JP2011081661A - Testing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a test device unitarily supporting execution of an interface test, while confirming the progress or the test result of the interface test. <P>SOLUTION: The test device includes an input/output section 10 for acquiring input/output signals transmitted/received by an input/output module; an arrangement section 20 for arranging values of the plurality of input/output signals acquired by the input/output section 10 in the order of arrangement of the terminals of the input/output module; a conversion section 30 for rewriting the value of an output signal of a programmable controller 400 to the value of an output signal for the test; an extraction section 40 for specifying the input/output module that is a target of the interface test, and extracting input/output circuit information, prescribing a property or a configuration of an input/output circuit using the specified input/output module, and input/output signal information prescribing signal identification information of the input/output signals, control contents, a control condition, and a control state; and a display section 50 for displaying the input/output signal information and the input/output circuit information extracted by the extraction section 40 and the values of the input/output signals acquired by the input/output section 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a test apparatus that supports an interface test for an operating plant control system.

  When constructing a control system according to the plant to be controlled and adjusting the control operation in the actual machine equipment, input / output signals from actuators, sensors and control operation devices of each machine equipment that is plant equipment are It is necessary to actually check whether the input / output signal is correctly recognized as an input / output signal on the programmable controller that is controlled via the input / output module. For example, the sensor can be turned on or off to monitor the value of the input signal on the programmable controller with a dedicated tool. Similarly, the dedicated interface can be used to send a test-on output signal from the programmable controller to the output interface circuit. By checking the on / off state, it is checked whether the input / output interface for transmitting / receiving input / output signals is correctly connected. Usually, it is difficult to carry out such check work by bringing circuit drawings and dedicated tools etc. to the site where the plant equipment is located. Conduct this while confirming with the on-site test operator and transceiver. The interface test in the plant has to be performed one point at a time for signals of plant equipment such as actuators, sensors and control operation devices spread over thousands of points and widely scattered in the plant. In addition, since the test confirmation work for each point is usually performed by two people, the work itself is complicated, and a large amount of time is required for the investigation response when a trouble occurs.

  Therefore, a test apparatus has been proposed that periodically inputs and outputs the plant, inputs the operation state of the device from a plurality of input elements, and outputs the result of the control calculation reflecting the operation state by the program to the plurality of output elements. (For example, refer to Patent Document 1). However, the progress status is unknown during the test work, and there is a problem that the test once performed is repeated. In addition, the test results are recorded by marking on the circuit diagram of normal paper and writing comments, and there is also a problem that it takes time because the test status report and the evidence of the test results are also used for the paper. .

Japanese Patent No. 3713150

  In view of the above problems, an object of the present invention is to provide a test apparatus that supports the implementation of a test in a unified manner while confirming the progress status and test results of an interface test.

  In order to achieve the above object, an aspect of the present invention relates to a test apparatus that performs an interface test with an input / output module using a programmable controller that controls plant equipment via the input / output module. That is, the test apparatus according to the aspect of the present invention includes (a) an input / output unit that acquires an input signal and an output signal transmitted / received by the input / output module via a programmable controller, and (b) a plurality of acquired by the input / output unit. (C) a conversion unit that rewrites the output signal value of the programmable controller into an output signal value for interface testing; D) Input / output circuit information that specifies the configuration and characteristics of the input / output circuit that uses the specified input / output module, the signal identification information that the input / output signal has, and the control An extraction unit that extracts input / output signal information that defines the contents, control conditions, and control state, and (e) input / output acquired by the input / output unit and arranged by the arrangement unit And summarized in that a display unit value and extraction of No. displays the extracted output circuit information and input and output signal information.

  According to the present invention, it is possible to provide a test apparatus that integrally supports the execution of a test while confirming the progress of the interface test and the test result.

