JPS60198131A - Work fatique degree measuring apparatus in computer terminaldisplay apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for measuring the fatigue level of work in a computer terminal (VDT).

In general, to measure the degree of work fatigue, a 7-Ritsuker value measuring device is used to measure fatigue mainly in the visual system.

In other words, the light source, which is controlled under certain environmental conditions of the Ritzker value measuring device, is made to blink and appear to the subject to flicker, and the flickering caused by the blinking is gradually reduced to a faster rate. The idea is to use an appropriate method to signal the point at which the flickering of the light source fuses or dissociates by slowing down a little, and then measure the degree of fatigue based on the flicker frequency (flicker value) at that time. be.

Figures 1 and 2 show a conventional 7Ritzker value measuring device.

As shown in FIG. 1 (longitudinal cross-sectional view), a light source 2 is provided within the main body 1, and a motor 3 within the main body 1 has a notch as shown in FIG. 2 (front view). A vane plate 4 is attached as a shutter.

The motor 3 receives voltage from a power source 5 regulated by a variable resistor 6, and the control knob 6a connected to the variable resistor 6 is moved in the direction a from the state shown by the solid line in FIG. By turning it (counterclockwise), the vane-shaped plate 4 gradually transitions from a stationary state to a high-speed rotation state. At this time, the subject (VDT)
When the operator) is looking at light source 2, the subject sees light source 2.
appears to be blinking, and as the number of rotations of motor 3 increases, the blinking appears to gradually become faster.

And, generally, the flickering of the light source 2 or 2(1 to 3 (i
When the temperature reaches about I-h, the flickering of light source 2 begins to disappear. This state is called fusion, and if the subject presses pushbutton 7 when it is determined that fusion has occurred, the blinking frequency of light source 2 at this time, that is, the 7Ritzker value, will change to 7.
The power is displayed on the value display device 8.

On the other hand, while the motor 3 is rotating at high speed and the light source 2 is being observed in fusion, the control knob 6a is moved in the direction 1) (clockwise direction) from the state shown by the broken line in FIG. By rotating the motor 3, the voltage applied to the motor 3 decreases, and the rotational speed of the blade-shaped plate 4 gradually decreases.

Therefore, since the light source 2 starts to appear flickering at a certain point, when the subject judges that the light source 2 starts to appear flickering, that is, when he judges that it has been dissociated, he presses the push button 7. Accordingly, the flicker value of this and Hiiragi is read on the 7-bit power value display device 8.

- Measure the flicker value of the VDT operator before work as described above, and compare this value with the flicker value measured during or after the work. It is known that the flicker value decreases as fatigue accumulates, so the degree of fatigue of the VDT operator can be measured by the degree of decrease in the flicker value.

In addition, in the reference background illumination device in FIG. 1, reference numeral 10 indicates a dark box.

However, with such work fatigue level measuring means, in order to measure the fatigue level, the DT worker interrupts work and measures the force value display device 8 in a state different from the working state. In addition, there is a problem in that an expensive dedicated measurement device (flicker value measurement device) for measuring the degree of work fatigue is required.

The present invention aims to solve these problems, and allows the user to measure the degree of work fatigue using a computer terminal display device without using an expensive measuring device dedicated to measuring the degree of work fatigue. It is an object of the present invention to provide a work fatigue degree measuring device for a computer terminal display device.

For this reason, the work fatigue level measuring device for a computer terminal display device of the present invention is provided with a screen display point) that periodically blinks and controls the display of the screen in the computer terminal display device, and the same screen display blinking means. A blinking cycle adjustment means is provided to automatically increase/decrease the blinking cycle of the screen display sequentially.
The present invention is characterized in that a flicker value display means is provided which can display a flicker value based on the signal received from the blinking cycle adjustment means.

Hereinafter, embodiments of the present invention will be explained with reference to the drawings.
3 and 4 show a work fatigue level measuring device in a computer terminal display device as a first embodiment of the present invention, FIG. 3 is a block diagram schematically showing its configuration, and FIG. 4 is its control. 5 is a flowchart showing the procedure, and FIG. 5 is a block diagram schematically showing the configuration of a work fatigue level measuring device in a computer terminal display device as a second embodiment of the present invention.

