do you know? There are 10 million people with upper limb disability in China and 50 million people in the world. It is a huge crowd. Upper limb disability affects the daily life of this group of people, such as dressing and eating, which hinders their career development. Zorpia is a company that develops robotic bionic hands. With this project, it won the “Best Commercial Price Award†in the 2015 Hardware Innovation Competition jointly organized by Huaqiangxincheng and Xingyun Intelligent Hardware Accelerator.
Its core technology is the self-developed electromechanical sensor, which allows the brain signal to be transmitted to the machine bionic hand, so that the robot can be flexible and active. In this way, the daily life of people with upper limbs has been greatly improved, and they can seek professional development like others.
After 2008, more free holiday limbs began to appear, more representative of the British ilimb hand produced by Blatchford & son, Germany's Steeper company's Bebionic hand. Both prosthetic hands are driven by five micromotors. The fingers outside the thumb have two joints, the base joint is the active joint, and the proximal joint is the driven joint. The motion of the two joints is coupled. Generally speaking, this kind of driving method is under-driven. Imported more free holiday limbs are generally expensive at around 300,000 yuan, and the warranty period is short, usually one year. After the warranty period, the repair price is expensive and the time is long, even the very simple parts are often sold to 10,000 yuan. And it needs to be shipped to foreign countries for maintenance, and the cycle takes at least 3 months. Therefore, even if you can afford it, you can't afford it.
If the neighboring robot bionic hand
If the neighboring robot bionic hand can flexibly grasp, accept and abduct, separate and merge, realize the basic functions of the hand such as: eating, dressing, going to the toilet, opening the door, typing, making a phone call, taking a water cup, a kettle, a business card, etc. It can be combined with each finger movement to achieve grasping, bending, and single-finger movement. It can control the movement of the finger by computer or by myoelectricity.
Innovation 1: The designed finger underacts the micro-mechanism, coupling the movement of the base knuckle of the finger to the movement of the proximal knuckle. And its motion relationship is similar to the motion relationship of the corresponding joint of the human hand;
Innovation point 2: The reflection control algorithm based on the cerebellum model realizes the closed envelope of different objects under the condition of ensuring the clamping force;
Innovation point 3: The finger micro-mechanism has the mechanical self-locking ability of the force closure. Even if the power is lost, the objects held by the bionic hands will not fall;
Innovation point 4: The design of 10 kinds of micro-mechanism finger movement mode basically covers the common action mode of the human hand.
If the neighboring robot bionic hand founder Bai Jinshi
If the vision of the robotic bionic team is to be the best and cheapest bionic hand in the world. The founder said in the hardware innovation contest that the motor of the robotic bionic hand uses a micro-motor imported from Switzerland, so the cost may be somewhat high at present. The next goal is to cooperate with the top domestic motor manufacturers to jointly develop the price of domestic micro-motors. Dropped to 35,000. We all know that there is more than 10,000 cosmetic hands now; 30,000 yuan for a clip with only 2 degrees of freedom, so the bionic hand of 5 degrees of freedom is a subversive price.
In fact, realizing that bionics are expensive, not only the neighboring robots, but also a foreign entrepreneurial team, OpenBionics, founder Joel Gibbard realized that the problem with machine prostheses is that it is too expensive. “This technology can change the lives of many people, but it is too expensive, not affordable, and the government’s medical services are not available, so people can’t get it,†he said in an interview with the Guardian. .
Open Bionics released an open source design for a myoelectric fake hand. The hand weighs less than 300 grams and costs less than $200. Although it is not completely 3D printed, it also includes many 3D printed parts. The remaining non-3D printed parts can be easily purchased from online or local electronics stores. Once these components are fully assembled, you can do something truly incredible.
“We used a new differential mechanism based on the Whiffletree structure that allows the user to independently block the movement of each finger so that only one actuator can perform 144 different gripping actions. The development team said, "This design is based on anthropometric studies of the parametric model of the hand, so it can be easily customized for different patients."
This mechanism allows the user to use a motor on the hand to achieve 16 different combinations of index finger, middle finger, ring finger and little finger, and these combinations can be combined with 9 different positions of the thumb. That is to say, the user can realize different gripping positions of 9&TImes; 16 in a total of 144 with only one motor. This is really an incredible innovation.
The Open Bionics program is to start selling the first product next year. It is estimated that the price of the robot is 2,000 pounds, equivalent to nearly 20,000 yuan. This is much cheaper than similar products on the market. At present, the price of similar products is 20,000 to 50,000 pounds.
It seems that robotic bionic hands also have a lot of competition, but it doesn't matter, there is competition to make progress. The most prominent competitive point is the more flexible features and the cheapest price. Perhaps innovations and breakthroughs in micro-motor selection, finger control mechanisms and 3D printing components will bring better and more economical robot bionics to us.
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