在日常的生活、工作和学习中,电量的准确测量是必不可少的,而电压就是它的

In daily life, work and study, accurate measurement of electricity is essential, and voltage is one of its main measurement standards. With the development of the times, the problems of single measurement function and low accuracy of traditional digital smart voltmeters are becoming more and more obvious. In terms of various functions, they can no longer fully meet the needs of the modern electronics industry and teaching and research personnel; instead, single-chip technology is used The designed digital smart voltmeter just solves the problems of single function and low precision of the traditional digital smart voltmeter. Due to the development needs of the information age and science and technology, the basic functions and types of DC digital voltmeters using various microcontrollers will definitely become stronger and stronger, and more and more, the role will certainly be greater and greater, of which the use of microcontrollers The range of the voltage signal will definitely become wider and wider. <br>This design is to design a dual-integral DC digital voltmeter with a single-chip microcomputer as the core, to study and solve its single function, low accuracy, range switching and other problems. In order to make its display more clear and visible, the display color is brighter, this design uses LCD liquid crystal display as its display screen; and for the difficulty of automatic range switching, in the design, a single-chip microcomputer is used to control the multi-way switch. It is also a big problem that this design focuses on solving. <br>The design of the double-integral DC digital voltmeter is based on the 51 series single-chip microcomputer. The analog voltage is converted into the digital voltage twice by the double-integral A/D converter, and then the corresponding voltage is applied in the application software. Programming debugging and running, and finally get its final voltage measurement result through simulation. Throughout the product design process, modular technology research and design methods were used, and finally a new dual-integral digital DC voltmeter with automatic range switching and display functions was designed and developed, and the measured voltage signal It is clearly displayed on the display screen by the LCD liquid crystal digital display. The dual-integral DC digital voltmeter designed and developed by the single-chip microcomputer not only has complete functions and high measurement accuracy, but also is very convenient and fast to read; at the same time, it has the characteristics of stable working system performance and strong anti-interference ability. Therefore, it is very necessary to study the digital voltmeter.

Accurate measurement of electricity is essential in daily life, work and study, and voltage is one of its main measures. With the development of the times, the measurement function of traditional digital intelligence voltmeter is more and more obvious, its function solely can not meet the modern electronic industry and teaching and research personnel's use needs, and the use of microcontroller technology design of digital intelligent voltmeter, just effectively solve the current traditional digital intelligent voltmeter function single, low precision and so on. Due to the development needs of information age and science and technology, the basic function and type of DC digital voltmeter using various microcontrollers will certainly become stronger and stronger, more and more, the role will certainly be greater and greater, in which the range of voltage signals used by microcontrollers will certainly become more and more extensive.<br>This design is to design a two-integral DC digital voltage meter with a microcontroller as the core, and to study and solve its single function, low precision, range switching and so on. In order to make its display more visible, display color is brighter, the design uses LCD LCD display to do its display, and for the automatic switching of the range of this difficult point, in the design, the use of microcontroller control multiple switch break to solve, this is also a major problem that this design focuses on solving.<br>The design of the dual-integrated DC digital voltmeter is based on the 51 series microcontroller as the core, the analog voltage is converted into digital voltage twice through the dual-integrated A/D converter, and then the corresponding programming and operation in the application software, and finally the final voltage measurement results are obtained through simulation. In the whole product design process, using modular technical research and design methods, a new type of dual-integrated digital DC voltage meter with the function of automatic switching and display of range is finally designed and developed, and the voltage signal measured is clearly displayed by the LCD digital display on the display screen. The two-point DC digital voltage meter developed by the single-chip design is not only fully functional, high measurement accuracy, but also very convenient and fast to read the number, but also has the characteristics of stable working system performance and strong anti-jamming ability. Therefore, it is very necessary to study digital voltmeters.

In daily life, work and study, accurate measurement of electricity is essential, and voltage is one of its main measurement standards. With the development of the times, the problems of single measurement function and low accuracy of traditional digital intelligent voltmeter are becoming more and more obvious, which can not fully meet the use needs of modern electronic industry and teaching and scientific research personnel in all aspects of its functions; and the digital intelligent voltmeter designed by single-chip microcomputer technology, It can effectively solve the problems of single function and low precision of traditional digital intelligent voltmeter. Due to the development of information age and science and technology, the basic functions and types of DC digital voltmeter with various single-chip computers will be stronger and stronger, more and more, and its functions will be larger and larger, among which the voltage signal range used by single-chip computers will be wider and wider.<br>This design is to design a dual integral DC digital voltmeter with single chip microcomputer as the core, to study and solve its single function, low precision, range switching and other problems. In order to make its display more clear and bright, LCD is used as its display screen in this design; for the difficulty of automatic range switching, in the design, the single-chip microcomputer is used to control the on-off of multi-channel switch, which is also a major problem to be solved in this design.<br>The design of double integral DC digital voltmeter is based on 51 series single chip microcomputer. The analog voltage is converted into digital voltage by double integral A / D converter, and then it is programmed, debugged and operated in application software. Finally, the final voltage measurement result is obtained by simulation. In the whole process of product design, modular technology research and design method are used. Finally, a new type of double integral digital DC voltmeter with automatic range switching and display function is designed and developed, and the measured voltage signal is clearly displayed on the display screen by LCD digital display. The double integral DC digital voltmeter designed and developed by single chip microcomputer has not only complete functions and high measurement accuracy, but also is very convenient and fast to read the data. At the same time, it has the characteristics of stable working system performance and strong anti-interference ability. So it is necessary to study the digital voltmeter.<br>