JP2021114011A - Information acquisition system - Google Patents

Abstract

To provide an information acquisition system which can correctly read a two-dimensional code even when a part of the two-dimensional code is shielded by a shielding object.SOLUTION: An information acquisition system comprises: a light emission display device which has plural sets of light emission functional parts having a plurality of row-like light emission parts in a direction intersecting a row direction; a turning-on control unit which makes a light emission part group formed of the light emission parts of the two or more light emission functional parts display a two-dimensional code and controls the turn-on of the light emission part group so as to move the two-dimensional code in the row direction or intersection direction; and a terminal device which has an imaging unit that images the two-dimensional code displayed on the light emission part group and a display unit that displays information corresponding to the two-dimensional code. The terminal device comprises: a non-shielding portion specification unit which specifies a non-shielding portion in the light emission part group from the image obtained by imaging the light emission part group; and a complementing unit which complements a shielding portion in the light emission part group from the image of the two-dimensional code displayed in a moving manner on the light emission part group by using the non-shielding portion in the light emission part group and restores the two-dimensional code.SELECTED DRAWING: Figure 8

Description

The present invention relates to an information acquisition system.

Industrial machines such as machine tools may be equipped with a strong electric board for controlling the machine. Inside the high-voltage panel, a plurality of I / O units, which are input / output devices for inputting / outputting various control information, are arranged. The I / O unit has a function of displaying an operating state by lighting a light emitting unit composed of an LED or the like.

Generally, in a machine tool equipped with CNC (Computer Numerical Control), when an error occurs in the I / O unit, the error information is transmitted from the I / O unit to the CNC and displayed on the monitor screen of the CNC. It has become. Some I / O units display error information by the display unit of the 7-segment LED. The error information of the I / O unit having a 7-segment LED can be obtained without looking at the CNC, but the amount of information is small. In addition, many I / O units that do not have a 7-segment LED do not know the error information without looking at the CNC. Therefore, the operator needs to perform recovery work on the I / O unit by checking the error information displayed on the CNC monitor screen.

However, the installation location of the high-voltage board and the installation location of the CNC may be separated. In that case, the operator has to move to the high-voltage board and perform the recovery work after confirming the error information and the solution of the error on the CNC monitor screen, which is poor in workability. Therefore, it is desirable that the error information of all the I / O units in the high-voltage board can be confirmed in front of the high-voltage panel without moving to the CNC installation location.

When an operator performs recovery work on an I / O unit, it may be necessary to obtain a detailed solution corresponding to an error that has occurred in the I / O unit. In that case, the error information consisting of the two-dimensional code displayed on the I / O unit is read by, for example, a tablet-type terminal device, and the terminal device acquires detailed solution information corresponding to the error information from the server. It is conceivable to display it to the operator on the screen of the terminal device. For that purpose, it is desired to display as much information as possible in the I / O unit.

Conventionally, a display device of a multi-point input / output device capable of displaying a character string indicating an abnormal state by using an LED provided in the I / O unit when the I / O unit determines an abnormality has been known. (See, for example, Patent Document 1). According to this technique, since the error information of the I / O unit can be displayed on the LED as a character string (two-dimensional code), more information can be displayed as compared with the 7-segment display unit.

Jikkenhei 2-1782 Gazette

However, many wirings are provided in the high electric panel in which the I / O unit is arranged. Therefore, there is a problem that a part of the error information displayed on the I / O unit is shielded by the wiring and cannot be read accurately by the terminal device.

Therefore, in a system that acquires information by reading a two-dimensional code, even if a part of the two-dimensional code displayed by the light emitting unit is shielded by a shield, the two-dimensional code can be read accurately. It is desirable to do.

The information acquisition system according to one aspect of the present disclosure includes a light emitting display device having a plurality of light emitting function units having a plurality of light emitting units arranged in a row in an intersecting direction intersecting the row directions of the plurality of light emitting units. The two-dimensional code is displayed on the light emitting unit group composed of the plurality of light emitting units of the two or more light emitting function units, and the light emitting unit group moves so that the two-dimensional code moves in the column direction or the intersecting direction. A lighting control unit that controls the lighting of the light emitting unit, an imaging unit that captures the two-dimensional code displayed on the light emitting unit group, and a terminal device having a display unit that displays information corresponding to the two-dimensional code. The terminal device includes a non-shielding portion specifying portion that identifies a non-shielding portion that is not shielded by a shield in the light emitting portion group from an image obtained by capturing the light emitting portion group by the imaging unit, and the light emitting portion. Using the non-shielded portion specified by the non-shielded portion specifying portion of the group, the light emitting from the image captured by the imaging unit with the two-dimensional code displayed so as to move to the light emitting unit group. It further has a complementary portion that complements the shielded portion of the group group that is shielded by the shield and restores the two-dimensional code.

