Measuring and testing – Meteorology – Electric disturbance
Patent
1979-07-19
1981-03-31
Myracle, Jerry W.
Measuring and testing
Meteorology
Electric disturbance
73189, G01W 102
Patent
active
042585686
ABSTRACT:
A self recording meter for recording water currents is described. The current meter comprises a housing having a vertical axis, three accelerometers each having a sensitive axis mounted at 90.degree. to each other within the housing wherein the sensitive axis of one of the accelerometers is coincident with the housing vertical axis, and the other axes are substantially horizontal, a magnetic compass disposed within the housing for measuring an angle defined between magnetic North and the sensitive axis of one of the substantially horizontal accelerometers, a depth sensor, and circuitry for emitting electronic signals from the accelerometers, compass and depth sensor indicating magnitude of horizontal current relative to depth, direction of horizontal current relative to depth, and magnitude and direction of vertical current relative to depth.
The meter is releasably secured to a weight such that it drops to the water bottom where a release mechanism separates the weight from the meter housing and a switching circuit concurrently activates the meter electronic circuitry such that current measurements are made as the meter rises to the surface. The meter electronic circuitry is deactivated upon the meter reaching the surface at which time a flashing light and radio beacon are activated.
Current measurements are recorded on a cassette tape for subsequent interpretation.
REFERENCES:
patent: 3854333 (1974-12-01), Richard
patent: 4191049 (1980-03-01), Bowditch et al.
Boetes Reinder
Sukhov Boris P.
Delbridge Robert F.
Fors Arne I.
Myracle Jerry W.
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