JP7342519B2 - vehicle inspection system - Google Patents

Description

TECHNICAL FIELD The present invention relates to an inspection system and an inspection program that are mainly used in exterior construction inspections and paint inspections of vehicle production lines.

Conventionally, various inspection processes are set on a vehicle production line, and inspections are performed by workers (inspectors) in each inspection process. Generally, information necessary for inspection (inspection items, inspection procedures, etc.) is stored on a server, and this information is downloaded to a terminal device owned by a worker and used for inspection. For example, Patent Document 1 discloses an inspection management system that has a function of notifying an operator (inspector) of the type of vehicle to be inspected.

JP2005-301681A

Incidentally, in the inspection process of the production line, in addition to the inspection process to determine whether the on-vehicle equipment is OK or NG, such as whether or not it operates normally, there is a process to inspect the exterior construction and painting. These exterior construction inspections and painting inspections are conducted in a special way because they must determine where and what type of defects exist, rather than determining whether the product is OK or not. For this reason, up until now, an inspection method has been adopted in which paper check sheets are used to point out defect locations and details.

However, inspection using a check sheet requires the operator to input information by hand, and furthermore, the management of the check sheet is complicated, which places a heavy burden on the operator. Furthermore, since the terminal equipment used in other inspection processes cannot be used, there is a problem that all inspections cannot be completed using the terminal equipment alone. Furthermore, there is also the problem that it is difficult to utilize the results of exterior construction and painting inspections in tasks that are separate from the inspection process, such as compiling and analyzing defective areas.

The vehicle inspection system and inspection program in this case were devised in view of these issues, and one of the purposes is to reduce the burden on workers by eliminating inspections using paper check sheets. In addition, other purposes of the present invention are not limited to this purpose, but also to achieve functions and effects that are derived from each configuration shown in the detailed description of the invention and that cannot be obtained by conventional techniques. be.

(1) The vehicle inspection system disclosed herein is a three-dimensional model for each vehicle type created based on vehicle information including the model and body number of the vehicle subject to exterior installation inspection and paint inspection, and three-dimensional CAD data. The present invention includes a server that stores information on the 3D model, a display that displays the three-dimensional model obtained by communicating with the server, and an inspection terminal that has an input unit that detects an input operation on the display. The three-dimensional CAD data includes shape data, three-dimensional coordinate data, and part names of the vehicle type. In the three-dimensional model, the three-dimensional coordinate data and the part names are linked to visible exterior and interior parts of the target vehicle in a completed vehicle state. The inspection terminal acquires the vehicle information together with the three-dimensional model from the server, displays a plurality of defect types on the display, and displays the defect location of the target vehicle pointed out by the input operation by the operator. In addition to recording the three-dimensional coordinate data and the part name, the defect type selected by the operator's input operation is also recorded together with the defect location, and when the defect type is a defect caused by two parts. , the same number of parts as the number of parts are pointed out as the defective parts .

(2) It is preferable that the inspection terminal rotates the three-dimensional model or displays the three-dimensional model in an enlarged or reduced size according to the input operation by the operator .

( 3 ) It is preferable that the inspection terminal transmits the malfunction location and information recorded together with the malfunction location to the server in association with the vehicle body number as malfunction information. In this case, it is preferable that the server records the vehicle body number and the malfunction information received from the inspection terminal.

According to the disclosed inspection system and inspection program, it is possible to eliminate inspections using paper check sheets and reduce the burden on workers.

FIG. 1 is a block diagram showing an inspection system according to an embodiment. It is a schematic diagram which shows an example of the screen displayed on the display of a terminal for an examination. It is a flowchart which illustrates the process (inspection method) of the inspection program based on embodiment.

A vehicle inspection system and inspection program as an embodiment will be described with reference to the drawings. The embodiments shown below are merely illustrative, and there is no intention to exclude the application of various modifications and techniques not specified in the embodiments below. Each structure of this embodiment can be modified and implemented in various ways without departing from the spirit thereof. Further, they can be selected or combined as necessary.

