JPH08161091A - Fatigue monitor device incorporated in computer - Google Patents

Abstract

PURPOSE: To successively synthetically discriminate the degree of fatigue of a worker who operates a computer. CONSTITUTION: The computer is provided with a main body part 1, at least a kind of input tool like a keyboard 2, and a display device 3. A fatigue monitor device incorporated in the computer us built in the main body part 1 and monitors the degree of fatigue of the worker who operates the keyboard 2. Classifications and the frequency of signals inputted from the keyboard 2 in accordance with the operation of the worker are stored in a storage mans 14 in time series. An analysis means 15 analyzes stored classifications and frequency of signals to successively calculate plural various fatigue parameters correlated to the degree of fatigue of the worker. These parameters are related to the misoperation rate, the operating speed, the operation duration, etc. A discrimination means 16 synthesizes plural fatigue parameters to discriminate the degree of fatigue of the worker. A warning means 17 displays a prescribed message on the display device 3 in accordance with the discrimination result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for monitoring the degree of fatigue of an operator who performs an input operation on a computer. More specifically, the present invention relates to a computer-equipped fatigue monitoring device constructed as software by a program resident in the computer body.

[0002]

2. Description of the Related Art A computer generally has a CP
It is provided with a main body unit containing a U and a memory, an output terminal such as a display, and an input terminal including an input tool such as a keyboard and a mouse. An operator who operates a computer confronts the display and operates an input tool to input desired data and the like. Computer operation requires some skill and concentration, and fatigue accumulates over time. Therefore, there is a tendency to accumulate excessive fatigue in the body without knowing it. This causes physical disorders such as stiff shoulders and tendonitis, and mental disorders such as stress.

As a countermeasure against this, for example, a VDT (video display terminal) usage status monitoring system has been proposed, and is disclosed in, for example, Japanese Patent Application Laid-Open No. 2-123410. This system is built into the computer and prompts the operator to take a break depending on the usage status of the VDT, and forcibly prevents the VDT from being used for a certain period of time if the operator is not obeyed. This system integrates the usage time of a keyboard used as an input tool, estimates the fatigue of the operator based on this, and issues a predetermined warning or the like.

[0004]

However, the conventional fatigue monitoring system merely accumulates the continuous use time of the keyboard and monitors the fatigue level of the operator. With such a simple method, it is not always possible to faithfully monitor the degree of fatigue of the worker, and the conventional monitoring system has often been an obstacle to continuing smooth computer operation. Therefore, an object of the present invention is to provide a fatigue monitoring device with a built-in computer, which is capable of detecting the fatigue level of an operator faithfully, multi-facetedly, and comprehensively.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned problems of the prior art and to achieve the object of the present invention, the following means were taken. That is, the fatigue monitoring device with a built-in computer according to the present invention has a basic configuration that is incorporated in the main body of a computer having a main body, a display, and at least one input tool, and the fatigue of an operator who operates the input tool. Multi-faceted and comprehensive monitoring of degree. The present apparatus having such a configuration is constructed as software as a program resident in the main body of a computer, for example. That is, the fatigue monitoring device with a built-in computer includes a storage means, an analysis means, a determination means, and a warning means. The storage means stores the types and frequencies of the signals input from the input tool in time series according to the operation of the operator. The analysis means analyzes the types and frequencies of the accumulated signals and successively calculates a plurality of different fatigue parameters correlated with the fatigue level of the worker. The judging means judges the fatigue level of the worker by integrating the plurality of fatigue parameters.
The warning means displays a predetermined message on the display according to the result of the judgment.

