EP3532421B1 - Ascenseur avec circuit electrique et surveillance d`un interupteur au moyen d'une tension alternative - Google Patents

Ascenseur avec circuit electrique et surveillance d`un interupteur au moyen d'une tension alternative Download PDF

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Publication number
EP3532421B1
EP3532421B1 EP17787199.3A EP17787199A EP3532421B1 EP 3532421 B1 EP3532421 B1 EP 3532421B1 EP 17787199 A EP17787199 A EP 17787199A EP 3532421 B1 EP3532421 B1 EP 3532421B1
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EP
European Patent Office
Prior art keywords
switch
monitored
signal
elevator system
microcontroller
Prior art date
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EP17787199.3A
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German (de)
English (en)
Other versions
EP3532421A1 (fr
Inventor
Astrid Sonnenmoser
Ivo LUSTENBERGER
Kurt Heinz
Thomas Hartmann
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Inventio AG
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Inventio AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/22—Operation of door or gate contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons

Definitions

  • the EP28 553 23 A1 describes a braking method for controlling an elevator, wherein a solid-state circuit is provided for supplying electrical power from a DC intermediate circuit which drives the elevator car.
  • a brake controller is controlled by means of a pulse signal. But the pulse signal here is used to overcome a possible fault due to contamination at an electrical contact, so that the brake controller can switch correctly.
  • electrocorrosion due to electropolarity that results in a certain Direction is directed at the metal contact of the brake controller would often occur because only a direct voltage or a direct current is applied to the brake controller CN 205 312 843 U discloses a power supply circuit for an elevator car door. At the output of the circuit, two optocouplers are connected in a row with one another in order to weaken the adverse effect of corrosion in the circuit.
  • the signal transmitter unit is designed to generate the alternating voltage signal with positive and negative amplitudes that are symmetrical with respect to a 0V potential, the occurrence of electrical corrosion can be greatly reduced.
  • the AC voltage signal can preferably be generated by the signal generator unit in such a way that the maximum positive voltages are the same as the maximum negative voltages, with a voltage profile over time preferably being set symmetrically to the 0V potential.
  • the electrically conductive structures of the switch are exposed to both positive and negative electrical voltages for the same time and with the same strength. Electrochemically induced reactions can be largely reversed when the electrical voltage is reversed, so that overall, hardly any electrocorrosion can occur.
  • Fig. 2 illustrates a conventional monitoring of a switching state of a switch.
  • the controller 15 controls a power supply of an electric motor accommodated in the drive 7 by a power source 17.
  • the power source 17 can, for example, be a multi-phase power connection whose power supply to the drive 7 is controlled with the aid of a switch arrangement 19. It can be important here to be able to detect a current switching state of the switch arrangement 19 and to be able to communicate with the controller 15 for control purposes, for example.
  • a protective diode 53 is also provided in the signal transmitter unit 37. One end of this protective diode 53 is connected to the electrical connection of the first microcontroller 45 to the capacitor 51. The other end of the protective diode 53 is electrically connected to a protective potential, for example a ground potential 54. In this way, the protective diode 53 can prevent static electrical charges from damaging the first microcontroller 45, for example.
  • the switch 21 is in its closed state. If, however, no voltage or only a direct voltage is present at the output 43 of the switch 21, although the alternating voltage signal 47 is present at its input 41, it can be assumed that the switch 21 is open or defective.
  • the AC voltage signals 47 are preferably generated by the signal generator unit 45 in such a way that an AC voltage signal 48 is set at the switch 21, in which the voltage U periodically reverses its polarity with an amplitude symmetrical to an OV potential (zero volt potential).
  • the AC voltage signal 48 can be sinusoidal, rectangular or with any other periodic curve and move symmetrically around a time axis t. Times in which the alternating voltage signal 48 is positive and times in which it is negative are essentially of the same length, so that any electrochemical reactions can repeatedly take place in alternating directions, but not a build-up of, for example, an electrochemically generated oxide layer on electrically conductive ones Structures of the switch to be monitored 21 comes.
  • the contactor 63 is coupled to a switch 21 to be monitored in such a way that in the event that the contactor 63 changes its switching state, the switch 21 to be monitored also inevitably changes its switching state. A switching state of the switch 21 to be monitored can then be monitored in the manner described above with the aid of the signal transmitter unit 37 and the monitoring unit 39 of the circuit 35 in a simple and reliable manner, and electrical corrosion can be avoided in the process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Control (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Claims (13)

