CN205680223U - Eas system - Google Patents
Eas system Download PDFInfo
- Publication number
- CN205680223U CN205680223U CN201620560227.6U CN201620560227U CN205680223U CN 205680223 U CN205680223 U CN 205680223U CN 201620560227 U CN201620560227 U CN 201620560227U CN 205680223 U CN205680223 U CN 205680223U
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- China
- Prior art keywords
- processing unit
- signal processing
- digital signal
- eas system
- reception antenna
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- Burglar Alarm Systems (AREA)
Abstract
The utility model provides a kind of eas system, including electronic tag, reception antenna, power amplifier, wave filter, digital signal processing unit, display device, warning device and message input device, described reception antenna, described power amplifier, described wave filter and described digital signal processing unit are sequentially connected electrically, and described display device, described warning device and described message input device electrically connect with described digital signal processing unit respectively.Compared with correlation technique, eas system that the utility model provides has that easy to operate, intuitive display, use be simple, feature richness, circuit stability, debugging easily, produce efficiently, compatibility is good and updates the upgrading technique effect such as easily.
Description
Technical field
The utility model belongs to electronic article surveillance technical field, particularly relates to a kind of eas system.
Background technology
Eas system (Electronic Article Surveillance, EAS) Phylogeny is in 20th century
The U.S. of the sixties, owing to the retail business of U.S. at that time exists serious stolen phenomenon, therefore arises.It is typically by detecting
Device, decoder, power supply and electronic tag are constituted.Up to now, vast businessman generally believe employing EAS system be reduce stolen,
Reduce the most economical reliable management means of loss.
At present, based on eas system major part on the market remains with analog signal processing technology, monolithic
It is auxiliary that machine coordinates, and this eas system has that circuit is complicated, components and parts are many, fault rate is high, poor stability, maintenance are stranded
Difficult, parameter is many, debugging trouble and the defect such as automaticity is low, and is that to carry out Fuzzy Representation signal with LED flashing mode strong
The mode of degree, user cannot see concrete relevant parameter intuitively and accurately, use the side of one or more potentiometer during debugging
Method carrys out Fuzzy tuning, even if using the complex instrument such as oscillograph also cannot debug accurately unified for parameter, in production process also
There is the situation that parameter spread is uneven because the difference and causing of commissioning staff is dispatched from the factory.This with the electronics based on analog circuit
Burglary protection system for commodities, as analog circuit updates test period length and causes model change, function upgrading excessively slow.
Therefore, it is necessary to provide a kind of new eas system to solve the problems referred to above in fact.
Utility model content
The utility model need to solve the technical problem that and be to provide a kind of eas system, its easy to operate, display
Intuitively, use simple, feature richness, circuit stability, debugging easily, produce efficiently, compatibility is good and updates upgrading easily.
In order to solve above-mentioned technical problem, the utility model provides a kind of eas system, including electronics mark
Label, reception antenna, power amplifier, wave filter, digital signal processing unit, display device, warning device and information input
Device, described reception antenna, described power amplifier, described wave filter and described digital signal processing unit are electrically connected successively
Connecing, described display device, described warning device and described message input device are electric with described digital signal processing unit respectively
Connect.
Preferably, described digital signal processing unit includes A/D converter and DSP Processor, described A/D converter and institute
Stating wave filter electrical connection, described DSP Processor electrically connects with described A/D converter.
Preferably, described eas system also includes infrared signal receiving circuit and to described IR signal reception
Circuit sends the IR remote controller of infrared signal, and described infrared signal receiving circuit is electrically connected with described digital signal processing unit
Connect.
Preferably, described eas system also includes the passenger flow counting device detecting the volume of the flow of passengers, described passenger flow meter
Counting apparatus electrically connects with described digital signal processing unit.
Preferably, described warning device includes indicator lamp and buzzer.
