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Infusion alarming system

An alarm system and output technology, applied in control/regulation systems, flow monitors, flow control, etc., can solve the problems of complex processing circuits, high costs, and no practical significance, and achieve the effect of avoiding liquid pollution

Active Publication Date: 2017-12-29
HUNAN SHUI KOU SHAN NONFERROUS METALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex processing circuit of the existing capacitive infusion alarm, or the need for programming, the cost is high and it is difficult to be practical
[0003] In addition, at present, almost all hospital wards above the second level are equipped with a call system, and the simple alarm has no practical significance. Therefore, it is necessary to realize automatic calling by connecting with the call system.

Method used

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Embodiment 1

[0020] Such as figure 1 Shown: an infusion alarm system, including batteries, sensing electrodes, touch integrated circuit U1, photocoupler U2 and resistor R1. Wherein, the working voltage of the battery is 3-5V, which can be a button battery of 3V or a lithium battery of 4.2V. The touch integrated circuit U1 is a single-key touch sensor chip TTP223. The specific connection relationship of each component is as follows:

[0021] The positive pole VCC of the battery is connected to one end of the power switch S1, and the other end of the power switch S1 is connected to pin 5 of the power input terminal of the touch integrated circuit U1. At the same time, the photocoupler U2 is also connected to pin 5 of the touch integrated circuit U1 through the resistor R1. The touch input terminal 3 of the touch integrated circuit U1 is connected to the sensing electrode, and the sensing electrode can be a thin metal sheet with an area of ​​not less than 0.3 cm² or a copper-clad PCB. A c...

Embodiment 2

[0026] Such as figure 2 Shown: an infusion alarm system, including sensing electrodes, batteries, touch integrated circuit U1, photocoupler U2, resistors R1 and R2, 2-bit dial switch S2, triode VT and buzzer Y. Wherein, the working voltage of the battery is 3-5V, which can be a button battery of 3V or a lithium battery of 4.2V. The touch integrated circuit U1 is a TTP223 chip. The transistor VT is a PNP transistor. Buzzer Y is an active buzzer. The specific connection relationship of each component is as follows:

[0027] After the first and second ends of the 2-digit DIP switch S2 are connected together, they are connected to the positive pole VCC of the battery; the first switch at the other end of the 2-digit DIP switch S2 is connected to the touch IC U1. 5 feet. The second switch of the 2-bit dial switch S2 is connected to pin 6 of the touch integrated circuit U1, and pin 6 is a mode selection terminal.

[0028] The anode of the primary infrared emitting tube of the...

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Abstract

An infusion alarming system comprises a sensing electrode, a touch integrated circuit and a photoelectric coupler, wherein the sensing electrode is tightly attached to an infusion tube; a touch inputting end of the touch integrated circuit is connected with the sensing electrode; a power inputting end of the touch integrated circuit is connected to direct-current voltage; an outputting end of the touch integrated circuit is connected to a primary infrared transmitting tube of the photoelectric coupler; the primary infrared transmitting tube is connected to the direct-current voltage by a resistor; and an outputting end of a secondary phototriode of the photoelectric coupler is connected with a calling switch of a calling system. On one hand, liquid information is acquired by the sensing electrode in a non-contact mode, and liquid contamination can be avoided; and on the other hand, a low-cost and practical infusion alarming circuit which uses the high-sensitivity touch integrated circuit as a core can be matched with the bedside calling system to fulfill an automatic calling function.

Description

technical field [0001] The invention relates to an alarm circuit, in particular to an infusion alarm system. Background technique [0002] The infusion alarm collects infusion information through sensors, such as the electrode method of direct contact, or the gravity method based on the change of liquid weight. However, the direct contact electrode method has the disadvantages of easily causing liquid contamination and increasing the risk of nosocomial infection, so it cannot be used for medical infusion alarm detection; and the gravity method is also difficult to be practical due to the different weights of different packages. Capacitive sensors and photoelectric sensors are now widely used to collect information on the presence or absence of liquids. Photoelectric sensors have cost advantages, but it is difficult to have finished sensors that can be used directly. Most of them need to adjust the relative position of the transmitting tube and receiving tube to achieve prac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/168G08B3/10
CPCA61M5/1684A61M2205/18A61M2205/3386G08B3/10
Inventor 王学文周奉娟
Owner HUNAN SHUI KOU SHAN NONFERROUS METALS GRP
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