Coursera Specialization on Embedding Sensors and Motors ESM_C4M3V4 Sensor Solutions for Medical Applications [2] [1] • Pressure, temperature, flow and acceleration sensors are used in implantable devices, patient monitors, and surgical equipment Pressure Sensor in an Oxygen Concentrator Zeolite pellets absorb N2 Allows O2 gas to flow to tank [3] Invacare Platinum Mobile Portable Oxygen Concentrator [4] Blood Pressure Monitor for Repair of Aortic Aneurysm [7] • Silicon Microstructures SMI-1A digital pressure sensor with wire can also be placed in the artery • Size: 750 μm × 220 μm × [6] 75 μm Pressure wire is inserted into • Drift: <1 mmHg/hour artery to wirelessly monitor drift in 37°C saline blood pressure during surgery [5] [7] [8] Digital control input Semiconductor Temperature Sensors [10] Current source Base emitter junction Single vs. two-point calibration of LMT70 Amplifier Output 2 2 Simplified block diagram of LMT70 semiconductor thermal IC [9] Accuracy of LMT70 over temperature, package size is only 0.9 mm square In order to solve for coefficients a and b in the curve for Vtyp(T), you need to do a quadratic regression, a more complex calculation than a linear regression [11] Wearable Temperature IC With Thermal Isolation [12] TMP 117M sensor, 0.1°C accuracy [13] [14] Flex PCB with strong adhesive backing attaches sensor to the skin Low Flow Sensors in Respirators and Drug Infusion [15] Sensirion SFM3000 Mass Flow Sensor [16] Anesthesia machine [17] [18] Sensirion LD20 Liquid Flow Sensor Infusion pump Citations [1] www.te.com [2] www.libelium.com [3] www.invacare.com [4] www.allsensors.com [5] www.nejm.org [6] www.cardiovascular.abbott/us/en [7] www.si-micro.com [8][9][10][11][12][13][14] www.ti.com [15][17] www.sensirion.com [16][18] www.wikipedia.org ESM_C4M3V4 ESM_C4M3V4 ESM_C4M3V4
