Sensors commonly used in industrial robots

In the field of industrial automation, machines need sensors to provide the necessary information to perform the relevant operations correctly. Robots are now using a number of sensors to improve their adaptability. For example, there are many cobots that integrate torque sensors and cameras to ensure a better view of the operation and ensure the safety of the work area.

Sensors commonly used in industrial robots

Sensors commonly used in industrial robots

2D vision sensors

2D vision is basically a camera that can perform a variety of tasks. From detecting moving objects to positioning parts on conveyor belts and more. 2D vision has been in the market for a long time now, and it occupies a certain share. Many smart cameras can detect parts and assist the robot in determining the orientation of the part, so that the robot can adjust its movements appropriately based on the information it receives.

3D vision sensors

Compared to two-dimensional vision, three-dimensional vision is a skill that has only recently emerged. A 3D vision system must have two cameras at different angles or use a laser scanner. The third dimension of the target is detected in this way. Similarly, there are many applications that use 3D vision skills. For example, part pick-and-place, using 3D vision skills to detect objects and create 3D images, dissecting and selecting the best picking method.

If the vision sensor gives the robot eyes, then the force/torque sensor gives the robot a sense of touch. The robot uses a force/torque sensor to sense the force of the end actuator. In most cases, the force/torque sensor is located between the robot and the fixture, so that all forces that react to the fixture are monitored by the robot.

With the force/torque sensor, the application of such as installation, manual guidance, teaching, force restraint and so on can be completed.

Bump detection sensor

There are a variety of different ways to use this sensor. The main use of these sensors is to provide a safe working environment for workers, and it is most necessary for cobots to use them. Some sensors can sense pressure through a soft surface through a tactile recognition system, and if the pressure is perceived, it will send a signal to the robot to restrain or stop the robot's movement.

Some sensors can also be built directly into the robot. Some companies respond with accelerometers, while others use electric currents. In both cases, when the robot senses an abnormal force, it triggers an imminent abort, and then ensures safety. But until the bot aborts, you'll still be hit by it. Therefore, the safest environment is one where there is no risk of collision at all, and this is the task of this sensor.

In order for industrial robots to collaborate with humans, the first step is to find ways to ensure worker safety. These sensors can be used in a variety of ways, from cameras to lasers, with the intent of just one to inform the robot of what is going on around it. Some safety systems can be set up so that the robot will automatically slow down when someone is present in a specific area/space, and the robot will stop the operation if the person continues to approach.

The simplest example is a laser safety sensor on an elevator door. When the laser detects an obstacle, the door immediately aborts and reverses to prevent bumps. The same is true for most safety sensors in the robotics industry.

Part Detection Sensors

In a part picking application, (assuming there is no vision system), you have no way of knowing whether the robot gripper has picked up the part correctly. The application of part inspection can be thought of as a reaction to the orientation of the gripper you supply. For example, if the gripper misses a part, the system detects the mistake and repeats the operation to ensure that the part is gripped.

Other sensors

There are also many sensors on the market that are suitable for different applications. For example, weld tracing sensors, etc.

Tactile sensors are also becoming more and more popular. This type of sensor is usually mounted on the gripper to detect and sense what the object is grasping. The sensor can usually detect the force and derive the force dispersion, and then know the exact direction of the target, allowing you to control the direction of the grip and the grip force of the end performer. There are also tactile sensors that can detect changes in heat.

Ultimately, sensors are the key components to complete software intelligence. Without these sensors, many complex operations would not be possible. Not only do they perform complex operations, but they also ensure that these operations can be well controlled as they are carried out.

Sensors commonly used in industrial robots

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