EP0137964A2 - Dispositif pour la fiabilité du signal dans les agencements de feu de signalisation - Google Patents

Dispositif pour la fiabilité du signal dans les agencements de feu de signalisation Download PDF

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Publication number
EP0137964A2
EP0137964A2 EP84109815A EP84109815A EP0137964A2 EP 0137964 A2 EP0137964 A2 EP 0137964A2 EP 84109815 A EP84109815 A EP 84109815A EP 84109815 A EP84109815 A EP 84109815A EP 0137964 A2 EP0137964 A2 EP 0137964A2
Authority
EP
European Patent Office
Prior art keywords
signal
microprocessor
error
logic
assigned
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.)
Withdrawn
Application number
EP84109815A
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German (de)
English (en)
Other versions
EP0137964A3 (fr
Inventor
Peter Haarmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stuehrenberg Rolf
Original Assignee
Stuehrenberg Rolf
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stuehrenberg Rolf filed Critical Stuehrenberg Rolf
Publication of EP0137964A2 publication Critical patent/EP0137964A2/fr
Publication of EP0137964A3 publication Critical patent/EP0137964A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/097—Supervising of traffic control systems, e.g. by giving an alarm if two crossing streets have green light simultaneously

Definitions

  • the invention relates to a device for securing signals in traffic light systems, with sensors associated with the lamps of the individual signal transmitters and a logic which receives the measurement signals of the transmitter for immediately switching off the traffic light system when an error occurs.
  • a device for signal protection comprises a number of transducers which are assigned to the individual lamps of the traffic light system and which sense their respective status. Usually the current flowing through the lamp is scanned for the red lamps and the voltage level applied to the lamp is scanned for the yellow and green lamps.
  • the transducers are connected to a wired logic which, in the event of an error, supplies an error signal to the control of the traffic light system.
  • the wiring this logic is adapted to the particular circumstances of the traffic light system in question. This has the disadvantage that the logic must be re-wired each time a new traffic light system is installed or an existing system is expanded or changed.
  • the invention has for its object to provide a device for signal protection, in which the wiring of the logic is independent of the particular type of light signal system.
  • the logic is a microprocessor which is connected to the sensors via an address bus and a data bus.
  • the measurement data of the sensors are queried serially by the microprocessor and transmitted via the common data bus. Since the transmitter periodically polls and processes the measurement data in rapid succession, the measurement data is monitored quasi-continuously so that a possible error can be recognized immediately.
  • the wiring of the data bus and the address bus is the same for all types of traffic light systems, and the adaptation to the particular characteristics of the traffic light system is carried out via the user programming of the microprocessor.
  • the lamp switches of each signal transmitter are preferably assigned a specific slot on a circuit board which accommodates the signal protection logic, and each slot is assigned a specific address, so that the microprocessor can query the signal image of each individual signal transmitter by calling up the corresponding address.
  • the single figure shows a block diagram of a device for signal protection according to the invention.
  • a microprocessor 10 is connected to a number of signal generator control units 16 via a data bus 12 and an address bus 14.
  • Each of the control units 16 comprises a lamp switch, which is controlled by a controller (not shown) and which switches the red, yellow and green lamps 18 of the relevant signal transmitter, and sensors which sense the respective state of the lamps 18.
  • the voltage supply for the red and green lamps takes place via lines 20, 22 and the voltage supply for the yellow lamps via line 24 and line 22.
  • a relay 26 is provided in line 20 for the red and green lamps which is controlled by an output of the microprocessor 10.
  • Another output of the microprocessor 10 is connected to an error display 28.
  • Each of the control units 16 is assigned the address of this slot (slot address) by being plugged into a specific slot on a circuit board.
  • the microprocessor 10 includes a central processing unit, an electrically programmable read-only memory (EPROM) and a random access memory (RAM). A basic program and the respective user data are stored in the read-only memory.
  • the RAM memory is used to store intermediate results obtained during data processing in the central processing unit.
  • the microprocessor 10 When the microprocessor 10 is activated by a signal from the control of the traffic light system, it successively calls up the measurement data from the sensors of the individual control units 16 and checks according to the user program whether there is a lamp or locking error. The values of a specific control unit are sampled by calling up their address via the address bus. The control unit then first reports its address back to the microprocessor via the data bus. In this way it can be scanned whether the slot accessed is actually occupied. If there is no feedback, the microprocessor generates an error signal.
  • Each control unit has a selection logic, which uses a binary signal generated by the microprocessor to decide whether the slot address or the measurement data are transmitted via the data bus.
  • the polling cycle begins again. As long as no error is detected, the microprocessor 10 generates a square-wave signal with a frequency of 100 Hz at its output connected to the relay 26. If the microprocessor 10 detects an error, the 100 Hz signal is interrupted.
  • An evaluation circuit not shown, for example. comprising a monoflop, filter capacitors and a rectifier, keeps relay 26 closed as long as the 100 Hz signal is present. Does the signal fail or give way to the Frequency up or down by a certain amount from the value 100 Hz, the relay 26 drops, and all red and green lamps are switched off.
  • a signal with a predetermined frequency (100 Hz) as an error signal has the advantage over the use of a logic signal that the error message is also reliable if, for example, the output of the microprocessor is kept at logic H or L due to a short circuit. Only AC voltages are also transmitted from the lamp switches. If there is no AC voltage at the lamp switch, the relay 26 is also switched off.
  • the microprocessor 10 detects an error, in addition to the signal to the relay 26, a signal is sent to the error display 28, which indicates to the monitoring personnel what type of error it is. At the same time, a signal is supplied to the control of the traffic light system, which then controls the yellow lamps via line 24 in such a way that a yellow flashing warning light is generated on the streets that are not authorized to drive up.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Alarm Systems (AREA)
EP84109815A 1983-10-17 1984-08-17 Dispositif pour la fiabilité du signal dans les agencements de feu de signalisation Withdrawn EP0137964A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833337700 DE3337700A1 (de) 1983-10-17 1983-10-17 Vorrichtung zur signalsicherung bei lichtzeichenanlagen
DE3337700 1983-10-17

