JP2003140728A - Work survey analyzing system, work analyzing device and work survey analyzing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically record work contents performed by a plurality of devices and the work time. SOLUTION: An observing device 2 observes the location of an operator 1g in a factory 1. A production managing device 3 stores the contents of each event generated in each of a plurality of devices 1a-1f and the event generating time as production management information 3a. A work analyzing device 4 judges a time period when the operator 1g stays in the neighborhood of each of those devices 1a-1f from the location of the operator 1g and the positions of those devices 1a-1f (a step S1). Then, the work analyzing device 4 extracts the contents of the events generated by the devices in the neighborhood of the operator 1a within the time period from the production management information 3a (a step S2), and generates work analysis information by associating the extracted event contents with the time period (a step S3).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work survey analysis system, a work analysis device, and a work survey analysis method for improving productivity, and in particular, a work survey analysis system and work analysis device for performing work analysis of individual workers. , And work survey analysis method.

[0002]

2. Description of the Related Art In the general manufacturing industry, it is desired to improve productivity in factories. One aspect of increasing factory productivity is improving human labor productivity. To this end, the proper arrangement of people and improvement of working methods can be mentioned.

In order to properly arrange a person, first of all, the current situation is investigated and the work contents are analyzed. For example, by investigating the work contents of each worker for one day and the time required for each work, it is possible to grasp which work is a time-consuming work.

An observation method is a typical work analysis method. The observation method is a method in which an observer observes and records an operator as a subject. When the work contents of the subject are apparently easy to understand, such as the assembly process of a single product,
The observation method allows us to gather the information needed for work analysis.

[0005]

However, when the operator is in charge of a plurality of devices and the work content changes depending on the lot to be processed, such as in a semiconductor manufacturing factory, the work content and work time of each device are recorded. Must be done and it is difficult to carry out these recording tasks by observation.

[0006] For example, when a detailed work is performed by putting a hand inside the apparatus, the observer may not be able to grasp the work content. Therefore, in the observation method, the work analysis becomes superficial and is not useful for improving the work method.

In order to record the work performed by the operator on a plurality of devices, the observer must understand the contents of the work. Therefore, the observer is required to have skills equal to or higher than those of the operator. It is not preferable in terms of productivity that a highly capable person spends a long period only for observing other operators.

The present invention has been made in view of the above circumstances, and a work research and analysis system capable of automatically recording work contents and work hours performed by a plurality of devices,
It is an object to provide a work analysis device and a work investigation analysis method.

[0009]

In order to solve the above problems, the present invention provides a work survey analysis system as shown in FIG. The work research and analysis system of the present invention conducts research and analysis of the work content of the operator 1g in the factory 1. The work survey analysis system includes a plurality of devices 1a-
It has 1f, an observation device 2, a production management device 3, and a work analysis device 4.

The plurality of devices 1a to 1f are arranged in the factory 1 and generate an event when the work of the operator 1g is performed. The observation device 2 observes the position of the operator 1g in the factory 1. The production management device 3 monitors the operations of the plurality of devices 1a to 1f,
The content of the event and the event occurrence time are stored as the production management information 3a for each event that occurred.
The work analysis device 4 determines the time zone in which the operator 1g stays near each of the plurality of devices 1a to 1f from the position of the operator 1g observed by the observation device 2 and the predetermined positions of the plurality of devices 1a to 1f. (Step S1), the content of the near event that occurred in a device near the operator 1g within the time zone is extracted from the production control information 3a (step S1).
2) The work analysis information is generated by associating the content of the extracted near-field occurrence event with the time zone (step S3).

According to such a work survey and analysis system, when the operator 1g performs work using the devices 1a to 1f in the factory 1, the position of the operator 1g is observed by the observation device 2. Meanwhile, the events that have occurred in the devices 1a to 1f are stored in the production management device 3 as the production management information 3a. Then, the work analysis device 4 extracts a neighborhood occurrence event that has occurred in the device within the time zone in which the operator 1g stays in the vicinity of the devices 1a to 1f, and associates the neighborhood occurrence event with the time zone to perform work analysis. Information is generated.

In order to solve the above problems, the present invention provides production management information indicating the position of an operator who works in a factory, the content of an event generated from a device arranged in the factory, and the time of occurrence. On the basis of the above, in the work analysis device for analyzing the work content of the operator, the time zone in which the operator stays in the vicinity of each of the plurality of devices is determined from the position of the operator and the predetermined positions of the plurality of devices. The stay time zone determination unit and the content of the near-field occurrence event that occurred in the device near the operator within the time zone are extracted from the production management information, and the content of the extracted near-field occurrence event and the stay time zone determination unit are There is provided a work analysis device, comprising: a generation unit that generates work analysis information in association with the determined time zone.

According to such a work analysis device, a proximity event that has occurred in the device is extracted within a time zone when the operator stays in the vicinity of the device, and the event is associated with the time zone to obtain work analysis information. Is generated.

In order to solve the above problems, the present invention provides a work research and analysis method for carrying out a work analysis of an operator's work content in a factory, when the work is arranged in the factory and the work of the operator is carried out. The operation of a plurality of devices that generate an event is monitored, the contents of the event and the event occurrence time are stored as production management information for each event that occurs in each of the plurality of devices, and the operator of the operator in the factory Observing the position, determining the time zone in which the operator stayed in the vicinity of each of the plurality of devices from the observed position of the operator and the predetermined position of the plurality of devices, and determining the time zone of the operator within the time period. The content of the near-field occurrence event generated in the nearby device is extracted from the production management information, and the extracted content of the near-field occurrence event and the above-mentioned In association with between bands, it generates a performance analysis information, work study analysis method characterized in that it comprises a process is provided.

According to such a work survey and analysis method, the operations of a plurality of devices are monitored, and the content of the event and the event occurrence time are stored as production management information for each event that has occurred in each of the plurality of devices. . Further, the position of the operator in the factory is observed, and the time zone in which the operator stays in the vicinity of each of the plurality of devices is determined from the observed position of the operator and the predetermined positions of the plurality of devices. Then, the content of the proximity event that has occurred in the device near the operator within the time zone is extracted from the production management information, the content of the extracted proximity event and the time zone are associated, and work analysis information is generated. .

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. First, an outline of the invention applied to an embodiment of the present invention will be described, and then specific contents of the embodiment of the present invention will be described.

FIG. 1 is a conceptual diagram of the invention applied to an embodiment of the present invention. Work survey analysis system, factory 1
The work contents of the operator 1g are analyzed and analyzed. The work survey analysis system includes a plurality of devices 1a to 1a.
f, an observation device 2, a production control device 3, and a work analysis device 4.

