CN105024752A - Special vehicle management and control device based on white-light LED based wireless communication - Google Patents
Special vehicle management and control device based on white-light LED based wireless communication Download PDFInfo
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- CN105024752A CN105024752A CN201510214936.9A CN201510214936A CN105024752A CN 105024752 A CN105024752 A CN 105024752A CN 201510214936 A CN201510214936 A CN 201510214936A CN 105024752 A CN105024752 A CN 105024752A
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Abstract
The invention relates to a special vehicle management and control device based on white-light LED based wireless communication. The special vehicle management and control device comprises a fixed monitoring point and a vehicle, and is characterized in that the fixed monitoring point is provided with a downlink transceiving system, an uplink transceiving system is installed on the vehicle, a lower photoelectric receiving system and a lower LED driving system are arranged on the downlink transceiving system, the lower LED driving system is connected with an LED light lamp, the lower photoelectric receiving system is connected with a lower photoelectric detector, an upper photoelectric receiving system and an upper LED driving system are arranged on the uplink transceiving system, the upper LED driving system is connected with a daytime running lamp of the vehicle, the upper photoelectric receiving system is connected with an upper photoelectric detector, and lenses are arranged right ahead the daytime running lamp of the vehicle and the upper photoelectric detector respectively. The special vehicle management and control device based on white-light LED based wireless communication has the beneficial effects of being very safe for human, being rich in resources, having good communication confidentiality, requiring no radio spectrum license, having no electromagnetic interference, and being suitable for various occasions.
Description
(1) technical field
The present invention relates to a kind of vehicle control device, particularly a kind of special vehicle control device based on white light LEDs radio communication.
(2) background technology
Along with the development and application of electronic information technology, occur that specialty is the monitoring management dispatching platform of the special trade exploitations such as oil truck, Transportation of Dangerous Chemicals car, 120 emergency tenders, establish signaling pathway rapid, accurate and effective between special vehicle and Surveillance center, Surveillance center can grasp vehicle-state at any time, assigns dispatching command rapidly.For oil truck, system synthesis have employed radio communication, and the multiple technologies means such as electronic lead sealing, dangerous material status information capture, satellite fix, video monitoring, realize the integrated management to oil truck.Radio communication aspect comprises again two kinds, and one is for closely vehicle communication, for the exchange of the data such as vehicle access control, mission bit stream, oil tank liquid level information, is generally realized by communication modes such as bluetooth, WIFI, vehicular stations; Two is realize the position of vehicle, travel condition of vehicle, the state information of transport product and the real-time, interactive of live video, mainly based on the telecommunication that the mode of commmunication company's communication network and vehicular station realizes.At present, substantially all special vehicles have all installed similar system.
In actual environment, powerful communication equipment is used to need to the corresponding channel of radio control unit application, larger radio radiation is had in use procedure, larger to the environmental impact of people and surrounding, for security consideration, some place prohibits the use twireless radio-frequency communication, and such as gas station, oil depot etc. have near combustibles, this just causes special vehicle management system cannot carry out data interaction timely and effectively, cannot meet routine work needs.
(3) summary of the invention
The present invention in order to make up the deficiencies in the prior art, provide a kind of very safe to the mankind, aboundresources, communication security are good, without the need to radio-frequency spectrum card, without electromagnetic interference, the special vehicle control device based on white light LEDs radio communication being applicable to various occasion.
The present invention is achieved through the following technical solutions:
A kind of special vehicle control device based on white light LEDs radio communication, comprise fixing control point and vehicle, it is characterized in that: described fixing control point is provided with down link receive-transmit system, vehicle is provided with up link receive-transmit system, down link receive-transmit system is provided with lower photoelectric receiving system and lower LED drive system, lower LED drive system is connected with LED illumination lamp, lower photoelectric receiving system is connected with lower photodetector, up link receive-transmit system is provided with photoelectric receiving system and upper LED drive system, upper LED drive system is connected with vehicle day portable lighter, upper photoelectric receiving system is connected with photodetector, vehicle day portable lighter and upper photodetector dead ahead be respectively equipped with lens.
Described lower photoelectric receiving system and lower LED drive system are connected with lower data receiver transmission processing system respectively, and lower data receiver transmission processing system is connected with lower power supply interface system; Upper photoelectric receiving system and upper LED drive system are connected with upper data receiver transmission processing system respectively, and upper data receiver transmission processing system is connected with upper power supply interface system.
