JP2020020784A - Method for measuring size of rectangle object - Google Patents

Abstract

To provide a method which can measure a size even in a situation where more than one operator are working and can determine what the operators are measuring, the method also preventing occurrence of measurement errors due to misreading of a scale, for example, clerical errors (copy errors) by humans, or wrong inputs of numerical values to a computer by not using human actions to transfer the measured value of the size.SOLUTION: The method for measuring the size of a rectangle object includes the steps of: measuring the distance between predetermined two points of the rectangle object as a predetermined size of the rectangle object by detecting the positions of the points, using a wireless position detection technique, and transferring the measured value of the predetermined size of the rectangle object to an information processor 100. The wireless position detection technique is preferably a technique which uses an I-GPS (Indoor Global Positioning System).SELECTED DRAWING: Figure 5

Description

  The present invention relates to a method for automatically performing a dimension measurement of a rectangular object by eliminating an information (dimension measurement value) input operation manually performed by an operator.

  Conventionally, various methods are known as methods for measuring the dimensions of a rectangular object (for example, a steel plate (a thick steel plate or a thin steel plate), a slab, a wooden plate, and the like, which is also referred to as a measured object in the present invention). Hereinafter, a thick plate manufacturing process as a part of the steel manufacturing process will be described as an example. It is necessary to accurately measure and record the dimensions (plate width, plate length, plate thickness, etc.) of the plate at the maintenance site of the plate factory as customer-supplied data.

  In the past, these measurements were measured with a measure or micrometer, and the measured values (data) were recorded on the original plate, transcribed to official recording paper, and then manually input to a computer. . However, there is a risk that it is not possible to completely avoid measurement errors due to misreading of the scale, erroneous writing (transfer error) due to human error, erroneous input of numerical values to a computer, and the like. As a countermeasure, in the steel sheet dimension measurement support system of Patent Document 1, the position and orientation of the worker on or around the steel sheet are imaged from above at the timing when the dimensions are input by the dimension measuring device, and the work is performed. The type of measurement (thickness, width, length, etc.) and measurement position are specified based on the position and orientation of the operator, and the dimensions are registered in the information processing device without the worker being aware of the measurement positions and the measurement order. That is being done.

JP 2014-202597 A

  However, according to the method of Patent Document 1, when a plurality of persons perform the dimension measurement work of the steel sheet, or even when the measurement work is not performed, there is a case where an operator other than the dimension measurement worker is around. In such a case, the system may misrecognize and the value measured by the dimension measurer may be registered at a plurality of locations where the worker is present (the measured value of A in FIG. 1 is registered in both A and B). So only one person can work). Further, in the dimension measurement after the gas cutting operation of the thick steel plate, the steel plates are adjacent to each other. At this time, as shown in FIG. 2, the operator can perform dimensional measurement (thickness measurement) without changing the standing position, but move the position of the steel plate to distinguish it at the time of imaging. It is necessary for the operator to move the position (the distance between C and D in FIG. 2 is about 200 mm and can be measured only by moving the hand).

  As a method of solving the above problem, the present inventor automatically measures the dimensions of a rectangular object to be measured using wireless position detection technology without measuring the dimensions by the operator himself, and measures the dimensions. Provide a method of mechanically transmitting values.

The features of the present invention for solving the above-mentioned problems are as follows.
[1] A dimension measurement processing method for a rectangular object,
Using wireless position detection technology, the distance between the two points is measured as a predetermined dimension of the rectangular object by detecting the positions of two predetermined points on the rectangular object, and the measured value of the predetermined dimension of the rectangular object is used as information. A method for measuring dimensions of a rectangular object, wherein the method is transmitted to a processing device.
[2] The method for measuring the dimensions of a rectangular object according to [1], wherein the wireless position detection technology is a technology using an I-GPS (Indoor Global Positioning System).
[3] the rectangular object is a thick plate;
The positions of the predetermined two points are a position of one end and a corresponding other end in the longitudinal direction or the width direction of the thick plate,
The method according to [1] or [2], wherein the predetermined dimension is a plate length or a plate width of the thick plate.
[4] After detecting the entire position of the rectangular object using the wireless position detection technology, the thickness of the rectangular object and the thickness measurement are measured using a wireless thickness measuring device incorporating a radio wave transmitting device. Detecting the position at which the measurement is performed, and transmitting the measured value of the thickness and the position information at which the thickness measurement is performed to the information processing apparatus, [1] to [3]. A method for measuring the dimensions of a rectangular object described.
[5] Selecting a rectangular object to be measured from a plurality of rectangular objects and detecting coordinate information of four corners of the selected rectangular object to be measured using an I-GPS (Indoor Global Positioning System). The method for measuring the dimensions of a rectangular object according to any one of [1] to [4], characterized in that:
[6] The product specification information on the selected rectangular object to be measured is acquired, and the thickness of the rectangular object to be measured is measured based on the product specification information, [5]. Dimension measurement processing method.

