CN101916512A - Intelligent traffic signal lamp - Google Patents
Intelligent traffic signal lamp Download PDFInfo
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- CN101916512A CN101916512A CN 201010260133 CN201010260133A CN101916512A CN 101916512 A CN101916512 A CN 101916512A CN 201010260133 CN201010260133 CN 201010260133 CN 201010260133 A CN201010260133 A CN 201010260133A CN 101916512 A CN101916512 A CN 101916512A
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Abstract
The invention provides an intelligent traffic signal lamp, which is technically capable of replacing the conventional traffic signal lamp completely and is developed newly. The traffic signal lamp is characterized in that: a traffic control signal lamp and a traffic signal controller are in information connection through a communication link; and the same traffic control signal lamp can display different colors, different types of patterns, symbols, characters and digits by point-set display technology. The intelligent traffic signal lamp can display different colors, different types of patterns, symbols, characters and digits according to control commands of the communication link or presetting.
Description
Technical field
The present invention relates to a kind of traffic signals display system, especially relate to a kind of traffic signals display system of utilizing same traffic lights can show multiple graphical symbol, multiple color, belong to the public transit facility technical field.
Background technology
In modern city, population and automobile are growing, and urban transportation is also crowded day by day, and people's safety problem also becomes more and more important.Therefore, red green traffic signal lamp becomes one of important tool of traffic control division management traffic.There has been traffic lights people's safety trip that very big guarantee has been arranged.Since traffic lights were born, its inner circuit control system just constantly was modified, and method for designing also begins varied, thereby made traffic lights seem intelligent, practical more.Especially in recent years, along with electronics and fast development of computer technology, electronic circuit analysis and method for designing have had very big improvement, electric design automation has also become indispensable instrument and means in the contemporary electronic systems, and these designs for the traffic lights control circuit provide certain technical foundation.
Existing traffic lights are to show red, yellow, green all over the screen, direction arrow symbol, humanoid symbol etc. simply mostly, in use can not change after these figures, symbol and the color settings, can not show different literal with same signal lamp, can not show multiple graphical symbol at same traffic lights, can not show many colors at same signal lamp.Its problem is that existing signal lamp does not have intelligent processing system, only relies on power-on switch, and fixedly figure and constant color show.
In addition, existing traffic signal controlling machine, the traffic lights at each crossing or subsidiary one or several the auxiliary crossings of master are by a road traffic signal controller centralized control.Need a large amount of cable and pipeline according to existing connected mode, quantities is big, and difficulty of construction is big, and is destructive big to means of transportation, engineering construction expense height, and the system maintenance cost is big, and system reliability is low.
Summary of the invention
Technical matters to be solved by this invention provides a kind of intelligent traffic lamp, can or preestablish according to online control command to show different colours, different types of figure, symbol, literal or numeral.
For solving the problems of the technologies described above, the invention provides a kind of intelligent traffic lamp, comprise traffic control light and controller, it is characterized in that: communicate by communication link between traffic control light and the traffic signals traffic signal controlling machine.
Aforesaid intelligent traffic lamp is characterized in that: same traffic control light utilization point set display module can show different colours, different types of figure, symbol, literal and numeral.
Aforesaid intelligent traffic lamp is characterized in that: described traffic control light comprises following each functional module:
Communication interface modules: comprise wire communication, radio communication and control interface, be used to realize the data communication between traffic control light and the traffic signal controlling machine;
Message processing module: comprise processor and storer, described processor is used to realize local be provided with and from the explanation and the processing of the various control commands of controller, result is delivered to signal display module and realizes that traffic signals show that described storer is used to store various process softwares, literal, numeral, figure and symbol data;
Signal display module: be used to realize the demonstration of various traffic control signals, comprise different colours, different types of figure, symbol, literal and numeral.
Aforesaid intelligent traffic lamp is characterized in that: carry out data communication by wired or wireless data link between traffic control light and the traffic signal controlling machine.
Aforesaid intelligent traffic lamp is characterized in that: carry out data communication by serial data communications busses between traffic control light and the traffic signal controlling machine.
Aforesaid intelligent traffic lamp is characterized in that: described traffic signal controlling machine links to each other with one group of serial data communications busses at least, and every group of serial data communications busses links to each other with at least one traffic control light.
Aforesaid intelligent traffic lamp is characterized in that: described communication module comprises
The wire communication link: be between intelligent transportation control signal lamp and the traffic signal controlling machine by electric wire or optical fiber as the physical connection medium, realize serial data communication.
Wireless communication link: be intelligent transportation control signal lamp with traffic signal controlling machine between by radiowave or light wave as being connected medium, realize serial data communication.
The control interface link: be intelligent transportation control signal lamp with traffic signal controlling machine between by control signal wire as being connected medium, realize that signal shows to select and control.
