DE9006605U1 - Circuit monitoring on movable closing edges - Google Patents
Circuit monitoring on movable closing edgesInfo
- Publication number
- DE9006605U1 DE9006605U1 DE9006605U DE9006605U DE9006605U1 DE 9006605 U1 DE9006605 U1 DE 9006605U1 DE 9006605 U DE9006605 U DE 9006605U DE 9006605 U DE9006605 U DE 9006605U DE 9006605 U1 DE9006605 U1 DE 9006605U1
- Authority
- DE
- Germany
- Prior art keywords
- frequency
- evaluation
- monitoring
- closing edges
- another
- 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 - Lifetime
Links
- 238000012544 monitoring process Methods 0.000 title claims description 9
- 238000011156 evaluation Methods 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000012806 monitoring device Methods 0.000 claims description 4
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
-
- 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
- E05F15/44—Detection using safety edges responsive to changes in electrical conductivity
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to mechanical injury, e.g. rupture of line, breakage of earth connection
-
- 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
- E05Y2900/13—Type of wing
- E05Y2900/132—Doors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
D5. Juni 133&dgr; Ha-MüD5 June 133&dgr; Ha-Mü
Die Erfindung betrifft eine Einrichtung zur Überwachung des Stroaikreises einer Schutzeinrichtung an durch einen Antrieb bewegbaren Schließkanten von insbesondere automatisch betätigbaren miteinander zusammenwirkenden Türen, wobei in den Schließkanten als Druckleisten ausgebildete Elektroden angeordnet sind, die mit einer Versorgungespannung versehen am Endfe elektrisch miteinander verbunden sind.The invention relates to a device for monitoring the current circuit of a protective device on closing edges that can be moved by a drive, in particular on automatically operable doors that interact with one another, whereby electrodes designed as pressure strips are arranged in the closing edges, which are provided with a supply voltage and are electrically connected to one another at the end.
Die gattunggemäße Schutzeinrichtung ist in der US' PS 37 54 176 und eine spezielle Ausführung und Verbesserung dieser Einrichtung in dem deutschen Patent 27 19 438 näher beschrieben.The protective device of this type is described in more detail in US Patent 37 54 176 and a specific design and improvement of this device is described in German Patent 27 19 438.
Eine derartige Schutzeinrichtung weist an einer durch einen Antrieb bewegbaren, Schließkante wenigstens zwei sich über die Länge der Schließkante erstreckende und imSuch a protective device has at least two extending over the length of the closing edge and in the
Abstand voneinander angeordneten eine Schaltleiste bildende Elektroden auf.Electrodes arranged at a distance from each other form a switching strip.
Die Elektroden können gegen elastische Kräfte einander gsnähsirt und in Berührung *s-i vracht tfsrden sowie mit ihren Enden an eine Spannungsquelle und an ein Steuergerät angeschlossen und derart verbunden werden, daß bei Nichtberühren der Elektroden ein Ruhestrom fließt. Das entsprechende Steuergerät löst sowohl beim Anstoßen einer Hindernisses an die Schließkante/! als auch bei einer Unterbrechung der Elektroden ein Steuersignal zum Anhalten oder Reversieren des Antriebes aus, wobei die Elektroden an ihrem einen Ende durch einen Meßwiderstand überbrückt sind und das Steuergerät mit der Spannungsquelle an das andere Ende der Elektroden angelegt ist.The electrodes can be sewn together against elastic forces and brought into contact , and their ends can be connected to a voltage source and to a control unit and connected in such a way that a quiescent current flows when the electrodes are not touching. The corresponding control unit triggers a control signal to stop or reverse the drive when an obstacle hits the closing edge/! or when the electrodes are interrupted, whereby the electrodes are bridged at one end by a measuring resistor and the control unit with the voltage source is connected to the other end of the electrodes.
Die praktische Funktion einer derartigen Schutzeinrichtung wird in nachteiliger Weise dann in Frage gestellt, wenn die in der Anwendung verhältnismäßig langen Anschlußleitungen zwischen Steuergerät und Elektroden, durch Verschleiß und Bruch bedingt, Kriechströme oder Nebenströme zulassen, die einen Wider&tand bilden. Ein solch geschlossener Kreis simuliert unter falschen Bedingungen die Funktionsfähigkeit der Schutzüberwachungseinrichtung und das Steuergerät reagiert nicht auf fälschlich auftretende Berührungen oder Kontakte der sogenannten Schaltleisten.The practical function of such a protective device is called into question in a disadvantageous way if the relatively long connecting cables between the control unit and the electrodes, due to wear and breakage, allow leakage currents or secondary currents that create a resistance. Such a closed circuit simulates the functionality of the protective monitoring device under false conditions and the control unit does not react to incorrectly occurring touches or contacts of the so-called switching strips.
