Medical infusion alarm
A technology for alarms and infusion bottles, which is applied to alarms, liquid level indicators, instruments, etc., can solve problems such as blood return, troubles for patients' families, and increase the heavy burden and work intensity of medical staff, so as to improve work efficiency and reduce heavy workload. The effect of burden and reducing work intensity
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[0018] When there is liquid in the infusion bottle, the light emitted by the infrared emitting tube (1) is refracted by the liquid in the infusion bottle, and the infrared receiving tube (2) cannot receive it normally; when the liquid in the infusion bottle reaches a critical state, the liquid level The light emitted by the infrared emitting tube (1) can be received by the infrared receiving tube (2), and D3 in the circuit sends out a signal. At this time, the pulsed infrared rays composed of T6 and T7 are sent to D1, and D1 receives high-frequency infrared rays. The signal is filtered by C2, and then coupled to T1 by C3, the amplified signal is coupled to the control stage of T2 by C4, T2 is turned on, D2 and the control stage of T2 form a voltage multiplier and wave reduction. So the base potential of T3 drops, making its saturated power supply to the sounding circuit through the emitter and collector of T3. The sounder composed of T4 and T5 emits warning sounds intermittent...
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