CN117765640A - Circuit detection system realized by integrating lock tongue of encryption card - Google Patents

Abstract

The invention discloses a safety circuit detection method realized by a lock tongue of an integrated encryption card, and relates to the technical field of the Internet of things. The method comprises the following steps: reading information in the lock tongue safety chip to the MCU control unit; binding the security chip information read in the MCU control unit; the encryption card activation binding is identified through the non-contact card reading chip; after the encryption card binding is activated, other cards will no longer be identified; after successful binding, the non-contact card reading chip monitors the system by detecting the bound encryption card. The method can effectively prevent the intelligent door lock equipment from being attacked maliciously to cause property loss and personal safety hidden trouble.

Description

Circuit detection system realized by integrating lock tongue of encryption card

Technical Field

The application relates to the field of intelligent security, in particular to a method for monitoring a door lock state.

Background

With the popularization of the internet of things, more and more devices are in the fields of intelligent home, intelligent security, industrial internet of things and the like. Especially in recent years, the rise of home cameras and intelligent door locks has led to the penetration of intelligent security devices into thousands of households.

The functions of the existing intelligent lock equipment are more and more enriched, and besides the basic fingerprint, password and card unlocking functions, the functions of face recognition unlocking and mobile phone APP remote unlocking are added. The specific lock types are also classified into a semiautomatic intelligent lock and a fully automatic intelligent lock. However, there is no secure way to detect the door lock closed state for any type of lock currently on the market. An intelligent door lock is a device that involves personal privacy, the security of which is of great importance. Most of the current door locks do not have a door lock state monitoring function. The common mechanical lock body on the market is locked by directly inserting the lock tongue into the lock groove, and whether the lock tongue is successfully locked is not detected. At present, a lock tongue part integrated chip of a lock body enables a lock tongue to have a card function, a circuit capable of detecting a card is added to a lock groove at the other end, the lock tongue card is bound through the lock groove circuit, and the lock groove circuit is used for detecting an encryption card to monitor the locking state of a door lock.

The analytical reasons can be summarized basically as follows:

1. the existing door lock generally monitors the door opening and closing state by using a Hall, monitors the door locking state by using the Hall, has no encryption setting and has no authentication mechanism, so that the door lock cannot play a real safety protection role.

2. The door lock design itself has a vulnerability and most door lock solutions do not monitor the open and closed door lock condition.

In order to solve the problem 1, the door locks with door opening/closing state detection function in the market are generally detected by using hall elements. There is a considerable safety risk. The hall sensor operates by detecting a change in the magnetic field. In other words, when the hall element is used for detecting the state of the door lock, the accuracy of detection can be interfered by randomly placing a magnet. The safety coefficient is greatly reduced.

In view of the above problem 2, the door lock manufacturer determines the door lock state by recording and feeding back the door opening and closing state of the software to the APP, and the door opening and closing state fed back by the software is not accurate in practice. If the key is used for opening and closing the lock, the safety state of the door lock cannot be recorded, and the user cannot monitor the current state of the door lock.

Disclosure of Invention

Aiming at the needs and the shortcomings of the prior art, the invention provides a door lock state safety monitoring method.

The invention relates to a door lock state safety monitoring method, which solves the technical problems and adopts the following technical scheme:

a method for detecting a safety circuit realized by integrating a lock tongue of an encryption card is based on a safety chip, an MCU control unit and a non-contact card reading module. The intelligent door lock monitoring system monitors whether the lock tongue of the door lock body is sprung into the lock groove or not to finish card detection, and ensures real-time monitoring of the door lock state.

The step of realizing the detection of the lock tongue comprises the following steps:

step one, integrating an encryption card on a lock tongue;

and step two, the encrypted card integrated on the lock tongue is close to the lock groove detection circuit, the encrypted card information is read, and the binding of the lock tongue encrypted card and the lock groove detection circuit is completed.

