KR101761898B1 - Method for analyzing progress of meter and auto-correcting - Google Patents

Abstract

A trend analysis and automatic correction method of a measuring instrument is disclosed. Receiving a measurement value from a measurement device corresponding to a slot board in advance; Calculating a measurement error of the measuring instrument using the input measured value by the slot board; Controlling the automatic panel to automatically correct the measuring instrument through the corresponding slot board when the measurement error is out of the tolerance range allowed by the manufacturer of the measuring instrument; Performing a transition analysis of a measurement error calculated by the automation panel in the slot board when the measurement error does not deviate from an allowable tolerance range allowed by the manufacturer of the measuring instrument; And the automatic panel controls the automatic calibration of the instrument through the corresponding slot board according to the result of the transition analysis.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of analyzing a moving object,

More particularly, the present invention relates to a method for analyzing and calibrating an all-in-one multifunction meter predictive diagnostic apparatus, and more particularly, The present invention relates to a method of analyzing a trend of various measuring instruments and an automatic correction method using the same.

Periodic facilities such as plants and power plants are configured to monitor in real time whether equipment is operating normally.

Therefore, measuring instruments for measuring voltage, current, resistance, fluid pressure, etc. are installed all over the facilities of large plants and power plants, and it is possible to grasp in real time whether abnormality occurs in each process through the measuring machine. To take immediate action.

However, these instruments must be replaced for long-term use or corrected as needed. The error of the measured value gradually increases at the time of long-term use, and accurate measurement may not be performed.

Numerous instrument gauges are always on and running. Managing these instruments and correcting or replacing them in a timely manner is a very difficult and challenging task.

In the past, a field supervisor has performed on-site verification for each measuring instrument in a pair of two to perform calibration or replacement of the measuring instrument. However, the on-site verification of such measuring instruments requires a lot of manpower, and also places considerable burden on the calibration time and costs.

In particular, when checking on-site of the measuring instrument, the instrument is separated from the instrument to confirm whether it is faulty, and the error of the measuring instrument is confirmed by the subjective judgment of the field personnel. And because each instrument has different equipment for error judgment, it is not possible to check various kinds of measuring instruments at the same time.

In addition, it is not a matter of judging whether a measurement error has occurred in a large number of measuring instruments in advance, and instead of performing a calibration or replacement of measuring instruments in which measurement errors have already occurred, the monitoring system of the equipment is considerably loopholes It is a fact that it is occurring.

Thus, there is a need for means for predicting measurement errors of the measuring instrument and for managing the calibration and replacement of the measuring instrument efficiently.

10-2015-0035081 10-1029016

It is an object of the present invention to provide a trend analysis and automatic correction method of a measuring instrument.

According to an aspect of the present invention, there is provided a method of analyzing and automatically analyzing metrology equipment, the method comprising the steps of: receiving a measurement value from a measurement device corresponding to a slot board in advance; Calculating a measurement error of the measuring instrument using the input measured value by the slot board; Controlling the automatic panel to automatically correct the measuring instrument through the corresponding slot board when the measurement error is out of the tolerance range allowed by the manufacturer of the measuring instrument; Performing a transition analysis of a measurement error calculated by the automation panel in the slot board when the measurement error does not deviate from an allowable tolerance range allowed by the manufacturer of the measuring instrument; And controlling the automatic panel to automatically correct the measuring instrument through the slot board according to the result of the transition analysis.

Here, before the step of receiving the measurement value from the measurement device corresponding to the slot board, the near-field communication tag transmits the ID of the measurement device from the previously-corresponding measurement device by NFC communication the final correction information, the final correction information, the final correction date, the final correction time, and the correctable range, and stores the stored ID, the final correction information, the final correction date, To < / RTI >

The slot board may be configured to include at least one of a current slot card, a frequency slot card, a resistance slot card, an RTD slot card, a pressure slot card, and a HART slot card.

The step of calculating the measurement error of the measuring instrument using the measured value may be configured to calculate the measurement error by comparing the standard value and the measured value measured by the measuring instrument.

In the case where the measurement error is not out of the tolerance range allowed by the manufacturer of the measuring instrument as a result of the calculation, the step of performing the transition analysis of the measurement error calculated by the automation panel in the slot board, And if the future measurement error is predicted to exceed the tolerance of the measurement device, the measurement error of the measurement device is predicted by performing the transition analysis from the past measurement error to the current measurement error to predict the future measurement error, To be automatically corrected in advance.

According to the above-described trend analysis and automatic correction method of the measuring instrument, each extension slot board is mounted for each instrument, and measurement errors of various instruments are simultaneously judged, thereby simplifying the field inspecting equipment, Efforts and costs can be saved.

