• Existing magnetic sensors are layered structures using epoxy bonding are limited in their ability to sense magnetic fields only  within their own plane, and epoxy  properties degrade significantly at  temperatures beyond 50°C.

• The present patent application aims to address  these limitations by developing a reliable and  efficient magnetic sensor that eliminates the  issues associated with the traditional magneto-  strictive materials

• The present patent discloses magneto-electric  based magnetic sensor. This technology is a  press-fit magnetic sensor with a multi-  directional detection capability, designed for  reliable operation at elevated temperatures.
• It eliminates the use of epoxy bonding,  ensuring high-temperature stability, and  offers customization options for industrial use.

The present patent discloses methods of:

• Fabrication of Press-Fit Magnetic Sensor
• Detection of Magnetic Fields.

Fabrication of Press-Fit Magnetic Sensor:

• Sensor Structure Creation: Form a sensor structure with multiple faces using a magnetostrictive material, which can be  shaped into various forms like cuboids or  prisms.
• Slot Machining: Machine at least one slot in each face of the sensor structure to accommodate piezoelectric discs.
• Piezoelectric Disc Fitting: Fit at least one piezoelectric disc into each slot of the sensor structure to enable the detection of magnetic  fields from different directions.
• Optional Auxiliary Top Plate: Fabricate an auxiliary top plate from the same magnetostrictive material and attach it to the sensor structure to create an additional face  for enhanced sensor performance.
• Additionally, measure the direction and angle of the magnetic field by separately analyzing the output voltage generated by each  piezoelectric disc (Soldering Wires: Solder  wires to the positive and negative electrodes  of the piezoelectric disc to facilitate the  extraction of voltages generated during  magnetic field detection.)

Detection of Magnetic Fields:

• Sensor Placement: Place the press-fit magnetic sensor (100) in a location with at least one magnetic field source to be  detected.
• Voltage Generation: As the sensor detects magnetic fields, one or more voltages are generated by the piezoelectric discs (108)  within the sensor.
• Signal Transmission: Transmit the generated output voltages as signals through the soldered wires to an external  system for further analysis.
• Analysis and Measurement: Analyze the generated output voltages to detect the presence of at least one magnetic field.
• Additionally, measure the direction and angle of the magnetic field by separately analyzing the output voltage generated by  each piezoelectric disc (108).