EP1902437A1 - LICHTSIGNALANLAGE, INSBESONDERE FÜR DEN STRAßENVERKEHR - Google Patents
LICHTSIGNALANLAGE, INSBESONDERE FÜR DEN STRAßENVERKEHRInfo
- Publication number
- EP1902437A1 EP1902437A1 EP06764037A EP06764037A EP1902437A1 EP 1902437 A1 EP1902437 A1 EP 1902437A1 EP 06764037 A EP06764037 A EP 06764037A EP 06764037 A EP06764037 A EP 06764037A EP 1902437 A1 EP1902437 A1 EP 1902437A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- traffic
- light
- control unit
- emitting diodes
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/52—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a parallel array of LEDs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/54—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a series array of LEDs
Definitions
- Traffic signal system in particular for road traffic
- the invention relates to a traffic signal system, in particular ⁇ special for road traffic, according to the preamble of claim 1.
- Traffic light systems are mainly used in traffic engineering for traffic control and regulation.
- Signalers which are intended to emit traffic signals for road users, are known from airports, railway traffic and, above all, road traffic.
- the competing traffic streams crossing one node of the road network which can be formed by motor vehicles, rail vehicles, cyclists and pedestrians, are controlled by a plurality of signalers.
- the signal transmitters are connected to a control unit, by which they are controlled according to a signal program running in the control unit.
- incandescent lamps to light emitting diodes
- a typical error is the unwanted absence of a blocking signal, for example, a red light at ei ⁇ ner traffic light.
- Conventional control units used incandescent lamps with the electrical power supply as a reliable indicator of sufficient light generation in the filament.
- the power of the incandescent lamps of Minim ⁇ ensures least 20 W for an electric current that can be monitored reliably and in an extended light signals with underground cabling by the circuit means in the control unit.
- Release signal for example, the green light ei ⁇ ner intersection.
- a conventional control unit monitors to detect this type of error, the signal line on exceeding a voltage of about 60 V at a nominal value of 230 V and assumes when falling below this limit that the bulb is not lit.
- the incandescent lamp absorbs noticeable energy even at 60 V, it hardly emits light in the visible spectral range.
- signalers with LEDs on the other hand, it must be expected that even a very small amount of energy will be used to light up a
- LED especially at night, leads.
- light-emitting diodes can be replaced by capacitive Couplings in the line network of the signal generator are brought to light.
- the driver circuit that is to say the energy converter
- the driver circuit can be equipped with an additional monitoring circuit which burns a special fuse in the case of faulty electrical operating values of the light-emitting diodes; With this so-called end-of-life circuit, the current consumption of the signal generator is interrupted in the same way as the breaking of a light bulb.
- any additional monitoring circuit again is a potential source of error in itself and that the operational readiness ei ⁇ ner end-of-life monitoring circuit during normal operation of the signal generator can not be tested.
- Another solution provides for a reduction of the operating voltage - about 40 V instead of 230 V - in order to raise the LED currents to be monitored back to a well-monitored level.
- this method will reach its limits under the operating conditions of a control unit, since the technological trend in light-emitting diodes is leading to ever lower energy consumption.
- ⁇ traffic detectors can be connected via 80 Ver.
- a central circuit device is provided which consists of lamp switches for each of eight signal groups of signal transmitters.
- a two-channel design is selected, whereby the occurrence of hazardous signaling states is monitored and contradictory signaling states and defective lamps are reported.
- shut-off means in the ⁇ ser condition has occurred.
- 12 to 18 power LEDs are available as the central light source.
- the electrical interface to the controller forms a current-monitored driver ⁇ circuit with energy converter and end-of-life backup.
- An LED signal generator has a housing with integrated cooling plate, in which an LED board and its energy supply, an energy converter are arranged.
- the housing is closed at the front by an optical lens and a front lens.
- Each signal transmitter is connected separately from its central lamp switch in the control unit with up to 250 m long 230 V underground cables as a power supply line, which are exposed to considerable electrical interference.
- the invention is therefore based on the object, a light ⁇ signal system to provide the aforementioned type, the despite using signalers with LEDs as fail-safe and easy to set up.
- the stated object is achieved by a generic traffic signal system in which a circuit device arranged in its immediate vicinity is provided per signal transmitter and in which the signal transmitters are connected to the control unit via a wiring harness having the power supply lines and the data transmission lines.
- a wiring harness having the power supply lines and the data transmission lines.
- the circuit in addition with ⁇ stuffs for driving the light-emitting diodes and means for converting the light-emitting diodes supplied energy, and means to monitor the current and / or voltage to the light-emitting diodes, which are formed as a common module.
- the functions of the hitherto centrally arranged circuit devices and the driver circuit are fused in the signal generator, which advantageously avoids the multiple execution and concatenation of circuits for current and voltage monitoring.
