Super Long-distance Day/Night Camera

Transcription

1 Super Long-distance Day/Night Camera Remote Photoelectric Video Monitoring System 1. Product Description Super Long Distance Day/Night Camera is frontier equipment of remote photoelectric video monitoring system. It consists of several devices, including daytime video camera, uncooled infrared imager, servo rotating platform, alarming system and lightning-proof device. It is mainly applied to monitoring targets at a real-time manner and secrete environment, especially for military application such as coast, land and air defense. The whole system employs advanced optical, electric and mechanic technologies, and uses video, infrared light to probe. The rotating platform is mountable to land, ship and helicopter. The daytime video camera and uncooled infrared imager are installed in the rotating platform with servo system. The servo system enables the rotating platform to rotate in azimuth and elevation directions, driving the daytime video camera and uncooled infrared imager to move in both directions. This rotating design allows for observing, monitoring, searching and tracing targets in the range of azimuth -170 ~+170 and elevation -45 ~+45, and in the meanwhile, return the angle signal of a target, video signal of the daytime video camera and uncooled infrared imager to the control center. When the rotating platform and other frontier devices are threatened, an alarm signal will be returned and released to warn the person whoever threatens the devices, or the control center can instead send a voice alert. 2. Structure of the Rotating Platform The video monitoring rotating platform is composed of azimuth rotating system, elevation rotating system and loading system. Each of azimuth and elevation rotating systems has an independent servo system consisting of servo motor, photoelectric encoder, rotary potentiometer switch and control circuit. The control circuit includes DSP-specific control chip, large-scale logic circuit, A/D conversion circuit and serial expanded circuit. The serial expanded circuit contains RS232 and RS422 interfaces: two channels for communicating with display and control platform, one channel for communicating with the daytime camera, and one channel for communicating with the thermal infrared imager. Figure 1 demonstrates the structure of the rotating platform and Figure 2 shows the profiles of different range types.

2 Thermal infrared imager Daytime camera Alarm device 220V 50Hz 24V Figure 1 Structure of the rotating platform Long rang Medium range Short range Figure 2 Super Long Distance Day/Night Camera: rotating platform 3. Function 1) Monitoring targets day and night for coast, land and air defense. 2) Searching, recognizing and tracing multiple objects. 3) Detecting and recognizing remains. 4) Motion detection function 5) Capability of monitoring object(s) on low altitude. 6) Receiving satellite positioning information and marking it on an electronic map. 7) Pre-reserved interfaces for connecting to other devices including frontier radar

3 and radio station. 8) Pre-reserved video and audio interfaces for connecting to other related organization. 9) Ease of operation and capability of No Person On Duty. 10) Image enhancement (image mosaics and image smoothing) and fog penetration. 11) Expandable capability. 4. Feature and Specification 4.1 Functional Distance According to the functional distance, the system is classified into three categories including short, medium and long range (Table 1). This product is designed with reliable hardware and software (optional) and can be applied to all kinds of environment. 1. Short range:during the daytime and at the visibility 2 Km, the distance to observe and recognize a target is 3 Km; at night and with simple background and without active source of illumination, the distance to observe and recognize a target is 0.75 Km. 2. Medium range:during the daytime and at the visibility 4 Km, the distance to observe and recognize a target is 6 Km; at night and with simple background and without active source of illumination, the distance to observe and recognize a target is 1 Km. 3. Long range:during the daytime and at the visibility 6.5 Km, the distance to observe and recognize a target is 10 Km; at night and with simple background and without active source of illumination, the distance to observe and recognize a target is 1.3 Km. 4.2 Dimensional Specification of the Rotating Platform Rotating platform height: 1200 mm Rotating platform net weight: 100 Kg (including load)

4 Table 1.Dimensional specification of the three categories Type Height (mm) Rotating diameter (mm) Net Weight (Kg) Functional distance to person in daytime (Km) Functional distance to person at night (Km) Short Medium Long Rotary Specification of the Rotating Platform 1) Azimuth range: -170 ~+170 2) Elevation range: -90 ~+45 3) Maximal azimuth rotary velocity: 45 /s 4) Minimal azimuth rotary velocity: 0.1 /s 5) Maximal elevation rotary velocity: 30 /s 6) Minimal elevation rotary velocity: 0.1 /s 7) Precision of regression and preset azimuth: Photoelectric Sensors Daytime Video Camera Sub-system 1. High sensitive color/monochromic camera Image sensor: 1/2 interlaced scan CCD Lens mount: C or CS Power supply: 12V DC Power: 6 W Pixels: 762 (H) 582 (V) Sensing area: 6.4 mm 4.8 mm Signal-to-noise ratio: >50dB Electronic shutter: 1/50 s to 1/ s 1) Color mode: Horizontal resolution: 480 TV lines Lowest illumination: Lux at F1.2 2) Monochromic mode: Horizontal resolution: 570 TV lines Lowest illumination: Lux at F Optical lens Focal length: variable successive range 12.5 mm~750 mm or wider Relative aperture: F3.8~3000

5 Interface: C type Control type: electric motor-driven double variable, automatic iris Dimension: 354 mm 154 mm 137 mm Uncooled Thermal Infrared Imaging Sub-system 1 set 1. Uncooled thermal infrared imager: thermal imager core uses an uncooled focal plane array (UFPA) detector. Detector: UFPA Response wavelength: 8~14 µm NETD (Noise Equivalent Temperature Difference): 0.1 (@25 ) Start-up time: 25 s (@25 ) Video output: BNC socket, analog video CCIR Power: 5W (@25 ) 2. Infrared light camera lens Focal length: 125 mm Iris: F0.95