Analog-to-digital conversion reference drift automatic compensation method and device

• Main Authors: YAO QI, WANG XIAOFENG, SU YUTING, JIANG JIE, WANG LIANGBIN, WEI CHUNGUANG
• Format: Patent
• Language: Chinese; English
• Published: 23.08.2019
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

The invention relates to an analog-to-digital conversion reference drift automatic compensation method for an electrical control system. The method comprises the steps that a reference acquisition loop is arranged in the electrical control system; after the debugging of the electrical control system is completed, a conversion result of the analog-to-digital conversion for the reference acquisitionloop is read, and the conversion result of the reference acquisition loop is stored as a reference analog-to-digital conversion result in the electrical control system; in a normal working state, a conversion result of the analog-to-digital conversion for the reference acquisition loop is read as an analog-to-digital conversion result; difference operation is performed on the analog-to-digital conversion result and the reference analog-to-digital conversion result; and correspondingly the reference drift of the reference voltage is compensated based on the result of the difference operation.The invention further rela