CN2176571Y - Electronic vehicle number plate - Google Patents
Electronic vehicle number plate Download PDFInfo
- Publication number
- CN2176571Y CN2176571Y CN 93244305 CN93244305U CN2176571Y CN 2176571 Y CN2176571 Y CN 2176571Y CN 93244305 CN93244305 CN 93244305 CN 93244305 U CN93244305 U CN 93244305U CN 2176571 Y CN2176571 Y CN 2176571Y
- Authority
- CN
- China
- Prior art keywords
- vehicle number
- license number
- receiver
- vehicle
- storbing gate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Traffic Control Systems (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Abstract
The utility model relates to an electronic vehicle number plate which is designed for the automatic recognition of the information, such as the vehicle number, the vehicle model, etc., and the realization of the purpose of automatic traffic control. The electronic vehicle number plate is composed of a vehicle number emitter installed on motor vehicles, and a vehicle number receiver installed on passing road junctions of the motor vehicles, wherein, the vehicle number emitter comprises an encoder, an amplifier, a modulator and an emitter, the vehicle number receiver comprises a receiver, a demodulator and a decoder, the modulator of the vehicle number emitter is composed of an inverter, a first and a second oscillators and a first and a second gated doors, the modulator works in a keying frequency-shift mode, and both the encoder and the decoder adopt chip microprocessors. After matched with computers, the vehicle number receiver can carry out wide range traffic control.
Description
The utility model relates to a kind of motor vehicle and discerns newspaper number device automatically, relates to a kind of electronic license plate or rather.
In the automatic traffic management field, a kind of counting assembly that is installed in the road junction is arranged, can count the vehicle that passes through, statistical vehicle flowrate, control traffic lights etc. after the machine operational analysis as calculated again, these devices are owing to can only calculate the vehicle flowrate at certain road junction, can not discern vehicle, license number etc., just very limited in the effect of traffic administration.
When vehicle passed through the porch in highway, bridge, tunnel, the paying of generally will stopping influenced work efficiency, and changing the key problem in technology of paying that stops is to the quick identification by vehicle characteristics.The recognition technology that has adopted at present has: utilize video camera identification license number, video camera is taken in license plate number and is done image processing and trade mark identification in the machine, this recognition technology recognition speed is slow, cost is high, handles quality and is subjected to the influence of car plate cleanliness and light, environment bigger, therefore implements difficulty.
The purpose of this utility model is a kind of electronic license plate of design, can discern vehicle by vehicle, license number etc. automatically, is convenient to computing machine and unifies record, management, charge etc.
Electronic license plate of the present utility model, form with the license number receiver that is installed in the autos only road junction by the license number transmitter that is installed on the motor vehicle, described license number transmitter comprises the license number scrambler, the coded signal amplifier, coded signal modulator and by exciting circuit, radiating circuit, the transmitter that emitting antenna is formed, described license number receiver is by receiver, detuner and demoder are formed, it is characterized in that: described modulator is by phase inverter, the 1st, the 2nd high frequency oscillator and the 1st, the 2nd storbing gate is formed, described coded signal amplifier output connects the gating input end of phase inverter input and the 1st storbing gate respectively, described phase inverter output connects the gating input end of the 2nd storbing gate, described the 1st high frequency oscillator output connects the input end of the 1st storbing gate, described the 2nd high frequency oscillator output connects the input end of the 2nd storbing gate, the described the 1st, the output of the 2nd storbing gate also is connected to described exciting circuit input end.
Modulator is worked in keying frequency displacement mode, the license number scrambler is encoded to the relevant sign of vehicle, license number and vehicle, launch by transmitter after modulators modulate with serial signal, the license number receiver receives the flag code high-frequency modulation signal of the representative vehicle characteristics that the motor vehicle license number transmitter by the road junction sends, after the detuner demodulation, be reduced to license number, vehicle etc., discern, keep accounts, store or other processing by decoder decode.The substation computing machine that motor vehicle is carried out automatic management can be set at the road junction, a substation computing machine can receive the car plate signal of a plurality of vehicle pass-through mouth license number receivers, carry out that timing, record, calculating, statistics, demonstration, printing and serial signal output are handled etc., can inquire about or import the master station computing machine on the spot for the automatic management on a large scale for the relevant personnel, also can be connected by parallel interface and all the other charging devices etc.
