ELEVATOR SYSTEM HAVING A CIRCUIT WITH A SWITCH MONITORED BY MEANS OF AN AC VOLTAGE SIGNAL

    公开(公告)号:US20190263628A1

    公开(公告)日:2019-08-29

    申请号:US16344072

    申请日:2017-10-25

    Applicant: Inventio AG

    Abstract: An elevator system controller controls a drive and optionally further elevator components. The controller includes a circuit having a switch to be monitored, the switch having an input and an output, a signal transmitter unit applying an AC voltage input signal to the input of the switch, and a monitoring unit to record an output signal at an output of the switch. On the basis of a comparison of the output signal with the input signal, the circuit generates a monitoring signal that indicates a switching state of the switch. The switch may be, for example, a door switch connected in series with other safety switches to form a safety chain. Applying the AC voltage signal instead of a conventional DC voltage signal makes it possible to avoid electrical corrosion in the switch and also makes it possible to increase a reliability of a detected switching state of the switch.

    Monitoring device for a passenger transport system, testing method and passenger transport system

    公开(公告)号:US11365088B2

    公开(公告)日:2022-06-21

    申请号:US16062132

    申请日:2016-12-14

    Applicant: Inventio AG

    Abstract: A monitoring device for monitoring a passenger transport system includes at least one sensor, a control unit, a bus, and at least one bus node connected to the bus. The bus node has a microprocessor and an inspection unit for data exchange with the control unit. A first program module in the microprocessor detects a state change of the sensor that is connected to an input of the microprocessor via a transmission line and spontaneously transmits a corresponding state message to the control unit. A second program module in the inspection unit, after receiving an instruction from the control unit, transmits an activation signal to a coupling point in the bus node that simulates a state change of the sensor, the activation signal being superimposed on a sensor signal and/or being coupled into a power supply line connected to the sensor.

    PASSENGER TRANSPORT SYSTEM WITH CENTRAL CONTROL UNIT AND MULTIPLE FIELD DEVICES WHICH COMMUNICATE WITH DATA TELEGRAMS PRIORITIZED BY WAITING PERIODS

    公开(公告)号:US20190140860A1

    公开(公告)日:2019-05-09

    申请号:US16304322

    申请日:2017-06-07

    Applicant: Inventio AG

    Abstract: A passenger transport system includes a central control unit for controlling system functions, field devices spatially distributed within the system, and a bus system transmitting data between the unit and the devices. The unit and/or the devices detect a current data transmission and the conclusion of the data transmission, and output different types of data telegrams that differ according to urgency. The unit and/or the devices output data telegrams only when no current data transmission is occurring and after a waiting period has elapsed since the conclusion of a previous data transmission. Each type of data telegram is assigned an individual waiting period on the basis of the respective urgency. Thus, a simple transmission prioritization is implemented during the data transmission, wherein each device can transmit data telegrams with different urgency and data telegrams of higher urgency are effectively transmitted with higher priority than data telegrams of lesser urgency.

    PASSENGER TRANSPORT SYSTEM HAVING CENTRAL CONTROL UNIT AND MULTIPLE FIELD DEVICES HAVING AN OPTIMIZED FAILURE DETECTION METHOD

    公开(公告)号:US20190119068A1

    公开(公告)日:2019-04-25

    申请号:US16094498

    申请日:2017-05-03

    Applicant: Inventio AG

    Abstract: A passenger transport system includes a bus system transferring data between a central control unit and a plurality of field devices. In a failure detection method, the field devices are configured in an unbranched chain configuration and the control unit transmits a test telegram to a first field device to start a monitoring cycle during which each field device receiving the test telegram forwards the test telegram to a next field device in the chain. During the monitoring cycle, the control unit monitors a communication between the field devices occurring via the bus system, in order to detect when a field device does not forward the test telegram. A data volume transmitted via the bus system during the failure detection method is significantly reduced in comparison to conventional failure tests such that failures can be recognized more quickly and/or simpler hardware and/or software can be used.

    Method and apparatus for controlling an elevator system

    公开(公告)号:US10926974B2

    公开(公告)日:2021-02-23

    申请号:US15764404

    申请日:2016-09-26

    Applicant: Inventio AG

    Abstract: An elevator system drive unit moves an elevator car in an elevator shaft to at least two shaft access doors under control of a control unit. The car does not move or moves only to a limited extent if an individual is in the shaft. A monitoring unit and sensor (switching contact) detect changes in state in at least one of the doors using a sequence of pulses monitoring signal. The monitoring unit has a battery and can be switched to an autonomous mode when the elevator system is entirely or partially disabled. The monitoring unit, in the autonomous mode, records state data from the sensor and is connected to a safeguard unit that reads and evaluates the recorded state data, and prevents the elevator system from being put into the normal mode of operation if a change in the state of one of the monitored doors has been detected.

    MONITORING UNIT FOR AN ELEVATOR SYSTEM, AND METHOD

    公开(公告)号:US20180354747A1

    公开(公告)日:2018-12-13

    申请号:US15774024

    申请日:2016-11-10

    Applicant: Inventio AG

    Abstract: A monitoring unit, for monitoring an elevator system, includes a circuit assembly having a power supply unit for dispensing a grid-dependent first operating voltage and at least one processor-controlled monitoring module to actively and/or passively ascertain state data of the elevator system. An energy storage unit, that dispenses a grid-independent second operating voltage, and a first switching device supply the first operating voltage to the monitoring module during a normal operation and supply the second operating voltage to the monitoring module in the event of a power outage. A non-volatile data storage unit that stores a variable operating parameter and a second switching device deactivate parts of the circuit assembly. The monitoring module actuates the second switching device based on the stored operating parameter that has a first value before the monitoring unit is started and has a second value after the monitoring unit is started.

    METHOD AND APPARATUS FOR CONTROLLING AN ELEVATOR SYSTEM

    公开(公告)号:US20180215579A1

    公开(公告)日:2018-08-02

    申请号:US15764404

    申请日:2016-09-29

    Applicant: Inventio AG

    CPC classification number: B66B5/0031 B66B5/005 B66B13/22

    Abstract: An elevator system drive unit moves an elevator car in an elevator shaft to at least two shaft access doors under control of a control unit. The car does not move or moves only to a limited extent if an individual is in the shaft. A monitoring unit and sensor (switching contact) detect changes in state in at least one of the doors using a sequence of pulses monitoring signal. The monitoring unit has a battery and can be switched to an autonomous mode when the elevator system is entirely or partially disabled. The monitoring unit, in the autonomous mode, records state data from the sensor and is connected to a safeguard unit that reads and evaluates the recorded state data, and prevents the elevator system from being put into the normal mode of operation if a change in the state of one of the monitored doors has been detected.

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