JP2014106375A - Danger sensibility improvement system for human error prevention - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a danger sensibility improvement system for human error prevention using a phenomenon called change blindness known for the field of perceptual psychology.SOLUTION: A danger sensibility improvement system for human error prevention includes a display device 2 which displays stimulus using change blindness as a task for a subject to take, an input device 3 into which the subject inputs a reaction to the stimulus, and a central processing unit 1a which controls the display device 2 and the input device 3.

Description

  The present invention relates to a risk sensitivity improvement system for human error prevention, and more particularly to a risk sensitivity improvement system using change blindness.

Risk sensitivity is sensitivity to danger. That is, it can be said that it is an ability (skill) to detect a danger source in a situation where the person is placed.
Various training methods have been proposed and implemented to increase risk sensitivity. For example, KYT (Danger Prediction Training) is a typical risk sensitivity training method, and is used in various occupations and fields such as factories and nursing. In any method proposed or implemented so far, including KYT, it is common to include a process of searching for an object as a danger source from the presented photographs, illustrations, and videos.

The danger sensitivity training method used in the following non-patent document 1 is a method using a plate. Participants in the training (hereinafter referred to as “subjects”) respond to the hazards included in the illustrations and the actions they take in the scene after observing the presented illustrations. This procedure is used for general risk sensitivity training.
The detection of hazard sources required of participants in such general risk sensitivity training is greatly influenced by how much knowledge they have about the situation and scene. This kind of knowledge problem is also important for risk sensitivity. On the other hand, in actual work situations and daily life situations, it is not only possible to overlook dangers due to lack of knowledge, but also due to the limitations of human general attention. The oversight is also an important issue.

  In the conventional risk sensitivity training, there is almost no educational effect for overlooking danger due to such a limit of attention.

“Research on Risk Sensitivity (tentative name) Test (I)”, Nobuyuki Fukasawa, Japan Journal of Applied Psychology 1983, No. 8, pp. 1-12

Considering effective risk sensitivity training, it is necessary to create a stimulus that is not so difficult to detect and that causes an oversight despite the importance of the detection target. However, photographs, illustrations, and images currently used in many danger sensitivity trainings are not stimuli having the above-described features.
In view of the above situation, an object of the present invention is to provide a risk sensitivity improvement system for preventing human error by utilizing a phenomenon called change blindness known in the field of perceptual psychology.

In order to achieve the above object, the present invention provides
[1] In a risk sensitivity improvement system for preventing human error, a display device that displays a stimulus using change blindness as a task to be performed by the subject, and an input device for the subject to input a response to the stimulus And a central processing unit for controlling the display device and the input device.

[2] In the risk sensitivity improvement system for human error prevention described in [1] above, the subject is a picture or a photograph in which a part that is subject to safety is a change blindness stimulus change part. It is characterized by.
[3] The danger sensitivity improving system for preventing human error according to [1] above, further comprising a timer for displaying an image on the display device for a certain period of time.

  [4] In the risk sensitivity improving system for preventing human error according to any one of [1] to [3] above, the display repeat count and click count are fed back to the subject.

  According to the present invention, it is possible to improve risk sensitivity for preventing human error by utilizing a phenomenon called change blindness known in the field of perceptual psychology.

It is a schematic diagram of the danger sensitivity improvement system for human error prevention which shows the Example of this invention. It is a drawing substitute photograph which shows an example of the image for training using the change blindness by this invention. It is a drawing substitute photograph which shows the feedback screen of training using the change blindness of this invention. It is a flowchart of training using change blindness of the present invention.

  A risk sensitivity improving system for human error prevention according to the present invention includes a display device that displays a stimulus using change blindness as a task to be performed by a subject, and an input device that inputs a response to the stimulus by the subject. A central processing unit for controlling the display device and the input device.

Hereinafter, embodiments of the present invention will be described in detail.
In the field of perceptual psychology, a phenomenon known as change blindness is known. Change blindness is when a blank image is inserted between two images that differ in part and presented, or when a video that gradually changes between two images that differ in part is played. The phenomenon is that even if it is repeatedly changed, the change cannot be noticed.

A characteristic of change blindness is that changes cannot be detected even when stimulating images and stimulating images are actively searched for gaze, changes cannot be detected even after repeated viewing, and changes are very large However, there is a point that cannot be noticed.
Moreover, it has been shown that whether or not a change can be detected is influenced by individual differences such as knowledge and experience, context, and the like in addition to characteristics of the stimulus such as complexity of the stimulus.

Therefore, the inventors of the present application have considered using the change blindness stimulus as a stimulus for risk sensitivity training.
Because of the characteristics of the change blindness described above, it is possible to experience that even a large change or a change cannot be detected even by repeated observation, so that an understanding of oversight is deepened.
In addition, it is possible to understand the importance of receiving education by experiencing that changes can be detected by acquiring knowledge and experience. From this, it is considered that the educational effect is enhanced as compared with the case of using the stimulus of the conventional risk sensitivity training.