For example, the analyzing means may include a first fatigue parameter indicating an operation error rate based on the frequency of signals related to input correction, and a second fatigue parameter indicating an operation speed based on the number of signals input per unit time. A fatigue parameter and a third fatigue parameter representing the operation duration time are calculated based on the continuously input signal. At this time, the analyzing means calculates fatigue parameters for each of the main input tool consisting of a keyboard and the auxiliary input tool selected from the mouse, digitizer or trackball. On the other hand, the judging means can individually judge the fatigue level in consideration of the personal information of the worker registered in advance. The judging means can judge the fatigue level of the operator in multiple stages or continuously, and accordingly, the warning means can display different messages depending on the fatigue level. Further, the judging means can change the fatigue level in the recovery direction in response to the interruption of the input operation.

[0007]

According to the present invention, while the operator is continuously operating the computer by using the input tool such as the keyboard and the mouse, the type and frequency of the key input are converted into a time-series data. accumulate. Based on this, arithmetic processing is sequentially performed on computer software to obtain a plurality of different fatigue parameters representing the operation error rate, the operation speed, the operation duration time, and the like. By comprehensively judging these plural parameters, the degree of fatigue of the operator operating the keyboard or mouse is estimated. Further, a message indicating the degree of fatigue is warned to the operator by characters, figures, or voice on the computer display. This allows the worker to independently determine whether to take a break. As a result, it is possible to prevent various obstacles caused by fatigue of keyboard operation and mouse operation.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic block diagram showing an outline of a computer-equipped fatigue monitoring device according to the present invention. This apparatus is incorporated as a resident program in the main body 1 of a computer including a computer main body 1, at least one type of input tool such as a keyboard 2, and a display 3. In other words, the computer-equipped fatigue monitoring device is constructed as software. The computer main body 1 has a central processing unit (CP
U) 11, memory 12, I / O port 13 and the like. The keyboard 2 is connected to the computer main body 1 and inputs desired data. The display 3 is connected to the computer main body 1 as an output terminal and displays a processing result of input data and the like. Also, the keyboard 4 and the mouse 4 are used together as an input tool. Alternatively, a digitizer (pen input device), a trackball, or the like may be used instead of the mouse 4 in some cases.

The CPU 11 interprets an instruction and controls its execution. The memory 12 stores programs and data. The software for constructing the computer-equipped fatigue monitoring apparatus according to the present invention is stored in the memory 12 and is operated by a command from the input tool of the computer. The I / O port 13 is a part that controls the input / output of data, and serves as a data inlet / outlet when the computer communicates data with the outside. The memory 12 is called a main storage device and is a part that stores computer programs and data, and is distinguished from a large-capacity auxiliary storage device that is externally connected.

As described above, this computer built-in fatigue monitoring device is constructed by a predetermined program resident in the computer main body 1, and FIG. 1 functionally represents this as a plurality of means. As shown in the figure, the monitoring device includes a storage unit 14, an analysis unit 15, a determination unit 16, and a warning unit 17, which are constructed by software. The storage means 14 accumulates the types and frequencies of the signals input from the input tool according to the operation of the operator in time series. Analysis means 1
Reference numeral 5 analyzes the types and frequencies of the accumulated signals to sequentially calculate a plurality of different fatigue parameters correlated with the fatigue level of the worker. The judging means 16 judges the fatigue level of the worker by integrating a plurality of fatigue parameters. The warning means 17 displays a predetermined message on the display 3 according to the determination result.

The analyzing means 15 includes, for example, a first fatigue parameter indicating an operation error rate based on the frequency of signals related to input correction, and a second fatigue parameter indicating an operation speed based on the number of signals input per unit time. A third parameter that represents the operation duration based on the parameter and the signal that is continuously input.
And the fatigue parameter. Furthermore, this analysis means 15
Calculates a fatigue parameter for each of the main input tool consisting of the keyboard 2 and the auxiliary input tool selected from the mouse 4, the digitizer or the trackball. In some cases,
The judging means 16 can individually judge the fatigue level in consideration of the personal information of the worker registered in advance. The judging means 16 further judges the fatigue level of the worker in multiple stages or continuously. In response to this, the warning means 17 displays a different message on the display 3 depending on each level of fatigue. Further, the judging means 16 can change the present stage of the fatigue level to the recovery direction in response to the interruption of the input operation.

