kualitas Perekam Kamera Kendaraan & Kamera kendaraan AHD produsen

Informasi dasarNama CinaKamera mobilfungsiFungsi presentasi video dan audioefekPenanganan kecelakaan lalu lintas memberikan dasar yang lebih ilmiahkatalog1 Fungsi2 Kinerja3 lensa4 Prinsip kerja5 Persyaratan Pemasangan   fungsi1. Memberikan bukti yang dapat diandalkan untuk analisis dan penilaian kecelakaan lalu lintas2. Mudah bagi pengemudi dan penumpang untuk memeriksa kondisi di dalam mobil3. Menyediakan dasar untuk menangani perselisihan barang hilang dan ditemukan, pencegahan pencurian dan masalah lainnya di antara penumpang di kendaraan4. Memastikan pemantauan lingkungan dalam dan luar kendaraan untuk memastikan keselamatan pengoperasian kendaraanmelipat   kinerjaApa jenis kamera mobil yang baik? Kinerja kamera mobil dipasang dapat dievaluasi dari aspek berikut1 、 KripikCCD and CMOS chips are important components of the reverse camera which can be divided into CCD and CMOS according to their different components CMOS is mainly used in products with lower image quality Its advantages are lower manufacturing cost and power consumption compared to CCD but its disadvantage is that CMOS cameras have higher requirements for light sources CCD is a high - end technology component used in photography and videography which also comes with a video capture card CCD and CMOS have a significant difference in technology and performance Generally speaking CCD has better performance but it is also more expensive It is recommended to choose a CCD camera without considering the cost   2 、 KejelasanClarity is one of the important indicators for measuring cameras Generally speaking products with high clarity will have better image quality Products with a clarity of 420 lines have become the mainstream product for reverse cameras while products with a clarity of 380 lines can also be chosen if well tuned There are better chips such as 480 wire 600 wire 700 wire etc However depending on the chip level of each camera the level of photosensitive components including the level of debugging technicians products of the same chip and grade may present different quality effects It also depends on what kind of lens is used, dan lensa yang terbuat dari bahan yang baik akan memiliki efek presentasi gambar yang jauh lebih baik Sebaliknya produk definisi tinggi akan memiliki beberapa diskon pada efek penglihatan malam   3 、 Penglihatan malamEfek penglihatan malam terkait dengan kejelasan produk Semakin tinggi kejelasan semakin buruk efek penglihatan malam produk Ini karena chip itu sendiri Namun, high - quality products have night vision function and do not produce image effects on objects Although the color may be slightly different clarity is not a problem If there is infrared night vision fill or LED white light fill night vision will be clearer and more visible   4 、 WaterproofingSebagian besar produk kamera belakang memiliki fungsi tahan airUntuk meringkas ketika memilih kamera belakang kita harus mempertimbangkan aspek di atas dan yang paling penting adalah untuk melihat dan membandingkan efek sebenarnya gambar   5 、 Kamera mundur khusus untuk kendaraan khususMany cars have already produced specialized reverse cameras that can be used with over 500 models When choosing be sure to first choose your own model specific reverse camera If not then choose a universal reverse camera   6 、 Kamera universalKamera tujuan umum termasuk 18.5mm perforated cameras small butterfly external cameras license plate frame cameras 28mm perforated cameras bus cameras and other external cameras such as LED night vision color external cameras for car navigators   lensa Lensa kamera mobil dipasang adalah komponen inti dan empat parameter kunci adalah sebagai berikut Jarak fokus lipatThe size of the focal length determines the size of the field of view angle When the focal length value is small the field of view angle is large and the observed range is also large but the resolution of distant objects is not very clear The focal length value is large the field of view angle is small and the observation range is small As long as the focal length is selected appropriately even distant objects can be seen clearly Due to the one - to - one correspondence between focal length and field of view angle a determined focal length means a determined field of view angle Therefore when selecting a lens focal length it is important to fully consider whether the observation details are important or whether a large observation range is important If you want to see details choose a long focal length lens If you are watching close - up scenes choose a wide - angle lens with a small focal length   Koefisien aperture lipat   Aliran cahaya yang diwakili oleh F diukur dengan rasio jarak fokus lensa f terhadap aperture D Setiap lensa diberi label dengan nilai F maksimum misalnya 6mm / F1.4 mewakili aperture maksimum 4 . 