Presentation 2019-09-19
A study on the optimal acquisition interval for sample and hold signals
Ryouichi Nishimura,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) Micro Electro Mechanical Systems (MEMS) sensors are promising for IoT applications because they are small and available at low prices. In general, the data observed by a MEMS sensor is temporarily stored in the register and needs to be read out by the host computer before it is updated. Therefore, a delay in reading register may result in the failure of data extraction. In contrast, reading the register twice before update results in the acquisition of redundant data. Therefore, it is desired that the sampling interval by the host computer exactly equals to the update period of the register. For that reason, estimation methods of this update period are herein discussed which is based on the observed data. To achieve this purpose, consecutive pairs of adjacent observed data are compared and binary values are assigned depending on whether they are equal or not. The obtained data sequence is regarded as a collection of binary random variables. Using this model, the update period is estimated by means of maximum likelihood estimation. Examples of applying this method and another to actual MEMS sensor data are presented.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) sampling interval / maximum likelihood estimation / binomial distribution / MEMS sensor / IoT
Paper # LOIS2019-10,IE2019-23,EMM2019-67
Date of Issue 2019-09-12 (LOIS, IE, EMM)

Conference Information
Committee IE / EMM / LOIS / IEE-CMN / ITE-ME / IPSJ-AVM
Conference Date 2019/9/19(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Tokimeito, Niigata University
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Hideaki Kimata(NTT) / Masaki Kawamura(Yamaguchi Univ.) / Tomohiro Yamada(NEL) / Shun Morimura(CRIEPI) / 田川 憲男(首都大東京) / Sei Naito(KDDI Research, Inc.)
Vice Chair Kazuya Kodama(NII) / Keita Takahashi(Nagoya Univ.) / Motoi Iwata(Osaka Prefecture Univ.) / Tetsuya Kojima(NIT,Tokyo College) / Toru Kobayashi(Nagasaki Univ.) / Kouji Hirata(Kansai Univ) / 新井 啓之(日本工大)
Secretary Kazuya Kodama(NTT) / Keita Takahashi(NHK) / Motoi Iwata(NIT, Nagano College) / Tetsuya Kojima(Nagase) / Toru Kobayashi(Research Organization of Information and Systems) / Kouji Hirata(NTT) / 新井 啓之(Tokai Univ.) / (Doushisya Univ)
Assistant Kyohei Unno(KDDI Research) / Norishige Fukushima(Nagoya Inst. of Tech.) / Masaki Inamura(Tokyo Denki Univ.) / Kazuhiro Kono(Kansai Univ.) / Kenichi Arai(Nagasaki Univ.) / Yuuichi Shinohara(TEPCO Power Grid) / Akihiro Tanaka(CRIEPI)

Paper Information
Registration To Technical Committee on Image Engineering / Technical Committee on Enriched MultiMedia / Technical Committee on Life Intelligence and Office Information Systems / Technical Meeting on Communications / Technical Group on Media Engineering / Special Interest Group on Audio Visual and Multimedia Information Processing
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A study on the optimal acquisition interval for sample and hold signals
Sub Title (in English)
Keyword(1) sampling interval
Keyword(2) maximum likelihood estimation
Keyword(3) binomial distribution
Keyword(4) MEMS sensor
Keyword(5) IoT
1st Author's Name Ryouichi Nishimura
1st Author's Affiliation National Institute of Information and Communications Technology(NICT)
Date 2019-09-19
Paper # LOIS2019-10,IE2019-23,EMM2019-67
Volume (vol) vol.119
Number (no) LOIS-205,IE-206,EMM-207
Page pp.pp.19-24(LOIS), pp.19-24(IE), pp.19-24(EMM),
#Pages 6
Date of Issue 2019-09-12 (LOIS, IE, EMM)