Laser-based controller for adjusting the height of a machining tool of a construction machine
First Claim
1. Laser-regulating means for a construction machine for adjusting the height of a height-adjustable machining tool, comprisinga first laser measuring head, a second laser measuring head, and a third laser measuring head, which are arranged at the construction machine, with the first laser measuring head and the second laser measuring head being arranged at a first angle to each other, with the first laser measuring head and the third laser measuring head being arranged at a second angle to each other, with the first angle and the second angle being selected such that a first measuring point of the first laser measuring head, a second measuring point of the second laser measuring head, and a third measuring point of the third laser measuring head are spaced from each other on a reference surface, with the first measuring point, the second measuring point, and the third measuring point being arranged essentially behind each other in the direction of motion of the construction machine;
- and an evaluating means, which, depending on output signals of the first laser measuring head, the second laser measuring head, and the third laser measuring head, determines a first distance of the first laser measuring head from the reference surface, a second distance of the second laser measuring head from the reference surface, and a third distance of the third laser measuring head from the reference surface, on the basis of the determined distances and the known geometric arrangement of the first laser measuring head, the second laser measuring head, and the third laser measuring head relative to the machining tool, calculates the height of the machining tool relative to the reference surface and, depending on the calculated height and a target height, generates a height-control signal for the machining tool.
1 Assignment
0 Petitions
Accused Products
Abstract
A laser-regulating means for a construction machine for adjusting the height of a height-adjustable machining tool includes three laser measuring heads which are directed to three measuring points being spaced from each other on a reference surface, and an evaluating means, which, from the output signals of the laser measuring heads and from the known geometric arrangement of the laser measuring heads as regards the machining tool, determines the height of the machining tool relative to a reference surface and, from this height and from a target height determines a control signal for a height-adjustment of the machining tool. The construction machine is a road finisher with a height-adjustable plank or a cold planer with a height-adjustable milling drum.
-
Citations
13 Claims
-
1. Laser-regulating means for a construction machine for adjusting the height of a height-adjustable machining tool, comprising
a first laser measuring head, a second laser measuring head, and a third laser measuring head, which are arranged at the construction machine, with the first laser measuring head and the second laser measuring head being arranged at a first angle to each other, with the first laser measuring head and the third laser measuring head being arranged at a second angle to each other, with the first angle and the second angle being selected such that a first measuring point of the first laser measuring head, a second measuring point of the second laser measuring head, and a third measuring point of the third laser measuring head are spaced from each other on a reference surface, with the first measuring point, the second measuring point, and the third measuring point being arranged essentially behind each other in the direction of motion of the construction machine; - and
an evaluating means, which, depending on output signals of the first laser measuring head, the second laser measuring head, and the third laser measuring head, determines a first distance of the first laser measuring head from the reference surface, a second distance of the second laser measuring head from the reference surface, and a third distance of the third laser measuring head from the reference surface, on the basis of the determined distances and the known geometric arrangement of the first laser measuring head, the second laser measuring head, and the third laser measuring head relative to the machining tool, calculates the height of the machining tool relative to the reference surface and, depending on the calculated height and a target height, generates a height-control signal for the machining tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- and
-
13. Laser-based controller for adjusting the height of a machining tool of a construction machine, the controller comprising
a first laser measuring head; -
a second laser measuring head;
a third laser measuring head;
wherein the first laser measuring head is configured to emit a first laser beam, the second laser measuring head is configured to emit a second laser beam under a first angle with regard to the first laser beam, and the third laser measuring head is configured to emit a third laser beam under a second angle with regard to the first laser beam, wherein the first angle and the second angle are selected such that a first, second and third measuring point of the first, second and third laser measuring head are arranged spaced from each other and behind each other in the direction of motion of the construction machine on a reference surface, and wherein the laser measuring heads are arranged adjacent to each other in spatial proximity above the adjustable machining tool; and
an evaluating means configured to determine, on the basis of output signals from the first, second and third laser measuring heads, a first distance of the first laser measuring head from the reference surface, a second distance of the second laser measuring head from the reference surface, and a third distance of the third laser measuring head from the reference surface, wherein the evaluating means is further configured to calculate, on the basis of the determined distances and the known geometric arrangement of the first, second and third measuring head relative to the machining tool, the height of the machining tool relative to the reference surface, and wherein the evaluating means is further configured to generate, on the basis of the calculated height and a target height, a height-control signal for the machining tool.
-
Specification