1 is a block diagram of a test apparatus according to a first embodiment of the present invention. 1 is a system configuration diagram of a test apparatus according to a first embodiment of the present invention. It is a flowchart figure of the test method which concerns on the 1st Embodiment of this invention. It is a flowchart figure of the test method which concerns on the 1st Embodiment of this invention. It is a block diagram of the test equipment concerning a 2nd embodiment of the present invention. It is a block diagram of the test apparatus which concerns on the 3rd Embodiment of this invention. It is a block diagram of the testing apparatus which concerns on the 4th Embodiment of this invention. It is the schematic of the bit input signal which concerns on the 4th Embodiment of this invention. It is a flowchart figure of the test method which concerns on the 4th Embodiment of this invention. It is a block diagram of the testing apparatus which concerns on the 5th Embodiment of this invention. It is a flowchart figure of the test method which concerns on the 5th Embodiment of this invention. It is a block diagram of the test equipment concerning a 6th embodiment of the present invention. It is a flowchart figure of the test method which concerns on the 6th Embodiment of this invention. It is a block diagram of the testing apparatus which concerns on the 7th Embodiment of this invention. It is a flowchart figure of the test method which concerns on the 7th Embodiment of this invention.

  Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the configuration of the apparatus and system is different from the actual one. Therefore, a specific configuration should be determined in consideration of the following description. In addition, it is a matter of course that portions having different configurations are included between the drawings.

  The following embodiments of the present invention exemplify apparatuses and methods for embodying the technical idea of the present invention, and the technical idea of the present invention is the material and shape of the component parts. The structure, arrangement, etc. are not specified as follows. The technical idea of the present invention can be variously modified within the technical scope described in the claims.

(First embodiment)
<Configuration of test equipment>
The test apparatus according to the embodiment of the present invention includes an input / output unit 10, an arrangement unit 20, a conversion unit 30, an extraction unit 40, and a display unit 50, as shown in FIG. Plant equipment (first plant equipment 301, second plant equipment 302, and third equipment) via output modules (first input / output module 201, second input / output module 202, and nth input / output module 203). Using a programmable controller 400 for controlling the plant equipment 303), an interface test with an input / output module is performed.

  The input / output unit 10 acquires input signals and output signals transmitted and received by the input / output modules 201 to 203 via the programmable controller 400.

  The array unit 20 arranges the values of the plurality of input signals and output signals acquired by the input / output unit 10 in the order of arrangement of the terminals of the input / output modules 201 to 203.

  The converter 30 rewrites the value of the output signal of the programmable controller 400 to the value of the test output signal.

  The extraction unit 40 identifies the input / output modules 201 to 203 that are the subject of the interface test, the input / output circuit information that defines the configuration and characteristics of the input / output circuits included in the identified input / output modules 201 to 203, and the input / output Signal identification information included in the signal, control contents, control conditions, and input / output signal information defining the control state are extracted. The input / output circuit information and the input / output signal information are information set in advance by text data, image data, and the like, and are stored in a storage device (not shown). The input / output circuit information includes image data of an input / output circuit included in the input / output module, a device number of the input / output module, and the like. The input / output signal information includes an input / output signal name, an input / output signal address, a signal comment, and the like.

  The display unit 50 displays the values of the input / output signals acquired by the input / output unit 10 and arranged by the arrangement unit 20, the input / output circuit information and the input / output signal information generated by the extraction unit 40, and the like.

  Here, the plant devices 301 to 303 correspond to operation buttons, lamp indicators, and numerical indicators included in a motor drive device, an actuator, a sensor, and an operation device that are mechanical equipment of the plant. The plant devices 301 to 303 are connected to the programmable controller 400 via input / output modules 201 to 203 that transmit / receive input / output signals input / output from / to these devices. The test apparatus 100 and the programmable controller 400 are connected via a communication network.

<Input module test method using test equipment>
Next, a method in which the test apparatus according to the first embodiment of the present invention performs an interface test on the input modules of the input / output modules 201 to 203 will be described with reference to the flowchart of FIG.

  (A) In step S101, the input / output unit 10 illustrated in FIG. 1 acquires an input signal input to the input / output modules 201 to 203 from the programmable controller 400 illustrated in FIG.

  (B) In step S102, the arrangement unit 20 rearranges the input signals acquired by the input / output unit 10 in the order of arrangement of the terminals of the input modules in the input / output modules 201 to 203. In step S <b> 103, the extraction unit 40 extracts input / output circuit information related to the circuit diagram and the like of the first input / output module 201 to be tested.

  (C) In step S104, the display unit 50 extracts the value of the input signal obtained by the input / output unit 10 from the input / output modules 201 to 203 and rearranged by the arrangement unit 20 in the order of the arrangement of the terminals of the input module and the extraction unit 40. A circuit diagram using the first input / output module 201 as the test object is displayed. The value of the displayed input signal is updated when the input / output unit 10 acquires a new input signal.