The specific configuration and operation of the fatigue monitoring device with a built-in computer will be described in detail below with reference to FIGS. When inputting data to a computer, an operator often uses the keyboard 2 as an input tool. In this case, key input is performed by pressing down the keyboard key with a finger. The key layout is, for example, a QWERTY layout (JIS standard) as shown in FIG. Here, consider the case where a Japanese word processor is used and a new document is input by the Roman character input method. In this case, for example, when trying to input the character "fatigue", in the ATOK system which is a typical preprocessing software system (FEP), enter "HIROU" and the Roman characters, and then press the space bar. It is usual to perform kanji conversion called "fatigue". Here, consider the case where the key operation is wrong.
For example, when a key operation is mistakenly input as "HIROW", the input must be redone when the operator notices. For example, if you noticed before the Kanji conversion, the word processor input screen should have "Hiro W", so erase the last character "W" with the backspace key (BS) 21 and restart. The input is redone by pressing the "U" key, the display is changed to "Hirou", and then the space bar 24, which is the conversion key, is pressed to execute the kanji conversion.

Another correction method is to operate the arrow key 26 at the stage of "Hiro W" to return the input position to the previous position. Then delete key (DEL) 22
Operate to delete the wrongly input "W", and press the "U" key again to re-input.
After changing the display to "Hirou", press the space bar 24
By pressing down, it is converted into the character "fatigue".

In an even rarer case, there is also a method of invalidating all the characters of "HIROW" entered by pressing down the ESC key 25, and reentering "HIROU" in Roman characters. However, in many cases, the correction method using the BS key 21 or the DEL key 22 is executed. In addition to the above-mentioned sequential correction, when there is a sentence that was input in batch at the beginning and you want to edit and use it, or when you continue key input regardless of a key operation mistake and make corrections collectively afterwards, etc. Can also be considered. In this embodiment,
For the sake of brief explanation, the case of new input successive correction is targeted.

When the fatigue of the operator who operates the computer gradually accumulates, the above-mentioned key operation error tends to occur frequently. FIG. 3 shows a case where a standard worker makes continuous word processing input (transcription of newspaper articles) using word processing practice software, and after 10 minutes, 30
The result of the operation error rate examined after 1 minute and 1 minute is shown. After 10 minutes, the operation error rate was 0%, but
It can be seen that 5% after 1 minute and 15% after 1 hour, fatigue increased and operation mistakes increased, and re-keying related to input correction occurred frequently. Therefore, BS key and DEL
By monitoring the number of times the key is hit, the degree of fatigue of the operator who is currently operating the computer can be objectively known.

On the other hand, as a method of monitoring the degree of fatigue of an operator who is operating a computer, it is conceivable to use the operation speed of key input as a parameter. For example, FIG. 4 shows the test results of a worker selected as a model. These are the results of the tests performed 10 minutes, 30 minutes, and 1 hour after continuous word processing input (transcription of newspaper articles). In this test,
If the number of characters that can be entered is 80% or more (Romaji input / Kanji conversion) with an accuracy of 98% or more per minute, the result is considered as a pass. This test was performed three times 10 minutes after starting the word processing input work, and all the tests were successful. But,
After 30 minutes, the test was repeated three times, and the test could be passed only once. After 1 hour, none of the three tests passed. That is, it indicates that the operation speed of the key input decreases with the lapse of the work duration, and the worker is tired. In this way, it is possible to monitor the degree of fatigue of the worker by the operation speed (pace) of key input.

On the other hand, recently, a graphic user interface (GUI) is widely used. While displaying symbols, designs, characters, etc. on the display screen, the cursor displayed on the screen is also scanned using a mouse, digitizer, trackball, etc., and the above-mentioned symbols, designs,
Characters are moved and determined. In this case, to express the degree of fatigue of the operator who operates the input tool such as a mouse,
For example, the operation duration of these input tools may be monitored. Of course, by monitoring the operation duration of the keyboard as well, one aspect of the degree of fatigue of the operator can be grasped.

