This sensitive and reliable door sensor can be powered from a 9V alkaline battery pack. At the heart of the circuit is one Unipolar Hall effect sensor MH183 (HS1). It incorporates advanced chopper ...

Overview This project implements a simple security system to detect whether a door or window is open or closed using a Magnetic Reed Switch and an STM32F0 microcontroller. When the door or window is ...

The sensor part is essentially a reed switch encased in a plastic shell. Normally the reed switch is in open state but when the magnet part comes close to the sensor part, the reed switch closes ...

A door magnetic sensor is a security device used to detect the opening and closing of doors and windows. It typically consists of two components: a magnet and a sensor. When the door is closed, the ...

Imperceptible magnetic sensor matrix system integrated with organic driver and amplifier circuits. Science Advances, 2020; 6 (4): eaay6094 DOI: 10.1126/sciadv.aay6094 ...

Firstly, we review bio-magnetic fields and the principle of GMI effect. Then we carried out off-diagonal GMI effect measurement experiment to obtain the circuit design requirement. Form the experiment ...

The magnetic field distribution of magnetostrictive composites of magnetic circuits significantly affects the measurement range of magnetostrictive current sensors. A novel technique to extend the ...