什么是负载电池 - 负载电池的应用

什么是负载电池 - 负载电池的应用

称重传感器是用于将力转换为电信号的设备。应变仪负荷电池是最常见的称重传感器。

应变仪
Strain gauge is one of the most popular types of transducer. It has got a wide range of applications. It can be used for measurement of force, torque, pressure, acceleration and many other parameters. The basic principle of operation of a strain gauge is simple: when strain is applied to a thin metallic wire, its dimension changes, thus changing the resistance of the wire.

实际称重细胞图
实际称重细胞图

还有其他类型的称重传感器如

  • 液压(或静水),
  • Pneumatic Load Cells,
  • 压电载荷电池,
  • 电容式负载电池,
  • Piezo resistive load cells..etc.

Load cells are used for quick and precise measurements. Compared with other sensors, load cells are relatively more affordable and have a longer life span.

How Strain Gauge load cell works
应变计载荷传感器的操作原理基于当由于应力而改变电导体的电阻改变的事实。Cu Ni合金通常用于应变仪施工,因为箔的电阻变化几乎与施加的菌株成比例。

loadcelll工作原理
loadcelll工作原理

电阻应变仪可以b的变化e utilized to measure strain accurately when connected to an appropriate measuring circuit. A load cell usually consists of four strain gauges in a Wheatstone bridge configuration. The electrical signal output is typically very small in the order of a few millivolts. It is amplified by an instrumentation amplifier before sending it to the measurement system. The output can be Digital or Analog (0-5V) depending on the application.

装载单元布线:

Load cell Wiring-Wheatstone Bridge
装载细胞接线 - 惠斯通布里奇姆

电容式负载细胞有效
电容式负载电池基于原理的原理,其中电容器随着负载越靠近电容器的两个板而变化的原理。电容传感器的结构比电阻式负载电池更简单。
电容技术可用于测量接近,湿度,倾斜,力,扭矩,流体质量,加速度和许多其他物理参数。这是一个非常多功能的参数,在小包装中提供巨大的敏感性。电容技术比应变仪设计更坚固,因此可以用于更广泛的工程应用中。

液压荷载电池如何运作
液压负载电池是力平衡装置,测量重量作为内部填充流体的压力的变化。在液压负载电池中,作用在装载头上的负载或力被转移到活塞上,其又将填充流体压缩在弹性体隔膜室内。随着力的增加,液压流体的压力增加。该压力可以局部地指示或发送用于远程指示或控制。该传感器没有电气部件并免受瞬态电压,因此适用于危险区域。液压载荷电池的优点是昂贵且非常复杂。

气动载荷如何工作
气动负荷电池对力平衡原理进行了运行。这些装置使用多个阻尼器室提供比液压装置更高的精度。气动负载电池通常用于测量清洁度和安全性是主要关注的行业中相对较小的重量。

称重传感器的优点

  • 坚固耐用,结构紧凑
  • 没有移动部件
  • 可用于静态和动态加载
  • 非常准确
  • 广泛的测量
  • 可用于静态和动态加载

称重传感器的缺点

  • 安装很难
  • 校准是一种繁琐的程序
  • How to select a load cell

Below are some of the important parameters that need to be considered while selecting the load cell.

  • 尺寸
  • Accuracy
  • 重量范围
  • Operating temperature
  • Duration of measurements
  • 安装
  • 输出类型
  • Cost
  • Direction of loading
  • 称重传感器

Sachin Thorat.

Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. Currently, he is working in the sheet metal industry as a designer. Additionally, he has interested in Product Design, Animation, and Project design. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos.

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