  1. Système d'ascenseur (1) présentant :
    une cabine d'ascenseur (3) ;
    un mécanisme d'entraînement (7) pour entraîner la cabine d'ascenseur (3) ;
    un dispositif de commande (15) pour commander au moins le mécanisme d'entraînement (7) et éventuellement d'autres composants d'ascenseur ;
    le dispositif de commande (15) comprenant un circuit (35) et le circuit (35) présentant :
    un commutateur (21) à surveiller comportant une entrée (41) et une sortie (43) ;
    une unité d'émission de signaux (37) qui est conçue pour appliquer un signal de tension alternative (47) comme signal d'entrée à l'entrée (41) du commutateur (21) à surveiller ;
    une unité de surveillance (39) qui est conçue pour recevoir un signal de sortie appliqué à la sortie (43) du commutateur (21) à surveiller, et pour produire un signal de surveillance sur la base d'une comparaison du signal de sortie avec le signal d'entrée, lequel signal de surveillance indique un état de commutation du commutateur (21) à surveiller.
  2. Système d'ascenseur selon la revendication 1, dans lequel l'unité d'émission de signaux (37) est conçue pour produire le signal de tension alternative (47) avec une tension électrique inversée périodiquement.
  3. Système d'ascenseur selon l'une des revendications précédentes, dans lequel l'unité d'émission de signaux (37) est conçue pour produire le signal de tension alternative (47) avec des amplitudes positives et négatives symétriques par rapport à un potentiel de 0 V.
  4. Système d'ascenseur selon l'une des revendications précédentes, dans lequel l'unité d'émission de signaux (37) est conçue pour produire le signal de tension alternative (47) avec une durée de période variant dans le temps.
  5. Système d'ascenseur selon l'une des revendications précédentes, dans lequel l'unité d'émission de signaux (37) présente :
    un premier microcontrôleur (45) pour produire un signal électrique d'une amplitude variant dans le temps ;
    un port de sortie (42) ;
    un condensateur (51) qui est connecté électriquement au premier microcontrôleur (45) d'une part et au port de sortie (42) d'autre part, et est conçu pour former une séparation galvanique entre le premier microcontrôleur (45) et le port de sortie (42) ;
    l'unité de surveillance (39) présentant :
    un second microcontrôleur (55) pour analyser un signal électrique d'une amplitude variant dans le temps ;
    un port d'entrée (44) connecté électriquement au second microcontrôleur (55) ;
    le port de sortie (42) de l'unité d'émission de signaux (37) étant connecté électriquement à l'entrée (41) du commutateur (21) à surveiller, et le port d'entrée (44) de l'unité de surveillance (39) étant connecté électriquement à la sortie (43) du commutateur (21) à surveiller.
  6. Système d'ascenseur selon la revendication 5, dans lequel l'unité d'émission de signaux (37) présente en outre une diode de protection (53) qui est commutée entre une connexion électrique du premier microcontrôleur (45) au condensateur (51) d'une part et à un potentiel de protection électrique (54) d'autre part.
  7. Système d'ascenseur selon la revendication 5 ou 6, dans lequel l'unité de surveillance (39) comprend en outre une diode de protection (57) qui est commutée entre une connexion électrique du second microcontrôleur (55) au port d'entrée (44) d'une part et à un potentiel de protection électrique (58) d'autre part.
  8. Système d'ascenseur selon l'une des revendications précédentes, dans lequel le commutateur (21) à surveiller commute de faibles puissances électriques inférieures à 50 W dans le système d'ascenseur.
  9. Système d'ascenseur selon l'une des revendications précédentes, dans lequel le commutateur (21) à surveiller est un commutateur mécanique.
  10. Système d'ascenseur selon l'une des revendications précédentes, présentant en outre au moins un autre commutateur (63) qui est couplé au commutateur (21) à surveiller de telle sorte que l'au moins un autre commutateur (63) et le commutateur (21) à surveiller modifient systématiquement conjointement leurs états de commutation.
  11. Système d'ascenseur selon la revendication 10, dans lequel l'au moins un autre commutateur (63) est commuté entre le mécanisme d'entraînement (7) et une source de puissance (17) alimentant le mécanisme d'entraînement (7).
  12. Système d'ascenseur selon l'une des revendications précédentes 1 à 9, dans lequel le commutateur (21) à surveiller fait partie d'une chaîne de sécurité du système d'ascenseur (1).
  13. Système d'ascenseur selon la revendication 12, dans lequel le commutateur (21) à surveiller est un commutateur de porte (22).
EP17787199.3A 2016-10-27 2017-10-25 Ascenseur avec circuit electrique et surveillance d`un interupteur au moyen d'une tension alternative Active EP3532421B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16195923 2016-10-27
PCT/EP2017/077234 WO2018077918A1 (fr) 2016-10-27 2017-10-25 Système d'ascenseur comportant un circuit de commutation muni d'un commutateur surveillé au moyen d'un signal de tension alternative

Publications (2)

Publication Number Publication Date
EP3532421A1 EP3532421A1 (fr) 2019-09-04
EP3532421B1 true EP3532421B1 (fr) 2020-09-16

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Application Number Title Priority Date Filing Date
EP17787199.3A Active EP3532421B1 (fr) 2016-10-27 2017-10-25 Ascenseur avec circuit electrique et surveillance d`un interupteur au moyen d'une tension alternative

Country Status (5)

Country Link
US (1) US12330915B2 (fr)
EP (1) EP3532421B1 (fr)
CN (1) CN109863107B (fr)
ES (1) ES2821409T3 (fr)
WO (1) WO2018077918A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018077918A1 (fr) * 2016-10-27 2018-05-03 Inventio Ag Système d'ascenseur comportant un circuit de commutation muni d'un commutateur surveillé au moyen d'un signal de tension alternative
AU2018288311B2 (en) * 2017-06-21 2021-06-17 Inventio Ag Elevator with a monitoring arrangement for monitoring an integrity of suspension members with separated circuitries
EP3853161A1 (fr) * 2018-09-18 2021-07-28 Inventio AG Système de transport de personnes et procédé d'optimisation de son fonctionnement
CN111532923B (zh) * 2020-05-22 2024-12-06 江苏埃尔法电梯有限公司 电梯运行性能实时监测系统
CN116142911A (zh) * 2022-12-28 2023-05-23 杭州优迈科技有限公司 电梯封星电路的检测方法和装置

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JP2879807B2 (ja) * 1992-07-30 1999-04-05 矢崎総業株式会社 スイッチの腐食防止回路
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SI1638880T2 (sl) 2003-06-30 2013-10-30 Inventio Ag Varnostni sistem dvigalne naprave
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Also Published As

Publication number Publication date
CN109863107B (zh) 2022-02-01
US20190263628A1 (en) 2019-08-29
ES2821409T3 (es) 2021-04-26
US12330915B2 (en) 2025-06-17
WO2018077918A1 (fr) 2018-05-03
EP3532421A1 (fr) 2019-09-04
CN109863107A (zh) 2019-06-07

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