A connecting wire of an electronic lead seal, an electronic lead seal and a detection method

Abstract

The embodiment of the application provides a connecting wire of an electronic lead seal strip, the electronic lead seal strip and a detection method, which comprise an outer wire and an inner wire, the outer wire surrounds the outer surface of the inner wire, the inner wire comprises an outer insulating layer, an inner wire shielding layer, an inner insulating layer and an inner core, the first end of the inner core is connected with the first end of the inner wire shielding layer, the second end of the inner core is connected with the first end of a processing module, the first end of the outer wire is connected with the second end of the processing module, the second end of the inner wire shielding layer and the second end of the outer wire are respectively connected with the ground of the processing module, in this way, the connecting state of the connecting wire is detected by using the inner wire, the situation that the electronic lead seal strip is cut off by overlapping and cannot alarm can be avoided, meanwhile, the abnormal damage of the steel wire rope can be found in time by detecting the connectivity of the inner wire, and the durability and reliability of the electronic lead seal strip are greatly improved.

Description

Technical Field

[0001] This application relates to the field of testing technology, and more specifically, to a connecting wire for an electronic lead seal, an electronic lead seal, and a testing method. Background Technology

[0002] In the fields of logistics transportation and safety management, electronic lead seals are commonly used. These seals consist of a double-locking cylinder structure: one cylinder secures one end of a steel wire rope, while the other inserts and locks the rope in place. When the rope is not inserted into the other cylinder, the two cylinders are electrically disconnected. Once inserted, the rope becomes electrically connected due to its conductivity. If the rope is cut after insertion, the two cylinders return to a non-conductive state. By monitoring the electrical continuity of the two metal cylinders, it is possible to determine whether the rope has been inserted or cut. However, if the two cylinders are intentionally joined together externally with a conductor before the rope is cut, the cut will not be detected, and no alarm will be triggered. Summary of the Invention

[0003] The purpose of some embodiments of this application is to provide a connecting wire for an electronic lead seal, an electronic lead seal, and a detection method. Through the technical solution of the embodiments of this application, a connecting wire for an electronic lead seal is provided, including an outer wire and an inner wire. The outer wire surrounds the inner wire. The inner wire includes an outer insulation layer, an inner wire shielding layer, an inner insulation layer, and an inner core. The outer insulation layer, inner wire shielding layer, inner insulation layer, and inner core are arranged sequentially from the outside to the inside. The first end of the inner core is connected to the first end of the inner wire shielding layer, and the second end of the inner core is connected to the first end of a processing module. The outer wire... One end is connected to the second end of the processing module. The second end of the inner wire shielding layer and the second end of the outer wire are respectively connected to the ground of the processing module. In this way, by detecting the signals of the second end of the outer wire connected to the processing module and the second end of the inner core connected to the processing module, the continuity of the connection line can be judged. By using the inner wire to assist in detecting the connection status of the connection line, the situation where the electronic lead seal fails to alarm due to overlapping or cutting of the steel wire rope can be avoided. At the same time, by detecting the continuity of the inner wire, abnormal damage to the steel wire rope can be detected in time, which greatly improves the durability and reliability of the electronic lead seal.

[0004] In a first aspect, some embodiments of this application provide a connecting wire for an electronic lead seal. The connecting wire includes an outer wire and an inner wire. The outer wire surrounds the inner wire. The inner wire includes an outer insulating layer, an inner wire shielding layer, an inner insulating layer, and an inner core. The outer insulating layer, the inner wire shielding layer, the inner insulating layer, and the inner core are arranged sequentially from the outside to the inside. A first end of the inner core is connected to a first end of the inner wire shielding layer. A second end of the inner core is connected to a first end of a processing module. A first end of the outer wire is connected to a second end of the processing module. The second end of the inner wire shielding layer and the second end of the outer wire are respectively connected to the ground of the processing module.

