Rapid flicker fusion frequency critical value testing device and method

Abstract

The invention discloses a rapid flicker fusion frequency critical value testing device and method. The device comprises a digital discrimination plate, a frequency regulator and a digital input end, the digital discrimination plate comprises a backboard and a plurality of LED (light-emitting diode) lamps densely distributed on the surface of the backboard, the digital discrimination plate is connected with the digital input end through the frequency regulator, the digital input end is used for inputting figures discriminated by subjects, and the frequency regulator is used for distributing frequency of next group digital strokes according to discriminated digital stroke frequency after the figures inputted by the subjects at the digital input end are discriminated. According to the device, an identified digital combination method in a flicker background replaces a traditional dot flicker identification method in a flicker fusion frequency critical value tester, flicker fusion frequency critical values of people can be rapidly and accurately tested through digital identification, complicated detection operation steps are omitted, so that the subjects are detected in a short time, the possibility generating secondary fatigue is omitted, and detecting results are more accurate.

Description

technical field [0001] The invention belongs to the technical field of human visual function testing, and in particular relates to a quick test device and method for flicker fusion frequency critical value. Background technique [0002] Measuring human visual function, especially the critical value of flicker fusion frequency, is an important measurement technique involving physiology, medicine, psychology, and ergonomics. At present, there are a variety of instruments that can be used to measure the critical value of human flicker fusion frequency. They are in different states and have different characteristics, but they all have one thing in common, that is, the measurement time is long and the reliability is not high. And usually the frequency can only be adjusted by 0.1HZ each time, and the critical value of human flicker fusion frequency must be detected through multiple adjustments. The detection method is complicated and takes a long time; in addition, the subjects ar...

AI Technical Summary

Problems solved by technology

At present, there are a variety of instruments that can be used to measure the critical value of human flicker fusion frequency. They have different states and characteristics, but they all have one thing in common, that is, the measurement time is long and the reliability is not high.

And usually the frequency can only be adjusted by 0.1HZ each time, and the critical value of human flicker fusion frequency must be detected through multiple adjustments. The detection method is complicated and takes a long time; in addition, the subjects are prone to fatigue during the long-term detection process This leads to large errors in the measurement results

Images