Method for 315/433 MHz Remote Keyless Entry sensitivity and range statistical analysis for automotive applications

Frankiewicz, Maciej; Jableka, Marek; Boroń, Krzysztof; Urban, Patryk J.; Guzdzik, Janusz; Ryszko, Andrzej; Jiang, George

doi:10.1109/mixdes.2015.7208567

Cited by 2 publications

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The Application of Commercial Surface Acoustic Wave Radio Communication Filters as Transducers for DMMP Sensors

Grabka,

Jasek,

Pasternak

et al. 2024

Sensors

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In the present study, we used two popular radio communication SAW resonators as a base for gas sensors and tested their performance. Taking into account issues related to sensor sensitivity, the possibility of applying a sensor layer, the availability of devices, and other related issues, we selected two popular single-port resonators with center frequencies of 315 and 433 MHz (models R315 and R433, respectively) for testing purposes. Both resonators were equipped with a sensitive film of hexafluoroisopropanol-substituted polydimethylsiloxane, a material that selectively absorbs molecules with a high ability to form basic hydrogen bonds. Fabricated sensors were used to detect trace amounts of dimethyl methylphosphonate (DMMP) vapor, which has often been used in similar studies as a nerve chemical warfare agent simulant. Sensors using both devices loaded with sensor layers of an optimal thickness rapidly reacted to a gas containing DMMP at a concentration of 3 mg/m3, generating a stable analytical signal ranging from several to several dozen kilohertz. In the case of R433, the frequency signal was 20.5 kHz at 1 min from the beginning of exposure to DMMP. The obtained results showed that the used transducers exhibited good performance as a base for gas sensors. Finally, their suitability for sensing applications was confirmed by a comparison with the results obtained in previous similar studies.

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