Detection device of metal foreign body of postage meter
A metal foreign object and detection device technology, applied in the postage meter field, can solve the problems that the postage meter cannot be avoided by the metal foreign object, and the metal foreign object of the envelope cannot be detected in real time, so as to suppress noise interference, eliminate false positives and false positives, and facilitate system integration Effect
Active Publication Date: 2012-06-27
ZHEJIANG UNIV OF TECH
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[0007] In order to overcome the shortcomings of existing postage machines that cannot detect metal foreign objects in envelopes in real time and cannot avoid damage to postage machines caused by metal foreign objects, the present invention provides a method that can detect metal foreign objects in envelopes in real time and effectively avoid damage to postage due to metal foreign objects. Metal foreign object detection device for the postage machine in the case of the machine
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[0017] The present invention will be further described below in conjunction with the accompanying drawings.
[0018] refer to Figure 1 ~ Figure 3 , a postage machine metal foreign matter detection device, comprising a frame, a print head 1 is fixedly installed on the frame, and a metal detector 2 for detecting metal is installed on the frame, viewed from the direction of movement of the envelope 3, the The metal detector 2 is located at the back of the printing head 1, and the metal detector 2 is connected to a microprocessor for sending an emergency stop signal to the postage meter if there is a metal foreign object according to the signal of the metal detector.
[0019] The metal detector 2 is connected to an A / D converter, and the A / D converter is connected to the microprocessor, and the microprocessor includes: a filtering module for median filtering the voltage signal of the metal detector ;A correction module for performing error correction on the signal after median f...
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The invention provides a detection device of a metal foreign body of a postage meter. The device comprises a frame, wherein a printing head is fixed on the frame; the frame is provided with a metal detector for detecting metals; by checking from the moving direction of an envelope, the metal detector is positioned behind the printing head, and is connected with a microprocessor which is used for sending out an emergency stop signal to the postage meter when a metal foreign body is found in the envelope according to signals of the metal detector. The invention provides a detection device of a postage meter capable of realizing detection on the metal foreign body in the envelope and effectively preventing the metal foreign body from damaging the postage meter.
Description
technical field [0001] The invention relates to a postage meter. Background technique [0002] A postage meter is a mail processing device that can print postage marks on mail or labels, and can preset, settle and adjust postage, and can provide relevant business data at the same time. [0003] The postage meter consists of two parts, the data management module and the stamp output part. The mechanical postage meter applies a postage symbol to the envelope by means of a mechanical backstamp. Digital postage meters usually print out postage symbols on envelopes by means of inkjet, thermal transfer, etc. [0004] The stamp output part of the postage meter is a consumable part. Under normal use conditions, the life of the mechanical stamp is more than 20 million seals, and the life of the inkjet print head of the digital postage machine can also reach more than 10 million seals. However, the common problem is that some envelopes contain metal coins, hard cards, or are seale...
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IPC IPC(8): G01V3/00B41J29/38
Inventor 张立彬占红武胥芳史伟民
Owner ZHEJIANG UNIV OF TECH