Digital encryption safety electronic key for mechatronics intelligent door lock

Abstract

The invention discloses a digital encryption safety electronic key for a mechatronics intelligent door lock. The digital encryption safety electronic key comprises a key body, an insulating shell, an induction ring, a protective cover and a main control circuit board, the key body comprises a negative plate and a positive plate; the insulation shell is arranged on the negative plate and the positive plate through thermoplastic forming, the induction ring is arranged on an installation step at the front end part of the insulation shell, and the main control circuit board is arranged in the insulation shell. According to the digital encryption safety electronic key for the mechatronics intelligent door lock, through unique arrangement of the key body structure and cooperation of the key body structure and the main control circuit board, the traditional unlocking problem of copying mechanical teeth is solved, registration or logout of the electronic key can be set through the lock body, illegal unlocking caused by logout of the key is avoided, and the safety of the door lock is improved. And through a plurality of mechanical and electronic security detection settings, the security is extremely high.

Description

Technical Field

[0001] The present invention relates to the technical field of smart locks, and in particular to a digitally encrypted security electronic key for a mechatronic smart door lock. Background Art

[0002] The existing traditional door lock keys rely solely on the height difference of the mechanical key teeth, matching the height difference of the single or multiple rows of marble pits in the rotating lock cylinder inside the lock head or the left and right staggered gaps of the mechanical key blades to ensure the security of the lock. There are also a few electronic digital keys with a single chip built in, such as button keys, which have a built-in identity identification code. The access control system determines the key identity by reading the identity identification code. This type of electronic key solidifies the identity identification code in the IC card through a reader / writer. It carries limited information and cannot meet the security permission management requirements. It cannot overcome the disadvantage of being able to open the lock by copying the mechanical key teeth, and has a low safety factor. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a digital encrypted security electronic key for a mechatronic smart door lock, which is automatically activated by a living body and has multiple security guarantees, overcoming the disadvantage that the existing key teeth can be copied to open the door.

[0004] The technical solution adopted in the present invention is: A digital encryption security electronic key for a mechatronic intelligent door lock, comprising a key body, an insulating shell, an induction ring, a protective cover and a main control circuit board; The key body includes a negative plate and a positive plate; the upper portion of the negative plate is a circular handle portion, and the lower portion is a thread portion that matches the lock core. The handle portion and the thread portion are transitioned through a step structure to form an integrated negative plate. A mounting groove is provided in the middle of the negative plate and extends to the bottom of the circular handle portion; the positive plate is arranged in the mounting groove through an insulating shell; The insulating shell is arranged on the negative plate and the positive plate by thermoplastic forming. The shape of the insulating shell matches the shape of the handle portion and the step portion of the negative plate. The upper circular portion of the insulating shell is located in the handle portion of the negative plate and protrudes on both sides of the negative plate. The inner wall of the upper circular portion is provided with mounting steps at both ends. The lower portion of the insulating shell is located in the mounting groove of the negative plate. The positive plate of the key body is arranged at the lower portion of the insulating shell and the upper end of the positive plate protrudes from the inner wall of the insulating shell. The induction ring is arranged on the mounting step at the front end of the insulating shell, and the outer end of the induction ring is also arranged as a step structure; the protective cover includes a front and a rear piece, the front protective cover is buckled and arranged on the inner wall of the induction ring, and the rear protective cover is buckled and arranged on the mounting step at the rear end of the insulating shell, and a space for installing the main control circuit board is formed between the front and rear protective covers and the insulating shell; The main control circuit board is arranged in the insulating shell, with the front of the main control circuit board facing the side of the front protective cover. A card slot is provided at the lower part of the main control circuit board. The main control circuit board is clamped on the end of the positive plate through the card slot, and the induction ring and the negative plate are both connected to the main control circuit board.

[0005] Specifically, the positive electrode plate is in a convex shape, and a limiting groove is provided in the middle of the bottom to prevent it from falling out.

[0006] Specifically, the front and rear protective covers are both installed through corresponding buckles and slots, and the front protective cover is made of transparent material.

[0007] Specifically, a connecting piece is protruding from the inner wall of the induction ring, and a connecting plate is provided on the inner wall of the handle portion above the negative plate. The connecting plate protrudes from the inner wall of the insulating shell, and the induction ring and the negative plate are electrically connected to the main control circuit board through the connecting piece and the connecting plate respectively.

