Infusion alarm device

Abstract

The invention is an infusion alarm system centered on liquid level detection and a single-chip microcomputer, including a power supply module, a photoelectric sensor, a comparator, a single-chip microcomputer, an LED lamp, a sound alarm device and an executive mechanism. Among them, the liquid in the infusion tube is detected by a photoelectric sensor (photoelectric interrupter), and the infusion alarm system is controlled by a single-chip microcomputer. The device uses a photoelectric sensor to detect whether there is liquid in the infusion tube sensitively, quickly and accurately, and reduces the workload of escorts during infusion. Combined with the multi-task processing capability of the single-chip microcomputer, it can complete sound and light alarm, position display, address transmission and automatic clamping Infusion tube and other functions. The entire control system not only has low cost, less external interference, and sensitive liquid level detection, but also has the advantages of small size, easy installation and operation, and no need to remove drugs. It can be used in small-scale decentralized or large-scale centralized use in hospitals and other places where intravenous infusion is common.

Description

technical field [0001] The invention is an infusion alarm system with liquid level detection and a single chip microcomputer as the core, and specifically relates to the field of medical equipment. Background technique [0002] The existing infusion alarm device realizes the alarm function mainly through the following several methods. One is to use the spring to hang the infusion bottle to realize automatic alarm on the change of its weight; the other is to use the weak conductivity of the liquid to automatically detect the infusion situation; the other is to use the capacitive sensor to detect the liquid level in the infusion bottle. But there are some following deficiencies in present transfusion alarm device: [0003] a) Insufficiency of using springs to suspend infusion bottles to realize automatic alarms for changes in their weight: the springs will undergo elastic deformation when they are in a stretched state for a long time, and the sensitivity to weight changes wil...

AI Technical Summary

Problems solved by technology

[0003] a) Insufficiency of using springs to suspend infusion bottles to realize automatic alarms for changes in their weight: the springs will undergo elastic deformation when they are in a stretched state for a long time, and the sensitivity to weight changes will decrease; infusion bottles not only have different sizes, but also have For infusion bottles and infusion bags, the spring sensor alarm has certain limitations; while the weight of the infusion bottle changes slowly, the individual weight difference of the infusion bottle will cause false alarms

[0004] b) Use the weak conductivity of the liquid to automatically detect the insufficiency of the infusion: it is extremely inconvenient during use, and it is easy to cause the liquid to be infected with bacteria, and it is also extremely inconvenient to install, and it is easy to change the characteristics of the drug

[0005] c) Insufficiency of using capacitive sensors to detect the liquid level in the infusion bottle: it is inconvenient in terms of the simplicity of device installation; due to the wide range of infusion media and the different capacitance coefficients of each solution, capacitive sensors The scope of application of the test has certain limitations

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