Aforesaid intelligent traffic lamp is characterized in that: describedly comprise based on the bussing technique communication module
Bus interface: be the interface between communication control module and the physical bus, finish the physical layer function of ISO OSI Reference Model;
Communication control module: be used to realize the second layer link layer functionality of ISO OSI interconnection reference model, comprise Logical Link Control Techniques and media interviews control technology.
Aforesaid intelligent traffic lamp is characterized in that: described processor is microprocessor, FPGA (field programmable logic device) or CPLD (CPLD).
The beneficial effect that the present invention reached:
Intelligent traffic lamp of the present invention, has a display device that meets application requirements by built-in, the geometric configuration of display device (as circular or square), size, light-emitting component (as LED) and color can require to realize effective demonstration of the various figures of traffic signals, symbol, literal and numeral according to different applied customizations according to the control of traffic signal control system.
Description of drawings
Fig. 1 is that intelligent transportation control signal lamp implementation of the present invention is formed structural representation
Fig. 2 is the structural representation of the intelligent transportation control signal lamp based on bus of the present invention;
Fig. 3 is the signal lamp connection diagram based on serial data bus communication;
Fig. 4 is an ISO OSI type physical layer architecture model synoptic diagram;
Fig. 5 is a media interviews control function model workflow diagram;
Fig. 6 is a traffic control light display module workflow diagram.
Among the figure: LLC: logic link control; MAC: media interviews control; PLS: physics letter bell MDI: medium dependent interface; MAU: media access unit; PMA: physical medium auxiliary equipment
Embodiment
Radio communication
Mainly comprise short-distance wireless communication, GMS communication, GPRS communication, 3G communication, infrared communication etc., these all are proven technique, are not described in detail.
Wire communication
Utilize electric wire, the optical fiber communication system as data transfer medium, these all are proven technique, are not described in detail.
Think that below intelligent transportation control signal (form structure and the see Fig. 2) lamp based on serial data bus communication is an example, carry out technical descriptioon.
Serial data communications busses
Intelligent traffic lamp of the present invention is different with traditional traffic lights, its key distinction is two aspects: 1. same signal lamp can and/or set in advance according to the control of traffic signaling equipment and show different graphical symbol and literal, and 2. traffic control light is connected employing serial data communication link with information between the teleseme.Wherein the serial data communication link can have a lot of middle realization technology, can carry out the difference classification according to transmission medium, networking structure, message transmission rate, transmission control procedure, transfer encoding system etc.Mainly include line communication and radio communication two big classes, wherein wire communication can be divided into according to the difference of transmission medium that cable (mainly comprising concentric cable and twisted-pair feeder) is communicated by letter, optical fiber communication, can be divided into star-like, bus-type, ring-like and distributed frame according to the networking mode difference of wire communication, preferably, be connected to the networking technology and the embodiment of example explanation traffic control light in the fieldbus mode.That is to say that one or more traffic control light can be connected in series by a bus, serial inserts traffic signal controlling machine again, and connected mode as shown in Figure 3.
Bus interface
Bus interface is the interface between interior communication control module of traffic control light and the physical bus, finishes the physical layer function of ISO OSI Reference Model.As shown in Figure 4, it mainly comprises following three parts:
1) function of physics letter bell (PLS:Physical Signalling) realization and bit representation, timing and sync correlation, media access unit (MAU:Medium Access Unit) expression is used for the funtion part of coupling node to the Physical layer that sends medium.MAU is made of physical medium auxiliary equipment (Physical MediumAttachment) and medium dependent interface (Medium Dependent Interface).
2) functional circuit of bus transmission/reception is realized in the PMA sublayer, and the bus failure detection method can be provided.
3) MDI realizes machinery and the electric interfaces between physical medium and the MAU.
Communication control module
Communication control module in the intelligent transportation control signal lamp is mainly realized the second layer link layer functionality of ISO OSI interconnection reference model.This part mainly is made up of logic link control (LLC:Logic Link Control) and two parts of media interviews controls (Medium Access Control).
Logic connects control (LLC) sublayer, road: the function of logic link control LLC sublayer comprises: frame accepts filter, overloads and announces and recovery management.
1) frame accepts filter: the frame transition that begins on the LLC sublayer is independently, himself operates with previous frame transition irrelevant.Content frame is named by identifier.Identifier can not indicate the content of frame, but the implication of data of description, each receiver accepts filter by frame and determines whether this frame is relevant.
2) overload announcement:, begin to send the overload frame by the LLC sublayer if the receiver interior condition requires to postpone next LLC Frame or LLC remote frame.Can produce two overload frames at most, to postpone next data or to punish severely frame.
3) recovery management: during the transmission, for the frame of losing arbitration or being disturbed by mistake, the LLC sublayer has automatic retransmitting function.Before transmission completed successfully, frame sent service not by customer's approval.
