Electronic lead sealing device and control method

Abstract

The invention provides an electronic lead sealing device and a control method. The electronic lead sealing device comprises an electronic lock, two lock bodies and a lock chain. The lock chain comprises a first sub-chain segment, a second sub-chain segment and a resistor connected between the first sub-chain segment and the second sub-chain segment, the end, away from the resistor, of the first sub-chain segment is used for being connected with one lock body, and the end, away from the resistor, of the second sub-chain segment is used for being connected with the other lock body. The two lock bodies are connected with the two ends of the electronic lock through wires respectively. The electronic lock is provided with a processing module and a resistance value obtaining module. The resistance value obtaining module is used for obtaining the resistance value in an electric loop when the electronic lock, the lock body and the lock chain are connected to form the electric loop. The processing module is used for judging whether the chain is cut off based on the resistance value. According to the electronic lock, the electric loop is formed among the electronic lock, the lock body and the lock chain, and the specific resistor is arranged in the lock chain, so that whether the lock chain is cut off or lapped or not can be judged according to the monitored resistance value, and the safety performance is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent electronic locks, and particularly relates to an electronic seal device and a control method. Background Art

[0002] An electronic seal lock is a device used in scenarios with multiple security requirements, usually including components such as a lock body and a chain. Its working principle is to achieve an alarm function based on the mutual cooperation of each component and a specific design. That is, when the chain is maliciously removed, the response mechanism of the electronic seal lock will be triggered to achieve an alarm. However, in actual use, there is still a risk that the chain of the electronic seal lock is maliciously cut, and it is difficult to detect after the chain is cut, so the security performance of the electronic seal lock needs to be improved. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an electronic seal device and a control method, aiming to solve the problem that the security performance of the electronic seal lock in the related art needs to be improved.

[0004] To solve the above technical problem, the present invention is implemented as follows. On the one hand, an electronic seal device is provided, including: an electronic lock, two lock bodies, and a chain; the chain includes a first sub-chain segment, a second sub-chain segment, and a resistor connected between the first sub-chain segment and the second sub-chain segment. One end of the first sub-chain segment away from the resistor is used to connect to one of the lock bodies, and one end of the second sub-chain segment away from the resistor is used to connect to the other lock body; the two lock bodies are respectively connected and conducted to both ends of the electronic lock through wires; the electronic lock is configured with a processing module and a resistance value acquisition module. The resistance value acquisition module is used to acquire the resistance value in the electrical loop when an electrical loop is formed among the electronic lock, the lock body, and the chain, and transmit the resistance value to the processing module; the processing module is used to judge whether the chain is cut based on the resistance value.

[0005] Further, the first sub-chain segment includes a first wire segment and a first protective layer surrounding the outside of the first wire segment, and the second sub-chain segment includes a second wire segment and a second protective layer surrounding the outside of the second wire segment. The resistor is connected between the first wire segment and the second wire segment.

[0006] Further, both the first protective layer and the second protective layer are steel wire protective layers; both ends of the first wire segment are also respectively connected and conducted to the steel wires at both ends of the first protective layer, and both ends of the second wire segment are also respectively connected and conducted to the steel wires at both ends of the second protective layer.

[0007] Further, it further includes a rubber coating part, and the rubber coating part surrounds the outside of one end of the first sub-chain segment close to the resistor, the outside of the resistor, and the outside of one end of the second sub-chain segment close to the resistor.

[0008] Further, the lock body includes a ball, an elastic member, and a main body block provided with a receiving cavity; one end of the first sub-chain segment away from the resistor and one end of the second sub-chain segment away from the resistor are respectively used for plugging and assembling with the receiving cavity; an installation groove communicating with the receiving cavity is provided in the main body block, the size of the ball is adapted to the shape of the installation groove, and the diameter of the ball is smaller than the width of the receiving cavity, and one end of the elastic member is fixed to the bottom of the receiving groove; when the first sub-chain segment is inserted into the receiving cavity, the ball abuts between the first sub-chain segment and the free end of the elastic member; when the second sub-chain segment is inserted into the receiving cavity, the ball abuts between the second sub-chain segment and the free end of the elastic member.

