EP1730610A2 - Zweidrahtlichtschranke sowie damit versehener gebäude-oder geländeabschluss - Google Patents
Zweidrahtlichtschranke sowie damit versehener gebäude-oder geländeabschlussInfo
- Publication number
- EP1730610A2 EP1730610A2 EP05735014A EP05735014A EP1730610A2 EP 1730610 A2 EP1730610 A2 EP 1730610A2 EP 05735014 A EP05735014 A EP 05735014A EP 05735014 A EP05735014 A EP 05735014A EP 1730610 A2 EP1730610 A2 EP 1730610A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- light barrier
- receiver
- transmitter
- light
- 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- Withdrawn
Links
- 230000004888 barrier function Effects 0.000 title claims abstract description 74
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000011156 evaluation Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 description 9
- 239000000872 buffer Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000023077 detection of light stimulus Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- FIKAKWIAUPDISJ-UHFFFAOYSA-L paraquat dichloride Chemical compound [Cl-].[Cl-].C1=C[N+](C)=CC=C1C1=CC=[N+](C)C=C1 FIKAKWIAUPDISJ-UHFFFAOYSA-L 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/42—Detection using safety edges
- E05F15/43—Detection using safety edges responsive to disruption of energy beams, e.g. light or sound
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/42—Detection using safety edges
- E05F15/43—Detection using safety edges responsive to disruption of energy beams, e.g. light or sound
- E05F2015/434—Detection using safety edges responsive to disruption of energy beams, e.g. light or sound with cameras or optical sensors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/42—Detection using safety edges
- E05F2015/487—Fault detection of safety edges
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/10—Electronic control
- E05Y2400/45—Control modes
- E05Y2400/452—Control modes for saving energy, e.g. sleep or wake-up
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/61—Power supply
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/80—User interfaces
- E05Y2400/81—Feedback to user, e.g. tactile
- E05Y2400/818—Visual
- E05Y2400/822—Light emitters, e.g. light emitting diodes [LED]
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24135—Use of infra red for optical limit switch against day light
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25354—Power or secondary control signal derived from received signal
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2628—Door, window
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37286—Photoelectric sensor with reflection, emits and receives modulated light
Definitions
- the invention relates to a light barrier for monitoring the movement of a closure for a site or a building, in particular for a door operator, with a transmitter and a receiver, the transmitter being designed to transmit an oscillating light beam to the receiver.
- the invention relates to a drive provided with it for a movable building or terrain closure, such as in particular a door drive, and to a terrain or building closure, such as a gate or barrier, which can be monitored by the light barrier.
- light barriers are used in particular to monitor the closing movement of the gate. This is to prevent objects or people who are in the path of movement from being pinched by the gate.
- the light barrier is therefore a safety-relevant part.
- their light mostly shines in the invisible area, so that the functioning or non-functioning of a light barrier cannot usually be perceived by an operator.
- Previous light barriers are therefore usually provided with test devices, which increases the effort in manufacture and assembly.
- both the transmitter and the receiver have a proper current and voltage supply.
- the transmitter is also connected to a test output and the receiver to a test output.
- there is the normal signal line that sends the signal “light path free” or “light path interrupted” to a control system with an evaluation device. If the drive test procedure to be carried out, the transmitter is supplied with a test signal via the test output, whereupon the transmitter emits a light beam. The receiver must then receive the light beam and emit a corresponding signal on the signal line. Then the controller knows that all components of the light barrier are working properly.
- Both the transmitter and the receiver are provided with a connection for the power supply, a connection for a command or receive signal, a test connection and with ground; overall, both the transmitter and the receiver must be connected via 4 wires. This is tedious and can lead to incorrect switching, especially since gates and their drives are usually installed by metalworkers who do not like delicate electrical connection work.
- the large number of wires to be connected is particularly disadvantageous if the transmitter and the receiver are to be arranged on the door leaf.
