Why can't the same robot be used both indoors and outdoors?

Robot chassis have already been widely adopted across multiple industries, including but not limited to service robots, inspection robots, logistics robots, weed-removal robots, and lawn mowing robots. However, robot chassis face significantly different design requirements and technical challenges in indoor versus outdoor environments. Many customers have asked, “Can a single chassis model support both indoor and outdoor operations?”

In response, our technical team has clearly stated that the requirements for mobile robot chassis in indoor and outdoor environments differ fundamentally. For example: protection rating (IP rating), terrain and obstacle-crossing capabilities, environmental perception and localization, as well as power and battery life.

To provide you with some guidance, I will break down my analysis into the following four areas:

 Protection Rating

Indoor environments (malls, hospitals, factories): Primarily require dust protection and the ability to withstand light splashes;

Outdoor environments (parks, ports, substations): Must be capable of withstanding rain, strong sunlight, dust, and even salt spray.

Terrain and Obstacle-Crossing Capabilities

Indoor environments prioritize stability, while outdoor environments prioritize mobility.

Indoor Chassis: Designed specifically for flat surfaces and confined spaces such as factories and offices, with an emphasis on smooth operation and low noise. In these environments, precise navigation and obstacle avoidance are particularly important.

Outdoor Chassis: Designed to handle rugged terrain, inclement weather, and unpredictable environmental factors such as potholes, slopes, manhole covers, and loose gravel. In these environments, the robot chassis must possess high obstacle-crossing and hill-climbing capabilities.

Environmental Sensing and Localization

In temperature-stable indoor environments, standard electronic components are sufficient. Lightweight materials are typically used to reduce energy consumption and improve mobility efficiency.

Outdoor environments often face extreme temperature challenges, requiring the use of high-strength materials, wide-temperature battery management systems, and high-temperature-resistant cables to effectively withstand the harsh winters of northern regions and the hot summers of southern regions. Additionally, waterproof and dustproof coatings are applied to protect against rain and dust.

Indoor robots generally require lightweight sensors; outdoor robots typically integrate high-power equipment, thus requiring enhanced power output, structural load-bearing capacity, and electromagnetic shielding. If necessary, outdoor chassis must be equipped with vibration-resistant sensor mounting platforms to prevent equipment loosening or signal interference.

Power and Range

Indoor robots typically use wheeled drive systems, such as differential drive or four-wheel drive, enabling 360-degree maneuverability for navigating tight spaces. In contrast, outdoor robots tend to use tracked or multi-wheel drive configurations to enhance traction and obstacle-crossing capabilities. (Outdoor robots may need to travel on muddy, sandy, or sloped terrain, requiring high-torque motors to deliver robust power.)