Piezo Sensor - MiniSense 100
Introduction
The MiniSense 100 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. Horizontal and vertical mounting options are offered. The active sensor area is shielded for improved RFI/EMI rejection. Rugged, flexible PVDF sensing element withstands high shock overload. Sensor has excellent linearity and dynamic range, and may be used for detecting either continuous vibration or impacts. The mass may be modified to obtain alternative frequency response and sensitivity selection (consult factory). 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 sensor may be used 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. Impacts containing high frequency components will excite the resonance fre-quency, as shown in the plot above (response of MiniSense 100 to a single half-sine impulse at 100 Hz, of amplitude 0.9 g). The ability of the sensor to detect low frequency motion is strongly influenced by the external electrical circuit.
Model:SEN127A3M
Features
- Low cost
- Cantilever-type vibration sensor
- High sensitivity at low frequencies
- Active sensor area is shielded for improved RFI/EMI rejection
- Excellent linearity and dynamic range
- Rugged, flexible PVDF sensing element withstands high shock overload
Application Ideas
- Detect either continuous
- Impulsive vibration or impacts
Cautions
The warnings and wrong operations possible cause dangerous.
Schematic
It is the schematic, the circuit about Eagle resource like .pdf should linked here in order to avoid memory exhausted.
Specification
Typical Properties (at 25°C)
Parameter | Value | Units |
Voltage Sensitivity (open-circuit, baseline) | 1.1 | V/g |
Charge Sensitivity (baseline) | 260 | pC/g |
Resonance Frequency | 75 | Hz |
Voltage Sensitivity (open-circuit, at resonance) | 6 | V/g |
Upper Limiting Frequency (+3 dB) | 42 | Hz |
Linearity | +/-1 | % |
Capacitance | 244 | pF |
Dissipation Factor | 0.018 | (none) |
Inertial Mass | 0.3 | gram |
Environmental Specifications
Parameter | Value | Units |
Storage Temperature | -40 to +80 deg C | |
Operating Temperature | -20 to +60 deg C | |
Weight | Minisense 100H | 0.5 gram |
Minisense 100V | 0.6 gram |
Pin definition and Rating
Mechanic Dimensions
Usage
Hardware Installation
Programming
Includes important code snippet. Demo code like :
Demo code { }
Example
The projects and application examples.
Bill of Materials (BOM) /parts list
All the components used to produce the product.
FAQ
Here is the Sensors FAQ, users can find questions and answers here for sensors.
Support
If you have questions or other better design ideas, you can go to our forum or wish to discuss.
Version Tracker
Revision | Descriptions | Release Date |
v1.0 | Initial public release | Jul 07, 2009 |
Bug Tracker
Bug Tracker is the place you can publish any bugs you think you might have found during use. Please write down what you have to say, your answers will help us improve our products.
Additional Idea
The Additional Idea is the place to write your project ideas about this product, or other usages you've found. Or you can write them on Projects page.
Resource
How to buy
Click here to buy: http://www.seeedstudio.com/depot/piezo-sensor-minisense-100-p-426.html?cPath=84_88&zenid=020999c566d2f31841dc54602b7d02ef.
See Also
Other related products and resources.
Licensing
This documentation is licensed under the Creative Commons Attribution-ShareAlike License 3.0 Source code and libraries are licensed under GPL/LGPL, see source code files for details.
External Links
Links to external webpages which provide more application ideas, documents/datasheet or software libraries