JP7431588B2 - Worker management system, worker management method, and program - Google Patents

Description

Embodiments relate to a worker management system, a worker management method, and a program.

BACKGROUND ART In recent years, it has been proposed to obtain the fatigue and stress levels of workers working in a work process and utilize the information for production management. There is a desire to improve the ease of work for workers by utilizing such fatigue and stress levels of workers.

Japanese Patent Application Publication No. 2007-148730

The purpose of the embodiment is to provide a worker management system and a worker management method that can improve the ease of work for workers by utilizing the worker's fatigue level and stress level; An object of the present invention is to provide a program used for a worker management method.

The worker management system according to the embodiment stores process information including fatigue levels and stress levels of a plurality of processes, and worker information including skills, fatigue resistance levels, and stress resistance levels of a plurality of workers. a database, a determining unit that determines the workers who are capable of working in each of the processes based on the skills of the plurality of workers; an allocating unit that preferentially allocates the worker having the fatigue tolerance level and the stress tolerance level corresponding to the fatigue level and the stress level of the process.

FIG. 1 is a schematic diagram showing an application example of a worker management system according to an embodiment. FIG. 1 is a block diagram showing a worker management system according to an embodiment. FIG. 3(a) is a diagram illustrating worker information, and FIG. 3(b) is a graph illustrating the distribution of fatigue levels in common work, with the horizontal axis representing the fatigue level and the vertical axis representing the number of people. , FIG. 3(c) is a graph illustrating the distribution of the stress level in a common task, with the horizontal axis representing the stress level and the vertical axis representing the number of people. FIG. 4(a) is a diagram illustrating process information, and FIG. 4(b) is a graph illustrating the distribution of fatigue levels in each process, with the horizontal axis representing the fatigue level and the vertical axis representing the number of people. 4(c) is a graph illustrating the distribution of the stress level in each process, with the horizontal axis representing the stress level and the vertical axis representing the number of people. FIG. 5(a) is a diagram illustrating work information, FIG. 5(b) is a diagram illustrating plan data, and FIG. 5(c) is a diagram illustrating performance data. It is a flowchart which shows the method of allocating a worker to each process among the worker management methods according to the embodiment. FIG. 3 is a diagram illustrating a method of assigning workers to each process. FIG. 3 is a diagram illustrating a method of calculating cycle time corresponding to a worker and time during which the worker can continue working. FIG. 3 is a diagram illustrating an example of outputting an allocation result. It is a flowchart which shows the evaluation method of each worker among the worker management methods based on embodiment. It is a figure which illustrates the output of an evaluation result.

(Management system)
FIG. 1 is a schematic diagram showing an application example of the worker management system according to the present embodiment.
As shown in FIG. 1, the management system 1 is a system that assigns a worker X to each process a of a plurality of lines A from among a plurality of workers X, and evaluates each worker X. Here, "line A" means a series of steps a. Note that, hereinafter, each of the plurality of lines A is distinguished by a character string that is a combination of A and a number, and each of the plurality of processes a is distinguished by a character string that is a combination of a and a number. For example, line A1 consists of a series of steps a11, a12, and a13. Line A2 consists of a series of steps a21, a22, and a23. Note that the management system 1 may be applied to only one line A.

FIG. 2 is a block diagram showing a worker management system according to this embodiment.
As shown in FIG. 2, the management system 1 includes a database D, an input section 10, a judgment section 20, an allocation section 30, a work condition setting section 41, an estimation section 42, and a judgment section 50. , a worker addition section 61, a plan change section 62, an evaluation section 70, and an output section 80. Each part will be explained in detail below.

(database)
The database D stores worker information D1, process information D2, work information D3, and plan data D4 before the management system 1 assigns the worker X to each process a. Further, in the database D, performance data D5 is stored before the management system 1 evaluates each worker X.

(Worker information)
Figure 3(a) is a diagram illustrating worker information, and Figure 3(b) shows the distribution of fatigue levels of multiple workers in a common task, with the horizontal axis representing the fatigue level and the vertical axis representing the number of people. FIG. 3C is a graph illustrating the distribution of the stress levels of a plurality of workers in a common task, with the horizontal axis representing the stress level and the vertical axis representing the number of people.
As shown in FIG. 3A, the worker information D1 includes, for example, the skill K, fatigue tolerance HXt, and stress tolerance SXt of the plurality of workers X.

The skill K is not particularly limited as long as it is information that allows the determination unit 20 (described later) to determine the worker X who can work in each process a. Skill K may be, for example, information on whether each worker X has been trained in each process a, or whether or not each worker It may be information of

The "fatigue resistance degree HXt" is a relative evaluation of the resistance of the muscles of the plurality of workers X to physical loads. The degree of fatigue resistance HXt is expressed as a numerical value, and the larger the value, the higher the resistance to physical load, and the smaller the value, the lower the resistance to physical load. For example, worker X who has a large amount of muscle strength or stamina has a high resistance to physical loads, and thus has a high degree of fatigue resistance HXt.