29 millimeters The luminous flux is inversely proportional to the square of the F - value and the smaller the F - value the greater the luminous flux The scale values of the aperture index sequence on the lens are 1.4 2 2.8 4 5.6 8 11 16 22 etc The pattern is that the exposure amount at the previous scale value is exactly twice that of the corresponding exposure amount at the latter scale value That is to say the aperture of the lens is 1 / 1.4 1 / 2 1 / 2.8 1 / 4 1 / 5.6 1 / 8 1 / 11 1 / 16 1 / 22 respectively The former value is twice the root of the latter value Therefore the smaller the aperture index the larger the aperture and the greater the illumination on the imaging target surface In addition the aperture of the lens can be divided into manual IRIS and automatic IRIS When used in conjunction with a camera manual aperture is suitable for situations where there is not much change in brightness Its light intake is adjusted through the aperture ring on the lens until it is suitable in one go The automatic aperture lens will automatically adjust according to the changes in light and is used in outdoor entrance and other places with large and frequent light changes   Lensa iris otomatisLensa aperture otomatis dibagi menjadi dua kategori: one is called video (VIDEO) drive type and the lens itself contains an amplifier circuit to convert the video amplitude signal transmitted by the camera into control of the aperture motor Another type is called DC drive type which uses the DC voltage on the camera to directly control the aperture This type of lens only includes an ammeter type aperture motor and requires an amplifier circuit inside the camera For various types of automatic aperture lenses there are usually two adjustable knobs One is the ALC adjustment (metering adjustment) which has two options peak metering and average metering based on target lighting conditions Generally the average metering level is taken Another is LEVEL adjustment (sensitivity) which can make the output image bright or dim   Lensa zoom lipatAda dua jenis lensa zoom: manual zoom lenses and electric zoom lenses Manual zoom lenses are generally used for scientific research projects rather than in closed - loop monitoring systems When monitoring large scenes the camera usually needs to be used in conjunction with an electric lens and pan tilt The advantage of an electric lens is that it has a large zoom range which allows for viewing a wide range of situations and focusing on certain details In addition the pan tilt can rotate up down left and right resulting in a very large viewing range Electric lenses have multiple magnifications such as 6x 10x 15x 20x etc If you know the reference focal length you can determine the variable range of the lens focal length For example a 6x electric lens with a reference focal length of 8 . 5 milimeter akan memiliki rentang zoom yang dapat disesuaikan secara terus menerus dari 8,5 hingga 51 milimeter dan sudut pandang 31,3 hingga 5.5 degrees The control voltage of electric lenses is generally 8V ~ 16V DC with a maximum current of 30mA So when selecting a controller it is important to fully consider the length of the transmission cable If the distance is too far the voltage drop generated by the line will cause the lens to be uncontrollable Therefore it is necessary to increase the input control voltage or replace the video matrix host with a decoder for controlSelain empat item di atas pasti ada pengetahuan kecil lainnya tetapi menguasai empat koefisien indikator ini dapat cocok untuk konfigurasi dan aplikasi dari lensa   prinsip operasionalThe camera power is connected to the reverse taillights When reverse gear is engaged the camera synchronizes power supply and enters the working state The collected video information is sent to the wireless receiver located at the front of the car through the wireless transmitter The receiver transmits the video information to the GPS navigator through the AV IN interface This way when the receiver receives the signal regardless of whether the Gps navigator is in any operating interface We will prioritize providing LCD screens for reverse image videos   The difference between the use of car mounted