Connection device based on industrial personal computer and VPN

The invention relates to the technical field of remote control, in particular to a connection device based on an industrial personal computer and a VPN, which comprises an MCU processor, a 485 communication module, a wireless communication module, a DC/DC power conversion module, a USB to serial port, a data isolation module, an SIM card module, an upper computer and a server, wherein the MCU processor is connected with the industrial control host through the 485 communication module and is connected with the data communication isolation module through a serial port, and the data communicationisolation module is connected with the wireless communication module, is connected with an external power supply through the DC/DC power supply module and is connected with the upper computer througha USB serial port. Data interaction is carried out between the wireless communication module and the server or between the wireless communication module and two places, the industrial 485 communication protocol is connected w