Demgegenüber liegt der Erfindung die Aufgabe zu gründe, eine überwachungseinrichtung zu schaffen, die die oben genannten Fehler aueschließt und die in zuverlässiger Weise eine ständige Selbstüberwachung der Schutzeinrichtung gewährleistet. In contrast, the invention is based on the object of creating a monitoring device that excludes the above-mentioned errors and that reliably ensures constant self-monitoring of the protective device.
mm · · ·— »J "" mm · · · — »J ""
Diese Aufgabe wird erfindungegemäß dadurch gelöst, daß die Druckleisten beidseitig über einen aktiven Abschluß in Form eines Frequenzgenerators, miteinander verbunden sind, und daß zur überwachung der Frequenz eine Auswerteeinheit vorgesehen ist.This object is achieved according to the invention in that the pressure bars are connected to one another on both sides via an active termination in the form of a frequency generator, and in that an evaluation unit is provided for monitoring the frequency.
üer als aktiver Abschluß zu bezeichnende Frequenzgenerator bringt eine ständige Frequenz als Ausgangssignal für die überwachung. Diese Frequenz ist der Versorgungsspannung überlagert und kann in Grenzen nach oben und unten ständig überprüft werden, so daß ein selektives Erkennen möglich ist. Ein Kriech- oder Nebenstrom würde die Frequenz erkennbar ändern oder sogar ausfallen lassen. In jedem Fall ist eine ständige Überwachung der Schutzeinrichtung vorhanden .The frequency generator, which can be described as an active termination, provides a constant frequency as an output signal for monitoring. This frequency is superimposed on the supply voltage and can be constantly checked within upper and lower limits, so that selective detection is possible. A leakage or secondary current would noticeably change the frequency or even cause it to fail. In any case, the protective device is constantly monitored.
Der aktive Abschluß wird innerhalb der Auswerteeinheit über eine Konstantspannungsvereorgung und eine Entkopplung mit einer aufbereiteten Spannung über die Druckleisten vecBÖfyt . D«x? ucäutiytö StjTGiü Wi IT &ngr;&agr; xiü RiiytiuTiUS CtSl" FlTS — quenz über eine innerhalb der Auswerteeinheit angeordnete Frequenzauswertung überwacht. Bei Berühren oder Kontakt der Druckleisten kommt es zu einer Frequenzänderung, die über den, der Frequenzauswertung nachgeschalteten Mono-Flopp erkennbar ist. Ein entsprechendes Steuerrelais bzw. Leistungstreiber beaufschlagt die Motorsteuerung. Innerhalb der Auswerteeinheit 1st zusätzlich eine Leitungsüberwachung mit einem Leuchtmelder, in Form einer Lampe, angeordnet. Diese Leitungsüberwachung wirkt zusätzlich auf das Steuerrelais bzw. auf den Leistungstreiber.The active termination is monitored within the evaluation unit via a constant voltage supply and a decoupling with a conditioned voltage via the pressure bars (vecBÖfyt). The constant voltage and frequency are monitored via a frequency evaluation arranged within the evaluation unit. When the pressure bars are touched or come into contact, a frequency change occurs which can be detected via the mono-flop connected downstream of the frequency evaluation. A corresponding control relay or power driver supplies the motor control. A line monitor with an indicator light in the form of a lamp is also arranged within the evaluation unit. This line monitor also acts on the control relay or the power driver.
Vorteilhafterweise erfolgt die Frequenzauswertung über eine Elektronik, die das Signal für ein nachtriggerbares Mono-Flopp aufbereitet. Das bereits erwähnte Mono-Flopp benötigt einen gleichmäßigen Impuls. Bei Änderung oder Ausbleiben des Impulses reagiert das Mono-Flopp.Advantageously, the frequency evaluation is carried out via electronics that prepare the signal for a retriggerable mono-flop. The mono-flop mentioned above requires a constant pulse. If the pulse changes or is absent, the mono-flop reacts.
