本文關鍵詞： 生豬 PPG原理 心率監(jiān)測 運動干擾 CC　出處：《南方農(nóng)業(yè)學報》2017年07期 　論文類型：期刊論文

【摘要】：【目的】研制一款基于光電容積脈搏波(Photoplethysmographic,PPG)原理的生豬心率測量耳標,實現(xiàn)生豬心率的在線監(jiān)測�！痉椒ā恳罁�(jù)PPG原理,采用So C芯片CC2541、光電式心率傳感器、MPU6050等研制一款基于CC2541藍牙4.0的生豬心率測量耳標,分析生豬心率信號的運動干擾來源,同時采集人體模擬生豬運動下的心率信號,導入MATLAB軟件,以快速傅里葉變換(Fast Fourier transform,FFT)處理分析PPG信號、運動信號的頻域特征及低頻采樣對心率數(shù)據(jù)提取結果的影響,并將FFT移植到CC2541中直接提取心率數(shù)據(jù)。【結果】豬耳與傳感器間的相對運動是生豬心率信號干擾的主要因素。當豬耳與心率傳感器間的夾持壓力在0.6~1.5 N時,傳感器能輸出完整的PPG信號波形,在生豬安靜狀態(tài)下能準確獲取心率數(shù)據(jù),在生豬運動狀態(tài)下通過FFT算法也可有效提取心率數(shù)據(jù)。在CC2541的RAM容量限制下,采樣數(shù)為128點,能滿足FFT算法提取心率數(shù)據(jù)。通過CC2541中FFT處理得到的心跳頻率為2.813 Hz,生豬心率=2.813 Hz×60 s=168.78次/min,生豬安靜狀態(tài)下人工測量的心率為160.00次/min,二者基本相符�！窘Y論】基于CC2541藍牙4.0的生豬心率測量耳標具有體積小、抗運動干擾強、功耗低的特點,適合對生豬進行長期動態(tài)的心率監(jiān)測,為開展生豬健康預警、動物福利、行為建模等研究提供一種新手段。
[Abstract]:[objective] to develop an ear label for heart rate measurement in live pigs based on the principle of photovolumic pulse wave photoplethysmography. [methods] based on the principle of PPG, the heart rate of live pigs was monitored on line. Using so C chip CC2541 and optoelectronic heart rate sensor MPU6050, a pig heart rate measuring ear label based on CC2541 Bluetooth 4.0 was developed to analyze the source of motion interference of the heart rate signal of live pig, and to collect the heart rate signal of human simulated live pig movement at the same time. In this paper, the MATLAB software is introduced, and the fast Fourier transform FFTs are used to process and analyze the PPG signals. The frequency domain characteristics of the motion signals and the influence of the low frequency sampling on the heart rate data extraction results are analyzed. FFT was transplanted into CC2541 to extract heart rate data directly. [results] the relative movement between pig ear and sensor was the main factor of interference of pig heart rate signal. When the clamping pressure between pig ear and heart rate sensor was 0.61.5N, The sensor can output the complete PPG signal waveform, obtain the heart rate data accurately in the live pig quiet state, and extract the heart rate data effectively through the FFT algorithm in the live pig movement state. Under the limit of the RAM capacity of CC2541, the sampling number is 128 points. The heart rate obtained by FFT processing in CC2541 is 2.813 Hz, the heart rate of live pig is 2.813 Hz 脳 60 sm 168.78 beats / min, and the heart rate of live pig is 160.00 beats / min in quiet state. [conclusion] based on CC2541, the heart rate is basically consistent. Bluetooth 4.0 's live pig heart rate measurement ear label has a small volume, It is suitable for long-term dynamic heart rate monitoring of live pigs, which provides a new method for the research of pig health warning, animal welfare, behavior modeling and so on.
【作者單位】： 江西省農(nóng)業(yè)科學院農(nóng)業(yè)經(jīng)濟與信息研究所;江西省農(nóng)業(yè)科學院;
【基金】：江西省科技支撐計劃項目(20141BBF60058)
【分類號】：S828
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本文編號：1552631