Automatic foreign body checking machine with double-photo signal receiving sensor array structure
A receiving sensor and foreign matter inspection technology, which is applied in the field of fully automatic online detection devices, can solve the problems of foreign matter missing detection and detection efficiency reduction, and achieve the effect of improving signal-to-noise ratio and eliminating missed detection
Inactive Publication Date: 2010-05-19
SHANGHAI INST OF LASER TECH
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Problems solved by technology
[0003] In order to overcome the shortcomings of the existing automatic foreign object inspection machine due to the existence of the photosensitive tube array as the insensitive area of the optical signal receiving element, which causes the omission of detection of foreign objects and the decrease in detection efficiency, the present invention provides a dual optical signal receiving sensor array. Array Structure Automatic Foreign Matter Inspection Machine
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[0016] Depend on figure 1 , figure 2 As shown, an automatic foreign matter inspection machine with a dual light signal receiving sensor array structure, which is sequentially equipped with a light emitting tube assembly 1, a light emitting light collecting mirror 2, a light receiving light collecting mirror 4, and an imaging mirror 5 from left to right 1. The first light-receiving sensor array 7, the sealed container 3 containing the transparent or translucent liquid of the liquid to be tested is placed on the intermittent rotating body between the light-emitting light-collecting mirror and the light-receiving light-collecting mirror, and its characteristics are:
[0017] A. There is a first light barrier 9 in front of the first photoreceiving sensor array 7;
[0018] B. be provided with 45 degree semi-reflective semi-transmissive beam splitters or beam splitting cube prism 6 between described imaging mirror 5 and first diaphragm 7;
[0019] C. The light beam emitted by the...
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The invention discloses an automatic inspection machine of the array structure of twin-optical signal receiving sensor, it is installed with luminotron components, light emission collecting lens, light receive collecting lens, imaging mirror, the first optical receiving sensor array from left to right, it contains a liquid container set on the intermittent revolving solid between the light emission collecting lens and light receive collecting lens, it is characterized in that a beam splitter was set between the imaging mirror and the first light column; the imaging beam pass through the beam splitter and was divided into two parts: direct and reflection parts, the direct part was received by the first optical receiving sensor array, the reflection part was received by the second optical receiving sensor array, making up the twin-optical signal receiving sensor array structure to detect the foreign material. Adopt the twin-optical signal receiving sensor structure, set light column before the twin-optical receiving sensor array, choose the same twin-optical receiving sensor array device and mismatched installed, ensure that all the optical signal was received without missing, no foreign body missed been detected, improves signal to noise ratio and sensitivity of the system with the installation of slit light column.
Description
technical field [0001] The invention relates to a fully automatic on-line detection device for quality detection of liquid products such as transparent or translucent oral liquids, ampoules and infusion bottles on a pharmaceutical production line, in particular to an automatic foreign matter inspection machine with a dual optical signal receiving sensor array structure . Background technique [0002] The automatic foreign matter inspection machine is a fully automatic online inspection device for quality inspection of liquid products such as transparent or translucent oral liquids, ampoules, and infusion bottles on the pharmaceutical production line. The use of photosensitive tube arrays as optical signal receiving elements is a commonly used structural method. However, the photosensitive tube array device is composed of dozens of photosensitive tubes, and there is an insensitive area (blind area) between the photosensitive tubes. The existence of the insensitive area cause...
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IPC IPC(8): G01N21/90
Inventor 乐卫俭
Owner SHANGHAI INST OF LASER TECH