178 results about "Optical identification" patented technology

The invention provides an oral implant navigation method and system and a storage medium, after an optical locator is fixedly arranged on an implant mobile phone, three-dimensional data of a rotating shaft of the implant mobile phone, the tail end of the rotating shaft and a spherical drill on an optical three-dimensional coordinate system of the optical locator are obtained, and a registration pit is used as a medium to obtain a three-dimensional coordinate system of the implant mobile phone; and positioning three-dimensional data of the three-dimensional coordinate system in the optical three-dimensional coordinate system, registering the three-dimensional data of the pits on the CT three-dimensional coordinate system to complete registration, calculating the pose of the tip of the drill point and the pose of the ideal path under the positioning three-dimensional coordinate system, and performing real-time navigation on the planted mobile phone according to the difference between the tip of the drill point and the ideal path. An optical positioning instrument is fixedly arranged on the planting mobile phone, and while the planting mobile phone is used for drilling operation, image data of the optical identification points are collected through the optical positioning instrument for real-time navigation; the optical positioning instrument and the planting mobile phone are integrally connected, so that the process of positioning the planting mobile phone in real time can be omitted, and navigation errors are effectively reduced.

The invention relates to the technical field of electronic manufacturing, in particular to a PCB SMT mounting method and system based on optical recognition, and the method comprises the steps: carrying out the datum point collection of a pre-confirmed circuit board, obtaining an actual datum point image, carrying out the deviation calculation through employing a theoretical datum point image and the actual datum point image, obtaining an offset, obtaining a plurality of qualified mounting elements, and carrying out the recognition of the qualified mounting elements. The method comprises the following steps: carrying out offset analysis on qualified surface-mounted components to obtain a component center coordinate offset value, carrying out movement compensation on surface-mounted coordinates by utilizing the offset and the component center coordinate offset value to obtain target surface-mounted coordinates, and carrying out surface-mounted on a plurality of qualified surface-mounted components corresponding to a plurality of target surface-mounted coordinates based on the plurality of target surface-mounted coordinates. And carrying out continuous tin defect detection on the surface-mounted circuit board, and taking the surface-mounted circuit board of which the defect score is greater than a defect score threshold as a finished product circuit board. According to the invention, the problems of positioning deviation and tin connection welding quality defects during circuit board mounting can be solved.

The invention relates to the field of crystal detection, and discloses a multifunctional comprehensive scintillation crystal and semiconductor material energy spectrum test system, which comprises a crystal adaptation module for judging the type and size of a placed crystal through an optical identification and parameter matching mechanism, and a signal acquisition module for amplifying, filtering and digitally processing an acquired signal, the signal correction module is used for correcting waveform distortion and baseline drift through a dynamic gain adjustment algorithm of a low-noise pre-amplifier and a multi-channel pulse analyzer; the data analysis module is used for generating an energy spectrum curve according to input signals and calculating energy resolution, counting rate, light attenuation time or carrier mobility, and the environment calibration module is used for dynamically evaluating shading degree, environment light, temperature and electromagnetic interference through an optical sensor and a temperature and humidity detector in the camera obscura and outputting updated calibration parameters. The method has the advantages of improving the detection efficiency, precision and consistency.

The invention relates to the technical field of optical recognition, and further relates to an unmanned aerial vehicle self-adaptive target recognition method and system based on optical detection, and the method comprises the following steps: 1, collecting a pair of visible light image frames and infrared image frames at the same time point to form an image frame pair, and carrying out the alignment preprocessing of the image frame pair to obtain an aligned frame pair; step 2, based on the aligned frame pair, respectively generating a neutral comparison graph corresponding to the visible light image frame and a neutral heat graph corresponding to the infrared image frame, and generating a topological manifold graph based on the neutral comparison graph and the neutral heat graph; 3, threshold segmentation is executed in the neutral comparison graph and the neutral heat graph, screening is carried out in combination with geometric and spatial constraints, and a candidate set is obtained; and if the judgment is passed, outputting an identification result according to the shape trunk characteristics. According to the method, the recognition accuracy, robustness and practical value are remarkably improved in a complex background and a dynamic environment.