Compared with correlation technique, the eas system that the utility model provides will by digital signal processing unit
Analog signal is converted into data signal, is shown various information digitalizations by display device, and is come by message input device
Select different functions and parameter, so that this eas system has easy to operate, intuitive display, use letter
List, feature richness, circuit stability, debugging easily, produce efficiently, compatibility is good and updates the upgrading technique effect such as easily.
Brief description
Fig. 1 is the structured flowchart of the utility model eas system.
Detailed description of the invention
Technical scheme in the utility model embodiment will be clearly and completely described below, it is clear that described
Embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the enforcement in the utility model
Example, all other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, broadly fall into
The scope of the utility model protection.
Refer to Fig. 1, be the structured flowchart of the utility model eas system.Described eas system
1, including electronic tag the 10th, reception antenna the 11st, power amplifier the 12nd, wave filter the 13rd, digital signal processing unit the 14th, display device
15th, warning device the 16th, message input device the 17th, passenger flow counting device the 18th, infrared signal receiving circuit 19 and IR remote controller
20.Described reception antenna the 11st, described power amplifier the 12nd, described wave filter 13 and described digital signal processing unit 14 are successively
Electrical connection, described display device the 15th, described warning device the 16th, described message input device the 17th, described passenger flow counting device 18 with
And described infrared signal receiving circuit 19 electrically connects with described digital signal processing unit 14 respectively.
Described electronic tag 10 is arranged on commodity, and described reception antenna 11 is arranged at formation monitoring section at gateway
Territory, when passing through from described monitored area with the commodity not deactivating described electronic tag 10, described eas system 1
Described electronic tag 10 can be detected by described reception antenna 11 and produce alarm signal.
Described reception antenna 11 can arrange one or more according to the size and number of gateway in actual applications.Often
Individual described reception antenna 11 forms a monitored area, and each described reception antenna 11 operationally, first launches electromagnetic wave, then
Receiving, the signal of reception enters described digital signal processing unit 14 and processes.The harmonic high frequency that described reception antenna 11 receives
The frequency of signal of shaking can be between 3MHz-20MHz, certainly, concrete can be according to the described electronic tag 10 using depending on.
Described power amplifier 12 is for amplifying the signal that described reception antenna 11 receives, and described wave filter 13 is used for filtering
The noise signal in signal after described power amplifier 12 amplifies.
Described digital signal processing unit 14 is for receiving the analog signal of described wave filter 13 output and believing this simulation
It number is converted into data signal, and judge whether this data signal is the resonance signal that described electronic tag 10 sends.Described numeral
Signal processing unit 14 specifically includes A/D converter 140 and DSP Processor 141, described A/D converter 140 and described wave filter
13 electrical connections, described DSP Processor 141 electrically connects with described A/D converter 140.140 the described filtering of described A/D converter
The analog signal of device 13 output is converted into data signal, and described DSP Processor 141 receives the number that described A/D converter 140 sends
Word signal simultaneously carries out ASK demodulation filtering process to data signal, it may be judged whether there is the resonance that described electronic tag 10 sends
Signal.When determination has the resonance signal that described electronic tag 10 sends, described digital signal processing unit 14 controls described report
Alarm device 16 sends alarm.
Described digital signal processing unit 14 preferentially uses high speed MCU chip, the serial dsp chip of such as TMS320, this
Kind of chip uses enhanced Harvard bus structures, and program uses six level production lines controls, makes the major part data can be an instruction
Complete in cycle, thus substantially increase data processing speed.So, except signals collecting and power supply are powered, other core work(
Can be programmed to by MCU is carried out to described digital signal processing unit 14, not only simplify circuit, decrease unit
The quantity of device, but also effectively reduce because of component parameter drift or damage the fault rate causing.
DSP is the abbreviation of digital signal processor, is a kind of to process bulk information with digital technology
Microprocessor.Its operation principle is to receive analog signal, is converted to the data signal of 0 or 1, then data signal is modified,
Delete or strengthening.It is not only programmable, and when in fact, the speed of service is up to tens million of complicated order journeys per second
Sequence, considerably beyond general purpose microprocessor.
