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【芯片方案设计】脉搏血氧仪
2022-07-06 17:36:00 【西城微科方案开发】
血氧仪芯片方案使用MCU主控芯片结合红光传感器,以还原血红蛋白(Hb)、氧合血红蛋白(HbO2)在红光和近红外光区域的吸收光谱特性为理论依据,进行血氧含量和心率测量,并将所测结果显示在显示屏上。血氧含量精度可达±1%,心率精度可达±1bpm或±1取大值。测量时只要将手指插入,显示屏就会直接显示所测血氧饱和度值,具有较高的准确性和重复性。
血氧仪主要器件和原理介绍:
MCU
存储器(EPROM与RAM)
两个控制LED的数模转换器
对光电二极管接收的信号进行滤波与放大的器件
将接收信号数字化以提供给微处理器的模数转换器
小型液晶显示
指夹血氧仪芯片方案规格参数
◆显示屏类型:OLED蓝黄双色显示屏
◆血氧饱和度
测量范围:70%~100%
精度:士1%
◆心率
测量范围:25BPM~250BPM
精度:士1BPM
◆血流灌注指数:≥0.3%,士0.1%
◆显示屏类型:OLED显示屏
◆手动调整界面方向:6种显示模式,4种显示方向
◆LED显示:同时显示测试值和条形图
◆低电池电压指示灯
◆自动待机或睡眠(自动休眠时间约12秒)
◆血氧饱和度
◆报警
基本参数报警:低饱和度报警,高(低)脉搏率报警
传感器状态报警:传感器自动脱落报警
系统故障报警:脱落报警,电池电量不足报警:电压低于2.4V(可按实际产品情况的进行修改)
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