JP6904722B2 - Goods inspection equipment - Google Patents

Description

The present invention relates to an article inspection device for inspecting the quality of an object to be inspected, for example, meat, fish, processed foods, pharmaceuticals and the like.

Conventionally, as an article inspection device for inspecting the quality of an object to be inspected, a weight measuring device, an X-ray inspection device, a metal detection device and the like are known. Such a conventional weight measuring device measures the mass of the object to be transported, determines whether or not the obtained measured value is within the reference range, and is a non-defective product within the reference range and other non-defective products. We are sorting out good products. Further, the conventional X-ray inspection apparatus irradiates the transported object with X-rays and detects whether or not foreign matter is mixed in the object to be inspected from the amount of the irradiated X-rays transmitted. .. Further, in the conventional metal detection device, an alternating magnetic field is generated in the transport line, the object to be inspected is passed through the alternating magnetic field, and whether or not metal is mixed in from the detection output when passing through the magnetic field. Is being detected.

As such an article inspection device, there is known one provided with a display device in which a touch panel is superposed on a display screen portion for displaying inspection results (see, for example, Patent Document 1).

The article inspection device described in Patent Document 1 is configured so that the screen display of the display screen unit can be switched based on the touch signal from the touch panel, while other external information can be input without input from the touch panel. It is configured so that the screen display of the display screen can be switched even when there is a problem.

As other external information, input information from a detection sensor such as an inclination sensor or a vibration sensor provided in the article inspection device and input information from a camera or a microphone provided in the article inspection device are used.

Japanese Unexamined Patent Publication No. 2015-182794

However, in the article inspection device described in Patent Document 1, only when an object or a person passes in the vicinity of the article inspection device, this is detected and input as other external information, and an unnecessary display screen portion is displayed. The screen display may be switched.

The present invention has been made in view of the above circumstances, and is capable of preventing unnecessary screen display switching when the screen display is switched without contacting the article inspection device. The purpose is to provide an inspection device.

The article inspection device according to the present invention determines the quality of the inspected object based on an inspection unit that outputs a detection signal indicating the quality state of the conveyed inspected object and a determination target value based on the detection signal. In an article inspection device provided with a display unit that displays a screen containing the quality determination result obtained, an operator is visually recognizing the display unit at a position closer to a predetermined distance or less with respect to the display unit. A screen including the pass / fail determination result displayed on the display unit is set in advance according to whether or not the visual condition is detected by the visual condition detection unit and the visual condition detection unit that detects the visual condition. The display control unit controls the display unit so as to switch between the first screen and the second screen different from the first screen.

With this configuration, in the article inspection device according to the present invention, whether or not the visual state detection unit has detected the visual state in which the operator is visually recognizing the display unit at a position closer to or less than a predetermined distance with respect to the display unit. The screen displayed on the display unit can be switched between the preset first screen and the second screen according to the above.

Therefore, the article inspection device according to the present invention switches the screen including the pass / fail judgment result displayed on the display unit based on the line of sight of the worker without the worker actively performing any operation, and is an object. Since the screen displayed on the display does not switch just by passing by or a person in the vicinity of the article inspection device, unnecessary screen display switching can be performed when switching the screen display without contacting the article inspection device. It can be prevented from being done.

In the article inspection device according to the present invention, the visual state detection unit detects the visual state by detecting that the worker is gazing at the screen displayed on the display unit for a predetermined time or longer. Is preferable.

With this configuration, the article inspection device according to the present invention detects the visual state by detecting that the operator is gazing at the screen displayed on the display unit for a predetermined time or longer. It is possible to accurately detect that the operator is visually recognizing the display unit at a position approaching a predetermined distance or less.

In the article inspection device according to the present invention, it is preferable that the visual state detection unit is composed of a line-of-sight sensor that detects a person's line of sight.

With this configuration, in the article inspection device according to the present invention, the visual inspection state detection unit is composed of a line-of-sight sensor that detects a person's line of sight, so that an operator can move to a position closer to a predetermined distance or less with respect to the display unit. It is possible to more accurately detect that the display unit is being visually recognized.

In the article inspection device according to the present invention, the visual state detection unit determines whether or not the visual state is in the visual state based on an image pickup unit that images a human face and an image obtained by imaging the image pickup unit. It is preferable to have a portion.

With this configuration, in the article inspection device according to the present invention, the visual state detection unit determines whether or not the visual state detection unit is in the visual state based on the image pickup unit that images the human face and the image obtained by the image pickup of the image pickup unit. Since it has a determination unit, it is possible to more accurately detect that the operator is visually recognizing the display unit at a position closer than a predetermined distance to the display unit.