cameras car mounted displays and car mounted DVD navigation systems as well as portable GPS navigation systems is that when using car mounted displays the car mounted displays do not need to be turned on As long as reverse gear is engaged the car mounted displays will automatically display the image of the car mounted camera The car DVD navigation can only display the car camera image under normal startup conditions When using a portable GPS navigation system it is necessary to turn on the navigation system before displaying the car camera image   Lima. Because the industry of in car cameras has just started customers initially did not have high requirements for this color and the price of color is also relatively expensive However with the development of technology color cameras will also become more and more widespread   Biaya instalasi bus terutama mencakup aspek berikut: host cost camera cost hard drive cable installation cost The price of different host equipment varies and the price of different camera quantities also varies The host price in the market itself varies greatly  

Persyaratan pemasangan kamera on-board persyaratan sistemImplementasi sistem pemantauan kendaraan transportasi umum perkotaan membutuhkan persyaratan sistem berikut:1Pemantauan waktu nyata: Memantau situasi mengemudi kendaraan angkutan umum dan merekam bagian dalam dan luar kendaraan.2Perlindungan keselamatan: Ketika kecelakaan bus terjadi, sistem secara otomatis mencatat informasi yang relevan dan secara proaktif membunyikan alarm jika terjadi keadaan darurat.3Analisis data: Analisis cepat lintasan mengemudi dan perilaku kendaraan untuk meningkatkan efisiensi mengemudi.implementasi sistemBerikut adalah langkah-langkah implementasi khusus untuk sistem pemantauan kendaraan transportasi umum perkotaan:4- Pasang kamera.Pemasangan kamera adalah langkah pertama dalam sistem pemantauan bus perkotaan, dan lokasi pemasangan kamera juga merupakan faktor penting yang mempengaruhi efek pemantauan.kamera harus dipasang di bagian atas gerbong untuk menutupi seluruh gerbong dan menangkap data seperti kecepatan kendaraan, akselerasi, dan perubahan akselerasi. pada saat yang sama, perlu untuk membangun kerangka keseluruhan kamera untuk mencegahnya dari longgar selama mengemudi jalan,sehingga mempengaruhi transmisi sinyal pemantauan kendaraan.2. Koneksi perangkat kerasSetelah membangun sistem pemantauan bus perkotaan, perlu untuk membangun platform untuk pengumpulan dan penyimpanan data.Perangkat lunak analisis, dan tampilan. Perangkat ini sering membutuhkan penggunaan beberapa antarmuka yang berbeda, dan transmisi data yang sesuai juga bergantung pada protokol transmisi yang berbeda.perlu untuk memastikan bahwa semua perangkat dapat secara efektif terhubung ke server pusat untuk menyimpan data secara tepat waktu dan efektif.3. Pengembangan perangkat lunakPengembangan perangkat lunak adalah salah satu bagian yang paling penting dari pembangunan sistem pemantauan bus perkotaan.diperlukan untuk mengembangkan aplikasi perangkat lunak sesuai dengan persyaratan fungsional tertentuDi antaranya, aplikasi pengumpulan data real-time dapat mengumpulkan data tentang lokasi kendaraan, kecepatan, suhu, dan kondisi keamanan internal gerobak.Aplikasi enkripsi data dapat mengenkripsi dan mengirimkan informasi sensitif untuk mencegah kebocoran informasi.4. Pengolahan dataKarena banyaknya kendaraan angkutan umum perkotaan, perlu untuk memproses dan mengintegrasikan data yang dikumpulkan.untuk cepat mengidentifikasi situasi abnormal atau kerusakan kendaraanNamun, perhatian harus diberikan pada masalah berbagi informasi kendaraan. Tidak diizinkan untuk mengungkapkan informasi mengemudi kendaraan kepada publik,dan perlu untuk sepenuhnya melindungi informasi operasi kendaraan.5. Pembebasan informasiAkhirnya, bagi masyarakat, kemampuan untuk mengetahui lokasi kendaraan secara real-time secara tepat waktu berarti bahwa penumpang dapat menggunakan transportasi umum dengan lebih nyaman.kita dapat mengatur "real-time monitoring kendaraan operasi layar atau menggunakan perangkat lunak operasi kendaraan di stasiun atau tempat umum, sehingga penumpang dapat memperoleh informasi bus secara real time.RingkasanPembangunan sistem pemantauan bus perkotaan dapat sangat meningkatkan keamanan dan koordinasi operasi bus.situasi abnormal dapat dengan cepat diidentifikasi, dan informasi kendaraan dapat dianalisis untuk meningkatkan efisiensi mengemudi kendaraan.perlu untuk menerapkan dan mengembangkan rencana di atas sesuai dengan kebutuhan dan kondisi khusus