CN208207097U - A kind of radio frequency card detection device - Google Patents
A kind of radio frequency card detection device Download PDFInfo
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- CN208207097U CN208207097U CN201820752899.6U CN201820752899U CN208207097U CN 208207097 U CN208207097 U CN 208207097U CN 201820752899 U CN201820752899 U CN 201820752899U CN 208207097 U CN208207097 U CN 208207097U
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Abstract
The utility model provides a kind of radio frequency card detection device, which includes governor circuit, power circuit and PN532 radio circuit, and power circuit provides power supply to governor circuit and PN532 radio circuit, and governor circuit is electrically connected with PN532 radio circuit；PN532 radio circuit includes PN532 radio frequency chip, filter circuit and antenna, and filter circuit is electrically connected with PN532 radio frequency chip and antenna respectively；Filter circuit includes the first idle capacity, second idle capacity, third idle capacity and the 4th idle capacity, the first end of first idle capacity and the first end of third idle capacity are electrically connected the branch connected in first resistor with first capacitor, and the first end of the first end of the second idle capacity and the 4th idle capacity is electrically connected in the branch of second resistance and the second capacitance connection.It can upgrade and safeguard convenient for later period circuit using the radio frequency card detection device of the utility model.
Description
Technical field
The utility model relates to radio frequency detection device technical fields, specifically, being related to a kind of radio frequency card detection device.
Background technique
With the fast development of automatic identification technology, the application of radio RF recognition technology also becomes more and more extensive,
Contact-free integrated circuit (Integrated Circuit, IC) card etc. all plays an important role.
In existing technology, card detection device generallys use Inductive coupling techniques, and antenna generates electromagnetic field to smart card
Power supply and transmission data.The design of antenna circuit will affect the distance of smart card reader, it is therefore desirable to according to need to be to antenna circuit
In inductance and capacitor be configured.And in existing circuit, usually in circuit using fixed electronic device, if circuit needs
When upgrading or component mismatch occur, then needs to redesign circuit, will cause certain wasting of resources in this way.
Summary of the invention
The main purpose of the utility model be to provide it is a kind of convenient for later period circuit upgrade and safeguard radio frequency card detection set
It is standby.
In order to achieve the above-mentioned main objectives, radio frequency card detection device provided by the utility model includes governor circuit, electricity
Source circuit and PN532 radio circuit, power circuit provide power supply to governor circuit and PN532 radio circuit, governor circuit with
The electrical connection of PN532 radio circuit；PN532 radio circuit includes PN532 radio frequency chip, filter circuit and antenna, filter circuit
It is electrically connected respectively with PN532 radio frequency chip and antenna；Antenna includes first end, second end and ground terminal, and filter circuit includes the
One inductance, the second inductance, first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th electricity
Hold, the 8th capacitor, the first idle capacity, the second idle capacity, third idle capacity, the 4th idle capacity, first resistor and the
Two resistance, first end are electrically connected through first resistor, first capacitor and the first inductance with PN532 radio frequency chip, and second end is through
Two resistance, the second capacitor and the second inductance are electrically connected with PN532 radio frequency chip, and the both ends of third capacitor are electrically connected in connecing
The branch that ground terminal and the first inductance are connect with first capacitor, the both ends of the 4th capacitor are electrically connected in ground terminal and second
The branch of inductance and the second capacitance connection, the both ends of the 5th capacitor are electrically connected in ground terminal and first capacitor and the first electricity
The branch of connection is hindered, the both ends of the 7th capacitor are electrically connected the branch connecting in ground terminal and first capacitor with first resistor
Road, the both ends of the 6th capacitor are electrically connected the branch connecting in ground terminal and the second capacitor with second resistance, the 8th capacitor
Both ends be electrically connected the branch connecting in ground terminal and the second capacitor with second resistance, the first end of the first idle capacity
It is electrically connected the branch connected in first resistor with first capacitor with the first end of third idle capacity, the second idle capacity
First end and the first end of the 4th idle capacity are electrically connected in the branch of second resistance and the second capacitance connection.
