Communication command vehicle is mainly used in the field of public emergency command, complete the communication and information remote transmission.
One, standard configuration function
(1) at the same time receive 2 road wireless image signal.
(2) the car equipment bus control flight reservation and telephoto camera system implement local closed-circuit monitoring. Intake of the video signal can access intelligent exchange control equipment switching;
(3) recording and video;
(4) the public network and transmission. The computer image acquisition of data, voice data and documents can be in computer editor, through the wireless transmission system and directly sent to command center, also can receive from the command center and from;
(5) the surveillance area mobile alarm;
(6) can be added with car audio mails machine, audio and video data through the transmission network forward to command center.
Two, the system design
The system is composed of carrier car, the core of computer, intelligent switching control system, video receiving set, field monitoring system, day feed system, power system, peripherals and recording equipment (DVR), image forward equipment, cabinets, etc. System assembly conform to the electromagnetic compatibility requirements.
(1) equipment carrier
Modified car as communication command platform carrier is more suitable, wire and cable embedded in the car.
Camera unit and yuntai using suspension way, seat number bus control.
(2) the core of computer is a laptop computer, all the control through the computer.
(3) intelligent exchange control equipment core is an 8 x8 of audio switcher, all input of audio signal through this machine can be output to the specified port, can record, monitor or forwarding.
(4) video receiving the point frequency mode. Point frequency receiving can add in antenna amplifier and channel filter, increase the antenna gain, and can resist other frequency interference, in order to get a good reception.
(5) system equipment COFDM forward equipment, used for image forward. In the complex environment to realize high quality digital image transmission, thus real-time will communication command vehicle video signals back to the command center, make the command center in the first time to master the site condition.
(6) vehicle power supply system to provide all of the on-board equipment of electric power supply. Equipped with a large capacity storage battery to ensure the equipment working for a long time. Computer and other 220 v power supply equipment power by power inverter supply. The car is equipped with 12 v intelligent three phase charger.
(7) peripherals and recording equipment mainly depends on the user use convenient. This system through the hard disk video recorder and notebook can also record visual, audio signal.
(8) the main equipment structure using standard frame type, equipment use case installed in the bottom, and display control part and need manual use peripherals in mesa.
According to the selected model vehicle manufacturers to provide the model of the vehicle's bearing quality parameter set up loading engineering theory model, the vehicle in the reform to strengthen the frame and the key equipment vibration reduction measures, in order to check the vehicle industrial vehicle dynamic stability.
Three, the structure
The equipment layout (in BUCK GL8 cars for example)
In order to meet the vehicle's weight requirements, the main work station in the middle, and vehicle battery and charging equipment is located in the car. Due to the seat and control table all can and sliding, and may, according to the need to compose the most reasonable space layout.
The equipment layout:
Four, performance parameters and technical indicators
(1) color video camera (MTV - 64 g2dhp)
| TV system: | PAL | |
| Image sensor: | 1/4 inch CCD image sensor | |
| CCD total pixel: | 795 (horizontal) X 596 (vertical) | |
| Scanning system: | 625 line, fifty pixel/SEC | |
| Synchronization system: | the synchronization | |
|
Minimum illumination |
traditional mode: | 1.5 Lux of F1.2 |
| Star mode: | 0.002 Lux of F1.2 | |
| Horizontal resolution: | 480 line / 580 line (digital signal enhancement processing) | |
| SNR: | 52 db (min)/60 db (max) (automatic gain control closed) | |
| Auto aperture: | automatic electronic shutter/dc drive | |
| Auto electronic shutter: | 1/50~1/100,000 seconds continuous | |
| Lens and perspectives: | Canon 22 times optical magnification lens,F1.6~3.7,f=4.0~88mm | |
| Amplification function: | 220 times (22 times optical amplification ten times digital amplification) | |
| Location: | 64 group position (amplifier, focusing) | |
| Focus: | auto/manual | |
| Video output: | composite video signal output, 1.0 V P - P at 75 ohm | |
| Gamma correction: | 0.45 | |
| Auto gain control: | auto gain control (18db max) | |
| Backlight compensation: | auto (18db max) | |
| Mirror strengthen function: | from screen menu selection control | |
| Reticle happen function: | ON/OFF the screen menu display | |
| Computer interface control: | DRY SWITCH ,RS-232C (DRIVE OPTION) | |
| Working temperature: | -20°C ~ 50°C | |
| Working humidity: | 85%RH below | |
| Power supply: | DC12V ± 1V/3.6W(max) | |
(2) the black and white camera: (model WAT - 902 h)
Resolution: 570 TVL
Minimum illumination: 0.0003 Lx F1.4 (AGC High)
Electric zoom lens: C, 6 x 8 - mm F1.2, 3 motor
(3) LCD display:
Screen size: 17 inches
Display scale:"
(4) audio switch matrix
Matrix: 8 x8;
Audio interface impedance: 600 Ω;
Video interface impedance: 75 Ω;
(5) video record: hard disk video recorder
Color: PAL and NTSC;
Video input: level: 1.0 Vp - p, impedance: 75 Ω;
Video output: level: 1.0 Vp - p, impedance: 75 Ω;
Video compression standard: h. 264;
16 k ~ 2 m adjustable, can also customize (unit: BPS);
Audio input: linear level, impedance: 1 k Ω;
Audio output: linear level, impedance: 600 Ω;
Audio compression standard: OggVorbis;
Audio pressure
