Millisecond class real-time computer system monitoring apparatus

A technology of computer system and monitoring device, applied in the field of real-time computer system detection
CN101192058AInactive Publication Date: 2008-06-04HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2008-06-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a millisecond grade real-time computer system monitoring device which can judge the running status of a real-time control computer within time in millisecond grade, give alarm and carry out protection in case of abnormality of the computer system, and enable the real-time control system to operate more safely. The invention comprises a standard time clock square wave generating circuit, a waveform frequency sorting circuit, a shift circuit, a latch circuit and a system running heartbeat signal detection circuit for detecting operation of the real-time computer system, wherein the standard time clock square wave generating circuit is connected with the waveform frequency sorting circuit which is connected with a shift register, the shift register is connected with the latch circuit, the real-time computer system detection circuit is connected with the shift register, and the latch circuit is also connected with a six freedom degrees motion simulator protection loop. The invention can be applicable to detect normal operating status of the real-time computer system and drive a protective device to carry out protection in case of system abnormality.
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Description

(1) Technical field

[0001] The invention relates to the field of real-time computer system detection, in particular to a detection and monitoring device for detecting the operation of a real-time computer system. (2) Background technology

[0002] At present, most of the industrial control CPUs have monitoring watchdog timers, but most of them are used in non-real-time systems and the general timing period is between 1-255s. Even if it is a dedicated timer, the timing period is basically about 30ms. This type of monitoring watchdog is mainly used for the protection of a single-system computer, and most of the protection methods are re-initialization programs. In a real-time control system with a high sampling and control cycle, the initialization program will bring danger to the system, and 30ms means that the system is in an open-loop state for a long time, which cannot guarantee the safe operation of the system.

[0003] The six-degree-of-freedom motion simulator is a sim...

Claims

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