CLAMP METER FOR MEASURING VOLTAGE AND CURRENT SIMULTANEOUSLY AND METHOD FOR THE SAME

• US 20120007588A1
• Filed: 07/06/2010
• Published: 01/12/2012
• Est. Priority Date: 07/06/2010
• Status: Abandoned Application

• Current Assignee: BRYMEN Technology Corporation
• Original Assignee: BRYMEN Technology Corporation
• Inventors: TAN, Po-Chao
• Application Number:
  US12/830,596
• Publication Number:
  US 20120007588A1
• Time in Patent Office: Days
• US Class Current: 324/126
• CPC Class Codes: G01R 1/22 Tong testers acting as secondary windings of current transformers
• CPC Class Codes: G01R 15/125 for digital multimeters
• CPC Class Codes: G01R 19/25 using digital measurement techniques

Abstract

A clamp meter for measuring voltage and current simultaneously includes a microcontroller unit, a current-side analog-digital converter unit electrically connected to the microcontroller unit and a current-measuring unit, a voltage-side analog-digital converter unit electrically connected to the microcontroller unit and a voltage-measuring unit. By providing dedicated analog-digital converter unit to the current-measuring unit and the voltage-measuring unit, the clamp meter is capable of measuring voltage and current precisely and simultaneously.

Claims

1. A clamp meter for measuring voltage and current simultaneously includes:

a microcontroller unit;

a current-side analog-digital converter unit electrically connected to the microcontroller unit;

a current-measuring unit electrically connected to the current-side analog-digital converter unit;

a voltage-side analog-digital converter unit electrically connected to the microcontroller unit; and

a voltage-measuring unit electrically connected to the voltage-side analog-digital converter unit.

2. The clamp meter for measuring voltage and current simultaneously in claim 1, further includes a display unit electrically connected to the microcontroller unit.

3. The clamp meter for measuring voltage and current simultaneously in claim 1, wherein the current-side analog-digital converter unit is a fast high resolution analog-digital converter.

4. The clamp meter for measuring voltage and current simultaneously in claim 1, wherein the voltage-side analog-digital converter unit is a fast high resolution analog-digital converter.

5. A method for using a clamp meter to measure voltage and current simultaneously and applied to a clamp meter to measure a measured object;

the method including the steps;

a. providing a current-side analog-digital converter unit in the clamp meter;

wherein the current-side analog-digital converter unit is electrically connected to a microcontroller unit and a current-measuring unit of the clamp meter;

b. providing a voltage-side analog-digital converter unit in the clamp meter;

wherein the voltage-side analog-digital converter unit is electrically connected to the microcontroller unit and a voltage-measuring unit of the clamp meter;

c. measuring the current and the voltage of the measured object simultaneously by the current-measuring unit and the voltage-measuring unit respectively to get a current-measuring signal and a voltage-measuring signal;

d. sending the current-measuring signal and the voltage-measuring signal from the current-measuring unit and the voltage-measuring unit to the current-side analog-digital converter unit and the voltage-side analog-digital converter unit respectively to get a digital current signal and a digital voltage signal simultaneously; and

e. sending the digital current signal and the digital voltage signal simultaneously from the current-side analog-digital converter unit and the voltage-side analog-digital converter unit respectively to the microcontroller unit.

6. The method for using a clamp meter to measure voltage and current simultaneously in claim 5 further including the step:

f. providing a display unit in the clamp meter.

7. The method for using a clamp meter to measure voltage and current simultaneously in claim 6 further including the step:

g. displaying the values of the digital current signal and the digital voltage signal on the display unit.

8. The method for using a clamp meter to measure voltage and current simultaneously in claim 5, wherein the current-side analog-digital converter unit is a fast high resolution analog-digital converter.

9. The method for using a clamp meter to measure voltage and current simultaneously in claim 5, wherein the voltage-side analog-digital converter unit is a fast high resolution analog-digital converter.