Abstract
We proposed ten requisite conditions for successful development of wearable I-o-T smart magnetic sensors considering recent development of some successful micromagnetic sensors. We reported application topics using the amorphous wire CMOS IC magnetoimpedance micromagnetic sensor (MI sensor) on the geomagnetic field sensor for the electronic compass installed in the smartphones, the pitching ball self-spin analyzer installed in the professional baseball, self-driving magnetic guidance system, and the biomagnetic field sensing. Performances of the MI sensor overcoming the ten requisite conditions are discussed as a smart micromagnetic sensor on the basis of the magnetoimpedance effect in the amorphous wire.
Highlights
One of the most important target concepts of the sensors for the I-o-T smart society is so-called “Wearable,” in that the sensors must operate compensating the biosensory ability for the information tablet holder such as the direction sensing in unfamiliar places matching with the human personal daily behavior
The electronic compass serves as the pedestrian navigation system in the smartphones and other mobile phones cooperated with the global positioning system (GPS)
The I-o-T smart society is a target for the creation of a sustainable security society in that citizens anytime utilize various wearable sensors compensating their biosensory ability for avoidance of various dangers or inconveniences
Summary
One of the most important target concepts of the sensors for the I-o-T smart society is so-called “Wearable,” in that the sensors must operate compensating the biosensory ability for the information tablet holder such as the direction sensing in unfamiliar places matching with the human personal daily behavior. The smart magnetic sensors must completely recover to the original operating point even when the sensor happened to be exposed to a strong magnetic field generated from a strong magnet (the magnetic shock). We should recognize that requisite conditions for the wearable I-o-T smart sensors are quite different from that for conventional sensors mainly operated by trained engineers at special indoor places. Cooperation of the high-performance magnetic sensor device (hard ware) and the signal processing computer (soft wear) is important for creation of the smart system
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