The invention discloses a motor insertion piece positioning detection method using optical recognition, and particularly relates to the technical field of motor manufacturing and detection. Collecting a high-resolution image containing the insert structure; carrying out image gray level enhancement and reflection interference suppression; extracting insert edge gradient information, and constructing an insert boundary point set; fitting the profile of the insert according to the boundary point set, and correcting the profile through a shape prior model; extracting barycentric coordinates and center positioning features of the inserts, calculating offsets delta X and delta Y and an angular deviation theta, and constructing a position offset vector V; the V is compared with a set tolerance model T, and whether the insertion piece is qualified or not is judged; an error distribution thermodynamic diagram is generated based on the offset data of the multiple punching sheets, and trend evaluation of the mold state and the material stability is achieved; according to the method, high-precision, full-automatic and visual detection of the sheet inserting position can be realized, and the sheet punching quality control level is improved.

The invention provides a PDF (Portable Document Format) optimized translation method based on intelligent text detection, which comprises the following steps of: 1, analyzing a PDF document, respectively identifying a text region and an image region in the PDF document, and extracting a native text block of the text region in the PDF document and structured position information of the native text block; the recognition result and the native text block are combined into a unified structured data set; 3, performing machine translation by adopting a window translation strategy in combination with the context, and extracting a target translation; adjacent text blocks are dynamically associated during translation, and a target text range is defined through boundary markers; and 4, dynamically optimizing the text layout according to the target translation length, and backfilling a translation result to an original position. According to the method, the translated text can be accurately and seamlessly backfilled to the corresponding position of the original image, meanwhile, the content of the original image is ensured not to be shielded, and visual disorder or information loss caused by text coverage is avoided.

The invention belongs to the technical field of optical fibers, and relates to an optical fiber ribbon easy to optically identify and detect and a manufacturing method. The optical fiber ribbon comprises a plurality of optical fibers and an adhesive tape, the plurality of optical fibers are arranged side by side and are in line contact in sequence, and the plurality of optical fibers are connected through the adhesive tape to form the optical fiber ribbon; the projection of the adhesive tape in the thickness direction of the optical fiber ribbon comprises a first corrugated line and a second corrugated line, the first corrugated line and the second corrugated line extend in a corrugated shape in the length direction of the optical fiber ribbon, and the two ends of the first corrugated line are connected with the two ends of the second corrugated line at the contact line of the optical fiber. And a corrugated identification loop is defined. The optical fiber ribbon provided by the invention has the effect of being easily optically identified and detected.

The invention provides a silver gray electromagnetic shielding copper foil and a preparation method thereof, and the preparation method of the silver gray electromagnetic shielding copper foil comprises the following steps: providing a to-be-treated copper foil, and sequentially carrying out surface oil removal and acid solution cleaning processes on the to-be-treated copper foil to obtain a treated copper foil; providing a blackening treatment solution, and soaking the treated copper foil in the blackening treatment solution for blackening treatment to obtain a blackened copper foil; the blackened copper foil is put into a metal plating solution to be subjected to surface electroplating treatment, so that a silver gray magnetic shielding alloy layer is electroplated on the surface of the blackened copper foil, and an electroplated copper foil is obtained; the electroplating copper foil is subjected to anti-oxidation treatment, so that a protective film is formed on the surface of the electroplating copper foil, and the silver gray electromagnetic shielding copper foil is obtained.The silver gray electromagnetic shielding copper foil prepared through the method has the unique silver gray appearance on one face or two faces, meanwhile, the passive intermodulation performance is good, and the shielding performance is good; and the requirements of an automatic assembly line optical identification positioning system on the appearance and electronic equipment on the electromagnetic shielding performance are met.

The present invention provides a system and method for generating and identifying identification codes for aluminum alloy formwork for construction. By using the side ribs of the aluminum alloy formwork as the optical recognition target and setting identification holes on the side ribs, encoding can be performed based on the positions of the respective identification holes. As a result, during subsequent use, it can adapt to high-frequency impact, high-temperature, and corrosive environments. The identification holes will not fall off, have little impact on deformation, are not easily worn or corroded, and have good adaptability to the maintenance of the aluminum alloy formwork. Moreover, by combining weight information and optical information for encoding, the encoding capacity can be significantly increased, facilitating the management of the aluminum alloy formwork. At the same time, by using the opened identification holes as the basis for encoding, it has good fault tolerance and can adapt to surface wear and a certain degree of deformation of the aluminum alloy formwork. Finally, the present invention is inexpensive, safer, more reliable, and has lower costs.