  According to the present invention, the worker automatically measures the dimensions of the rectangular object to be measured without using the wireless position detection technology to measure the dimensions, and mechanically transmits the measured values. It is possible to prevent the occurrence of measurement errors due to misreading, misprinting (transferring mistakes) due to human errors, and errors in inputting numerical values to a computer.

FIG. 11 is a diagram illustrating a form of a measurement operation when there are a plurality of workers according to a known technique. It is a figure which shows the form of the measuring operation of the adjacent position in a well-known technique. It is a figure which shows an example of the conventional example of the dimension direction of the width direction of a thick plate, a longitudinal direction, and a thickness direction. It is a figure showing the flow of the conventional dimension measurement processing. It is a figure for explaining the size measurement processing of the present invention. It is a block diagram showing a schematic structure of a size measurement processing system. It is a flowchart which shows a dimension measurement processing flow.

  Measuring a rectangular object, which is a dimension measurement object of the present invention, is an important step for quality assurance in the manufacturing process. The rectangular object refers to an object to be measured for dimensions such as a steel plate (a thick steel plate or a thin steel plate), a slab, and a wooden plate. In the following, a thick plate manufacturing process as a part of the steel manufacturing process will be described as a typical example to which the present invention can be applied. It is not limited to a plate.

  The present invention relates to "technology for detecting the position of an object to be measured (thick plate or the like in a workplace)" and "wireless thickness measurement technology (technology for transmitting numerical values measured by a digital micrometer or the like to a mobile PC or the like using radio waves). )). The present invention is a method of automatically recognizing a measurement position from a positional relationship between a measurement object and a dimension measurement device without an operator indicating a measurement position, and transmitting a thickness measurement value of a thick plate to an information processing apparatus. is there.

  In the position detection of the measurement target, the position information of the measurement target in the workplace is determined using a wireless position detection technique. As a wireless position detection technique, there is a position detection technique using an I-GPS (Indoor Global Positioning System), which is disclosed in, for example, JP-A-2006-109421. In order to actually carry out this method, a ready-made device can be introduced and used.

  Hereinafter, as one mode for carrying out the present invention, a thick plate manufacturing process which is a part of a steel manufacturing process will be described as an example, but the present invention is not limited to the steel manufacturing process.

  In a general thick plate manufacturing process, a slab manufactured by a continuous casting process, which is a preceding process, is heated, hot-rolled, cooled, and then sheared by a shearing machine such as a crop shear, a side shear, or an end shear. To produce planks of the following dimensions. When the board cannot be sheared to a predetermined size in the shearing line (there may be a failure in the measurement by the online shape measuring machine), the thick board is temporarily disconnected from the shearing line and returned to the off-line cutting place. It is carried in, cut into a predetermined size, and then carried into a dimension measuring place (working place) in order to confirm that it has a predetermined size.

FIG. 3 shows an example of a conventional example of the dimension measurement of a thick plate carried into a dimension measuring place (working place) as described above. The board width is obtained by measuring W ₁ and W ₂ , and the board length is obtained by measuring L ₁ and L ₂ . The thickness is measured at a predetermined position based on the product specifications. When measuring 9 points at the maximum, for example, a total of 9 points of 3 points at the front end, 3 points at the center, and 3 points at the tail end (FIG. 3 (See ● A to I).

