Humanoid robot safety around people

When a humanoid robot over a metre tall walks among visitors, the organiser's first question is: is it safe? The answer is yes, but only under clear conditions. Humanoid robots of the current generation are not certified for close contact with people like collaborative industrial machines, so they are deployed at a distance and under the supervision of an operator. In this article we take a sober look at the real risks, safety features and rules that make deploying a robot among people safe.

Why the safety question is justified

A humanoid robot is a physical machine with its own weight, drive and moving limbs. Even though it looks friendly, it is a device moving in a public space full of people, including children. Safety is therefore not a formality but a basic condition of every deployment.

The technical literature distinguishes several levels of safety for humanoids. The physical level concerns possible injury on contact, the robot falling or an object falling. The cyber level concerns remote control, where the communication channel between the robot and the operator may be vulnerable. With responsible deployment both levels can be managed, but they must not be underestimated.

Real risks: an expert breakdown

The most common risk with humanoid robots is loss of stability. A bipedal robot balances on two legs and in an unpredictable environment, on an uneven surface or after an impact it can slip or fall. Falls are the most frequent cause of viral robot failures at public demonstrations.

The second risk is unexpected contact. A robot with arms and a weight of tens of kilograms can brush against a person who approaches from behind or from the side while it is moving. The third risk is teleoperation itself: the robot's movement may not exactly match the operator's intention due to signal delay, imprecise motion mapping or human error. That is why the emphasis is on a safe distance and a controlled space.

• Loss of stability and a fall, especially on an uneven or slippery surface.
• Unexpected contact with a person within reach of the robot's arms.
• Delay or imprecision during teleoperation.
• Cyber risk of remote control being misused.

Safety features of the robots

Modern humanoid robots have built-in features that reduce the risks. These include an emergency stop function that switches the robot off immediately, sensors for detecting obstacles and a limit on movement speed. The manufacturer Unitree recommends keeping a safe distance during operation.

Expectations need to be precise, though. Robots such as the Unitree G1 or H1 are not factory-certified as collaborative robots under industrial standards such as ISO 10218 or ISO 13482. This means they are not approved for direct body-to-body work with a person, and safety around people is ensured organisationally, meaning through distance, supervision and a defined space.

• Emergency stop for immediate shutdown.
• Sensors for obstacle detection and avoidance.
• Limited movement speed at public demonstrations.
• No industrial collaborative certification, organisational supervision required.

The key role of the operator

The most important safety feature is not technology but a person. At every public deployment of the robot an operator is present who monitors the situation, controls or supervises the movement and stops the robot immediately if necessary. The operator is essentially a living safeguard between the robot and the audience.

The operator also guides the interaction with visitors, makes sure people do not come too close and that the robot works in the prepared space. This is exactly why a humanoid robot at an event cannot operate entirely on its own. Supervision by an experienced operator is a condition of safe operation, not an optional extra.

Rules for safe deployment at an event

In practice, safety is achieved through a combination of technology and organisation. The basis is defining a space for the robot, checking the surface it moves on and clear rules for visitors on how to approach the robot. At demonstrations with children the distance and supervision are increased.

Practical experience shows that with one robot and one operator in a controlled space it is possible to manage eight to ten demonstration blocks per day. The key is preparation: a level and dry surface, a dedicated zone, enough light and a movement scenario rehearsed in advance.

• A dedicated and bounded zone for the robot's movement.
• A level, dry and stable surface without obstacles.
• A safe distance for the audience, increased for children.
• An operator present with access to the emergency stop.

Recommendation: how to approach safety

A realistic view is the best protection. Do not expect the robot to dance safely in a crush or to carry people. Expect a professional demonstration in a prepared space under supervision. That kind of deployment is safe and impressive at the same time.

Before the event, ask for information about the type of robot, its safety features and how the space and supervision will be secured. A serious provider will gladly explain these details and adapt them to your venue. Safety and the wow effect are not mutually exclusive, they just require preparation.

Related service: rental with professional supervision

When you hire a humanoid robot through robotrental.sk, the deployment includes professional preparation and an operator who supervises safe operation throughout the whole event. This means you do not have to deal with the technical or safety details yourself.

You can find an overview of deployment options on the rental types page (/typy-prenajmov). The final price depends on the robot model, type of event, length of deployment and location, plus a refundable deposit, with transport arranged separately. We will prepare a specific quote on request at info@robotrental.sk, where we are also happy to answer questions about safety.

Related service: Rental types