CN207882982U - A kind of intelligent attendance system based on RFID - Google Patents
A kind of intelligent attendance system based on RFID Download PDFInfo
- Publication number
- CN207882982U CN207882982U CN201820080965.XU CN201820080965U CN207882982U CN 207882982 U CN207882982 U CN 207882982U CN 201820080965 U CN201820080965 U CN 201820080965U CN 207882982 U CN207882982 U CN 207882982U
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- Prior art keywords
- resistance
- infrared
- amplifier
- system based
- rfid
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Abstract
The utility model discloses a kind of intelligent attendance systems based on RFID, including the first infrared inductor, the second infrared inductor, RFID reader devices, pressure sensitive device, controller and communication module, first infrared inductor is set to the outside at the top of doorframe, second infrared inductor is set to the inside of doorframe bottom, the utility model can be widely applied to access control and attendance technical field as a kind of intelligent attendance system based on RFID.The combination for pressure signal these three signals that the certificate signal and pressure sensitive device that infrared induction signal that the utility model is obtained by the first infrared inductor and the second infrared inductor, RFID reader devices obtain obtain carries out attendance, solve the problems, such as that traditional IC swipes the card for checking card, improve the accuracy rate of attendance, equipment cost is reduced, access control and attendance technical field is can be widely applied to.
Description
Technical field
The utility model is related to access control and attendance technical field, especially a kind of intelligent attendance system based on RFID.
Background technology
One important component of personnel attendance system action business administration, it directly influences benefit and the member of enterprise
The problem of all various aspects such as the wages of work.Meanwhile in campus, the quality of student attendance also contributes to the teaching matter of school
The life development of amount and student from now on.Therefore, how it is more efficient easily employee or student attendance situation are examined,
Have become a very important project.
Existing attendance checking system generally uses that IC swipes the card, fingerprint is checked card or based on the mode of checking card that other biological identifies,
Wherein, the mode that IC swipes the card be susceptible to for check card the case where, it is not accurate enough, and based on bio-identification check card equipment cost compared with
Height and not easy care.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is that：A kind of accuracy rate height and at low cost, base are provided
In the intelligent attendance system of RFID.
Technical solution adopted in the utility model is：
A kind of intelligent attendance system based on RFID, including the first infrared inductor, the second infrared inductor, RFID
Reader device, pressure sensitive device, controller and communication module, first infrared inductor are set to outer at the top of doorframe
Side, second infrared inductor are set to the inside of doorframe bottom, and first infrared inductor includes the first infrared hair
Head and the first infrared receiving terminal are penetrated, second infrared inductor includes the second infrared emission head and the second infrared receiving terminal,
The output end of first infrared emission head connects the input terminal of the first infrared receiving terminal, the output of second infrared emission head
The input terminal of the second infrared receiving terminal of end connection, the output of the output end, the second infrared receiving terminal of first infrared receiving terminal
The output end at end, the output end of RFID reader devices and pressure sensitive device is connect with the input terminal of controller, the communication
Module connects controller.
Further, the pressure sensitive device includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th electricity
Resistance, the 6th resistance, the 7th resistance, varistor, power supply, the first amplifier, the second amplifier and third amplifier, described first
The other end of one end of one end connection second resistance of resistance, the second resistance is separately connected the positive input of the second amplifier
The one end at end and varistor, the other end of the varistor are separately connected one end of power supply and 3rd resistor, the third
The other end of resistance is separately connected the normal phase input end of one end and the first amplifier of first resistor, first amplifier it is anti-
Phase input terminal be separately connected one end of the 4th resistance, the first amplifier output end and the 5th resistance one end, described second puts
The inverting input of big device be separately connected the other end of the 4th resistance, the second amplifier output end and the 6th resistance one end,
The inverting input of the other end connection third amplifier of 6th resistance, the other end of the 5th resistance are separately connected the
The output end of the normal phase input end of one end and third amplifier of seven resistance, the third amplifier is separately connected the 7th resistance
The other end and controller.
Further, the pressure sensitive device is set to seat bottom or threshold bottom.
Further, further include display module, the output end of the input terminal connection controller of the display module.
Further, the display module is lcd12864 Liquid Crystal Modules.
Further, further include voice module, the output end of the input terminal connection controller of the voice module.
Further, the voice module is CX850-24QS chips.
Further, the controller is macrocrystalline stc15f2k60s2 microcontrollers.
Further, the communication module is nrf24l01 wireless communication modules.