By above scheme as it can be seen that the first standby electricity is arranged in the radio frequency card detection device of the utility model in filter circuit
Hold, the second idle capacity, third idle capacity and the 4th idle capacity, circuit upgrading can be carried out convenient for the later period and is used, meanwhile, also
It can be in the when progress that matching problem occurs of first capacitor, the second capacitor, the 5th capacitor, the 6th capacitor, the 7th capacitor or the 8th capacitor
It is replaced, it is convenient for safeguarding.
In further embodiment, power circuit includes power input, the first filter circuit, voltage regulator circuit, the second filtering
Circuit and power output end, the first filter circuit are electrically connected with the input terminal of power input and voltage regulator circuit respectively, the second filter
Wave circuit is electrically connected with the output end of voltage regulator circuit and power output end respectively.
It can be seen that power circuit setting voltage regulator circuit can be convenient for by high voltage direct current pressure stabilizing at low-voltage DC to it
He powers at circuit module.Moreover, the first filter circuit and the second filtering is respectively set in the input terminal and output end in voltage regulator circuit
Circuit, the voltage that can be inputted to power input further filter, and improve the stability of power supply power supply.
In further embodiment, radio frequency card detection device further includes indicator light circuit, indicator light circuit and governor circuit
Electrical connection.
It can be seen that setting indicator light circuit, may be used to indicate the working condition of radio frequency card detection device, it is convenient for user
Know whether radio frequency card detection device works normally or working condition.
In further volume scheme, radio frequency card detection device further includes buzzer circuit, buzzer circuit and master control electricity
Road electrical connection.
It can be seen that setting buzzer circuit, can be used for carrying out auditory tone cues, convenient for prompt user's operation.
In further embodiment, radio frequency card detection device further includes usb circuit, usb circuit and master control electricity
Road electrical connection.
It can be seen that setting usb circuit, can carry out information friendship convenient for external device and radio frequency card detection device
Mutually.
Detailed description of the invention
Fig. 1 is the circuit structure block diagram of the utility model radio frequency card detection device embodiment.
Fig. 2 is the circuit diagram of PN532 radio circuit in the utility model radio frequency card detection device embodiment.
Fig. 3 is the circuit diagram of power circuit in the utility model radio frequency card detection device embodiment.
Fig. 4 is the circuit diagram of buzzer circuit in the utility model radio frequency card detection device embodiment.
Fig. 5 is the circuit diagram of usb circuit in the utility model radio frequency card detection device embodiment.
The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.
Specific embodiment
As shown in Figure 1, the radio frequency card detection device of the utility model includes that governor circuit 1, power circuit 2, PN532 are penetrated
Frequency circuit 3, indicator light circuit 4, buzzer circuit 5 and usb circuit 6, power circuit 2 are penetrated to governor circuit 1, PN532
Frequency circuit 3, indicator light circuit 4, buzzer circuit 5 and usb circuit 6 provide power supply, governor circuit 1 respectively with PN532
Radio circuit 3, indicator light circuit 4, buzzer circuit 5 and usb circuit 6 are electrically connected.Wherein, governor circuit 1 is that have
The single-chip microcontroller of data-handling capacity.
