Vehicle parallel diagnosis method, apparatus, and system, coordinator, and medium

A vehicle parallel diagnosis system, comprising:

• at least one client, configured to transmit a first diagnostic request message and a second diagnostic request message;
• a diagnostic service coordinator, comprising:
• a non-transitory memory, a processor, and a computer program stored on the non-transitory memory and executable on the processor, the processor configured to execute the program to implement:
• receiving the first diagnostic request message transmitted by the at least one client;
• forwarding, if the diagnostic service coordinator is idle, the first diagnostic request message to a diagnostic server via a target routing controller;
• receiving the second diagnostic request message transmitted by the at least one client;
• detecting a current diagnostic state of the diagnostic server with respect to the first diagnostic request message after the second diagnostic request message is received, the current diagnostic state comprising a completed state and an uncompleted state;
• and
• forwarding, if the current diagnostic state is the completed state, the second diagnostic request message to the diagnostic server via the target routing controller, otherwise controlling, if the current diagnostic state is the uncompleted state, the at least one client to retransmit the second diagnostic request message after a target delay duration until the diagnostic server is in the completed state, and forwarding the second diagnostic request message to the diagnostic server via the target routing controller;
• and
• a diagnostic server, configured to perform a first diagnostic on the at least one client in response to the first diagnostic request message, and perform a second diagnostic on the at least one client in response to the second diagnostic request message, thereby diagnosing a vehicle
• wherein after the target delay duration, and before controlling the at least one client to retransmit the second diagnostic request message, the processor is configured to execute the program to further implement:
• acquiring an accumulated number of retransmissions of the second diagnostic request message;
• and
• determining the target delay duration according to the accumulated number;
• and
• wherein the determining the target delay duration according to the accumulated number comprises:
• determining whether the accumulated number reaches a predetermined number;
• calculating the target delay duration according to the accumulated number when the accumulated number is less than or equal to the predetermined number, and generating a delay queue based on the target delay duration corresponding to each delay when the accumulated number is equal to the predetermined number;
• and
• randomly acquiring the target delay duration from the delay queue when the accumulated number is greater than the predetermined number;
• wherein a calculation formula of the target delay duration is:
• target duration=2N*ΔT,
• wherein N is the accumulated number, and ΔT is a predetermined interval duration.