---
title: "Touchscreen HMI"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:TOUCHSCREEN_HMI"
  data_integrity_hash: "ddb062c553b30d4cc6fa8360256c2285"
  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:TOUCHSCREEN_HMI"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/touchscreen-hmi.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/touchscreen-hmi"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "0-50°C ambient temperature, 20-80% relative humidity non-condensing, 100-240V AC ±10%"
    unit: "inches"
engineering_limits:
  max_safe_operating_point:
    value: 20
    unit: "°C"
    consequence: "ITO (Indium Tin Oxide) layer delamination due to coefficient of thermal expansion mismatch (ITO: 8.5×10⁻⁶/K vs glass: 9×10⁻⁶/K) causing capacitive touch failure; LCD birefringence loss below nematic-isotropic transition temperature"
fmea_matrix_quantitative:
  - node_1:
      trigger: "ESD discharge exceeding 15kV (Human Body Model) at touch surface"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Embedded diamond-like carbon coating with 10¹² Ω/sq surface resistivity and perimeter guard rings"
  - node_2:
      trigger: "Cyclic mechanical stress from 10⁶ actuations at 2N force (IPC-9504 standard)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Chemically strengthened aluminosilicate glass with 800 MPa compressive surface stress layer"
bom_nodes:
  touchscreen_display:
    type: "part"
    urn: "URN:CNFX:ME:TOUCHSCREEN_DISPLAY"
    interface_type: "physical-logic-coupled"
  controller_board:
    type: "part"
    urn: "URN:CNFX:ME:CONTROLLER_BOARD"
    interface_type: "physical-logic-coupled"
  enclosure:
    type: "component"
    urn: "URN:CNFX:ME:ENCLOSURE"
    interface_type: "physical-logic-coupled"
  mounting_bracket:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_BRACKET"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9241-420:2011 (ERGONOMICS OF HUMAN-SYSTEM INTERACTION - PART 420: SELECTION OF PHYSICAL INPUT DEVICES)"
    scope: "Verified Engineering Specification"
  - standard: "IEC 61000-6-2:2016 (ELECTROMAGNETIC COMPATIBILITY - IMMUNITY FOR INDUSTRIAL ENVIRONMENTS)"
    scope: "Verified Engineering Specification"
  - standard: "EN 60950-1:2006 (SAFETY OF INFORMATION TECHNOLOGY EQUIPMENT)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/touchscreen-hmi.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "e47d9eee5aa28c0ccca3c96b538aee9097d44c70682bf08ec5c902e820f34b7e"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Touchscreen HMI

## 1. Technical Definition
Touchscreen-based human-machine interface for controlling and monitoring the friction testing system

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-50°C ambient temperature, 20-80% relative humidity non-condensing, 100-240V AC ±10%**. Failure boundary: **LCD liquid crystal phase transition at -20°C (freezing), capacitive touch sensor failure at 85°C (glass transition temperature of ITO layer), dielectric breakdown at 500V AC**, Mechanism: **ITO (Indium Tin Oxide) layer delamination due to coefficient of thermal expansion mismatch (ITO: 8.5×10⁻⁶/K vs glass: 9×10⁻⁶/K) causing capacitive touch failure; LCD birefringence loss below nematic-isotropic transition temperature**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| ESD discharge exceeding 15kV (Human Body Model) at touch surface | 8 | ITO trace vaporization creating open circuit in touch sensor matrix | Embedded diamond-like carbon coating with 10¹² Ω/sq surface resistivity and perimeter guard rings |
| Cyclic mechanical stress from 10⁶ actuations at 2N force (IPC-9504 standard) | 8 | Microcrack propagation in cover glass (Young's modulus 70 GPa) leading to touch coordinate drift &gt;3% | Chemically strengthened aluminosilicate glass with 800 MPa compressive surface stress layer |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Touchscreen Display](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/touchscreen-display.md) `(Standalone System)`
- [Controller Board](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/controller-board.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Friction Testing System**, **Programmable Logic Controller (PLC)**, **Industrial PC**  
**Downstream Applications**: Automotive Brake Pads, Industrial Bearings, Packaging Materials  

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

### Q: What is the ingress protection rating of this HMI?
**A**: This touchscreen HMI features an IP code rating suitable for industrial environments, providing protection against dust and moisture ingress in machinery manufacturing settings.

### Q: What materials are used in the construction of this HMI?
**A**: The HMI is built with durable materials including tempered glass for the screen, polycarbonate plastic housing, an aluminum alloy frame for structural integrity, and copper touch sensors for reliable operation.

### Q: What components are included in the bill of materials?
**A**: The BOM includes a controller board, enclosure, mounting bracket, and touchscreen display, providing a complete solution for integrating this HMI into friction testing systems and other industrial equipment.

## 6. Manufacturing Compliance
- ISO 9241-420:2011 (ERGONOMICS OF HUMAN-SYSTEM INTERACTION - PART 420: SELECTION OF PHYSICAL INPUT DEVICES)
- IEC 61000-6-2:2016 (ELECTROMAGNETIC COMPATIBILITY - IMMUNITY FOR INDUSTRIAL ENVIRONMENTS)
- EN 60950-1:2006 (SAFETY OF INFORMATION TECHNOLOGY EQUIPMENT)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Touchscreen HMI](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/touchscreen-hmi)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: TOUCHSCREEN_HMI | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 0ede9fd0
