Hubbell Limited

Lei Han

John Evan Lane

A brown-out detection apparatus including a voltage sensing circuit, a first circuit, and a second circuit. The voltage sensing circuit senses an input AC voltage having a first nominal input voltage value or a second nominal input voltage value. The voltage sensing circuit includes an output outputting a reference DC voltage proportional said input AC voltage. The first circuit is responsive to said output of said voltage sensing circuit. The first circuit includes a first output outputting a first voltage value when said input AC voltage is below a threshold voltage level and a second voltage value when said input AC voltage is above said threshold level. The second circuit is responsive to said first output. The second circuit includes a second output outputting a second control signal indicative of a brown-out condition of said input AC voltage.

LED-based emergency lighting equipment and methodology

An emergency lighting unit including a power input. a light source, a battery configured to receive charging current from the power input. wireless communication circuitry configured to receive a wireless communication signal, and a controller connected to the wireless communication circuitry. The controller is configured to control the charging of the battery based on the wireless communication signal.

Programmable emergency lighting device including near-field communication

Systems and methods provide LED-based emergency lighting utilizing AC-DC switch mode power conversion technology, NiMH battery technology, and emergency lighting lamps that use high power white LEDs as the emergency lighting source. A low voltage microprocessor based circuit design reduces the battery input voltage for the unit to a nominal level of 2.4VDC. The microprocessor executes a pulse charging algorithm to lower battery maintenance mode power consumption levels and extend the useful life of the battery. Brownout detection technology does not require the determination of the AC input voltage level or transmission of the brownout detection signal to the secondary side of the circuit. A rechargeable battery is charged by a charge current selectively set to a bulk charge value, a trickle charge high value, or a trickle charge low value based on sampling of the voltage of the rechargeable battery and the charge current.

An emergency lighting unit including a light source, a wireless communication module configured to receive a wireless communication signal, and a controller connected to the wireless communication module. The controller is configured to set a system parameter of the emergency lighting unit based on the wireless communication signal, and control the illumination of the light source based on the one system parameter.

An emergency lighting unit. The emergency lighting unit includes a light source, an antenna, a near-field communication ('NFC') module, and a controller. The antenna is operable to receive a wireless communication signal. The NFC module is connected to the antenna, and the NFC module is operable to write, to a memory, information associated with the wireless communication signal. The controller is connected to the NFC module. The controller is operable to read the information associated with the wireless communication signal from the memory, set one or more system parameters of the emergency lighting unit based on the information associated with the wireless communication signal, and control the illumination of the light source based on at least one system parameter set based on the information associated with the wireless communication signal.

An emergency system including an auxiliary power supply, a charging circuit, a brown-out circuit, and a controller unit. The auxiliary power supply connected to a device. The charging circuit having an input voltage, provided by a mains power supply, and an output, configured to provide power to the auxiliary power supply. The brown-out circuit operably connected to the charging circuit and configured to sample the input voltage. The control unit receiving the sampled input voltage and activating the device when a brown-out condition is detected, the detection based on the sampled input voltage.

Emergency system with brown-out detection

Systems and methods provide LED-based emergency lighting utilizing AC-DC switch mode power conversion technology, NiMH battery technology, and emergency lighting lamps that use high power white LEDs as the emergency lighting source. A low voltage microprocessor based circuit design reduces the battery input voltage for the unit to a nominal level of 2.4 VDC. The microprocessor executes a pulse charging algorithm to lower battery maintenance mode power consumption levels and extend the useful life of the battery. Brownout detection technology does not require the determination of the AC input voltage level or transmission of the brownout detection signal to the secondary side of the circuit. A rechargeable battery is charged by a charge current selectively set to a bulk charge value, a trickle charge high value, or a trickle charge low value based on sampling of the voltage of the rechargeable battery and the charge current.

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Greenville, SC, United States of America

Lei Han