CN2404166Y - Infrared code transceiver - Google Patents
Infrared code transceiver Download PDFInfo
- Publication number
- CN2404166Y CN2404166Y CN 00202207 CN00202207U CN2404166Y CN 2404166 Y CN2404166 Y CN 2404166Y CN 00202207 CN00202207 CN 00202207 CN 00202207 U CN00202207 U CN 00202207U CN 2404166 Y CN2404166 Y CN 2404166Y
- Authority
- CN
- China
- Prior art keywords
- infrared
- amplifier
- input end
- detector
- comparer
- 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
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model relates to an infrared signal device which is provided with an infrared detector, a band pass amplifier, a comparator, a monolithic computer, a memory, an infrared emitter, a power supply and a switch. An infrared detection signal is compared with the setting electrical level through the comparator after the infrared detection signal is magnified, the output infrared detection signal is transmitted to the monolithic computer and coded information of the monolithic computer is transmitted to the memory and the infrared emitter. By using the infrared to transmit the information code, the utility model does not need to occupy radio frequency resources and is not affected by electromagnetic interference. The utility model has the advantages of good transmission directivity, far distance, high velocity, good security and reliability, simple structure, and low cost and power consumption, and the utility model can be used for management on distribution and transportation, automatic charge for highways, etc.
Description
The utility model relates to a kind of infrared signal device.
The various types of signal R-T unit is widely used in that logistics management, highway are charged automatically, transportation by railroad compartment computerized management, encased conveying management, computing machine ethernet communication etc.
CN 1059612A 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.
No. 4682170 patent disclosures of US 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.
CN 2077141U 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 automatic fare collection system of a kind of highway of CN 2138812Y patent disclosure 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.After automobile sailed the charge station launch site into, charge station sent signal, 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.
A kind of light-operated vehicle code transmitter of CN 2296041Y patent disclosure, it 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, power amplifier and frequency dividing circuit, is used for the charge of vehicle management point.
The purpose of this utility model is to provide a kind of infrared transmission message code that utilizes, need not take the radio frequency resource, be not subjected to electromagnetic interference (EMI), transmission directivity is good, long transmission distance, good confidentiality, the reliability height can be widely used in that logistics management, highway are charged automatically, the infrared code transceiver of transportation by railroad compartment computerized management, encased conveying management etc.
The utility model is provided with infrared detector, bandpass amplifier, comparer, single-chip microcomputer, storer, infrared transmitter, power supply and switch, and all circuit are set on printed circuit board (PCB) and the casing.The infrared detection signal output terminal tape splicing of infrared detector leads to amplifier input terminal, the frequency-selecting signal output part of bandpass amplifier and comparison signal are set the comparison signal input end that level output end connects comparer, the output terminal of comparer connects single-chip microcomputer, the signal code output termination storer and the infrared transmitter of single-chip microcomputer.Usually bandpass amplifier should comprise prime amplifier, frequency-selecting amplifier, wave detector and wave filter, the input end of the infrared detection signal output termination prime amplifier of infrared detector, the input end of prime amplifier output terminal selecting audio amplifier, frequency-selecting amplifier frequency-selecting signal output part connects the wave detector input end, the input end of the rectified signal output termination wave filter of wave detector, signal output part connects the comparison signal input end of comparer after the filtering of wave filter.Said storer is generally by being provided with in the single-chip microcomputer.
The utility model utilizes the infrared transmission message code, need not take the radio frequency resource, is not subjected to electromagnetic interference (EMI), transmission directivity and good confidentiality, long transmission distance.Secondly, adopt single-chip microcomputer software and hardware combining and peripheral hardware to cooperate, antijamming capability is strong, the reliability height.In addition, adopt the multiple coded message of single-chip microcomputer modulation and demodulation easily, transfer rate height, reliability height.Simultaneously, apparatus structure is simple, only needs 2 integrated circuit (IC) chip and some auxiliary elements, and infrared detector and transmitter can adopt inexpensive infrared photodiode and infrared transmitting tube respectively, and power consumption and cost of manufacture are low.
Fig. 1 is that circuit of the present utility model is formed block scheme.
Fig. 2 is circuit theory diagrams of the present utility model.
Fig. 3 is a principle of work process flow diagram of the present utility model.
As shown in Figure 1, circuit of the present utility model is provided with infrared photodiode 1, bandpass amplifier 2, comparer 3, single-chip microcomputer 4, storer 5, infrared transmitting tube 6, the input end of the logical amplifier 2 of the infrared detection signal output terminal tape splicing of infrared photodiode 1, the frequency-selecting signal output part of bandpass amplifier connects the negative input end of comparer 3, signal output part relatively connects single-chip microcomputer 4, the signal code output termination storer 5 and the infrared transmitting tube 6 of single-chip microcomputer.As shown in Figure 2, infrared photodiode 1 adopts D
1(HPD712), under the situation of no signal, single-chip microcomputer IC
2(AT tiny 12L) is in out-of-work power-down mode, keeps very little electric current (＜1 μ A), has only operational amplifier A
1～A
4(by 1 integrated circuit (IC)
1Max4.9 bears) in work, its electric current is also very little, so power consumption is little.Work as D
1When receiving the predetermined pulse frequency and having the infrared signal of this transceiver feature code, through capacitor C
1Be coupled to prime amplifier A
1Positive input terminal, through A
1Signal after the amplification send by amplifier A
2, A
3And the frequency-selecting amplifier formed of peripheral cell carries out frequency-selecting and amplifies, and the output signal after frequency-selecting is amplified is through detector diode D
2(IN4148) detection and by capacitor C
6, resistance R
14Send amplifier A behind the filter filtering of forming
4Negative input end, the level of setting input A
4Positive input terminal.At A
4And the comparer formed of peripheral auxiliary element relatively after, if signal level is higher than the level of setting, then A
4Output low level is through R
20, C
9Send single-chip microcomputer IC
21 pin, single-chip microcomputer is resetted, after single-chip microcomputer resets, promptly be waken up.