[0005] Some embodiments of this application add an inner line inside the outer line, connecting the first end of the inner core to the first end of the inner line shielding layer and connecting it to the processing module. The outer line is also connected to the processing module. By detecting the signals at the second end of the outer line connected to the processing module and the second end of the inner core connected to the processing module, the continuity of the connection line is determined. By using the inner line to assist in detecting the connection status of the connection line, the situation where the electronic lead seal fails to alarm due to overlapping or cutting of the steel wire rope can be avoided. At the same time, by detecting the continuity of the inner line, abnormal damage to the steel wire rope can be detected in time, which greatly improves the durability and reliability of the electronic lead seal.

[0006] Optionally, the outer line is formed by twisting multiple steel wire ropes together or by fixing multiple steel wire ropes in parallel with the inner line. Some embodiments of this application involve wrapping multiple steel wire ropes around the outside of an inner wire by twisting them together, or fixing multiple steel wire ropes in parallel with the inner wire to form an outer wire, which is then wrapped around the outside of the inner wire. In this way, by adding an inner wire inside the outer wire, the connection wire of the electronic lead seal can be used to determine the breakage of the connection wire.

[0007] Optionally, the first end of the processing module is connected to the first power supply terminal via a first resistor. Some embodiments of this application provide a high level to the port of the first end by adding a pull-up resistor to the first end of the processing module.

[0008] Optionally, the second terminal of the processing module is connected to the second power supply terminal through a second resistor, and the second terminal of the processing module is also connected to ground through a latch.

[0009] In some embodiments of this application, a pull-up resistor is added to the second end of the processing module to provide a high level to the port of the second end, and a latch is connected to store the external line signal. Optionally, the first end of the inner core and the first end of the inner wire shielding layer are short-circuited together.

[0010] Secondly, some embodiments of this application provide an electronic lead seal, including the connecting wire of the electronic lead seal as described in the first aspect.

[0011] Some embodiments of this application provide an electronic lead seal, which includes a connecting line comprising an outer wire and an inner wire. An inner wire is added inside the outer wire, and the first end of the inner core is connected to the first end of the shielding layer of the inner wire and connected to a processing module. The outer wire is also connected to the processing module. The continuity of the connecting line is determined by detecting the signals at the second end of the outer wire connected to the processing module and the second end of the inner core connected to the processing module. By using the inner wire to assist in detecting the connection status of the connecting line, the electronic lead seal can avoid the situation where the steel wire rope is spliced ​​or cut, thus failing to trigger an alarm. At the same time, by detecting the continuity of the inner wire, abnormal damage to the steel wire rope can be detected in a timely manner, greatly improving the durability and reliability of the electronic lead seal.

[0012] Optionally, the electronic lead seal also includes a Bluetooth module, which is connected to a mobile device for displaying the connection status and alarm signals of the electronic lead seal.

[0013] Some embodiments of this application employ low-power Bluetooth chips, which can be wirelessly connected and configured via mobile devices, and utilize the uniqueness of Bluetooth MAC addresses to ensure device anti-counterfeiting and anti-tampering.

[0014] Optionally, the electronic lead seal also includes an alarm module, which is connected to the processing module and is used to display alarm signals.

[0015] In some embodiments of this application, if a connection error occurs first, an alarm is triggered by the alarm module, for example, by using audible and visual signals.

[0016] Thirdly, some embodiments of this application provide a method for detecting electronic lead seals, applied to electronic lead seals as described in any of the second aspects, the method comprising: The state of the first terminal of the internal line signal connected to the first terminal of the processing module and the state of the second terminal of the external line signal connected to the second terminal of the processing module are detected. Based on the state of the first end and the state of the second end, determine the disconnection status of the connecting line of the electronic lead seal, and issue an alarm based on the disconnection status.

[0017] Some embodiments of this application add an inner wire inside the outer wire of the connecting wire. In this way, the status of the inner and outer wires of the connecting wire can be monitored simultaneously. Even if the connecting wire is spliced, cut, or abnormally damaged, it can be detected and alarmed in time.

