期刊论文

中文

计算机时代

1006-8228

2010

4

32-33+36

10.3969/j.issn.1006-8228.2010.04.013

(07A30):衡阳师范学院科学基金青年项目

本校为第一机构

以AT89S51单片机为核心,研制了一种新的由单片机控制的智能型多功能电子秤,通过测量电阻应变片的微小变形来测量物体的重量。该设备采用高精度前置放大器放大来自传感器的微弱信号,然后经A/D采样,实现模拟量的数字化。在单片机内部运用最小二乘法原理对数据进行线性化处理和运算,使物重的显示值更加接近真实值,提高了测量的精确度。通过按键实现单价的设置,能同时显示重量和单价,具有去皮和显示总价等多种功能。

Using AT89S51 single chip micyoco （SCM） as core, a new intelligent multi-function electronic scale controlled by SCM is developed, which can measure the weight of objects by detecting the tiny deformation of resistance strain gauges. The device uses high accuracy pre-amplifier to amplify the weak signals from sensors, then samples and achieves digitizing analog quantity by A/D converter. The principle of least square method is applied to do linear processing and operating of the data inside SCM, it makes the displayed weight value of objects ...