The fatigue resistance degree HXt of each worker X is obtained before using the management system 1. The fatigue resistance degree HXt of each worker X can be obtained, for example, as follows.

First, all the workers X perform a common task to measure the degree of fatigue resistance HXt. At this time, a measuring device is attached to each worker X, and biological data indicating physical load such as respiration rate is acquired. Based on the acquired biological data, the degree of fatigue HX of each worker X in a common task is relatively evaluated. As a result, as shown in FIG. 3(b), data showing the distribution of fatigue levels HX of multiple workers It will be done. The peak value of the distribution data of the fatigue level HX is set as the standard fatigue level Ho for the common work. The fatigue resistance degree HXt of each worker X is calculated from the following formula (1).

HXt=Ho/HX Formula (1)
HXt: Fatigue resistance level of worker X Ho: Standard fatigue level HX: Fatigue level of worker X in common work

The "stress tolerance level SXt" is a relative evaluation of the mental load tolerance of the plurality of workers X. The stress resistance degree SXt is expressed as a numerical value, and the larger the value, the higher the resistance to mental load, and the smaller the value, the lower the resistance to mental load.

The stress tolerance level SXt of each worker X is obtained before using the management system 1. The stress tolerance degree SXt of each worker X can be obtained, for example, as follows.

First, all workers X perform a common task to measure stress tolerance SXt. At this time, a measuring device is attached to each worker X, and biological data indicating mental load such as an electrocardiogram waveform is acquired. Based on the acquired biological data, the stress level SX of each worker X in a common task is relatively evaluated. As a result, as shown in FIG. 3(c), data showing the distribution of the stress level SX of multiple workers X in a common task is obtained, with the stress level SX on the horizontal axis and the number of people p on the vertical axis. It will be done. The peak value of the distribution data of the stress level SX is set as the standard stress level So of the common work. The stress tolerance degree SXt of each worker X is calculated from the following equation (2).

SXt=So/SX formula (2)
SXt: Stress tolerance level of worker X So: Standard stress level SX: Stress level of worker X in common work

Note that as worker X gains experience, skill K, fatigue tolerance HXt, and stress tolerance SXt may change. Therefore, the worker information D1 may be updated.

(Process information)
FIG. 4(a) is a diagram illustrating process information, and FIG. 4(b) is a graph illustrating the distribution of fatigue levels in each process, with the horizontal axis representing the fatigue level and the vertical axis representing the number of people. 4(c) is a graph illustrating the distribution of the stress level in each process, with the horizontal axis representing the stress level and the vertical axis representing the number of people.
As shown in FIG. 4A, the process information D2 includes, for example, the fatigue level Ha, stress level Sa, and standard cycle time ta of the plurality of processes a.

"Fatigue degree Ha of process a" is a relative evaluation of physical loads in a plurality of processes a. The degree of fatigue Ha is expressed numerically; the larger the value, the greater the physical load, and the smaller the value, the smaller the physical load. For example, in process a that involves a lot of physical movement or work that involves transporting heavy objects, the degree of fatigue Ha is high because the physical load is large.

The "stress level Sa of process a" is a relative evaluation of the mental load in a plurality of processes a. As for the stress level Sa, the larger the value, the larger the mental load, and the smaller the value, the smaller the mental load. For example, in a process that involves a lot of detailed work, the mental load is large, so the stress level Sa is high.

The fatigue level Ha and stress level Sa of each process a are obtained before using the management system 1. The fatigue level Ha and stress level Sa of each process a can be obtained, for example, by the following procedure.

First, a standard operation for one cycle of each process a is determined. A plurality of workers X perform one cycle of standard work for each process a within a predetermined time. At this time, a measuring device is attached to each worker X, and biometric data indicating physical load and biometric data indicating mental load are acquired. Based on these acquired biological data, the fatigue level HX and stress level SX of each worker X in each process a are relatively evaluated.

As a result, as shown in FIG. 4(b), data showing the distribution of the fatigue level HX of multiple workers X in each process a is obtained, with the horizontal axis representing the fatigue level HX and the vertical axis representing the number of workers p. It will be done. Furthermore, as shown in FIG. 4(c), data showing the distribution of the stress level SX of multiple workers X in each process a is obtained by setting the stress level SX on the horizontal axis and the number of people p on the vertical axis. . The fatigue level Ha of each process a is calculated from the following equation (3). Moreover, the stress degree Sa of each process a is calculated from the following formula (4).

Ha=Hpa/Ho Formula (3)
Ha: Fatigue level in process a Ho: Standard fatigue level Hpa: Peak value of distribution data of fatigue level HX in process a

Sa=Spa/So formula (4)
Sa: Stress level of process a So: Standard stress level Spa: Peak value of distribution data of stress level SX in process a

In this way, the fatigue resistance degree HXt and the fatigue degree Ha can be defined using the standard fatigue degree Ho as a common reference. Further, the stress tolerance level SXt and the stress level Sa can be defined using the standard stress level So as a common reference. However, the specific procedure for acquiring the fatigue tolerance degree HXt, the stress tolerance degree SXt, the fatigue degree Ha, and the stress degree Sa is not limited to the above.

