CN201351402Y - Electronic lock based on identification - Google Patents

Abstract

The utility model discloses an electronic lock based on identification, which has the advantages that a metal protrusion is arranged on the lock body, the lock body and the metal protrusion are insulated by an insulating layer, a metal sheet is arranged on the key handle, and a metal plate is arranged in the key handle. There is an information circuit, a first metal wire is connected between the controller and the lock body, and a second metal wire is connected between the controller and the metal protrusion. When the key body is inserted into the lock cylinder, the first metal wire, the lock body, the lock cylinder and the key The body constitutes the first wire, the controller, the first wire and the information circuit serve as an electrical signal path, and when the metal protrusion and the metal sheet are in contact, the second metal wire, the metal protrusion and the metal sheet constitute the second wire, and the controller, the second wire and the The information circuit is another electrical signal path. The two electrical signal paths realize the communication between the controller and the information circuit. In the communication process, there is no need for electromagnetic wave transmission medium, and because the communication is realized through wires, the communication between the two is not affected. The influence of other electromagnetic waves enhances the anti-interference ability.

Description

An electronic lock based on identification

technical field

The utility model relates to a lockset, in particular to an electronic lock based on identification.

Background technique

Radio Frequency Identification (RFID, Radio Frequency Identification) technology is a technology that uses radio frequency to read and write data through external materials. It combines radio frequency identification technology with IC (Integrated Circuit, integrated circuit) card technology and can be used for long-distance, moving targets, Wireless identification technology has the advantages of non-contact, large working distance, high precision, fast information collection and processing, large information storage capacity, all-weather work and good application environment adaptability. It can be used to identify a single specific object, and can also be used for Identify multiple objects. The basic RFID system usually includes tags (ie transponders) and readers, each tag has a unique identification code (ie ID number), the tag is attached to the object to identify the target object; the reader is used to read or write The tag information, the tag and the reader communicate with each other through the electromagnetic waves sent by the antenna.

The RFID system has been widely used in various fields, especially in the application of identification. It is a core accessory that is easy to use and low in cost in identification and management, such as applied to smart door locks. At present, the smart door lock using the RFID system usually includes a key composed of an RFID tag, a reader-writer installed in the lock head, a lock body control circuit, a lock body and a mechanical linkage mechanism. The lock body control circuit is connected to the reader-writer It is connected with the lock body and the mechanical linkage mechanism; however, the lock body and the mechanical linkage mechanism as the actuator are generally metal, which isolates the electromagnetic induction between the reader and the RFID tag. It is necessary to specially design a non-metallic one for transmitting electromagnetic waves. window; the window has low mechanical strength and is easily damaged, and the door lock has poor anti-interference ability, and the communication between the reader and RFID tag is easily affected by the electromagnetic wave transmission medium; the communication between the reader and RFID tag The communication distance is short, so the reader is limited in the lock head, and the application of the RFID system in the lock is therefore greatly limited.

Contents of the invention

The technical problem to be solved by the utility model is to provide an identification-based electronic lock with strong anti-interference ability, safe and reliable operation, and simple structure.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: an electronic lock based on identity recognition, including a metal lock, a metal key and a controller. The metal lock is mainly composed of a lock body, and the lock body is set There is a lock core, the metal key is mainly composed of a key body and a key handle, the controller is connected with an external actuator, the lock body is provided with a metal protrusion, the lock body is connected with the An insulating layer is provided between the metal protrusions, the key handle is provided with a metal sheet for contacting the metal protrusions, and the key handle is provided with an information circuit carrying identity information, so The information circuit described above is respectively connected with the key body and the metal sheet, the first metal wire is connected between the controller and the lock body, and the controller is connected with the metal protrusion A second metal wire is connected between them.

The key body and the lock cylinder form a first contact switch, and the metal protrusion and the metal sheet form a second contact switch. When the first contact switch is closed and conducting, the The first metal wire, the lock body, the lock cylinder and the key body constitute the first wire, and the second metal wire, the metal The protruding metal sheet constitutes the second wire.

