JPH07295715A - Vdt use condition warning device - Google Patents

Abstract

PURPOSE:To provide the VDT use condition warning device for setting the actual fatigue extent of a worker at the decision reference of fatigue and eliminating limit conditions to the worker at low cost. CONSTITUTION:This device is provided with a key input measuring part 22 for generating actual input number information by measuring an actual key input number and a canceled key input number from an input device, real input number information storage part 24 for storing the actual input number information, reference value input part 26 for previously inputting input number reference value information as the upper limit value of the input number of cancel keys, reference value storage part 28 for storing the input number reference value information, comparative judge part 30 for comparing the real input number information with the input number reference value information, and alarm output part 34 for issuing an alarm when the actual input number information exceeds the input number reference value, and the extent of fatigue at actual work is detected by using the number of cancel keys inputted by the worker, and alarmed to the worker.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VDT usage status warning device for urging a worker to take a break depending on the usage status of a video display terminal (hereinafter referred to as VDT).

[0002]

2. Description of the Related Art FIG. 2 shows, for example, Japanese Patent Laid-Open No. 62-2410.
The conventional VDT usage status warning device disclosed in Japanese Patent No. 17 is shown. This device is a CRT1 that constitutes a VDT.
And a keyboard 2, a reference value storage means 8 for inputting a reference value worthy of issuing an alarm from the keyboard 2 and storing it via the reference value registration means 5, and a timer 3 for inputting key input information.
Key input information converting means 4 for converting the number of keys to be tapped per unit time, the key input status information storing means 6 for storing the output of the key input information converting means 4, the reference value and the key input status information. Comparison judgment means 7 for comparing with
And an alarm device control means 9 for causing the alarm device 10 to sound by the judgment of the comparison and judgment means 7.

In this conventional VDT usage status warning device, the operator of the CRT 1 sets a reference value, which is worthy of issuing an alarm, such as a limit value of one continuous working time and an upper limit value of the number of keystrokes per unit time, from the keyboard 2. input. This reference value is stored in the reference value storage means 8 via the reference value registration means 5.
Memorized in.

When the operator starts input from the keyboard 2, the key input information is input to the key input information converting means 4. The key input information conversion means 4 uses the timer signal from the timer 3 to convert the number of keystrokes per unit time from the start of work. This value is stored in the key input status information storage means 6 as the key input status information.

In parallel with this, the comparison / determination means 7 compares the reference value stored in the reference value storage means 8 with the key input status information stored in the key input status information storage means 6, It is determined whether the time from the start of work exceeds the limit value for one continuous time or the number of keystrokes per unit time exceeds the upper limit value. The alarm device control means 9 causes the alarm device 10 to ring based on the determination by the comparison determination means 7.
In this way, the worker is alerted to take a break.

Further, in FIG. 3, Japanese Unexamined Patent Publication No. 2-166493
The conventional VDT usage status warning device disclosed in Japanese Patent Publication is shown. The present apparatus includes a CRT 1, a keyboard 12 equipped with a detector 11 having a heart rate detection sensor and a body temperature detection sensor, and a heart rate for detecting the heart rate and body temperature of an operator via the heart rate detection sensor and the body temperature detection sensor, respectively. Fatigue degree detection circuit 1 for observing the difference change amount between the heart rate and the initial value of the body temperature and the number detection circuit 13 and the body temperature detection circuit 14.
5 and a color control circuit 16 that changes the display color of the CRT 1 according to the output of the fatigue level detection circuit 15.

In this conventional VDT usage status warning device, the operator of the CRT 1 puts his / her arm on the detector 11 installed in front of the keyboard 12 to perform the work. The heart rate detection circuit 13 and the body temperature detection circuit 14 respectively detect the heart rate and the body temperature of the worker sent from the detector 11 in a constant cycle. The fatigue level detection circuit 15 observes the amount of change in the difference between the heart rate and the body temperature that have been sent over time and the initial values, and when the amount of change becomes 0, the color control circuit 16 determines the point of initial fatigue. Output to. Further, the display color of CTR1 is sequentially changed according to the fatigue degree information from the initial fatigue time to the end of the scheduled work time. In this way, the fatigue level of the worker is minimized by transmitting the fatigue level of the worker and changing the display color.

[0008]

However, as in the above-mentioned conventional example, the amount of keystrokes per unit time and the amount of work such as one continuous working time are simply set as the criterion for fatigue. Cannot cope with unusual changes in physical condition during the work. That is, there is a problem in that the actual fatigue level is not considered as a criterion for judging fatigue.

Further, even if an attempt is made to estimate the actual fatigue of an operator based on changes in heart rate, body temperature, etc., there is a problem in that a device such as a detection sensor for that purpose becomes large and expensive. . Further, there is a problem that the worker has a limitation condition that he / she must keep his / her upper arm above the detection sensor during the work.