According to one aspect, it is possible to provide an information acquisition system capable of accurately reading the two-dimensional code even if a part of the two-dimensional code displayed by the light emitting unit is shielded by a shield.

It is an overall perspective view which shows the machine tool which includes a CNC and a high electric board. It is a front view which shows the inside of a high electric board. It is a front view which shows a plurality of I / O units in a high electric board. It is a figure which shows the 2D code displayed by the light emitting part group of an I / O unit. It is a functional block diagram which shows the structure of the information acquisition system which concerns on one aspect of this disclosure. It is a functional block diagram which shows the structure which generates the time-series display data of 2D code data from error information. It is a functional block diagram which shows the structure of a terminal device. It is a figure which shows the terminal apparatus which imaged the I / O unit of the part A in FIG. 2 which displayed the two-dimensional code. It is a functional block diagram which shows the structure in the tablet control part of a terminal device. It is a figure which shows the terminal device which imaged the light emitting part group which turned on all. It is a flowchart explaining the operation of a lighting control unit. It is a flowchart explaining operation of a terminal apparatus. It is a front view which shows the light emitting part group which the 2D code is moved and displayed. It is a front view which shows the light emitting part group which the 2D code is moved and displayed. It is a front view which shows the light emitting part group which the 2D code is moved and displayed. It is a front view which shows the light emitting part group which the 2D code is moved and displayed. It is a front view which shows the light emitting part group which the 2D code is moved and displayed. It is a figure which shows the 2D code of the unshielded part which does not move a 2D code. It is a figure which shows the 2D code of the unshielded part which moved 2D code to the left by 1 line. It is a figure which shows the 2D code of the unshielded part which moved 2D code to the left by 2 lines. It is a table which shows the relationship between the number of movements of a 2D code, and the 2D code read by an unshielded part. It is a figure which shows the 2D code which the shield part was complemented.

Hereinafter, the information acquisition system according to one aspect of the present disclosure will be described in detail with reference to the drawings. The information acquisition system according to one aspect of the present disclosure shows a case where it is applied to a processing system including a machine tool.
As shown in FIG. 1, in the processing system 1, a machine tool (not shown) for processing a work is installed inside the processing chamber 11. CNC2 is installed on the outer wall surface 11a of the processing chamber 11. Further, a strong electric board 3 is installed on the other outer wall surface 11b of the processing chamber 11. That is, since the CNC 2 and the high electric board 3 are installed on different outer wall surfaces of the processing chamber 11, it is troublesome to move the error information generated in the high electric board 3 to the installation location of the CNC 2 and check the work. Bad sex.

As shown in FIG. 2, a plurality of control units 31 and I / O units 32 and 33 are arranged inside the high-voltage panel 3. The high-voltage board 3 is provided with a plurality of wires 34 for connecting between the control unit 31 and the I / O unit 33 and between the I / O units 32 and 33.

A plurality of I / O units 4 are further arranged inside the high electric board 3. As shown in FIG. 3, the I / O unit 4 has a plurality of light emitting units 41 for displaying the operating state of the I / O unit 4, and a plurality of terminals 42, respectively. The light emitting unit 41 is composed of, for example, an LED (Light Emitting Diode). The I / O unit 4 shown in the present embodiment has eight light emitting units 41 arranged in a row in the vertical direction. The plurality of I / O units 4 are provided side by side in the horizontal direction (horizontal direction in FIGS. 2 and 3) orthogonal to the arrangement direction (vertical direction) of the light emitting units 41.

