In a lot of machines and scientific tests, you need a simple way to measure how far something has moved in a straight line. This is a common job in engineering and automation. The cable displacement sensor is a straightforward and dependable tool which is designed for this very purpose. In this blog, we will go over in simple terms how this sensor works, what its main parts are and where it is most commonly used.
Why Choose a Draw-Wire Sensor?
There are a lot of reasons why an engineer might choose this draw-wire sensor for a project. The two biggest reasons are its simple design and its flexible use.
Unlike some very complex electronic sensors, a draw-wire sensor is a mostly mechanical device. This simple construction makes it very strong and able to work well for a long time even in tough or dirty industrial settings like a factory floor. Because there are fewer complex electronic parts, it is a very dependable tool that you can count on to keep working.
These sensors are also very flexible. They can be used to measure both very short distances, sometimes up to many meters. This is all done with the same easy setup. This is why they are useful for a wide range of linear position measurement tasks from small robotic arms to large construction equipment.
What are the Different Parts and Their Work?
A cable displacement sensor has a few main parts which work together to measure the distance. Here’s what it consists of:
Spring-Loaded Spool
The core of the device is a carefully made reel that has a spring inside of it. This spring keeps the measuring cable pulled tight at all times with a light and constant tension. This tension is what allows the sensor to get a steady and correct reading as the cable moves.
Measuring Cable
A strong but very flexible stainless steel cable is wound around the spool. The end of this cable is what you attach to the moving object that you want to measure. As the object moves away from the sensor it pulls out the cable while it moves back, there’s a spring which pulls the cable back in.
Rotational Sensor
The spool is connected to a rotational sensor which is usually an encoder or a potentiometer. As the cable pulls out and makes the spool turn, this sensor measures exactly how much the spool has rotated. This is the basic strong potentiometer principle at work.
Output Signal
The rotational sensor’s job is to turn the measurement of how far the cable has been pulled into a clean electrical signal. This signal can be analog or digital and can be sent to a computer, a data logger, or a machine’s control system. It is a simple and direct way for you to get the distance measurement that you need for your work.
(Also Read: How Draw Wire Transducers Ensure Precision in Cable Measurement)
Where are Cable Displacement Sensors Used?
Since these are so simple and easy to use, you will find these industrial motion sensors in a lot of different fields. Here are some of its applications:
- Industrial Automation: You will definitely find a draw write position sensor on factory machines. They are used for a lot of things like to measure the exact position of a hydraulic arm, a moving part on a conveyor belt, or a cutting tool on a piece of equipment.
- Vehicle and Structural Testing: These sensors are also very common in testing and research. For instance, the engineers use cable displacement sensors to measure how much an airplane wing bends during a stress test. These are also used to check the movement of a car’s suspension system to see how it performs.
- Civil Engineering Projects: On a much larger scale, a cable displacement sensor can be used to watch over the health of big structures. They can be installed to check for any small movements in a bridge joint over many years. They can also be used to monitor for any cracks in a large concrete dam.
Wrapping Up
The cable displacement sensor is simple but a very useful tool for measuring movement in a straight line. It has a strong design and is flexible to use which is why it is great for a wide range of industrial, testing, and engineering jobs. You can visit our website to explore our range of industrial sensors.
Contact us at brt@briterencoder.com if you are looking for something to measure the linear distance, or if you have any queries related to the cable displacement sensor.
