CN201119081Y - Automatic detection device for LED traffic signal lamp based on power carrier - Google Patents
Automatic detection device for LED traffic signal lamp based on power carrier Download PDFInfo
- Publication number
- CN201119081Y CN201119081Y CNU2007201879280U CN200720187928U CN201119081Y CN 201119081 Y CN201119081 Y CN 201119081Y CN U2007201879280 U CNU2007201879280 U CN U2007201879280U CN 200720187928 U CN200720187928 U CN 200720187928U CN 201119081 Y CN201119081 Y CN 201119081Y
- Authority
- CN
- China
- Prior art keywords
- power line
- signal
- analog switch
- mcu
- led traffic
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Traffic Control Systems (AREA)
Abstract
The utility model relates to an automatic detecting device of the LED traffic signal lamp based on the power line transmission, which comprises a signal acquisition part, a controlling and processing part and a data transmission part. The signal acquisition part is composed of an LED traffic signal lamp and an analog switch, the LED traffic signal lamp is accessed to the MCU of the controlling and processing part through the voltage on the current limiting resistor and through the analog switch, the circulation of the analog switch is controlled by the MCU, a voltage signal on the current limiting resistor is collected in the fixed time, the signal acquisition is completed, after the detecting signal is processed through the micro control unit, namely the MCU, the transmitting part is controlled to transmit the detecting result to a traffic signal controlling machine; the data transmission part adopts a BW10 power line carrier wave module to be embarked on a low pressure power line, and the data transmission of the LED traffic signal lamp and the traffic signal controlling machine are realized. The automatic detecting device has the advantages that the transmitting distance of the transmission signal is long, the communication speed is quick, reliable and stable, and the timeliness and the compatibility are strong.
Description
Technical field
The utility model relates to low voltage power line carrier and the application of automatic control technology in ITS (intelligent transportation system), is specifically related to the on-line automatic detection device of LED traffic lights real-time working situation.
Background technology
Along with China's rapid economic development, accelerated the process of urbanization, motorize, ITS bringing into play more and more important effect in city traffic management.The LED traffic lights are as road marking tools important among the ITS, and its quality has directly influenced the current quality of road traffic.How it being carried out in time, detects exactly is a key issue that urgency is to be solved.At present, the fault detect of LED traffic lights, adopt all generally that artificial cognition (as naked eyes identification, traffic obstacle Shen announcement etc.) LED damages what, can show a complete road traffic signal figure? influence normally to make and be used for safeguarding? the method of this dependence artificial cognition is poor accuracy not only, and real-time do not reach requirement, makes the current quality of road be subjected to great influence.
Conventional traffic signal figure is by more than every group (3 ~ 5) LED series connection, form a complete road traffic signal figure by the parallel connection of many groups again, figure mainly contains following several: the road traffic identifier of disk, arrow, humanoid, shape such as pitch, turn around.
The LED traffic lights are shared out bonus, yellow, green three kinds of colors, and under the 12V operating voltage, the voltage on the current-limiting resistance is respectively 1.6V, 1.7V, 1.0V.
How to detection signal in real time, transmission is a key issue exactly, and following several scheme is arranged usually:
1. realize that based on the GPRS/CDMA Radio Transmission Technology data send, its weak point is that cost is higher;
2. transmit by telephone wire, its shortcoming is that transmission speed is slow, difficult in maintenance;
3. transmit by dedicated data line, but need rewiring, time-consuming, effort, and inconvenient maintenance.
Power line carrier technology comes across the initial stage of the '20s in last century, and the example of power application line transmission signals is the power line phone the earliest.The technology of carrier communication on the high-voltage power line more than the 10KV be comparative maturity, but in the information transmission technology on the low-voltage power line still in research and development.Low-voltage powerline carrier communication is meant and utilizes existing low-voltage power line to realize data passes and information exchange as transmission medium.
Low-voltage power line is to lay for the power frequency electric energy of transmission 50Hz.Owing to do not lay, so its characteristic often is difficult to satisfy the requirement of carrier communication for communication.This is embodied directly in two aspects: the first, the impedance operator of electric power networks and decay thereof have restricted the transmission range of signal; The second, the noise jamming on the low-voltage power line has restricted signal transfer quality.Owing on low-voltage power line, there are many rapid factors that descends of signal to noise ratio that makes carrier signal, make carrier signal be difficult to transmission effectively in a power supply area, this just must choose suitable low-voltage power line MODEM.The utility model patent has selected for use BW10 power carrier MODEM and MCU to form LED traffic lights automatic detection device based on the LED traffic lights automatic detection device of power line carrier technology.
