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A whirling hot-wire anemometer with optical data transmission

1985; IOP Publishing; Volume: 18; Issue: 6 Linguagem: Inglês

10.1088/0022-3735/18/6/012

2051-5685

Mort Walker, Martin Maxey,

Wind and Air Flow Studies

Previous whirling hot-wire anemometers have relied on slip rings to connect the sensor to the bridge circuit. An alternative arrangement is described where a low power consumption anemometer circuit rotates with the hot wire, with direct connection to the sensor. The bridge output signal is transmitted optically by an LED to a fixed receiver, decoded and then processed normally. The system is tested in a simple experiment with homogeneous grid turbulence. The design may also be useful for remote anemometry.