EP0137102B1 - Einrichtung zur Steuerung des Bremsauslösepunktes bei Aufzügen - Google Patents

Einrichtung zur Steuerung des Bremsauslösepunktes bei Aufzügen Download PDF

Info

Publication number
EP0137102B1
EP0137102B1 EP84106267A EP84106267A EP0137102B1 EP 0137102 B1 EP0137102 B1 EP 0137102B1 EP 84106267 A EP84106267 A EP 84106267A EP 84106267 A EP84106267 A EP 84106267A EP 0137102 B1 EP0137102 B1 EP 0137102B1
Authority
EP
European Patent Office
Prior art keywords
travel
braking
distance
storey
speed
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
Application number
EP84106267A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0137102A1 (de
Inventor
Paul Friedli
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.)
Inventio AG
Original Assignee
Inventio AG
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 Inventio AG filed Critical Inventio AG
Priority to AT84106267T priority Critical patent/ATE21679T1/de
Publication of EP0137102A1 publication Critical patent/EP0137102A1/de
Application granted granted Critical
Publication of EP0137102B1 publication Critical patent/EP0137102B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3492—Position or motion detectors or driving means for the detector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/44—Means for stopping the cars, cages, or skips at predetermined levels and for taking account of disturbance factors, e.g. variation of load weight