The utility model provides a multifunctional planting mobile phone calibration device, which comprises a supporting bottom plate, a calibration panel and an optical identification mark image, and is characterized in that the supporting bottom plate is inwards sunken to form a fixed sunken part; the calibration panel is a glass panel, and the calibration panel is nested in the fixed concave part; a plurality of optical identification mark images are arranged, and the plurality of optical identification mark images are arranged on the calibration panel; the conical calibration assembly, the outer diameter calibration assembly, the ball head calibration assembly and the drill bit length calibration assembly are formed on the calibration panel. Compared with the prior art, the technical scheme has the beneficial effects that the planting mobile phone can be comprehensively calibrated based on the conical calibration assembly, the outer diameter calibration assembly, the ball head calibration assembly, the axial calibration assembly and the drill bit length calibration assembly, various calibration requirements are met through a simple structure, and the planting mobile phone calibration device has the advantages of being scientific in structure, complete in function and the like.

The invention relates to the technical field of PCB identification, in particular to an optical identification point manufacturing method of a PCB and an optical point structure, and the method comprises the following steps: S1, adding a process edge on a long edge of the PCB, and arranging the optical point structure on the process edge; s2, melting the tin bar in a tin cylinder through high temperature to form soldering tin alloy slurry of copper, tin and nickel in a proper proportion; and S3, the PCB is immersed in a tin furnace for a period of time, relevant parameters of a tin spraying machine and an air knife are adjusted to a proper range, and hot air leveling is conducted on the PCB. And S4, the PCB is taken out, whether the tin spraying thickness meets the requirement or not is checked, and if not, the air pressure of the tin spraying machine is adjusted. And S5, fixing the PCB which is processed and meets the requirement, and adjusting a lens to identify the PCB. Compared with the prior art, the copper optical points on the surface of the PCB are exposed through the solder resist windowing of the point A, the color of the base material below the point A is exposed, identification is convenient, the point B adopts the NPTH hole, the solder resist windowing is also used, and the point A and the point B control the tin thickness meeting the requirement through the tin spraying process.

A compact card handling device for use in casinos possesses a card input portal and two playing card discharge portals which are all accessible by a device operator. An optical recognition sensor cooperates with a microcontroller to interrogate the integrity of each card during an ongoing shuffling operation to discover unexpected cards, including unrecognized cards and flipped cards. Expected cards are randomized and accumulated into a stack whereupon those cards are thereafter delivered to a first discharge portal comprising a conventional multi-card shoe. Unexpected cards are immediately discharged to a second portal where they may be visually examined by the device operator while a shuffling operation continues. The input portal and the shoe are clustered conveniently upon the surface of a casino table while the bulk of the machine resides below the table surface.

The present invention relates to a shopping cart comprising a movable base, a basket, two or more cameras, one or more barcode scanners, two or more load cells and / or two or more weight sensors and a processing module; wherein the shopping cart comprises an inertial measurement unit (IMU), and wherein the two or more cameras are positioned and / or configured to define a field of view that is substantially above the basket of the shopping cart and / or wherein the load cells, weight sensors, or a combination thereof are positioned in the vicinity of the movable base. The invention also relates to a method for identifying a product to be purchased in a shopping cart substantially by means of two or more cameras and a method for identifying an item to be purchased in a shopping cart substantially by means of one or more barcode scanners.

The invention discloses europium-doped hydrotalcite for enhancing PVC (polyvinyl chloride) light transmission and a preparation method and application thereof, and belongs to the technical field of high polymer materials and inorganic nanomaterials. Trivalent europium (Eu < 3 + >) is doped into a lattice structure of LDHs (layered double hydroxides) through europium-doped coprecipitation, surface silanization and ultrasonic dispersion technologies; refractive index matching (1.50-1.53) is achieved, and light scattering is reduced. The particle size of the optimized hydrotalcite is controlled to be 50-150 nm, so that the light transmittance of the PVC composite film reaches 93% or above, and meanwhile, the PVC composite film has the characteristic of red fluorescence. Compared with the prior art, the material has the advantages that the transparency is improved, the heat-resistant stability and aging resistance of PVC are remarkably improved, the material is suitable for the fields of transparent films, daylighting panels, optical marks and the like, and the hydrotalcite nano material provided by the invention has the dual effects of refractive index matching and conversion from ultraviolet light to visible light; the light transmittance and the ageing resistance of the PVC material can be obviously improved at the same time.

