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1. (WO2017167720) LIFT SYSTEM HAVING A CENTRAL CONTROL UNIT AND A PLURALITY OF FIELD DEVICES WHICH COMMUNICATE VIA A SUMMATION FRAME METHOD

Pub. No.:    WO/2017/167720    International Application No.:    PCT/EP2017/057262
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Wed Mar 29 01:59:59 CEST 2017
IPC: B66B 1/34
H04L 12/423
Applicants: INVENTIO AG
Inventors: SONNENMOSER, Astrid
MICHEL, David
ROUSSEL, Frank Olivier
LUSTENBERGER, Ivo
HEINZ, Kurt
HARTMANN, Thomas
HESS, Martin
Title: LIFT SYSTEM HAVING A CENTRAL CONTROL UNIT AND A PLURALITY OF FIELD DEVICES WHICH COMMUNICATE VIA A SUMMATION FRAME METHOD
Abstract:
A description is given of a lift system (1) having a central control unit (13) for generating control signals and/or for processing sensor signals and for controlling functions of the lift system (1), a plurality of field devices (17a, 17b, 17c, 17d) which are arranged in a distributed manner inside a structure (15) which accommodates the lift system (1), in particular preferably along a lift shaft (3), and a field bus system (35) having a topology of electrical lines (61-68) for interchanging sensor signals and/or control signals between the central control unit (13) and the field devices (17a, 17b, 17c, 17d). Each field device (17a, 17b, 17c, 17d) may be, for example, a door switch or the like and is set up to output sensor signals generated by a sensor and/or to receive control signals to be implemented by an actuator. The field devices (17a, 17b, 17c, 17d), the central control unit (13) and the field bus system (35) are designed to interchange a data packet comprising the sensor signals and/or control signals in a serial manner between the central control unit (13) and all field devices (17a, 17b, 17c, 17d) in a summation frame method using a closed ring topology. Each of the field devices (17a, 17b, 17c, 17d) has a driver (33, 33') in order to insert the sensor signals into the data packet or to remove the control signals from the data packet. Data and signal transmission can thereby be carried out quickly and safely in a safety circuit of the lift system, for example.