CN103730019A - Radio frequency identification (RFID) based traffic sign intelligent display voice system - Google Patents
Radio frequency identification (RFID) based traffic sign intelligent display voice system Download PDFInfo
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- CN103730019A CN103730019A CN201410013841.6A CN201410013841A CN103730019A CN 103730019 A CN103730019 A CN 103730019A CN 201410013841 A CN201410013841 A CN 201410013841A CN 103730019 A CN103730019 A CN 103730019A
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Abstract
The invention discloses a RFID based traffic sign intelligent display voice system. The system comprises a RFID reader, a vehicle-mounted display voice unit, an external circularly polarized antenna and a roadside electronic tag device. The RFID reader comprises a control unit module, a radio frequency module, an antenna interface, a fist power supply module and a first serial port communication module. The vehicle-mounted display voice unit comprises a second power supply module, a single-chip microcomputer, a liquid crystal display (LCD), a WAV voice play module and a second serial port communication module. According to the system, traffic sign information is obtained through active collection of electronic tags, and a vehicle driver only needs to take corresponding measures according to voice prompt and LCD visual information feedback, so that hidden danger of traffic accidents due to the failure to understand front zebra crossing situations caused by interference of peripheral vehicles to the driver vision are eliminated; road traffic resources such as traffic signals, signs or identifications are replaced by electronic tags, and complex diversified traffic signs are integrated into visual information.
Description
Technical field
The present invention adopts radio RF recognition technology (RFID) to realize intelligent display and the voice message of road signs, belongs to Internet of Things and wisdom field of traffic, particularly a kind of traffic sign intelligent display voice system based on RFID.
Background technology
Urban highway traffic flag information express be sharpness, integrity degree and systematic height with the performance of Urban Road Function, the facility of citizens' activities and safe coefficient are closely bound up.It is the importance that represents city modern civilization that the road signs information of hommization is expressed.The outstanding problem of urban highway traffic sign shows following aspect: 1. category of roads is lower, and traffic sign is more difficult to meet the demands; 2. information display mode is more single; 3. in urban transportation sign, an emphasis is informed road name, and near the trip guiding function of the communal facilitys such as hospital road is paid attention to not; 4. traffic sign content is unclear, affects its visibility; 5. in the path space in city, gorgeous advertisement has taken a large amount of urban road space resources, and traffic sign locational space is not being met etc.Due to these problems that exist, it is unreasonable that urban transportation sign arranges, and makes its information representation unintelligible, imperfect, reduced to a certain extent the service level of public transport, and increased the insecurity of road traffic.At present, the road signs information that the vehicle-mounted utility appliance such as navigation provides is very limited.Therefore, necessaryly provide a kind of traffic sign intelligent display system based on RFID, adopt RFID automatic identifying method initiatively to gather trackside electronic tag data, by the mode of liquid crystal display demonstration and speech play in car, express road signs information complete, system.This system has recognition speed and soon, is not subject to the features such as environmental interference, investment cost be low.
Summary of the invention
The present invention, in order to improve sharpness, integrity degree and the systematicness of road signs information representation, provides a kind of traffic sign intelligent display system based on RFID.
The present invention is achieved in that the traffic sign intelligent display system based on RFID comprises RFID reader, car-mounted display voice device, external circular polarized antenna and trackside electronic label device.
RFID reader comprises control module module, radio-frequency module, antennal interface, power module one and serial communication modular one.
Car-mounted display voice device comprises power module two, single-chip microcomputer, LCDs (LCD), waveform phonetic matrix (WAV) voice playing module and serial communication modular two.
Wherein, antennal interface is connected with external circular polarized antenna, and external circular polarized antenna is installed on car right side rearview mirror below, during installation and car door be 30 ° to 40 ° angles, direction is aimed at walkway or greenbelt edge step, thereby avoids the leak situation of reading tag to occur.In addition, serial communication modular one is connected with the serial communication modular two of car-mounted display warning device, and control module module is connected with power module one, and radio-frequency module is connected with control module module respectively with serial communication modular one.LCDs is connected with single-chip microcomputer respectively with WAV voice playing module, and serial communication modular two is connected with the serial communication modular one of RFID reader, and single-chip microcomputer, LCDs are connected with power module two respectively.
