تاریخ انتشار : چهارشنبه 29 فروردین 1403 - 11:47
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کد خبر : 208983

چگونه یک دوربین مداربسته خوب انتخاب کنیم؟

چگونه یک دوربین مداربسته خوب انتخاب کنیم؟

امنیت در دنیای امروز اهمیت بسیاری پیدا کرده است. با سرمایه‌گذاری روی سیستم نظارتی و خرید دوربین مداربسته برای خانه، محل کار و… در‌واقع، آرامش و امنیت بیشتری را برای خود خریداری کرده‌اید. تنوع بالای دوربین‌های مداربسته در بازار، انتخاب را برای افراد مشکل کرده است و در ادامه سعی کرده‌ایم که نکات لازم را

امنیت در دنیای امروز اهمیت بسیاری پیدا کرده است. با سرمایه‌گذاری روی سیستم نظارتی و خرید دوربین مداربسته برای خانه، محل کار و… در‌واقع، آرامش و امنیت بیشتری را برای خود خریداری کرده‌اید. تنوع بالای دوربین‌های مداربسته در بازار، انتخاب را برای افراد مشکل کرده است و در ادامه سعی کرده‌ایم که نکات لازم را برای انتخاب دوربین مدار بسته مناسب به شما ارائه دهیم.

راهنمای خرید دوربین مداربسته

برای خرید دوربین‌های مداربسته پیش‌از هر چیز باید نیازهای خود را در نظر داشته باشید. در اینجا، محل نصب دوربین اهمیت بسیاری دارد. برای مثال دوربین‌هایی که در فضای داخلی نصب می‌شوند، تفاوت عمده‌ای با دوربین‌های مورد‌استفاده در فضای باز دارند و باید به ویژگی‌هایی مثل دوام در برابر شرایط جوی، دید در شب، زاویه دید و… دقت داشته باشید. در ادامه به سایر نکات برای انتخاب دوربین امنیتی اشاره خواهیم کرد.

انتخاب انواع دوربین‌های مداربسته

دوربین‌های مداربسته انواع مختلفی دارند که هر‌کدام از آن‌ها برای اهداف نظارتی خاصی طراحی شده‌اند. انواع دوربین مداربسته عبارت‌اند از:

دوربین‌های دام

این نوع دوربین‌ها طراحی جمع‌و‌جور و زیبایی دارند و برای نصب در داخل خانه و سایر فضاهای داخلی و مسقف انتخاب خوبی هستند. دست‌کاری این مدل دوربین به‌دلیل محفظه گنبدی که لنز را پوشانده است، کار ساده‌ای نیست و از نفوذ گردوغبار هم محافظت می‌شود.

دوربین‌های بولت

دوربین‌های بولت بهترین انتخاب برای محیط‌های بیرونی هستند و به‌دلیل نوع طراحی روی دیوار نصب می‌شوند. فرم بلند و استوانه‌ای این مدل دوربین مداربسته، دید وسیع‌تری را فراهم کرده و فضای مناسبی را پوشش می‌دهد. 

دوربین‌های PTZ

دوربین‌های مداربسته Pan-Tolt-Zoom که به‌اختصار PTZ نامیده می‌شوند، قابلیت چرخش ۳۶۰ درجه و کنترل از راه دور را دارند و به شما این امکان را می‌دهند که لنز دوربین را حرکت دهید، زاویه آن را تغییر دهید و زوم کنید. این مدل دوربین‌ها با پوشش گسترده، انتخابی بسیار عالی برای فضاهایی مانند پارکینگ، استادیوم و دانشگاه و نظارت بر فضاهای بزرگ هستند.

دوربین‌های IP

دوربین‌های تحت شبکه یا IP داده‌ها را از طریق یک شبکه IP منتقل می‌کنند. کیفیت تصویر بالا، قابلیت‌های پیشرفته و هوشمند و امکان مشاهده تصاویر و مدیریت از راه دور به‌صورت یکپارچه، از مزایای اصلی این مدل دوربین مدار بسته است.