In the article inspection device according to the present invention, the display control unit displays a screen displayed on the display unit depending on whether or not the visual state is detected, provided that the quality determination result is poor. It is preferable to enable switching control for switching between the first screen and the second screen.

With this configuration, the article inspection device according to the present invention uses the first screen as a screen displayed on the display unit depending on whether or not a visual state is detected, provided that the quality determination result is poor. Since the switching control for switching to and from the second screen is enabled, the screen display is switched only when the operator tries to visually recognize or operate the display unit for confirmation because the pass / fail judgment result is bad. be able to.

In the article inspection device according to the present invention, the display unit displays the screens displayed on the display unit according to whether or not the visual state performed by the display control unit is detected, the first screen and the second screen. It is preferable to have a switching operation unit for switching between valid and invalid switching control for switching between the screen and the screen.

With this configuration, the article inspection device according to the present invention is effective in switching control for switching the screen displayed on the display unit between the first screen and the second screen depending on whether or not the visual state is detected. Since it has a switching operation unit for switching between and invalid, it is possible to switch between valid and invalid switching control according to the operator's discretion.

In the article inspection device according to the present invention, the first screen is composed of a screen on which detailed information is displayed, and the second screen has information simpler than that of the first screen. The display control unit is composed of a screen displayed larger than the screen, and the display control unit displays the screen displayed on the display unit as the second screen on condition that the visibility state is detected by the visibility state detection unit. It is preferable to control the display unit so as to switch from the first screen to the first screen.

With this configuration, in the article inspection device according to the present invention, on the condition that the visual inspection state is detected by the visual inspection state detection unit, the screen displayed on the display unit can be displayed with simpler information than the first screen. It is possible to switch from the second screen, which is displayed larger than the screen of, to the first screen, which displays detailed information. As a result, the operator can confirm detailed information when he / she is gazing at the display unit. Further, when the worker is not in the vicinity of the article inspection device, simple information is displayed on the display unit larger than that of the first screen, so that the operator can easily easily operate even at a position away from the article inspection device. You can check the information.

In the article inspection device according to the present invention, the brightness of the first screen is preferably lower than the brightness of the second screen.

With this configuration, in the article inspection device according to the present invention, the brightness of the first screen is lower than the brightness of the second screen. Therefore, when the first screen is displayed on the display unit, power saving should be achieved. When the second screen is displayed on the display unit, even an operator who is away from the article inspection device can easily confirm the information on the second screen.

In the article inspection device according to the present invention, it is preferable that the information displayed on each of the first screen and the second screen can be arbitrarily selected by the operator.

With this configuration, the article inspection device according to the present invention can display the information requested by the operator because the information displayed on each of the first screen and the second screen can be arbitrarily selected by the operator. It can be done and convenience can be improved.

The present invention can provide an article inspection device capable of preventing unnecessary switching of the screen display when the screen display is switched without contacting the article inspection device.

It is a schematic block diagram of the article inspection apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows the detailed screen which is displayed on the display operation part of the article inspection apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows the simple screen which is displayed on the display operation part of the article inspection apparatus which concerns on 1st Embodiment of this invention. It is a flowchart which shows the flow of the screen switching process executed in the article inspection apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows the modification of the detail screen which is displayed on the display operation part of the article inspection apparatus which concerns on 1st Embodiment of this invention. It is a schematic block diagram of the article inspection apparatus which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the flow of the screen switching process executed in the article inspection apparatus which concerns on 3rd Embodiment of this invention. It is a schematic block diagram of the article inspection apparatus which concerns on 4th Embodiment of this invention. It is a flowchart which shows the flow of the screen switching process executed in the article inspection apparatus which concerns on 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)
The article inspection device 1 according to the first embodiment of the present invention is incorporated in a production line (not shown) in which an inspected object W such as raw meat, fish, processed food, or pharmaceutical product is conveyed, and the inspected object W is incorporated. It is intended to inspect foreign substances and defects mixed in, or to inspect whether the weight of the object W to be inspected is within the specified range.

In FIG. 1, the article inspection device 1 includes a transport unit 2, an inspection unit 3, a display operation unit 4 as a display unit, a determination unit 5, a comprehensive control unit 6, and a line-of-sight sensor 20 as a visual state detection unit. And have.

The transport unit 2 sequentially transports the inspected object W of the type set in the display operation unit 4 in advance, and is composed of, for example, a belt conveyor arranged horizontally with respect to the apparatus main body.