[0008] More specifically, the main control circuit board includes a battery, a serial number chip DS2401, an LED, a voltage regulator diode D1, and transistors Q1-Q4; the battery is set on the back of the main control circuit board, and the DS2401 and other components are set on the front of the main circuit board; the negative plate of the key body is connected to the ground terminal of the DS2401 as the sensing point J1, the ground terminal of the DS2401 is connected to the negative terminal of the battery, and the DATA terminal of the DS2401 is connected to the positive plate of the key body; the induction ring is used as the sensing point J3, and the sensing point J3 is connected to the base of the transistor Q4 through the resistor R3; the positive terminal of the battery is connected to the emitter of the transistor Q4 and the collector of the transistor Q2 electrode, the emitter of transistor Q2 is connected to the positive electrode of LED, the negative electrode of LED is grounded and connected to the collector of transistor Q1 and the emitter of transistor Q3 and connected to one end of resistor R1, the emitter of transistor Q1 is connected to the positive electrode of battery, the other end of resistor R1 is connected to the positive electrode of Zener diode D1, the base of transistor Q3 is connected between resistor R1 and Zener diode D1, one end of the negative electrode of Zener diode D1 is connected to the base of Q4, and resistor R2 is connected between the base and emitter of transistor Q4.

[0009] More specifically, a radio frequency sensing chip S50 is further provided on the main control circuit board. The radio frequency sensing chip S50 is used to work synchronously with the lock mainboard with an induction coil and is used to unlock the lock by swiping a card.

[0010] More specifically, the LED is a low-frequency multi-color light-emitting diode with a built-in radio frequency tube. When the LED is lit, it emits a radio frequency signal. The radio frequency signal is sent to the receiving signal component set on the front panel motherboard of the lock to verify the key again, realizing double security and confidentiality functions.

[0011] Due to the adoption of the above technical solution, the present invention has the following advantages: The mechatronic smart door lock of the present invention uses a digitally encrypted security electronic key. Through the unique setting of the key body structure and the cooperation with the main control circuit board, it solves the problem of traditional copying mechanical teeth to open the lock. The electronic key can be registered or cancelled through the lock body to avoid illegal opening of the lock by canceling the key. If it is lost and then found, it can be re-registered and used. Through multiple mechanical and electronic safety detection settings, the security is extremely high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the entire present invention.

[0013] Figure 2 It is an exploded schematic diagram of the entire present invention.

[0014] Figure 3 It is a circuit principle diagram of the active circuit board of the present invention.

[0015] In the figure: 1-negative plate, 11-mounting slot, 12-connecting plate, 2-positive plate, 3-insulating shell, 4-induction ring, 41-connecting piece, 5-front protective cover, 6-rear protective cover, 7-main control circuit board. DETAILED DESCRIPTION

[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments, which should not be used to limit the scope of protection of the present invention. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0017] Combined with attachment Figure 1-3 The digital encryption security electronic key for a mechatronic smart door lock shown in the figure includes a key body, an insulating shell 3, an induction ring 4, a protective cover and a main control circuit board 7.

[0018] The key body includes a negative plate 1 and a positive plate 2; the upper part of the negative plate 1 is a circular handle part, and the lower part is a tooth part that cooperates with the lock core. The handle part and the tooth part are transitioned through a step structure to form an integrated negative plate 1. A mounting groove 11 is provided in the middle of the negative plate 1 and penetrates to the bottom of the circular handle part; a connecting plate 12 is provided on the inner wall of the handle part on the upper part of the negative plate 1, and the connecting plate 12 protrudes from the inner wall of the insulating shell 3. The negative plate 1 is electrically connected to the main control circuit board 7 through the connecting plate 12.

[0019] The positive plate and the negative plate are pre-embedded in the mold, and the insulating shell is set on the negative plate and the positive plate by thermoplastic forming. The shape of the insulating shell 3 is matched with the shape of the handle and the step portion of the negative plate 1. The upper circular ring portion of the insulating shell 3 is located in the handle portion of the negative plate 1 and protrudes on both sides of the negative plate 1. The front and rear ends of the inner wall of the upper circular ring portion are provided with installation steps. The lower part of the insulating shell 3 is located in the installation groove 11 of the negative plate 1. The positive plate 2 of the key body is set at the lower part of the insulating shell 3 and the upper end of the positive plate 2 protrudes from the inner wall of the insulating shell 3. The positive plate 2 has a convex structure, and a limiting groove is provided in the middle of the bottom to prevent it from falling out.

