Title:
【発明の名称】二方向性ワイヤレス・リンクを用いた状態確認
Document Type and Number:
Japanese Patent JP2002544746
Kind Code:
A
Abstract:
Building monitoring and control systems including bi-directional radio frequency links between master and remote units wherein the remote units operate in a low power, non-receiving state a majority of the time is disclosed. The bi-directional capability allows coordinated scheduling which aids in allowing the remote units to transmit data only at periodic time intervals to extend battery life. The bi-directional capabilities also allow for re-read requests for alarm validation and for putting remote units in armed and disarmed states for power conservation.
Inventors:
Helgeson, Michael A.
Application Number:
JP2000618942A
Publication Date:
December 24, 2002
Filing Date:
May 15, 2000
Export Citation:
Assignee:
Honeywell Incorporated
International Classes:
G08B26/00; H04Q9/00; G08B25/04; (IPC1-7): H04Q9/00; G08B25/04
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)