Publications (2)

Publication Number Publication Date
EP0137964A2 true EP0137964A2 (fr) 1985-04-24
EP0137964A3 EP0137964A3 (fr) 1987-09-23

Family

ID=6212043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109815A Withdrawn EP0137964A3 (fr) 1983-10-17 1984-08-17 Dispositif pour la fiabilité du signal dans les agencements de feu de signalisation

Country Status (2)

Country Link
EP (1) EP0137964A3 (fr)
DE (1) DE3337700A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647932A1 (fr) * 1989-06-02 1990-12-07 Forclum Force Lumiere Elect Dispositif de telesurveillance de feux de carrefour et procede de mise en service d'un tel dispositif
EP0330164A3 (fr) * 1988-02-25 1991-09-25 Siemens Aktiengesellschaft Dispositif de mise hors circuit partielle d'un système de signalisation routière
EP0942401A3 (fr) * 1998-03-13 2000-08-30 Siemens Aktiengesellschaft Méthode et dispositif pour la fiabilité du signal dans les agencements de feu de signalisation
CN108417073A (zh) * 2018-05-18 2018-08-17 上海会为智能技术有限公司 一种信号灯运行状态显示方法、装置、设备和介质

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3541549A1 (de) * 1985-11-25 1987-05-27 Stuehrenberg Rolf Verfahren und vorrichtung zur signalsicherung in lichtzeichenanlagen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833761C3 (de) * 1978-08-01 1981-12-03 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Überwachung des Zustands von Signalanlagen, insbesondere von Straßenverkehrs-Lichtsignalanlagen
DE2951932C2 (de) * 1979-12-21 1983-08-18 Siemens AG, 1000 Berlin und 8000 München Einrichtung zur signaltechnisch sicheren Steuerung und Überwachung
DE3206345A1 (de) * 1982-02-22 1983-09-01 Siemens AG, 1000 Berlin und 8000 München Lichtsignalanlage, insbesondere verkehrssignalanlage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0330164A3 (fr) * 1988-02-25 1991-09-25 Siemens Aktiengesellschaft Dispositif de mise hors circuit partielle d'un système de signalisation routière
FR2647932A1 (fr) * 1989-06-02 1990-12-07 Forclum Force Lumiere Elect Dispositif de telesurveillance de feux de carrefour et procede de mise en service d'un tel dispositif
EP0942401A3 (fr) * 1998-03-13 2000-08-30 Siemens Aktiengesellschaft Méthode et dispositif pour la fiabilité du signal dans les agencements de feu de signalisation
CN108417073A (zh) * 2018-05-18 2018-08-17 上海会为智能技术有限公司 一种信号灯运行状态显示方法、装置、设备和介质

Also Published As

Publication number Publication date
DE3337700A1 (de) 1985-05-02
EP0137964A3 (fr) 1987-09-23

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