Trackside electronic label device comprises source electronic tag, movable groove, circular locking window, rectangular parallelepiped protection box and special greenbelt edge stone.
Operation to the traffic sign intelligent display voice system based on RFID is as follows:
1, active electronic label writes fixing product electronic code (EPC) data, each EPC data corresponding specific road signs information; Active electronic label order is packed in corresponding trackside electronic label device; Trackside electronic label device is embedded in walkway or special stone inside, greenbelt edge, and walkway or special greenbelt edge stone have a circular locking window, for the protection of interior arrangement; Interior arrangement comprises an active electronic label, a movable groove and a rectangular parallelepiped protection box.
2, open or close RFID reader power supply, to adjust the duty of RFID reader; RFID reader communicates with wireless mode and active electronic label by external circular polarized antenna, receives the radiofrequency signal of the active electronic label that also demodulation collects; The operation of active electronic label identification code and rdma read data is obtained in realization.
3, open or close car-mounted display voice device power supply, to adjust the duty of car-mounted display voice device, control RFID reader simultaneously and start or stop to receive active electronic label data; By serial communication modular and RFID reader communication; The EEPROM storage data that single-chip microcomputer comprises comprise: sign numbering, pattern, scene text explanation and speech data.After the data that single-chip microcomputer reads according to certain procedures processing RF ID reader, be transferred to LCDs and show, and control WAV voice playing module voice message road signs information.
The workflow of this system is when running car is during near trackside electronic label device, RFID reader receives the signal from active electronic label by external circular polarized antenna, single-chip microcomputer is processed No. EPC of receiving, and judges whether the 1st, the 5th, the 9th, the 13rd, the 17th, the 21st X of No. EPC equals 0.If X=1, reads the 2nd, 3,4, what this three figure place was corresponding is the numbering of warning notice; If X=2, reads the 6th, 7,8, what this three figure place was corresponding is the numbering of prohibitory sign; By that analogy, if X=6 reads the 22nd, 23,24, what this three figure place was corresponding is the numbering of auxiliary sign.Finally, the explanation of pattern, scene text and speech data that single-chip microcomputer will coupling reference numeral, and control car-mounted display voice device and show and speech play.
The object of the invention is to feed back by vision and information acoustically, when allowing motor vehicle driving personnel can focus one's attention on road conditions forwardly, understand the road signs information in this section, to take corresponding measure.
The present invention's advantage is compared with prior art:
(1) provide humanized safety to assist:
Adopt the method for active collection electronic tag to obtain the method for road signs information, driver only need according to voice message and LCDs intuitively information feed back to take corresponding measure, and do not need left and right to look around, take sb's mind off sth.Meanwhile, got rid of surrounding vehicles the interference on pilot's line of vision has been produced to the hidden danger to the initiation traffic hazard in confused situation of the place ahead zebra stripes, allowed driver and pedestrian can have safer, an intelligent traffic environment.
(2) substitute the road traffic resources such as nameplate:
No. EPC of writing of electronic tag, by RFID reader, read, after single-chip microcomputer processing conversion, the information of demonstration and speech play comprises the road signs information of warning notice, prohibitory sign, Warning Mark, tourist district's sign, road construction safety notice and auxiliary sign etc.To a certain extent, make electronic tag replace the road traffic resources such as traffic signals, nameplate or sign, complicated and diversified traffic sign is integrated into a series of visual informations intuitively.
accompanying drawing explanation:
Fig. 1 is embodiment of the present invention structural principle schematic diagram.
Mark in figure: 1-RFID reader; 2-car-mounted display voice device; The external circular polarized antenna of 3-; 4-trackside electronic label device.
Fig. 2 is embodiment of the present invention RFID reader structural principle schematic diagram.
Mark in figure: 101-control module module; 102-radio-frequency module; 103-antennal interface; 104-power module one; 105-serial communication modular one.
Fig. 3 is embodiment of the present invention car-mounted display voice device principle schematic.
Mark in figure: 201-power module two; 202-single-chip microcomputer; 203-LCDs; 204-WAV voice playing module; 205-serial communication modular two.
Fig. 4 is the external circular polarized antenna position view of the embodiment of the present invention.
The external circular polarized antenna of mark in figure: 3-; 8-car right side rearview mirror.
Fig. 5 is the external circular polarized antenna communication scheme of the embodiment of the present invention.
