KR20220076792A - Method for determining whether connectors are fastened in automobile manufacturing line - Google Patents

Abstract

The present invention relates to a method for determining whether a connector is fastened in an automobile production line and a feedback method, and by determining in real time whether a connector is normally fastened to an assembly target vehicle being assembled in an automobile production line, detects an abnormal fastening connector, and recognizes the abnormal fastening by an operator An object of the present invention is to provide a method of determining whether a connector is fastened in an automobile production line and providing a feedback method to induce a connector re-tightening operation.

Description

{Method for determining whether connectors are fastened in automobile manufacturing line}

The present invention relates to a method for determining whether a connector is fastened in an automobile production line and to a feedback method, and more particularly, to a method for determining in real time whether a connector is completely fastened in an automobile production line and giving feedback to a worker to recognize it.

A car is equipped with a number of parts such as an electric control unit (ECU), a sensor, and an actuator, and cooperative control is performed between the parts in order to safely and effectively implement various functions using these parts.

For the above cooperative control, each part must be electrically connected to each other, and a wiring harness is used for such electrical connection.

Connectors for mechanical fastening and electrical connection are attached to both ends of the wiring harness and to the parts side, and these connectors are usually applied as a female connector and a male connector that are fastened to each other.

Due to the electrification of automobiles, the use of wiring harnesses and connectors is also increasing as more various types of parts are mounted on the vehicle compared to the prior art.

Meanwhile, with the development of production technology, there are more areas that can be automated in the automobile production process, but considering the characteristics of the wiring harness, it is impossible for an automated robot to align the wiring harness and fasten the connector. For this reason, wiring harnesses and connectors are still being done manually.

In general, after automobile production is completed, the quality control department checks whether each function operates normally. In this case, the operator takes time to remove the parts to refasten the connector, and production costs may increase due to damage to parts in the process of removing/reinstalling the parts.

In addition, in the case of some vehicles, the vehicle is delivered to the customer without recognizing that the connector is not fastened at the production plant, and there is a problem that the connector is found by the customer afterwards. And if such a connector is a connector of an important safety part, a big problem that is directly related to the life of the customer occurs.

The present invention was devised in view of the above points, and by determining in real time whether the connector of the vehicle to be assembled is normally fastened in a vehicle production line, detects the abnormal fastening connector, and recognizes the abnormal fastening connector by the operator, so that the abnormal fastening connector is refastened An object of the present invention is to provide a method of determining whether a connector is fastened in an automobile production line and providing a feedback method to induce work.

Accordingly, the present invention is: The sound of the feedback unit for the n-th process line worn by the operator, the real-time connector fastening sound generated when the operator fastens the connector of the vehicle to be assembled that has entered the n-th process line among the process lines of the automobile production line A first step of receiving an input through an input device; a second step of comparing the real-time connector fastening sound received through the feedback unit for the nth process line with a normal connector fastening sound of the nth process line stored in a sound database; When it is determined that the real-time connector fastening sound of the n-th process line is different from the normal connector fastening sound of the n-th process line, the fastening information output unit installed in the n-th process line is operated to notify the operator that there is an abnormal fastening connector A third step of recognizing; provides a method for determining whether a connector is fastened in an automobile production line, including a feedback method.

In the third step, when it is determined that the real-time connector fastening sound of the n-th process line is the same as the normal connector fastening sound of the n-th process line, the fastening information output unit installed in the n-th process line is operated to provide a connector to the operator. It is characterized in that it recognizes that the fastening is normally performed.

In addition, when it is determined that the real-time connector fastening sound of the n-th process line is different from the normal connector fastening sound of the n-th process line, a warning output unit provided in the feedback unit for the n-th process line is operated to inform the operator of abnormal fastening It characterized in that it further comprises the step of recognizing that there is a connector.

In addition, the feedback unit for the n-th process line is characterized in that the sound input device is activated when the connector to be fastened to work in the n-th process line and the connector to be fastened are within a predetermined distance.

And, in the third step, information on whether the connector is normally fastened is outputted to a display device among the fastening information output units of the nth process line and displayed.

