environment monitoring module, for gathering the environmental information of highway;
Described signal processing module, for carrying out filtering noise reduction process to the signal of weather monitoring module and environment monitoring module transmission;
Described FPGA module, for carrying out RS coding encrypting by the weather information after signal processing module process and environmental information by fpga chip;
Described wireless transmission unit, for adopting wireless mode to send the weather information after encryption and environmental information;
Described wireless receiving module, for receiving the weather information after encryption and environmental information;
Described RS decoder module, for decoding the weather information after encryption and environmental information;
Described data memory module, for storing decoded weather information and environmental information;
Described display module, for showing weather information and environmental information intuitively.
As a preferred technical solution of the present invention: described weather monitoring module comprises sleet sensor, air velocity transducer and wind transducer.
As a preferred technical solution of the present invention: described air velocity transducer is ultrasonic wind speed sensor.
As a preferred technical solution of the present invention: described signal gathering unit adopts Alternating Current Power Supply and storage battery power supply two kinds of modes.
As a preferred technical solution of the present invention: described accumulator is connected with solar panel.
As a preferred technical solution of the present invention: the model of described fpga chip is EP2C5Q208C8N.
The present invention carries out RS coding encrypting to the weather information of transmission and environmental information, and RS code is a kind of reflected code, has rigorous Algebraic Structure, and when code check is fixed, it has larger error correcting capability, can improve the reliability of data transmission.
RS code is also known as inner institute code, i.e. Reed-solomoncodes is a kind of chnnel coding of forward error correction, effective to the polynomial expression produced by correction over-sampling data.First cataloged procedure asks redundancy to these polynomial expressions on multiple point, is then transmitted or stores.Polynomial expression overdetermination (cross and limit) is made to the polynomial this sampling exceeding essential value.When receiver correct receive enough points after, it just can recover original polynomial expression, even if the polynomial expression received has a lot of point by noise distortion.
RS (Reed-Solomon) code is the special non-binary BCH codes that a class error correcting capability is very strong.Can construct for optional positive integer S the q system BCH code that a corresponding code length is n=qS-1, and q is as the power of certain prime number.Work as S=1, the q system BCH code of the code length n=q-1 set up during q>2, claim it to be RS code.Work as q=2
m(m>1), its symbol is taken from F (2
m) scale-of-two RS code can be used to correct burst error, it is the most frequently used RS code.
The present invention uses fpga chip to carry out gate level circuit realization to RS coding, compares the SOC (system on a chip) such as single-chip microcomputer (SOC) technology and can realize coding more fast, thus decreases weather data from gathering the time delay arriving receiving end through transmission.
FPGA(Field-ProgrammableGateArray), i.e. field programmable gate array, it is the product further developed on the basis of the programming devices such as PAL, GAL, CPLD.It occurs as a kind of semi-custom circuit in special IC (ASIC) field, has both solved the deficiency of custom circuit, overcomes again the shortcoming that original programming device gate circuit number is limited.
In weather monitoring system of the present invention, air velocity transducer is ultrasonic wind speed sensor.Ultrasonic wind speed sensor utilizes ultrasound wave time difference method to realize the measurement of wind speed.The aerial velocity of propagation of sound, can and wind direction on gas velocity superpose.If hyperacoustic direction of propagation is identical with wind direction, its speed can be accelerated; Otherwise if if hyperacoustic direction of propagation is contrary with wind direction, its speed can be slack-off.Therefore, under fixing testing conditions, the speed that ultrasound wave is propagated in atmosphere can be corresponding with function of wind speed.Accurate wind speed and direction can be obtained by calculating.
Signal gathering unit of the present invention adopts Alternating Current Power Supply and accumulator two kinds of power supply modes, if AC-powered breaks down, namely enables storage battery power supply, ensures the continuity of signals collecting.Accumulator of the present invention is connected with solar panel, environmental protection, economize energy.
The advantage of sun power is as follows: (1) is general: solar light cultivated illumination the earth, does not have restriction no matter land or the ocean of region,
No matter high mountain or island, all have everywhere, can directly development and utilization, are convenient to gather, and need not exploit and transport.(2) harmless: develop sun power and do not pollute the environment, it is one of most clean energy resource, in today that environmental pollution is more and more serious, this point is extremely valuable.(3) huge: the annual solar radiant energy arrived on earth surface is about equivalent to 130,000,000,000,000 tons of coals, and its total amount belongs to the maximum energy can developed in the world now.(4) permanent: the nuclear energy rate estimation produced according to the sun, the reserves of hydrogen enough maintain over ten billion year, and the life-span of the earth is also about tens years, in this sense, can say that the energy of the sun is nexhaustible.
Above embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.
Claims (6)
1. an expressway weather monitoring system, it is characterized in that, comprise setting signal gathering unit on a highway and wireless transmission unit, and be arranged on radio receiving unit and the monitoring central server of Surveillance center, described signal gathering unit comprises weather monitoring module, environment monitoring module, signal processing module and FPGA module, described monitoring central server comprises RS decoder module, data memory module and display module, wherein weather monitoring module is connected with signal processing module respectively with environment monitoring module, signal processing module, FPGA module, wireless transmission unit, radio receiving unit, RS decoder module, data memory module and display module are linked in sequence,
Described weather monitoring module, for gathering the weather information of highway;
Described environment monitoring module, for gathering the environmental information of highway;
Described signal processing module, for carrying out filtering noise reduction process to the signal of weather monitoring module and environment monitoring module transmission;
Described FPGA module, for carrying out RS coding encrypting by the weather information after signal processing module process and environmental information by fpga chip;
Described wireless transmission unit, for adopting wireless mode to send the weather information after encryption and environmental information;
Described wireless receiving module, for receiving the weather information after encryption and environmental information;
Described RS decoder module, for decoding the weather information after encryption and environmental information;
Described data memory module, for storing decoded weather information and environmental information;
Described display module, for showing weather information and environmental information intuitively.
2. a kind of expressway weather monitoring system according to claim 1, is characterized in that, described weather monitoring module comprises sleet sensor, air velocity transducer and wind transducer.
3. a kind of expressway weather monitoring system according to claim 2, is characterized in that, described air velocity transducer is ultrasonic wind speed sensor.
4. a kind of expressway weather monitoring system according to claim 1, is characterized in that, described signal gathering unit adopts Alternating Current Power Supply and storage battery power supply two kinds of modes.
5. a kind of expressway weather monitoring system according to claim 4, is characterized in that, described accumulator is connected with solar panel.
6. a kind of expressway weather monitoring system according to claim 1, is characterized in that, the model of described fpga chip is EP2C5Q208C8N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510959708.4A CN105427644A (en) | 2015-12-21 | 2015-12-21 | Expressway weather monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510959708.4A CN105427644A (en) | 2015-12-21 | 2015-12-21 | Expressway weather monitoring system |
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| CN105427644A true CN105427644A (en) | 2016-03-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106652459A (en) * | 2017-02-28 | 2017-05-10 | 北京航空航天大学 | Intelligent roadside traffic air pollution monitoring system |
| CN111445714A (en) * | 2020-04-09 | 2020-07-24 | 安徽皖通科技股份有限公司 | Predictable severe weather analysis method for expressway |
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