Definitions

  • the invention relates to a device for controlling the brake trigger point in elevators with markings in the elevator shaft at a certain distance from the floors, which cooperate with a switch which can be actuated when the elevator car drives past, and with a speed measuring device connected to the lifting motor, the brake trigger point depending can be determined from the speed measured when the elevator car drives past the marking of the destination floor, and stopping errors from earlier journeys are taken into account when determining the braking release point.
  • the nominal travel speed can also be reached while driving through the smallest floor distance.
  • the braking phase is initiated when the elevator car drives past a mark made in the elevator shaft, for example in the form of a magnet, the markings always being arranged at the same distance from the floors.
  • This type of brake initiation leads to inaccuracies in stopping, which are mainly caused by the changing load moments with the cabin load and therefore also the driving speed.
  • a voltage proportional to the travel speed of the elevator car is generated by means of a tachometer dynamo, which voltage is switched against a reference voltage via a relay and a switch which can be actuated by the elevator car.
  • the reference voltage generated by a stabilized voltage source is greater than the greatest tacho voltage that occurs.
  • a capacitor and resistors are connected to the stabilized voltage source in such a way that the capacitor voltage is equal to the reference voltage when the switch is closed. Markings are arranged in the elevator shaft for each direction of travel at a certain distance from the floors.
  • the switch When the elevator car drives past the marking of the destination floor, the switch is opened so that the capacitor discharges through the resistors.
  • the capacitor voltage When the capacitor voltage has dropped to the level of the tachometer voltage, the relay drops out, the drive motor is switched off and the brake is applied.
  • the voltage at the relay will sooner or later become zero, so that control of the time at which the brake is triggered is dependent on the driving speed.
  • control contacts are arranged on the elevator car, by means of which stop errors can be detected.
  • a step-by-step mechanism can be actuated, which is designed in such a way that it can adjust a resistor arranged in the brake circuit in proportion to the size of the stopping error.
  • the stopping error stored in this way now has an effect on the next trip in such a way that a more or less large current flows in the braking circuit, as a result of which a new stopping error is to be avoided.
  • the object underlying the invention is to further improve the holding accuracy in lifts of the type mentioned.
  • the invention proposes, with the features characterized in the patent claims, to record the shaft mark-floor level fluctuating distances due to building tolerances from floor to floor and to specify them as target paths for a path-dependent determination of the brake release point, the brake release point being the difference of the respective one Target path and a braking distance derived from experience is determined.
  • the advantage achieved with the invention is to be seen in particular in the fact that the stopping accuracy is significantly increased by the precise detection of the distances between the shaft marking level and the distance-dependent determination of the brake release point.
  • the stopping accuracy is further improved by generating, storing and storing correction floors for floors with different friction conditions and taking them into account when calculating the brake release point.
  • Another advantage is that the device according to the invention can be retrofitted into already existing elevator systems of various types, without the need for expensive adjustments and adjustments to be made to the existing installations.
  • 1 denotes the lifting motor of an elevator, which drives an elevator car 6 suspended on a conveyor cable 4 via a gear 2 and a traction sheave 3 and balanced by a counterweight 5.
  • the lifting motor for example an asynchronous motor, is coupled to a flywheel 7 and the brake drum 8 of an electromechanical holding brake and is connected to a three-phase network RST via contacts 9, 10 of directional protection devices 11, 12 and contacts 13 of a main switch.
  • the control of the direction of travel contactors 11, 12 is assumed to be known and is therefore not further shown and described.
  • the elevator car 6 is guided in an elevator shaft 14, which may extend, for example, over twelve floors El - El 2 and in which four markings in the form of magnets M1-M4 are arranged at a certain distance from the floors.
  • a bistable magnetic switch 15 is fastened to the elevator car 6 and is actuated when the elevator car 6 drives past the magnets M1-M4 and is electrically connected to an input of a control device 16 described in more detail below.
  • Floor relays SP1-SP12 are assigned to floors E1-E12, which can be controlled by means of floor call transmitters DE1-DE12 provided on floors E1-E12 and car call transmitters (not shown) arranged in elevator car 6.
  • SK1-SK12 self-holding contacts are designated, via which the floor relays SP1-SP12 keep voltage after entering calls.
  • the self-holding contacts SK1-SK12 are connected to a conductor 17, via which the storey relays SP1-SP12 are switched off in a known manner after the execution of a travel command by means of switching elements (not shown).
  • the floor relays SP1-SP12 are connected to further inputs of the control unit 16 in order to query their memory status.
  • a brake contact 23 which can be actuated by the holding brake and is closed when the elevator car 6 is at a standstill is connected to a further input of the control device 16.
  • the floor call transmitters DE1-DE12 are connected to the voltage source via another brake contact 24, which is also only closed when the vehicle is at a standstill.
  • a contact 25 of a directional contactor 11 is connected to a further input of the control unit 16 for the purpose of reporting the direction of travel.
  • a pulse generator 26 consists of a reflective film 27 attached to the flywheel 7 and a reflective light barrier 28 which is connected to a further input of the control device 16.
  • the reflective film 27 has reflective and non-reflective zones, the zones being distributed around the circumference of the flywheel 7 in such a way that one pulse each corresponds to a travel path of the elevator car 6 of, for example, 2 mm.
  • the control unit 16 consists of a distance table RAM1, a braking distance table RAM2, a floor correction table RAM3, a selector C1 indicating the respective cabin position, a floor register C2 indicating a target floor, a path counter C3, a speed register C4, a computer RE and a comparator KO.
