CN215219768U - NFC passive lock device - Google Patents
NFC passive lock device Download PDFInfo
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- CN215219768U CN215219768U CN202023169135.0U CN202023169135U CN215219768U CN 215219768 U CN215219768 U CN 215219768U CN 202023169135 U CN202023169135 U CN 202023169135U CN 215219768 U CN215219768 U CN 215219768U
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Abstract
The utility model provides a passive lock equipment of NFC, include: the system comprises an MCU module, an electric quantity storage management module and a motor driving module; wherein: the NFC mobile phone or the NFC reader-writer circularly and continuously carries out card searching operation; the MCU module is arranged in the NFC electromagnetic field, receives a card searching request of the NFC mobile phone or the NFC read-write machine, returns a card UID to the NFC mobile phone or the NFC read-write machine through the electromagnetic field according to a corresponding instruction, and charges the electric quantity storage management module after the MCU module obtains electricity from the electromagnetic field; the NFC mobile phone or the NFC read-write tool transmits authentication information to the MCU module for authentication in a communication mode of the NFC near field channel, and the MCU module controls the motor driving module to unlock under the condition that the authentication is passed. The utility model discloses a do not have under the battery power supply to acquire the energy from cell-phone NFC or NFC reading and writing machines to and wireless communication control tool to lock switch action.
Description
Technical Field
The utility model relates to a wireless communication field particularly, relates to a passive lock equipment of NFC.
Background
The traditional mechanical lock has gone through the history of hundreds of years, and the function and the performance of the traditional mechanical lock almost reach the extreme. However, the requirements of modern people on high reliability, high safety, informatization, intellectualization and the like of the lock still cannot be met, and along with the development and application of semiconductor technology, the electronic lock with various shapes and colors and rich functions is generated.
At present, the NFC card is widely applied to the fields of finance, transportation and the like, and the technology is compatible with various applications and widely used. The wireless communication function of NFC and the energy transfer effect of an electromagnetic field can be effectively applied to a passive working environment.
The passive lock of NFC is a branch in electronic lock field, and its and general electronic lock's the biggest difference lies in, separates electronic lock's working power supply, has solved some difficult problems of general electronic lock: consume a large amount of batteries, have a complex structure, need frequent maintenance and the like. However, the existing NFC passive lock circuit is complex and high in cost.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a passive locking equipment of NFC to it is complicated, with high costs technical problem to solve current passive locking circuit at least.
According to the utility model discloses an embodiment provides a passive locking equipment of NFC, its and outside NFC cell-phone or the cooperation of NFC reading and writing machines, the passive locking equipment of NFC includes: the system comprises an MCU module with an NFC channel and energy collection, an electric quantity storage management module and a motor driving module; wherein:
activating an NFC electromagnetic field by an NFC mobile phone or an NFC reading and writing machine, and circularly and continuously carrying out card searching operation;
the MCU module is arranged in the NFC electromagnetic field, receives a card searching request of the NFC mobile phone or the NFC read-write machine, returns a card UID to the NFC mobile phone or the NFC read-write machine through the electromagnetic field according to a corresponding instruction, and charges the electric quantity storage management module after the MCU module obtains electricity from the electromagnetic field;
the NFC mobile phone or the NFC read-write tool transmits authentication information to the MCU module for authentication in a communication mode of the NFC near field channel, and the MCU module controls the motor driving module to unlock under the condition that the authentication is passed.
Furthermore, after the lock is unlocked, the MCU module starts a timer to delay, and the power supply of the electric quantity storage management module is used for controlling the motor driving module to carry out lock closing operation.
Further, the MCU module starts a timer delay 5S after unlocking.
Furthermore, the NFC mobile phone or the NFC reader-writer encrypts the authentication information through the SM4 algorithm and transmits the encrypted authentication information to the MCU module.
Further, if the authentication information is not verified, the MCU module returns authentication failure information through the NFC near field channel, and the NFC mobile phone or the NFC reader-writer resends the authentication information.
Furthermore, after the lock is unlocked, the NFC mobile phone or the NFC reading and writing tool closes the NFC magnetic field and is separated from the connection with the MCU module.
Further, the MCU module comprises a 13.56M coupling coil and an MCU control circuit.
Furthermore, the electric quantity storage management module comprises a capacitor module and a capacitor charging and discharging management circuit.
Furthermore, the electric quantity storage management module comprises a limiting circuit, a charging protection circuit, a capacitor module and a filtering and voltage stabilizing circuit which are sequentially connected, wherein the limiting circuit is connected with a Vout pin of the MCU module, and the filtering and voltage stabilizing circuit is connected with a VCC pin of the MCU module.
Further, the model of the MCU module is RJWF 303.