"Standard cycle time ta for process a" means the standard time required to perform one cycle of standard work for process a. The standard cycle time ta is obtained in accordance with a method such as the WF method (Work Factor Method) or the MTM method (Method Time Measurement).

(Work information)
FIG. 5(a) is a diagram illustrating work information, FIG. 5(b) is a diagram illustrating plan data, and FIG. 5(c) is a diagram illustrating performance data.
As shown in FIG. 5(a), the work information D3 is, for example, a work schedule that shows schedules of each worker X's attendance, vacation, etc. for each date within a certain period.

(Planning data)
As shown in FIG. 5(b), the plan data D4 is, for example, data indicating a work plan for each date within a certain period. For example, if each line A is a line that produces products, the plan data D4 includes the product y scheduled to be produced in each line A, the quantity n planned to be produced for each product y, and the like.

(actual data)
The performance data D5 is updated, for example, each time the day's work on each line A is completed. The performance data D5 includes a process a to which the worker X is assigned, and a completion rate J of the work requested on that day in the process a. The achievement rate J is defined, for example, by the following formula (5).
Achievement rate J = Actual number of processes on that day/Number of processes requested on that day Equation (5)

(input section)
As shown in FIG. 2, the input unit 10 receives input to the management system 1. The user instructs the management system 1 to assign worker X to each process a, evaluate worker X, etc. using a terminal. The input unit 10 receives instructions for assigning worker X, instructions for evaluating worker X, etc. from the terminal.

(Judgment Department)
For example, when the input unit 10 receives an instruction from the terminal to allocate worker Process a that requires operation is determined for each date. Then, the determination unit 20 determines the worker X who is capable of working in each process a that requires work, based on the work information D3 and the skill K of the worker X, for each date when assignment is requested.

(assignment section)
The allocation unit 30 refers to the worker information D1 and the process information D2 in the database D, and assigns fatigue corresponding to the fatigue level Ha and the stress level Sa of each process a to each process a based on the judgment result by the judgment unit 20. A worker X having a tolerance level HXt and a stress tolerance level SXt is preferentially assigned.

"Fatigue tolerance level HXt and stress tolerance level SXt corresponding to fatigue level Ha and stress level Sa" means that fatigue tolerance level HXt is equal to or higher than fatigue level Ha or is a value close to fatigue level Ha, and stress tolerance level SXt This means that the stress level is greater than or equal to the stress level Sa or is close to the stress level Sa. Thereby, it is possible to assign to each of the plurality of processes a a worker X who is compatible not only with the skill K of each worker X but also with respect to physical load and mental load.

For example, it may not be possible to assign worker X, who has a fatigue tolerance level HXt greater than or equal to the fatigue level Ha and a stress tolerance level SXt greater than or equal to the stress level Sa, to all processes a. In such a case, the assignment unit 30 assigns each process a so that the sum of the cycle times tX corresponding to the worker Assign worker X to.

"Corresponding cycle time tX" refers to the comparison result between the fatigue tolerance level HXt of worker X and the fatigue level Ha of the assigned process a, and the comparison result between the stress tolerance level SXt of worker It means the working time per cycle corresponding to each worker X assumed from the comparison result with Sa.

If worker , can work within the standard cycle time ta with physical and mental leeway. On the other hand, if worker In order to perform the work within ta, the worker X is subjected to physical and mental loads.

Therefore, the assignment unit 30 estimates the cycle time tX corresponding to the worker X assigned to each process a using the following procedure. First, the allocation unit 30 calculates the fatigue rate RH based on the following equation (6).

RH=Ha/HXt Formula (6)
RH: Fatigue rate Ha: Fatigue level of process a HXt: Fatigue tolerance level of worker X

If the physical load applied to worker It can be estimated that the physical load on worker X when working in process a is smaller than the standard load. When fatigue rate RH>1, (fatigue level Ha of process a>fatigue tolerance level HXt of worker It can be estimated that it is also large.

Further, the allocation unit 30 calculates the stress rate RS based on the following formula (7).

RS=Sa/SXt Formula (7)
RS: Stress rate Sa: Stress level of process a SXt: Stress tolerance level of worker X

If the mental load applied to worker It can be estimated that the mental load on Worker X when working in process a is smaller than the standard load. When the stress rate RS>1, (stress level Sa of process a>stress tolerance level SXt of worker can be estimated to be large.

When both the fatigue rate RH and the stress rate RS are 1 or less (RH≦1∧RS≦1), the allocation unit 30 determines that (cycle time tX corresponding to worker X = standard cycle time of assigned process a) It is estimated that ta). When at least one of the fatigue rate RH and the stress rate RS is larger than 1 (RH>1∨RS>1), the allocation unit 30 estimates the cycle time tX corresponding to the worker X based on the following formula (8). do.

tX=ta×R Formula (8)
tX: Cycle time corresponding to worker X ta: Standard cycle time of process a R: Ratio of the greater of fatigue rate RH or stress rate RS

(Working condition setting section)
The work condition setting unit 41 sets a scheduled cycle time tp and a scheduled operating time Ta for each process a for each process a.

