OK/NG judgment of a motor (on production line)

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Measurement applications of HEV/EV
OK/NG judgment of a motor

Japanese Chinese

In this application, put the motor into an acrylic box to avoid the influence of background noise. And then drive the motor and detect the generated noise by the MI-1235 microphone with the MI-3111 microphone preamplifier. The CF-4700 FFT comparator makes OK/NG judgment of the signal through FFT analysis.

*PLC:Programmable Logic Controller

Configuration

	Model name	Product name	Remarks
1	CF-4700	FFT Comparator	Input channel:1ch Frequency range:1 Hz to 40 kHz Dynamic range:110 dB or more
2	MI-1235	1/2-inch Measurement microphone	Titanium diaphragm, higher stability, designed to emphasize on characteristic of frequency having wide frequency rangeFrequency range:10 Hz to 20 kHz Maximum sound pressure level:143 dB
3	MI-3111	Microphone preamplifier for the MI-1235	Frequency range:10Hz to 20kHz Internal noise:-22.3 μVrms or less(FLAT)

* *To see details of the each product, click the model name.

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