The embodiment of the utility model provides an in NFC passive lock equipment, realized obtaining the energy from cell-phone NFC or NFC reading and writing machines under the battery-free power supply to and wireless communication control tool to lock switch action. Adopt the MCU of customization to realize NFC near field communication and electromagnetic field energy collection, accomplish NFC near field communication authentication back operation motor drive module and carry out tool to lock control, use single-chip to realize the circuit control, the circuit of function simplification NFC passive lock equipment such as data communication and energy collection, reduce product cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a frame diagram of the NFC passive lock device of the present invention;
fig. 2 is a frame diagram of the power storage management module in the NFC passive lock device of the present invention;
fig. 3 is the utility model discloses the work flow chart of passive lock equipment of NFC.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
According to the utility model discloses an embodiment provides a NFC passive lock equipment, refers to fig. 1, provides a NFC passive lock equipment, and it cooperates with outside NFC cell-phone or NFC reading and writing machines, and NFC passive lock equipment includes: the system comprises an MCU module with an NFC channel and energy collection, an electric quantity storage management module and a motor driving module; wherein:
activating an NFC electromagnetic field by an NFC mobile phone or an NFC reading and writing machine, and circularly and continuously carrying out card searching operation;
the MCU module is arranged in the NFC electromagnetic field, receives a card searching request of the NFC mobile phone or the NFC read-write machine, returns a card UID to the NFC mobile phone or the NFC read-write machine through the electromagnetic field according to a corresponding instruction, and charges the electric quantity storage management module after the MCU module obtains electricity from the electromagnetic field;
the NFC mobile phone or the NFC read-write tool transmits authentication information to the MCU module for authentication in a communication mode of the NFC near field channel, and the MCU module controls the motor driving module to unlock under the condition that the authentication is passed.
The embodiment of the utility model provides an in NFC passive lock equipment, realized obtaining the energy from cell-phone NFC or NFC reading and writing machines under the battery-free power supply to and wireless communication control tool to lock switch action. Adopt the MCU of customization to realize NFC near field communication and electromagnetic field energy collection, accomplish NFC near field communication authentication back operation motor drive module and carry out tool to lock control, use single-chip to realize the circuit control, the circuit of function simplification NFC passive lock equipment such as data communication and energy collection, reduce product cost.
After unlocking, the MCU module starts a timer for delaying, and the power supply of the electric quantity storage management module is used for controlling the motor driving module to carry out locking operation.
And after unlocking, the MCU module starts a timer for delaying for 5S.
The NFC mobile phone or the NFC reading and writing tool encrypts the authentication information through the SM4 algorithm and transmits the encrypted authentication information to the MCU module.
And if the authentication information is not verified, the MCU module returns authentication failure information through the NFC near field channel, and the NFC mobile phone or the NFC read-write tool resends the authentication information.
After the lock is unlocked, the NFC mobile phone or the NFC reading and writing tool closes the NFC magnetic field and is separated from the MCU module.
Wherein, the MCU module contains 13.56M coupling coil, MCU control circuit.
The electric quantity storage management module comprises a capacitor module and a capacitor charging and discharging management circuit.
The electric quantity storage management module comprises a limiting circuit, a charging protection circuit, a capacitor module and a filtering and voltage stabilizing circuit which are sequentially connected, wherein the limiting circuit is connected with a Vout pin of the MCU module, and the filtering and voltage stabilizing circuit is connected with a VCC pin of the MCU module.
The model of the MCU module is RJWF 303.
With specific embodiment, below, to the utility model discloses a NFC passive lock equipment explains in detail:
there has been multiple passive lock scheme on the market at present, the utility model has the advantages of realize single-chip energy acquisition, data communication and tool to lock control, the circuit is simple, low in product cost. The utility model discloses a passive lock equipment of NFC uses cell-phone NFC near field communication to get the electricity from the electromagnetic field and be used for supplying with motor drive's energy. The NFC passive lock device includes: the device comprises an electric quantity storage management module, an MCU module with an NFC channel and energy collection and a motor driving module. The electric quantity storage management module comprises a capacitor module and a capacitor charging and discharging management circuit. Take NFC passageway and energy acquisition's MCU module to contain 13.56M coupling coil, MCU control circuit etc. and this MCU module can carry out near field communication through NFC and can get the electricity from 13.56M electromagnetic field simultaneously, charges to electric quantity storage management module. This passive locking device of NFC has used the secret SM4 algorithm of state to encrypt the wireless communication channel, uses single-chip to realize functions such as circuit control, data communication and energy acquisition simultaneously and simplifies the circuit of the passive locking device of NFC, reduces product cost.
