Quarter- bridge strain gauge circuit

In summary, the conversation is about a quarter-bridge strain gauge circuit and how to obtain values with the effect of increasing temperature. The speaker is seeking help because they have been thinking about it for two days and are lost. They mention using resistors to balance the circuit and how the strain gauge's resistance will increase with temperature. They also express confusion about which equation to use. The conversation suggests seeking resources on the web for further clarification, specifically mentioning a link to one such resource.
  • #1
Janka
16
1
Could anybody help me please? :cry

If I have quarter- bridge strain gauge circuit, where strain gauge will have its initial resistance and i will add another 3 resistors, 1 on the same side like strain gauge, and another 2 on the opposite side, so I will balance circuit and my voltmeter reading will be zero.
With effect of increasing temperature , resistance on strain gauge will increase, how could i get the values? Please help me someone because I am thinking about it already two days and i am lost.

I have no idea what equation to use...:confused:
Thanks
 
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  • #2
There are lots of resources on the web for this problem. Here is one: https://www.electronics-tutorials.ws/blog/wheatstone-bridge.html

Look at this treatment and ask us to explain the parts that you find confusing.
 
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1. What is a quarter-bridge strain gauge circuit?

A quarter-bridge strain gauge circuit is a type of electrical circuit used to measure strain or deformation in materials. It consists of a strain gauge, which is a sensor that changes resistance when subjected to strain, and a Wheatstone bridge circuit, which is used to convert the change in resistance into an electrical signal that can be measured.

2. How does a quarter-bridge strain gauge circuit work?

The quarter-bridge strain gauge circuit works by measuring the change in resistance of the strain gauge when it is subjected to strain. When strain is applied to the material being measured, the strain gauge will change its resistance due to the deformation of the material. This change in resistance is then converted into a voltage signal by the Wheatstone bridge circuit, which can be measured by an external device.

3. What are the advantages of using a quarter-bridge strain gauge circuit?

One of the main advantages of using a quarter-bridge strain gauge circuit is its high sensitivity and accuracy. It can measure very small changes in strain and convert them into electrical signals, making it a valuable tool for precise measurements. Additionally, it is a relatively simple and cost-effective solution compared to other strain measurement techniques.

4. What are some common applications of quarter-bridge strain gauge circuits?

Quarter-bridge strain gauge circuits are commonly used in various industries for strain measurement, such as in civil engineering for monitoring the structural integrity of buildings and bridges, in aerospace for measuring deformation in aircraft components, and in manufacturing for quality control of products. They are also widely used in research and development for testing and analyzing the mechanical properties of materials.

5. How do I choose the right quarter-bridge strain gauge circuit for my application?

Choosing the right quarter-bridge strain gauge circuit depends on several factors, such as the type of material being measured, the expected strain range, and the required accuracy. It is important to carefully consider these factors and consult with experts to ensure that the circuit is suitable for your specific application. Additionally, selecting high-quality components and properly calibrating the circuit can also greatly impact its performance.

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