- This makes the whole concept easier and easier to certify in terms of safety.
- the end-of-life circuit previously used in the driver can be completely eliminated. In practical operation, this increases availability and safety, while the manufacturing costs decrease due to the lower circuit complexity.
- the driving means of the circuit arranged to control the signal outputs according to set ⁇ specifications of the signal control there are means of evaluation of the circuit means are adapted to redundant Be ⁇ operating parameters and carry out functional tests, and there are means of communication of the scarf ⁇ processing device designed to control, measuring and Zu - Exchange state data via a logical, secure data connection with the control unit. Controls through specific function ⁇ and a coordinated task sharing er réelle with the tax is achieved with economic cost a fail-safe execution.
- the drive means are triggered by a logical command for the modulation of the pulse width
- the circuit device is designed for a plurality of signal outputs.
- several signal outputs can advantageously share the necessary core components, such as serial interface, microcontroller, energy converter.
- the ratio of net ⁇ to gross data so Date and preamble, header, CRC, cheaper.
- means for directly measuring the electrical operating parameters of the light-emitting diodes are provided for monitoring the signal states.
- the electrical operating parameters are the current and voltage during operation of the diodes.
- means are provided for detecting the light emitted by the light-emitting diodes, which are designed to carry out tests in the switched-on and / or switched-off state of the light-emitting diodes.
- Kings ⁇ nen be provided when it is switched off phases short while when switched off briefly one emitting in the infrared LED is activated.
- the data transmission between see control unit and signal generator via a 230 V power cable Since frequently already uses 230 V cable for data transfer be ⁇ , no new data cables must be installed, which would entail costly and often recountbehindernden civil engineering work. As a result, the known use of a coaxial cable is avoided, which was associated with correspondingly expensive connection assemblies.
- a common signal line is provided for the energy supply and the data transmission between the signal generator and the control device.
- a matched to the application of the control unit Powerline Communication (PLC short) is particularly suitable to ensure ei ⁇ ne reliable and powerful data transmission in the entire area of the traffic signal system on existing power cables.
- PLC technology tolerates a network with technical problem areas such as unfinished lines, spur lines or branches.
- the signal lines are used for energy and data transmission.
- the number of connection points is particularly low.
- a traffic detector arranged close to it can be connected to the signal transmitter, wherein traffic data detected by the traffic detector can be transmitted via the circuit devices to the control device. More and more frequently, for example, overhead arranged Ver ⁇ traffic detectors are used, which are mounted in the area of the signal transmitter of a light signal system. In the pre suggest ⁇ nen technology for no additional cables are needed, but the detector outputs can be acquired processing facilities and transferred from there to the control unit via special inputs of the scarf ⁇ .
- the traffic signal system according to the invention for traffic control at a junction of the road traffic network comprises a plurality of signal transmitters 10, one of which is shown by way of example, a traffic detector 20 which can be arranged overhead on a signal mast, the signal transmitters 10 according to the invention via one, possibly a single, Wiring harness 30 are connected to a controller 40.
- a signal generator 10 has at least one light emitting diode 11 for emitting a light signal - such as green, yellow or red light - which can be controlled by a arranged in or on the signal generator 10 circuit device.
- the length of the line 30 is shortened, which in particular in the critical line part to a drastic reduction of all disturbances on the voltages and currents of the LED signal leads.
- the circuit device in the signal transmitter 10 implements a simple and easily certifiable safety concept, in which the functions of the lamp switches previously arranged centrally in the control unit 40 and the driver circuits arranged in the signal generators 10 are merged.
- a circuit device comprises an energy converter 12 for the light emitting diodes 11, which is connected to the power supply lines 31 of the wiring harness 30.
- the control means 13 of the circuit device are triggered by a logical command for pulse width modulation and / or for lowering the amplitude of the light-emitting diodes 11 to be supplied
- each signal generator 10 comprises a serial interface 17, which has a formed as a data bus line connection 32 is connected to a se ⁇ rial interface 45 of the controller 40.
- this light detection means 18 which can be formed for example by a photodiode.
- a short time off the light emitting diodes 11 can be made here, for example during operation.
- a light-emitting diode 19 emitting in the infrared range is provided on the signal generator 10 of the illustrated embodiment, the radiation of which can likewise be detected by the detection means 18 and processed in the evaluation means 14.
- the known indirect inference from the electric diode current to the luminous flux is no longer necessary.
- the luminosity of the signal generator 10 can be monitored regardless of the number and efficiency of the LEDs 11.
- the off ⁇ can output data of the transport detector 20 detects special inputs of the peripheral circuit device, and transferred from there via the wiring harness 30 to the controller 40 the advertising.
- powerline communication For communication between signal generator 10 and controller 40 preferably powerline communication is used. Tuned to the application for control devices 40, this is particularly suitable si ⁇ chercirc on existing power cables reliable and efficient data transmission in the entire area of the controlled by the traffic signal crossing area.
