ABSTRACT
The threshold of detection is the minimum intensity of a signal to be detected by human sense of touch. Touch is a great challenge in virtual reality research. Virtual reality systems are nothing but telepresence systems where the remote environment is a digital simulation, so it can benefit from the haptic technology developed for remote manipulation. The tactile and force information people daily get from their hands in the real world is hard to provide with one single technology. Many projects can be found in literature in which vibro-tactile technology is used to transmit haptic information in different areas. The automotive industry is also benefiting from vibration technology to create warning systems for drivers. Cadillac, for example, has a system of vibro-tactile actuators in the seat that warn the driver of possible road hazards, which are collected through a system of radar, ultrasonic, and vision sensors.