[0009] Further, the ball is a conductor, and a contact switch connected to a wire is further provided in the installation groove; when the first sub-chain segment and the second sub-chain segment are respectively plugged into the corresponding receiving cavities in place, the chain, the ball, and the wire are electrically connected.

[0010] Further, the included angle formed between the elastic contraction direction of the elastic member and the plugging direction of the first sub-chain segment or the second sub-chain segment is less than 90°.

[0011] Further, it further includes a position inspection module electrically connected to the processing module, and the position inspection module is used to obtain the position information of the chain; the processing module is further used to judge whether the chain is cut based on the position information, and / or, used to judge whether the chain is connected to the lock body in place.

[0012] Further, the resistance value acquisition module is a voltage detection circuit, and the voltage detection circuit is used to obtain the voltage values at both ends of the electronic lock and transmit the two voltage values to the processing module; the processing module is used to determine the resistance value in the electrical circuit based on the difference between the two voltage values, and judge whether the chain is cut or bridged based on the resistance value.

[0013] On the other hand, a control method for an electronic seal device is provided, which is applied to the electronic seal device described in the first aspect above. The control method includes:

[0014] After the processing module determines that the chain and the lock body are connected in place, it obtains the resistance value in the electrical circuit formed among the electronic lock, the lock body, and the chain;

[0015] When the difference between the resistance value and the preset resistance value threshold is greater than or equal to the preset value, an alarm signal that the chain is cut is output.

[0016] Further, obtaining the resistance value in the electrical circuit formed among the electronic lock, the lock body, and the chain includes: the voltage detection circuit obtains the voltage values at both ends of the electronic lock and transmits the two voltage values to the processing module; the processing module determines the resistance value in the electrical circuit based on the difference between the two voltage values.

[0017] Compared with the prior art, the electronic seal device and control method of the present invention have the following beneficial effects: A wire is buried in the chain, and a resistor is connected in the wire. When the electronic lock, the lock body, and the chain are in a normal connection state, an electrical circuit can be formed among the three, so that it is possible to determine whether the chain has been cut by detecting whether the resistance value in the electrical circuit is abnormal, and then give an alarm. Moreover, the chain includes a first sub-chain segment and a second sub-chain segment connected by a resistor. Even if the saboteur wires the two ends of the first sub-chain segment and the second sub-chain segment before cutting the chain, the resistance value in the electrical circuit will also change before and after cutting. That is to say, the act of the chain being damaged can also be quickly detected, thereby triggering the alarm function of the electronic seal device and achieving the purpose of preventing unlocking by wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the electronic seal device in an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the chain being cut in a wiring method;

[0020] Figure 3 is a schematic diagram of the chain being cut in another wiring method;

[0021] Figure 4 is a partial structural schematic diagram of the first sub-chain segment in an embodiment of the present invention.

[0022] In the drawings, each reference numeral represents: 1, electronic lock; 11, resistance value acquisition module; 12, power supply; 2, lock body; 21, ball; 22, elastic member; 3, chain; 31, first sub-chain segment; 311, first wire segment; 312, first protective layer; 32, second sub-chain segment; 321, second wire segment; 33, resistor; 34, rubber-coated part; 4, wire; 5, wiring segment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0026] In the related art, in order to avoid the situation where it is difficult to detect that the chain is maliciously cut, some solutions have emerged to form an electrical circuit between the chain and the electronic lock. However, in the face of these solutions, there are still some situations where the electronic lock is bypassed by connecting wires to both ends of the electronic lock before cutting the chain to avoid alarm. That is, before cutting the chain of the electronic lead seal, the destroyer can connect the two ends of the chain in some way to bypass or simulate the complete state of the chain; trying to deceive the electronic lead seal system into thinking that the chain is intact, thereby avoiding alarm. This increases the safety risk of the electronic lead seal and the protected object of the electronic lead seal. Based on the above defects of the related art, this embodiment provides an electronic lead seal device and a control method for the electronic lead seal device.

