Mobil CCTV Kamera 28mm di mobil pemantauan LED definisi tinggi inframerah malam visi terbalik
CCD dan CMOS dapat dibagi menjadi dua kategori berdasarkan proses pencitraan: fast scan and slow scan It can be divided into specialized level and civilian level according to different application scenarios The common video chat cameras and various digital cameras use civilian grade dynamic and static CCD/CMOS respectively
Berbagai kamera belakang yang dipasang di mobil termasuk: kamera visi malam kamera belakang frame plat nomor reverse camera half plate frame reverse camera camera perforated camera, kamera eksternal dll
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Ada dua jenis kamera belakang: wired and wireless The wired method is simple and reliable but it requires wiring inside the vehicle body The wireless method does not require wiring inside the vehicle body and is easy to install, but requires the addition of a wireless receiving module Due to the unsatisfactory reception performance of wireless receiving modules nowadays they are more or less susceptible to interference from the usage environment Generally reverse cameras still use wired methods
Pertanyaannya adalah: Bagaimana sistem navigasi portabel tahu bahwa pengguna mundur dan segera beralih ke fungsi melihat ke belakang?
Ada tiga cara:
Metode pertama adalah yang canggung tapi juga sederhana dan dapat diandalkan yang menggunakan tombol pada navigasi portabel
Tombol tertentu dapat didefinisikan sebagai tombol switch reverse rearview Sebelum mundur pengguna menekan tombol ini dan sistem segera beralih ke mode reverse rearview Setelah mundur, press the button again and the system will switch back to its original interface This method is simple and reliable and there is no need to add anything to the extension part of the bracket But it requires manual operation and is not intelligent enough
The second method is to detect the reverse signal (a simple method is to take the control signal from the reverse light) When the user engages the reverse gear the reverse light will light up and provide a switch signal which is used to control the switch of the reverse image system This
Metode ini cukup cerdas, dengan akurasi dan stabilitas yang baik
Metode ketiga adalah untuk terus-menerus memeriksa apakah sinyal CVBS adalah valid dalam sistem navigasi tertulis untuk menentukan apakah ia mundur Saat mundur, turn on the reversing camera and the camera will send a CVBS composite video signal to the interior of PND through the bracket interface If PND detects a valid video signal it is considered to be in reverse mode This method can be considered as the most intelligent and accurate method
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