Laser-Distance-Sensor - Iberica de Automatismos
Laser-Distance-Sensor - Iberica de Automatismos
Laser-Distance-Sensor - Iberica de Automatismos
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Features<br />
SynchronousdatarecordingwiththeIF2004<br />
With the IF2004 PCI interface card, which is available as an<br />
accessory, the data from up to four sensors can be<br />
synchronously read via aFIFO memory.Readings from an<br />
enco<strong>de</strong>rorlinearmeasurementsystemasthefourthchannel<br />
canbeusedtomapuptothreeLDS85sensors.<br />
Synchronous data recording withtheIF2004<br />
interfacecard<br />
IF2004<br />
enco<strong>de</strong>r<br />
upto 4sensors<br />
Synchronizationoftwosensors<br />
Simultaneousmeasurementusingtwosensorsisnecessary<br />
inor<strong>de</strong>rtoobtainpreciseresults,withthicknessordifferential<br />
measurements,whenthetargetismovingoroscillating.The<br />
LDS85seriessupportsthisfunction,whereonesensoracts<br />
as the master and provi<strong>de</strong>s the clock for the slave.<br />
Consequently, the measurements are always synchronous<br />
andthereforesupplyexactmeasurementresults.<br />
Synchronization oftwo sensors<br />
sensor 1 sensor 1<br />
t d<br />
Highflexcablesratedformovingcabletracks<br />
The type EL-PC 85-xx cables are rated for operation in<br />
movingcabletrackswithaminimumcablebendingradiusof<br />
80mm.<br />
Analoganddigitaloutputs<br />
Withtwoanalogueoutputsignals0...10Vand4...20mAas<br />
well as the serial RS422 interface, the LDS 85 range of<br />
sensorsfulfilsallinterfacerequirements.Thebaudrateofthe<br />
RS422 can be set in standard steps from 9,600 to 115,200<br />
baud. This allows adirect communication to aPLC or any<br />
other host. In addition the dataformat of the serial interface<br />
canbechangedfrombinarytoASCIIcharacteroutput.<br />
Wi<strong>de</strong>inputrange(11...30VDC)<br />
The 11 ... 30 VDC supply also enables operation in 12 V<br />
networks or direct supply from a car's on-board power<br />
supply.<br />
real<br />
thickness<br />
LDS85 with<br />
simultaneoussynchronization<br />
sensor 2 sensor 2<br />
t<br />
error<br />
Commonsensorwith<br />
typicalmeasurement<strong>de</strong>lay<br />
t<br />
Adjustablefilterfunctions<br />
Toachieve the best results for each application,<br />
three different filter functions can be applied to the<br />
measurementresults.<br />
The recursive mean works similar to an analog<br />
low-passfilter.<br />
The moving average enables ahigh dynamic<br />
responseevenwithfiltering.<br />
The median filter is especially suitable for<br />
surfaceswithrandomfalsereadings.<br />
Allfiltersettingsdonotreducetheoutput frequency<br />
(datarate)oftheanaloganddigitaloutputs.<br />
3.5<br />
3<br />
2.5<br />
2<br />
1.5<br />
1<br />
0.5<br />
0<br />
3.5<br />
3<br />
2.5<br />
2<br />
1.5<br />
1<br />
0.,5<br />
oszillation(original)<br />
200<br />
400 600<br />
positionsignal<br />
800<br />
oszillation<br />
moving average (N =128)<br />
1000<br />
8.5<br />
0 200 400 600 800 1000 0 200 400 600 800 1000<br />
positionsignal<br />
positionsignal<br />
11<br />
10.5<br />
10<br />
9.5<br />
9<br />
8.5<br />
0<br />
11<br />
10.5<br />
10<br />
9.5<br />
9<br />
200<br />
profile (original)<br />
400 600<br />
positionsignal<br />
profile<br />
median(N =9)<br />
800<br />
1000<br />
05
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