BS ISO 20912:2020 pdf free download.Conformance test methods for RFID enabled tyres.
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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirenwnts 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 (RF1D) tyre tags
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at httpj/www.electropedia.orgj
3.1 standalone tyre
non-mounted tyre
3.2 RFID enabled tyre
tyre featuring an RFID tag by means of an embedded, patch or sticker solution
3.3 measuring distance d linear distance between the RFID tag position and the interrogator antenna
3.4 received signal strength indicator RSSI indicative, non-calibrated value of the received power at the reader input
Note Ito entry: This is the power backscattered by the tag towards the reader and measured at the reader input. RSSI Is sometimes used to determine a tag’s distance, as the signal Is stronger from a tag that Is closer to the reader antenna, however, the reflections and attenuation due to different materials may distort it.
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-rn 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-rn radius around the test setup.
— The operator shall remain behind the reader (and not bctween 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.
4.2.3 Testing layout
4.2.3.1 General
Two testing layouts are defined. It is up to the tyre manufacturer to choose one or the other, depending of the R Fl D tag implementation/position.
4.2.3.2 Testing layout for the RFID in/on the tyre sidewall The layout is depicted in Figure_1.
The minimum distance, h1, between the tag position and the ground shall be at least at 1.5 rn or 5 times of the minimum reading distance defined in ISO 20909. whichever is the lowest.
The tyre shall he put directly on the ground or on a stand in the testing site, unmounted from the rim.
The minimum distance, h2, between the tag position and the ceiling shall be at least 1.5 rn or S times of the minimum reading distance defined in ISO 20909, whichever is the lowest.BS ISO 20912 pdf download.
Tags: Conformance test methods for RFID enabled tyres
-
ISO 8600-1-2013 pdf free download.Endoscopes – Medical endoscopes and endotherapy devices – Part 1: General requirements. 6 Marking 6.1 Minimum marking Iach individual endoscope or endotherapy device shall have the lollowing minimum marking: a) model number and/or other mark sufficient to identify the endoscope or endotherapy device and its manufacturer; b) maximum insertion portion width, minimum instrument channel width, working length, field of view and/or direction of view where such identification is necessary for the intended use of the endoscope or endotherapy device. The Insertion portion width and instrument channel width units shall be in millimetres. The insertion portion width and instrument channel width can also be marked in French size as defined in 3.5, shown by either ‘Fr or an encircled number; c) wherever reasonable and practicable. the endoscope or endotherapy device and detachable component(s) shall be identified in terms of lot numbers or serial numbers, etc. 6.2 Marking legibility The marking shall remain legible over the lifetime of the device when the endoscope or endotherapy device is used, cleaned, disinlected, sterilized and stored in accordance with the instruction manual. 6.3 Marking exceptions When marking on the endoscope or endotherapy device or detachable component(s) is impossible to achieve due…
-
ISO 15688-2012 pdf free download.Road construction and maintenance equipment – Soil stabilizers 一 Terminology and commercial specifications. This International Standard establishes the terminology, definitions of operation and commercial specifications for soil stabilizers and their components intended for use in road construction and pavement works. It does not apply to soil stabilizers used in agricultural applications. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.. ISO 3911, Wheels and rims for pneumatic tyres — Vocabulary, designation and marking ISO 6746-1, Earth-moving machinery — Definitions of dimensions and codes — Part 1: Base machine ISO 6746-2, Earth-moving machinery — Definitions of dimensions and codes — Part 2: Equipment and attachments ISO 7134. Earth-moving machinery — Graders — Terminology and commercial specifications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 soil stabilizer self-propelled machine, either towed or transported, with the function of pulverizing, breaking-up, aerating, homogenizing, and loosening existing and imported soil or paving materials and mixing them…
-
ISO 18436-1-2012 pdf free.Condition monitoring and diagnostics of machines – Requirements for qualification and assessment of personnel一 Part 1: Requirements for assessment bodies and the assessment process. 5 Requirements for assessment body personnel 5.1 General provisions In order to ensure that the assessment process is carried out effectively and uniformly, the competence requirements for personnel involved in the entire process shall be defined by the assessment body and, in the case of a third party, be approved by the responsible TCC (in accordance with ISO/IEC 17024). The assessment body shall require its personnel (internal or external) to sign a contract, or other document, by which they commit themselves to comply with the rules defined by the assessment body, including those relating to confidentiality and those relating to independence from commercial and other interests, and from any prior or present link with the persons to be examined that would, in the opinion of the interested parties, compromise impartiality. Clearly documented instructions shall be available to the personnel, describing their duties and responsibilities. These instructions shall be maintained up to date. All personnel involved in any aspect of assessment activities shall possess appropriate educational qualifications, experience and technical expertise, which satisfy defined…