Title:
こじ開け判定システム
Document Type and Number:
Japanese Patent JP7179610
Kind Code:
B2
Abstract:
To provide a prying determination system that quickly and securely detects prying of a door.SOLUTION: At a main entrance 15 of a building 10 are provided an entrance door 16 and a door frame 17. On a door end side face of the entrance door 16 are provided three opening/closing detection sensors for detecting opening/closing of the entrance door 16. The door frame 17 has three magnets that correspond to the three opening/closing detection sensors, respectively, and are provided on a side face of the door frame 17. The respective opening/closing detection sensors are magnetic sensors for detecting an opened/closed state of the entrance door 16 depending on magnetic flux density caused by the respective magnets. When the entrance door 16 is opened from a closed state not by prying but normally, the respective opening/closing detection sensors have different timing of detecting an opened state of the entrance door 16. When a combination of detection results of the opened state that are detected by two opening/closing detection sensors of the three opening/closing detection sensors is different from a predetermined combination, it is determined that the entrance door 16 is being pried.SELECTED DRAWING: Figure 1
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Inventors:
Kuki Atsushi
Application Number:
JP2018245741A
Publication Date:
November 29, 2022
Filing Date:
December 27, 2018
Export Citation:
Assignee:
Toyota Home Corporation
Tokai Rika Electric Co., Ltd.
Tokai Rika Electric Co., Ltd.
International Classes:
E05B45/06; E05B63/14; G01B7/00
Domestic Patent References:
| JP2005128856A | ||||
| JP2014118757A | ||||
| JP2005100045A | ||||
| JP2008038353A | ||||
| JP2006011995A |
Attorney, Agent or Firm:
Yamada Tsuyoshi
Masahiro Kato
Masahiro Kato