Further, the RFID reader devices are JT-2850RFID module for reading and writing.
The utility model has the beneficial effects that：The utility model is filled by the first infrared inductor and the second infrared induction
Set the infrared induction signal of acquisition, the pressure signal that the certificate signal that RFID reader devices obtain and pressure sensitive device obtain
The combinations of these three signals carries out attendance, solve the problems, such as that traditional IC swipes the card for checking card, improve the accuracy rate of attendance；Again
Person, infrared inductor, RFID reader devices and the pressure sensitive device that the utility model uses, compared to existing based on biology
The attendance checking system of the equipment of identification, greatly reduces equipment cost；In addition, first infrared inductor of the utility model is set to
Outside at the top of doorframe, the second infrared inductor are set to the inside of doorframe bottom, can prevent mosquito from flying over caused error count
Number, further improves the accuracy rate of work attendance statistics.
Description of the drawings
Fig. 1 is a kind of overall structure block diagram of intelligent attendance system based on RFID of the utility model；
Fig. 2 is the circuit diagram of the pressure sensitive device of the utility model；
Fig. 3 is the mounting structure schematic diagram of first infrared inductor and the second infrared inductor of the utility model.
Specific implementation mode
The utility model is further explained and is illustrated with specific embodiment with reference to the accompanying drawings of the specification.
Referring to Figure 1 and Figure 3, a kind of intelligent attendance system based on RFID, including it is the first infrared inductor, second infrared
Sensing device, RFID reader devices, pressure sensitive device 3, controller and communication module, first infrared inductor are set
Outside in 4 top of doorframe, second infrared inductor are set to the inside of 4 bottom of doorframe, the first infrared induction dress
It sets including the first infrared emission head 11 and the first infrared receiving terminal 12, second infrared inductor includes the second infrared emission
First 21 and second infrared receiving terminal 22, the output end of first infrared emission head 11 connect the input of the first infrared receiving terminal 12
End, the output end of second infrared emission head 21 connect the input terminal of the second infrared receiving terminal 22, first infrared receiver
First 12 output end, the output end of the second infrared receiving terminal 22, the output end of RFID reader devices and pressure sensitive device it is defeated
Outlet is connect with the input terminal of controller, and the communication module connects controller.
Wherein, the first infrared inductor and the second infrared inductor are used to obtain infrared induction signal, Ta Mendou
The 2A21 infrared sensors of Bo Yu positive electrons Co., Ltd manufacture can be used to realize.Infrared inductor is connected by spi interfaces
Connect controller.In addition, first infrared inductor of the utility model is set to the outside at the top of doorframe, the second infrared inductor
Inside set on doorframe bottom, it is such design be on the one hand to identify user entrance and go out, be on the other hand in order to
Prevent mosquito from flying over caused miscount；The flight path of mosquito is all nearly parallel to ground under normal circumstances, and two pairs
Infrared upright position is different, can be effectively prevented the miscount caused by mosquito.Such design substantially increases accuracy,
Improve the anti-interference ability and stability of system.
RFID reader devices, the certificate signal for obtaining user.The prompt logical limited public affairs of science and technology can be used in RFID reader devices
The JT-2850RFID module for reading and writing of manufacture is taken charge of to realize, is connected by spi Interface and Controler.
Pressure sensitive device, for obtaining pressure sensor signal.Circuit as shown in Figure 2 can be used in pressure sensitive device
It realizes.
Controller, for according to the first infrared inductor, the second infrared inductor, RFID reader devices and feeling of stress
The signal for answering device to obtain triggers corresponding control signal, and sends control signals to communication module, display module and voice
Module etc..Controller is realized using macrocrystalline stc15f2k60s2 microcontrollers.
Communication module, for realizing the real-time communication of controller and remote back-office system.Communication module can be used
Nrf24l01 wireless communication modules are realized, are connected by spi Interface and Controler.
