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

Tietoa työnantajasta:
( 0 arvostelua ) United States

Projektin tunnus: #8656313

35 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön


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
(149 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
(122 arvostelua)

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
(120 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
(17 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
(25 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
(18 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
(56 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
(23 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
(21 arvostelua)

A proposal has not yet been provided

$388 USD 10 päivässä
(6 arvostelua)

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

$694 USD 10 päivässä
(6 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
(2 arvostelua)

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
(5 arvostelua)

A proposal has not yet been provided

$694 USD 10 päivässä
(1 arvostelu)

I have already worked on these type of experiments and can completer your project but I can not fully understand your requirements. If you want you can contact me and we can further talk about your project.

$666 USD 10 päivässä
(1 arvostelu)

I have 23+ years experience in PCB layouts using OrCAD I have done many multi-layered boards in the past doing many different types of boards from double-sided boards to 16 layers boards and anything in between.

$777 USD 10 päivässä
(0 arvostelua)

I have several designs already in my corner dealing with solar panels and LVD (Low-Voltage Disconnect) detection. Adapting one of these designs to do what you need should be a simple task. I would recommend using a mi Lisää

$1000 USD 10 päivässä
(0 arvostelua)

Greetings!!!! This is Chatrapathi Reddy, from Vedas labs, India. We have 18 years experience in the semiconductor ATE designs, load board, probe card, high speed design business etc. Our Capabilities High Spee Lisää

$694 USD 10 päivässä
(0 arvostelua)

A talented design engineer with more than 15 years in design engineering experience, also issued 3 US patents.

$694 USD 21 päivässä
(0 arvostelua)

Hello, we are 4 electrical engineers having experience of 13 years in making high speed digital and analog circuits. you can have a look at our portfolio at to h Lisää

$777 USD 30 päivässä
(1 arvostelu)