Summary of the invention
The purpose of this utility model is to design a kind of on-line automatic detection device of transmitting the LED traffic lights real-time working situation of data based on low voltage power line carrier, and the signal that is detected can be passed through controlled pulse carrier to the low-voltage power line of 220V, realize that LED traffic lights and traffic signal controlling machine carry out the on-line automatic monitoring system of transfer of data.
The technical solution of the utility model is as follows:
The LED traffic lights automatic detection device based on power line transmission that the utility model proposes is grouped into by signals collecting part, control and processing section and data transfer part.
Described signal acquisition part branch comprises LED traffic lights and analog switch, the LED traffic lights are to be connected with a current-limiting resistance by many LED to form one group, be formed in parallel by many groups, it is MCU that the voltage on the current-limiting resistance inserts micro-control unit by analog switch again;
It is MCU that a micro-control unit is adopted in described control and processing section, has write control and process software, is circulated, is periodically gathered the voltage signal on the current-limiting resistance by MCU control analog switch, finishes signal ground and obtains; Detection signal is after MCU handles, to connect tcp data segment by interface again through micro-control unit, and the control data transmission part sends testing result to traffic signal controlling machine;
Described tcp data segment adopts BW10 power line carrier module to carry on low-voltage power line, realizes the transfer of data of LED traffic lights and traffic signal controlling machine.
This device has adopted low voltage power line carrier and has controlled the application technology that engages automatically, utilize existing 220V low-voltage power supply line on the LED traffic lights, the LED traffic lights are implemented online automatic detection, need not rewiring, and accuracy of detection height, satisfy the demand of automatic in real time warning and on-call maintenance, made effective, the normal operation of traffic lights, brought into play its due function.This device transmission signals long transmission distance, communication speed is fast, detects accurately, and transmission is reliable, and antijamming capability is strong, good stability, real-time and compatible strong.Through practical application, shown that this system is stable, reliable in data acquisition, processing and data communication.Simple, the dependable performance of power line MODEM circuit based on BW10 can reach the online in real time detection to the LED traffic lights, the function of reporting to the police automatically fully.Simultaneously, the occasion less to some volumes of transmitted data, that rate requirement is not high also has good application prospects.
Description of drawings
Fig. 1 is LED traffic lights schematic diagrams
Fig. 2 is a LED traffic lights automatic detection device hardware block diagram of the present utility model
Fig. 3 is an input schematic diagram of the present utility model
Fig. 4 is a transfer of data schematic diagram of the present utility model
Fig. 5 is control of the present utility model and process software flow chart
Embodiment
This device is made up of hardware and software two parts.
1, hardware components:
This device is grouped into by signals collecting part, control and processing section and data transfer part.Referring to Fig. 2, Fig. 3 and Fig. 4, the signal acquisition part branch comprises LED traffic lights and analog switch.In conjunction with the visible LED traffic lights of Fig. 1 is to be connected with a current-limiting resistance by 4 LED to form one group, is formed in parallel by many groups again, and the voltage on the current-limiting resistance is MCU by the micro-control unit of analog switch 4051 access controls and processing section.MCU adopts the MEGA8 of atmel corp, is circulated, is periodically gathered the voltage signal on the current-limiting resistance by MCU control analog switch 4051, finishes signal ground and obtains.A/D converter has one 8 path analoging switch in the MCU, and the output of the multi-disc analog switch 4051 of signals collecting part inserts in 8 path analoging switch, finishes signal ground and obtains; After home address decoding, choose 1 in the multi-disc analog switch 4051, again through external address decoding, choose a passage of this sheet 4051, the voltage signal that this passage is detected carries out the A/D conversion then; After MCU handled, control data transmission partly sent to traffic signal controlling machine by low-voltage power line MODEM and detects data with the signal that collects.It is MODEM that tcp data segment adopts two embedded low voltage power line carrier modulator-demodulators of BWP10, lift-launch is on low-voltage power line, one of transmitting terminal directly is connected with RXD, the TXD of MCU, another is connected receiving terminal with traffic signal controlling machine by the RS232 serial ports, realizes the transfer of data of LED traffic lights and traffic signal controlling machine.
