Autonomous Lawn Mower Battery Swapping and Roll-Angle Blade Shutdown
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Solution Overview
Problem
Current autonomous lawn care devices face limitations in battery life, requiring frequent recharging and human supervision, and lack communication capabilities, leading to inefficiencies and increased costs for commercial lawn care services.
Innovation Solution
The development of autonomous lawn mowers equipped with removable rechargeable batteries, sensors, and communication antennas, allowing for extended operation without downtime, and enabling communication with lawn care service providers to monitor and manage devices remotely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If autonomous lawn care devices use current battery technology, then they can operate independently, but they require frequent recharging which limits operational duration
Solution Approach 1:
The battery system is divided into multiple removable battery packs that can be individually replaced. When one battery pack is depleted, the device can quickly swap to a fresh pack, eliminating long recharging downtime while maintaining independent operation.
Solution Approach 2:
Multiple battery packs are prepared in advance and kept ready for immediate replacement. This preliminary preparation ensures that when one battery is depleted, operational continuity is maintained without significant interruption.
2Productivity
If autonomous lawn care devices lack communication capabilities, then device structure remains simple, but operational efficiency decreases due to lack of remote monitoring
Solution Approach 1:
The communication antenna and controller enable the lawn care device to perform multiple functions: remote monitoring of operational status, battery level tracking, and diagnostic capabilities. This multi-functionality improves productivity without proportionally increasing complexity.
Solution Approach 2:
The communication system provides real-time feedback on device status, battery levels, and operational parameters to remote controllers. This feedback mechanism enables efficient monitoring and management, improving operational efficiency through data-driven decisions.
Data Source
AI summary
An autonomous lawn mower includes removable batteries, one or more electric motors, a cutting blade, one or more wheels, an angle sensor, and a controller. The cutting blade is driven by one of the electric motors. The wheels are driven by one of the electric motors. The controller is configured to allow the lawn mower to perform a grass cutting function at a jobsite without human interaction. The controller is configured to determine whether a roll angle is greater than a first predefined amount using data from the angle sensor. In response to determining the roll angle is greater than the first predefined amount, the controller is configured to stop operation of one of the one or more electric motors configured to provide rotational drive power to the cutting blade.