differential bridge

简明释义

差动电桥

英英释义

例句

1.In strain gauge applications, a differential bridge helps to eliminate noise and improve measurement accuracy.

在应变计应用中，differential bridge有助于消除噪声并提高测量精度。

2.Using a differential bridge configuration allows for better common-mode rejection in amplifiers.

使用differential bridge配置可以在放大器中实现更好的共模抑制。

3.The differential bridge is often used in load cells to provide precise weight measurements.

differential bridge通常用于称重传感器，以提供精确的重量测量。

4.The engineer designed a circuit with a differential bridge to enhance the sensitivity of the pressure sensor.

工程师设计了一个带有differential bridge的电路，以增强压力传感器的灵敏度。

5.The temperature sensor uses a differential bridge to accurately measure the temperature changes.

温度传感器使用differential bridge来准确测量温度变化。

作文

The concept of a differential bridge is crucial in the field of electrical engineering and instrumentation. It is primarily used for measuring small changes in resistance, which can be essential in various applications such as strain gauges, temperature sensors, and pressure transducers. The differential bridge operates on the principle of balancing two legs of a bridge circuit, allowing for precise measurements of voltage differences that correspond to changes in resistance. To understand how a differential bridge works, it is important to first grasp the basic structure of a Wheatstone bridge, from which the differential bridge is derived. A typical Wheatstone bridge consists of four resistors arranged in a diamond shape. By adjusting one of the resistors, the bridge can be balanced so that no current flows through the galvanometer connected between the two midpoints of the bridge. This balance indicates that the ratio of the two resistors on one side is equal to the ratio on the other side. In a differential bridge, two similar bridge circuits are used to compare two different resistance values. This configuration enhances the sensitivity of the measurement and reduces the effects of temperature variations and other external factors that could lead to inaccurate readings. The differential bridge amplifies the voltage difference between the two bridge circuits, making it easier to detect minute changes in resistance, which is particularly useful in applications that require high precision. One of the most common uses of a differential bridge is in the measurement of strain. Strain gauges, which are devices that measure the deformation of an object when subjected to stress, are often integrated into a differential bridge circuit. When the object deforms, the resistance of the strain gauge changes, altering the balance of the bridge. The resulting voltage change can then be measured and correlated to the amount of strain experienced by the object. This application is vital in structural engineering, where monitoring the integrity of buildings and bridges is essential for safety. Another significant application of the differential bridge is in temperature measurement. Thermistors and RTDs (Resistance Temperature Detectors) can be incorporated into a differential bridge to provide accurate temperature readings. As the temperature changes, the resistance of these sensors varies, and the differential bridge allows for precise detection of these changes, making it possible to monitor temperature in various industrial processes and environmental conditions. In summary, the differential bridge serves as a powerful tool in the realm of electrical measurements. Its ability to detect small changes in resistance with high accuracy makes it indispensable in numerous applications, from structural health monitoring to temperature sensing. Understanding the workings and advantages of a differential bridge not only deepens one's knowledge of electrical engineering but also highlights the importance of precision in scientific measurements. As technology continues to advance, the relevance of the differential bridge in various fields will undoubtedly persist, paving the way for innovations that rely on accurate data collection and analysis.

差分桥的概念在电气工程和仪器仪表领域至关重要。它主要用于测量电阻的小变化，这在应变计、温度传感器和压力传感器等各种应用中都是必不可少的。差分桥的工作原理是平衡桥电路的两个支路，从而允许精确测量与电阻变化相对应的电压差。要理解差分桥的工作原理，首先必须掌握从中派生出的惠斯登桥的基本结构。典型的惠斯登桥由四个电阻器以菱形形状排列而成。通过调整其中一个电阻器，可以使桥电路达到平衡状态，使连接在桥中间两个点之间的电流为零。这种平衡表示一侧两个电阻器的比例等于另一侧的比例。在差分桥中，使用两个相似的桥电路来比较两个不同的电阻值。这种配置增强了测量的灵敏度，并减少了温度变化和其他外部因素对不准确读数的影响。差分桥放大两个桥电路之间的电压差，使得检测微小的电阻变化变得更加容易，这在需要高精度的应用中尤为有用。差分桥最常见的应用之一是在应变测量中。应变计是测量物体在施加应力时变形的设备，通常集成在差分桥电路中。当物体变形时，应变计的电阻发生变化，从而改变桥电路的平衡。随后可以测量到的电压变化与物体所经历的应变量相关联。这种应用在结构工程中至关重要，因为监测建筑物和桥梁的完整性对于安全至关重要。差分桥的另一个重要应用是温度测量。热敏电阻和RTD（电阻温度探测器）可以被纳入差分桥中，以提供准确的温度读数。随着温度的变化，这些传感器的电阻也会变化，而差分桥则允许精确检测这些变化，使得能够监测各种工业过程和环境条件下的温度。总之，差分桥作为电气测量领域的一种强大工具。它以高精度检测电阻的小变化的能力，使其在众多应用中不可或缺，从结构健康监测到温度传感。理解差分桥的工作原理和优点不仅加深了人们对电气工程的知识，也突显了科学测量中精确性的必要性。随着技术的不断进步，差分桥在各个领域的重要性无疑将持续存在，为依赖准确数据收集和分析的创新铺平道路。