CN111429623A - System for preventing wireless key signal from being cracked and interfered and using method thereof - Google Patents
System for preventing wireless key signal from being cracked and interfered and using method thereof Download PDFInfo
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- CN111429623A CN111429623A CN202010395424.8A CN202010395424A CN111429623A CN 111429623 A CN111429623 A CN 111429623A CN 202010395424 A CN202010395424 A CN 202010395424A CN 111429623 A CN111429623 A CN 111429623A
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- signal
- wireless key
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- key
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
- G07C2009/00793—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by Hertzian waves
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- General Physics & Mathematics (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention relates to the technical field of wireless keys, in particular to a system for preventing wireless key signals from being cracked and interfered and a using method thereof, wherein the system comprises an electronic access control, a wireless key and SDR equipment; the electronic access control is electrically connected with the SDR equipment; the SDR equipment is in wireless signal connection with the wireless key; the electronic entrance guard is connected with the wireless key through wireless signals. The invention can make the electromagnetic wave signal of the open-close lock of the wireless key carry out directional transmission and gain, effectively protects the safety of the electronic entrance guard of the user and prevents the same frequency signal interference transmitted by a common wireless interference device in the environment.
Description
Technical Field
The invention relates to the technical field of wireless keys, in particular to a system for preventing wireless key signals from being cracked and interfered and a using method thereof.
Background
Along with the development of the internet of things technology, people often use a wireless key to open and close the electronic door control in life, and the wireless key has the capability of remotely opening and closing the electronic door lock in a remote control mode. People can radiate electromagnetic wave unlocking signals to horizontal and vertical spaces around the key by pressing a lock opening and closing key of the wireless key, so that the wireless electronic access control is opened and closed. Although the technology brings great convenience to people, the wireless unlocking signal is easy to capture and record by lawbreakers and then is replayed and decoded to open and close the lock, so that the wireless electronic access control is illegally unlocked. Meanwhile, the lock opening and closing signal of the wireless key can be interfered and submerged by a large amount of interference signals sent by the interference device, so that a normal signal cannot be received by the electronic entrance guard, the electronic entrance guard cannot be normally opened and closed, and the personal and property safety of a user is threatened.
Therefore, it is necessary to design a structure for preventing signals of the wireless key lock and unlock lock from being recorded and cracked, and preventing signals of the wireless key lock and unlock lock from being interfered and covered by a conventional interference unit.
The problems of the current common wireless key are as follows: the method comprises the steps that an SDR device is used for detecting locking and unlocking signals for opening and closing the wireless electronic access control by a wireless key in a recording environment, when a wireless electronic access control system does not use a rolling code technology or an encryption technology is low, the SDR device detects the locking and unlocking signals sent by a common wireless key, the signals can be replayed and decoded, and the wireless electronic access control is opened, so that the risk that the hidden locking and unlocking signals of the wireless key are decoded is known; when the wireless key opens and closes the wireless electronic access control, the high-power signal emitter is used for sending the same frequency interference signal, and the opening and closing lock signal of the common key is submerged and covered by a large amount of interference signals, so that the condition that the opening and closing lock signal of the wireless key cannot normally work occurs.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a system for preventing the wireless key signal from being cracked and interfered and a using method thereof, which are convenient for knowing the risk that the hidden wireless key lock opening and closing signal is interfered. The wireless electronic door control system effectively prevents the wireless key lock opening and closing signal from being recorded unintentionally to cause the wireless electronic door control to be replayed and the opening and closing lock electromagnetic wave signal is cracked to be opened, and can effectively prevent the signal from being interfered by a high-power signal emitter to cause the situation that the electronic door control cannot be normally opened and closed. The specific technical scheme is as follows:
a system for preventing wireless key signals from being cracked and interfered comprises an electronic access control, a wireless key and SDR equipment; the electronic access control is electrically connected with the SDR equipment; the SDR equipment is in wireless signal connection with the wireless key; the electronic entrance guard is connected with the wireless key through wireless signals.
Furthermore, the wireless key is internally provided with a signal reflection layer, the outside of the wireless key is provided with a signal convergence layer, the signal convergence layer is connected with the wireless key shell, and the signal convergence layer is oval.
Preferably, the signal reflection layer is any one of a metal coating or a metal plate.
Preferably, the signal reflecting layer is in a folded inverted trapezoid shape; through setting up the reflection stratum for the scope of ellipsoid lobe radiation in front of wireless key forms signal gain, and the energy of radiation signal is concentrated more, improves signal transmission's power.
The invention discloses a use method of a system for preventing wireless key signals from being cracked and interfered, which comprises the following steps:
(1) starting a wireless key unlocking key, and sending an unlocking signal enhanced by reflection;
(2) the electronic entrance guard receives the unlocking signal and the lock is unlocked;
(3) and the SDR equipment monitors an unlocking electromagnetic wave signal sent by a wireless key in the environment and records and stores the signal.
Furthermore, the unlocking electromagnetic wave signal sent by the wireless key for controlling the SDR equipment to transmit records is received by the access control system, and then the lock is unlocked.
