Identity identifiable double-master arbitration mechanism security system
A security system and identity recognition technology, applied in the field of dual-principal arbitration mechanism security systems, can solve problems such as inability to judge, affect system availability and security, interruptions, and of course dual-standby situations may also occur, so as to ensure uniqueness Effect
Active Publication Date: 2016-06-15
CASCO SIGNAL
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Problems solved by technology
The existing situation is to negotiate their respective roles through communication between the two devices. Under normal circumstances, only the main system outputs externally, and the backup system does not output externally. However, it is inevitable that both devices think that they are the main system (such as All communication between the two is interrupted. Of course, a dual-standby situation may also occur, but this situation will only affect the availability of the system and not affect the security. Therefore, only the dual-master mode is considered here. For the dual-master mode make improvements)
The dual-master output will make it impossible for the device connected to it to judge that the output of that device is correct, resulting in unpredictable results
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0034] like figure 1 As shown, a dual-master arbitration mechanism security system with identity recognition includes a redundant subsystem 1, a third-party arbitration device 2, and a third device 3, and the redundant subsystem 1 includes mutually redundant first The device 11 and the second device 12, the first device 11 and the second device 12 both have unique IDs, the third-party arbitration device 2 is connected to the first device 11 and the second ...
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The invention relates to an identity identifiable double-master arbitration mechanism security system. The system comprises a redundant subsystem, a third party arbitration device and a third device; the redundant subsystem comprises a first device and a second device which are in a mutual redundant relation; both the first device and the second device own unique ID identities; the third party arbitration device is respectively connected with the first device and the second device; the third device is in communication connection with the host device of the redundant subsystem; the device in the redundant subsystem as the host sends own ID identity information to the third party arbitration device; the third party arbitration device only replies the ID identity of one device in a cycle; the host device fuses the received information replied by the third party arbitration device in own to-be-sent data and sends the data to the third device in communication connection with the host device. Compared with the prior art, the system provided by the invention has the advantages of ensuring the uniqueness of the output valid data.
Description
technical field [0001] The invention relates to the field of rail transit signals, in particular to a dual-master arbitration mechanism safety system with identity recognition. Background technique [0002] In rail transit, two sets of equipment are usually required for redundant hot backup, and there is a master-backup relationship between the two sets of equipment. The existing situation is to negotiate their respective roles through communication between the two devices. Under normal circumstances, only the main system outputs externally, and the backup system does not output externally. However, it is inevitable that both devices think that they are the main system (such as All communication between the two is interrupted. Of course, a dual-standby situation may also occur, but this situation will only affect the availability of the system and not affect the security. Therefore, only the dual-master mode is considered here. For the dual-master mode make improvements). ...
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IPC IPC(8): H04L1/22
CPCH04L1/22Y02P90/02
Inventor 陈宜航周庭梁王建涛方圆周宇恒傅李育倪磊磊刘晓男
Owner CASCO SIGNAL