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Overhead Power Line Monitoring
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This project involved a system that was developed to remotely monitor overhead
distribution lines in cities and towns locally and abroad. Used on 4,000 to
45,000 volt lines. Key features are the transmission of data via a 88 MHz to
108 MHz RF carrier a short distance to a receiver and PC board that gathers and
stores this information. The data is then forwarded through a modem and cellular
phone to an office somewhere in the country. Not only is the data able to be
received but also all programs and controls on data storage could be remotely
changed by this remote link. All information and controls can also be changed
locally as well by a handheld device. The transmitter on the power line used a
microprocessor and ADC IC to measure amps, volts, pf, etc. The receiver
contained a microprocessor to convert received data and convert this signal into
an analog signal using a DAC IC. Measured signals could also be displayed on a
hand held LCD unit. Watchdog circuitry was also developed to keep the
microprocessors running and operating correctly. Consulting work for Powtel,
Ajax Ontario.
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