CN102289941A - Traffic signal lamp system controlled by power line carriers - Google Patents
Traffic signal lamp system controlled by power line carriers Download PDFInfo
- Publication number
- CN102289941A CN102289941A CN2011101676855A CN201110167685A CN102289941A CN 102289941 A CN102289941 A CN 102289941A CN 2011101676855 A CN2011101676855 A CN 2011101676855A CN 201110167685 A CN201110167685 A CN 201110167685A CN 102289941 A CN102289941 A CN 102289941A
- Authority
- CN
- China
- Prior art keywords
- carrier communication
- carrier
- circuit
- signal lamp
- main frame
- 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.)
- Pending
Links
Images
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention relates to a traffic signal lamp system controlled by power line carriers. The traffic signal lamp system controlled by the power line carriers comprises a traffic signal machine, a carrier communication host, a carrier communication subordinate computer and a signal lamp, wherein the traffic signal machine is connected with the carrier communication host; the carrier communication host controls the signal lamp through the carrier communication subordinate computer; the carrier communication host and the carrier communication subordinate computer have the same circuit structure; and the carrier communication host receives data transmitted by a serial port of an upper computer and transmits the data to the carrier communication subordinate computer through power line carrier communication. The traffic signal lamp system can perform regulation and control according to actual conditions of a road to overcome the defects of the conventional traffic signal lamp system, and is easy and convenient to operate and can be controlled flexibly; the reliability of the traffic signal lamp system is improved; the maintenance of equipment is reduced; and the traffic signal lamp system is a technical innovation.
Description
Technical field
The present invention relates to the carrier communication field, particularly a kind of traffic signal lamp system of power line carrier control.
Background technology
At present, along with automobile enters the quickening of family's paces and increasing of city automobile quantity, the urban highway traffic problem seems more and more important.Resolve crossroad access signal lamp control problem and be ensure traffic safety, the in order and quick important step of operation.But existing crossroad access signal lamp control system mostly adopts relay or common single chip machine controlling circuit to realize, and all be single sequential control, can not regulate control according to the road surface actual conditions, exist that function is few, shortcoming such as poor reliability and maintenance are big.In order to remedy the various shortcoming that existing traffic light control system exists, need on control mode, adopt new thinking in the technical innovation to some extent of traffic light control system.
Summary of the invention
For overcoming the deficiencies in the prior art, the problem at existing traffic light control system exists provides a kind of based on power line carrier traffic light control system technical scheme to purpose of the present invention exactly.Make traffic light control system regulate control, not only require easy and simple to handle, control flexibly, require to improve system reliability simultaneously, reduce the plant maintenance amount according to the road surface actual conditions.
The present invention realizes by such technical scheme: the traffic signal lamp system of power line carrier control, it is characterized in that system comprises traffic signaling equipment, carrier communication main frame, carrier communication slave and signal lamp, traffic signaling equipment connects the carrier communication main frame, the carrier communication main frame by carrier communication from the machine control signal lamp; The carrier communication main frame is identical with carrier communication slave circuit structure;
The carrier communication main frame mainly is made of power circuit, carrier communication transmission circuit, host CPU and peripheral circuit thereof;
Power circuit provides DC12V power supply for the carrier communication transmission circuit, and the VCC power supply of 5V is provided for host CPU;
The carrier communication transmission circuit comprises coupling filtering circuit, resonance and amplitude limiter circuit, host CPU chip PL3201, power amplifier and shaping circuit; Coupling filtering circuit, resonance and the amplitude limiter circuit of carrier communication transmission circuit, host CPU chip PL3201, power amplifier are connected successively with shaping circuit; The coupling filtering circuit comprises pickup coil, and pickup coil secondary comprises two groups of taps, and wherein one group is used for the carrier signal input and receives, and another group is used for the output emission of carrier signal;
The line of electric force L-220 V that comprises carrier signal, the input end L end of N-220V access carrier transceiver communication circuit, the N end that come from traffic signaling equipment, the electric mutually carrier signal input end SIGIN that after coupling filtering circuit, resonance and amplitude limiter circuit are handled, is sent to host CPU chip PL3201 of 220V, send into power amplifier through the carrier signal after the host CPU chip PL3201 modulation from the carrier signal output terminal SIGOUT of host CPU chip PL3201 and carry out power amplification, the carrier signal after the amplification is coupled on the 220V line of electric force by pickup coil;
The carrier communication main frame receives the data that traffic signaling equipment issues by serial ports, and gives the carrier communication slave by power line carrier communication with data transfer, after the carrier communication slave receives the carrier data of line of electric force, carrier data is decoded and the control signal lamp.