The present invention has been made in order to solve the above problems, and its purpose is to set the actual fatigue level of a worker as a criterion for fatigue and at the same time be inexpensive and The present invention provides a VDT usage status warning device that has no restrictions.

[0011]

In order to achieve the above object, the invention according to claim 1 is an actual input information management means for measuring and storing information on the actual input number from an input device, and an input number. It is characterized by further comprising a reference value management means for setting / storing reference value information, and an alarm means for issuing a warning according to a comparison result of the actual input number information and the input number reference value information.

The invention according to claim 2 is the V according to claim 1.
In the DT usage status warning device, the actual input number information is
It is the number of actual cancellation key inputs per fixed time, and the input number reference value information is an upper limit value of the number of cancellation key inputs per fixed time.

The invention according to claim 3 is the V according to claim 1.
In the DT usage status warning device, the actual input number information is
It is a ratio of the number of actual cancellation key inputs to the number of actual key inputs per constant time, and the input number reference value information is an upper limit value of the ratio of the number of cancellation key inputs to the number of key inputs per constant time. To do.

The invention according to claim 4 is the V according to claim 1.
In the DT usage status warning device, the actual input information management means measures the actual input number from the input device and generates actual input number information, and the actual input number information from the key input measuring unit. And an actual input number information storage section for storing.

The invention according to claim 5 is the V according to claim 1.
In the DT usage status warning device, the reference value management means includes a reference value input section for inputting the input number reference value information,
A reference value storage unit that stores the input number reference value information.

The invention according to claim 6 is the V according to claim 1.
In the DT usage status warning device, the warning means warns when the actual input number information exceeds the input number reference value, and a comparison judgment unit that compares the actual input number information with the input number reference value information. And an alarm output unit for emitting the.

The invention according to claim 7 is the V according to claim 2.
In the DT usage status warning device, the cancel key is a backspace key.

The invention according to claim 8 is the V according to claim 2.
In the DT usage status warning device, the cancel key is a delete key.

The invention according to claim 9 is the V according to claim 2.
In the DT usage status warning device, the cancel key is UN
It is characterized by being a DO command.

[0020]

The VDT according to the present invention having the above structure
In the usage status warning device, depending on the skill level of the worker and the difficulty level of the work, the upper limit of the input of the cancel key per fixed time or the upper limit of the ratio of the cancel key to the key input is input from the reference value input section. Value information is input in advance and stored in the reference value storage unit. When the operator starts key input from the input device, the key input measuring unit measures the actual number of key inputs by the operator and the number of actual key inputs per constant time and the ratio of the number of actual cancel key inputs to the actual number of key inputs. The actual input number information of is stored in the actual input number information storage unit. The comparison / determination unit compares the input number reference value information with the actual input number information, and the alarm output unit issues a warning according to the comparison result.

As described above, the number of inputs of the cancel key in the actual work is taken into consideration as the criterion for judging the degree of fatigue, and the operator can be warned when the number exceeds the reference value.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. It should be noted that the same elements as those of the related art are denoted by the same reference numerals and the description thereof will be omitted.

FIG. 1 is a diagram showing an embodiment of a VDT usage status warning device according to the present invention. In this device, a mouse 20 is connected as an input device in addition to the keyboard 2.
Of course, other input means may be used. Note that the click input from the mouse will be described below by including it in the key input.
In addition, this device measures and measures the actual input number information from the input device.
An actual input information management means to be stored, a reference value management means to set and store the input number reference value information, and an alarm for issuing a warning to the input person according to the comparison result of the actual input number information and the input number reference value information. And means. The actual input information management means measures the actual input number from the input device and generates the actual input number information, and the actual input number information storage that stores the actual input number information from the key input measuring unit 22. Part 24,
Have. The reference value management means has a reference value input unit 26 for inputting the input number reference value information and a reference value storage unit 28 for storing the input number reference value information. The reference value input section 26 is
The number-of-inputs reference value information input from the normal keyboard 2 or the like is stored in the reference value storage unit 28. The alarm means inputs the actual input number information, and a comparison / determination unit 30 that compares the actual input number information stored in the actual input number information storage unit 24 with the input number reference value information stored in the reference value storage unit 28. An alarm output unit 34 that issues a warning in response to a command from the comparison and determination unit 30 when the number of reference values is exceeded.

A feature of this embodiment is that fatigue in an actual work is taken into consideration in order to warn the operator, and as a criterion for this fatigue, the cancel key actually input by the operator is used. The number of inputs is used.

The cancel key in this embodiment is a backspace key for deleting an input character, a delete key, a UNDO command for canceling an executed operation, or a function for canceling a normal erroneous input or erroneous operation. Refers to the assigned key. Therefore, the key to which the function is assigned may differ depending on the application,
The cancellation key including them is also used.

The operation of this embodiment will be described below.