Described display device 15 electrically connects with described digital signal processing unit 14, is used for digital displaying signal intensity, spirit
Sensitivity, scan frequency, mode of operation and state, work timing time and the date of production etc..Described display device 15 can make
With charactron or liquid crystal display, can clearly illustrate signal quantize after numeral, simple and clear, also can show related simultaneously
Systematic parameter.
Described warning device 16 includes indicator lamp and buzzer.Described warning device 16 receives described alarm signal and passes through
Described indicator lamp and described buzzer produce sound and light signal to warn.
Described message input device 17 includes button input mode, touch input mode, phonetic entry mode and text
Input mode etc., but the utility model is not limited to the above-mentioned various input modes enumerated, other any reasonables
Input mode ought to broadly fall among the input mode of the described message input device 17 that the utility model is recorded.
Described passenger flow counting device 18 for the volume of the flow of passengers by described monitored area for the detection, described passenger flow counting device with
Described digital signal processing unit electrically connects.
Described IR remote controller 20 sends infrared signal, described IR signal reception to described infrared signal receiving circuit 19
Circuit 19 electrically connects with described digital signal processing unit 14.Adjust described electronic goods by described IR remote controller 20 to prevent
The parameters such as the gain of theft system 1, sensitivity.It is of course also possible to data after realizing processing described digital signal processing unit 14
Transmission be controlled.
Compared with correlation technique, the eas system 1 that the utility model provides passes through digital signal processing unit
Analog signal is converted into data signal by 14, and is shown various information digitalizations by display device 15, so that this electricity
Sub-burglary protection system for commodities 1 has that easy to operate, intuitive display, use be simple, feature richness, circuit stability, debugging easily, produce
The technique effects such as efficiently, compatible good and renewal upgrading is easy.
Above-described is only embodiment of the present utility model, it should be noted here that for the ordinary skill of this area
For personnel, on the premise of creating design without departing from the utility model, improvement can also be made, but these belong to this practicality
Novel protection domain.
Claims (5)
1. an eas system, it is characterised in that include electronic tag, reception antenna, power amplifier, filtering
Device, digital signal processing unit, display device, warning device and message input device, described reception antenna, described power are put
Big device, described wave filter and described digital signal processing unit are sequentially connected electrically, described display device, described warning device with
And described message input device electrically connects with described digital signal processing unit respectively.
2. eas system according to claim 1, it is characterised in that described digital signal processing unit includes
A/D converter and DSP Processor, described A/D converter electrically connects with described wave filter, and described DSP Processor turns with described A/D
Parallel operation electrically connects.
3. eas system according to claim 1, it is characterised in that described eas system also wraps
Include infrared signal receiving circuit and send the IR remote controller of infrared signal, described infrared letter to described infrared signal receiving circuit
Number receive circuit electrically connect with described digital signal processing unit.
4. eas system according to claim 1, it is characterised in that described eas system also wraps
Including the passenger flow counting device of the detection volume of the flow of passengers, described passenger flow counting device electrically connects with described digital signal processing unit.
5. eas system according to claim 1, it is characterised in that described warning device include indicator lamp and
Buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620560227.6U CN205680223U (en) | 2016-06-12 | 2016-06-12 | Eas system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620560227.6U CN205680223U (en) | 2016-06-12 | 2016-06-12 | Eas system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205680223U true CN205680223U (en) | 2016-11-09 |
Family
ID=57435100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620560227.6U Expired - Fee Related CN205680223U (en) | 2016-06-12 | 2016-06-12 | Eas system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205680223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833425A (en) * | 2017-10-24 | 2018-03-23 | 深圳中安安防科技有限公司 | Remote anti-theft device control system and method |
-
2016
- 2016-06-12 CN CN201620560227.6U patent/CN205680223U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833425A (en) * | 2017-10-24 | 2018-03-23 | 深圳中安安防科技有限公司 | Remote anti-theft device control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20200612 |