A battery-powered occupancy sensor for detecting an occupancy condition in a space comprises first and second batteries, an occupancy detector circuit, a controller, and a wireless transmitter for transmitting a first wireless signal in response to the occupancy detector circuit detecting the occupancy condition in the space. The controller and the wireless transmitter are powered by the first battery, while only the occupancy detector circuit is powered by the second battery, such that the occupancy detector circuit is isolated from noise generated by the controller and the wireless transmitter. The occupancy detector circuit draws a current having a magnitude of approximately 5 microamps or less from the second battery. The occupancy sensor transmits a second wireless signal is response to determining that the voltage of one of the batteries has dropped too low.
Nikhil Vathal Bhate - East Norriton PA, US Elliot G. Jacoby - Glenside PA, US Gregory Altonen - Easton PA, US Jason C. Killo - Emmaus PA, US Greg Edward Sloan - Allentown PA, US
A wireless lighting control system comprises a daylight sensor for measuring a light intensity in a space and a dimmer switch for controlling the amount of power delivered to a lighting load in response to the daylight sensor. For example, the daylight sensor may be able to transmit radio-frequency (RF) signals to the dimmer switch. The system provides methods of calibrating the daylight sensor that allow for automatically measuring and/or calculating one or more operational characteristics of the daylight sensor. One method of calibrating the daylight sensor comprises a “single-button-press” calibration procedure during which a user is only required to actuate a calibration button of the daylight sensor once. In addition, the daylight sensor is operable to automatically measure the total light intensity in the space at night to determine the light intensity of only the electrical light generated by the lighting load.
Nikhil Vithal Bhate - East Norriton PA, US Elliot G. Jacoby - Glenside PA, US Gregory Altonen - Easton PA, US Jason C. Killo - Emmaus PA, US Greg Edward Sloan - Allentown PA, US
A wireless battery-powered daylight sensor for measuring a total light intensity in a space is operable to transmit wireless signals using a variable transmission rate that is dependent upon the total light intensity in the space. The sensor comprises a photosensitive circuit, a wireless transmitter for transmitting the wireless signals, a controller coupled to the photosensitive circuit and the wireless transmitter, and a battery for powering the photosensitive circuit, the wireless transmitter, and the controller. The photosensitive circuit is operable to generate a light intensity control signal in response to the total light intensity in the space. The controller transmits the wireless signals in response to the light intensity control signal using the variable transmission rate that is dependent upon the total light intensity in the space. The variable transmission rate may be dependent upon an amount of change of the total light intensity in the space. In addition, the variable transmission rate may be further dependent upon a rate of change of the total light intensity in the space.
Wireless Sensor Having A Variable Transmission Rate
A sensing device transmits wireless signals when an error between at least one sampled parameter value and at least one predicted parameter value is too great, such that the sensing device transmits wireless signals to a load control device using a variable transmission rate that is dependent upon the amount of change in a value of the parameter. The sensing device uses the one or more estimators to determine the predicted parameter value, and may transmit the estimators to the load control device if the error is too great. The load control device uses the estimators to determine at least one estimated parameter value and controls the electrical load in response to the estimated parameter value. The sensing device may comprise, for example, a daylight sensor for measuring a total light intensity in the space around the sensor or a temperature sensor for measuring a temperature around the sensor.
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Mr. Greg Sloan Branch Manager
Express Courier International, Inc. Express Delivery / Messenger Services
4301 Founders Way, Suite D, Chattanooga, TN 37416 4235100271, 4235108246
Greg J Sloan Director, President
Sloan Security Group, Inc Install High Security Perimeters/fences & Gates For Govt Facilities, Airports · Mfg Electrical Equipment/Supplies Trade Contractor
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