Work Machine Control Unit ID Assignment by Installation Site
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Solution Overview
Problem
The on-board network system described in existing patents is prone to ID setting errors due to randomly selected IDs, which can lead to incorrect assignments.
Innovation Solution
A work machine is equipped with a control unit that determines its function based on its installation site, using a main control unit (MCU) and power control units (PCUs) to acquire and process site-specific information, ensuring accurate ID assignment and preventing setting errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a random ID is selected from the ID table for assignment to control units, then the ID assignment process is simplified and faster, but ID setting errors may occur leading to incorrect assignments
Solution Approach 1:
The patent applies preliminary action by pre-registering control unit types and their corresponding IDs in the ID table before actual control unit installation. The system prepares installation site information and matches it with registered types to determine appropriate IDs in advance, rather than randomly assigning IDs after installation. This preliminary preparation ensures accurate ID assignment while maintaining efficient processing.
Solution Approach 2:
The patent implements feedback by using installation site information from the work machine to determine which control unit type should be installed, and consequently which ID should be assigned. The system receives feedback about the actual installation site characteristics and uses this information to select the appropriate pre-registered control unit type and its corresponding ID from the ID table, ensuring accurate matching between physical installation and logical identification.
2Reliability
If control unit functions are set based on installation site information, then setting errors are prevented and reliability is improved, but the system complexity increases due to additional information processing requirements
Solution Approach 1:
The patent applies universality by creating a standardized ID table structure that can accommodate multiple control unit types and their corresponding installation sites. The same basic mechanism (comparing installation site information with registered types) serves multiple functions: identifying control unit type, determining appropriate ID, and ensuring correct function setting. This universal approach reduces the need for separate complex processing systems for each control unit type.
Solution Approach 2:
The patent implements self-service by enabling the control unit to automatically determine its own function and ID based on its installation site information, without requiring manual configuration or complex external intervention. The control unit uses the pre-registered information in the ID table to self-identify and self-configure, reducing system complexity while maintaining high reliability in function setting.
Data Source
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AI summary
To provide an identification system for a work machine which is capable of preventing a setting error, the identification system for a work machine includes: a first control device to control the entirety of a work machine; and a plurality of second control devices to control components of the work machine. The first control device acquires information about the entire vehicle body of the work machine. Each of the second control devices acquires different information about a state of one of the components from that acquired by the other second control devices, on the basis of a installation site of the second control device installed on the work machine. In addition, the second control device sets a function of the second control device on the basis of the information about the state and the information about the entire vehicle body.