"Planned cycle time tp" means a scheduled cycle time for instructing worker X assigned to each process a to complete one cycle of standard work. For example, the work condition setting unit 41 sets the maximum value of the standard cycle time ta of the process a belonging to the same line A to the scheduled cycle time tp of each process a belonging to the line A. That is, the scheduled cycle time tp of the series of processes a is set so that the working time is matched to the process a whose standard cycle time ta is the slowest.

"Scheduled operating time Ta" means the scheduled time for operating each process a. The work condition setting unit 41 sets the scheduled operating time Ta based on, for example, the scheduled cycle time tp and the scheduled production quantity n of the planning data D4.

Note that the scheduled cycle time tp and the scheduled operating time Ta do not need to be set by the work condition setting unit 41. For example, the scheduled cycle time tp and the scheduled operating time Ta may be set by a user on a terminal and input into the management system 1 through the input unit 10. Further, for example, the scheduled cycle time tp and the scheduled operating time Ta may be included in the planning data D4.

(Estimation Department)
The estimation unit 42 estimates the time TX that the worker X assigned to each process a can continue to work.

If the scheduled cycle time tp of the assigned process a is greater than or equal to the cycle time tX corresponding to worker X (tp≧tX), worker X performs work in each cycle with physical and mental leeway. It is estimated that this can be done. Therefore, it is estimated that the worker X can continue to work during the standard continuous working time To.

The "standard continuous working time To" is not particularly limited, but is, for example, the sum of the prescribed working hours per day and the maximum overtime hours allowed by regulations. For example, if the prescribed working hours are 8 hours and the maximum overtime allowed by regulations is 2 hours, the standard continuous working time To is 10 hours.

If the scheduled cycle time tp of the assigned process a is shorter than the cycle time tX corresponding to worker X (tp<tX), worker is estimated to be added. Therefore, worker X is considered to be able to continue working only for a shorter time than the standard continuous working time To.

For example, the estimating unit 42 estimates the time TX that the worker X assigned to each process a can continue to work using the following procedure. First, the estimation unit 42 calculates the load factor RT based on the following equation (9).

RT=tX/tp Formula (9)
RT: Load rate tX: Cycle time corresponding to worker X tp: Scheduled cycle time of process a

When the load factor RT is less than or equal to 1 (RT≦1), the estimating unit 42 estimates that (time TX during which worker X can continue to work = standard time To during which worker X can work continuously). When the load factor RT is larger than 1 (RT>1), the estimation unit 42 estimates the time TX during which the worker X can continue working based on the following formula (10). Note that the index k is, for example, k=2.

TX=To/RT ^k formula (10)
TX: Time that worker X can work continuously To: Standard time that worker X can work continuously RT: Load rate k: Index

(Judgment Department)
The determining unit 50 determines whether the scheduled operating time Ta set by the work condition setting unit 41 for each process a is less than or equal to the specified maximum working time Ts, and the worker X to whom the scheduled operating time Ta is assigned continues to work. It is determined whether the time is less than or equal to the possible time TX (Ta≦Ts∧Ta≦TX).

"Standard maximum working hours Ts" means the maximum amount of continuous working time allowed by company regulations, laws, etc. The prescribed maximum working hours Ts is, for example, the sum of the prescribed working hours per day and the maximum overtime hours allowed by regulations. For example, if the prescribed working hours are 8 hours and the maximum overtime allowed by regulations is 2 hours, the prescribed maximum working hours Ts will be 10 hours.

(Additional worker section)
The worker addition unit 61 determines whether the scheduled working time Ta set by the work condition setting unit 41 is longer than the specified maximum working time Ts, or whether the scheduled working time Ta is the time TX during which worker X can continue to work. For process a that is longer than (Ta>TX), it is determined whether worker X can be added. Then, the worker adding unit 61 adds worker X if worker X can be added.

The worker addition unit 61, for example, for process a in which the scheduled working time Ta is longer than the specified maximum working time Ts, but the scheduled working time Ta is less than or equal to the time TX during which worker X can continue to work, A worker X who can work continuously for a period of time obtained by subtracting a specified maximum working time Ts from the scheduled working time Ta is added. The added worker X is replaced by the worker X assigned by the assignment unit 30, for example, after the maximum working time Ts has elapsed. Then, the added worker X works instead of the worker X assigned by the assignment unit 30 for a time obtained by subtracting the maximum working time Ts from the scheduled working time Ta.

For example, for a process a in which the scheduled working time Ta is longer than the time TX during which worker Worker X, who can work continuously for the time after deducting TX, is added to process a. The added worker X is replaced by the worker X assigned by the assignment unit 30, for example, after the time TX during which the worker X assigned by the assignment unit 30 can continue working has elapsed. Then, the added worker ,work for.

