Materials Handling Remote Button Sequence Checks for Control Reliability
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Solution Overview
Problem
Current materials handling vehicle remote control systems lack effective methods for testing operational characteristics, leading to potential operational failures and inefficiencies in warehouse and distribution center operations.
Innovation Solution
A method and system for testing operational characteristics of remote control devices associated with materials handling vehicles, involving a processor that waits for specific button inputs, determines the success of predetermined button pressing sequences, and provides visual indications of sequence success or failure, while also considering connection to a charging station and timing criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If remote control devices are used for materials handling vehicles, then operator flexibility and wireless operation are improved, but operational reliability and control accuracy deteriorate due to lack of effective testing methods
Solution Approach 1:
The system performs preliminary testing of button pressing sequences before actual vehicle operation. The processor simulates various button combinations and sequences that operators might use, identifying potential failures or unintended behaviors before they occur in real operations. This preventive approach ensures reliability is established in advance.
Solution Approach 2:
The system provides feedback mechanisms during testing by monitoring whether button presses produce the expected vehicle responses. The processor compares actual vehicle reactions against predetermined expected outcomes, identifying deviations that indicate reliability issues. This feedback loop enables continuous verification of remote control reliability.
2Reliability
If comprehensive button pressing sequences are tested, then operational reliability is improved, but testing time and system complexity increase
Solution Approach 1:
The system tests a representative subset of button pressing sequences rather than every possible combination. By identifying and testing the most critical and commonly used sequences, the system achieves sufficient reliability verification without the prohibitive time cost of exhaustive testing of all possible button combinations.
Solution Approach 2:
The testing process is segmented into multiple independent test cases, each evaluating specific button sequences or functional groups. This segmentation allows the testing to be performed in manageable units, reducing overall testing time while maintaining comprehensive coverage of critical operations through modular test execution.
3Measurement precision
If multiple button pressing sequences are monitored, then control accuracy is improved, but processor load and system complexity increase
Solution Approach 1:
The processor is designed to handle multiple testing functions simultaneously - monitoring button presses, tracking sequences, comparing outcomes, and generating reports - all through a single integrated system. This multi-functionality reduces the need for separate dedicated hardware for each testing function, managing system complexity while maintaining high measurement precision.
Solution Approach 2:
The system introduces an intermediary testing layer between the remote control device and the vehicle control system. This intermediary processor captures and analyzes button pressing sequences without interfering with normal vehicle operation, enabling precise monitoring while isolating the complexity of testing functions from the primary vehicle control systems.
Data Source
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AI summary
Testing operational characteristics of a remote control device (32) associated with a materials handling vehicle can include waiting for receipt of a first input indicative that a first button of the remote control device (32) has been pressed, wherein the first button comprises a travel button (197A) of the remote control device (32). The testing may further comprise waiting for receipt, subsequent to receiving the first input, of a second input indicative that at least a second button (197B-C) of the remote control device (32) has been pressed, wherein the second button (197B-C) relates to a first auxiliary vehicle function. The testing still further comprises determining whether or not a predetermined button pressing sequence is successful based at least in part on receiving or not receiving the first and second inputs; and optionally driving a display on the vehicle to provide a visual indication that the button pressing sequence is successful or not successful based on the determination.