Title:
PRYING DETERMINATION SYSTEM
Document Type and Number:
Japanese Patent JP2020105819
Kind Code:
A
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:
July 09, 2020
Filing Date:
December 27, 2018
Export Citation:
Assignee:
TOYOTA HOME KK
TOKAI RIKA CO LTD
TOKAI RIKA CO LTD
International Classes:
E05B45/06; E05B63/14; G01B7/00
Domestic Patent References:
| JP2005128856A | 2005-05-19 | |||
| JP2014118757A | 2014-06-30 | |||
| JP2005100045A | 2005-04-14 | |||
| JP2008038353A | 2008-02-21 | |||
| JP2006011995A | 2006-01-12 |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Masahiro Kato
Masahiro Kato