Described lower LED drive system and upper LED drive system are respectively equipped with radiating circuit, and lower photoelectric receiving system and upper photoelectric receiving system are respectively equipped with receiving circuit.
Described radiating circuit is made up of encoder and driver.
Described receiving circuit is made up of preamplifier, main amplifier, equalizer and decoder.
Clock extractor and arbiter is connected with between described main amplifier front end and equalizer rear end.
The invention has the beneficial effects as follows:
(1), have transmitting power high, do not take radio-frequency spectrum, without the advantage such as electromagnetic interference, electromagnetic-radiation-free, well solve the problem that the special occasions such as gas station, oil depot, airport, hospital prohibit the use twireless radio-frequency communication.
(2), can various occasion and administrative center real-time carry out data communication, the operation information of the understanding vehicle making administrative staff real-time, even can the operation of remote control vehicle; Improve integrated management ability, more reasonably scheduling transportation vehicle, decreases input, reduces the loss that human error causes.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 1 is structured flowchart of the present invention;
Accompanying drawing 2 is radiating circuit theory diagram of the present invention;
Accompanying drawing 3 is receiving circuit theory diagram of the present invention;
Accompanying drawing 4 is connection block diagram of the present invention;
Accompanying drawing 5 is data transmission and reception FB(flow block) of the present invention.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises fixing control point and vehicle, fixing control point is provided with down link receive-transmit system, vehicle is provided with up link receive-transmit system, down link receive-transmit system is provided with lower photoelectric receiving system and lower LED drive system, lower LED drive system is connected with LED illumination lamp, lower photoelectric receiving system is connected with lower photodetector, up link receive-transmit system is provided with photoelectric receiving system and upper LED drive system, upper LED drive system is connected with vehicle day portable lighter, upper photoelectric receiving system is connected with photodetector, vehicle day portable lighter and upper photodetector dead ahead be respectively equipped with lens.Lower photoelectric receiving system and lower LED drive system are connected with lower data receiver transmission processing system respectively, and lower data receiver transmission processing system is connected with lower power supply interface system; Upper photoelectric receiving system and upper LED drive system are connected with upper data receiver transmission processing system respectively, and upper data receiver transmission processing system is connected with upper power supply interface system.Lower LED drive system and upper LED drive system are respectively equipped with radiating circuit, and lower photoelectric receiving system and upper photoelectric receiving system are respectively equipped with receiving circuit.Radiating circuit is made up of encoder and driver.Receiving circuit is made up of preamplifier, main amplifier, equalizer and decoder.Clock extractor and arbiter is connected with between main amplifier front end and equalizer rear end.
Adopt a kind of special vehicle control device based on white light LEDs radio communication of the present invention, object is that providing a kind of is prohibitting the use the spendable wireless data communication device of the special occasions of twireless radio-frequency communication, realized based on white light LEDs visible light communication by the illuminating lamp of reequiping vehicle, replace original in communications such as bluetooth, WLAN (wireless local area network) and radio stations, stop the safety problem of accident potential that electromagnetic radiation causes, environmental pollution and information leakage etc.
Adopt a kind of special vehicle control device based on white light LEDs radio communication of the present invention, there is provided based on LED visible light duplex communication, be divided into up link and down link two modules, uplink downlink composition, all by power and communications interface unit, data transmit-receive processing unit, LED drive circuit and opto-electronic receiver unit form, installs on special vehicle and fixing control point respectively.They constitute complete LED-based visible light communication link.In down link, rely on the original management system of fixing point, replace wireless radio-frequency communication module wherein, original system data transmission interface is connected with this device, exchanges data is realized by arranging interface standard, need the data sent through different manchester encoding, by the driver module of the signal loading after coding to LED, driving LED illuminating lamp, the modulation signal that LED illumination lamp sends through lens focus on the photodetector of receiving terminal, light signal is converted to the signal of telecommunication, through opto-electronic receiver module, signal is amplified, equilibrium finally recovers and transmits, completion system is to the transmission of the data of terminal.The operation principle of up link is similar to down link.Because up link is arranged on special car, adopt the mode reequiping or install additional day portable lighter or vehicle-mounted illuminating lamp, vehicle drives to the collimated illumination that predeterminated position can realize light, each angle light can all converge on photodetector by the receiving terminal mounting spherical lens of down link, through corresponding processing of circuit, recover terminal transmission to the data of system.
