EP3233694B1 - Dispositif de commutation de sécurité pour une installation d'ascenseur - Google Patents

Dispositif de commutation de sécurité pour une installation d'ascenseur Download PDF

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Publication number
EP3233694B1
EP3233694B1 EP15794182.4A EP15794182A EP3233694B1 EP 3233694 B1 EP3233694 B1 EP 3233694B1 EP 15794182 A EP15794182 A EP 15794182A EP 3233694 B1 EP3233694 B1 EP 3233694B1
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EP
European Patent Office
Prior art keywords
safety
circuit
detection device
function
connection point
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EP15794182.4A
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German (de)
English (en)
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EP3233694A1 (fr
Inventor
Rudolf J. MÜLLER
Eric Birrer
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Inventio AG
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Inventio AG
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Publication of EP3233694A1 publication Critical patent/EP3233694A1/fr
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    • 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
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
    • B66B5/0093—Testing of safety devices
    • 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
    • B66B19/00—Mining-hoist operation
    • B66B19/007—Mining-hoist operation method for modernisation of elevators
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures

Definitions

  • the invention relates to a safety circuit for installations for the transport of persons and / or property, in particular for elevator installations, the use of such a safety circuit, an elevator installation and a method which is carried out with a safety circuit.
  • a safety circuit in an elevator installation and a method for monitoring semiconductor switches of an elevator installation are known.
  • a periodic measurement of the voltage or the current at the input and at the output of the semiconductor switch and opening the series circuit of the safety circuit by means of a relay contact if the measurement resulted in a short circuit.
  • the elements of the electromechanical relay circuit of the known embodiment are used, in the case of a short circuit of the semiconductor switch, to open the safety circuit.
  • the monitoring can take place here by means of a monitoring circuit which is processor-controlled. To avoid or detect a short circuit in a semiconductor switch complicated and costly solutions can be avoided.
  • a monitoring system for detecting a change in a switching position of a safety switch wherein an independent of an external power supply energy supply device is used to determine a change in a switching position of a safety switch even in the absence of external power supply can. It remains unclear how such a monitoring system can be tested for correct function.
  • a monitoring device for a safety chain having a control device has a testable switching device which is provided with input and output terminals such that a plurality of testable switching devices can be used to set up a monitoring loop via which a digital signal sequence can be transmitted as the continuous signal, so that a "digital closed-circuit current loop" is obtained ,
  • An object of the invention is therefore to provide a safety circuit for installations for the transport of persons and / or property, a use of at least such a safety circuit, an elevator installation with such a safety circuit and a method which is carried out with such a safety circuit, in which an improved mode of operation is realized.
  • the safety circuit is used for installations for the transport of persons and / or property.
  • the safety circuit can be used in particular for a system designed as an elevator installation.
  • a system designed as an elevator installation.
  • Such a system has a safety function and a safety switch associated with the safety function.
  • the safety switch closes or opens depending on a safety state the safety function a safety circuit between a connection point and at least one other connection point of the safety circuit.
  • a plurality of such safety circuits can be provided for the elevator installation, which if appropriate are also integrated into the safety circuit in combination with ordinary safety circuits.
  • a safety circuit can be formed which has at least one such safety circuit.
  • the safety circuit is integrated into the safety circuit at its connection points.
  • the safety circuit has a test function intended to test the safety function.
  • the test function checks whether the safety switch opens and closes the safety circuit depending on the safety status of the safety function.
  • several safety switches corresponding to several safety functions of a safety circuit can be tested together via the test function.
  • the test function opens and closes the safety switch to be tested.
  • both the correct function of opening and closing are checked.
  • it is essential that the safety switch at least opens the safety circuit as a function of the safety state of the safety function. This ensures the immediate safety of the system.
  • a detection device is provided for the test function.
  • the test signal obtained from an output part of the detection device can be evaluated via an integrated circuit having a suitable number of inputs and outputs.
  • an auxiliary power function is provided, with which an auxiliary voltage can be temporarily applied via at least the safety switch and an input part of the detection device for carrying out the test function.
  • This auxiliary voltage can also be applied via a plurality of safety switches, which are preferably connected in series.