The external circular polarized antenna of mark in figure: 3-; 4-trackside electronic label device; 5-automobile; 6-greenbelt.
Fig. 6 is vehicle-mounted each parts scheme of installation of the embodiment of the present invention.
Mark in figure: 1-RFID reader; 2-car-mounted display voice device; 203-LCDs; 204-WAV voice playing module; 7-vehicle steering.
Fig. 7 is embodiment of the present invention trackside electronic label device schematic diagram (being 1. side view, is 2. front view).
Mark in figure: 4-trackside electronic label device; 401-active electronic label; The movable groove of 402-; The circular locking window of 403-; 404-rectangular parallelepiped protection box; The greenbelt edge stone that 405-is special.
Fig. 8 is embodiment of the present invention trackside electronic label device position distribution schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment:
The invention provides a kind of traffic sign intelligent display voice system of the RFID of utilization technology, this system can be obtained the data of trackside electronic label device rapidly, by LCDs and WAV voice playing module, traffic sign is fed back to driver after treatment.
As shown in Figure 1, the identification of the zebra stripes based on RFID warning system comprises RFID reader 1, car-mounted display voice device 2, external circular polarized antenna 3 and trackside electronic label device 4; As shown in Figure 2, RFID reader 1 comprises control module module 101, radio-frequency module 102, antennal interface 103, power module 1 and serial communication modular 1; As shown in Fig. 3, car-mounted display voice device 2 comprises power module 2 201, single-chip microcomputer 202, LCDs (LCD) 203, WAV voice playing module 204 and serial communication modular 2 205.
External circular polarized antenna 3 shown in Fig. 4 adopts the circular polarisation directional antenna of gain 6dBi to reduce because environmental factor uncertainty on road is larger, and signal is propagated the error that is subject to the such environmental effects such as shadow fading, non-line-of-sight propagation and brings.It is installed on car right side door rearview mirror 8 belows, during installation and car door be 40 ° downward-sloping, point to walkway or greenbelt edge step.External circular polarized antenna 3 emitting electromagnetic waves that are mounted in automobile 5 shown in Fig. 5, initiatively gather and are installed on the signal that the trackside electronic label device 4 in greenbelt 6 sends.
In addition, in whole system about the installation of trackside electronic label device 4 as shown in Figure 7:
Trackside electronic label device 4 is arranged on special stone 405 inside, greenbelt edge, and this special greenbelt edge stone 405 is identical with general greenbelt edge stone outward appearance, and difference has been a circular locking window 403, for the protection of interior arrangement.Interior arrangement comprises an active electronic label 401, a movable groove 402 and a rectangular parallelepiped protection box 404.Rectangular parallelepiped protection box 404 materials are polycarbonate (PC) force-bearing plate, have not only prevented that outside seepage is to protect inner active electronic label 401 but also can block communication.Movable groove 402 materials are also PC force-bearing plate, for depositing active electronic label 401, open after window, can pull out and advance, and are convenient to change active electronic label 401.The whole structure that trackside electronic label device 4 is installed as shown in Figure 8.
Active electronic label 401 is the electronic tag of read-write supported protocol EPCC1-G2, and owing to himself there being energy to provide, oneself sends signal, so read distant and identification stability is also better.Such label has penetrability feature strong and that read without barrier, in the situation that being blocked or cover by object, can carry out penetrability communication.Its higher communication sensitivity has also adapted to the needs of the automobile reading tag that relative velocity is higher.Read-write its data that can repeatedly increase newly, revise, delete and store in label that make of active electronic label 401, facilitate the renewal of information.Its data content can, via cryptoguard, make its content be difficult for being forged and altering.The needs that write range data and its security to active electronic label have been adapted to.