  Conventionally, as shown in FIG. 4, these are measured with a measure or a micrometer, and the measured values (data) are recorded on an original plate, transcribed to an official sheet, and then manually input to a computer. I was doing. In such a situation, there is a risk that it is impossible to completely avoid measurement errors due to misreading of a scale, erroneous writing (transfer error) due to human error, erroneous input of numerical values to a computer, and the like.

  On the other hand, the dimension measurement processing method of the present invention measures the distance between two points by detecting the positions of two predetermined points on a measurement object (rectangular object such as a thick plate) 10 using wireless position detection technology. This is a method of measuring a predetermined dimension of the object 10 and transmitting a measured value of the predetermined dimension of the measured object 10 to the information processing apparatus 100.

The position information (the position in the workplace) of the measured object 10 according to the present invention is detected based on, for example, the coordinates of the four corners of the measured object 10. Hereinafter, a case where a thick plate is used as the measurement object 10 will be described. As shown in FIG. 5, the I-GPS includes three transmitters (radio wave transmitters) 20 and an I-GPS single sensor (radio wave receiver) 30. The three transmitters 20 and the I-GPS single sensor 30 From the positional relationship described above, the position of the measurement target can be detected based on the principle of triangulation. As shown in FIG. 5, in the present invention, the plate length (L ₁ and L ₂ ) and the plate width (W ₁ and W ₂ ) of the thick plate, which is the object 10, are measured from the coordinates of the four corners ((1) to (4)). ) Can be measured, and the measured value can be transmitted to the information processing apparatus 100. In the measurement of the plate length and the plate width, an accuracy within ± 1 mm is required. In order to achieve the accuracy, it is preferable to apply I-GPS (Indoor Global Positioning System) as described above. Although I-GPS is a technology used indoors in principle, other position detection technologies may be used as long as the above accuracy is satisfied, and the present invention can be applied not only indoors but also outdoors.

  In the method of the present invention, a rectangular object (object to be measured) to be measured may be selected from a large number of rectangular objects. Specifically, for example, first, a rectangular object (measured object 10) to be measured is selected from a plurality of rectangular objects, and the coordinate information of the four corners of the selected rectangular object (measured object 10) is represented by I-. The detection may be performed using a GPS (Indoor Global Positioning System).

In the present invention, as described above, the distance between the two points is measured by detecting the positions of two predetermined points on the measurement object 10 using a wireless position detection technology (for example, a technology using I-GPS). Measured as 10 predetermined dimensions. Specifically, for example, the measurer has a measuring device that can use the wireless position detection technology, and detects the positions of both ends of a predetermined size to be measured on the measurement object 10 to thereby determine the distance between the two points. It can be measured as a predetermined dimension. Then, in the dimension measurement processing method of the present invention, a measurement value of a predetermined dimension of the measurement object 10 is transmitted to the information processing device 100.
Here, the positions of the two predetermined points in the present invention refer to the positions of one end and the other end of the dimension (predetermined dimension) to be measured on the measured object 10. For example, when the measurement object 10 is a thick plate and the dimension to be measured (predetermined dimension) is the length of the thick plate, the positions of the two predetermined points are one end in the longitudinal direction of the thick plate and the corresponding other end. Position. Further, for example, when the measurement object 10 is a thick plate and the dimension to be measured (predetermined dimension) is the width of the thick plate, the positions of the two predetermined points correspond to one end in the width direction of the thick plate. This is the position of the other end.

  Further, the information processing device 100 may be any device that can record the measured value of the above-described measurement object 10 having a predetermined dimension, and may be appropriately selected from various devices such as a mobile PC, a PC, and a tablet terminal according to the application. Can be used. If a tablet terminal is used as the information processing apparatus 100, the worker 60 who measures the thickness can have the information processing apparatus 100.

  As shown in FIG. 5, in a work place, using a wireless position detection technology (for example, a technology using I-GPS), for example, a measurement object (a thick plate or the like) from coordinates of four corners ((1) to (4)). After detecting the entire position of the rectangular object 10), the thickness of the object 10 and the position at which the thickness was measured are detected by using the wireless thickness measuring device 40 incorporating the radio wave transmitting device. Next, the measured value of the thickness of the measurement object 10 and information on the position at which the thickness was measured are transmitted to the information processing apparatus 100. The position information is received by the receiver 101 provided in the information processing device 100.