  • the auxiliary power function applies a power supply for generating the auxiliary voltage by means of electromagnetic induction locally between the terminal and the at least one further connection point in the safety circuit.
  • the inspection of the at least one safety switch of the safety circuit can be carried out independently of other and possibly conventionally executed safety monitoring of the safety circuit. For the review results then a low energy requirement.
  • the check by the safety circuit is preferably limited to a period in which the system is out of service. Because when the system is in operation, then the review can be done on the total safety circuit, then in particular no auxiliary power function is required.
  • the safety circuit preferably has a control unit which, on the one hand, opens it by means of the test function for the purpose of checking the safety switch and closes and which further evaluates and tests the test signal received from the detection device in conjunction with the test function. During a test, the control unit thus checks whether the safety switch can open and close the safety circuit as a function of the safety status of the safety function.
  • the test function preferably opens and closes the safety switch by means of the safety function, and the detection device detects the resulting opening and / or closing of the safety circuit.
  • Test function, detection device and control unit can be divided into individual modules, but they are preferably combined to form a common module.
  • the safety circuit can advantageously be used for retrofitting or retrofitting to an existing elevator installation. This results in the use of at least one safety circuit according to the invention for retrofitting or retrofitting to an existing elevator installation. If several safety circuits according to the invention are used in such a conversion or retrofitting, then these can be configured the same or differently depending on the application. Because advantageously, the safety circuits can work autonomously for themselves and thus be selected in relation to the particular site on the elevator system. This also concerns the possibility of testing one or more safety functions with one safety switch or several safety switches at the respective application site. The safety circuit can be used in particular with appropriate configuration for monitoring conventional safety monitoring.
  • the at least one safety circuit can advantageously be used for retrofitting or retrofitting to an existing safety circuit of the elevator car.
  • the Umattertician retrofitting a mechanical safety switch is replaced by an electronic safety switch.
  • this significantly higher switching cycles can be allowed, which has a favorable effect on the maintenance and replacement intervals.
  • an elevator installation with an elevator car, a driving space provided for the elevator car and several shaft doors can be realized, wherein at least one safety circuit for monitoring the elevator car and / or the Shaft doors is provided.
  • This elevator installation is then realized with at least one safety circuit according to the invention on the safety circuit.
  • This elevator system is particularly suitable for commercial buildings, high numbers of visitors or in other ways resulting frequent uses.
  • a method for testing at least one safety function in facilities for the transport of persons and / or things are carried out, wherein the examination of the at least one safety function by the safety circuit at certain test periods during a period in which the system except Operation is.
  • the test periods can be repeated periodically in an advantageous manner. The repetition is preferably performed at a distance of not more than 10 seconds.
  • the test period may be 5 milliseconds and repeated every 5 seconds.
  • the auxiliary energy can be introduced in an advantageous manner in the safety circuit.
  • the safety switch can be opened via the test function and the opening of the safety circuit can be detected via the detection device.
  • the safety switch is advantageously closed via the test function and the closure of the safety circuit is detected via the detection device.
  • the test can be done here with a small voltage, for example, 1.4 V.
  • the output part of the detection device and the input part of the detection device are galvanically isolated from each other.
  • the detection device can have, for example, an optocoupler, the input part of the detection device having a radiation transmitter of the opto-coupler, and wherein the output part of the detection device has a radiation receiver of the opto-coupler.
  • the auxiliary power function brings the auxiliary power by means of electromagnetic induction locally between the connection point and the at least one further connection point in the safety circuit.
  • an electrical isolation in particular a galvanic isolation, between one side of the safety circuit, which causes the test and performs, and the other side of the safety circuit, which is electrically integrated into the safety circuit possible.
  • a magnetic coupling can also take place, the input part of the detection device having, for example, a coil, and the output part of the detection device having a magnetic field detector, such as a further coil or a Hall sensor.
  • an isolating transformer is provided for the auxiliary power function and that an output winding of the isolating transformer is connected in series with the safety switch between the connection point and the at least one further connection point.
  • the input winding of the isolation transformer may be connected to an integrated circuit.
  • the detection device is integrated in the control of the isolation transformer or in this itself.
  • two different effects can be exploited.
