| 摘要 |
PURPOSE:To use a computer for various sensors in common and facilitate design and manufacture, and to reduce the cost by inputting outputs of one or plural sensors to a common portable computer through interfaces. CONSTITUTION:Plural sensors, e.g. pH sensor 11, oxygen concentration sensor 12, and solution concentration sensor 13 and interfaces 21, 22, and 23 are formed integrally, and the outputs of the sensors and A/D-converted by the interfaces 21-23. Further, a multiplexer 5, the portable computer 3, and an output device 4 are formed in one body. The signals from the respective sensors are inputted to the multiplexer 5 and the portable computer 3 controls the measuring operation of each sensor 1 and performs D/A conversion to display the result on the output device 4. Thus, the computer common to the respective sensors is used, so the design and preparation are facilitated and the cost is reduced. |