The LLC frame structure
The LLC frame is to be equal to the data cell that exchanges between the entity (LPDU:LLC Protocol Data Unit, logical link control sublayer protocol Data Unit), is the structure of LLC Frame and remote frame below.
1. the LLC Frame is by three potential fields, and promptly identifier field, data length sign indicating number (DLC:Data LengthCode) field and LLC data fields are formed, and table 1 is the LLC data frame format.
Table 1
| Identifier field: ID=11 position | Data length DLC field | The LLC data fields |
Identifier field: ID=11 position
Data length DLC field: 4
LLC data fields: a 0-8 byte
2. LLC remote frame
Table 2 is a LLC remote frame form.
Table 2
| Identifier field: ID=11 position | Data length DLC field |
Identifier field: ID=11 position
The data length sign indicating number DLC field of corresponding data frame: 4
Media interviews control (MAC) sublayer:
Media access control sublayer structure function model: the media access control sublayer function is described by the functional mode of regulation among the IEEE 802.3, as shown in Figure 4, in this model media access control sublayer is divided into two parts that work alone fully, promptly sends part and receiving unit, two-part function is as follows:
Sending the part functional packet draws together:
1. send data encapsulation
A receives LLC frame and interface control information;
B CRC cycle calculations;
C is by constructing mac frame to the additional SOF of LLC frame, RTR position, reservation position, CRC, ACK and EOF
2. send the media interviews management
A confirms bus after the free time, beginning process of transmitting (replying by the interframe free time);
The serialization of b mac frame;
C inserts filler (fill the position);
D is losing under the arbitration cases, withdraws from arbitration and changes receive mode over to;
E error-detecting (monitoring, format check);
F replys verification;
G confirms overload condition;
H structure overload frame also begins to send;
I constructs and makes mistakes frame and begin transmission;
J output serial bit stream to Physical layer is ready for sending.
The receiving unit function comprises:
1. receiving media Access Management Access
A receives serial bit stream by Physical layer;
B removes serial structure and constructs frame structure again;
C detects filler (removing the position fills);
D error-detecting (CRC, format check, fill rule verification)
E sends and replys;
F structure erroneous frame also begins to send;
G confirms overload condition;
H reactivation overload frame structure also begins to send.
2. receive the data dismounting
A is by removing the MAC customizing messages in the received frame;
B output LLC frame and interface control information are to the LLC sublayer.
The mac frame structure
Data send between node and receive with four kinds of dissimilar frames and occur and control, and wherein Frame reaches receiver with data by transmitter; Remote frame is sent by node, sends the Frame with like-identified with request; The frame of makeing mistakes can be sent by any node, and with the testbus mistake, and the overload frame is used to provide the additional delay between previous and subsequent data frame or the remote frame.In addition, Frame and remote frame with interframe space every separating with previous frame.Table 3MAC data frame format, table 4 is a MAC remote frame form.
Table 3
| Frame is initial | The field arbitration | Field control | Data fields | The CRC field | The ACK field | Frame end |
Table 4
| Frame is initial | The field arbitration | Field control | The CRC field | The ACK field | Frame end |
Message processing module
Message processing module in the traffic control light is the brain of intelligent transportation control signal lamp, mainly form by processor and storer two parts, realize local be provided with and from the explanation and the processing of the various control commands of traffic control signal machine, the traffic signals of making response according to these results show by program.Workflow as shown in Figure 5.In the message processing module system power-up or after resetting, all are shown as closed condition, check the on line state of traffic control light and controller, if link to each other with controller, then receive the order of controller,, then read this machine order is set if do not link to each other with controller, then the controller that obtained or the order of this machine are made an explanation, and the data after will handling reach display module and show.
Signal display module based on a set
In intelligent transportation control signal lamp, signal display module realizes the demonstration of various traffic control signals (figure, literal, symbol etc.).It shows traffic control signal according to host computer or traffic signal controlling machine or the functional requirement that sets in advance, realizes point duty, traffic guiding and information indicating function.Display technique based on a set is very abundant, as LED (diode displaying) display, and technology maturation, the reliability height uses extensively.
Power-supply system of the present invention can be civil power, battery, wind-powered electricity generation, solar-electricity or other forms of electric energy.
The present invention has following characteristics:
(1) improves traffic administration and control efficiency;
(2) increase traffic administration and control method;
(3) improve traffic administration and control accurately (accurately) property and validity;
(4) provide more abundant and traffic state information accurately for traffic participant;
(5) versatility and the interchangeability of raising traffic lights;
(6) improve traffic administration and control system reliability, availability;
(7) reduce engineering construction process and implementation cost.
