Testing device for thickness of slice medium

Abstract

A thickness measurement device, in particular a sheet medium thickness detection device, comprising: a fixing frame (17); a reference shaft (11) having the two ends installed on the fixing frame (17) via bearings (21), the reference shaft (11) being fixedly sleeved with a reference roller (12) thereon; a detection shaft (13) having the two ends fixedly installed on the fixing frame (17), the detection shaft (13) being provided with at least one detection roller base (14) thereon having one end freely rotating around the detection shaft (13), the free end of the detection roller base (14) being provided with a freely rotating detection roller (16), the detection roller (16) and the reference roller (12) being disposed to form a resilient contact; a resilient pressing sheet (15) disposed corresponding to the detection roller base (14), one end of the resilient pressing sheet (15) being fixed on the fixing frame (17), and the other end forming a free end and applying a pressing force to the detection roller base (14) in the reference roller (12) direction; a magnet (18) fixedly disposed on the side where the free end of the resilient pressing sheet (15) faces away from the detection roller (16); and a Hall sensor (19) disposed opposite to the magnet (18) and fixed on the fixing frame (17) for detecting the displacement of the magnet (18) in a non-contacting manner.

Description

technical field [0001] The invention relates to a device for measuring thickness, in particular to a detection device for detecting the thickness of thin sheets of valuable documents in financial self-service equipment. Background technique [0002] In the financial self-service equipment, in order to inspect each sheet of valuable documents (such as banknotes) processed in batches one by one, it is necessary to separate the stacked sheet of valuable documents one by one, and then separate the separated single sheet of valuable documents Valuable documents are identified by image recognition, thickness detection, magnetic information detection and other identification methods to ensure the authenticity of the processed thin sheet valuable documents, among which thickness detection is essential in the entire detection, and the thickness detection information can be used To judge the authenticity of the processed thin sheet valuable documents, it can also judge whether the mec...

AI Technical Summary

Problems solved by technology

[0005] Apparently, because the detection roller base 4 is displaced and oscillated in the axial direction of the detection shaft 2, the thickness detection device cannot correctly reflect the thickness value of the sheet value document passing through, which leads to the inaccuracy of the detection device, so , it is necessary to seek a solution to the above technical defects

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