Further, the transport unit 2 is driven by a drive motor (not shown) so as to transport the carried-in object W in the direction of the arrow in FIG. 1 (in the right direction in FIG. 1) at a predetermined transport speed set in advance. It has become.

The inspection unit 3 outputs a detection signal according to the type and size of the foreign matter contained in the object W to be inspected, or a detection signal according to the weight of the object W to be inspected. When the article inspection device 1 is configured as a metal detection device, the inspection unit 3 generates an alternating magnetic field of a predetermined frequency and outputs a signal corresponding to a change in the magnetic field due to the object W to be inspected passing through the alternating magnetic field. It has a simple structure. The metal contained in the object W to be inspected may be magnetized by a magnetizer such as a magnet, and the residual magnetism of the magnetized metal may be detected by a magnetic sensor.

Further, when the article inspection device 1 is configured as an X-ray inspection device, the inspection unit 3 is composed of an X-ray source and an X-ray detector, and is subject to X-ray irradiation from the X-ray source. The X-ray detector detects the X-rays that have passed through the inspection object W, and outputs a detection signal according to the amount of the transmission. The X-ray detector includes, for example, a plurality of photodiodes arranged in a line in a direction orthogonal to the transport direction of the object W to be transported by the transport unit 2, and a scintillator provided on the photodiode. An array-shaped line sensor is used. Such an X-ray detector receives X-rays transmitted through the object W to be inspected by a scintillator, converts the light into light, converts the light into an electric signal by a photodiode arranged below the scintillator, and outputs the light. It has become.

Further, when the article inspection device 1 is configured as a weight measuring device, the inspection unit 3 is a weighing mechanism such as an electromagnetic equilibrium mechanism, which is arranged below the weighing table with a part of the transporting unit 2 as a weighing table. The configured load sensor measures the load of the object W to be inspected on the weighing table. The load sensor may be any scale mechanism capable of measuring the weight, and may be composed of a scale mechanism such as a differential transformer mechanism or a strain gauge mechanism, for example.

The display operation unit 4 is composed of a touch panel that has both an input operation function and a display function, and the input operation includes a setting operation of the type of the object W to be conveyed to be conveyed by the transfer unit 2 and a foreign matter of the object W to be inspected. Various setting operations and instruction operations related to detection and weighing are performed. Further, the display operation unit 4 is provided with various operation buttons such as an operation button for instructing the start of operation of the article inspection device 1, a stop button for instructing the stop of operation of the article inspection device 1, and a menu button.

In addition, the display operation unit 4 displays various display operations such as a set value when the type of the object W to be inspected is set, an instruction value when the instruction operation is performed, and various determination results. It has become like.

The display operation unit 4 may be configured such that the input operation function and the display function are independent. In this case, a plurality of keys, switches, and the like for input operation for setting and instruction are provided for the input operation function. At the same time, a liquid crystal display or the like may be provided for the display function.

Based on the detection signal from the inspection unit 3, the determination unit 5 determines whether or not the inspected object W contains a foreign substance, or whether or not the weight of the inspected object W is within a predetermined range, and the like. In addition to performing the pass / fail judgment, the display operation unit 4 displays a screen including the inspection result (pass / fail judgment result).

The comprehensive control unit 6 controls the entire article inspection device 1, and includes a storage unit 7, a control unit 8, and a display control unit 9.

In the storage unit 7, the control unit 8 stores various programs for controlling the article inspection device 1, and the determination unit 5 stores various parameters for determining the quality of the inspected object W.

Further, the storage unit 7 stores the quality determination result (inspection result OK or NG) of the determination unit 5 and the inspection data (weight measurement value, detection signal in the object to be inspected) based on the detection signal of the inspection unit used for the determination. The maximum value, the maximum value in the object to be inspected for which the detection signal has been signal-processed, etc.), the waveform data based on the detection signal, etc. are stored as inspection result data, and the operation history such as the inspection time and alarm occurrence time is also stored. It has become.

The control unit 8 executes a program stored in the storage unit 7 to change the parameters of the determination unit 5, perform various controls of the article inspection device 1, and the like.

The display control unit 9 creates display data of the screen to be displayed on the display operation unit 4 according to the operation of the display operation unit 4 or according to the detection result of the line-of-sight sensor 20, and displays the screen based on the created display data. It is controlled so as to be displayed in the part 4.