  • Distance, braking distance and floor correction table RAM1, RAM2, RAM3 are read-write memories, while the selector C1, the floor and speed registers C2, C4 and the travel counter C3 are registers of a microprocessor CPU, the arithmetic unit of which functions the computer RE and Comparator KO executes.
  • the read-write memories RAM1, RAM2, RAM3, the microprocessor CPU, a read-only memory EPROM and an interface circuit IF are connected to one another via a bus B consisting of data, address and control lines and, together with a clock generator T, form a microcomputer.
  • the interface circuit IF can, for example, consist of a multiplexer for the data input from the floor relays SP1-SP12 and for the input and output of the other data from bus drivers which are activated with the aid of an address decoder.
  • the output of the control device 16 connected to the brake and control relays 19, 21 is connected to the corresponding output of the interface circuit I F via a switch 29, for example in the form of a transistor switch.
  • the distances between the magnets M1-M4 of each floor are stored in the distance table RAM1, the distances in the downward travel direction of the elevator car 6 being designated by first, second and third distances D1, D2, D3 (FIG. 2), and for example the first and the third distance D1, D3 may each be 40 cm and the second distance D2 20 cm.
  • the magnets M1-M4 are arranged in the elevator shaft 14 in such a way that when the elevator car 6 is flush with one floor, the magnetic switch 15 is located exactly in the middle of the second distance D2 (point 111, FIG. 2).
  • the distance table RAM1 is formed as follows: while the elevator car 6, for example moving downwards, passes the magnets M1-M4, the input assigned to the magnetic switch 15 is queried by the control device 16.
  • the travel counter C3 is incremented as a function of the pulses generated by the pulse generator 26.
  • the counter reading is read and stored in the distance table RAM1 at an address which is assigned to the floor number displayed by the selector C1 as the value of the first distance D1.
  • the first distance D1 is subtracted from the counter reading and the difference is stored as the value of the second distance D2.
  • the value of the third distance D3 is determined and stored during the fourth signal change and the counter reading is then deleted.
  • selector C1 is switched to the number of the next floor. If the vehicle drives past the same floor repeatedly, the existing values are compared with the newly determined values and, in the event of deviations, appropriately corrected.
  • an average value DO assigned to all floors is formed from the values of the distances D1 and D3 of the floors already traveled and stored.
  • braking distances S B and speeds associated therewith, measured during the initiation of braking, are stored for each direction of travel.
  • the braking distance table RAM2 is formed when braking for the first time, with further value pairs being formed based on the braking distance that has occurred and the assigned speed. This is done in such a way that, in a range of, for example, 75-125% of the measured speed, the braking distances increasing with the speed and derived from the first measured braking distance are determined and stored.
  • these braking distances S Br are compared with the braking distances that have actually occurred and are corrected appropriately in the event of deviations.
  • the frictional conditions may not be the same over the entire elevator shaft 14, it can happen that the braking distance actually occurring is not the same on all floors at a certain speed. This can lead to the fact that an exact table value of the braking distance table RAM2 that has already been corrected several times on floors with different friction is falsified. As a result, the stopping accuracy on the other floors deteriorates again, so that the corrections would have to be carried out again.
  • the braking distance S Br stored in the braking distance table RAM2 is supplemented by a correction value K St stored in the floor correction table RAM3 and dependent on the direction of travel.
  • the correction value K St is formed in such a way that, depending on whether the braking distance error on a floor with differing friction is positive or negative, the correction value K St is increased or decreased by a travel pulse, but does not exceed a maximum size.
  • the distances D1, D2, DO are retrieved from the distance table RAM1 and the correction value K st from the floor correction table RAM3 at an address which is assigned to the floor number contained in the selector C1, and taking into account the travel direction queried at the corresponding input of the control unit 16.
  • the braking distance S B is called up from the braking distance table RAM2 at an address which is dependent on the speed stored in the speed register C4 and the direction of travel.
  • the brake initiation path S Eini is stored and the input of the control device 16 connected to the magnetic switch 15 is activated.
  • the travel counter C3 is incremented depending on the pulses generated by the pulse generator 26.
  • the distance counter reading is now continuously compared with the brake initiation distance S Einl . If the paths and a stop determination are identical, which is given, for example, by the same floor numbers in the selector C1 and the destination floor register C2, the output of the control unit 16 connected to the transistor switch 29 is activated such that the brake relay 19 and the control relay 21 drop out, the braking process triggered and the engine is switched off (point 11, Fig. 2).
  • the now closing brake contact 23 signals the brake application via the assigned input to the control unit 16, as a result of which the floor number contained in the destination floor register C2 is deleted.
  • the speed counter is zero
  • the distance counter is read and the actual braking distance is determined by subtracting the braking initiation path S Einl . Then, as already described above, the correction of the braking distance table RAM2 is carried out.
  • v d denotes a speed curve at full load downward and V u one at full load upward.
  • the brake is triggered at time t o and begins to react at time t o .
  • the path difference s resulting in the assumed extreme cases corresponds to the maximum stopping difference that occurs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Elevator Control (AREA)
  • Vehicle Body Suspensions (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Control And Safety Of Cranes (AREA)
  • Braking Arrangements (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Warehouses Or Storage Devices (AREA)
EP84106267A 1983-08-23 1984-06-01 Einrichtung zur Steuerung des Bremsauslösepunktes bei Aufzügen Expired EP0137102B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84106267T ATE21679T1 (de) 1983-08-23 1984-06-01 Einrichtung zur steuerung des bremsausloesepunktes bei aufzuegen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4592/83A CH660586A5 (de) 1983-08-23 1983-08-23 Einrichtung zur steuerung des bremsausloesepunktes bei aufzuegen.
CH4592/83 1983-08-23