The I / O unit 4 of the present embodiment is a light emitting function unit having a plurality of light emitting units 41 arranged in a row. A plurality of sets of the I / O units 4 are arranged side by side in an intersecting direction intersecting the row directions of the plurality of light emitting units 41 to form a light emitting display device. For example, FIG. 3 shows six sets of I / O units 4 arranged side by side in the lateral direction (intersection direction) orthogonal to the row direction of the light emitting unit 41. As a result, a dot matrix-shaped light emitting display device 4A having a light emitting unit group 40 composed of 48 light emitting units 41 having 8 rows vertically and 6 columns horizontally is configured. In FIG. 3, the lit light emitting unit 41 is shown by hatching, and the lit light emitting unit 41 is shown in white. In this embodiment, the two-dimensional code is represented by the light emitting unit group 40 having 8 rows vertically and 6 columns horizontally.

As shown in FIG. 4, the light emitting unit group 40 of the light emitting display device 4A composed of the plurality of I / O units 4 can display the two-dimensional code X by the light emitting unit 41 that is selectively lit. .. Each light emitting unit 41 may be monochromatic or multicolored. The monochromatic light emitting unit 41 can display the information of "off: 0, on: 1". The multicolor light emitting unit 41 displays more information than in the case of a single color, for example, "off: 0b00, lighting (green): 0b01, lighting (red): 0b10, lighting (blue): 0b11". Therefore, a lot of information can be displayed with a two-dimensional code.

In the information acquisition system according to one aspect of the present disclosure, information on an error that has occurred in the I / O unit 4 or the like in the high electric panel 3 is two-dimensionally transmitted to the light emitting display device 4A composed of a plurality of sets of I / O units 4. Encode and display. The displayed two-dimensional code is read by the terminal device 5 (see FIG. 5) operated by the operator. The terminal device 5 acquires information on an error resolution method corresponding to the error information from the server 100 by communicating with an external server 100 (see FIG. 7), and the display unit 52 (display unit 52) provided in the terminal device 5 (see FIG. 7). (See FIG. 8). As a result, the operator does not need to move to the installation location of the CNC 2, and can perform the error recovery work while checking the error resolution information displayed on the terminal device 5 in front of the high power board 3.

Next, the configuration of the information acquisition system will be described with reference to FIG. The information acquisition system shown in FIG. 5 is composed of a CNC 2, a high power board 3, a plurality of I / O units 4 in the high power board 3, and a terminal device 5.

The CNC 2 includes a CNC control unit 21 that controls the entire machining system 1, an I / O unit control unit 22 that controls the I / O unit 4, a motor control unit 23 that controls each motor of the machine tool, and a machine tool. It has at least a peripheral / display control unit 24 that controls peripheral devices of the above, a display device of CNC2, and the like, and these are connected by an internal bus 25.

The I / O unit 4 in the high-voltage board 3 is composed of an interface module 410, an output module 420, and an input module 430. In the I / O unit 4, the output module 420 and the input module 430 can be freely combined. The I / O unit 4 may be provided with at least one of the output module 420 and the input module 430.

The interface module 410 transmits / receives data between the I / O unit 4 and the CNC 2. The interface module 410 includes a control circuit 411 that controls the operation of the I / O unit 4 and a data communication unit 412 that transmits / receives data between the I / O unit control unit 22 of the CNC2.

The output module 420 is an output unit in the I / O unit 4. In addition to the light emitting unit 41 and the terminal 42, the output module 420 outputs from the control circuit 421 that controls the operation of the output module 420, the abnormality detection unit 422 that detects the abnormality of the output module 420, and the output module 420. It has an output circuit 423 and. The output circuit 423 is connected to an external relay, lamp, or the like via the terminal 42.

The input module 430 is an input unit in the I / O unit 4. In addition to the light emitting unit 41 and the terminal 42, the input module 430 performs input to the input module 430, the control circuit 431 that controls the operation of the input module 430, the abnormality detection unit 432 that detects the abnormality of the input module 430, and the input module 430. It has an input circuit 433 and. The input circuit 433 is connected to an external switch, sensor, or the like via the terminal 42.

The control circuits 411,421,431 in the I / O unit 4 are connected by an internal bus 400. When an error occurs, the abnormality detection units 422 and 432 of the output module 420 and the input module 430 contact the control circuit 411 of the interface module 410 via the control circuits 421 and 431 and the internal bus 400 according to the type of error. Sends an error detection signal. The interface module 410 transmits the error detection signal to the I / O unit control unit 22 of the CNC2 via the data communication unit 412.