Power line carrier control traffic signal lamp system scheme based on chip PL3201 provided by the invention, make traffic light control system regulate control according to the road surface actual conditions, can regulate control according to the road surface actual conditions, remedy the shortcoming that existing traffic light control system exists, not only easy and simple to handle, control flexibly, improved system reliability simultaneously, reduced the plant maintenance amount, in the technical innovation to some extent of traffic light control system.
Description of drawings
Fig. 1, system chart of the present invention;
Fig. 2, carrier communication transmission circuit block diagram;
Fig. 3, power circuit diagram;
Fig. 4, carrier communication transmission circuit figure;
Fig. 5, host CPU and peripheral circuit diagram thereof;
Fig. 6, serial ports receive the data program block diagram;
Fig. 7, carrier transmitting-receiving interrupt service routine block diagram.
Embodiment
For a more clear understanding of the present invention, describe the present invention in conjunction with the accompanying drawings and embodiments in detail:
Extremely shown in Figure 7 as Fig. 1, traffic signal lamp system based on the control of chip PL3201 power line carrier, comprise traffic signaling equipment, carrier communication main frame, carrier communication slave and signal lamp, traffic signaling equipment connects the carrier communication main frame, the carrier communication main frame by carrier communication from the machine control signal lamp; The carrier communication main frame is identical with carrier communication slave circuit structure;
The carrier communication main frame mainly is made of power circuit, carrier communication transmission circuit, host CPU and peripheral circuit thereof;
Power circuit provides DC12V power supply for the carrier communication transmission circuit, and the VCC power supply of 5V is provided for host CPU; RV1 is a voltage dependent resistor (VDR), plays the effect of the whole electronic circuit of protection;
What U1 used is the lucky star transformer that dawn, journey company provided, and 3W becomes 12V with the ac line voltage of 220V;
U2 is a silicon bridge, is DC voltage with ac voltage rectifier, and VHH is DC12V, as the power supply of carrier wave transtation mission circuit, and the electrochemical capacitor of additional 2200 μ F/25V, voltage dithering when preventing the carrier wave transmission;
VHH through MC7805 surely to the VCC power supply of 5V, as the working power of chip.
The carrier communication transmission circuit comprises coupling filtering circuit, resonance and amplitude limiter circuit, host CPU chip PL3201, power amplifier and shaping circuit;
Wherein, the coupling filtering circuit is made up of capacitor C 21, pickup coil T1, transient voltage suppresser D13, capacitor C 22, capacitor C 23 and resistance R 14; Resonance and amplitude limiter circuit are made up of inductance L 2, voltage stabilizing diode D9, voltage stabilizing diode D10;
Pickup coil T1 adopts M1015, and the pickup coil ratio is 10:15, and power amplifier is the lucky star special circuit that dawn, journey company provided, and transient voltage suppresser D13 model is P6KE30C;
Be sent to the power amplifier input end (FSK_OUT0) of carrier communication transmission circuit through host CPU chip PL3201 modulated carrier signal from host CPU chip PL3201 pin P3.7, the carrier signal of amplifying through power amplifier is coupled to line of electric force through pickup coil M1015.
The carrier communication main frame receives the data that issue from the host computer serial ports, and gives the carrier communication slave by power line carrier communication with data transfer.
Host CPU adopts chip PL3201, and its peripheral circuit mainly is made of 9.6MHZ crystal oscillator, 480KHZ ceramic filter LT480BU and rescap;
SIGIN0 is received signal after treatment.FSK_OUT0 is the process modulated carrier signal of P3.7 output.
PL3201 is a kind of single-chip microcomputer that can carry out carrier communication by line of electric force.The QFSK(quarternary phase-shift keying (QPSK) has been adopted in its inside) modulation system, the multi-address communication technology of variable pseudo-random code speed (bandwidth).Its centre carrier frequency is 120KHZ, can reach 1Kbps and 500bps according to the different pieces of information transfer rate of pseudo-random code speed.Adopted 63 Gold/Kasami sequences simultaneously, realized CDMA, its address number can reach 41 at most.In addition, the carrier modulation output signal of PL3201 can be configured to sinewave output or square wave output by software flexible.
The carrier communication main frame receives the traffic signals machine data as main frame, sends to then to be positioned at the carrier communication slave of installing on each traffic lights lamp holder (at present by each carrier communication slave of all directions direction).The carrier communication slave demodulates data, and then the control signal lamp.