[0027] As Figures 1 to 4 shown, in this embodiment, the electronic lead seal device includes: an electronic lock 1, two lock bodies 2, and a chain 3; the chain 3 includes a first sub-chain segment 31, a second sub-chain segment 32, and a resistor 33 connected between the first sub-chain segment 31 and the second sub-chain segment 32. One end of the first sub-chain segment 31 away from the resistor 33 is used to connect to one of the lock bodies 2, and one end of the second sub-chain segment 32 away from the resistor 33 is used to connect to the other lock body 2; the two lock bodies 2 are respectively connected and conducted to both ends of the electronic lock 1 through wires 4; the electronic lock 1 is configured with a processing module (not shown in the figure) and a resistance value acquisition module 11. The resistance value acquisition module 11 is used to acquire the resistance value in the electrical circuit when an electrical circuit is formed among the electronic lock 1, the lock body 2, and the chain 3, and transmit the resistance value to the processing module; the processing module is used to judge whether the chain 3 is cut based on the resistance value.

[0028] Specifically, a wire is buried in the chain 3, and a resistor 33 is connected in the wire. When the electronic lock 1, the lock body 2, and the chain 3 are in a normal connection state, an electrical circuit can be formed among the three, so that it is possible to determine whether the chain 3 has been cut by detecting whether there is an abnormality in the resistance value in the electrical circuit. That is, if a saboteur cuts the chain 3, the resistance value in the electrical circuit will change, thereby triggering the alarm function of the electronic seal device. And even a saboteur will find it difficult to conceal the chain-cutting operation through wiring, such as Figure 2 and 3 As shown, no matter what method is used for wiring, as long as the branch where the chain 3 is located is disconnected (the chain 3 is cut), it can be detected. That is, when the wiring is completed and / or when the chain 3 is cut, it will cause a significant change in the resistance value of the entire electrical circuit, so that according to the change in the resistance value, the message that the chain 3 has been damaged can be accurately obtained, and an alarm signal can be sent to the user in time.

[0029] Furthermore, in this embodiment, the resistance value acquisition module 11 can be a voltage detection circuit. The voltage detection circuit is used to acquire the voltage values at both ends of the electronic lock 1 and transmit the two voltage values to the processing module; the processing module is used to determine the resistance value in the electrical circuit based on the difference between the two voltage values, and judge whether the chain 3 has been cut or wired based on the resistance value. Specifically, when the electronic lock 1, the lock body 2, and the chain 3 are in a normal connection state, an electrical circuit can be formed among the three, and a voltage difference is formed between both ends of the electronic lock 1, so that it is possible to judge whether the chain 3 has been cut based on the magnitude of the voltage difference at both ends of the electronic lock 1. That is, if a saboteur cuts the chain 3, the voltage difference at both ends of the electronic lock 1 will change, thereby triggering the alarm function of the electronic seal device.

[0030] It can be understood that in some other embodiments, the resistance value acquisition module 11 can also be a device structure such as a current detection circuit or an impedance measuring instrument, which is not limited here. That is, it is also possible to judge whether the electrical circuit has changed through a current detection circuit or an impedance measuring instrument, and then judge whether the chain 3 has been directly cut or whether a saboteur has cut the chain 3 after wiring at both ends of the electronic lock 1.

