German CEMB sensors CEMB models CEMB prices

CEMB sensors are used to measure the robot's own position. Position sensors can be divided into two types: contact sensors and proximity sensors. Sensors that can sense the position of the measured object and convert it into a usable output signal. It can sense the position of the measured object and convert it into a usable output signal. Position sensors can be used to detect position, reflect switches in certain states, and unlike displacement sensors, position sensors have two types: contact and proximity.

CEMB sensor introduction

Sensors used in robots to mimic tactile functions. Tactile sensation is an important sensory function when humans directly interact with the external environment. Developing tactile sensors that meet requirements is one of the key technologies in robotics development. With the advancement of microelectronics technology and the emergence of various organic materials, numerous research proposals for tactile sensors have been put forward, but most remain at the laboratory stage, with few reaching commercialization. Tactile sensors can generally be classified by function into contact sensors, force-torque sensors, pressure sensors, and slip sensors.

CEMB sensor classification

Slip sensors are used to determine and measure slippage generated by objects during grasping or handling by robots. They are essentially displacement sensors. Based on whether they have directional detection capabilities, they can be categorized into three types: non-directional, unidirectional, and omnidirectional. 1) Non-directional sensors include probe earphone-style designs, consisting of sapphire probes, metal buffers, piezoelectric Rochelle salt crystals, and rubber buffers. During sliding, the probe vibrates, which is converted into corresponding electrical signals by the Rochelle salt. The buffer reduces noise. 2) Unidirectional sensors include drum photoelectric types, where slippage of the grasped object causes the drum to rotate, leading to photodiodes receiving light signals transmitted through a code disk (mounted on the circular surface of the drum). By analyzing the rotational angle signal of the drum, the object's slippage is measured. 3) Omnidirectional sensors use metal balls coated with insulating material and arranged in a grid pattern of conductive and non-conductive areas. When the sensor contacts an object and generates slippage, the ball rotates, causing alternating contact between conductive and non-conductive areas on its surface and electrodes, producing on-off signals. Counting and analyzing these signals allows measurement of the magnitude and direction of slippage. This type of sensor requires high manufacturing precision.

CEMB sensor applications

Contact sensors are used to determine whether a robot (mainly limbs) has come into contact with external objects or to measure characteristics of the contacted object. Contact sensors include microswitches, conductive rubber, carbon-impregnated foam, carbon fiber, pneumatic reset devices, etc. 1) Microswitches: Composed of springs and contacts. When the contact touches an external object, it moves away from the base plate, breaking the signal circuit, thus detecting contact with the external object. These normally closed (always connected when not in contact) microswitches offer ease of use and simple structure but are prone to mechanical oscillation and contact oxidation. 2) Conductive rubber type: Uses conductive rubber as the sensitive element. When the contact presses against an external object, it compresses the conductive rubber, changing its resistance and altering the current flowing through it. A drawback is inconsistent drift and hysteresis due to variations in conductive rubber formulations, while its advantage lies in flexibility. 3) Carbon-impregnated foam type: Features an elastic body made of foam mounted on a substrate, with carbon-impregnated foam arranged in an array within the foam. Upon compression from contacting an object, the resistance of the carbon-impregnated foam decreases; measuring the current flow through it determines the degree of compression. This sensor can also serve as a pressure sensor. Advantages include simplicity, good elasticity, and ease of use, though uneven carbon distribution affects measurement accuracy and recovery after compression. 4) Carbon fiber type: Consists of a top layer of carbon fiber, a bottom layer of substrate, and intermediate layers of polyurethane and metal electrodes. When contacting external objects, the carbon fiber compresses and makes contact with the electrodes, enabling conductivity. Its advantages include excellent flexibility, suitable for installation on curved surfaces of robotic arms, though it exhibits significant hysteresis. 5) Pneumatic reset type: Features a flexible insulating surface that deforms under pressure and uses compressed air as the resetting mechanism upon disengagement. When in contact with external objects, internal elastic bubbles (beryllium copper foil) touch lower contacts, enabling conductivity. Benefits include good flexibility and high reliability, though it requires a compressed air source.

Weidou Intelligent Technology specializes in selling German CEMB sensors, CEMB proximity sensors, CEMB distance sensors, CEMB vision sensors, CEMB displacement sensors, CEMB torque sensors, CEMB speed sensors, CEMB photoelectric sensors, CEMB position sensors, CEMB angle sensors, CEMB tactile sensors, CEMB temperature sensors, CEMB pressure sensors, CEMB flow sensors, CEMB level sensors, CEMB motion sensors, CEMB process sensors, all original imports from Germany. Welcome inquiries and orders from users.