Wireless blood oxygen saturation detection system based on BLE Bluetooth technology
A detection system and saturation technology, applied in the field of biomedical signal detection technology, 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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[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 patient, but also brings practical problems such as cumbersome wiring and maintenance work to the hospital. The present invention provides a Wireless Blood Oxygen Saturation Detection System Based on BLE Bluetooth 4.0 Technology
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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 system principle block diagram of the present invention. The blood oxygen saturation detection system based on BLE Bluetooth 4.0 wireless technology uses the CC2541 chip as the MCU. The system is mainly composed of a light source drive circuit, a photoelectric receiving circuit, a filter and amplifying circuit, a CC2541 transceiver module, and a PC module. Through CC2541, the collected red light and infrared light signals are transmitted to the PC. The low-power CC2541 transmitting and receiving module is used to realize 12-bit ADC conversion, reliable wireless transmission is performed through the BLE Bluetooth 4.0 wireless radio transceiver module that conforms to the IEEE standard, and fuzzy entropy filte...
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The invention provides a wireless blood oxygen saturation detection system aiming at the situation that traditional blood oxygen saturation detection adopts a wired mode to transmit measured data, forexample, a blood oxygen saturation finger clamp probe must be connected to a clinical monitor all the time, and consequently, patients are inconvenient in action, and hospital operation maintenance is also troublesome. The blood oxygen saturation detection system based on a BLE Bluetooth 4.0 wireless technology takes a CC2541 chip as a MCU. The wireless blood oxygen saturation detection system ismainly composed of a light source driving circuit, a photoelectric receiving circuit, a filtering and amplifying circuit, a CC2541 transceiving module and a PC machine module. Collected red light andinfrared light signals are transmitted to a PC machine through a transceiving port of the CC2541 in a wireless mode. 12-bit ADC conversion is achieved by adopting the low-power-consumption CC2541 module, wireless transmission is conducted through a BLE Bluetooth 4.0 wireless radio frequency transceiving module, and various noise is eliminated by applying fuzzy entropy filtering; baseline drift isremoved through a linear fit method; and finally, feature recognition is conducted through a deep learning method, and the blood oxygen saturation value is accurately calculated.
Description
technical field [0001] The invention relates to a biomedical signal detection technology, in particular to a detection system based on a BLE wireless network. 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 HbO2 and Hb in ar...
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Login to View More IPC IPC(8): A61B5/1455
CPCA61B5/14551A61B5/6826A61B5/7203A61B5/7225
Inventor 孔东晴沈继锋吉祥
Owner 镇江美利通医疗电子有限公司