The I / O unit control unit 22 of the CNC 2 includes a data communication unit 221 that transmits / receives data to / from the data communication unit 412 of the interface module 410 of the I / O unit 4, and a control circuit 222 that controls the transmission / reception of data. Have. The error detection signal transmitted from the I / O unit 4 to the I / O unit control unit 22 is transmitted from the I / O unit control unit 22 to the CNC control unit 21 via the internal bus 25. The CNC control unit 21 generates error information from the error detection signal.

As shown in FIG. 6, the control circuit 211 of the CNC control unit 21 has a two-dimensional code generation unit 211a that two-dimensionally encodes error information in order to be displayed by a light emitting unit group 40 having 8 rows vertically and 6 columns horizontally. It also has a lighting control unit 211b that converts the two-dimensional code X generated by the two-dimensional code generation unit 211a into time-series display data for moving and displaying in one direction on the light emitting unit group 40.

The lighting control unit 211b transmits the generated time-series display data of the two-dimensional code X to the I / O unit control unit 22 via the internal bus 25. The I / O unit control unit 22 transmits the time-series display data of the two-dimensional code X to the I / O unit 4. Therefore, the light emitting unit group 40 of the I / O unit 4 moves and displays the two-dimensional code X based on the error information in one direction by the time-series display data of the two-dimensional code X transmitted from the CNC2. The movement display of the two-dimensional code X will be described later.

The lighting control unit 211b also has a function of fully lighting the light emitting unit 41 constituting the light emitting unit group 40. The full lighting display data for fully lighting the light emitting unit 41 is transmitted from the CNC control unit 21 to the I / O unit 4 via the I / O unit control unit 22. When the I / O unit 4 receives the full lighting display data from the CNC 2, the control circuits 421 and 431 of the modules 420 and 430 fully light the light emitting units 41 constituting the light emitting unit group 40 for a predetermined time.

The terminal device 5 is, for example, a tablet-type mobile terminal. As shown in FIG. 7, the terminal device 5 includes an imaging unit 51, a display unit 52 that displays an image captured by the imaging unit 51 and various types of information, and a tablet control unit 53 that controls the terminal device 5. It has a data communication unit 54 that performs data communication with an external server 100.

As shown in FIG. 8, the image pickup unit 51 is composed of a two-dimensional camera built in the terminal device 5. FIG. 8 shows a terminal device 5 in which the I / O unit 4 in the high-voltage board 3 shown in FIG. 2 has an image of the A portion surrounded by the alternate long and short dash line. Part A in FIG. 2 includes a light emitting part group 40 having 8 rows vertically and 6 columns horizontally. As shown in FIG. 8, the light emitting unit group 40 includes a light emitting unit 41 that is turned on according to a two-dimensional code and a light emitting unit 41 that is turned off. In this way, the image of the light emitting unit group 40 captured by the imaging unit 51 is displayed on the display unit 52 of the terminal device 5.

The tablet control unit 53 image-recognizes the two-dimensional code X displayed by the light emitting unit group 40 having 8 rows vertically and 6 columns horizontally imaged by the imaging unit 51, and communicates with the external server 100 by the data communication unit 54. Thereby, the information corresponding to the two-dimensional code X, that is, the information of the error solving method corresponding to the error information is acquired from the server 100. The tablet control unit 53 displays information on the error resolution method acquired from the server 100 on the display unit 52.

Here, as shown in FIG. 2, a plurality of wirings 34 are provided in the strong electric board 3. A part of the wiring 34 extends so as to cover the light emitting portion 41 of the I / O unit 4 and shields the light emitting portion 41. Therefore, even if the light emitting unit group 40 in which the two-dimensional code X is displayed is imaged by the imaging unit 51 of the terminal device 5, a part of the light emitting unit group 40 is a wiring 34 (shield) as shown in FIG. ), The terminal device 5 cannot accurately recognize the two-dimensional code X as an image. Therefore, as described below, the tablet control unit 53 of the terminal device 5 transmits the two-dimensional code data corresponding to the light emitting unit 41 shielded by the wiring 34 in the two-dimensional code X displayed in the light emitting unit group 40. It has a configuration for restoring the two-dimensional code X by complementing it.

