EP3393954B1 - Dispositif de surveillance pour une installation de transport de personnes, procede de verification et installation de transport de personnes - Google Patents

Dispositif de surveillance pour une installation de transport de personnes, procede de verification et installation de transport de personnes Download PDF

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Publication number
EP3393954B1
EP3393954B1 EP16809421.7A EP16809421A EP3393954B1 EP 3393954 B1 EP3393954 B1 EP 3393954B1 EP 16809421 A EP16809421 A EP 16809421A EP 3393954 B1 EP3393954 B1 EP 3393954B1
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EP
European Patent Office
Prior art keywords
sensor
microprocessor
control unit
code
signals
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EP16809421.7A
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German (de)
English (en)
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EP3393954A1 (fr
Inventor
Astrid Sonnenmoser
Kurt Heinz
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Inventio AG
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Inventio AG
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    • 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
    • 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
    • B66B1/3415—Control system configuration and the data transmission or communication within the control system
    • B66B1/3446—Data transmission or communication within the control system
    • 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

Definitions

  • the invention relates to a monitoring device for a passenger transport system, in particular an escalator, a moving walk or an elevator system, a test method for the monitoring device and a passenger transport system with such a monitoring device.
  • Passenger transport systems of the aforementioned type include a control device that processes operationally relevant signals of the passenger transport system and controls the drive motor taking into account the operationally relevant signals.
  • Operational signals come e.g. from the main switch of the passenger transport system, from various sensors, pulse generators, encoders and the like and from user interfaces via which the users can make inputs.
  • the control device comprises at least one computing unit, a working memory and a non-volatile memory with a control program which is required for controlling and / or regulating the passenger transport system. Furthermore, such a control device can contain interfaces and input modules necessary for the maintenance of the passenger transport system and the diagnostics and can have a power supply unit for the voltage supply.
  • Passenger transport systems also regularly include a security system, which allows the detection of unauthorized or critical states of the passenger transport system using sensors and, if necessary, initiates suitable measures, such as switching off the system.
  • Safety circuits are often provided, in which several safety elements or sensors, such as safety contacts and safety switches, are arranged in a series circuit. The sensors monitor, for example, whether a shaft door or a car door of an elevator system is opened. The passenger transport system can only be operated if the safety circuit and thus all safety contacts integrated in it are closed. Some of the sensors are operated by the doors. Other sensors, such as a drive-over switch, are actuated or triggered by moving parts of the system.
  • the safety circuit is connected to the drive or the brake unit of the passenger transport system in order to interrupt driving if the safety circuit is opened.
  • Security systems with security circuits have various disadvantages. Due to the length of the connections, an undesirably high voltage drop can occur in the safety circuit. The individual safety contacts are relatively susceptible to faults; which is why unnecessary emergency stops can occur. The safety circuit also does not allow specific diagnosis; since when the safety circuit is open it cannot be determined which sensor or switch caused the opening. It has therefore been proposed not to equip passenger transport systems with a safety circuit, but with a monitoring device which comprises a bus system.
  • the WO 201/3020806 A1 describes a monitoring device with a control unit and at least one bus node.
  • This bus node has a first microprocessor and a second microprocessor.
  • the control unit and the bus node communicate via a bus.
  • the first microprocessor and the second microprocessor are connected without interruption via a signal line.
  • a test method for checking the bus node comprises the following steps: a control signal is transmitted from the control unit to the first microprocessor, the first microprocessor transmits the signal to the second microprocessor and the second microprocessor provides the signal for the control unit. Finally, the control unit verifies whether the signal provided corresponds to a signal expected by the control unit.
  • the WO03 / 107295 A1 shows a monitoring device equipped with a bus system, with which the states of peripheral devices, for example components of an elevator system, can be monitored.
  • the bus system has a bus, a central control unit, which is connected to the bus, and several peripheral devices. Each of these devices is located on a bus node and communicates with the control unit via the bus.
  • the peripheral devices assume a certain state at all times.
  • the control unit periodically polls the status of each peripheral device via the bus.
  • the periodic polling of the status of the peripheral devices via the bus has a disadvantageous effect. Since the control unit actively polls each peripheral device, the bus transmits two signals or data packets per polling and peripheral device, a polling signal and a response signal. In the case of relatively short polling cycles, especially in the case of large numbers of peripheral devices relevant to security, a large number of signals are exchanged between the control unit and the peripheral devices. This means that the control unit must have high computing capacities in order to process all signals. In addition, the bus is heavily loaded and sets high to transmit all status queries Signal transmission capacities ready. Accordingly, the control unit and the bus are expensive. Due to the limited capacity, the number of bus nodes that can be integrated into the bus system is also very limited.
