self-positioning remote monitoring system

An alarm system and predetermined interval technology, applied in satellite radio beacon positioning system, radio wave measurement system, vehicle position indication, etc., can solve the problems of physical size remote control unit small delay limit and other problems, and achieve the effect of prolonging life
CN1094227CInactive Publication Date: 2002-11-13CONVERSANT INTPROP MANAGEMENT INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CONVERSANT INTPROP MANAGEMENT INC
Publication Date
2002-11-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The alarm system (300) includes a base station (318) that monitors remote control unit(s) (302) attached to the person or thing being monitored. A unit (302) includes a receiver (304) for receiving navigation information from global positioning system satellites (336). The signal of the location (338) is transmitted to the station (318) and displayed (324) to the system operator. An environmental or physiological sensor(s) (308) causes an output(s) (310) to switch on a transmitter (314) determining sensor status (344), which is displayed at the base station. An overboard sensor (308) is provided to the man overboard detection system (300). Optionally, the receiver (320) provides an output (334) that is inversely proportional to the distance separating the remote unit (302) and the base station (318), the Said separation distance and a limit (330) to activate the alarm (332) when the person has fallen into the water and drifted away. Navigational information is displayed (324) to aid in locating the man overboard.
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Description

technical field

[0001] The present invention relates to personal alarm systems, and in particular to such systems that transmit higher power level signals during emergency situations. Background technique

[0002] Some personal alarm systems are well known in the art (see, for example, U.S. Patents US 4,777,478; US 5,025,247; US 5,115,223; and US5,086,391). These systems are used to keep children under surveillance. Use them to monitor the safety of employees involved in hazardous work at remote locations. Even use them to find lost or stolen vehicles and stray pets.

[0003] These systems use radio technology to link a remote control transmitter unit with a base receiving and monitoring station. The remote control unit is usually equipped with one or more incident sensors and is worn or attached to the person or thing to be monitored. When an accident is detected, the remote unit transmits a signal to the receiving base station, and the operator at the base station can...

Claims

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