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IIT Camera System Manual

16

Installation Preparation

Figure 6.

Typical Over Lane Site Layout Plan

The Light Sensor and Flash shown in Figure 6 are optional.

If over lane mounting is not possible the camera can be mounted at the side of the road as close to

the road as possible.

2.2

Performance of Trigger and Light Sensor function

As mentioned in section 2.1.1 the performance of the camera is dependent on respecting

installation parameters. These performance conditions have influence on both the trigger and the
light sensor function.

Various weather caused conditions may also influence the performance. A wet license plate has less
retro-reflectance than a dry one and the same applies if it is covered with dirt or snow. Some

license plates have reduced retro-reflectance due to wear and tear.

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Содержание IIT Camera Systems VIS-CAM 350

Страница 1: ...IIT Camera Systems In Image Triggering Cameras VIS CAM 350 IIT VIS CAM 400 IIT Document Version A Document P N 10657 ...

Страница 2: ......

Страница 3: ...repair Certifications CE Compliance The VIS CAM 350 IIT and VIS CAM 400 IIT have been certified to conform to the requirements of Council Directive 89 336 EC for electromagnetic compatibility and to comply with the following European Standards Emissions EN 55022A 1998 A1 2000 A2 2003 Immunity EN 55024 1998 A1 2001 A2 2003 All JAI products bearing the CE mark have been declared to be in conformance...

Страница 4: ...rty responsible for FCC compliance could void the user s authority to operate the equipment VIS CAM System Installation Manual JAI Inc 625 River Oaks Parkway San Jose CA 95134 Tel 408 383 0300 Tel 800 445 5444 Fax 408 383 0301 E mail trafficsales americas jai com trafficsales emea jai com www jai com December 10 2008 ...

Страница 5: ...Camera Housing 18 3 2 2 Attaching the Safety Tether 19 3 2 3 Cable Connections 20 3 3 Connection to J Panel and Power Supply 22 3 4 Flash 23 4 System Set Up 24 4 1 Properties setup when using built in Light Sensor 25 4 2 Properties setup when using External Light Sensor 26 4 3 Settings for built in Automatic License Plate Reader ALPR 28 4 3 1 ALPR Parameters 28 4 3 2 ENSetup Image and LPR output C...

Страница 6: ...IIT Camera System Manual vi Table of Contents ...

Страница 7: ...mera 25 Figure 16 Select Manual Control in the Camera ADR Control 25 Figure 17 Set the value to 1 50 by manually typing the value 26 Figure 18 Trigger Selection 26 Figure 19 Select Falling Edge in the Trigger Edge Select field 27 Figure 20 Select Camera ADR Control using Light Sensor in the Camera ADR Control 27 Figure 21 Set the Light Sensor IP address 27 Figure 22 Set the value to 1 50 by manual...

Страница 8: ...IIT Camera System Manual viii List of Figures ...

Страница 9: ...List of Tables ix IIT Camera System Manual List of Tables Table 1 Electrical Connections for the IIT Camera X2 connector 22 ...

Страница 10: ...IIT Camera System Manual x List of Tables ...

Страница 11: ...camera gain pedestal and exposure time based on scene light condition Grabbing the picture Reading the license plate Transmitting the data via Ethernet or optional wireless interface The IIT camera IR Illuminator provides sufficient illumination to produce pictures of license plates at night time Output for controlling an external flash is provided if total vehicle illumination is required The IIT...

Страница 12: ...IIT Camera System Manual 12 Introduction 1 3 IIT Camera Overview Figure 1 VIS CAM 350 IIT overview 1 4 Principle of Operation Figure 2 Block Diagram of the IIT Camera ...

Страница 13: ...dulated light is continuously transmitted from the camera s IR illuminator The reflected signal caused by a license plate on a passing vehicle is correlated for correct modulation frequency phase amplitude and the number of high samples If the trigger criteria are validated as correct a trigger is generated and an image is grabbed The light sensor values shutter gain and pedestal that ensure optim...

Страница 14: ...e special IIT functions many of the I O Board functionalities from VIS CAM 300 350 400 are available This includes output for camera heater output for external flash and 24V auxiliary output If only the IIT trigger functionality is used excluding the internal light sensing feature the camera can be mounted together with an external light sensor For details regarding Light Sensor positioning and co...

Страница 15: ... license plate must be in between 10m and 20m 2 1 2 Camera tilt considerations The requirement to freeze the motion of high speed vehicles limits how steep or shallow the tilt angle of the camera may be For example it is important to prevent the horizon from appearing in the image and thereby allowing the sun to blind the camera For over lane installations a camera tilt between 20º to 30º is recom...