[0018] Optionally, determining the disconnection status of the electronic lead seal's connecting wire based on the first end status and the second end status, and issuing an alarm based on the disconnection status, includes: When the electronic lead seal is activated, the second terminal is detected to be at a low level; If the second terminal state is detected to change from low level to high level, it is determined that the connection line of the electronic lead seal is cut and a cut alarm signal is issued.

[0019] In some embodiments of this application, when the electronic lead seal is activated, the state of the second terminal is judged. If the state of the second terminal changes from low level to high level, it is determined that the connection line is cut and a cut alarm signal is issued.

[0020] Optionally, determining the disconnection status of the electronic lead seal's connecting wire based on the first end status and the second end status, and issuing an alarm based on the disconnection status, includes: When the connecting wire is inserted into the lock cylinder, the state of the second terminal is found to be low. If the state of the second terminal changes from low to high, the state of the first terminal is detected to be high, and it is determined that the connection line of the electronic lead seal is in an overlap-cut state, and an overlap-cut alarm signal is issued.

[0021] Some embodiments of this application determine the levels of the first terminal state and the second terminal state. If the first terminal state is detected to be high, it is determined that the connection line is in a splice-cut state, and a splice-cut alarm signal is issued.

[0022] Optionally, determining the disconnection status of the electronic lead seal's connecting wire based on the first end status and the second end status, and issuing an alarm based on the disconnection status, includes: The state of the first end is detected when the connecting wire is not inserted into the lock cylinder and the state of the second end is high. If the first terminal is at a high level, it is determined that the internal wiring of the electronic lead seal is abnormal, and an internal wiring abnormality alarm signal is issued.

[0023] In some embodiments of this application, if the MCU does not detect an external wire disconnection signal after the device is woken up, but detects an internal wire disconnection signal, and the wire rope was previously not inserted, it is assumed that the wire rope may be damaged. Therefore, an internal wire disconnection alarm signal will be issued immediately to facilitate the user to promptly detect any abnormalities in the device. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of some embodiments of this application, the accompanying drawings used in some embodiments of this application will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of a connecting line for an electronic lead seal provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the electronic lead seal provided in an embodiment of this application; Figure 3 This is a schematic diagram of the internal structure of the electronic lead seal provided in an embodiment of this application; Figure 4 This is a schematic diagram of the internal structure provided in an embodiment of this application; Figure 5 This is a longitudinal section diagram of the connecting line provided in an embodiment of this application; Figure 6 This is a schematic diagram of the detection structure for the connecting line provided in an embodiment of this application; Figure 7 This is a flowchart illustrating the connection line detection method provided in an embodiment of this application. Detailed Implementation

[0026] The technical solutions of some embodiments of this application will now be described with reference to the accompanying drawings.

[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] In the fields of logistics, transportation, and security management, physical lead seals are widely used due to their ease of installation and low cost. These seals have a very simple structure, typically consisting of a single unidirectional metal lock cylinder. Once the steel wire rope is inserted into the cylinder, it cannot be pulled out in the opposite direction; it only tightens with each pull. To untie it, the wire rope must be cut. Therefore, these seals are generally disposable. To prevent malicious cutting or replacement, manufacturers typically wrap the metal lock cylinder in plastic and spray the plastic casing with user-specified colors, text, or numbers as a unique identifier. However, these anti-counterfeiting measures are easily imitated, making them unreliable. Furthermore, even if the seal is cut during use, the user cannot immediately detect it; it can only be used as a means of post-incident investigation.

[0029] To address the drawbacks of physical lead seals being easily counterfeited, electronic lead seals with built-in RFID chips have emerged. Due to the uniqueness of the RFID chip, they can serve as a means of preventing counterfeiting and tampering to a certain extent. However, they can only be used as a means of post-event inspection and cannot immediately trigger an alarm when the seal is cut.

