Work Vehicle Speed Restriction for Low Battery Return Range
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Users of work vehicles engaged in utility work in fields may fail to notice fuel or battery depletion, leading to unexpected stops at distant locations from energy replenishment sites, causing inconvenience and requiring unnecessary transportation of energy sources.
Innovation Solution
A work vehicle equipped with a driving wheel, power source, output instruction acquisition section, traveling control unit, reservoir section, remaining amount detection section, and restriction section that reduces maximum speed when the energy source is low, prompting the user to replenish the energy source by creating a sense of inconvenience or interference with the utility work.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the work vehicle operates autonomously with power source management, then the utility work efficiency is improved, but the user may fail to notice energy depletion and the vehicle may stop unexpectedly at distant locations from replenishment sites
Solution Approach 1:
The system implements feedback by detecting the remaining energy amount and providing continuous information to the user through the display unit. When energy depletes to a predetermined level or below, the system automatically displays depletion information, ensuring the user is aware of the energy status without interrupting the autonomous operation. This feedback mechanism resolves the contradiction by maintaining both autonomous operation and user awareness.
2Productivity
If the vehicle maintains normal operating speed, then the work efficiency is improved, but the energy source may be exhausted before reaching the replenishment site
Solution Approach 1:
The system dynamically adjusts the vehicle's operating speed based on the detected energy level. When energy depletes to the predetermined level or below, the speed control unit automatically reduces the operating speed to a predetermined value. This dynamic adjustment allows the vehicle to extend its travel distance to reach the replenishment site while consuming less energy, resolving the contradiction between maintaining work efficiency and ensuring sufficient energy for travel.
3Loss of energy
If the vehicle speed is reduced to conserve energy, then the energy consumption is improved, but the work output and productivity decrease
Solution Approach 1:
The system implements periodic monitoring of energy levels and conditional speed adjustment. Instead of continuously reducing speed, the vehicle maintains normal operating speed during periods when energy is sufficient, and only reduces speed periodically when energy depletes to the predetermined level or below. This periodic action pattern allows the vehicle to maximize productivity during adequate energy periods while conserving energy during critical periods, resolving the contradiction between energy consumption and work output.
Data Source
AI summary
A work vehicle includes a driving wheel provided in a machine body, a motor for inputting a rotational force to the driving wheel, a traveling control device for acquiring an output instruction for the motor according to an operation of a maneuvering lever, a traveling control unit for controlling driving of the motor in accordance with the output instruction, a battery for reserving energy source for driving the motor, a remaining amount detection section for detecting a remaining amount of the energy source in the battery, and a restriction section for restricting a maximum speed of the machine body to a preset speed irrespectively of the output instruction if the remaining amount of the energy source is equal to or smaller than a preset first threshold value.