In addition, it is possible to detect and correct the measurement error of the measuring device even when the measuring device is not separated from the facility, thereby improving the inspection efficiency of the measuring device.

Particularly, since it is configured to perform the trend analysis by recording the measurement error according to the time flow of the measuring instrument, there is an effect that the possibility of error can be predicted and corrected in advance, and prevention of monitoring loopholes There is an effect that can be done.

In addition, it is possible to supply sophisticated air pressure to the pressure transmitter and accurately measure the measurement accuracy and measurement error of the pressure transmitter.

1 is a block diagram of a trend analysis and automatic correction system of a measuring instrument according to the present invention.
2 is an actual front view of an automation panel according to an embodiment of the present invention.
3 is a schematic view showing a mounting state of a slot board according to an embodiment of the present invention.
4 is a configuration diagram of a pressure generator according to an embodiment of the present invention.
5 is an exemplary diagram illustrating a measurement error transition analysis according to an embodiment of the present invention.
6 is a real screen of measurement error and trend analysis according to an embodiment of the present invention.
7 is a flowchart of a trend analysis and automatic correction method of a measuring instrument according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail to the concrete inventive concept. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a trend analysis and automatic correction system of a measuring instrument according to the present invention.

1, a trend analysis and automatic correction system 100 of a measuring instrument according to the present invention includes a slot board 110, an automation panel 120, a near-field communication tag 130 And a pressure generator 140, as shown in FIG.

The trend analysis and automatic correction system 100 of the measuring instrument is a configuration for correction and replacement of the measuring instrument 10 which is always installed and operated in the infrastructure such as a large plant or a power plant. A large-scale plant, a power plant, etc. are always equipped with various measuring instruments 10 in various places of each facility and are always monitored for normal operation. Various measuring instruments 10 such as an ammeter, a pressure gauge, and a resistance gauge are operated at all times.

Here, calibration refers to comparing the reference value of a standard measuring instrument with a higher precision accuracy to the measurement value of an actually used measuring instrument, and thereby calibrating the measuring instrument so that the measured value meets the reference value. If the instrument is out of date or fails to calibrate, it should be replaced.

The trend analysis and automatic correction system 100 of the measuring instrument is configured to measure various measurement values at the same time as well as to determine a measurement error without separating the various measurement instruments 10 from the facility. Particularly, it is possible to analyze the error occurrence trend of the measuring instrument 10 to predict whether or not the measurement error will deviate from the allowable range in the near future, and calibrate the measuring instrument 10 in advance.

Hereinafter, the detailed configuration will be described.

The slot board 110 may be configured to receive a measurement value from a predetermined measuring instrument 10. Here, the measuring instrument 10 may be a device for measuring current, frequency, resistance, resistance, temperature, and the like.

The slot board 110 may be constituted by a current slot card, a frequency slot card, a resistance slot card, a resistance temperature detector (RTD) slot card or the like corresponding to the measuring instrument 10. Further, a pressure slot card 110a and a highway addressable remote transducer (HART) slot card 110b for communication may be further provided.

The slot board 110 may be configured to calculate a measurement error using a measurement value input from the measurement device 10. [ The slot board 110 may be configured to calculate a measurement error by comparing the actual measurement value of the measuring instrument 10 with a predetermined reference value assuming that there is no measurement error.

On the other hand, the slot board 110 may be configured to automatically correct the measuring instrument 10 under the control of the automation panel 120.

The automation panel 120 includes an expansion slot 121, a coupling terminal 122, a display lamp 123, a multifunction meter predictive diagnostic device 124, and a thin film transistor-liquid crystal display (TFT-LCD) . FIG. 2 is a front view of an automation panel according to an embodiment of the present invention, and FIG. 3 illustrates a state in which a slot board is mounted according to an embodiment of the present invention.

Hereinafter, the detailed configuration will be described.

The expansion slot 121 is a structure for mounting the slot board 110 corresponding to each measurement device 10 in advance. The expansion slot 121 may preferably have about ten or so. FIG. 3 illustrates a state in which the expansion slot 121 is mounted, and the expansion slot 121 may be mounted on the rear surface of the automation panel 120.

The connection terminal 122 may be connected to the expansion slot 121 and configured to be connected to the main board 124c of the multifunction instrument predictive diagnostic apparatus 124 as a terminal for data communication with the slot board 110. [

The display lamp 123 may be configured to indicate whether or not the slot board 110 is mounted and the operation state thereof. 3 shows that the display lamp 123 is provided on the front surface of the automation panel 120. [ As shown in FIG. 3, the TFT-LCD 125 may be provided on the front surface of the automation panel 120. The inspection state and the correction state of the measuring instrument 10, and a trend analysis table or graph can be displayed.