And thirdly, after the locking bolt encryption card is bound, the locking bolt encryption card safety detection circuit is successfully activated.

The specific system lock tongue binding process and card reading detection process comprise the following steps:

the system uses a security algorithm, uses an encryption chip to carry out card swiping identification, and the card needs to be bound. In the initial system state, the system detects that any card is close, and the system control board gives an instruction to the relay, and the relay is started. This is the initial state after leaving the factory, which is the experience mode. When the lock is normally used, the lock tongue is required to be bound, so that the safety of the system is ensured. After the card is bound, the system detects the card again, encryption card authentication can be performed, and the control panel can be started to send out instructions only through the card which is bound and then obtained through encryption authentication. Other cards will no longer be able to activate the system to issue instructions. A key is reserved on the inner side of the locking groove detection plate to perform card binding operation.

The specific binding flow is as follows:

1. pressing the key, the system enters a binding card state.

2. At this time, the door is locked, the lock tongue is ejected, and the system automatically detects the card, reads the card and binds the card information.

3. After successful binding, the door is opened, and then when the card is locked again, the system automatically detects whether the card is a bound encrypted card, verifies that the successful relay is opened, and confirms that the door lock state is closed.

The basic working principle of the system is that the two sides of the lock tongue and the lock groove are provided with internal antennas which can mutually sense within a certain distance, and the system is used as a means for monitoring the locking state of the door. The mechanical lock body adopts a plurality of lock bolts, one lock bolt adopts a plastic mold, is used for integrating the encryption card, and the other lock bolts adopt metal lock bolts without modification; the lock tongue of the plasticating mould integrates the card swiping chip and the coil in the lock tongue, and the inner side of the lock groove is integrated with the non-contact card reading module. When the door is in a normal closing state and the lock tongue is contracted, the detection system in the lock groove can not sense the existence of a part of the card of the lock tongue; the door is locked, the lock tongue card is ejected, the detection system in the lock groove senses that the card exists, the system reads the encrypted card information, the reading is correct, and the system control board gives an instruction to the relay, and the relay is opened.

Application method and operation flow

This design may be referred to as an "intelligent door lock condition monitoring system". The concrete implementation mode of the design is to reform the bolt part of the original common mechanical lock body. The original lock body lock tongue is replaced by a lock tongue integrating the function of an intelligent card, and the control and detection system is integrated in the lock groove. Closing the door lock, ejecting the lock tongue, enabling the lock tongue to extend into the lock groove, enabling a control board in the lock groove to detect that the card is close, comparing encryption information to be correct, enabling the system to judge that the door is locked, enabling the control board to give out an electric signal, and sending an instruction to confirm that the door lock is closed.

Software workflow:

the system has two modes, namely an experience mode and an operating mode. After the system is powered on, the card is detected, and when the existence of the card is detected, whether the card information is stored in the system is judged. If the card information is judged not to be stored, judging the experience mode. The card identification is successful, and the system control board sends out a level signal; if the system judges that the card password information is already stored, the system needs to compare the read card information with the card information stored in the system in the next step, and confirms that the card information is correct, and the system control board sends a level signal for successful card reading. If the card reading information is incorrectly compared with the system storage information, the card identification fails, the system considers that the card is invalid, a circuit response mechanism cannot be triggered, and the card reading identification operation continues to circularly read.

Compared with the prior art, the door lock state safety monitoring method has the beneficial effects that:

1) The invention is based on a safety chip, an MCU control unit and a non-contact card reading chip module. The method for detecting the encryption chip by using the MCU control unit has more stable and safe detection data, effectively reduces the false detection probability of the door lock, and has no potential safety hazards such as locking prompt and the like.

2) In the execution process of the method, card information needs to be read and stored in an encrypted mode. After the encryption card binding is activated, no third party card can be identified. Through the monitoring to inheriting card spring bolt state, the problem that general intelligent lock uses the key to open and close the door can't obtain the lock state has been effectively solved.

