MI Sensor Technology
Features of sensor：
MI sensor is a super high-sensitive magnetic sensor utilizing the magneto-impedance (MI) effect ofamorphous wire that Prof.
Mohri, Nagoya University et al. discovered in 1993.MI sensor captures the change of magnetic characteristics of the amorphous wire relative to the environment using the amorphous wire as a sensing part.
Principle of MI sensor：
Principle for detecting magnetic field
Magnetic series sensor head ：
- Measureable from DC to MHz with digital process only
- It does not require the magnetic shield while high resolution
- The system is compact and portable
- Room temperature operation is possible
Own product applying the magnetic series sensors：MAGGUARD
Preventing absorption accident of MR systems
To separate minute magnetic signals from noise with high accuracy, we developed and introduced the magnetic series sensor head of over-200 mm length,although it is difficult to sustain manufacturing accuracy of sensor heads.
Data density is one thousand times of Music CD data.
In spite of noisy environment, by fore Al functions MAGGUARD learns noise pattern so that it can prevent false positives.
How to use
Ⅰ. Detecting small magnetic materials at a distance of a few decimeters.
hairpin, ballpoint pen, lighter, stethoscope etc.
→used for screening of patients and doctors etc.
Ⅱ. Detecting magnetic materials within a few matters.
Gas cylinder, Cleaning tools, Wheelchair include magnetic materials etc.
→used for bringing prevention of magnetic materials by doctors or traders etc.
Preventing the occurrence of magnetic field in the body, EMC measures thoroughly deleting the influence to MR or other medical equipment etc.
Because MI magnetic series sensor head don’t generate a magnetic field, MAGGUARD don’t affect MR machines. A design for high Shielding performance and a body mainly made from aluminums,thoroughly decease a bad influence on MR machines.
Visualization of the detection position of ferromagnetic materials equipped with position display LED of ferromagnetic materials and a detection sound
By a single audible alarm and LED lights which color vary by the distance from the ferromagnetic materials,MAGGUARD makes medical staff aware of the position of ferromagnetic materials. So it is effective to locate the ferromagnetic material and save time, and can reduce the stress of hospital staff.
Space-saving installation, and easily can be moved
Although MAGGUARD is free-standing device, it don’t require a large area in which to be installed.And a safety design is considered for movement of people. A design regarding weight and shape is devised to allow a hospital staff to move MAGGURD to different locations.
Human Centered Design giving full consideration not only to patients getting MRI but also medical staffs
Application examples of MI magnetic series sensor head：
- Metal detector for security
- Current sensor with wide range
- Biological motion sensor
- Device for inspecting small metallic contaminations in food
- Device for inspecting Lithium-ion rechargeable batteries of electric vehicles
- Evaluation apparatus for cultured tissues
- Magneto cardiograph
- Magneto encephalograph
- Device for epilepsy diagnosis