Referring to fig. 2, PN532 radio circuit 3 includes PN532 radio frequency chip U1, filter circuit 31 and antenna 32, filtered electrical
Road 31 is electrically connected with PN532 radio frequency chip U1 and antenna 32 respectively.Antenna 32 includes first end 321, second end 322 and ground terminal
323, filter circuit 31 includes the first inductance L1, the second inductance L2, first capacitor C1, the second capacitor C2, third capacitor C3, the 4th
Capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7, the 8th capacitor C8, the first idle capacity C9, the second standby electricity
Hold C10, third idle capacity C11, the 4th idle capacity C12, first resistor R1 and second resistance R2.First end 321 is through first
Resistance R1, first capacitor C1 and the first inductance L1 are electrically connected with PN532 radio frequency chip U1, second end 322 through second resistance R2,
Second capacitor C2 and the second inductance L2 are electrically connected with PN532 radio frequency chip U1, the both ends of third capacitor C3 be electrically connected in
The branch that ground terminal 323 and the first inductance L1 are connect with first capacitor C1, the both ends of the 4th capacitor C4 are electrically connected in connecing
The branch that ground terminal 323 and the second inductance L2 are connect with the second capacitor C2, the both ends of the 5th capacitor C5 are electrically connected in ground connection
The branch that 323 and first capacitor C1 of end is connect with first resistor R1, the both ends of the 7th capacitor C7 are electrically connected in ground terminal
The branch that 323 and first capacitor C1 is connect with first resistor R1, the both ends of the 6th capacitor C6 are electrically connected in ground terminal 323
And second branch that is connect with second resistance R2 of capacitor C2, the both ends of the 8th capacitor C8 be electrically connected in ground terminal 323 with
And second branch that is connect with second resistance R2 of capacitor C2, the first end of the first idle capacity C9 and third idle capacity C11's
First end is electrically connected the branch connected in first resistor R1 with first capacitor, the first end of the second idle capacity C10 and
The first end of four idle capacity C12 is electrically connected in the branch of second resistance R2 and the second capacitance connection.Wherein, in production electricity
When the plate of road, the first idle capacity C9, the second idle capacity C10, third idle capacity C11 and the 4th idle capacity C12 only connect
Connect one end, needed in the later period in use, again by the first idle capacity C9, the second idle capacity C10, third idle capacity C11 or
The other end of 4th idle capacity C12 be welded to corresponding position carry out using.
Referring to Fig. 3, power circuit 2 includes power input 21, the first filter circuit 22, voltage regulator circuit U2, the second filtering
Circuit 23 and power output end 24, input terminal of first filter circuit 22 respectively with power input 21 and voltage regulator circuit U2 are electrically connected
It connects, the second 23 circuits of filtering are electrically connected with the output end of voltage regulator circuit U2 and power output end 24 respectively.In the present embodiment, first
Filter circuit 22 includes capacitor C13, capacitor C14 and capacitor C15, and capacitor C13, capacitor C14 and capacitor C15 are connected in parallel.Second
Filter circuit 23 includes capacitor C16 and capacitor C17, and capacitor C16 and capacitor C17 are connected in parallel.Power circuit 2 is by power input
The high voltage direct current pressure stabilizing of 21 inputs meets the power demands of each circuit module at low-voltage DC.
Referring to fig. 4, buzzer circuit 5 includes buzzer BUZ and NPN triode Q1, the first end and power supply of buzzer BUZ
Circuit 2 is electrically connected, and the second end of buzzer BUZ is electrically connected with the collector of NPN triode Q1, the emitter of NPN triode Q1
The base stage of ground connection, NPN triode Q1 is electrically connected by terminal 51 with governor circuit 1.Buzzer circuit 5 can be used for carrying out sound and mention
Show.
Referring to Fig. 5, usb circuit 6 includes PNP triode Q2 and USB interface J1, the collector of PNP triode Q2 with
USB interface J1 electrical connection, the emitter of PNP triode Q2 are electrically connected with power circuit 2, and the base stage of PNP triode Q2 passes through end
Son 61 is electrically connected with governor circuit 1.Usb circuit 6 carries out information exchange for external device and radio frequency card detection device.
In addition, by Fig. 1 it is found that indicator light circuit 4 is electrically connected with governor circuit 1, in the present embodiment, indicator light circuit 4
Including RGB LED light (not shown), RGB LED light is electrically connected with power circuit 2 and governor circuit 1 respectively.Governor circuit 1 to
RGB LED light sends control signal, control, and RGB LED light is shown not under the different working condition of radio frequency card detection device
Same light, for example, issuing green light etc. when card reading is correct issuing feux rouges in card reading mistake.
It can be seen from the above, the first idle capacity is arranged in the radio frequency card detection device of the utility model in filter circuit 31
C9, the second idle capacity C10, third idle capacity C11 and the 4th idle capacity C12, circuit upgrading can be carried out convenient for the later period to be made
With, meanwhile, it can also be in first capacitor C1, the second capacitor C2, the 5th capacitor C5, the 6th capacitor C6, the electricity of the 7th capacitor C7 or the 8th
Hold C8 to occur being replaced use when matching problem, it is convenient for safeguarding.
