Multi-channel position detection system

Details Multi-channel position detection system Multi-channel position detection system

H - Electricity

05

K

340/136, 356/22

H05K 13/04 (2006.01) B23Q 15/24 (2006.01) G01B 11/14 (2006.01)

Patent

CA 1205570

13 ABSTRACT OF THE DISCLOSURE The invention is a multi-channel position detec- tion system which utilizes several separate emitters and a single photodetector to, for example, align a multi-lead component manipulator with a predetermined location in a printed circuit board. An oscillator circuit generates a modulated signal for each emitter and a multiplier circuit develops an output signal based upon the oscillator output and the photodetector output. The photodetector provides an output responsive to the emitter signal as attenuated by the circuit board location relative to the emitter. When the lead hole of the circuit board is aligned with the emitter and photodetector minimum attenuation of the signal occurs.

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