[1. Inspection system]
The inspection system of this embodiment is a system that is applied to a vehicle production line and performs an exterior installation inspection and a painting inspection. As shown in FIG. 1, the testing system includes a server 2 and a testing terminal 1 that is capable of communicating with the server 2 via a network 3. The inspection terminal 1 is provided to each of a plurality of workers (not shown), and is, for example, a terminal that is operated while being held in the hand, such as a tablet terminal, or a terminal such as an HMD (Head Mounted Display). It is a hands-free interface. FIG. 1 illustrates a plurality of test terminals 1, all of which are configured in the same way.

The inspection terminal 1 is provided with a control device 10, a display 18, and a touch panel 19. The control device 10 is an electronic control device (computer) for controlling images displayed on the display 18. As illustrated in FIG. 1, the control device 10 includes hardware resources such as a processor 11, a memory 12, a storage device 13, an interface device 14, a communication device 15, and a recording medium drive 16. communicably connected to each other.

The processor 11 is a central processing unit that includes a control unit (control circuit), an arithmetic unit (arithmetic circuit), a cache memory (register group), and the like. Further, the memory 12 is a storage device in which programs and data being worked on are stored, and includes, for example, ROM and RAM. On the other hand, the storage device 13 is a storage that stores data and firmware that are retained for a longer period of time than the memory 12, and includes, for example, flash memory and nonvolatile memory.

The interface device 14 controls input/output (I/O) between the control device 10 and the outside. A display 18 and a touch panel 19 are connected to the control device 10 . Information is exchanged with these various devices 18 and 19 via the interface device 14. The communication device 15 is a wireless transmitting/receiving device, and receives (acquires) information from the server 2 as well as transmits information to the server 2 .

The recording medium drive 16 is a reading device that reads information recorded and stored on a recording medium 9 (removable medium) such as an optical disk or a semiconductor memory. The inspection program 4 executed by the control device 10 may be recorded and saved in the memory 12, or may be recorded and saved inside the storage device 13, for example. Alternatively, the inspection program 4 may be recorded and saved on the recording medium 9, and the inspection program 4 written on the recording medium 9 may be read into the control device 10 via the recording medium drive 16.

The server 2 is a computer that includes a processor, memory, storage device, interface device (all not shown), and the like. The server 2 is provided with a database 20 . The database 20 stores vehicle information 21 including the model and body number of the vehicle to be inspected, and a 3D model 22 (three-dimensional model) created for each model of the vehicle to be inspected. The vehicle body number is an identification number (unique number) assigned to each target vehicle.

The 3D model 22 is created based on three-dimensional CAD (Computer Aided Design) data of the model of the target vehicle. This CAD data includes three-dimensional (X, Y, Z) coordinate data and part names in addition to the shape data of the vehicle type. The three-dimensional coordinate data is a coordinate value when one point on the vehicle (for example, the center position of the left front wheel) is set as a reference coordinate (0,0,0). The part name is the name of the part that constitutes the vehicle.

In the 3D model 22, three-dimensional coordinate data and part names are linked to visible external parts (exterior) and interior parts (interior) when the target vehicle is a completed vehicle. Since this inspection is an exterior construction inspection and a painting inspection, it is performed on visible parts. Therefore, it is sufficient that at least the parts names and three-dimensional coordinate data of parts that are visible in the completed vehicle state are linked. Note that the 3D model 22 is created at the stage of developing this inspection system.

FIG. 2 is an example of a screen displayed on the display 18 of the testing terminal 1. The display 18 is a device that displays the 3D model 22 acquired by communicating with the server 2, and is, for example, a flat display such as a liquid crystal display or an organic EL display. The touch panel 19 (input unit) is an input device for detecting an operator's input operation (touch, pinch, swipe, etc.) on the surface of the display 18. The inspection terminal 1 of this embodiment is provided as a touch panel display in which a display 18 and a touch panel 19 are integrated.