As Fig. 6, shown in Figure 7, communication flow of the present invention is as follows:
(1) PL3201 carrier communication main frame reception host computer (generally being meant traffic signaling equipment) the following of serial ports sends instructions;
(2) the carrier communication main frame particular content part that will send instructions down with transparent, the method for synchronization, sends on the circuit by carrier wave.After transmission finishes, enter accepting state, and begin timing in 1 second;
(3) four carrier communication slave normalities are the carrier wave accepting state, and the synchronizing frame head of detected carrier circuit (0x09,0xAF);
(4) detect synchronizing frame head after, the carrier communication slave calculates by communication protocol and should receive data length;
(5) receive communication data according to receiving length;
(6) after arrival received length, each carrier communication slave began 2 seconds timing, and in 1 second, timesharing sends it back feedback signal to the carrier communication main frame, after transmission finishes, reentered accepting state separately;
(7) the carrier communication main frame does not receive the feedback signal of complete 4 carrier communication slaves in 1 second of timing, then reenters for (2) step;
(8) 4 carrier communication slaves do not receive the data of carrier communication main frame once more in 2s, think that then these group data are valid data, further handle, and this communication process finishes;
(9) if 4 carrier communication slaves have received the data of carrier communication main frame once more in 2s, then abandon the group data, receive new data after, reenter (6) and go on foot.
The communication protocol that adopts comprises:
(A) the host CPU chip PL3201 serial communication protocol communication mode of traffic signaling equipment and carrier communication main frame is asynchronous serial communication, baud rate 9600bps;
Communication protocol: significance bit group length (1 byte)+effective byte.
(B) subchannel communication protocol
Communication protocol: 1 address code+significance bit group length (1 byte)+effective byte.
The processing of carrier communication slave fault: do not receive the data that the carrier communication main frame sends in order to prevent the carrier communication slave, set up a kind of mechanism: the carrier communication main frame sends data (address of four carrier communication slaves is identical) simultaneously to four carrier communication slaves, after the carrier communication slave receives, timesharing sends it back feedback signal (the carrier communication host address is different with four carrier communication slave addresses) to the carrier communication main frame, begins two seconds timing simultaneously.If the carrier communication main frame has received four feedback signals in 1.5 seconds, then the carrier communication main frame no longer sends data, enters accepting state; If the carrier communication main frame received incomplete 4 feedback signals in 1.5 seconds, then resend original data.For the carrier communication slave, in 2 seconds timing, do not receive the data of carrier communication main frame again, data came into force after then timing finished; If received data again, then abandon the group data, restart 2 seconds timing.
After the feedback failure through certain number of times, the carrier communication main frame can show it is which carrier communication slave fault, and corresponding pilot lamp is bright.
Carrier communication slave program and carrier communication mainframe program are similar, and main difference is: a) the reception program of carrier communication slave will add the address judgement.Because the carrier communication slave is when feeding back to the carrier communication host signal, other carrier communication slave also can receive the feedback signal of this carrier communication slave, judges that the signal of differentiating the carrier communication main frame still is the feedback signal of carrier communication slave so will add the address.B) the carrier communication slave will send it back feedback signal to the carrier communication main frame through after the different time-delays after receiving the carrier communication host data.
According to the above description, can realize the solution of the present invention in conjunction with art technology.
Claims (1)
1. the traffic signal lamp system of power line carrier control, it is characterized in that, system comprises traffic signaling equipment, carrier communication main frame, carrier communication slave and signal lamp, and traffic signaling equipment connects the carrier communication main frame, the carrier communication main frame by carrier communication from the machine control signal lamp; The carrier communication main frame is identical with carrier communication slave circuit structure; The carrier communication main frame mainly is made of power circuit, carrier communication transmission circuit, host CPU and peripheral circuit thereof; Power circuit provides DC12V power supply for the carrier communication transmission circuit, and the VCC power supply of 5V is provided for host CPU; Described carrier communication transmission circuit comprises coupling filtering circuit, resonance and amplitude limiter circuit, host CPU chip PL3201, power amplifier and shaping circuit; Coupling filtering circuit, resonance and the amplitude limiter circuit of carrier communication transmission circuit, host CPU chip PL3201, power amplifier are connected successively with shaping circuit; The coupling filtering circuit comprises pickup coil, and pickup coil secondary comprises two groups of taps, and wherein one group