[0020] The induction ring 4 is arranged on the installation step at the front end of the insulating shell 3, and the outer end of the induction ring 4 is also arranged as a step structure; a connecting piece 41 is protruding from the inner wall of the induction ring 4, and the induction ring 4 is electrically connected to the main control circuit board 7 through the connecting piece 41.

[0021] The protective cover includes two pieces, front and rear. The front and rear protective covers are installed with the support through corresponding buckles and slots. The front protective cover 5 is made of transparent material. The front protective cover 5 is snap-fitted on the inner wall of the induction ring 4. The rear protective cover 6 is snap-fitted on the mounting step at the rear end of the insulating shell 3. A space for installing the main control circuit board 7 is formed between the front and rear protective covers 6 and the insulating shell 3.

[0022] The main control circuit board 7 is arranged in the insulating shell 3, with the front of the main control circuit board 7 facing the side of the front protective cover 5. A card slot is provided at the lower part of the main control circuit board 7. The main control circuit board 7 is clamped on the end of the positive plate 2 through the card slot, and the induction ring 4 and the negative plate 1 are both connected to the main control circuit board 7.

[0023] The main control circuit board 7 includes a button battery, a serial number chip DS2401, a low-frequency multi-color light-emitting diode LED, a voltage regulator diode D1, and transistors Q1-Q4; the battery is set on the back of the main control circuit board 7, and the DS2401 and other components are set on the front of the main control circuit board 7; the negative plate 1 of the key body serves as the sensing point J1 and is connected to the ground terminal of the DS2401. The ground terminal of the DS2401 is connected to the negative terminal of the battery, and the DATA terminal of the DS2401 is connected to the positive plate of the key body; the induction ring 4 serves as the sensing point J3, and the sensing point J3 is connected to the base of the transistor Q4 through the resistor R3; the positive terminal of the battery is connected to the emitter of the transistor Q4 and the emitter of the transistor Q 2, the emitter of transistor Q2 is connected to the positive electrode of LED, the cathode of LED is grounded and connected to the collector of transistor Q1 and the emitter of transistor Q3 and connected to one end of resistor R1, the emitter of transistor Q1 is connected to the positive electrode of battery, the other end of resistor R1 is connected to the positive electrode of Zener diode D1, the base of transistor Q3 is connected between resistor R1 and Zener diode D1, one end of the cathode of Zener diode D1 is connected to the base of Q4, and resistor R2 is connected between the base and emitter of transistor Q4.

[0024] The main control circuit board 7 is also provided with a radio frequency sensing chip S50, which is used to work synchronously with the lock mainboard having an induction coil.

[0025] The mechatronic intelligent door lock of the present invention uses a digitally encrypted security electronic key. A PNP transistor Q4 and an NPN transistor Q2 on a main control circuit board form a first Darlington transistor, while a PNP transistor Q1 and an NPN transistor Q3 form a second Darlington transistor. A voltage regulator diode D1 forms a detection electrode of this circuit via a resistor R3. When a human hand simultaneously touches sensing points J3 and J1, a base bias current is provided to transistor Q4, causing the current to amplify through the first Darlington transistor, thereby illuminating a low-frequency multi-color LED. The LEDs have built-in radio frequency tubes, which illuminate in an orderly manner while emitting radio frequency signals. These radio frequency signals are received by a signal receiving component on the front panel mainboard of the lock and communicate with the lock mainboard, thereby providing a secure communication and confidentiality function.

[0026] When the key is inserted into the lock guard of the lock body, the positive plate 2 of the key body is linearly connected to the positive electrode component inside the lock guard. The positive plate 2 is connected to the DATA terminal of DS2401, so that DS2401 can establish data communication with the lock main board through the lock guard component; the ground terminal of DS2401 is connected to the sensing point J1, that is, the negative plate 1 of the key body, thus forming a working closed loop of DS2401, which provides conditions for the security of the data connection between the key and the lock main board and the reliable operation of registration and deregistration. After DS2401 is activated, the encrypted signal in DS2401 is transmitted to the lock main board for data consistency comparison again, and then combined with the unified mechanical component requirements of the mechanical teeth and lock ball, the lock is unlocked.

[0027] The parts not described in detail in this invention are prior art.

[0028] The embodiments selected herein for the purpose of disclosing the invention are presently considered suitable, but it should be understood that the invention is intended to include all variations and modifications of the embodiments that fall within the scope of the concept and invention.

