Author_Institution :
Sch. of Comput. Sci. & Eng., Jiangsu Teachers Univ. of Technol., Changzhou, China
Abstract :
The manual operation mode of measuring transfusion speed in medicine is inconvenient and inaccurate, and is likely to cause dispute. A supervisory computer was designed to monitor transfusion speed. It mainly consisted of MCU C8051F930 as the control core, a photoelectric switch as liquid drop sensor, a threedigit seven-segment LCD, four keys, four LEDs and acousto-optic alarm circuits. The supply voltage for C8051F930 is 0.9 to 3.6 V, so the monitor can work in one-cell mode (supports 0.9 to 1.8 V operation) or two-cell mode (supports 1.8 to 3.6 V operation). The operating range of one cell is extended and the service life of cells in two-cell mode will be increased. The monitor has the merits of low cost, simple structure, convenient operation, accurate counting, quick respond, reliable functions, small volume, light weight, ultra-low power, low drive voltage, etc.
Keywords :
acousto-optical devices; biomedical equipment; computerised monitoring; flow control; flow measurement; microcontrollers; patient monitoring; photoelectric devices; C8051F930; LCD; LED; MCU; acousto optic alarm circuits; liquid drop sensor; one cell mode; photoelectric switch; supervisory computer; transfusion speed measurement; transfusion speed monitor; two cell mode; voltage 0.9 V to 3.6 V; Computerized monitoring; Electronics packaging; Light emitting diodes; Manuals; Packaging machines; Switches; Switching circuits; System-on-a-chip; Velocity measurement; Voltage;
