Fatigue assessment method of controllers based on CFF

doi:10.16265/j.cnki.issn1003-3033.2022.04.028

Abstract

Abstract:

In order to monitor fatigue risks of air traffic controllers during their duties, with their CFF as an index to evaluate fatigue degree, a relationship equation between fatigue degree and CFF was established based on KSS scale score. Then, fatigue indexes were defined to reflect fatigue state, and a fatigue evaluation method based on CFF value was established. Finally, through a 36-hour simulated control experiment under state of sleep deprivation, CFF and simulated control scores of five subjects were collected, and relationship between the indexes and simulated control scores was analyzed. The results show that the fatigue index of four subjects change periodically, while that of the other one decrease first and then increase all the time. And there is a negative correlation between fatigue index of each subject and their simulated control performance. With the progress of sleep deprivation experiment, the indexes of five subjects present an upward trend, while the simulated performance shows a downward trend.

Key words: critical flicker fusion frequency (CFF), fatigue of air traffic controllers, air traffic control simulation results, sleep deprivation, Karolinska sleepiness scale (KSS)

SUN Ruishan, CHEN Yi, SUN Libin. Fatigue assessment method of controllers based on CFF[J]. China Safety Science Journal, 2022, 32(4): 192-197.

Figures/Tables 7

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References 18

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试验次数	被试A		被试B		被试C
试验次数	KSS 评分	CFF/ Hz	KSS 评分	CFF/ Hz	KSS 评分	CFF/ Hz
1	2	36.25	1	31.75	3	31.75
	2	31.75	1	34.75	3	31.75
	3	34.75	1	34.75	3	31.25
	︙	︙	︙	︙	︙	︙
2	2	34.75	1	34.75	2	31.75
	2	36.25	4	31	3	31.75
	3	34.75	2	34.75	4	31.25
	︙	︙	︙	︙	︙	︙
3	2	36.25	1	34.75	2	31.75
	2	30.25	3	33	3	31.75
	2	34.75	5	31	3	31.25
	︙	︙	︙	︙	︙	︙

被试编号	时间	CFF/ Hz	疲劳指数F	疲劳程度	模拟管制测试得分
1	第一天18:00	36.25	0.67	非常警觉	81.67
	第一天20:00	37.5	-0.16	非常警觉	86.67
	︙	︙	︙	︙	︙
	第二天18:00	33	2.82	警觉	88.33
︙	︙	︙	︙	︙	︙
5	第一天18:00	31.75	3.65	一般	81.67
	第一天20:00	31.25	3.98	一般	86.67
	︙	︙	︙	︙	︙
	第二天18:00	31.25	3.98	一般	90

时间	疲劳指数均值	模拟管制测试得分均值
第一天18:00	2.23	85.00
第一天20:00	3.02	84.00
第一天22:00	2.19	82.00
第二天0:00	3.85	78.00
第二天2:00	3.43	81.00
第二天4:00	4.01	77.33
第二天6:00	3.35	84.67
第二天8:00	3.65	82.33
第二天10:00	3.55	84.33
第二天12:00	3.91	78.33
第二天14:00	3.88	78.00
第二天16:00	3.91	81.00
第二天18:00	4.58	82.00