Abstract: An earthworking machine having a working tool at the end of an articulated arm is automatically calibrated. The calibration method includes collecting angular position data relating to different articulated components, after a series of movements of the end of the working tool between reference points located in accordance with a given geometrical configuration. These data are derived by imprecisely positioned detectors on each articulated component and then sent to a machine calibration system that executes a calculation module of the calibration system to determine, by use of known input data, unknown parameters which, once determined, control a luminous indicator display which guides the machine operator in the horizontal and/or vertical movements for the depth of the tool.

Abstract: A height recording system includes a telescopic rule formed from a head and a telescopic assembly used to vary a distance between one support end forming a base for the telescopic assembly and an upper end supporting the head. The height recording system comprises: a measurement system that measures the distance; a receiver including photosensitive cell(s) to detect an optical beam output from a laser system; a module starts or validates a height measurement by the measurement system starting the measurement or the validation in response to the module receiving a determined signal from the receiver; the determined signal being representative of the laser beam being detected by one of the photosensitive cells.

Abstract: The system is used to determine the position of a tool mounted on a digging machine. It includes a monitoring appliance and several independent position-detecting devices each including a face equipped with attachment elements to be held flush against an articulated component of the machine, a wireless communication module remotely sending data to the monitoring appliance, an independent electrical power supply source, a processing unit, and an electronic module with angular position sensors. The devices are distributed so that each is on a different articulated part of the machine. They need no cables, and are easy to fit. The signals emitted by the devices are received by the monitoring appliance, which calculates a setpoint for positioning the tool.

Abstract: A height recording system includes a telescopic rule formed from a head and a telescopic assembly used to vary a distance between one support end forming a base for the telescopic assembly and an upper end supporting the head. The height recording system comprises: a measurement system that measures the distance; a receiver including photosensitive cell(s) to detect an optical beam output from a laser system; a module starts or validates a height measurement by the measurement system starting the measurement or the validation in response to the module receiving a determined signal from the receiver; the determined signal being representative of the laser beam being detected by one of the photosensitive cells.

Abstract: A system for determining the position of a tool mounted on a digging machine includes a monitoring appliance and several independent position-detecting devices each including: an attachment face including attachment elements held flush against an articulated component of the machine, a wireless communication module that sends data to the monitoring appliance, an independent electrical power supply source, a processing unit, an electronic module with angular position sensors. The devices are distributed so that each is on a different articulated part of the machine. The devices need no cables and are easy to fit. Signals emitted by the devices are received by the monitoring appliance, which calculates a set point for positioning the tool. The set point is displayed on a screen for viewing by an operator located in a cab.

Abstract: An earthworking machine having a working tool at the end of an articulated arm is automatically calibrated. The calibration method includes collecting angular position data relating to different articulated components, after a series of movements of the end of the working tool between reference points located in accordance with a given geometrical configuration. These data are derived by imprecisely positioned detectors on each articulated component and then sent to a machine calibration system that executes a calculation module of the calibration system to determine, by use of known input data, unknown parameters which, once determined, control a luminous indicator display which guides the machine operator in the horizontal and/or vertical movements for the depth of the tool.

Abstract: A modular laser level determination system includes a laser beam generator in a housing, fixed to a positioner. The laser beam is oriented towards a central shaft inside the housing that is not closed off by any obstacles and passes through a collimator. A rotation drive module of an optical assembly comprises at least one reflection plane. The rotation drive module extends in a direction coaxial with the center line of the laser beam. The rotation drive module comprises a brushless motor with electronic switching, a hollow shaft, and a stator fixed to an element fixed in rotation. The stator can be tilted by a module for determination and adjustment of the inclination with respect to a reference place. The laser beam generator is fixed to the brushless motor.

Abstract: This invention relates to a modular laser level determination system comprising a laser beam generator in a housing (1), fixed to positioning means, the laser beam being oriented towards a central shaft inside the housing (1) not closed off by any obstacles and firstly passing through collimation means, a rotation drive module of an optical assembly comprising at least one reflection plane, the said rotation drive module being arranged along a direction coaxial with the centre line of the laser beam, characterized by the fact that the rotation drive module of the said optical assembly comprises a brushless motor (1) with electronic switching and a hollow shaft (51), the stator (53) of which is fixed to a element fixed in rotation and that can be tilted by a module for determination and adjustment of the inclination with respect to a reference place, the said laser beam generator being fixed to the brushless motor (5).