  • an impulse is initiated on a primary side of the isolation transformer and a corresponding reflection is awaited. This only occurs when current can flow on the secondary side, ie when the safety switch is closed. Consequently, if no reflection is detectable or measurable, the safety switch is actually opened. An opening of the safety switch accordingly causes a lack of reflection.
  • a pulse, a pulse train, or an AC signal on the primary side is initiated and the current or inductance of the primary coil is measured. A higher current, or a smaller inductance, shows that current can flow in the secondary side and the safety switch is closed. On the other hand, shows a smaller current, or a larger inductance that no current flows in the secondary side and therefore the safety switch is open.
  • directional diodes are provided which allow a closed circuit via the output winding of the isolation transformer and the safety switch within a subcircuit between the connection point and the at least one further connection point.
  • the safety circuit can be interrogated via a DC voltage signal, which rests proportionately between the connection point and the at least one further connection point such that the directional diodes are oriented in the reverse direction.
  • the auxiliary voltage on the other hand, preferably has an alternating current component, which results in the closed circuit via the directional diodes.
  • an isolating transformer is provided for the auxiliary power function, that an output winding of the isolation transformer is arranged in a subcircuit which is realized between the connection point and the at least one further connection point, and that the isolation transformer via at least one capacitor of the subcircuit of a DC path between the junction and the at least one other connection point is kept out.
  • a query of the safety circuit via a DC voltage of the interrogating DC current can be performed via a DC path, from which the isolation transformer is kept out. Possible influences of the isolation transformer, which can occur in particular with a possible steep switch-on edge of the DC voltage signal, are thereby avoided.
  • the safety function serves for checking a correct deceleration before reaching an end stop or for checking a correctly closed car door for a drive of the elevator car.
  • Special safety functions to check for a correct delay before reaching a final stop are usually never switched.
  • To check the correct shutdown these safety functions or the associated preferably electronic safety switch can be checked with the safety circuit.
  • critical parts of the safety circuit or of a semiconductor component or solid-state component can be supplied with a small galvanically isolated voltage signal and thus the correct functioning of the at least one safety switch can be checked at any time.
  • This approach is particularly interesting when existing elevator systems are equipped in a modernization with new, modern components, which include, for example, electronic switching elements, in particular semiconductor devices or solid state devices. This high switching cycles can be realized. Therefore, it is advantageous that the safety switch is designed as an electronic safety switch.
  • a plurality of safety functions are provided, that a plurality of safety switches are provided for the plurality of safety functions, that the control unit with test function and detection device is provided for checking the safety functions, which checks whether the safety switches the safety circuit in dependence on the safety states of the safety functions open and close, and that the auxiliary voltage via the safety switch and the input part of the detection device can be applied.
  • several safety functions which are preferably implemented locally together, are checked locally with respect to the operation of their safety switches, for example, if the elevator system is out of service.
  • Fig. 1 shows an elevator system 1 with a safety circuit 2 to a safety circuit 3 in an abstract, schematic representation according to a possible embodiment of the invention.
  • the elevator installation 1 here is a preferred embodiment of a system 1 for the transport of persons and / or property.
  • the elevator installation 1 has an elevator car 4 and an elevator shaft 5.
  • the elevator car 4 is in this case movable in a provided for a drive of the elevator car 4 driving compartment 6.
  • the driving compartment 6 is hereby part of the elevator shaft 5.
  • the safety circuit 2 is particularly suitable for such an elevator installation 1.
  • the elevator installation 1 also has a drive machine unit 7 with a traction sheave 8 and a counterweight 9.
  • the elevator car 4 is suspended on a traction means 10, which also serves as a support means 10.
  • the traction means 10 is guided around a deflection roller 11 and around the traction sheave 8. Further, the traction means 10 is connected to the counterweight 9.
  • a top floor 12 and a bottom floor 13 are shown.
  • buffers 14, 15 are arranged in the elevator shaft 5, against which the elevator car 4 or the counterweight 9 impact in the event of a malfunction.
  • On the floor 12 is a storey door 16 is provided.
  • the safety circuit 3 is shown essentially with respect to its electrical connections.
  • a safety monitoring 20 and a safety monitoring 21 are integrated via electrical lines 18 and electrical lines 19.
  • a safety switch 22 is provided here, which monitors the floor door 16.
