The dynamic measurement advantages of magneto electric speed sensors:
1. Non contact measurement
No mechanical connection required, avoiding friction and wear, suitable for high-speed rotation (up to tens of thousands of revolutions per minute) or high temperature environments.
Typical applications: motor rotors, automotive engine crankshafts, fan impellers, etc.
2. High dynamic response
High response frequency, capable of capturing small fluctuations or transient changes in rotational speed.
Example: Detecting shaft torsional vibration or sudden shutdown in vibration monitoring.
3. Adapt to complex environments
Low sensitivity to oil and dust, resistant to harsh conditions such as high temperature, humidity, and vibration in industrial sites.
Protection level: usually IP65~IP68, some models can be immersed in water for use.
4. Wide range
The measurable speed range is wide and can be adapted to different needs by adjusting the number of gear teeth or signal processing.
Application scenarios for dynamic measurement of magneto electric speed sensors:
1. Industrial automation
Motor speed closed-loop control (such as frequency converter speed feedback), conveyor belt line speed monitoring.
2. Automotive testing
Engine crankshaft/camshaft speed measurement, ABS system wheel speed detection, transmission efficiency analysis.
3. Energy and Electricity
Wind turbine main shaft speed monitoring and gas turbine vibration analysis.
4. Scientific research experiments
Research on the dynamics of rotating machinery, such as torsional vibration of shafts and analysis of start/stop processes.
Suggestions for optimizing dynamic measurement of magneto electric speed sensors:
1. Gear design
Select uniformly distributed gears to improve pulse resolution;
The gear material should be magnetic (such as iron) and have a smooth surface without burrs.
2. Signal processing
Use a filtering circuit to remove high-frequency noise, paired with a frequency meter (such as FPV) or microcontroller for counting;
Adopting frequency doubling technology to improve low-speed measurement accuracy.
3. Installation precautions
The clearance between the sensor and the gear needs to be stable (compensated for vibration through brackets or elastic elements);
Avoid axial displacement and ensure optimal magnetic field coupling.
4. Temperature compensation
High temperature environments require the use of high-temperature resistant sensors (such as ceramic shells) or external temperature compensation circuits.