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Piezo Vibration Sensor, Small, Horizontal Mount, 1.1V/g US$2.95

Piezo Vibration Sensor, Small, Horizontal Mount, 1.1V/g

The MiniSense 100H (also known as 1005939-1, LDTC-H or PZ-08) is a low-cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low frequencies. Pins are designed for easy installation and are solderable. They are straight pins, which makes for an installation horizontal to the host PCB. The active sensor area is shielded for improved RFI/EMI rejection. A rugged, flexible PVDF sensing element withstands high shock overload.

This sensor has excellent linearity and dynamic range, and may be used for detecting either continuous vibration or impacts. The MiniSense 100 acts as a cantilever-beam accelerometer. When the beam is mounted horizontally, acceleration in the vertical plane creates bending in the beam, due to the inertia of the mass at the tip of the beam. Strain in the beam creates a piezoelectric response, which may be detected as a charge or voltage output across the electrodes of the sensor. The open-circuit baseline is 1.1V/g. A resistor can be used to reduce this to keep it within your microcontroller's ADC levels.

You can use the sensor to detect either continuous or impulsive vibration or impacts. For excitation frequencies below the resonant frequency of the sensor, the device produces a linear output governed by the baseline sensitivity. The sensitivity at resonance is significantly higher (over 5V/g). Impacts containing high-frequency components will excite the resonance frequency. The ability of the sensor to detect low-frequency motion is strongly influenced by the external electrical circuit.

There is a hole in the sensor's 0.5-gram weight, so you can tie a thread to it and detect vibrations generated by contact with the thread.

See also the vertical-mount version of this sensor.

Vibration Sensor Features

  • Length: 1.78 cm
  • Width: 0.60 cm
  • Operating Temperature: -20 to +60 C
  • Storage Temperature: -40 to +80 C
  • Voltage Sensitivity: 1.1V/g (open circuit, baseline)
  • Charge Sensitivity: 260 pC/g
  • Resonance Frequency: 75 Hz
  • Voltage Sensitivity: 6V/g (open circuit, at resonance)
  • Upper Limiting Frequency (+3 dB): 42 Hz
  • Linearity: 1%
  • Capacitance: 244 pF
  • Dissipation Factor: 0.018
  • Minimum Consumption: 0A

MiniSense 100H Documentation

Compatible with Waspmote

This sensor can be used in a Waspmote wireless sensor platform by plugging it into the Waspmote Events Sensor Board.

This product was added to our catalog on Tuesday 08 July, 2014.


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