- the door drive control is usually attached in a stationary manner, so that either additional control boards or similar control units have to be installed on the door leaf while traveling, or a large number of wires have to be guided from the movable door leaf to the immobile control.
- the transmitter is connected to a receiver unit with only two wires.
- This receiver unit has a frequency generator that sends a pulse train with a certain frequency as the operating voltage to the transmitter. Because of this, the transmitter sends the light beam with the specific frequency.
- the frequency generator feeding the transmitter is also connected to the receiver via a synchronization circuit. Only when the receiver receives a signal in synchronism with the pulse train of the frequency generator, is it assumed that the light path is clear and that all components are working properly. Light pulses that the receiver does not receive in synchronism with the pulse sequence of the frequency generator are ignored.
- the light barrier should work safely undisturbed by noise effects.
- the known light barrier works with logic elements, in particular with an ASIC or a microcontroller. All of this is laborious to manufacture and very cost-intensive, especially for small quantities.
- the complicated electronics are used to avoid errors, but like any complicated system, they themselves can contain hidden errors.
- the object of the invention is to construct a light barrier of the type mentioned in the preamble of claim 1 in such a way that it delivers a high degree of functional reliability with low configuration, manufacturing and assembly costs, with little wiring effort.
- the light barrier according to the invention serves to monitor the movement of a closure for a site or building, is intended in particular for a door operator and is provided with a transmitter and a receiver.
- the transmitter is designed to send an oscillating light beam to the receiver.
- the receiver receives such an oscillating signal more or less exactly, it can be assumed that a) the light path is clear and b) the transmitter and receiver are working properly. A test procedure is therefore unnecessary, and with it the effort for test connections.
- the transmitter and the receiver are connected in parallel to a common supply voltage.
- this further reduces the wiring effort.
- the connection to the common supply voltage line is made in such a way that the receiver, upon receipt of the oscillating light beam, imposes a supply signal on the supply voltage that oscillates correspondingly to the light beam.
- the supply voltage line is also used as a signal line.
- the transmitter is also supplied with a correspondingly oscillating operating voltage. It is therefore much easier to set up the electronics of the transmitter and receiver using standard components in a simple circuit. As a result, the costs for project planning and production are very low.
- the very simple structure also helps to avoid errors in hardware or software and / or to discover and eliminate them at an early stage.
- the common operating voltage is then preferably formed from the constant supply voltage and the voltage generated by the oscillating signal imposed by the receiver.
- This signal for example, correspondingly amplified by an amplifier, has opposite polarity to the supply voltage, so that the signal pulses reduce the supply voltage in each case.
- a direct parallel connection is preferred. This means that you can also set up a light barrier that generates an oscillating light signal without a frequency generator.
- the receiver has a lower electrical resistance than if the light beam was not received and that the resulting change in voltage on a connecting line that conducts the supply voltage to the light barrier can be detected as a light barrier signal and the transmitter is designed in such a way that if the Operating voltage reduces the emitted light output or stops the light emission, the parallel connected components of the light barrier form a resonant circuit that starts to oscillate independently when the light path is clear.
- the transmitter has a first frequency oscillator for generating an oscillating voltage with a first frequency and a light emitter fed by the oscillating voltage. The system only works properly and the light path is clear only if the receiver also feeds this frequency back to the operating voltage.
- the first frequency oscillator generates a pulse voltage toggling between a high value and a low value with the first frequency
- the transmitter has a second frequency oscillator connected to the output of the first frequency oscillator, which when either is high or a low value of the pulse voltage with a second frequency, which is preferably at least 5 times as large as the first frequency, generates an oscillating voltage and gives the light emitter to transmit a correspondingly modulated light signal, and / or that the receiver uses a frequency demodulator to demodulate the second frequency.
- a control unit is then preferably provided on the drive, which has the voltage supply and an evaluation unit.
- connection cables only need to have two wires each, namely one wire for the operating voltage and one wire for ground. Alternatively, it is even sufficient that the connection cables each have only one wire for the operating voltage if the ground connection is made via a conductive environment of the light barrier.