As shown in FIG. 3, in the first embodiment of the present invention, a C
PLJII, memory 12, ■10 units 13゜1
3, a computer terminal device comprising a controller 14, a memory 15, a keyboard 16 for input, a CRT 17 which also serves as a 7-value display means M3 and a computer terminal display device. (\7DT) 19 is provided, and the computer main body 18 and computer terminal device 19 are connected.

Since the first embodiment of the present invention is configured as described above, the CRTl 7 is normally connected to the computer main body 18.
However, when measuring work fatigue level, it functions as a work fatigue level measuring device by operating the software (program) installed in CPLJll.

The following explanation will be given in accordance with the flowchart of FIG. 4. First, a time counter of +1 (l m5ec (=10 Hz)) is set (step S1).

Next, a loop counter for repeating the flashing of the CRT+7 screen three times is set (step S2), and in the ON operation, the CRT17 screen is combined.
Light is emitted for a predetermined time within the period of the time counter set in step S1 (step S3).

Next, as an OFF operation, all the displays on the screen of the CRTi 7 are erased (step S4).

This step S3. By repeating S4, CRi”]
7 flashes, and if the subject determines that the flickering has merged, the subject presses a specific key on the keyboard 16. Here, it is determined whether there is any input from the keyboard 16 (step S5), and if YES, step S1'01, if NO, the process of step S6 is performed.

In this judgment, if the input is No, step S
1 is added to the loop counter set in step 2, and if the loop counter is not 0, the process returns to step S3.
Returning to step S3, an on operation (step S3) and an off operation (step 84) are performed.

That is, the blinking of the CRT 17 is repeated three times at the same blinking cycle.

In steps 83 to S7 described above, the display on the CRT 17 is controlled to blink periodically.

After repeating the blinking three times, when the loop counter reaches 0, the process moves from step S7 to step S8.
1 is recorded from the time counter, that is, the emission period is short X, and the period is 1 +', 1 m5ec (=
1 f'l l'IHz) (step S9). If N (-), the process returns to step S2, and the CRT 17 is blinked at a shorter light emission period.

Time counter bow Om5ec (= 1 ('l OH
z), return to step S1 and start the time counter again] 01) +osec (= 10 Hz)
is set and the blinking operation is performed again.

That is, in step S5, if there is no input from the keyboard 16, steps 81 to S! The process of J is repeated.

- Step 88. In S9, the blinking period of the screen display is automatically decreased in sequence.

Now, in step S5, if there is an input from the keyboard 16 by the subject, 7 Flickers determined from the value of the time counter at that time.
A value (1) is displayed (step 510).

This makes it possible to read the Ritzker value at the fusion point of the subject's CRT screen blinking.

Next, a time counter to measure the flicker value in the dissociation of screen blinking was set to 10 m5ec (= 100
) h) (step 511), and then, similarly to step S2, a loop counter is set to repeat the flashing of the CRT]7 screen three times (step 512).
).

Then, step S3. Similar to S4, step S
CRT17 according to the time counter set in ll.
The screen is made to blink (step s13゜5).
14).

If the subject determines that the blinking on the screen of the CRT 17 has ceased, the subject presses a specific key on the keyboard 16, and the input is determined in step 81.5.

If there is no input, 1 is subtracted from the loop counter as in step S6 (step 816), and the blinking is repeated three times at the same blinking cycle.

In steps 313 to S17, the display on the screen of the CRT 7 is controlled to flicker periodically, similar to steps 83 to S7 described above.

If the loop counter is determined to be C) in step S17, 1 is added to the time counter (step 818).

That is, the blinking period is lengthened, and the period is ]l'l
If it is not O+n5ec (= 10 Hz), the process returns from step S19 to step 812, and blinking is performed three times in this cycle.If it is determined that it is 1110+osec, the process returns to step 31.1 and the process returns to step 812, where the cycle is repeated at 10 (lHz). It will be done.

In this way, step S18. Go to S19 and automatically change to C.
The blinking cycle of the screen of RTl7 is gradually lengthened.

That is, step S]8. In S19, the blinking period of the screen display is automatically increased and adjusted in sequence.

