JPH02168136A - Field data gathering apparatus - Google Patents

Abstract

PURPOSE:To improve the efficiency of maintenance check in a plant by providing functions for storing the place of installation of an apparatus beforehand, computing an optimum check-tour course by an access operation of an input device and displaying the result of computation for guidance. CONSTITUTION:Vibration or an acceleration signal given from a rotary apparatus is converted into an electric signal by a detector 1 and it is inputted to a measurement processing element 5 of the main body 2 of a data collecting apparatus. While the inputted signal is displayed directly in a display unit 3 in this processing element 5, inputted raw data are stored and recorded temporarily in a data storage element 6 therein, an FFT computation is executed by a microcomputer incorporated therein and the result of operation or an FFT waveform is outputted to the display unit 3. In the storage element 6, the result of computation can also be stored and recorded in addition to the raw data on the vibration, and data obtained on sequential check places are recorded and stored. These operations of measurement, computation and display are executed by an input device 4. Besides, a check place decision processing element 7 selects an optimum check-tour course from prescribed check places and the result of selection is displayed on the display unit 3.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a data collection device that collects data on the operating status of one piece of equipment, such as the number of vibrations per rotation, temperature, etc. The present invention relates to a portable on-site data collection device that patrols and measures equipment on a rotating basis.

(Conventional technology) Plant facilities are equipped with many rotating machines that play important roles, including the rotating machines of turbine generators in thermal nuclear power plants, and monitoring these machines is essential for maintaining plant safety. , which occupies a large proportion of the many operation and maintenance inspections.

In order to detect abnormalities in rotating equipment at an early stage for safety reasons, power generation plants have traditionally collected vibration data or acceleration data from the equipment on a regular basis and analyzed the data based on changes in vibration amplitude and frequency spectrum distribution. While comparing the values, we regularly monitor signs of abnormality and investigate the cause.

Data collection is generally carried out by maintenance personnel during periodic inspections during operation of the power plant.

(Problem M to be solved by the invention) However, there are many target rotating devices in one plant, and even one round inspection is a considerable burden on maintenance personnel. Moreover, since the rotating equipment is not concentrated in one location, but is spread out over a wide area within the plant, it has traditionally been up to humans to decide how to circulate the equipment efficiently and without waste. Ta.

Therefore, there have been problems such as individual differences in the itinerary and, as a result, wasted time during maintenance and inspection. Particularly in nuclear power plants, it is necessary to shorten the time spent on site from the perspective of reducing radiation exposure.

An object of the present invention is to solve the above-mentioned problems, reduce the burden on maintenance and inspection personnel, and provide a data collection device for efficient patrol inspection.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve this object, the present invention provides a display section of a portable data collection device that can be freely rotated around the site. Move to the first location. The system is equipped with a message display function that selects the next optimal location and gives instructions on where to go, allowing maintenance and inspection personnel to make accurate decisions without hesitation.

The patrol inspection points are not necessarily all inspected in one day, and due to interruptions during breaks due to two-person shifts, and the occurrence of non-inspected points due to maintenance and inspection plans, etc., the patrol course to be inspected is Often cannot be fixed.

The present invention is capable of appropriately providing guidance display in response to changes in the above-mentioned conditions.

(Function) Next, we will explain the function of the guidance display function, which is a feature of the present invention. This function is common to the inspection location determination processing unit that performs arithmetic processing built in the data collection device and the part related to vibration data measurement. , and its functions are achieved by a display unit and an input device.

The inspection location determination processing unit stores in advance all inspection location information in the plant, such as installation location information for each floor within the facility and walking distance information between each inspection location. It has a built-in program that calculates the total route distance from the start point to the end point by specifying the end point, and selects the shortest course from among them.

This program allows you to enter your current location when you want to start an inspection, or when you want to move to the next location while an inspection is in progress. By inputting from Alff, an optimal tour course is calculated and guidance is provided on the display.

(Example) An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.