Страница 16: ...Trigger and Light Sensor function As mentioned in section 2 1 1 the performance of the camera is dependent on respecting installation parameters These performance conditions have influence on both the trigger and the light sensor function Various weather caused conditions may also influence the performance A wet license plate has less retro reflectance than a dry one and the same applies if it is ...

Страница 17: ...Installation 17 IIT Camera System Manual 3 Installation 3 1 Camera Dimensions Figure 7 IIT Camera Housing side view Figure 8 IIT Camera Housing front view ...

Страница 18: ... they are loose they can be turned by fingers The screws are retained by springs When the rear plate is removed the drawer holding the electronics can be pulled out after removing the two screws marked 3 in figure B The lid is held by a drawbar as shown in figure C inside view and figure D of the lid taken off To take off the lid the two screws marked 2 in figure A are loosened Start by turning th...

Страница 19: ...taching the removable top lid to the gantry or pole The tether has a loop at each end First you should loop the tether around the gantry and hook one loop through the other as shown in figure A below Figure A Next attach the tether to the lid using the pin on the right rear and the provided hardware as shown in figure B Figure B ...

Страница 20: ...the cable entry is different as shown in the picture below Figure 9 IIT Camera Cable Entry It is very important that the outer cable shield is connected to the rear plate at the cable entry and that the shield around the Ethernet pairs are run to the orange terminal block as shown in the picture Figure 10 Cable shield connection to chassis ...

Страница 21: ...Installation 21 IIT Camera System Manual Figure 11 IIT Camera I O Board Layout ...

Страница 22: ... White Brown in Cat5E 6 Cable Ethernet D Not Used 8 Brown in Cat5E 6 Cable Ethernet D Not Used 9 Black IN RED BLACK PAIR GND 10 Red IN RED BLACK PAIR 24V DC 11 Pink IN PINK BLACK PAIR Trigger Out Balanced Trigger Pulse Output 12 Black IN PINK BLACK PAIR Trigger Out Balanced Trigger Pulse Output 13 Brown IN BROWN BLACK PAIR LS RS485 Serial Trigger Command Output 14 Black IN BROWN BLACK PAIR LS RS48...

Страница 23: ...control signal connection to the IIT camera is from X1 on the IIT I O Board The signals are Figure 13 IIT I O Board Flash Connector X1 signals The electrical signals are the same as the VIS CAM Systems 350 400 flash connector and the connections to the flash is as described in section 3 4 of the VIS CAM System Installation manual ...

Страница 24: ...t Ethernet interface the RJ45 patch cable must be a crossover Note Please do not make any adjustments of the camera mount inside the housing as this has been adjusted from factory to the right position relative to the IR light coverage As a supplement the IIT I O Board is equipped with a light emitting diode LED at each of the 8 fiber inputs The LED is green when the reflected signal is detected f...

Страница 25: ... setup when using built in Light Sensor The Camera Properties for using the built in Light Sensor Function is shown below Figure 15 Unselect the TTL Trigger input in the Trigger section for the camera Figure 16 Select Manual Control in the Camera ADR Control ...

Страница 26: ...lly typing the value 4 2 Properties setup when using External Light Sensor The Camera Properties for using the external Light Sensor Function is shown below Figure 18 Trigger Selection Unselect the Serial Trigger input and select the TTL Trigger in the Trigger section for the camera ...

Страница 27: ...ure 19 Select Falling Edge in the Trigger Edge Select field Figure 20 Select Camera ADR Control using Light Sensor in the Camera ADR Control Figure 21 Set the Light Sensor IP address As described in the VIS CAM System Installation manual section 4 ...

Страница 28: ...LPR Parameters If the camera was purchased with built in ALPR reader the parameter set up is described below Figure 23 Image Acquisition Image 1 The LPR box is found by scrolling the bar on the right side all the way down The configuration of the built in ALPR is found in the Properties section 9 Figure 24 Embedded ALPR section The field ALPR Enable must be set to Enabled ...

Страница 29: ...nd Maximum 45 The Max time stopping criteria defines how much time must be used maximum for trying to read the license plate The Max number of plates specifies the number of license plates the reader will be looking for Set to 1 The ALPR Country Module controls which country module is used by the camera Select Country Module purchased 4 3 2 ENSetup Image and LPR output Capture Mode Select LPR in t...

Страница 30: ...IIT Camera System Manual 30 System Set Up Figure 27 View TCP IP In order to capture images Capture Images must be selected as shown below Figure 28 Capture Images setting ...

