CLAMP-C 3983030 - Caterpillar

Cross Slope
For a slope control system, a combination of angle sensors and a rotation sensor are used. The sensors accurately measure the cross slope of the cutting edge of the machine. Corrections are sent to the hydraulic valves for the machine in order to drive and hold the cutting edge at a cross slope that has been predefined. Systems that are slope only can be used in order to spread material at a slope that has been set. Slope control systems can also be used in conjunction with elevation sensors or 3D sensors.3D Systems
3D Systems use sensors that can measure horizontal position and vertical position. The resulting X,Y, Z coordinates are compared against a design that was loaded into the system. The system sends corrections to the hydraulic valves for the machine in order to drive the cutting edge of the machine to grade. The system uses either a Advanced Tracking System (ATS) robotic total station or Global Positioning System (GPS) receivers as the 3D sensor.The idea behind the AccuGrade System is very simple. Computers and design software produce accurate 3D models of project designs. In the past, these models stayed in the office with the engineer. The engineer gave information to the surveyor. The surveyor then put stakes in the ground in order to guide the machine operators.With the AccuGrade System, the 3D model comes into the field as a design surface. By adding GPS, you can accurately determine the position of the blade on your machine in both horizontal direction and the vertical direction on the design surface. The cut or the fill that is to be applied to the design surface can then be computed on the machine in order to provide guidance for the machine.When all of the hardware is installed on the machine you need to configure the AccuGrade System. You can configure all system components with the Display. The Display is the onboard computer. The default settings support most of the conditions, but the settings can be changed as required. Items that need to be configured in order to make the AccuGrade System work properly include the following items:
GPS Receiver Configuration (Site Coordinates)
Light Bar Configurations
Radio Network Or Frequency
Machine Settings
Units Of Measurement
Machine Dimension Information
Pitch Sensor Calibration
Valve Calibration
Operator ConfigurationAt the start of any new project or work area the site calibration, and the design are required. GPS data is needed in order to position the blade. GPS signals are received through the GPS Receivers. At the same time, base station data is received through the data radio and sent to the left hand GPS Receiver. The GPS data from each GPS Receiver on the blade is combined with the slope information in the Display to produce a blade position and blade cross slope. The system uses the design in conjunction with the GPS information in order to compute the cut or the fill at the blade tips in respect to the design. The design can be in the form of a DTM (TIN or