Our sensing solution consists from 3 important parts.
MicroWire sensors by RVmagnetics are miniaturized (diameter ca. 3–70 µm)
magnetic contactless sensors of physical quantities (temperature, pressure,
pull, mechanical stress, torsion, magnetic field, position, etc.). MicroWires
are made of metallic alloy core (diameter ca. 1–50 µm) and glass coating
(thickness 2–20 µm). Their size, high added value, robustness, simple
production process and also their symmetry, glass-coating, possibility of
contactless sensing leads to their utilization as a miniaturized sensor with a
wide range of applications in different industries: IoT, Industry 4.0,
Structural Health Monitoring, Automotive, Aerospace, Smart materials,
Healthcare, Anticounterfeiting area, etc.
Sensing system – coils,
MicroWire sensors are magnetic. To sense them, we need to generate an AC
magnetic field (triangual or other) with excitation coil. Unless present in
noisy magnetic or electric fields, coil is powered with a few milliAmperes. The
magnetic response from the MicroWires (with high sensitivity to temperature,
pressure and position in the magnetic field), in terms of a magnetization
change, is sensed with another pick up/sensing coil.
Output from the sensing coil includes signals from magnetic and electric
noises present in the vicinity of the sensing coil during the measurements.
Signal obtained needs to be filtered out of noises and also amplified.*
Filtered and amplified signal is digitalised in MCU (ARM chip) and ready for
data post-processing in customer's preferred software.
* The signal can be obtained from a maximum distance up
We use ARM customized chip as a processing system. Coils are directly
connected to the electronics, while electronics digitalize the received
data, and through USB, or using Bluetooth / Wi-Fi / SigFox, … It can send the
digitalised data where you need them for further processing.
Digitalised data output from electronics is further processed and calibrated
using our tailor-made software for ARM chip. Calibrated values are transferred
for further post-processing to clients preferred peripheral or software.
To obtain local data – MicroWire (of length 1–4 cm) needs to be placed
on / in the material. As the sensing system needs to be placed in the proximity
of the MicroWire – within 10 cm range – measurements can be obtained even
through other materials (even metallic, magnetic materials).