That is, as shown in FIG. 9, the tablet control unit 53 of the terminal device 5 identifies an unshielded portion that is not shielded by the wiring 34 in the image of the light emitting unit group 40 captured by the imaging unit 51. The partially specified portion 531 and the unshielded portion specified by the non-shielded portion specifying portion 531 are used to complement the shielded portion shielded by the wiring 34 in the image of the light emitting unit group 40 and restore the two-dimensional code X. It has a complementary portion 532 and a complementary portion 532.

The unshielded portion specifying unit 531 identifies the unshielded portion of the image of the light emitting unit group 40 captured by the imaging unit 51 by recognizing the image. FIG. 10 shows an image of the light emitting unit group 40 that is fully lit by the all lighting signals transmitted from the CNC2. The light emitting unit 41, which is not shielded by the wiring 34 which is a shield, has a predetermined outer shape and a predetermined brightness of the light emitting unit 41. Therefore, the non-shielded portion specifying unit 531 identifies the non-shielded portion that can be recognized by the entire light emitting unit 41 based on the information on the outer shape and brightness of the light emitting unit 41 in the image, and the non-shielded portion is not shielded in the display unit 52. A siege frame 50 indicating a portion is displayed. The surrounding frame 50 may be any as long as the specified unshielded portion can be visually recognized by the operator.

The complementary unit 532 uses the non-shielded portion specified by the non-shielded portion specifying unit 531, that is, the region surrounded by the surrounding frame 50 shown in FIG. 10, to obtain the two-dimensional reference numeral X displayed in the light emitting unit group 40. From the image captured by the image pickup unit 51 of the terminal device 5, the shielded portion that is shielded by the wiring 34 of the light emitting unit group 40 and cannot recognize the light emitting unit 41 is complemented. As a result, the complementary unit 532 restores the two-dimensional code X.

Next, specific operations of the CNC 2, the I / O unit 4, and the terminal device 5 in the information acquisition system will be described based on the flowcharts shown in FIGS. 11 and 12.
First, the operation of the CNC 2 and the I / O unit 4 will be described with reference to FIG. The CNC2 monitors whether or not an abnormality has been detected by the abnormality detection units 422 and 432 of the I / O unit 4 of the high-voltage board 3 (S101). When an abnormality is detected in the I / O unit 4 and an error detection signal is received from the I / O unit 4 (step S101: YES), the CNC control unit 21 of the CNC 2 generates error information based on the error detection signal. The two-dimensional code generation unit 211a generates two-dimensional code data corresponding to the error information (S102).

Next, the CNC control unit 21 generates time-series display data for causing the light emitting unit group 40 to move and display the two-dimensional code X in one direction in the lighting control unit 211b based on the generated two-dimensional code data ( S103). The CNC control unit 21 transfers all the lighting display data for fully lighting the light emitting unit group 40 and the generated time-series display data via the I / O unit control unit 22 to the I / O unit 4 of the high power board 3. (S104).

The I / O unit 4 lights and displays the light emitting unit group 40 by the all lighting display data and the time series display data transmitted from the CNC 2. Specifically, the I / O unit 4 first fully lights the light emitting unit group 40 based on the all lighting display data. The time for fully lighting the light emitting unit group 40 can be set to an arbitrary time (for example, 5 seconds) in which the operator can image the light emitting unit group 40 by the terminal device 5. After that, the I / O unit 4 causes the light emitting unit group 40 to display the two-dimensional code X based on the time-series display data, and further causes the two-dimensional code X to be moved and displayed in one direction.

Next, the operation of the terminal device 5 will be described with reference to FIG.
While the light emitting unit group 40 of the I / O unit 4 is fully lit for a certain period of time, the terminal device 5 is operated by the operator to image the fully lit light emitting unit group 40. The terminal device 5 displays the image of the light emitting unit group 40 captured by the imaging unit 51 on the display unit 52 and sends it to the tablet control unit 53, and the tablet control unit 53 recognizes the image (S201).

The terminal device 5 identifies the non-shielded portion from the image of the light emitting unit group 40 that is fully lit and displayed in the non-shielded portion specifying unit 531 of the tablet control unit 53, and displays the non-shielded portion on the display unit 52 as shown in FIG. A surrounding frame 50 indicating an unshielded portion is displayed in the image of the light emitting unit group 40 (S202).

