News
Analysis of the working principle of accelerometer
- Author:ROGER
- Release on:2021-05-17
AccelerationsensorCan help yourobotUnderstand the environment it is now. Is it climbing? Still walking down, falling? Or for a flying robot, it is also critical to the control posture. To make sure, your robot does not have a bomb to go to the crowd. A good programmer can use acceleration sensors to answer all the above questions. Acceleration sensors can even be used to analyzeengineofvibration.
bymeasuringDue to the acceleration caused by gravity, you can calculate the inclination angle of the device relative to the horizontal plane. By analyzing the dynamic acceleration, you can analyze the way the device moves. But when you start, you will find that the light measurement inclination and acceleration are not very useful. However, engineers have now taken a lot of methods to get more useful information.
Some laptops have built-in acceleration sensors, which can dynamically monitor the vibration in use, and the system is intelligent to turn off the hard drive or let it run, so that protects the maximum protection due to vibrations. For example, a bumpy working environment, or accidentally fell hard drive damage caused by the computer, the maximum protected data. Another use is currently used in digital cameras and cameras, as well as acceleration sensors, used to detect vibrations at the hands of shooting, and automatically adjust the focus of the camera based on these vibrations.
Acceleration sensors can be applied to control,handleVibration and shaking, instrumentation, automotive brake start detection, seismic testing, alarm system, toys, structural, environmental monitoring, engineering vibration isolation, geological exploration, railway, bridge, dam vibrationtestAnd analysis; mouse, high-rise building structure dynamic characteristics and safety defense vibration reconnaissance.
Acceleration sensor working principle
The principle of the line plus speed is the principle of inertia, that is, the balance of force, A (acceleration) = F (inertial force) / m (quality) We only need to measure F. How to measure F? Use electromagnetic force to balance this force. You can get F corresponding toCurrentRelationship. Just use the experiment to calibrate this scale factor. Of course, the intermediate signaltransmission,enlargeFilter isCircuitThe thing is.
Modern technology requires low-cost performance sensors, superior performance, easy to produce large quantities. In areas such as military, space systems, scientific measurements, an acceleration sensor having a small size, light weight and stable performance is required. The acceleration sensor manufactured in conventional processing methods is difficult to fully meet these requirements. The micro-velocity sensor produced by emerging micromechanical processing techniques should be born. This sensor is small, light, small power consumption, fast start, low cost, high reliability, and easy to realize digitization and intelligence. Moreover, due to the accuracy of the micromechanical structure, the repetitiveness is good, it is easy to integrate, suitable for mass production, and its performance is high. It is foreseeable in the near future, it will dominate in the acceleration sensor market.
Micro-velocity sensor has pressure resistive, piezoelectric,capacitanceForms of forms.
Piezoelectric sensors use spring quality system principles. The sensitive core mass is affected by the vibration acceleration, and the force proportional to the acceleration is generated. The piezoelectric material is formed to form a charge signal proportional to this force along its surface. Piezoelectric acceleration sensor hasDynamic RangeBig,frequencyWide wide range, rugged, small interference and piezoelectric material force self-generating charge signals do not require any externalpower supplyFeatures, is the most widely used vibrationMeasurement sensor. Although the electroless acceleration sensor is simple, commercial use history is also very long, but due to its performance index and material characteristics, design and processing processes, the actual parameters of similar sensor performance in the market and their stability And consistency is very different. And the pressure resistance andCapacitiveCompared to the largest disadvantage, the piezoelectric acceleration sensor cannot measure zero frequency signal.
bymeasuringDue to the acceleration caused by gravity, you can calculate the inclination angle of the device relative to the horizontal plane. By analyzing the dynamic acceleration, you can analyze the way the device moves. But when you start, you will find that the light measurement inclination and acceleration are not very useful. However, engineers have now taken a lot of methods to get more useful information.
Some laptops have built-in acceleration sensors, which can dynamically monitor the vibration in use, and the system is intelligent to turn off the hard drive or let it run, so that protects the maximum protection due to vibrations. For example, a bumpy working environment, or accidentally fell hard drive damage caused by the computer, the maximum protected data. Another use is currently used in digital cameras and cameras, as well as acceleration sensors, used to detect vibrations at the hands of shooting, and automatically adjust the focus of the camera based on these vibrations.
Acceleration sensors can be applied to control,handleVibration and shaking, instrumentation, automotive brake start detection, seismic testing, alarm system, toys, structural, environmental monitoring, engineering vibration isolation, geological exploration, railway, bridge, dam vibrationtestAnd analysis; mouse, high-rise building structure dynamic characteristics and safety defense vibration reconnaissance.
Acceleration sensor working principle
The principle of the line plus speed is the principle of inertia, that is, the balance of force, A (acceleration) = F (inertial force) / m (quality) We only need to measure F. How to measure F? Use electromagnetic force to balance this force. You can get F corresponding toCurrentRelationship. Just use the experiment to calibrate this scale factor. Of course, the intermediate signaltransmission,enlargeFilter isCircuitThe thing is.
Modern technology requires low-cost performance sensors, superior performance, easy to produce large quantities. In areas such as military, space systems, scientific measurements, an acceleration sensor having a small size, light weight and stable performance is required. The acceleration sensor manufactured in conventional processing methods is difficult to fully meet these requirements. The micro-velocity sensor produced by emerging micromechanical processing techniques should be born. This sensor is small, light, small power consumption, fast start, low cost, high reliability, and easy to realize digitization and intelligence. Moreover, due to the accuracy of the micromechanical structure, the repetitiveness is good, it is easy to integrate, suitable for mass production, and its performance is high. It is foreseeable in the near future, it will dominate in the acceleration sensor market.
Micro-velocity sensor has pressure resistive, piezoelectric,capacitanceForms of forms.
Piezoelectric sensors use spring quality system principles. The sensitive core mass is affected by the vibration acceleration, and the force proportional to the acceleration is generated. The piezoelectric material is formed to form a charge signal proportional to this force along its surface. Piezoelectric acceleration sensor hasDynamic RangeBig,frequencyWide wide range, rugged, small interference and piezoelectric material force self-generating charge signals do not require any externalpower supplyFeatures, is the most widely used vibrationMeasurement sensor. Although the electroless acceleration sensor is simple, commercial use history is also very long, but due to its performance index and material characteristics, design and processing processes, the actual parameters of similar sensor performance in the market and their stability And consistency is very different. And the pressure resistance andCapacitiveCompared to the largest disadvantage, the piezoelectric acceleration sensor cannot measure zero frequency signal.