Coin detection system and method

Abstract

The invention relates to a coin detection system and a method. The system comprises an eddy current sensor control unit, a signal conditioning unit, a sampling unit and a main controller. An eddy current sensor is mounted on a coil conveying channel, a work mode of the eddy current sensor is controlled through the eddy current sensor control unit, signals outputted by the eddy current sensor are adjusted through the signal conditioning unit to a proper scope and then are sampled through the sampling unit, the sampled data is transmitted to an external CPU controller for analysis, so stable analysis and detection on materials of coins can be carried out. According to the system, the eddy current sensor is controlled through the eddy current sensor control unit to work at a proper frequency point, manual operation is not needed, and great convenience for users is realized. Error compensation is carried out under the control of a main control unit, and automatic correction is further realized.

Description

technical field [0001] The invention relates to coin processing equipment, which is used in coin processing machines, in particular to a coin detection system and method. Background technique [0002] At present, the coin detection equipment used by my country's banks and related financial institutions, bus companies, shopping malls and other occasions includes coin changers and coin sorting machines. [0003] Detecting the material characteristics of coins is a common method to identify the authenticity of coins and identify the face value. The principle of eddy current is often used to detect the material of coins. This method usually requires the eddy current sensor to work at a certain frequency point. Detection signal analysis to identify coin authenticity and face value. In the entire detection device, if there is an error in the mechanical assembly or in the electronic device, it will cause an error in the detection signal output by the eddy current sensor, thereby ...

AI Technical Summary

Problems solved by technology

In the entire detection device, if there is an error in the mechanical assembly or the error in the electronic device, it will cause an error in the detection signal output by the eddy current sensor, thereby reducing the authenticity and face value recognition rate of the coin

This requires an error compensation means in the detection device, which is generally corrected by manual calibration in the equipment. If this calibration operation is carried out frequently, it will bring great inconvenience to the producer and the user, and it is usually calibrated at a certain interval. One time test, can not be corrected at any time

Images