JPH02181667A - Electronic board with deterioration diagnostic function - Google Patents

Abstract

PURPOSE:To estimate a future deterioration state by providing a memory for storing computing element data at every specific interval of time and comparing initial data which is stored in advance with fault data. CONSTITUTION:The data of a computing element 2 is sent to the memory 3 at every specific intervals of time and the initial data and fault data of the computing element 2 are stored previously. The computing element 2 inputs, processes, and outputs an input signal and functions as the electronic board 1. The data can be read out of the memory 3 as necessary and the data of the computing element 2 is compared with the initial data and fault data. Here, past variation in the deterioration state of the computing element 5 is known to estimate a future secular change in the deterioration state and evaluate the rest life. Thus, the future state is estimated based upon the past data to improve the reliability of the electronic board 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to electronic substrates, and particularly to a diagnostic device suitable for grasping aging changes in deterioration state and evaluating remaining life.

[Conventional technology]

Although there are conventional devices that use infrared rays to diagnose the deterioration of electronic boards, as described in Japanese Patent Application Laid-open No. 62-134568, the state of deterioration is mostly determined by visual inspection by experts. The method of judgment was based on human output characteristic test data conducted during periodic inspections.

[Problem to be solved by the invention]

The above-mentioned conventional technology requires the judgment of a skilled person, test data can only be measured during periodic inspections, and the test data is written down on diary #i paper each time, consuming a great deal of effort and time.

Further, the deterioration diagnosis device using infrared rays has a problem in that the device is complicated and is not practical for use with electronic boards that are in operation.

An object of the present invention is to solve these conventional drawbacks and to provide a deterioration diagnosis function in an electronic board so as to be able to evaluate changes over time in the state of deterioration and remaining life.

(Means for Solving the Problem) The above object is achieved by providing a memory in the electronic board to store data of the computing unit at predetermined time intervals, and comparing the data with initial data and failure data of the computing unit.

achieved.

[Effect]

A memory provided in the electronic board stores data of the arithmetic unit along with time changes.

By comparing the stored data with the initial data and failure data of the arithmetic unit, changes in deterioration over time can be determined. Furthermore, since the future state of deterioration can be estimated from the data on aging, it is also possible to evaluate the remaining lifespan.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1 is an electronic board, 2 is an arithmetic unit, and 3 is a memory.

The arithmetic unit 2 takes in input signals, performs arithmetic operations, and outputs the results, and functions as the electronic board 1.

Data from the arithmetic unit is sent and stored in the memory 3 at predetermined time intervals. Data can be retrieved from memory 3 when necessary, and by comparing this data with the initial data of the computing unit and failure data (error level, failure pattern), changes in the status of the computing unit over an hour can be determined, and deterioration diagnosis can be performed. It is effective for

FIG. 2 shows another embodiment.

4 is a memory 1, 5 is a memory 2, and 6 is an arithmetic unit 2.

The memory 2 stores in advance initial data and failure data necessary for diagnosing deterioration of the arithmetic unit. Data from the arithmetic unit is sent to the memory 1 at predetermined time intervals and stored therein, as in the case of FIG. Arithmetic unit 2 6 compares the data in memory 1 and memory 2 to determine the state of deterioration.

An example of determining the state of deterioration is shown in FIG.

The state of deterioration is determined based on the error of the arithmetic unit. The initial data 0% and the error level ±0.5% are stored in the memory 2, and the error of the calculator is stored in the memory 1 every month, and compared with the initial data and error level by the calculator 2. , it is considered normal if it is within the error level. Furthermore, when the time change of the error is approximated by a straight line, the number of months exceeding the error level is calculated, and deterioration is predicted.

According to this embodiment, the degree of deterioration can be predicted based on the error of the arithmetic unit.

In the above embodiment, the memory 1 and the memory 2 are shown as independent columns, but a common memory may be used separately.

〔Effect of the invention〕

According to the present invention, it is possible to evaluate the secular change in the deterioration state of an electronic board and its remaining life, which has a great effect on improving the reliability of the electronic board.

[Brief explanation of the drawing]

FIGS. 1 and 2 are block diagrams showing an embodiment of the present invention, and FIG. 3 is a diagram showing changes in error over time as an example of determining a state of deterioration. 1...Electronic board, 2...Speaker, 3...Memory,
4...Memory 1.5...Memory 2, 6...Arithmetic unit 2゜Figure 1Figure 2

Claims (1)

[Claims] 1. The electronic board is equipped with a memory that stores initial data and failure data necessary for deterioration diagnosis in advance, and a memory that stores computing unit data at predetermined intervals to understand changes in deterioration status over time and to understand the remaining life. An electronic board with a deterioration diagnosis function that enables evaluation.