Universal sensor self-diagnosis device and diagnosis method therefor

Abstract

The present invention relates to a universal sensor self-diagnosis device and to a diagnosis method therefor. In more detail, the device of the present invention includes: a sensor signal input unit for receiving a sensor signal from at least one sensor; an input data processing unit for processing the received sensor signal from the sensor signal input unit as a value available for a diagnosis device; a modeling unit for calculating a diagnosis modeling value by modeling data processed by the input data processing unit; a memory for storing a reference modeling value for the sensor signal of the sensor, which is modeled in advance when the sensor is in a normal state, and a failure type determining unit for determining a failure type of the sensor; a failure diagnosis unit for diagnosing a failure of a corresponding sensor by assessing the degree of correlation between the diagnosis modeling value and a reference modeling value of the corresponding sensor stored in the memory; and a failure type determining unit for determining a failure type of the corresponding sensor by assessing the degree of correlation between the diagnosis modeling value and the reference modeling value using the failure type determining data if it is determined by the failure diagnosis unit that there is a failure in the corresponding sensor.

Description

technical field [0001] The present invention relates to a self-diagnostic device for a general-purpose sensor, and more particularly, to a self-diagnostic device and method for a general-purpose sensor capable of simulating a sensor by receiving an initial normal input signal from the sensor (here, simulating includes simulating coefficient, type and various variables), and then compare the diagnostic analog value of the sensor with the normal analog output value to determine the presence / absence of failure and the type of failure of a specific sensor, and to be able to identify the failure of the corresponding sensor by notifying the user of the failure of the sensor when the sensor fails Prevent accidents from happening so as to ensure the stability and reliability of the system containing the sensor. Background technique [0002] The present invention relates to a self-diagnosing device for a general sensor and a diagnosing method thereof. [0003] In the case of large s...

AI Technical Summary

Problems solved by technology

[0007] If a sensor in charge of such an important function outputs an inaccurate signal due to a failure and its abnormality and this failure state is not recognized, each device may continue to malfunction, which may cause a huge economic loss

[0008] However, in the related field, due to the lack of a system that automatically determines and reports the presence / absence of a sensor failure and the type of failure, the failure of the sensor may not be easily grasped, so the equipment using the sensor may malfunction and cause huge economic losses

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