National Instruments ISC-1762 Скачать руководство пользователя страница 28

Страница: 28 / 80

3-6

ni.com

Chapter 3

NI Smart Camera Image Sensor

You can enable hardware binarization in the following ways:

•

In Vision Builder AI, configure the

Lookup Table

attribute on the

Advanced

tab of the

Acquire Image (Smart Camera)

step. Refer to the

NI Vision Builder for Automated

Inspection: Configuration Help

for more information.

•

In MAX, use the

Lookup Table

drop-down box on the

LUT

tab of the smart camera

configuration page to enable hardware binarization. Refer to the

Measurement &

Automation Explorer Help for NI-IMAQ

for more information.

Содержание ISC-1762

Страница 1: ...ISC 1762...

Страница 2: ...NI Vision NI 17xx Smart Camera User Manual For NI 1722 1742 1744 1762 1764 Smart Cameras NI 17xx Smart Camera User Manual September 2013 374174A 01...

Страница 3: ...ses and current events National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin Texas 78759 3504 USA Tel 512 683 0100 For further support information refer to the Technical Supp...

Страница 4: ...ational Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control The warranty provided herein does not cover damages defects malfunctions or service fai...

Страница 5: ...NTS IN ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED TO CAUSE SIGNIFICANT INJURY TO A HUMAN 2 IN ANY APPLICATION INCLUDING THE ABOVE RELIABILITY OF OPERATION OF THE SOFT...

Страница 6: ...e encouraged to try to correct the interference by one or more of the following measures Reorient the antenna of the receiver the device suffering interference Relocate the transmitter the device gene...

Страница 7: ...ted Inspection 1 3 LabVIEW 1 3 LabVIEW Real Time Module 1 4 NI Vision Development Module 1 4 NI Vision Acquisition Software 1 4 Chapter 2 Power and I O POWER I O Connector 2 1 NI Smart Camera Power Re...

Страница 8: ...Images 5 2 Internal Timing 5 2 External Trigger 5 2 Maximum Frame Rate 5 5 Determining the Maximum Frame Rate 5 5 Determining the Scan Mode 5 6 Determining the Exposure Time 5 6 Determining the Lighti...

Страница 9: ...nd Static IP Address Assignment 7 3 Firewall Considerations 7 3 Subnet Considerations 7 4 Chapter 8 Thermal Considerations and Mounting Thermal Considerations 8 1 Mounting the NI Smart Camera 8 2 Appe...

Страница 10: ...Zone is located on the National Instruments Web site at ni com zone You can find the following documents in the NI Developer Zone Using the NI 17xx Smart Camera Direct Drive Lighting Controller Demons...

Страница 11: ...he basic concepts of image analysis image processing and machine vision This document also contains in depth discussions about imaging functions for advanced users NI Vision for LabVIEW Help Describes...

Страница 12: ...sensor processor and digital I O in a compact rugged housing Table 1 1 shows the differentiating features for each smart camera model Table 1 1 NI Smart Camera Models NI Smart Camera Model Processor...

Страница 13: ...r more information about the Direct Drive lighting controller The smart camera also has one 5 V TTL strobe output and one unregulated 24 V strobe output for lighting control The smart camera also incl...

Страница 14: ...sion software you can use to configure the NI Smart Camera and prototype benchmark and deploy machine vision applications Creating applications in Vision Builder AI does not require programming Vision...

Страница 15: ...ith the LabVIEW Real Time Module refer to the NI Vision for LabVIEW Help NI Vision Acquisition Software The NI Vision Acquisition Software CD contains Measurement Automation Explorer MAX configuration...

Страница 16: ...or The two pins used to connect to a power supply pin 15 and pin 5 are also shown in the table Refer to Getting Started with the NI 17xx Smart Camera for information about connecting a power supply to...

Страница 17: ...regulated output dependent on the range of the power supply provided to the smart camera If the power provided to the smart camera is 20 15 with 5 AC ripple the external lighting strobe output could b...

Страница 18: ...Inputs Caution Do not apply a voltage greater than 30 VDC to the isolated inputs Voltages greater than 30 VDC may damage the NI Smart Camera Caution The isolated inputs and outputs on the smart camer...

