Mobile solar power units have been recognized as a promising route toward decreasing the dependence of the military on fossil fuel generated power. To date, a multitude of mobile solar powered systems are under development that range from man portable highly flexible photovoltaic blankets, solar powered aircraft, trailer based hybrid power units, and underwater sensor applications.

Spectral radiometers are widely used to measure the spectrum of emitted, transmitted, or reflected light of a given material. Current spectral radiometers generally require sophisticated optical components for beam forming and diffraction, refined electronic components for the signal readout or moving parts that contribute to inefficient power consumption and high production costs.There are all kinds of car daytime running lights with good quality.

"We have invented a novel minimum size, ultra-low power spectral radiometer unit with integrated data storage functionality and a battery lifetime of up to several years," said Dr. R. Hoheisel, NRL Solid State Devices Section. "In addition, the system can be produced at the expense of under $20 and features very high sensitivity and linearity."

The sensor system can be used in remote solar radiation monitoring applications such as mobile solar power units as well as in long-term environmental monitoring systems where high precision and low power consumption is a necessity. Because of the modularity of the system, adjustment to different wavelength bands as well as different light intensities is easily possible, providing a tailored solution to suit the needs of the end-user.

"A challenge to research of long-term expeditionary devices was we had no information regarding when, and how long, mobile solar power units were in the sun," Hoheisel said.We installed flexible LED Strip lighting in our kitchen for under cabinet and within cabinet lighting. "These units have a dynamic range of 0.01 - 2 suns measured in 30-second intervals, a data capacity of 128 megabytes (MB), an average power consumption of 100 microwatts (uW) and an independent real time clock."

Due to its minimum size combined with an extremely long lifetime, this completely autonomously operational sensor system paves the way for a dramatically wider operational range of solar radiation measurement units leading to not only a better understanding but also a highly reliable and precise forecast of available solar power for various mission profiles.

The U.S. Marine Corps (USMC) Expeditionary Energy Office (E2O), have developed and prototyped this photovoltaic system to meet the unique needs of USMC expeditionary power for robust, high-efficiency solar panels suitable for adaptation to rechargeable batteries in the field. USMC E2O and the Office of Naval Research (ONR) Expeditionary and Irregular Warfare Office have contributed to this research.

Wireless dimming

Wireless dimming allows dimmable lighting to be retrofitted without running new wires, and the cost of extra wiring to be saved in new-builds.

Its introduction, particularly for domestic installations,Are you still hesitating about where to buy hid kits? coincides with the rise of LED lighting, but it has been around for a while.“We have a wireless system for streetlights called LeafNut, and for indoor we are working on a different system, called EyeNut,” said Dale.

Originally developed for HID and fluorescent streetlights, LeafNut uses the proprietary WiMAC protocol giving bidirectional control of 256 streetlights per hub on the licence-free 868MHz band.
The LeafNut communication module replaces the photocell mounted on top of most UK streetlamps.Range is 1km and the hub uses GSM to communicate with the main server, said Dale. Users can set switching times and time intensity profiles, and warning of lamp failure is sent back to the server.EyeNut is based on ZigBee. Further details remain under wraps until its official launch.

Light Engines

With the manufacture of light engines being a PCB-based process, and Harvard having an automated PCB production line on site, it was only a matter of time before the firm started making light engines.It has chosen to make a limited range of standard engines as well as engines with custom LED positioning.“A lot of the business is custom LED placement. There are a few standard ones: a 270×270 square module and some circular ones that fit in down-lighters that used compact fluorescent lamps. Four of the square ones will fit in a 600×600 panel,” said Dale.Please visit his website at

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