[0031] In this embodiment, the first sub-chain segment 31 includes a first wire segment 311 and a first protective layer 312 surrounding the outside of the first wire segment 311. The second sub-chain segment 32 includes a second wire segment 321 and a second protective layer surrounding the outside of the second wire segment 321. The resistor 33 is connected to the connection between the first wire segment 311 and the second wire segment 321. Through the design of the first protective layer 312 and the second protective layer, the safety of the wire can be improved, that is, the difficulty of cutting the first wire segment 311 and the second wire segment 321 can be increased.

[0032] In this embodiment, both the first protective layer 312 and the second protective layer are steel wire protective layers; both ends of the first wire segment 311 are also respectively connected and electrically conducted to the steel wires at both ends of the first protective layer 312, and both ends of the second wire segment 321 are also respectively connected and electrically conducted to the steel wires at both ends of the second protective layer. The steel wire rope has excellent properties of high strength, can resist physical damage, and prevent the chain 3 from being easily cut; moreover, the steel wire rope also has a very high tensile strength, so that when the entire chain 3 is subjected to a tensile force, the steel wire rope can effectively bear the external force, reduce the force on the wire, and prevent the wire from breaking due to stretching. The first wire segment 311 and the second wire segment 321 can be respectively welded to both ends of the resistor 33, and the connection stability and electrical conduction stability are good.

[0033] Further, in this embodiment, the chain 3 further includes a rubber coating portion 34, and the rubber coating portion 34 surrounds the outside of one end of the first sub-chain segment 31 close to the resistor 33, the outside of the resistor 33, and the outside of one end of the second sub-chain segment 32 close to the resistor 33. The setting of the rubber coating portion 34 can not only further improve the connection stability between the first sub-chain segment 31 and the resistor 33 and between the second sub-chain segment 32 and the resistor 33, but also insulate the exposed wire connection portion, and avoid the resistor 33 being affected by the external environment. Both the first wire segment 311 and the second wire segment 321 are provided with insulating layers. As Figure 4 shown, the wires are stripped at both ends of the steel wire rope to connect the wires to the steel wires, ensuring good electrical connection between the wires and the steel wires. Through such a direct connection, the resistance 33 of the connection point can be reduced, the signal transmission efficiency can be improved, and the reliability of the current can be ensured.

[0034] In this embodiment, the lock body 2 includes balls 21, elastic members 22, and a main body block provided with a receiving cavity; one end of the first sub-chain segment 31 far from the resistor 33 and one end of the second sub-chain segment 32 far from the resistor 33 are respectively used for plugging and assembling with the receiving cavity; an installation groove communicating with the receiving cavity is formed in the main body block, the size of the ball 21 is adapted to the shape of the installation groove, and the diameter of the ball 21 is smaller than the width of the receiving cavity. One end of the elastic member 22 is fixed to the bottom of the receiving groove; when the first sub-chain segment 31 is inserted into the receiving cavity, the ball 21 can be pre-pressed forward under the action of the elastic member 22, and the ball 21 abuts between the first sub-chain segment 31 and the free end of the elastic member 22; when the second sub-chain segment 32 is inserted into the receiving cavity, the ball 21 abuts between the second sub-chain segment 32 and the free end of the elastic member 22.

[0035] Specifically, the elastic member 22 can be a spring. The spring is used to push the ball 21 outwards (i.e., towards the receiving cavity). Thus, when the end of the chain 3 (i.e., the first sub-chain segment 31 or the second sub-chain segment 32) is inserted into the receiving cavity, the elastic force of the spring is converted into the abutting force of the ball 21 against the chain 3, so that the end of the chain 3 can be stably positioned in the receiving cavity, realizing the locking of the chain 3 and the lock body 2. The included angle between the elastic contraction direction of the elastic member 22 and the insertion direction of the first sub-chain segment 31 or the second sub-chain segment 32 is less than 90°; that is, the installation groove is an inclined groove. This inclined setting method of the installation groove is beneficial to reducing the volume and longitudinal width of the lock body 2.

