Automatic switching device for double SIM cards in vehicle positioning terminal

• Main Author: LIANGUI DAI
• Format: Patent
• Language: English
• Published: 17.05.2006
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The utility model relates to an automatic switching device for double SIM cards in a vehicle positioning terminal. The utility model is composed of a GPRS circuit module, a micro-processing controller, a double-card switching circuit, an installing seat for double SIM cards, and a GPS globe satellite positioning and receiving device, wherein the GPRS circuit module is connected to the micro-processing controller through an alarm signal line L1 and a data interface P1, the GPRS circuit module is also connected to the double-card switching circuit and the micro-processing controller through an SIM card information interface P2, the micro-processing controller is respectively connected to the double-card switching circuit and the installing seat for double SIM cards through a control interface P3 and a reset signal line L2, the installing seat for double SIM cards is connected to the double-card switching circuit through an information interface, and the GPS globe satellite positioning and receiving device is connected to the micro-processing controller through a GPS data interface. In the device, two SIM cards are arranged on a GRPS communication facility, thereby, additional international roaming communication expenses are not generated for the GSM/GPRS wireless data communication of the GRPS communication facility when movement is carried out between the inland areas, Hong Kong and Macao.