  In this way, the first plant equipment 301 connected to the first input / output module 201 corresponds to the first input / output module displayed on the display unit 50 in conjunction with the control work of turning on or off the power. The interface test can be performed by checking whether the value of the input signal to be changed changes.

<Output module test method using test equipment>
Next, a method in which the test apparatus according to the first embodiment of the present invention performs an interface test on the output modules of the input / output modules 201 to 203 will be described with reference to the flowchart of FIG.

  (A) In step S201, the input / output unit 10 acquires a plurality of output signals corresponding to the second input / output module 202 to be tested, using the output signals of the programmable controller. In step S <b> 202, the extraction unit 40 extracts input / output circuit information related to a circuit diagram and the like of the second input / output module 202 to be tested.

  (B) In step S203, the display unit 50 displays a plurality of output signals of the second input / output module 202 and circuit information of the second input / output module 202. In step S204, the conversion unit 30 rewrites the value of the output signal corresponding to the second input / output module 202 included in the programmable controller 400 to the value of the test output signal.

  (C) In step S205, the display unit 50 displays the changed value of the output signal of the second input / output module 202 corresponding to the value of the output signal rewritten by the conversion unit 30.

  In this manner, the test can be performed by rewriting the value of the output signal of the programmable controller 400 to the value of the test output signal and confirming that the corresponding output signal displayed on the display unit 50 is also changed. it can.

  In this way, whether or not the control operation for turning on or off the interface signal of the second plant device 302 is executed in conjunction with the display of the output signal for interface test received by the input / output module on the display unit 50. The interface test can be performed by confirming whether or not.

  As described above, the test apparatus 100 according to the first embodiment of the present invention does not change the settings of the control application program and the input / output modules 201 to 203 included in the programmable controller 400. It is possible to efficiently perform an interface test on the actuators and sensors connected to 201 to 203, as well as wiring and the like. In addition, by displaying the circuit information of the input / output modules 201 to 203, the location where the defect is found in the interface test is displayed using the circuit information such as the circuit diagram. Can be efficiently handled, and it is possible to reduce the work time and man-hours for the recovery procedure. Furthermore, by displaying the value of the input / output signal on the programmable controller required for the interface test, rewriting it to the test value, and displaying the circuit diagram of the input / output module, all the functions required for the interface test are 1 One test device can handle this. Therefore, the work efficiency of the interface test can be greatly improved. Furthermore, conventionally, the test operator who performs the test operation such as the confirmation of the output signal on the site side, the input of the input signal of the sensor, etc. and the value of the input / output signal on the programmable controller side using the engineering tool on the programmable controller side However, the test equipment of the present invention consolidates the interface test work only with the test equipment, and no dedicated engineering operation is required. It is possible to realize one-person work on the site side.

(Second Embodiment)
As shown in FIG. 5, the test apparatus according to the second embodiment of the present invention includes a report unit 60 that creates an interface test history and test results for the test apparatus according to the first embodiment. Further, the display unit 50 displays the history of the interface test and the test result.

  Also, by accumulating interface test history and test results in a storage device (not shown), it becomes possible to widely spread interface test know-how to other test operators and third parties.

(Third embodiment)
As shown in FIG. 6, the test apparatus according to the third embodiment of the present invention merges the progress of the interface test, the test result, and the circuit information with respect to the test apparatus according to the first embodiment. The merging unit 61 is further provided, and the display unit 50 displays the progress history and test results of the interface test merged in the circuit diagram together with the circuit diagram included in the circuit information. Thereby, the interface test for the circuits of the input / output modules 201 to 203 is performed. As well as clarifying the progress, it is possible to clearly indicate on the circuit diagram where the interface test has passed and failed. Therefore, it becomes possible for the test operator to quickly perform a repair process or the like on the defective part.

(Fourth embodiment)
<Configuration of test equipment>
As shown in FIG. 7, the test apparatus according to the fourth embodiment of the present invention does not include the conversion unit 30 as compared with the test apparatus according to the first embodiment, and has a pulse shape used for the interface test. A setting unit 70 for setting definition information related to a bit input signal, and whether or not the bit input signal received by the input / output module from the plant devices 301 to 303 matches the pulsed bit input signal set by the setting unit. And a determination unit 80. That is, the determination unit 80 receives the waveform pattern of the input signal received by the first input / output module 201 when the operation button of the operation device that is the first plant device 301 is pressed, and the input set by the setting unit 70 in advance. It is determined whether or not the waveform pattern of the signal matches.

