Agricultural Ladder Position Notification System
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Solution Overview
Problem
The air cart ladder in agricultural systems is susceptible to damage if not properly stowed before resuming operation, due to lack of confirmation of its position during inspection, maintenance, or refilling processes.
Innovation Solution
An equipment notification system that utilizes sensors to detect the absence of ground speed or fan speed, determining if the ladder is in the access position for an extended period, and prompts the operator via a user interface to confirm the ladder's stowed position before commencing or resuming operation, using a processor and notification controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the ladder is left in the access position during inspection, maintenance, or refilling, then ease of operation is improved, but reliability deteriorates due to risk of damage
Solution Approach 1:
The system performs preliminary detection of the ladder position before operation commences or resumes. The processor detects whether the ladder is in the access position using sensor signals, and proactively generates a notification to the operator before movement occurs, preventing damage before it can happen.
Solution Approach 2:
The system implements feedback by continuously monitoring the ladder position sensor and ground speed sensor, comparing the ladder position against operational state, and providing feedback notifications to the operator when the ladder is improperly positioned, ensuring the operator is informed of the potential damage risk.
2Device complexity
If the ladder position is not monitored, then device complexity is reduced, but harmful factors increase due to unintended contact
Solution Approach 1:
The system uses an intermediary notification message as a mediator between the ladder position sensor and the operator. Rather than requiring direct physical monitoring or complex mechanical interlocks, the processor acts as an intermediary that receives sensor signals, processes them, and communicates the status to the operator through a notification, reducing mechanical complexity while preventing damage.
Solution Approach 2:
The patent replaces potential mechanical monitoring systems with an electronic sensing and notification system. Instead of using mechanical switches, physical blocks, or complex mechanical interlocks to prevent ladder damage, the system uses electronic sensors (ground speed sensor, ladder position sensor) and electronic notifications to achieve the same protective function with reduced mechanical complexity.
3Reliability
If the notification system is added, then reliability is improved by preventing damage, but device complexity increases
Solution Approach 1:
The notification system leverages existing multi-functional components in the agricultural vehicle. The processor that controls other vehicle functions is also used to detect ladder position and generate notifications. The user interface that displays operational information is also used to display ladder position warnings. This multi-functionality approach increases reliability without proportionally increasing overall system complexity.
Solution Approach 2:
The system uses existing sensors already present in the vehicle (ground speed sensor, ladder position sensor) to serve the additional function of ladder position monitoring. Rather than adding dedicated new sensors, the system repurposes existing sensing capabilities to provide ladder position confirmation, reducing the net increase in device complexity while improving reliability.
Data Source
AI summary
An equipment notification system for a component of an agricultural vehicle, including a processor configured to receive a first signal indicative of an operational parameter of the agricultural vehicle, determine an absence of the operational parameter based at least in part on the first signal, compare a period of time of the absence of the operational parameter to a threshold period of time associated with the operational parameter, and output, in response to determining that the period of time of the absence of the operational parameter exceeds the threshold period of time, a second signal indicative of an instruction to provide a notification regarding a position of the component of the agricultural vehicle via a user interface.