Table 1:
| ? | The first word | The second word | The 3rd word | The 4th word | The 5th word | The 6th word |
| Warning notice (49 kinds) | 1001-1049 | ? | ? | ? | ? | ? |
| Prohibitory sign (43 kinds) | ? | 2001-2043 | ? | ? | ? | ? |
| Warning Mark (29 kinds) | ? | ? | 3001-3029 | ? | ? | ? |
| Tourist district's sign (17 kinds) | ? | ? | ? | 4001-4017 | ? | ? |
| Road construction safety notice (26 kinds) | ? | ? | ? | ? | 5001-5026 | ? |
| Auxiliary sign (16 kinds) | ? | ? | ? | ? | ? | 6001-6016 |
As shown in table 1, above-mentioned six class signs according to its segmentation kind number respectively from X001(X=1,2,3,4,5,6) open numbering.Definite < < road signs with reference to standard GB/T 5768-1999 and the graticule > > of segmentation sign kind quantity, segmentation sign kind quantity generally equates with the sign numbering upper limit.In particular cases, as the maximum speed limit in prohibitory sign, the speed that lifts restrictions, maximum height limit, Max. Clearance _M., restriction quality and axle load limited, the unfixed sign of this class content numerical value can expand numbering according to actual conditions.Here it is to be noted: the fingerpost in the < of GB5768-1999 < road signs and graticule > > differs and has sizable not stationarity because of region because of its content, be difficult to criteria classification, therefore foreclose.
With sexadecimal, write active electronic label No. EPC, form is sequentially write (note: the length of No. EPC is necessary for 4 multiple, 4 bit digital are 1 word) according to warning notice+prohibitory sign+Warning Mark+tourist district sign+road construction safety notice+auxiliary sign.In addition, this section is without certain class or a few class signs, and such indicates that corresponding word is 0000.In addition, what need to indicate is the traffic sign over 3 kinds that should not represent for No. EPC of an active electronic label, in order to avoid produce some information because single-point quantity of information is excessive, shows problem not in time.
As there is sign in certain section: watch for pedestrians (numbering: 1003), no overtaking (numbering: 2028), allow to turn around (numbering: 3029), the active electronic label 401 that this section arranges so is for No. EPC: 1003 ' 2028 ' 3029 ' 0000 ' 0000 ' 0000.When automobile passes through this, RFID reader 1 receives the signal from this active electronic label 401 by external circular polarized antenna 3, single-chip microcomputer 202 is processed No. EPC of receiving, and judges whether the 1st, the 5th, the 9th, the 13rd, the 17th, the 21st X of No. EPC equals 0.This X=1, reads the 2nd, 3,4, and what this three figure place was corresponding is the numbering 003 of warning notice; X=2, reads the 6th, 7,8, and what this three figure place was corresponding is the numbering 028 of prohibitory sign; X=3, reads the 10th, 11,12, and what this three figure place was corresponding is the numbering 029 of auxiliary sign.Finally, single-chip microcomputer 202 is by the pattern of coupling reference numeral, scene text explanation and speech data, and control car-mounted display voice device 2 and show pattern and the explanatory note watching for pedestrians, and voice reminder " the place ahead watches for pedestrians ", within 3 seconds, automatically switch to next sign later, show pattern and the explanatory note that no overtaking, and voice reminder " no overtaking ", within 3 seconds, automatically switch to next sign later, allow the pattern and the explanatory note that turn around, and voice reminder " junction ahead allows to turn around ".For another example certain section only has sign: forbid that vehicle is interim or park (2030) when long, the active electronic label 401 of this section setting is for No. EPC so: 0000 ' 2030 ' 0000 ' 0000 ' 0000 ' 0000, now show pattern and the explanatory note forbid that vehicle is interim or park when long, and voice reminder " is forbidden that all vehicles are interim or parks when long ".
