CN2296041Y

CN2296041Y - Emitter for optically controlled badging of vehicle

Info

Publication number: CN2296041Y
Application number: CN 97213388
Authority: CN
Inventors: 陈秉焕
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-29
Filing date: 1997-04-29
Publication date: 1998-10-28
Anticipated expiration: 2007-04-29

Abstract

The utility model discloses an emitter for optically controlled badging of vehicles, which is used for collecting fares, or tolls, or ingress fees by management sites. The utility model is characterized in that an infrared light-receiving module is connected to a monolithic computer after the infrared light-receiving module converts an optical signal to an electric signal; a phase discrimination circuit is connected with the data signal output terminal of the monolithic computer, and the locking signal output terminal of the phase discrimination circuit is connected with the locking signal input terminal of the monolithic computer; in addition, an oscillation frequency control signal passing through a loop filter is transmitted to a voltage-controlled oscillator; the output signal of the voltage-controlled oscillator is transmitted to a power amplification circuit and a phase-locked loop circuit after amplified; the modulation signal input terminal of the voltage-controlled oscillator is connected to the signal code output terminal of the monolithic computer. The utility model adopting infrared light carrier wave has the advantages of good directional property, far transmission distance, stable frequency, and good reliability.

Description

Light-operated vehicle code transmitter

The utility model relates to a kind of being used at management point return the vehicle to the garage and knock off expense, toll or enter the device of expense.

For the toll of pickup vehicle or enter expense, must set up the toll administration point in highway, tunnel, bridge and parking lot etc.If adopt manual toll collection, then often cause the vehicle retardance, drawbacks such as waste labour and cash management leak.And automatic accounting device or system can effectively address the above problem.

The CN1059612A patented claim discloses a kind of automatic charging system for expressway, mainly comprises infrared detecting device, FEP, video camera, image-processing system and main frame.

The US4682170 patent disclosure a kind of charging device that is used for highway and parking lot, it was charged by judgement and access time to vehicle, but require to enter charge station by a car at every turn, next car must wait for after last car left charge station and just can enter that its efficient is not high.

The CN2077141U patented claim discloses a kind of vehicle charging device of keeping accounts automatically, and it is by the code transmitter that is contained on the vehicle, compositions such as the record keeping of cash desk charge processor.When vehicle passed through, the binary signal that is sent a string Ben Che of representative code by vehicle entered computing machine, by the vehicle identification record of computing machine to passing through, charged as certificate.

The applicant discloses a kind of automatic toll system for vehicles passing through road and bridge in the CN1109988A patented claim, it comprises 4 subsystems such as handing over money, charge, track monitoring and vehicle.

The CN1078322A patented claim discloses a kind of high way multi-channel automatic charge system, and it is by infrared detecting device, and FEP subsystem and host subsystem are formed.The FEP subsystem comprises a FEP and peripheral hardware thereof: external display, speech player and electronic responder etc.Host subsystem comprises the main frame of two Hot Spares, a pair of modulator-demodular unit and a communication processor.Main frame links by communication processor and the FEP that is arranged on each charge station, and each FEP receives the model data of corresponding infrared detecting device output, and handle, vehicle judges.

The CN2138812Y patent disclosure automatic fare collection system of a kind of highway and bridge, it adorns a transponder on automobile, store information such as license number, vehicle, color, affiliated unit, account No. on it, and dual-mode antenna is housed.Be provided with microwave signal generator, duplexer, dual-mode antenna, receiver, controller, data processor, printer etc. in charge station.Charge station sends signal after automobile sails the charge station launch site into, and transponder is answered, and microcomputer is handled the signal of regaining, and promptly realizes automatic charging, charges to the car owner to certain hour.

The purpose of this utility model aims to provide a kind of light-operated vehicle code transmitter that can obtain the testing vehicle register code fast, efficiently and accurately that is used for the vehicle automatic accounting device, and can dynamically supervise and check it.

The utility model comprises that infrared ray is subjected to optical module, single-chip microcomputer and peripheral circuit thereof, phase discriminator, loop filter, voltage controlled oscillator, amplifying circuit and power amplification circuit and frequency dividing circuit.Infrared ray is subjected to the electrical signal of optical module to connect the signal code input end of single-chip microcomputer, preposition frequency dividing circuit in its peripheral circuit of I/O termination of single-chip microcomputer outputting data signals, the reference frequency quartz crystal oscillator output terminal of the input termination phase discriminator of preposition frequency dividing circuit, the input end of the output termination phase discriminator of preposition frequency dividing circuit.The input end of the output terminal T-Ring path filter of phase discriminator, the locking signal output terminal of phase discriminator connects the I/O port of single-chip microcomputer.The promotion voltage signal input end of the output termination voltage controlled oscillator of loop filter, the modulation signal input end of voltage controlled oscillator connects the signal code output terminal of single-chip microcomputer, the input end of the output termination amplifying circuit of voltage controlled oscillator, amplification circuit output end one tunnel connects frequency dividing circuit, another road of amplification circuit output end connects the input end of power amplification circuit, another phase demodulation input end of the output termination phase discriminator of frequency dividing circuit.The power control terminal of power amplification circuit connects the switching signal output terminal of single-chip microcomputer.