The controller includes an identifier and a conductor. The identifier is mainly composed of a first control circuit and a first metal coil connected to the first control circuit. The first control circuit communicates with the first control circuit through a control bus. The external actuator is connected, the information circuit is a radio frequency identification card, and the radio frequency identification card is mainly composed of a second control circuit and a second metal coil connected to the second control circuit, and the first metal The first end of the coil is connected to the first end of the second metal coil through the second wire, and the conductor is connected to the second end of the second metal coil through the first wire .

The identifier identifies the identity information carried in the radio frequency identification card through the second wire, and controls the execution state of the external actuator according to the identified identity information.

The conductor is an object made of conductive material exposed to space.

The area of the object exposed to the space is greater than or equal to 100cm ² .

The controller includes a recognizer, and the recognizer is mainly composed of a first control circuit and a first metal coil connected to the first control circuit, and the first control circuit communicates with the outside through a control bus device connection, the information circuit is a radio frequency identification card, the radio frequency identification card is mainly composed of a second control circuit and a second metal coil connected to the second control circuit, the first metal coil The first end is connected to the first end of the second metal coil through the second wire, and the second end of the first metal coil is connected to the second metal coil through the first wire. The second end connection.

The identifier identifies the identity information carried in the radio frequency identification card through the first wire and the second wire, and controls the execution state of the external actuator according to the identified identity information.

Compared with the prior art, the utility model has the advantages that the lock body is provided with a metal protrusion, the lock body and the metal protrusion are insulated by an insulating layer, the key handle is provided with a metal sheet for contacting the metal protrusion, and the key An information circuit is arranged in the handle, and the information circuit is respectively connected with the key body and the metal sheet, the first metal wire is connected between the controller and the lock body, the second metal wire is connected between the controller and the metal protrusion, and the key body and the metal sheet are connected. The lock core constitutes a first contact switch. When the first contact switch is closed and conducting, that is, when the key body is inserted into the lock core, the first metal wire, the lock body, the lock core and the key body constitute the first wire, and the two ends of the first wire The controller and the information circuit are respectively connected as an electrical signal path. The metal protrusion and the metal sheet form a second contact switch. When in contact, the second metal wire, metal protrusion and metal sheet constitute the second wire, and the two ends of the second wire are respectively connected to the controller and the information circuit as another electrical signal path. The two electrical signal paths realize the connection between the controller and the information circuit. In the communication process, there is no need to use electromagnetic wave transmission medium, and because the communication is realized through wires, the communication between the two is not affected by other electromagnetic waves, thereby enhancing the anti-interference ability of the communication process and making the electronic lock work more. In order to be safe and reliable, and increase the transmission distance, it can reach more than 4 meters; the information circuit in the utility model can directly use a radio frequency identification card, and the communication between the identifier and the radio frequency identification card is realized through wires, although the radio frequency identification card Deviated from the original intention of its design for radio frequency identification, but the utility model can be applied to many occasions and can achieve a good identification effect, such as in a strong electromagnetic wave environment, in an environment with limited direction of radio frequency identification cards, with In the environment where the metal isolation layer is separated, in the environment where the distance exceeds the radio frequency wireless identification distance, etc.; in addition, the utility model has a simple structure and is easy to use, and the identifier in this lockset is no longer required to be limited in the lock head, which can be greatly improved. Enhance the application performance of locks.

Description of drawings

Fig. 1 is a structural schematic block diagram of the utility model;

Fig. 2 is the schematic diagram of the connection between the controller and the information circuit of the specific embodiment one of the present invention;

Fig. 3 is a schematic diagram of the connection between the controller and the information circuit in Embodiment 2 of the present invention.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

Embodiment 1: As shown in Figure 1 and Figure 2, an electronic lock based on identification includes a metal lock 1, a metal key 2 and a controller 3, the metal lock 1 is mainly composed of a lock body 11, and the lock body 11 is provided with There is a lock core 12, and the metal key 2 is mainly composed of a key body 21 and a key handle 22. The lock body 11 is provided with a metal protrusion 4, and an insulating layer 9 is arranged between the lock body 11 and the metal protrusion 4. The insulating layer 9 The function is mainly to prevent the formation of a conductive path between the lock body 11 and the metal protrusion 4. The key handle 22 is provided with a metal sheet 5 for contacting the metal protrusion 4, and the positions of the metal protrusion 4 and the metal sheet 5 correspond to each other. That is, when the key body 21 is inserted into the lock cylinder 12 and rotated to the bottom, the metal sheet 5 contacts the metal protrusion 4, and the key handle 22 is provided with an information circuit 6 carrying identity information, and the information circuit 6 is connected to the key body 21 and the key body 21 respectively. The metal sheet 5 is connected, the first metal wire 71 is connected between the controller 3 and the lock body 11, the second metal wire 72 is connected between the controller 3 and the metal protrusion 4, the controller 3 communicates with the external actuator through the control bus 31 8 connections.