بیشتر بخوانید:  برای خرید یک دوربین IP خوب چقدر باید پرداخت کنید؟

دوربین‌های حرارتی

دوربین‌های حرارتی یا دوربین‌های فروسرخ، از اندازه‌گیری پرتوی برای تشخیص اشیا استفاده می‌کنند و برای کاربرد‌های خاص و به‌منظور ثبت تصویر در محیط‌های کم‌نور خریداری می‌شوند. این نوع دوربین مداربسته تصاویر را فقط بر‌اساس گرما و حرارتی که از افراد و اشیاء ساطع می‌شود، ثبت می‌کند و تصویر حرارتی ارائه می‌دهد. اگر می‌خواهید افراد و اجسام را به‌صورت واضح مشاهده کنید، باید از سایر دوربین های مدار بسته استفاده کنید.

وضوح و کیفیت تصویر

کیفیت تصویر یکی از نکات مهمی است که هنگام خرید انواع دوربین مداربسته باید در نظر داشته باشید. دوربین‌های مداربسته دارای رزولوشن‌های مختلفی هستند که بر‌حسب مگاپیکسل (MP) اندازه‌گیری می‌شوند. هرچه عدد رزولوشن بالاتر باشد، کیفیت تصویر ثبت‌شده توسط دوربین نیز بالاتر خواهد بود. دوربین‌های ۲ تا ۴ مگاپیکسلی برای نظارت عمومی کافی هستند؛ اما برای مناطق حساس بهتر است از دوربین‌هایی استفاده کنید که کیفیت تصویر بالاتری دارند. دوربین‌های ۴ تا ۸ مگاپیکسل برای این مکان‌ها انتخاب بهتری هستند.

دید در شب و نور کم

هنگام انتخاب دوربین مدار بسته برای خانه‌های مسکونی، واحدهای تجاری و… باید به وضوح تصویر آن در ساعات تاریکی هوا نیز دقت داشته باشید. دوربین‌هایی که به LED مادون قرمز مجهز هستند، تصویر سیاه‌و‌سفید در شب ارائه می‌دهند و برای نظارت بهتر در شب و ثبت تصویر رنگی در ۲۴ ساعت شبانه‌روز، بهتر است دوربین با قابلیت دید در شب رنگی بخرید.

قابلیت اتصال و ذخیره‌سازی

سیستم‌های دوربین مداربسته مدرن، گزینه‌های ارتباطی مختلفی را ارائه می‌دهند که از میان آن‌ها می‌توانیم به اتصالات سیمی، بی‌سیم و از طریق شبکه (POE) اشاره کنیم. دوربین‌های POE برای انتقال داده از کابل اینترنت استفاده می‌کنند؛ به همین دلیل نصب این دوربین‌ها بسیار ساده است.

ذخیره‌سازی تصویر نیز از‌جمله نکات مهمی است که باید هنگام انتخاب دوربین در نظر داشته باشید. انواع روش‌های ذخیره‌سازی در دوربین‌های مداربسته عبارت‌اند از:

  • سیستم ضبط ویدیوی شبکه (NVR
  • سیستم ضبط ویدیوی دیجیتال (DVR
  • سیستم ذخیره‌سازی ابری (cloud-based storage

امکان نظارت از راه دور یکی از ویژگی‌های خوب دوربین‌های مداربسته مدرن است. شما می‌توانید از طریق رایانه شخصی، تلفن همراه یا تبلت روی محل نظارت داشته باشید؛ همچنین امکان تماشای فیلم زنده از محل وجود دارد و در‌صورت بروز مشکل، اعلان هشدار به تلفن‌همراه شما ارسال می‌شود.

تجزیه و تحلیل ویدئو و ادغام با هوش مصنوعی

سیستم‌های دوربین مداربسته پیشرفته، به قابلیت‌های جدیدی مانند تجزیه و تحلیل ویدیو، تشخیص حرکت، چهره و ردیابی اشیا مجهز هستند. ادغام با هوش مصنوعی (AI) می‌تواند امنیت را تا حد زیادی افزایش داده و امکان نظارت خودکار را برای شما فراهم کند.