[0036] In some embodiments of the present embodiment, the ball 21 is a conductor, and a contact switch connected to the wire 4 is further provided in the installation groove; when the first sub-chain segment 31 and the second sub-chain segment 32 are respectively inserted into the corresponding receiving cavities in place, the chain 3, the ball 21, and the wire 4 are electrically connected. Specifically, the ball 21 can be an iron ball. The ball 21 not only has the function of stabilizing the position of the chain 3 but also has the function of making the circuit conductive. That is, when the first sub-chain segment 31 and the second sub-chain segment 32 are respectively inserted into the corresponding receiving cavities in place, the iron ball contacts the contact switch, so that it can be judged whether the chain 3 and the lock body 2 are inserted in place according to the closed or open state of the electrical circuit.

[0037] In the present embodiment, the electronic seal device further includes a power supply 12 connected to the electrical circuit. The power supply 12 can be arranged inside the electronic lock 1 or outside the electronic lock 1, and is used to supply power to the electrical circuit formed among the electronic lock 1, the lock body 2, and the chain 3.

[0038] In the present embodiment, it further includes a position inspection module electrically connected to the processing module. The position inspection module is used to obtain the position information of the chain 3; the processing module is further used to judge whether the chain 3 is cut based on the position information, and / or whether the chain 3 and the lock body 2 are connected in place. The position inspection module can be an image acquisition device, etc. It can judge whether the chain 3 is cut and whether the chain 3 and the lock body 2 are connected in place through the position information of the chain 3, which is beneficial to further improving the security of the electronic seal device. It can be understood that in some other embodiments, data interaction between the position inspection module and the processing module can also be realized by means of wireless communication.

[0039] In the control method of the electronic seal device in the present embodiment, it is applied to the electronic seal device as described in the first aspect above. The control method includes:

[0040] Step S1: After the processing module determines that the chain 3 and the lock body 2 are connected in place, obtain the resistance value in the electrical circuit formed among the electronic lock 1, the lock body 2, and the chain 3;

[0041] Step S2: When the difference between the resistance value and the preset resistance threshold value is greater than or equal to the preset value, an alarm signal indicating that the chain 3 is cut is output.

[0042] In this embodiment, the resistance threshold value corresponds to the resistance value of the resistor 33 in the chain 3. A wire 4 is buried in the chain 3, and the resistor 33 is connected in the wire 4. When the electronic lock 1, the lock body 2, and the chain 3 are in a normal connection state, an electrical loop can be formed among the three, so that it is possible to determine whether the chain 3 is cut by detecting whether there is an abnormality in the resistance value in the electrical loop. That is, when the difference between the resistance value and the preset resistance threshold value is greater than or equal to the preset value, it indicates that the resistor 33 in the circuit has changed greatly, and the chain 3 may be damaged, and an alarm signal needs to be sent to remind the user.

[0043] In this embodiment, the step of obtaining the resistance value in the electrical loop formed among the electronic lock 1, the lock body 2, and the chain 3 includes: the voltage detection circuit obtains the voltage values at both ends of the electronic lock 1 and transmits the two voltage values to the processing module; the processing module determines the resistance value in the electrical loop based on the difference between the two voltage values.

[0044] Specifically, when the electronic lock 1, the lock body 2, and the chain 3 are in a normal connection state, an electrical loop can be formed among the three, and a voltage difference is formed between both ends of the electronic lock 1, so that it is possible to determine whether the chain 3 is cut based on the magnitude of the voltage difference at both ends of the electronic lock 1; that is, if the destroyer cuts the chain 3, the voltage difference at both ends of the electronic lock 1 will change, thereby triggering the alarm function of the electronic seal device.