The wireless thickness measuring device 40 transmits, for example, a thickness value measured by a digital micrometer or the like to the information processing device 100 using a radio wave by a transmitter 41 as a radio wave transmitting device. In addition, since the wireless thickness measuring device 40 includes the I-GPS single sensor 30, the position at which the thickness measurement is performed based on the principle of triangulation is detected from the positional relationship between the three transmitters 20 and the I-GPS single sensor 30. can do. In addition, since the entire position of the measurement object 10 in the workplace is detected before the thickness measurement is performed, it is possible to detect at which part of the entire measurement object 10 the thickness measurement is performed. .
As the wireless thickness measuring device 40, in addition to the digital micrometer described above, a ready-made product that transmits a measured value such as a caliper and an ultrasonic thickness gauge to the information processing device 100 can be used.

When measuring the thickness of the measurement object 10 by the dimension measurement processing method described above, the operator 60 does not indicate which position in the measurement object 10 is being measured, and the measurement object in the work place is not specified. The position at which the measurement was performed can be automatically detected from the positional relationship between 10 and the measuring device. In addition, the measured value of the thickness of the measurement object 10 and information on the position where the thickness measurement is performed are transmitted to the information processing apparatus 100.
Further, measured values such as a plate length and a plate width measured using a wireless position detection technique such as I-GPS are also transmitted to the information processing apparatus 100.
Since the transmitted measurement values and position information do not need to be transcribed or input to a computer, they can be registered in the information processing apparatus 100 without erroneous transcription (transfer error) or error in inputting numerical values to the computer.

The data transmitted to the information processing apparatus 100 may be registered as it is in the information processing apparatus 100, but as shown in FIG. 5, the data is displayed on the display unit 102 such as a result input screen and the worker 60 confirms the data. After that, the information may be registered in the information processing apparatus 100.
In addition, the operator 60 has a terminal (for example, a tablet terminal), transmits the measured data to the terminal, temporarily stores the data, and moves the operator 60 to a distance that can be transmitted to the information processing apparatus 100. At this time, the data may be transmitted from the terminal owned by the worker 60 to the information processing apparatus 100.

  If the transmission distance of the wireless position detection device is short (usually within about 10 to 20 m) and the transmission is not interrupted by the wall of the place where the result input screen is placed, the board measured by I-GPS Data such as the length and the board width may be directly transmitted to the information processing apparatus 100 by wireless communication or the like. By doing so, the operator 60 does not need to carry anything other than the measuring machine.

  As described above, a series of "dimensional measurement", "input of measured value", and "input" operations of a thick plate are completed, and a measurement error due to misreading of a scale or an error due to a human error (transfer error) due to the implementation of the present invention. ) And mistakes in inputting numerical values to a computer can be avoided.

  Next, a preferred embodiment of an application example of the rectangular dimension measurement processing method of the present invention will be described with reference to FIG. FIG. 6 is a block diagram illustrating a schematic configuration of the dimension measurement processing system. Hereinafter, a case where a steel sheet product is used as a rectangular object (measurement object) will be described.

  The dimension measurement processing system 1 shown in FIG. 6 includes an information processing device 100, a terminal device 200 such as a tablet terminal, a plate thickness measurement device (wireless thickness measurement device) 300 using a wireless measurement technology, and a position detection system 400. And is provided.

  The dimension measurement processing system 1 specifies, for example, the position of a steel sheet product (rectangular object) manufactured in a thick plate manufacturing process at a plate factory, and measures the dimensions of the steel sheet product by the dimension measurement processing method of the present invention. After the measured values are transmitted to the information processing device, the dimensional measurement value of the steel sheet product (rectangular object) is compared with the specification information of the steel sheet product (rectangular object), and the steel sheet product falls within the dimensional tolerance range of the specification information. The information is collated, and the collation result and the dimension measurement value are linked and stored in the information processing apparatus 100. By using the stored data, for example, it is possible to confirm whether or not the steel plate product existing at a predetermined position matches the specification of the ordered product.

