Design a stepped sine wave detector

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hi, i am an electrical engineer. i have expertise in embedded system design and Matlab.i can help you with this project. Kindly reply back and let us discuss project further then i can prepare a detailed work proposal for the project. regards

I am an Electrical Engineer having specialization in Electronics and Control, teaching in Electrical Department at FAST National University Pakistan. I am also persuing my MS degree in Electrical Engineering with specialization in CONTROL. I have taught the followings courses, and also done many projects related to these subjects as well as related to consumer electronics products. 1. Control System Design & Modelling (Continuous, Discrete, Linear, Non-Linear, Optimal, Fuzzy Logic + Matlab & Simulink) 2. Digital System/Logic Design (Verilog, VHDL, Logisim) 3. Micro-controllers (8051, Arduino, PIC) 4. Power Electronics (PSIM, MATLAB, PSpice) 5. Control of Electric Machine Drives 6. Circuit Analysis and Designe etc 7. PCB Design (Proteous + Ultiboard + Altium Designer) I assure you, if you assign your project to me, you surely gonna work with me in future. Note: I also provide the solution to Mechanical Engineering Projects.

I suggest to use something like arduino or other development board. What is operating temperature range for your device? What are values of voltage and current for relay dry contact ?

Hi, I am a post graduate power electronics engineer and having very good industrial experience of 8+ years in R&D and project development. I am excellent high frequency transformers design, circuits design, multi-channel LED Drivers, Regulated power supplies design with universal input to DC output, Audio amplifier, drives design, Filters design for harmonic analysis and Power factor correction, SMPS, LED drivers, DC-DC, AC-DC converters design, PFC interleaved boost converter, Battery management system, Battery chargers, UPS design, sine wave Inverters, solar grid tie inverters, Solar battery chargers and street light systems design from few watts to KW range using Buck, Boost, and Buck –boost, Interleaved boost/buck, Fly back Push Pull and H-bridge inverters. I have very good experience to design high voltage power supplies up to 50KV for capacitor charging power supplies using soft switching topologies. I have work experience to design from few watts to KW range meeting all compliances like EMI/EMC and safety standards UL etc.

Greetings, Interesting problem for sure. It may not be as straight forward as it looks. * 1st of all they are mains line voltages so have to be scaled down and isolated before the electronics can process it. * 2nd, the sine wave inverters mostly have wave smoothing filters which filter out the steps so that it's as close to a real sine as possible - which means the difference may be minute. * Even if the difference was there, it wont be easy to differentiate in time domain. I would think that the voltage have to be scaled down and filtered to identify the steps in frequency domain. And if it's noisy (which it might be) - digitization (ADC) and processing through a DSP might be required. * Having said all this - I might be over estimating - once we get to observe the real waveforms from the mains and inverter - we might be able to get some difference which is easier to identify. Overall, it requires some work in terms of evaluating the two waveforms before the design can be thought of. So I have just put an initial estimate and would update as appropriate. T & R Alok Pugalia

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Hi sir, We have designed many power electronics circuits, and designed pcb layouts for our clients. We have read your project and offer your our services at very low and affordable rates. We assure you the quality of service through various checks that are employed to avoid any compromise on quality of work. Let me introduce my team to you and generally what services we offer to our clients. We are team of expert engineers and developers who are sound experienced in embedded systems (arduino + other microcontrollers), programming, circuit designs, electronics, product designs, pcb layouts, database management, MySQL etc. We offer you our services at very low rates. Please discuss with us in details. We will deliver design and code, if you want us to send you prototype, you have to pay additional charges of prototyping and courier such as dhl etc. We are very friendly in nature and help our clients during and after projects completion. We are flexible in communications and rates. Very much looking forward to hear from you on this in coming days. Regards, Ahmed Lead Technical Engineer Turktroniks

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Hi. I am a professional Electronics Engineer having expertise in Sine wave detection and controls. Contact me.

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thank you for giving me the chance to bid for your project I am professional at PCB design and embedded systems, with many project similar to your requirement. I am anew at that platform (freelancer.com), so my bid is lower than the others, thank you

The following procedure will be adopted to complete the project. This circuit will include a controller board with a step down transformer, a custom board that will power the system and a circuit to convert input ac supply wave to half ac wave. With ADC the matrix will save the values and they will be compared to a matrix of an ideal sine wave. the results will be displayed on the LCD and an output signal would be generated to active a relay. There is also another solution. Using a sensor to detect and differentiate the existence or not existence of Ripples of the current. Based on the signals which will be sent form the sensor to a MCU. The MCU will send a signal to the display screen to show “Generator on” or “Generator off/Main power supply ON” and will also send another signal to switch on the relay. Kindly consider my proposal. Regards

A proposal has not yet been provided