  • a safety switch 23 is provided which monitors the landing door 17.
  • the security monitors 20, 21 may be designed conventionally.
  • the safety switches 22, 23 may be mechanical safety switches 22, 23.
  • the safety circuit 2 is configured according to a possible embodiment of the invention.
  • a first embodiment of a possible embodiment of the safety circuit 2 is based on Fig. 2 described in more detail.
  • a second embodiment of a possible embodiment of the safety circuit 2 is based on Fig. 4 described in more detail.
  • the in the Fig. 1 illustrated safety circuit 2 is integrated via an electrical line 30 and an electrical line 31 in the safety circuit 3.
  • a first terminal 32 and a second terminal 33 are illustrated, on which the electrical connection with the rest of the safety circuit 3 comes about.
  • the electrical lines 30, 31 are in the Fig. 1 simplified in terms of their electrical function.
  • suitable cables can be provided which are suspended in the elevator shaft 5, so that the elevator car 4 can be moved by the travel compartment 6, while the electrical connection with the safety circuit 3 remains.
  • Such suspended in the elevator shaft 5 electrical lines may be part of the electrical lines 30, 31 or be mounted as separate, additional electrical connection elements.
  • other possibilities are conceivable to integrate the safety circuit 2 in the safety circuit 3.
  • stationary devices such as the storey doors 16, 17, can be monitored via stationary security monitoring 20, 21, which are integrated in a separate safety circuit.
  • the safety circuit 2 comprises a first safety switch 34 and a second one Safety switch 35.
  • the first safety switch 34 is for a delay control device 36.
  • the second safety switch 35 is for monitoring the elevator car door 37.
  • the deceleration control device 36 is arranged on the elevator car 4.
  • the delay control device 36 can also be retrofitted to an existing elevator car 4.
  • the delay control device 36 cooperates with a measuring tape 38, are attached to the coding. From the codes applied to the measuring tape 38, the delay control device 36 recognizes the current position of the elevator car 4 in the travel compartment 6. In particular, this can be used to determine a distance to a ceiling 39 or to a floor 40 of the elevator shaft 5.
  • such a delay control device 36 can also be based on another principle.
  • the delay control device 36 can realize the principle of a radar using electromagnetic radiation, for example to detect the distance to the ceiling 39 and / or to the floor 40.
  • the delay control device 36 can monitor a reliable braking of the elevator car 4, in particular in the region of the uppermost floor 12 and the lowest floor 13. As a result, a safety function is realized, which prevents a collision with the ceiling 39 or an excessive impact of the elevator car 4 on the buffer 14 and / or the counterweight 9 on the buffer 15.
  • the delay control device 36 actuates the first safety switch 34 for this purpose if the delay is too low. If the first safety switch is actuated and thus opened, then an emergency stop is triggered in normal operation via the safety circuit 3.
  • the second safety switch 35 is actuated upon opening of the elevator car door 37. If the elevator car 4 stops at one of the floors 12, 13, then the second safety switch 35 can be bridged. If, however, the elevator car 4 moves through the travel space 6, then an emergency stop is triggered via the safety circuit 3 when the second safety switch 35 is open.
  • An operation of the elevator installation 1 is understood here to mean that a main energy supply is present to an extent such that a device 45 of the safety circuit 3 monitors the opening of one of the safety switches 22, 23, 34, 35 or the proper functioning of a safety switch 22, 23, 34, 35 can check.
  • a DC voltage 46 is applied to the safety circuit 3 and checks whether a current shortage results. The concern of the DC voltage 46 can be repeated within certain time intervals and thus only for a short test period.
  • the elevator installation 1 If the elevator installation 1 is thus put out of operation, then possibly occurring safety functions can not be checked via the device 45 of the safety circuit 3. However, such a test is possible locally via the safety circuit 2 according to the embodiments of the invention. In this case, this enabling the check is shown by way of example with reference to the safety circuit 2.
  • the security monitors 20, 21 are here considered as conventional security monitors 20, 21, which can only be checked by the device 45. However, it is understood that the operating principle of the safety circuit 2, which allows a local check, in a corresponding manner on other security monitoring of the elevator installation 1, in particular on the security monitors 20, 21, can be realized. Depending on the application, differently configured safety circuits 2 can be used at the respective application site.
