Title:
超音波式距離検出装置
Document Type and Number:
Japanese Patent JP7238448
Kind Code:
B2
Abstract:
A liquid level detector has an ultrasonic sensor connected thereto by two signal lines. When a drive signal is output from a drive circuit, the drive signal is output via an impedance matching circuit, thereby transmission and reception signals on the signal lines flow as complementary level signals. A receiver circuit obtains an amplified signal by amplifying the transmission and reception signals with a differential amplifier circuit, and by cutting a same phase noise signal.
Inventors:
Takuya Koizumi
Hiroki Iwamiya
Tetsuhiro Konno
Hiroki Iwamiya
Tetsuhiro Konno
Application Number:
JP2019022646A
Publication Date:
March 14, 2023
Filing Date:
February 12, 2019
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01S7/526; G01F23/2962; G01S7/524; G01S15/10
Domestic Patent References:
| JP2018194408A | ||||
| JP2006266740A | ||||
| JP2017212496A | ||||
| JP2016213344A | ||||
| JP2018096752A | ||||
| JP6258430A | ||||
| JP2015090268A |
Attorney, Agent or Firm:
Patent Attorney Corporation Sato