In addition, in the second step, whenever the real-time connector fastening sound and the normal connector fastening sound are compared, information on whether the connector is normally fastened is stored in the server memory, and the vehicle to be assembled passes a predetermined reference point in the n-th process line. Then, it is determined whether there is an abnormally fastened connector among the fastening target connectors of the nth process line based on the information on whether the connector is properly fastened or not stored in the server memory device, and if there is an abnormally fastened connector, a sound generating device and a sound generating device of the fastening information output unit It is characterized in that by operating the lighting device, the operator recognizes that there is an abnormal fastening connector.

In addition, it is determined whether there is an unworked connector that has not even been fastened among the abnormal fastening connectors, and if there is an unworked connector, the position information of the unworked connector is output and displayed on the display device of the fastening information output unit. do.

In addition, if the real-time connector tightening sound input in the first step includes noise higher than or equal to a predetermined reference frequency, the second step is performed after filtering the frequency region higher than the reference frequency.

In addition, the feedback unit for the n-th process line is a feedback unit having a unique identification number matching the unique identification number of the n-th process line among the feedback units for each process line used in the automobile production line, and the n-th process line is This is a process line that requires connector fastening in the automobile production line.

Through the means for solving the above problems, the present invention provides the following main effects.

First, instead of checking whether the connector is fastened after completing automobile production, it is determined in real time whether the connector is normally fastened in the automobile production line and re-tightened the connector if there is an abnormal fastening connector by notifying the operator of the judgment result. can induce work.

Second, it is possible to prevent cost loss due to reassembly work and reassembly work for connector fastening after completion of automobile production, and to prevent damage to parts due to unnecessary part removal and re-installation occurring in reassembly work. have.

Third, it is possible to prevent automobile quality problems caused by poor connector connection, and consumer complaints and safety accidents caused by the same.

1 is a view showing a system configuration for implementing a method for determining whether a connector is fastened in an automobile production line and a feedback method according to the present invention;
2 is an exemplary view showing the contents outputted to the display device of the fastening or not output unit in the automobile production line according to the present invention;
3 is an exemplary view showing a reference point for each process line of the automobile production line according to the present invention;
4 is a flowchart illustrating an example of a process of determining whether a connector is fastened in an automobile production line and a feedback process according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Matters expressed in the accompanying drawings may be different from the forms actually implemented in the drawings schematically for easy explanation of the embodiments of the present invention.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

An automobile production line is usually composed of numerous process lines, and workers to execute the process work designated for each process line assemble the parts they need to work on when the vehicle to be assembled enters the process.

In addition, the automobile production line is equipped with a system that can determine which process line the vehicle to be assembled is currently being assembled, and such a system is called RTLS (Real Time Locating System).

Specifically, the assembly target vehicle has a communication terminal attached thereto, and provides location information of the vehicle while exchanging signals with communication units installed in various places on the automobile production line through the communication terminal. That is, in the automobile production line, it is possible to grasp the location information of the vehicle to be assembled through real-time communication. The communication terminal is attached to each assembly target vehicle for the RTLS.

At least one assembly process of the automobile production line includes a work step of fastening the connector, and the connector fastening operation is performed by a predetermined operator at a predetermined location (ie, a predetermined process line) of the automobile production line. do.

The present invention relates to a method for detecting an abnormally fastening connector by determining in real time whether a connector of an assembly target vehicle being assembled in an automobile production line is normally fastened, and inducing a re-tightening operation of the abnormally fastened connector.

As shown in FIG. 1, a system for implementing a method for determining whether a connector is fastened in an automobile production line and a feedback method according to the present invention is a connector fastening operation in a predetermined process line requiring a connector fastening operation among the process lines of an automobile production line The feedback unit 100 worn by the worker performing ) and the like.

Here, among the process lines of the automobile production line, a predetermined process line requiring a connector fastening operation will be referred to as an n-th process line. The n may be an integer such as 1,2,3.... A process line requiring a connector fastening operation before the nth process line is referred to as an n-1 process line, and a fastening operation after the nth process line This necessary process line is called an n+1th process line.

