US 9,311,793 B2Granted

Motion and area monitoring system and method

OwnerAndrew Lohbihlerinventor

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Abstract

Disclosed is a motion detection system for use in entryways or areas wherein a user may wish to monitor activity, comprising a wireless emitter and detector or system thereof. The emitters utilize a plurality of infrared or other media sensors to emit outgoing signals detecting an object blocking a pathway prescribed by an area between the emitter and a predetermined barrier. Reflections of the outgoing signals are received by the detector and an internal processor calculates an action based on the received input. An automatic calibration is conducted to match the physical reflectivity of the area to minimize false alarms, while the direction of a passing object is determined by a calculated reflection strength gradient and/or time-delay in signal reflectivity. The emitters may be programmed to emit certain alerts based on their input or send signals to a base station, which is communicated to via wireless transmission.

Claims22

Dependent claims

A method of detecting motion using a transceiver and a base station, comprising the steps of:

entering a ground state of beginning motion detection, wherein a first and second signal emitters are activated;
transmitting a first transmission signal from said first emitter and a second first transmission signal from said second emitter;
receiving a initial first set of return signals, comprising a first and second return signal with a receiver, wherein said signals are reflected from an object in front of at least one of said first or second emitter;
calculating a difference between a signal strength of said first set of return signals and second return signals against a signal strength of a first and second predetermined threshold signal;
determining whether a foreign object is present based on said difference calculation;
entering another an operational state based on said determination of the presence of said foreign object;
if said signal strength of said first set of return signals exceeds said signal strength of said first and second predetermined threshold signal,
calculating a difference between a signal strength of said first return signal of said first set of return signals and a signal strength of said second return signal of said first set of return signals;
transmitting a second transmission signal from said first emitter and a second transmission signal from said second emitter;
receiving a second set of return signals, comprising a first and second return signal with a receiver, wherein said signals are reflected from an object in front of at least one of said first or second emitter;
calculating a difference between a signal strength of a first return signal of said second set of return signals and a signal strength of a second return signal of said second set of return signals;
determining a movement of said foreign object based on comparing said signal strengths of said first set of return signals and said signal strengths of said second set of return signals.

9 more elements

A motion detection system comprising:

at least one transceiver comprising;
a. a microprocessor configured to calculate a difference between a signal strength of a first set of return signals and a signal strength of a first and second predetermined threshold signal;
if said signal strength of said first set of return signals exceeds said signal strength of said first and second predetermined threshold signal,
calculating a difference between a signal strength of said first return signal of said first set of return signals and a signal strength of said second return signal of said first set of return signals;
transmitting a second transmission signal from a first emitter and a second transmission signal from a second emitter;
receiving a second set of return signals, comprising a first and second return signal with a receiver, wherein said signals are reflected from an object in front of at least one of said first or second emitters;
calculating a difference between a signal strength of a first return signal of said second set of return signals and a signal strength of a second return signal of said second set of return signals;
determining a movement of said object based on comparing said signal strengths of said first set of return signals and said signal strengths of said second set of return signals;
b. a memory;
c. at least two signal emitters;
d. at least one signal receiver.
e. network connection means;
f. a power source;
g. an ambient environment sensor;
a base station in wireless communication with said transceiver and comprising;
a. a microprocessor;
b. a memory;
c. a network connection means;
d. a power source;
a network;
a remote alert receiving device.

18 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/659,537Filed 24 Oct 2012 · us provisional application
Priority: 24 Oct 2011
Published: US 2013/0099922 A125 Apr 2013
Granted: 12 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G08B 13/184
By interruption of a radiation beam or barrier: using radiation reflectors
G08B 13/2491
By interference with electromagnetic field distribution: intrusion detection systems, i.e. where the body of an intruder causes the interference…
G08B 29/26
Self-calibration, e.g. compensating for environmental drift or ageing of components: by updating and storing reference thresholds
G08B
Signalling systems