The multifunction meter predictive diagnostic apparatus 124 may be configured to include an NFC board 124a, an SD card (secure digital card) 124b, and a main board 124c.

The multifunction meter predictive diagnosis apparatus 124 may be configured to perform a trend analysis of the measurement error calculated in the slot board 110 and to control the measurement apparatus 10 to be automatically corrected according to the performed trend analysis. Here, the trend analysis means analyzing the trend of the measurement error from the past to the present. According to the change trend, it can be configured to predict whether the measurement error will become larger in the near future or out of the allowable range of the measuring instrument 10.

Hereinafter, the detailed configuration will be described.

The NFC board 124a is configured to receive and recognize the identification (ID), final correction information, final correction date, final correction time, and correctable range of the measuring instrument 10 stored in the NFC tag 130 by NFC communication .

Here, the NFC tag 130 receives the ID (identification) of the measuring instrument 10, the final correction information, the final correction date, the final correction time, and the correctable range from the measuring instrument 10 by NFC communication in advance Lt; / RTI > That is, it is possible to recognize the measurement apparatus 10 to be inspected in advance and to provide the recognized information to the NFC board 124a to avoid confusion and recording errors of the measurement apparatus 10 to be checked, It can be used for trend analysis through history.

The SD card 124b may store the measured value measured by the measuring instrument 10, the corresponding standard value corresponding thereto, the measurement error calculated at the slot board 110, and the error rate according to the measurement error.

The main board 124c may be configured to perform the analysis of the measurement error of the measurement device 10 using the data stored in the SD card 124b. And can automatically control the measuring instrument 10 to be calibrated through the slot board 110 according to the trend analysis. Tables 1 to 3 below illustrate the measurement error, the reference value (reference value), and the predetermined tolerance of the measuring instrument 10.

In Table 1, since the reference value is within the tolerance range set by the manufacturer of the measuring instrument 10, correction is unnecessary. In Table 2 or Table 3, the calibration value should be corrected for the measuring instrument 10 because the measurement value before correction deviates from the tolerance range set by the manufacturer.

However, even if the measured value is within the tolerance range at present, it is necessary to perform correction beforehand if it is predicted that the tolerance range will be exceeded in the future.

The pressure generator 140 may be configured to automatically generate and deliver the optimal fine air pressure to the pressure transmitter 10a and provide the air pressure value to the pressure slot board 110a. Conventionally, a rough air pressure is generated and supplied by using a hand pump and it is not easy to control a precise pressure value. However, in the present invention, accurate control is possible through the automatic pressure generator 140. Particularly, it is possible to generate a desired pressure through the pressure slot board 110a of the automation panel 120 and to determine the measurement error of the pressure transmitter 10a.

4 is a configuration diagram of a pressure generator according to an embodiment of the present invention.

4, a portable pressure generator 140 for pressure transmitter correction according to an embodiment of the present invention includes an inlet air module 140a, a filtering module 140b, an in-let pressure module 140c, a drive set regulator 140d, a drive pressure module 140e, an air amplifier 140f, an air tank 140d, An amplifier pressure module 140h, a control supply regulator 140i, a control supply pressure module 140j, an automatic pressure calibration module 140k, a trap (not shown) trap module 140l, a 3-port module 140m, and a HART telepmeter 141. [

Hereinafter, the detailed configuration will be described.

The inlet air module 140a may be configured to suck air supplied from the air line of the automation equipment and to remove moisture using a moisture filter. And may be configured to draw a pressure of about 7 bar.

The filtering module 140b may be configured to remove and purify the moisture of the air sucked in the inlet air module 140a. Since the air in the automation equipment may contain a large amount of water, the water is removed to reduce errors in the pressure measurement.

The inlet pressure module 140c may measure the pressure value of the air sucked in the inlet air module 140a and measure and display the pressure value through an analog gauge. And can be configured to measure approximate air pressure.

The drive set regulator 140d may be configured to manually adjust the supply pressure of air. When the user turns the valve to the left or right, the supply pressure can be roughly adjusted.

The drive pressure module 140e may be configured to measure and display the supply pressure regulated by the drive set regulator 140d via an analog gauge. The user can adjust the supply pressure while viewing the drive pressure module 140e.

The air amplifier 140f may be configured to amplify the air at a ratio of 15: 1 relative to the indicated supply pressure through the drive pressure module 140d. And can be configured to amplify up to about 100 bar at a pressure of 7 bar.

