High Shine Remote Controlled White Drove Knob.

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High Brightness Remote Controlled White LED Bulb Group 27 Tzong-Yu Chan Justin Czarnowski  April 30 th , 2009 Introduction High brilliance LED light apparatus could supplant current industrially accessible white LED lights which speak the truth 300 lumens
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High Brightness Remote Controlled White LED Bulb Group 27 Tzong-Yu Chan Justin Czarnowski  April 30 th , 2009

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Introduction High shine LED light installation could supplant ebb and flow industrially accessible white LED lights which are around 300 lumens The RF control highlight permits client to control various lights all the while

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Features High brilliance light yield identical to 100W glowing light (1700 lm) RF remote control on/off splendor diminishing Compatible with 120Vac from the outlet Low power utilization, high unwavering quality

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High Brightness Remote Controlled White LED Bulb Power Supply LED units Receiver Remote Control

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System Overview Hardware: Power Supply, RF Receiver, Dimming Unit, LED Light String, RF Transmitter Software: A/D and serial transmission code for remote PIC Serial gathering and PWM yield code for collector PIC

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System Overview Power Supply Circuit LED Current Driver Heat Dissipater Bridge rectifier AC Power Source Power Converter PIC LED Circuit RF Receiver Wireless Remote RF Transmitter RF Transmitter 9V Battery 5V controller Potentiometer and switch PIC

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Hardware Overview Power Supply Take 120Vac power and change over to stable most extreme 33 Vdc and 1 Amp Transfomerless to decrease space and weight Dimmer Unit Change the measure of momentum experiencing the LEDs by fluctuating the PWM obligation cycle RF Receiver & Transmitter Allow client to control the light remotely

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Power Supply Can supply up to 33Vdc to the LED circuit Transformerless Maximum ebb and flow: 1Amp 120Vac info specifically from the divider outlet

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Tranformerless Power Supply Resistive Transfomerless Power Supply

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Tranformerless Power Supply Capacitive Transfomerless Power Supply

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Tranformerless Power Supply MOSFET Gate Controlled Transfomerless Power Supply Source: Supertex Application Note A H52

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HV9931 Fixed recurrence PWM controller IC intended to control LEDs Input voltage: 0~470V Source: Supertex Application Note A H52

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Power Supply Source: Supertex Application Note A H52

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Power Supply Testing Result

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Wireless Remote Control Objectives: Operate up to 30 feet far from knob Line-of-sight not required On/off and darkening ability Predictable conduct when out of extent

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Wireless Remote Control Design: Use RF transmission: Linx LC TX/RX pair Remote PIC catches simple brilliance esteem as a 8-bit computerized esteem utilizing ADC 8-bit esteem transmitted remotely through Linx chips Receiver PIC yields PWM signal with obligation cycle comparing to 8-bit esteem

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Wireless Remote Receiver Side Wireless Remote RF Transmitter RF Transmitter 9V Battery 5V controller RF Receiver PIC Potentiometer and switch PIC to LED ebb and flow driver…

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Wireless Remote Schematic Voltage Regulator PIC RF Transmitter

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Wireless Remote Receiver Remote Linx RF recipient Linx RF transmitter PWM yield to LED ebb and flow driver Brightness control potentiometer

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RF transmission Baud rate = 9600 bps => 104us period Data information to transmitter (remote) Data yield from beneficiary Data matches - remote operation affirmed! Remote range just around 3 inches…

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RF transmission confirmation 8-bit splendor quality is cushioned with driving and trailing "enchantment bytes" Receiver just changes PWM obligation cycle (shine) if enchantment bytes are right Ensures unsurprising knob operation notwithstanding when remote leaves range, loses power, and so forth

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PWM signal Receiver PIC changes over the 8-bit information into a PWM obligation cycle rate PWM signal controls LED ebb and flow driver which thus controls brilliance The subsequent shine of the LED globule is relative to the obligation cycle of the PWM signal PIC (collector) PWM signal Serial information (8-bit)

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25% 2% T = 20uS 75% 98% half Duty cycle = 100% (most extreme brilliance) PWM signal Duty cycle = 0% (totally dull)

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Challenges Originally planned to utilize MAX611 chip to change over 120 VAC to +5 VDC for controlling Linx chip and PIC on beneficiary side MAX611 is no more accessible Workaround: utilize 9V battery on recipient for exhibit purposes

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Potential arrangement: BIAS Power BPI 200-05-00 Requires negligible update of beneficiary circuit Would require huge amount request Source: www.biaspower.com

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LEDs Cree XR-E R2 container Brightest financially accessible single LED 228 lumens yield at 1000 mA data ebb and flow Forward voltage ≈ 3.7 V Star heat sink for warmth scattering

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LEDs 100W glowing globule yield: ≈1700 lumens (228 lumens/LED) x (10 LEDs) = 2280 lumens!

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XR-E R2 execution Source: "Drove Flux Spreadsheet." Adam Royall Smith

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Actual Performance LED power supply does not yield as much present as outlined Designed to yield 1000mA yet just yields 100mA normal! LEDs generally diminish…

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Actual Performance Actual greatest yield is just 40 lm/LED Total max. yield is just 400 lm Falls shy of design objectives

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Successes and Failures: RF go just a couple crawls Very low flow yield Underperformance of ebb and flow driver circuit brought on low brilliance Brightness control not smooth for yield of high splendor LEDs Successes: RF correspondence utilitarian Transformerless LED driver Obtained high shine and high proficiency LEDs Smooth A/D change on remote PIC Receiving PIC unravels information and yields fitting PWM signal

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SWOT Analysis Weaknesses Limited remote range Low shine because of ebb and flow driver circuit High cost Buzzing sound at high splendor Strengths Low power utilization Transformerless High shine/high productivity LEDs Wireless control Dimming ability Opportunities Potential to supplant glowing knob Could be utilized as a part of difficult to-administration zones because of longer lifetime Threats Not disengaged from AC line Undervoltage condition

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Sources http://www.cree.com/items/pdf/XLamp7090XR-E.pdf http://www.biaspower.com/"Drove Flux Spreadsheet." Adam Royall Smith http://filebox.vt.edu/clients/adsmith4/Lights/Emitter%20Flux%20Datacalc.xls http://www.linxtechnologies.com/Products/RF-Modules/LC-Series-Low-Cost-Transmitter-and-Receiver-Modules/www.selectronic.fr/includes_selectronic/pdf/Maxim/MAX_611.pdf Supertex Application Note A H52 www.supertex.com/pdf/app_notes/A H52.pdf Supertex Unity Power Factor LED Lamp Driver Datasheet www.supertex.com/pdf/datasheets/HV9931.pdf "The Nature of Light." http://www.ccri.edu/material science/keefe/light.htm

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