  Here, the “definition information” is information related to input signals that the input / output modules 201 to 203 receive from the plant equipment 301 to 303 when the programmable controller 400 controls the plant equipment 301 to 303, and the control content, Includes control conditions and waveform pattern of input signal. FIG. 8 shows an example of a waveform pattern in a pulsed bit input signal. Since the bit input signal used in the interface test shown in FIG. 8A and the input signal input to the first input / output module 201 by the first plant equipment 301 shown in FIG. As a pattern matching condition of the waveform pattern determined by the determination unit 80, it is necessary to provide an allowable range of the matching condition regarding the pulse interval and the like. The definition information includes an allowable range of the matching condition regarding the waveform.

<Input module test method using test equipment>
Next, a method in which the test apparatus according to the fourth embodiment of the present invention performs an interface test on the output modules of the input / output modules 201 to 203 will be described with reference to the flowchart of FIG.

  (A) In step S301, the setting unit 70 sets a bit input signal for an interface test. In step S <b> 302, the input / output unit 10 acquires an input signal that the first plant equipment 301 inputs to the first input / output module 201.

  (B) In step S303, the determination unit 80 determines whether the interface test bit input signal set by the setting unit 70 matches the input signal received by the first input / output module acquired by the input / output unit 10. Compare whether or not.

  As described above, the test apparatus 103 according to the fourth embodiment of the present invention matches the bit input signal set for the interface test with the input signal received from the plant equipment by the input / output module to be controlled. By automatically determining whether or not to do so, the work burden on the test operator is dramatically reduced and the test accuracy is also improved. In addition, human error can be significantly reduced.

(Fifth embodiment)
<Configuration of test equipment>
As shown in FIG. 10, the test apparatus according to the fifth embodiment of the present invention provides the definition information about the pulsed bit output signal used for the interface test to the test apparatus according to the first embodiment. A setting unit 80 to be set, an imaging unit 90 that captures an output result output from the plant device by a bit output signal, and a pattern of time series change in a certain period in which the interface test is performed is recognized from the image captured by the imaging unit A recognition unit 11 that defines a coordinate system in the imaging region of the imaging unit, a coordinate acquisition unit 12 that acquires coordinate information in the coordinate system of the plant equipment that is the object to be imaged from the image, and the definition information includes a bit output signal The waveform pattern of the bit output signal and the imaging unit including virtual coordinate information which is the coordinate information of the plant equipment corresponding to the waveform pattern and the bit output signal It is determined whether or not the time-series change pattern in the captured image matches, and further whether or not the virtual coordinate information matches the actual coordinate information that is the coordinate information of the plant equipment after control by the bit output signal. And a determination unit 90 for determination.

  That is, when performing the interface test for the second input / output module 202, the setting unit 70 outputs a bit output signal for the interface test as an output signal for controlling the lamp display of the operating device that is the second plant equipment 302. Set. The imaging unit 90 images the control state of the lamp display by the interface test bit output signal. The coordinate acquisition unit 12 defines a coordinate system in the area imaged by the imaging unit 90, and continuously acquires the coordinates of the lamp display target to be imaged in the defined coordinate system while performing the interface test. The setting unit 70 also defines information on the coordinates of the lamp display corresponding to the bit output signal. The determination unit 80 determines whether or not the waveform pattern of the bit output signal for the interface test matches the change pattern recognized by the recognition unit 11 from the image of the lamp display imaged by the imaging unit 90. Further, the determination unit 80 determines whether or not the coordinate information of the lamp display corresponding to the bit output signal for the interface test matches the coordinate information acquired from the image of the lamp display during the interface test captured by the imaging unit 90. Judgment.

<Output module test method using test equipment>
Next, a method in which the test apparatus according to the fifth embodiment of the present invention performs an interface test on the output modules of the input / output modules 201 to 203 will be described with reference to the flowchart of FIG.

