The RP-L series flexible pressure sensors are constructed from ultra thin films with excellent mechanical properties, conductive materials, and nano scale pressure sensitive layers. The upper layer contains the pressure sensitive film while the lower layer contains conductive circuit traces. These layers are bonded together with double sided adhesive.
When external pressure is applied to the active sensing area, the conductive path in the lower layer connects through the pressure sensitive layer in the upper film. This converts the applied force into a change in electrical resistance, where the resistance decreases as pressure increases.
Working Principle
The pressure sensor consists of two thin film layers. The upper layer contains a pressure sensitive conductive material while the lower layer contains conductive circuit traces. Under normal conditions, the resistance between the sensor terminals remains very high.
When pressure is applied to the sensing surface, the pressure sensitive material connects the conductive traces, forming a conductive path. As the applied force increases, the resistance decreases. This resistance change can be measured using a voltage divider circuit connected to a microcontroller analog input.
Features
- Long flexible thin film pressure sensor
- 170 mm sensing strip for distributed pressure detection
- High sensitivity force detection
- Supports static and dynamic pressure measurement
- Fast activation and response time
- Ultra thin and flexible structure
- Long operational lifespan
- Simple analog interface using resistance change
- Suitable for embedded sensing and wearable systems
Specifications
- Model: RP-L-170
- Product SKU: SEN0293
- Sensor Type: Thin Film Force Sensitive Pressure Sensor
- Sensing Length: 170 mm
- Thickness: 0.35 mm
- Trigger Force: Less than 20 g (trigger when resistance less than 200 kΩ)
- Pressure Measurement Range: 20 g to 10 kg or higher
- 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 2.5 kg static load for 24 hours
Applications
- Pressure switches
- Bed monitoring and occupancy detection systems
- Smart footwear and wearable devices
- Medical monitoring equipment
- Robotics touch sensing
- Human machine interaction systems
- Force distribution measurement
Basic Connection
The sensor operates as a variable resistor. It is commonly 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
#define sensorPin A0
void setup() {
Serial.begin(115200);
}
void loop() {
int x = analogRead(sensorPin);
Serial.println(x);
delay(50);
}
Expected Results
When the sensor is pressed, the analog value printed on the serial monitor changes accordingly. The output value decreases as the applied force increases. The sensor is typically used for qualitative force or pressure detection rather than precise calibrated measurements.
The RP-L series flexible pressure sensors are constructed from ultra thin films with excellent mechanical properties, conductive materials, and nano scale pressure sensitive layers. The upper layer contains the pressure sensitive film while the lower layer contains conductive circuit traces. These layers are bonded together with double sided adhesive.
When external pressure is applied to the active sensing area, the conductive path in the lower layer connects through the pressure sensitive layer in the upper film. This converts the applied force into a change in electrical resistance, where the resistance decreases as pressure increases.
Working Principle
The pressure sensor consists of two thin film layers. The upper layer contains a pressure sensitive conductive material while the lower layer contains conductive circuit traces. Under normal conditions, the resistance between the sensor terminals remains very high.
When pressure is applied to the sensing surface, the pressure sensitive material connects the conductive traces, forming a conductive path. As the applied force increases, the resistance decreases. This resistance change can be measured using a voltage divider circuit connected to a microcontroller analog input.
Features
- Long flexible thin film pressure sensor
- 170 mm sensing strip for distributed pressure detection
- High sensitivity force detection
- Supports static and dynamic pressure measurement
- Fast activation and response time
- Ultra thin and flexible structure
- Long operational lifespan
- Simple analog interface using resistance change
- Suitable for embedded sensing and wearable systems
Specifications
- Model: RP-L-170
- Product SKU: SEN0293
- Sensor Type: Thin Film Force Sensitive Pressure Sensor
- Sensing Length: 170 mm
- Thickness: 0.35 mm
- Trigger Force: Less than 20 g (trigger when resistance less than 200 kΩ)
- Pressure Measurement Range: 20 g to 10 kg or higher
- 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 2.5 kg static load for 24 hours
Applications
- Pressure switches
- Bed monitoring and occupancy detection systems
- Smart footwear and wearable devices
- Medical monitoring equipment
- Robotics touch sensing
- Human machine interaction systems
- Force distribution measurement
Basic Connection
The sensor operates as a variable resistor. It is commonly 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
#define sensorPin A0
void setup() {
Serial.begin(115200);
}
void loop() {
int x = analogRead(sensorPin);
Serial.println(x);
delay(50);
}
Expected Results
When the sensor is pressed, the analog value printed on the serial monitor changes accordingly. The output value decreases as the applied force increases. The sensor is typically used for qualitative force or pressure detection rather than precise calibrated measurements.