Flexible Piezoelectric Film Sensor – Pressure & Vibration Detection Module
The SF-15 is a thin, flexible, resistive-type pressure sensor designed to detect and measure force, load, or pressure through a change in electrical resistance. This sensor is ideal for applications where space-saving, lightweight, and flexible sensing elements are required. It responds predictably to increased pressure by decreasing its resistance, making it suitable for a variety of user interface, robotics, and industrial sensing applications.
Key Features:
Flexible and Ultra-Thin Design: Allows integration into compact or curved surfaces.
Force-Sensitive Resistor (FSR) Technology: Changes resistance with applied force.
Lightweight and Durable: Ideal for portable and embedded applications.
Fast Response Time: Suitable for real-time pressure monitoring.
Easy to Interface: Compatible with microcontrollers (Arduino, Raspberry Pi, etc.).
Technical Specifications:
| Parameter | Value |
|---|---|
| Model | SF-15 |
| Sensing Area | Ø 15 mm (Diameter) |
| Thickness | < 0.35 mm |
| Force Sensitivity Range | 0.1 N to 10 N (approx.) |
| Operating Voltage | 0 – 5 V DC (typical) |
| Resistance Range | >10 MΩ (no pressure) to ~1 kΩ (max) |
| Actuation Force | ~0.1 N (minimum detectable force) |
| Response Time | < 10 ms |
| Repeatability | ±2% of full scale |
| Operating Temperature | -20°C to 60°C |
| Connector Type | 2-pin solder pads or FPC terminals |
| Material | PET-based conductive polymer |
Working Principle:
When force is applied to the sensing area, the internal conductive particles of the sensor compress, causing a measurable decrease in electrical resistance. This resistance change can be measured via a simple voltage divider circuit.
Applications:
Pressure-sensitive touch interfaces
Robotics (grip force sensing)
Smart textiles and wearables
Industrial automation
Medical equipment (e.g., patient pressure pads)
Gaming and haptic feedback systems
Usage Tips:
Use with a pull-down resistor (typically 10kΩ) in a voltage divider configuration.
Calibrate for specific force ranges depending on the application.
Avoid sharp objects that could puncture the sensing film.
