A finger-position sensitive human machine interface for handling a user input of a user and a method for handling a user input of a user of a finger-position sensitive human machine interface

Abstract

The invention relates to a finger-position sensitive HMI (2) for handling a user input (3) of a user. The HMI (2) comprises an EDPU (4) arranged to run an HMI OS and comprises a finger-position sensitive display (6) connected to the EDPU (4). The HMI OS is arranged to generate a button (5) and a display location for the button (5) on the display (6), and request the display (6) to display the button (5) at the generated display location. The display (6) is arranged to display the generated button (5) at the generated display location, to detect touch coordinates of a touched location (7) on the display (6), to provide the detected touch coordinates to the HMI OS, and to detect a force signal caused by pressure being applied to the display (6). The display (6) is connected to a supervising element (8) and is further arranged to provide the detected force signal to the supervising element (8). The EDPU (4) is connected to the supervising element (8). The HMI OS is further arranged to generate a service request related to the displayed button (5) and to provide the service request to the supervising element (8), if the condition is fulfilled that the detected touch coordinates fit to the generated display location, and to provide a source button bitmap content indicator of a bitmap of the button (5) that was requested to be displayed at the generated display location, to the supervising element (8). The HMI comprises a check unit (10). The check unit (10) is connected to the supervising element (8) and is arranged to observe a displayed button (5) at the generated display location, to generate an observed button bitmap content indicator of a pixel area related to the observed displayed button (5), and to provide the observed button bitmap content indicator to the supervising element (8). The supervising element (8) is arranged to release the provided service request related to the displayed button (5), if the conditions are fulfilled that the detected force signal, provided to the supervising element (8), indicates that at least a predefined amount of pressure has been applied to the display (6), and that a comparison of the provided observed button bitmap content indicator with the provided source button bitmap content indicator indicates that the provided service request is valid.

Description

technical field [0001] The present invention relates to a finger position-sensitive human-machine interface for processing a user input of a user and a method for processing a user input of a user of a finger-position-sensitive human-machine interface. [0002] The invention is suitable for all types of vehicles, such as trucks, buses, passenger cars, but also for working machines in the field of industrial construction machines or construction equipment, such as dump trucks. [0003] Although the invention will be described with respect to a work machine in the form of a dump truck, the invention is not limited to this particular machine but may also be used with other work machines such as cranes, excavators, wheel loaders and backhoe loaders. [0004] Hereinafter, the term "human machine interface" is abbreviated as the term "HMI", the term "electronic data processing unit" is abbreviated as the term "EDPU", the term "operating system" is abbreviated as the term "OS", and t...

AI Technical Summary

Problems solved by technology

[0007] However, the controllers of electronic devices are susceptible to software bugs and / or electromagnetic fields, both of which can cause malfunctions

Therefore, the controller is not reliable enough for safety-related commands

Images