Self-diagnostic method and device for communication of nuclear safety level DCS system
A DCS system, nuclear safety technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problem of source data failures that cannot be identified, and achieve the effect of generating and accurate self-diagnosis
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[0006] In order to solve the technical problem that the source data cannot be identified in the communication process between the redundant channels of the existing DCS system, the present invention provides a self-diagnosis method and device for nuclear safety DCS system communication, which can use periodic superposition and / or decremented heartbeat signal for accurate self-diagnosis of transmitted data
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[0048] Such as figure 1 As shown, the present embodiment provides a nuclear safety level DCS system (Digital Instrument Control System, English full name Digital Control System), the DCS system includes a first channel 100, a second channel 200, the first channel 100 and the second channel 200 Mutually constitute redundant design, and can transmit data mutually; Wherein, first channel 100 is provided with first configuration software 110, platform software 120, and second channel 200 is provided with second configuration software 210, platform software 220; Platform software 120 and the platform software 220 are the same platform, and the first configuration software 110 and the second configuration software 210 can respectively set a heartbeat signal generation module and / or a heartbeat signal analysis module. In order to make those skilled in the art understand this embodiment more easily, the first channel 110 is used as the sending channel below, and the second channel 200...
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The invention belongs to the technical field of nuclear safety level communication. In order to solve the technical problem that failures in source data cannot be identified in redundant channel-to-channel communication in existing DCS systems,, The invention provides a self-diagnostic method and device for communication of a nuclear safety level DCS system. The method comprises the following steps: a transmission channel generates a periodic superposition and / or a periodic decreasing heartbeat signal; a data signal to be transmitted each period is transmitted together with the periodic superposition and / or the periodic decreasing heartbeat signal in turn; a heartbeat signal corresponding to the periodic superposition and / or the periodic decreasing of the current cycle of the data signal is analyzed, and it is determined whether the periodic superposition and / or the periodic decreasing of the current cycle of the heartbeat signal meets a predetermined requirement, and self-diagnosis isperformed on the communication of the nuclear safety level DCS system; Accordingly, the transmitted data can be accurately self-diagnosed by employing periodic superimposed and / or decreasing heartbeat signals.
Description
technical field [0001] The invention relates to the technical field of nuclear safety level communication, in particular to a self-diagnosis method and device for nuclear safety level DCS system communication. Background technique [0002] The digital control system (Digital Control System, referred to as DCS) used in nuclear power plants is usually equipped with redundant channels for safety and stability considerations, and the communication between redundant channels needs to be self-diagnosed; The self-diagnosis method is CRC self-diagnosis. [0003] However, the inventor found in the process of implementing the present invention that: in the implementation process of the communication between the redundant channels of the above-mentioned DCS system using the CRC self-diagnosis method, when the CRC is packaged, if the source data fails, it cannot be identified. [0004] In order to solve the technical problems in the above CRC self-diagnosis implementation scheme, an ea...
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IPC IPC(8): H04L12/26
CPCH04L43/10
Inventor 江国进李明利孙永滨白涛张春雷高超马建新张智慧谢逸钦李刚莫昌瑜吴彬张杰