Abstract:
This disclosure provides systems and methods for detecting a change in environmental conditions utilizing sampling circuitry configured to sample an environmental sensor while a processor remains in a low-power state or a sleep state. According to some embodiments, a pre-filter performs a simplified analysis of the sensor samples to determine if the processor should wake and perform additional analysis on stored sensor samples. Specific examples are provided for detecting motion using passive infrared detectors. Accordingly, systems and methods for reducing the power consumption of a motion detection system are provided herein.
Abstract:
An asset protection system uses a plurality of radiate and detect units to maintain a radio frequency field, or signal, in a monitored area. Each unit has a unique unit identifier code which it modulates onto its transmission of the field, and a zone where its transmission of the field will dominate. Assets have tags attached to them. The tags have a mechanism to attach them to the objects and have electronic components on board including a microprocessor, motion detector, radio frequency circuitry, audible alarm generator. The tags receive the field and when they are in a zone dominated by a unit, demodulate that units identifier code. The tags transmit a signal at a different frequency with the unit identifier code and its tag identifier code in the signal. The unit receives the tag signal with its code on it and adds the tag to the inventory for its area.
Abstract:
Method and system for monitoring coastlines includes arranging sensors proximate the coastline, obtaining data about the coastline via the sensors, analyzing the data to determine the presence of a reportable condition relating to passage of an object proximate the coastline, and transmitting the data or a signal indicative of the analysis, optionally with an identification or location of the sensors, to a monitoring facility. The sensors may be spaced apart from one another along the coastline and programmed to wake-up upon detection of a predetermined condition in order to obtain data. If the location of each sensor is not programmed into the sensor or otherwise known by the monitoring facility, each sensor may be arranged to determine its location so that each sensor provides its location when transmitting data or the signal to the monitoring facility.
Abstract:
A surveillance trailer includes a wheeled chassis and an electronics enclosure mounted atop the wheeled chassis. A first solar power panel is provided for charging a portable power supply and is positioned and oriented so that the first solar power panel extends generally transversely over the ground. A second solar power panel is provided for charging the portable power supply and is positioned and oriented so that the second solar power panel is generally perpendicular to the ground. The surveillance trailer can include an altitude adjustment for tilting the first solar panel to adjust the vertical orientation of the first solar panel to correspond with the local latitude. Also optionally, the surveillance trailer can include a pivoting azimuth mount so that the first solar panel can be pointed toward the sun to better capture the solar energy.
Abstract:
A notification appliance circuit (NAC) includes notification devices having a high capacity rechargeable energy storage device such as a supercapacitor and a strobe circuit. The supercapacitor can provide energy to produce flashes over an extended time period without fully discharging. The notification devices can also make use of the fallback power strategy in which the strobe circuit operates with reduced intensity while the supercapacitor is being recharged.
Abstract:
A redundant security system relies on a Radio Frequency Identification (RFID) tag to convey security sensor data. If the RFID tag is unable to convey security sensor data, a backup photoelectric cell powered transmitter is activated to transmit security sensor data to a monitoring station. Alternately, a security safe is outfitted with a RFID tag based security sensor. The RFID tag allows remote monitoring of at least one of an opened/closed condition and a locked/unlocked condition of a door of the security safe.
Abstract:
The self-powered detection device comprises a Non-Volatile Memory (NVM) unit (52) formed at least by a NVM cell and a sensor which is activated by a physical or chemical action or phenomenon, this sensor forming an energy harvester that transforms energy from said physical or chemical action or phenomenon into an electrical stimulus pulse, said NVM unit being arranged for storing in said NVM cell, by using the electrical power of said electrical stimulus pulse, a bit of information relative to the detection by said sensor, during a detection mode of the self-powered detection device, of at least one physical or chemical action or phenomenon applied to it with at least a given strength or intensity and resulting in a voltage stimulus signal provided between a set control terminal (SET) and a base terminal (SET *) of said NVM unit with at least a given set voltage. The self-powered detection device comprises a read circuit (56) or is arranged to be coupled to such a read circuit and further comprises a clamp circuit (54) located between the sensor and the NVM unit, this clamp circuit being arranged for passing said voltage stimulus signal on a set line connecting the sensor and the set control terminal of the NVM unit, this voltage stimulus pulse having a polarity corresponding to a set polarity of said NVM cell, and for blocking other voltage signals having approximately an amplitude corresponding to said set voltage or higher and an inverse polarity relative to the set polarity of said NVM cell, in order to avoid a possible erase of this NVM cell by such other voltage signals.
Abstract:
A kit is provided that provides for remotely locating a smoke detector battery from a surface mounted smoke detector of the type that comprises an internal two wire battery connector. The kit comprises a first connector arranged to mate with the internal two-wire battery connector. The kit also includes a length of surface mountable tape wire comprising at least two, flat, thin, flexible, elongate conductors carried by an insulating tape. One surface of the tape carries an adhesive layer or material bonded to the insulating tape. The tape wire is mountable to a flat surface or to adjacent flat surfaces such that said flat electrical conductors are mountable onto an interior wall surface, said wall surface being one of the same wall surface upon which said smoke detector is surface mounted or a wall surface adjacent to the surface upon which said smoke detector is surface mounted. A second connector is configured to connect the first pair of electrical wire conductors to the two elongate conductors. A container is provided for containing a smoke detector battery. The container comprises a pair of contacts for electrically connecting to a smoked detector battery. A third connector is provided to connect the container contacts to the elongate conductors. The container is mountable at a location on a wall surface to provide convenient access to the battery.
Abstract:
A signaling light source facilitates locating personnel under adverse conditions such as in a smoky environment and resists damage from exposure to a harsh user environment A lighting unit includes at least one, and preferably two, of the signaling light sources also includes at least one personnel identifying red-green-blue (“RGB”) light emitting diode (“LED”) Disclosed methods for operating the signaling light source include energizing operation of a LED light source by supplying a sequence of electrical current pulses which repeat at a rate which causes emitted light to pulse visually, supplying electrical current to a pair of LEDs alternatively connected either in series or in parallel depending upon battery operating condition, and monitoring smoke density in environment around the signaling light source and modulating the intensity of emitted light responsive to smoke density.
Abstract:
A monitoring system for a NAC (Notification Appliance Circuit) is provided. The monitoring system includes a system controller, and a NAC comprised of one or more notification appliances that may be in a series. The NAC and its appliances may be operatively coupled to the system controller. The system controller is operable to determine whether a notification appliance has sufficient voltage at a low voltage operation. The system controller may control the voltage to the NAC in order to provide power to simulate operation of the NAC using battery power. A voltage may be measured during the simulation (such as at one end of the NAC). The measured voltage may be compared with a predetermined minimum operating voltage for the notification appliance. Based on the comparison, it may be determined whether the one or more appliances on the NAC may operate properly when the NAC is operated using battery power.