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Flexible capacitive pressure sensor and respiration monitor using same

一种压力传感器、电容性的技术，应用在监视身体运动和呼吸的系统领域，达到灵敏度提高、提高灵敏度的效果

Inactive Publication Date: 2018-05-11
2BORIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, at no stage during use of the sensor is there any ability to interlock or otherwise engage opposing protrusions of the two surfaces

Method used

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  • Flexible capacitive pressure sensor and respiration monitor using same
  • Flexible capacitive pressure sensor and respiration monitor using same
  • Flexible capacitive pressure sensor and respiration monitor using same

Examples

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Embodiment Construction

[0050] In the following description of some embodiments, identical components that appear in more than one figure or that share similar functionality will be referenced with the same numerals.

[0051] Figure 1 illustrates a sleep monitor comprising a flexible capacitive pressure sensor 1 placed between and compressed by the human body and a generally both deformable and non-planar support . The sensor 1 comprises at least one sensing unit 2, each sensing unit 2 responding to local compression by increasing its capacitance. The sensing unit 2 is connected to a suitable transducer 3, which converts the change in capacitance into a corresponding signal. This signal is typically a variable frequency signal whose frequency is a function of capacitance and is processed by data processing circuitry 4 to provide a measure of capacitance or a function thereof. Typically, the data processing circuit 4 samples and averages the signal and provides desired variables related to the tempo...

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Abstract

A capacitive pressure sensor includes first and second of mutually displaceable elastic members (100, 150) each having a respective electrically conductive surface separated by a thin elastic dielectric. Variations in area of pressure-induced contact between the first and second members are used to vary capacitance of the sensor that allows determination of differential pressure between the two elastic members. Both of the elastic members have respective projections, the projections of the first elastic member being disposed in interlocking relationship with the projections of the second elastic member and configured so that as the elastic members are pressed toward each other their respective projections progressively engage and create increasing areas of contact.

Description

technical field [0001] The present invention relates generally to converting pressure to capacitance using flexible sensors, and in particular to systems and methods for monitoring body movement and respiration using such sensors. Background technique [0002] The rapid development of healthcare technology has increased the need to monitor breathing via the body's pressure on appliances such as mattresses (during sleep), chairs and sofas without wearing sensors. Some applications require that the respiration signal be both DC and relatively noise-free of sufficiently high quality to enable real-time detection during the expiratory phase (eg, exhalation) and the onset of breath-hold. Such applications may include, for example, exhalation pattern modification using guided tones as applied by a device called RESPeRATE for inducing relaxation and treating hypertension. This device is described in US Patent No. 5,800,337. For such applications, the sensor should be thin enough ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/14A61B5/08
CPCA61B5/0816G01L1/146A61B2562/0233A61B5/1126A61B5/1135A61B2562/0247
Inventor B·加威什
Owner 2BORIS TECH CO LTD
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