CAN Bus Data Interface for Agricultural Machinery External Display
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Solution Overview
Problem
Current systems for agricultural working machines lack the ability to display graphical user interfaces on external devices, particularly mobile devices, due to compatibility issues with the ISO bus standard, limiting data transmission and user interface visibility.
Innovation Solution
A system that uses a data interface within the CAN bus system to process and convert electronic data into graphical displayable formats, allowing transmission to external devices without requiring them to be ISO bus-compliant, and includes a computer module to derive and deliver data to external receivers, enabling display on various devices like tablets and smartphones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transmission uses ISO bus standard (CAN bus system), then reliable communication between agricultural machines is achieved, but compatibility with external mobile devices is lost
Solution Approach 1:
The patent introduces an intermediary conversion device that acts as a bridge between the ISO bus system and external mobile devices. This device receives data from the ISO bus, converts it into universal formats, and transmits it to external devices, thereby maintaining both the reliability of ISO bus communication and the compatibility with diverse external devices.
Solution Approach 2:
The patent changes the data format parameter from ISO bus-specific protocols to universal formats that can be processed by mobile devices. By transforming the data representation while preserving the underlying information, the system maintains communication reliability while adapting to different device requirements.
2Ease of operation
If manufacturer-specific applications are used on mobile terminals, then user interface display is enabled, but system complexity and dependency increase
Solution Approach 1:
The patent creates a copy of the machine's user interface data and transmits it to external mobile devices in a universal format. This allows the interface to be displayed on any mobile device without requiring manufacturer-specific applications, reducing system dependency while maintaining ease of operation.
Solution Approach 2:
The patent implements a universal data interface that can communicate with any mobile device regardless of manufacturer or model. This universal approach eliminates the need for device-specific applications, reducing complexity and dependency while maintaining broad accessibility.
3Reliability
If graphical user interfaces are displayed only on machine terminals, then data security is maintained, but remote monitoring capability is limited
Solution Approach 1:
The patent introduces an intermediary data conversion layer that securely extracts and transmits interface data to external devices. This intermediary mechanism maintains data security by controlled transmission while enabling remote monitoring capabilities through universal device compatibility.
Data Source
Figure 1
AI summary
A system (10) and a method for data communication between agricultural machinery (12) or components of work combinations and at least one external receiver (20) via a bus system, preferably a CAN bus system, are disclosed. The bus system comprises a control computer (16), a display and input terminal (14), in particular one assigned to a machine operator's workstation, and a data interface for data communication with at least one external receiver (20), which is formed by at least one display device (22) and/or operating device. Universal data processed and converted in the data interface is generated from the data or data protocols transported in the bus system in the form of image data that can be graphically displayed by the at least one external receiver (20) and is made available to the at least one receiver (20).A computer module is assigned to the data interface, which obtains the data to be delivered to the external receiver device (20) from the data and data protocols transmitted in the bus system between the control computer (16) and the display and input terminal (14).