The key body 21 and the lock cylinder 12 form a first contact switch K1, and the metal protrusion 4 and the metal sheet 5 form a second contact switch K2, as shown in FIG. 2 . When the first contact switch K1 is closed and turned on, that is, when the key body 21 is inserted into the lock core 12, the first metal wire 71, the lock body 11, the lock core 12 and the key body 21 constitute the first wire i, and the controller 3, the first The wire i and the information circuit 6 form an electrical signal path. When the second contact switch K2 is closed and turned on, that is, when the key body 21 rotates to the bottom in the lock cylinder 12, the metal protrusion 4 and the metal sheet 5 are in contact, the second metal wire 72, the metal protrusion 4 and the metal sheet 5 constitute the second wire. j, the controller 3, the second wire j and the information circuit 6 form another electrical signal path, and the two electrical signal paths realize the communication between the controller 3 and the information circuit 6, and there is no need to use an electromagnetic wave transmission medium during the communication process. And because the communication is realized through wires, the communication between the two is not affected by other electromagnetic waves, thereby enhancing the anti-interference ability and increasing the transmission distance.

The controller 3 includes an identifier 32 and a conductor 33. The identifier 32 is mainly composed of a first control circuit a and a first metal coil d connected to the first control circuit a. The first control circuit a communicates with the external actuator through a control bus 31 8 connections, the information circuit 6 is a radio frequency identification card, the radio frequency identification card is mainly composed of the second control circuit e and the second metal coil h connected to the second control circuit e, the first end c of the first metal coil d passes through the second The wire j is connected to the first end g of the second metal coil h, and the conductor 33 is connected to the second end f of the second metal coil h through the first wire i. The recognizer 32 recognizes the identity information carried in the radio frequency identification card through the second wire j, and controls the execution state of the external actuator 8 according to the recognized identity information. In this specific embodiment, the conductor 33 is an object exposed to the space made of conductive material, and the area of the object exposed to the space should be greater than or equal to 100 cm ² , the larger the area of the conductor 33 exposed to the space, the identifier can be The more accurate the radio frequency signal transmission between 32 and the radio frequency identification card, the higher the recognition rate of the identifier 32 identifying the radio frequency identification card, the conductor 33 can also be a human body, and when the conductor 33 is a human body, the identifier 32 identifies the identification of the radio frequency identification card The effect is better; the external actuator 8 can be an alarm, or an indicator, or another electronic lock or the like.

In practical application, it should be noted that if one end of the first metal coil d is connected to the power supply voltage, this end cannot be used as the first end c, that is, this end cannot be connected to the first end g of the second metal coil h.

Apply the electronic lock given in this embodiment to an electric bicycle, only use one key, the length of the first metal wire 71 can be about 60cm, the external actuator 8 is the motor controller of the electric bicycle, and the electric bicycle frame can be used as Conductor 33, using the electronic lock of the present utility model can reach the effect of electronic anti-theft. The specific working process is as follows:

1. Insert the key body 21 of the metal key 2 into the lock cylinder 12 of the metal lock 1 installed on the electric bicycle;

2. Turn the key handle 22 to drive the lock cylinder 12 to turn on the main power supply of the electric bicycle. When the metal key 2 is rotated to the end, the metal sheet 5 contacts the metal protrusion 4. At this time, the second end of the second metal coil h f form an electrical signal path through the key body 21, the lock cylinder 12, the lock body 11, the first metal wire 71 and the vehicle frame of the electric bicycle;

3. The identifier 32 starts to work, and obtains the identity information carried in the radio frequency identification card through the second metal wire 72, the metal protrusion 4 and the metal sheet 5;

4. The recognizer 32 analyzes the identified identity information, compares it with the identity information stored in the recognizer 32 and judges whether it is legal;

5. If the identity information is legal, the motor of the electric vehicle is allowed to work, otherwise the motor of the electric vehicle is prohibited from working;

6. If the identity information is legal, the identifier 32 is closed, otherwise, the identity information carried in the radio frequency identification card is reacquired.

