蓝猫淘气

Infrared speed measurement module

Overview

1. Use 100kHz to drive the infrared light-emitting tube, and obtain the occlusion signal after high-pass filtering and amplification, which can suppress the influence of ambient light. 2. The design time accuracy is 0.1ms. When the output pin is high, it is effective (that is, it is blocked). The filtering can be adjusted. Post amplifier gain to adjust sensitivity 3. The infrared tube is not soldered to the circuit board as shown, it needs to be 2 to 3 centimeters higher than the PCB, and bent so that it is relatively 4. V0.1 test version, the feasibility of this solution is being verified Abandoned, the ADC sampling solution is more cost-effective. Voltage rate detection or digital filtering can be used.

Design Files

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Update:2025-06-19 10:28:50

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