- the light barrier is preferably used as part of a drive device for a building or site closure, in particular a door drive, which is driven by a control device for controlling and monitoring the building or site closure, in particular for controlling and monitoring the movement of the building or site closure, is provided, or as part of a building or site closure at all.
- FIG. 1 shows a block diagram of a first embodiment of a light barrier for use in connection with drives for gates, doors, barriers or the like;
- FIG. 2 shows a diagram of the operating voltage Ua taken off at an input terminal of the light barrier over time t with a clear light path
- FIG. 3 shows a diagram as in FIG. 2 with an interrupted light path
- FIG. 4 shows a schematic rear view of a door driven by a door drive as an example of a building or terrain closure, provided with the light barrier according to FIG. 1;
- 5 shows a block diagram of a second embodiment of a light barrier
- 6 shows a diagram of the operating voltage U1 of the light barrier from FIG. 5 plotted against time t with a clear light path
- Fig. 7 shows the diagram of Fig. 6 with an interrupted light path.
- the light barrier 10 described below is specially designed to detect obstacles in the course of the movement of driven building or site closures such as gates, barriers, doors or the like. It can be fixed or attached to a movable element of the closure.
- the light barrier 10 is characterized by a transmitter TX at one end of the light path and a receiver RX at the other end of the light path (so-called one-way light barrier) and only two connecting wires for the transmitter and receiver with nevertheless reliable detection of light path interruptions and disturbances of any kind.
- a first embodiment of the light barrier, generally designated 10, is shown in FIGS. 1 to 3
- a second embodiment is shown in FIGS. 5 to 7.
- FIG. 4 shows the use of the light barrier 10 valid for both exemplary embodiments in connection with a door with a door operator.
- the light barrier 10 has a transmitter TX and a receiver RX and a control unit 12. Only two connecting wires 14 and 15 ensure the voltage supply and also the information line to and from the transmitter TX and receiver RX.
- This light barrier 10 is therefore also referred to as a two-wire one-way light barrier.
- the most important information to guide is whether the light path is free or interrupted. Other information to be sent to the control unit is malfunctions such as an interruption in a connection or failure of the transmitter or receiver.
- the control unit 12 can, for example, be integrated in a controller 16 for a door drive 17.
- the control unit 12 provides the supply voltage U + (DC voltage), for example approximately 5 to 35 volts, for the light barrier 10.
- U + DC voltage
- the function of the light barrier 10 is ensured by the two connecting wires 14, 15.
- the control unit 12 (for example on the drive 17) evaluates the information “light path free” or “light path interrupted” of the one-way light barrier.
- the control unit 12 detects a defective connecting cable, e.g. B. in the event of a short circuit or cable break. Defective transmitters TX or receivers RX are also recognized by the control unit 12.
- the first embodiment of the light barrier 10 is explained in more detail below with reference to FIGS. 1 to 3. As can be seen in FIG.
- a voltage source is provided, in particular in the control unit 12, for supplying the direct voltage U + used as the supply voltage.
- This is connected via a resistor R to a node a, to which in turn connections 21 and 22 for connecting the connecting wires 14, 15 are connected.
- the operating voltage Ua can also be tapped at the node a.
- Transmitter TX and receiver RX are connected in parallel to the same power supply, in the example here connected to Plus +.
- the minus connections of transmitter TX and receiver RX go to ground 21; however, this can also be done in a manner not shown via a second strand of the connecting wires 14, 15.
- this circuit is now as follows: If the transmitter TX is now supplied with current via the node a, it sends out a light beam 22 to the receiver RX. When the receiver RX receives the light beam 22, its electrical resistance becomes low. As a result, he short-circuits the circuit (between node a and ground 21). Therefore, the transmitter TX is no longer supplied with power, the light beam 22 is interrupted. However, if the receiver RX no longer receives a light beam 22, its electrical resistance becomes very high again; the short circuit between node a and ground 21 is removed again. As a result, the transmitter TX is supplied with power again. This results in an oscillating voltage, which in the example can be tapped at node a for evaluation and is shown purely schematically in FIG.
