The **IRS100-R11MF22** is a high-performance, long-range 2D millimeter-wave (mmWave) radar sensor. It is primarily used for outdoor perimeter security, intrusion detection, and object tracking. --- ### 1. Technical Specifications The core electronic components of this sensor are designed to operate in the 76-81 GHz frequency band, providing high resolution and resistance to environmental noise. | Feature | Specification | | :--- | :--- | | **Operating Frequency** | 76 GHz - 81 GHz | | **Detection Range** | Up to 100 meters (Human/Vehicle) | | **Detection Angle** | 120° (Horizontal) / 14° (Vertical) | | **Interface** | RJ45 (Ethernet), RS485 | | **Power Supply** | DC 12V / PoE (Power over Ethernet) | | **Power Consumption** | ≤ 5W | | **Protection Rating** | IP67 (Waterproof/Dustproof) | --- ### 2. Key Electronic Components & Subsystems The device consists of several critical internal stages that process electromagnetic waves into actionable data: #### A. MMIC (Monolithic Microwave Integrated Circuit) The "heart" of the device. It contains the **Transmitters (TX)** and **Receivers (RX)**. * **FMCW Modulation:** Uses Frequency Modulated Continuous Wave technology to calculate the distance and velocity of objects by measuring the frequency shift of the reflected signal. * **Beamforming:** The electronic circuitry controls the phase of the signal to "steer" the radar beam without moving parts. #### B. DSP (Digital Signal Processor) Once the analog signal is received, the DSP handles the heavy computational tasks: * **FFT (Fast Fourier Transform):** Converts time-domain signals into frequency-domain data to determine range and speed. * **Clutter Suppression:** Filters out "noise" caused by rain, fog, or swaying vegetation. * **Object Classification:** Algorithms distinguish between a human, a vehicle, or an animal. #### C. Connectivity & I/O * **PoE Module:** Allows the device to receive power and transmit data over a single Ethernet cable. * **Alarm Relays:** Often includes physical relay outputs to trigger sirens or cameras when a breach is detected. --- ### 3. Functional Capabilities The electronic architecture allows for advanced tracking features: 1. **Multi-Target Tracking:** Can track up to 32 targets simultaneously. 2. **Zone Configuration:** Users can electronically define "warning zones" and "alarm zones" via software. 3. **Low False Alarm Rate:** Unlike PIR (Passive Infrared) sensors, mmWave radar is not affected by temperature changes or light conditions. --- ### 4. Sample Integration (JSON/Data Output) The device typically outputs object data in a structured format via its API: ```json { "target_id": 1, "distance": 45.2, "angle": -15.5, "velocity": 1.2, "object_type": "human", "status": "alarm" } ```