The plurality of devices 1a to 1f are arranged in the factory 1 and generate an event when the work of the operator 1g is performed. The event includes, for example, a start process event when starting the process, an end process event when the process ends, and an alarm event when the process is interrupted.

The observation device 2 observes the position of the operator 1g in the factory 1. The observation of the position of the operator 1g can be calculated, for example, by detecting the strength of the signal transmitted by the transmitter 2a possessed by the operator 1g at a plurality of positions and performing a predetermined calculation.

The production control device 3 comprises a plurality of devices 1a-1f.
Is monitored, and the contents of the event and the event occurrence time are stored as production management information 3a for each event that has occurred in each of the plurality of devices 1a to 1f.

The work analysis device 4 is a time zone in which the operator 1g stays near each of the plurality of devices 1a to 1f from the position of the operator 1g observed by the observation device 2 and the predetermined positions of the plurality of devices 1a to 1f. Is determined (step S
1). Next, the work analysis device 4 extracts, from the production management information 3a, the content of the event (proximity occurrence event) that occurred in the device near the operator 1g within the time zone (step S
2) The work analysis information is generated by associating the content of the extracted event with the time zone (step S3). Then, the work analysis device 4 regards the time zone associated with each event in the work analysis information as the work time of the work corresponding to the event, and generates the statistical information indicating the work content and the work time of the operator, Display statistical information 5
Is displayed (step S4).

According to such a work research and analysis system, when the operator 1g performs work using the devices 1a to 1f in the factory 1, the position of the operator 1g is observed by the observation device 2. Meanwhile, the events that have occurred in the devices 1a to 1f are stored in the production management device 3 as the production management information 3a. Then, the work analysis device 4 extracts an event that occurred in the device within the time period in which the operator 1g stayed in the vicinity of the devices 1a to 1f, associates the event with the time period, and generates work analysis information. It Based on the generated work analysis information, statistical information about the work content and work time of the operator is displayed.

As a result, the production management information 3a and the position information of the operator 1g can be associated with each other to effectively perform work analysis. That is, it is considered that the operator 1g has dealt with the event occurring in the device near the place where the operator 1g is staying. Moreover, since the coping method is determined depending on the content of the event, the operator 1
The contents of the work performed by g become clear. Moreover, the working time of the operator 1g can be known from the time of stay. As described above, the work analysis information generated by the work analysis device 4 includes information about the work content and the work time of the operator 1g. Therefore, based on the work analysis information,
Enables effective work analysis.

Moreover, since the present invention does not require an observer as in the observation method, it can be performed with a small amount of manpower, and the analysis result does not depend on the skill of the person who performs the analysis.

An embodiment of the present invention will be specifically described below by taking the case where the present invention is applied to the analysis of the work content of an operator in a semiconductor manufacturing factory as an example. FIG. 2 is a configuration diagram of the system according to the embodiment of the present invention. In the present embodiment, a plurality of devices 111 to 116 are installed in the factory 100. The devices 111 to 116 are semiconductor manufacturing devices. The devices 111 to 116 each include an input device such as a keyboard and a bar code reader and a display device such as a liquid crystal display. The operator 140 uses the device 1
Using the input devices 11 to 116, the devices 111 to 116
It is possible to input an operation to. Each device 111-
116 executes the process of the process instructed by the operation input from the operator 140. In addition, each device 111 to 116
Generates an event indicating the content of the operation input, the content of the process executed in response to the operation input, and the production management apparatus 2
00 is notified.

In the factory 100, a private branch exchange 120 for mobile communication and a plurality of base stations 121 to 126 are installed. The base stations 121 to 126 include the devices 111 to 11
It is located at position 6. As mobile communication, for example, PHS (Personal Handyphone System) can be applied. An operator 140 who operates the devices 111 to 116 in the factory 100 has a mobile communication terminal device 130.

Communication for confirming the existence of the terminal device 130 is performed between the terminal device 130 and the base stations 121 to 126. The contents of the communication are collected by the private branch exchange 120. The private branch exchange 120 includes the base stations 121 to 126.
The work analysis apparatus 300 is notified of the strength of the signal from the terminal device 130 in the above. The private branch exchange 120 also identifies a base station that performs wireless communication with the terminal device 130, according to the reception strength of the signal output from the terminal device 130.

Further, the private branch exchange 120 is the terminal device 1
When a predetermined button of 30 is pressed, the information of the pressed button is acquired via the base stations 121 to 126 and passed to the work analysis device 300. For example, when the operator 140 performs a work other than the semiconductor manufacturing process (such as creating a daily report),
A numerical value indicating the work content is input to the terminal device 130.
Then, the numerical value is passed to the work analysis device 300 via the private branch exchange 120.

A plurality of devices 111 to 116 in the factory 100
Is connected to a production management device 200 installed outside the factory 100. The production management device 200 is a MES (Manu
It has a production management function called the facturing Execution System) and manages the semiconductor manufacturing process. In order to manage the process, the production control device 200 includes the devices 111 to 111.
The information about the event stored by the 116 is collected, and lot processing history information and device operation history information are generated. The lot processing history information records who performed what kind of work with which device. Also, the device operation history information includes
It records when and what kind of alarm occurred. The production management apparatus 200 recognizes the process performed for each lot and the process to be performed in the future based on the generated lot processing history information. Then, the production control device 200
When a lot is put into the devices 111 to 116,
Notify the lot of the next process to be performed.

The work analysis device 300 includes a private branch exchange 12
0 and the production control device 200. From the private branch exchange 120 to the operator 14
The information indicating the position of the terminal device 130 owned by 0 and the information regarding the operation input performed on the terminal device 130 are acquired. The information on the position means each of the base stations 121 to 12
6 is information regarding the strength of the signal received from the terminal device 130.

The work analysis device 300 generates flow line history information of the operator 140 based on the information regarding the position of the terminal device 130. The flow line history information is for each time zone,
This is information indicating the position of the operator 140. In the flow line history information, who is where and where (in the vicinity of which device) is recorded.

Further, the work analysis apparatus 300 refers to the lot processing history information, the equipment operation history information, and the flow line history information, and uses "who", "when", "which device" as a key, and the flow line history information. In contrast, work content (obtained from lot processing history information) and alarm content (obtained from equipment operation history information)
Is added to the flow line history information. As a result, work analysis information regarding the operator 140 is generated. The work analysis information indicates the time required for each work performed by the operator 140. The work analysis device 300 can generate statistical information indicating the work content of the operator 140 based on the generated work analysis information, and display the statistical information in a graph or the like.

