| 摘要 |
PROBLEM TO BE SOLVED: To stably carry out automatic measurements for a long term by constituting a power source for a position-detecting part, a propeller part, a water quality data-transmitting part and a control part to be a separate system from a power source for a sensor part. SOLUTION: Primary power sources 9a, 9b, and a secondary power source 9c are provided as power sources for driving parts. The primary power source 9a supplies electricity to a positiondetecting part 1, a water quality data- transmitting part 7, a control part 10 and an SRAM 8, and the primary power source 9b feeds electricity to a propeller part 2. The secondary power source 9c uses a solar battery 9d as a charging source, supplying electricity to a sensor part 4, an instrumentation control part 5, a water quality data-processing part 6, etc., consuming not so large power. In other words, the primary power sources 9a and 9b are used to move the parts when a measurement is not conducted, and the secondary power source 9c is used as a power source for measurements. Power sources of different systems are used for a measuring system and a non-measuring system. The primary power source 9b is a large power source because the propeller part 2 consumes a large quantity of power. |