Drawings

FIG. 1 is a schematic flow chart of the system operation principle in the invention, and FIG. 2 is a use method and operation flow chart in the invention

In order to make the technical solution, the technical problems to be solved and the technical effects of the present invention more apparent, the technical solution of the present invention will be clearly and completely described below in connection with specific embodiments, and it is apparent that the described embodiments are only some of examples, but not all embodiments of the present invention. All embodiments obtained by a person skilled in the art without making any inventive effort are within the scope of the present invention based on the embodiments of the present invention.

Embodiment one:

the technical scheme relates to the combination of a hardware mechanical structure and an intelligent card reading circuit, and mainly utilizes a Radio Frequency Identification (RFID) technology to realize the card swiping of an induction coil. The anti-counterfeiting encryption is carried out by adopting the tongue lock binding, one set of system is bound by one tongue, and the double-end chip encryption is adopted, so that the safety and the reliability of the system are ensured. The mechanical structure change condition of the lock body is monitored by detecting the card state, the information of the encrypted card is read correctly, and the system sends out a signal to control the related linkage equipment to carry out the next operation.

Intelligent encryption card and lock plate control system binding

The intelligent encryption card firstly authenticates the system control board, and after the authentication is passed, the intelligent encryption card is mutually bound. In the binding process, the system control board can firstly acquire card information and store the card information data.

3) Compared with the background art, the invention has the beneficial effects that

1. The invention can monitor the state of the door lock in real time.

2. The intelligent card lock tongue encryption binding system is used, so that the door lock state can be accurately monitored in real time.

3. The lock tongue card information is stored by the control panel safety chip, and card information leakage can be effectively prevented.

4. Because the hardware circuit is used for monitoring the state of the door lock, the door lock is safe and reliable, and the problem that the state information of the door lock is lost after the door lock is opened and closed by using a physical key is effectively avoided.

The foregoing describes the principles and embodiments of the present invention in detail using specific examples, which are only for aiding in understanding the core technical content of the present invention, and are not intended to limit the scope of the present invention, but the technical solutions of the present invention are not limited to the foregoing specific embodiments. Based on the above-mentioned embodiments of the present invention, any improvements and modifications made by those skilled in the art without departing from the principles of the present invention should fall within the scope of the present invention.

Claims (2)

1. The method is characterized in that the method is based on a safety chip, an MCU control unit and a non-contact card reading module, and the circuit system monitors the system by the non-contact card reading chip through detecting the bound encryption card;

the method comprises the following implementation steps:

step one, after the system is powered on, the lock tongue of the integrated encryption storage card is close to the detection circuit, the safety monitoring circuit detects that the lock tongue of the integrated card is close, the non-contact card reading chip reads the card to judge whether the system stores card information or not, if the system judges that the card information is not stored,

judging the experience mode, successfully identifying the card, and sending a level signal by a system control board;

if the system judges that the card password information is already stored, the system needs to compare the read card information with the card information stored in the system in the next step, the card information is confirmed to be correct, the card reading is successful, the system control board sends out a level signal, if the card reading information is incorrectly compared with the system stored information, the card identification fails, the system judges that the card is invalid, a circuit response mechanism is not triggered, and the card reading identification operation continues to circularly read;

if the system judges that the card information is not stored, the system circuit does not respond, at the moment, a key is required to be set externally, the key is pressed to add the card, the read card information is stored in the MCU, the read card information is bound with the card information by a program, the MCU control unit identifies and binds the encrypted card information in the lock tongue, if the system judges that the card password information is stored, at the moment, the key is pressed, the card information is bound, the card binding fails, and the card reading operation is continued;

and step four, after the locking bolt encryption card is bound, the locking bolt encryption card safety detection circuit is successfully activated.

2. The method for detecting the security circuit by the lock tongue integrated with the encryption card according to claim 1, wherein the lock tongue is integrated with the encryption card, and the detection circuit detects the lock tongue to complete the card reading binding.