- a constant voltage Ua is established, as indicated in FIG. 3.
- FIG. 4 shows a door 30 with a movable door leaf 31 as an example of use.
- a drive in the form of the door drive 17 is provided for moving the door leaf.
- This has a motor M, which here loads the door leaf 31 via a door shaft 33 and traction means 34. moves, and the controller 16, for controlling the motor M.
- the opening 35 to be closed by the door leaf 31 is monitored by the light barrier 10.
- the transmitter TX and the receiver RX are fixed to the left and right of the opening 35.
- the transmitter TX and receiver RX are arranged to move on the door leaf 31, in particular for securing the closing edge 32.
- the control unit 12 switches on the supply voltage U + and checks whether the oscillating signal Ua (or In the case of the second version, as explained below). The requested door movement is only initiated when this oscillating signal is detected.
- the control unit 12 constantly monitors the presence of the oscillating signal Ua (or Ue). If instead a constant tension is established as in FIG. 3 (or FIG. 7) or the tension is interrupted, the movement is immediately interrupted or reversed.
- 5 shows the structure of transmitter TX, receiver RX and control unit 12 as a block diagram.
- the transmitter TX has a rectifier and / or buffer 40 connected to the connecting wire 14, the output of which is connected to the input of a first frequency generator 41. Its output is in turn connected to the input of a second frequency generator 42.
- An infrared transmitter unit 43 and a function display device 44 are connected to the second frequency generator 42.
- the receiver RX At its connection for the connecting wire 15, the receiver RX likewise has a rectifier and / or buffer 50 which supplies the units of the receiver RX with a rectified, smoothed operating voltage.
- An amplifier 51, a frequency demodulator 52, a receiving unit 53 and a display device 54 are also provided.
- the control unit 12 has a voltage supply 60, to which the two connecting wires 14, 15 are connected, and an evaluation device 61.
- the function of the light barrier 10 according to the second embodiment is as follows.
- the operating voltage is rectified and smoothed in the rectifier / buffer 40.
- the first frequency generator 41 pulses with a duration of t ⁇ i n are generated with a first, smaller frequency f1, for example from 10 to 1000 Hz or more, preferably approximately 200 Hz.
- a second, higher frequency f2 is generated in the second frequency generator, which is preferably at least 5-10 times greater than the first frequency f1.
- f2 is in the range above 10 kHz and is for example 36-40 kHz.
- the second frequency f2 is the transmission frequency that is transmitted by the transmission unit 43 as a light beam 22, preferably with infrared light.
- the function display device 44 indicates that the transmission unit 43 is transmitting the frequency f2.
- This display device 44 is formed, for example, by an LED, for example a green LED, which lights up when frequency f2 is present.
- the operating voltage is rectified and smoothed in the rectifier / buffer 50.
- the receiving unit 53 the light beam 22 is received and demodulated with the transmission frequency f2.
- the demodulated signal is the pulse sequence with the frequency f1 from the transmitter TX, that is to say for example at 200 Hz and with a ratio of t e T of 1/10. In this example, t would be an approximately 0.5 ms.
- This pulse sequence with t e i n is generated on the connecting wire 15 via the amplifier of the operating voltage U 1.
- the display device 54 indicates when the frequency f1 (eg 200 Hz) is not received.
- This display device 54 is formed, for example, by an LED, preferably in a different color than the LED of the function display device 44, for example by a red LED.
- Response of the display device 54 means non-reception of the frequency f1. This can be caused by an interruption of the light beam 22, by a malfunction of the transmitter TX or by a malfunction of the receiving unit 53.
- a short-circuit-proof operating voltage U1 is applied to the connecting wires 14, 15.
