Transcript
DISTANCE SENSORS CM5, CMP51, CMP52 and Speeder X1 TECHNICAL MANUAL
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Contact information Noptel Oy Address: Tel.: E-mail: Technical support:
Teknologiantie 2, FI-90590 Oulu, Finland +358 40 181 4351
[email protected] Web site: www.noptel.fi
Downloads: Documents : http://www.noptel.fi/eng/nms/index.php?doc=7_downloads/5_manuals&group=MSC Software: http://www.noptel.fi/eng/nms/index.php?doc=7_downloads/7_software&group=MSC Firmware: http://www.noptel.fi/eng/nms/index.php?doc=7_downloads/ Ask from
[email protected] Document Information : Document Title: Document Version: Released: Current printing Document ID : Document Status:
CM5, CMP5x and Speeder X1 Technical Manual 1.4 06.05.2013 3.9.2014 N41952AE Released
Measurement laser classification The CM5, CMP51, CMP52 and Speeder X1 are classified in Finland in Laser class 1 according to the international standard EN 60825-1:2007 (IEC 60825-1:2007). Finnish Institute of Occupational Health, February 27, 2009 The national regulations in most countries usually require the equipment to be reclassified in the concerned country. In Finland the transmitter has received the below-described label as the proof of the classification. The labels have to be made in the target country in accordance with the national regulations.
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CLASS 1 LASER PRODUCT EN 60825-1:2007
Fig. 1.
Laser classification label for sensors without a laser pointer
Laser pointer classification Optional laser pointer is Class 3R (3A) laser product. A Class 3R laser is considered safe if handled carefully, with restricted beam viewing. With the laser pointer, the maximum permissible exposure (MPE) can be exceeded, but with a low risk of injury.
LASER RADIATION AVOID DIRECT EYE EXPOSURE
Laser beam
CLASS 3R LASER PRODUCT EN 60825-1:2007
Fig. 2.
Laser warning labels for sensors with the laser pointer.
Disposal Do not dispose this product as unsorted municipal waste. In the European Union all electrical and electronic products, batteries, and accumulators must be taken to separate collection at the end of their working life. Copyright Notice Specifications, and implementation subject to change without notice due to continuous research and development. Copyright © 2013 Noptel Oy, Oulu, Finland
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1
2
Introduction ............................................................................................................................. 6 1.1
CM5 ................................................................................................................................................6
1.2
CMP51 ...........................................................................................................................................7
1.3
CMP52 ...........................................................................................................................................7
1.4
Speeder X1 .....................................................................................................................................8
1.5
Basic connection ............................................................................................................................8
1.6
Measurement principle.................................................................................................................9
1.7
Reference point and aiming beam ...............................................................................................9
Structure................................................................................................................................. 10 2.1
Opto-mechanical structure ........................................................................................................10
2.2
Electronics ...................................................................................................................................10
2.3
Mechanical structure and casing ...............................................................................................11
2.4
Laser pointer (option) .................................................................................................................11
3
Operation................................................................................................................................ 12
4
Connection ............................................................................................................................. 14
5
4.1
RS-232, RS-422 and WLAN cable .............................................................................................14
4.2
LAN cable ....................................................................................................................................16
4.3
Direction of the Digital In / Digital Out ....................................................................................16
4.4
LAN and WLAN communication ..............................................................................................16
Communication and software ............................................................................................... 17 5.1
CM Configuration Software ......................................................................................................17
5.2
CM_Win.exe ................................................................................................................................17
5.3
HyperTerminal............................................................................................................................18
6
Typical technical specifications ............................................................................................ 19
7
Dimensions............................................................................................................................. 20
8
Handling and maintenance ................................................................................................... 24
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1 INTRODUCTION The CM5, CMP51, CMP52 and Speeder X1 laser distance sensors are designed for both portable and fixed applications. They measure ranges from 1 to 90 metres in natural targets with poor reflectivity (10%). If the reflectivity of the surface is between 40 to 90% the operating range is two to three times longer. With a reflector the operating range is up to 380 metres. The sensors are small and lightweight, and the airtight structure is meant to withstand outdoor use in varying temperatures. The sensor can be connected to a control system via RS-232 or RS-422 port and LAN or WLAN are the hardware options. In all cases one digital I/O-line, one digital output line and as an alternative to digital output optional analogue output are available. The supply voltage range is 10…30V. Sensors are usable as an accurate location or movement detector, a distance or a speed meter. They have several operation modes:
ASCII mode (setup and distance measurement) Binary modes (distance data in serial port in binary format) Trigger window mode (location detector) Movement triggering (movement detector) Speed measurement with one or two sensors Vehicle classification Capture mode (data collection into internal memory) Continuous speed measurement Synchronized binary measurement
Full descriptions about modes can be found in CM Distance Sensors Configuration and API Guide as well as Speeder X1 and X2 Laser Radar Configuration and API Guide.
