Sensitivity correction control of the ultrasonic sensor due to Doppler shift

Yoshikazu Koike, Shin Ichi Alzawa

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Authors propose the use of an ultrasonic transducer to achieve a passive safety system for a collision using a corner sensor. However, the sensitivity of the transducer decreases owing to Doppler shift in the case of a travelling car. On the contrary, authors also propose a resonance control method for the transducer using a generalized impedance converter (GIC) circuit. In this study, the resonance control frequency method is used to correct the sensitivity of the transducer. In the sensitivity control, the input impedance control of the GIC circuit is tried using a voltage-controlled resistance. The automatic sensitivity correction control is expected to be realized by a combination of the GIC circuit and frequency-voltage (F/V) converter. As a result, the sensitivity of a Langevin transducer with a GIC circuit as a receiver is slightly improved, compared with that of a retailed transducer. Moreover, the resonance frequency of the transducer can be controlled in the range of about 3 kHz using the GIC circuit and F/V converter.

Original languageEnglish
Pages (from-to)4041-4043
Number of pages3
JournalJapanese Journal of Applied Physics
Volume47
Issue number5 PART 2
DOIs
Publication statusPublished - 2008 May 23

Fingerprint

Ultrasonic sensors
Doppler effect
converters
Transducers
transducers
ultrasonics
impedance
sensitivity
shift
sensors
Networks (circuits)
Electric potential
electric potential
Ultrasonic transducers
frequency control
Security systems
Railroad cars
safety
receivers
Sensors

Keywords

  • Doppler shift
  • Frequency control
  • GIC circuit
  • Passive safety system
  • Sensitivity control
  • Ultrasonic sensor

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Sensitivity correction control of the ultrasonic sensor due to Doppler shift. / Koike, Yoshikazu; Alzawa, Shin Ichi.

In: Japanese Journal of Applied Physics, Vol. 47, No. 5 PART 2, 23.05.2008, p. 4041-4043.

Research output: Contribution to journalArticle

@article{a3758276da1a4d6487dcca35d880cd89,
title = "Sensitivity correction control of the ultrasonic sensor due to Doppler shift",
abstract = "Authors propose the use of an ultrasonic transducer to achieve a passive safety system for a collision using a corner sensor. However, the sensitivity of the transducer decreases owing to Doppler shift in the case of a travelling car. On the contrary, authors also propose a resonance control method for the transducer using a generalized impedance converter (GIC) circuit. In this study, the resonance control frequency method is used to correct the sensitivity of the transducer. In the sensitivity control, the input impedance control of the GIC circuit is tried using a voltage-controlled resistance. The automatic sensitivity correction control is expected to be realized by a combination of the GIC circuit and frequency-voltage (F/V) converter. As a result, the sensitivity of a Langevin transducer with a GIC circuit as a receiver is slightly improved, compared with that of a retailed transducer. Moreover, the resonance frequency of the transducer can be controlled in the range of about 3 kHz using the GIC circuit and F/V converter.",
keywords = "Doppler shift, Frequency control, GIC circuit, Passive safety system, Sensitivity control, Ultrasonic sensor",
author = "Yoshikazu Koike and Alzawa, {Shin Ichi}",
year = "2008",
month = "5",
day = "23",
doi = "10.1143/JJAP.47.4041",
language = "English",
volume = "47",
pages = "4041--4043",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "Japan Society of Applied Physics",
number = "5 PART 2",

}

TY - JOUR

T1 - Sensitivity correction control of the ultrasonic sensor due to Doppler shift

AU - Koike, Yoshikazu

AU - Alzawa, Shin Ichi

PY - 2008/5/23

Y1 - 2008/5/23

N2 - Authors propose the use of an ultrasonic transducer to achieve a passive safety system for a collision using a corner sensor. However, the sensitivity of the transducer decreases owing to Doppler shift in the case of a travelling car. On the contrary, authors also propose a resonance control method for the transducer using a generalized impedance converter (GIC) circuit. In this study, the resonance control frequency method is used to correct the sensitivity of the transducer. In the sensitivity control, the input impedance control of the GIC circuit is tried using a voltage-controlled resistance. The automatic sensitivity correction control is expected to be realized by a combination of the GIC circuit and frequency-voltage (F/V) converter. As a result, the sensitivity of a Langevin transducer with a GIC circuit as a receiver is slightly improved, compared with that of a retailed transducer. Moreover, the resonance frequency of the transducer can be controlled in the range of about 3 kHz using the GIC circuit and F/V converter.

AB - Authors propose the use of an ultrasonic transducer to achieve a passive safety system for a collision using a corner sensor. However, the sensitivity of the transducer decreases owing to Doppler shift in the case of a travelling car. On the contrary, authors also propose a resonance control method for the transducer using a generalized impedance converter (GIC) circuit. In this study, the resonance control frequency method is used to correct the sensitivity of the transducer. In the sensitivity control, the input impedance control of the GIC circuit is tried using a voltage-controlled resistance. The automatic sensitivity correction control is expected to be realized by a combination of the GIC circuit and frequency-voltage (F/V) converter. As a result, the sensitivity of a Langevin transducer with a GIC circuit as a receiver is slightly improved, compared with that of a retailed transducer. Moreover, the resonance frequency of the transducer can be controlled in the range of about 3 kHz using the GIC circuit and F/V converter.

KW - Doppler shift

KW - Frequency control

KW - GIC circuit

KW - Passive safety system

KW - Sensitivity control

KW - Ultrasonic sensor

UR - http://www.scopus.com/inward/record.url?scp=54949154181&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=54949154181&partnerID=8YFLogxK

U2 - 10.1143/JJAP.47.4041

DO - 10.1143/JJAP.47.4041

M3 - Article

VL - 47

SP - 4041

EP - 4043

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 5 PART 2

ER -