The **FVS-6B-R** is a specific electronic component typically categorized as a **Vibration Sensor** (often referred to as a "Seismic Sensor") manufactured by companies like MoriSawa or similar specialized electronic component firms. It is designed to detect mechanical vibrations or tilts and convert them into electrical signals. --- ### 1. Key Technical Specifications The FVS-6B-R is characterized by its sensitivity and its mechanical-to-electrical switching behavior. | Feature | Description | | :--- | :--- | | **Component Type** | Vibration / Motion / Tilt Sensor | | **Contact Type** | Normally Open (NO) or Normally Closed (NC) depending on orientation | | **Max Voltage** | Typically 12V - 24V DC | | **Current Rating** | Low current (Signal level), usually < 20mA | | **Mounting Style** | Through-hole (PCB Mount) | | **Operating Temp** | -10°C to +60°C | --- ### 2. Internal Mechanism The "B" in the series often refers to the internal ball-contact mechanism. * **Conductive Ball:** Inside the housing is a small, conductive metal ball. * **Circuit Completion:** When the device is stationary and level, the ball rests on two contacts, completing (or breaking) a circuit. * **Vibration Trigger:** When a vibration or shock occurs, the ball moves or bounces, momentarily interrupting the electrical connection. * **Output:** This creates a "pulse" or a change in state that a microcontroller (like an Arduino or PLC) can interpret as a trigger event. --- ### 3. Common Applications Because of its durability and simplicity, the FVS-6B-R is used in several safety and security fields: 1. **Anti-Theft Devices:** Detecting if a vehicle or a piece of high-value equipment is being moved or tampered with. 2. **Safety Shut-off:** Used in space heaters or appliances to shut off power if the device tips over (Tilt sensing). 3. **Security Alarms:** Detecting forced entry through windows or vibrations on a fence. 4. **Wake-up Circuits:** Used to "wake up" a battery-powered device from sleep mode when it is picked up or moved. --- ### 4. Integration Example (Pseudo-code) To use this in a digital circuit, you would typically treat it as a momentary switch with a pull-up resistor. ```cpp const int sensorPin = 2; // Pin connected to FVS-6B-R void setup() { pinMode(sensorPin, INPUT_PULLUP); // Use internal pull-up Serial.begin(9600); } void loop() { int sensorState = digitalRead(sensorPin); if (sensorState == HIGH) { Serial.println("Vibration Detected!"); // Trigger alarm or action here } } ``` ---