FIG. 3 is a diagram showing a hardware configuration example of the work analysis device used in the embodiment of the present invention. The work analysis device 300 includes a CPU (Central Processing Unit) 3
01 controls the entire apparatus. CPU301
RAM (Random Access Memory) via the bus 307.
y) 302, hard disk drive (HDD: Hard Disk)
Drive) 303, graphic processing device 304, input interface 305, and communication interface 306
Are connected.

The RAM 302 temporarily stores at least part of an OS (Operating System) program and application programs to be executed by the CPU 301. Further, the RAM 302 stores various data necessary for the processing by the CPU 301. The HDD 303 has
The OS and application programs are stored.

The monitor 11 is connected to the graphic processing device 304. Graphic processing device 304
Monitors the image according to the instruction from the CPU 301.
Display it on the 1st screen. The keyboard 12 and the mouse 13 are connected to the input interface 305.
The input interface 305 sends a signal sent from the keyboard 12 or the mouse 13 to the CP via the bus 307.
Send to U301.

The communication interface 306 is connected to the network 10. Communication interface 306
Transmits and receives data to and from the production control device 200 and the private branch exchange 120 via the network 10.

With the above hardware configuration,
The processing function of this embodiment can be realized. Although the hardware configuration of the work analysis device 300 is shown in FIG. 3, the production management device 200 can also be realized with the same hardware configuration.

Next, a description will be given of how information about an operation performed by a certain operator in the factory 100 is fetched into the production control apparatus 200.

FIG. 4 is a conceptual diagram showing how information is collected by the production apparatus. The example of FIG. 4 uses the device 111,
The case where lot 150 is subjected to a predetermined process is shown.

As shown in FIG. 4, the device 111 includes a keyboard 111a and a bar code reader 111b as input devices.
And have. Further, the device 111 has a display device 111c and an alarm lamp 111d as output devices. In addition, an operator 1 who works in the factory 100
41 to 143 are plates 1 showing respective identification information
Possess 41a, 142a, 143a. The operator 141 is attached to the plates 141a, 142a, 143a.
To bar codes 141b and 142 representing identification information
b and 143b are printed.

The lot 150 is composed of a case for accommodating a semiconductor substrate (wafer) and a plurality of semiconductor substrates accommodated in the case. A bar code 151 indicating the identification information of the lot is printed on the case of the lot 150.

The operator 141, who puts the lot 150 into the apparatus 111, sends the barcode 141b printed on the plate 141a of the apparatus 111 and the barcode 151 of the lot 150 to the apparatus 111.
Read with 11b. As a result, in the device 111, the operator 1 who performs the work of starting the lot 150
The identification information (or name) 41 and the identification information of the lot 150 are acquired. Then, the device 111 acquires the process name and recipe of the process to be performed next from the production control device 200, and displays it on the display device 111c.

If the process displayed on the display device 111c is correct, the operator 141 places the lot 150 at a predetermined place in the device 111 and inputs a process start command using the keyboard 111a. This allows the device 111
Performs processing on the semiconductor substrates in the lot 150 according to the designated process.

When the operator 141 starts processing the lot 150, the apparatus 111 produces necessary information such as the operator 141 identification information (or name), the lot 150 identification information, and the process name together with the date and time when the event occurred. The management apparatus 200 is notified as a processing start report. The information included in this treatment start report is stored as lot processing history information in the production management database of the production management apparatus 200.

An alarm may occur while the apparatus 111 is processing the lot 150. For example, an alarm occurs when the semiconductor substrate has failed to be transported in the device 111. When an alarm occurs, the device 111 turns on the alarm lamp 111d, so that the operators 141, 142, 143 in the factory 100.
To notify the alarm occurrence. When an alarm occurs, the device 111 notifies the production management device 200 of the alarm information together with the event occurrence date and time as an alarm occurrence report. The information included in this alarm occurrence report is stored in the production control database of the production control apparatus 200 as apparatus operation history information.

The operator 142 who knows the occurrence of the alarm
Approaches the device 111 and investigates the cause of the alarm occurrence. Then, the cause of the alarm occurrence is eliminated, and the device 11
For 1, the operation input for continuing the process is performed. For example, when the semiconductor substrate cannot be successfully transferred, the operator 142 fixes the semiconductor substrate on a transfer table or the like and causes the apparatus 111 to continue the processing. Operator 142
However, when the alarm treatment is performed and the alarm is released, the device 111 notifies the production management device 200 of the alarm release information together with the event occurrence date and time as an alarm release report. The information included in the alarm release report is also stored in the production control database of the production control apparatus 200 as the apparatus operation history information.

When the processing of the designated process for the lot 150 is completed in the apparatus 111, the lot 150 is conveyed to the discharge port of the apparatus 111. Then, the operator 143 approaches the apparatus 111 and performs a process end work (carry-out work) of the lot 150. The operator 143, who carries out the lot 150 from the device 111, tells the device 111 that the barcode 14 printed on the plate 143a of the operator 143 has been printed.
3b is read by the bar code reader 111b. Then, the operator 143 moves the lot 150 to an apparatus for performing the next process.

Even when the processing of the lot 150 is completed, the apparatus 111 sends necessary information such as the lot name and the processing result to the production management apparatus 200 as a processing completion report together with the event occurrence date and time, as in the case of the start processing. Notice. The information included in this processing completion report is also stored as lot processing history information in the production management database of the production management apparatus 200.

As described above, the same information as the information transmitted from the device 111 to the production management device 200 is also transmitted from the other devices 112 to 116 to the production management device 200. As a result, in the production management apparatus 200, the lot processing history information and the equipment operation history information are accumulated in the production management database.

FIG. 5 is a diagram showing the acquisition status of the position information of the operator. In the factory 100, multiple operators 1
41-143 are working. In FIG. 5, the places where the operators 141 to 143 have stayed are indicated by circles. The line connecting the circles is the flow line 1 of each operator 141-143.
61 to 163.

The operators 141 to 143 possess terminal devices 131 to 133, respectively. Each terminal device 13
1 to 133 transmit a predetermined signal, and the signal is transmitted to the base station 1
21-126. And the base stations 121 to 1
The strength of the signal received at 26 is passed to the work analyzer 300 via the private branch exchange 120. Then, the work analysis device 300 calculates the positions of the terminal devices 131 to 133.

In the work analysis device 300, the terminal device 131
~ 133 positions are calculated at predetermined time intervals, and the calculated positions are stored, so that the flow lines 1 of the operators 141 to 143 carrying the terminal devices 131 to 133, respectively.
61-163 are acquired.

