Methods for managing liquefied natural gas (lng) tanking safety based on location matching and internet of things systems thereof

A method for managing liquefied natural gas (LNG) tanking safety based on location matching, wherein the method includes:

• step 1:
• perceiving and acquiring, by an LNG distributed energy intelligent terminal, terminal operation information, generating a request for tanking, and sending the request to an LNG distributed energy management platform;
• step 2:
• obtaining, by the LNG distributed energy management platform, vehicle information of an LNG tanker after receiving the request, generating a task plan for tanking and sending the task plan to the LNG tanker and the LNG distributed energy intelligent terminal respectively;
• wherein the step 2 specifically includes:
• obtaining, by the LNG distributed energy management platform, vehicle information of an LNG tanker currently in communication with the LNG distributed energy management platform after receiving the request and location information of the LNG distributed energy intelligent terminal, the vehicle information including a tank number, vehicle location information, and vehicle speed information;
• obtaining a tank number and vehicle location information of an LNG tanker with a shortest transportation time from the LNG distributed energy intelligent terminal according to a shortest time matching principle, generating the task plan for tanking and sending the task plan to the LNG tanker and the LNG distributed energy intelligent terminal respectively;
• step 3:
• the LNG tanker driving to a location of the LNG distributed energy intelligent terminal according to the task plan, and the LNG distributed energy management platform performing real-time tracking and monitoring on a driving path of the LNG tanker;
• wherein the LNG distributed energy management platform performing the real-time tracking and monitoring on a driving path of the LNG tanker specifically includes:
• pre-planning, by the LNG distributed energy management platform, a path for tanking for the LNG tanker according to the vehicle location information of the LNG tanker and the location of the LNG distributed energy intelligent terminal;
• selecting an inertial reference system as a reference, setting a center of coordinates at a center of the LNG tanker, and constructing driving coordinates of the LNG tanker according to the vehicle location information and vehicle speed information of the LNG tanker;
• determining an attitude angle and direction information of the LNG tanker based on the driving coordinates of the LNG tanker, dividing a total gravitational acceleration of the LNG tanker into several components, and obtaining a displacement range of the LNG tanker by adopting an accumulating linear acceleration manner, calculating a directional angle value of the LNG tanker, and introducing measured acceleration components into the driving coordinates to infer a driving direction of the LNG tanker;
• analyzing and obtaining a driving path of the LNG tanker according to the driving direction and the vehicle location information of the LNG tanker, and matching a pre-planned path for the tanking and the driving path of the LNG tanker, and issuing a path deviation alarm to the LNG tanker if the two paths do not match;
• and
• step 4:
• initiating, by the LNG tanker, a request for matching location after arriving at the location of the LNG distributed energy intelligent terminal, completing a two-way location matching authentication with the LNG distributed energy intelligent terminal through the LNG distributed energy management platform, and performing tanking for the LNG distributed energy intelligent terminal;
• wherein the two-way location matching authentication includes:
• for performing the tanking, sending, by the LNG tanker, request information for tanking and vehicle location information of the LNG tanker corresponding to the LNG distributed energy intelligent terminal to the LNG distributed energy management platform;
• sending, by the LNG distributed energy intelligent terminal, request information for tanking corresponding to the LNG tanker number and the location information of the LNG distributed energy intelligent terminal to the LNG distributed energy management platform;
• performing, by the LNG distributed energy management platform, information matching according to the task plan and issuing an instruction for tanking to the LNG tanker and the LNG distributed energy intelligent terminal respectively if the matching succeeds;
• if the matching fails, sending, by the LNG distributed energy management platform, an alarm to a platform manager;
• and
• after receiving the instruction, opening, by the LNG tanker and the LNG distributed energy intelligent terminal, valves for the tanking respectively.