BS ISO 20912:2020 pdf free.Conformance test methods for RFID enabled tyres.
BS ISO 20912 This document defines the test methods for validating the conformance of RFID enabled tyres with the minimum reading distance specifications given in ISO 20909.The two presented methodologies give comparable test results only when the same radio frequency and energy power parameters are used.Unless otherwise specified, the tests in this document are to be applied exclusively to a standalone RFID enabled tyre.
This document is not intended to set any requirement on mass production quality control, nor on the frequency for testing.The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 20909, Radio frequency identification (RFID) tyre tags.Also, there shall be no ceiling or at least no ceiling closer than those distances defined in 4.2.3.2 and 4.2.3.3 from the top of the tyre.The ground and the ceiling shall minimize electromagnetic reflections during the measurement in order to ensure the accuracy of the test result.No atmospheric event (such as snow and rain) shall take place at the testing area during the measurement.No environmental change shall occur during the measurement.There shall be at least a free space of 2-m radius (excluding testing equipment and device under test) around the tyre on the horizontal plane.Personnel should be prohibited to be in the proximity of a 2-m radius around the test setup.The operator shall remain behind the reader (and not between the reader and the tag).In general, the permeability and permittivity of supporting equipment like tyre stand and others should be low to not influence test results.To prevent any interference, it is recommended to set up a site survey in order to detect any use of radio frequency within the RFID frequency band. This can be done with a spectrum analyser and a
UHF antenna to ensure that the radio frequency transmission levels are at least 10 dB smaller than the backscattering signal from the RFID enabled tyre.BS ISO 20912 pdf download.