Describe technology of the present utility model in detail below in conjunction with the embodiment accompanying drawing.
Fig. 1 is an electronic license plate license number transmitter theory diagram.
Fig. 2 is that electronic license plate license number transmitter shown in Figure 1 is implemented electrical schematic diagram.
Fig. 3 is an electronic license plate license number receiver theory diagram.
Fig. 4 is that electronic license plate license number receiver shown in Figure 3 is implemented electrical schematic diagram.
Referring to Fig. 1, electronic license plate license number transmitter is made up of microcomputer coding device 101, coded signal amplifier 102, phase inverter the 103, the 1st oscillator the 104, the 1st storbing gate the 105, the 2nd oscillator the 106, the 2nd storbing gate 107, exciting circuit 108, power amplifier 109 and emitting antenna 110.
By the 1 oscillator output signal f1 that exports through anti-phase license number coded signal gating and by 2 oscillator output signal f2 without anti-phase license number coded signal gating output, realize the signal modulation with the work of keying frequency displacement mode, through exciting circuit 108, power amplifier 109, by antenna 110 emissions.
Referring to Fig. 2, microcomputer coding device 101 is made of chip microprocessor MCS8751, be solidified with corresponding software in the chip, transistor BG5, BG6 and peripheral resistance capacitance thereof are formed coded signal amplifier 102, transistor BG7, BG8 and peripheral cell thereof constitute phase inverter 103, transistor BG1 and crystal resonator JA12B constitute the 1st oscillator 104, transistor BG2 and crystal resonator JA12B constitute the 2nd oscillator 106, diode D1, D2 forms the 1st storbing gate 105, diode D3, D4 forms the 2nd storbing gate 107, transistor BG3 and peripheral cell thereof constitute exciting circuit 108, and transistor BG4 and peripheral cell thereof constitute power amplifier 109, emitting antenna TX1.
8751 single-chip microcomputers and corresponding program are encoded to vehicle characteristic indication information such as vehicle, license plate numbers, coded signal is exported in the ASCII character mode by serial port of single chip computer, the embodiment baud rate is 1200-9600bit, coded signal send BG5, BG6 to amplify, the 1st oscillator BG1, JA12B produce high-frequency signal f1, embodiment gets 28.000MHZ, and the 2nd oscillator BG2, JA12B produce high-frequency signal f2, and embodiment gets 27.990MHZ.Coded signal through phase inverter BG7, the anti-phase output of BG8 adds to the 1st storbing gate D1, D2 through L6, gating output f1.Add to storbing gate D3, D4 without anti-phase coding amplifying signal through R8, L9, gating output f2, f1, f2 converge through drive(r) stage and power amplifier level by antenna TX1 emission in the BG3 base stage, thereby realize finishing high frequency modulated emission to the license number signal in keying frequency displacement mode.
Referring to Fig. 3, the license number receiver comprises receiving antenna 201, High Amplifier Circuit 202, the intermediate-frequency circuit of forming by local oscillation circuit 2031 and mixting circuit 2,032 203, the 1st intermediate level circuit 204, put and amplitude limiter circuit 206, frequency-discriminating circuit 207, amplification and rectification circuit 208 and microcomputer demoder 209 in the 2nd intermediate level circuit 205, the 3.