Claims (1)
1. based on radio RF recognition technology, be a traffic sign intelligent display system of RFID, it is characterized in that the traffic sign intelligent display system based on RFID comprises RFID reader, car-mounted display voice device, external circular polarized antenna and trackside electronic label device;
RFID reader comprises control module module, radio-frequency module, antennal interface, power module one and serial communication modular one;
Car-mounted display voice device comprises that power module two, single-chip microcomputer, LCDs are that LCD, waveform phonetic matrix are WAV voice playing module and serial communication modular two;
Wherein, antennal interface is connected with external circular polarized antenna, and external circular polarized antenna is installed on car right side rearview mirror below, during installation and car door be 30 ° to 40 ° angles, direction is aimed at walkway or special greenbelt edge stone, thereby avoids the leak situation of reading tag to occur; Serial communication modular one is connected with the serial communication modular two of car-mounted display warning device, and control module module is connected with power module one, and radio-frequency module is connected with control module module respectively with serial communication modular one; LCDs is connected with single-chip microcomputer respectively with WAV voice playing module, and serial communication modular two is connected with the serial communication modular one of RFID reader, and single-chip microcomputer, LCDs are connected with power module two respectively;
Trackside electronic label device comprises source electronic tag, movable groove, circular locking window and rectangular parallelepiped protection box;
Operation to the traffic sign intelligent display voice system based on RFID is as follows:
(1) to write fixing product electronic code be EPC data to active electronic label, each EPC data corresponding specific road signs information; Active electronic label order is packed in corresponding trackside electronic label device; Trackside electronic label device is embedded in walkway or special stone inside, greenbelt edge, and walkway or special greenbelt edge stone have a circular locking window, for the protection of interior arrangement; Interior arrangement comprises an active electronic label, a movable groove and a rectangular parallelepiped protection box;
(2) open or close RFID reader power supply, to adjust the duty of RFID reader; RFID reader communicates with wireless mode and active electronic label by external circular polarized antenna, receives the radiofrequency signal of the active electronic label that also demodulation collects; The operation of active electronic label identification code and rdma read data is obtained in realization;
(3) open or close car-mounted display voice device power supply, to adjust the duty of car-mounted display voice device, control RFID reader simultaneously and start or stop to receive active electronic label data; By serial communication modular and RFID reader communication; The EEPROM storage data that single-chip microcomputer comprises comprise: sign numbering, pattern, scene text explanation and speech data;
After the data that single-chip microcomputer reads according to certain procedures processing RF ID reader, be transferred to LCDs and show, and control WAV voice playing module voice message road signs information;
The workflow of the traffic sign intelligent display voice system based on RFID is when running car is during near trackside electronic label device, RFID reader receives the signal from active electronic label by external circular polarized antenna, single-chip microcomputer is processed No. EPC of receiving, and judges whether the 1st, the 5th, the 9th, the 13rd, the 17th, the 21st X of No. EPC equals 0; If X=1, reads the 2nd, 3,4, what this three figure place was corresponding is the numbering of warning notice; If X=2, reads the 6th, 7,8, what this three figure place was corresponding is the numbering of prohibitory sign; By that analogy, if X=6 reads the 22nd, 23,24, what this three figure place was corresponding is the numbering of auxiliary sign;
Finally, the explanation of pattern, scene text and speech data that single-chip microcomputer will coupling reference numeral, and control car-mounted display voice device and show and speech play.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104485009A (en) * | 2014-12-05 | 2015-04-01 | 苏州沃斯麦机电科技有限公司 | Deceleration reminding method for automobile |
| CN106504550A (en) * | 2016-09-28 | 2017-03-15 | 深圳市元征科技股份有限公司 | A kind of roadside mark reminding method and device |
| CN106652524A (en) * | 2016-12-29 | 2017-05-10 | 广西财经学院 | Beidou navigation terminal device installed at outer portion of vehicle |
| CN107767682A (en) * | 2017-12-18 | 2018-03-06 | 河南应用技术职业学院 | A kind of guideboard automatic identifying method |
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| CN1655174A (en) * | 2005-03-04 | 2005-08-17 | 戴坚锋 | Road sign identification and playback system with radio frequency electronic labels |
| US20060155427A1 (en) * | 2003-02-27 | 2006-07-13 | Shaopeng Yang | Road traffic control method and traffic facilities |
| CN102867429A (en) * | 2012-09-13 | 2013-01-09 | 姬志刚 | Electronic indicating system for urban road traffic signs |
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| CN1337659A (en) * | 2000-08-16 | 2002-02-27 | 张镇贺 | Traffic marking and safety radio phonetic warning system |
| CN1312524A (en) * | 2001-02-27 | 2001-09-12 | 刘燕松 | Traffic sign signal emitting and receiving method and device |
| US20060155427A1 (en) * | 2003-02-27 | 2006-07-13 | Shaopeng Yang | Road traffic control method and traffic facilities |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104485009A (en) * | 2014-12-05 | 2015-04-01 | 苏州沃斯麦机电科技有限公司 | Deceleration reminding method for automobile |
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| CN106652524A (en) * | 2016-12-29 | 2017-05-10 | 广西财经学院 | Beidou navigation terminal device installed at outer portion of vehicle |
| CN107767682A (en) * | 2017-12-18 | 2018-03-06 | 河南应用技术职业学院 | A kind of guideboard automatic identifying method |
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Application publication date: 20140416 |