The air tank 140g may be configured to store and receive the amplified air from the air amplifier 140f.

The amplifier pressure module 140h may be configured to measure and display the supply pressure of the air amplified by the air amplifier 140f through an analog gauge. That is, the pressure of the air tank 140g is indicated.

The control supply regulator 140i may be configured to manually adjust the supply pressure measured at the amplifier pressure module 140h. This is a configuration for controlling the supply pressure to be supplied to the outside from the air tank 107 to be supplied.

The control supply pressure module 140j can be configured to display the supply pressure regulated by the control supply regulator 140i via an analogue gauge. That is, the output supply pressure of the air tank 107 is displayed.

The automatic pressure calibration module 140k can be configured to precisely control the manually adjusted supply pressure in the control supply pressure module 140j.

At this time, the automatic pressure calibration module 140k may be configured to precisely control the supply pressure by remote control of the pressure slot board 200a of the automation panel 120. [ The user can remotely control this on the automation panel 120.

That is, the automatic pressure calibration module 140k provides the supply pressure to the pressure slot board 200a mounted on the automation panel 120 via the RS 485 communication, and supplies the supply pressure by the remote control of the pressure slot board 200a And can be configured to precisely control.

The trap module 140l may be configured to remove moisture so that the moisture of the pressure transmitter 10a for pressure measurement of the automation equipment is not adversely influenced.

The three-port module 140m can be connected to a maximum of three pressure transmitters 10a and can be calibrated for up to three pressure transmitters 10a. The three-port module 140m may be configured to supply a supply pressure precisely controlled by the automatic pressure calibration module 140k to the pressure transmitter 10a.

The HART telemeter 141 can be used when the pressure transmitter 10a can not be dismantled and separated from the automation equipment due to the nature of the automation facility.

The HART telemeter 141 can be configured to mount the pressure transmitter 10a without disassembling and disassembling the pressure transmitter 10a in order to be able to communicate with the HART slot board 200b mounted on the automation panel 120 have.

FIG. 5 is an exemplary view of a measurement error transition analysis according to an embodiment of the present invention, and FIG. 6 is a real screen of measurement error and trend analysis according to an exemplary embodiment of the present invention.

Referring to FIG. 5, [A], [B], and [D] indicate that the measurement value is within the tolerance range, and [C] indicates that the measurement value is out of the tolerance range. In case of [C], calibration should be performed.

However, in [B] and [D], it is predicted that the measured value will not exceed the tolerance range in the near future even if the time elapses. In case of [A], it is predicted that the measured value will deviate from the tolerance range in the near future . In this case [A], it can be configured to perform correction in advance.

That is, the main board 124c may store the measurement error calculated by the slot board 110, and may be configured to perform a transition analysis from the past measurement error to the current measurement error to predict a future measurement error. And to automatically correct the measuring instrument 10 in advance when it is predicted that the future measurement error exceeds the tolerance of the measuring instrument 10.

Fig. 6 shows a graph and a table of the trend analysis to be displayed through the TFT-LCD 125. Fig.

7 is a flowchart of a trend analysis and automatic correction method of a measuring instrument according to an embodiment of the present invention.

7, a near-field communication tag 130 transmits an ID (identification) of the measuring instrument 10, final correction information, a final calibration date The final correction time and the correctable range, and provides the stored ID, the final correction information, the final correction date, the final correction time, and the correctable range to the automation panel 120 by NFC communication (S101).

Next, the slot board 110 receives measurement values from the corresponding measurement apparatus 10 (S102). At this time, the slot board 110 may be configured to include at least one of a current slot card, a frequency slot card, a resistance slot card, an RTD slot card, a pressure slot card, and a HART slot card.

Next, the slot board 110 calculates a measurement error of the measuring instrument 10 using the measured value (S103). The slot board 110 may be configured to calculate a measurement error by comparing the standard value and the measurement value measured by the measurement device 10. [

Here, if the measurement error is out of the tolerance range allowed by the manufacturer of the measuring instrument 10, the automatic panel 120 controls the automatic measurement device 10 to be calibrated via the corresponding slot board 110 S104).

If the measurement error does not exceed the permissible tolerance range of the manufacturer of the measuring instrument 10, the automation panel 120 performs a transition analysis of the measurement error calculated at the slot board 110 at step S105.

Here, the measurement error calculated in the slot board 110 is stored, and the future measurement error is predicted by performing a transition analysis from the past measurement error to the current measurement error, And may be configured to automatically correct the measuring instrument 10 in advance when it is predicted that the error will be exceeded.

Next, the automatic panel 120 controls the automatic measurement device 10 to be calibrated through the slot board 110 according to the result of the trend analysis (S106).