Method for determining the need for cleaning of a commercial cooking appliance with at least one cooking surface, characterized by the steps: - Capturing at least one image of at least part of the cooking surface and / or at least part of a cooking product to be cooked or cooked by an optical recognition device, - Comparing the captured image of the cooking surface area with a pre-stored reference image of a dirty cooking surface requiring cleaning, and / or the captured image of the product to be cooked or cooked with a pre-stored reference image of the product in a state of cooking that indicates a need for cleaning the cooking surface, and - Decide, based on the result of the comparison, whether cleaning is necessary.

The invention relates to the technical field of artificial intelligence, and discloses an advertisement design drawing detection method and device based on machine vision, and the method comprises the steps: collecting an original image of an advertisement design drawing, carrying out the image enhancement of the original image, and obtaining an enhanced image; generating image features according to the generated gradient intensity and color channel histogram; feature scores of the image features are calculated one by one, feature weights corresponding to the image features are adaptively updated according to the feature scores, and updated weights are obtained; adjusting the enhanced image according to the update weight, and inputting the adjusted enhanced image into a preset classification model to obtain an image category of the adjusted enhanced image; performing optical identification on the original image, and performing compliance detection on the enhanced image according to an identification result and an image category; and generating a compliance report of the advertisement design drawing according to a detection result, and further correcting the advertisement design drawing. According to the invention, the efficiency of advertisement design drawing detection based on machine vision can be improved.

An automated control system for a glider towed by a tug employs a camera mounted on one of the aircraft to view the other (the “target”). An optical recognition system receives images from the camera and determines the relative range and bearing of the target. A controller determines corrections to the flight characteristics of the glider in response to the range and bearing data from the optical recognition system. An interface to the flight controls of the glider maintains the desired flight characteristics of the glider provided by the controller.

The utility model discloses a wafer optical identification device. Comprising a camera device, a light-emitting device, a circuit substrate and a light source refraction piece, wherein the camera device is used for shooting graphic and text information on a wafer semiconductor; the light-emitting device is provided with a plurality of light-emitting elements and is arranged at one side of the camera device; the circuit substrate can identify the graphic and text information and can control the light-emitting elements to act; the circuit substrate is arranged on one side of the light-emitting device and connected with the camera device and the light-emitting device, and the light source refraction piece is arranged on one side of the light-emitting device. When the image-text information on the wafer semiconductor cannot be clearly shot by the camera device due to the angle relation, the light source emitted by the light-emitting element on the light-emitting device is utilized to strengthen or optimize the light source where the image-text information is located after passing through the light source refracting piece, and a user can pass through the circuit substrate to obtain the image-text information. And the starting mode of the light-emitting element is changed according to the requirement, so that any light source problem related to graphic and text information can be solved.

The application provides a method and device for identifying a lesion range of a urinary system by using interference optics, and the method comprises the following steps: obtaining a polarized image corresponding to a multi-layer optical rotation tomogram by filtering through a polaroid, and generating an original polarization image containing interference fringes and tissue texture; performing line extraction, intersection removal, Gaussian mask and smoothing reconstruction processing on the original polarization image to generate an interference bright line image; according to the light and dark distribution of the interference bright line image, optical rotation calculation and Mueller matrix correction are sequentially performed to generate tissue optical rotation distribution data; and the lesion range is identified by matching the tissue optical rotation distribution data with a preset calibration sample. Through multi-wavelength orthogonal polarization interference and optical rotation accurate detection, the ability to distinguish flat lesions and inflammatory mucosa is improved from the root, and the lesion boundary identification accuracy and identification efficiency are significantly improved.

The invention provides an efficient crushing and sorting automobile metal recovery method and system, and relates to the technical field of automobile sorting, and the efficient crushing and sorting automobile metal recovery method comprises the steps that aiming at automobile metal recovery, an optical recognition system is used for determining optical sorting characteristics and crushing characteristics corresponding to alloy series categories; in combination with the characteristics, an integrated management module is constructed through a decision tree, and the integrated management module comprises an optical sorting unit and a crushing management unit; determining an initialization recovery strategy; and through process phase change and production line configuration characteristics, sorting verification compensation and parameter control conversion of the strategy are carried out so as to optimize the pre-recovery strategy. And finally, controlling metal recovery. By means of the method and device, the problems that in the prior art, due to the lack of an accurate recognition technology, the sorting efficiency is low in the metal recycling process, environment pollution is serious, and the resource recycling efficiency and sustainability are further affected can be solved. And different production environments and requirements can be met during recycling, the automobile metal recycling efficiency and purity are improved, and meanwhile environmental pollution is reduced.

