The ISO 11452 series of standards developed by the International Standards Organization (ISO) defines component test methods for electrical disturbances in road vehicles caused by narrowband radiated electromagnetic energy.
Essentially, the ISO 11452 standard consists of the following standards under the main title "Road vehicles - Component test methods for electrical disturbances caused by narrowband radiated electromagnetic energy":
The ISO 11452-1 standard specifies general conditions, defines terms, gives practical guidelines, and provides the basic principles of component testing used in other parts of this standard to determine the immunity of electronic components of passenger cars and commercial vehicles to electrical disturbances from narrowband radiated electromagnetic energy independent of the vehicle propulsion system. is offered.
The ISO 11452-2 standard provides a shielded enclosure test method with an absorber liner to test the immunity (non-vehicle radiation source) of electronic components for passenger cars and commercial vehicles independent of the propulsion system. The device under test, together with the wiring harness, with peripheral devices inside or outside the enclosure, is subject to electromagnetic disturbance generated within a shielded enclosure with an absorber liner. This standard only applies to disturbances caused by continuous narrowband electromagnetic fields.
The ISO 11452-3 standard specifies transverse electromagnetic cell tests to determine the immunity of electronic components of passenger cars and commercial vehicles, regardless of the vehicle propulsion system, e.g. spark ignition engine, diesel engine or electric motor, to electrical disturbances caused by narrowband radiated electromagnetic energy. The electromagnetic disturbances considered are limited to continuous narrowband electromagnetic fields.
The ISO 11452-4 standard defines hardware excitation test methods and procedures for determining the immunity of electronic components of passenger cars and commercial vehicles, independent of the propulsion system. The bulk current injection test method is based on the injection of current into the harness using a current probe as a transformer, where the harness forms the secondary winding.
In the ISO 11452-5 standard, lane line test methods are defined in order to determine the immunity of electronic components of vehicles against electrical disturbances caused by narrowband electromagnetic energy. Because the performance of these tests is dependent on the equipment harness being exposed to an area of disruption, the applicability of this standard is limited to equipment harnesses with a maximum diameter of one-third or less of the lane line height.
In the ISO 11452-6 standard, the parallel plate antenna test method is defined.
The ISO 11452-7 standard describes a direct RF power injection test to determine the immunity of vehicle electronic components to electrical disturbances from narrowband electromagnetic energy. The test method, which involves providing differential mode excitation to the device under test, is applicable to all tested device leads except RF ground.
The ISO 11452-8 standard defines test methods for the electromagnetic immunity of electronic components of vehicles to magnetic fields. These sources are the internal magnetic field (sources inside the vehicle) and the external magnetic field (sources outside the vehicle). To perform this test, the device under test is exposed to a magnetic disturbance field.
The ISO 11452-9 standard describes test methods and procedures for determining the electromagnetic immunity of electronic components for vehicles to portable transmitters. The device under test, together with the wiring harness, with peripheral devices inside or outside the enclosure, is subject to electromagnetic disturbance produced by portable transmitters in an absorber-lined shielded enclosure.
The ISO 11452-10 standard defines a voltage test method and procedure carried out to determine the immunity of electronic components of vehicles. This test method is applied to each device at the tested terminal and to all power and output terminals as well as low frequency analog terminals. It is particularly useful in the evaluation of tested devices with acoustic or visible imaging functions. Disturbances covered by this standard are limited to continuous narrowband electrical voltage waveforms.
The ISO 11452-11 standard describes an echo chamber method for testing the immunity of electronic components in vehicles (to external radiation sources). The device under test, along with its wiring harness, is exposed to electromagnetic disturbance generated inside the echo chamber, either inside or outside the chamber, along with surrounding devices. It is applicable to disturbances caused by continuous narrowband electromagnetic fields.
Among the numerous test, measurement, analysis and evaluation studies that our organization provides for businesses in various sectors, with its trained and expert staff and advanced technological equipment, within the scope of ISO 11452 standard, component testing services for electrical disturbances caused by narrow band radiated electromagnetic energy in road vehicles are also provided. gives.
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