The fatigue parameters such as the operation error rate, the operation speed, and the operation duration described above will be concretely parameterized by mathematical expressions. First, a description will be given of the first fatigue parameter representing the operation error rate.
The number of key inputs operated in the unit time td from the time t0 is represented by NKEY (t0), and the number of BS key inputs operated in the unit time td from the time t0 is NBS (t.
0), and the number of times the DEL key is operated within the unit time td from time t0 is represented by NDEL (t0). By storing these input counts in the memory of the computer for each key type, it is possible to calculate the fatigue level of the operator based on these.

For example, as one measure showing the degree of fatigue,
The ratio of the number of operations of the BS key and the DEL key is calculated with respect to the number of inputs of all keys. The calculation formula is represented by the following formula 1.

[Equation 1] The tendency of the operation error rate can be expressed by Er (t0) in the above formula 1. The td can be set arbitrarily such as 1 minute or 2 minutes. Looking at this formula 1, the calculation formula is established by dividing the sum of the number of BS key inputs and the number of DEL key inputs by the total number of key inputs. E
When r is close to 0, it means that the BS key and the DEL key are hardly used, and the fatigue level is low. This value Er
It can be said that the larger the is, the greater the fatigue level. Of course, this varies from person to person, and if the worker changes, this number also changes.

Therefore, in order to objectively calculate the fatigue level,
It is necessary to calculate the operation error rate in a state where the operator does not usually feel fatigue. For example, when the worker is not tired, a key input test is performed within a certain period of time, and the following formula 2 is calculated based on the result.

[Equation 2] This value Er (ORG) can be called a normal operation error rate. Using this value and the operation error rate Er (t0) at the arbitrary time t0 to td described above, the following mathematical formula 3
As a result, the first fatigue parameter er (t0) representing the dimensionless operation error rate is obtained.

(Equation 3) If er (t0) = 1, it means that the worker is in a normal state, and if er (t0)> 1, then there are more operation mistakes than usual and fatigued. You can say that.

Next, the second fatigue parameter representing the operation speed will be described. In this case, the following formula 4 can be considered. That is, the operating speed (the number of inputs per unit time) when not normally fatigued NKEY (O
RG) and operation speed NKEY (t0) at any time
Using, the input speed ratio et (t0) is defined as in Equation 4 below. That is, this et (t0) becomes the second fatigue parameter.

[Equation 4] NKEY (ORG) is the number of key inputs by a certain worker in a unit time in a state where he or she normally does not feel fatigue.
KEY (t0) is the total number of inputs within a unit time at a given time t0. Looking at this, et (t0)
When = 1, you can see that you are not feeling tired, and et
If (t0)> 1, it can be considered that the input speed is lower than usual and fatigue is accumulated.

However, in the key operation, regardless of fatigue, there is a possibility that the key operation is temporarily interrupted and the entered text or numerical value is confirmed, or the user temporarily leaves the keyboard. Therefore, the fatigue parameter defined by the above equation 4 may not be appropriate, and a numerical value corrected as follows may be used as the second fatigue parameter et (t0). In this modification, it is necessary to calculate the average key operation time interval of the worker. Usually, under non-fatigue conditions, key operations are performed to determine the average time interval between key presses. For example, this average time interval t
k is expressed by Equation 5 below.

(Equation 5) T (ORG) is the measurement time, and NKEY (ORG) is the number of key operations measured during that time. Based on this average key operation time interval tk, for example, it is multiplied by a constant coefficient K to define the following judgment formula 6. t ≦ K · tk (6) Only when this judgment formula 6 is satisfied, the calculation by the formula 4 is continued. A numerical value is given to this K such that it is 1.3 or 1.5, or a time slightly longer than the average key input time interval tk. By doing so, it is considered that the key operation is interrupted and the time is counted when it is sufficiently shorter than the time when it is determined that a break has been entered. On the other hand, t> K
When it becomes tk, it is judged that the worker has entered the rest time period, the calculation of the formula 4 is stopped, and the et at that time is stopped.
(T0) is stored in the memory of the computer.