The embodiment of the invention provides a handwriting system and a handwriting recognition method. The handwriting system comprises a writing surface, a handwriting pen and an electronic device, the writing surface comprises at least one optical identification code, and each optical identification code corresponds to one coordinate; the handwriting pen is used for determining a written target content according to a plurality of target optical identification codes passed by a user when the user uses the handwriting pen to write on the writing surface; the electronic device comprises a display screen, and the display screen is used for displaying the target content. According to the scheme, the writing track when the user writes the characters can be identified through the optical identification code on the writing surface, and the writing track can assist in identifying the written characters, so that the accuracy of handwriting identification is improved.

This invention discloses a particle cleaning device for the final testing stage of COF products, relating to the field of microelectronic packaging and testing technology. It includes a testing machine, with a fixed top plate mounted on top. The machine also has a roller, a first constant-force wheel, and a second constant-force wheel, with a yellow rubber tension wheel between them. An ion gun is also mounted on the machine, driven by the same set of air pumps. A blow-suction composite module and an optical recognition module are also detachably mounted on the machine. The machine is further equipped with an intelligent control terminal for adjusting the ion gun and the blow-suction composite module. During use, the dynamically adjustable servo nozzle of the ion gun works in conjunction with the precise blowing nozzle of the blow-suction composite module to fully cover the blind spots of the ion gun, effectively reducing the cleaning blind spots caused by particle shedding and contamination of the product.

A disposable flow-stop cartridge (1038) for medical infusion systems may include a top housing (1040) secured to a bottom housing (1042) and a tube-coupling slot that routes a tubing segment (1046). First (1052) and second (1050) links between the housings are pivotally coupled to move between an occluding position, in which a plunger on a first link may compress the tube against a backstop (1066), and a non-occluding position that may permit flow. Motion of the first link may be constrained by a guide (1070) that slides in a housing-formed track (1072). A distal identification section on the top housing may present a row of apertures (1060) arranged along a read direction for optical identification. Variants may include end-stop surfaces, an arcuate tube-coupling slot, a slider-type guide with U-shaped, T-slot, or dovetail tracks, an externally accessible flange, a coplanar or ledged identification section with evenly spaced apertures that may encode a binary sequence, and an oblong bottom opening for tube routing.

The invention discloses a wafer optical identification device. Comprising a camera device for shooting graphic and text information on a wafer semiconductor, a light-emitting device with a plurality of light-emitting elements, a circuit substrate capable of identifying the graphic and text information and controlling the light-emitting elements to act, and a light source refraction piece capable of refracting light sources emitted by the light-emitting elements, when the image-text information on the wafer semiconductor cannot be clearly shot by the camera device due to the angle relation, the light source emitted by the light-emitting element on the light-emitting device is utilized to strengthen or optimize the light source where the image-text information is located after passing through the light source refracting piece, and a user can pass through the circuit substrate to obtain the image-text information. And the starting mode of the light-emitting element is changed according to the requirement, so that any light source problem related to graphic and text information can be solved.

The invention discloses lens dispensing, aligning and laminating equipment, and belongs to the technical field of lens laminating equipment. Comprising a machine table, a dispensing and laminating module is arranged on the machine table, the dispensing and laminating module comprises a material tower unit, and the material table unit comprises a prism material tower and a lens material tower which are arranged in parallel; the prism material tower is sequentially provided with a prism carrying table module and a prism visual material taking unit in the advancing direction. The lens material tower is sequentially provided with a lens carrying table module and a lens visual material taking unit in the advancing direction. A fine positioning unit is arranged between the prism visual material taking unit and the lens visual material taking unit; a fitting carrier assembly is arranged below the fine positioning unit, an optical recognition alignment assembly is arranged behind the fine positioning unit, and a discharging curing unit is arranged on the side of the fine positioning unit. The lens dispensing, aligning and laminating equipment disclosed by the invention can be suitable for aligning and laminating a concave lens or a convex lens to a prism, and automatic production is realized in the whole laminating process.

