The vibration sensor is a widely used alarm detection sensor. It senses the parameters of mechanical motion vibration (such as vibration speed, frequency, acceleration, etc.) through the internal piezoelectric ceramic sheet and spring weight structure and converts it into an available output signal. Then it is amplified by an operational amplifier such as LM358 and outputs a control signal .
Vibration sensor is one of the key components in testing technology. It has the advantages of low cost, high sensitivity, stable and reliable operation, and a large adjustable range of vibration detection. It is widely used in many fields such as energy, chemical industry, medicine, automobile, metallurgy, machine manufacturing, military industry, scientific research and teaching.
Sophisticated industrial production processes increasingly depend on the efficient, reliable, and consistent operation of electric motors and associated machinery. Imbalances, imperfections, loose fasteners and other anomalies in machinery and equipment often translate into vibrations, resulting in loss of accuracy and safety concerns. If left unattended, in addition to performance and safety issues, there will inevitably be lost productivity if equipment is shut down for repairs. Even small changes in equipment performance, which are often difficult to predict in time, can quickly translate into significant productivity losses.
It is well known that process monitoring and condition-based predictive maintenance are a proven way to avoid lost productivity, but the complexity of this approach is outweighed by its value. Existing methods have limitations, especially when it comes to analyzing vibration data (however acquired) and identifying sources of error.
Typical data acquisition methods include simple piezoelectric sensors mounted on machines and handheld data acquisition tools. These approaches have several limitations, especially when compared to ideal comprehensive inspection and analysis system solutions that can be embedded on or in machines and work autonomously. These limitations are discussed in depth below and how they compare to the ideal solution – autonomous wireless embedded sensors . The options analysis for the complex system goal of fully embedded autonomous sensing elements can be broken down into ten different aspects, including achieving high repeatability of measurements, accurate evaluation of acquired data, proper documentation and traceability, etc.
At present, the handheld vibration probe has some advantages in terms of implementation methods, including no need to make any modifications to the terminal equipment, and its relatively high integration level and large size can provide sufficient processing power and storage space. However, one of its major limitations is that the measurements are not reproducible. Slight changes in probe position or angle can create inconsistent vibration profiles, making accurate time comparisons difficult.
Therefore, the maintenance technician first needs to ascertain whether the observed vibration excursions are due to actual changes within the machine, or simply due to changes in the measurement technique. Ideally, the sensor should be compact and sufficiently integrated to be permanently embedded directly inside the target device, eliminating measurement position drift and allowing complete flexibility in timing of measurements. Visit Misumi official website https://www.misumi.com.cn/ to learn more about electrical engineering