In this way, the key operation is counted when the key operation time interval satisfies the above judgment formula 6, and the latest average key operation time interval at the time t0 when the key operation is performed is as follows. It is calculated by Equation 7.

(Equation 6) In the above mathematical expression 7, the numerator term represents the total time of all the key operations for a series of (continuous) key operations that satisfy t ≦ K · tk. NKEY (t0) is defined by substituting a value obtained by a series of key operations just before the time to be checked. With respect to the key operation average time interval tk (t0) obtained in this way, the key operation average time interval tk in a state where fatigue is not normally felt
The present fatigue level can be monitored by calculating the ratio to (ORG). That is, the second fatigue parameter et represented by the following equation 8
(T0) can be substituted for the second fatigue parameter defined by Equation 4 above.

(Equation 7) From Equation 8, if et (t0)> 1, it can be said that the key operation time interval is longer than usual and the degree of fatigue is increasing. Here, regarding the method of calculating the numerator term of Expression 8, when the same key is operated continuously, high-speed operation is possible regardless of fatigue. Therefore, for the total time represented by Expression 7, it is necessary to devise such a method that the operated key is not operated before and after the operated key, but the different keys are sampled.

Next, the third fatigue parameter representing the operation duration time will be described. In the case of character input, even if the character input speed does not change when fatigue is advanced, there is a possibility that fatigue is potentially accumulated. In consideration of this, the degree of fatigue can be monitored also by the degree of the continuous time required for character input. First, the following Expression 9 is defined. Tk = Σt (t ≦ K · tk) (9) Next, using Expression 9, the following Expression 10 is defined as a function representing the degree of fatigue caused by continuous key operation.

(Equation 8) In the above formula 10, p is a constant such that p> 1. The third fatigue parameter ek expressed by the equation 10
(T0) gradually approaches the predetermined value p from 1 over time. Therefore, the fatigue parameter depends on the operation duration, and this value ek (t0) becomes saturated with the lapse of time.

Further, let us consider another case where a mouse is used to perform input work on a computer. At this time, the work is considered to continue while the mouse is moving, and the degree of fatigue is calculated. Also in this case, if there is no input from the keyboard and movement of the mouse for a certain period, it can be considered that the worker has entered the break period during that period. Assuming that tm is a reference period of time that can be regarded as such a break, the operation time of a certain series of mouse is expressed by the following formula 11. Tm = Σti (ti <tm) (11) ti is the time during which the mouse moves intermittently, the time from stationary to stationary, or the time from stationary to clicking the mouse button, or from clicking the mouse button. It represents the time until the next mouse button click.

Here, assuming that the fatigue level of the worker is simply proportional to the time the mouse is moving, the time t
The fatigue level at 0 is represented by the following mathematical formula 1 with q as a constant.
Represented by 2.

[Equation 9] This value em (t0) is the fourth fatigue parameter representing the degree of fatigue related to the operation duration of the mouse.

The first to fourth fatigue parameters er (t0), et (t) thus obtained are obtained.
0), ek (t0), and em (t0) can be used to define the following calculation formula 13 representing the overall fatigue level. Kf (t0) = α · er (t0) + β · et (t0) +
γ · ek (t0) + δ · em (t0) (13) (α, β, γ, δ ≧ 0) In the above calculation formula 13, the coefficient α is the input of the BS key and the DEL key when evaluating the fatigue level. The ratio of the first fatigue parameter er (t0) obtained based on the number of times is reflected in the calculation formula 13. The coefficient β determines how much the second fatigue parameter et (t0) related to the operation speed should be reflected in the calculation formula 13. Similarly, the coefficient γ is the third fatigue parameter ek (t
0) represents the degree of contribution to the above calculation formula 13, and δ is the fourth fatigue parameter em (t0) when it is considered that the fatigue level of the operator when operating the mouse is proportional to the time during which the mouse is moving. Represents the degree of contribution to the above calculation formula 13. These coefficients α, β, γ, δ have positive values.

