Hello
I have an application that uses a 125 KHz RFID reader, a 10cm square antenna at 700 uH and passive nail-type RFID tags. The tags are embedded in objects that pass through the antenna. About 98 per cent of the time, the tag is read correctly, but 2 per cent of the time it is not read at all. It may be connected with the orientation of the tag relative to the antenna, which I cannot change.
The modules I am using are these
https://www.electrodragon.com/product/125khz-rfid-long-distance-module-40cm-serial/
I have tried all the suggestions listed on the site's wiki, such as smoothing the DC input with a capacitor and keeping the leads from the antenna to the module short. At the moment I have two ideas - one is to build in redundancy with a second antenna and module so that I get two chances to read the tag. The other is to boost the signal from the antenna. But I do not know whether this is possible, or whether it is simply a signal:noise problem.
Any thoughts?
I have an application that uses a 125 KHz RFID reader, a 10cm square antenna at 700 uH and passive nail-type RFID tags. The tags are embedded in objects that pass through the antenna. About 98 per cent of the time, the tag is read correctly, but 2 per cent of the time it is not read at all. It may be connected with the orientation of the tag relative to the antenna, which I cannot change.
The modules I am using are these
https://www.electrodragon.com/product/125khz-rfid-long-distance-module-40cm-serial/
I have tried all the suggestions listed on the site's wiki, such as smoothing the DC input with a capacitor and keeping the leads from the antenna to the module short. At the moment I have two ideas - one is to build in redundancy with a second antenna and module so that I get two chances to read the tag. The other is to boost the signal from the antenna. But I do not know whether this is possible, or whether it is simply a signal:noise problem.
Any thoughts?