Страница 19: ...ated inputs and outputs on the smart camera provide an easy means for preventing ground loops that could degrade signal integrity The isolation on the smart camera is not safety isolation The isolated...

Страница 20: ...l Devices Use the RS232_RXD and RS232_TXD signals on the POWER I O connector for serial communication Connect the RS232_RXD signal on the NI Smart Camera to the Tx signal on your serial device Connect...

Страница 21: ...s the movement of an object By providing Phase A and Phase B signals to the smart camera you can obtain a precise measurement of the object position Using a quadrature encoder gives you the ability to...

Страница 22: ...onnecting Differential Line Drivers Figure 2 6 shows the internal quadrature encoder RS 422 input circuit Figure 2 6 NI Smart Camera Quadrature Encoder Input Circuit Phase A Phase A Phase A Phase A Ph...

Страница 23: ...bject you want to inspect To calculate the horizontal and vertical field of view FOV of your imaging system use Equation 3 1 and the specifications for the image sensor of your smart camera as listed...

Страница 24: ...milarly the field of view in the vertical direction is 3 3 Based on the result of Equations 3 2 and or 3 3 you can see that you might need to adjust the various parameters in the FOV equation until yo...

Страница 25: ...fer to Appendix A Specifications to find the normalized spectral response curves for the VGA and SXGA sensors Partial Scan Mode Partial scan mode is a method of obtaining higher frame rates by reading...

Страница 26: ...off between making smaller signals more visible at the cost of increased noise and no longer being able to differentiate between larger signals For most applications the NI Smart Camera default gain s...

Страница 27: ...of interest in an image To separate objects under consideration from the background select a pixel value range This pixel value range is known as the gray level interval or the threshold interval Whe...

Страница 28: ...on the Advanced tab of the Acquire Image Smart Camera step Refer to the NI Vision Builder for Automated Inspection Configuration Help for more information In MAX use the Lookup Table drop down box on...

Страница 29: ...ing connector on the NI Smart Camera Caution All signals on the lighting connector are outputs from the smart camera Do not connect any external voltage or current source to any pin on the lighting co...

Страница 30: ...allowed current for continuous mode and strobed mode For applications with a pause between exposures while new parts move into position you can strobe the light which allows the use of higher current...

Страница 31: ...the configured current to be at or below the maximum continuous current Caution If you are using the 5 V strobe output or the 24 V strobe output the software does not impose any limits on the duration...

Страница 32: ...ht In Vision Builder AI Select the Lighting tab of the Acquire Image Smart Camera step Click Configure Light Source and select Select Light To use a light that does not have a lighting file you can en...

Страница 33: ...drop within the specified range of the smart camera The minimum voltage drop specified for the light does not fall below the specified range of the smart camera Under some circumstances some LEDs part...

Страница 34: ...era a 5 V TTL strobe output and a 24 V strobe output The 5 V TTL strobe output is available for connecting to devices that require a 5 V signal The 24 V strobe output is powered by the voltage from th...

Страница 35: ...ls on the Lighting tab of the Acquire Image Smart Camera step Refer to the NI Vision Builder for Automated Inspection Configuration Help for more information about configuring the 5 V TTL and 24 V str...

Страница 36: ...s how to connect an external lighting controller to the 24 V output on the NI Smart Camera Figure 4 4 Connecting an External Lighting Controller to the 24 V Strobe Output 24 V Strobe Output 18 V 30 V...

Страница 37: ...the image sensor for too long of a time relative to the amount of light in the environment results in a bright low contrast image When the image sensor is exposed for an appropriate amount of time rel...

Страница 38: ...ages You can configure the NI Smart Camera to acquire images based on internal timing or an external trigger signal In both cases the smart camera can acquire full frame images at the camera s maximum...

Страница 39: ...rograms Vision Builder AI Select the Triggered Acquisition checkbox on the Trigger tab of the Acquire Image Smart Camera step LabVIEW Use the IMAQ Configure Trigger 3 VI MAX Select the Enable Trigger...

Страница 40: ...ent If you are strobing a light there is a short delay while the lighting controller turns on the light This delay is represented by the lighting turn on time in Figure 5 1 Table 5 2 lists the lightin...