The embedded low-voltage power line MODEM of BWP10 module employing+12V power supply, baud rate 300bps has standard RS232 interface and Transistor-Transistor Logic level interface, can directly (COM1 COM2) connects, and a receipts/data with serial ports of computers; Also can directly be connected with RXD, the TXD of MCU, it provides the half-duplex operation function, can be at 220/110V, realize local communication on the 50/60Hz power line; Realize the transfer of data of LED traffic lights and traffic signal controlling machine.It provides transparent transmission channel for transfer of data, and transfer of data and User Agreement are irrelevant, by the positive reliability of user data transmission protocol verification transfer of data; Under same transformer, a plurality of BWP10 modules can be connected on same the low-voltage power line; Under the master-slave communication pattern, module works independently respectively, can not influence each other.
2. software section
Referring to Fig. 5, the transfer of data of detection signal: transmitting terminal at first sends notification signal, has data to transmit with the notice receiving terminal; And then the transmission synchronous code, then send data.After receiving terminal receives notification signal, just change synchronous code over to and detect, after detecting three synchronous codes, begin to receive data.Consider carrier wave stabilization time, 5ms need delay time when router begins.Receiving terminal detects the data that receive, and then reports to the police to the traffic monitoring center if any fault, and sends this group LED sequence number, is convenient to keep in repair timely.
The course of work of this device is as follows:
Referring to Fig. 2, the voltage signal on every group of LED current-limiting resistance in the LED traffic lights is realized the collection of detection signal by the analog switch of MCU control; A/D converter by MCU becomes digital signal with analog signal conversion, and with the threshold ratio that pre-sets, detect the working condition of every group of LED; After MCU handled, control BW10 power line carrier module was finished to be loaded on the power line after filtering (its filter center frequency is 115KHZ), the modulation and is transmitted; The BW10 power line carrier module of receiving terminal is carried out filtering, demodulation with the detection signal that receives, and sends into traffic signal controlling machine.Report to the police to the traffic monitoring center by traffic signal controlling machine, and transmission damages the sequence number of LED group, realize the online in real time of LED traffic lights is detected, reports to the police automatically.
Claims (4)
1,, it is characterized in that device is grouped into by signals collecting part, control and processing section and data transfer part based on the LED traffic lights automatic detection device of power line transmission:
Described signal acquisition part branch comprises LED traffic lights and analog switch, the LED traffic lights are to be connected with a current-limiting resistance by many LED to form one group, be formed in parallel by many groups, it is MCU that the voltage on the current-limiting resistance inserts micro-control unit by analog switch again;
It is MCU that a micro-control unit is adopted in described control and processing section, has write control and process software, is circulated, is periodically gathered the voltage signal on the current-limiting resistance by MCU control analog switch, finishes obtaining of signal; Detection signal is after MCU handles, to be connected with tcp data segment by interface through micro-control unit, and the control data transmission part sends testing result to traffic signal controlling machine;
Described tcp data segment adopts BW10 power line carrier module, carries on low-voltage power line, realizes the transfer of data of LED traffic lights and traffic signal controlling machine.
2, the LED traffic lights automatic detection device based on power line transmission as claimed in claim 1, it is characterized in that, the LED traffic lights of described signals collecting part are to be connected into one group by 3-5 LED and a current-limiting resistance, many then group parallel connections and form a road traffic and illustrate figure.
3, the LED traffic lights automatic detection device based on power line transmission as claimed in claim 1 or 2, it is characterized in that, A/D converter has a multiway analog switch in the MCU of described control and processing section, the output of the multi-disc analog switch of signals collecting part inserts in the multiway analog switch, finishes obtaining of signal; After home address decoding, choose 1 in the multi-disc analog switch, again through external address decoding, choose a passage of this sheet analog switch, the voltage signal that this passage is detected carries out the A/D conversion then; With the signal that collects after treatment, control data transmission partly sends to traffic signal controlling machine by low-voltage power line MODEM and detects data.