  (A) In step S401, the setting unit 70 displays the lamp pattern which is the second plant equipment 302 corresponding to the bit output signal in the coordinate system defined by the waveform pattern of the bit output signal for interface test and the coordinate acquisition unit 12. Set the coordinate information of the vessel. In step S402, the imaging unit 90 images the lamp display connected to the second input / output module 202 that is the target of the interface test.

  (B) In step S403, the coordinate acquisition unit 12 acquires coordinate information of the lamp display device from the image captured by the imaging unit 90. In step S <b> 404, it is determined whether or not the waveform pattern of the bit output signal set by the setting unit 70 matches the pattern of the change by the test recognized from the image by the recognition unit 11. Further, it is determined whether or not the coordinate information of the lamp display corresponding to the bit output signal set by the setting unit 70 matches the coordinate information of the lamp display acquired from the image by the coordinate acquisition unit 12.

  As described above, the test apparatus 104 according to the fifth embodiment of the present invention has the imaging function even when the plant equipment connected to the input / output module to be subjected to the interface test is located at a remote place. This makes it possible to perform interface tests in a unified manner.

(Sixth embodiment)
<Configuration of test equipment>
As shown in FIG. 12, the test apparatus according to the sixth embodiment of the present invention is configured to set definition information related to the word output signal used for the interface test for the test apparatus according to the first embodiment. Unit 70, image capturing unit 90 that captures plant devices 301 to 303 in a certain period of time during which an interface test is performed, and an image captured by image capturing unit 90 is analyzed to extract character information from a changing area in the image. The image analysis unit 13 and the definition information include virtual character information that is character information output from the plant devices 301 to 303 in response to the word output signal, and the character information extracted by the virtual character information and the image analysis unit 13. It further includes a determination unit 90 that determines whether or not the actual character information matches.

  That is, when performing the interface test for the second input / output module 202, the setting unit 80 outputs the word output signal for the interface test as an output signal for controlling the numerical display of the operating device that is the second plant equipment 302. Set. The setting contents include a waveform pattern of the word output signal and corresponding character information. The imaging unit 90 images the control state of the numerical display by the word output signal for interface test. The image analysis unit 13 analyzes the character information of the area changed by the interface test from the image of the numerical display continuously captured by the imaging unit 90 for a certain period of the interface test. The determination unit 80 determines the identity between the character information set by the setting unit 70 and the character information analyzed by the image analysis unit 13.

<Output module test method using test equipment>
Next, a method in which the test apparatus according to the sixth embodiment of the present invention performs an interface test on the output modules of the input / output modules 201 to 203 will be described with reference to the flowchart of FIG.

  (A) In step S501, the setting unit 70 sets the waveform information of the word output signal for the interface test and the character information displayed by the numerical indicator that is the second plant device 302 corresponding to the word output signal. In step S <b> 502, the imaging unit 90 captures an image of a numerical display that is an interface test target.

  (B) In step S503, the image analysis unit 13 analyzes character information from an area that has changed in a certain period of the interface test in the image captured by the imaging unit 90. In step S <b> 504, the determination unit 80 determines whether the character information set by the setting unit 70 matches the character information analyzed by the image analysis unit 13.

(Seventh embodiment)
<Configuration of test equipment>
As shown in FIG. 14, the test apparatus according to the seventh embodiment of the present invention provides an alarm for outputting the progress of the interface test and the test result by voice to the test apparatus according to the sixth embodiment. A unit 14 is further provided.

  When the alarm unit 14 is finished for all the input / output modules subject to the interface test, and when the interface test for each input / output module is finished, the determination unit 80 indicates that the input / output module to be tested is defective. When a judgment result is output, a buzzer sound, a whistle sound, a human voice, etc. are emitted. Further, the alarm unit 14 notifies the progress status based on the request of the test operator during the interface test.

<Output module test method using test equipment>
Next, a method in which the test apparatus according to the seventh embodiment of the present invention performs an interface test on the output modules of the input / output modules 201 to 203 will be described with reference to the flowchart of FIG. Steps S601 to 604 are the same as steps S501 to 504 according to the sixth embodiment.

  If the character information set by the setting unit 70 matches the character information analyzed by the image analysis unit 13 in step S605, the interface test for the second input / output module 202 is terminated. In step S605, when the character information set by the setting unit 70 and the character information analyzed by the image analysis unit 13 do not match, the alarm unit 14 emits a sound.