On the other hand, in step S]5, the subject's keyboard 16
If it is determined that there has been an input, step S2 ('
1, the flicker caused by the time counter (
Flicker) value (2) is displayed.

This makes it possible to read the 7 Ritzker values at the dissociation point of the subject's screen blinking.

In this way, the respective flicker values of the fusion point when the blinking period of the screen of the CRT 17 becomes gradually faster and the dissociation point when it becomes gradually slower are automatically measured and read.

If measurement is to be performed again, the process must return to the starting point (step S1) in step S21.

Also, once the measurement is finished, you can move on to executing another program, leaving the subject in the same state.
This is because T work can be started.

Note that the initial or final frequency of blinking, the number of blinks at the same frequency, etc. can be arbitrarily and easily changed by modifying the program.

FIG. 5 shows a second embodiment of the present invention.

Its configuration is almost the same as that of the first embodiment, but an oscillator 20 is provided in the computer terminal device (VDTL 19), and a frequency signal r
Accordingly, the CRT 1 which also serves as a 7-liter value display means M3 and a computer terminal display device. will be flashed automatically.

That is, this oscillator 20 functions as screen display blinking means M1.

On the other hand, the frequency of the oscillator 20 is controlled by a controller 14, and this controller 14 functions as a blinking period adjusting means M2.

Each of the above means M1. CRTl 7 flashes on M2, the flashing cycle is automatically adjusted, and the subject
If it is determined that the blinking of the fusion or dissociation occurs, the subject inputs a signal from the keyboard 16. The input signal activates the cpuli, and based on the control signal of the oscillator 20 from the controller 14, a 7-picker value is determined, and the value is displayed on, for example, the CRT17.

In this way, also in the second embodiment of the present invention, the flicker
The value can be measured, and after the measurement, the subject can perform the \IDT task in the same state.

In addition, as a linker value display means, the display device can be used as appropriate.
It may be provided separately from RTl 7.

As described in detail below, according to the work fatigue level measuring device for a computer terminal display device of the present invention, the computer terminal display device is provided with a screen display blinking means for periodically controlling the display on the screen to blink, A blinking cycle adjustment means is provided which sequentially automatically increases or decreases the blinking cycle of the screen display by the same screen display blinking means, and a blinking cycle adjustment means is provided which sequentially automatically increases or decreases the blinking cycle of the screen display by the screen display blinking means. There is an advantage that the worker's fatigue level can be easily measured while the test subject is in the working state.

In addition, in the work fatigue level measuring device for a computer terminal display device of the present invention, since the work fatigue level measuring device body also serves as a computer terminal display device, there is an advantage that a device dedicated to measuring flicker values as in the past is not required. There is also.

[Brief explanation of the drawing]

Figures 1 and 2 show a conventional 7Ritzker value measuring device. Figure 1 is a vertical cross-sectional view schematically showing it, Figure 2 is a front view of its blade-shaped plate, and Figures 3 and 4 are The figure shows a work fatigue degree measuring device for a computer terminal display device as a first embodiment of the present invention, FIG. 3 is a block diagram schematically showing its configuration, and FIG. 4 is a 711 diagram showing its control procedure.
7-chart, and FIG. 5 is a block diagram schematically showing the configuration of a work fatigue level measuring device in a computer terminal display device as a second embodiment of the present invention. 11,,/'1) I+ 19. , /i11. IQ, i
/("1 unit, 14...controller, 15...memory, 16...keyboard, 17...CRT, 18...
Computer main body, 19... Computer terminal device (V
DT), 20: Oscillator, D: Computer terminal display device, Ml: Screen display blinking means, M2: Blinking cycle adjustment means, M3: Flicker value display means. Agent Patent Attorney Yoshihiko Iinuma Figure 1 Figure 2

Claims (1)

[Claims] A computer terminal display device is provided with a screen display blinking means for periodically controlling the display on the screen to blink, and a blinking cycle adjustment means is provided for automatically increasing or decreasing the blinking cycle of the screen display by the screen display blinking means. In addition, a flicker capable of displaying a flicker value based on a signal received from the blinking cycle adjustment means through an input operation by a subject.
1. A work fatigue level measuring device for a computer terminal display device, characterized in that a value display means is provided.