Developed through sound judgments on the degree of fatigue tester fatigue – Fati
Now is the time summer in the heat of a long labor, need to pay more strength and energy, but also more tired. If not careful, can easily lead to accidents, but the hot conditions, fatigue is also often the incentive for brain and heart disease. Therefore, the early signs of fatigue was found, it is necessary to take early preventive measures. Air France, Japan Institute of Electronics has developed a fatigue Detector , By detecting the human voice and the brain "energy" to study the fatigue test for the office workers working in the summer provided a security guarantee.
This instrument with a very convenient, when testing the instrument display will show "fatigue", "vitality and strength", "go to bed and wake up time", "work start and end time" and so on, were can be detected by touch screen to answer these questions or input data. Then, again with the microphone equipment say a few words, read a display apparatus shown in short, within a few seconds after the test results will show.
Test results to numerical expression, known as the brain activity Index (CEM). The index developed by the researchers that the order of 500 as the benchmark, plus or minus 100 were considered normal, that is the normal range in between 400-600. In addition, this device also comes with voice system, if the brain does not fatigue, it will inform the subjects were using voice: "You do not have any problem"; If the value is displayed outside the normal range, it will prompt: "Please rest to restore your fatigue "or:" You are in extreme tension, to pay attention. "
Why only through voice can determine what the brain fatigue? If the brain is the normal work of non-fatigue state of mind when dealing with all kinds of information signals cross, will produce a special kind of noise, and this noise on the human body can be manifested in the voice. Application of this principle, Japanese researchers have developed a software that can detect the amount of this murmur of its value. Specific approach is to be detected by the microphone to speak their voice set into a computer, and then by calculating changes in acoustic waveform. Reported that application of this approach will be detected even if the voice disguised look of fatigue, nor will it affect the test values.
According to reports, the previous method of detecting human body fatigue there are many, and some question and answer method, and some method to measure heart rate, as well as the work rate by survey to judge.
However, these methods have drawbacks, not the accuracy is not high, it is the application up too much trouble. And the fatigue tester to determine fatigue levels through sound, using a very simple, will not be detected, bringing physical and psychological burden.
This device since May 2008 in Tokyo's public transportation company began to experiment. The road before the driver sounds detected by them, can be easily understand their level of brain fatigue. If the driver discretion and energy decline in equipment will be given warning, thus avoiding the occurrence of accidents such as car nap. Because of this instrument are smaller and can also be used in taxis and trucks into. Apart from drivers, the future use of objects such devices include pilots, air controllers, train drivers and focus on the discretion and demanding doctors and nurses and other industries. The researchers said that with the ongoing development of this instrument is expected to lower the price to the current level of car navigation systems, and therefore will benefit thousands of families.
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