As shown in FIG. 2, the display screen of the display 18 is divided into a plurality of areas. The largest area 18a is provided approximately in the center of the display screen of the display 18, and the 3D model 22 is displayed in this area 18a. Moreover, above the area 18a, an area 18b where the vehicle body number is displayed and an area 18c where the selected inspection process is displayed are provided. An area 18d in which the name of the worker in charge of the inspection is displayed is provided below the area 18a. Further, on the right side of the area 18a, there is provided an area 18e for displaying icons related to inspection items. In addition to these areas 18a to 18e, displays for selecting vehicle type, model, and body color, icons for selecting inspection parts, etc. may be provided.

In the area 18e illustrated in FIG. 2, icons K1 to K8 indicating eight defect types are provided. Examples of the defect types include scratches, stains, steps, parallelism, lifting, gaps, water leaks, and paint. Further, this area 18e may be provided with an icon (C) for canceling an operation, an icon (R) for restarting the operation from the beginning, and the like. FIG. 2 illustrates a case where the defect type indicated by the icon K1 is selected.

In the inspection terminal 1 of this embodiment, the 3D model 22 displayed in the area 18a of the display 18 rotates, moves, The display is enlarged or reduced. Thereby, the entire vehicle to be inspected can be inspected. Further, the display 18 is provided with an icon for selecting an interior display or an exterior display (exterior display) of the target vehicle, and the display of the 3D model 22 is switched according to the icon selected by the operator.

The inspection terminal 1 acquires the 3D model 22 and the vehicle information 21 from the server 2, and records the defective location of the target vehicle pointed out by the operator's input operation together with the three-dimensional coordinate data and the part name. For example, if a worker finds a scratch on the left front door of the target vehicle, he or she selects an icon indicating "scratch" from among the icons K1 to K8 on the inspection terminal 1, and Tap position 23 (faulty location), which corresponds to the scratched location on the door. In addition, if you find a step on the front and rear left doors of the target vehicle, select the icon indicating "step" from among the icons K1 to K8 on the inspection terminal 1, and Tap position 24 (faulty location) corresponding to the stepped location. Note that steps and gaps are defects caused by two parts, so they can be pointed out by tapping two points.

When the inspection terminal 1 detects this tapping operation, it records the three-dimensional coordinate data of the tapped position (faulty location) and the part name (in this case, "left front door"). In this embodiment, the defect type (flaw) selected by the operator's input operation is recorded together with the defect location. Furthermore, the inspection terminal 1 of this embodiment links the malfunction location and the information recorded together with the malfunction location (three-dimensional coordinate data, part name, malfunction type) to the vehicle body number as "defect information" and sends it to the server 2. Send. The server 2 records the vehicle body number received from the inspection terminal 1 and the defect information in a linked state. The information recorded in the server 2 can also be obtained from communication devices other than the inspection terminal 1, so that other workers can manage and analyze the defect information.

The functions of the inspection program 4 (computer program) for carrying out the above-mentioned exterior construction inspection and painting inspection are schematically shown in FIG. This inspection program 4 is provided with an acquisition section 4A, a display section 4B, a detection section 4C, and a recording section 4D. Each of these elements may be realized by an electronic circuit (hardware), or some of these functions may be provided as hardware and other parts may be provided as software.

The acquisition unit 4A communicates with the server 2 and acquires vehicle information 21 and 3D model 22 from the server 2. The display unit 4B displays the 3D model 22 acquired by the acquisition unit 4A on the display 18. The detection unit 4C detects the operator's input operation on the display 18. Note that the input operations detected here include at least a tap operation that points out a defective location. The recording unit 4D determines the indicated defective location based on the input operation detected by the detection unit 4C, and records this defective location together with the three-dimensional coordinate data and the part name. Furthermore, the recording unit 4D of this embodiment also records the type of defect at the same time.