The feedback unit 100 is to enable the feedback on the connector fastening work by receiving and providing a connector fastening sound generated when the operator performs the connector fastening work, such as the operator's fingers, palms, backs of hands or wrists, etc. It may be of a small size that can be worn and attached to the hand.

The feedback unit 100 is configured to receive a feedback on the connector fastening sound for the connector fastening operation, and specifically, the sound input device 110 , the sound generating device 121 , and the lighting device 122 . , the vibration generating device 123 , the feedback unit communication unit 130 , the feedback unit power supply unit 140 , and the feedback unit storage unit 150 may be configured to include.

The server 200 includes a location coordinate database 210 for each vehicle part, a connector fastening work instruction database 220 for each process line, a sound database 230, a production line database 240, and a unique identification number database 250 for each feedback unit. ), and a determination control unit 260 , in addition to a server storage device 270 for storing data generated in real time, such as whether the connector is normally connected, a server communication unit 280 for communication, and a server power supply unit for power supply (290) and the like.

The location coordinate database 210 for each vehicle part stores absolute coordinate information of each connector in the vehicle based on digital 3D modeling data used in the preceding stage of vehicle development.

The connector fastening work instruction database 220 for each process line stores work information on work (including connector fastening work) to be performed by the operator for each process line of the automobile production line.

The sound database 230 stores information such as a normal fastening sound of each connector in the vehicle, an abnormal fastening sound (a fastening sound when incompletely fastening), and a connector fastening sound generated to include some noise.

The production line database 240 includes the location of each process line in which each process operation in the automobile production line is performed, the speed of the conveyor for transporting the vehicle to be assembled, and the length of each process line based on the moving direction of the conveyor. Various information necessary for operation and management of the production line is stored.

The unique identification number database 250 for each feedback unit is one-hot encoding for the feedback unit 100 that is matched one-to-one with each process line (ie, the n-th process line) in which the connector fastening operation is performed within the automobile production line. (One Hot Encoding) information is stored.

In addition, in the automobile production line, a fastening information output unit 310 including a sound generating device 311 , a lighting device 312 , a display device 313 , etc. in order to notify the operator when non-tightening or incomplete coupling of the connector is detected. is provided, and in addition, a communication unit 320 for each process line for communication, a production line storage device 330 for real-time data storage, and a production line power supply unit 340 for providing driving power are provided.

The sound input device 110 of the feedback unit 100 is a device that receives a sound (ie, a connector tightening sound) generated when a connector is fastened in an automobile production line, and specifically, only the sound generated during a connector fastening operation is selected It may be a directional microphone for recording.

More specifically, as the directional microphone, a unidirectional directional microphone that responds greatly to a sound generated from a set predetermined direction and becomes less responsive to the sound as it goes away from the direction axis is used. For example, it may be configured to receive only the sound in front of the microphone. can

Since various tool sounds and various warning sounds for worker safety are constantly generated in the automobile production line, the connector tightening sound must be input as accurately as possible.

Therefore, the sound input device 110 preferably uses a directional microphone to more accurately receive the connector tightening sound generated when the operator tightens the connector, but it is also possible to use a non-directional microphone if noise filtering technology is supported. do. That is, the non-directional microphone may be used as the sound input device 110 according to the surrounding conditions of the connector fastening operation. A non-directional microphone is a microphone that generally receives sound from all directions.

The feedback unit communication unit 130 is configured to be able to communicate with the communication terminal of the assembly target vehicle being assembled in the automobile production line, and can grasp the location information of the assembly target vehicle being assembled in the production line through the feedback unit communication unit 130 . have. Also, the feedback unit communication unit 130 may transmit and receive signals to and from the vehicle server 200 . The communication terminal may be a terminal attached to each assembly target vehicle for the RTLS.

The warning output unit 120 of the feedback unit 100 is for providing feedback information on whether the connector is normally fastened to the operator. The warning output unit 120 may include at least one of the sound generating device 121 , the lighting device 122 , and the vibration generating device 123 .

