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Application of linear hall effect sensor

Update: 2019-10-17 16:40 Source: LUFTMY Reading: ↻ News
 

The accuracy of a good linear hall effect sensor is critical for many applications on which we rely every day.Without linear hall effect sensors, we don't know when a car is low on fuel and can easily get stuck on the road.The linear Hall effect sensor also contributes to the transmission function of the vehicle transmission.

However, many linear hall effect sensors provide much more functionality than most applications, which can be a cost burden.In general, engineers need a basic, reliable linear hall sensor that provides exactly what the hall sensor needs without any deviation.

hall effect sensor
hall effect sensor

But first, the linear hall effect sensor is the basis

Hall effect sensor (hall sensor for short) is a kind of sensor which changes its output voltage with the change of the magnetic field nearby.In the hall sensor, a current is applied along a thin strip of conductive material.In the presence of a magnetic field, electrons move along a strip of wire, causing voltage changes on both sides perpendicular to the current.

Most hall sensors provide user-programmable gain, offset, and temperature compensation, so one sensor can be used in many applications.This also means that you can easily change design thresholds and sensitivity without changing your hardware or the code on the MCU.

Many different functions of the linear hall effect sensor make many different applications possible.The linear hall effect sensor's ability to detect linear travel allows the car to track the position of the valve.Linear hall effect sensors can also track positive travel, such as those used in scales (not only for the body, but also for vehicles, cargo, and so on).Because the linear hall effect sensor provides Angle measurements, the application can connect the sensor to the float for a level measurement, just like a level measurement in a car tank.Linear hall effect sensors work with brushless dc motors as well, helping to induction rotor position to provide smooth operation.

Although similar to a rotating hall effect sensor, a linear hall effect sensor measures the linear motion of a magnetic field, not rotation.While these tiny devices may seem difficult to customize, they are actually easy to program based on the output voltage.

Keep it universal

Hall effect sensor has proportional metering, linear analog output.Sensors can be used for magnetic field measurements, such as current measurements or mechanical motion measurements, such as small Angle or distance measurements.These sensors are very robust and can be used in harsh electrical and mechanical environments.

In nonvolatile memory, the main characteristics such as magnetic field range, sensitivity, offset, and temperature coefficients are programmable.Several output signal clamping levels can be programmed to display various fault conditions: overvoltage, overflow or heat monitoring.

Simple programmability allows two-point calibration by adjusting the output signal directly to the input signal (such as mechanical Angle, distance, or current).During the customer's manufacturing process, individual adjustments for each sensor are possible.Through this calibration procedure, errors in sensor, magnet and mechanical positioning can be compensated in the final assembly.

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