Double cpu synchronization method and device for security system

A technology of a security system and a synchronization device, which is applied in the field of dual CPU synchronization methods and devices, can solve the problems of unguaranteed processing efficiency, complicated dual CPU soft synchronization design, etc., and achieves simplified program design, high reliability, and small synchronization delay. Effect

Active Publication Date: 2020-05-22
CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the embodiment of the present application provides a dual-CPU synchronization method and device for a security system, which is used to solve the complicated dual-CPU soft synchronization design in the prior art.
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  • Double cpu synchronization method and device for security system
  • Double cpu synchronization method and device for security system
  • Double cpu synchronization method and device for security system

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[0019] The present application is described below based on examples, but the present application is not limited to these examples only. In the following detailed description of the application, some specific details are described in detail. Those skilled in the art can fully understand the present application without the description of these detailed parts. Well-known methods, procedures, procedures, components and circuits have not been described in detail in order to avoid obscuring the essence of this application.

[0020] Furthermore, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0021] Unless clearly required by the context, words such as "including", "comprising" and the like throughout the specification and claims should be construed in an inclusive rather than an exclusive or exhaustive sense; that is, "including but not limited to" meaning.

[0022] In the...

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Abstract

The application provides a dual-CPU synchronization method and device for a security system. The device includes a first logic gate circuit and a second logic gate circuit. An output end of a first CPU is connected to a first input end of the first logic gate circuit and a first input end of the second logic gate circuit. An output end of a second CPU is connected to a second input end of the first logic gate circuit and a second input end of the second logic gate circuit. Output ends of the first logic gate circuit and the second logic gate circuit are connected to an input end of the first CPU and an input end of the second CPU, respectively. The first logic gate circuit and the second logic gate circuit respectively output signals to the dual CPU in response to a synchronization signalfrom the dual CPU so that the dual CPU determines whether to synchronize based on the output signals respectively from the two logic gate circuits. The dual CPU synchronization is completed by directly using hardware semaphores, the synchronization efficiency of the dual CPU is increased, the program design is simplified, the synchronization delay is small, and the reliability is high.

Description

technical field [0001] The application relates to the field of train control systems, and in particular, to a dual-CPU synchronization method and device for a safety system. Background technique [0002] In a safety system where the dual CPUs work synchronously, the dual CPUs need to be synchronized to ensure the synchronization of the dual CPU tasks. The soft synchronization method based on the traditional communication method is difficult to design, relies on a complete set of mathematical algorithms, and takes up certain processing resources, which affects the operating efficiency of the system. In addition, due to the influence of transmission rate and delay, the reliability is low, and the security of data communication needs to be dealt with. SUMMARY OF THE INVENTION [0003] In view of this, embodiments of the present application provide a dual-CPU synchronization method and device for a security system, so as to solve the complex design of dual-CPU soft synchroniz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor 黄彬彬孟庆尧贺龙龙朱雳雄严敢
Owner CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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