The flow lines 161 to 163 correspond to the operators 14
1 to 143 are trajectories of movement within the factory 100. For example, each operator 141-143 assigns a lot to the device 1
11-116, or carry out lots processed by the apparatuses 111-116 from the apparatuses 111-116,
It is carried to the positions of other devices 111 to 116. Also,
If there is a device in which an alarm has occurred, one of the operators approaches the device and works to eliminate the cause of the alarm. In this way, each operator 141-1
The locus of movement of 43 in the factory is stored in the work analysis device 300 as flow line information.

Next, the processing functions of the production control device 200 and the work analysis device 300 will be described. Figure 6
It is a functional block diagram of a production management device and a work analysis device in an embodiment of the invention.

The production control apparatus 200 has a production control database 210 and an apparatus operation information collection section 221. The production management database 210 is the production management device 20.
Lot processing history information 211a, 211b, 211c, ...
.. and device operation history information 21 for each of the devices 111 to 116
2a, 212b, 212c, ... Are stored.
Lot processing history information 211a, 211b, 211c, ...
.. are the devices 111 to 116 for the corresponding lots
It is the information regarding the process executed by. The lot processing history information 211a, 211b, 211c, ... Includes information on the occurrence of an event such as a process start process and a process end process, and an operator who performed a work corresponding to the event. Device operation history information 212a, 21
2b, 212c, ... Is information indicating the operating status of each of the devices 111 to 116. For example, the device operation history information 212a, 212b, 212c, ...
The time and the content of the event related to the events 1 to 116 such as alarm occurrence and alarm cancellation are included.

The device operation information collection unit 221 communicates with a plurality of devices 111 to 116, and each device 111 to 1
Operation information (processing start report, processing end report, alarm occurrence report, alarm cancellation report, etc.) is collected from 16. The device operation information collection unit 221 uses the information contained in the received process start report and process end report to process lot information 211a, 211b, 211c, ... Corresponding to the lot processed by the devices 111 to 116. Register with. Also, each time an event occurs in the device 111 to 116, an alarm occurrence report or an alarm cancellation report is received from the device, and the device operation history information corresponding to the device that generated the alarm is included in the alarm occurrence report or the alarm cancellation report. Registered information.

The work analysis device 300 includes a flow line database 310, a history information database 320, and a flow line recording unit 33.
1, a designated information extraction unit 332, a data combination unit 333, and a display unit 334.

In the flow line database 310, flow line history information 311, 312, 313 indicating the flow line of each operator.
... is stored. Flow history information 311, 31
2, 313, ... Are information indicating the position at each time when the operators 141 to 143 move in the factory 100.

The history information database 320 is information on the work content and flow line of the operator who is the work analysis target. The history information database 320 includes lot processing history information 321, device operation history information 322, and flow line history information 323 extracted under predetermined conditions. The lot processing history information 321 is stored in the production management database 210.
Lot processing history information 211a, 211b, 211c,
Of the ..., Information related to the work of one or more arbitrary operators. The equipment operation history information 322 is the equipment operation history information 212 a, 21 of the production management database 210.
2b, 212c, ... It is information related to the work of one or more arbitrary operators. Flow history information 323
Means that the operator who is the work analysis target is each of the devices 111 to 116.
The information is related to the time zone of staying in the vicinity of and the time zone during which the operator who is the target of the work analysis moves between the devices 111 to 116.

The flow line recording unit 331 acquires information indicating the position of the terminal device 131 from the private branch exchange 120. In the present embodiment, information regarding the reception strength of the signal from the terminal device 131 in each of the base stations 121 to 126 is acquired. Then, the flow line recording unit 331 makes the base stations 121 to 12
6 and the reception strength of the signal from the terminal device 131 in each of the base stations 121 to 126.
The position of 31 is judged.

In the flow line recording section 331, the positions of the devices 111 to 116 in the factory 100 are registered in advance. The flow line recording unit 331, based on the position of the terminal device 131,
An operator 141 to possess the terminal device 131
The place of stay of 143 (which device is near) is determined. For example, the flow line recording unit 331 determines that an operator stays at the position of the device when the operator approaches within a radius of 1 m of the device. Then, the flow line recording unit 331 registers information such as the time of stay at the place of stay in the flow line information corresponding to the operators 141 to 143.

The designated information extraction section 332 extracts information of the contents designated by the operation input from the production management database 210 in the production management apparatus 200 or the flow line database 310 in the work analysis apparatus 300, and the history information database. Store in 320. For example, when a work analysis request is issued to a work analysis target operator, search conditions such as the analysis target operator name, device, and time are accepted. Then, the designated information extraction unit 332 uses the lot processing history information 211a, 211b, and
Information that matches the search condition is acquired from the 211c, ... And stored in the history information database 320 as lot processing history information 321. Further, the designated information extraction unit 332
Acquires information that matches the search condition from the respective device operation history information 212a, 212b, 212c, ... In the production management database 210, and stores it in the history information database 320 as device operation history information 322. Further, the designated information extraction unit 332 extracts information that matches the search condition from the flow line database 310 and stores it as flow line history information 323 in the history information database 320.

The data synthesizing unit 333 synthesizes the lot processing history information 321, the equipment operation history information 322, and the flow line history information 323 stored in the history information database 320, and generates work analysis information 340. Specifically, the data synthesizing unit 333 associates the information in the lot processing history information 321 indicating the processing within the time zone with the information for each time zone of the flow line history information 323 regarding the operator who is the work analysis target. Similarly, the data synthesizing unit 333, with respect to the information for each time period of the flow line history information 323 regarding the operator, the device operation history information 322 indicating the processing within that time period.
Associate the information within. Then, the data synthesizing unit 333
Sets the associated information as work analysis information 340. After that, the data synthesizing unit 333 passes the generated work analysis information 340 to the display unit 334.

The display unit 334 generates statistical information based on the work analysis information 340 and the device operation history information 322, and visually displays the statistical information. For example, the display unit 334
Displays the ratio of the time required for each work in the whole work for one day in a pie chart by summing the time required for each work content.

Next, various data handled by the production control device and the work analysis device will be described. FIG. 7 is a diagram showing an example of lot processing history information. In the example of FIG.
As the lot processing history information 211a, "lot", "operator", "process", "apparatus", "date and time", and "event information" are registered. In the figure, pieces of information arranged in the horizontal direction are associated with each other.

"Lot" is identification information of each lot. In the example of FIG. 7, "Lot-1", "Lot-2",
... is registered. The “operator” is identification information of the operator who performed the process for the corresponding lot. In the example of FIG. 7, the operator “OP-1” processes the lot “Lot-1” and the lot “Lot-1” is processed.
The operator "OP-3" is processing "2".