It should be noted that the above is only the preferred embodiment of the utility model, but the design concept invented is not limited to
It is all to conceive the insubstantial modifications made to the utility model using this in this, also each fall within the protection scope of the utility model
Within.
Claims (5)
1. a kind of radio frequency card detection device, including governor circuit, power circuit and PN532 radio circuit, the power circuit
Power supply is provided to the governor circuit and the PN532 radio circuit, the governor circuit is electrically connected with the PN532 radio circuit
It connects；It is characterized by:
The PN532 radio circuit includes PN532 radio frequency chip, filter circuit and antenna, the filter circuit respectively with institute
State PN532 radio frequency chip and antenna electrical connection；
The antenna includes first end, second end and ground terminal, and the filter circuit includes the first inductance, the second inductance, first
It is capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th capacitor, the 8th capacitor, first spare
Capacitor, the second idle capacity, third idle capacity, the 4th idle capacity, first resistor and second resistance, the first end is through institute
It states first resistor, the first capacitor and first inductance to be electrically connected with the PN532 radio frequency chip, the second end warp
The second resistance, second capacitor and second inductance are electrically connected with the PN532 radio frequency chip, the third electricity
The both ends of appearance are electrically connected the branch connecting in the ground terminal and first inductance with the first capacitor, and described
The both ends of four capacitors are electrically connected the branch in the ground terminal and second inductance and second capacitance connection, institute
The both ends for stating the 5th capacitor are electrically connected the branch connecting in the ground terminal and the first capacitor with the first resistor
Road, the both ends of the 7th capacitor, which are electrically connected, to be connect in the ground terminal and the first capacitor with the first resistor
Branch, the both ends of the 6th capacitor are electrically connected in the ground terminal and second capacitor and the second resistance
The branch of connection, the both ends of the 8th capacitor are electrically connected in the ground terminal and second capacitor and described second
The branch of resistance connection, the first end of the first end of first idle capacity and the third idle capacity be electrically connected in
The branch that the first resistor is connected with the first capacitor, the first end of second idle capacity and the 4th standby electricity
The first end of appearance is electrically connected in the branch of the second resistance and second capacitance connection.
2. radio frequency card detection device according to claim 1, it is characterised in that:
The power circuit includes power input, the first filter circuit, voltage regulator circuit, the second filter circuit and power supply output
End, first filter circuit are electrically connected with the input terminal of the power input and the voltage regulator circuit respectively, and described second
Filter circuit is electrically connected with the output end of the voltage regulator circuit and the power output end respectively.
3. radio frequency card detection device according to claim 1 or 2, it is characterised in that:
The radio frequency card detection device further includes indicator light circuit, and the indicator light circuit is electrically connected with the governor circuit.
4. radio frequency card detection device according to claim 1 or 2, which is characterized in that
The radio frequency card detection device further includes buzzer circuit, and the buzzer circuit is electrically connected with the governor circuit.
5. radio frequency card detection device according to claim 1 or 2, which is characterized in that
The radio frequency card detection device further includes usb circuit, and the usb circuit is electrically connected with the governor circuit
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820752899.6U CN208207097U (en) | 2018-05-18 | 2018-05-18 | A kind of radio frequency card detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820752899.6U CN208207097U (en) | 2018-05-18 | 2018-05-18 | A kind of radio frequency card detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208207097U true CN208207097U (en) | 2018-12-07 |
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ID=64517620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820752899.6U Active CN208207097U (en) | 2018-05-18 | 2018-05-18 | A kind of radio frequency card detection device |
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| Country | Link |
|---|---|
| CN (1) | CN208207097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111402831A (en) * | 2020-04-23 | 2020-07-10 | 溢洋光电（深圳）有限公司 | Card of embedded bistable liquid crystal low-power consumption flexible display unit |
-
2018
- 2018-05-18 CN CN201820752899.6U patent/CN208207097U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111402831A (en) * | 2020-04-23 | 2020-07-10 | 溢洋光电（深圳）有限公司 | Card of embedded bistable liquid crystal low-power consumption flexible display unit |
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