Ein Ausführungsbeispiel der Erfindung ist anhand eines Nachfolgenden näher erläutert.An embodiment of the invention is explained in more detail below.
Die übliche und erforderliche Versorgungsspannung 4 wird von einer nicht dargestellten Versorgungquelle der Auswerteeinheit 5 zugeführt. Über eine Konstantspannungsversorgung 6 und einer Entkopplung 7 werden die schematisiert dargestellten Druckleisten 1, 2, die über einen aktiven Abschluß J &eegr; Form eines Frequenzgenerators 3 verbunden sind, versorgt. Die ständige Frequenz des aktiven Abschlußes wird über eine Frequenzauswertung 9 überwacht. Der Frequenzauswertung 9 nachgeschaltet ist ein Mono-Flopp 10 sowie ein Steuerrelais 11 bzw. Leistungstreiber zum Ansteuern der nicht dargestellten Motorstauerung. Zusätzlich befindet sich in der Auswerteeinheit 5 eine Leitungsüberwachung 8, die mit einem Leuchtmelder 12 gekoppelt ist und zusätzlich über das Steuerrelais (11) bzw. Leistungstreiber auf die nicht dargestellte Motorsteuerung wirkt. The usual and required supply voltage 4 is supplied to the evaluation unit 5 from a supply source not shown. The schematically shown pressure bars 1, 2, which are connected via an active termination J in the form of a frequency generator 3, are supplied via a constant voltage supply 6 and a decoupling 7. The constant frequency of the active termination is monitored via a frequency evaluation 9. The frequency evaluation 9 is followed by a mono-flop 10 and a control relay 11 or power driver for controlling the motor control (not shown). In addition, the evaluation unit 5 contains a line monitor 8, which is coupled to an indicator light 12 and also acts on the motor control (not shown) via the control relay (11) or power driver.
1. Druckleiste1. Pressure bar
2. Druckleiste2. Pressure bar
3. aktiver Abechluß3. active termination
4. Versorgungsspannung4. Supply voltage
5. Auewerteeinheit5. Evaluation unit
6. Konstantspannungsveraorgung6. Constant voltage supply
7. Entkopplung7. Decoupling
8. Leitungsüberwachung8. Line monitoring
9. Frequenzauswertung9. Frequency evaluation
10. Mono-Flopp10. Mono-Flop
11. Steuerrelaie / Leistungstreiber11. Control relay / power driver
12. Leuchtmelder12. Indicator light
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9006605U DE9006605U1 (en) | 1990-06-12 | 1990-06-12 | Circuit monitoring on movable closing edges |
DE4118219A DE4118219C2 (en) | 1990-06-12 | 1991-06-04 | Device for monitoring the proper functioning of closing edges that can be moved by a drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9006605U DE9006605U1 (en) | 1990-06-12 | 1990-06-12 | Circuit monitoring on movable closing edges |
Publications (1)
Publication Number | Publication Date |
---|---|
DE9006605U1 true DE9006605U1 (en) | 1990-08-16 |
Family
ID=6854603
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE9006605U Expired - Lifetime DE9006605U1 (en) | 1990-06-12 | 1990-06-12 | Circuit monitoring on movable closing edges |
DE4118219A Expired - Fee Related DE4118219C2 (en) | 1990-06-12 | 1991-06-04 | Device for monitoring the proper functioning of closing edges that can be moved by a drive |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4118219A Expired - Fee Related DE4118219C2 (en) | 1990-06-12 | 1991-06-04 | Device for monitoring the proper functioning of closing edges that can be moved by a drive |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE9006605U1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0497692A2 (en) * | 1991-02-01 | 1992-08-05 | Gmi Holdings Inc | Wiring error detector for a door operator |
EP0501858A2 (en) * | 1991-02-25 | 1992-09-02 | Gmi Holdings Inc | Fail safe obstruction detector for door openers |
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 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4042429C3 (en) * | 1990-06-30 | 1997-11-13 | Peisler Gmbh | Safety circuit board |
DE19625752A1 (en) * | 1996-06-27 | 1998-01-02 | Andre Haake | Electrical switching device with quiescent current monitoring |
DE19834531A1 (en) * | 1998-07-31 | 2000-02-03 | Bayerische Motoren Werke Ag | Powered vehicle window has electrical conductors at the edge as part of an oscillating circuit energized by the window movement as an anti-jam protection |