  • the WO2010 / 097404 A1 discloses a monitoring device with a control unit, a bus and bus nodes connected to it, each having a first microprocessor, which monitors the state of a sensor and, when the state of the sensor changes, spontaneously transmits a state change notification via the bus to the control unit. Due to the spontaneous reporting of the changes in status from the bus nodes to the control unit, the monitoring of the status of the sensors at the bus nodes can be dispensed with in this monitoring device. Data traffic on the bus is drastically reduced. If a bus node is connected to a sensor that monitors the condition of part of a passenger transport system, e.g. a manhole cover, which is only opened when maintenance is required, the condition does not have to be queried every few seconds, but is reported spontaneously if the Maintenance is done.
  • a bus node is connected to a sensor that monitors the condition of part of a passenger transport system, e.g. a manhole cover, which is only opened when maintenance is required, the condition does
  • a control module is provided in each bus node, which is implemented in the first or in a second microprocessor.
  • the control unit transmits an instruction via the bus to the control module at relatively large time intervals to interrupt the signal transmission from the sensor to the first microprocessor, so that the first microprocessor detects a change in status and sends a status message to the control unit.
  • a switch is used in the transmission line between the sensor and in the first microprocessor, by means of which the signal transmission can be interrupted.
  • the switch is arranged in a power supply line connected to the sensor, so that the power supply can be interrupted. A change in the state of the sensor can be caused by actuating the switch installed in this way.
  • a disadvantage of this solution is the relatively large amount of circuitry required by installing an additional switch.
  • the switch itself is in turn a source of error, which can also cause an error condition in the event of a defect. Due to conspicuous transmission losses, it is also undesirable to include a switch in a transmission line. The operation of the switch also takes time, which is generally undesirable. It should also be noted that energy is required to operate the switch which may not be available to the extent required if the bus nodes are powered via the bus.
  • the present invention is therefore based on the object of providing an improved monitoring device for a passenger transport system, a test method for the monitoring device and a passenger transport system with such a monitoring device.
  • the monitoring device which is used to monitor a passenger transport system, comprises at least one sensor, a control unit, a bus, at least one bus node connected to the bus, which has a first microprocessor and a control unit which is implemented in the first microprocessor or in a second microprocessor. Furthermore, communication means are provided in the control unit, in the first microprocessor and in the control unit, by means of which data can be transmitted at least from the control unit to the control unit and from the first microprocessor to the control unit.
  • a first program module is also provided in the first microprocessor, by means of which a change in state of the sensor connected via a transmission line to an input of the first microprocessor can be detected and a corresponding state message can be spontaneously transmitted to the control unit.
  • control unit comprises a second program module which is designed such that, after receiving an instruction from the control unit, an activation signal can be transmitted to a coupling point within the bus node, the activation signal being superimposed on a sensor signal and / or being coupled into a power supply line connected to the sensor , A change in the state of the sensor can thus be simulated without interrupting a line in the form of a signal and / or power supply line.
  • a signal line is to be understood as any line in the form of a physical cable that can transmit digital or analog signals.
  • the control unit does not continuously query the status signals received by the first microprocessor. As long as the first microprocessor is functional, it is sufficient if one occurs Status change of the sensor, which, for example, indicates a potentially dangerous status of the passenger transport system, a status message is transmitted to the control unit. This reduces the number of signals to be transmitted and processed. More cost-effective bus systems can therefore be used.
  • control unit sends instructions to the bus nodes at longer time intervals, by means of which changes in the state of the sensor are simulated and status messages are provoked.
  • control unit does not receive a status message from the relevant bus node after sending the instruction, it can be assumed that at least the first microprocessor or the control unit, which is implemented in the first or a second microprocessor, or in a further component, has malfunctioned and the status monitoring has not is more certain.
  • control unit After receiving the instruction from the control unit, e.g. a telegram or a data frame with the address of the relevant bus node, the control unit triggers the activation signal or the activation signals and transmits them to the coupling point within the bus node.
  • the control unit After receiving the instruction from the control unit, e.g. a telegram or a data frame with the address of the relevant bus node, the control unit triggers the activation signal or the activation signals and transmits them to the coupling point within the bus node.
  • the sensor is designed such that digital sensor signals, such as an identification code, and / or analog sensor signals are emitted at its output and are monitored in the first microprocessor for the occurrence of a change in state. Changes in the state of the sensor are e.g. the loss or change of an applied code, a logic signal, an AC signal, a serial or parallel data stream or a significant change in a voltage level.
  • the control unit is designed such that digital activation signals and / or analog activation signals are emitted at its output, such as direct voltage pulses, logic signals, alternating voltage signals, preferably alternating voltage signals in the frequency range from 500 Hz to 2000 Hz.
  • a short-term effect of the activation signals on the coupling point in that the activation signal is superimposed on the sensor signal and / or is coupled into a power supply line connected to the sensor, changes the state of the sensor signals Input of the first microprocessor caused, which is subsequently reported to the control unit.
