Other

Abl IP Holding LLC

Cerberus Ag

Arrowhead Enterprises, Inc.

Philip H Mudge

Brian P Platner

William J Fassbender

William G Kahl, Jr

Keith Kendell Platner

Richard Settanni

A portable, handheld artificial light detector distinguishes artificial light from sunlight and identifies low-frequency artificial light from high-frequency artificial light. Artificial light includes light from a lamp powered by an AC source. Low frequency light includes, for example, light produced by a magnetic luminaire ballast, while high frequency light includes light produced by an electronic luminaire ballast.

Portable handheld artificial light detector

Occupancy sensors are provided that do not require an external power source in order to operate. The sensors operate with a low voltage non-rechargeable battery and are fully functional for at least about 15-20 years. The sensors include a relay output capable of switching high or low voltage and high or low current with virtually no generated heat. The sensors require no warm-up period, no minimum load, and no external ground connection. The sensors are always active and are easily installed, having two electrically interchangeable outputs for coupling to, for example, a load and a load power source.

Self-powered long-life occupancy sensors and sensor circuits

An occupancy sensor is provided that can operate within an extended range of AC and DC input voltages, enabling the sensor to be used in different electrical environments. The sensor draws substantially only an amount of current required by the sensor at the moment, which reduces power waste. The sensor includes a relay that de-energizes when occupancy is sensed and energizes when occupancy is not sensed. This reduces peak sensor current, permitting the sensor to maintain a more constant average current. A shutdown mode is provided to prevent sensor damage or destruction should excessive output current be drawn from the sensor. The sensor also includes a second output at which occupancy signals are provided when an occupancy signal is present at the first output.

Highly versatile occupancy sensor

Occupancy sensors are presented that include a flat lens for focusing detecting beams into narrower, longer range beams than those of conventional curved lenses. A sensing circuit generates a detecting beam that is substantially perpendicular to the flat lens. The flat lens has a plurality of lens segments that provide long, intermediate, and short range sensing beams. To facilitate positioning of an occupancy sensor, the sensor includes a plurality of indicators that indicate the sensor's long and short range sensing limits. An override timer circuit is provided that upon activation sets the occupancy sensor in occupancy mode for a predetermined time period. A warm-up timer circuit is also provided that upon power-up automatically sets the occupancy sensor in occupancy mode for a predetermined warm-up period. These occupancy sensors are well-suited for environments with long aisles, high ceilings, and high intensity discharge lighting.

Occupancy sensors for long-range sensing within a narrow field of view

Interface circuitry for facilitating the installation of a control device is presented. One embodiment includes an interface circuit with first and second terminals that can be coupled interchangeably to a load and the utility hot of an AC power source, thus eliminating the time-consuming requirement that a particular wire be coupled to a particular terminal. The interface circuit also limits the amount of current supplied to the control device during periods of low current demand, thus reducing current and power consumption. An additional feature further facilitates installation of a control device when that device is being installed in a metallic electrical enclosure that is itself coupled to utility return. The device's return terminal is automatically coupled to the power source's utility return upon mounting of the control device in the enclosure.

Interface circuitry for facilitating installation of a control device

The present invention relates to an occupancy detector device that is capable of regulating the on/off status of electrical appliances, such as lights, depending on the presence of people in a given monitored area. The occupancy detector of the present invention relies on the combined functioning of a passive infrared sensor and a sound sensor. Signals from the passive infrared sensor or the sound sensor operate to maintain the electrical appliances in the on state. If no signals are received from these sensors after a predetermined time interval, the off state of the electrical appliances is initiated. Following the initiation of the off state there may be a predetermined grace period during which a sound signal can reinitiate the on state of the electrical appliance. If no sound signal is received during that grace period, only a signal from the passive infrared sensor can subsequently reinitiate the on state. The sound detector of the present invention may be adapted with an 'automatic gain control' feature by which background noise is filtered out and does not maintain or initiate the on state of the electrical appliances.

Occupancy detector

A control unit for switching AC powered high efficiency lighting in response to a signal from an occupancy sensor. The lighting is switched by a hybrid mechanical relay/semiconductor switch. The semiconductor switch is connected in parallel with the relay switch contacts to protect them and is controlled by a noise-insensitive zero voltage crossing detector circuit which switches the semiconductor switch only at the zero crossings of the AC power. The semiconductor switch is preferably turned on by a pulse forming circuit only for a brief period of time spanning the time when the relay is switching.

Control unit for occupancy sensor switching of high efficiency lighting

A compact passive infrared detector is provided with a plane mirror which reflects infrared radiation focused by a lens onto a detector arranged between the lens and the reflector.

Compact passive infrared intrusion sensor

A passive infrared intrusion detector is provided of the type having an infrared sensor for detecting a change in temperature in the field of view of the sensor caused by an intruder moving therein, optical means for focusing radiation from the field of view on the sensor, and an alarm which is activated when the sensor detects a change in temperature. The improvements reside in mounting the passive intrusion detector in a generally C-shaped housing exposed to a field of view which may be shifted through an angle of at least 180.degree.. A bendable, translucent window is provided having slots in opposite ends thereof which engage projections on opposite sides of the housing. The window is very simply released by applying thumb pressure to the window in the proximity of the projections. The intrusion detector is also provided with a horn-like enclosure which surrounds the sensor. A flexible Fresnel lens may be rapidly mounted on the enclosure, permitting ready adaptation of the detector to local conditions. Incorporated in the detector are a light source and movable mirror. The light source is mounted at a conjugate point with respect to the sensor so that the light source may be projected on the same field of view as that seen by the detector. This permits the detector to be easily and rapidly aimed.

Passive infrared intrusion detector

The invention comprises a passive infrared intrusion detector including a lamp for locating the zones being protected by the detector. The detector includes a heat sensor, a lens system for receiving and focusing the body heat of an intruder on the heat sensor, and electrical circuitry responsive to the heat sensor for actuating an alarm or detection signal when the body heat of an intruder is detected. The zone locator lamp is positioned near the heat sensor and its light passes through a lens in the general direction of a zone to be protected. The light parallels a portion of radiation which is focused on the heat sensor by another lens. If the light can be observed from a given position in front of the detector, that position is in a zone being observed by the detector and body heat radiated from that zone will be focused on the heat sensor. Thus, zones protected by the intrusion detector can be established by adjusting the position of the detector until light from the zone locator lamp is observed. Once these zones are established, the lamp may be disconnected and the intrusion detector placed in the 'ready' or 'stand by' mode.

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Brookfield, CT, United States of America

Philip H Mudge