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Blood pressure and heart rate measuring system based on flexible stress sensor and preparation method thereof

A stress sensor, blood pressure and heart rate technology, applied in the measurement of the property force of the piezoelectric resistance material, fluid pressure measurement by changing the ohmic resistance, cardiac catheterization, etc., can solve the problems of high cost, time-consuming and laborious, etc., and achieve good resistance sexual effect

Inactive Publication Date: 2019-07-19
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is time-consuming and laborious and can only be done in regular hospitals. For the general public, the cost is relatively high

Method used

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  • Blood pressure and heart rate measuring system based on flexible stress sensor and preparation method thereof
  • Blood pressure and heart rate measuring system based on flexible stress sensor and preparation method thereof
  • Blood pressure and heart rate measuring system based on flexible stress sensor and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]The invention is a portable wearable heart rate and blood pressure measuring device based on a flexible stress sensor. The flexible stress sensor is a high-sensitivity and stretchable stress sensor film, which is made by filling Ag@CNTs composite nanomaterials on the PDMS substrate through chemical synthesis, so that the film has electrical properties - piezoresistive effect. The function of the hardware circuit is mainly to collect the electrical signal returned from the flexible stress sensor, store it, process it and display it. At the same time, it also has a timing function, which can control the timing of collecting heart rate and blood pressure values, and transmit the collected data to the host computer through wireless transmission mode for data summary, providing reference for doctor diagnosis.

[0048] 1. If figure 2 As shown, the blood pressure and heart rate measurement system based on the flexible stress sensor includes a strap-shaped ring body 3, a circu...

Embodiment 2

[0095] The preparation method of the blood pressure and heart rate measurement system based on the flexible stress sensor comprises the following steps:

[0096] S1. Preparation of Ag@CNTs-PDMS flexible stress sensor:

[0097] S1.1, configuration of PDMS colloid

[0098] In the experiment, the PDMS material is Dow Corning SYLGARD184. Take 12g of prepolymer glue and 1.2g of curing agent. Mix the two evenly in a clean beaker to make a uniform colloid;

[0099] Put the homogeneous colloid into a drying oven, remove air bubbles, and cure it at 80°C for 1 hour, take it out and cut it into long strips, and make PDMS thin slices, which are PDMS films, for later use;

[0100] S1.2. Preparation of Ag@CNTs composite nanomaterials

[0101] S1.2.1: Prepare 0.05mol / L silver nitrate aqueous solution:

[0102] Take 3.4g of silver nitrate in two clean beakers, and then add 40ml of deionized water to prepare 0.05mol / L silver nitrate solutions.

[0103] S1.2.2: Prepare a sodium citrate solu...

Embodiment 3

[0112] 4. The preparation method of the blood pressure and heart rate measurement system based on the flexible stress sensor, comprising the following steps:

[0113] S1. Preparation of Ag@CNTs-PDMS flexible stress sensor:

[0114] S1.1, configuration of PDMS colloid

[0115] In the experiment, the PDMS material is Dow Corning SYLGARD184. Take 12g of prepolymer glue and 1.2g of curing agent. Mix the two evenly in a clean beaker to make a uniform colloid;

[0116] Put the homogeneous colloid into a drying oven, remove air bubbles, and cure it at 80°C for 1 hour, take it out and cut it into long strips, and make PDMS thin slices, which are PDMS films, for later use;

[0117] S1.2. Preparation of Ag@CNTs composite nanomaterials

[0118] S1.2.1: Prepare 0.05mol / L silver nitrate aqueous solution:

[0119] Take 3.4g of silver nitrate in two clean beakers, and then add 40ml of deionized water to prepare 0.05mol / L silver nitrate solutions.

[0120] S1.2.2: Prepare a sodium citrate...

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Abstract

The invention discloses a heart rate and blood pressure measuring system based on a flexible stress sensor and a preparation method thereof. The flexible stress sensor is a high-sensitivity stretchable stress sensor film, and the manufacturing method is as follows: filling a PDMS substrate with an Ag@CNTs composite nano material through chemical synthesis, so that the film has an electrical property-piezoresistive effect. The function of a hardware circuit is mainly to collect the electric signals returned from the flexible stress sensor, and to process and display the electric signals. Meanwhile, the system also has a timing function, can control the timing acquisition of heart rate and blood pressure values, transmits the acquired data to an upper computer for data collection through a wireless transmission mode, and provides a reference for doctor diagnosis.

Description

technical field [0001] The invention discloses a blood pressure and heart rate measurement system based on a flexible stress sensor and a preparation method thereof, belonging to the technical field of sensor measurement and signal processing. Background technique [0002] The portable heart rate and blood pressure measuring device has the functions of intelligence, high precision and high integration. The measurement of heart rate and blood pressure can not only guide people's healthy life, but also provide reference for doctors' diagnosis. With the development of emerging industries such as big data and the Internet of Things, medical electronic equipment can record, upload and synchronize data to facilitate people's lives, which is a development direction for future medical testing. [0003] Heart rate and blood pressure are one of the indicators that directly reflect the health status of the human body, and are often an important part of the physical examination. Heart...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/022G01L1/18G01L9/06
CPCA61B5/022G01L1/18G01L9/06
Inventor 桑胜波张成然裴臻张强张博张益霞郝润芳张虎林
Owner TAIYUAN UNIV OF TECH
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