ZERO POINT ADJUSTING CIRCUIT AND ZERO POINT ADJUSTING METHOD
PROBLEM TO BE SOLVED: To further appropriately adjust a zero point in a zero point adjusting device and a zero point adjusting method of a measuring instrument. SOLUTION: This zero point adjusting device 1 of the measuring instrument includes a bridge circuit 10, and resistance elements RC0-RC3 whos...
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| creator | SASAKI ZENSHI |
| description | PROBLEM TO BE SOLVED: To further appropriately adjust a zero point in a zero point adjusting device and a zero point adjusting method of a measuring instrument. SOLUTION: This zero point adjusting device 1 of the measuring instrument includes a bridge circuit 10, and resistance elements RC0-RC3 whose one-side terminals are connected to an output terminal b of the bridge circuit. A CPU (Central Processing Unit) 40 has a switching means 41 for selecting one from three connection states of the other terminal of each of the resistance elements RC0-RC3 and performing switching, and controls the switching means 41 based on an output signal of an ADC (Analog to Digital Converter) circuit 22. Specifically, management data described by 4 digits of ternary is used. Each of the 4 digits corresponds to each of the resistance elements RC0-RC3, and, as each digit value, one is specified from three connection states of the resistance elements RC0-RC3. The CPU 40 determines whether the level of the output signal exists in tolerance, sequentially selects a digit to be processed in the management data based on the determination result, and sequentially varies the value of the selected digit. COPYRIGHT: (C)2009,JPO&INPIT |
| format | Patent |
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SOLUTION: This zero point adjusting device 1 of the measuring instrument includes a bridge circuit 10, and resistance elements RC0-RC3 whose one-side terminals are connected to an output terminal b of the bridge circuit. A CPU (Central Processing Unit) 40 has a switching means 41 for selecting one from three connection states of the other terminal of each of the resistance elements RC0-RC3 and performing switching, and controls the switching means 41 based on an output signal of an ADC (Analog to Digital Converter) circuit 22. Specifically, management data described by 4 digits of ternary is used. Each of the 4 digits corresponds to each of the resistance elements RC0-RC3, and, as each digit value, one is specified from three connection states of the resistance elements RC0-RC3. The CPU 40 determines whether the level of the output signal exists in tolerance, sequentially selects a digit to be processed in the management data based on the determination result, and sequentially varies the value of the selected digit. 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The CPU 40 determines whether the level of the output signal exists in tolerance, sequentially selects a digit to be processed in the management data based on the determination result, and sequentially varies the value of the selected digit. 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SOLUTION: This zero point adjusting device 1 of the measuring instrument includes a bridge circuit 10, and resistance elements RC0-RC3 whose one-side terminals are connected to an output terminal b of the bridge circuit. A CPU (Central Processing Unit) 40 has a switching means 41 for selecting one from three connection states of the other terminal of each of the resistance elements RC0-RC3 and performing switching, and controls the switching means 41 based on an output signal of an ADC (Analog to Digital Converter) circuit 22. Specifically, management data described by 4 digits of ternary is used. Each of the 4 digits corresponds to each of the resistance elements RC0-RC3, and, as each digit value, one is specified from three connection states of the resistance elements RC0-RC3. The CPU 40 determines whether the level of the output signal exists in tolerance, sequentially selects a digit to be processed in the management data based on the determination result, and sequentially varies the value of the selected digit. COPYRIGHT: (C)2009,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MEDICAL OR VETERINARY SCIENCE PHYSICS SURGERY TARIFF METERING APPARATUS TESTING WEIGHING |
| title | ZERO POINT ADJUSTING CIRCUIT AND ZERO POINT ADJUSTING METHOD |
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