  • the bus node With a short activation signal, the bus node can be checked quickly and efficiently.
  • the control unit can address all bus nodes sequentially and cause the control units there to emit an activation signal in order to bring about the desired change in state. It is not necessary to install a switch that has to be opened and closed again and that e.g. can cause malfunctions or even fail completely due to bouncing, aging, oxidation.
  • the inspection of the bus node can therefore be carried out easily with less effort, in the shortest possible time and without any further risks.
  • the coupling point is e.g. arranged within the output stage of the sensor or within the input stage of the first microprocessor or between the output stage of the sensor and the input stage of the first microprocessor.
  • the activation signals are thus superimposed on the sensor signal, which simulates a change in the state of the sensor.
  • the coupling point can also be arranged at the input of the sensor or within the sensor if electrical signals occur there.
  • the activation signals typically have the maximum effect at the input or inside the sensor.
  • Such electrical signals can also be referred to as sensor signals.
  • the activation signals can also be coupled into the power supply lines connected to the sensor. This can also cause instability of the sensor, which is perceived as a change in state.
  • the at least one coupling point can be designed in different ways and can therefore be adapted to the respective needs.
  • the coupling point and thus the monitoring device according to the invention are therefore very flexible.
  • the at least one coupling point can be designed as a galvanic connection or have at least one coupling capacitor for capacitive coupling, or at least one coil for inductive coupling.
  • the activation signals can therefore be coupled in in a simple manner.
  • the activation signals can also be used to change the data or change the code. For example, At least one data bit is changed so that the first microprocessor recognizes a data change or change of state and reports this to the control unit.
  • the coupling point can advantageously be constructed as a logic circuit in which the digital sensor signals and the digital activation signals are linked to one another.
  • the logic circuit is preferably an inverter which can be switched over by means of the activation signals. For example, there is an EXOR gate for each data bit of the sensor signal. The data bit is applied to one input and the activation signal to the other input of the EXOR gate.
  • the sensor signal can be optionally inverted by switching the activation signal from logic "0" to logic "1".
  • the control unit can determine from which bus node the status message has arrived and whether the status message is due to an actual one or a simulated change in status was triggered in this bus node.
  • the monitoring device is suitable for monitoring any sensors. It is particularly advantageous to use sensors that comprise at least one code-carrying element and at least one code-reading element, so that the code-reading element can read an identification code from the code-carrying element without contact and send it to the first microprocessor.
  • the coupling point can advantageously be arranged at the input or at the output of the code-reading element.
  • the code-carrying element and the code-reading element preferably each have an induction loop, the code-reading element supplying the code-carrying element by means of the two induction loops without contact with electromagnetic energy and the code-carrying element transmitting its identification code by means of the two induction loops without contact to the code-reading element.
  • the activation signals can advantageously be coupled galvanically or inductively into one of the two induction loops.
  • At least one code-carrying element and at least one code-reading element are the bus node in a passenger transport system assigned.
  • the code-reading element reads an identification code from the code-carrying element without contact and sends a signal to the first microprocessor.
  • the code-carrying element and the code-reading element preferably each have an induction loop.
  • the code-reading element supplies the code-carrying element with electromagnetic energy without contact by means of the two induction loops.
  • the code-carrying element transmits its identification code to the code-reading element without contact by means of the two induction loops.
  • the monitoring device allows contactless condition monitoring of system components.
  • the sensors with the code-carrying and the code-reading element hardly wear out during operation, as a result of which maintenance costs are reduced and monitoring security can be increased.
  • Fig. 1 shows a first embodiment of the monitoring device, which can be used advantageously in a passenger transportation system.
  • the monitoring device comprises a control unit 10 which communicates with at least one bus node 30 via a bus 9.
  • the control unit 10, the bus 9 and the at least one bus node 30 form a bus system within which each bus node 30 has a unique, identifiable address. This address can be used to transmit signals, in particular control commands, from the control unit 10 specifically to a specific bus node 30. Likewise, signals arriving at the control unit 10 can be clearly assigned to a bus node 30.
  • Data can therefore be sent in both directions via bus 9 between bus node 30 and control unit 10. With this data, changes in status can be reported to the control unit 10, which changes are detected by a sensor 8. When changes in state occur, corresponding messages are spontaneously transmitted from node 30 to the control unit. The control unit 10 therefore does not have to carry out periodic queries in order to determine changes in state that have occurred, but is spontaneously notified by the bus node 30. If no changes in state occur, no corresponding data are to be transmitted via bus 9. The data traffic via the bus 9 is therefore significantly reduced. Only for checking the bus nodes 30 does the control unit 10 regularly send instructions to these bus nodes 30 in order to provoke a change in state which results in a message. By sending an instruction and the Receiving a corresponding status change message, the integrity of the bus nodes and the entire bus system can be checked regularly.
