Device for embedding mobile phone SIM card into RFID reader-writer to realize positioning

The utility model provides a device for embedding a mobile phone SIM card into an RFID reader-writer to realize positioning, and solves the problems the accuracy of a positioning method which adopts a base station cellular technology is very low and the positioning method cannot satisfy the requirement of accurate positioning. The utility model is characterized in that an RFID reader-writer signal interface the signal interface of a digital signal processor are connected and are put in a mobile phone, the I/O port of the digital signal processor is connected with the I/O port of an SIM, and one active or passive RFID tag is placed on a street at intervals. The utility model has the advantages that since the cost of the RFID tag is far lower than that of the base station, the arrangement density of the FRID tags is improved and the positioning accuracy is correspondingly and greatly improved.