[2. flowchart]
FIG. 3 is a flowchart illustrating a process (inspection process) of the inspection program 4 that is executed by the inspection terminal 1 described above. This flowchart is executed for each target vehicle that undergoes an exterior installation inspection and a paint inspection.

In step S1, communication is performed with the server 2, and the above vehicle information 21 and 3D model 22 stored in the server 2 are acquired (acquisition step). In step S2, the acquired 3D model 22 is displayed on the display 18 of the inspection terminal 1 (display step). In the display step, for example, as shown in FIG. 2, the 3D model 22 is displayed in a predetermined area 18a, and rotated or enlarged/reduced by the operator's input operation. Further, in the display step, the interior display and the exterior display (exterior display) are switched according to an input operation.

In step S3, the operator's input operation on the display 18 on which the 3D model 22 is displayed is detected (detection step). In the detection step, the icons K1 to K8 of the defect type selected by the operator, the tapped position, etc. are detected. As a result, the defective location is pointed out and determined. In step S4, the defect location of the target vehicle pointed out by the input operation is recorded together with the three-dimensional coordinate data and the part name (recording step). In the recording process of this embodiment, the defect type is also recorded at the same time. In addition, the inspection program of this embodiment sends the defect location and various information recorded in the recording process to the server 2 as "defect information" in association with the vehicle body number (step S5, output process).

[3. effect]
(1) According to the above-mentioned inspection system, simply by operating the display 18 of the inspection terminal 1 and pointing out the defective part, the operator will be able to see the location (three-dimensional coordinate data) and part name of the defective part. The inspection burden on workers can be reduced. Additionally, compared to the conventional method of inspection using paper check sheets, it is easier to aggregate, manage, and analyze defective locations.

Furthermore, since the 3D model 22 is created based on 3D CAD data including 3D coordinate data and part names, there are fewer preparatory steps than when creating a 3D model based on drawings, photographs, etc. (Recording of coordinate values and part names, etc.) is not required. Therefore, the burden on developers who develop inspection systems can be significantly reduced.

(2) In the above-described inspection system, the 3D model 22 displayed on the display 18 of the inspection terminal 1 is rotated or enlarged or reduced in accordance with the operator's input operation. In this way, the orientation and size of the displayed 3D model 22 can be easily changed in accordance with the operator's input operation, so that work efficiency can be improved and the inspection burden on the operator can be further reduced.

(3) In the above-mentioned inspection system, multiple defect types (icons K1 to K8) are displayed on the display 18 of the inspection terminal 1, so the operator selects the corresponding defect type from among these defect type displays. Just choose. In the inspection terminal 1, the defect type selected by the operator's input operation is recorded together with the defect location, so that the inspection burden on the operator can be further reduced.

(4) In the above-mentioned inspection system, the defect information recorded on the inspection terminal 1 is linked to the vehicle body number and sent to the server 2, and the server 2 receives the vehicle body number and defect information received from the inspection terminal 1. Information is recorded. In this way, since the server 2 can manage defect information in association with the vehicle body number, information can be easily shared with workers in other processes (for example, workers who manage and analyze defects).

(5) According to the above-described inspection program 4, it is possible to cause the inspection terminal 1 to carry out the above-mentioned inspection process in the exterior construction inspection and the painting inspection, so that the inspection burden on the worker can be reduced. In addition, since the inspection terminal 1 can be used to perform inspections during exterior construction inspections and painting inspections, it can be used in other inspection processes (for example, conventional inspection processes to determine OK or NG). You can use your existing terminal equipment as is. Alternatively, the inspection program 4 can be executed by a conventional terminal device. In either case, all tests can be completed using only a common terminal device (inspection terminal 1), which can contribute to shortening the time required for testing and reducing costs.