The sound generating device 121 may be configured to generate a warning sound to stimulate the operator's hearing, the lighting device 122 may be configured to generate lighting to stimulate the operator's vision, and the vibration generating device ( 123) may be configured to generate vibrations that stimulate the operator's tactile sense.

When a connector that the operator has not fastened (that is, an unworked connector) is detected, at least one of the sound generating device 121 , the lighting device 122 , and the vibration generating device 123 is operated to provide the operator with a connector re-tightening operation can induce

The feedback unit power supply unit 140 is configured to supply power to the sound input unit 110 , the warning output unit 120 , the feedback unit communication unit 130 , and the feedback unit storage unit 150 .

The feedback unit storage device 150 is a memory for storing necessary information. The feedback unit storage device 150 stores a unique identification number (ID) determined in the feedback unit 100 .

In the automobile production line, a unique identification number (ID) is given to each process line, and the feedback unit 100 is produced by one-hot encoding with a unique identification number (ID) for each process line of the production line. Avoid cross-talk with other processes on the line and with other feedback units.

The unique identification number (ID) information for each feedback unit 100 is matched one-to-one (1:1) with the unique identification number (ID) information for each process line of the automobile production line to uniquely identify each feedback unit of the server 200 It can be built into the number database 250 .

A unique identification number (ID) for each feedback unit 100 is one-hot encoded by matching one-to-one with a predetermined unique identification number (ID) of each process line, and one-hot encoding information for each feedback unit 100 is provided for each feedback unit By being stored in the unique identification number database 250, based on the information stored in the unique identification number database 250 for each feedback unit, the process line matched with each feedback unit 100 (that is, the n-th where the connector fastening operation is included) process line) can be judged in real time.

The decision control unit 260 of the server 200 is a process in which the feedback unit communication unit 130 and the communication unit 320 for each process line installed for each process line of the automobile production line and the server communication unit 280 exchange signals with each other. Through this, it is possible to determine whether the feedback unit 100 is being used in a process other than a predetermined process by matching the unique identification number (ID). At this time, the determination control unit 260 makes a determination with a preset time period. In addition, if the one-hot encoding of the unique identification number (ID) is mismatched at this time, the determination control unit 260 transmits an action message to the manager of the automobile production line.

The feedback unit communication unit 130 and the communication unit 320 for each process line of the production line exchange signals with each other. The communication unit 320 for each process line is installed for each process line of the automobile production line and may be fixed at a predetermined position, respectively. The communication unit 320 for each process line may be one of communication units such as an antenna and a repeater.

The communication unit 320 for each process line fixed to the automobile production line and the feedback unit 100 that always move according to the movement of the operator continue real-time communication at a cycle preset by the manager, and through this real-time communication, the feedback unit ( 100) of the location coordinates and distance can be calculated.

The number of communication units 320 for each process line installed in an automobile production line is different according to an algorithm for calculating the position coordinates and distance of the feedback unit 100 . For example, if a positioning algorithm such as a triangulation method is used, at least two or more communication units 320 for each process line fixed to the automobile production line are required, and at this time, the n-th process line (that is, connector fastening work) It is not necessary to install two or more communication units 320 for each process line in the process line). Specifically, one communication unit for each process line may be installed in the n-th process line, and one communication unit for each process line may be installed and used in the n-1 th process line or the n+1 process line.

Identifying the coordinates of the location of the feedback unit 100 mounted on the hand of the operator means that the operator approaches the connector to be fastened in the connector fastening process, or the basis data for determining whether the operation is omitted without approaching the connector do.

Since digital 3D (Dimensional) verification is performed in the preceding stage of vehicle development, absolute coordinates of each connector position of the vehicle can be obtained from 3D modeling data of the vehicle, and the obtained information is stored in the server 200 and converted into a database.

Specifically, the server 200 is provided with a location coordinate database 210 for each vehicle part, and the location coordinate database 210 for each vehicle part stores absolute coordinate information of each connector in the vehicle. The absolute coordinates may be coordinate values based on a predetermined reference point of the vehicle.