(Plan change department)
When the worker adding section 61 determines that worker X cannot be added, the plan changing section 62 changes the scheduled working time Ta to a time TX during which worker X can continue working. Further, the work condition setting unit 41 changes the scheduled production quantity n in response to changing the scheduled operating time Ta.

(Evaluation Department)
For example, when the input unit 10 receives an evaluation instruction for each worker X from a terminal, the evaluation unit 70 calculates the achievement rate J, fatigue rate RH, and stress rate RS of the worker X assigned to each process a. Based on this, the worker X assigned to each process a is evaluated. Note that the evaluation unit 70 may evaluate each worker X at a predetermined timing such as every time a day's work is completed.

The evaluation unit 70 calculates the evaluation score G of the worker X, for example. The evaluation score G is expressed as a numerical value, and the larger the value, the higher the evaluation, and the smaller the value, the lower the evaluation. If the fatigue rate RH and stress rate RS of each worker X are 1 or less (RH≦1∧RS≦1), the evaluation unit 70 sets (evaluation score G=achievement rate J). For example, when the ratio of at least one of the fatigue rate RH and the stress rate RS of the worker X is larger than 1 (RH>1∨RS>1), the evaluation unit 70 calculates the Calculate the evaluation score G.

G=J×R
J: Achievement rate R: Ratio of the larger of fatigue rate RH or stress rate RS Formula (11)

(Output section)
The output unit 80 outputs, for example, the allocation result by the allocation unit 30, the addition result of worker X by the worker addition unit 61, the change result by the plan change unit 62, etc. Further, the output unit 80 outputs, for example, the evaluation result by the evaluation unit 70.

The management system 1 is realized, for example, by a computer having a CPU (Central Processing Unit) and a memory. The management system 1 may be provided by having a computer read a storage medium storing a program for causing the computer to execute the worker management method described below, and installing the program in the computer. The recording medium is, for example, a DVD, CD, FD, MO, memory card, or the like.

(Management method for workers)
Next, a worker management method according to this embodiment will be explained.
FIG. 6 is a flowchart showing a method of allocating workers to each process in the worker management method according to the present embodiment.

(Worker assignment method)
First, among the management methods, the method of assigning workers to each process will be explained.
First, the user instructs the management system 1 via the terminal to assign worker X to each process a, and also specifies the period for the assignment. Thereby, the input unit 10 receives the allocation instruction and also acquires the period during which the allocation is to be performed. The period during which the assignment is made may be just one day, or may be one or more days.

Next, the determining unit 20 refers to the plan data D4 of the database D and determines the process a that requires work for each date within the specified period. Then, the determination unit 20 determines the worker X who can work in each process a that requires work, based on the work information D3 and skill K of each worker X, for each date within the specified period ( Step S1).

Next, the allocation unit 30 refers to the worker information D1 and the process information D2 in the database D, and determines the fatigue level Ha and A worker X having a fatigue tolerance level HXt and a stress tolerance level SXt corresponding to the stress level Sa is preferentially assigned (step S2). An example of the allocation method will be described below.

FIG. 7 is a diagram illustrating a method of assigning workers to each process.
For example, in step a11, the fatigue level Ha is 1.5 and the stress level Sa is 0.7. Therefore, in step a11, when the fatigue level Ha and the stress level Sa are 1 as a standard, the physical load is large and the mental load is small. In step a12, the fatigue level Ha is 0.9 and the stress level Sa is 1.2. Therefore, step a12 is a step with a small physical load and a large mental load. In step a13, the fatigue level Ha is 2.0 and the stress level Sa is 1.5. Therefore, step a13 is a step that requires a large physical and mental load.

For example, the worker X1 has a fatigue tolerance HXt of 0.8 and a stress tolerance SXt of 1.2. Therefore, when the fatigue tolerance degree HXt and the stress tolerance degree SXt are 1 as a standard, the worker X1 has low tolerance to physical load and high tolerance to mental load. The worker X2 has a fatigue tolerance level HXt of 1.9 and a stress tolerance level SXt of 1.3. Therefore, the worker X2 has high tolerance to physical load and high tolerance to mental load. The worker X3 has a fatigue tolerance HXt of 1.8 and a stress tolerance SXt of 0.8. Therefore, worker X3 has a high tolerance for physical loads and a low tolerance for mental loads.

In the example shown in FIG. 7, it is not possible to assign worker X, who has a fatigue tolerance level HXt greater than or equal to the fatigue level Ha and a stress tolerance level SXt greater than or equal to the stress level Sa, to any process a. Therefore, for example, the assignment unit 30 assigns workers X to each process a so that the sum of cycle times tX corresponding to the workers Assign.

Specifically, the assignment unit 30 estimates, for example, the cycle time tX corresponding to the worker X assigned to each process a for each of the plurality of assignment patterns. The allocation unit 30 calculates the sum of cycle times tX corresponding to the workers X assigned to each process a for each of the plurality of allocation patterns, and selects the allocation pattern with the minimum sum.

