{"id":3117,"date":"2026-08-12T06:38:15","date_gmt":"2026-08-11T22:38:15","guid":{"rendered":"http:\/\/www.sangothienphu.com\/blog\/?p=3117"},"modified":"2026-08-12T06:38:15","modified_gmt":"2026-08-11T22:38:15","slug":"what-types-of-sensors-do-amr-robots-use-4b71-7f0d3a","status":"publish","type":"post","link":"http:\/\/www.sangothienphu.com\/blog\/2026\/08\/12\/what-types-of-sensors-do-amr-robots-use-4b71-7f0d3a\/","title":{"rendered":"What types of sensors do AMR robots use?"},"content":{"rendered":"

As a supplier of Autonomous Mobile Robot (AMR) technology, I’ve witnessed firsthand the transformative impact these robots have on various industries. AMR robots are revolutionizing logistics, manufacturing, and warehousing by offering flexible, efficient, and cost – effective solutions for material handling and transportation. At the heart of their functionality are a variety of sensors that enable them to navigate, interact with their environment, and perform tasks autonomously. In this blog, I’ll delve into the different types of sensors used in AMR robots and explain how they contribute to the robots’ overall performance. AMR Robots<\/a><\/p>\n

<\/p>\n

1. LiDAR Sensors<\/h3>\n

LiDAR, which stands for Light Detection and Ranging, is one of the most critical sensors in AMR technology. It works by emitting laser light pulses and measuring the time it takes for the light to bounce back from surrounding objects. This data is then used to create a detailed 3D map of the robot’s environment.<\/p>\n

The high – resolution maps generated by LiDAR sensors allow AMRs to navigate complex environments with precision. They can detect obstacles, such as walls, pallets, and other robots, from a significant distance. This long – range detection capability is crucial for planning optimal routes and avoiding collisions. For example, in a large warehouse with narrow aisles, LiDAR sensors help the AMR to detect the position of shelves and other equipment in real – time, enabling it to move safely and efficiently.<\/p>\n

Moreover, LiDAR sensors are highly accurate and can provide reliable data even in dynamic environments. They can detect small objects and changes in the environment, which is essential for the safe operation of AMRs. For instance, if a worker accidentally drops a tool in the path of an AMR, the LiDAR sensor can quickly detect it and trigger the robot to stop or change its route.<\/p>\n

2. Camera Sensors<\/h3>\n

Camera sensors are another important component of AMR robots. They come in various types, including monocular, stereo, and RGB – D cameras.<\/p>\n

Monocular cameras are simple and cost – effective. They can capture 2D images of the environment, which can be used for tasks such as barcode reading, object recognition, and visual servoing. For example, in a logistics center, AMRs equipped with monocular cameras can read barcodes on packages to identify and sort them accurately.<\/p>\n

Stereo cameras, on the other hand, provide depth information by capturing images from two different viewpoints. This depth perception allows the AMR to better understand the three – dimensional structure of the environment. It can be used for tasks like obstacle avoidance and object grasping. For instance, when an AMR needs to pick up a box from a shelf, the stereo camera can help it determine the exact position and orientation of the box.<\/p>\n

RGB – D cameras combine color (RGB) and depth (D) information. They are very useful for applications that require both visual and geometric information, such as human – robot interaction and 3D mapping. In a collaborative work environment, an AMR with an RGB – D camera can detect the presence and movement of human workers, and adjust its behavior accordingly to ensure safety.<\/p>\n

3. Ultrasonic Sensors<\/h3>\n

Ultrasonic sensors operate on the principle of sound wave propagation. They emit high – frequency sound waves and measure the time it takes for the waves to bounce back from objects. This information is used to calculate the distance between the sensor and the object.<\/p>\n

Ultrasonic sensors are often used for short – range detection, particularly in applications where LiDAR or cameras may not be suitable. For example, they are commonly used for detecting objects in close proximity to the AMR, such as when the robot is docking with a charging station or navigating in tight spaces. They are also relatively inexpensive and easy to integrate into the robot’s design.<\/p>\n

However, ultrasonic sensors have some limitations. They are less accurate than LiDAR sensors, especially in environments with multiple reflections or in the presence of moving objects. Also, their detection range is relatively short, typically up to a few meters.<\/p>\n

4. Infrared Sensors<\/h3>\n

Infrared sensors detect infrared radiation emitted or reflected by objects. They are commonly used for proximity sensing and obstacle detection.<\/p>\n

Infrared proximity sensors can detect the presence of objects within a certain range by measuring the amount of infrared radiation reflected back to the sensor. They are often used in AMRs to detect the edges of platforms, the presence of other robots, or to prevent the robot from colliding with walls.<\/p>\n

Infrared sensors are also used for communication between AMRs. For example, some AMRs use infrared signals to exchange information such as position, speed, and task status with other robots in the vicinity. This enables them to coordinate their movements and work more efficiently as a group.<\/p>\n

5. IMU Sensors<\/h3>\n

An Inertial Measurement Unit (IMU) is a sensor that combines accelerometers, gyroscopes, and sometimes magnetometers. Accelerometers measure the linear acceleration of the robot, while gyroscopes measure the angular velocity. Magnetometers can measure the magnetic field, which can be used to determine the robot’s orientation relative to the Earth’s magnetic field.<\/p>\n

IMUs are essential for the navigation and stability of AMR robots. They provide information about the robot’s motion and orientation in real – time, which is used to calculate the robot’s position and trajectory. For example, when an AMR is moving, the IMU can detect any changes in its acceleration or rotation, allowing the robot’s control system to adjust its speed and direction accordingly.<\/p>\n

In addition, IMUs are used for dead – reckoning, which is a method of estimating the robot’s current position based on its previous position, speed, and direction of motion. Although dead – reckoning has some errors over time, it can be used in combination with other sensors, such as LiDAR and cameras, to improve the overall accuracy of the robot’s navigation.<\/p>\n

6. Force – Torque Sensors<\/h3>\n

Force – torque sensors are used to measure the forces and torques applied to the robot’s end – effector or joints. In the context of AMR robots, they are particularly important for tasks that involve physical interaction with the environment, such as picking and placing objects.<\/p>\n

When an AMR is grasping an object, the force – torque sensor can measure the amount of force applied to the object. This allows the robot to adjust its grip strength to prevent damage to the object. For example, when handling fragile items, the robot can use the force – torque sensor to ensure that it applies just enough force to hold the item securely without breaking it.<\/p>\n

Force – torque sensors are also used for tasks that require precise manipulation, such as assembling parts. They can provide feedback to the robot’s control system, allowing it to make fine adjustments to its movements and ensure accurate assembly.<\/p>\n

Conclusion<\/h3>\n

The sensors used in AMR robots are the key to their ability to operate autonomously and interact with their environment. Each type of sensor has its own unique capabilities and limitations, and by combining multiple sensors, AMRs can achieve a high level of performance and reliability.<\/p>\n

<\/p>\n

As a supplier of AMR robots, we understand the importance of selecting the right sensors for each application. We work closely with our customers to understand their specific requirements and design AMR solutions that are tailored to their needs. Whether it’s a large – scale logistics operation, a manufacturing plant, or a healthcare facility, we have the expertise and technology to provide the best sensor – equipped AMR robots.<\/p>\n

Patrol Robots<\/a> If you’re interested in learning more about our AMR robots and how they can benefit your business, or if you’re ready to discuss a potential purchase, please don’t hesitate to reach out. Our team of experts is always available to answer your questions and guide you through the procurement process.<\/p>\n

References<\/h3>\n