Here, FIGS. 2 and 3 show an example of a screen when the article inspection device 1 displayed on the display operation unit 4 is a weight measuring device. The screen shown in FIG. 2 (hereinafter referred to as “detailed screen”) 41 is composed of a screen on which detailed information is displayed. Specifically, whether or not the inspection is in progress, the quality judgment result, the weight, the ability, and the like. In addition to various displays such as the inspection product name, total number, average value, standard deviation, and NG rate, a menu button, an operation button, and a stop button are displayed. The detailed screen 41 of the present embodiment constitutes the first screen in the present invention.

Unlike the detail screen 41, the screen shown in FIG. 3 (hereinafter referred to as “simple screen”) 42 is composed of a screen on which information simpler than that of the detail screen 41 is displayed. Further, the simple screen 42 is a screen in which each information is displayed larger than the detailed screen 41. The simple screen 42 of the present embodiment constitutes a second screen in the present invention.

In addition to the various information described above, the information displayed on each of the detailed screen 41 and the simple screen 42 includes, for example, an operation history and, when the article inspection device 1 is an X-ray inspection device, various types such as an X-ray transmission image. It can be arbitrarily selected by the operator from the information group. The selection of each information to be displayed on each of the detail screen 41 and the simple screen 42 can be performed by the setting operation in the operation display unit 4.

In the present embodiment, the detailed screen 41 of FIG. 2 and the simple screen 42 of FIG. 3 can be switched according to the detection result of the line-of-sight sensor 20.

That is, the display control unit 9 performs a display operation so as to switch the screen displayed on the display operation unit 4 between the detailed screen 41 of FIG. 2 and the simple screen 42 of FIG. 3 according to the detection result of the line-of-sight sensor 20. The unit 4 is controlled.

The line-of-sight sensor 20 detects a state in which the operator is visually recognizing the display operation unit 4 at a position closer than a predetermined distance to the display operation unit 4 (hereinafter, this state is referred to as a "visual state"). It has become.

Specifically, the line-of-sight sensor 20 detects that the operator is gazing at the screen displayed on the display operation unit 4 for a predetermined time (for example, about 0.5 seconds) or longer, thereby visually recognizing the above-mentioned visual recognition. Detect the condition. When the line-of-sight sensor 20 detects the visual state, it transmits a signal indicating that the visual state has been detected to the general control unit 6.

Further, when the line-of-sight sensor 20 does not detect the line-of-sight of the operator for a predetermined time longer than the above-mentioned predetermined time after detecting the visual state, the line-of-sight sensor 20 comprehensively controls a signal indicating that the visual state has not been detected. It is designed to be transmitted to the part 6. The above-mentioned specified time is set to a time at which the operator can determine that the display operation unit 4 is away from the operable position.

Here, "a position closer to a predetermined distance or less with respect to the display operation unit 4" means a position where the display operation unit 4 can be operated, and specifically, at a position facing the display operation unit 4. In addition, it refers to a position where the operator has approached the article inspection device 1 to a distance where the display operation unit 4 can be operated.

The line-of-sight sensor 20 is composed of an infrared LED (Light Emitting Diode) and an infrared camera, and detects a person's line of sight by observing the reflection of infrared rays emitted from the infrared LED in the pupil or the cornea with the infrared camera. Can be used.

Next, the screen switching process executed by the article inspection device 1 according to the present embodiment will be described with reference to the flowchart of FIG. The screen switching process shown in FIG. 4 is repeatedly executed at predetermined time intervals after the power of the article inspection device 1 is turned on until the power is turned off.

As shown in FIG. 4, the control unit 8 determines whether or not the inspected object W is being inspected (step S1). Whether or not the inspected object W is being inspected can be determined based on, for example, the operation state of the operation button provided on the display operation unit 4. When the control unit 8 determines that the inspected object W is not being inspected, the control unit 8 ends the screen switching process.

On the other hand, when the control unit 8 determines that the object W to be inspected is being inspected, the display control unit 9 determines whether the screen displayed on the display operation unit 4 is a simple screen 42 as shown in FIG. Whether or not it is determined (step S2).

When the display control unit 9 determines that the screen is the simple screen 42, the control unit 8 determines whether or not the visual recognition state is detected based on the signal from the line-of-sight sensor 20 (step S3). If the control unit 8 has not detected the visual state, the control unit 8 ends the screen switching process.

On the other hand, when the control unit 8 determines that the visual state has been detected, the display control unit 9 displays the screen displayed on the display operation unit 4 from the simple screen 42 shown in FIG. 3 to the detailed screen 41 shown in FIG. (Step S4) to end the screen switching process.