By matching the absolute coordinates of each connector in the vehicle with the coordinates of the position where the feedback unit 100 was located for the connector fastening process, it is determined whether the connector fastening operation is omitted.

As described above, the position coordinates of the feedback unit 100 are identified in real time, and the real-time position coordinates of the connector to be fastened are obtained by comparing the position coordinates of the connectors to be fastened in the vehicle to be fastened in the connector fastening process. When it is located within a predetermined distance from the real-time location coordinates of , the sound input device 110 is activated to prepare to receive a connector tightening sound. The predetermined distance may be set as a distance at which a connector fastening operation of an operator is possible.

The reason for activating the sound input device 110 only under certain conditions as described above is that, when the sound input device 110 receives continuous input, the power consumption of the feedback unit power supply unit 140 is large, and the input is This is because the input data is not valid even if it is received.

After the sound input device 110 is activated, as the connector fastening operation is performed, the sound input by the sound input device 110 is transmitted to the server 200 .

The determination control unit 260 provided in the server 200 determines whether unnecessary noise is included in the sound input from the sound input device 110 of the feedback unit 100 other than the connector tightening sound.

If the frequency range of the noise included in the sound is greater than or equal to a preset reference frequency, the determination control unit 260 performs filtering on a frequency range other than the predetermined frequency range of the normal connector tightening sound, and in this case, the sound input device Noise filtering is also performed for a frequency region higher than the reference frequency included in the sound input at 110 .

Here, the noise means various noises that may be generated in the automobile production line, such as various guide sounds and warning sounds, tool operation sounds and machine operation sounds, and these noise sounds are stored in a database in advance and stored in the server 200 .

In addition, connectors of various specifications are used for each vehicle part in an automobile production line, and a fastening sound may be partially different for each connector specification. Therefore, in advance, the connection sound for each connector specification applied to the vehicle is converted into a database and stored in the server 200 .

At this time, the sound obtained by intentionally synthesizing the normal connector fastening sound and some noise noise is also converted into a database, so that the accuracy of the connector can be improved when determining whether the connector is properly fastened.

The determination control unit 260 determines whether the connectors are normally fully fastened on the basis of the noise filtering completed sound, and stores in the server memory device 270 whether each connector is normally fastened for each process line.

The determination control unit 260 sends the corresponding information (ie, whether the connector is normally fastened) to the communication unit 320 for each process line of the production line through the server communication unit 280 whenever it is determined whether the connectors are normally fastened for each process line. information), and after storing the information in the production line storage device 330, output and display whether the connector is normally fastened on the display device 313 among the connection information output unit 310 of the production line to display the operator visually make it recognizable.

When determining that the real-time connector fastening sound of the n-th process line is different from the normal connector fastening sound of the n-th process line stored in the sound database 230 , the determination control unit 260 determines that the fastening information output unit 310 is different. ) of at least the display device 313 to let the operator know that there is an abnormally fastened connector, and at this time, when the operator recognizes the information provided to the display device 313 and proceeds with rework, the reworked connector is not fastened. Information about the information may be updated and output to the display device 313 .

In addition, the determination control unit 260, when determining that the real-time connector fastening sound of the n-th process line is the same as the normal connector fastening sound of the n-th process line, the fastening information output unit 310 installed in the n-th process line At least during the operation, the display device 313 is operated to notify the operator that the connector fastening operation has been normally performed.

An example of the information output to the display device 313 is as shown in FIG. 2 . In FIG. 2 , OK means a working situation in which the connector is normally fastened, and NG means a working situation in which the connector is not normally fastened. Specifically, NG is output in consideration of at least two or more situations.

First, the first situation is a case in which the worker performs the connector fastening operation, but incomplete fastening in which the fastening sound is different from the normal connector fastening sound by a certain level or more occurs. And, the second situation is a case in which the connector fastening non-work occurs, in which the operator's hand does not even move to the periphery of the fastening target connector to be assembled. In this case, both the incompletely fastened connector and the unworked connector as described above may be collectively referred to as an abnormally fastened connector.

