Abstract: The invention relates to a method (100) for monitoring the accuracy of the azimuthal orientation of a handheld optoelectronic measuring device to be determined (110) by means of an electronic magnetic compass, including an automatic ascertainment (120) of an estimated accuracy value by the measuring device based on measured data of the magnetic compass, characterized by a safety check (200), within the scope of which a probability that the estimated accuracy value meets a previously determined (140) accuracy criterion is automatically ascertained (220) by the measuring device, and the ascertained probability is provided (230) to a user as a return value. The invention also relates to a handheld optoelectronic measuring device including an electronic magnetic compass for carrying out the method according to the invention.

Abstract: Disclosed is an optoelectronic measuring device having an electronic magnetic compass for determining an azimuthal alignment of the measuring device and a compensation unit, which is associated with the magnetic compass, for compensating for device-fixed interference fields, wherein the measuring device assumes at least two defined, repeatable operating states, has a different device-fixed interference field in each of the operating states, and the compensation unit carries out an initial compensation of the electronic magnetic compass in a first operating state of the measuring device, wherein the compensation unit has a detection unit for detecting a present operating state, a memory unit for storing a magnetic offset resulting from the different device-fixed interference fields between the first and a second operating state of the measuring device, and a computer unit for computing the azimuthal alignment of the measuring device depending on an ascertained operating state and based on the magnetic offset.

Abstract: The invention relates to a method for a field compensation of an electronic compass for influences to a geomagnetic field by magnetic objects in the vicinity of the compass, that is done with acquiring a magnetic field value by a magnetic field sensor and acquiring an inclination with respect to level plane by an accelerometer, in a discrete set of multiple orientations of the compass. Therein, a user guidance for subsequently orienting the compass into a predetermined desired range of orientation is provided to the user. In the following, compensation data are calculated from those magnetic sensor acquisitions to compensate for the influences in such a way, that a magnetic north heading is determinable based on the compensated magnetic field values. Therein, the user guidance for the compensation is done with a gathering of directional information based on rotary rate readings from a gyroscope for an azimuthal component of the orientation.

Abstract: Disclosed is an optoelectronic measuring device having an electronic magnetic compass for determining an azimuthal alignment of the measuring device and a compensation unit, which is associated with the magnetic compass, for compensating for device-fixed interference fields, wherein the measuring device assumes at least two defined, repeatable operating states, has a different device-fixed interference field in each of the operating states, and the compensation unit carries out an initial compensation of the electronic magnetic compass in a first operating state of the measuring device, wherein the compensation unit has a detection unit for detecting a present operating state, a memory unit for storing a magnetic offset resulting from the different device-fixed interference fields between the first and a second operating state of the measuring device, and a computer unit for computing the azimuthal alignment of the measuring device depending on an ascertained operating state and based on the magnetic offset.

Abstract: The invention relates to a method (100) for monitoring the accuracy of the azimuthal orientation of a handheld optoelectronic measuring device to be determined (110) by means of an electronic magnetic compass, including an automatic ascertainment (120) of an estimated accuracy value by the measuring device based on measured data of the magnetic compass, characterized by a safety check (200), within the scope of which a probability that the estimated accuracy value meets a previously determined (140) accuracy criterion is automatically ascertained (220) by the measuring device, and the ascertained probability is provided (230) to a user as a return value. The invention also relates to a handheld optoelectronic measuring device including an electronic magnetic compass for carrying out the method according to the invention.

Abstract: The invention relates to a method for a field compensation of an electronic compass for influences to a geomagnetic field by magnetic objects in the vicinity of the compass, that is done with acquiring a magnetic field value by a magnetic field sensor and acquiring an inclination with respect to level plane by an accelerometer, in a discrete set of multiple orientations of the compass. Therein, a user guidance for subsequently orienting the compass into a predetermined desired range of orientation is provided to the user. In the following, compensation data are calculated from those magnetic sensor acquisitions to compensate for the influences in such a way, that a magnetic north heading is determinable based on the compensated magnetic field values. Therein, the user guidance for the compensation is done with a gathering of directional information based on rotary rate readings from a gyroscope for an azimuthal component of the orientation.