On the other hand, if the display control unit 9 determines in step S2 that the screen is not the simple screen 42, the control unit 8 determines whether or not the visual recognition state is not detected based on the signal from the line-of-sight sensor 20 ( Step S5).

When the control unit 8 determines that the visual state has not been detected, the display control unit 9 displays the screen displayed on the display operation unit 4 as a simple screen shown in the detailed screen 41 to FIG. 3 shown in FIG. Switching to 42 (step S6) ends the screen switching process.

As described above, in the article inspection device 1 according to the present embodiment, whether or not the visual recognition sensor 20 has detected a visual state in which the operator is visually recognizing the display operation unit 4 at a position where the display operation unit 4 can be operated. Depending on the situation, the screen displayed on the display operation unit 4 can be switched between the detailed screen 41 (see FIG. 2) and the simple screen 42 (see FIG. 3).

Therefore, in the article inspection device 1 according to the present embodiment, the screen displayed on the display operation unit 4 does not switch only when an object or a person passes near the article inspection device 1. Therefore, the article inspection device 1 When the screen display is switched in a non-contact manner, it is possible to prevent unnecessary switching of the screen display.

Further, since the article inspection device 1 according to the present embodiment switches the screen displayed on the display operation unit 4 based on the line of sight of the operator, the operator positively performs some operation, for example, on the operation display unit. The screen can be switched without pressing the screen switching operation button of.

Further, the article inspection device 1 according to the present embodiment detects the visual state by detecting that the operator is gazing at the screen displayed on the display operation unit 4 for a predetermined time or longer by the line-of-sight sensor 20. Therefore, it is possible to accurately detect that the operator is visually recognizing the display operation unit 4 at a position where the display operation unit 4 can be operated.

Further, in the article inspection device 1 according to the present embodiment, the screen displayed on the display operation unit 4 is displayed on the display operation unit 4 on the condition that the visual inspection state is detected by the line-of-sight sensor 20, rather than the detailed screen 41 (see FIG. 2). It is possible to switch from the simple screen 42 (see FIG. 3) in which the simple information is displayed larger than the detailed screen 41 to the detailed screen 41 in which the detailed information is displayed. As a result, the operator can confirm detailed information when he / she is gazing at the display operation unit 4. Further, when the worker is not in the vicinity of the article inspection device 1, simple information is displayed on the display operation unit 4 larger than the detailed screen 41, so that the operator can easily move away from the article inspection device 1. You can check simple information.

In the present embodiment, the line-of-sight sensor 20 is configured to measure the predetermined time and the specified time, but the present invention is not limited to this, and for example, the control unit 8 and the display control unit 9 measure the time of the predetermined time and the specified time. It may be configured to be performed.

Further, in the present embodiment, an example of switching the screen displayed on the display operation unit 4 between the detailed screen 41 of FIG. 2 and the simple screen 42 of FIG. 3 according to the detection result of the line-of-sight sensor 20 has been described. ..

On the other hand, the screens displayed on the display operation unit 4 may be switched between screens having different brightness and screens having different saturation depending on the detection result of the line-of-sight sensor 20. In this case, for example, when the line-of-sight sensor 20 detects the visual state, the screen is switched to a low-brightness screen or a low-saturation screen, and when the visual state is not detected, the work is at a position away from the article inspection device 1. It is preferable to switch to a screen with high brightness or a screen with high saturation so that the person can stand out.

Further, as shown in FIG. 5, in the article inspection device 1 according to the present embodiment, the brightness of the detailed screen 41 may be lower than the brightness of the simple screen 42. In this case, since the brightness of the detail screen 41 is lower than the brightness of the simple screen 42, power saving can be achieved when the detail screen 41 is displayed on the display operation unit 4, and the simple screen 42 can be displayed on the display operation unit 4. When is displayed, even an operator who is away from the article inspection device 1 can easily confirm the information on the simple screen 42.

When the article inspection device 1 is an X-ray inspection device, the screen displayed on the display operation unit 4 is a screen for displaying a moving image of an X-ray transmission image according to the detection result of the line-of-sight sensor 20. The configuration may be such that the screen for displaying a still image is switched.

(Second Embodiment)
FIG. 6 is a diagram showing an article inspection device according to a second embodiment of the present invention.

The article inspection device 101 according to the present embodiment is different from the article inspection device 1 according to the first embodiment in that it includes a camera 110 and an image processing unit 120 as a visual state detection unit, but other The configuration is the same. In the following, description of the same configuration of the first embodiment will be omitted by using the same reference numerals as those of the first embodiment.