The vehicle to be assembled under assembly in the n-th process line of the automobile production line moves to the next process, the n+1 process line, through the conveyor of the production line in a predetermined moving direction and moving speed. In this case, the moving speed of the vehicle to be assembled may be determined according to the moving speed of the conveyor.

And, between the nth process line and the n+1th process line, a predetermined reference point P may be determined as a point in the moving direction of the vehicle to be assembled. The reference point (P) may be preset by an administrator, and the location information may be stored in the production line storage device (330). The determination control unit 260 of the server 200 may receive information on the reference point P for each process line from the production line memory device 330 .

Referring to FIG. 3 , when the length of the n-th process line running between the n-1 th process line and the n+1 th process line in the automobile production line is L, the vehicle to be assembled is moved to the n+1 th process line. In order to provide warning information visually and aurally to the operator before arrival and at the same time provide warning information at the time when the connector fastening operation in the nth process line is completed, the reference point P is 2/L < standard It may be determined that the point P < L.

That is, the reference point P is determined as a point of the n-th process line and may be determined as a point exceeding 1/2 of the section of the n-th process line.

The time at which the assembly target vehicle passes the reference point P may be calculated based on the time when the assembly target vehicle enters the n-th process line and the speed of the conveyor.

When it is determined that the vehicle to be assembled has passed the reference point P, it is determined whether all connectors to be fastened to be fastened in the n-th process line are normally fastened.

When all connectors to be fastened in the n-th process line are normally fastened, the vehicle to be assembled is immediately moved to the n+1 process line, and even one of the connectors to be fastened in the n-th process line has an abnormally fastened connector. If there is, the assembly target vehicle recognizes that there is a problem in the fastening target connector in charge of the operator by operating the sound generating device 311 and the lighting device 312 among the fastening information output unit 310 of the production line, and inspects and re-checks the connector. Encourage them to proceed with the fastening work.

In this case, the operation of the conveyor for moving the vehicle may be temporarily stopped. Also, at this time, the sound generating device 311 generates a predetermined warning sound, and the lighting device 312 generates illumination through a traffic light lamp having two or more colors.

When inducing inspection and re-tightening of an abnormally fastened connector, in the case of an unworked connector that has not even attempted a fastening work, by outputting the position information of the unworked connector to the display device 313 of the production line, the operator can use the unworked connector shorten the search time to minimize it.

In addition, if the operator does not visually and aurally recognize the operation of the fastening information output unit 310 of the production line, if there is an abnormal fastening connector including an unworked connector, the feedback unit through the communication unit 320 for each process line of the production line By sending a predetermined signal indicating that there is an unworked connector to the communication unit 130 and operating at least one of the warning output unit 120 components of the feedback unit 100 through the predetermined signal, an abnormal fastening connector is provided to the operator Recognize that it remains and induce the operator to check and re-tighten the connector.

The process of determining in real time whether the connector is normally fastened in the automobile production line using the system configured as described above and giving feedback to the operator to recognize it may proceed as follows.

4 is a flowchart illustrating an example of a method of determining whether a connector is fastened in an automobile production line and a feedback method.

4, when the assembly operation of the vehicle to be assembled in the automobile production line is started, the unique identification number (ID) of each feedback unit 100 is the unique identification number (ID) of the n-th process line during the process of the production line ( ID) and it is determined (S100).

At this time, it is determined whether or not the unique identification number (ID) matches based on the information stored in the unique identification number database 250 for each feedback unit of the server 200, and the unique identification number (ID) of the feedback unit 100 and the second If the unique identification number (ID) of the n process line does not match, a warning message and an action message are transmitted to the system manager (S110).

When the unique identification number (ID) of the feedback unit 100 and the unique identification number (ID) of the n-th process line match, the vehicle to be assembled enters the n-th process line (S120).