[0030] Currently, there is another type of electronic lead seal on the market. Utilizing IoT technology, it not only provides anti-counterfeiting and anti-tampering features like RFID electronic lead seals, but also proactively sends an alarm signal to the backend server via wireless communication after the steel cable is cut. This type of electronic lead seal incorporates a low-power Bluetooth chip, a lithium battery, and a CAT.1 communication module. It can not only immediately send an alarm signal to the backend server when the steel cable is cut, but also periodically send heartbeat signals to the backend server, thereby further improving equipment reliability and reducing maintenance workload.

[0031] The working principle of electronic lead seals is also very simple. They generally adopt a double-lock cylinder structure. One lock cylinder is used to fix one end of the steel wire rope, and the other lock cylinder is used to insert the steel wire rope and lock it. When the steel wire rope is not inserted into the other lock cylinder, the two lock cylinders are not electrically connected. Once the steel wire rope is inserted into the other lock cylinder, since the steel wire rope itself is conductive, the two lock cylinders are electrically connected. If the steel wire rope is cut after insertion, the two lock cylinders return to the state of not being electrically connected. In this way, by monitoring the electrical continuity of the two metal lock cylinders, it can be determined whether the steel wire rope has been inserted or cut.

[0032] Although this electronic lead seal can actively report the relevant status when the wire rope is inserted or cut, it is not without its vulnerabilities. If someone deliberately laps the wire rope together on the outside using a conductor, and then cuts the wire rope, the equipment will not be able to detect the wire rope being cut and will not be able to sound an alarm.

[0033] In view of this, some embodiments of this application provide a connecting wire for an electronic lead seal, which includes an outer wire 10 and an inner wire 20. The outer wire 10 surrounds the inner wire 20. The inner wire 20 includes an outer insulation layer 201, an inner wire shielding layer 202, an inner insulation layer 203, and an inner core 204. The outer insulation layer 201, the inner wire shielding layer 202, the inner insulation layer 203, and the inner core 204 are arranged sequentially from the outside to the inside. The first end of the inner core 204 is connected to the first end of the inner wire shielding layer 202, and the second end of the inner core 204 is connected to the first end of the processing module 30. The outer wire 10... The first end of the 0 is connected to the second end of the processing module 30. The second end of the inner shielding layer 202 and the second end of the outer core 10 are respectively connected to the ground of the processing module 30. In this way, by detecting the signals of the second end of the outer core connected to the processing module and the second end of the inner core connected to the processing module, the continuity of the connection line can be judged. By using the inner core to assist in detecting the connection status of the connection line, the situation where the electronic lead seal fails to alarm due to overlapping or cutting of the steel wire rope can be avoided. At the same time, by detecting the continuity of the inner core, abnormal damage to the steel wire rope can be detected in time, which greatly improves the durability and reliability of the electronic lead seal.

[0034] like Figure 1 and Figure 4 As shown, an embodiment of this application provides a connecting wire for an electronic lead seal. The connecting wire includes an outer wire 10 and an inner wire 20. The outer wire 10 surrounds the inner wire 20. The inner wire 20 includes an outer insulating layer 201, an inner wire shielding layer 202, an inner insulating layer 203, and an inner core 204. The outer insulating layer 201, the inner wire shielding layer 202, the inner insulating layer 203, and the inner core 204 are arranged sequentially from the outside to the inside. The first end of the inner core 204 is connected to the first end of the inner wire shielding layer 202. The second end of the inner core 204 is connected to the first end of a processing module 30. The first end of the outer wire 10 is connected to the second end of the processing module 30. The second end of the inner wire shielding layer 202 and the second end of the outer wire 10 are respectively connected to the ground of the processing module 30.

[0035] The processing module 30 is the MCU on the main control board inside the electronic lead seal, which can be a single-chip microcomputer, etc. The inner and outer insulation layers are used to prevent interference between external and internal signals, and the inner shielding layer 202 is a metal shielding mesh.

