Abstract:
A passive infra-red detector including at least three sub-detectors, each sub-detector being operative to receive infra-red radiation from a corresponding one of at least three sub fields-of-view, each sub field-of-view being exclusively defined by an optical element which does not define any other sub field of view, the sub fields-of-view being angled with respect to each other, adjacent ones of the sub fields-of-view being separated by a gap of no more than 30 degrees and at least one of the sub fields-of-view having at least one of the following characteristics: extending over no more then 45 degrees in azimuth; and including not more than three azimuthally distributed detection zones, and signal processing circuitry, operative to receive output signals from the sub detectors and to provide a motion detection output.
Abstract:
A detector, system including a detector and method for sensing motion within a detection region. The detector has a detection element and a focusing element aiming received energy corresponding to a presence within the detection region toward the detection element. The focusing element has a plurality of sections in which each of the plurality of sections establishes a corresponding detection zone within the detection region. The plurality of sections are arranged to allow a motion vector to be determined for an object passing through the detection region. The system includes a detector that generates pulses each time presence in a detector zone is detected as well as a central alarm panel. The central alarm panel receives the pulses and has processor that evaluates the timing between electrical pulses to determine the motion vector.
Abstract:
A passive infrared sensor (PIR) for detecting infrared radiation which includes a lens positioned in a sensor housing, and a pyroelectric element electrically connected to a circuit board within a filter housing positioned in the sensor housing. A microprocessor is electrically connected to a main circuit board and controls a liquid crystal display (LCD) attached to the sensor housing. The lens overlaps the LCD. The LCD has LCD regions corresponding to lens regions of the lens. Using the microprocessor, the LCD regions selectively prevent radiation energy from passing to the pyroelectric element, and the LCD regions selectively allow radiation energy to pass to the pyroelectric element. A signaling device communicates an alarm signal indicating when radiation energy within a specified wavelength band reaches the pyroelectric element.
Abstract:
The present invention provides an infrared ray detector capable of facilitating design of a compound lens and capable of reliably detecting a heat source in a stabilized state, which is provided with a light receiving portion for detecting infrared ray energies, and a compound lens having a plurality of lens portions to condense an infrared ray in a predetermined detection area to the light receiving portion, wherein individual detection areas which condense infrared rays to the light receiving portion through the respective lens portions of the compound lens exist in the entire range of a predetermined detection area, and at least a part of the individual detection areas overlap each other.
Abstract:
A secure sealed container and mounting pole house any of a variety of security equipment. Sensing equipment, a high decibel siren, and strobes simulating police lights are removably attachable to a universal mount and control circuit. A control panel connected to the circuit enables and disables the alarm, and monitors system activity.
Abstract:
A motion detector device includes a lamp assembly, a junction box assembly with a cylindrically shaped holding arm, a rotation assembly incorporating a sensor seat, a pyro-sensor and circuitry, and a lens assembly. The lens assembly can assume a semi-spherical or cylindrical shape. The lens assembly is integrally formed by a plurality of multifaceted lenses with pre-determined focuses constituting pre-determined focusing views. Each focusing view is defined for a range/distance and angle of detection. The lens assembly can be rotated to select a specific focusing view. The sensor seat is disposed at the focus of the selected focusing view to receive infrared radiation rays. The entire or half or portion of the lens assembly carries lenses making up the pre-determined focusing views.
Abstract:
An infrared detecting apparatus includes at least one infrared-sensitive element. Focusing means focuses infrared energy from a first zone onto the at least one infrared-sensitive element. An opaque element including a throughhole is positioned such that infrared energy may pass through the throughhole from a second zone to the at least one infrared-sensitive element. The second zone is closer than the first zone to the at least one infrared-sensitive element.
Abstract:
A detector mountable on either a planar wall or an interior corner and having an adjustable field of view. The detector includes first and second sensors positioned to provide a horizontal field of view defining an angle of approximately 180 degrees. At least one blinder has a first position wherein the first and second sensors have a horizontal field of view defining an angle of approximately 180 degrees and a second position wherein the first and second sensors have a horizontal field of view defining an angle of approximately 90 degrees. A biasing member biases the blinder toward a first one of the first and second positions. A positioning member has a first member position wherein the positioning member biases the blinder toward the other of the first and second positions and a second member position wherein the biasing member biases the blinder into the first one of the first and second positions.
Abstract:
A passive infra-red detector including at least three sub-detectors, each sub-detector being operative to receive infra-red radiation from a corresponding one of at least three sub fields-of-view, each sub field-of-view being exclusively defined by an optical element which does not define any other sub field of view, the sub fields-of-view being angled with respect to each other, adjacent ones of the sub fields-of-view being separated by a gap of no more than 30 degrees and at least one of the sub fields-of-view having at least one of the following characteristics: extending over no more then 45 degrees in azimuth; and including not more than three azimuthally distributed detection zones, and signal processing circuitry, operative to receive output signals from the sub detectors and to provide a motion detection output.
Abstract:
An infrared detecting apparatus includes at least one infrared-sensitive element. Focusing means focuses infrared energy from a first zone onto the at least one infrared-sensitive element. An opaque element including a throughhole is positioned such that infrared energy may pass through the throughhole from a second zone to the at least one infrared-sensitive element. The second zone is closer than the first zone to the at least one infrared-sensitive element.