- the through the voltage supply 60 The DC voltage supply voltage U + made available by the amplifier 51 subtracts the pulse voltage at the frequency f1, so that the operating voltage thereof of the two-wire through-beam sensor 10 has a frequency of f1 in “normal operation” with a free light path.
- This oscillating voltagehos is for the normal operation (light path "free") shown in Fig. 6.
- the ratio of WT is equal to t e ⁇ n / T, for example t
- 0W / T 1/10.
- 0W corresponds to t e j n , for example 0.5 ms.
- the control unit 12 provides the supply voltage and evaluates the t
- 0W is therefore imposed on the supply voltage.
- the difference formed from the light barrier signal and the supply voltage serves as the operating voltageplan for the transmitter and receiver.
- the rectifiers / buffers 40, 50 ensure that the electronics units of the transmitter TX and receiver RX are nevertheless supplied with an essentially constant voltage and run trouble-free.
- a requested door movement is only permitted if the frequency f1 is present on the operating voltage U1. If the light path is interrupted, a constant voltage U1 is shown in Fig. 7. In this case, the control unit blocks a requested door movement or interrupts and / or reverses an already started door movement.
- the function of the light barrier 10 is ensured without polarity via the connecting wires 14, 15. Both embodiments are very easy to connect. The wiring effort is significantly reduced without any restrictions on the operational safety of the driven building or terrain termination provided with the light barrier 10. LIST OF REFERENCE NUMBERS
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Geophysics And Detection Of Objects (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420005113 DE202004005113U1 (de) | 2004-03-31 | 2004-03-31 | Zweidrahtlichtschranke sowie damit versehener Gebäude- oder Geländeabschluss |
PCT/DE2005/000451 WO2005096111A2 (de) | 2004-03-31 | 2005-03-11 | Zweidrahtlichtschranke sowie damit versehener gebäude-oder geländeabschluss |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1730610A2 true EP1730610A2 (de) | 2006-12-13 |
Family
ID=34854246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05735014A Withdrawn EP1730610A2 (de) | 2004-03-31 | 2005-03-11 | Zweidrahtlichtschranke sowie damit versehener gebäude-oder geländeabschluss |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1730610A2 (de) |
DE (2) | DE202004005113U1 (de) |
WO (1) | WO2005096111A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005052518A1 (de) | 2005-07-15 | 2007-01-18 | Hörmann KG Antriebstechnik | Motorisch angetriebenes Tor sowie Torantriebsvorrichtung, Kommunikationseinrichtung und Signalübermittlungsverfahren hierfür |
DE202006003313U1 (de) | 2005-11-30 | 2007-04-05 | Hörmann KG Antriebstechnik | Lichtschrankengehäuse, Lichtschrankenelement und Torvorrichtungen |
DE102006009713A1 (de) | 2005-11-30 | 2007-06-06 | Hörmann KG Antriebstechnik | Haltevorrichtung für eine Lichtschranke sowie Verwendung derselben |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5428923A (en) * | 1991-02-25 | 1995-07-04 | Gmi Holdings, Inc. | Fail safe obstruction detector for door operators and door operator system incorporating such detector |
US6020703A (en) * | 1997-06-30 | 2000-02-01 | Telmet; Juhan | Garage door opener |
-
2004
- 2004-03-31 DE DE200420005113 patent/DE202004005113U1/de not_active Expired - Lifetime
-
2005
- 2005-03-11 DE DE112005001287T patent/DE112005001287A5/de not_active Withdrawn
- 2005-03-11 EP EP05735014A patent/EP1730610A2/de not_active Withdrawn
- 2005-03-11 WO PCT/DE2005/000451 patent/WO2005096111A2/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2005096111A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005096111A2 (de) | 2005-10-13 |
WO2005096111A3 (de) | 2006-07-27 |
DE202004005113U1 (de) | 2005-08-11 |
DE112005001287A5 (de) | 2007-05-24 |
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