With reference to Fig. 2, it is further used as preferred embodiment, the pressure sensitive device includes first resistor R1, second
Resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, varistor Rt, electricity
Source, the first amplifier A1, the second amplifier A2 and third amplifier A3, the first resistor R1 one end connection second resistance R2
One end, the other end of the second resistance R2 be separately connected the second amplifier A2 normal phase input end and varistor Rt one
End, the other end of the varistor Rt are separately connected one end of power supply and 3rd resistor R3, and the 3rd resistor R3's is another
End is separately connected the normal phase input end of one end and the first amplifier A1 of first resistor R1, and the reverse phase of the first amplifier A1 is defeated
Enter end be separately connected one end of the 4th resistance R4, the first amplifier A1 output end and the 5th resistance R5 one end, described second
The inverting input of amplifier A2 is separately connected the output end and the 6th resistance of the other end of the 4th resistance R4, the second amplifier A2
One end of R6, the inverting input of the other end connection third amplifier A3 of the 6th resistance R6, the 5th resistance R5's
The other end is separately connected the normal phase input end of one end and third amplifier A3 of the 7th resistance R7, and the third amplifier A3's is defeated
Outlet is separately connected the other end and controller of the 7th resistance R7.
Wherein, the operation principle of circuit as shown in Figure 2 is as follows：
In the circuit, first resistor, second resistance, 3rd resistor and varistor Compositional balance electric bridge, varistor
For obtaining ambient pressure；4th resistance is for partial pressure and current limliting；Three amplifiers are used to amplification current signal.When pressure-sensitive
Resistance is under pressure when stimulating, then the balance of electric bridge will be broken, and a faint voltage Ui is generated in circuit and is input to
In third stage amplifier, Ui is by two amplifiers of A1 and A2 and then is respectively transmitted to the normal phase input end and anti-phase input of A3
End, the amplified voltage signal u of final output0.In actual use, the 4th resistance is changed to slide rheostat, by adjusting cunning
Dynamic rheostat accesses the resistance value of circuit to change the amplification factor of voltage, and then to the voltage signal u of final output0It is adjusted
Section.The voltage signal of final output is exported to the I/O interface ends of controller, triggers corresponding control signal.
With reference to Fig. 3, it is further used as preferred embodiment, the pressure sensitive device 3 is set to seat bottom or threshold
Bottom 5.
Wherein, it is to be applied to some indoor (such as classroom, meeting rooms etc.) to carry that pressure sensitive device, which is set to seat bottom,
The attendance place at a large amount of seats, pressure sensitive device are set to seat bottom or threshold bottom, can obtain personnel take a seat signal or
Person passes in and out the signal at gate, in conjunction with the attendance signal that infrared inductor and RFID reader devices obtain, improves attendance accuracy rate,
It avoids occurring for phenomenon of checking card.
Referring to Fig.1, it is further used as preferred embodiment, further includes display module, the input terminal of the display module
Connect the output end of controller.
Wherein, display module is shown for the control signal according to controller into row information.Display module can be used
Lcd12864 Liquid Crystal Modules are realized, are connect with controller by parallel port.
It is further used as preferred embodiment, the display module is lcd12864 Liquid Crystal Modules.
Referring to Fig.1, it is further used as preferred embodiment, further includes voice module, the input terminal of the voice module
Connect the output end of controller.
Wherein, voice module carries out speech play for the control signal according to controller.Wound can be used in voice module
The CX850-24QS chips of only rump electron Science and Technology Ltd. manufacture are realized, are connect with controller by serial ports.
It is further used as preferred embodiment, the voice module is CX850-24QS chips.
It is further used as preferred embodiment, the controller is macrocrystalline stc15f2k60s2 microcontrollers.
It is further used as preferred embodiment, the communication module is nrf24l01 wireless communication modules.
The utility model uses wireless communication mode, realizes the data transmission across space, can save conducting wire, and then reduce
Cost so that whole system is succinct, and flexibility is high.
It is further used as preferred embodiment, the RFID reader devices are JT-2850RFID module for reading and writing.
A kind of course of work of the intelligent attendance system based on RFID of the utility model is as follows：
Attendance process：When user gets in from the gate for the infrared inductor for being equipped with the utility model, position
First infrared inductor in the outside at the top of doorframe gets subscriber signal first, is then located at the inside of doorframe bottom
Second infrared inductor gets subscriber signal, and controller is sequentially received infrared induction signal twice, it is determined that attendance people
It gets in (if controller is sequentially received the signal of the second infrared inductor and the first infrared inductor, it is determined that have
People walks out outdoor)；RFID reader device user in real certificate signal (such as with IC chip employee's card and identity card
Deng)；The signal that pressure sensitive device positioned at threshold bottom can be got in user in real is located at the pressure of seat bottom
The signal that power sensing device can be taken a seat with user in real.After all attendance signals of acquisition are sent to remotely by communication module
Platform system can determine that on-site attendance number and midway leave number, avoid allograph situation, realize intelligent Checking on Work Attendance.
