The Single-Chip Controlling System
Transfusion Speed in the Therapy
Abstract: With the development at full speed of science and technology in recent years, the application of the one-chip computer is being moved towards deepenning constantly, drive tradition is it measure crescent benefit to upgrade day to control at the same time. In measuring in real time and automatically controlled one-chip computer application system, the one-chip computer often uses as a key part, only one-chip computer respect knowledge is not enough, should also follow the concrete hardware structure , and direct against and use the software of target's characteristic to combine concretly, in order to do perfectly.
This design introduces an intelligence speed control system for transfusion. We use the 586 PC as the home site controller, AT89C51 single-chip by way of node controller, composes a distributed local control network. The system could detect the drops and the location of liquid through the transfer line with optic-electric detects technique. Control the high of bottle with an electromotor, realization transfusion speed automatic adjust, made transfusion become more convenience and safety.
The subordinate site use AT89C51 Single-chip controller as the core instrument to realize the detection of the transfusion current velocity, the abnormal current velocity alarming, the setup and control of the current velocity, etc. This software is built by MCS-51 assembly language programming.
We use the RS-485 bus unit to connect the communication of the home site and the subordinate site, this can greatly realize the home site and subordinate site network design.
Key words: Speed measure; Self-Correcting ; Transfusion control ; Serial communication.