Passive rotating speed counting device and counting method thereof
A technology of counting device and rotating speed, which is applied in the direction of measuring device, linear/angular velocity measurement, velocity/acceleration/shock measurement, etc. It can solve the problems of poor safety, low measurement accuracy, and susceptibility to interference, so as to eliminate the use of Electromagnetic hazards, improved detection accuracy, and superior anti-electromagnetic interference effects
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[0028] Please refer to figure 1 and figure 2 As shown, it shows the specific structure of a preferred embodiment of the present invention, including a rotational speed output device 10 and a passive rotational speed counter device 20. The rotational speed output device 10 uses its rotational speed output shaft 11 to output rotational kinetic energy. The passive rotational speed counter device 20 is used to detect the rotation of the rotational speed output shaft 11 to obtain real-time rotational characteristic data information of the rotational speed output device 10 .
[0029] Specifically, the passive tachometer device 20 of this embodiment includes a processing module 21 , a turntable 22 and two optical fiber transmission paths 201 and 202 . Wherein, the processing module 21 is used to process the optical signal received by the following receiving optical fiber 24 to calculate the rotational speed.
[0030] Each of the two optical fiber transmission paths 201 and 202 has...
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