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4.4 DETECTION OF THE PRESENCE OF COINS
At the previous sensorisation stage, and depending on whether the model manages one or two
coin types, the necessary measurements of the parameters and characteristics of the coins that
are being transported the track are done. The parameters obtained by means of the magnetic
and optic sensor are contrasted with the data base in the hopper to identify the value when
working with two types of coins. In this way the hopper knows what type of coin occupies each
position on the track and may determine the posterior action related with the finalisation of the
payment, with respect to the payout value requested.
For hoppers with one type of coin, this stage of sensorisation has the function of additional
detection to give of greater security in the transactions.
With the detection of the presence of coins and with support of the exit detection, high security
with respect to exterior manipulation and possible electronic fraud is achieved.
4.5 DETECTION OF LEVELS
The full level of the hopper is measured by means of the sensors optics situated in the hopper.
There are two levels detected: minimum and maximum.
These two levels may be adjusted manually, by placing the full and empty sensors in the
different holes available in the hopper.
The approximate amount of coins for each position may be consulted in the section
3.4.3
Detection of coin levels
.
The information of coin levels is very useful to optimise the working of the unit, for example, the
situation “Out of Order” due to an empty hopper.
On detection of full hopper, the master may redirect the coins towards other locations, such as
other hoppers or the cashbox; or in its case, inform of an imminent overflow situation which
requires service personnel to attend.
4.6 SECURITY AND CONTROL DEVICES
By means of the information obtained by the sensors and detectors mentioned previously, we
have developed different software devices of with objective of ensuring the transactions,
optimising functions, preventing the appearance of errors and protecting the system from
exterior manipulations. These devices are detailed below.
Anti-jamming Function
The timely detection of an increase in current draw in the motor is an efficient measure to
Summary of Contents for t3 hopper
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