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Patent Searching and Data


Title:
WINDOW OPENING AND CLOSING DETECTION DEVICE
Document Type and Number:
Japanese Patent JP2010250575
Kind Code:
A
Abstract:

To enable setting of an appropriate magnetic force level according to a distance to a magnet by an easy operation at installation site.

A far and near selection part selects capturing output from a high-gain amplifier circuit 54-1, when a magnetic force level obtained from an output signal of the high-gain amplifier circuits 54-1 is not more than a predetermined far and near determination threshold, and selects capturing the output from a low gain amplifier circuit 54-2, when the magnetic force level is over the far and near determination threshold. A registration processing part performs initial registration to a nonvolatile memory, of the magnetic force level obtained from the output signal by the high-gain amplifier circuits 54-1 or by the low-gain amplifier circuit 54-2 selected in the far and near selection part and computes from the magnetic force level, a lock determination threshold which is lower by a different ratio corresponding to the far and near selection and registers it in the nonvolatile memory.


Inventors:
SHIMA YASUSHI
NOGUCHI KOHEI
Application Number:
JP2009000099637
Publication Date:
November 04, 2010
Filing Date:
April 16, 2009
Export Citation:
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Assignee:
HOCHIKI CO
CIRCUIT DESIGN KK
International Classes:
G08B13/08
Domestic Patent References:
JP2008288030A2008-11-27
JP2007272439A2007-10-18
Attorney, Agent or Firm:
竹内 進