But the function of the present invention's specific implementation comprises:
(1) by wired, wireless, control interface or preestablish the displaying contents that to control or to select traffic lights;
(2) same traffic lights can show different colours, different graphic symbol, different literals, different digital at different time according to controlling and preestablishing requirement;
(3) same traffic lights can show different colours, different graphic symbol, different literals, different digital at one time according to controlling and preestablishing requirement;
(4) same traffic lights can and preestablish requirement shows different colours successively at different time different graphic symbol, different literals, different digital according to control;
(5) same traffic lights can and preestablish different graphic symbol, different literals, the different digital that requirement shows different colours at one time successively according to control;
Use as can be used as circular lamp all over the screen at traffic lights and use, can be used as direction of arrow lamp, again can display text or numeral; Can use as a countdown display by display digit, can use as the traffic behavior display by display text again.
Below disclose the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within protection scope of the present invention.
Claims (10)
1. an intelligent traffic lamp comprises traffic control light and controller, it is characterized in that: communicate by communication link between traffic control light and the traffic signal controlling machine.
2. intelligent traffic lamp according to claim 1 is characterized in that: same traffic control light utilization point set display module can show different colours, different types of figure, symbol, literal and numeral.
3. intelligent traffic lamp according to claim 1 is characterized in that: described traffic control light comprises following each functional module:
Communication module: be used to realize the data communication between traffic control light and the traffic signal controlling machine;
Message processing module: comprise processor and storer, described processor is used to realize local be provided with and from the explanation and the processing of the various control commands of traffic signal controlling machine, result is delivered to signal display module and realizes that traffic signals show that described storer is used to store various process softwares, literal, numeral, figure and symbol data;
Signal display module: be used to realize the demonstration of (comprising figure, symbol, literal and numeral) of various traffic control signals.
4. intelligent traffic lamp according to claim 1 is characterized in that: carry out data communication by wired or wireless data link between traffic control light and the traffic signal controlling machine.
5. intelligent traffic lamp according to claim 4 is characterized in that: carry out data communication by serial data communications busses between traffic control light and the controller.
6. intelligent traffic lamp according to claim 5 is characterized in that: described controller links to each other with one group of serial data communications busses at least, and every group of serial data communications busses links to each other with at least one traffic control light.
7. according to each described intelligent traffic lamp among the claim 1-6, it is characterized in that: described communication module comprises
Bus interface: be the interface between communication control module and the physical bus, finish the physical layer function of ISO OSI Reference Model;
Communication control module: be used to realize the second layer link layer functionality of ISO OSI interconnection reference model, comprise logic link control module and media interviews control module.
8. according to each described intelligent traffic lamp among the claim 1-6, it is characterized in that: described processor is a CPLD.
9. according to each described intelligent traffic lamp among the claim 1-6, it is characterized in that: described processor is a field programmable logic device.
10. according to each described intelligent traffic lamp among the claim 1-6, it is characterized in that: described processor is a microprocessor.
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| CN 201010260133 CN101916512A (en) | 2010-08-20 | 2010-08-20 | Intelligent traffic signal lamp |
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| CN 201010260133 CN101916512A (en) | 2010-08-20 | 2010-08-20 | Intelligent traffic signal lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986364A (en) * | 2010-09-02 | 2011-03-16 | 南京宏控科技有限公司 | Road traffic signal control machine |
| CN102243810A (en) * | 2010-12-31 | 2011-11-16 | 上海市航头学校 | Infrared probe traffic light |
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| CN2630966Y (en) * | 2003-07-02 | 2004-08-04 | 许明荣 | Traffic signal light with driver |
| CN1920897A (en) * | 2006-09-15 | 2007-02-28 | 中控科技集团有限公司 | Signal controlling machine and signal controlling system |
| CN201111731Y (en) * | 2007-10-23 | 2008-09-10 | 上海大三和弦城市环境艺术有限公司 | Traffic indicating lamp |
| CN201232908Y (en) * | 2008-07-04 | 2009-05-06 | 上海大学 | Integration traffic light and control system thereof |
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2010
- 2010-08-20 CN CN 201010260133 patent/CN101916512A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2630966Y (en) * | 2003-07-02 | 2004-08-04 | 许明荣 | Traffic signal light with driver |
| CN1920897A (en) * | 2006-09-15 | 2007-02-28 | 中控科技集团有限公司 | Signal controlling machine and signal controlling system |
| CN201111731Y (en) * | 2007-10-23 | 2008-09-10 | 上海大三和弦城市环境艺术有限公司 | Traffic indicating lamp |
| CN201232908Y (en) * | 2008-07-04 | 2009-05-06 | 上海大学 | Integration traffic light and control system thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986364A (en) * | 2010-09-02 | 2011-03-16 | 南京宏控科技有限公司 | Road traffic signal control machine |
| CN102243810A (en) * | 2010-12-31 | 2011-11-16 | 上海市航头学校 | Infrared probe traffic light |
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Application publication date: 20101215 |