Detection terminal for degree of blood oxygen saturation

A technology for detecting terminal and saturation, which is applied in the field of blood oxygen saturation detection terminal, can solve problems such as single form, easy to be interfered by other signals, complicated detection process of blood oxygen saturation, etc. simple effect

Inactive Publication Date: 2015-11-18
CHENGDU HANKANG INFORMATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing blood oxygen saturation detection process is complicated, and it is easily interfered by other signals during the measurement process, and the final result is presented in a single form, which is not conducive to the use of different types of people

Method used

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  • Detection terminal for degree of blood oxygen saturation

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Experimental program
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Effect test

Embodiment 1

[0015] like figure 1 As shown, the present invention includes a microprocessor, a D / A converter, an A / D converter, an LED drive circuit and a photoelectric sensor, and the microprocessor is simultaneously connected to the D / A converter, the A / D converter, and the voice broadcast. The D / A converter is also connected to the LED drive circuit, the photoelectric sensor, the amplifier, the filter, the signal conditioning circuit, the voltage-current conversion circuit and the integrating circuit in sequence, and the integrating circuit is also connected to the A / D converter. When in use, the microprocessor generates driving signals of red light with a wavelength of 660nm and infrared light with a wavelength of 940nm in time-sharing, and transmits the signals to the LED driving circuit after D / A conversion. The LED drive circuit amplifies the power of this signal, and then sends it to the red light and infrared light emitting diodes placed in parallel on the upper arm of the photoel...

Embodiment 2

[0017] This embodiment is preferably as follows on the basis of Embodiment 1: the photoelectric sensor is a finger-sleeve photoelectric sensor. The photoelectric sensor is convenient to be put on the human body and is not easy to slip off, which further ensures the accuracy of measurement.

[0018] The signal conditioning circuit is a signal conditioning circuit capable of performing signal baseline level transformation and removing DC components. To further ensure the accuracy of the final measurement signal.

[0019] The microprocessor model is C8051F020. It is a fully integrated mixed-signal system-level MCU chip with 64 digital I / O pins or 32 digital I / O pins, which can fully meet the measurement needs.

[0020] The microprocessor is a microprocessor capable of generating red light and infrared light driving signals in time division. Photoelectric sensor is used because the absorption rate of oxyhemoglobin and reduced hemoglobin in blood to red light with wavelength of ...

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Abstract

The invention discloses a detection terminal for the degree of blood oxygen saturation. The detection terminal comprises a microprocessor, a D / A converter, an A / D converter, an LED drive circuit and a photoelectric sensor. The microprocessor is connected with the D / A converter, the A / D converter, a voice broadcasting device and a displayer. The D / A converter is further sequentially connected with the LED drive circuit, the photoelectric sensor, an amplifier, a filter, a signal conditioning circuit, a voltage and current converting circuit and an integral circuit, and the integral circuit is further connected with the A / D converter. By means of the theory, operation is simple, the detection process is not likely to be interfered by other signals, final measurement results can be broadcasted through voices or displayed by a display screen, the presentation forms are diversified, and the detection terminal can be used for people even having visual impairments.

Description

technical field [0001] The invention relates to the field of intensive care, in particular to a blood oxygen saturation detection terminal. Background technique [0002] Since the single-function monitoring equipment came out in the 1970s, it has gradually been widely used in clinical monitoring. However, due to the limitation of its monitoring function, the single-function monitoring equipment has been far from meeting the needs of clinical application, which seriously restricts the hospital's rescue of the vast number of critically ill patients. In the 1990s, with the development of sensing technology and electronic technology, the monitoring parameters continued to increase, from the single parameter monitoring in the past to the multi-parameter monitoring. For example, from a single ECG monitoring, blood pressure monitoring, and blood oxygen saturation monitoring, it has gradually developed into a monitoring system including ECG, respiration, blood pressure, blood oxyge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1455
Inventor 柴军陈静耿红珍
Owner CHENGDU HANKANG INFORMATION IND
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