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Novel pulse signal extracting circuit

A signal extraction and circuit technology, used in medical science, diagnosis, catheters, etc., to achieve the effect of convenient function expansion and suppression of interference

Pending Publication Date: 2018-05-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies in the existing pulse signal acquisition technology in the background technology, and provide a new type of pulse signal extraction circuit for the purpose of achieving high measurement accuracy, low distortion, and little influence by ambient temperature

Method used

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Embodiment 1

[0028] Embodiment 1 Overall structure of the present invention

[0029] The physical structure of the present invention is as figure 1 shown, the electrical connections are as figure 2 As shown, the structure of the present invention includes a single-chip microcomputer 1, a display screen module 2, a key input module 3, a Bluetooth communication module 4, a pressure sensor module 5, a waveform acquisition module 6, a high-fidelity signal conversion circuit 7, a noise suppression circuit 8, a modulus Converter 9, digital temperature sensor 10, wristband 11.

Embodiment 2

[0030] Embodiment 2 High-fidelity signal conversion circuit of the present invention

[0031] Such as Figure 4 As shown, the present invention adopts a high-fidelity signal conversion circuit after the waveform acquisition circuit, and the specific structure is that the inverting input terminal of the operational amplifier U1A is used as the input terminal of the high-fidelity signal conversion circuit 7, which is denoted as a port PSensor, connected to the waveform acquisition The common output terminal of the four-choice analog switch chip in module 6, the inverting input terminal and the output terminal of the operational amplifier U1A are connected to the resistor R1, the output terminal is connected to the non-inverting input terminal of the operational amplifier U1B, the inverting input terminal of the operational amplifier U1B and Resistor R2 is connected between the output ends, and the output end is used as the output end of the high-fidelity signal conversion circui...

Embodiment 3

[0033] Embodiment 3 Noise suppression circuit of the present invention

[0034] Such as Figure 5 As shown, the present invention also adds a noise suppression circuit before the analog-to-digital conversion. The specific structure is that the inverting input terminal of the operational amplifier U2B is connected to the output terminal, and the non-inverting input terminal is connected to one end of the resistor R8 and one end of the capacitor C1, and the capacitor The other end of C1 is grounded, the other end of resistor R8 is connected to one end of resistor R7 and one end of capacitor C2, and the other end of resistor R7 is used as the input end of noise suppression circuit 8, denoted as port RudePI, connected to the output of high-fidelity signal conversion circuit 7 end, the other end of capacitor C2 is connected to the output end of op amp U2B, the output end of op amp U2B is connected to one end of resistor R9, the other end of resistor R9 is connected to one end of ca...

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PUM

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Abstract

The invention discloses a novel pulse signal extracting circuit, and belongs to the technical field of electronic devices. The novel pulse signal extracting circuit structurally comprises a single-chip microcomputer (1), a display screen module (2), a key input module (3), a Bluetooth communication module (4), a pressure sensor module (5), a waveform collecting module (6), a high-fidelity signal converting circuit (7), a noise suppression circuit (8), an analog-digital converter (9), a digital temperature sensor (10) and a wristband (11). The novel pulse signal extracting circuit has the advantages of being high in measurement precision, strong in interference resistance and small in environment temperature influence; the measurement result can be conveniently checked through a cell phone,and a convenient expansion space is provided for remote medical treatment.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment, in particular to a novel pulse signal extraction circuit. Background technique [0002] With the rapid development of today's society, people's life and work pace are very fast, which makes people's life more and more stressful, and the body is easy to enter sub-health or disease state. In terms of health preservation, traditional Chinese medicine has many effective methods for the body in a sub-healthy state. Traditional Chinese medicine has a long history and is unique in the world. Pulse diagnosis is an important link in the "four diagnostics" of traditional Chinese medicine: looking, smelling, asking, and feeling. It is one of the essences of Chinese medicine and a manifestation of the basic principle of TCM diagnosis. Traditional Chinese medicine believes that when qi and blood in the viscera of the human body become diseased, the blood circulation will be affected and the pul...

Claims

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Application Information

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IPC IPC(8): A61B5/02
CPCA61B5/02A61B2560/0252
Inventor 高博霍佳雨田小建吴戈
Owner JILIN UNIV
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