Thickness measurement
厚度測(cè)量
Research & development
For thickness measurement, OPTIMESS laser triangulation sensors, OPTISCAN laser triangulation scanners or light section sensorsOPTIMESS shadow measuring systems are used. The advantages of the laser measuring technique in the field of thickness measurement are:
l no material contact
l Independent of the colour of the material by control of the laser power
l independent of the composition of the material
l high local resolution due to small measuring spot
l high measuring frequency (up to 50 kHz)
l great distance from material possible In measurements on hot surfaces possible
研究和發(fā)展
對(duì)厚度測(cè)量，可采用OPTIMESS激光三角測(cè)量?jī)x、OPTISCAN激光三角掃描儀或光切傳感儀和OPTIMESS影子測(cè)量系統(tǒng)，這些厚度測(cè)量技術(shù)主要優(yōu)勢(shì)體現(xiàn)如下：
l 非接觸測(cè)量
l 可控制激光功率，測(cè)量不受材料顏色影響，
l 不受材料成分影響
l 小光斑、高分辨率
l 高速測(cè)量，頻率達(dá)50KHz
l 對(duì)熱表面材料，可以遠(yuǎn)距離測(cè)量
Thickness measurement (singlemulti-track)
The thickness measurement is performed directly at the point where the laser beam hits the object in the case of stationary objectsalong the line which the laser point projects onto the material in the case of measuring objects passing by underneath the sensor. The measurement can be made as a reference measurement with one sensor or As a thickness measurement with two sensors per measuring track. C-brackets, 0-frames or complete measuring modules with automatic calibrationtheir own drive belts are available as measuring frames.
厚度測(cè)量（單軌和多軌）
厚度測(cè)量通過激光光束直達(dá)被測(cè)對(duì)象表面，并在線檢測(cè)在激光傳感器下運(yùn)行的被測(cè)對(duì)象。單傳感器可參考測(cè)量厚度，雙傳感器可實(shí)單軌、C拱、O幀或*測(cè)量模式，測(cè)量架可自動(dòng)校準(zhǔn)并且自行驅(qū)動(dòng)傳送帶。
Linear thickness measurement (scanning or traversing)
This thickness measurement takes place with OPTISCAN laser scanners or light-section sensors or over greater widths with a traversing mechanismtwo punctiform OPTIMESS laser sensors. The lateral position is picked up as an additional value apart from the distance information by the laser scanners so that the thickness or the thickness profile along the scanned line is recorded. Over smaller widths the laser scanners or light-section sensors offer the advantage that no additionally moved parts are necessaryscanning frequencies of about 20 Hz are possible. On the other hand, the traversing mechanics, designed as a C-frame, offer the possibility of reaching measuring widths up to 5 metres.
在線厚度測(cè)量（掃描和方向機(jī)）
厚度測(cè)量可以采用OPTISCAN激光掃描儀、光切傳接器、或者帶雙OPTIMESS激光傳感器方向機(jī)的超寬測(cè)量。激光掃描儀在線記錄側(cè)面位置和厚度狀態(tài)。
窄物體測(cè)量，激光掃描儀或光切傳感器無(wú)不需運(yùn)動(dòng)器件，掃描頻率達(dá)20Hz.
另外，設(shè)計(jì)為C架式的方向機(jī)，測(cè)量寬度高達(dá)5米。
Thickness measurement according to the shadow principle
In the shadow principle with OPTILINE sensors a laser line of parallel light is generatedprojected on a CCD line opposite. When a material Is Inserted In the measuring gap this leads to a partial shadowing of the laser line on the detector. For thickness measurement it is necessary for the material to be measured to be deflected by a roller. The difference between the roller (zero)the material surface picked up by the shadow measurement system is the material thickness.
影子原理厚度測(cè)量
根據(jù)影子原理的OPTILINE激光儀收集平行光并映射到CCD。當(dāng)被測(cè)對(duì)象置于測(cè)量間隙，檢測(cè)激光陰影。厚度測(cè)量要測(cè)量被測(cè)對(duì)象在滾筒上編移，以滾筒為零點(diǎn)，測(cè)量滾筒陰影與被測(cè)物陰影差為被測(cè)物的厚度。
(瑞士EL*公司北京代表處 供稿)
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