| 摘要 |
An aid system for the visually impaired or blind includes a first tag positionable on an object and having a first receiver/transmitter that receives an interrogation and transmits a data signal containing an identification code, a user interface device for a user associated to a second tag having a second receiver/transmitter that transmits a data signal containing an identification code of the user interface device and receives a data signal; a local receiver detecting a location of the first and second tags, and a control unit communicating with the local receiver and storing data, wherein the data signals contain: from the tag to the receiver, the identification code; from the receiver to the control unit, the identification code and the location of the first and second tags; and from the control unit to the user interface device, the location and identification code of the first tag. |
