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Capacitive Sensor Setup

Property Classification through Sensing MIDN 1/C Nicholas A. Dadds Advisor: Dr. Svetlana Avramov-Zamurovic Co-Advisor: Dr. Kenneth A. Knowles Weapons and Systems Engineering. Roughness Sensor Stanton 400.V3. Capacitive Sensor Setup. Rabbit 2000. IC Cable. Temperature Sensor

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Capacitive Sensor Setup

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  1. Property Classification through SensingMIDN 1/C Nicholas A. Dadds Advisor: Dr. Svetlana Avramov-ZamurovicCo-Advisor: Dr. Kenneth A. Knowles Weapons and Systems Engineering Roughness Sensor Stanton 400.V3 Capacitive Sensor Setup Rabbit 2000 IC Cable Temperature Sensor MLX90247 Signal Conditioning Circuit Sensor Aluminum Roughness Profile Material AD7746 *Converts capacitive reading to digital info for Rabbit* Capacitive Sensor Leads PVC Roughness Profile *Output signal is an analog voltage Lead Length Dielectric constant of Material Signal Conditioning Circuit Internal Schematics Wood Roughness Profile The plots shown above were obtained through the use of the Stanton 400.V3 Stylus. These plots show the general surface roughness of a given material and when viewed in comparison we get an idea of how the two surfaces relate to each other with respect to their roughness characteristics. We are able to compare the mean voltage value produced across a defined length of the material as well as the maximum peak voltage value, and the frequency of occurrence. Currently the roughness sensor is only connected so that it can obtain signals when moving to the left. However, for future work we will connect the right signal as well as design a device that will standardize the height and displacement of the sensor for each measurement. The dielectric constant in the capacitance equation above varies depending on the type of material placed around the sensor. Therefore, each specific material type will produce a unique capacitive result. Under stable conditions, when calibrated for a specific set of materials this sensor is capable of providing data useful in determining what material is in the surrounding environment.

  2. Signal Conditioning Circuit Roughness Sensor Stanton 400.V3 PVC Roughness Profile Aluminum Roughness Profile Wood Roughness Profile

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