ABSTRACT
With the development and application of information technology and
microelectronics technology, in medical and health field a concomitant information
revolution is underway. In medical and health field, according to the needs of the
infusion flow control, this paper presents a kind of control device based on single-chip
technology of liquid dropping speed monitoring scheme. The device is mainly in
order to overcome the manual monitoring liquid level and liquid flow, the
consumption of energy is too large, the efficiency is too low, the disadvantages, the
device in theory and practical application has important value, and to the field of
medical health is more important.
On problems of digital medical transfusion status of photoelectric detection and
drop speed monitoring device, through the use of its core is AT89C51 microcontroller,
is based on the input composition and the reflective photoelectric sensor in the matrix
keyboard keys system. The output is in intelligent control bottle moving stepper
motor, LED digital tube and bee sound alarm circuit composed of. Take the hardware
design and the software design and simulation, is used in hardware circuit of infrared
reflective photoelectric sensor detection collecting droplet data, and detection of the
liquid storage bottle residual liquid and alarm. Through the keyboard input control set
of dropping speed, step motor control the bottle move to change for control the Drip
drip speed MCU drive gear motor drives the spiral pressing mechanism control liquid
drip infusion, and LED digital tube display dripping speed of detection value. System
software mainly includes MCU control procedures, Disu detection procedures,
dripping speed display program, dripping speed control procedures, alarm program is
made up of the following parts. In the simulation, the use of Proteus and keil software
simulation software design, more scientific the theory is applied in the actual medical
further expansion, in order to make it more intelligent, automation, the above,
hypogynous machine (Master / slave) way into digital medical infusion monitor
network. Will be more helpful to the clinical application.
Keywords: spot monitoring; photoelectric sensor; AT89S52 MCU; stepping motor
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