GB/T 41997.3-2022 in English
VALIDElectrical safety of machinery—Vision based electro-sensitive protective equipment—Part 3: Particular requirements for devices using stereo vision techniques
- Issued on:2022-10-12
- Implemented on:2023-05-01
- File Format:PDF
- Delivery:Via email within 5 business days
$534.00
| Standard No: | GB/T 41997.3-2022 |
| Document status: | VALID |
| Title in English: | Electrical safety of machinery—Vision based electro-sensitive protective equipment—Part 3: Particular requirements for devices using stereo vision techniques |
| Title in Chinese: | 机械电气安全 基于视觉的电敏保护设备 第3部分：采用立体视觉保护器件特殊要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2022-10-12 |
| Implemented on: | 2023-05-01 |
| ICS Classification: | 29.020-Electrical engineering in general |
| Chinese Classification: | K09-Hygiene, safety and labor protection |
| Professional Classification: | GB-National Standard |
| Related Keywords: | radiation safety requirements
technical requirements stereoscopic base design particular requirements stereo vision techniques introduction analysis standard technical elementsspecial requirements |
| Related Topics: | vision
Electrosensitive protective equipment Electrosensitive equipment stereo vision Test stereo vision GB/T 41997.3 GB/T 41997.3-2022 Mechanical safety photoelectric protection |
《GB/T 41997.3-2022机械电气安全 基于视觉的电敏保护设备 第3部分：采用立体视觉保护器件特殊要求》由TC231（全国工业机械电气系统标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
Analysis of the core content of the standard
| Technical elements | Special requirements for stereoscopic vision | Comparison of general standards |
|---|---|---|
| Detection principle | Stereoscopic parallax ranging | Monocular reference mode |
| Working wavelength | 400-1500nm | Unlimited |
| Detection probability | (1-2.9)×10-7 | 1×10-6 |
Key technical requirements
Stereoscopic base design: The spacing between fixed imaging devices is required to be ≥ 4 times the minimum detection distance to ensure depth measurement accuracy. Baseline stability requirements must be met when using a dual camera system.
Environmental anti-interference: It must maintain normal operation within the illumination range of 100-1500lx and pass 7 types of light source interference verification such as incandescent lamps and laser beams (see standard 5.4.6 for details).
Implementation recommendations
- The detection area setting should include a tolerance zone (STZ+PTZ), and it is recommended that the boundary be expanded to a 5σ error range
- Special chessboard/grid tests are required for periodic structural backgrounds (Figure 3)
- The optical window contamination monitoring cycle shall not exceed 168 hours
Technology evolution analysis
This standard incorporates stereo vision algorithms into the safety protection system for the first time. Compared with the 2017 version of the monocular solution:
- Position accuracy is improved by 3 times (200mm range)
- Radiation safety requirements for new pattern projection technology (PAPT)
- Introduction of a probabilistic detection capability assessment model
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