A means and method for checking a value document of at least one irregularity of at least one specified type, in which an ultrasound data record is captured which describes in locally resolved fashion at least one ultrasound property, a deviation data record is ascertained which describes in locally resolved fashion a deviation between the ultrasound data record and a model and is ascertained such that the deviation described thereby is minimal with respect to the model. The model comprises a model for the location dependence of the at least one ultrasound property of reference value documents of the specified value document type without irregularities of the at least one specified type, and using the deviation data record, it is checked whether an indication of an irregularity of the at least one type is present on the value document.

A means and method for checking a value document of at least one irregularity of at least one specified type, in which an ultrasound data record is captured which describes in locally resolved fashion at least one ultrasound property, a deviation data record is ascertained which describes in locally resolved fashion a deviation between the ultrasound data record and a model and is ascertained such that the deviation described thereby is minimal with respect to the model. The model comprises a model for the location dependence of the at least one ultrasound property of reference value documents of the specified value document type without irregularities of the at least one specified type, and using the deviation data record, it is checked whether an indication of an irregularity of the at least one type is present on the value document.

An overlapping bill detection method and apparatus are provided. The method includes: collecting front images and back images of banknotes to be recognized, and transmission images, acquiring front banknote information and back banknote information of the banknotes to be recognized based on the front images and the back images, initializing a local feature attribute window, where the local feature attribute window is a template of a predetermined recognition region containing a feature attribute of an image to be recognized, measuring a coupling degree of the transmission images of the front images and the back images according to the local feature attribute window to obtain a measurement result, determining whether the measurement result meets a preset banknote overlapping condition, if so, determining that the banknotes to be recognized are overlapped, and otherwise, determining that the banknotes to be recognized are not overlapped

A banknote sorting apparatus and a control method therefor are provided. The control method for the banknote sorting apparatus includes: obtaining a characteristic value of a standard template, wherein the standard template is a preset banknote template satisfying a set condition, and the characteristic value is a characteristic value for banknote classification; and displaying the characteristic value and an original sorting parameter corresponding to the characteristic value, wherein the original sorting parameter is a sorting parameter preset in the banknote sorting apparatus.

A banknote sorting apparatus and a control method therefor are provided. The control method for the banknote sorting apparatus includes: obtaining a characteristic value of a standard template, wherein the standard template is a preset banknote template satisfying a set condition, and the characteristic value is a characteristic value for banknote classification; and displaying the characteristic value and an original sorting parameter corresponding to the characteristic value, wherein the original sorting parameter is a sorting parameter preset in the banknote sorting apparatus.

A method and a device for automatically diagnosing a sorter fault are provided. The method includes: obtaining a banknote image of a banknote by scanning; performing data processing on the banknote image based on a preset detection algorithm, to obtain a processing result; and sending a feedback information if the processing result satisfies a preset condition.

A method and a device for automatically diagnosing a sorter fault are provided. The method includes: obtaining a banknote image of a banknote by scanning; performing data processing on the banknote image based on a preset detection algorithm, to obtain a processing result; and sending a feedback information if the processing result satisfies a preset condition.

A paper-sheet-thickness detecting sensor of the present invention includes: an oscillator that outputs high-frequency signals with frequencies corresponding to positions in a horizontal direction that is orthogonal to a direction in which a paper sheet is transported; a signal electrode to which the high-frequency signals output by the oscillator are applied; a plurality of detection electrodes that face the signal electrode across a transportation path for the paper sheet and that individually detect detection signals that correspond to the positions; a plurality of resonance circuits that each have one end connected to one end of each of the plurality of detection electrodes and that have resonance frequencies equal to the frequencies allocated to the positions; and a broadband amplifier to which another end of each of the plurality of resonance circuits is connected and that outputs outputs of the plurality of resonance circuits as one piece of sensor output information.

A banknote image processing device of the present disclosure includes a storage unit and a processor, the storage unit stores an image of a normal banknote therein, and the processor performs pseudo-damage processing that imitates damage caused on the normal banknote, on the image.

The present invention relates to an ultrasonic sensor for detecting double sheets and a method of detecting double sheets using the same, in which in configuring the ultrasonic sensor for detecting double sheets of banknotes passing through a transfer path, the ultrasonic sensor is configured to include an ultrasonic wave generator and an ultrasonic wave receiver provided in pair to face each other in a direction perpendicular to a transfer direction of the banknotes with the transfer path for transferring the banknotes interposed therebetween, and periodicity of a reception signal detected by the ultrasonic wave receiver is determined to detect whether a zero sheet, a single sheet or double sheets of the banknotes pass through the transfer path according to generation or not of the periodic signal and/or a frequency of the generation.