مقایسه دوربین حرارتی 640×512 LWIR خنک نشده: نیاز مشتری در مقابل. Mini Series Module
فهرست مطالب
مقدمه
اخیرا, a customer inquired about a compact thermal imaging module with the following key parameters:
Resolution: 640× 512
نرخ فریم: 60فریم در ثانیه
لنز: 9.1mm athermal fixed-focus
FOV (H×V): 48.7°×38.6°
Spectral range: 8–14μm
Thermal sensitivity (NETD): <50mK
Video output: CVBS (NTSC)
ولتاژ کاری: 4.5–18V
Operating temperature: -40°C~+80°C
Dimensions: 25.8×25.8×28mm
وزن: 38g
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 مدل.
1. Specification Comparison
| پارامتر | نیاز مشتری | Vcan2170 (Mini-640-CVBS) | Result |
|---|---|---|---|
| نوع آشکارساز | Uncooled (unspecified) | Vanadium Oxide (VOx) uncooled FPA | ✅ Match |
| Resolution | 640× 512 | 640× 512 | ✅ Match |
| Pixel Pitch | 12میکرومتر | 12میکرومتر | ✅ Match |
| محدوده طیفی | 8–14μm | 8–14μm | ✅ Match |
| لنز | 9.1mm athermal fixed-focus | 9.1میلی متر / 13mm F1.0 athermal | ✅ Match |
| میدان دید (FOV) | 48.7°×38.6° | 45.9°×36.9° | ⚠️ Slight difference |
| نرخ فریم / Refresh Rate | 60فریم در ثانیه / 25هرتز | 50فریم در ثانیه | ⚠️ Slightly lower |
| حساسیت حرارتی (NETD) | <50mK | ≤40mK @ F1.0 | ✅ Better |
| پردازش تصویر | NUC, 3DNR, DDE | NUC, 2D/3DNR, DDE | ✅ Match |
| حالت نمایش | White Hot | 18 color palettes (includes White Hot) | ✅ More options |
| خروجی ویدیو | CVBS (NTSC) | CVBS / USB2.0 | ✅ Match (more flexible) |
| منبع تغذیه | 4.5–18V | 4.5–20V | ✅ Match |
| مصرف برق | - | <0.75W | ✅ Low power |
| Dimensions | 25.8×25.8×28mm | 17.3×17.3×35.6mm | ⚠️ Different structure |
| وزن | 38g | 21g (without lens) | ⚠️ Lighter |
| دمای عملیاتی | -40°C~+80°C | -40°C~+70°C | ⚠️ 10°C lower upper limit |
| Detection / Recognition / ID Range | 1.1کیلومتر / 250متر / 170متر | Not specified | ⚠️ Depends on lens |
| Depth of Field | 1.69m–∞ | Not specified | ⚠️ Not defined |
| سیستم تلویزیون | NTSC | خروجی CVBS ( PAL or NTSC ) | ✅ Match |
2. Summary of Compatibility
| دسته بندی | سازگاری | نظرات |
|---|---|---|
| Core Imaging Performance | ✅ Fully compatible | Same resolution, pixel pitch, sensitivity |
| Optical Lens / FOV | ✅ Nearly identical | FOV difference <3درجه |
| سیگنال & رابط برق | ✅ Compatible | CVBS and USB output, wide voltage range |
| Image Algorithms | ✅ Enhanced | 18 palettes, NUC + 3DNR + DDE |
| Mechanical Size / وزن | ⚠️ Different | Mini Series smaller and lighter |
| Environmental Tolerance | ⚠️ Slight difference | Operates up to +70°C (در مقابل. +80درجه سانتی گراد) |
| نرخ فریم | ⚠️ 50fps vs 60fps | Minor gap for fast motion scenes |
3. Technical Evaluation
این Mini-640-CVBS module meets or exceeds most of the customer’s core performance indicators.
آن 12μm uncooled VOx sensor, ≤40mK thermal sensitivity, و F1.0 athermal lens ensure high-quality thermal imaging even under harsh environmental conditions.
The only parameters that differ slightly are:
- نرخ فریم: 50فریم در ثانیه (instead of 60fps)
- Operating temperature: +70درجه سانتی گراد (instead of +80°C)
- Physical size: Smaller footprint, longer length
These variations are typically negligible for UAV, امنیت, and inspection applications.
4. Recommended Applications
- UAV / Drone Thermal Imaging
- Lightweight and compact, ideal for airborne integration.
- Security and Surveillance
- Detects human or vehicle heat signatures in total darkness.
- بازرسی صنعتی
- Used for electrical fault detection and equipment monitoring.
- آتش نشانی / جستجو کردن & نجات
- Locates hotspots or victims through smoke or fog.
- Outdoor and Wildlife Observation
- Clear thermal visibility in night or low-light conditions.
5. سوالات متداول
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?
بله. 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. نتیجه گیری
این Mini-640-CVBS Thermal Module offers excellent compatibility with the customer’s specified requirements.
It delivers high thermal sensitivity, مصرف برق کم, و flexible interfaces in a مینیاتوری شده, طراحی ناهموار.
With its robust VOx detector and athermal optics, it’s a perfect fit for پهپادها, 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.
سوال بپرسید
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