Virtual Reality technology still has many deficiencies in the immersive experience of users, but researchers are trying to solve this problem. At a CHI'17 conference in Denver, a research team from the Hasso-Plattner Institute in Potsdam demonstrated a VR haptic system that allows the user to experience a touch of a wall or a pull in a VR situation through muscle electrical stimulation. The real sense of weight. Research co-author Pedro Lopes said that the team is interested in the reconstruction of the physical sense in the VR context.


Researchers equipped volunteers with a backpack equipped with a medical-grade eight-channel muscle simulator (EMS), controlled by a VR simulator via a USB interface device, and also used a Samsung GearVR headset. Tracker and motion capture system.
When the electrode is connected to the forearm and bicep muscles of volunteers, the device will automatically apply a slight electric shock when touching or lifting some virtual objects, so that the muscles of the volunteers will change and repulsive to the user's hands. Let them feel that they are leaning against the wall or picking up a heavy object.
The team eventually produced two simulators. A simulator reduces the electrical shock intensity of the EMS device, allowing the user to penetrate the simulated object in the VR context by approximately 10 cm, suitable for simulating foam or other soft items. The other simulator uses short EMS pulses that strongly repel the user's hands. They are not allowed to pass through walls or other hard objects in the VR context. The simulator has a stronger impact, but Does not harm the human body.
(Original title: Experience wall crash in VR researchers use electrical stimulation to restore physical touch)
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