Displaying process：According to the signal that attendance process obtains, the corresponding control signal of controller triggering to display module into
Row attendance number shows that list of showing up is shown, also sends control signals to voice module and carries out corresponding speech play.
It is to be illustrated to the preferable implementation of the utility model, but the utility model is not limited to the reality above
Mode is applied, those skilled in the art can also make various be equal without departing from the spirit of the present invention
Deformation is replaced, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of intelligent attendance system based on RFID, it is characterised in that：Including the first infrared inductor, the second infrared induction
Device, RFID reader devices, pressure sensitive device, controller and communication module, first infrared inductor are set to door
The outside of arch, second infrared inductor are set to the inside of doorframe bottom, and first infrared inductor includes
First infrared emission head and the first infrared receiving terminal, second infrared inductor include that the second infrared emission head and second are red
Outer reception head, the output end of first infrared emission head connect the input terminal of the first infrared receiving terminal, the second infrared hair
The output end for penetrating head connects the input terminal of the second infrared receiving terminal, and the output end of first infrared receiving terminal, second infrared connect
The output end for receiving the output end of head, the output end of RFID reader devices and pressure sensitive device connects with the input terminal of controller
It connects, the communication module connects controller.
2. a kind of intelligent attendance system based on RFID according to claim 1, it is characterised in that：The pressure sensitive dress
It sets including first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, pressure-sensitive electricity
Resistance, power supply, the first amplifier, the second amplifier and third amplifier, the one of one end connection second resistance of the first resistor
End, the other end of the second resistance are separately connected the normal phase input end of the second amplifier and one end of varistor, the pressure
The other end of quick resistance is separately connected one end of power supply and 3rd resistor, and the other end of the 3rd resistor is separately connected the first electricity
The inverting input of the normal phase input end of one end of resistance and the first amplifier, first amplifier is separately connected the 4th resistance
One end, the output end of the first amplifier and the 5th resistance one end, the inverting input of second amplifier is separately connected
One end of the other end of four resistance, the output end of the second amplifier and the 6th resistance, the other end connection the of the 6th resistance
The inverting input of three amplifiers, the other end of the 5th resistance are separately connected one end and the third amplifier of the 7th resistance
The output end of normal phase input end, the third amplifier is separately connected the other end and controller of the 7th resistance.
3. a kind of intelligent attendance system based on RFID according to claim 1, it is characterised in that：The pressure sensitive dress
It is arranged in seat bottom or threshold bottom.
4. a kind of intelligent attendance system based on RFID according to claim 1, it is characterised in that：It further include display mould
Block, the output end of the input terminal connection controller of the display module.
5. a kind of intelligent attendance system based on RFID according to claim 4, it is characterised in that：The display module is
Lcd12864 Liquid Crystal Modules.
6. a kind of intelligent attendance system based on RFID according to claim 1, it is characterised in that：It further include voice mould
Block, the output end of the input terminal connection controller of the voice module.
7. a kind of intelligent attendance system based on RFID according to claim 6, it is characterised in that：The voice module is
CX850-24QS chips.
8. a kind of intelligent attendance system based on RFID according to claim 1, it is characterised in that：The controller is macro
Brilliant stc15f2k60s2 microcontrollers.
9. a kind of intelligent attendance system based on RFID according to claim 1, it is characterised in that：The communication module is
Nrf24l01 wireless communication modules.
10. a kind of intelligent attendance system based on RFID according to claim 1, it is characterised in that：The RFID Card Readers
Device is JT-2850RFID module for reading and writing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820080965.XU CN207882982U (en) | 2018-01-17 | 2018-01-17 | A kind of intelligent attendance system based on RFID |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820080965.XU CN207882982U (en) | 2018-01-17 | 2018-01-17 | A kind of intelligent attendance system based on RFID |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207882982U true CN207882982U (en) | 2018-09-18 |
Family
ID=63507188
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820080965.XU Expired - Fee Related CN207882982U (en) | 2018-01-17 | 2018-01-17 | A kind of intelligent attendance system based on RFID |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207882982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109636939A (en) * | 2018-12-19 | 2019-04-16 | 张秀英 | Attendance is registered system |
-
2018
- 2018-01-17 CN CN201820080965.XU patent/CN207882982U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109636939A (en) * | 2018-12-19 | 2019-04-16 | 张秀英 | Attendance is registered system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180918 Termination date: 20210117 |