With respect to the total fatigue degree Kf (t0) at time t0 thus obtained, for example, K is used as a threshold value.
Numerical values 0, K1, K2, K3 (K0 ≦ K1 ≦ K2 ≦ K3) are defined. When K0 ≦ Kf ≦ K1, the message M1 “Why not eat tea?” Is displayed on the display. When K1≤Kf≤K2, the message M2 "Refresh and do it." Is displayed on the display. Further, when the degree of fatigue progresses and K2 ≦ Kf ≦ K3, a message M3 “A break is required. Please take a rest.” Is displayed on the display as a warning. When the degree of fatigue further progresses and K3 ≦ Kf, a message M4 “It looks like you are tired. You need a good break. Please take a rest.” Is displayed on the display as a warning. In this way, the warning message can be transmitted to the operator who is operating the computer. Alternatively, this may be expressed by voice using voice synthesis software. Further, it may be expressed as a change in a figure or a change in color that continuously appears on the display.

Now, consider a case where the worker who sees such a warning message enters the next break time. When there is no input from the keyboard or a signal from the mouse for a certain period of time, it can be considered that the worker is taking a break. In such a case, the resting time Tr is measured, and the recovery times T1, T2, T3, T4 are set in multiple stages in response to the messages M1, M2, M3, M4 immediately before that.
Is defined. When these recovery times have elapsed, it is determined that the operator's fatigue has recovered, and the value of Kf (t0) is reset to zero. When it is less than T1, T2, T3 and T4, it is judged that the fatigue is linearly recovered by using the rest time Tr, and Kf is rewritten by the complementary calculation as follows.

[Equation 10] However, when Kf (t1) ≦ 0, Kf (t1)
= 0. By manipulating the numerical values in this way, it is possible to judge the working state and the resting state in multiple stages, and to faithfully monitor the fatigue level of the worker.

The above-described series of steps can be incorporated in computer software and displayed on the display so as not to interfere with normal input operations. For example, as resident software, a computer can perform a normal input operation while the operator monitors the fatigue level without the operator being substantially aware of the existence of the fatigue monitoring program. FIG. 5 schematically shows this example. The display 3 has a message area 32 in addition to the work screen 31.
Is provided. The message displayed in the message area 32 may be the one described above,
Alternatively, it may be displayed as a color or a graphic.

The fatigue monitoring process described above is summarized in the flow charts of FIGS. 6 and 7. The flowchart of FIG. 6 shows a preparation procedure for using the fatigue monitoring device with a built-in computer. First, in step R1, a predetermined standard work is tried by using a keyboard and a mouse. Next, in step R2, Er (O
RG) and tk (ORG) are determined. Then step R3
I will actually work at and try the fatigue monitoring device. Then, in step R4, it is determined whether there is a problem such as an inappropriate message. If there is a problem, the coefficients α, β, γ, δ, K0, K1, K2, K3 are calculated in step R5.
Etc. are adjusted.

The flow chart of FIG. 7 shows a flow when the fatigue monitoring device with a built-in computer is operated in an actual use state. First, in step S1, the fatigue monitoring device is activated. Next, in step S2, the work by the computer is started. In step S3, it is determined whether or not the work by the computer is completed. Step S if working
Then, the process proceeds to step 4 and Kf (t0) is calculated. Then step S
In step 5, the overall fatigue degree Kf (t0) is evaluated and judged in multiple stages. In step S6, an appropriate message Mi is displayed based on this evaluation judgment.

