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713results about "Coin testing" patented technology

Coin discrimination apparatus and method

A coin discrimination apparatus and method is provided. Coins, preferably after cleaning, e.g. using a trommel, are singulated by a coin pickup assembly configured to reduce jamming. A coin rail assists in providing separation between coins as they travel past a sensor. The sensor provides an oscillating electromagnetic field generated on a single sensing core. The oscillating electromagnetic field is composed of one or more frequency components. The electromagnetic field interacts with a coin, and these interactions are monitored and used to classify the coin according to its physical properties. All frequency components of the magnetic field are phase-locked to a common reference frequency. The phase relationships between the various frequencies are fixed, and the interaction of each frequency component with the coin can be accurately determined without the need for complicated electrical filters. In one embodiment, a sensor having a core, preferably ferrite, which is curved, such as in a U-shape or in the shape of a section of a torus, and defining a gap, is provided with a wire winding for excitation and / or detection. The sensor can be used for simultaneously obtaining data relating to two or more parameters of a coin or other object, such as size and conductivity of the object. Two or more frequencies can be used to sense core and / or cladding properties. Objects recognized as acceptable coins, using the sensor data, are diverted by a controllable deflecting door, to tubes for delivery to acceptable coin bins.
Owner:COINSTAR LLC

Method and device for distinguishing false money by imaging paper money through multimodal information fusion

The invention provides a method and a device for distinguishing false money by imaging paper money through multimodal information fusion, which overcome the limitation of the conventional method and achieve high reliability. The device for distinguishing the false money by imaging the paper money through the multimodal information fusion consists of a sensor, a signal processing unit, a master control unit, a driving unit and a transmission passage, wherein the master control unit is connected with the position sensor, the signal processing unit and the driving unit respectively; and the driving unit is connected with the transmission passage. The method comprises the following steps of: acquiring the multimodal characteristics of the paper money; fitting the process that a person senses the false distinguishing characteristics of the paper money by a plurality of characteristic extracting methods, and constructing a multimodal characteristic space; and using a targeted matching and comparing algorithm for different anti-counterfeiting characteristics. By using the method and the device, paper money stained damage and anti-counterfeiting characteristic abnormality are distinguished according to a model, and by a multi-classifier fusion method, the limitation of the conventional method is effectively overcome, and the false paper money distinguishing with high reliability is realized.
Owner:HARBIN INST OF TECH

System and method for detecting front and back face qualities of imprinted Renminbi (RMB) large-page product

ActiveCN102136165AFactory quality and safetyReduce detection capacity dropCoin testingMaterial analysis by optical meansEngineeringQuality safety
The invention relates to a system and method for detecting front and back face qualities of an imprinted Renminbi (RMB) large-page product. The method comprises the following steps of: arranging a front face detecting unit and a back face detecting unit on a paper collecting part of an imprinter respectively; and transmitting a pulse signal by using an encoder which is synchronous to a system detection drum to trigger a colored linear array CCD (Charge Coupled Device) camera to acquire an image, wherein the reduction in the detection capability of the system, caused by paper fluctuation, can be reduced to the maximum extent by using a flattening device. By adopting the system and method, products with severe quality problems caused by an imprinting procedure per se and a series of products with continuous remarkable quality problems (such as paper holes, break angles, oil stains, number strike-through and the like) can be intercepted, and products with remarkable and severe quality problems in an offset printing procedure and a gravure procedure can be controlled according to a detection result, better technical supplements are provided for the conventional running computer retrieval process, and the front and back face qualities of the important imprinted RMB product can be checked, scraps can be positioned accurately, and the delivery quality safety of the product is ensured.
Owner:XIAN BANKNOTE PRINTING +1

Automatic coin quality detection device

The invention relates to an automatic coin quality detection device, in particular to a high-precision multifunctional automatic coin production quality detection device based on a visual system, realized by applying an image processing technology. The detection device comprises a combined illumination imaging light source, an image receiving unit, an image processing unit, a result output unit and a damaged coin discarding device, wherein the image receiving unit, the image processing unit, the result output unit and the damaged coin discarding device are sequentially connected; the combined illumination imaging light source adopts a mode that surface light sources at a high angle and a low angle illuminate at the same time; the image receiving unit collects image data on the coin surface; the image processing unit process the collected image data, confirms and discards defective products according to a production standard and transfers real-time detected images and analysis result information to the result output unit; and the damaged coin discarding device discards the ultra-detective products according to the control information of the image processing unit. The invention has the objective detection standard, can quantitatively prescribe, improves the production efficiency, can continuously upgrade the detection speed, emancipates the labor force and improves the automation degree of coinage.
Owner:CHINA BANKNOTE PRINTING & MINTING
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