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Front-end analog circuit for combined collection of electrocardio and pulse waves and front-end analog chip

A front-end analog and pulse wave technology, applied to DC-coupled DC amplifiers, amplifiers with semiconductor devices/discharge tubes, electrical components, etc., can solve problems such as complex structures and high power consumption

Inactive Publication Date: 2020-02-07
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of this application is to provide a front-end analog circuit and a front-end analog chip for joint acquisition of ECG and pulse wave signals, aiming to solve the problems of high power consumption and complex structure of existing ECG and pulse wave signal acquisition chips

Method used

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  • Front-end analog circuit for combined collection of electrocardio and pulse waves and front-end analog chip
  • Front-end analog circuit for combined collection of electrocardio and pulse waves and front-end analog chip
  • Front-end analog circuit for combined collection of electrocardio and pulse waves and front-end analog chip

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Embodiment Construction

[0038] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0039] In the description of the present application, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

[0040] The embodiment of the present application provides a front-end analog circuit for joint acquisition of ECG and pulse wave, figure 1 For a schematic structur...

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Abstract

The invention belongs to the technical field of physiological signal detection, and provides a front-end analog circuit by combined collection of electrocardio and pulse waves and a front-end analog chip. A signal input by a detection electrode is amplified through a transconductance instrument amplifier circuit; a current signal provided by a photosensitive diode is converted into a voltage signal through a transimpedance amplifier circuit; the voltage signal is amplified to output a corresponding first detection signal; then the switching state of a switch is controlled through a switching switch circuit, a same programmable gain amplifier circuit, a low-pass filter circuit and an output buffer circuit are adopted for processing the detection signals, and the problems that an existing electrocardio and pulse wave signal collecting chip is high in power consumption, complex in structure and the like are solved.

Description

technical field [0001] The application belongs to the technical field of physiological signal detection, and in particular relates to a front-end analog circuit and a front-end analog chip for joint acquisition of electrocardiogram and pulse wave. Background technique [0002] Electrocardiogram (ECG), blood oxygen (SPO2) and blood pressure are relatively common human physiological signals. Wearable devices are usually used to collect ECG and pulse wave (PPG) signals to calculate heart rate and blood oxygen. Saturation, while non-invasive continuous blood pressure can also be calculated. However, the existing ECG and pulse wave signal acquisition chips have problems such as high power consumption and complex structure, which greatly affect the application range of wearable devices. Contents of the invention [0003] The purpose of this application is to provide a front-end analog circuit and a front-end analog chip for joint acquisition of ECG and pulse wave signals, aimin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0402A61B5/0408A61B5/0428A61B5/0205A61B5/02A61B5/00H03F3/45H03G3/00A61B5/308
CPCA61B5/02A61B5/0205A61B5/0059A61B5/7225A61B5/7203H03F3/45071H03G3/00A61B5/319A61B5/304A61B5/30A61B5/282
Inventor 王怡珊安奇李烨
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI