Ten Common Sensors Used on Robots

The commonly used sensors of robots can be divided into internal sensors and external sensors depending on the object to be detected. The internal sensor is mainly used to detect the state of the robot itself (such as the angle between the arms), and is mostly a sensor that detects the position and angle. External sensors are mainly used to detect the environment in which the robot is located (such as what object, how far away from the object, etc.) and the condition (such as whether the grabbed object is slipping). Specifically, there are an object recognition sensor, an object flaw detection sensor, a proximity sensor, a distance sensor, a force sensor, an auditory sensor, and the like.

1. Two-dimensional Vision Sensor

The 2D vision sensor is mainly a camera, which can perform the functions of object motion detection and positioning. The 2D vision sensor has been around for a long time. Many smart cameras can coordinate the action route of the industrial robot according to the received information. The behavior of the robot is adjusted.

2. 3D Vision Sensor

Recently, 3D vision sensors have emerged. The 3D vision system must have two cameras to shoot at different angles, so that the 3D model of the object can be detected and identified. Compared to 2D vision systems, 3D sensors can present things more intuitively.

3. Force Torque Sensor

The force torque sensor is a sensor that allows the robot to know the force. It can monitor the force on the robot arm and guide the next behavior of the robot based on data analysis.

4.  Collision Detection Sensor

The biggest requirement of industrial robots, especially cooperative robots, is safety. To create a safe working environment, robots must be able to identify what is unsafe. The use of a collision sensor allows the robot to understand what it has encountered and send a signal to pause or stop the movement of the robot.

5. Safety Sensor

Unlike the above collision detection sensors, the use of safety sensors allows industrial robots to feel the presence of objects around them, the presence of safety sensors, and to avoid collisions between robots and other objects.

6. Electromagnetic Sensor

Modern magnetic rotation sensors mainly include a four-phase sensor and a single-phase sensor. In the working process, the four-phase differential rotation sensor realizes differential detection by a pair of detecting units, and the other pair realizes differential detection. Thus, the detection capability of the four-phase sensor is four times that of the single element. The two-element single-phase rotation sensor also has its own advantages, that is, compact and reliable, and the output signal is large, can detect low-speed motion, has strong anti-environmental influence and anti-noise ability, and low cost. Therefore, single-phase sensors will also have a good market.

7. Fiber Optic Sensor

Fiber optic sensors are new technologies that have emerged in recent years and can be used to measure a variety of physical quantities, such as sound field, electric field, pressure, temperature, angular velocity, acceleration, etc., as well as measurement tasks that are difficult to accomplish with existing measurement techniques. In a small space, fiber optic sensors show unique capabilities in environments with strong electromagnetic interference and high voltages. At present, there are more than 70 kinds of optical fiber sensors, which are roughly divided into optical fiber self-sensors and sensors using optical fibers.

8. Bionic Sensor

The bio-mimetic sensor is a new type of sensor that uses a new detection principle. It uses immobilized cells, enzymes or other biologically active substances to interact with the transducer to form a sensor. This kind of sensor is a new type of information technology developed by biomedicine and electronics and engineering in recent years. This sensor is characterized by high performance and long life. Among bio-mimetic sensors, bio-sensors are commonly used.

9. Infrared Sensor

The core of the infrared system is an infrared detector. According to the mechanism of detection, it can be divided into two categories: heat detector and photon detector. The heat detector uses the radiant heat effect to cause the temperature of the detector element to rise after receiving the radiant energy, thereby changing the temperature-dependent performance of the detector. Radiation can be detected by detecting a change in one of the properties. In most cases, radiation is detected by thermoelectric changes. When the component receives radiation, causing a physical change in non-electricity, the corresponding change in power can be measured by appropriate transformation.

10. Pressure Sensor

Piezoelectric sensors are mainly used in the measurement of acceleration, pressure and force. A piezoelectric accelerometer is a commonly used accelerometer. It has the characteristics of simple structure, small size, light weight and long service life. Piezoelectric accelerometers have found wide application in vibration and shock measurement of aircraft, automobiles, ships, bridges and buildings. The shape of piezoelectric sensors is particularly unique in the aerospace and aerospace fields.

This article is from Allicdata Electronics Limited. Reprinted need to indicate the source.

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