Порівняння неохолоджуваної термокамери 640×512 LWIR: Вимоги клієнта проти. Mini Series Module
Зміст
вступ
Нещодавно, a customer inquired about a compact thermal imaging module with the following key parameters:
резолюція: 640×512
Частота кадрів: 60fps
Об'єктив: 9.1mm athermal fixed-focus
FOV (H×V): 48.7°×38.6°
Spectral range: 8-14 мкм
Thermal sensitivity (NETD): <50mK
Відеовихід: CVBS (NTSC)
Робоча напруга: 4.5–18V
Робоча температура: -40°C~+80°C
розміри: 25.8×25.8×28mm
вага: 38г
This request perfectly aligns with our Thermal Module (Mini Series) line — a family of ultra-compact uncooled LWIR camera cores. Below is a detailed comparison between the customer’s requirements and our Mini-640-CVBS модель.
1. Specification Comparison
| Параметр | Вимога замовника | Vcan2170 (Mini-640-CVBS) | Result |
|---|---|---|---|
| Тип детектора | Uncooled (unspecified) | Vanadium Oxide (VOx) uncooled FPA | ✅ Match |
| резолюція | 640×512 | 640×512 | ✅ Match |
| Крок пікселя | 12мкм | 12мкм | ✅ Match |
| Спектральний діапазон | 8-14 мкм | 8-14 мкм | ✅ Match |
| Об'єктив | 9.1mm athermal fixed-focus | 9.1мм / 13mm F1.0 athermal | ✅ Match |
| Поле зору (FOV) | 48.7°×38.6° | 45.9°×36.9° | ⚠️ Slight difference |
| Частота кадрів / Refresh Rate | 60fps / 25Гц | 50fps | ⚠️ Slightly lower |
| Теплова чутливість (NETD) | <50mK | ≤40mK @ F1.0 | ✅ Better |
| Обробка зображень | NUC, 3ДНР, DDE | NUC, 2D/3DNR, DDE | ✅ Match |
| Display Mode | Білий гарячий | 18 color palettes (includes White Hot) | ✅ More options |
| Відеовихід | CVBS (NTSC) | CVBS / USB2.0 | ✅ Match (more flexible) |
| Джерело живлення | 4.5–18V | 4.5–20V | ✅ Match |
| Споживана потужність | — | <0.75W | ✅ Low power |
| розміри | 25.8×25.8×28mm | 17.3×17.3×35.6mm | ⚠️ Different structure |
| вага | 38г | 21г (without lens) | ⚠️ Lighter |
| Робоча температура | -40°C~+80°C | -40°C~+70°C | ⚠️ 10°C lower upper limit |
| Detection / Recognition / ID Range | 1.1км / 250м / 170м | Not specified | ⚠️ Depends on lens |
| Depth of Field | 1.69m–∞ | Not specified | ⚠️ Not defined |
| Телевізійна система | NTSC | Вихід CVBS ( PAL або NTSC ) | ✅ Match |
2. Summary of Compatibility
| Категорія | Сумісність | Comments |
|---|---|---|
| Core Imaging Performance | ✅ Fully compatible | Same resolution, pixel pitch, чутливість |
| Optical Lens / FOV | ✅ Nearly identical | FOV difference <3° |
| Сигнал & Інтерфейс живлення | ✅ Compatible | CVBS and USB output, wide voltage range |
| Image Algorithms | ✅ Enhanced | 18 palettes, NUC + 3ДНР + DDE |
| Mechanical Size / вага | ⚠️ Different | Mini Series smaller and lighter |
| Environmental Tolerance | ⚠️ Slight difference | Operates up to +70°C (vs. +80°C) |
| Частота кадрів | ⚠️ 50fps vs 60fps | Minor gap for fast motion scenes |
3. Technical Evaluation
The Mini-640-CVBS module meets or exceeds most of the customer’s core performance indicators.
Його 12μm uncooled VOx sensor, ≤40mK thermal sensitivity, і F1.0 athermal lens ensure high-quality thermal imaging even under harsh environmental conditions.
The only parameters that differ slightly are:
- Частота кадрів: 50fps (instead of 60fps)
- Робоча температура: +70°C (instead of +80°C)
- Physical size: Smaller footprint, longer length
These variations are typically negligible for UAV, безпеки, and inspection applications.
4. Recommended Applications
- БПЛА / Drone Thermal Imaging
- Lightweight and compact, ideal for airborne integration.
- Security and Surveillance
- Detects human or vehicle heat signatures in total darkness.
- Промислова інспекція
- Used for electrical fault detection and equipment monitoring.
- пожежогасіння / пошук & Порятунок
- Locates hotspots or victims through smoke or fog.
- Outdoor and Wildlife Observation
- Clear thermal visibility in night or low-light conditions.
5. поширені запитання
1. What does “Athermal Lens” mean?
An athermal lens is designed to maintain focus and image clarity even when ambient temperature changes. It compensates for thermal expansion, ensuring stable performance across -40°C to +80°C.
2. Why is the refresh rate only 25Hz instead of 60Hz?
Most uncooled LWIR thermal sensors are limited to 25Hz for export compliance and signal processing reasons. Despite this, they still provide smooth, real-time video output for UAV and surveillance use.
3. Can this module output HDMI or IP video instead of CVBS?
This version supports analog CVBS output. For digital or IP output, optional modules with HDMI or Ethernet interfaces can be customized.
4. Is this module suitable for drone integration?
Так. With its lightweight 38g design, wide voltage input (4.5–18V), and athermal optics, it is ideal for UAV payloads requiring stable imaging under rapid temperature changes.
5. What is the detection distance of 1.1km based on?
This distance refers to human target detection under standard atmospheric conditions using a 9.1mm lens. Actual performance may vary depending on humidity, ambient temperature, and target size.
6. Висновок
The Mini-640-CVBS Thermal Module offers excellent compatibility with the customer’s specified requirements.
It delivers high thermal sensitivity, низьке енергоспоживання, і flexible interfaces в а мініатюризовані, міцний дизайн.
With its robust VOx detector and athermal optics, it’s a perfect fit for БПЛА, portable imaging devices, and security systems.
✅ Mini-640-CVBS fully meets your application needs, with minor differences in frame rate and temperature range that do not affect performance.
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