Foreign body detection device

Abstract

The invention discloses a foreign body detection device and relates to the field of cash transaction. A throwing-in mechanism is used for placement of thrown paper money; an ion fan is used for exerting force on the paper money inside the throwing-in mechanism by pushing a baffle; a detection assembly is connected with the throwing-in mechanism and used for obtaining the weight and the thickness of the paper money inside the throwing-in mechanism; a control part is connected with the throwing-in mechanism, the detection assembly and the ion fan and used for controlling the throwing-in mechanism, the detection assembly and the ion fan, and the control part judges whether a foreign body exists or not according to the difference between the thickness detected by the detection assembly and a pre-determined reference signal. The ion fan pushes the baffle, so that it is avoided that the baffle generates static electricity in the movement process of the throwing-in mechanism and measurement of the thickness of the paper money is affected; as the detection assembly obtains the thickness and weight of the paper money, the accuracy of measurement on foreign bodies is improved, especially the accuracy of measurement on metal foreign bodies is improved, an obvious difference is generated by comparing the weight of the paper money with the reference signal, and the accuracy of measurement is improved.

Description

technical field [0001] The invention relates to the field of cash transactions, in particular to a foreign object detection device. Background technique [0002] In a device that handles banknotes through the user's deposit operation, such as a banknote deposit and withdrawal processing device or a dedicated deposit machine, if foreign objects such as coins or pins are mistakenly mixed into the deposit opening where deposit banknotes are inserted, the mixed foreign objects will be removed together with the banknotes. Entering into the device is prone to the situation that banknotes get stuck or machine malfunctions. [0003] Chinese patent (CN101123015A) discloses a foreign object detection device, such as figure 1 Shown is a schematic diagram of the foreign object detection device as a part of the banknote input and withdrawal mechanism in the cash transaction device. The banknote input and output mechanism is composed of a banknote delivery unit composed of a pick-up roll...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that in the banknote processing units of automatic cash transaction devices, banknote processing devices and other devices, metal and other foreign objects cannot be detected when there are metals and other foreign objects in the input banknotes, resulting in machine failure, thereby providing a foreign object detection method. The technical solution of the device

Images