Adopt a kind of special vehicle control device based on white light LEDs radio communication of the present invention, hardware designs adopts intensity modulated/direct-detection (IM/DD) mode being applicable to small data quantity exchanges data, improve communication efficiency.Function according to each unit carries out circuit design respectively.
1, power supply circuits
The installation respectively of uplink downlink equipment and diverse location, supply power mode is also different, down link adopts fixed form to install, there is stable civil power access, select existing stable switch power supply as system power supply, vehicle-mounted supply power mode, oil truck generally adopts Ledate acid powered battery, supply power voltage 24V, battery adopts existing DC decompression integrated regulator to realize vehicle-mounted end uplink modules and powers.
2, interface conversion circuit
The interface conversion circuit provided in the design has two kinds, the translation function of Ethernet interface conversion and RS232 serial communication port respectively, rs 232 serial interface signal directly can be sent to coding circuit, supports the MLT-3 code conversion of Ethernet bipolarity three level as arriving unipolar code.The same MLT-3 coding unipolar code from optical receiver being transformed into the bipolarity three level of applicable Double-strand transmission by change-over circuit.In addition, the functions such as the regeneration of Clock Extraction, signal decision and data retransmission are also had.The working method of ethernet medium modular converter is storage forwarding, does not carry out Code And Decode process to 4B5B coding.This processing mode ignores all error codes, but can exchange the minimal time delay of transfer of data for by sacrificing error-correcting performance.
3, transmitting terminal circuit
Radiating circuit is made up of encoder and driver, and signal carries out Synchronization process via encoder, and wherein encoder adopts single-chip microcomputer, can realize different codings according to actual needs like this.But because the output current of single-chip microcomputer is too little, be not enough to driving LED lamp, by design driven circuit, this device adopts constant-current source mode driving LED, and the mode adopting connection in series-parallel to combine connects, and ensures the luminous efficiency of LED.
4, receiving terminal circuit
Optical receiving circuit is made up of following components: photodetector, pre-amplification circuit, main amplifying circuit, automatic gain control circuit (APC), equalizer, Clock Extraction and decision circuit.Photodetector is positioned at optical receiving circuit foremost, completes light pulse signal and changes electric impulse signal into.Pre-amplification circuit and photodetector appropriate design, can increase the signal of telecommunication signal to noise ratio after conversion.The undistorted amplification of main amplifying circuit is through the output signal of telecommunication of preamplifier, and the level magnitudes of output signal is stable to be realized by automatic gain control circuit, eventually passes the digital signal that equalizer, clock extracting circuit and decision circuit obtain regeneration.
Adopt a kind of special vehicle control device based on white light LEDs radio communication of the present invention, compare with other light wireless communications with traditional radio communication, visible light communication has following outstanding advantages: (1) visible ray is very safe to the mankind; (2) visible ray aboundresources; (3) communication security is good; (4) demonstrate,prove without the need to radio-frequency spectrum; (5) without electromagnetic interference.Also be badly in need of wanting a kind of means of communication to solve electromagnetic interference problem in some special occasions (as gas station, oil depot, hospital and airport etc.).Existing special vehicle management system adopts RF-wise to carry out radio communication mostly, has clear and definite function distinguishing for radio communication device, can directly with the replacement of visible light communication device.In deployed with devices process, need the manpower and materials of input relatively less, save a large amount of later stages after changing and drop into.Existing interface data conversion, modulation and coding techniques are current techiques, at multiple twireless radio-frequency communication, optical fiber communication etc. are widely used, the manufacturing technology of existing LED, can meet the needs of radio communication, after adding communication function, not affect illumination functions.
Claims (6)
1. the special vehicle control device based on white light LEDs radio communication, comprise fixing control point and vehicle, it is characterized in that: described fixing control point is provided with down link receive-transmit system, vehicle is provided with up link receive-transmit system, down link receive-transmit system is provided with lower photoelectric receiving system and lower LED drive system, lower LED drive system is connected with LED illumination lamp, lower photoelectric receiving system is connected with lower photodetector, up link receive-transmit system is provided with photoelectric receiving system and upper LED drive system, upper LED drive system is connected with vehicle day portable lighter, upper photoelectric receiving system is connected with photodetector, vehicle day portable lighter and upper photodetector dead ahead be respectively equipped with lens.
