Specifications for DRIVER S REAR VIEW CAMERA August 2001 Sekai Electronics Inc. 13570 Larwin Circle Santa Fe Springs CA-90670 U.S.A.
General Description Introduction A camera system designed to assist the driver when backing up (reversing) the vehicle. The camera unit mounts at the far back of the vehicle providing an unobstructed view of the surrounding. To give the driver a familiar view the camera provides a picture that is reversed, imitating what is seen in a rear view mirror. Additional assistance is given by the symbology superimposed onto the picture illustrating the vehicle width at different distances, telling the driver how close a possible obstruction is, and if it is in the vehicle path. The picture from the camera can be displayed on a standard video monitor (CCIR or EIA type). A door mechanism protects the camera from mud and dust when it is not in use. The door can be electrically activated either by manual control or automatically when the driver put the vehicle in reverse. The system consists of two line replaceable units (LRU), one camera unit (RVC-01) mounted on the outside of the vehicle and a power supply / symbology generator (MBC- 108BA). RVC-01 Camera installed on Hägglunds CV-9030 Page 2 of 10
Mechanical Interface The RVC-01 is mounted to the vehicle by four bolts; see the attached drawing for detailed configuration. As the camera is a fully external unit, only a minimum of modification to the vehicle is required, limited to cable feed-throughs and installation of mounting bolts. The camera has to be installed in a position that gives it an unobstructed rear view. The MBC-108BA can be installed where space is available inside the vehicle, but preferably in close proximity to the camera. See attached drawing for detailed configuration of the control box. Electrical Interface In the current version all connectors are of military type D38999 series III. RVC-01 The Camera unit has two electrical interfaces with separate connectors: No. Function Connector type J1 Video camera interface D38999/20WA35PN J2 Motor door interface D38999/20WA98PN Pin Configuration J1 1 +12VDC 2 12VDC return 3 Spare 4 Video Signal 5 Video Signal Return 6 Spare Pin Configuration J2 A +28V B +28V return C +28V / 0V (+28V =Open hatch, 0V=Close hatch) MBC-108BA The MBC-108BA has three electrical interfaces with separate connectors: No. Function Connector type J1 Vehicle 28VDC power input D38999/24WA98PN J2 Video camera interface D38999/24WB35SA J3 Video output interface D38999/24WC26SB Page 3 of 10
Pin Configuration J1 A +28VDC B 28VDC return Pin Configuration J2 1 Camera Day +12VDC 2 Camera Day 12VDC Return 3 Video In 4 Video Return 5 Reserved for Heater 6 Reserved for Heater 7-13 n.c. Pin Configuration J3 1 Video Out / Return (Coaxial) 2 n.c. A Reserved B Reserved C n.c. D n.c. E Cable presence check F Cable presence check Field of regard The rear view camera shall be installed in a fixed position hard mounted to the vehicle. It is recommended that the installation be made so that the elevation can be adjusted during the first setup, allowing for calibration of the distance scale. Sensor The system has a Monochrome Inter-line type 1/3 CCD Image Sensor, utilizing COTS technology. Available in either CCIR or EIA format offering 512H x 582V or 512H x 492V effective picture elements respectively. The minimum object illumination producing a useful image is 0.05 Lux (50 IRE). Exposure is controlled by electronic shutter, eliminating the need for moving parts inside the camera lens. Optics With an f= 3.8 mm lens (F 2.0) the resulting field of view (FOV) of the system is 72 Horizontal and 54 Vertical. This very wide field of view is selected to allow the driver to see objects that are close to the vehicle and to the side. Page 4 of 10
