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Monitoring device

By monitoring the power consumption of the processor to detect task overruns in time-triggered embedded systems, it solves the interference and high cost problems of existing monitoring methods, achieves fast, economical and non-intrusive fault detection, and supports system recovery.

Inactive Publication Date: 2010-03-31
UNIVERSITY OF LEICESTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a custom hardware platform is still required and its attendant cost

Method used

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Embodiment Construction

[0048] The present invention provides an apparatus and method for passively monitoring a processor to detect abnormal behavior.

[0049] In a particular embodiment of the invention, the target processor includes a TTC system. In a TTC system, a task is executed periodically or once within its scheduled processing time or deadline. Such tasks are non-preemptive, meaning that once started they run until completed. This type of system can be implemented in different architectures, such as a hyperloop architecture or a timer-based architecture.

[0050] In a timer-based architecture as employed in the embodiments of the invention described below, an Interrupt Service Routine (ISR) is triggered periodically (typically at each clock cycle interval) to update the timing information for all tasks ( i.e. count down to the moment they should run). The ISR also executes the tasks that should run in that particular clock cycle interval.

[0051] As far as power consumption of such emb...

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Abstract

The invention relates to a monitoring device for a processor comprising a means for monitoring the power consumption of the processor and a means for analysing the power consumption to detect abnormaloperation of the processor.

Description

technical field [0001] The invention relates to a monitoring device. In particular, but not exclusively, the invention relates to a monitoring device suitable for detecting task overruns in time-triggered embedded systems. Background technique [0002] Embedded processors are ubiquitous: they form the core components of a large number of everyday objects (cars, airplanes, medical equipment, factory systems, mobile phones, DVD players, music players, microwave ovens, toys, etc.). In some cases, multiple embedded processors may be employed, each for a particular function. For example, a typical modern car may contain around fifty embedded processors. [0003] In applications where predictable behavior is an important consideration (such as in automotive systems, aerospace systems, medical systems, industrial systems, and in many electronics and white goods), it is critical to use a reliable system that Operate in a highly predictable manner. This is important for safety re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/30G06F1/32
CPCG06F9/4887G06F11/30Y02B60/144G06F1/3203Y02D10/00
Inventor 迈克尔·约瑟夫·庞特陈锦亮
Owner UNIVERSITY OF LEICESTER
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