2. a kind of special vehicle control device based on white light LEDs radio communication according to claim 1, it is characterized in that: described lower photoelectric receiving system and lower LED drive system are connected with lower data receiver transmission processing system respectively, lower data receiver transmission processing system is connected with lower power supply interface system; Upper photoelectric receiving system and upper LED drive system are connected with upper data receiver transmission processing system respectively, and upper data receiver transmission processing system is connected with upper power supply interface system.
3. a kind of special vehicle control device based on white light LEDs radio communication according to claim 1, it is characterized in that: described lower LED drive system and upper LED drive system are respectively equipped with radiating circuit, lower photoelectric receiving system and upper photoelectric receiving system are respectively equipped with receiving circuit.
4. a kind of special vehicle control device based on white light LEDs radio communication according to claim 3, is characterized in that: described radiating circuit is made up of encoder and driver.
5. a kind of special vehicle control device based on white light LEDs radio communication according to claim 3, is characterized in that: described receiving circuit is made up of preamplifier, main amplifier, equalizer and decoder.
6. a kind of special vehicle control device based on white light LEDs radio communication according to claim 5, is characterized in that: be connected with Clock extractor and arbiter between described main amplifier front end and equalizer rear end.
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| CN105352524A (en) * | 2015-11-27 | 2016-02-24 | 芜湖宏景电子股份有限公司 | Intelligent IOS vehicle navigator |
| CN105679005A (en) * | 2016-01-18 | 2016-06-15 | 南京航空航天大学 | Rotating apparatus non-contact signal transmission apparatus based on LIFI and infrared light |
| CN106160859A (en) * | 2016-07-01 | 2016-11-23 | 中国铁道科学研究院 | A kind of CBTC system based on visible light communication |
| CN107689827A (en) * | 2017-07-12 | 2018-02-13 | 北京空间飞行器总体设计部 | A kind of remote sensing satellite high speed load data optical fiber coffret |
| CN107909853A (en) * | 2017-10-24 | 2018-04-13 | 南京邮电大学 | Support visible light communication (VLC) intelligent transportation system of bilateral positioning |
| CN108400817A (en) * | 2018-03-19 | 2018-08-14 | 西安电子科技大学 | A kind of visible light communication method for transmitting Manchester's code based on serial ports |
| CN110546521A (en) * | 2017-05-01 | 2019-12-06 | 伊顿智能动力有限公司 | wireless monitoring and configuration tether for use with isolated industrial products and method of operating same |
| CN112235047A (en) * | 2020-10-14 | 2021-01-15 | 厦门大学 | Screen two-way communication system based on visible light communication |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105352524A (en) * | 2015-11-27 | 2016-02-24 | 芜湖宏景电子股份有限公司 | Intelligent IOS vehicle navigator |
| CN105679005A (en) * | 2016-01-18 | 2016-06-15 | 南京航空航天大学 | Rotating apparatus non-contact signal transmission apparatus based on LIFI and infrared light |
| CN106160859A (en) * | 2016-07-01 | 2016-11-23 | 中国铁道科学研究院 | A kind of CBTC system based on visible light communication |
| CN110546521A (en) * | 2017-05-01 | 2019-12-06 | 伊顿智能动力有限公司 | wireless monitoring and configuration tether for use with isolated industrial products and method of operating same |
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| CN107689827A (en) * | 2017-07-12 | 2018-02-13 | 北京空间飞行器总体设计部 | A kind of remote sensing satellite high speed load data optical fiber coffret |
| CN107909853A (en) * | 2017-10-24 | 2018-04-13 | 南京邮电大学 | Support visible light communication (VLC) intelligent transportation system of bilateral positioning |
| CN108400817A (en) * | 2018-03-19 | 2018-08-14 | 西安电子科技大学 | A kind of visible light communication method for transmitting Manchester's code based on serial ports |
| CN112235047A (en) * | 2020-10-14 | 2021-01-15 | 厦门大学 | Screen two-way communication system based on visible light communication |
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Application publication date: 20151104 |