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Stanford develops new electronic gloves, bringing human like flexible operation to robots

Stanford develops new electronic gloves, bringing human like flexible operation to robots

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original title: Stanford develops new electronic gloves, bringing human like flexible operation to robots

Stanford engineers have developed an electronic glove containing sensors, And it is expected to bring flexibility to robot arms in the future, which human beings believe is ideal

in a paper published in science robotics, Bao Zhenan, an academician of the National Academy of engineering and a professor of chemical engineering at Stanford University, and his team proved that the sensor can allow the robot arm to hold and not crush delicate. It is unusual to add a pad iron under the base to adjust fragile berries and table tennis. Bao Zhenan said that the sensor at the fingertip of the glove can simultaneously simulate two key properties of human flexibility: the intensity and direction of pressure

she said: "this technology helps us move towards the path of bringing robots the perception found in human skin one day in the future."

researchers are perfecting technology to support its automatic control of sensors. However, if it can be achieved, the sensor wearing such gloves will be able to flexibly hold the egg with thumb and index finger, and will not crush or fall off

this electronic hand is designed to simulate the human skin layer and bring us extraordinary flexibility. The outer skin is full of "sensors" (sensory nerves), which can detect pressure, heat and other stimuli

finger and palm "touch sensors" are particularly abundant. This "sensor" can work with a skin sublayer called the spinous layer

the spinous layer in front of the basal layer of the skin is very critical. When our fingers touch an object, the outer layer of the skin will be closer to the spinous layer. The sensory nerve at the top of the spinous layer will be able to perceive a slight touch. More intense pressure will force the outer layer of the skin closer to the spinous layer, triggering more sensory nerves, thereby triggering a stronger sense of touch

but measuring pressure intensity is only a part of the function of spinous layer. This uneven skin sublayer also helps to explain the direction of pressure or shear force. For example, when a finger pushes northward, the south slope of the "hill" in the spine layer will produce a strong signal

for us humans to hold an egg gently but firmly with our thumbs and forefingers, this perception of shear force plays a considerable role. Clementine Boutry and Marc Negre led the development of electronic sensors that mimic this human mechanism. Each sensor on the fingertips of robot gloves consists of three flexible layers. Only businesses that use green packages can sign up. The top and bottom layers are electrically active, and the middle is a rubber insulation layer, which can work together

researchers laid wire grids on each opposite surface and made them rotate vertically to each other to produce a dense array of small sensing pixels. They also make the bottom layer as bumpy as the spines of human skin

the rubber insulator in the middle can simply keep the top and bottom electrodes separated. But this separation is crucial, because the electrodes of 229 building wooden doors and windows close to but not in contact can store electric energy

when the robot finger presses down and pushes the upper electrode towards the bottom, the stored electric energy increases. The "hills" and "valleys" at the bottom provide a way to map the intensity and direction of pressure to vertical GERT points, just like human skin

to test the technology, researchers embedded three-layer sensors into the fingertips of rubber gloves and wore them on robot hands. Their ultimate goal is to embed the sensor directly into the skin like cover of the robot arm

in one experiment, the research team made robot hands wearing electronic gloves gently touch berries (without explosion). They also use sensors to detect the appropriate shear force to hold the table tennis ball (without falling off), and can move and lift the table tennis ball

Bao Zhenan pointed out that through proper programming, the robot hand wearing this tactile glove can perform repetitive tasks, such as picking up eggs from the conveyor belt and putting them into cartons

in addition, this technology can help robot assisted surgery, because accurate touch control is crucial to surgery. But Bao Zhenan's ultimate goal is to develop an advanced glove that can automatically apply appropriate force and safely handle objects without pre programming

she pointed out: "we can program a robot hand, which determines the size of the fixture structure and the labor intensity of the fixture operation. It will explode when it touches the berry. But we still have a long way to go before we can touch and detect it as a berry and enable the robot to pick it up."

source: Yingwei

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