  The information processing apparatus 100 includes a storage unit 110 in which steel plate product data is stored, a product information transmission unit 120 that transmits product information including position information and specification information of the steel plate product to the terminal device 200, and product information from the terminal device 200. , A dimension information acquisition unit 140 that receives dimension information of a steel sheet product from the thickness measuring device 300 and the position detection system 400, and a matching unit 150 that matches the steel sheet product. ing. The information processing device 100 is connected to the terminal device 200, the thickness measuring device 300, and the position detection system 400 via a communication network, and the terminal device 200, the thickness measuring device 300, and the position detection device 400 are connected via the communication network. Data can be transmitted to and received from the system 400. In the information processing apparatus 100, each unit is generally controlled by a control unit (not shown).

  The storage unit 110 includes a product position information DB 111 in which the position information of the steel sheet products in the factory is stored, a product identification information DB 112 in which information for identifying the steel sheet products in the factory is stored, and dimensions according to the product specifications. It is configured to include a product specification information DB 113 in which information is stored, and a dimension information DB 114 in which dimension information and position information of the steel sheet product after the dimension measurement are linked and stored. Here, the position information of the steel sheet product is, for example, information on the position of the steel sheet product specified in the factory using the existing position detection technology, and if the dimension measurer can specify the position of the steel sheet product, Data format. The position information of the steel plate product (rectangular object) is the position information of the steel plate product detected by the position detection system 400. Specifically, for example, the coordinate information of each of the four corners of a plurality of steel plate products placed in the workplace, which is detected using the I-GPS (Indoor Global Positioning System) shown in FIG. Further, as another example of the position information of the steel plate product (rectangular object), the coordinates of the steel plate product obtained by detecting the product position information of each of the plurality of steel plate products placed in the workplace by the plurality of camera images. Information. The information for identifying the steel sheet product is information for identifying the steel sheet product, such as a plate number for identifying the steel sheet, and any data format as long as the dimension measurer can identify the steel sheet product. It may be.

  FIG. 7 is a dimension measurement processing flow using the dimension measurement processing system 1 shown in FIG. Hereinafter, the dimension measurement processing flow will be described with reference to FIGS. 6 and 7.

  First, at a work place such as a factory, the position information of the steel plate product (rectangular object) is detected by the position detection system 400 (step S10). Specifically, for example, a steel plate product (rectangular object) to be measured is selected from a plurality of steel plate products (rectangular objects), and the coordinate information of the four corners of the selected steel plate product (rectangular object) to be measured is represented by I. -Detect using GPS (Indoor Global Positioning System). Next, the coordinate information is registered in the product position information DB 111. As described above, the coordinate information may be, for example, the coordinate information of the steel sheet product obtained by detecting the product position information of each of the plurality of steel sheet products placed in the workplace by the plurality of camera images. . Further, since the position information of the steel sheet product includes the coordinate information of the four corners of the steel sheet product, the distance between the two points is determined by detecting the positions of two predetermined points of the steel sheet product based on the coordinate information. Measure as the predetermined dimensions of the product, and measure the width and length of the plate. Next, the product information transmitting unit 120 transmits the position information of the steel sheet product obtained from the product position information DB 111 and the identification information of the steel sheet product obtained from the product identification information DB 112 to the terminal device 200.

  The terminal device 200 receives the product information including the position information and the identification information of the steel plate product (Step S11). Next, based on the position information and the identification information of the steel sheet products, a steel sheet product whose thickness is to be measured is selected from a large number of steel sheet products in the factory (step S12). In step 12, for example, the worker 60 selects a steel plate product whose thickness is to be measured from among the steel plate products in front of him, based on the position information and the product identification information received by the terminal device 200. Next, the terminal device 200 transmits the product information received from the terminal device 200 to the information processing device 100. Here, the product information is received by the product information receiving unit 130 of the information processing apparatus 100. The product information received by the product information receiving unit 130 includes product position information and product identification information. Further, the product information transmitting unit 120 acquires from the product specification information DB 113 and transmits product specification information required for measurement by the thickness measuring device 300, and the terminal device 200 receives the product specification information ( Step 13). Step 13 does not necessarily need to be performed immediately after step 12, but may be performed when information is requested from the terminal device 200.