  • the bus node 30 has a first microprocessor 4, by means of which status change messages can be transmitted to the control unit 10. Furthermore, a control unit in the form of a second microprocessor 5 is provided, which receives control commands or instructions from the control unit 10, by means of which tests are triggered. Corresponding program modules and communication means are provided in the two microprocessors 4 and 5 in order to be able to fulfill the stated tasks.
  • the two microprocessors 4, 5 can be configured both physically and virtually. With two physically configured microprocessors 4, 5 e.g. two microprocessors 4, 5 arranged on a die. In an alternative embodiment, the two microprocessors 4, 5 can each be implemented on their own die. However, only one microprocessor 4 can be physically present. In this case, a second microprocessor 5 or the control unit can be configured virtually by means of software on the first physically present microprocessor 4.
  • sensors 8 are shown, which comprise a code-carrying element 1 and a code-reading element 3.
  • the code-carrying element 1 is preferably an RFID tag 1 and the code-reading element 3 is an RFID reader 3.
  • the person skilled in the art has other technical options available for realizing a contactless transmission of an identification code between a code-carrying and code-reading element.
  • combinations of code-bearing or code-reading elements 1, 3 can also be used alternatively as barcode carriers and laser scanners, loudspeakers and microphones, magnetic tapes and Hall sensors, magnets and Hall sensors, or light sources and light-sensitive sensors.
  • Both the RFID tag 1 and the RFID reader 3 each have an induction loop 2.1, 2.2.
  • the RFID reader 3 supplies the RFID tag 1 with electromagnetic energy by means of these induction loops 2.1, 2.2.
  • the RFID reader 3 is connected to a current or voltage source Vcc.
  • Vcc a current or voltage source
  • the RFID tag 1 sends an identification code stored on the RFID tag 1 to the RFID reader 3 via the induction loops 2.1, 2.2.
  • the energy supply Vcc of the RFID tag 1 is only ensured, if the RFID tag 1 is in close proximity below a critical distance from the RFID reader 3 and the induction loop 2.1 of the RFID tag 1 can be excited by the induction loop 2.2 of the RFID reader 3.
  • the energy supply of the RFID tag 1 thus only works below a critical distance from the RFID reader 3. If the critical distance is exceeded, the RFID tag 1 does not draw enough energy to maintain the transmission of the identification code on the RFID reader 3 ,
  • the RFID reader 3 transmits the received identification code via a data conductor 6 to the first microprocessor 4, which compares the identification code with a list of identification codes stored on a storage unit. In this comparison, the microprocessor 4 calculates a status value in accordance with the stored rules as a function of the identification code. This status value can have a positive or a negative value. A negative status value is e.g. generated if no identification code or an incorrect identification code is transmitted to the microprocessor 4.
  • the microprocessor 4 sends a status change message to the control unit 10 via the bus 9.
  • This status change message contains at least the address of the bus node 30 and preferably the identification code of the detected RFID tag 1. Thanks to the communicated address, the control unit 10 is in able to locate the origin of the negative state value and initiate an appropriate response.
  • the bus node 30 monitors the status of a shaft door, for example.
  • the RFID tag 1 and the RFID reader 3 are arranged in the area of the shaft doors in such a way that when the shaft door is closed, the distance between the RFID tag 1 and the RFID reader 3 is below the critical distance.
  • the microprocessor 4 thus receives the identification code from the RFID reader 3 and generates a positive status value. If the shaft door is opened, the RFID tag 1 and the RFID reader 3 exceed the critical distance. Since the RFID tag 1 is no longer supplied with electrical energy by the RFID reader 3, the RFID tag 1 stops sending its identification code and the microprocessor 4 generates a negative status value. Accordingly, the microprocessor 4 sends a status change message to the control unit 10.
  • the control unit 10 locates the open shaft door based on the address of the bus node 30. If this shaft door is illegally open, for example if there is no elevator car in the shaft door area, the control unit 10 initiates a reaction in order to bring the elevator system into a safe state.
  • the state of any components such as door locks, cover locks, emergency stop switches, or travel switches, a passenger transport system, in particular an escalator or an elevator system, can thus be monitored.
  • sensors 8 can be used which operate according to different physical principles and whose changes in state are reported to the control unit 10 in a different way.
  • the invention is not dependent on data transmission protocols which are used for the bus system mentioned.
  • the invention is not dependent on the type of evaluation of the sensor signals, which can be compared with any reference values and threshold values in order to determine a change in state.
  • the transmission of an identification code from the sensor 8 to the first microprocessor 4 is advantageous, but not absolutely necessary.
  • the safe operation of the bus node 30 primarily depends on the functionality of the microprocessor 4.
  • the bus node 30 is therefore regularly tested by the control unit 10 in order to check the spontaneous transmission behavior of the microprocessor 4 when a change in the state of the sensor 8 occurs.
