The world of robotic lawn mowers has undergone a remarkable transformation in recent years. While perimeter wire installation has been the industry standard for nearly two decades, innovative satellite-based navigation and other technologies are now revolutionising how these automated gardening assistants operate. Let's explore the evolution of robot mower navigation systems and understand why most modern models are breaking free from the traditional boundary wire setup.
The Traditional Approach: Perimeter Wire Systems
For many years, the perimeter wire system has been the backbone of robotic mower navigation. This tried-and-tested method involves installing a low-voltage boundary wire around the perimeter of your lawn and around obstacles like garden beds, trees, and pools. The wire creates an electromagnetic field that the mower's sensors detect, effectively creating invisible walls that keep the robot within its designated mowing area.
The advantages of wire-based systems include:
- Reliable performance in all weather conditions
- Precise boundary definition
- Cost-effective solution
- Works well in areas with poor satellite reception
However, traditional wire systems also come with some drawbacks:
- Installation can be time-consuming and best done by a professional (typically 3-4 hours)
- Wire can be damaged during garden maintenance
- Modifications to the mowing area require rewiring
- Limited flexibility for changing layouts
The Next Generation: RTK-GPS Technology
Real-Time Kinematic (RTK) GPS technology represents a significant leap forward in robotic mower navigation. This advanced satellite-based system provides centimetre-level positioning accuracy, allowing modern robotic mowers to operate without physical boundary wires. Instead, virtual boundaries are created using GPS coordinates, which can be easily modified through a smartphone app.
Key benefits of RTK-GPS systems include:
- Ability to track the mower from area to area across hard surfaces
- No physical wire installation is required
- Flexible boundary adjustment through digital mapping
- Multiple zone management with ease
- More efficient mowing as the mower will mow in straight lines
- Reduced installation time and maintenance
- Higher precision navigation capabilities
How RTK-GPS Navigation Works
RTK-GPS technology uses a network of satellites and ground-based reference stations to achieve precise positioning. The system works by:
- Receiving signals from multiple satellites.
- Connecting to a local base station for error correction.
- Processing real-time position data.
- Maintaining accurate location awareness within 1-2 centimeters.
This level of accuracy ensures the mower stays within its designated boundaries while efficiently covering the entire lawn area.
Choosing Between Wire-Based and Wire-Free Systems
When deciding between traditional wire-based and modern RTK-GPS systems, consider these factors:
Property Characteristics:
- Large, open areas benefit more from RTK-GPS systems however additional technologies such as AI vision, Lidar and others are rapidly being introduced into robotic mowers
- Properties with many obstacles might still prefer wire-based solutions
- Areas with poor satellite reception may require traditional wire systems
Budget Considerations:
- Wire-free systems may have a higher initial cost for the mower but no installation cost
- Traditional systems may have lower upfront costs but require more installation effort
Technical Comfort Level:
- RTK-GPS systems require basic smartphone operation skills
- Wire-based systems need physical installation expertise
The Future of Robot Mower Navigation
As technology advances, we're rapidly shifting toward wire-free solutions, and we rarely get asked to buy a wired robotic lawn mower. However, both systems will likely coexist in the market for a few years, serving different user needs and preferences. Some manufacturers are even developing hybrid systems that combine the benefits of both technologies.
Making the Right Choice
When selecting a robotic mower, consider:
- Your property size and layout
- Local satellite reception quality (generally not an issue in the Southern Hemisphere)
- Installation preferences
- Budget constraints
- Desired level of flexibility
While wire-free systems represent the cutting edge of robotic mower technology, traditional wire-based systems remain a reliable and practical choice for many users. The best solution depends on your specific needs and circumstances.
So, in summary, no, not all robot mowers need a wire anymore. In fact, our sales have been nearly 100% wire-free mowers since late 2023. The introduction of RTK-GPS technology has provided a wire-free alternative that offers greater flexibility and easier installation. However, wire-based and wire-free systems have their place in the market, and the choice between them should be based on individual circumstances and preferences. As technology evolves, we can expect even more innovative navigation solutions to emerge, making robotic lawn care more accessible and efficient.
Whether you choose a traditional wire-based system or opt for the latest RTK-GPS technology, both options can deliver excellent results in maintaining a beautiful, well-maintained lawn with minimal human intervention.
Some Examples of wired robotic mowers are:
- Ambrogio L250
- Worx Landroid
- And many Husqvarna automower models which we don't sell as a brand.
Some examples of RTK Robotic mowers are: