Wireless finger-clipped type oximetry based on BLE Bluetooth technology
A finger-clip type and oximeter technology, applied in the field of biomedical signal detection, can solve the problems of cumbersome wiring and maintenance work in hospitals, restrictions on the freedom of movement of patients, etc.
Inactive Publication Date: 2018-09-07
镇江美利通医疗电子有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to transmit measurement data in a wired way in the traditional blood oxygen saturation detection, which not only restricts the freedom of movement of the pa
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[0014] In order to make the technical route, creative features, objectives and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0015] see figure 1 , figure 1 It is a functional block diagram of the present invention. The wireless finger clip oximeter based on BLE Bluetooth technology uses the CC2541 chip as the MCU. The design of the present invention is mainly composed of a light source driving circuit, a photoelectric receiving circuit, a filtering and amplifying circuit, and a CC2541 transceiver module. The low-power CC2541 module is used to realize 12-bit ADC conversion of the collected red light and infrared light signals, and reliable wireless transmission is performed through the IEEE standard BLE Bluetooth 4.0 wireless radio frequency transceiver module; the application of fuzzy entropy filtering eliminates signal noise; The fitting method removes the baseline dr...
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In order to solve problems of conventional blood oxygen saturation detection that data measurement is transmitted in a wired mode and a blood oxygen saturation finger-clipped probe needs to be constantly connected to a clinical monitor, resulting in immobile status of a patient and troublesome operation and maintenance in a hospital, the invention provides a wireless finger-clipped type oximetry based on a BLE Bluetooth technology, wherein a CC2541 chip serves as an MCU. The system (oximetry) is mainly composed of a light source driving circuit, a photoelectric receiving circuit, a filter andamplifying circuit and a CC2541 transmitting/receiving module. 12-bit ADC conversion is conducted on acquired red light and infrared light signals via a low-power-consumption CC2541 module, and reliable wireless transmission is implemented via a BLE Bluetooth 4.0 wireless radio transmitting/receiving module which conforms to an IEEE standard; signal noise is eliminated via fuzzy entropy filtering;baseline drift is removed via a linear fitting method; and finally, characteristic identification is carried out via a deep learning approach, so that an accurate blood oxygen saturation value and anaccurate pulse value are calculated out, and by connecting a mobile phone via Bluetooth, the blood oxygen saturation value and real-time pulse data can be remotely read via mobile phone APP.
Description
technical field [0001] The invention relates to a biomedical signal detection technology, in particular to a wireless finger clip oximeter based on BLE Bluetooth technology. Background technique [0002] Blood oxygen saturation measurement has been widely used in the field of clinical monitoring measurement. At present, blood oxygen saturation detection probes used in the market include finger clip blood oxygen probes, soft finger cuff blood oxygen probes, and bandage blood oxygen probes. The measurement of non-invasive arterial blood oxygen saturation is based on oxygenation in blood Hemoglobin (HbO2) and hemoglobin (Hb) have different absorption characteristics of light. Red light and infrared light of two different wavelengths are used to pass through the tissue and then converted into electrical signals by the photoreceptor. The absorption signals of other components, such as: skin, bones, muscles, venous blood, etc. are constant, while only the absorption signals of Hb...
Claims
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Login to View More IPC IPC(8): A61B5/0205A61B5/02A61B5/1455
CPCA61B5/0205A61B5/0015A61B5/0022A61B5/02A61B5/1455A61B5/14551A61B5/6826A61B5/6838A61B5/72
Inventor 孔东晴沈继锋
Owner 镇江美利通医疗电子有限公司