Compared with the prior art, the invention has the technical effects that:
according to the invention, through designing the signal convergence layer of the wireless key, an effective radiation area of a signal electromagnetic lobe of the wireless key lock opening and closing lock is formed in the wireless key, so that the interference is reduced; the reflection is enhanced by the signal reflecting layer.
The invention can make the opening and closing electromagnetic wave signal of the wireless key send directionally and gain, the user presses the opening key of the common wireless key, the SDR equipment can capture the wireless key opening electromagnetic wave signal in the environment, the equipment replays the opening and closing signal without using the rolling code technology, and the wireless door lock can be opened at will. The signal reflection layer is arranged in the wireless key, so that the unlocking wireless electromagnetic wave signal can be sent out from the space of the ellipsoidal lobe area in the front part of the wireless key, the unlocking electromagnetic wave signal can be effectively prevented from being captured by SDR equipment in other areas in the environment, the locking and unlocking signal can not be recorded and decoded, and the safety of electronic access control of a user can be effectively protected. Meanwhile, as the electromagnetic wave signals are reflected and gathered, signal gain can be formed in the radiation range of the ellipsoidal lobe in front of the wireless key, the energy of the radiation signals is more concentrated, the power of signal transmission is improved, and the effect of preventing the interference of the same-frequency signals sent by a common wireless interference device in the environment is achieved.
Drawings
FIG. 1 is a block diagram of a wireless key of the present invention;
in the figure: 1-signal convergence layer, 2-wireless key shell, 3-signal reflection layer.
Detailed Description
The technical solution of the present invention is further defined below with reference to the specific embodiments, but the scope of the claims is not limited to the description.
Example 1
Referring to fig. 1, a system for preventing wireless key signals from being cracked and interfered, the system comprises an electronic access control, a wireless key and SDR equipment; the electronic access control is electrically connected with the SDR equipment; the SDR equipment is in wireless signal connection with the wireless key; the electronic entrance guard is in wireless signal connection with the wireless key; the wireless key is characterized in that a signal reflection layer 3 is arranged inside the wireless key, a signal convergence layer 1 is arranged outside the wireless key, the signal convergence layer 1 is connected with a wireless key shell 2, and the signal convergence layer 1 is oval; the signal reflecting layer 3 is a metal coating; the signal reflection layer 3 is in a folded inverted trapezoid shape.
The use method of the system for preventing the wireless key signal from being cracked and interfering in the embodiment comprises the following steps:
(1) starting a wireless key unlocking key, and sending an unlocking signal enhanced by reflection;
(2) the electronic entrance guard receives the unlocking signal and the lock is unlocked;
(3) and the SDR equipment monitors an unlocking electromagnetic wave signal sent by a wireless key in the environment and records and stores the signal.
The system for preventing the wireless key signal from being cracked and interfered can also control the SDR equipment to transmit the recorded unlocking electromagnetic wave signal sent by the wireless key, and the lock is opened after the access control system receives the unlocking electromagnetic wave signal.
Therefore, it is necessary to design a structure which is universal and suitable for the wireless key and prevents the signals of the wireless key lock and the wireless key lock from being broken, recorded and decoded, and the signals of the wireless key lock and the wireless key lock are interfered by a conventional interference device and submerged.
Example 2
A system for preventing wireless key signals from being cracked and interfered comprises an electronic access control, a wireless key and SDR equipment; the electronic access control is electrically connected with the SDR equipment; the SDR equipment is in wireless signal connection with the wireless key; the electronic entrance guard is in wireless signal connection with the wireless key; the wireless key is characterized in that a signal reflection layer 3 is arranged inside the wireless key, a signal convergence layer 1 is arranged outside the wireless key, the signal convergence layer 1 is connected with a wireless key shell 2, and the signal convergence layer 1 is oval; the signal reflection layer 3 is a metal plate; the signal reflecting layer 3 is in a folded inverted trapezoid shape; a wireless key locking and unlocking signal electromagnetic lobe effective radiation area is formed in the signal convergence layer 1, so that interference is reduced; the reflection is enhanced by the signal reflecting layer 3.
The use method of the system for preventing the wireless key signal from being cracked and interfering in the embodiment comprises the following steps:
(1) starting a wireless key unlocking key, and sending an unlocking signal enhanced by reflection;
(2) the electronic entrance guard receives the unlocking signal and the lock is unlocked;
(3) and the SDR equipment monitors an unlocking electromagnetic wave signal sent by a wireless key in the environment and records and stores the signal.
The use method of the system for preventing the wireless key signal from being cracked and interfering can also control the SDR equipment to transmit the recorded unlocking electromagnetic wave signal sent by the wireless key, and the lock is unlocked after the access control system receives the unlocking electromagnetic wave signal.
Therefore, it is necessary to design a structure which is universal and suitable for the wireless key and prevents the signals of the wireless key lock and the wireless key lock from being broken, recorded and decoded, and the signals of the wireless key lock and the wireless key lock are interfered by a conventional interference device and submerged.