  The operator 60 acquires the product specification information for the selected steel plate product (rectangular object) to be measured, and measures the thickness of the steel plate product to be measured based on the product specification information. Specifically, for example, as described above with reference to FIG. 5, the thickness of a steel plate product (rectangular object) is measured using a thickness measuring device (wireless thickness measuring device) 300 incorporating a radio wave transmitting device. Then, the position where the thickness measurement is performed is detected (step 14).

  Next, the worker 60 transmits, to the information processing apparatus 100, the measured value of the thickness of the steel sheet product and the position information at which the thickness was measured as the dimension measurement information (step S15). Here, the dimension information acquisition unit 140 of the information processing device 100 receives the dimension measurement information. In step S15, the dimension information acquisition unit 140 further measures the width and length of the steel sheet product measured as the dimension measurement information based on the position information of the steel sheet product detected by the position detection system 400. Receive. Therefore, the dimension measurement information received by the dimension information acquisition unit 140 includes a measured value of the thickness of the steel sheet product, information on the position at which the thickness was measured, a measured value of the sheet width, and a measured value of the sheet length.

  Next, the collation performed by the collation unit 150 in the information processing apparatus 100 and the storage in the storage unit 110 will be described.

  The collation unit 150 compares the product position information included in the product information with the position information measured by the sheet thickness measuring device 300 to collate the steel sheet product as the measurement target (Step S16). Further, the collating unit 150 verifies that the dimension measurement value of the steel sheet product measured by the thickness measuring device 300 is within the dimension tolerance range of the product specification based on the product specification information acquired from the product specification information DB 113. (Step S17).

  Then, the collation result and the measured dimensional information of the steel sheet product are linked and stored in the dimensional information DB 114 (step S18).

  The embodiments of the present invention described above are to be considered in all respects as illustrative and not restrictive. That is, the scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 Dimension measurement processing system 10 Measurement object (rectangular object)
Reference Signs List 20 transmitter 30 I-GPS single sensor 40 wireless thickness measuring device 41 transmitter (radio wave transmitting device)
Reference Signs List 60 worker 100 information processing device 101 receiver 102 display unit 110 storage unit 120 product information transmission unit 130 product information reception unit 140 dimension information acquisition unit 150 collation unit 200 terminal device 300 plate thickness measurement device (wireless thickness measurement device)
400 Position detection system

Claims (6)

A method for measuring dimensions of a rectangular object,
Using wireless position detection technology, the distance between the two points is measured as a predetermined dimension of the rectangular object by detecting the positions of two predetermined points on the rectangular object, and the measured value of the predetermined dimension of the rectangular object is used as information. A method for measuring dimensions of a rectangular object, wherein the method is transmitted to a processing device.   The method for measuring a dimension of a rectangular object according to claim 1, wherein the wireless position detection technology is a technology using an I-GPS (Indoor Global Positioning System). The rectangular object is a thick plate,
The positions of the predetermined two points are a position of one end and a corresponding other end in the longitudinal direction or the width direction of the thick plate,
3. The method according to claim 1, wherein the predetermined dimension is a length or a width of the thick plate.   After detecting the entire position of the rectangular object using the wireless position detection technology, the thickness of the rectangular object and the thickness were measured using a wireless thickness measuring device incorporating a radio wave transmitting device. The position of the rectangular object according to any one of claims 1 to 3, wherein the position is detected, and the measured value of the thickness and the position information obtained by performing the thickness measurement are transmitted to the information processing device. Dimension measurement processing method.   A rectangular object to be measured is selected from a plurality of rectangular objects, and coordinate information of four corners of the selected rectangular object to be measured is detected using an I-GPS (Indoor Global Positioning System). The method for measuring the dimensions of a rectangular object according to any one of claims 1 to 4.   The dimension measurement according to claim 5, wherein the product specification information for the selected rectangular object to be measured is obtained, and the thickness of the rectangular object to be measured is measured based on the product specification information. Processing method.

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