  Note that the interface test can be ended after the alarm unit 14 emits sound, or the image analysis unit 13 can perform the image analysis again in step S603.

  As described above, since the test apparatus 106 according to the seventh embodiment of the present invention indicates the status of the interface test by voice, the progress and result of the interface test, etc. even when the display unit 50 is difficult to confirm. Can be easily confirmed.

(Other embodiments)
As mentioned above, although this invention was described by embodiment of this invention, it should not be understood that the statement and drawing which make a part of this indication limit this invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art. It goes without saying that the present invention includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 100, 101, 102, 103, 104, 105 ... Test apparatus 10 ... Input-output part 11 ... Recognition part 12 ... Coordinate acquisition part 13 ... Image analysis 14 ... Alarm part 20 ... Arrangement part 30 ... Conversion part 40 ... Extraction part 50 ... Display unit 60 ... Reporting unit 61 ... Merging unit 70 ... Setting unit 80 ... Determining unit 90 ... Imaging unit 201 ... First input / output module 202 ... Second input / output module 203 ... nth input / output module 301 ... First Plant equipment 302 ... second plant equipment 303 ... n-th plant equipment

Claims (7)

A test apparatus for performing an interface test with the input / output module using a programmable controller that controls plant equipment via the input / output module,
An input / output unit for acquiring an input signal and an output signal transmitted and received by the input / output module via the programmable controller;
An arrangement unit that arranges the values of the plurality of input signals and output signals acquired by the input / output unit in the arrangement order of the terminals of the input / output module;
A conversion unit that rewrites the value of the output signal of the programmable controller to the value of the output signal for interface testing;
Identify the input / output module that is the target of the interface test, input / output circuit information that defines the configuration and characteristics of the input / output circuit using the specified input / output module, and signal identification information that the input / output signal has An extraction unit for extracting input / output signal information that defines control content, control conditions, and control state;
A test unit comprising: a display unit for displaying the input / output signal value acquired by the input / output unit and the input / output signal information arranged by the placement unit, the input / output circuit information extracted by the extraction unit, and the input / output signal information; apparatus. A report unit for creating the interface test history and test results;
The test apparatus according to claim 1, wherein the display unit displays the history and a test result. Further comprising a merging unit for merging the interface test progress and test results with circuit information;
The test apparatus according to claim 1, wherein the display unit displays a progress history and a test result of the interface test merged with the circuit diagram together with a circuit diagram included in the circuit information. A setting unit for setting definition information regarding a pulsed bit input signal used in the interface test;
The input / output module includes: a determination unit that determines whether or not the bit input signal received from the plant device matches the pulsed bit input signal set by the setting unit. Item 4. The test apparatus according to any one of Items 1 to 3. A setting unit for setting definition information related to a pulsed bit output signal used in the interface test;
An imaging unit that images the plant equipment in a certain period in which the interface test is performed;
A recognition unit for recognizing a pattern of time-series change in a certain period in which the interface test is performed, from an image captured by the imaging unit;
A coordinate acquisition unit that defines a coordinate system in the imaging region of the imaging unit, and acquires coordinate information in the coordinate system of the plant equipment that is an object to be captured from the image;
The definition information includes a waveform pattern of the bit output signal and virtual coordinate information which is coordinate information of the plant equipment corresponding to the bit output signal, and the waveform pattern of the bit output signal and the imaging unit capture the image. It is determined whether or not the time-series change pattern in the image matches, and further whether or not the virtual coordinate information matches the actual coordinate information that is the coordinate information of the plant equipment after control by the bit output signal The test apparatus according to claim 1, further comprising a determination unit that determines whether or not. A setting unit for setting definition information regarding a word output signal used for the interface test;
An imaging unit that images the plant equipment in a certain period in which the interface test is performed;
An image analysis unit that analyzes an image captured by the imaging unit and extracts character information from a changing region in the image;
The definition information includes virtual character information that is character information output by the plant device in response to the word output signal, and the virtual character information matches actual character information that is character information extracted by the image analysis unit. The test apparatus according to claim 1, further comprising: a determination unit that determines whether or not to perform.   The test apparatus according to claim 4, further comprising an alarm unit that outputs the progress of the interface test and the test result by voice.

Images