[0036] In the embodiments of this application, "connection" refers to direct soldering to a circuit board or soldering with wires.

[0037] In this embodiment, one end of the connecting wire directly short-circuits the inner wire shielding layer and the inner core together, while the other end connects one end of the inner core and one end of the inner wire shielding layer to the two signal input terminals of the processing module respectively. When the connecting wire is not cut, the inner wire shielding layer and the inner core are always in a short-circuit state, i.e., a low level. Once the steel wire rope is cut, the inner wire shielding layer and the inner core are in a disconnected state, changing from a low level to a high level. Even if the external steel wire rope is illegally spliced, the inner wire is in a disconnected state, which can effectively prevent splicing and cutting.

[0038] Some embodiments of this application add an inner line inside the outer line, connecting the first end of the inner core to the first end of the inner line shielding layer and connecting it to the processing module. The outer line is also connected to the processing module. By detecting the signals at the second end of the outer line connected to the processing module and the second end of the inner core connected to the processing module, the continuity of the connection line is determined. By using the inner line to assist in detecting the connection status of the connection line, the situation where the electronic lead seal fails to alarm due to overlapping or cutting of the steel wire rope can be avoided. At the same time, by detecting the continuity of the inner line, abnormal damage to the steel wire rope can be detected in time, which greatly improves the durability and reliability of the electronic lead seal.

[0039] Another embodiment of this application further explains the connection line of the electronic lead seal provided in the above embodiments.

[0040] like Figure 2 The diagram shown is a schematic representation of an electronic lead seal provided in an embodiment of this application. The internal structure of the electronic lead seal is as follows: Figure 3 As shown, it includes: a main control board, a lithium battery, a lock cylinder, an internal circuit detection module, an external circuit detection module, a waterproof switch, and an FPC antenna. The main control board is equipped with an MCU (microcontroller unit) processing module, which can be a single-chip microcomputer or a DSP chip. The electronic lead seal provided in this embodiment adopts a miniaturized and low-power design, with a standby current as low as tens of microamps. With a 300mAh lithium battery, the standby time can reach more than half a year. It also supports magnetic charging and rope replacement functions, and the waterproof rating can reach IP65. It can be used in various daily scenarios, such as logistics transportation, equipment maintenance, and inventory management. After the inserted steel wire rope is cut, it can be replaced with a new steel wire rope and reused, reducing the user's operating costs. The low-power design extends the standby time, and the support for charging and rope replacement allows for repeated use, further reducing the user's operating costs.

[0041] Furthermore, such as Figure 5As shown, the electronic lead seal provided in this embodiment includes a connecting line, which includes an outer wire (i.e., an outer steel wire rope), an inner shield wire, and an inner core wire. The inner wire and the outer wire are respectively connected to the processing module on the main control board. The first end of the inner core wire and the first end of the inner shield wire are short-circuited and connected. The stainless steel capillary tube is sleeved on the outside. The other end of the inner wire (inner wire signal 1) is connected to the processing module. The other end of the inner shield wire (inner wire signal 2) is connected to the processing module. The outer wire (i.e., the outer wire signal) is connected to the processing module. The outer wire is formed by twisting multiple steel wire ropes together or by fixing multiple steel wire ropes in parallel with the inner wire. In other words, in this embodiment of the application, multiple steel wire ropes are twisted together to form an outer line, which surrounds the outer side of the inner line. For example, 26 steel wire ropes can be twisted together to form a cylinder, and the inner line can be inserted inside the cylinder. Alternatively, multiple steel wire ropes can be fixed in parallel and parallel to the inner line to form a cylinder, and the inner line can be inserted inside the cylinder.

[0042] Some embodiments of this application involve wrapping multiple steel wire ropes around the outside of an inner wire by twisting them together, or fixing multiple steel wire ropes in parallel with the inner wire to form an outer wire, which is then wrapped around the outside of the inner wire. In this way, by adding an inner wire inside the outer wire, the connection wire of the electronic lead seal can be used to determine the breakage of the connection wire.

