Monitoring device based on flexible force sensing element for quantitative pulse waves

A technology of sensing elements and monitoring devices, applied in the field of biomedical electronics, to achieve the effects of improving wearing comfort, avoiding damage, and reducing costs

Active Publication Date: 2017-06-30
巴龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a low-cost flexible quantitative pulse wave monitoring device, which solves the problem of non-invasive quantitative measurement of arterial pulse wave pressure on the body surface, and also has the characteristics of comfortable wearing and low cost

Method used

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  • Monitoring device based on flexible force sensing element for quantitative pulse waves
  • Monitoring device based on flexible force sensing element for quantitative pulse waves
  • Monitoring device based on flexible force sensing element for quantitative pulse waves

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The thin piece of flexible force-sensitive sensing element is embedded in the superficial surface of the wristband and the skin, and the embedded depth is not more than 0.1mm. The connection between the lead-out electrode and the microcontroller and the radio frequency tag chip is a flexible design (attached image 3 ), which is characterized in that the connecting wires are buried in the U-shaped channel of the wristband, the channel width is 0.8 mm to 1.5 mm, and the depth is 0.5 mm to 1 mm. Put it into the channel, the extended length of the connecting line is more than 2 times the length of the channel, the connecting line and the wristband are not glued, and can be stretched freely, ensuring that the wire and the contact with the end are complete when the wristband is stretched 100%.

[0042] The flexible force-sensitive sensing element sheet is a semiconductor-type carbon nanotube field effect structure. The load is sensed by measuring the change in the conductanc...

Embodiment 2

[0046] The structure of the wristband and the sensing element are the same as those in the first embodiment.

[0047] Multiple force-sensitive sensing elements are set on the same wristband, and the output signal of each sensing element is connected to the analog-to-digital conversion port of the microcontroller through the selection circuit in a time-sharing manner, and the data measured by each sensor is marked and stored in the microcontroller memory , after modulation, send the radio frequency tag chip, the radio frequency tag uses a 580MHz dedicated communication chip processor, the power supply is semi-active, and a rechargeable thin-film battery is integrated on the silicon-based chip. The maximum discharge capacity is greater than 50 milliampere hours. Power management module, the external card reader activates the power management circuit through the radio frequency tag, sends a read command to the radio frequency tag, activates the power management module and powers u...

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Abstract

The invention discloses a monitoring device based on a flexible force sensing element for quantitative pulse waves. A flexible force sensing diaphragm and antennas with flexible radio frequency tags are integrated in an elastomer wristband with constant pretension force. A measuring circuit, a microcontroller chip, a radio frequency communication chip and a power management circuit are prepared into a flexible electronics system by adopting a flexible printed circuit board. The flexible force sensing diaphragm of an elastomer matrix is set to a fixed range of the pretension force by an elastomer wristband with constant elongation rates. Signal processing makes voltage changes of the force sensing element sent to a reader-writer device in a radio frequency tag protocol. Signals of the quantitative constant pulse waves are obtained by comparing the voltage change value with a standard calibration load or a voltage curve. The reader-writer device makes the signals uploaded to a background support data device in a Bluetooth, WIFI way or internet data formats. Management software makes single or a plurality of flexible pulse wave sensing devices with the radio frequency tags achievable in signal reading and management, and the low-cost monitoring device for the quantitative constant pulse waves can be generated.

Description

technical field [0001] The invention belongs to the field of biomedical electronics and relates to a flexible and wearable quantitative pulse wave wireless sensor device. Background technique [0002] For a long time, clinical medicine and public health protection have continued to demand wearable human body basic physiological parameter monitoring devices. Based on various electronic technologies, a variety of human health information collection such as ECG, pulse, heart rate, body temperature, and blood oxygen saturation have been developed. , transmission, analysis, and storage of electronic equipment, these devices largely meet the needs of long-term continuous monitoring of basic information on human health in medical institutions and in home spaces. In recent years, basic research in the fields of soft materials science, organic electronics, and nanobiotechnology has developed rapidly, providing new technologies for monitoring basic physiological parameters of the huma...

Claims

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Application Information

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IPC IPC(8): A61B5/02A61B5/021
CPCA61B5/02A61B5/02108A61B5/681
Inventor 巴龙陈超刘杰
Owner 巴龙
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