Release date: 2015-04-16
What if I walk in a strange city and get lost? Scientists at the University of Hanover in Germany have developed the first "human satellite navigation" device that emits a stimulus signal by binding the electrodes on the legs, "telling" the user in which direction to take.
According to the British "Daily Telegraph" reported on April 12, the device stimulates the sartorius muscle by electric impulses. The sartorius muscle extends from the outside of the thigh to the inside of the knee, which is the slender thigh muscle that bends the leg. When an electrical pulse signal is received, the sartorius muscle is stimulated to produce an upward contraction, as if the leg is gently pulled in one direction. Whether to go left or right depends on whether the electrical signal stimulates the left or right leg.
In the test, the researchers used a mobile phone to send a Bluetooth signal to the electrodes, successfully guiding student volunteers through a park in Hanover. They hope that the device will be connected to the GPS in the future so that the destination can be programmed.
According to Max Fever of the University of Hanover, this "human satellite navigation" device can be used for sports, to control and divert crowds in crowded places, or to guide firefighters through fire-stricken buildings. “For example, in sports, it can guide long-distance runners to different jogging trainings on different days to add more change and fun.†Pfeiffer said, “It can also help lost old people find their way home. â€
The college student volunteers who tested the navigation device said that the weak current allowed them to know the direction change in the subconscious, and it would not affect the stride or gait, but some volunteers experienced a strange tingling sensation. .
There are also concerns that if the direction of advancement is not determined by humans, they may be led to walk through the puddle or inadvertently step on the person sitting on the ground.
However, the researchers hope that people who use this "human satellite navigation" device will no longer need to keep looking down on the phone so they can focus more on their surroundings.
Source: China Science and Technology Network - Technology Daily
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