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A2P Pulse Duty

Instead of connecting the analog output to an AD converter to get the GP2Y0A02YK analog

voltage value, use the A2P Converter module to measure the pulse width directly. The pulse

is emitted every 10ms (1ms=1/1000 sec). The low pulse width represents the analog voltage

value. Its width varies from 0 to 4096 us (1us=1/1000 ms) with 2us resolution.

Figure 6 A2P Pulse Duty

The conversion formula is:

Width = Vi(analog input) / Vdd x 4096 (us)

Assuming the analog voltage output from GP2Y0A02YK is 3V and the supplied voltage is

5V. Applying the above formula:

3 / 5 x 4096 = 2457.6

≒

2458 (us)

the low pulse width will be 2458us.

Dimensions

Figure 7 GP2Y0A02YK Dimensions

Summary of Contents for IRF150

Page 1: ...with the PulseIn command The analog output can also be read directly with the command GetADC command from the I O Extender module The recommended detection range is 20 150cm Applications Short distanc...

Page 2: ...3 Connecting GP2Y0A02YK for analog output Figure 4 Connecting GP2Y0A02YK with A2P for pulse output Specifications Figure 5 GP2Y0A02YK Voltage vs Distance Characteristic Curve Vdd Input GND pin Pulse o...

Page 3: ...The low pulse width represents the analog voltage value Its width varies from 0 to 4096 us 1us 1 1000 ms with 2us resolution Figure 6 A2P Pulse Duty The conversion formula is Width Vi analog input Vdd...

Page 4: ...ulse width Pause 100 wait 100ms Loop infinite loop End Sub Example II Use GETADC command of I O Extender to measure GP2Y0A02YK analog output directly Set the DIP switch of the I O Extender module to 0...