Autonomous Lawn Mower Battery Return Control for Continuous Operation
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Solution Overview
Problem
Existing land maintenance systems face challenges in managing battery charge levels of mobile devices, leading to potential blockages and inefficiencies due to battery depletion, resulting in increased recharging costs and downtime.
Innovation Solution
A land maintenance system equipped with a control unit that utilizes GPS or GNSS sensors to monitor the mobile device's position and operational parameters, determining the remaining battery charge and adjusting operations to prevent blockages by activating energy-saving modes or guiding the device back to a docking station when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mobile device operates continuously to complete maintenance operations, then productivity is improved, but the battery charge depletes leading to device blockage and downtime
Solution Approach 1:
The control unit performs preliminary actions by monitoring battery charge levels and predicting remaining operational time before complete depletion occurs. It proactively plans device return to docking station based on predicted battery lifespan, preventing blockage before it happens and ensuring continuous maintenance operations across multiple working cycles.
Solution Approach 2:
The system implements feedback mechanisms where the control unit continuously receives battery charge level data, monitors operational parameters, and adjusts device behavior accordingly. The feedback loop enables the device to optimize its working cycle by balancing maintenance operation completion with battery charge management, ensuring reliable continuous operation.
2Reliability
If the mobile device returns to docking station for recharging, then battery charge is restored, but productivity decreases due to downtime
Solution Approach 1:
The control unit performs preliminary planning by predicting remaining battery operational time and calculating optimal return timing to docking station. It schedules device return during natural transitions between working cycles or less critical periods, minimizing productivity impact while ensuring battery charge sustainability for continuous operations.
Solution Approach 2:
The system dynamically adjusts device operational parameters and return timing based on real-time battery charge levels and working cycle progress. The control unit optimizes the balance between maintaining productivity and ensuring battery sustainability by adapting device behavior to current operational context and battery state.
3Productivity
If the device operates at full power to maximize efficiency, then productivity increases, but energy consumption accelerates battery depletion
Solution Approach 1:
The control unit dynamically adjusts device operational parameters including power consumption levels based on real-time battery charge monitoring. It optimizes the balance between maintaining high productivity during adequate charge periods and reducing power consumption when charge levels indicate approaching depletion, thereby extending operational capacity across multiple working cycles.
Solution Approach 2:
The system changes operational parameters such as power consumption rate and working cycle intensity based on battery charge state. The control unit modifies device operation mode to optimize the trade-off between productivity and energy consumption, ensuring sustainable operation by adapting parameters to current battery status and predicted remaining operational time.
Data Source
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AI summary
Land maintenance system, in particular turfgrasses or gardens or agricultural land, comprising at least one mobile device configured to carry out, within a working area, maintenance operations, in particular grass cutting operations, and at least one control unit operatively connected to the mobile device. The mobile device comprises a payload and a motor operatively connected to the payload. The control unit is configured to detect at least one operative parameter, define an operative index on the basis of the operative parameter, and determine, as a function of said operative index, an operational efficiency index of the mobile device relating to maintenance operations.