1.1
Fig. 3.
CM5
CM5 Distance sensor
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The optical distance meter with a narrow laser beam (1.9 mrad) is suitable for measuring small targets. This sensor is also considered for distance triggering and speed measurements with two sensors. CM5 is good choices for profile measurement applications. Thanks to the narrow beam, it enables to measure even little details of the profile shape.
1.2
Fig. 4.
CMP51
CMP51 Distance sensor
The measurement beam divergence of the CMP51 sensor is 6 mrad. It features longer measurement range than CMP52, and shorter than CM5. It’s suitable for measuring applications where wider than CM5 beam is necessary.
1.3
Fig. 5.
CMP52
CMP52 Distance sensor
The sensor with a wide laser beam (16 mrad) is suitable for measuring large targets and reflectors, and enables speed measurements using one sensor. All measurement functions are usable with each model. Hence, the selection of the sensor depends on the opto-mechanical requirements in the application.
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1.4
Speeder X1
Speeder X1 has two laser beams with 11.8 mrad deviation. The beam widths are 18 mrad. The sensor is suitable especially for speed measurement of vehicles. The speed measurement accuracy is better than with one CMP51 or CMP52.
Fig. 6.
1.5
Speeder X1 Distance sensor
Basic connection
The sensor is connected to a PC via a serial communication port using the accompanying cable in the package. The cable has a connector for the sensor at the one end and the other end is open wired. Connection is made as shown in the tables in Chapter 4. An adapter for RS232 to USB or RS422 to USB can be used. Furthermore an external power supply for the sensor is needed. See voltage values in Chapter 6. A triggering from the sensor could be used for external equipment (camera, other CM or CMP sensor, etc.). Measured distance is also available as voltage of 0 to 4 V from analogue output pin as a hardware option.
Camera, etc. (option)
Triggering (Digital Out)
Serial Port Power Supply
Fig. 7.
Connection of the sensor to the computer. The camera is an option.
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1.6
Measurement principle
The sensor uses pulsed time-of-flight technology for distance measurement. In this technology short laser pulses are transmitted to the target and the reflected pulses are received into the receiver detection electronics. The time between the transmitted and received pulses is then calculated. The computing of time to distance is based on the constant speed of light. This principle allows very fast distance measurement with poorly reflecting targets. The pulsing rate can be up to 10 kHz depending on the sensor version.
1.7
Reference point and aiming beam Reference point
Fig. 8.
CM5, CMP51, CMP52 and Speeder X1 reference point
The reference point is in the rear edge of the black front panel. The calibration has been made in a 9-metre range to the target with reflectivity of 10%. Pointer beam (option): The pointer beam is directed parallel to the measurement beam. The pointer and the transmitter are placed on the opposite side of the front panel. The order of the optical parts and the differences between the centres of the measurement and pointer beams are presented in Fig. 9. D D: CM5 CMP51 CMP52 Speeder X1
Pointer
Fig. 9.
Receiver
57.0 mm 48.5 mm 48.5 mm 48.5 mm
Transmitter
The order of the optical parts in CM5, CMP51, CMP52 and Speeder X1
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2 STRUCTURE 2.1
Opto-mechanical structure
The optical transmitter, the receiver and the laser pointer are in same order in all models CM5, CMP51, CMP52 and Speeder X1 as presented in Fig. 9. The lens diameters and beam divergences of the sensors are: Sensor CM5 CMP51 CMP52 CMP52 focused (FB) Speeder X1
Receiver [mm] 30 20 19 19 19
Transmitter [mm] 30 19 8 8 12
Div. h x v [mrad] 1.9 x 0.03 6 x 0.08 16 x 16 15 x 2 18 x 12
The effective lens diameters are 1 to 2 mm smaller depending on the mechanical structure of the sensor. The laser beam divergences are presented in the form of horizontal x vertical in the table. The beam size can be calculated as follows: DB D DL where DB D DL
= Dimension of the beam (horizontal or vertical) = Distance to the target = Divergence of the beam = diameter of the lens
For example the beam sizes of CM5, CMP51 and CMP52 are 85 x 29 mm, 200 x 19 mm and 490 x 490mm at a 30 m, respectively. The divergences of two beams of Speeder X1 are 18 x 0.24 mrad and the angle between the beams is 11.8 mrad.
2.2
Electronics
The sensor consists of four main parts: Controller electronics for distance calculation and user interface Time to Digital Converter Receiver and transmitter electronics
Receiver Controller
Time to Digital Converter Transmitter
Fig. 10.
Basic structure of electronics.
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The electronics is highly integrated and includes Noptel's own ASIC's (Application Specific Integrated Circuits) for time calculation and other internal operations.
2.3
Mechanical structure and casing
The sensor has a very solid internal structure, and it withstands harsh environment conditions. The rear and front panels are connected by a special casing forming an airtight structure. The front panel includes lenses and rear panel airtight connector and a nitrogen valve. The sensor is nitrogen filled, allowing use in varying temperatures and environments. Do not open the cover or the valve in the rear panel. Opening them releases nitrogen and may cause moisture problems inside the sensor. The protecting class of the cable connector is IP65. In any case the cable should be mounted so that water does not flow directly to the connector.
2.4
Laser pointer (option)
All models are available with a separate built-in laser pointer. It is aligned parallel with the transmitter beam. The laser pointer does not show the exact point of measurement, but a point in the area of measurement. It is intended to help the setting up of the sensor in fixed installations, but can also be used as a pointer in portable use. CAUTION ! The pointer is CLASS 3A laser product. AVOID DIRECT EYE EXPOSURE!
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3 OPERATION The sensor has several operation modes. The mode is selected either in parameters or by a command via the serial interface. The commands and their operation are explained in CM Distance Sensors Configuration and API Guide as well as Speeder X1 and X2 Laser Radar Configuration and API Guide. 0
ASCII mode / Configuration Mode
The sensor sends measurement results in ASCII format according to the user’s commands and parameter settings. In this mode the sensor receives commands such as parameter change and state control or operation mode selection. 1
Continuous ASCII mode
The sensor sends measurement results in ASCII format continuously. 2
Continuous Binary mode
The sensor sends measurement data in binary format according to parameter settings. 3
Binary mode, HW controlled
The sensor sends measurement data in binary format according to parameter settings. The measurement is controlled by the trigger-input-line. 4
Binary mode, serial controlled
The sensor sends measurement data in binary format according to parameter settings. The measurement is controlled by serial communication. 5
Trigger window mode
The sensor controls the measurement results in the trigger window, and according to parameters it gives trigger-output-signal and sends trigger distance to serial port. In this mode the profile of the target can also be measured. 6
Speed measurement mode with two sensors
The sensor works as the second sensor and waits for the trigger-input-signal from the first sensor. Having received the trigger signal, it waits its own trigger activation and calculates speed using parameter values. 7
Speed measurement mode with one sensor
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The sensor waits for the target to be in the trigger window and then starts measuring the change of distance to the target in the selected window and calculates the speed. 8
Capture mode, HW controlled
The sensor records 1000 samples into its memory having been activated by a trigger in line and after the recording sends the values in ASCII format to the serial line. 9
Capture mode, serial controlled
The sensor records 1000 samples into its memory after activation via the serial communication line. Results are sent in ASCII format to the serial line. 10
Continuous speed mode
In this mode the sensor gives speed values whenever it can detect movement in the measurement range. The target may move into any direction. The mode gives accurate speed values only if the shape of the target and the measurement geometry do not affect the measurement. 11
Size mode
In this mode the sensor operates in the same way as in Mode 7, but the accurate speed algorithm is not used. The mode is used to get rough classification data from traffic. 12
Multilane speed measurement mode
The mode is designed to be used at the side of the road on the level of vehicles. The mode provides the possibility to catch the speeds of vehicles travelling on more than one lane. 13
Movement trigger mode
In this mode the sensor gives a trigger when distance to a target changes. For example the sensor can trigger to the opening of a door, but does not react to people passing between the sensor and the door. Synchronized binary mode: The feature requires a special firmware which is available on request. Sensors are connected to the chain and to the same RS422 serial line. Each sensor activates the next one to measure.
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4 CONNECTION The I/O connector (see Fig. 11) is used for user interface as communication, power, analogue out (option), and digital I/O. The serial interface variations are RS-232, RS422 or LAN and WLAN as hardware options. The connector is airtight.
I/O Connector
Fig. 11.
Rear view of CM5. The connector is the same in CMP51, CMP52 and Speeder X1.
The connection is made by using the cable in the package. The one end of the cable is open wired and it should be connected to the suitable connector according to the tables in following chapters.
4.1
RS-232, RS-422 and WLAN cable
Fig. 12.
Connection cable for RS232, RS422 and WLAN communication.
Contact numbers of the I/O-connector and wire colours for RS232, RS422 and WLAN: No 1 2 3 4 5 6
Colour White Brown Green Yellow Gray Pink
7 8 Shield
Blue Red Black
RS422 Signals TX+ TXRX+ RXDigital In / Digital Out Digital Out/Analogue out (option) Signal GND UBAT GND/case
RS232 Signals TX2 TX1 RX2 RX1 Digital In / Digital Out Digital Out/Analogue out (option) Signal GND UBAT GND/case
WLAN Signals NC NC NC NC Digital In / Digital Out Digital Out/Analogue out (option) Signal GND UBAT GND/case
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Digital output:
Open drain with weak pull-up (100 k to 5V). Imax = 1 A
Digital in/out:
VIL < 1.5V, VIH > 3.5V, MAX 5V, VOL < 0.55V, VOH > 3.8V
NC:
Not Connected
Schematic diagrams of I/O connections and ESD protections are presented in the next picture.
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4.2
LAN cable
Fig. 13.
Connection cable for LAN communication.
Contact numbers of the I/O-connector and wire colours of the cable for LAN: No 1 2 3 4 5 6 7 8
Colour Green/White Green Orange/White Orange Brown Blue Black White
4.3
Digital output: Digital in/out:
Cable 1 TX+ TXRX+ RX-
Cable 2
Digital In / Digital Out Digital Out/Analogue out (option) GND UBAT
Open drain with weak pull-up (100 k to 5V). Imax = 1 A VIL < 0.8V, VIH > 2.0V, MAX 5V, VOL < 0.55V, VOH > 2.4V
Direction of the Digital In / Digital Out
The direction of the Digital input/output depends on the operation mode: Operation mode 1 2 3 4 5 6 7 8 9
4.4
Description Normal mode Binary mode Binary mode with HW triggering Binary mode with serial triggering Trigger window mode Speed measurement mode with two sensors Speed measurement mode with one sensor Capture mode with HW triggering Capture mode with serial triggering
Direction Input NA Input NA Output Input Output Input NA
LAN and WLAN communication
Local Area Network (LAN) has been implemented on xPico Embedded Device Server module and Wireless LAN (WLAN) on xPico Wi-Fi Embedded Wireless Device Server module. These modules are made by Lantronix. Documentation of the modules are available from http://www.lantronix.com/support/downloads/ .
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5 COMMUNICATION AND SOFTWARE The sensor uses RS-232 communication and one COM port in the PC. The main principle is that the sensor is part of the user's system and it is controlled by the user's program using commands presented in CM Distance Sensors Configuration and API Guide as well as Speeder X1 and X2 Laser Radar Configuration and API Guide. The sensor can be controlled with a suitable terminal program supporting COM ports. For example HyperTerminal in Windows, PC-Plus and similar ones can be used. Windows 95/98 as well as Win XP work normally well with COM ports. Win 2000 may however present some problems. You can also use one of Noptel’s software if they can be used in your computer.
5.1
CM Configuration Software
CM Configuration Software is usable for configuring the sensor and testing the operation. Furthermore, it makes automatic setting of measurement window easier in triggering and speed measurement applications. The configuration can be stored to working or permanent memory of the sensor. Furthermore, storing into file and reading from file are possible. Software can be downloaded from http://www.noptel.fi
5.2
CM_Win.exe
This Windows program is dedicated for simple graphical representation of the measurement results with the CM or CMP sensors. It may have some problems in Win2000 in the serial port handling. In Win 95/98 and XP it should work well. The program operates in both ASCII and Binary mode, and it was designed exclusively for experiment use. Software can be downloaded from http://www.noptel.fi PROGRAM MENUS: CM Win: The CM Win menu is dedicated for communication and measurement settings and event handling. The user is able to change COM port number, measuring interval, filtering and sounds for distance, speed, and acceleration. In the events table the user can set limits for measurement. If the measured distance is within these limits, the software will give a sound signal or run the program the user has selected. ____________________________________________________________________________________ CM5, CMP51, CMP52 and Speeder X1 TECHNICAL MANUAL Page 17/28
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Views: The Views menu is dedicated for selecting different display methods. Metre displays show the distance, speed, and acceleration, which also have their own chart displays. Reports: The Reports menu is dedicated for printing and saving session measurements.
5.3
HyperTerminal
Hyper terminal (or other similar terminal software) can be used to see the measurement results in a ASCII form, to change parameter settings, to select operation mode, and to save the data. Follow the instructions of the software supplier. The connection works in all Windows systems, 95/98/2000/XP, etc. The user is able to control the sensor in HyperTerminal by defining the communication parameters according to sensor parameters and by selecting the used COM port in File/Properties. The connection is activated and deactivated by Call and Disconnect. Measurement data recording starts after defining the file name in Transfer/Capture text where recording can also be stopped. Definitions can be stored and later on recalled automatically.
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6 TYPICAL TECHNICAL SPECIFICATIONS
Distance range 1) Distance range 2) Beam divergence Linearity @3 - 30 m, R=10% Precision, single shot 3) Repeatability 4) Temperature drift Long term stability Operating temperature Supply voltage 8) Power consumption, 9) @ full speed Measuring rate 5) Wave Length Weight Protection
6)
Size (H/L/W) Laser class 7) Interface RS-232 or RS-422
2) 3)
4) 5) 6) 7) 8) 9) 10) 11)
CM5
CMP51
CMP52
[m]
4 – 100 ER: 4 - 150 4 - 380 1.9 ± 50 5 - 20 1-5 10 10 -20 - +50 10 - 30.0
1 – 58 ER: 1 - 92 1 - 380 6.0 ± 50 5 - 20 1-5 10 10 -20 - +50 10 - 30.0
1 – 50 ER: 1 - 75 1 - 380 16 ± 50 5 - 20 1-5 10 10 -20 - +50 10 - 30.0
1 - 380 18 x 12 ± 50 5 - 20 1-5 10 10 -20 - +50 10 - 30.0
2.4
2.4
2.4
Up to 5 ER: 2 905
Up to 2
Nitrogen filled IP67 36x79x78 1 1 1 1 0…4
905 316 Nitrogen filled IP67 36x79x78 1 1 1 1 0…4
1 1 1 0…4
1 1 1 0…4
[m] [mrad] [mm] [mm] [mm] [mm] [mm] [°C] [V] [W]
2.4
[kHz]
Up to 5
[nm] [g]
[V]
905 364 Nitrogen filled IP67 36x135x78 1 1 1 1 0…4
Up to 5 ER: 2 905 333 Nitrogen filled IP67 36x93x78 1 1 1 1 0…4
[V]
1 1 1 0…4
1 1 1 0…4
[mm] 10)
Digital Input Digital Output Analogue Output (option) LAN or WLAN (option) 11 Digital Input Digital Output Analogue Output (option)
1)
Unit
Speeder X1 2 - 75
Natural surface with 28% reflectivity (R). Minimum distance can be down to 0.5 m but it can reduce the accuracy. With a target of R>90% (white surface) the measuring range is x1.7. ER-versions are available as an option. The distance ranges are up to 150 m with R = 28%. Reflector or prism Depending on the distance to the target and target reflectivity Precision depends on averaging by multiplier 1/√N. N = quantity of measurements Depending on the measurement speed and target Higher measuring rates are available as an option Wavelength of the optional laser pointer is about 650 nm Optional laser pointer is of laser class 3R Minimum power consumption is at 15V. Pointer on 0.2 W more is needed RS-232 and RS-422 is factory settable parameter option LAN and WLAN are hardware options
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7 DIMENSIONS Basic dimensions of each sensor type are presented in following drawings. Detailed dimensional drawings are available on request from Noptel. CM5
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CMP51
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CMP52
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Speeder X1
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8 HANDLING AND MAINTENANCE The sensor is protected against environmental hazards, (rain, dust, snow, vibration, etc.), but as an optoelectronic equipment it requires careful handling and maintenance. Sunshine and rain protection The sensor has to be protected from direct sunshine and rain. Water on the lenses reduces the power of measuring signal.
ESD protection An extra protection near the sensor is needed at outdoor assemblies.
Storage When the system is not in use, it is recommended to keep the equipment in a safe place, protected from dust, moisture and mechanical shocks, or when it is not possible remove the sensors from their installation bases and keep them in their own protective covers.
Cleaning the optical surfaces When starting measurement, it is recommended to clean the optical surfaces from dust and moisture, which might appear during transportation or storage.
Handling The sensor includes optical parts, electronics, and precision mechanism. Handle the sensor with care, do not drop it on the ground, and avoid all unnecessary mechanical shocks to the sensor.
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Connectors and cable The sensors have an electrical connector on the rear panel. The connector is of rugged type and weatherproof. Avoid dust and moisture penetrating into the connector and causing bad connection in the signal lines. It’s strongly recommended to turn the cable downwards as near to the sensor as possible so that trickle water doesn’t penetrate into the connector (see Fig. 14).
Fig. 14.
Recommendation of the cable curvature.
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Limited Warranty The product has been thoroughly tested and inspected before shipment. All parts (excluding accumulators) are warranted to be free of defects in material and workmanship for one (1) year from the date of the shipment.
The Warranty is always subject to the concurrence of the following three conditions:
(1) No claims under this Warranty will be honoured unless notice of a defect affecting any specific item of Products is given to Noptel within the warranty period; and (2) Any specific item of Products considered by the Buyer to be covered by this Warranty shall be returned, at the Buyer’s cost, to Noptel Oy together with a copy of sale document showing the date of purchase within one (1) month from the day of notice as set out above; and (3) Noptel Oy shall find such an item of Product returned to Noptel Oy as set forth above defective due to faulty workmanship or use of defective materials.
If Noptel Oy finds the Product to be defective, Noptel Oy’s liability under this Warranty is limited to repair or replacement of the Product free of charge, Ex Works (EXW), Oulu, Finland, or credit for an amount equal to the invoiced value of the defective Product.
When sending a Product for the repair, please attach an explanation of the defect to the shipment in order to expedite and facilitate service. This Warranty excludes all consequential damages. The Warranty will terminate, if an unauthorised person opens the sensors during the warranty period. This Warranty does not cover defects caused by misuse or improper handling, installation or maintenance of the products. Always follow the rules and hints for the proper handling and maintenance given by the manufacturer. The sensors contain no user serviceable parts. Manufacturer or dealer is not liable for damages caused by erroneous measurements or inadequate treatment.
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Notes
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DISTANCE SENSOR CM5, CMP51, CMP52 and Speeder X1 TECHNICAL MANUAL
Contact information Noptel Oy Address: Tel.: E-mail: Technical support:
Teknologiantie 2, FI-90590 Oulu, Finland +358 40 181 4351
[email protected] Web site: www.noptel.fi