  • the control unit 10 sends a control command or an instruction via the bus 9 to the control unit 5 or the second microprocessor 5 in order to trigger or simulate a change in the state of the sensor 8, which causes the first microprocessor 4 to send a state change message.
  • a coupling point 31 is provided in the circuit arrangement of the bus node 30, into which an activation signal can be coupled galvanically, capacitively or inductively.
  • the activation signal is generated by the control unit, for example by the second microprocessor 5, and transmitted via a connecting line 51 to the coupling point 31, which in the configuration of Fig. 1 is arranged in a transmission line 6, which connects the output of the sensor 8 to the input of the first microprocessor 4.
  • a second connecting line 52 is shown in dotted lines, via which activation signals can be transmitted into the sensor 8 to the second coupling coil 2.2 (the coupling point is not shown).
  • the signals emitted by the sensor 8 are superimposed by the activation signal.
  • the identification code is transmitted serially over the transmission line 6 as a pulse sequence.
  • the activation signal turns at least one of the data bits of the pulse train changed, which is why the expected identification signal does not arrive in the first microprocessor 4 and a change in state is determined.
  • the first coupling point 31 can also be constructed as circuit logic, to which the sensor signal is supplied at a first input and the activation signal at a second input. For example, the data bits of the identification code are fed to a first input of each EXOR gate, at whose second input the activation signal is present. As soon as the activation signal is set to logic "1", the identification code is inverted by the EXOR logic. The first microprocessor 4 can therefore transmit the inverted identification code to the control unit 10 instead of the identification code. The control unit 10 therefore recognizes in each case whether the bus node 30 reports a spontaneous or a simulated change in state.
  • the test is carried out in a recurring manner for each bus node 30. Since the control unit 10 cannot recognize any real information about the state of the tested bus node 30 during the test, the test time is kept as short as possible and the test is carried out only as often as necessary. The frequency of the tests depends primarily on the probability of failure of the overall system. The more reliably the overall system works, the less frequently it can be tested so that safe condition monitoring of an elevator component remains guaranteed. As a rule, the test is carried out at least once a day.
  • the method according to the invention enables the test to be carried out within a very short time, since the deletion of a single data bit of the identification code or a brief pulse-like disturbance of the sensor signal is sufficient to simulate a change in state. Opening and closing a switch and the problems associated with the switch are avoided.
  • bus node 30 Further exemplary embodiments of the monitoring device, in particular of the bus node 30, are described below. Since the basic structure of the bus node 30 and the mode of operation of the bus components 1 to 5 are comparable in these exemplary embodiments, the differences in the structure and mode of operation of the different bus nodes 30 are essentially explained.
  • Fig. 2 shows the monitoring device of Fig. 1 with a coupling point 32 in the power supply line 71, 72 of the sensor 8.
  • the function of the sensor 8 is briefly disturbed by the second microprocessor 5 via the connecting line 53 into the power supply line 71, 72, which is why a change in state occurs which is detected in the first microprocessor 4.
  • the disturbance can in turn be caused in a very short time with minimal effort.
  • Fig. 3 shows a third embodiment of the monitoring device.
  • the output signal of the sensor 8 is transmitted to the first microprocessor 4 via a first transmission line 11, which is provided with a first coupling point 33, and to the second microprocessor 5 via a second transmission line 11 ', which is provided with a second coupling point 34 .
  • the output signal of the sensor 8 or the transmitted identification code can be evaluated redundantly by both microprocessors 4, 5. If at least one of the two microprocessors 4, 5 generates a negative status value, the bus node 30 transmits a status change message to the control unit 10.
  • An advantage of this configuration is the redundant and thus very reliable evaluation of the sensor signal, for example the identification code.
  • activation signals can be transmitted from the first microprocessor 4 to the second coupling point 34 and from the second microprocessor 5 to the first coupling point 33.
  • the microprocessor 4, 5 which triggers the activation signals continues to read the real identification code of the RFID tag 1.
  • the bus node 30 thus remains able to recognize actual changes in state and send status change messages to the control unit 10.
  • the control unit 10 can therefore differentiate between simulated and actual state changes when two state change messages are met.
  • Fig. 4 and Fig. 5 show a fourth and fifth embodiment of the monitoring device.
  • the output signal of the sensor is transmitted to the two microprocessors 4, 5 via redundant lines 12, 12 'or 13, 13' for redundant evaluation.
  • control unit 10 for checking the bus node 30 sends a control command to the second microprocessor 5 in order to trigger the delivery of an activation signal to the coupling point 35, which is integrated in the power supply line 72.
  • the function of the sensor 8 is briefly disturbed by the activation signal being impressed on the power supply line 71, 72, which is why a change in state occurs, which is detected in the first microprocessor 4.