As a result, a worker X having a fatigue tolerance level HXt and a stress tolerance level SXt corresponding to the fatigue level Ha and stress level Sa of each process a is preferentially assigned to each process a. For example, worker X3, who has high tolerance to physical load and low tolerance to mental load, is assigned to process a11, which has a high physical load and a low mental load. Worker X1, who has low tolerance to physical load and high tolerance to mental load, is assigned to process a12, which has a low physical load and a large mental load. Worker X2, who has high tolerance to physical load and high tolerance to mental load, is assigned to process a13, which has a large physical load and a high mental load.

Next, the work condition setting unit 41 sets a scheduled cycle time tp and a scheduled operating time Ta of each process a for each process a (step S3). The work condition setting unit 41 sets the scheduled cycle time tp based on the standard cycle time ta of each process a of the process information D2, for example. The work condition setting unit 41 sets, for example, the scheduled operating time Ta based on the scheduled cycle time tp and the plan data D4.

Next, the estimating unit 42 calculates the time TX that the worker X assigned to each process a can continue to work (step S4).

FIG. 8 is a diagram illustrating a method for calculating the cycle time corresponding to a worker and the time during which the worker can work continuously.
For example, as shown in FIG. 8, the fatigue rate RH and stress rate RS of worker X3 assigned to process a11 are 1 or less. Therefore, the estimation unit 42 estimates that (cycle time tX corresponding to worker X3=standard cycle time ta of process a11). Since the cycle time tX corresponding to the worker X3 is 10 seconds, when the planned cycle time tp is 10 seconds, the load factor RT expressed by the above equation (9) is 1. Therefore, the estimating unit 42 estimates that (the time during which the worker X3 can continue to work continuously TX = the standard time during which the worker X3 can continue to work To = 10 hours).

The fatigue rate RH of the worker X1 assigned to process a12 is greater than 1, and the stress rate RS is 1. Therefore, the cycle time tX corresponding to the worker X1 is estimated based on the above equation (8) with R=RS. Therefore, the estimated cycle time tX corresponding to the worker X1 is longer than 10 seconds, which is the standard cycle time ta of step a12. Since the cycle time tX corresponding to the worker X1 is longer than 10 seconds, the load factor RT is greater than 1 when the planned cycle time tp is 10 seconds. Therefore, the time TX during which the worker X1 can continue to work is estimated based on the above equation (10). Therefore, the estimated time TX during which the worker X1 can continue to work is shorter than 10 hours, which is the standard time To during which the worker X1 can continue to work.

The fatigue rate RH and stress rate RS of the worker X2 assigned to process a13 are greater than 1, and the stress rate RS is greater than the fatigue rate RH. Therefore, the cycle time tX corresponding to the worker X2 is estimated based on the above equation (8) with R=RS. Therefore, the estimated cycle time tX corresponding to worker X2 is longer than 10 seconds, which is the standard cycle time ta of step a13. Since the cycle time tX corresponding to the worker X2 is greater than 10 seconds, the load factor RT is greater than 1 when the scheduled cycle time tp is 10 seconds. Therefore, the time TX during which the worker X2 can continue to work is estimated based on the above equation (10). The estimated time TX during which the worker X2 can continue to work is shorter than 10 hours, which is the standard time To during which the worker X2 can continue to work.

Next, the determination unit 50 determines that the scheduled operating time Ta set by the work condition setting unit 41 for each process a is less than or equal to the specified maximum working time Ts, and that the scheduled operating time Ta is such that the worker It is determined whether the time is less than or equal to the possible time TX (Ta≦Ts∧Ta≦TX) (step S5).

The determination unit 50 determines that the scheduled working time Ta is less than or equal to the specified maximum working time Ts, and that the scheduled working time Ta is less than or equal to the time TX during which worker X can continue to work (Ta≦Ts∧Ta≦TX ) (S5: Yes), the worker adding unit 61 does not add the worker, and the plan changing unit 62 does not change the scheduled operating time Ta and the planned production quantity n.

If the determination unit 50 determines that the scheduled working time Ta is longer than the specified maximum working time Ts (Ta>Ts), or the scheduled working time Ta is longer than the continuous working time TX for worker X. If it is determined that (Ta>TX) (S5: No), the worker addition unit 61 determines whether or not worker X can be added (step S6).

When the worker adding unit 61 determines that worker X can be added (step S6: yes), the worker adding unit 61 adds worker X (step S7).

If the worker addition unit 61 determines that worker X cannot be added (step S6: no), the plan change unit 62 changes the scheduled working time Ta to a time TX during which worker (Step S8). Further, in accordance with the change in the scheduled operating time Ta, the plan changing unit 62 changes the planned production quantity n.

FIG. 9 is a diagram illustrating the output of the allocation result.
Next, the output unit 80 outputs the results (step S9). The output unit 80 outputs, for example, the worker X assigned to each process a, the time TX that the assigned worker X can continue to work, the worker The scheduled operating time Ta, the planned production type y, whether or not the planned production quantity n has changed, and the planned production quantity n before and after the change are output. The user confirms the output and determines the worker X to be assigned to each process a, the worker let

(Worker evaluation method)
Next, among the worker management methods according to the present embodiment, a method for evaluating each worker will be described.
FIG. 10 is a flowchart showing an evaluation method for each worker among the worker management methods according to the present embodiment.
First, the user instructs the management system 1 via the terminal to evaluate worker X for each process a, and also specifies the period during which the evaluation is to be performed. As a result, the input unit 10 receives the evaluation instruction and also acquires the evaluation period and the like. The period for performing the evaluation may be just one day, or may be one or more days.