In addition to the configuration of the detector 1 involved in vibration measurement, the measurement processing unit 5 that temporarily stores or analyzes input data from the detector, and the data storage unit 6 that temporarily stores data, it also provides guidance to maintenance and inspection personnel about inspection locations. A related inspection location determination processing section 7 and a display section 3 as a common function. Input device 4
It is made up of.

Vibration or acceleration signals emitted from the rotating equipment are converted into electrical signals by the detector 1 and input to the measurement processing section 5 of the data collection device main body 2.

This measurement processing section 5 directly transmits the input signal to the display section 3.
In addition to displaying the input raw data in the data storage section 6, it also has the function of temporarily storing and recording the input raw data, performing FFT calculations using the built-in microcomputer, and outputting the calculation results or FFT waveforms to the display section 6. .

In addition to the raw vibration data, the data storage section 6 can also store and record the above calculation results, and sequentially records and stores data at inspection locations. These measurement methods.

The data analysis calculation means and data display means are operated using the keyboard of the human power device 4.

In addition to the measurement functions related to data collection mentioned above, this device is equipped with an inspection location guidance function.

The inspection location determination processing unit 7 has the function of selecting an optimal patrol course from the predetermined inspection locations, displaying the result on the display device 3, and showing a DH inspection route to the maintenance inspector.

Next, the operation of the inspection location guidance function will be explained using an example. FIG. 2 is a flowchart showing the processing steps from determining the optimum inspection route in the 1-inspection location determination processing unit 7 to displaying guidance on the 1-indication unit 3.

In Fig. 2, as inspection location information, information on the distance between inspection locations is input and recorded in Table 1 for all target locations in advance (SL, S2). As the installation location information, enter area information indicating where the facility is located, such as the building, each floor, or outdoors within the facility, and section information indicating the position within the area. In this example, the inspection location is designated by location symbol A.

In B, C..., the area information is shown by the building base and each floor, and the division information is shown by the zone name, but the information is not limited to this.1 For example, the location code is the equipment number to be inspected.2
The area information can be expressed as room code 1 section information using room number symbols, etc. In short, it is sufficient to use the divisions and symbols that are easiest to judge in each plant.

In Table 2, walking distance information between all the inspection locations listed above is input. This distance represents the actual walking line of the maintenance and inspection personnel, and is not a straight line distance on a plane.

Among the stored tables, first call up table 1 (S3) and select the location to be inspected this time.

When limiting the inspection points, or if there is equipment that should be excluded from inspection due to plant circumstances, it is excluded from table 1 and only the points to be inspected are limited (S4 to S5). This also applies to locations that have already been inspected, and will be excluded once all measurement items have been completed at the inspection location.

If there are no locations to exclude, naturally all inspection locations will be targeted. In this way, table l is rewritten to a table limited to only the actual target locations. The specific operating procedure will be described later using a simple example.

Next, input the starting point to start the inspection and the point to return to after finishing the inspection (end point).86) Call up all the inspection locations targeted this time from Table 1, and go through all the inspection locations on the way from the starting point to the ending point. Assemble a combination of courses (S
7). If there are n locations on the way, the total number of courses that can be assembled is nP
It is created in n ways.

Call table 2 according to the assembled course S8
), Add the inspection location information for each course and calculate the total walking distance for each course (59),
Furthermore, the calculation results are compared and the one with the shortest distance is selected from all the courses (SIO, 5ll). From the course selected in this way, a route starting from the starting point is determined, and the next place's place symbol 1 area 1 section is called up from table 1 (512), and the guide is displayed on display section 3 (S13).

The inspection location guidance function explained below will be further explained by giving a simple specific example. Figure 3 shows inspection locations and distances between inspection locations. In this diagram, the easiest way is to finish inspection at point A, inspect points B, C, and D, and then return to point E.
Let's take the case of t as an example.

The course and distance from point A to point E is A+B4C→D
→E=6 A→B→O-+C→E=6 A-DC-+B→D→E=5 A-DC-+D-48→E=7 ADD→B-+C→E=6 A→D- There are six possibilities: +C→B→E=8. When the conditions that point A is the starting point and point E is the ending point are inputted using the input device 4, all possible courses from point A to point E are assembled from the table 1 of location information stored in the inspection location determination processing section 7. Create a street course. Next, the total distance for each of the six courses is added from Table 2 stored as distance information, and the total distance for each course is compared and calculated to select a course that is the shortest distance.