In the actual application process, since the key body 21 will rebound slightly after rotating to the bottom in the lock cylinder 12, the metal piece 5 and the metal protrusion 4 are no longer in contact at this time, and the metal piece 5 and the metal protrusion 4 need to be artificially brought into contact again. , the recognizer 32 reacquires the identity information carried in the radio frequency identification card.

Embodiment 2: As shown in Figure 1 and Figure 3, this embodiment is basically the same as Embodiment 1, the only difference is that the controller 3 only includes an identifier 32, and the identifier 32 is mainly composed of the first control circuit a and the second A control circuit a is composed of a first metal coil d connected, the first control circuit a is connected to the external actuator 8 through the control bus 31, the information circuit 6 is a radio frequency identification card, and the radio frequency identification card is mainly composed of the second control circuit e and the second control circuit e Two control circuits e are connected to the second metal coil h, the first end c of the first metal coil d is connected to the first end g of the second metal coil h through the second wire j, and the second end of the first metal coil d b is connected to the second end f of the second metal coil h through the first wire i. The identifier 32 identifies the identity information carried in the radio frequency identification card through the first wire i and the second wire j, and controls the execution state of the external actuator 8 according to the identified identity information.

Claims (8)

1. An electronic lock based on identification, comprising a metal lock, a metal key and a controller, the metal lock is mainly composed of a lock body, the lock body is provided with a lock cylinder, and the metal key is mainly composed of a key Composed of a body and a key handle, the controller is connected to an external actuator, and it is characterized in that a metal protrusion is provided on the lock body, and an insulating layer is arranged between the lock body and the metal protrusion , the key handle is provided with a metal sheet for contacting with the metal protrusion, the key handle is provided with an information circuit carrying identity information, and the information circuit is respectively connected to the The key body is connected to the metal sheet, the first metal wire is connected between the controller and the lock body, and the second metal wire is connected between the controller and the metal protrusion. 2. An electronic lock based on identification according to claim 1, characterized in that said key body and said lock cylinder form a first contact switch, said metal protrusion and said metal sheet A second contact switch is formed. When the first contact switch is closed and conducting, the first metal wire, the lock body, the lock cylinder and the key body constitute the first wire. When the second contact switch is closed and turned on, the second metal wire, the metal protrusion and the metal sheet form a second wire. 3. An electronic lock based on identification according to claim 2, characterized in that said controller includes an identifier and a conductor, and said identifier is mainly composed of a first control circuit and said first The first metal coil connected to the control circuit is composed of the first control circuit connected to the external actuator through the control bus, the information circuit is a radio frequency identification card, and the radio frequency identification card is mainly composed of the second control circuit and the The second metal coil connected to the second control circuit is formed, the first end of the first metal coil is connected to the first end of the second metal coil through the second wire, and the The conductor is connected to the second end of the second metal coil through the first wire. 4. An electronic lock based on identity recognition according to claim 3, characterized in that said identifier recognizes the identity information carried in said radio frequency identification card through said second wire, and obtains The identity information controls the execution state of the external executor. 5. An electronic lock based on identification according to claim 3 or 4, characterized in that said conductor is an object made of conductive material and exposed in space. 6. An electronic lock based on identification according to claim 5, characterized in that the area of the object exposed to the space is greater than or equal to 100cm ² . 7. An electronic lock based on identity recognition according to claim 2, characterized in that said controller includes an identifier, and said identifier is mainly composed of the first control circuit and said first control circuit connected first metal coil, the first control circuit is connected to the external actuator through the control bus, the information circuit is a radio frequency identification card, and the radio frequency identification card is mainly composed of the second control circuit and the The second metal coil connected to the second control circuit, the first end of the first metal coil is connected to the first end of the second metal coil through the second wire, the first The second end of the metal coil is connected to the second end of the second metal coil through the first wire. 8. An electronic lock based on identity recognition according to claim 7, characterized in that the identifier identifies the radio frequency identification card carried in the radio frequency identification card through the first wire and the second wire. identity information, and control the execution state of the external executor according to the identified identity information.

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