Finally, an example will be described in which a message to an operator is expressed as a change in a connected figure or a change in color. In this case, for example, the fatigue indicator 32a is displayed on the screen 31 as shown in FIG.
The value is continuously changed as the value of Kf (t0) defined by 3 increases. In the figure, this shape is displayed such that it gradually increases according to the value of Kf (t0). The operator can determine whether to take a break based on the information provided from this figure. In this case, the above calculation formula 14 is replaced with the following calculation formula 14a.

[Equation 11] Note that Tx is continuously given as a function of Kf in the time required for recovery at that time. In this case, in step R5 of FIG. 6, only α, β, γ, δ, and K0 are adjusted, and in FIG. 7, step S5 is omitted.

[0034]

As described above, according to the present invention, the operator's fatigue level is monitored by the number of times the BS key or DEL key is depressed, the average key operation time interval, the time during which the mouse is moving, and the like. Calculate by Appropriate advice is successively given by comprehensively judging the results and feeding them back to the workers. As a result, it is possible to prevent excessive computer input work and give the operator an opportunity to recover from fatigue. Therefore, it is possible to take measures against various diseases caused by fatigue, which is industrially beneficial.

[Brief description of drawings]

FIG. 1 is a block diagram showing the basic configuration of a computer-equipped fatigue monitoring device according to the present invention.

FIG. 2 is a plan view showing an example of a keyboard.

FIG. 3 is a graph showing an operation error rate in keyboard input.

FIG. 4 is a graph showing dependency of operating speed of a keyboard on elapsed time.

FIG. 5 is a plan view showing an example of a display connected to a computer.

FIG. 6 is a flowchart showing a preparatory procedure for using the fatigue monitoring device with a built-in computer.

FIG. 7 is a flowchart showing an operation procedure of the fatigue monitoring device with a built-in computer according to the present invention.

FIG. 8 is a plan view showing another example of the display connected to the computer.

[Explanation of symbols]

 1 Computer Main Body 2 Keyboard 3 Display 4 Mouse 11 CPU 12 Memory 13 I / O Port 14 Storage Means 15 Analysis Means 16 Judgment Means 17 Warning Means

Claims (7)

[Claims] 1. A fatigue monitoring device with a built-in computer, which is incorporated in a main body of a computer having a main body, a display, and at least one input tool, and monitors the degree of fatigue of an operator who operates the input tool. Storage means for time-sequentially accumulating the type and frequency of the signal input from the input tool according to the operation of the operator, and analyzing the type and frequency of the accumulated signal were correlated with the fatigue level of the operator. An analysis unit that sequentially calculates a plurality of different fatigue parameters, a determination unit that collectively determines the fatigue level of the worker, and a predetermined message is displayed on the display according to the result of the determination. A fatigue monitoring device with a built-in computer, which comprises a warning means. 2. The first analyzing unit displays the operation error rate based on the frequency of signals related to the input correction, and the second analyzing unit displays the operation speed based on the number of signals input per unit time. 2. The computer built-in fatigue monitoring device according to claim 1, wherein the fatigue parameter and a third fatigue parameter indicating an operation duration time are calculated based on a continuously input signal. 3. The computer according to claim 1, wherein the analysis means calculates a fatigue parameter for each of the main input tool composed of a keyboard and the auxiliary input tool selected from a mouse, a digitizer, a trackball or the like. Built-in fatigue monitoring device. 4. The computer-equipped fatigue monitoring device according to claim 1, wherein the determination means determines the degree of fatigue in consideration of personal information of a worker registered in advance. 5. The method according to claim 1, wherein the judging means judges the fatigue level of the worker in multiple stages, and the warning means displays a different message depending on each stage of the fatigue level. Computer built-in fatigue monitoring device. 6. The judgment means judges the fatigue level of the worker in the form of a continuous function, and the warning means displays a message by continuously changing the figure, figure or color according to the fatigue level. The fatigue monitoring device with a built-in computer according to claim 1, characterized in that. 7. The computer built-in fatigue monitoring device according to claim 5, wherein the determination unit changes the fatigue level in a recovery direction in response to interruption of the input operation.