German Alba Diagnostics sensor, Alba Diagnostics model, Alba Diagnostics price

Alba Diagnostics sensors are used to measure the robot's own position. Position sensors can be divided into two types: contact sensors and proximity sensors. These sensors detect the position of the measured object and convert it into a usable output signal. Position sensors can be used to detect position and act as switches reflecting certain states. Unlike displacement sensors, position sensors come in contact and proximity types.

Introduction to Alba Diagnostics sensors

Sensors used in robots to mimic tactile functions. Tactile sense 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 robot development. With the development of microelectronics and the emergence of various organic materials, many development schemes for tactile sensors have been proposed, but most are still in the laboratory stage, with few reaching productization. Tactile sensors can be roughly classified by function into contact sensors, force-torque sensors, pressure sensors, and slip sensors.

Alba Diagnostics sensor classification

Slip sensors are used to determine and measure the slippage of objects when a robot grips or transports them. They are essentially a type of displacement sensor. Based on whether they have sliding direction detection functionality, they can be divided into three categories: non-directional, single-directional, and omni-directional. 1) Non-directional sensors include probe-earpiece types, which consist of sapphire probes, metal buffers, piezoelectric Rochelle salt crystals, and rubber buffers. Sliding causes the probe to vibrate, which is converted into corresponding electrical signals by the Rochelle salt. The buffer reduces noise. 2) Single-directional sensors include drum photoelectric types. Slippage of the gripped object causes the drum to rotate, leading to a photodiode receiving light signals through a code disk (mounted on the drum's circular face). The object's slippage is measured via the drum's rotation angle signal. 3) Omni-directional sensors use metal balls coated with insulating material, forming a grid of conductive and non-conductive areas. When the sensor contacts an object and slips, the ball rotates, causing the conductive and non-conductive areas on the ball's surface to alternately contact electrodes, generating on/off signals. By counting and judging these on/off signals, the magnitude and direction of slippage can be determined. This type of sensor requires high manufacturing precision.

Alba Diagnostics sensor applications

Contact sensors are used to determine whether a robot (mainly limbs) has contacted an external object or to measure the characteristics of the contacted object. Types of contact sensors include micro switches, conductive rubber, carbon-loaded sponge, carbon fiber, and pneumatic reset devices. 1) Micro switch: Composed of a spring and a contact. When the contact touches an external object, it moves away from the base, breaking the signal circuit, thereby detecting contact with the external object. The advantage of this normally closed (always connected when not in contact) micro switch is ease of use and simple structure; the disadvantage is susceptibility 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 thus the current flowing through it. The disadvantage is that drift and hysteresis characteristics vary due to differences in the conductive rubber material formula; the advantage is flexibility. 3) Carbon-loaded sponge type: Features an elastic body made of sponge mounted on a substrate, with carbon-loaded sponge arranged in an array within it. When contacting an object under pressure, the resistance of the carbon-loaded sponge decreases. Measuring the current flowing through the carbon-loaded sponge determines the pressure level. This sensor can also be used as a pressure sensor. Advantages include simple structure, good elasticity, and ease of use. Disadvantages are that uniformity of carbon distribution directly affects measurement results, and recovery after pressure is poor. 4) Carbon fiber type: Uses carbon fiber as the top layer, a substrate as the bottom layer, and urethane with metal electrodes in between. When contacting an external object, the carbon fiber is compressed and conducts electricity upon contact with the electrode. The advantage is good flexibility, allowing installation on curved surfaces of mechanical arms, but hysteresis is significant. 5) Pneumatic reset type: Features a flexible insulating surface that deforms under pressure and uses compressed air for reset power when contact is lost. When contacting an external object, its internal elastic bubble (beryllium copper foil) contacts the lower touch point to conduct electricity. Advantages include good flexibility and high reliability, but a compressed air source is required.

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