[0045] In this embodiment, the processing module can be a processor built into the electronic lock 1, or a control device externally and wired or wirelessly connected to the tissue acquisition module of the electronic lock 1. The control device can be a terminal or a server, etc., which is not limited here.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electronic lead sealing device, characterized in that: include: An electronic lock, two lock bodies and a lock chain; the lock chain includes a first sub-segment, a second sub-segment and a resistor connected between the first sub-segment and the second sub-segment, an end of the first sub-segment away from the resistor is used to connect to one of the lock bodies, and an end of the second sub-segment away from the resistor is used to connect to the other lock body; the two lock bodies are respectively connected to the two ends of the electronic lock through wires; the electronic lock is equipped with a processing module and a resistance acquisition module, the resistance acquisition module is used to obtain the resistance value in the electrical circuit when the electronic lock, the lock body and the lock chain are connected to form an electrical circuit, and transmit the resistance value to the processing module; the processing module is used to determine whether the chain is cut based on the resistance value.

2. The electronic sealing device according to claim 1, characterized in that: The first sub-segment includes a first wire segment and a first protective layer surrounding the first wire segment, the second sub-segment includes a second wire segment and a second protective layer surrounding the second wire segment, and the resistor is connected between the first wire segment and the second wire segment.

3. The electronic sealing device according to claim 2, characterized in that: The first protective layer and the second protective layer are both steel wire protective layers; the two ends of the first wire segment are also connected and conducted with the steel wires at the two ends of the first protective layer, and the two ends of the second wire segment are also connected and conducted with the steel wires at the two ends of the second protective layer.

4. The electronic sealing device according to claim 1, characterized in that: It also includes a rubber-coated portion, which surrounds the outer side of the end of the first sub-segment close to the resistor, the outer side of the resistor, and the outer side of the end of the second sub-segment close to the resistor.

5. The electronic sealing device according to claim 1, characterized in that: The lock body includes a ball, an elastic member and a main block with a receiving cavity; one end of the first sub-segment away from the resistor and one end of the second sub-segment away from the resistor are respectively used for plugging and assembling with the receiving cavity; a mounting groove connected to the receiving cavity is provided in the main block, the size of the ball is adapted to the shape of the mounting groove, and the diameter of the ball is smaller than the width of the receiving cavity, and one end of the elastic member is fixed to the bottom of the receiving groove; when the first sub-segment is inserted into the receiving cavity, the ball abuts between the first sub-segment and the free end of the elastic member; when the second sub-segment is inserted into the receiving cavity, the ball abuts between the second sub-segment and the free end of the elastic member.

6. The electronic sealing device according to claim 5, characterized in that: The ball is a conductor, and a contact switch connected to the wire is also provided in the installation groove; when the first sub-segment and the second sub-segment are respectively plugged into the corresponding receiving cavity, the chain, the ball and the wire are conductive.

7. The electronic sealing device according to claim 5, characterized in that: An angle formed between the elastic contraction direction of the elastic member and the plugging direction of the first sub-segment or the second sub-segment is less than 90°.

8. The electronic sealing device according to claim 1, characterized in that: The resistance acquisition module is a voltage detection circuit, which is used to obtain the voltage values ​​at both ends of the electronic lock and transmit the two voltage values ​​to the processing module; the processing module is used to determine the resistance in the electrical circuit based on the difference between the two voltage values, and judge whether the chain is cut or connected based on the resistance.

9. A control method for an electronic lead sealing device, characterized in that: Applied to the electronic sealing device according to any one of claims 1 to 9, the control method comprises: After determining that the lock chain and the lock body are connected in place, the processing module obtains a resistance value in an electrical circuit formed between the electronic lock, the lock body and the lock chain; When the difference between the resistance value and a preset resistance threshold value is greater than or equal to a preset value, an alarm signal indicating that the chain is cut is output.

10. The control method of the electronic sealing device according to claim 9, characterized in that: The obtaining of the resistance value in the electrical circuit formed between the electronic lock, the lock body and the lock chain comprises: The voltage detection circuit obtains the voltage values ​​at both ends of the electronic lock and transmits the two voltage values ​​to the processing module; The processing module determines a resistance value in the electrical circuit based on a difference between two voltage values.

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