- the PLC technology tolerates line networks with problematic areas of the telecommunications industry, such as unconnected lines, spur lines and branches. If the same signal lines 30 are used for the power supply and the data transmission, the number of connection points can be minimized in a particularly advantageous manner. Alternatively, however, separate signal lines can also be used for the power supply and data transmission. Separate lines increase the transmission quality and compensate for the disadvantage of multiple connection points through savings, since the PLC transmitters are much simpler and the energy converters 12 can be executed without PLC high-frequency filters.
Landscapes
- Traffic Control Systems (AREA)
- Road Signs Or Road Markings (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005032719A DE102005032719A1 (de) | 2005-07-13 | 2005-07-13 | Lichtsignalanlage, insbesondere für den Straßenverkehr |
PCT/EP2006/063833 WO2007006684A1 (de) | 2005-07-13 | 2006-07-04 | LICHTSIGNALANLAGE, INSBESONDERE FÜR DEN STRAßENVERKEHR |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1902437A1 true EP1902437A1 (de) | 2008-03-26 |
EP1902437B1 EP1902437B1 (de) | 2011-03-02 |
Family
ID=37062532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06764037A Not-in-force EP1902437B1 (de) | 2005-07-13 | 2006-07-04 | LICHTSIGNALANLAGE, INSBESONDERE FÜR DEN STRAßENVERKEHR |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1902437B1 (de) |
AT (1) | ATE500583T1 (de) |
DE (2) | DE102005032719A1 (de) |
WO (1) | WO2007006684A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007047847B4 (de) * | 2007-11-22 | 2018-02-22 | Swarco Traffic Systems Gmbh | Verkehrssignalanlage mit Signalgebern und einer Steuereinrichtung zum Steuern von Leuchten in den Signalgebern |
DK2581311T3 (en) | 2011-10-10 | 2014-03-17 | Hella Kgaa Hueck & Co | LED airfield |
DK3165053T3 (en) * | 2014-09-29 | 2019-03-04 | Siemens Mobility GmbH | Apparatus and method for monitoring a light emitter's signal encoder comprising a light emitting diode |
DE102014119623A1 (de) | 2014-12-23 | 2016-06-23 | Pintsch Bamag Antriebs- Und Verkehrstechnik Gmbh | LED-Lichtmodul, Signalleuchte mit einem solchen Lichtmodul sowie Verfahren zum Betreiben eines solchen Lichtmoduls |
CA2929735A1 (en) * | 2015-05-14 | 2016-11-14 | Alstom Transport Technologies | Integrated lamp assembly and method |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2329621A1 (en) * | 1998-04-21 | 1999-10-28 | Siemens Aktiengesellschaft | Lighting installation, for instance, airport or road navigation lights |
FR2780234B1 (fr) * | 1998-06-17 | 2000-09-01 | Colas Sa | Lampe et procede de fonctionnement d'une telle lampe |
EP0974947B1 (de) * | 1998-07-23 | 2004-12-15 | Siemens Aktiengesellschaft | Lichtsignalanlage sowie Verfahren zum Überwachen der Lichtsignalanlage |
ATE313838T1 (de) * | 1998-10-07 | 2006-01-15 | Siemens Ag | Signalgeber sowie damit ausgerüstete verkehrssignalanlage |
DE10012608A1 (de) * | 2000-03-15 | 2001-10-18 | Siemens Ag | Lampenschaltung eines Signalgebers einer Verkehrssignalanlage |
US20050099319A1 (en) * | 2000-08-29 | 2005-05-12 | Hutchison Michael C. | Traffic signal light with integral sensors |
DE10206649A1 (de) * | 2002-02-15 | 2003-08-28 | Garufo Gmbh | Anzeigevorrichtung |
US20040212309A1 (en) * | 2003-01-23 | 2004-10-28 | St-Germain Nicolas | Intelligent LED traffic signals modules |
GB2406977A (en) * | 2003-10-04 | 2005-04-13 | Alstom | Airfield lighting system |
-
2005
- 2005-07-13 DE DE102005032719A patent/DE102005032719A1/de not_active Ceased
-
2006
- 2006-07-04 WO PCT/EP2006/063833 patent/WO2007006684A1/de not_active Application Discontinuation
- 2006-07-04 EP EP06764037A patent/EP1902437B1/de not_active Not-in-force
- 2006-07-04 AT AT06764037T patent/ATE500583T1/de active
- 2006-07-04 DE DE502006009009T patent/DE502006009009D1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007006684A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007006684A1 (de) | 2007-01-18 |
DE502006009009D1 (de) | 2011-04-14 |
EP1902437B1 (de) | 2011-03-02 |
ATE500583T1 (de) | 2011-03-15 |
DE102005032719A1 (de) | 2007-01-25 |
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