Next, the evaluation unit 70 identifies the process a to which each worker X is assigned from the performance data D5 (step S21).

Next, the evaluation unit 70 calculates the fatigue rate RH expressed by the above formula (6) from the fatigue resistance level HXt of each worker X and the fatigue level Ha of the assigned process a, and calculates the fatigue rate RH of each worker X. The stress rate RS expressed by equation (7) is calculated from the stress tolerance level SXt and the stress level Sa of the assigned process a (step S22).

Next, the evaluation unit 70 calculates the evaluation score G of each worker X based on the achievement rate J, fatigue rate RH, and stress rate RS of each worker X (step S23). The evaluation unit 70 sets (evaluation score G=achievement rate J) when the fatigue rate RH and stress rate RS of each worker X are 1 or less. The evaluation unit 70 calculates the evaluation score G of the worker X based on the above formula (11) when the ratio of at least one of the fatigue rate RH or the stress rate RS of each worker X is greater than 1.

FIG. 11 is a diagram illustrating evaluation results.
Next, the output unit 80 outputs the evaluation result (step S24). The output unit 80 outputs, for example, the assigned process a, the achievement rate J, the fatigue rate RH, the stress rate RS, and the evaluation score G of each worker X. As shown in FIG. 11, even if the achievement rate J is 1, if the ratio of at least one of the fatigue rate RH and the stress rate RS is greater than 1, the evaluation score G of the workers X1, X2, and growing.

Next, the effects of this embodiment will be explained.
In this embodiment, the allocation unit 30 assigns a fatigue tolerance level HXt and a stress tolerance level SXt corresponding to the fatigue level Ha and stress level Sa of each process a to each process a based on the determination result by the determination unit 20. The worker Thereby, it is possible to assign to each of the plurality of processes a a worker X who is compatible not only with the skill K of each worker X but also with respect to physical load and mental load. As a result, it is possible to improve the workability of the worker X by utilizing the worker's fatigue level and stress level.

In the present embodiment, the assignment unit 30 also calculates the comparison result between the fatigue level Ha of each process a and the fatigue resistance level HXt of the worker X assigned to each process a, and the stress level Sa of each process a. Based on the comparison result with the stress tolerance level SXt of the worker X assigned to each process a, the cycle time tX corresponding to the worker X assigned to each process a is estimated. By utilizing the cycle time tX corresponding to the worker X estimated in this way, it is possible to improve the workability of the worker X.

Further, in the present embodiment, the assignment unit 30 assigns each process a to a minimum sum of cycle times tX corresponding to the workers X assigned to each process a based on the determination result by the determination unit 20. Assign worker X to the user. Therefore, the load on the worker X assigned to each process a can be reduced, and the ease of work for each worker X can be improved.

In the present embodiment, the management system 1 further includes an estimation unit 42 that estimates the time TX during which the assigned worker X can continue to work for each process a based on the above equation (11). Therefore, from the viewpoint of the physical and mental load on each worker X, it can be determined whether the worker X is able to continue working over the scheduled working time Ta of each process a.

Furthermore, in the management system 1 according to the present embodiment, for each process a, if the time TX in which the worker X to whom the scheduled working time Ta is assigned is longer than the worker An additional section 61 is further provided. Therefore, even if the worker X assigned to the assignment unit 30 is unable to work during the scheduled working time Ta, it is possible to suppress the planned production quantity n from decreasing.

Moreover, the management system 1 according to the present embodiment further includes an evaluation unit 70 that evaluates the worker X. The evaluation unit 70 compares the achievement rate J of the worker X assigned to each process a, the fatigue level Ha of each process a, and the fatigue resistance level HXt of the worker X assigned to each process a, The worker X assigned to each process a is evaluated based on the comparison result between the stress level Sa of each process a and the stress tolerance level SXt of the worker X assigned to each process a. Therefore, evaluation results corresponding to the fatigue tolerance level HXt and the stress tolerance level SXt of each worker X can be obtained.

According to the embodiments described above, there is provided a worker management system and a worker management method that can improve the ease of work for workers by utilizing the fatigue and stress levels of workers, and A management system and a program used for a worker management method can be realized.

Although the embodiments of the present invention have been described above, the above embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included within the scope and gist of the invention, as well as within the scope of the claimed invention and its equivalents.

