Sensor detector circuit

Icez said:

Hi all..
i need to design a circuit to count the number of things passing through a sensor within a period of 14s. The circuit will show the number of box detected in this period...
can anyone help???

Click to expand...

Icez said:

Hi all..
i need to design a circuit to count the number of things passing through a sensor within a period of 14s. The circuit will show the number of box detected in this period...
can anyone help???

Click to expand...

you can use optical beam interrupter circuit (infrared). It consist of infrared tx/rx, then interface it with a monostable circuit to generate your counting pulse. You may use CD4026B as the counter and 7-segment LED as the display (common cathode).

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