Working Machine Stop Distance Measurement Using ECU Speed Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing proximity detection systems (PDS) in working machines lack a reliable and efficient method to measure the stopping distance, which is crucial for ensuring safety and proper functioning of the machines.
Innovation Solution
A stop distance measuring apparatus that includes a user interface, at least one processor, and memory configured to receive speed parameters, retrieve speed information from the machine's controller or engine control unit, send commands to control the machine's speed, and calculate the stopping distance. This apparatus can test both the brakes and the PDS function of the working machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a Proximity Detection System (PDS) is implemented to detect persons or objects, then safety is improved by preventing collisions, but the system requires accurate stopping distance measurement capability which may not be reliably available
Solution Approach 1:
The system uses the machine's own existing sensors and control systems to measure stopping distance. The processor utilizes data from the machine's controller or ECU about its own motion and braking characteristics, eliminating the need for external measurement equipment and achieving self-diagnosis capability.
Solution Approach 2:
The patent replaces traditional mechanical stopping distance measurement methods with an electronic/computational approach. The processor calculates stopping distance by receiving speed information from the ECU, sending stop commands, and computing the distance based on electronic data rather than physical measurement tools.
2Measurement precision
If traditional stopping distance measurement methods are used, then the system can obtain stopping distance data, but the method is not fast or reliable enough to properly test PDS function and brake performance
Solution Approach 1:
The system continuously receives speed information from the ECU during the stopping process rather than taking intermittent measurements. This continuous data stream allows for accurate real-time calculation of stopping distance and enables fast, reliable testing of PDS function and brake performance.
Solution Approach 2:
The processor sends a stop command to the controller and then receives continuous speed information feedback from the ECU during the deceleration process. This feedback loop enables the system to calculate stopping distance accurately and quickly, improving both measurement precision and testing efficiency.
Data Source
AI summary
An apparatus for measuring the stopping distance of a working machine is provided. The working machine includes a user interface, at least one processor, and at least one memory including a computer program code. The at least one memory and the computer code are configured to, with the at least one processor, cause the apparatus at least to: receive at least one speed parameter based on at least one user input on the user interface, receive at least one speed information value from a controller or the engine control unit of the working machine, send at least one command to the controller or the engine control unit to at least stop the working machine when the received speed information value is equal to the at least one speed parameter, and calculate the stopping distance of the working machine. A method and a system are also disclosed.