The "process" is identification information of the process processed by the operator for the corresponding lot. In the example of FIG. 7, the process “ST-1” is performed for the lot “Lot-1”.
Is performed, and the process “ST-
5 ”is taking place.

The "apparatus" is identification information of the apparatus used when the operator processed the corresponding lot. In the example of FIG. 7, the device “M-1” is used for processing the process “ST-1” for the lot “Lot-1”, and the device “M-1” is used for processing the process “ST-5” for the lot “Lot-2”. M-4 ”is used.

The "date and time" is the date and time of occurrence of an event due to the operator processing the corresponding lot. In the example of FIG. 7, the process of the process “ST-1” for the lot “Lot-1” is “October 11, 2001 10
30 minutes (2001-10-11 10:30) ". Also,
The process of the process "ST-5" for the lot "Lot-2" is "October 11, 2001 10:35 (2001-10-11).
10:35) ”.

The "event information" is the content of work performed by the operator. In the example of FIG. 7, the operator “OP-
1 "in the device" M-1 ", October 11, 2001
The start process is performed at 10:30 on the day. In addition, the operator “OP-3” operates the device “M-4” at 200
The ending process is performed at 10:35 on October 11, 1st.

Lot processing history information 211a shown in FIG.
By extracting information regarding a specific operator from the above and sorting by the date and time when the event occurred, the lot processing history information 321 focused on the operator can be obtained.

FIG. 8 is a diagram showing an example of lot processing history information focused on the operator. Lot processing history information 3
In “21”, “date / time”, “apparatus”, “lot”, and “event information” are registered. In the figure, pieces of information arranged in the horizontal direction are associated with each other.

"Date and time" is the date and time when the operator performed the work. The “device” is identification information of the device that is the work target of the operator. The "lot" is the work content performed by the operator. In the example of FIG. 8, the operator is 2001
At 10:30 on October 11, 2001 (10th October, 2001-10-11), the lot “Lot-1” is started in the apparatus “M-1”. In addition, the operator, at 10:33 on October 11, 2001 (2001-10-11 10:33), the device "M-
3 ”, the lot“ Lot-5 ”is finished.

Next, the device operation history information will be described. FIG. 9 is a diagram showing an example of device operation history information.
"Date and time" and "event information" are registered in the device operation history information 212a. In the figure, pieces of information arranged in the horizontal direction are associated with each other.

"Date and time" is the date and time when an event occurred in the device. The "event information" is the content of the event that has occurred in the device. Events that occur in the device include start of processing of a designated process, end of processing of a process, and alarm generation. In the example of FIG. 9, 2001
An alarm occurred at 10:30 on October 11, 2001 (10-11, 2001), and at 10:48 on October 11, 2001 (2
001-10-11 10:48) the alarm has been released.

Next, the flow line history information will be described. FIG. 10 is a diagram showing an example of flow line history information. Information on “From”, “To”, and “work (stay)” is registered in the flow line history information 311. In the figure, information arranged in the horizontal direction (including information shown in the upper and lower rows) is associated with each other.

"From" is information indicating the departure date and time and the departure device when the operator moves. The departure device is a device near the place where the operator was staying before departure. The "From" column is divided into upper and lower parts,
The upper row shows departure date and time, and the lower row shows identification information of the departure device.

"To" is information indicating the arrival date and time and the arrival device when the operator moves. The arrival device is a device near the place where the operator was staying after moving. The “To” column is divided into upper and lower parts, the upper row is the arrival date and time, and the lower row is the identification information of the arrival device.

"Work (stay)" is information on the work performed by the operator on the apparatus. "Work (stay)" includes "work start date and time", "work end date and time",
The information of "work device" and "work code" is included.
The columns of "work (stay)" showing "work start date and time", "work end date and time", and "working device" are divided into upper and lower parts,
From the left, "work start date and time" and "work end date and time" are shown in the upper row, and "work device" is shown in the lower row.
The time from "work start date and time" to "work end date and time"
The time spent in the vicinity of the corresponding “working device”, that is, working time. The work code input by the operator is registered in the “work code” field. The work code represents the work content of the operator with a predefined identification number. The work code can be arbitrarily input by the operator. For example, if a work code is input when a work different from the manufacturing process is performed, it can be understood that the corresponding time zone is a time to be excluded from the time required for the manufacturing process.

In the example of FIG. 10, the flow line history of the operator on October 11, 2001 is shown. The operator left the device "M-5" at 10:29 and arrived at the device "M-1" at 10:30. The operator started the work corresponding to the work code "Code-1" at 10:30, and carried out until 10:34. next,
The operator left near the device "M-1" at 10:34 and arrived at the position of the device "M-2" at 10:35. The operator stays near the device "M-2" from 10:35 to 10:41. FIG. 5 conceptually shows such flow line history information 311.

Flow line history information 311, 312, 313, ...
.., Lot processing history information 211a, 211b, 211
c, ..., Device operation history information 212a, 212b, 2
The specified information extracting unit 332 performs a search from 12c, ... Using the operator name, date and time, and device name as keys, and the search results are stored in the history information database 320. The work analysis information 340 is obtained by synthesizing the stored information. The work analysis information will be described below.

FIG. 11 is a diagram showing an example of work analysis information. The work analysis information 340 is information in which incidental information is added to each piece of information of the extracted flow line history information 323 for each time period. The incidental information is information in which the date and time within the time zone indicated by the corresponding information among the lot processing history information 321 and the apparatus operation history information 322 in the history information database 320 are set. The additional information provides details of the work performed on the device in each time zone. For example, the "accompanying information A" is information about the work performed by the device "M-1", and the "accompanying information B" is information about the work performed by the device "M-2".

Next, a process for performing an operator work analysis based on the contents of the production management database 210 and the flow line database 310 will be described. FIG. 12 is a flowchart showing the overall flow of the work analysis process. Below, Figure 1
The process shown in 2 will be described in order of step number.

[Step S11] Designated Information Extractor 332
Is the period to be analyzed, the operator to be analyzed,
An operation input that specifies a device to be analyzed is accepted. [Step S12] The designation information extraction unit 332 extracts the flow line history information 311, 312, 31 from the flow line database 310.
Search processing of 3, ... Details of this processing will be described later.

[Step S13] Designated Information Extractor 332
Performs search processing of lot processing history information 211a, 211b, 211c, ... From the production management database 210. Details of this processing will be described later.

[Step S14] Designated Information Extractor 332
Performs a search process of the device operation history information 212a, 212b, 212c, ... From the production management database 210. Details of this processing will be described later.