Страница 31: ...iple Commands can be launched to the board from the EN Setup application Video window by right clicking the mouse in the left side a selecting Serial Terminal and then Laser Trigger IIT I O Board Figure 29 Serial Communication Terminal All variables are set as hexadecimal numbers All commands are terminated by a CR carriage return Parameters are always two digits 01 to FF The commands are normally...

Страница 32: ...ing is 1ms The minimum time between two trigger pulses are set by command M to a value between 01 and FF 1 255ms The number of consecutive samples being high from a passing license plate is set by the command X The factory setting is 06 and the unit is 0 2ms The setting applies to all 8 fiber channels The number of consecutive samples being low between two passing license plates is set by the comm...

Страница 33: ...System Set Up 33 IIT Camera System Manual Figure 31 IIT Camera Trigger Generation Principle ...

Страница 34: ...hrough reflection sensitive area See section 1 5 2 1 Noisy pictures TTL and Serial trigger are both enabled Disable TTL trigger in Properties in EN Setup Application if IIT Light Sensor is used 2 2 The time between two triggers are set too low Set the minimum time between triggers command M via Serial Terminal in EN Setup application in accordance with camera specific values 3 1 Embedded ALPR does...

Страница 35: ...wa 35mm lens 4 Slowly adjust the focus ring from near to far for the best picture If the best focus position is passed adjust back to near and adjust towards far position again 5 When the best position is found secure the focus locking screw on the lens and reconnect the IR Illuminator Verify that the license plate focus is acceptable The best way to check this is by mounting an 850nm band pass fi...

Страница 36: ...sembly is too small to cover the width of this sensor A solution using two cameras has therefore been chosen where the trigger unit is a TS 9725EN camera Only the fiber front of this camera is exploited and the camera does not need to be powered except when alignment is performed at factory The TS 9725 camera is mounted with a 25mm lens and the TS 2030EN TS 2076EN with a 35mm lens giving almost th...

Страница 37: ...connection of TNC 100 floodlight for night time visible constant illumination is shown below Figure 35 Connection to TNC 100 for VIS CAM 400 IIT The on and off switching point are set via the camera properties in the EN Setup The typical values are shown below Figure 36 Night Light Control ...

Страница 38: ... I 32 50 Sets comparator level of channel 7 Dac 8 value J 32 50 Sets comparator level of channel 8 LS multiply factor K 01 01 Sets the first slope of the light sensor ADC curve together with LS divide factor up to the LS knee point LS divide factor L 01 01 See description Ks Min time between triggers M C8 Depends on model Unit 1ms Sets the minimum time between two triggers No trigger can be genera...

Страница 39: ... from the EN Setup via Serial Communication Terminal I O Board Inquiry syntax command CR Change value syntax command hex value CR Name Cmd Value Description Hex Dec Power up temperature high Q 41 65 The high temperature where the power supply for the camera is switched off Warning temperature high X 3F 63 The warning temperature at which the camera will start preparing power down Fan start tempera...

Страница 40: ...he answer is S temperature temperature status fan stauts heater status CR The temperature is shown in two s complement Example of an answer S1A800 CR 1A is 26 deg 8 is power ok 0 fan off no current no overload 0 heater off no current no overload Heater and fan status 0 off no current no overload ok 1 on no current no overload fault 2 off no current no overload fault 3 on no current no overload ok ...

Страница 41: ...icture Sec 1 5 2 Make sure that the geometry is correct Max height 7m Angle 20 30 Distance from camera to vehicle license plate 10 20m Sec 2 Note With any configuration the distance in between camera and license plate must be 10m and 20m 3 Mount the camera physically using the VIS Mount drill template shown and draw the cables Sec 3 4 Connect supply voltage wires and Ethernet to X2 Ethernet pairs ...

Страница 42: ...t and using the tools from EN Setup Do not adjust the camera mount inside the housing Sec 4 7 Focus lens and make sure that the lens iris is fully open and no polarizer is mounted Secure locking screws after adjustment Appendix B 8 Properties settings using internal Light Sensor Sec 4 1 IIT IO Board settings X 05 Y 0A M C8 K 01 P 3A Q 03 T 96 Properties settings using external Light Sensor Sec 4 2...

Страница 43: ......

Страница 44: ...www jai com Europe Middle East Africa Phone 45 4457 8888 Fax 45 4491 3252 Asia Pacific Phone 81 45 440 0154 Fax 81 45 440 0166 Americas Phone Toll Free 1 800 445 5444 Phone 1 408 383 0301 ...

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