  • the safety circuit 2 is partially housed in a housing 47 in this embodiment.
  • the safety circuit 2 can in this case also be partially integrated into the elevator control.
  • Fig. 2 shows a safety circuit 2 for in Fig. 1 illustrated elevator installation 1 according to a first embodiment of the invention.
  • the safety circuit 2 has a control unit 48, which can be realized by an integrated circuit 48.
  • An auxiliary power function H can be activated via the control unit 48. If the auxiliary power function H is activated, then an auxiliary signal 49 with or without a DC voltage component and an AC component of an appropriate waveform is generated.
  • the auxiliary signal 49 may be embodied, for example, as a rectangular signal or as a sinusoidal signal.
  • the safety circuit 2 further comprises an isolating transformer 50 having an input winding 51 and an output winding 52.
  • the auxiliary signal 49 is fed via the input winding 41. As a result, an auxiliary voltage is induced in the output winding 52.
  • safety functions A, B are realized. In a modified embodiment, only one safety function A can be realized. Furthermore, more than two safety functions A, B can be realized.
  • Each of the safety functions A, B is assigned to a safety switch 34, 35.
  • the first safety switch 34 is provided for the delay control device 36.
  • the second safety switch 35 is provided for the elevator car door 37.
  • the number of safety switches 34, 35 is generally the same as the number of safety functions A, B in this case.
  • a current flow in a subcircuit 53 of the safety circuit 2 is realized via the induced auxiliary voltage.
  • the subcircuit 53 is in this case completely within the range between the terminals 32, 33. Thus, there is a local current flow.
  • At least one directional diode 54 and at least one directional diode 55 are arranged here in the subcircuit 53.
  • at least one directional diode 56 is arranged in the electrical line 30, which, however, is located outside of the subcircuit 53.
  • the at least one directional diode 56 is in fact provided for checking by means of the device 45, but now it is assumed that the elevator installation 1, as defined above, is out of operation.
  • a voltage drop occurs at the at least one directional diode 55.
  • the voltage drop results from the lock voltage or the sum of the lock voltages of the at least one directional diode 55 if the at least one directional diode 55 is in the forward direction is controlled.
  • a detection device 57 with an input part 58 and an output part 59 is provided.
  • the input part 58 has a photodiode 58, which is operated with the voltage drop across the at least one directional diode 55.
  • the photodiode 58 is associated with a phototransistor 60.
  • the phototransistor 60 is driven at its base via the photodiode 58 and fed via a resistor 61 from a voltage source 62. If the phototransistor 60 is switched in the forward direction due to the drive via the photodiode 58, then an input signal E is connected to ground. On the other hand, when the phototransistor 60 is off, the input signal E is at the positive voltage of the voltage source 62.
  • an optocoupler 58, 60 is realized via the photodiode 58 and the phototransistor 60.
  • the photodiode 58 is in this case an embodiment of a radiation emitter 58 of the optocoupler 58, 60.
  • the phototransistor 60 is here a possible embodiment of a radiation receiver 60 of the optocoupler 58, 60.
  • About the optocoupler 58, 60 is a galvanic isolation between the input part 58 and Output part 59 realized.
  • the isolation on the side of the control unit 48 is independent of a possible ground of the safety circuit 3 on the side of the terminals 32, 33.
  • the auxiliary power which is introduced by the auxiliary power function H for generating the auxiliary voltage in the subcircuit 53 locally between the connection point 32 and the at least one further connection point 33 in the safety circuit 3, is thus introduced locally by means of electromagnetic induction.
  • the feedback also takes place locally and via a galvanic isolation.
  • the control unit 48 For checking the safety functions A, B, the control unit 48 has a test function T.
  • the detection device 57 is provided locally for the test function T. The evaluation takes place here by the control unit 48.
  • One possible embodiment of a method for testing the safety functions A, B is based on the Fig. 5 described in more detail.
  • Fig. 3 shows a security circuit for the in Fig. 1 illustrated elevator system accordingly a modified embodiment of the invention.
  • the structure of the safety circuit 2 differs from that in Fig. 2 described embodiment in that the detection device 57 is arranged in the primary circuit of the auxiliary power function H or its isolation transformer 50.
