Method and device for determining an unauthorized intrusion at a door

US9811986B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Maxime Loidreau · Reutlingen, DE
• Julian Bartholomeyczik · Reutlingen, DE
• Frank Schindler · Reutlingen, DE
• Qiulu Dai · Reutlingen, DE

Key dates

• Filing date: Nov 27, 2014
• Grant date: Nov 7, 2017
• Expiry date: Nov 27, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G08B13/08
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method for determining the unauthorized intrusion through a door, including: a) determining a movement path of the door as a function of time in all three spatial axes using a movement sensor in an active mode; b) determining parameters in all three spatial axes based on the movement path of the door, an unauthorized intrusion at the door exists when the actual value of the particular parameter is within an assigned parameter range for the unauthorized intrusion; c) determining an opening angle of the door using an angle measuring sensor when an unauthorized intrusion has been determined; and d) comparing the opening angle of the door with a threshold value for a closed door; e) determining that the door has been opened when the opening angle exceeds the threshold value, and outputting an alarm signal if the door has been opened. A device is also described.