While the communication unit 130 of the feedback unit 100 worn by the operator communicates with the communication unit 320 for each process line of the production line, it is recognized in real time where the feedback unit 100 is located in the assembly target vehicle. At the same time, the conveyor movement speed of the production line and the connector location coordinates of the assembly target vehicle are acquired from the production line database 240 of the server 200 and the location coordinate database 210 for each vehicle part (S130).

Next, it is determined whether the operator's hand is within a certain distance from the connector to be fastened to be worked in the n-th process line (S140), and the location coordinate information of the feedback unit 100 identified in step S130 is stored in the server storage device 270 is transmitted and stored, and the position coordinate information of the connector to be fastened, which is determined to be not approached by the operator's hand through the determination control unit 260, is stored in the server memory device 270 (S150).

As a result of the determination in step S140, if the distance between the operator's hand and the connector is within a predetermined predetermined distance, the sound input device 110 of the feedback unit 100 is activated (S160).

Next, when the operator fastens the connector to be fastened one by one in the n-th process line, the sound input device 110 of the feedback unit 100 worn on the worker's hand receives the connector fastening sound and the feedback unit communication unit 130 ) transmits the connector engagement sound information to the determination control unit 260 of the server 200 (S170).

The determination control unit 260 determines whether noise is mixed in the received connector tightening sound information, and if the frequency range of the noise mixed in the connector tightening sound is higher than or equal to a predetermined reference frequency, filtering of the frequency range higher than the reference frequency is performed Proceed (S180).

The determination control unit 260 determines whether the connector is normally fully fastened based on the connector fastening sound on which noise filtering has been completed, and stores information on whether the connector is fully fastened in the server memory device 270 ( S190 ). The determination control unit 260 stores in the server memory device 270 information on whether or not each connector for each process line of the automobile production line is normally fastened.

The determination control unit 260, each time the information on whether or not the connector is completely fastened to the server storage device 270 is stored in the server memory device 270, the information (that is, the communication unit 320 for each process line of the production line through the server communication unit 280) , information on whether the connector is fully fastened), and the information received by the communication unit 320 for each process line is stored in the production line storage device 330, and then the display device ( 313) (S200).

Next, the determination control unit 260 determines whether the vehicle to be assembled has passed a preset reference point P of the n-th process line (S210).

As a result of the determination in step S210, if the assembly target vehicle has passed the reference point P, it is determined whether all connectors to be fastened in the n-th process line are normally fastened (S220), and the assembly target vehicle is the reference point P ), the process proceeds to step S130 again.

When it is determined that all connectors are normally fastened in step S220 based on the information on whether the connectors are properly fastened or not stored in the production line storage device 330 in step S200, the vehicle to be assembled enters the n+1 process line make it (S230).

When it is determined that at least one of the connectors is abnormally fastened in the step S220 based on the information on whether the connector is completely fastened or not stored in the production line memory device 330 in the step S200, the fastening information output unit 310 of the production line By operating the middle sound generating device 311 and the lighting device 312, the operator recognizes that there is a connector with a missing fastening operation or an incompletely fastening connector to induce a connector re-tightening operation (S240).

In addition, if the operator does not recognize the operation of the fastening information output unit 310 in the step S240, if the connector re-tightening operation does not proceed due to this, the feedback unit communication unit through the communication unit 320 for each process line of the production line ( 130), by sending a predetermined signal for operating the warning output unit 120 of the feedback unit 100, re-inducing the connector re-tightening operation by re-recognizing that there is a connector with missing or incompletely fastened connectors. do (S250). At this time, when the connector refastening operation is normally completed, the vehicle to be assembled enters the n+1th process line (S230).

On the other hand, the position coordinate information of the missing connector (that is, the unworked connector to which the operator's hand has not even approached) identified in step S150 is output to the display device 313 of the fastening information output unit 310 of the production line to the operator By visually recognizing (S155), and then proceeding to step S240 to operate the sound generating device 311 and the lighting device 312 of the fastening information output unit 310, a connector whose fastening work is omitted or incompletely fastened to the operator Recognizes that there is a connector and induces connector re-tightening.