  • a first effect is used. An impulse is introduced into the primary circuit of the isolating transformer 50 and a corresponding reflection is awaited. This occurs only when current can flow on the secondary side, that is, when the safety switch 34, 35 is closed. Consequently, if no reflection is detectable or measurable, the safety switch 34, 35 is actually opened. Opening the safety switch 34, 35 accordingly causes a lack of reflection.
  • the control and evaluation of the pulse sequence and the reflection in this case takes place in turn by the control unit 48.
  • another effect is used.
  • a pulse, a pulse sequence or an AC signal on the primary side of the isolating transformer 50 is introduced and a current or an inductance of the primary coil is measured.
  • a higher current, or a smaller inductance shows that current can flow in the secondary side and the safety switch is closed.
  • the control unit 48 in this case controls the pulse sequence and compares the state with the safety switch 34, 35 open and closed with each other and thus checks to what extent the safety switch 34, 35 has actually opened.
  • Fig. 4 shows a safety circuit 2 for in Fig. 1 illustrated elevator installation 1 according to a further embodiment of the invention.
  • the auxiliary voltage is induced in a subcircuit 63 between the connection point 32 and the at least one further connection point 33.
  • the output winding 52 of the isolation transformer 50 between the terminals 32, 33 in a series circuit with the safety switches 34, 35 and the at least one directional diode 55.
  • a separation via at least one capacitor 64, 65 is provided. This means that, during operation of the elevator installation 1, the test taking place via the safety circuit 3 does not lead the current path via the output winding 52.
  • the isolating transformer 50 is in this embodiment, via the capacitors 64, 65 from a DC path between the junction 32 and the at least one other Junction 33 kept out.
  • the detection device 57 is as related to Fig. 2 explained with an input part 58 and an output part 59 is provided. Unlike the execution of Fig. 2 the input part 58m has a coil body 58m, which is integrated directly into the partial circuit 63. A Hall sensor or a magnetic field detector 60m is arranged in the bobbin. The magnetic field detector 60m is used to check the interruption of the circuit and thus a correct opening of the safety switches 34, 35 of the safety functions A, B. This represents an alternative to the optocoupler Fig. 2 The two principles are essentially interchangeable. Further, to simplify the illustration, the control unit 48 is not shown.
  • Fig. 5 shows a signal flow diagram for explaining the operation of a possible embodiment of the safety circuit 2 of the invention.
  • a method for testing the safety functions A, B such tests can be repeated at certain intervals.
  • the auxiliary power functions H, the safety functions A, B and the input signal E which are plotted on the ordinates, are illustrated in binary coded form.
  • the time t is plotted on the abscissa.
  • the power source 62 is permanently turned on. In a modified embodiment, however, the voltage source 62 can also be temporarily switched off between the test procedures. Until the time t 1 , the auxiliary power function H is not needed. Since no auxiliary power is introduced into the safety circuit 3, the photodiode 58 remains de-energized, so that the phototransistor 60 blocks. The input signal E is therefore set to 1 according to the voltage source 62. At the time t 1 , the auxiliary power function H is needed and thus set to 1 in this signal schedule. However, the test function T does not activate any of the safety functions A, B between times t 1 and t 2. Therefore, the safety switches 34, 35 remain closed.
  • auxiliary energy results in an auxiliary voltage which activates the optocoupler 58, 60 via the voltage drop across the at least one directional diode 55.
  • the phototransistor 60 switches to ground, so that the input signal E is set to 0.
  • the safety function A is actuated for testing. This leads to the opening of the first safety switch 34. This means an interruption of the current flow at the input part 58. Accordingly, the input signal E is set to 1.
  • the safety function B is activated, so that in this case the second safety switch 55 interrupts the current flow through the photodiode 58. As a result, the input signal E is reset to 1.
  • a simultaneous actuation of the safety functions A, B can subsequently take place. This is shown here between the times t 6 and t 7 .
  • the current flow through the input part 58 is interrupted, so that the input signal E is set to 1.
  • the auxiliary power function H is deactivated.
