Introduction for Special Issue on Vital Sign Monitoring Techniques

Abstract

　Vital sign monitoring play an important role to detect critical change of the patient or to give useful trend data for daily health care. The techniques are originally developed for clinical use. However, low cost, low power consumption implementations of the circuits and sensors allow to apply them to consumer use service such like smartphone, smartwatch, etc. In this field, power supply technique is also important for usability of the system. In this special issue, vital sign monitoring techniques for clinical use and for daily health care were introduced. A wireless electric energy transmission technique and a survey on energy harvesting technology for medical used are also introduced.