Volume constraints Armor cut out The camera unit is fully external; the only armor cut out required is provisions for connectors to camera and motor door. Below armor The integrator can install the power supply / symbology generator (MBC-108BA), wherever suitable inside the vehicle. Reverse Scan By reverse scanning the CCD sensor the camera provides an inverted (mirrored) picture on a standard monitor. A reversed image is necessary as drivers are generally trained to back up a vehicle by looking in a rear view mirror and this habit is hard to change. The advantage to incorporate this feature in the camera instead of in the monitor is that the same monitor also can be used for applications other than the rear view camera. Object distance markings The system is designed to help the driver to detect obstacles that are near area the rear of vehicle, to avoid collisions and simplify navigation when backing up. A symbology generator superimposes a pattern onto the video signal representing the vehicle width at different distances (see picture). The lines in the bottom part of the picture are the 3- meter mark used to calibrate the elevation of the camera during installation. Symbols show the vehicle path (the width of the vehicle) at different distances, in this case 5, 10 and 15 meters behind the vehicle. The pattern can be customized to fit the requirements and preferences of the customer. Rear view picture with symbology (simulated) Page 5 of 10
Display Any monochrome or color video display can be used, please specify if a CCIR or EIA signal is preferred. Camera video signal output is 1.0V p-p, Composite Video according to CCIR or EIA (specify at the time of order) Dynamic Range The camera system has a dynamic range better than 80 db, corresponding to 26 F-stops. Environmental Conditions High Temperature For outside installations: MIL-STD 810E, method 501, procedure II, Operation at a constant temperature of +60 C for 16h (Function During, FD) For inside installations: MIL-STD810E, method 501, procedure II, Operation at a constant temperature if +50 C for 24h (Function During, FD) Storage: MIL-STD810E, method 501, procedure I, Storage at a constant temperature of +71 C for 24h (Function After, FA) Low Temperature The rear view camera system shall meet requirements when subjected to MIL-STD810E, method 502, Low Temperature Procedure II, Operation at a constant temperature of -40 C for 24h (FD) Procedure I, Storage at a constant temperature of -46 C for 24h (FA) Temperature Shock The rear view camera system shall meet requirements when subjected to MIL-STD810E, method 503.3, Temperature Shock, between -40 C and +50 C; Temperature change 5 cycles x 12h (FA) Temperature Change The rear view camera system shall meet requirements when subjected to IEC 68-2-14, Nb, between -40 C and +50 C; 1 C/min (FD). Page 6 of 10
Water Jet The camera shall meet requirements of IEC 529, (FD), Ipx6, C. (100 l/min) Humidity The camera shall meet requirements of IEC 60068-2-30, Db, +25 C to +55 C, RH>95%, 6 cycles x 24h (FA) Sand and Dust MIL-STD-810E, method 510.3, Procedure I (FA). Vibration MIL-STD-810C, proc VIII, curve W, 2 axes x 3 hrs Vertical axis (proprietary) levels exceeding curve W, 64 hrs Shock MIL-STD-810C, method 516, Proc I, 30g ±3 directions Page 7 of 10
Electromagnetic Compatibility (EMC) Resistance to Radiated Interference MIL-STD461C, part 4 & MIL-STD462, Ground Applications Army: RS02 (FD) RS03 (FD), 50V/m, 14kHz-10GHz, according to MIL-STD462 Resistance to Conducted interference Applicable to power supply leads to/from the product or sub-units. MIL-STD461C, part 4 & MIL-STD462, Ground Applications Army: CS01 (FD) CS02 (FD) CS06 (FD) CS11, 10A @ 20, 40, 60, 70, 80, 100 MHz Generated Radiated Emission Applicable for the Product or Sub-unit incl. Cable harnesses. MIL-STD461C, part 4 & MIL-STD462, Ground Applications Army: RE02 (FD) Generated Conducted Emission Applicable to power supply leads to/from the Product or Sub-units. MIL-STD461C, part 4 & MIL-STD462, Ground Applications Army: CE01 (FD) 30Hz 15kHz CE03 (FD) 15kHz 100MHz Resistance to interference in power supply system The electric system shall be tested in accordance with applicable parts of MIL-STD- 1275A (AT) excluding alternator mode (FD) Page 8 of 10
Power Supply / Symbology Generator MBC-108BA Page 9 of 10
Rear View Camera RVC-01 Page 10 of 10