Principle of work of the present utility model and process are, promptly to convert electric signal to and give single-chip microcomputer when being subjected to light signal that optical module receives assigned frequency when infrared.Single-chip microcomputer determines whether feature code up to specification earlier according to its signal, if not, then invalid; If, send data-signal to remove phase discriminator then according to signal code.The signal of phase discriminator output is through loop filter filtering, promote voltage controlled oscillator again and produce vibration, and amplify through amplifying circuit, send frequency dividing circuit, the phase-locked loop frequency combiner circuit of being made up of phase discriminator, loop filter, voltage controlled oscillator is locked in voltage controlled oscillator on certain centre frequency.When frequency stabilization promptly lock finish after, phase discriminator is given signal of single-chip microcomputer, and single-chip microcomputer will use vehicle code of the present utility model to deliver to voltage controlled oscillator to modulate, and opens power amplification circuit simultaneously.The modulation signal of voltage controlled oscillator is the antennas emission after amplification, filtering.

Characteristics of the present utility model are that control signal adopts the infrared light carrier wave, good directionality, and propagation distance is far away; Adopt crystal oscillation phase-locked loop frequency combiner circuit, frequency stability is good, and wide frequency range can be adjusted transmission frequency by infrared light according to the radio frequency resource of various places; Radio signal adopts frequency modulation emission, reliability height.Like this, can obtain the identity code of vehicle by the road and bridge automatic toll device fast, efficiently and accurately, to realize automatic charge.

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Following examples will be further described the utility model in conjunction with the accompanying drawings.

As shown in Figure 1, the utility model comprises that infrared ray is subjected to preposition frequency dividing circuit (21), phase discriminator (3), loop filter (4), voltage controlled oscillator (5), amplifying circuit (6), power amplification circuit (7), frequency dividing circuit (8) in optical module (1), single-chip microcomputer (2) and the peripheral circuit thereof etc.Infrared ray is subjected to optical module (1) to convert the light signal of the assigned frequency that receives to electric signal and delivers to single-chip microcomputer (2), single-chip microcomputer (2) outputting data signals is connected to preposition frequency dividing circuit (21), the pulse square wave signal of phase discriminator (3) output is delivered to voltage controlled oscillator (5) and is promoted voltage controlled oscillator (5) generation vibration after loop filter (4) filtering, and after amplifying circuit (6) amplifies, send frequency dividing circuit (8), the output of frequency dividing circuit connects

Table 1

R ₁ 1k R ₂ 51k R ₃ 100Ω R ₄ 33k R ₅ 2.2k R ₆ 1k R ₇ 470Ω R ₈ 5.6k R ₉ 15k R ₁₀ 15k R ₁₁ 1.5k R ₁₂ 51k R ₁₃ 56k R ₁₄ 56k R ₁₅ 33k R ₁₆ 100Ω R ₁₇ 15k R ₁₈ 33Ω R ₁₉ 15k R ₂₀ 10Ω R ₂₁ 4.7k R ₂₂ 2.2k R ₂₃ 2.2k R ₂₄ 100Ω R ₂₅ 1.2k R ₂₆ 100Ω R ₂₇ 33k R ₂₈ 100k R ₂₉ 10k R ₃₀ 10k

?C ₁ 1000p ?C ₂ 4.7μ C ₃ 1000p ?C ₄ 3300p ?C ₅ 15p ?C ₆ 10p ?C ₇ 1p ?C ₈ 1000p ?C ₉ 100p ?C ₁₀ 1000p ?C ₁₁ 100p ?C ₁₂ 10p ?C ₁₃ 10p ?C ₁₄ 10p ?C ₁₅ 10p ?C ₁₆ 1000p ?C ₁₇ 10p ?C ₁₈ 10p ?C ₁₉ 56p ?C ₂₀ 56p ?C ₂₁ 56p ?C ₂₂ 2.2μ C ₂₃ 4.7μ C ₂₄ 0.047μ C ₂₅ 12p ?C ₂₆ 12p ?C ₂₇ 1000p ?C ₂₈ 0.01μ C ₂₉ 1000p ?C ₃₀ 12p ?C ₃₁ 12p