  • the disturbance can in turn be caused within a very short time with minimal effort.
  • a first coupling point 36 which is controlled by the first microprocessor 4
  • a second coupling point 37 which is controlled by the second microprocessor 5
  • the state of the sensor 8 changes, e.g. if the identification code signal is absent
  • both the first and the second microprocessor 4, 5 send a status change message to the control unit 10.
  • the output signals from 2 sensors 8a, 8b are transmitted to at least one of the microprocessors 4, 5 via different transmission lines.
  • the coupling points used to check the bus node are arranged at different points within the switch arrangements 30.
  • the sensors 8a, 8b have corresponding code-carrying elements 1a, 1b, code-reading elements 3a, 3b and induction loops 2.1a, 2.2a, 2.1b, 2.2b.
  • the functioning of the sensors is analogous to that of the sensors of the exemplary embodiments from FIGS 1 to 5
  • the code-reading elements 3a, 3b are analogous to the power supply lines 71, 72 of the previous exemplary embodiments according to FIGS 1 to 5 fed.
  • the first sensor 8a is connected to the first microprocessor 4 via a first transmission line 14 and the second sensor 8b is connected to the second microprocessor 5 via a second transmission line 15.
  • a first coupling point 38 is provided in the first transmission line 14, to which activation signals from the second microprocessor 5 can be fed.
  • a second coupling point 39 is provided in the second transmission line, to which activation signals from the first microprocessor 4 can be fed.
  • Fig. 7 shows the monitoring device of Fig. 6 with a first coupling point 40, which is controlled by the second microprocessor 5, in a power supply line of the first sensor 8a and a second coupling point 41, which is controlled by the first microprocessor 4, in a power supply line of the second sensor 8b.
  • the change in state of sensors 8a and 8b is therefore caused by impairment of the power supply.
  • the first sensor 8a is connected to the first microprocessor 4 via a first transmission line 16 and the second sensor 8b is connected to the second microprocessor 5 via a second transmission line 17.
  • both microprocessors 4, 5 send activation signals to a single coupling point 42, which is provided in a power supply line common to both sensors 8a, 8b.
  • the first sensor 8a is connected to the first microprocessor 4 via a first transmission line 18 and the second sensor 8b is connected to the second microprocessor 5 via a second transmission line 19.
  • Fig. 9 shows an embodiment in which the output signals from two sensors 8a, 8b are transmitted to the first microprocessor 4 via a common transmission line 20.
  • the second microprocessor 5 tests the functionality of the first microprocessor 4 by transmitting activation signals to a coupling point 43 which is integrated in the transmission line 20.
  • a coupling point 44 which is controlled via a second connection line (see the dotted line), is provided in a common power supply line of the sensors 8a, 8b
  • Embodiments of monitoring devices are also shown, which have two sensors 8a, 8b, the output signals of which are routed redundantly to the first and second microprocessors 4, 5.
  • Fig. 10 shows the monitoring device of Fig. 6 , in which both sensors 8a, 8b are each connected to the first microprocessor 4 via a first transmission line 21 and to the second microprocessor 5 via a second transmission line 22.
  • a first coupling point 45, which can be supplied with activation signals by the second microprocessor 5, is provided in the first transmission line 21 and a second coupling point 46, which can be supplied with activation signals by the first microprocessor 4, is provided in the second transmission line 22.
  • Fig. 11 shows the monitoring device of Fig. 10 with only one coupling point 47, which is arranged in a common power supply line of the two sensors 8a, 8b and can be acted upon by activation signals from both microprocessors 4, 5.
  • the first sensor 8a and the second sensor 8b are furthermore each connected to the first microprocessor 4 via a first transmission line 23 and to the second microprocessor 5 via a second transmission line 24.
  • Fig. 12 shows the monitoring device of Fig. 11 with a first coupling point 48, which can be supplied with activation signals by the second microprocessor 5, in a power supply line of the first sensor 8a and with a second coupling point 49, which can be supplied with activation signals by the first microprocessor 4, in a power supply line of the second sensor 8b. Changes in state can therefore be provoked individually, simultaneously or alternately on both sensors 8a, 8b.
  • the first sensor 8a and the second sensor 8b are further connected to the first microprocessor 4 via a first transmission line 25 and to the second microprocessor 5 via a second transmission line 26.
  • the two microprocessors 4 and 5 can preferably communicate with the control unit 10 independently of one another and preferably have different addresses for this purpose.
  • the control unit 10 can therefore check the one and the other microprocessor 4 or 5 sequentially, while the other microprocessor 5 or 4 monitors the associated sensor 8b or 8a.
