January 15, 2024
기본 정보
중국어 이름
자동차에 장착된 카메라
기능
비디오 및 오디오를 제시하는 기능
효과
교통사고 처리는 보다 과학적인 근거를 제공합니다
카탈로그
1 기능
2 성능
3개의 렌즈
4 작동 원리
5 설치 요구 사항
기능
1 교통사고의 분석 및 판단을 위한 신뢰할 수 있는 증거를 제공
2, 운전자와 승객이 차량 내부 상태를 확인하기 편리합니다
3. 차량에 탑승하는 승객들 사이에서 발견 및 손실 물품, 도난 예방 및 기타 분쟁을 처리할 수 있는 근거를 제공
4, 차량 운행의 안전성 확보를 위하여 운송물의 내부 및 외부 환경의 모니터링을 실시한다
접는
성능
어떤 종류의 자동차 카메라가 좋습니까? 자동차에 장착된 카메라의 성능을 다음 측면에서 평가 할 수 있습니다.
1 、 칩
CCD 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 、 명확성
Clarity 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, 그리고 좋은 재료로 만든 렌즈는 훨씬 더 나은 이미지 프레젠테이션 효과를 가질 것입니다. 반대로 고화질 제품은 야간 시력 효과에 약간의 할인 할 수 있습니다.
3 、 야간 시력
야간 시력 효과는 제품의 명확성과 관련이 있습니다. 명확성이 높을수록 제품의 야간 시력 효과는 더 나빠집니다. 이것은 칩 자체 때문입니다. 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 、 방수
대부분의 리버스 카메라 제품은 방수 기능이 있습니다.
요약 할 때 역 카메라를 선택할 때 우리는 위의 측면을 고려해야하고 가장 중요한 것은 실제 효과를보고 비교하는 것입니다.
5 、 특수 차량용 전용 후퇴 카메라
Many 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 、 유니버설 카메라
일반용 카메라에는 18개가 포함됩니다.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
렌즈
자동차에 장착 된 카메라의 렌즈는 핵심 구성 요소이며 네 가지 주요 매개 변수는 다음과 같습니다
접는 초점 거리
The 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
접는 오프레이션 계수
F로 표시된 빛 흐름은 렌즈의 초점 거리 f와 개도 D의 비율로 측정됩니다. 각 렌즈는 최대 F 값으로 표시됩니다. 예를 들어 6mm / F1입니다.4은 최대 개도 4입니다.. 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 56 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 / 10.4 1 / 2 1 / 2.8 1 / 4 1 / 56 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
자동 아이리스 렌즈
자동 개도 렌즈는 두 가지 범주로 나뉘어 있습니다: 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
접는 줌 렌즈
줌 렌즈에는 두 가지 종류가 있습니다: 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 . 5mm는 8.5에서 51mm의 연속 조정 가능한 확대 범위와 31.3에서 5의 시야 각을 가질 것입니다.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 control
위의 네 가지 항목 외에도 확실히 다른 작은 지식이 있지만이 네 가지 지표 계수를 마스터하는 것은 렌즈의 구성과 응용에 적합 할 수 있습니다.
운영 원칙
The 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
5개 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
6, 버스 설치 비용은 주로 다음의 측면을 포함합니다: 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
