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I'm trying to use proximity sensing in PSOC 4100S Plus to sense hands within a specified distance of 5 cm.
To make this, I made the sensor by the PCB routing that you recommended, and It's sensor size is 5 cm length & 2 mm width.
I tried every combinations of the filters (except ALP), and found that it's hard to achieve the specified distance.
Maybe the ALP filter is our solution, but it doesn't seem to be able to use now, or do you have any alternate solutions ?
Thanks,
Haotian
Solved! Go to Solution.
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Are you referring to the "https://www.cypress.com/documentation/application-notes/an92239-proximity-sensing-capsense" design and tune your sensor? 5cm distance is very challenged for a wire sensor(5 cm length & 2 mm width) .
As mentioned in the above application note, Factors Affecting Proximity Distance are:
Proximity-sensing distance depends on the following hardware, software, and system parameters:
• Hardware parameters
Type of the sensor
Size of the sensor
Parasitic Capacitance (CP) of the sensor
Overlay material and thickness
Nearby floating or grounded conductive objects
Software parameters
Resolution of the sensor
Firmware filters
System parameters
Power consumption
Response time
EMI/EMC/ESD performance
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Could you share us your PCB file?
It is not very clear to understand what you say about the sense size 5cm? Circle? Rectangle? Or other shape?
Now, what does the distance it can reach?
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Are you referring to the "https://www.cypress.com/documentation/application-notes/an92239-proximity-sensing-capsense" design and tune your sensor? 5cm distance is very challenged for a wire sensor(5 cm length & 2 mm width) .
As mentioned in the above application note, Factors Affecting Proximity Distance are:
Proximity-sensing distance depends on the following hardware, software, and system parameters:
• Hardware parameters
Type of the sensor
Size of the sensor
Parasitic Capacitance (CP) of the sensor
Overlay material and thickness
Nearby floating or grounded conductive objects
Software parameters
Resolution of the sensor
Firmware filters
System parameters
Power consumption
Response time
EMI/EMC/ESD performance
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Sorry for the late reply, our customer reduced the requirement for sensing distance to 3 cm.
This distance is ok for our board, so we do not have any problems any more.
Thank you very much for your information. @LinglingG_46 @Roy_Liu
Best Regards,
Haotian