Multifunctional high-accuracy electronic balance

Abstract

The invention discloses a multifunctional high-accuracy electronic balance. The internal structure of the electronic balance comprises an electromagnetic force balance sensor, a photoelectric detection circuit, a proportion integration differentiation (PID) regulation circuit, a signal modulation circuit, a data collection circuit, a microprocessor master control module and a temperature detection module. The electromagnetic force balance sensor, the photoelectric detection circuit and the PID regulation circuit form a closed system to improve accuracy and stability of the electronic balance. The multifunctional high-accuracy electronic balance is novel in design and convenient to operate. Due to adopting the electromagnetic force balance sensor and utilizing the null method principle to weigh quality of weighed object, the multifunctional high-accuracy electronic balance has excellent performance of being high in measurement accuracy, good in measurement stability and capable of performing continuous and repeated measurement. Besides, the multifunctional high-accuracy electronic balance further has functions of being various in measurement type, and capable of achieving full-automatic calibration and self-diagnosis of breakdown.

Description

technical field [0001] The invention relates to a balance, in particular to a high-precision multifunctional electronic balance, which belongs to the technical field of measurement. Background technique [0002] With the rapid development of electronic technology and microcomputer technology, and applied to the field of balance, electronic balance has appeared. From the appearance of the first electronic balance in the world in the late 1970s, in just 30 years, a series of electronic balances of various specifications and categories have been developed, which are widely used in quality measurement in various industries. Electronic balances have advantages that mechanical balances cannot match. It has digital display, direct reading, fast weighing, easy operation, strong anti-interference ability, and adopts microcomputer technology to make it intelligent and multi-functional. It can be connected with printers and computers for online measurement, making data statistical ana...

AI Technical Summary

Problems solved by technology

[0003] At present, the electronic balances produced in China have low circuit integration, and most of them use double-integral A / D converters composed of operational amplifiers, comparators, etc., and use analog circuits to achieve nonlinear correction and temperature compensation. There are complex circuits, Difficult debugging, low accuracy, poor reliability, etc. At the same time, the operation is cumbersome and the operability is low

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