Redundant hot standby control system and control device, redundant hot standby method and computer-readable storage medium

A control device, comprising:

• hardware;
• a plurality of virtual control devices, at least one virtual control device among the plurality of virtual control devices being a main control device, and respective virtual control devices other than the at least one virtual control device serving as the main control device, each respectively corresponding to one virtual control device serving as a main control device in other control devices, and being configured to run a same process as the respectively corresponding one virtual control device serving as the main control device in the other control devices other than its own control device;
• a general-purpose operating system, configured to provide a configuration management program and an interface for managing the plurality of virtual control devices;
• and
• a virtual machine monitor, configured to run on the IPC hardware to allocate hardware resources to the plurality of virtual control devices.

A redundant hot standby method, applicable to an industrial personal computer for running a plurality of virtual control devices, the method comprising:

• periodically sending, via at least one virtual control device among the plurality of virtual control devices acting as a main control device, a heartbeat signal through a control bus of a control system;
• periodically receiving, via the virtual control devices among the plurality of virtual control devices as standby control devices, other than the at least one virtual control device acting as the main control device, the heartbeat signal from a corresponding main control device through the control bus, respectively, wherein the virtual control devices acting as the standby control devices each respectively correspond to at least one virtual control device serving as the main control device on an IPC other than its own IPC in the control system, and being configured to run a same process as the respectively corresponding at least one virtual control device serving as the main control device in the IPC other than its own IPC;
• and
• feeding, upon a respective one of the virtual control devices acting as the standby control devices not receiving the heartbeat signal from its corresponding main control device through the control bus within a time frame, alarm information back to a central control device of the control system through the control bus.