?IC ₁ MB1504 ?IC ₂ Z86E04 ?IC ₃ NJL51V568 ?BG ₁ 2SC1907 ?BG ₂ 2SC1907 ?BG ₃ 2SC1907 ?BG ₄ 2SC1907 ?BG ₅ CS9012 ?BG ₆ CS9012 ?D ₁ MA363 ?D ₂ MA363 ?D ₃ 1N4148 ?D ₄ 1N4148 ?J ₁ 12M ?J ₂ 8M ?L ₁ 3μH ?L ₂ 30μH ?L ₃ 3μH

Phase discriminator (3).In addition, also deliver to power amplification circuit (7).Phase discriminator (3) also export a locking signal through shaping circuit to single-chip microcomputer (2).Single-chip microcomputer (2) output signal code is also exported the power control terminal of a switching signal to power amplification circuit (7) through the modulation of voltage controlled oscillator (5) frequency modulation.

Referring to Fig. 2 and table 1, infrared ray is subjected to optical module IC ₃(NJL51V568) electric signal is delivered to single-chip microcomputer IC by the 1st pin ₂(Z86E04) the 9th pin (is seen phase-locked loop intergrated circuit IC by the 12nd pin outputting data signals to preposition frequency dividing circuit ₁(MB1504)) the 10th pin.Resistance R ₂₁～R ₂₅, diode D ₃, D ₄And capacitor C ₂₂～C ₂₄Deng the makeup ring path filter.Quartz crystal J ₁And capacitor C ₂₅, C ₂₆Form the reference frequency of phase discriminator.Phase discriminator is by IC ₁The 5th pin output signal through loop filter filtering pusher dynamic pressure controlled oscillator (by triode BG ₁, varactor D ₁, D ₂And inductance L ₁Deng composition), the output of voltage controlled oscillator is through C ₁₂Be coupled to by triode BG ₂, BG ₃And the amplifying circuit of auxiliary element composition.Amplifying circuit is by BG ₃Collector output, the one tunnel through capacitor C ₁₆Deliver to IC ₁Frequency dividing circuit, another road is through capacitor C ₁₇Be coupled to power amplification circuit (by triode BG ₄, inductance L ₂, resistance R ₁₀, R ₁₇, R ₂₀Deng composition).Whole phase-locked loop frequency combiner circuit (being made up of phase discriminator, loop filter, voltage controlled oscillator etc.) is locked in voltage controlled oscillator on certain centre frequency, after the frequency stabilization, and IC ₁The 7th pin sine wave output locking signal through resistance R ₂₇, triode BG ₅Deng delivering to IC behind the shaping circuit ₂The 3rd pin, when phaselocked loop is locked, output high level; Otherwise, output low level.IC ₂The 16th pin give this car code (binary pulse signal) through resistance R ₁₄To voltage controlled oscillator modulation, IC simultaneously ₂The 15th pin output positive level signal is opened the triode BG of electronic switching circuit ₆, for power amplification circuit provides+the 9V power supply, by BG ₄Amplifying signal is through C ₁₉, C ₂₀, L ₃Antennas emission after the filtering.

Shown in the model of used components and parts and parameter see Table.

Claims

1. light-operated vehicle code transmitter, it is characterized in that comprising that infrared ray is subjected to optical module, single-chip microcomputer and peripheral circuit thereof, phase discriminator, loop filter, voltage controlled oscillator, amplifying circuit and power amplification circuit and frequency dividing circuit, infrared ray is subjected to the electrical signal of optical module to connect the signal code input end of single-chip microcomputer; Preposition frequency dividing circuit in its peripheral circuit of I/O termination of single-chip microcomputer outputting data signals, the reference frequency quartz crystal oscillator output terminal of the input termination phase discriminator of preposition frequency dividing circuit, the input end of the output termination phase discriminator of preposition frequency dividing circuit; The input end of the output terminal T-Ring path filter of phase discriminator, the locking signal output terminal of phase discriminator connects the I/O port of single-chip microcomputer; The promotion voltage signal input end of the output termination voltage controlled oscillator of loop filter, the modulation signal input end of voltage controlled oscillator connects the signal code output terminal of single-chip microcomputer, the input end of the output termination amplifying circuit of voltage controlled oscillator; Amplification circuit output end one tunnel connects frequency dividing circuit, and another road of amplification circuit output end connects the input end of power amplification circuit, another phase demodulation input end of the output termination phase discriminator of frequency dividing circuit; The power control terminal of power amplification circuit connects the switching signal output terminal of single-chip microcomputer.