Single-chip microcomputer is started working, and single-chip microcomputer passes through IC earlier
2Pin 7 send low level, with comparer A
4The level of negative input end drag down, make A
4Output remain on high level, single-chip microcomputer IC
21 pin also keep high level, to guarantee the single-chip microcomputer operate as normal.When receiving assigned frequency, when this device characteristic code and password were arranged, the infrared signal of information code was through A
1Amplify and A
2, A
3Send single-chip microcomputer IC after the logical amplification of band
2, solve its signal code, and proofread this device characteristic code and password, if all correct, then deposit information code in IC
2In the storer established, then with this device characteristic code, password, information code and this device number, by single-chip microcomputer IC
25 pin, promote infrared transmitting tube D
3(HIR305C2) emission, single-chip microcomputer IC
2After each output terminal put high-impedance state, enter power-down mode again, wait for next wake-up signal, referring to Fig. 3.Infrared photodiode, infrared transmitting tube and switch can be located on the casing.
Claims (4)
1. the infrared code transceiver is characterized in that being provided with infrared detector, bandpass amplifier, comparer, single-chip microcomputer, storer, infrared transmitter, power supply and switch, and all circuit are set on printed circuit board (PCB) and the casing; The infrared detection signal output terminal tape splicing of infrared detector leads to amp.in, the frequency-selecting signal output part of bandpass amplifier and comparison signal are set the comparison signal input end that level output end connects comparer, the output terminal of comparer connects single-chip microcomputer, the signal code output termination storer and the infrared transmitter of single-chip microcomputer.
2. infrared code transceiver as claimed in claim 1, it is characterized in that said bandpass amplifier is made up of prime amplifier, frequency-selecting amplifier, wave detector and wave filter, the input end of the output termination prime amplifier of infrared detector, the input end of the output terminal selecting audio amplifier of prime amplifier, the input end of the output termination wave detector of frequency-selecting amplifier, the input end of the rectified signal output termination wave filter of wave detector, the comparison signal input end of the filtering signal output termination comparer of wave filter.
3. infrared code transceiver as claimed in claim 1 is characterized in that said infrared detector adopts infrared photodiode, and infrared transmitter adopts infrared transmitting tube.
4. as claim 1 and 2 described infrared code transceivers, it is characterized in that comparer is made up of operational amplifier, the negative input end of the output termination operational amplifier of wave filter is set the positive input terminal that level connects operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00202207 CN2404166Y (en) | 2000-01-11 | 2000-01-11 | Infrared code transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00202207 CN2404166Y (en) | 2000-01-11 | 2000-01-11 | Infrared code transceiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2404166Y true CN2404166Y (en) | 2000-11-01 |
Family
ID=33571257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00202207 Expired - Fee Related CN2404166Y (en) | 2000-01-11 | 2000-01-11 | Infrared code transceiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2404166Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097696A (en) * | 2016-07-08 | 2016-11-09 | 深圳市博巨兴实业发展有限公司 | A kind of infrared signal testing circuit |
-
2000
- 2000-01-11 CN CN 00202207 patent/CN2404166Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097696A (en) * | 2016-07-08 | 2016-11-09 | 深圳市博巨兴实业发展有限公司 | A kind of infrared signal testing circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100578548C (en) | Roadside parking charging system and method | |
| US6198913B1 (en) | Automatic wake-up device for radio automatic recognition terminal and communication method using the terminal | |
| CN102157019B (en) | Communication method for on board unit and road side unit of ETC system | |
| CN102082587B (en) | Data communication method and system of vehicle-mounted unit | |
| WO2011130935A1 (en) | Electronic toll collection electronic label device and method for implementing reporting route information | |
| CN103729895A (en) | Method, device and system for awakening electronic tag | |
| CN102968824A (en) | Vehicle management system based on optical communication | |
| CN104217463A (en) | Intelligent transportation system, intelligent transportation equipment and operation method | |
| CN207008867U (en) | Roadside equipment based on ground magnetism awakens radar range finding technique up | |
| CN108171859A (en) | A kind of channel door system based on passive RFID technology | |
| CN2549541Y (en) | Electronic running vehicle tolling device with two electronic labels plus CPU card with double inter faces | |
| CN104217229A (en) | High arousal sensitivity card, OBU, OBU component and communication method | |
| CN101494523A (en) | Channel self-adapting method, device and system | |
| CN111667690A (en) | Internet of Things electronic license plate device and implementation method based on active RFID | |
| CN2404166Y (en) | Infrared code transceiver | |
| CN111553991A (en) | Parking information acquisition charging system based on Bluetooth ETC and OBU and parking information acquisition charging method thereof | |
| CN208298266U (en) | A kind of channel door system based on passive RFID technology | |
| JPH08167014A (en) | Radio ic card, charge reception system using the ic card and power supply control method of radio ic card | |
| CN111222602A (en) | Method and system for carrying out secure communication with vehicle-mounted unit | |
| KR20020046223A (en) | Toll collection apparatus using dedicated short range communication | |
| CN213958064U (en) | Supplementary transaction device for improving ETC transaction success rate | |
| CN109841065A (en) | City curb parking identifying system and method based on intelligent recognition | |
| CN211827586U (en) | Device with vehicle detection and radio frequency card reading functions and parking space monitoring system | |
| CN201638273U (en) | Electronic toll collection handholding device | |
| CN2296041Y (en) | Emitter for optically controlled badging of vehicle |
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 |