| 基于C语言的直流数字电压表设计 |
| |
| 引用本文： | 李思嘉,;刘秋朋,;张继学,;张爱丽.基于C语言的直流数字电压表设计[J].计算机与网络,2014(16):54-56. |
| |
| 作者姓名： | 李思嘉 ;刘秋朋 ;张继学 ;张爱丽 |
| |
| 作者单位： | [1]河南师范大学物理与电子工程学院,河南新乡453007; [2]河南师范大学计算机与信息工程学院,河南新乡453007; [3]新乡市国营第七六零厂,河南新乡453000 |
| |
| 基金项目： | 河南师范大学大学生创新创业训练计划项目（20130012）;教育厅科学技术研究重点项目（13A5111533） |
| |
| 摘 要： | 针对传统数字电压表结构复杂、成本高、寿命短和不便升级等问题,提出来一种基于C语言以P89V51单片机为控制核心的数字电压表,硬件电路采用正负双积分型A/D转换器;电源电路用稳压芯片LM7805和LM7905来处理,电压负荷在＋5 V和-5 V电压之间;数字信号处理采用CD4052B,由LM324构成量程自动转换电路。控制功能用C语言编程实现。测量范围：10 mV-2 V,分辨率1 mV（2 V档）;测量误差小于±0.5 V;输入电阻大于1 MΩ。实验结果表明,该电压表能够抑制工频干扰且测量精度高,具有自动校零、量程自动切换功能和便于自动升级等优点。
|
| 关 键 词： | 数字电压表 自动转换 控制 单片机 |
Design on DC Digital Voltage Meter Based on C Language |
| |
| Affiliation: | LI Si-jia, LIU Qiu-peng, ZHANG Ji-xue, ZHANG Ai-li (1 College of Physics and Electronic Engineering, Henan Nomlal University, Xinxiang He＇nan 453(107, China) (2 College of Computer ＆lntbmlation Engineering, Henan Normal University, Xinxiang He＇nan 4530(17, China) (3 Nationalized Seventh Six Zero Factory, Xinxiang He＇ nan 453000. China) |
| |
| Abstract: | Aiming at the shortconfings of traditional digital voltage meter such as complex structure, high cost, short service life and difficult upgrade, a digital voltage meter is proposed, which is based on C language and uses P89V51 single chip nficrocomputer as control core. The hardware circuit uses dual integrating A/l） converter; the power supply circuit is handled by steady voltage chip LM781）5 and LM7905; the voltage load ranges from ＋5 V to -5 V; the digital signal processing adopts CD4052B, and the automatic range conversion circuit is constituted by LM324. The control thnction is implemented by C language programing. The measurement range is from 10 mV to 2 V, the resolution ratio is 1 mV （2V gear）; the measurement error is less than ＋ 0.5 V; the input resistance is greater than 1 MΩ The experimental results show that the voltage meter can restrain the power interference, has high measurement accuracy and such advantages as automatic zero, automatic range switching and automatic upgrade. |
| |
| Keywords: | digital voltage meter automatic switching control single chip microcomputer |
| 本文献已被 维普 等数据库收录！ |
|