US6337549B1 (en) | 2000-05-12 | 2002-01-08 | Anthony Gerald Bledin | Capacitive anti finger trap proximity sensor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3754176A (en) * | 1972-05-26 | 1973-08-21 | Miller Bros | Electric circuit for a safety door edge |
CH579840A5 (en) * | 1974-11-14 | 1976-09-15 | Bbc Brown Boveri & Cie | |
DE2719438C2 (en) * | 1977-04-30 | 1983-12-01 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Protective device on a closing edge that can be moved by a drive |
-
1990
- 1990-06-12 DE DE9006605U patent/DE9006605U1/en not_active Expired - Lifetime
-
1991
- 1991-06-04 DE DE4118219A patent/DE4118219C2/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0497692A2 (en) * | 1991-02-01 | 1992-08-05 | Gmi Holdings Inc | Wiring error detector for a door operator |
EP0497692A3 (en) * | 1991-02-01 | 1993-03-31 | Gmi Holdings Inc | Wiring error detector for a door operator |
US5384495A (en) * | 1991-02-01 | 1995-01-24 | Gmi Holdings, Inc. | Wiring error detector for door operator |
EP0501858A2 (en) * | 1991-02-25 | 1992-09-02 | Gmi Holdings Inc | Fail safe obstruction detector for door openers |
EP0501858A3 (en) * | 1991-02-25 | 1993-03-31 | Gmi Holdings Inc | Fail safe obstruction detector for door openers |
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 |
Also Published As
Publication number | Publication date |
---|---|
DE4118219A1 (en) | 1992-01-23 |
DE4118219C2 (en) | 1995-03-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0032694B1 (en) | Arrangement for determining the position of a switch and for the control of the accompanying conductors for short- and open-circuit | |
EP0131146B1 (en) | Electronic switching device, preferably operating without making contact | |
DE10347979A1 (en) | Diagnosable switch arrangement has potential divider and state of switch arrangement can be determined by measuring voltage between potential divider node and earth potential of potential divider | |
DE9006605U1 (en) | Circuit monitoring on movable closing edges | |
DE102006033705B3 (en) | Switching arrangement for examining switching position of push button switch, which is used in automatic transmission of motor vehicle, has switch with two connections | |
EP1594021B1 (en) | Circuit device and method for testing relay switching contacts of a digital output circuit | |
EP1983348B1 (en) | Circuit for measuring, limiting and switching a load current | |
EP0125404B1 (en) | Circuit for monitoring a fault of a load which is switched by a controlled switch | |
EP0417392B1 (en) | Output circuit for a potentiometer | |
DE3844176A1 (en) | Method for detecting a current flowing between a phase conductor and a return conductor via the human body and for switching off the mains conductors | |
DE2922782C2 (en) | Monitoring device for two-pole electrical command lines | |
DE2438257C2 (en) | Circuit arrangement for monitoring a binary signal generator | |
EP2900539B1 (en) | Circuit arrangement for revealing light signal errors | |
DE10246107B4 (en) | Method and circuit arrangement for fault monitoring of at least one electrical load | |
DE3012076A1 (en) | Methane detector for mine - distinguishes between faults and danger states by alternate antivalent circuit and line fault detector | |
DE3041475C2 (en) | Circuit arrangement for remote monitoring of a changeover contact and the signal lines connected to it | |
DE19539227A1 (en) | Tester with a display element | |
DE3838449A1 (en) | Clamping-in protection device | |
DE3035985A1 (en) | Earth isolation monitoring circuit for AC supply network - uses diodes for coupling measuring bridge to AC power lines | |
DE935648C (en) | Device to control the air pressure of rubber tires | |
DD270796B5 (en) | CIRCUIT ARRANGEMENT FOR ELECTRONIC FUSE MONITORING | |
DE3305627C2 (en) | Circuit arrangement for monitoring the working range of an operational amplifier | |
EP0404143A1 (en) | Load monitoring circuit with alternating current working in railway systems | |
EP0855035B2 (en) | Operating process for an input circuit and corresponding input circuit | |
DE102021115542A1 (en) | Switching device for process measurement technology |