  In the risk sensitivity improvement system using the change blindness of the present invention, pictures and photographs are used as stimuli. In a normal change blindness stimulus, there are various variations in the change location, but in the risk sensitivity improving system of the present invention, a safety-related portion is set as a change blindness stimulus change location. As a result, an oversight related to safety can be experienced, and an educational effect can be obtained.

In addition, the use of stimuli that are difficult to find changes despite large changes and significant changes in safety will increase emotional changes such as surprises when finding changes, and leave an impression. It becomes easy to remain.
To achieve this, in the relationship between the figure on the screen and the ground (when an object appears to float up with another object as the background, the figure is the former object, and the ground is the object that becomes the background. The idea is to change the ground part.

In this system, the number of times the subject points out the wrong place and the number of repetitions until the correct change point is detected are recorded and fed back to the subject. As a result, the difficulty of detection can be fed back to the subject as a numerical value, which increases the educational effect.
Change blindness is used as a material for studying the limits of human attention, but there is no example of applying this as a tool for improving risk sensitivity. Such use is useful for society in terms of safety, and the device devised for applied use has creativity.

Hereinafter, the present invention will be described with specific examples.
FIG. 1 is a schematic diagram of a risk sensitivity improving system for preventing human error according to an embodiment of the present invention.
In this figure, the risk sensitivity improving system includes a PC (personal computer) 1, a display device (display) 2, and a mouse 3 as an input device that also functions as a pointing device.

  In addition, the PC (personal computer) 1 includes a central processing unit (CPU) 1a that performs various calculations and controls, a storage device 1b that stores information necessary for execution of tasks to be described later and information input by the subject, and time. A timer 1c for measuring is provided. The timer 1c can measure time in units of 1 ms. The display device (display) 2 may include a touch panel. In that case, when the subject touches the screen, the position can be detected. 1d is an interface connected to the display device (display) 2, and 1e is an interface connected to the mouse 3.

FIG. 2 is a drawing substitute photograph showing an example of a training image using change blindness according to the present invention, FIG. 3 is a drawing substitute photograph showing a feedback screen for training using change blindness, and FIG. 4 is a flowchart of the training. is there.
In FIG. 2, FIG. 2A is an image 1, FIG. 2B is a blind 1, FIG. 2C is an image 2, and FIG. 2D is a blind 2.

An operation flowchart of the risk sensitivity improvement system using change blindness will be described.
In FIG. 4, when training is started (step S1), image 1, blind 1, image 2, and blind 2 are sequentially displayed at regular time intervals (step S2). Next, when the subject inputs what has changed between image 1 and image 2 (step S3), it is determined whether or not the answer is correct (step S4). If the answer is correct (YES in step S4). 3), a feedback screen as shown in FIG. 3 is displayed as a training result (step S5). If the answer is not correct (NO in step S4), the process returns to step S2. In step S3, if the subject does not click, the image presentation is repeated as it is without input.

Here, the “number of repetitions” shown in FIG. 3 represents the number of times that the subject repeats steps S2 to S3 before reaching the correct answer, and the “number of clicks” also represents the number of times the image was clicked before reaching the correct answer. . Naturally, the smaller the number of times, the better the subject's performance.
In step S2, the image and the blind are sequentially displayed on the display device (display) 2 at regular time intervals set by the timer 1c. The image 1 and the image 2 are partly different, and the subject is required to search for a different place between the image 1 and the image 2 before and after the blind 1 and the blind 2 and click with the mouse 4.

  For example, in the example shown in FIG. 2, the images 1 and 2 are images of the station platform, and the image 2 is different from the image 1 in that the passenger stands closer to the end on the near side of the home. . If this change can be recognized, the test subject could acquire the danger sensitivity that he / she was caught in the vehicle where the passenger entered, and that there was a risk of a contact accident, and could not be recognized. In some cases, the understanding of oversight is deepened and the educational effect increases.

  In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

  The risk sensitivity improvement system for human error prevention according to the present invention uses a phenomenon known as change blindness known in the field of perceptual psychology, and is capable of improving risk sensitivity for human error prevention. It can be used as a sensitivity improvement system.

1 PC (personal computer)
1a Central processing unit (CPU)
1b storage device 1c timer 1d, 1e interface 2 display device (display)
3 Mouse (input device)

Claims (4)

  A display device that displays stimuli using change blindness as tasks to be performed by the test subject, an input device that allows the test subject to input a response to the stimulus, a central processing unit that controls the display device and the input device, A risk sensitivity improving system for preventing human error, characterized by comprising:   The risk sensitivity improvement system for preventing human error according to claim 1, wherein the subject to be implemented by the subject is a picture or a photograph in which a change-related part of the change blindness stimulus is a part that is safely involved. Danger sensitivity improvement system for human error prevention.   2. The danger sensitivity improving system for preventing human error according to claim 1, further comprising a timer for displaying an image on the display device for a predetermined time.   The risk for improving human error prevention according to any one of claims 1 to 3, wherein the number of repetitions of the display and the number of clicks are fed back to the subject. Sensitivity improvement system.