简单介绍
multilaserml5760系列激光料位计 small size high reliability high interferenceimmunity high accuracy long range quick data acquisition highlycollimated measuring beam excellent cost / performancerat
multilaser ml5760系列激光料位计  的详细介绍
multilaserml5760系列激光料位计
applications
measurementof distance is fundamental to hundreds of industrial, defense, andconsumer needs. of course, the measurement of level isa distance measurement. 
withranges extended up to a mile or more or as short as small fractionsof an inch, they typically find applications in such disparatefields as collision avoidance systems, military target ranging,tanker car load-out, truck positioning, robotics, laser measuringtapes and industrial level control.
combine\'sexpertise and emphasis is level measurement, however, we can and doaddress a wide range of laser applications. 
toaccurately measure distance, the time required for light to make around trip between the measuring device and the object ismeasured.  combine offers two different lasermeasurement methods.  
theright choice for your application is dependent upon a variety ofparameters. 
time of flight approach
keyfeatures of a pulsed laser sensor
principles:
       time-of-flightmethod
       near-infraredwavelength
       pulseddiode laser transmitter
       sensitivenarrow-band optical receiver
       singlepulse or multiple pulse signal detection
       microprocessor-basedpost-processing and interfacing
       asfar as appropriate: opto-mechanical scanningmechanism
advantages
       smallsize
       highreliability
       highinterference immunity
       highaccuracy
       longrange
       quickdata acquisition
       highlycollimated measuring beam
       excellentcost / performance ratio
trade-off:
reductionof the maximum range due to:
       verybright daylight
       badvisibility
       dirtyor dusty front lenses
twostandard units available fromcombine are
multilaserm403            multilaser m403-gf
thesimplest, conceptually, is the time-of-flight approach thatmeasures the elapsed time between when a short pulse of lightleaves the instrument and when the returning reflected or scatteredpulse is detected.
phase modulation approach (hand-held)
conceptuallymore complex, but electronically simpler, is to measure the phaseof a modulated light beam when it leaves the instrument, and thencompare that phase to the phase of the returnlight.
principlesof operation
there are three physical properties of laser light that can beexploited in the measurement of distance:
light travels in a straightline.  
this property makes feasible a variety of possible geometricmethods for measuring distance, most of which depend on some formof triangulation. these methods are limited in that they require atleast two spatially separate referencepoints.
laser light is coherent.  
the use of diffraction (destructive and constructive interference)of the light is an excellent method for measuring very shortdistances (inches or less) with sub-micron accuracy. the technique,however, is not easily usable for greaterdistances.
light propagates through space with a very well-knownvelocity.
in principle, this offers an extremely accurateway to determine distances of any required length. it istechnically difficult, though, to accurately time thedeparture/return of a light pulse traveling ~ 1 ft/ns. resolutionof 1/8 in., e.g., requires a temporal accuracy of ~10 ps.

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珠海康宝莱仪表有限公司
程先生
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人民西路华达工业区8栋