1: Management system 10: Input section 20: Judgment section 30: Assignment section 41: Work condition setting section 42: Estimation section 50: Judgment section 61: Worker addition section 62: Plan change section 70: Evaluation section 80: Output section A : Line D: Database D1: Worker information D2: Process information D3: Work information D4: Plan data D5: Actual data G: Evaluation score HX: Worker fatigue level HXt: Worker fatigue tolerance Ha: Process fatigue Degree Ho: Standard fatigue level J: Achievement rate K: Skill RH: Fatigue rate RS: Stress rate RT: Load rate SX: Stress level of worker SXt: Stress tolerance level of worker Sa: Stress level of process So: Standard stress Ta: Scheduled operating time Ts: Specified maximum working time TX: Time during which a worker can work continuously X: Worker a: Process k: Index n: Quantity p: Number of people tX: Cycle time appropriate for the worker ta: Standard cycle time for the process tp: Scheduled cycle time set for the process y: Product type

Claims (8)

a database storing process information including fatigue levels and stress levels of a plurality of processes, and worker information including skills, fatigue resistance levels, and stress resistance levels of a plurality of workers;
a determination unit that determines the workers who are capable of working in each of the steps based on the skills of the plurality of workers;
Preferentially allocating to each of the processes the workers who have the fatigue tolerance and stress tolerance corresponding to the fatigue and stress levels of the respective processes based on the determination result by the determination unit. an allocation section;
Equipped with
The allocation unit is
A comparison result between the fatigue degree of each of the processes and the fatigue resistance of the worker assigned to each of the processes, and the stress level of each of the processes and the fatigue resistance of the worker assigned to each of the processes. A worker management system that estimates a cycle time suitable for the worker based on a comparison result with the stress tolerance level of the worker. The assignment unit assigns the workers to each of the processes so that the sum of the cycle times corresponding to the workers assigned to each of the processes is minimized based on the determination result by the determination unit. The worker management system according to claim 1 , which allocates workers. The process information includes standard cycle times for each of the processes,
The allocation unit is
For each of the processes, if the fatigue tolerance level of the assigned worker is smaller than the fatigue level of the process, or the stress tolerance level of the assigned worker is smaller than the stress level of the process. 3. The worker management system according to claim 1, wherein the cycle time corresponding to the worker is estimated based on the following equation (1).
tX=ta×R Formula (1)
(here,
tX is the cycle time corresponding to the worker;
ta is the standard cycle time of the process;
R is a fatigue rate expressed by the fatigue level of the process/the fatigue tolerance level of the assigned worker, or the stress level of the process/the stress tolerance level of the assigned worker. This is the ratio of the larger of the stress rates. ) For each of the steps, the method further includes an estimating unit that estimates the amount of time that the assigned worker can continue to work,
The estimation unit is
for each said process, said cycle time corresponding to said assigned worker is longer than the scheduled cycle time set for said process;
Calculating the load factor expressed as (the cycle time corresponding to the worker/the scheduled cycle time of the process);
The worker according to any one of claims 1 to 3 , wherein the time during which the worker is able to work continuously in a standard manner is estimated as the time during which the worker is able to work continuously, the time being corrected by the load factor. management system. For each of the steps, if the scheduled operating time of each of the steps is longer than the time that the worker assigned to each of the steps can continue to work, a worker addition unit that adds the worker; The worker management system according to claim 4 , further comprising: further comprising an evaluation unit that evaluates the worker,
The evaluation department is
Comparison results between the achievement rate of the worker assigned to each of the steps, the fatigue level of each of the steps, and the fatigue resistance of the worker assigned to each of the steps; Claims 1 to 5, wherein the workers assigned to each of the processes are evaluated based on a comparison result between the stress level of the process and the stress tolerance level of the workers assigned to each of the processes. A worker management system according to any one of the above. The judgment unit refers to a database in which process information including fatigue levels and stress levels of multiple processes and worker information including skills, fatigue tolerance levels, and stress tolerance levels of multiple workers are stored. a step of determining the workers who are capable of working in each based on the skills of the workers;
The allocation unit gives priority to the worker who has the fatigue tolerance level and the stress tolerance level corresponding to the fatigue level and the stress level of the respective process for each of the processes based on the determination result. a process to be assigned to;
The assignment unit compares the fatigue degree of each of the processes with the fatigue tolerance of the worker assigned to each of the processes, and compares the stress level of each of the processes with the fatigue resistance of the worker assigned to each of the processes. estimating a cycle time corresponding to the worker based on a comparison result with the stress tolerance level of the worker assigned to the worker;
How to manage workers who are equipped with to the computer,
By referring to a database in which process information including fatigue levels and stress levels of a plurality of processes and worker information including skills, fatigue resistance levels, and stress resistance levels of a plurality of workers are stored, a step of determining the worker who is capable of working in each of the steps based on the skill of the worker;
a procedure for preferentially assigning, to each of the processes, the worker having the fatigue tolerance and stress tolerance corresponding to the fatigue and stress levels of the respective processes based on the determination result; ,
A comparison result between the fatigue degree of each of the processes and the fatigue resistance of the worker assigned to each of the processes, and the stress level of each of the processes and the fatigue resistance of the worker assigned to each of the processes. a step of estimating a cycle time suitable for the worker based on a comparison result with the stress tolerance level of the worker;
A program to run.

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