electronic article surveillance

8/6/2019 Electronic Article Surveillance

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Electronic Article

Surveillance

Digital EAS


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Chapter I. Basic Working Principle

EAS sensor consists of two parts, TX(Transmitter) and RX (Receiver).

The basic working principle of EAS system:transmitter radiates the sweep frequency signalsto the space, there will be a detecting-areabetween TX and RX when a receiver is fixednear to the transmitter, then the sensor system

can search the active label within the specialelectromagnetic field based on the principle ofelectromagnetic wave resonance. It will be alertif any active labels exist in the detecting-area.


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SYSTEM FLOW CHART

Commodity

Take it

away

Payment

Deactivate

Unpaid

Commodity

with active

label/tag

Stick labels or tags

to the commodity

Leave (pass the sensors) SYSTEMS

ALARMS


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1.2.1 Character of EAS system

EAS system can not only prevent the commodity from

being stolen, but also can meliorate relationship

between shoppers and stores. The ultimate character

of EAS system is endowing the commodity with theability of self-defense, the other characters of EAS are

as following:

1. High accuracy judging theft.

2. High protecting efficiency. Less people to supervise,

and better protecting effect.3. High-tech protection for commodity instead of people

supervising, so shoppers can be respected, and

pleasant shopping atmosphere is created.


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1.2.2 Economic value brought by

EAS1. Decrease the loss caused by theft so

that increase profit directly for stores.

2. Decreased the labour cost of shopassistant, so reduce business cost.

3. Increase sale, since shoppers are in thepleasant shopping atmosphere without

suspicion.4. Increase sale, since all commodity can

be sold in open-shelf way


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1.3The components of EAS

System Electronic Article Surveillance System

consists of sensor system (TX, RX and

special power supply for sensors),Electronic labels (soft label and hard tag)

and deactivating instruments (Deactivator

and Detacher).


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1.3.1 Sensor

The sensors, usually installed in the

passage or doorway of the store,

comprise one TX, one Rx, and one

power supply. There will be a

detecting-area (electromagnetic area)

between the TX and RX, which could

detect the commodity passing through

the sensors; and the system will alarm

when the unpaid commodity (with

active tags/labels) pass through the

detecting-area.


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1.3.2 Electronic Labels

In order to meet the needs of different commodity anddifferent detecting width, we produce several kinds ofelectronic labels; we also can make customer-madelabels according to customers needs. The following

are different kinds of labels:1. RF soft label: Used for only one time and can be stuck on the

surface of all nonmetallic commodity.

2. Hard tag: Used in repetition and can be attached to clothesbags and shoes.

3. CDCassette safer: Used in repetition, and suits for protecting

CD, VCD, DVD and tape, etc.4. Bottle safer/Milk powder safer: Used in repetition, suit for

protecting all kinds of wine and milk powder.

5. Cigarette Safer: Used in repetition, designed for cigarettespecially


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SOFT LABELS


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HARD TAGS


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1.3.3 Deactivating Instrument

(Deactivator/Detacher) Deactivator

Generate a deactivating-area

measuring 15cm high over

the deactivating pad, which

can invalidate the active8.2MHzRF label when

commodity attached with

labels pass through the

deactivating-area over the

pad, thus fulfill non-contact

deactivating.


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Detacher

It can detach the hard

tags from commodity

quickly, safely and

conveniently.

1.3.3 Deactivating Instrument

(Deactivator/Detacher)


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2.1.1 Diagram of EAS system.

electronic article surveillance

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