As the embodiments of the present invention have been described in detail above, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and also in the embodiments and drawings described in the present specification. Since the illustrated configuration is only a preferred embodiment of the present invention, the scope of the present invention is not limited to the above-described embodiment, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims It is included in the scope of the present invention.

100: feedback unit 110: sound input device
120: warning output unit 121: sound generating device
122: lighting device 123: vibration generating device
130: feedback unit communication unit 140: feedback unit power supply unit
150: feedback unit memory 200: server
210: location coordinate database for each vehicle part
220: Connector fastening work instruction database for each process line
230: sound database
240: production line database
250: database of unique identification number for each feedback unit
260: judgment control unit 270: server storage device
280: server communication unit 290: server power unit
310: fastening information output unit 311: sound generating device
312: lighting device 313: display device
320: communication unit for each process line 330: production line memory device
340: production line power supply

Claims (10)

Input the real-time connector tightening sound generated when the operator fastens the connector of the vehicle to be assembled that has entered the n-th process line among the process lines of the automobile production line through the sound input device of the feedback unit for the n-th process line worn by the operator the first step of receiving;
a second step of comparing the real-time connector fastening sound received through the feedback unit for the nth process line with a normal connector fastening sound of the nth process line stored in a sound database;
When it is determined that the real-time connector fastening sound of the n-th process line is different from the normal connector fastening sound of the n-th process line, the fastening information output unit installed in the n-th process line is operated to notify the operator that there is an abnormal fastening connector A third step of recognizing;
A method for determining whether a connector is fastened on an automobile production line, including a feedback method.
The method according to claim 1,
In the third step, when it is determined that the real-time connector fastening sound of the n-th process line is the same as the normal connector fastening sound of the n-th process line, the fastening information output unit installed in the n-th process line is operated to provide a connector to the operator. A method of determining whether a connector is fastened in an automobile production line and feedback method, characterized in that it recognizes that the fastening is normally performed.
The method according to claim 1,
When it is determined that the real-time connector fastening sound of the n-th process line is different from the normal connector fastening sound of the n-th process line, a warning output unit provided in the feedback unit for the n-th process line is operated to provide an abnormal fastening connector to the operator. Determination and feedback method of whether the connector of the automobile production line is fastened, characterized in that it further comprises the step of recognizing that there is.
The method according to claim 1,
The feedback unit for the n-th process line determines whether the connector is fastened in the automobile production line, characterized in that the sound input device is activated when the connector to be fastened and the connector fastening work to be worked in the n-th process line are within a predetermined distance. and feedback methods.
The method according to claim 1,
In the third step, the connector connection determination and feedback method of the automobile production line, characterized in that the output and display information on whether the connector is normally fastened to a display device among the fastening information output unit of the n-th process line.
The method according to claim 1,
In the second step, whenever the real-time connector fastening sound and the normal connector fastening sound are compared, information on whether the connector is normally fastened is stored in the server memory,
When the assembly target vehicle passes a predetermined reference point in the nth process line, it is determined whether there is an abnormally fastened connector among the fastening target connectors of the nth process line based on the information on whether the connector is normally fastened or not stored in the server memory device do,
If there is an abnormal fastening connector, a sound generating device and a lighting device are operated among the fastening information output unit to notify the operator that there is an abnormal fastening connector.
7. The method of claim 6,
A vehicle, characterized in that it is determined whether there is an unworked connector that has not even been fastened among the abnormal fastening connectors, and if there is an unworked connector, the position information of the unworked connector is output and displayed on a display device of the fastening information output unit How to judge whether the connector is fastened on the production line and give feedback.
The method according to claim 1,
The feedback unit for the n-th process line is a feedback unit having a unique identification number matching the unique identification number of the n-th process line among the feedback units for each process line used in the automobile production line. How to judge whether a connector is fastened and give feedback.
The method according to claim 1,
If the real-time connector fastening sound input in the first step contains noise above a predetermined reference frequency, filtering is performed in the frequency region above the reference frequency, and then the second step is performed. How to judge whether a connector is fastened and give feedback.
The method according to claim 1,
The n-th process line is a process line that requires connector fastening in the car production line.

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