[Step S15] Data combiner 333
Composes the information in the history information database 320 to generate the work analysis information 340. Details of this processing will be described later.

[Step S16] The display unit 334 converts the content of the work analysis information 340 into a predetermined format and displays it. Details of each process performed in such a procedure will be described below.

FIG. 13 is a flow chart showing the procedure of the flow line history information search processing. Hereinafter, the process illustrated in FIG. 13 will be described in order of step number. [Step S21] The specified information extraction unit 332 provides the flow line history information 311 and 312 in the flow line database 310 with information that satisfies the conditions regarding the period to be analyzed, the operator to be analyzed, and the device to be analyzed. , 31
Search from 3, ...

[Step S22] Designated Information Extractor 332
Extracts the information detected in step S21 from the flow line database 310. Specifically, the flow line history information 31
.. are created for each operator, the designated information extraction unit 332 first extracts the flow line history information corresponding to the operator to be analyzed. Next, the designated information extraction unit 332 extracts only the information of the period to be analyzed from the extracted flow line history information. Then, the designated information extraction unit 332 extracts only the information related to the device to be analyzed from the extracted flow line history information.

[Step S23] Designated information extraction unit 332
Stores the extracted data in the history information database 320 as the flow line history information 323. Then, the process proceeds to step S13 in FIG.

FIG. 14 is a flow chart showing the procedure of lot processing history information retrieval processing. Hereinafter, the process illustrated in FIG. 14 will be described in order of step number. [Step S31] The designated information extraction unit 332 stores the lot processing history information 211a, 2 in the production management database 210 as information that satisfies the conditions regarding the period to be analyzed, the operator to be analyzed, and the device to be analyzed.
Search from 11b, 211c, ....

[Step S32] Designated Information Extractor 332
Extracts the information detected in step S31 from the production management database 210. [Step S33] The designation information extraction unit 332 sorts the extracted data according to time, and lot processing history information 3
21 in the history information database 320. Then, the process proceeds to step S14 in FIG.

FIG. 15 is a flow chart showing the procedure of apparatus operation history information search processing. Hereinafter, the process illustrated in FIG. 15 will be described in order of step number. [Step S41] The specified information extraction unit 332 sets the device operation history information 212a, 212b, 212c, ... In the production management database 210 as the information satisfying the conditions regarding the analysis target period and the analysis target device. Search from.

[Step S42] Designated Information Extractor 332
Extracts the information detected in step S41 from the production management database 210. [Step S43] The designated information extraction unit 332 stores the extracted data as device operation history information 322 in the history information database 320. Then, the process proceeds to step S15 in FIG.

FIG. 16 is a flow chart showing the procedure of the work analysis information generation processing. Hereinafter, the process illustrated in FIG. 16 will be described in order of step number. [Step S51] The data synthesis unit 333 creates a list of operators to be analyzed.

[Step S52] Data combiner 333
Selects the operators on the list created in step S51 one by one. Here, the selected operator is set to H.

[Step S53] Data combiner 333
Extracts the flow line history information of the selected operator H from the history information database 320. [Step S54] The data synthesizing unit 333 outputs the time from the time (Tin) when the operator H enters the vicinity of the device M.
Up to (Tout) is defined as the staying time (Tin-Tout) in the apparatus M.

[Step S55] Data combiner 333
From the lot processing history information 321 in the history information database 320, among records in which the apparatus is M and the operator is H, what occurred during the stay time (Tin-Tout) is the work content (accompanying information), and the stay Add to time (Tin-Tout) data.

[Step S56] Data combiner 333
From the device operation history information 322 in the history information database 320, among the records in which the device is M and the operator is H, what occurred during the stay time (Tin-Tout) is the work content (accompanying information) Add to time (Tin-Tout) data.

[Step S57] Data combiner 333
Determines whether all records have been checked.
If all the records have been checked, the process proceeds to step S58. If there is an unprocessed record, the process proceeds to step S54.

[Step S58] Data combiner 333
Determines whether all the operators on the list created in step S51 have been checked. If all the operators have been checked, the process proceeds to step S59. If there is an unprocessed operator, the process proceeds to step S52.

[Step S59] Data combiner 333
Stores the processed data as work analysis information 340. Through the above processing, the operator 141-
The flow line information 143 and the work performed in each of the devices 111 to 116 can be associated with each other to generate work analysis information 340 that is consistent statistical data. Since the work analysis information 340 indicates which work was performed by which operator and each operator 141 to 143, and how much time was taken, the process review in the factory 100 and the equipment 111 to 116 are shown. Can be used to review the placement of

A display example of the work analysis information 340 will be described below. FIG. 17 is a diagram showing a first display example of work analysis information. In the example of FIG. 17, the screen 1 displays the factory 1
The 00 scale map is displayed. In the scale diagram, the device image 411 is displayed in the same manner as the actual arrangement of the devices 111 to 116.
~ 416 are displayed. On the screen 400, circular marks 421 to 427 are shown at the positions of the device image corresponding to the device where the operator stayed. Each mark 421-
427 is connected by an arrow in the order of movement of the operator.
The line connecting the arrows corresponding to the operator is the flow line 441 of the operator.

Additional information 431 to 437 is displayed at the position of the apparatus where the operator stayed. By selecting any of the incidental information 431 to 437 on the screen, the contents of the incidental information (stay period, occurred event, process name, lot name, etc.) can be displayed.

As described above, by displaying the contents of the work analysis information 340 by the scale diagram of the factory 100, it is possible to easily recognize the flow line of the operator and the processing performed in each device.

FIG. 18 is a diagram showing a second display example of work analysis information. In this example, based on the work analysis information 340, a pie chart 510 shows the ratio of the time required for each work to the whole. In the example of FIG. 18, the travel time 51
1 is the longest, followed by lot start processing time 512, lot end processing time 513, device assist time 514, and other time 515. The device assist is a short-time alarm process.

In this way, the work details can be displayed in a visually easy-to-understand manner. FIG. 19 is a diagram showing a third display example of work analysis information. In this example, the work required time for the lot start work is represented by a histogram 520 based on the work analysis information 340. In the example of FIG.
Information on statistical objects is narrowed down by limiting devices, types, processes, recipes, and operators.

As described above, by comparing the histogram 520 of the required work time of each work with the device or the operator as a key, the problem in the work can be clarified. For example, if the time required for the lot start work is longer than the work time expected in the work procedure manual, the time required in the work procedure manual may be unreasonable or work not expected in the work procedure manual may occur. It is possible that

FIG. 20 is a diagram showing a fourth display example of work analysis information. In this example, based on the work analysis information 340, the work required time of the device assist work is represented by a histogram 530. In the example of FIG. 20, the information of the statistical object is narrowed down by limiting the device and the operator.