After all the lighting display of the light emitting unit group 40 is completed, the I / O unit 4 sets the two-dimensional code X in one direction as shown in FIGS. 13A to 13E based on the time-series display data of the two-dimensional code. Move and display. The terminal device 5 continuously captures the time-series display data of the two-dimensional code X that is moved and displayed by the light emitting unit group 40 and recognizes the image (S203).

Specifically, when the two-dimensional code to be displayed on the light emitting unit group 40 is the two-dimensional code X shown in FIGS. 3 and 4, the I / O unit 4 fully lights the light emitting unit group 40 for a certain period of time. , The two-dimensional code X is displayed on the light emitting unit group 40, and the two-dimensional code X is moved in one direction at regular intervals (for example, 1 second intervals). As shown in FIG. 8, the terminal device 5 takes an image of the two-dimensional code X first displayed in the light emitting unit group 40, and saves the image as a base image.

13A to 13E show a case where the two-dimensional code X is moved line by line in the lateral direction (left direction) orthogonal to the arrangement direction (vertical direction) of the light emitting unit 41. Since the wiring 34, which is a shield, generally extends in the vertical direction, the two-dimensional code is moved line by line in the horizontal direction intersecting the extending direction of the wiring 34 to form the unshielded portion indicated by the surrounding frame 50. , It is possible to make it easy for the two-dimensional code shielded by the shielding portion to appear.

As shown in FIGS. 13A to 13E, by moving the two-dimensional code X line by line to the left, the light emitting portion 41 of the shielding portion that is out of the surrounding frame 50 is not moved as the two-dimensional code X moves. It appears inside the surrounding frame 50, which is a shielding portion. Therefore, as shown in FIG. 8, the two-dimensional code data displayed by the light emitting unit 41, which is shielded by the wiring 34 and cannot be recognized, can also be image-recognized.

The tablet control unit 53 of the terminal device 5 receives the saved base image (the image in which the two-dimensional code is first captured) and the current image (1 with respect to the base image) at the timing when the two-dimensional code X moves line by line. Compare with the image moved to the left by a line). When it is determined that the two images do not match, the tablet control unit 53 captures the current image and additionally saves it. At this time, the base image is updated. The terminal device 5 repeats the imaging operation and the saving operation until the two-dimensional code X finishes moving on the light emitting unit group 40.

To determine the line number of the data of the two-dimensional code X displayed in the light emitting unit group 40, for example, all the light emitting units 41 at the top of the light emitting unit group 40 are set to bits indicating the line number. Can be identified by. For example, 1st line: always on, 2nd line: always off, 3rd line: on 1 second, off 1 second, 4th line: on 0.5 seconds, off 0.5 seconds, 5th line: on 1 Seconds, lights off 0.5 seconds, 6th line: By setting the lights on for 0.5 seconds and the lights off for 1 second, the lines with the two-dimensional code can be identified. Further, when the light emitting unit 41 can display in multiple colors, all the light emitting units 41 at the top of the light emitting unit group 40 may be made to emit light in different colors according to the line number.

The tablet control unit 53 of the terminal device 5 repeats the above-described processing until the time-series display data of the two-dimensional code X that is moved and displayed by the light emitting unit group 40 is completed (S204).

However, the tablet control unit 53 determines the end of the time series display data (end of reading the two-dimensional code) at the stage when all the shielded parts of the two-dimensional code X are recognized by the non-shielded part indicated by the surrounding frame 50. You may. For example, when the number of lines of the two-dimensional code X is six, when the two-dimensional code is moved and displayed, the light emitting portion 41 inside the surrounding frame 50, which is a non-shielding portion, has all six lines. When the data of the two-dimensional code X can be acquired, the reading operation (imaging operation) of the two-dimensional code X may be automatically terminated.

14A to 14C show a state in which the two-dimensional code X for 6 lines is not moved (S = 0 times), a state in which the 2D code X for 1 line is moved (S = 1 time), and a state in which the 2D code X is moved for 2 lines (S = 0 times). 2 times) are shown respectively. Further, in FIG. 15, as a result of moving the two-dimensional code X line by line, the lines recognized in the unshielded portion are indicated by white circles. In FIGS. 14A to 14C, all the light emitting units 41 in the vertical direction can be recognized in the surrounding frames 50a and 50b, respectively. In this case, as shown in FIG. 15, by moving the two-dimensional code X by two lines, all the two-dimensional code X can be recognized by the unshielded portion. Therefore, the tablet control unit 53 can determine that the time-series display data of the two-dimensional code X has ended when the two-dimensional code X has moved by two lines.