As shown in FIG. 6, the article inspection device 101 includes a camera 110 and an image processing unit 120 as a visual state detection unit. The camera 110 is adapted to capture an image of the worker's face in order to detect the line of sight of the worker. The camera 110 is composed of an image pickup lens, a CCD image pickup element, a CCD control unit, a signal processing circuit, and the like, and transmits an optical image of a subject obtained through the image pickup lens to the image processing unit 120 as an image pickup signal. The camera 110 in the present embodiment constitutes the imaging unit in the present invention.

The image processing unit 120 is adapted to generate face image data converted into digital image data after performing various image processing based on the image pickup signal from the camera 110. The image processing unit 120 detects the line-of-sight direction of the operator using the generated face image data.

Specifically, the image processing unit 120 detects the face region from the face image data by pattern matching using the face image stored in the storage unit 7 in advance. Face images from a plurality of directions are stored in the storage unit 7, and the orientation of the face is also measured based on the plurality of face images. Next, the image processing unit 120 detects the eye region by extracting black circular regions at equal intervals from the central axis of the detected face region.

Next, the image processing unit 120 detects the line-of-sight direction of the operator by matching the direction of the eyeball measured from the image of the eye region with the direction of the face measured by pattern matching. As a result, the image processing unit 120 can detect that the operator is gazing at the screen displayed on the display operation unit 4 for a predetermined time (for example, about 0.5 seconds) or longer. Therefore, the image processing unit 120 can detect the visual state. The line-of-sight direction detection method is not limited to the above-mentioned method.

Further, when the image processing unit 120 does not detect the line-of-sight direction of the operator for a predetermined time longer than the above-mentioned predetermined time after detecting the visual state, it determines that the visual state has not been detected. The above-mentioned specified time is set to a time at which the operator can determine that the display operation unit 4 is away from the operable position. The image processing unit 120 in the present embodiment constitutes the determination unit in the present invention.

The article inspection device 101 according to the present embodiment sets the screens displayed on the display operation unit 4 as a detailed screen 41 (see FIG. 2) and a simple screen 42 (see FIG. 2) according to the detection result of the visual state in the image processing unit 120. 3) and switch to.

As described above, the article inspection device 101 according to the present embodiment can obtain the following effects in addition to the effects in the first embodiment. That is, the article inspection device 101 according to the present embodiment determines whether or not the article inspection device 101 is in the visual state based on the camera 110 that captures a human face and the face image obtained by the imaging of the camera 110 as the visual state detection unit. Since the image processing unit 120 for determining is provided, it is possible to more accurately detect that the operator is visually recognizing the display operation unit 4 at a position where the display operation unit 4 can be operated.

(Third Embodiment)
The article inspection apparatus according to the third embodiment of the present invention will be described with reference to FIG. 7.

The article inspection device 1 according to the present embodiment has the same configuration as that of the first embodiment, and is displayed on the display operation unit 4 depending on whether or not the visual recognition state is detected by the line-of-sight sensor 20. The switching control for switching between the detailed screen 41 and the simple screen 42 is switched between valid and invalid depending on whether or not a predetermined condition is satisfied.

Here, the operator often confirms the details on the screen of the display operation unit 4 after a defect occurs as a result of the quality determination. Therefore, when the quality determination result is good, it is less necessary to switch the screen of the display operation unit 4. Therefore, the screen of the display operation unit 4 can be switched only after a defect occurs as the quality determination result. The screen can be switched efficiently.

Therefore, in the article inspection device 1 according to the present embodiment, the display control unit 9 determines whether or not the visual inspection state is detected by the line-of-sight sensor 20 on the condition that the quality determination result by the determination unit 5 is poor. Accordingly, switching control for switching the screen displayed on the display operation unit 4 between the detailed screen 41 and the simple screen 42 (hereinafter, simply referred to as “screen switching control”) is enabled.

Therefore, in the article inspection device 1 according to the present embodiment, if the quality determination result by the determination unit 5 is not defective, the screen switching control described above is not enabled.

FIG. 7 is a flowchart of the screen switching process executed by the article inspection device 1 according to the present embodiment. The screen switching process shown in FIG. 7 is repeatedly executed at predetermined time intervals after the power of the article inspection device 1 is turned on until the power is turned off.

As shown in FIG. 7, the control unit 8 determines whether or not the inspected object W is being inspected (step S21). When the control unit 8 determines that the inspected object W is not being inspected, the control unit 8 ends the screen switching process.