میزان بودجه و مقیاس‌پذیری

منظور از مقیاس‌پذیری این است که سیستم دوربین امنیتی شما قابلیت توسعه، کم یا زیاد کردن دستگاه را داشته باشد تا در آینده آن را بسته به نیاز خود بتوانید توسعه داده یا کوچک‌تر کنید؛ همچنین لازم است میزان بودجه خود را در نظر داشته باشید. هزینه‌ها شامل قیمت دوربین مداربسته، هزینه نصب، تعمیر و نگه‌داری می‌شود.

لنز دوربین و زاویه دید

انواع لنز دوربین‌های مداربسته نقش بسیار مهمی را در تعیین زاویه دید ایفا می‌کند. هرچه زاویه دید دوربین بیشتر باشد، محدوده بیشتری را تحت‌پوشش قرار می‌دهد. به‌طور‌کلی، دو نوع لنز دوربین وجود دارد:

  • لنز ثابت که یک محدوده دید ثابت را ارائه می‌دهد و قابل‌تنظیم نیست. این مدل دوربین مداربسته برای کنترل یک محدوده ثابت، به‌عنوان مثال جلوی در مغازه کوچک یا نظارت بر اتاق‌های کوچک و راهروها بهترین انتخاب هستند.
  • لنزهای وریفوکال که قابل‌تنظیم هستند و به شما امکان می‌دهند که فاصله کانونی و میدان دید را تغییر دهید. این لنزها انعطاف‌پذیری بیشتری را ارائه می‌دهند.

میدان دید دوربین

میدان دید در‌واقع، همان مسافت ارائه تصویر توسط دوربین است. اغلب دوربین‌ها فاصله‌ای حدود ۳ تا ۳۰ متر را پوشش می‌دهند. با آگاهی از میدان دید دوربین، می‌توانید محل مناسب را برای نصب آن انتخاب کنید.

درجه حفاظت ip66 و ip67

برای نصب دوربین در فضای باز، باید در نظر داشته باشید که در برابر گردوغبار و آب مقاوم باشد. درجه حفاظت با دو رقم نشان داده می‌شود؛ رقم اول نشان‌دهنده محافظت در برابر ذرات جامد است و رقم دوم میزان مقاومت در برابر آب را نشان می‌دهد. به‌عنوان مثال، دوربینی با درجه IP67 در برابر گردوغبار مقاوم است و می‌تواند غوطه‌ور شدن در آب را تحمل کند.

برند سازنده دوربین

نام برند و کیفیت هر محصولی بر قیمت آن نیز تاثیرگذار است. در بازار سیستم‌های نظارتی نیز برندهای متفاوتی اقدام به تولید دوربین‌ می‌کنند. بنابراین بهتر است به‌جای برند‌های نونیم و متفرقه، سراغ خرید دوربین مداربسته از برند‌های معتبر بروید.

سخن پایانی

انتخاب یک سیستم نظارتی مناسب، قدم اصلی برای محافظت از جان و مال شما است. در وهله اول و پیش‌از هر چیز باید نیازهای خود را در نظر داشته باشید. عواملی مانند کیفیت تصویر، امکان دید در شب، نحوه ذخیره‌سازی اطلاعات و… بر روی قیمت دوربین مدار بسته تاثیر می‌گذارند و با در نظر گرفتن آن‌ها می‌توانید بهترین انتخاب را داشته باشید. این مطلب به‌عنوان راهنمایی خوب برای انتخاب و خرید دوربین مداربسته ارائه شده است و مطالعه آن می‌تواند تصمیم‌گیری را برای شما به مراتب ساده‌تر کند.

ارسال نظر شما
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  • نظراتی که به غیر از زبان فارسی یا غیر مرتبط با خبر باشد منتشر نخواهد شد.

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