  • a local monitoring of the safety circuit 2 can be performed. For example, if a building is not open overnight or between work days and an error occurs during this period, this can be detected promptly during an inspection. In particular, it is checked whether the safety switches 34, 35 open and close the safety circuit as a function of the safety status of the safety functions A, B. If one of the safety switches 34, 35 fails, then this failure is detected, for example, over the test cycle described. A service technician can then correct the error promptly.

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  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)

Claims (14)

  1. Circuit de sécurité (2) pour installations (1) destinées au transport de personnes et/ou de biens, notamment pour installations d'ascenseurs (1), avec une fonction de sécurité (A, B) et un interrupteur de sécurité (34, 35) attribué à la fonction de sécurité (A, B) qui ouvre ou ferme un système de sécurité (3) entre une jonction (32) et une deuxième jonction (33) en fonction du statut de la fonction de sécurité (A, B), sachant qu'une fonction test (T) est prévu pour tester la fonction de sécurité (A, B), cette fonction test vérifiant que l'interrupteur de sécurité (34, 35) puisse ouvrir et fermer le système de sécurité (3) en fonction du statut de la fonction de sécurité (A, B), sachant que la fonction test (T) ouvre et ferme l'interrupteur de sécurité (34, 35), sachant que pour la fonction test (T), il est prévu un dispositif de détection (57), caractérisé en ce que
    une fonction d'énergie auxiliaire (H) est prévue, avec laquelle au moins une tension auxiliaire temporaire en vue de la mise en oeuvre de la fonction test (T) est applicable sur au moins l'interrupteur de sécurité (34, 35) et une partie d'entrée (58, 58m) du dispositif de détection (57) et en ce que la fonction d'énergie auxiliaire (H) apporte une énergie auxiliaire servant à la production de la tension auxiliaire au moyen d'une induction électromagnétique locale entre la jonction (32) et au moins une autre jonction (33) dans le système de sécurité (3).
  2. Circuit de sécurité selon la revendication 1, caractérisé en ce qu'une unité de commande (48) est prévue, celle-ci déclenchant la fonction test (T) et analysant un signal test reçu par le dispositif de détection (57) en conjonction avec la fonction test (T).
  3. Circuit de sécurité selon l'une des revendications 1 ou 2, caractérisé en ce que un transformateur d'isolement (50) est prévu pour la fonction d'énergie auxiliaire (H) et en ce qu'un enroulement de sortie (52) du transformateur d'isolement (50) est actionné entre la jonction (32) et au moins une autre jonction (33) en série avec l'interrupteur de sécurité (34, 35).
  4. Circuit de sécurité selon la revendication 3, caractérisé en ce que
    des diodes de direction (54, 55) sont prévues, celles-ci permettant un circuit électrique fermé sur l'enroulement de sortie (52) du transformateur d'isolement (50) et sur l'interrupteur de sécurité (34, 35) au sein d'un sous-circuit (53) entre la jonction (32) et au moins une autre jonction (33).
  5. Circuit de sécurité selon la revendication 1 ou 2,caractérisé en ce que
    un transformateur d'isolement (50) est prévu pour la fonction d'énergie auxiliaire (H), en ce qu'un enroulement de sortie (52) du transformateur d'isolement (50) est agencé dans un sous-circuit (63) mis en oeuvre entre la jonction (32) et au moins une autre jonction (33) et en ce que le transformateur d'isolement (50) est exclu sur au moins un condensateur (64, 65) du sous-circuit (63) provenant d'une ligne de courant continu entre la jonction (32) et au moins une autre jonction (33).
  6. Circuit de sécurité selon l'une des revendications 1 à 5, caractérisé en ce que le dispositif de détection (57) présente une partie de sortie (59) et en ce que la partie d'entrée (58, 58m) du dispositif de détection (57) et la partie de sortie (59) du dispositif de détection (57) sont séparées galvaniquement l'une de l'autre.
  7. Circuit de sécurité selon la revendication 6, caractérisé en ce que
    le dispositif de détection (57) présente un optocoupleur (58, 60), en ce que la partie d'entrée (58) du dispositif de détection (57) présente un émetteur de rayonnement (58) de l'optocoupleur (58, 60) et en ce que la partie de sortie (59) du dispositif de détection (57) présente un récepteur de rayonnement (60) de l'optocoupleur (58, 60).