On the other hand, when the control unit 8 determines that the object W to be inspected is being inspected, the display control unit 9 determines whether or not the screen switching control is effective (step S22). When the display control unit 9 determines that the screen switching control is not effective, the display control unit 9 determines whether or not the quality determination result by the determination unit 5 is defective (NG determination) (step S23). When the display control unit 9 determines that the quality determination result by the determination unit 5 is not defective (NG determination), the display control unit 9 ends the screen switching process.

On the other hand, when the display control unit 9 determines that the quality determination result by the determination unit 5 is defective (NG determination), the screen switching control is enabled (step S24), and then the process proceeds to step S25. do.

On the other hand, when the display control unit 9 determines in step S22 that the screen switching control is effective, the display control unit 9 shifts to the process of step S25 without performing the processes of steps S23 and S24.

In step S25, the display control unit 9 determines whether or not the screen displayed on the display operation unit 4 is a simple screen 42 as shown in FIG. 3 (step S25).

When the display control unit 9 determines that the screen is the simple screen 42, the control unit 8 determines whether or not the visual recognition state is detected based on the signal from the line-of-sight sensor 20 (step S26). When the control unit 8 determines that the visual state has not been detected, the control unit 8 ends the screen switching process.

On the other hand, when the control unit 8 determines that the visual state has been detected, the display control unit 9 displays the screen displayed on the display operation unit 4 from the simple screen 42 shown in FIG. 3 to the detailed screen 41 shown in FIG. (Step S27) to end the screen switching process.

On the other hand, if the display control unit 9 determines in step S25 that the screen is not the simple screen 42, the control unit 8 determines whether or not the visual recognition state is not detected based on the signal from the line-of-sight sensor 20 ( Step S28).

When the control unit 8 determines that the visual state has not been detected, the display control unit 9 displays the screen displayed on the display operation unit 4 as a simple screen shown in the detailed screen 41 to FIG. 3 shown in FIG. Switch to 42 (step S29). After that, the display control unit 9 disables the screen switching control (step S30) and ends the screen switching process.

As described above, the article inspection device 1 according to the present embodiment can obtain the following effects in addition to the effects in the first embodiment. That is, the article inspection device 1 according to the present embodiment displays the screen displayed on the display operation unit 4 as a detailed screen depending on whether or not the visual recognition state is detected on the condition that the quality determination result is poor. Since the switching control for switching between the 41 and the simple screen 42 is enabled, the screen is displayed only when the operator visually recognizes or operates the display operation unit 4 for confirmation because the pass / fail judgment result is defective. You can switch the display.

(Fourth Embodiment)
The article inspection apparatus according to the fourth embodiment of the present invention will be described with reference to FIGS. 8 and 9.

The article inspection device 201 according to the present embodiment has the same configuration as that of the first embodiment, and similarly to the third embodiment, it depends on whether or not the visual recognition state is detected by the line-of-sight sensor 20. The switching control for switching the screen displayed on the display operation unit 4 between the detailed screen 41 and the simple screen 42 (hereinafter, simply referred to as “screen switching control”) can be switched between valid and invalid. ..

Further, in the article inspection device 201 according to the present embodiment, as shown in FIG. 8, a changeover operation switch 4a as a changeover operation unit for switching between valid and invalid of the above-mentioned changeover control is provided in the display operation unit 4. There is. When the changeover operation switch 4a is turned on, the display operation unit 4 transmits a signal indicating that the changeover operation switch 4a is on to the general control unit 6. The display control unit 9 enables the screen switching control when the switching operation switch 4a is turned on. On the other hand, when the changeover operation switch 4a is turned off, the display control unit 9 disables the changeover control of the screen.

FIG. 9 is a flowchart of the screen switching process executed by the article inspection device 201 according to the present embodiment. The screen switching process shown in FIG. 9 is repeatedly executed at predetermined time intervals after the power of the article inspection device 201 is turned on until the power is turned off.

As shown in FIG. 9, the control unit 8 determines whether or not the inspected object W is being inspected (step S31). When the control unit 8 determines that the inspected object W is not being inspected, the control unit 8 ends the screen switching process.

On the other hand, when the control unit 8 determines that the object W to be inspected is being inspected, the display control unit 9 determines whether or not the screen switching control is effective based on the signal from the display operation unit 4. (Step S32). When the display control unit 9 determines that the screen switching control is not effective, the display control unit 9 ends the screen switching process.

On the other hand, when the display control unit 9 determines that the screen switching control is effective, the display control unit 9 determines whether or not the screen displayed on the display operation unit 4 is a simple screen 42 as shown in FIG. (Step S33).