To verify the anti-interference and cracking effect of the invention, the design experiment is as follows:
comparative example 1, the difference with example 1 is that the wireless key does not have a binding layer; comparative example 2 is different from example 2 in that the wireless key is not provided with a reflective layer. In an access control system, the wireless keys of the embodiment 1-2 and the comparative example 1-2 are respectively used for sending an unlocking signal to an access control, and meanwhile, a high-power signal is used for transmitting a same-frequency electromagnetic wave signal to record the condition of opening a door lock; and set up SDR equipment beside the entrance guard, detect and have or not the signal of opening the door reveals.
The experimental results are as follows:
| door lock open condition | Signal leakage detection | |
| Example 1 | Open | Without leakage |
| Example 2 | Open | Without leakage |
| Comparative example 1 | Open | Leakage |
| Comparative example 2 | Is not opened | Leakage |
It can be seen from the table that, under the interference of the high-power signal transmitting the same-frequency electromagnetic wave signal, the comparative example 2 without the reflecting layer has a weak signal, the access control system cannot detect a signal with sufficient strength, and the door lock cannot be opened; the comparative example 1 without the bundling layer had a serious signal leakage and a risk of being cracked. The door lock of the embodiment 1-2 is opened, and no signal is leaked, so the invention can effectively prevent interference and prevent the signal from being cracked.
Claims (6)
1. A system for preventing wireless key signals from being cracked and interfered is characterized by comprising an electronic access control, a wireless key and SDR equipment; the electronic access control is electrically connected with the SDR equipment; the SDR equipment is in wireless signal connection with the wireless key; the electronic entrance guard is connected with the wireless key through wireless signals.
2. The system for preventing the wireless key signal from being cracked and interfered as recited in claim 1, wherein the wireless key is internally provided with a signal reflection layer, and externally provided with a signal convergence layer, the signal convergence layer is connected with the wireless key housing, and the signal convergence layer is oval.
3. The system for preventing the wireless key signal from being cracked and interfered as recited in claim 2, wherein the signal reflecting layer is any one of a metal coating or a metal plate.
4. The system of claim 2, wherein the signal reflecting layer has a closed inverted trapezoid shape.
5. A method for using the system for preventing the wireless key signal from being cracked and interfered as recited in any one of claims 1 to 4, comprising:
(1) starting a wireless key unlocking key, and sending an unlocking signal enhanced by reflection;
(2) the electronic entrance guard receives the unlocking signal and the lock is unlocked;
(3) and the SDR equipment monitors an unlocking electromagnetic wave signal sent by a wireless key in the environment and records and stores the signal.
6. The use method of the system for preventing the wireless key signal from being cracked and interfered as recited in claim 5, wherein the lock is unlocked after the entrance guard system receives the unlocking electromagnetic wave signal sent by the wireless key and recorded by controlling the SDR equipment to transmit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010395424.8A CN111429623A (en) | 2020-05-12 | 2020-05-12 | System for preventing wireless key signal from being cracked and interfered and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010395424.8A CN111429623A (en) | 2020-05-12 | 2020-05-12 | System for preventing wireless key signal from being cracked and interfered and using method thereof |
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| CN111429623A true CN111429623A (en) | 2020-07-17 |
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| CN202010395424.8A Pending CN111429623A (en) | 2020-05-12 | 2020-05-12 | System for preventing wireless key signal from being cracked and interfered and using method thereof |
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Citations (8)
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| US20060161314A1 (en) * | 2005-01-19 | 2006-07-20 | Hitachi, Ltd. | Software defined radio unit and vehicular information system |
| CN102820546A (en) * | 2012-07-31 | 2012-12-12 | 深圳光启创新技术有限公司 | Microwave antenna adopting metal ellipsoid and similar hyperbolic type metamaterial subreflector |
| CN104009288A (en) * | 2014-05-14 | 2014-08-27 | 上海交通大学 | Millimeter-wave wide-beam and high-gain lens antenna |
| CN107611587A (en) * | 2017-09-27 | 2018-01-19 | 广东通宇通讯股份有限公司 | A kind of low section super-wide band high-gain directional aerial and preparation method thereof |
| CN107719304A (en) * | 2017-09-22 | 2018-02-23 | 深圳市盛路物联通讯技术有限公司 | A kind of remote vehicle control method realized by antenna direction and system |
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2020
- 2020-05-12 CN CN202010395424.8A patent/CN111429623A/en active Pending
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| CN1186245A (en) * | 1996-11-18 | 1998-07-01 | 佛朗哥·巴尔迪 | Obstacle sensor operating by collimation and focusing of emitted wave |
| US20060161314A1 (en) * | 2005-01-19 | 2006-07-20 | Hitachi, Ltd. | Software defined radio unit and vehicular information system |
| CN102820546A (en) * | 2012-07-31 | 2012-12-12 | 深圳光启创新技术有限公司 | Microwave antenna adopting metal ellipsoid and similar hyperbolic type metamaterial subreflector |
| CN104009288A (en) * | 2014-05-14 | 2014-08-27 | 上海交通大学 | Millimeter-wave wide-beam and high-gain lens antenna |
| CN107719304A (en) * | 2017-09-22 | 2018-02-23 | 深圳市盛路物联通讯技术有限公司 | A kind of remote vehicle control method realized by antenna direction and system |
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Application publication date: 20200717 |