The utility model provides a passive locking equipment of NFC, this passive locking equipment of NFC has realized obtaining the energy from cell-phone NFC or NFC reading and writing machines under the battery-free power supply to and the wireless encryption communication control tool to lock switch action. The NFC passive lock device comprises an electric quantity storage management module, an MCU module with an NFC channel and energy collection and a motor driving module. And the customized MCU is adopted to realize NFC near-field communication and electromagnetic field energy acquisition, and the motor driving module is operated to control the lockset after the NFC near-field communication authentication is completed. The NFC passive lock device framework is shown in fig. 1.
The electric quantity storage management module is a module for managing acquired energy after the customized MCU gets electricity from the electromagnetic field, and the main block diagram of the electric quantity storage management module is shown in fig. 2 (Vout is a power supply output port, and VCC is a power supply port).
Referring to fig. 3, the working principle is as follows:
activating a 13.56M electromagnetic field through an NFC mobile phone APP or an NFC read-write machine tool, and circularly and continuously carrying out card searching operation;
placing the NFC passive lock device in an NFC electromagnetic field, and after receiving a card searching request, the MCU (with the model of RJWF303) returns a card UID through the electromagnetic field according to a corresponding instruction;
the MCU charges the electric quantity storage management module through an electric quantity acquisition pin (Vout) at the same time;
the NFC mobile phone APP or the NFC read-write tool encrypts the related authentication information through a SM4 algorithm and transmits the information to the NFC passive lock device through an NFC channel;
after receiving the authentication information, the NFC passive lock equipment decrypts the data and verifies the authentication information;
if the authentication information is not verified, returning authentication failure information through NFC, and the NFC mobile phone APP or the NFC read-write tool needs to resend the authentication information;
if the authentication is passed, the MCU controls the motor driving module to carry out unlocking operation;
after the lock is unlocked, the NFC mobile phone or the NFC reading and writing tool can close the NFC magnetic field to be disconnected and physically separated;
and the MCU starts the timer to delay for 5S, and controls the motor driving module to carry out locking operation by using the power supply of the electric quantity storage management module.
The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described system embodiments are merely illustrative, and for example, a division of a unit may be a logical division, and an actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The utility model provides a NFC passive lock equipment, its with outside NFC cell-phone or NFC read-write machines cooperation, its characterized in that, NFC passive lock equipment includes: the system comprises an MCU module with an NFC channel and energy collection, an electric quantity storage management module and a motor driving module; wherein:
the NFC mobile phone or the NFC reading and writing tool is used for activating an NFC electromagnetic field, circularly and continuously carrying out card searching operation, and is also used for transmitting authentication information to the MCU module for authentication in a communication mode of an NFC near field channel;
the MCU module is arranged in the NFC electromagnetic field and used for receiving a card searching request of the NFC mobile phone or the NFC read-write machine and returning a card UID to the NFC mobile phone or the NFC read-write machine through the electromagnetic field according to a corresponding instruction, the MCU module charges the electric quantity storage management module after taking electricity from the electromagnetic field, and the MCU module is also used for controlling the motor driving module to carry out unlocking operation under the condition of passing authentication;
the MCU module comprises a 13.56M coupling coil and an MCU control circuit;
the electric quantity storage management module comprises a limiting circuit, a charging protection circuit, a capacitor module and a filtering and voltage stabilizing circuit which are sequentially connected, wherein the limiting circuit is connected with a Vout pin of the MCU module, and the filtering and voltage stabilizing circuit is connected with a VCC pin of the MCU module.
2. The NFC passive lock device of claim 1, wherein the MCU control circuit is of type RJWF 303.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023169135.0U CN215219768U (en) | 2020-12-24 | 2020-12-24 | NFC passive lock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023169135.0U CN215219768U (en) | 2020-12-24 | 2020-12-24 | NFC passive lock device |
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| Publication Number | Publication Date |
|---|---|
| CN215219768U true CN215219768U (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023169135.0U Active CN215219768U (en) | 2020-12-24 | 2020-12-24 | NFC passive lock device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115131899A (en) * | 2022-06-24 | 2022-09-30 | 广东电网有限责任公司 | Passive lock for secondary equipment of transformer substation and unlocking method thereof |
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2020
- 2020-12-24 CN CN202023169135.0U patent/CN215219768U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115131899A (en) * | 2022-06-24 | 2022-09-30 | 广东电网有限责任公司 | Passive lock for secondary equipment of transformer substation and unlocking method thereof |
| CN115131899B (en) * | 2022-06-24 | 2023-08-18 | 广东电网有限责任公司 | Unlocking method and device applied to passive lock of secondary equipment of transformer substation |
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Address after: 430000 building 01, building 15, optical valley wisdom Park, No.7, financial port 1st Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan ruinajie Semiconductor Co.,Ltd. Address before: 430073 building 01, building 15, optical valley wisdom Park, No.7, financial port 1st Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee before: WUHAN RUINAJIE ELECTRONIC TECHNOLOGY CO.,LTD. |