Publications (2)

Publication Number Publication Date
EP0137102A1 EP0137102A1 (de) 1985-04-17
EP0137102B1 true EP0137102B1 (de) 1986-08-27

Family

ID=4278962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106267A Expired EP0137102B1 (de) 1983-08-23 1984-06-01 Einrichtung zur Steuerung des Bremsauslösepunktes bei Aufzügen

Country Status (7)

Country Link
EP (1) EP0137102B1 (es)
AT (1) ATE21679T1 (es)
CH (1) CH660586A5 (es)
DE (1) DE3460558D1 (es)
ES (1) ES534468A0 (es)
FI (1) FI74684C (es)
HU (1) HU189120B (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0297232B1 (de) * 1987-06-30 1991-08-07 Inventio Ag Istwertgeber für den Lageregelkreis eines Aufzugsantriebes
DE102009049267A1 (de) * 2009-10-13 2011-04-21 K-Solutions Gmbh Verfahren zur Steuerung eines Aufzugs und einer Aufzugsgruppe
CN105980284B (zh) * 2014-02-06 2019-10-22 奥的斯电梯公司 电梯中的制动器操作管理

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425515A (en) * 1964-06-15 1969-02-04 Gen Electric Digital control for mine hoist system
FR1500005A (fr) * 1966-06-02 1967-11-03 Sélecteur pour ascenseur, monte-malade, monte-charge, etc.
FR2145035A5 (es) * 1971-07-07 1973-02-16 Telemecanique Electrique
DE2617171C2 (de) * 1976-04-20 1983-01-20 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Anordnung zum elektrischen Ermitteln des Schaltpunktes in Förderanlagen
US4134476A (en) * 1977-10-26 1979-01-16 Westinghouse Electric Corp. Elevator system
US4256203A (en) * 1978-12-18 1981-03-17 Otis Elevator Company Self-adjusting elevator leveling apparatus and method
FI66328C (fi) * 1979-10-18 1984-10-10 Elevator Gmbh Foerfarande och anordning foer att stanna en laengs med en styrd bana gaoende anordning saosom en hiss
JPS56117969A (en) * 1980-02-22 1981-09-16 Hitachi Ltd Device and method of controlling elevator
DE3030793A1 (de) * 1980-08-14 1982-03-11 Otis Elevator Co., Hartford, Conn. Aufzuganlage und verfahren zur betriebssteuerung derselben

Also Published As

Publication number Publication date
EP0137102A1 (de) 1985-04-17
ATE21679T1 (de) 1986-09-15
HU189120B (en) 1986-06-30
FI843254A0 (fi) 1984-08-17
FI74684B (fi) 1987-11-30
FI843254A (fi) 1985-02-24
ES8505310A1 (es) 1985-05-16
FI74684C (fi) 1988-03-10
ES534468A0 (es) 1985-05-16
CH660586A5 (de) 1987-05-15
DE3460558D1 (en) 1986-10-02
HUT35211A (en) 1985-06-28

Similar Documents

Publication Publication Date Title
DE69311221T2 (de) Verfahren und Vorrichtung für die Kontrolle und das automatische Korrigieren des Verzögerungs-/Stopkommandos eines Personen- oder Lastenaufzuges gemäss Veränderungen in den Betriebsdaten des Systems
EP0026406B1 (de) Antriebssteuerung für einen Aufzug
DE69205372T2 (de) Bestimmung der Anzahl der ein- und aussteigenden Personen bei einer Aufzugskabine.
DE1805459B2 (de) Anordnung zum anhaltena eines fyhrzeuges an einem bestimmten haltepunkt
DE112014007092B4 (de) Aufzugsteuervorrichtung
EP0391174A1 (de) Vorrichtung und Verfahren zum Erfassen von physikalischen Kenngrössen eines Aufzuges
DE112014006595B4 (de) Auszugspositions-Erfassungsvorrichtung
DE102010062154A1 (de) Sicherheitseinrichtung für einen Aufzug
DE3912575C2 (es)
EP0297232B1 (de) Istwertgeber für den Lageregelkreis eines Aufzugsantriebes
DE4119253C2 (es)
DE68913506T2 (de) Aufzugssystem mit unabhängiger Beschränkung des Geschwindigkeitssollwertes in den Endzonen.
EP0318660B1 (de) Verfahren und Einrichtung zur Wegregelung eines Positionier-antriebes, insbesondere für Aufzugsanlagen
EP0137102B1 (de) Einrichtung zur Steuerung des Bremsauslösepunktes bei Aufzügen
DE2617171C2 (de) Anordnung zum elektrischen Ermitteln des Schaltpunktes in Förderanlagen
EP0212147B1 (de) Evakuiervorrichtung für Aufzüge
DE2641983C2 (de) Verfahren zur zeitlichen Verzögerung des Bremsbeginns bei geregelten Transportantrieben und eine Vorrichtung zu deren Ausführung
DE2639950C2 (de) Einrichtung zur Bremssteuerung von spurgebundenen Fahrzeugen unter Berücksichtigung unterschiedlicher Bremsentwicklungszeiten
WO1984002697A1 (en) Control system for elevator devices
AT222296B (de) Fahrprogramm-Steuerung für Aufzüge
DE112015006293T5 (de) Aufzugsteuervorrichtung
AT240410B (de) Kopierwerk zur Steuerung und Überwachung von Förderanlagen, insbesondere Seilbahnen
DE2639106C2 (de) Bremsüberwachungseinrichtung auf einem spurgebundenen Fahrzeug
DE1613916C (de) Geschwindigkeits Regelanordnung fur ein Eisenbahntnebfahrzeug
DE1805459C (de) Anordnung zum Anhalten eines Fahrzeugs an einem bestimmten Haltepunkt

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT NL

17P Request for examination filed

Effective date: 19850807

17Q First examination report despatched

Effective date: 19860204

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB IT NL

REF Corresponds to:

Ref document number: 21679

Country of ref document: AT

Date of ref document: 19860915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3460558

Country of ref document: DE

Date of ref document: 19861002

ITF It: translation for a ep patent filed
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950518

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950522

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950523

Year of fee payment: 12

Ref country code: AT

Payment date: 19950523

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19950531

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19950627

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960601

Ref country code: AT

Effective date: 19960601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19960630

BERE Be: lapsed

Owner name: INVENTIO A.G.

Effective date: 19960630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19970101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970301

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19970101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST