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Education Tool for AC/DC EMF Measurement

I am developing an educational tool to detect the transmission and presence of low frequency waves, radio waves, AC electric fields, AC magnetic fields, DC electric fields, DC magnetic fields (6 circuits total). The project must not involve any programming so the design cannot include any microcontrollers. If you are an expert in analog circuit design, this job is for you.

The project is fairly simple. The goal is to have an electrical schematic for each of these 6 circuits. These do not have to be precision instruments, but they should function as the specifications below describe. I'm looking for more than just op-amps. This will involve choosing the right antennas and ensuring that a DC signal is separated from an AC signal. I expect you are an electrical engineer, an electrical engineering student, or a skilled technician.

Each of these circuits should be able to run on 5 or 6 Volts, and have an analog output indicating signal strength of 0 to 5 Volts.

Circuit 1: Detection of Low frequency waves

Design a circuit that can detect low frequency waves that fall within the range of 500 Hz to 100 KHz. A steep linear falloff outside of this range is desirable. Choose 1 or more than 1 antenna type in a triaxial configuration. The output of the each antenna is summed (does not need to be a true Euclidean norm). The output should be range from 0-5 volts to correlate from 0.0 - 10 mW/cm^2.

Circuit 2: Detection of Radio waves

Design a circuit that can detect radio waves that fall within the range of 100 KHz to 100 MHz. A steep linear falloff outside of this range is desirable. Choose 1 or more than 1 antenna type in a triaxial configuration. The output of the each antenna is summed (does not need to be a true Euclidean norm). The output should be range from 0-5 volts to correlate from 0.0 - 10 mW/cm^2.

Circuit 3: Detection of an AC electric field

Design a circuit that can detect the AC component of an electric field that falls within the range of 40 Hz to 2000 Hz. Choose 1 or more than 1 antenna type, or other sensor in a triaxial configuration. The output of the each antenna is summed (does not need to be a true Euclidean norm). The output should range from 0-5 volts to correlate from 0 - 1000 V/m.

Circuit 4: Detection of an AC magnetic field

Design a circuit that can detect the AC component of a magnetic field that falls within the range of 40 Hz to 2000 Hz. Choose 1 or more than 1 antenna type, hall effect sensor, or other sensor in a triaxial configuration. The output of the each antenna is summed (does not need to be a true Euclidean norm). The output should range from 0-5 volts to correlate from 0 - 100 mG.

Circuit 5: Detection of a DC electric field

Design a circuit that can detect the DC component of an electric field that falls within the range of 40 Hz to 2000 Hz. Choose 1 or more than 1 antenna type, or other sensor in a triaxial configuration. The output of the each antenna is summed (does not need to be a true Euclidean norm). The output should range from 0-5 volts to correlate from 0 - 1000 V/m.

Circuit 6: Detection of a DC magnetic field

Design a circuit that can detect the DC component of a magnetic field (static flux density). Choose 1 or more than 1 antenna type, hall effect sensor, or other sensor in a triaxial configuration. The output of the each antenna is summed (does not need to be a true Euclidean norm). The output should range from 0-5 volts to correlate from 0 - 100 mG.

Required: Each schematic must show the type of electrical component, the electrical value (i.e. 4 kOhms), and be low-cost commerically available (non-obsolete). The dimensions, such as the size, diameter, etc of the antennas, and details of the shielding must be described. Specifics about the component type if important, such as Tantalum over Ceramic, should be specific. The final product of your work will be a pdf, word document, and or image files. 10% error is allowed for all of the numbers described above.

Skills: Circuit Design, Electrical Engineering, Electronics, Engineering, PCB Layout

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About the Employer:
( 4 reviews ) Pittsburgh, United States

Project ID: #5009250

5 freelancers are bidding on average $541 for this job

betaenergy

Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of ha More

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usman710

Hi i'm Masters in Telecommunications Engineering with expertise in analog electronics/microwave circuit design. I have publications in IEEE related to antennas. I can design all the circuits for you using Agilent ADS o More

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jacer81

I am electrical engineer with several years of consultancy experience as well as university teaching. You project is quite demanding if properly [url removed, login to view] quoting a reasonable price and time frame.

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sanjoygorai87

This is a team of Electronics engineers with VLSI specialization and expert in Circuit Design. Please share the project details.. we can assure you a good solution with proper illustrations.. regards whizzhelp@SR

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Laretech

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aliasgar6351

Hello, I am a post graduate in Electrical Engineering and my friend is a Post graduate in Electronics and Communications Engineering and we both are Professors in a reputed Engineering Colleges. We are proficient in ou More

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