Portable motion detector and alarm system and method
View Patent ↗A portable security alarm system including a movement detecting and signal transmitting member for mounting on or proximate to the object whose movement is to be detected, a signal receiving and alarm generating member for receiving a signal from the movement detecting and signal transmitting member and producing a security response, a remote control for actuating and deactuating the signal receiving and alarm generating member, an environmental monitoring member for sensing an environmental condition and providing a signal to the signal receiving and alarm generating member, a visual information gathering member for gathering visual information and providing a signal to the signal receiving and alarm generating member, an audio output member for receiving a signal from the signal receiving and alarm generating member and generating an audio output, and components for delivering a security notification to remote recipients. A security network that includes the alarm system is also disclosed. An inertial sensor for alarm system or for activating or deactivating a device is additionally disclosed.
1. A movement detecting device comprising an inertial sensor and adapted to sense multidirectional movement, and control circuitry for distinguishing between opposing directions of movement sensed by said sensor along a single axis of motion, said control circuitry comprising a first circuit adapted for sensing movement in a first direction and a second circuit adapted for sensing movement in a second direction, said first and second circuits respectively comprising positive and negative displacement threshold circuits adapted to produce an output when said sensor detects a specified level of movement, said positive and negative displacement threshold circuits having either the same or different displacement thresholds.
2. The device of claim 1 wherein said sensor comprises a gyroscope sensor.
3. The device of claim 1 wherein said sensor comprises a MEMS accelerometer sensor.
4. The device of claim 1 wherein said sensor comprises a piezo film accelerometer sensor.
5. The device of claim 1 wherein said sensor comprises a piezoelectric transducer having a piezoelectric element and a mass operatively attached to flex said piezoelectric element.
6. The device of claim 5 wherein said mass is one of a quantity of adhesive, a quantity of solder, or a solid object bonded to said piezoelectric element or to a substrate associated therewith.
7. The device of claim 1 wherein said sensor comprises a piezoelectric element disposed within a partial vacuum environment.
8. The device of claim 7 wherein said partial vacuum environment is provided by an airtight compartment.
9. The device of claim 1 further comprising a magnetic field sensor.
10. The device of claim 1 wherein said device control circuitry is activated or deactivated by said sensor detecting inertial movement.
11. The device of claim 1 wherein said device is adapted to generate an output in response to said sensor detecting inertial movement.
12. The device of claim 1 wherein said device is adapted to transmit a wireless radio frequency signal in response to said sensor detecting inertial movement.
13. The device of claim 1 wherein said device is disposed in a portable security system adapted to forward a security alert to a telephone number, an email address or other endpoint in response to said sensor detecting inertial movement.