Apparatus and method for DC voltage measurement
First Claim
Patent Images
1. A method for DC voltage measurement, comprising:
- receiving an input DC voltage;
adding a temporary disturbance signal to the input DC voltage to obtain a disturbed signal, wherein an amplitude of the temporary disturbance signal is greater than precision level of an analog-to-digital converter;
converting the disturbed signal from analog to digital with the analog-to-digital converter to obtain a plurality of samples with different values;
deriving an average value from the samples; and
outputting the average value as a measurement value of the input DC voltage.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention provides a method for DC voltage measurement. First, an input DC voltage is received. A temporary disturbance signal is then added to the input DC voltage to obtain a disturbed signal, wherein an amplitude of the temporary disturbance signal is greater than precision level of an analog-to-digital converter. The disturbed signal is then converted from analog to digital with the analog-to-digital converter to obtain a plurality of samples with different values. An average value is then derived from the samples. Finally, the average value is output as a measurement value of the input DC voltage.
-
Citations
20 Claims
-
1. A method for DC voltage measurement, comprising:
-
receiving an input DC voltage; adding a temporary disturbance signal to the input DC voltage to obtain a disturbed signal, wherein an amplitude of the temporary disturbance signal is greater than precision level of an analog-to-digital converter; converting the disturbed signal from analog to digital with the analog-to-digital converter to obtain a plurality of samples with different values; deriving an average value from the samples; and outputting the average value as a measurement value of the input DC voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 20)
-
-
11. An apparatus for DC voltage measurement, comprising:
-
a disturbance circuit, receiving an input DC voltage, and adding a temporary disturbance signal to the input DC voltage to obtain a disturbed signal; an analog-to-digital converter, converting the disturbed signal from analog to digital to obtain a plurality of samples with different values; and a controller, deriving an average value from the samples, and outputting the average value as a measurement value of the input DC voltage, wherein an amplitude of the temporary disturbance signal is greater than precision level of the analog-to-digital converter. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
Specification