  • the circuit can be adapted accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Alarm Systems (AREA)

Claims (15)

  1. Dispositif de surveillance d'une installation de transport de personnes comprenant au moins un capteur (8), une unité de commande (10), un bus (9), au moins un nœud de bus (30) relié au bus (9), lequel nœud de bus comprend un premier microprocesseur (4) et une unité de contrôle (5), comportant des moyens de communication prévus dans l'unité de commande (10), dans le microprocesseur (4) et dans l'unité de contrôle (5), et au moyen desquels des données peuvent être transmises au moins de l'unité de commande (10) à l'unité de contrôle (5) et du premier microprocesseur (4) à l'unité de commande (10), et comportant un premier module de programme dans le premier microprocesseur (4), au moyen duquel un changement d'état du capteur (8) relié à une entrée du premier microprocesseur (4) par une ligne de transmission (6) peut être détecté et un message d'état correspondant peut être transmis spontanément à l'unité de commande (10), l'unité de contrôle (5) comportant un second module de programme qui est conçu de telle sorte que, après réception d'une instruction provenant de l'unité de commande (10) à un point de couplage (31, ..., 49) à l'intérieur du nœud de bus (30), un signal d'activation peut être transmis, au moyen duquel un changement d'état du capteur (8) peut être simulé, caractérisé en ce que le signal d'activation est superposé à un signal du capteur et/ou couplé à une ligne d'alimentation électrique (72) reliée au capteur (8).
  2. Dispositif de surveillance selon la revendication 1, caractérisé en ce que l'unité de contrôle est réalisée dans le premier microprocesseur (4) ou dans un second microprocesseur (5).
  3. Dispositif de surveillance selon la revendication 1 ou 2, caractérisé en ce que le capteur (8) est conçu de telle sorte que des signaux de capteur numériques, tels qu'un code d'identification et/ou des signaux de capteur analogiques qui peuvent être surveillés dans le premier microprocesseur (4) par rapport à la survenue d'un changement d'état, sont délivrés à sa sortie.
  4. Dispositif de surveillance selon la revendication 1, 2 ou 3, caractérisé en ce que l'unité de contrôle (5) est conçue de telle sorte que des signaux d'activation numériques et/ou des signaux d'activation analogiques, tels que des impulsions de tension continue, des signaux logiques, des signaux de tension alternative, de préférence des signaux de tension alternative dans la plage de fréquences comprise entre 500 et 2 000 Hz, sont délivrés à sa sortie.
  5. Dispositif de surveillance selon l'une des revendications 1 à 4, caractérisé en ce que le point de couplage (31, ..., 49)
    a) est disposé dans l'étage de sortie du capteur (8) ou dans l'étage d'entrée du premier microprocesseur (4) ou entre l'étage de sortie du capteur (8) et l'étage d'entrée du premier microprocesseur (4) ; ou
    b) est disposé à l'entrée du capteur (8) ou dans le capteur (8) ; ou
    c) est disposé à l'intérieur d'une ligne d'alimentation électrique (71, 72) reliée au capteur (8).
  6. Dispositif de surveillance selon la revendication 5, caractérisé en ce que l'au moins un point de couplage (31, ..., 49) présente une liaison galvanique pour le couplage galvanique, au moins un condensateur de couplage pour le couplage capacitif ou au moins une bobine pour le couplage inductif des signaux d'activation.
  7. Dispositif de surveillance selon la revendication 5, caractérisé en ce que l'au moins un point de couplage (31, ...., 49) est un circuit logique dans lequel les signaux numériques du capteur et les signaux d'activation numériques peuvent être reliés entre eux, le circuit logique étant de préférence un onduleur qui peut être commuté au moyen des signaux d'activation.
  8. Dispositif de surveillance selon l'une des revendications 1 à 7, caractérisé en ce que le capteur (8) comprend au moins un élément porteur de code (1) et au moins un élément de lecture de code (3), et en ce que l'élément de lecture de code (3) lit, sans contact, un code d'identification de l'élément porteur de code (19), et l'élément de lecture de code (3) envoie un signal au premier microprocesseur (4), et le point de couplage (31, ..., 49) étant de préférence disposé à l'entrée ou à la sortie de l'élément de lecture de code (3).
  9. Dispositif de surveillance selon la revendication 8, caractérisé en ce que l'élément porteur de code (1) et l'élément de lecture de code (3) présentent chacun une boucle d'induction (2.1, 2.2), l'élément de lecture de code (3) utilisant les deux boucles d'induction (2.1, 2.2) pour alimenter, sans contact, l'élément porteur de code (1) en énergie électromagnétique, et l'élément porteur de code (1) transmet son code d'identification sans contact à l'élément de lecture de code (3) au moyen des deux boucles d'induction (2.1, 2.2).
