The RP-C series thin film pressure sensors are constructed using ultra thin flexible materials combined with conductive layers and nano-scale pressure-sensitive materials. This design provides high sensitivity, long life operation, and stable performance across a wide range of environmental conditions.
Working Principle
The pressure sensor consists of two thin layers. The upper layer contains a pressure sensitive conductive material while the lower layer contains conductive traces. Under normal conditions the resistance between the terminals is extremely high.
When pressure is applied to the sensing area, the pressure sensitive layer connects the conductive traces, creating a conductive path. The resistance decreases as the applied force increases, allowing the pressure level to be measured through resistance or voltage change in a circuit.
Features
- Thin film flexible pressure sensor
- High sensitivity force detection
- Compact circular sensing area
- Supports both static and dynamic pressure measurement
- Ultra thin structure for easy integration
- Fast activation and response time
- Long operational lifespan
- Low power passive sensing element
- Easy interface with microcontrollers and analog circuits
Specifications
- Model: RP-C7.6-ST
- Product SKU: SEN0297
- Sensor Type: Thin Film Force Sensitive Pressure Sensor
- Sensing Area Diameter: 7.6 mm
- Thickness: 0.3 mm
- Trigger Force: 30 g (trigger when resistance less than 200 kΩ)
- Pressure Measurement Range: 30 g to 1.5 kg
- Measurement Method: Static and Dynamic Pressure Measurement
- Initial Resistance: Greater than 10 MΩ
- Activation Time: Less than 0.01 seconds
- Response Time: Less than 10 ms
- Operating Temperature: -40 C to 85 C
- Lifespan: More than 1 million cycles
- Hysteresis: Approximately 10 percent at 1000 g force
- Drift: Less than 5 percent at 1 kg static load for 24 hours
Applications
- Pressure detection systems
- Touch sensing interfaces
- Bed monitoring and occupancy detection
- Smart footwear and wearable devices
- Medical monitoring systems
- Robotics force sensing
- Human interaction detection
Basic Connection
The sensor operates as a variable resistor. It is typically connected in a voltage divider configuration with a fixed resistor. The resulting voltage can be measured using the analog input of a microcontroller such as Arduino, ESP32, or other development boards to determine the applied pressure.
Sample Code
/*************************************************** * Piezo Vibration Sensor **************************************************** * This example: The sensors detect vibration * @author linfeng([email protected]) * @version V1.0 * @date 2016-2-26 * GNU Lesser General Public License. * All above must be included in any redistribution ****************************************************/ #define sensorPin A0 void setup() { Serial.begin(115200); } void loop() { int x = analogRead(sensorPin); Serial.println(x); delay(50); }
Expected Results
The serial output changes as shown when the sensor is pressed. The serial data decreases linearly as the force increases. It is recommended to use the sensor for qualitative measurements.
The RP-C series thin film pressure sensors are constructed using ultra thin flexible materials combined with conductive layers and nano-scale pressure-sensitive materials. This design provides high sensitivity, long life operation, and stable performance across a wide range of environmental conditions.
Working Principle
The pressure sensor consists of two thin layers. The upper layer contains a pressure sensitive conductive material while the lower layer contains conductive traces. Under normal conditions the resistance between the terminals is extremely high.
When pressure is applied to the sensing area, the pressure sensitive layer connects the conductive traces, creating a conductive path. The resistance decreases as the applied force increases, allowing the pressure level to be measured through resistance or voltage change in a circuit.
Features
- Thin film flexible pressure sensor
- High sensitivity force detection
- Compact circular sensing area
- Supports both static and dynamic pressure measurement
- Ultra thin structure for easy integration
- Fast activation and response time
- Long operational lifespan
- Low power passive sensing element
- Easy interface with microcontrollers and analog circuits
Specifications
- Model: RP-C7.6-ST
- Product SKU: SEN0297
- Sensor Type: Thin Film Force Sensitive Pressure Sensor
- Sensing Area Diameter: 7.6 mm
- Thickness: 0.3 mm
- Trigger Force: 30 g (trigger when resistance less than 200 kΩ)
- Pressure Measurement Range: 30 g to 1.5 kg
- Measurement Method: Static and Dynamic Pressure Measurement
- Initial Resistance: Greater than 10 MΩ
- Activation Time: Less than 0.01 seconds
- Response Time: Less than 10 ms
- Operating Temperature: -40 C to 85 C
- Lifespan: More than 1 million cycles
- Hysteresis: Approximately 10 percent at 1000 g force
- Drift: Less than 5 percent at 1 kg static load for 24 hours
Applications
- Pressure detection systems
- Touch sensing interfaces
- Bed monitoring and occupancy detection
- Smart footwear and wearable devices
- Medical monitoring systems
- Robotics force sensing
- Human interaction detection
Basic Connection
The sensor operates as a variable resistor. It is typically connected in a voltage divider configuration with a fixed resistor. The resulting voltage can be measured using the analog input of a microcontroller such as Arduino, ESP32, or other development boards to determine the applied pressure.
Sample Code
/*************************************************** * Piezo Vibration Sensor **************************************************** * This example: The sensors detect vibration * @author linfeng([email protected]) * @version V1.0 * @date 2016-2-26 * GNU Lesser General Public License. * All above must be included in any redistribution ****************************************************/ #define sensorPin A0 void setup() { Serial.begin(115200); } void loop() { int x = analogRead(sensorPin); Serial.println(x); delay(50); }
Expected Results
The serial output changes as shown when the sensor is pressed. The serial data decreases linearly as the force increases. It is recommended to use the sensor for qualitative measurements.