| 摘要 |
A buoyancy control device includes a buoyancy compensator to be worn by a scuba diver, a compressed air tank, a depth or pressure gauge and a valve connecting the buoyancy compensator and compressed air tank for releasing air into and out of the buoyancy compensator. A microprocessor is connected to the depth gauge and the valve for controlling the amount of air in the buoyancy compensator in response to the depth of the diver. In addition, the microprocessor is programed for automatically controlling the rate of ascent of a diver under normal conditions and for a faster rate of ascent under emergency conditions. The device also includes an override function which allows a second diver to override the normal rate of ascent and to initiate the faster rate of ascent in an emergency.
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