  10. Procédé de test d'un dispositif de surveillance selon l'une des revendications 1 à 9, le dispositif comprenant au moins un capteur (8), une unité de commande (10), un bus (9) comportant au moins un nœud de bus (30), qui comprend un premier microprocesseur (4) et une unité de contrôle (5), et des moyens de communication prévus dans l'unité de commande (10), dans le premier microprocesseur (4) et dans l'unité de contrôle (5), et au moyen desquels des données peuvent être transmises au moins de l'unité de commande (10) à l'unité de contrôle (5) et commandées par un premier module de programme du premier microprocesseur (4) à l'unité de commande (10), des changements d'état du capteur (8) relié à une entrée du premier microprocesseur (4) par une ligne de transmission (6) étant détectés par le premier module de programme et des messages d'état correspondants étant transmis spontanément à l'unité de commande (10), l'unité de contrôle (5) comportant un second module de programme qui est conçu de telle sorte que, après réception d'une instruction de l'unité de commande (10), un signal d'activation est transmis à un point de couplage (31, ..., 49) à l'intérieur du nœud de bus (30), au moyen duquel un changement d'état du capteur (8) est simulé, caractérisé en ce que le signal d'activation est superposé à un signal capteur et/ou couplé à une ligne d'alimentation électrique (72) reliée au capteur (8).
  11. Procédé de test selon la revendication 10, caractérisé en ce que l'unité de contrôle (5) envoie des signaux d'activation numériques et/ou des signaux d'activation analogiques au point de couplage (31, ..., 49), qui
    a) est disposé dans l'étage de sortie du capteur (8) ou dans l'étage d'entrée du premier microprocesseur (4) ou entre l'étage de sortie du capteur (8) et l'étage d'entrée du premier microprocesseur (4) ; ou
    b) est disposé à l'entrée du capteur (8) ou dans le capteur (8) ; ou
    c) est disposé à l'intérieur d'une ligne d'alimentation électrique (71, 72) reliée au capteur (8).
  12. Procédé de test selon la revendication 10 ou 11, caractérisé en ce que les signaux d'activation sont couplés au point de couplage (31, ...., 49) par une liaison galvanique, au moins un condensateur de couplage ou au moins une bobine.
  13. Procédé de test selon la revendication 10 ou 11, caractérisé en ce que l'au moins un point de couplage (31, ...., 49) est un circuit logique dans lequel les signaux numériques du capteur et les signaux d'activation numériques sont reliés entre eux.
  14. Procédé de test selon la revendication 13, caractérisé en ce que le point de couplage (31) est un onduleur qui peut être commuté au moyen des signaux d'activation.
  15. Installation de transport de personnes comportant un dispositif de surveillance conformément à l'une des revendications 1 à 9.
EP16809421.7A 2015-12-21 2016-12-14 Dispositif de surveillance pour une installation de transport de personnes, procede de verification et installation de transport de personnes Active EP3393954B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15201447 2015-12-21
PCT/EP2016/080965 WO2017108525A1 (fr) 2015-12-21 2016-12-14 Dispositif de surveillance d'un système de transport de personnes, procédé de contrôle et système de transport de personnes

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EP3393954A1 EP3393954A1 (fr) 2018-10-31
EP3393954B1 true EP3393954B1 (fr) 2020-02-05

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US (1) US11365088B2 (fr)
EP (1) EP3393954B1 (fr)
CN (1) CN108367891B (fr)
AU (1) AU2016376176B2 (fr)
ES (1) ES2783349T3 (fr)
HK (1) HK1251538A1 (fr)
WO (1) WO2017108525A1 (fr)

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ES2783349T3 (es) * 2015-12-21 2020-09-17 Inventio Ag Dispositivo de supervisión para una instalación de transporte de personas, método de prueba e instalación de transporte de personas
US20210032077A1 (en) * 2018-04-24 2021-02-04 Inventio Ag Position-determining system and method for ascertaining a car position of an elevator car
EP3608279A1 (fr) * 2018-08-10 2020-02-12 Otis Elevator Company Dispositif et procédé de surveillance du mouvement d'une porte d'ascenseur à l'aide de rfid
TWI811493B (zh) * 2018-12-12 2023-08-11 瑞士商伊文修股份有限公司 用於交換乘客運輸系統中的組件之方法及使用於此目的的裝置
EP3986822A1 (fr) * 2019-06-21 2022-04-27 Inventio AG Dispositif de raccordement d'un dispositif de commande d'une installation de transport de personnes
EP3904255A1 (fr) * 2020-04-30 2021-11-03 KONE Corporation Système d'ascenseur

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US11365088B2 (en) 2022-06-21
WO2017108525A1 (fr) 2017-06-29
AU2016376176B2 (en) 2019-10-03
US20180370764A1 (en) 2018-12-27
HK1251538A1 (zh) 2019-02-01
CN108367891A (zh) 2018-08-03
EP3393954A1 (fr) 2018-10-31
CN108367891B (zh) 2020-03-06
AU2016376176A1 (en) 2018-07-12
ES2783349T3 (es) 2020-09-17

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