US 12,291,430 B2
Electronic elevator guard device and method for monitoring a set of integrity states of a plurality of elevator features
Lennart Svensson-Hilford, Teltow (DE)
Assigned to INVENTIO AG, Hergiswil (CH)
Appl. No. 16/481,867
Filed by Inventio AG, Hergiswil (CH)
PCT Filed Jan. 26, 2018, PCT No. PCT/EP2018/051904
§ 371(c)(1), (2) Date Jul. 30, 2019,
PCT Pub. No. WO2018/138234, PCT Pub. Date Aug. 2, 2018.
Claims priority of application No. 17153771 (EP), filed on Jan. 30, 2017.
Prior Publication US 2019/0375610 A1, Dec. 12, 2019
Int. Cl. B66B 5/00 (2006.01); B66B 1/34 (2006.01); B66B 1/46 (2006.01)
CPC B66B 5/0031 (2013.01) [B66B 1/3461 (2013.01); B66B 5/0025 (2013.01); B66B 1/463 (2013.01); B66B 2201/402 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electronic elevator guard device for monitoring a set of integrity states of a plurality of elevator features of an elevator, the electronic elevator guard device comprising:
a sensor installed in the elevator and adapted to monitor a first integrity state of the set of integrity states, the sensor generating a first monitoring signal based on a sensed current status of the first integrity state;
a questioning device including or communicating with a human-machine interface and adapted to ask predetermined questions to a consulted person and to receive answers of the person via the human-machine interface, the questions relating to a current status of a second integrity state of the set of integrity states, the second integrity state not monitored by any sensor, the questioning device generating a second monitoring signal based on at least one of the answers, wherein the questioning device asks the questions at time intervals being longer than a predetermined minimum time interval; and
an evaluation device connected to the sensor and to the questioning device, the evaluation device generating an overall monitoring signal based on the first monitoring signal and the second monitoring signal, the overall monitoring signal indicating a current safety status of the elevator.