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Saturday 16 November 2013

Digital Vibration Sensor

Overview


This basic piezo sensor can be used in anti-theft devices, electronic locks, mechanical equipment vibration detection, and detection range bull's-eye counts vibration testing occasions. A simple resistor should get the voltage down to ADC levels. These ADC levels could be given to any controller/processor and necessary decisions could be taken through it.

Features
  • Sensitivity adjustable.
  • The vibration detection has no direction. 
  •  With analog, digital and TTL level output signal. 

Applications
·         Vibration analysis
·         Shock detection and event capture
·         Condition monitoring
 

Using The Sensor

  • Connect +5v to pin 2 and ground to pin 5 and 6. 
  •  Pin 4 and 5 should be connected to particular transmitter and receiver pin of controller. 
  •  Output pin may be connected to any port pins and can be used to any application.

Working
Digital vibration sensing in the ADIS16220 starts with a wide- bandwidth MEMS accelerometer core that provides a linear motion-to-electrical transducer function. Figure 6 provides a basic physical diagram of the sensing element and its response to linear acceleration. It uses a fixed frame and a moving frame to form a differential capacitance network that responds to linear acceleration. Tiny springs tether the moving frame to the fixed frame and govern the relationship between acceleration and physical displacement. A modulation signal on the moving plate feeds through each capacitive path into the fixed frame plates and into a demodulation circuit, which produces the electrical signal that is proportional to the acceleration acting on the device.


Pin Out Details:

Configuring Vibration Sensor Module
ATMEL Digital IO Schematic:
ATMEL Digital IO Code:
For Code Click Here

ATMEL UART Schematic:
ATMEL UART Code:
For Code Please Click Here