4, the LED traffic lights automatic detection device based on power line transmission as claimed in claim 3, two the embedded low voltage power line carrier modulator-demodulators of BWP10 of BW10 power line carrier module employing that it is characterized in that described tcp data segment are MODEM, one directly is connected with RXD, the TXD of MCU, another is connected with traffic signal controlling machine by the RS232 serial ports, the embedded low-voltage power line MODEM of BWP10 module employing+12V power supply, baud rate 300bps has standard RS232 interface and Transistor-Transistor Logic level interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201879280U CN201119081Y (en) | 2007-10-10 | 2007-10-10 | Automatic detection device for LED traffic signal lamp based on power carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201879280U CN201119081Y (en) | 2007-10-10 | 2007-10-10 | Automatic detection device for LED traffic signal lamp based on power carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201119081Y true CN201119081Y (en) | 2008-09-17 |
Family
ID=39993686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201879280U Expired - Fee Related CN201119081Y (en) | 2007-10-10 | 2007-10-10 | Automatic detection device for LED traffic signal lamp based on power carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201119081Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102289941A (en) * | 2011-06-21 | 2011-12-21 | 天津市顺通电子有限公司 | Traffic signal lamp system controlled by power line carriers |
| CN102087791B (en) * | 2009-12-02 | 2013-10-30 | 西安费斯达自动化工程有限公司 | Traffic signal control system for power line carrier communication |
| CN113112834A (en) * | 2021-04-14 | 2021-07-13 | 广东古田智能科技有限公司 | Traffic light system and lamp bead fault detection method thereof |
| CN114019897A (en) * | 2021-11-03 | 2022-02-08 | 重庆攸亮科技股份有限公司 | Road indicator lamp |
-
2007
- 2007-10-10 CN CNU2007201879280U patent/CN201119081Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087791B (en) * | 2009-12-02 | 2013-10-30 | 西安费斯达自动化工程有限公司 | Traffic signal control system for power line carrier communication |
| CN102289941A (en) * | 2011-06-21 | 2011-12-21 | 天津市顺通电子有限公司 | Traffic signal lamp system controlled by power line carriers |
| CN113112834A (en) * | 2021-04-14 | 2021-07-13 | 广东古田智能科技有限公司 | Traffic light system and lamp bead fault detection method thereof |
| CN114019897A (en) * | 2021-11-03 | 2022-02-08 | 重庆攸亮科技股份有限公司 | Road indicator lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109728838A (en) | Platform area identifying system and recognition methods based on broadband power line carrier and power frequency communication | |
| CN201119081Y (en) | Automatic detection device for LED traffic signal lamp based on power carrier | |
| CN103781255A (en) | Intelligent LED street lamp monitor system based on ZigBee and Wi-Fi technology | |
| CN202189458U (en) | Automatic meter reading system | |
| CN201984122U (en) | Transformer synthesis and intelligent assessment device | |
| CN203632354U (en) | Electricity consumption information acquisition abnormity positioning system in electric network | |
| CN104392603B (en) | A kind of live power information collecting device intelligent diagnosis system | |
| CN203275994U (en) | Energy-saving control system based on power carrier wave and ZIGBEE network technologies | |
| CN202903962U (en) | Photovoltaic component monitoring system | |
| CN202929836U (en) | Power utilization information acquisition device and power utilization information acquisition system | |
| CN209088949U (en) | Bimodulus communication intelligent concentrator | |
| CN104699081B (en) | The closed loop fault detection method and system of a kind of intelligent hotel control unit | |
| CN206584527U (en) | A kind of wireless carrier switch endpoint | |
| CN206741692U (en) | The energy data extraction element of electric energy meter | |
| CN202632501U (en) | Wireless sensor network-based building group energy consumption monitoring device | |
| CN204332092U (en) | Traffic lights automatic checkout system | |
| CN205920596U (en) | Use electric information collection concentrator based on DLMSCOSEM | |
| CN212008793U (en) | Anti harmonic PT of intelligence synthesizes protector's integration test platform | |
| CN106291318A (en) | Locomotive control loop ground detection device and control method thereof | |
| CN205017270U (en) | Monitoring system for photovoltaic power plant operation conditions | |
| CN208999483U (en) | A kind of expansible multifunctional electrical parameter measuring instrument table | |
| CN104133797B (en) | A kind of environmental monitoring data adapter of Based PC 104 bus | |
| CN203164750U (en) | M-BUS bus monitoring circuit | |
| CN203084942U (en) | Parking lot management system based on Zigbee | |
| CN203136300U (en) | Illuminator-fault monitoring apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20111010 |