1. Why is the visual angle greater than the measured angle when using the electronic compass?

 Answer: Since the two mutually perpendicular axes of the inclination measurement are the most sensitive (X-axis, Y-axis), when the inclination direction and the measurement axis are not parallel, the actual value will be greater than the measured value, which is understandable for projection.

2. How to understand the heading accuracy of the electronic compass?

Answer: The heading accuracy refers to the root mean square error, not random error. Generally, the heading accuracy is the value when the influence of the surrounding static magnetic field is compensated and the magnetic inclination angle cannot be greater than 75°.



3. Do we need to recalibrate the electronic compass when it is in use?

Answer: The electronic compass is generally calibrated before leaving the factory. In places where the magnetic field environment has little influence, there is no need to perform environmental calibration during use. Conversely, if the error is far greater than the nominal accuracy when in use, user calibration is required.

4. Why is the electronic compass sometimes unable to reach the nominal accuracy in actual use? Especially when there are pitch and roll angles in the measurement.

Answer: Generally, the environment when the user is calibrated is different from the actual environment used, or the calibration effect has not achieved good results. For example, when there is no tilt or roll when the electronic compass is rotated during calibration, but there are tilt and roll situations in actual use, then this kind of calibration is ineffective.

5. What is hard magnetic and soft magnetic?

Answer: Hard magnetism is caused by the proximity of a permanent magnet or magnetic steel or iron to the sensor. This type of distortion has a constant effect on the distortion of a fixed sensor in all directions. Hard magnetic distortion will superimpose a fixed magnetic field component on each axis of the sensor, so hard magnetic distortion can be compensated by a simple algorithm.
Soft magnetism is the result of the combined action of the earth's magnetic field and the soft magnetic material proximity sensor. Technically speaking, soft magnetic materials have high permeability.

6. How many kinds of electronic compass installation?

Answer: Woosens Technology provides customers with up to 24 installation methods according to their different usage methods.

7. What should be paid attention to when installing electronic compass?

Answer: Although the electronic compass can compensate for magnetic interference, users should choose an environment with the least magnetic interference to install and use, and choose as far away as possible from iron, nickel, magnets, motors and other magnetic materials. It should be installed in a relatively stable physical environment, and the installation location should be isolated from severe vibration, oscillation and jitter.