Title:
ULTRASONIC SENSOR AND ULTRASONIC MEASUREMENT DEVICE
Document Type and Number:
Japanese Patent JP2015166024
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a measurement device capable of easily acquiring an optimum frequency deviation amount for measuring a blood flow with a simple constitution, a flow rate measurement method, and a pressure measurement method.SOLUTION: A biological examination apparatus comprises: an ultrasonic sensor 10 which includes a plurality of ultrasonic arrays 12 having a one-dimensional array structure in which a plurality of ultrasonic vibrators are arranged along a scan linear direction and capable of transmitting/receiving ultrasonic waves, and a substrate on which the ultrasonic arrays 12 are arranged in the state where the ultrasonic arrays 12 have mutually-different scan linear directions; a signal delay circuit 25 which controls the transmission angle of the ultrasonic wave transmitted from each ultrasonic array 12; a reception measurement part 26 which calculates a frequency deviation amount for each ultrasonic array 12 on the basis of a reception signal output from each ultrasonic array 12; and a central processing circuit 29 which acquires the maximum frequency deviation amount among the frequency deviation amounts calculated by the reception measurement part 26.
More Like This:
Inventors:
TSURUNO JIRO
Application Number:
JP2015133745A
Publication Date:
September 24, 2015
Filing Date:
July 02, 2015
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
A61B8/06; A61B8/04
Domestic Patent References:
| JP2005051690A | 2005-02-24 | |||
| JPH07124162A | 1995-05-16 | |||
| JP2006034667A | 2006-02-09 |
Attorney, Agent or Firm:
Intellectual Property Office