As described above, by displaying the histogram 530 of the work required time of the assist work for each device, the problem of the device to be improved becomes clear. This can also be used to evaluate the stability of the device. For example, if the assisting work for a specific device frequently occurs, it is considered that there is a problem in the stability of the operation of the device.

As described above, the work records including the detailed work contents can be collected without depending on the skill of the observer and without giving the operator an extra work load for the work analysis. it can.

That is, by comparing the flow line history information of the operator with the production control information, the detailed work contents at the destination of the operator required for the work analysis can be collected without requiring the skill of the observer. It will be possible. Also,
It is possible to analyze work continuously for a long period of time, and it will be possible to accurately perform work improvement and personnel assignment review that should be considered after work analysis.

Further, the operator can evaluate the stability of the device and evaluate the improvement effect of the device by quantifying it by seeing what kind of alarm of the device he has dealt with and how much.

Furthermore, in this embodiment, the operator is
There is no need to perform any special work other than the work necessary for the semiconductor manufacturing process to collect information for work analysis. Therefore, the reliability of the work analysis result can be maintained.

That is, if only the work contents are collected,
O of button on terminal device such as PHS by operator
By the N-OFF operation, only the start / end of the work can be wirelessly notified from the terminal device to the work analysis device. However, in this case, an additional work load is imposed on the operator for work analysis. As a result, the original work itself is disturbed (disturbed), and the accuracy of work analysis also deteriorates. In the embodiment of the present invention, the work content is judged by the event generated by each device, and the work time in the device where the event occurs is judged by the flow line of the operator. To prevent the occurrence of.

In the above description, the position of the operator is observed using the technique of mobile communication such as PHS, but another observation method may be used. For example, it is possible to measure the distance to the operator with two ultrasonic sensors and obtain the two-dimensional position.

Further, the above processing functions can be realized by a computer. In that case, a program describing the processing contents of the functions that the production management apparatus 200 and the work analysis apparatus 300 should have is provided. By executing the program on a computer, the above processing functions are realized on the computer. The program describing the processing content can be recorded in a computer-readable recording medium. Computer-readable recording media include magnetic recording devices, optical disks, magneto-optical recording media, semiconductor memories, and the like. The magnetic recording device includes a hard disk device (HDD), a flexible disk (FD), a magnetic tape, and the like. Optical discs include DVD (Digital Versatile Disc) and DVD-RAM
(Random Access Memory), CD-ROM (Compact Disc
Read Only Memory), CD-R (Recordable) / RW (ReWr
itable). MO (Magnet)
o-Optical disc).

In order to put the program into the market, for example, a DVD or a CD-ROM in which the program is recorded
Portable recording media such as. It is also possible to store the program in the storage device of the server computer and transfer the program from the server computer to another computer via the network.

The computer that executes the program stores, for example, the program recorded in the portable recording medium or the program transferred from the server computer in its own storage device. Then, the computer reads the program from its own storage device and executes processing according to the program. The computer can also read the program directly from the portable recording medium and execute processing according to the program. In addition, the computer can also sequentially execute processing according to the received program each time the program is transferred from the server computer.

(Supplementary Note 1) In a work investigation and analysis system for investigating and analyzing the work contents of an operator in a factory,
A plurality of devices that are arranged in the factory and generate an event when the operation of the operator is performed, and the operations of the plurality of devices are monitored, and the event of each of the events generated in each of the plurality of devices A production management device that stores content and event occurrence time as production management information, an observation device that observes the position of the operator in the factory, a position of the operator observed by the observation device, and the plurality of devices. From the predetermined position, the operator determines the time zone in which the operator stays in the vicinity of each of the plurality of devices, and the content of the proximity occurrence event that occurred in the device near the operator within the time zone is determined from the production management information. And a work analysis device that generates work analysis information by associating the extracted contents of the near-field occurrence event with the time zone. Work research and analysis system which is characterized in that.

(Supplementary Note 2) The plurality of devices generate a start processing event when processing is started, an end processing event when processing is finished, and an alarm event when processing is interrupted. The work survey analysis system described in Appendix 1.

(Supplementary Note 3) The observation device observes the position of the operator by detecting the strength of a signal transmitted by a transmitter possessed by the operator at a plurality of positions. Work survey analysis system described.

(Supplementary Note 4) The work analysis apparatus regards the time period associated with each event in the work analysis information as the work time of the work corresponding to the event,
The work investigation and analysis system according to Note 1, wherein statistical information representing the work content and working time of the operator is generated and the statistical information is displayed.

(Supplementary Note 5) The work analysis device generates a flow line of the operator from the position of the operator observed by the observation device, and an image showing the positions of the plurality of devices in a diagram showing the inside of the factory. And the flow line are displayed.

(Supplementary Note 6) The work analysis device displays the content of the proximity event extracted from the production management information in an overlapping manner on an image showing the position of the device that generated the proximity event. The work survey analysis system described in appendix 5.

(Supplementary Note 7) The work content of the operator based on the position of the operator who works in the factory, and the production management information indicating the content and the time of occurrence of the event generated from the device arranged in the factory. In the work analysis device for analyzing, a stay time zone determination unit that determines a time zone in which the operator stays in the vicinity of each of the plurality of devices from a position of the operator and predetermined positions of the plurality of devices, and the time. The content of the near-field occurrence event that occurred in a device near the operator in the band is extracted from the production management information, and the extracted content of the near-field event is associated with the time zone determined by the stay time zone determination unit. And a work generation unit that generates work analysis information.

(Supplementary Note 8) The work analysis apparatus according to Supplementary Note 7, further comprising a display unit for generating statistical information from the work analysis information and displaying the statistical information. (Supplementary note 9) The work analysis apparatus according to supplementary note 7, further comprising a display unit for displaying an image showing the positions of the plurality of devices and the flow line in a diagram showing the inside of the factory.

(Supplementary Note 10) The display unit displays the content of the neighborhood occurrence event extracted from the production management information in an overlapping manner on an image showing the position of the device that has generated the neighborhood occurrence event. The work analysis device according to attachment 9.

