Method for remote vehicle diagnostics and device

A method for remote vehicle diagnostics, applicable to a vehicle connector, the method comprising:

• activating a user datagram protocol (UDP) service, receiving a UDP data packet broadcasted by a vehicle and carrying an IP address of the vehicle, encapsulating the UDP data packet broadcasted by the vehicle into a third data packet, and transmitting the third data packet to a device connector through remote communication;
• wherein the device connector converts the third data packet into the UDP data packet of the vehicle, broadcasts the UDP data packet of the vehicle, and activates a TCP server identical to a TCP server of the vehicle;
• wherein a diagnostic device receives the UDP data packet of the vehicle and creates a TCP client to connect with the TCP server of the device connector;
• receiving a notification of the device connector and creating a TCP client to connect with the TCP server of the vehicle;
• receiving a first data packet transmitted by the device connector through the remote communication, the first data packet being obtained by encapsulating a transmission control protocol (TCP) data packet transmitted by the diagnostic device and received by the device connector in a TCP communication manner;
• converting the first data packet into a TCP diagnostics instruction data packet and transmitting the TCP diagnostics instruction data packet to the vehicle;
• and
• receiving, based on TCP communication, a TCP diagnostics response data packet returned by the vehicle according to the TCP diagnostics instruction data packet, encapsulating the TCP diagnostics response data packet into a second data packet, and transmitting the second data packet to the device connector through the remote communication;
• wherein the device connector converts the second data packet into the TCP diagnostics response data packet and transmits the TCP diagnostics response data packet to the diagnostic device;
• wherein the diagnostic device obtains a diagnostics result by analyzing and processing the TCP diagnostics response data packet and presents the diagnostics result to a user.

A device connector, comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor;

• the one or more programs comprising instructions configured to:
• receive a third data packet transmitted by a vehicle connector, wherein the third data packet is obtained by encapsulating a user datagram protocol (UDP) data packet broadcasted by a vehicle and received by the vehicle connector, the UDP data packet of the vehicle carries an IP address of the vehicle;
• convert the third data packet into the UDP data packet of the vehicle;
• broadcast the UDP data packet of the vehicle;
• activate a TCP server identical to a TCP server of the vehicle, wherein a diagnostic device is configured to receive the UDP data packet of the vehicle and create a TCP client to connect with the TCP server of the device connector;
• notify the vehicle connector to create a TCP client to connect with the TCP server of the vehicle;
• receive a transmission control protocol (TCP) data packet of the diagnostic device in a TCP communication manner, encapsulate the TCP data packet into a first data packet, and transmit the first data packet to the vehicle connector through remote communication;
• wherein the vehicle connector is configured to convert the first data packet received into a TCP diagnostics instruction data packet and transmit the TCP diagnostics instruction data packet to the vehicle;
• wherein the vehicle connector is configured to receive, based on TCP communication, a TCP diagnostics response data packet returned by the vehicle according to the TCP diagnostics instruction data packet, encapsulate the TCP diagnostics response data packet into a second data packet, and transmit the second data packet through the remote communication;
• and
• convert the second data packet received into the TCP diagnostics response data packet and transmit the TCP diagnostics response data packet to the diagnostic device;
• wherein the diagnostic device is configured to obtain a diagnostics result by analyzing and processing the TCP diagnostics response data packet and present the diagnostics result to a user.

A vehicle connector, comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor;

• the one or more programs comprising instructions configured to:
• activate a user datagram protocol (UDP) service, and receive a UDP data packet broadcasted by a vehicle and carrying an IP address of the vehicle, encapsulate the UDP data packet broadcasted by the vehicle into a third data packet, and transmit the third data packet to a device connector through the remote communication;
• wherein the device connector is configured to convert the third data packet into the UDP data packet of the vehicle, broadcast the UDP data packet of the vehicle, and activate a TCP server identical to a TCP server of the vehicle;
• wherein a diagnostic device is configured to receive the UDP data packet of the vehicle and create a TCP client to connect with the TCP server of the device connector;
• receive a notification of the device connector and create a TCP client to connect with the TCP server of the vehicle;
• receive a first data packet transmitted by the device connector through the remote communication, the first data packet being obtained by encapsulating a transmission control protocol (TCP) data packet transmitted by the diagnostic device and received by the device connector in a TCP communication manner;
• convert the first data packet into a TCP diagnostics instruction data packet and transmit the TCP diagnostics instruction data packet to the vehicle;
• and
• receive, based on TCP communication, a TCP diagnostics response data packet returned by the vehicle according to the TCP diagnostics instruction data packet, encapsulate the TCP diagnostics response data packet into a second data packet, and transmit the second data packet to the device connector through the remote communication;
• wherein the device connector is configured to convert the second data packet into the TCP diagnostics response data packet and transmit the TCP diagnostics response data packet to the diagnostic device;
• wherein the diagnostic device is configured to obtain a diagnostics result by analyzing and processing the TCP diagnostics response data packet and present the diagnostics result to a user.