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Calibration of smartphone light sensors with a near field communication enabled reference |
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| Author: | Leikanger, Tore1; Schuss, Christian1; Häkkinen, Juha1 |
| Organizations: |
1Circuits and Systems (CAS), University of Oulu, Oulu, Finland |
| Format: | article |
| Version: | accepted version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 1.2 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe201701131144 |
| Language: | English |
| Published: |
Institute of Electrical and Electronics Engineers,
2016
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| Publish Date: | 2017-01-15 |
| Description: |
AbstractThis paper describes a technique for calibrating the internal ambient light sensor (ALS) in smart phones. The calibration process depends on Near-Field Communication (NFC). The system consists of an NFC core implemented in an Field-Programmable Gate-Array (FPGA) development platform featuring the NFC analog front end circuit. In the proposed system, the smart phone interacts directly with a reference ALS through the NFC device The direct communication is possible with the help of a custom NFC command that controls an Inter-Integrated Circuit (I2C) master core in the FPGA. After the calibration process of the ALS in a smart phone is completed, the accuracy of the measurement is greatly improved. This is helpful to obtain precise information on the light intensity in indoor surroundings.see all
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| Series: |
Proceedings of IEEE Sensors |
| ISSN: | 1930-0395 |
| ISSN-E: | 2168-9237 |
| ISSN-L: | 1930-0395 |
| ISBN: | 978-1-4799-8287-5 |
| ISBN Print: | 978-1-4799-8288-2 |
| Pages: | 1571 - 1573 |
| DOI: | 10.1109/ICSENS.2016.7808930 |
| OADOI: | https://oadoi.org/10.1109/ICSENS.2016.7808930 |
| Host publication: |
2016 IEEE SENSORS |
| Conference: |
IEEE SENSORS |
| Type of Publication: |
A4 Article in conference proceedings |
| Field of Science: |
213 Electronic, automation and communications engineering, electronics |
| Subjects: | |
| Copyright information: |
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