Claims

1. A digitally encrypted secure electronic key for a mechatronic smart door lock, characterized by: It includes a key body, an insulating shell, an induction ring, a protective cover and a main control circuit board; The key body includes a negative plate and a positive plate; the upper portion of the negative plate is a circular handle portion, and the lower portion is a thread portion that matches the lock core. The handle portion and the thread portion are transitioned through a step structure to form an integrated negative plate. A mounting groove is provided in the middle of the negative plate and extends to the bottom of the circular handle portion; the positive plate is arranged in the mounting groove through an insulating shell; The insulating shell is arranged on the negative plate and the positive plate by thermoplastic forming. The shape of the insulating shell matches the shape of the handle portion and the step portion of the negative plate. The upper circular portion of the insulating shell is located in the handle portion of the negative plate and protrudes on both sides of the negative plate. The inner wall of the upper circular portion is provided with mounting steps at both ends. The lower portion of the insulating shell is located in the mounting groove of the negative plate. The positive plate of the key body is arranged at the lower portion of the insulating shell and the upper end of the positive plate protrudes from the inner wall of the insulating shell. The induction ring is arranged on the mounting step at the front end of the insulating shell, and the outer end of the induction ring is also arranged as a step structure; the protective cover includes a front and a rear piece, the front protective cover is buckled and arranged on the inner wall of the induction ring, and the rear protective cover is buckled and arranged on the mounting step at the rear end of the insulating shell, and a space for installing the main control circuit board is formed between the front and rear protective covers and the insulating shell; The main control circuit board is arranged in the insulating shell, with the front of the main control circuit board facing the side of the front protective cover. A card slot is provided at the lower part of the main control circuit board. The main control circuit board is clamped on the end of the positive plate through the card slot, and the induction ring and the negative plate are both connected to the main control circuit board.

2. The digitally encrypted secure electronic key for a mechatronic smart door lock according to claim 1, characterized in that: The positive plate is in a convex shape, and a limiting groove is provided in the middle of the bottom to prevent it from falling out.

3. The digitally encrypted secure electronic key for a mechatronic smart door lock according to claim 1, characterized in that: The front and rear protective covers are both installed through corresponding buckles and slots, and the front protective cover is made of transparent material.

4. The digitally encrypted secure electronic key for a mechatronic smart door lock according to claim 1, characterized in that: A connecting piece is protruding from the inner wall of the induction ring, and a connecting plate is provided on the inner wall of the handle portion above the negative plate. The connecting plate protrudes from the inner wall of the insulating shell. The induction ring and the negative plate are electrically connected to the main control circuit board through the connecting piece and the connecting plate respectively.

5. The digitally encrypted secure electronic key for a mechatronic smart door lock according to claim 4, characterized in that: The main control circuit board includes a battery, a serial number chip DS2401, an LED, a voltage regulator diode D1, and transistors Q1-Q4; the battery is set on the back of the main control circuit board, and the DS2401 and other components are set on the front of the main control circuit board; the negative plate of the key body is connected to the ground terminal of the DS2401 as the sensing point J1, the ground terminal of the DS2401 is connected to the negative terminal of the battery, and the DATA terminal of the DS2401 is connected to the positive plate of the key body; the induction ring is used as the sensing point J3, and the sensing point J3 is connected to the base of the transistor Q4 through the resistor R3; the positive terminal of the battery is connected to the emitter of the transistor Q4 and the collector of the transistor Q2 electrode, the emitter of transistor Q2 is connected to the positive electrode of LED, the negative electrode of LED is grounded and connected to the collector of transistor Q1 and the emitter of transistor Q3 and connected to one end of resistor R1, the emitter of transistor Q1 is connected to the positive electrode of battery, the other end of resistor R1 is connected to the positive electrode of Zener diode D1, the base of transistor Q3 is connected between resistor R1 and Zener diode D1, one end of the negative electrode of Zener diode D1 is connected to the base of Q4, and resistor R2 is connected between the base and emitter of transistor Q4.

6. The digitally encrypted secure electronic key for a mechatronic smart door lock according to claim 5, characterized in that: The main control circuit board is also provided with a radio frequency sensing chip S50, which is used to work synchronously with the lock mainboard having an induction coil.

7. The digitally encrypted secure electronic key for a mechatronic smart door lock according to claim 5, characterized in that: The LED is a low-frequency multi-color light-emitting diode with a built-in radio frequency tube. When the LED is lit, it emits a radio frequency signal. The radio frequency signal is sent to the signal receiving component set on the front panel main board of the lock to verify the key communication.

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