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Secure checking of the exclusivity of an active/passive state of processing units

A technology of safety inspection and active status, applied in the direction of electrical digital data processing, electrical components, error detection/correction, etc., can solve the problem of lack of supplier diversity and achieve the effect of avoiding failures

Inactive Publication Date: 2012-05-02
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] - Lack of diversity among suppliers

Method used

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  • Secure checking of the exclusivity of an active/passive state of processing units
  • Secure checking of the exclusivity of an active/passive state of processing units
  • Secure checking of the exclusivity of an active/passive state of processing units

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0054] As an example to illustrate the prior art, figure 1 An exclusive device for safely checking the active / inactive state of redundant units (1, 2) is shown, which includes:

[0055] -Electromechanical safety relay (3), that is capable of transmitting an exclusive signal (S) related to the exclusivity of the state to at least one safety input (12, 22) integrated in each of the units (1, 2) B ) Communication equipment, in particular, the relay (3) provides energy, which is provided by a voltage source (4) via an electrical signal (S C ) Is transmitted to one and only one of the safety inputs (12, 22),

[0056] -Assuming that each of the safety inputs (12, 22) is an exclusive checking device capable of checking and confirming the state, the safety inputs (12, 22) safely ensure activity / inactivity exclusivity.

[0057] figure 2 Illustrated is a device for safely checking the binary, active / inactive state of redundant units (1, 2), the exclusive device including:

[0058] -At least one...

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PUM

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Abstract

The invention relates to a method and to a device for securely checking the exclusivity of a binary active / passive state of redundant units, wherein said device includes: at least one exclusive communication device of said state capable of transmitting an exclusive signal relating to the exclusivity of said state to at least one checking means integrated within each of said units, said checking means being capable of checking and confirming the exclusivity of said state, characterised in that: each of said redundant units in the active state is capable of transmitting to said exclusive communication device said identity signal; the exclusive communication device is capable of receiving at least one of said identity signals from said redundant units; the exclusive communication signal is capable of producing said exclusive signal from at least one of said identity signals; and the checking means is capable of determining the exclusivity of the state of said unit by reading said exclusive signal.

Description

Technical field [0001] The present invention relates to a device and method for checking the exclusivity of a binary, active / passive state of a redundant processing unit according to the preamble of claims 1 and 11. Background technique [0002] Specifically, the present invention relates to an architecture formed by inherently safe redundant units, especially associated with the safety protection of guided vehicles, and for this to ensure that one and only one of the units is active It is a necessary condition for the correct and safe operation of the vehicle. Specifically, the present invention relates to safely checking the exclusivity of the activity / inactivity status of the unit. [0003] If there are at least two identical units in a single architecture, and each unit can perform the function of another unit, or in other words, can perform the work of another unit, the unit is described as redundant. Furthermore, exclusivity refers to the fact that in the redundant units fo...

Claims

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Application Information

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IPC IPC(8): H04L1/22
CPCG06F11/2025G06F11/006H04L1/22G06F11/2041
Inventor E.舍尼
Owner SIEMENS AG