Страница 41: ...the Maximum Frame Rate You can determine the maximum frame rate for your configuration in software by reading the Max Frame Rate indicator in Vision Builder AI reading the Max Frame Rate property in L...

Страница 42: ...m frame rate for selected scan mode Determining the Exposure Time The minimum frame period depends on exposure time lighting mode and trigger delay A longer exposure time results in a longer frame per...

Страница 43: ...to calculate the minimum frame period for untriggered acquisitions with and without strobing min frame periodNoStrobeNoTrigger T L E 5 3 min frame periodWithStrobeNoTrigger T L E R 5 4 Refer to Equat...

Страница 44: ...ries depending on the smart camera configuration as shown in Table 5 3 Table 5 3 Image Readout Duration Smart Camera Model Full Scan 1 2 Scan 1 4 Scan Binning NI 1722 NI 1742 NI 1762 16 38 ms 8 86 ms...

Страница 45: ...Figure 6 1 NI Smart Camera LEDs Device Initialization While the NI Smart Camera initializes the POWER LED lights solid green and the STATUS IMG ACQ PASS and FAIL LEDs exhibit a scrolling pattern When...

Страница 46: ...second while internal systems power up If the POWER LED stays red for longer than one second it indicates that the voltage is out of range STATUS LED The STATUS LED is green during normal operation Th...

Страница 47: ...nfiguring DIP Switches section for information about the SAFE MODE DIP switch 4 Flashes Green The smart camera has experienced two consecutive software exceptions The smart camera automatically restar...

Страница 48: ...s or excessive force when changing the switch position SAFE MODE Switch To start the NI Smart Camera in safe mode move the SAFE MODE switch to the ON position and reapply power or restart the smart ca...

Страница 49: ...move the IP RESET switch to the OFF position and reapply power or restart the smart camera Keep the IP RESET switch in the OFF position during normal operation NO APP Switch Move the NO APP switch to...

Страница 50: ...ch only when powering up or restarting and will only display device information during startup When the CONSOLE switch is in the OFF position you can use the smart camera serial port and NI Serial dri...

Страница 51: ...or half duplex The smart camera automatically detects the speed and duplex capabilities of its link partner and configures for the fastest common interface The smart camera can also perform auto cros...

Страница 52: ...te network traffic that is not related to the smart camera traffic will often be present on the link In dedicated links between a computer and the smart camera typically the only traffic on the link w...

Страница 53: ...llowing potential issues before using a DHCP server to assign an IP address to the smart camera If the network has both static IP addresses and IP addresses managed by a DHCP server the DHCP server mu...

Страница 54: ...IP address or reassign a static IP address for the subnet where you want the smart camera to reside then physically move the smart camera to the other subnet Refer to Getting Started with the NI 17xx...

Страница 55: ...specifications Figure 8 1 shows the location to take temperature measurements on the smart camera Figure 8 1 Measuring the NI Smart Camera Housing Temperature Operating the smart camera above the spe...

Страница 56: ...ting the NI Smart Camera Caution If you choose not to mount the NI Smart Camera to a thermally conductive structure do not position the smart camera with the heat sinks resting on any surface Doing so...

Страница 57: ...he NI Smart Camera with Dimensions Figure 8 5 Bottom View of the NI Smart Camera with Dimensions 30 89 mm 1 216 in 32 80 mm 1 291 in 38 91 mm 1 532 in 50 62 mm 1 993 in 44 14 mm 1 738 in 117 66 mm 4 6...

Страница 58: ...enabled 24 VDC 20 15 IEC 1311 800 mA Reverse polarity protection Yes Memory SDRAM 128 MB Nonvolatile program data memory 128 MB Image data storage Unlimited using FTP or an Ethernet hard drive Proces...

Страница 59: ...l 8 bits 256 gray levels Minimum exposure time 36 28 s Exposure time increment 31 2 s Spectral characteristics Refer to Figure A 1 Figure A 1 VGA Sensor Spectral Response Curve Gamma 1 0 fixed SXGA Se...

Страница 60: ...1 2 Up to 26 fps Optical format 1 2 in Sensor readout Progressive scan Bits per pixel 8 bits 256 gray levels Minimum exposure time 76 68 s Exposure time increment 71 6 s Spectral characteristics Refe...