When the display control unit 9 determines that the screen is the simple screen 42, the control unit 8 determines whether or not the visual recognition state is detected based on the signal from the line-of-sight sensor 20 (step S34). If the control unit 8 has not detected the visual state, the control unit 8 ends the screen switching process.

On the other hand, when the control unit 8 determines that the visual state has been detected, the display control unit 9 displays the screen displayed on the display operation unit 4 from the simple screen 42 shown in FIG. 3 to the detailed screen 41 shown in FIG. (Step S35) to end the screen switching process.

On the other hand, when the display control unit 9 determines in step S33 that the screen is not the simple screen 42, the control unit 8 determines whether or not the visual recognition state is not detected based on the signal from the line-of-sight sensor 20 ( Step S36).

When the control unit 8 determines that the visual state has not been detected, the display control unit 9 displays the screen displayed on the display operation unit 4 as a simple screen shown in the detailed screen 41 to FIG. 3 shown in FIG. Switching to 42 (step S37) ends the screen switching process.

As described above, the article inspection device 201 according to the present embodiment can obtain the following effects in addition to the effects in the first embodiment. That is, the article inspection device 201 according to the present embodiment switches the screen displayed on the display operation unit 4 between the detailed screen 41 and the simple screen 42 depending on whether or not the visual state is detected. Since it has a switching operation switch 4a for switching between valid and invalid, it is possible to switch between valid and invalid of screen switching control according to the operator's discretion.

As described above, the article inspection device according to the present invention has an effect that it is possible to prevent unnecessary switching of the screen display when the screen display is switched without contacting the article inspection device. It is useful as an article inspection device for inspecting the quality of the object to be inspected.

1, 101, 201 Article inspection equipment 2 Transport unit 3 Inspection unit 4 Display operation unit (display unit)
4a Switching operation switch (switching operation unit)
5 Judgment unit 6 Comprehensive control unit 7 Storage unit 8 Control unit 9 Display control unit 20 Line-of-sight sensor (visual state detection unit)
41 Detail screen (first screen)
42 Simple screen (second screen)
110 camera (imaging unit)
120 Image processing unit (judgment unit)
W Inspected object

Claims (9)

It is obtained by determining the quality of the inspected object based on the inspection unit (3) that outputs a detection signal indicating the quality state of the conveyed inspected object (W) and the determination target value based on the detection signal. In the article inspection device (1) provided with the display unit (4) for displaying the screen including the pass / fail judgment result,
A visual state detection unit (20) that detects a visual state in which an operator is visually recognizing the display unit at a position closer to a predetermined distance or less with respect to the display unit.
Depending on whether or not the visual state is detected by the visual state detection unit, the screen including the quality determination result displayed on the display unit is displayed on the preset first screen (41) and the first screen (41). An article inspection device including a display control unit (9) that controls the display unit so as to switch between a screen of 1 and a second screen (42) different from the screen of 1. The first aspect of the present invention, wherein the visual state detecting unit detects the visual state by detecting that the worker is gazing at the screen displayed on the display unit for a predetermined time or longer. Article inspection equipment. The article inspection device according to claim 1 or 2, wherein the visual state detection unit is composed of a line-of-sight sensor (20) that detects a person's line of sight. The visual state detection unit includes an imaging unit (110) that captures a human face, a determination unit (120) that determines whether or not the visual state is present based on an image obtained by imaging the imaging unit, and the like. The article inspection apparatus according to claim 1 or 2, wherein the article inspection apparatus has. The display control unit displays the screens displayed on the display unit as the first screen and the second screen depending on whether or not the visual recognition state is detected, on condition that the quality determination result is poor. The article inspection apparatus according to any one of claims 1 to 4, wherein a switching control for switching between the screen and the screen is enabled. The display unit switches the screen displayed on the display unit between the first screen and the second screen depending on whether or not the visual state performed by the display control unit is detected. The article inspection apparatus according to any one of claims 1 to 4, further comprising a switching operation unit (4a) for switching between valid and invalid. The first screen is composed of a screen on which detailed information is displayed.
The second screen is composed of a screen in which information simpler than that of the first screen is displayed larger than that of the first screen.
The display control unit switches the screen displayed on the display unit from the second screen to the first screen on condition that the visibility state is detected by the visual state detection unit. The article inspection apparatus according to any one of claims 1 to 6, wherein the article is controlled. The article inspection device according to claim 7, wherein the brightness of the first screen is lower than the brightness of the second screen. The article according to any one of claims 1 to 8, wherein the information displayed on each of the first screen and the second screen can be arbitrarily selected by the operator. Inspection equipment.

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