18264304. MAGNETIC SENSOR simplified abstract (TDK Corporation)

MAGNETIC SENSOR

Organization Name

TDK Corporation

Inventor(s)

Shuichi Okawa of Tokyo (JP)

MAGNETIC SENSOR - A simplified explanation of the abstract

This abstract first appeared for US patent application 18264304 titled 'MAGNETIC SENSOR

Simplified Explanation

The magnetic sensor described in the abstract consists of a sensor chip with magnetic layers, a magnetic sensing element, an external magnetic member, and a measuring current coil. The sensor chip integrates the magnetic sensing element and magnetic layers, allowing for a very small magnetic gap and high sensitivity in detecting magnetic fields.

• Sensor chip with magnetic layers and sensing element:

 - The sensor chip contains magnetic layers that are magnetically coupled through a magnetic gap.
 - A magnetic sensing element is placed on a magnetic path formed by the magnetic gap.

• External magnetic member and measuring current coil:

 - An external magnetic member is magnetically coupled to one of the magnetic layers.
 - A measuring current coil is wound around the external magnetic member, through which a current flows to generate a magnetic field to be measured.

• High sensitivity and detection:

 - The integration of the magnetic sensing element and magnetic layers allows for a small magnetic gap and increased sensitivity in detecting weak magnetic fields.
 - Even with a weak current flowing in the measuring current coil, the generated magnetic field can be detected with high sensitivity.

Potential Applications

The technology can be applied in various fields such as automotive, consumer electronics, industrial automation, and medical devices for precise magnetic field detection and measurement.

Problems Solved

This technology solves the problem of detecting weak magnetic fields with high sensitivity, allowing for accurate measurements in various applications.

Benefits

The benefits of this technology include increased sensitivity in detecting magnetic fields, precise measurements, and the ability to design a very small magnetic gap for improved performance.

Potential Commercial Applications

The technology can be used in magnetic field sensors for automotive applications, magnetic encoders for industrial automation, magnetic resonance imaging (MRI) machines in the medical field, and magnetic compasses in consumer electronics.

Possible Prior Art

One possible prior art could be the use of Hall effect sensors for magnetic field detection, which may not offer the same level of sensitivity and precision as the integrated magnetic sensor described in the patent application.

How does this technology compare to other magnetic sensors on the market?

The article does not provide a direct comparison with other magnetic sensors in terms of sensitivity, accuracy, cost, or size.

Are there any limitations or drawbacks to this technology?

The article does not mention any potential limitations or drawbacks of the integrated magnetic sensor technology, such as environmental sensitivity, power consumption, or compatibility with different materials.

Original Abstract Submitted

A magnetic sensor includes: a sensor chip having magnetic layers magnetically coupled to each other through a magnetic gap and a magnetic sensing element disposed on a magnetic path formed by the magnetic gap; an external magnetic member magnetically coupled to one of the magnetic layer ; and a measuring current coil wound around the external magnetic member and through which a current for generating a magnetic field to be measured flows. The magnetic sensing element and the magnetic layers are thus integrated in the sensor chip, so that the magnetic gap can be designed to be very small in width, and a leakage magnetic field can be applied in large amounts to the magnetic sensing element. Thus, even when the current I flowing in the measuring current coil is weak, a magnetic field generated by the current I can be detected with high sensitivity.