It will be understood by those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims will be.

110: Slot board 120: Automation panel
121: Expansion slot 122: Coupling terminal
123: indication lamp
124: Multifunction instrument predictive diagnostic apparatus 124a: NFC board
124b: SD card 124c: main board
125: TFT LCD 130: NFC tag
140: Pressure generator
140a: inlet air module 140b: filtering module
140c: inlet pressure module 140d: drive set regulator
140e: drive pressure module 140f: air amplifier
140g: Air tank 140h: Amplifier pressure module
140i: Control Supply Regulator
140j: Control supply pressure module 140k: Automatic pressure calibration module
140l: Trap module 140m: 3-port module
141: HART Telemeter

Claims (5)

Receiving a measurement value from a measurement device (10) corresponding to a slot board (110) in advance;
Calculating a measurement error of the measuring instrument (10) using the input measured value by the slot board (110);
The automatic panel 120 controls the automatic measurement device 10 to be calibrated through the corresponding slot board 110 when the measurement error is out of the tolerance range allowed by the manufacturer of the measuring instrument 10 step;
If the measurement error does not deviate from the tolerance range allowed by the manufacturer of the measuring instrument 10, the automation panel 120 performs a transition analysis of the measurement error calculated in the slot board 110 step;
And controlling the automatic panel 120 to automatically correct the measuring instrument 10 through the slot board 110 according to a result of the transition analysis,
Before the slot board 110 receives the measurement value from the corresponding measuring instrument 10 in advance,
The near-field communication tag 130 transmits an ID (identification) of the measuring instrument 10, final correction information, a final correction date, a final correction time, Receiving and storing the correctable range, and providing the stored ID, the last corrected information, the last corrected date, the last corrected time and the correctable range to the automation panel 120 by NFC communication,
The step of calculating the measurement error of the measuring instrument 10 using the input measured value by the slot board 110 may include:
A standard value and a measurement value measured by the measuring instrument 10 are compared with each other to calculate a measurement error,
If the measurement error does not deviate from the tolerance range allowed by the manufacturer of the measuring instrument 10, the automation panel 120 performs a transition analysis of the measurement error calculated in the slot board 110 In the step,
A future measurement error is predicted by performing a transition analysis from a past measurement error to a current measurement error to store a measurement error calculated by the slot board 110, Controls to automatically calibrate the measuring instrument 10 in advance when it is predicted that the error is exceeded,
The trend analysis and automatic correction system 100 of the measuring instrument 10 includes a slot board 110, an automation panel 120, a near-field communication tag 130 and a pressure generator 140 , ≪ / RTI >
The pressure generator 140 includes an inlet air module 140a, a filtering module 140b, an inlet pressure module 140c, a drive set regulator, A drive pressure module 140e, an air amplifier 140f, an air tank 140g, an amplifier pressure module 140h, a control supply regulator (not shown) a control supply regulator 140i, a control supply pressure module 140j, an automatic pressure calibration module 140k, a trap module 140l, a 3-port module 140m, , A HART telemeter 141,
The inlet air module 140a sucks air supplied from an air line of the automation equipment, removes moisture using a water filter,
The filtering module 140b removes moisture from the inlet air module 140a and purifies the air,
The inlet pressure module 140c measures the pressure value of the air sucked in the inlet air module 140a and measures and displays the pressure value through an analog gauge,
The drive set regulator 140d manually adjusts the supply pressure of the air,
The drive pressure module 140e measures and displays the supply pressure regulated by the drive set regulator 140d through an analog gauge,
The air amplifier 140f amplifies the air at a ratio of 15: 1 to the supply pressure indicated through the drive pressure module 140d,
The air tank 140g is configured to store and receive air amplified by the air amplifier 140f,
The amplifier pressure module 140h measures and displays the supply pressure of the air amplified by the air amplifier 140f through an analog gauge,
The control supply regulator 140i manually adjusts the supply pressure measured by the amplifier pressure module 140h
The control supply pressure module 140j displays the supply pressure regulated by the control supply regulator 140i through an analog gauge,
The automatic pressure calibration module 140k precisely controls the manually adjusted supply pressure in the control supply pressure module 140j,
The trap module 1401 removes moisture so that the moisture of the pressure transmitter 10a for pressure measurement of the automated equipment is not adversely influenced,
The three-port module 140m is connected to a maximum of three pressure transmitters 10a so that the pressure transmitter 10a can be calibrated,
Characterized in that the HART telemeter (141) is used when the pressure transmitter (10a) can not be disassembled and separated from the automation equipment due to the nature of the automation equipment.
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