---
title: "Motion Sensor"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MOTION_SENSOR"
  data_integrity_hash: "95a4d23176152f463a1fc42896d3841f"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:MOTION_SENSOR"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/motion-sensor.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/motion-sensor"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-15 m"
    unit: "degrees"
engineering_limits:
  max_safe_operating_point:
    value: 3
    unit: "dB"
    consequence: "Doppler shift detection threshold violation due to thermal noise floor exceeding -110 dBm at 10.525 GHz operating frequency"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electrostatic discharge exceeding 8 kV HBM"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrated TVS diode clamping at 6.5 V with 1.5 pF parasitic capacitance"
  - node_2:
      trigger: "Ambient temperature exceeding 85°C junction temperature"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Thermal shutdown circuit activating at 80°C with 5°C hysteresis"
bom_nodes:
  pir-sensor-element:
    type: "component"
    urn: "URN:CNFX:ME:PIR_SENSOR_ELEMENT"
    interface_type: "physical-logic-coupled"
  fresnel-lens:
    type: "component"
    urn: "URN:CNFX:ME:FRESNEL_LENS"
    interface_type: "physical-logic-coupled"
  signal-processing-circuit:
    type: "part"
    urn: "URN:CNFX:ME:SIGNAL_PROCESSING_CIRCUIT"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "CE MARKING (EU DIRECTIVE 2014/35/EU): LOW VOLTAGE DIRECTIVE FOR ELECTRICAL EQUIPMENT"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/motion-sensor.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "1680752be352e5bd71d8514be2c44114339f0a63503ba627002576396c965843"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Motion Sensor

## 1. Technical Definition
Electronic device that detects movement within its detection range

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-15 m**. Failure boundary: **Signal-to-noise ratio &lt; 3 dB at 1 m distance**, Mechanism: **Doppler shift detection threshold violation due to thermal noise floor exceeding -110 dBm at 10.525 GHz operating frequency**.

### 2.1 Analytical Physics Model
Governed by the **Combined Measurement Uncertainty**:

> **Primary Equation**: $u_c = \sqrt{\sum u_i^2}$  
> **Engineering Impact**: Defines the precision confidence interval for inspection.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| u_i | Standard Uncertainty components | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Electrostatic discharge exceeding 8 kV HBM | 8 | CMOS sensor array latch-up causing permanent 5 V rail short circuit | Integrated TVS diode clamping at 6.5 V with 1.5 pF parasitic capacitance |
| Ambient temperature exceeding 85°C junction temperature | 8 | PLL frequency drift beyond ±75 ppm causing false motion detection | Thermal shutdown circuit activating at 80°C with 5°C hysteresis |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | degrees | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Signal Processing Circuit](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/signal-processing-circuit.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Automated Test Equipment**, **Pick-and-Place Machine**, **Reflow Oven**  
**Downstream Applications**: Security Systems, Smart Home Devices, Industrial Automation Controllers  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: How does the PIR sensor element detect motion?
**A**: The PIR (Passive Infrared) sensor detects changes in infrared radiation emitted by moving objects within its detection range, triggering the signal processing circuit.

### Q: What is the purpose of the Fresnel lens in this motion sensor?
**A**: The Fresnel lens focuses infrared radiation onto the PIR sensor element, increasing detection range and sensitivity while creating multiple detection zones for better coverage.

### Q: Can this motion sensor be integrated with existing security systems?
**A**: Yes, the electronic circuit board includes standard output signals compatible with most security and automation systems, allowing easy integration into existing setups.

## 6. Manufacturing Compliance
- CE MARKING (EU DIRECTIVE 2014/35/EU): LOW VOLTAGE DIRECTIVE FOR ELECTRICAL EQUIPMENT

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Motion Sensor](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/motion-sensor)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: MOTION_SENSOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: f4289f5d
