Front loader task automation with distance measurement

Abstract: Front loaders are used in many agricultural applications. They are used in daily tasks that are performed by operators. The operator uses multiple different front loader equipment carrying out tasks, which are more or less repetitive. A common thing between these tasks even though different equipment is used, is that the working cycle is similar. A working cycle consists of multiple sequences. One of them involves loader control for desired object handling. If that part of the working cycle could be automated it could reduce the workload and operator stress, which would increase an operator’s daily working capacity. The aim with the thesis is to research the possibility to automate a part of the front loader working cycle. The goal is to create a prototype that can be used to automate the loader control part of the working cycle. The prototype will be implemented on a front loader for testing of a working cycle. To achieve the aim and goal, work will include research about which sensor technology that is best suited for the prototype. It will also include tests to see if there is a difference in accuracy when using a cheap or an expensive sensor and if it is possible to automate a part of the front loader working cycle. A sensor analysis was made and the ultrasonic sensor technology was chosen for the prototype. One expensive prototype sensor and one cheap extra sensor for comparison testing were chosen. Software was written for the sensors and they were tested on a test bench. The prototype was implemented on a front loader for test of a working cycle. The prototype can measure distance and send the required commands based on that. This indicates that it is possible to automate a part of the front loader working cycle.