When it is determined in step S204 shown in FIG. 12 that the time-series display data of the two-dimensional code X has been completed (step S204: YES), the tablet control unit 53 uses the image saved in the complementary unit 532. The two-dimensional code data of the shielded portion is complemented, and the two-dimensional code data is restored (S205). FIG. 16 shows the restored two-dimensional code X1. As shown in FIG. 8, the two-dimensional code data by the light emitting unit 41 shielded by the wiring 34 and unrecognizable is complemented, and the same two-dimensional code X1 as the two-dimensional code X shown in FIG. 4 is restored.

After the two-dimensional code X1 is restored, the tablet control unit 53 communicates with the server 100 and acquires information on an error resolution method corresponding to the restored two-dimensional code X1 (S206). After that, the tablet control unit 53 displays the acquired information on the error resolution method on the display unit 52 (S207). As a result, the operator performs the restoration work of the I / O unit 4 in front of the high power board 3 while checking the information of the error solving method displayed on the terminal device 5.

As described above, according to the information acquisition system according to one aspect, even if a part of the two-dimensional code X displayed by the light emitting unit 41 is shielded by the wiring 34 (shield), the two-dimensional code is shielded by the terminal device 5. X can be read accurately, and information on an error resolution method can be obtained based on the two-dimensional code X.

Further, in order to identify the unshielded portion of the two-dimensional code X captured by the terminal device 5 by automatically recognizing the fully lit light emitting unit group 40 from the image captured by the imaging unit 51, the unshielded portion is specified. It can be done easily.

The unshielded portion of the two-dimensional code X captured by the terminal device 5 may be specified by the operator's instruction by the operator confirming the image of the light emitting unit group 40 displayed on the display unit 52. good. In this case, it is not always necessary to fully turn on the light emitting unit group 40.

In the above embodiment, the two-dimensional code generation unit 211a and the lighting control unit 211b shown in FIG. 6 are provided in the control circuit 211 of the CNC control unit 21, but are not limited thereto. For example, the two-dimensional code generation unit 211a and the lighting control unit 211b may be provided in the control circuit 222 of the I / O unit control unit 22. Further, a part of the functions of the lighting control unit 211b (for example, the function of fully lighting the light emitting unit group 40) may be provided in the control circuit 411 of the interface module 410 of the I / O unit 4, for example.

4 I / O unit (light emitting function unit)
4A Light emitting display device 40 Light emitting unit group 41 Light emitting unit 5 Terminal device 51 Imaging unit 52 Display unit 531 Non-shielding part identification unit 532 Complementary unit 211b Lighting control unit X 2D code

Claims (2)

A light emitting display device having a plurality of light emitting function units having a plurality of light emitting units arranged in a row in an intersecting direction intersecting the row directions of the plurality of light emitting units.
The two-dimensional code is displayed on the light emitting unit group composed of the plurality of light emitting units of the two or more light emitting function units, and the light emitting unit group moves so that the two-dimensional code moves in the column direction or the intersecting direction. Lighting control unit that controls the lighting of
An imaging unit that captures the two-dimensional code displayed on the light emitting unit group, and a terminal device having a display unit that displays information corresponding to the two-dimensional code.
With
The terminal device is
From the image of the light emitting unit group captured by the imaging unit, a non-shielding portion specifying portion that identifies an unshielded portion that is not shielded by a shield in the light emitting portion group, and a non-shielding portion specifying portion.
From the image captured by the imaging unit, the two-dimensional code displayed so as to move to the light emitting unit group using the unshielded portion specified by the unshielded portion specifying unit in the light emitting unit group. , A complementary portion that complements the shielded portion of the light emitting portion group that is shielded by the shield and restores the two-dimensional code.
An information acquisition system that further has. The lighting control unit has a function of lighting all the light emitting units.
The non-shielding portion specifying portion is shielded by the shield in the light emitting portion group by automatically recognizing the lit light emitting portion from the image captured by the imaging unit for the fully lit light emitting portion group. The information acquisition system according to claim 1, which identifies a non-shielded portion.

Images