[4. others]
The above-mentioned inspection system and inspection program are examples. For example, in the test terminal 1 described above, a touch panel 19 is provided integrally with the display 18, but the means (input unit) for detecting input operations on the display 18 is not limited to the touch panel, and includes keyboard input, mouse input, voice input, etc. A means for detecting an input operation such as an input may be provided. Furthermore, the 3D model 22 displayed on the display 18 of the inspection terminal 1 may be configured so that the display direction is switched instead of being displayed in a rotated manner. The method of displaying the 3D model 22 on the display 18 and the display contents (divisions of the regions 18a to 18e, etc.) are not limited to those described above.

The above-mentioned defect information includes the defect location, three-dimensional coordinate data, part name, and defect type, but it is sufficient that it includes at least the defect location, three-dimensional coordinate data, and part name. Furthermore, the method of managing defect information in the server 2 is not limited to the above-mentioned method.

The inspection terminal 1 is not limited to a tablet terminal. When using an HMD as the inspection terminal 1, the 3D model 22 is displayed on a display worn on the head, and the sensor (input section) detects the operation of the 3D model by the operator's gesture, thereby implementing the above-described embodiment. It can be configured similarly to. Alternatively, when a touch-operated projector is used as the inspection terminal 1, an input operation on a display projected on a surface such as a wall or a vehicle body can be detected, so that a structure similar to that of the above-described embodiment can be achieved. can do.

Note that the above-mentioned inspection system can be applied to vehicles subject to exterior installation inspection and painting inspection, and may be implemented in processes other than the "exterior installation inspection and painting inspection" among the inspection processes of the production line. In other words, the inspection process in which the inspection system is used is not limited. For example, in the process of assembling a seat or steering wheel, if a worker discovers a flaw in a visually visible interior part of a completed car, the inspection system may be used for inspection. Operate the display 18 of the terminal 1 and select "Exterior construction inspection and painting inspection", tap the position corresponding to the location where the flaw was found on the 3D model 22 displayed on the display 18, and record the defective location. You may. In this way, by taking advantage of the feature that the inspection process of the production line can be completed using the common inspection terminal 1, it is possible to carry out "exterior construction inspection and painting inspection" in other inspection processes, and from which inspection stage It is also possible to determine whether there is a problem.

1 Inspection terminal 2 Server 3 Network 4 Inspection program 4A Acquisition unit 4B Display unit 4C Input unit 4D Recording unit 9 Recording medium 10 Control device 11 Processor 12 Memory 13 Storage device 14 Interface device 15 Communication device 16 Recording medium drive 17 Internal bus 18 Display 18a to 18e Area 19 Touch panel (input section)
20 Database 21 Vehicle information 22 3D model (three-dimensional model)
23, 24 position (faulty location)

Claims (3)

a server that stores vehicle information including the model and body number of a vehicle subject to exterior construction inspection and paint inspection, and a three-dimensional model for each vehicle model created based on three-dimensional CAD data;
comprising a display that displays the three-dimensional model obtained by communicating with the server, and an inspection terminal that has an input unit that detects input operations on the display,
The three-dimensional CAD data includes shape data of the vehicle model, three-dimensional coordinate data, and part names,
In the three-dimensional model, the three-dimensional coordinate data and the part names are linked to the exterior and interior parts of the target vehicle that are visible in a completed vehicle state,
The inspection terminal acquires the vehicle information together with the three-dimensional model from the server, displays a plurality of defect types on the display, and displays the defect location of the target vehicle pointed out by the input operation by the operator. In addition to recording the three-dimensional coordinate data and the part name, the defect type selected by the input operation by the worker is recorded together with the defect location;
If the defect type is a defect caused by two parts, as many points as the number of parts are pointed out as the defective parts.
A vehicle inspection system characterized by: The vehicle inspection according to claim 1, wherein the inspection terminal rotates the three-dimensional model or displays the three-dimensional model in an enlarged or reduced size according to the input operation by the operator. system . The inspection terminal transmits the malfunctioning part and information recorded together with the malfunctioning part to the server in association with the vehicle body number as malfunction information,
3. The vehicle inspection system according to claim 1 , wherein the server records the vehicle body number and the defect information received from the inspection terminal .

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