In this example, the shortest course is A→C→B→D→
E=5 is selected, and it is determined that the first inspection location is 6 points, and a guide is displayed on the display device 3.

FIG. 4 shows an example of symbolically representing the next destination location based on the embodiment of FIG.

In Section 3v4, we will further explain the case in which point D is excluded. In this case, there are two courses: A→BnCnE and A→CAB→E, and the shortest course calculated in the same manner as described above is.

A-+B→C-)E. In this case, the next inspection location will be 8 points, which is different from the 0 point.

Next, an embodiment of the present invention at the time of maintenance and inspection will be described with reference to the flowchart of FIG.

This flowchart shows the operating procedure when a maintenance inspector performs an inspection, and the X mark in the figure indicates the processing function of the inspection location processing section 7.

First, before starting the inspection, select all the devices to be inspected from among all target devices. If there is a device to be excluded from the current inspection by calling all the devices from the input device 4 and man-machine operation from all the devices called to the display device 3, only that device is excluded as not subject to inspection. As a result, only the input and selected equipment is stored in the inspection location determination processing section 7, and the optimum course is selected according to these conditions.

The maintenance inspector then inputs the current position, which is the starting point, and the ending point position using the input device 4 using the man-machine. When the initial inspection begins, it is generally located in an office or control room. two\
The inspection location determination processing section 7 calculates and determines the shortest course from the current location as the starting point to the ending point from the previously stored target equipment installation location, and displays the first destination location on the display section 3.

The maintenance inspector confirms this display and moves to the first designated inspection location. Measure all the specified items given to the target equipment using this method. All measurement items are displayed on the display section 3 by inputting a measurement mode from the input device 3, and all data collection is performed according to this display. When data collection for all items at that location is completed, the inspection location determination processing unit 7 excludes all inspection locations from the course determination target as completed locations, and determines whether there are any remaining inspection locations.

If there are remaining uninspected locations, the next inspection location will be displayed as a guide. If the inspection is to be carried out continuously using a push rod, the inspection will be continued by moving to the next designated location. However, if the inspection is temporarily interrupted due to a break or a shift, and the inspection is temporarily removed from the site, the interruption procedure will be carried out. I do.

The interruption procedure is performed by inputting from the input device 3 the starting point as the current location and the ending point as the return location such as an office.

In this case, there is no intermediate route, so only the end point is displayed as the destination.

When restarting, the current position will be different from when continuing and due to interruption, so when restarting, a new current position will be input again. When all the inspections are completed by repeating the above-mentioned inspection operations in this manner, a completion message is displayed on the display section 3 upon determination that all inspection locations have been completed, and the series of maintenance and inspection operations is completed.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible not only to shorten the on-site work time during maintenance inspections, but also to prevent mistakes such as missed inspections, and to reduce individual differences and burdens on maintenance inspectors.
This is effective in improving the efficiency of in-plant maintenance inspections.

[Brief explanation of the drawing]

Fig. 1 is a schematic block diagram showing the configuration of a device showing an embodiment of the present invention, Fig. 2 is a flowchart showing the processing procedure for selecting the optimum course, and Fig. 3 is an example of an inspection location course for determining the optimum course. FIG. 4 is a plan view showing an example of the guide display based on FIG. 2, and FIG. 5 is a flowchart showing a method of using the embodiment of FIG. 1. 1 - Detector 2 - Data collection device main body 3 Display unit 4 - Input device 7 - Inspection location judgment processing department representative Patent attorney Nori Chika Ken

Claims (1)

[Claims] Sequential maintenance is performed at multiple locations within a facility for a data collection device that is equipped with a data collection device that collects data on the status of equipment, a display device that displays collected data, and an input device that performs input operations during data collection. The present invention includes an inspection location determination processing unit having a function of storing the installation location of the equipment in advance, calculating an optimal inspection tour course by calling the input device, and displaying the result as guidance when performing an inspection. An on-site data collection device featuring: