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SF30

SF30

Accelerated rangefinder 

Product manual

SF30 Accelerated laser rangefinder - Product Manual - Revision 5 

 of 

© LightWare Optoelectronics (Pty) Ltd, 2015

1

15

The SF30 is a high speed, light weight 

laser rangefinder for mapping and 

obstacle detection by robotic 

vehicles such as UAVs.  

The SF30 can take up to 18316 

readings per second and can be 

incorporated into scanning systems to 

create 2D SLAM maps or 3D images. 

The configurable features and 

multiple hardware interfaces make 

the SF30 easy to connect with 

different types of controllers. 

The SF30 uses a time-of-flight system 

to make very fast and accurate 

distance and speed measurements to 

natural or artificial surfaces. 

Features:

Very fast update rate of 18316 readings per 
second on all models.

Measuring range > 100 m (SF30/C only).

Configurable to measure distance or speed.

Serial port, analog voltage, alarm and USB 
interfaces.

USB port to change the alarm set-point, update 
rate and resolution.

The host controller can change settings on the fly 
via the serial port.

Compact and lightweight - 35 grams.

Easy to configure using the built-in menu and 

LightWare Terminal

 software.

Fully calibrated and ready to run.

Accurate, reliable measurements in sunlight or 
dark conditions.

Not affected by: speed; wind; changes in 
barometric pressure; noise; ambient light; terrain 
or air temperature.

Содержание SF30

Страница 1: ...The SF30 uses a time of flight system to make very fast and accurate distance and speed measurements to natural or artificial surfaces Features Very fast update rate of 18316 readings per second on all models Measuring range 100 m SF30 C only Configurable to measure distance or speed Serial port analog voltage alarm and USB interfaces USB port to change the alarm set point update rate and resoluti...

Страница 2: ...SF30 14 Disclaimer Information found in this document is used entirely at the reader s own risk and whilst every effort has been made to ensure its validity neither LightWare Optoelectronics Pty Ltd nor its representatives make any warranties with respect the accuracy of the information contained herein 1 Overview 3 2 Quick start guide 4 3 Powering up the SF30 6 4 Communicating with the USB port 7...

Страница 3: ... embedded host controller Synchronisation A logic level signal that provides a time marker for the serial port data Analog port An analog voltage proportional to the distance reading Alarm A logic level signal that warns when the distance measured is below a preset value USB port Connects to a Terminal application on a PC to allow settings to be entered Readings can be taken as isolated snapshots ...

Страница 4: ...software and click the Connect icon to open a communications port 5 If the connection isn t made automatically click the Laser icon and select the correct USB port from the list shown 6 Press the SPACE key to display the main menu This menu includes a list of all the settings that can be changed in the SF30 7 Menu item number 1 Active data port selects which port will output the distance data The ...

Страница 5: ...update rate 0 25 m 1 18316 sec Sets the rate at which the analog port and the alarm signal are updated with distance readings The actual value may be lower than the entered value depending on the setting 2 Resolution Smoothing filter Only whole number fractions of 18316 will give an exact match between the entered and actual values 0 12 m 1 9158 sec 0 06 m 1 4579 sec 0 03 m 1 2289 sec Filter 1 228...

Страница 6: ... directly from the USB port of a PC or laptop This is particularly useful for testing the SF30 before it is installed in your system and also for changing the settings in readiness for the final application Figure 3 Power from the USB port Power supply option 2 Regulated 5 V DC The second power supply option is to connect a regulated voltage of 5 10 V DC to the main connector If the power wires ar...

Страница 7: ...When connected to a PC with the USB cable it is convenient to have the results displaying in the Terminal window Results are available in the following formats distance in m distance plus speed in m s speed in m s speed in kph or analog voltage The results from the analog port are displayed continuously while the SF30 is running Serial option When connected to a host controller the results should ...

Страница 8: ...rom 9600 to 921600 If the baud rate is set too low there won t be enough time for the data to complete a transmission before the next result is ready A warning notice is given if this situation occurs Both the transmitted data and any received commands are at the same baud rate Data format Conversion to distance in meters Byte_L Byte_H Distance or speed Byte_H Byte_L 256 Setting Values Description...

Страница 9: ...nged on the fly and a serial port command set is provided for this purpose These commands will allow changes to a subset of the settings available through the USB port Serial port commands are sent as ASCII encoded characters and are formatted as follows Annnnn where indicates the start of a command A indicates the command mnemonic nnnnn indicates additional values where necessary indicates the en...

Страница 10: ...ower than the entered value depending on the setting Rn resolution Only whole number fractions of 18316 will give an exact match between the entered and actual values 0 12 m 1 9158 0 06 m 1 4579 0 03 m 1 2289 Filter 1 2289 Gn 0 256 m 1 128 m 2 64 m 3 32 m 4 16 m 5 8 m Selects the maximum distance that produces 2 56 V on the analog port This value changes the scale of the analog output Annn 0 5 254...

Страница 11: ...e selection changes the value in meters that equates to 2 56 V This can be either 256 m 128 m 64 m 32 m 16 m or 8 m depending upon the requirements of the application Setting Values Description 5 Analog port update rate 0 25 m 1 18316 sec Sets the rate at which the analog port and the alarm signal are updated with distance readings The actual value may be lower than the entered value depending on ...

Страница 12: ...eadings to make them more readable in the Terminal window The USB port also has a number of hot keys that allow for immediate control of certain functions as described below Press X on the keyboard to clear the alarm signal latch Press Y on the keyboard to start the laser firing Press N on the keyboard to stop the laser from firing Setting Values Description 7 Alarm activation distance 1 5 m 254 m...

Страница 13: ...0 There are no user serviceable parts and maintenance or repair must only be carried out by the manufacturer or a qualified service agent No regular maintenance is required for the SF30 but if the lenses start to collect dust then they may be wiped with suitable lens cleaning materials Make sure that the SF30 is switched OFF before looking into the lenses The SF30 should be mounted using the four ...

Страница 14: ... 0 10 m 70 reflective target 20 C Power supply voltage 5 0 V 0 5 V DC 5 0 V 0 5 V DC Power supply current 250 mA maximum 250 mA maximum Outputs interfaces Serial analog Serial analog Dimensions 30 x 56 5 x 50 millimeters 30 x 56 5 x 50 millimeters Weight 35 grams excluding cables 35 grams excluding cables Connections Plug socket micro USB Plug socket micro USB Laser power 20 W peak 11 mW average C...

Страница 15: ...ationship between update rate and resolution pages 5 8 10 11 Rev 4 2015 11 09 TLP The amendments to this manual are applicable to SF30 serial numbers SF30 00470 onwards Reformatted the 8 Alarm latch command X to X pages 5 10 12 Added new serial commands N and Y page 10 Added new keyboard hotkeys X Y and N page 12 Updated the minimum update rate for the serial analog and USB ports to 1 reading per ...

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