A worker who uses a VDT composed of a CRT 1, a keyboard 2 and a mouse 20 must be highly skilled and
Input number reference value information is input in advance from an input device according to the degree of difficulty of work, physical condition, and the like. The input number reference value information is the upper limit value of the input of the cancel key per constant time or the upper limit value of the ratio of the number of the cancel key input to the number of key inputs per constant time. The fixed time in this embodiment is one continuous working time that is continuously performed from the time when the worker starts the work, and the timer 3 counts the working time. The input number reference value information that has been input is stored in the reference value storage unit 28.

When the operator starts input from the input device, the key input measuring unit 22 starts measuring the number of keys actually input (hereinafter referred to as the actual key input number).
In addition, the number of inputs of the cancellation key included in the keys input with the measurement of the key input (hereinafter referred to as the actual number of cancellation key inputs)
Is also measured. Furthermore, the key input measuring unit 22 generates a ratio of the number of actual cancel key inputs to the number of actual key inputs in one continuous working time, and the data for these actual key inputs is used as the actual input number information to store the actual input number information storage unit. It is stored and updated in 24 at any time.

The comparison / determination unit 30 compares the actual input number information stored in the actual input number information storage unit 24 with the input number reference value information stored in the reference value storage unit 28 at any time. Here, it is determined whether the number of actual cancellation key inputs exceeds the upper limit value stored in the reference value storage unit 28. Alternatively, the ratio of the number of actual cancel key inputs to the number of actual key inputs is calculated as
It is determined whether or not the upper limit value stored in 8 is exceeded.
Either of these comparisons may be performed. If the result of comparison is that the value exceeds the upper limit, the alarm output unit 34 is notified of that fact.

The alarm output unit 34 issues a sounding command to the alarm device 10 or the CRT 1 according to a command from the comparison / determination unit 30.
Display a message, etc. on. In this way, according to the present embodiment, it is possible to detect the degree of fatigue of the worker and issue a warning.

As described above, the present invention is characterized in that the degree of fatigue of the VDT operator is estimated by the number of times the cancel key such as the backspace key is used, as shown in the above embodiment. However, since a certain degree of skill is required to operate the keys, it is possible to set a reference value suitable for each individual in order to cope with the individual differences.

In this way, in this embodiment, when the number of times the cancel key is used increases, a warning is issued and the VDT
Workers can be informed of increased fatigue.

[0033]

As described above, according to the present invention, since the information of the actual input number regarding the actual number of times of use of the cancel key during the work is used, the operator can inexpensively operate without using large-scale equipment. It is possible to detect the degree of fatigue in the actual work of. It is possible to prompt a break by issuing a warning to the operator based on this fatigue level.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a VDT usage status warning device according to the present invention.

FIG. 2 is a diagram showing a conventional VDT usage status warning device.

FIG. 3 is a diagram showing a conventional VDT usage status warning device.

[Explanation of symbols]

1 CRT, 2 keyboards, 3 timer, 22 key input measuring unit, 24 actual input number information storage unit, 26 reference value input unit, 28 reference value storage unit, 30 comparison / determination unit, 34
Alarm output section.

Claims (9)

[Claims] 1. An actual input information management means for measuring / storing actual input number information from an input device, a reference value managing means for setting / storing the input number reference value information, the actual input number information and the input number reference. A VDT usage status warning device, comprising: an alarm means for issuing a warning according to the result of comparison with the value information. 2. The VDT usage status warning device according to claim 1, wherein the actual input number information is an actual cancellation key input number per a fixed time, and the input number reference value information is a cancellation key per a fixed time. A VDT usage status warning device characterized by being an upper limit value of the number of inputs. 3. The VDT usage status warning device according to claim 1, wherein the actual input number information is a ratio of the actual cancel key input number to the actual key input number per constant time, and the input number reference value information is A VDT usage status warning device, which is an upper limit value of a ratio of the number of cancel key inputs to the number of key inputs per fixed time. 4. The VDT usage status warning device according to claim 1, wherein the actual input information managing means measures a number of actual inputs from the input device and generates actual input number information; and the key. An actual input number information storage section for storing the actual input number information from the input measuring section, and a VDT usage status warning device. 5. The VDT usage status warning device according to claim 1, wherein the reference value management unit stores a reference value input unit for inputting the input number reference value information, and a reference value for storing the input number reference value information. A VDT usage status warning device comprising: a storage unit. 6. The VDT usage status warning device according to claim 1, wherein the warning unit is a comparison / determination unit that compares the actual input number information with the input number reference value information, and the actual input number information is A VDT usage status warning device, comprising: an alarm output unit for issuing a warning when the input number reference value is exceeded. 7. The VDT usage status warning device according to claim 2, wherein the cancel key is a backspace key. 8. The VDT usage status warning device according to claim 2, wherein the cancel key is a delete key. 9. The VDT usage status warning device according to claim 2, wherein the cancel key is an UNDO command.