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SOE signal acquisition design method for field control station

A technology of on-site control station and signal acquisition, which is applied in the directions of comprehensive factory control, electrical program control, and comprehensive factory control. order, etc.

Pending Publication Date: 2022-07-01
CHINA NUCLEAR CONTROL SYST ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in conventional nuclear power distributed control systems (DCS), the acquisition cycle of conventional data is generally greater than 50 milliseconds, and the analog value is more than 200 milliseconds. The acquisition time resolution is not enough to distinguish the sequence of events, which cannot meet the failure analysis of nuclear power SOE systems. and correctness verification

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  • SOE signal acquisition design method for field control station
  • SOE signal acquisition design method for field control station
  • SOE signal acquisition design method for field control station

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Embodiment Construction

[0064] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] like figure 1 As shown in the present invention, an SOE signal acquisition and design method for an on-site control station of the present invention is characterized in that it includes the following steps:

[0066] step S 1 : The controller checks the GPS clock source signal;

[0067] step S 2 : judge whether the clock source is normal, if not, go back to step S 1 , the next step is performed normally;

[0068] step S 3 : Collect the switch signal every 1 millisecond, and use 1 bit of a 32-bit unsigned integer to store the data;

[0069] Continuously collect 25 data as a group;

[0070] The storage format of the switch is as follows image 3 d1 in :

[0071] 1ms is stored as b0, 2ms is stored as b1, and so on, 32ms is stored as b31.

[0072] Record the seconds and milliseconds at the same time, and s...

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Abstract

The invention belongs to the technical field of SOE (Sequence Of Event) data acquisition and control in an industrial control system, and particularly relates to a field control station SOE signal acquisition design method. According to the method, when an accident occurs in the operation process of the DCS system, the occurrence sequence of each event is truly and correctly recorded through the SOE data with high time resolution, and fault analysis and correctness analysis of the system can be completely met. By means of the method, for the analog quantity in the SOE system, the collection precision can reach 25 milliseconds, and the switching value can reach the resolution of 1 millisecond. When an accident occurs in the operation process of the DCS system, the SOE data with high time resolution can truly and correctly record the occurrence sequence of each event, and fault analysis and correctness analysis of the system can be completely met.

Description

technical field [0001] The invention belongs to the technical field of SOE (Sequence Of Event) data acquisition and control in an industrial control system, in particular to a design method for SOE signal acquisition of a field control station. Background technique [0002] In the nuclear power field control system, SOE data is used to analyze the occurrence time of a series of related events in the control process and the sequence relationship between them. The time resolution of switching events needs to reach 1 millisecond, and the time resolution of analog events needs to reach 25 ms. [0003] In conventional nuclear power distributed control systems (DCS), the acquisition cycle of conventional data is generally greater than 50 milliseconds for switching values ​​and more than 200 milliseconds for analog values. The resolution of acquisition time is not enough to distinguish the sequence of events, which cannot meet the failure analysis of nuclear power SOE systems. and...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCG05B19/4183G05B2219/31282Y02P90/02
Inventor 孙景乐李华龙王冬胡义武梁嘉琳
Owner CHINA NUCLEAR CONTROL SYST ENG