is used for the carrier signal input and receives, and another group is used for the output emission of carrier signal; The line of electric force L-220 V that comprises carrier signal, the input end L end of N-220V access carrier transceiver communication circuit, the N end that come from traffic signaling equipment, the electric mutually carrier signal input end SIGIN that after coupling filtering circuit, resonance and amplitude limiter circuit are handled, is sent to host CPU chip PL3201 of 220V, send into power amplifier through the carrier signal after the host CPU chip PL3201 modulation from the carrier signal output terminal SIGOUT of host CPU chip PL3201 and carry out power amplification, the carrier signal after the amplification is coupled on the 220V line of electric force by pickup coil; The carrier communication main frame receives the data that traffic signaling equipment issues by serial ports, and gives the carrier communication slave by power line carrier communication with data transfer, after the carrier communication slave receives the carrier data of line of electric force, carrier data is decoded and the control signal lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101676855A CN102289941A (en) | 2011-06-21 | 2011-06-21 | Traffic signal lamp system controlled by power line carriers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101676855A CN102289941A (en) | 2011-06-21 | 2011-06-21 | Traffic signal lamp system controlled by power line carriers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102289941A true CN102289941A (en) | 2011-12-21 |
Family
ID=45336318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101676855A Pending CN102289941A (en) | 2011-06-21 | 2011-06-21 | Traffic signal lamp system controlled by power line carriers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102289941A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752027A (en) * | 2012-08-01 | 2012-10-24 | 郑州航天赛世特电子有限公司 | Pure flooding adaptive low-voltage power line carrier communication unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2414470Y (en) * | 2000-04-13 | 2001-01-10 | 张克宇 | Distribution type traffic signal lamp controller |
| JP2007004541A (en) * | 2005-06-24 | 2007-01-11 | Sumitomo Electric Ind Ltd | Traffic control system and signal controller |
| CN201119081Y (en) * | 2007-10-10 | 2008-09-17 | 重庆市易博数字技术有限公司 | Automatic detection device for LED traffic signal lamp based on power carrier |
| CN201518162U (en) * | 2009-09-14 | 2010-06-30 | 杭州普乐科技有限公司 | Intelligent traffic signal control system based on power line carrier |
-
2011
- 2011-06-21 CN CN2011101676855A patent/CN102289941A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2414470Y (en) * | 2000-04-13 | 2001-01-10 | 张克宇 | Distribution type traffic signal lamp controller |
| JP2007004541A (en) * | 2005-06-24 | 2007-01-11 | Sumitomo Electric Ind Ltd | Traffic control system and signal controller |
| CN201119081Y (en) * | 2007-10-10 | 2008-09-17 | 重庆市易博数字技术有限公司 | Automatic detection device for LED traffic signal lamp based on power carrier |
| CN201518162U (en) * | 2009-09-14 | 2010-06-30 | 杭州普乐科技有限公司 | Intelligent traffic signal control system based on power line carrier |
Non-Patent Citations (1)
| Title |
|---|
| 张记凯等: "基于PL3201芯片的电力线载波通信技术应用", 《电子技术应用》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752027A (en) * | 2012-08-01 | 2012-10-24 | 郑州航天赛世特电子有限公司 | Pure flooding adaptive low-voltage power line carrier communication unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203827378U (en) | Serial server | |
| CN104199388B (en) | Wireless communication controlling device and method of intelligent gas meter | |
| CN202093678U (en) | One-line type dispersive traffic signal lamp control system | |
| CN1649281B (en) | Asymmetric power carrier wave communication device | |
| CN201854478U (en) | Street lamp control circuit for controlling any node based on digital technology | |
| CN105679073A (en) | LED traffic signal lamp fault feedback method | |
| CN102289941A (en) | Traffic signal lamp system controlled by power line carriers | |
| CN202093682U (en) | Traffic light system based on chip PL 3201 power line carrier control | |
| CN201123156Y (en) | Road lamp energy-saving control system | |
| CN206712785U (en) | A kind of broadband power line carrier collector | |
| CN201821346U (en) | Intelligent communication module | |
| CN208477514U (en) | A kind of SPI of intelligent temperature controller turns the analog circuit of UART | |
| CN207337670U (en) | A kind of traffic signal control system | |
| CN204291500U (en) | Intelligent building combined lighting long distance control system | |
| CN202696954U (en) | One-to-many master-slave mode LED illumination remote control device | |
| CN103139054A (en) | Gateway based on konnex (KNX) protocol and digital addressable lighting interface (DALI) protocol | |
| CN205336276U (en) | Based on many windings coupling inductance power line carrier communication system | |
| CN103369759A (en) | One-to-many master-slave mode LED illumination remote-control device | |
| CN103987152A (en) | Intelligent control module of intelligent illumination system | |
| CN205320352U (en) | Light operator based on power line communication | |
| WO2020057076A1 (en) | Long-distance power-line carrier apparatus with relay | |
| CN205354330U (en) | Scene lamp control system based on power line carrier communication | |
| CN205847702U (en) | A kind of intelligent Centralized Controller based on OFDM technology | |
| CN203951471U (en) | A kind of intelligent lighting device for power line carrier communications | |
| CN205847707U (en) | A kind of intellectual single light controller being applicable to high-pressure mercury lamp based on OFDM technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111221 |