  8. Circuit de sécurité selon la revendication 6, caractérisé en ce que
    le dispositif de détection (57) présente un coupleur magnétique (58m, 60m), en ce que la partie d'entrée (58m) du dispositif de détection (57) présente une bobine (58m) du coupleur magnétique (58m, 60m) et en ce que la partie de sortie (59) du dispositif de détection (57) présente un détecteur de champ magnétique (60m) du coupleur magnétique (58m, 60m).
  9. Circuit de sécurité selon l'une des revendications 1 à 6, caractérisé en ce que le dispositif de détection (57) détecte un courant induit dans l'enroulement d'entrée (51) ou dans l'enroulement de sortie (52).
  10. Circuit de sécurité selon l'une des revendications 1 à 9, caractérisé en ce que la fonction de sécurité (A, B) sert à la vérification d'un délai correct pour atteindre le dernier arrêt (12, 13) ou à la vérification d'une porte de cabine d'ascenseur (37) correctement fermée pour un trajet d'une cabine d'ascenseur (4).
  11. Circuit de sécurité selon l'une des revendications 1 à 10, caractérisé en ce que plusieurs fonctions de sécurité (A, B) sont prévues, en ce que plusieurs interrupteurs de sécurité (34, 35) sont prévus pour plusieurs fonctions de sécurité (A, B), en ce que la fonction test (T) est prévue pour la vérification des fonctions de sécurité (A, B), cette fonction test vérifiant si les interrupteurs de sécurité (34, 35) ouvrent et ferment le système de sécurité (3) en fonction du statut des fonctions de sécurité (A, B) et en ce que la tension auxiliaire est applicable sur les interrupteurs de sécurité (34, 35) et sur la partie d'entrée (58) du dispositif de détection (57).
  12. Utilisation d'au moins un circuit de sécurité (2), formé selon l'une des revendications 1 à 11, pour notamment la modernisation d'une installation d'ascenseur (1) existante.
  13. Installation d'ascenseur (1) avec une cabine d'ascenseur (4), un espace de circulation (6) prévu pour un trajet de la cabine d'ascenseur (4) et plusieurs portes palières (16, 17) où au moins un système de sécurité (3) est prévu pour la vérification de la cabine d'ascenseur (4) et/ou des portes palières (16, 17) et où au moins un circuit de sécurité (2) est prévu sur au moins un système de sécurité (3) selon l'une des exigences 1 à 11.
  14. Procédure de vérification d'au moins une fonction de sécurité (A, B) dans des installations destinées au transport de personnes et/ou de biens, qui est effectuée au moyen d'un circuit de sécurité (2) selon l'une des revendications 1 à 11, où l'énergie auxiliaire est introduite dans le système de sécurité (3) pendant une période de test, qui provoque une ouverture de l'interrupteur de sécurité (34, 35) via la fonction test (T), qui détecte l'ouverture du système de sécurité (3) via le dispositif de détection (57), qui provoque une fermeture de l'interrupteur de sécurité (34, 35) via la fonction test (T) et qui détecte la fermeture du système de sécurité (3) via le dispositif de détection (57).
EP15794182.4A 2014-12-17 2015-11-13 Dispositif de commutation de sécurité pour une installation d'ascenseur Active EP3233694B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14198526 2014-12-17
PCT/EP2015/076499 WO2016096269A1 (fr) 2014-12-17 2015-11-13 Circuit de sécurité pour une installation d'ascenseur

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EP3233694A1 EP3233694A1 (fr) 2017-10-25
EP3233694B1 true EP3233694B1 (fr) 2019-01-23

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US (1) US10526169B2 (fr)
EP (1) EP3233694B1 (fr)
CN (1) CN107250018B (fr)
ES (1) ES2713174T3 (fr)
WO (1) WO2016096269A1 (fr)

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Publication number Publication date
WO2016096269A1 (fr) 2016-06-23
US10526169B2 (en) 2020-01-07
EP3233694A1 (fr) 2017-10-25
CN107250018A (zh) 2017-10-13
US20170341906A1 (en) 2017-11-30
CN107250018B (zh) 2019-05-31
ES2713174T3 (es) 2019-05-20

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