Hot backup switching method and system based on network card detection

A hot backup switching method based on network card detection, comprising the following steps:

• S1:
• driving a first synchronous network card of a slave server device to send a query instruction to a second synchronous network card of a master server device according to a preset time interval, so as to obtain a response packet sent by the second synchronous network card;
• S2:
• determining whether the first synchronous network card obtains a response packet sent by the master server device, if yes, executing S1;
• and if not, sending a query instruction of a working mode to a playback terminal, and executing S3;
• S3:
• determining whether the working mode to the playback terminal belongs to a master mode, if not, the slave server device sending a switching instruction to the playback terminal;
• and if yes, driving the playback terminal to continuously send a plurality of query instructions to the master server device, and executing S4;
• and
• S4:
• determining whether the second synchronous network card responds to the query instructions of the playback terminal, if yes, executing S1, and if not, driving the slave server device to perform hot backup switching;
• wherein the method further comprises a Global Positioning System (GPS) module used for satellite time service, and both the master server device and the slave server device are connected with the GPS module;
• wherein the slave server device comprises the first synchronous network card and a slave server used for connecting with an audio source, the master server device comprises the second synchronous network card and a master server used for connecting with the audio source, the master server and the slave server are connected through the first synchronous network card and the second synchronous network card, and the first synchronous network card and the second synchronous network card are connected with the playback terminal;
• wherein before the step S1, the method further comprises the following steps:
• S01:
• obtaining an electrical signal from the slave server, and querying the current address of the second synchronous network card through the first synchronous network card;
• S02:
• determining whether the first synchronous network card obtains the current address of the second synchronous network card within a preset time period, if yes, driving the GPS module to provide time service for the master server device and the slave server device synchronously, and executing S1;
• and if not, querying the working mode to the playback terminal, and executing S03;
• and
• S03:
• determining whether the working mode of to the playback terminal belongs to a master mode, if not, marking the slave server device as the master server device, and if yes, executing S01.