Vehicle-mounted dispatch terminal device and serial port multiplexing method for vehicle-mounted dispatch terminal device

Abstract

The invention discloses a vehicle-mounted dispatch terminal device and a serial port multiplexing method for the vehicle-mounted dispatch terminal device. The vehicle-mounted dispatch terminal device comprises a 2G module, a processing unit and a serial port, wherein the 2G module comprises a wireless communication module and a serial port communication module; the processing unit is electrically connected with the 2G module through the serial port; the 2G module is used for generating a first virtual serial port and a second virtual serial port from the serial port; the first virtual serial port is used for transmitting 2G network data between the wireless communication module and the processing unit; and the second virtual serial port is used for transmitting conversation data or short message data between the serial port communication module and the processing unit. Through the vehicle-mounted dispatch terminal device, data transmission efficiency is improved, a 2G Internet surfing function and a conversation function do not interfere with each other, and therefore user experience is improved. Moreover, the price of the 2G module is low, so that the manufacturing cost is lowered.

Description

technical field [0001] The invention relates to a vehicle-mounted dispatching terminal device and a serial port multiplexing method of the vehicle-mounted dispatching terminal device. Background technique [0002] At present, in the vehicle-mounted dispatching terminal equipment, the data link must be maintained at all times, and must have the call function at the same time, and cannot conflict. [0003] However, the 2G (second generation mobile communication technology) module is only electrically connected to the processor of the vehicle dispatching terminal equipment through a serial port, so the 2G module can only send 2G network data to the processor through a serial port, and cannot transmit call data or text messages Data, or can only send call data or SMS data to the processor through a serial port, and cannot transmit 2G network data. [0004] Such a data transmission method not only has low data transmission efficiency, but also interferes with each other between ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects in the prior art that the data transmission efficiency of the 2G module of the vehicle-mounted dispatching terminal equipment is low, and the Internet access function and the call function are interfered with each other, thereby reducing the user experience, and providing a Vehicle-mounted dispatching terminal equipment and serial port multiplexing method of vehicle-mounted dispatching terminal equipment

Images