Ultrasound device testing

Patent metadata

Field	Value
Publication number	US-9429609-B2
Application number	US-201213430261-A
Country	US
Kind code	B2
Filing date	Mar 26, 2012
Priority date	Apr 6, 2007
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

Systems and methods disclosed herein provide for the assessment of acousto-electrical probes, such as their connections (e.g., transducer leads) and their response characteristics. An example method of determining a capacitance capability of an electrical lead for an ultrasound device includes discharging stored capacitance of the electrical lead; applying power to the electrical lead; during applying power to the electrical lead, counting clock cycles from a microprocessor; comparing a electrical lead voltage to a reference voltage; stopping counting clock cycles when the electrical lead voltage passes the reference voltage; and processing a number of counted clock cycles, in response to stopping the counting clock cycles to determine a capacitance of the electrical lead.

First claim

What is claimed is:

1. A method of determining a capacitance capability of an electrical lead in an ultrasound device, the method including:
discharging stored capacitance of the electrical lead;
applying power to the electrical lead;
during said applying power to the electrical lead, counting clock cycles from a microprocessor;
comparing an electrical lead voltage to a reference voltage;
stopping said counting clock cycles when the electrical lead voltage passes the reference voltage;
in response to stopping said counting clock cycles, processing a number of counted clock cycles, and a resistance associated with the electrical lead to determine a capacitance of the electrical lead;
characterizing the electrical lead based on the determination of the capacitance of the electrical lead;
outputting the characterization of the electrical lead for the ultrasound device; and
providing a connection for the electrical lead based on the characterization.

2. The method of claim 1 , wherein the reference voltage is between about 3 and 6 volts.

3. The method of claim 1 , wherein the ultrasound device comprises an ultrasound probe, and wherein the electrical lead is coupled to a transducer configured with the ultrasound probe.

4. The method of claim 1 , further including transferring a clock signal through the electrical lead to determine a data transfer rate of the electrical lead, wherein characterizing the electrical lead is based on the determination of the capacitance of the electrical lead and the data transfer rate of the electrical lead.

Assignees

• Markoff Nickolas
• Cone Christopher M
• Gen Electric

Inventors

• Markoff Nickolas
• Cone Christopher M

Classifications

• A61B6/585

  Calibration of detector units · CPC title

• G01R27/2605 Primary

  Measuring capacitance (capacitive sensors G01D5/24) · CPC title

• G01N29/30

  Arrangements for calibrating or comparing, e.g. with standard objects · CPC title

• G01R31/11

  using pulse reflection methods · CPC title

• G01R31/2886

  Features relating to contacting the IC under test, e.g. probe heads; chucks (G01R31/2865 takes precedence, test connections, e.g. test sockets, or probes per se, G01R1/04 or G01R1/06) · CPC title