Infusion Control Alarm: Traditional Chinese Circuit Design Guide
In short: Traditional Chinese Infusion control alarm: Circuit Design, Parts List & Workshop Prototype Guide (Alarm Device). This entry documents a circuit & prototype taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 2414 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
Infusion control alarmFigure 77Patients need someone to take care of them during infusion, especially at night. When there is no dedicated person to take care of the patient, medical accidents may occur if the infusion is finished or for other reasons.The infusion control alarm shown in Figure 77 can promptly remind nursing staff to take effective measures.The working principle of the circuit is to use the weight of the infused water to act on a tension spring. The tension spring will produce displacement under different weights, thereby controlling the clutch of the alarm contact.The tension spring can be a tension spring from a broken bicycle lock (or similar other springs can be used). …
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