Страница 61: ...imum strobe duty cycle 45 5 V external strobe Polarity Programmable Strobe frequency Operating frame rate VOH minimum 3 8 V VOL maximum 0 55 V IOH maximum 12 mA IOL maximum 12 mA 24 V external strobe...

Страница 62: ...oltage 0 V to 1 V ON state Input current 3 mA to 5 4 mA Input voltage 20 V to 30 V Minimum pulse width 1 ms Isolated Outputs Channels 2 Output type Sinking sourcing independently configurable External...

Страница 63: ...s up to 2 000 m Safety The NI Smart Camera meets the requirements of the following standards for safety and electrical equipment for measurement control and laboratory use IEC 61010 1 EN 61010 1 UL 61...

Страница 64: ...hat eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers For additional environmental information refer to the Minimize Our Environmental Imp...

Страница 65: ...le for DHCP use on your network or the DHCP server assigns the same IP address to another device Either remove or reconfigure the other device or reconfigure the smart camera to use a different IP add...

Страница 66: ...de the software is interrupted or if system files are deleted from the smart camera by the user Reinstall software on the smart camera Refer to Getting Started with theNI 17xx Smart Camera for informa...

Страница 67: ...within an enclosure the ambient temperature of the camera is the temperature inside the enclosure which can be notably warmer than the ambient temperature outside the enclosure 2 Measure the smart ca...

Страница 68: ...our lighting settings in MAX or Vision Builder AI You have requested an amount of current within the specified range of the smart camera and within the maximum lighting current settings you configured...

Страница 69: ...strobe in MAX or Vision Builder AI Complete one of the following procedures to enable the correct lighting strobe MAX 1 Launch MAX 2 In the Configuration tree expand Devices and Interfaces 3 Expand N...

Страница 70: ...Smart Camera is Powered On If the power supply is properly connected to the smart camera but the POWER LED does not light up check that the power supply is 24 V 20 15 and within the specifications ou...

Страница 71: ...id drastic temperature changes to prevent dew condensation When necessary use the following procedure to clean the sensor at a workstation equipped with anti ESD facilities If dust sticks to the CCD f...

Страница 72: ...ervice Program SSP with the purchase of most software products and bundles including NI Developer Suite NI also offers flexible extended contract options that guarantee your SSP benefits are available...

Страница 73: ...rt and Professional Services You also can visit the Worldwide Offices section of ni com niglobal to access the branch office Web sites which provide up to date contact information support phone number...

Страница 74: ...values Objects in the image usually have a pixel intensity of 1 or 255 and the background has a pixel intensity of 0 C CCD Charge Coupled Device A chip that converts light into electronic signals D D...

Страница 75: ...tate to the low state field of view The area of inspection that the camera can acquire fps Frames per second G gain The amount of increase in signal power voltage or current expressed as the ratio of...

Страница 76: ...mation process control and manufacturing systems pulse train A signal consisting of a series of continuous pulses Q quadrature encoder An encoding technique for a rotating device where two tracks of i...

Страница 77: ...trol Protocol A set of standard protocols for communicating across a single network or interconnected set of networks TCP is for high reliability transmissions trigger Any event that causes or starts...

Страница 78: ...inking output sensors to isolated inputs 2 4 sourcing output sensors to isolated inputs 2 3 to a quadrature encoder 2 6 to serial devices 2 5 CONSOLE DIP switch 6 6 D Declaration of Conformity NI reso...

Страница 79: ...ommunicating with the console 2 6 connecting an external lighting controller 4 6 an isolated output to a sinking external load 2 5 an isolated output to a sourcing external load 2 4 sinking output sen...

Страница 80: ...Automated Inspection documents xi NI Vision Development Module documents xii NI IMAQ documents xii S SAFE MODE DIP switch 6 4 selecting a light 4 4 software application 1 4 NI resources D 1 programmin...

Результаты поиска

Содержание ISC-1762

Отзывы:

Похожие инструкции для ISC-1762

Бренды по названию

Популярные бренды

National Instruments ISC-1762, Руководство пользователя

Результаты поиска

Содержание ISC-1762

Отзывы:

Похожие инструкции для ISC-1762

Бренды по названию

Популярные бренды