Circuit and PCB design for solar battery charged product

Description of system:

The system consists of a battery, load (LED strip), solar cells, light sensing device and motion sensing device. The Load, Solar cells and Battery are independent of the Printed Circuit Board.

The desired operation is described as:

When the product is in the dark, the product will be “armed” thus enabling the LED light strip to be turned on if motion is sensed by the onboard motion sensing device.

If motion is detected the LEDs are energized and remain energized for a length of time after this event. (I think the time interval will be required as the motion sense devices I have seen have a random signal or on off triggers).

When the product is in daylight, the PCB will then need to control the solar charging of the battery pack via the solar cells.

Ideally I would like the system to be able to illuminate the LEDs for a minimum of 4 hrs. per night. The product will be mounted with the face of the solar cells perpendicular to the ground and on the exterior of motor vehicles. It is assumed that for an optimum charge the vehicle will have been outdoors for the daylight hours.

Components: (The values I have are simply where I am at….. not sure how correct any or all of them are for a fully functioning system.

Solar cells: (2) 3Vdc cells producing 250mA (In series charging at 6vdc?)

LED light strip: (1) 3Vdc with approximately 120mA current draw

Battery Pack: (1) pack comprised of (3) 1.2 Vdc lithium ion cells operating at 3.6Vdc. (1200 mAh ????)

Vibration sensing device: (Signal Quest vibration motion sensing component (This was simply something I found that looks like it may be a cost effective solution????)

Light sensing device (photo cell????) not sure, but something inexpensive like on throw-away solar/LED yard lights. This may be mounted on the PCB in a way to have it in the front light exposed face of the product or mounted independently of the PCB.

I will require an NDA.

Taidot: Piirisuunnittelu, Piirilevyn asettelu

Näytä lisää: time-series design, pcb circuit board design, led light design circuit, ion design, inexpensive design, how to design circuit, front yard design, design quest, design in motion, component board, charged to, simple printed pcb design circuit, pcb design circuit pen drive, pcb design circuit diagram, solar inverter design circuit, pcb design circuit diagram inverter, power supply pcb design circuit, pcb battery power supply design, battery pcb design, product design specification motor bike, pcb design circuit power supply

About the Employer:
( 0 reviews ) United States

Projektin tunnus: #8656313

36 freelanceria on tarjonnut keskimäärin 824 $ tähän työhön


Hello, I have been associated with Hardware design (Circuit / Electronics design), PCB design, PCB Manufacturing, Component procurement, PCB Assembling and Functional testing for over 7 years. I have used various C Lisää

1000 $ USD 25 päivässä
(81 arvostelua)

Dear sir, We have previous experience with LED lights control on motion detection as well as solar charging devices. Please see our profile for previous designs. I will send some videos of previous projects on your Lisää

1111 $ USD 20 päivässä
(14 arvostelua)

Hello, Have a great Day. My name is Shahbaz Ali. I am running a company for prototyping Electronic devices. We will deliver the fully working device. We have already developed Solar charging circuits, motion sesns Lisää

1421 $ USD 30 päivässä
(11 arvostelua)

I have over 35 years experience as an electronic design engineer, please see my profile for more details I have just recently designed a solar charger using the highly efficient LT3652 Solar tracking device so feel s Lisää

694 $ USD 10 päivässä
(13 arvostelua)

Hi, i've just finished similar solar projects and i am therefore versed in Highly efficient solar charging products. I use the PIC XLP series in my low power solar designs (extra low power range of micro controllers ) Lisää

1111 $ USD 30 päivässä
(6 arvostelua)

hi sir i am an expert electrical engineer i can do it for you i have almost 7 years of experience in this field i assure you quality work and on time delivery please have a look at my profile i am waiting for your rep Lisää

1263 $ USD 30 päivässä
(16 arvostelua)

I am an Electrical Engineer having specialization in Electronics and Control, teaching in Electrical Department at FAST National University Pakistan. I am also continuing my MS degree in Electrical Engineering with spe Lisää

1111 $ USD 10 päivässä
(45 arvostelua)

Hello, I have read your project information and I have some solution for you based on my previous experience: I have work with a very good solar cell that can provide 4.5V and close to 250mA current and works excell Lisää

1000 $ USD 20 päivässä
(10 arvostelua)

I have read and fully understood your requirements.. Please open chat to discuss further… _____________________-----------------------------------_____________________________------------------

694 $ USD 10 päivässä
(5 arvostelua)

Hi I am interested to this project. I am familiar with electronics, PIC microcontroller as well as PCB design by eagle. Thanks.

333 $ USD 20 päivässä
(17 arvostelua)

Hi, I am a post graduate power electronics engineer and having very good industrial experience in product design and development. I am excellent in Regulated power supplies design, sine wave Inverters, solar grid tie Lisää

777 $ USD 10 päivässä
(10 arvostelua)

A proposal has not yet been provided

694 $ USD 10 päivässä
(7 arvostelua)

Dear Customer, Having quite lot of experience wit batteries, cells NiMh and Li-Ion, Li-Po, I can recommend myself. Please check my past battery projects at: [url removed, login to view] Lisää

777 $ USD 10 päivässä
(1 arvostelu)

Hello, I read your ad and I would wish to contribute to the outcome of your work effectively, as an electronics engineer, especialy power electronics. Please take a look at my portfolio to get an idea of my backg Lisää

277 $ USD 9 päivässä
(1 arvostelu)

A proposal has not yet been provided

388 $ USD 10 päivässä
(1 arvostelu)

hello employer we have very skilled team of experts in the relevant field. we are interested in this project. kindly reply me for more details.

283 $ USD 25 päivässä
(0 arvostelua)

as for last 10 years experience in this field it will be my opportunity to serve you for this project

777 $ USD 22 päivässä
(0 arvostelua)

A proposal has not yet been provided

822 $ USD 14 päivässä
(0 arvostelua)

Hello, Thank you for taking the time to review our bid! We are really eager to work on your project. We are a highly motivated team of adept professionals so we can deliver you the work timely. Thank you for yo Lisää

525 $ USD 10 päivässä
(0 arvostelua)

A proposal has not yet been provided

694 $ USD 10 päivässä
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