(Supplementary Note 11) In a work investigation and analysis method for investigating and analyzing the work contents of an operator in a factory, a plurality of devices that are arranged in the factory and generate an event when the work of the operator is performed. The operation is monitored, the contents of the event and the event occurrence time are stored as production management information for each event that occurs in each of the plurality of devices, the position of the operator in the factory is observed, and the observed A proximity event that occurs in a device in the vicinity of the operator during the time period, by determining the time zone in which the operator stays in the vicinity of each of the plurality of devices from the position of the operator and the predetermined positions of the plurality of devices. Extracted from the production management information,
A work research and analysis method comprising a process of associating the extracted contents of the near event with the time zone to generate work analysis information.

(Supplementary Note 12) The operator's work is performed based on the flow line of the operator who works in the factory and the production management information indicating the content and the time of the event generated from the device arranged in the factory. In a work analysis program for analyzing the contents, the computer determines the time zone in which the operator stays in the vicinity of each of the plurality of devices from the flow line of the operator and the predetermined positions of the plurality of devices, and The content of a near-field occurrence event that has occurred in a device near the operator within the time zone is extracted from the production management information, and the content of the extracted near-field occurrence event is associated with the time zone to generate work analysis information. , A work analysis program characterized by executing processing.

(Supplementary Note 13) Based on the production management information indicating the flow line of the operator who works in the factory, the content of the event generated from the device arranged in the factory, and the generation time, the operator's work is performed. In a computer-readable recording medium recording a work analysis program for analyzing contents, in the computer, the operator is in the vicinity of each of the plurality of devices from the flow line of the operator and the predetermined positions of the plurality of devices. Determining the time zone in which the user stayed, extracting the content of the neighborhood event that occurred in the device near the operator within the time zone from the production management information, and extracting the content of the neighborhood event and the time zone. A recording medium characterized by causing a process to be performed by associating with, and generating work analysis information.

[0133]

As described above, according to the present invention, the operator determines the time zone in which he / she stays in the vicinity of the apparatus, associates the time zone with the event that occurred in the apparatus, and performs the operation. The analysis information is generated. Here, the work content of the operator can be determined by the event, and the time zone in which the operator stays near the device can be regarded as the work time for the event that occurred in the device. That is, the generation of the work analysis information means that the work content and work time performed by the plurality of devices are automatically acquired. This makes it possible to accurately analyze the work situation of the operator.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of an invention applied to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a system according to an embodiment of the present invention.

FIG. 3 is a diagram showing a hardware configuration example of a work analysis device used in the embodiment of the present invention.

FIG. 4 is a conceptual diagram showing how information is collected by the production apparatus.

FIG. 5 is a diagram showing an acquisition situation of operator position information.

FIG. 6 is a functional block diagram of a production management device and a work analysis device according to the embodiment of the present invention.

FIG. 7 is a diagram showing an example of lot processing history information.

FIG. 8 is a diagram showing an example of lot processing history information focused on an operator.

FIG. 9 is a diagram showing an example of device operation history information.

FIG. 10 is a diagram showing an example of flow line history information.

FIG. 11 is a diagram showing an example of work analysis information.

FIG. 12 is a flowchart showing the overall flow of work analysis processing.

FIG. 13 is a flowchart showing a procedure of flow line history information search processing.

FIG. 14 is a flowchart showing a procedure of lot processing history information search processing.

FIG. 15 is a flowchart illustrating a procedure of device operation history information search processing.

FIG. 16 is a flowchart showing a procedure of work analysis information generation processing.

FIG. 17 is a diagram showing a first display example of work analysis information.

FIG. 18 is a diagram showing a second display example of work analysis information.

FIG. 19 is a diagram showing a third display example of work analysis information.

FIG. 20 is a diagram showing a fourth display example of work analysis information.

[Explanation of symbols]

1 factory 1a-1f device 1g operator 2 Observation equipment 2a transmitter 3 Production control device 3a Production management information 4 Work analyzer 5 Display device 100 factories 111-116 device 120 private branch exchange 121-126 base stations 130 terminal device 140 operators 200 Production management device 300 work analyzer

Continued front page    F term (reference) 2F070 AA20 CC03 CC11 DD12 FF13                       GG07 GG08 HH05                 2F076 BA01 BD17 BE04 BE05 BE08                       BE12 BE17                 3C100 AA22 AA23 BB03 BB17 BB33                       CC14

Claims (5)

[Claims] 1. A work research and analysis system for researching and analyzing the work content of an operator in a factory, comprising: a plurality of devices arranged in the factory and generating an event when the work of the operator is performed; A production management device that monitors the operations of a plurality of devices and stores the content of the event and the event occurrence time for each event that has occurred in each of the plurality of devices as production management information; and the position of the operator in the factory. Observing device for observing, the position of the operator observed by the observing device and the predetermined position of the plurality of devices to determine the time period in which the operator stayed in the vicinity of each of the plurality of devices, the time The contents of the near-field occurrence event that occurred in the device near the operator in the obi is extracted from the production management information,
A work research and analysis system, comprising: a work analysis device that generates work analysis information by associating the extracted content of the near-field occurrence event with the time zone. 2. The work analysis device regards a time zone associated with each event in the work analysis information as a work time of a work corresponding to the event, and a statistic representing a work content and a work time of the operator. Generate information,
The work survey analysis system according to claim 1, wherein the statistical information is displayed. 3. The work analysis device generates a flow line of the operator from the position of the operator observed by the observation device, and an image showing the positions of the plurality of devices and an image showing the positions of the plurality of devices in a diagram showing the inside of the factory. The work survey analysis system according to claim 1, wherein the flow line is displayed. 4. The work content of the operator is analyzed based on the production management information indicating the position of the operator who works in the factory, the content of the event generated from the device arranged in the factory, and the generation time. In the work analysis device, a stay time period determination unit that determines a time period during which the operator stays in the vicinity of each of the plurality of devices from a position of the operator and predetermined positions of the plurality of devices; The content of the neighborhood occurrence event that occurred in the device in the vicinity of the operator is extracted from the production management information, and the contents of the extracted neighborhood occurrence event and the time zone determined by the stay time zone determination unit are associated with each other, A work analysis device comprising: a generation unit that generates work analysis information. 5. A work investigation and analysis method for investigating and analyzing the contents of work of an operator in a factory, comprising the operation of a plurality of devices arranged in the factory and generating an event when the work of the operator is performed. The contents of the event and the event occurrence time are stored as production management information for each event that occurs in each of the plurality of devices monitored, the position of the operator in the factory is observed, and the observed operator's position Content of a proximity event that occurred in a device in the vicinity of the operator within the time period by determining a time zone in which the operator stayed in the vicinity of each of the plurality of devices from a position and a predetermined position of the plurality of devices From the production control information, and the work analysis information is generated by associating the content of the extracted near-field occurrence event with the time period. To work research and analysis method characterized by comprising the processing.