The utility model relates to an automatic optical screw sorting machine, and belongs to the technical field of automatic equipment manufacturing and optical detection. The equipment comprises a feeding module, a vibration disc, a rotating disc module, a camera module and a discharging module. The feeding module receives screws through a feeding hopper, the vibration disc pushes the screws forwards through vibration, the rotating disc module drives a rotating outer disc to rotate through a servo motor, and the screws are located on the same circumference through a guide mechanism. The camera module is arranged on one side of the rotating disc module and used for recognizing the size and the length of the screw and transmitting recognition information to a computer terminal. The discharging module comprises an electromagnetic valve and a push rod, and the electromagnetic valve drives the push rod to feed the screws into the corresponding discharging openings according to feedback signals of the computer terminal. According to the equipment, through the optical recognition technology and an automatic sorting system, the screw sorting efficiency and accuracy are improved, and the requirements for sorting screws of different types and specifications are met.

The invention relates to a method for controlling the driving operation of a vehicle. According to the invention, a monitoring area in front of the vehicle is detected to acquire a relevant target (5, 6) from sensor data, and the environment of the vehicle is detected to generate an environment image (7). According to the sensor data and the environment image (7), relevant objects (5, 6) are optically identified and classified into known relevant objects (5) and unknown relevant objects (6). A travelable level (9) is assigned to a known target (5). The unknown target (6) is further processed by inputting a picture of the unknown target into a calculation unit (9), which is configured with the degree of travel (9) of the target. An unknown target of interest (6) is identified by a computing unit (9) and a travelable level (9) is assigned to the unknown target of interest. The drivable level (9) for the unknown target (6) is provided to a control unit, and the driving operation of the vehicle is controlled by the control unit taking into account the drivable levels (9) of all the targets (5, 6).

The invention discloses a current transformer appearance detection device and method, and belongs to the technical field of optical detection.The device comprises a detection table, an image acquisition module, a pushing assembly and a switching mechanism, the surface of the detection table is sleeved with the pushing assembly, and an extension bracket is welded to one side of the detection table; a switching mechanism is inserted into the middle of the extending bracket in a penetrating mode, an inserting sleeve is inserted into the surface of the switching mechanism in a penetrating mode, a fluted disc is integrally formed at the top of the inserting sleeve, and a material supporting assembly is inserted into the top of the fluted disc. According to the invention, two processes of rotation and overturning can be rapidly realized, so that the angle range of optical identification can be changed in a short time, two surfaces of the current transformer and the inner wall area of the central through hole can be efficiently detected and identified by means of a single image acquisition module, the detection efficiency is improved, the identification dead angle area is eliminated, and the detection accuracy is improved. And moreover, the equipment cost is reduced, the workpieces can be quickly discharged, and the protection effect on the workpieces is also improved.

This invention provides an optical recognition and detection device and method. The optical recognition and detection device includes: a conveying track, a stage, a first magnet assembly, a first magnetic guide, a second magnet assembly, and a second magnetic guide. The stage is rotatably mounted on the conveying track. The first N-pole and first S-pole of the first magnet assembly are positioned at a first height on the stage, 180 degrees apart from each other. The first magnetic guide is located at the first height and has a consistent magnetic pole on its surface facing the conveying track. The second N-pole and second S-pole of the second magnet assembly are positioned at a second height on the stage, different from the first height, 180 degrees apart from each other. The second N-pole and second S-pole are 90 degrees apart from the first N-pole and first S-pole, respectively. The second magnetic guide is located at the second height and has a consistent magnetic pole. The optical recognition and detection device and method of this invention improve upon the problem of easy errors in the interpretation of existing technologies and add the function of interpreting coating film thickness.

The present invention relates to a sample preparation system comprising a surface selection module for identifying one or more preparation discs having a preparation surface for materialographic sample preparation, the surface selection module comprises a support system having three or more shelves, such as five or more shelves each arranged to support a preparation disc having a preparation surface, for each shelf, the surface selection module comprises a reflecting surface arranged to direct electromagnetic waves reflected from a characteristic identification mark of the preparation disc to a sensing position located external to the support system, the surface selection module further comprisesan optical sensor arranged to sense the characteristic identification mark in the sensing position and to provide an identification output accordingly,the sample preparation system further comprisesa mechanical processing unit comprising a support arrangement with a plane support surface on which the preparation discs may be held in place during sample preparation by means of a fixation arrangement,a transfer unit for transferring a preparation disc having a preparation surface from the support system to the plane support surface of the mechanical processing unit, anda control unit arranged to control the transfer unit in response to the identification output, the invention further relates to a preparation disc and a method of identifying one or more preparation discs.