Receiving antenna 201 receives the high-frequency coding modulation signal that is sent by the license number transmitter, enter mixer stage 203 through one of high-frequency amplifier stages 202 and produce intermediate-freuqncy signal, this signal is through the 1st, put 204 in the 2nd two-stage, after 205, enter again and put 206 and amplitude limit in the 3rd level, constant amplitude intermediate-freuqncy signal behind the amplitude limit enters microcomputer demoder 209 through frequency discrimination 207 and amplification shaping 208 again, recover the vehicle number information of former transmitter etc. through 209 decodings of microcomputer demoder, this vehicle number information also can be transported to substation microcomputer 300 in the serial code mode through the serial delivery outlet TXD of microcomputer demoder 209, finishes the reception work of license number.
Referring to Fig. 4, receiving antenna TX2, transistor BG1 and peripheral cell thereof constitute High Amplifier Circuit 202, and transistor BG2 and peripheral cell thereof constitute local oscillator level 2031, and transistor BG3 and peripheral cell thereof constitute mixting circuit 2032, the output intermediate-freuqncy signal.Transistor BG4, BG5, BG6 and peripheral cell thereof constitute the 1st, the 2nd, the 3rd intermediate level circuit 204,205,206 respectively, transistor BG7, BG8, BG9 constitute frequency discrimination, amplification, shaping circuit 207,208, chip microprocessor MCS8751 constitutes microcomputer demoder 209, is solidified with corresponding decoding software in the chip.
Electronic license plate of the present utility model, by the automatic identification that license number transmitter and license number receiver carry out vehicle mark is set respectively, help the robotization of traffic administration, can improve vehicle control and treatment speed and control of quality, by means of electronic license plate of the present utility model, can monitor the magnitude of traffic flow at road junction, record; By memory passing through the time etc. through the road junction vehicle, can help traffic administration man analysis traffic hazard, be installed in the electronic license plate license number receiver of bridge, expressway access and parking lot, pass bayonet socket, can help also to realize that nobody valuates automatically, charges, checks out etc.
Claims (3)
1, a kind of electronic license plate, form with the license number receiver that is installed in the autos only road junction by the license number transmitter that is installed on the motor vehicle, described license number transmitter comprises the license number scrambler, the coded signal amplifier, coded signal modulator and by exciting circuit, radiating circuit, the transmitter that emitting antenna is formed, described license number receiver is by receiver, detuner and demoder are formed, it is characterized in that: described modulator is by phase inverter, the 1st, the 2nd high frequency oscillator and the 1st, the 2nd storbing gate is formed, described coded signal amplifier output connects the gating input end of phase inverter input and the 2nd storbing gate respectively, described phase inverter output connects the gating input end of the 1st storbing gate, described the 1st high frequency oscillator output connects the input end of the 1st storbing gate, described the 2nd high frequency oscillator output connects the input end of the 2nd storbing gate, the described the 1st, the output of the 2nd storbing gate also is connected to described exciting circuit input end.
2, electronic license plate according to claim 1 is characterized in that described license number scrambler is a chip microprocessor.
3, electronic license plate according to claim 1 is characterized in that described demoder is a chip microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244305 CN2176571Y (en) | 1993-11-13 | 1993-11-13 | Electronic vehicle number plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244305 CN2176571Y (en) | 1993-11-13 | 1993-11-13 | Electronic vehicle number plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2176571Y true CN2176571Y (en) | 1994-09-07 |
Family
ID=33817546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93244305 Expired - Fee Related CN2176571Y (en) | 1993-11-13 | 1993-11-13 | Electronic vehicle number plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2176571Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658799A (en) * | 2012-04-16 | 2012-09-12 | 徐晓涛 | Intelligent electronic license plate and remote positioning identification management system thereof |
| CN107993448A (en) * | 2017-12-28 | 2018-05-04 | 北京悦畅科技有限公司 | A kind of electronic license plate managing device and system |
-
1993
- 1993-11-13 CN CN 93244305 patent/CN2176571Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658799A (en) * | 2012-04-16 | 2012-09-12 | 徐晓涛 | Intelligent electronic license plate and remote positioning identification management system thereof |
| CN107993448A (en) * | 2017-12-28 | 2018-05-04 | 北京悦畅科技有限公司 | A kind of electronic license plate managing device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |