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Development of a four-channel cardiovascular signals collector based on STM32 with digital-controlled gain
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作者 Longcong Chen Ruiying Zhang +2 位作者 Gaiqin Liu Bin Gao Guohu Hu 《Journal of Biomedical Science and Engineering》 2013年第4期449-452,共4页
To get better methods on diagnosis of cardiovascular diseases and health assessment by comparison analysis of four kinds of cardiovascular signals, which are blood pressure signal (BPS), plus wave signal (PWS), electr... To get better methods on diagnosis of cardiovascular diseases and health assessment by comparison analysis of four kinds of cardiovascular signals, which are blood pressure signal (BPS), plus wave signal (PWS), electrocardiosignal (ECS) and cardiac sound signal (CSS), a four-channel signals collector is introduced in this article. This collector is composed of microcomputer STM32F103RB with integrated 12-bit analog to digital converters (ADCs) and some integrated chips (IC) such as PGA113, a programmable gain amplifier with internal calibration channels for system-level calibration. Therefore, the data of four kinds of cardiovascular signals can be both collected by this signal collector with a high precision and output to a computer by universal serial bus (USB) interface, which can also offers power for this instrument. In addition, the gain of input signal can be changed by computer software through USB interface under microchip commands. Thus it has many merits, such as the small volume, low cost, high performance and precision, digital-controlled gain and so on. Consequently, it is convenient to acquire the data of four kinds of cardiovascular signals by it, and a waveform of one sample is shown. 展开更多
关键词 CARDIOVASCULAR SIGNAL SIGNAL collector Digi-tal-Controlled STM32F103RB PGA113
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栾川钼矿高效选矿试验研究 被引量:11
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作者 曹占芳 钟宏 +3 位作者 姜涛 王帅 刘广义 夏柳荫 《稀有金属与硬质合金》 CAS CSCD 北大核心 2012年第1期1-4,共4页
对栾川钼矿进行了浮选试验研究。以水玻璃为抑制剂、MBF-103为捕收剂,一粗两扫一精闭路浮选试验得到的精矿钼品位和回收率分别为5.304 0%和92.24%,较采用常规捕收剂煤油时明显提高。
关键词 辉钼矿 浮选 捕收剂 mbf-103
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分步优先浮选钼试验研究 被引量:4
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作者 朱圣林 《现代矿业》 CAS 2011年第3期28-31,71,共5页
德兴铜矿泗洲选矿厂目前的浮选工艺为铜硫混合浮选,钼在选铜精选段受石灰的影响损失很大,钼回收率一直在50%左右。研究通过引入"选铜前优先选钼"新工艺,并应用新型高效钼捕收剂MBF-103,成功实现一段磨矿条件下钼的优先浮选,... 德兴铜矿泗洲选矿厂目前的浮选工艺为铜硫混合浮选,钼在选铜精选段受石灰的影响损失很大,钼回收率一直在50%左右。研究通过引入"选铜前优先选钼"新工艺,并应用新型高效钼捕收剂MBF-103,成功实现一段磨矿条件下钼的优先浮选,大大提高了钼的回收率。 展开更多
关键词 分步浮选 mbf-103捕收剂 钼回收率
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