[0043] Based on the electronic lead seal, this application provides a connecting wire with an internally wrapped conductor (inner wire) containing a shield and an insulation layer. One end of the conductor's inner core and shield are directly connected to two signal input points on the circuit board, while the other end's inner core and shield are directly connected together and protected by a metal sleeve. This allows the system to detect external damage, such as cutting the steel wire, by checking the continuity of the internal conductor, preventing unauthorized exploitation of vulnerabilities in the IoT electronic lead seal and further improving its reliability.

[0044] like Figure 6 As shown, the first terminal of the processing module is connected to the first power supply terminal VCC through the first resistor R1, and the second terminal of the processing module is connected to the second power supply terminal VCC through the second resistor R2. The second terminal of the processing module is also connected to ground through a latch.

[0045] The latch can be made of various latch chips, such as RS latches.

[0046] The internal signal 1 is connected to the first terminal on the processing module, the internal signal 2 is connected to the ground on the processing module, and the external signal is connected to the second terminal on the processing module. It is also connected to the ground through a latch. Some embodiments of this application add a pull-up resistor to the first end of the processing module to provide a high level to the port of the first end, add a pull-up resistor to the second end of the processing module to provide a high level to the port of the second end, and connect a latch for storing external line signals. Specifically, such as Figure 6 As shown, in this embodiment, one end of the inner wire in the connecting line is short-circuited, and the other end, inner wire signal 1, is pulled up to VCC on the main control board and connected to the MCU input on the main control board. Inner wire signal 2 is connected to ground (GND) on the main control board. Under normal circumstances, the inner wire signal is always at a low level. Once the steel wire is cut, inner wire signal 1 will become high and trigger an MCU input interrupt. Similarly, the outer wire of the steel wire, i.e., the steel wire itself, is pulled up to VCC at one end through a resistor and connected to the MCU input on the main control board. The latch is also connected to GND on the main control board through a lead. Thus, if the steel wire is not inserted into the latch, the outer wire signal of the steel wire is always at a high level. Once the steel wire is inserted into the latch, the outer wire signal of the steel wire will become low. Ideally, once the steel wire is cut, the outer wire signal of the steel wire can immediately return to a high level.

[0047] In summary, with dual internal and external detection, the occurrence of abnormal situations such as overlapping and cutting can be avoided to the greatest extent, thereby further improving the reliability of electronic lead seals.

[0048] It should be noted that each of the implementable methods in this embodiment can be implemented individually or in any combination without conflict. This application does not limit this.

[0049] Some embodiments of this application provide an electronic lead seal, including the connecting wire of the electronic lead seal described above.

[0050] Some embodiments of this application provide an electronic lead seal, which includes a connecting line comprising an outer wire and an inner wire. An inner wire is added inside the outer wire, and the first end of the inner core is connected to the first end of the shielding layer of the inner wire and connected to a processing module. The outer wire is also connected to the processing module. The continuity of the connecting line is determined by detecting the signals at the second end of the outer wire connected to the processing module and the second end of the inner core connected to the processing module. By using the inner wire to assist in detecting the connection status of the connecting line, the electronic lead seal can avoid the situation where the steel wire rope is spliced ​​or cut, thus failing to trigger an alarm. At the same time, by detecting the continuity of the inner wire, abnormal damage to the steel wire rope can be detected in a timely manner, greatly improving the durability and reliability of the electronic lead seal.

[0051] Optionally, the electronic lead seal also includes a Bluetooth module, which is connected to a mobile device for displaying the connection status and alarm signals of the electronic lead seal.

[0052] Some embodiments of this application employ low-power Bluetooth chips, which can be wirelessly connected and configured via mobile devices, and utilize the uniqueness of Bluetooth MAC addresses to ensure device anti-counterfeiting and anti-tampering.

[0053] Optionally, the electronic lead seal also includes an alarm module, which is connected to the processing module and is used to display alarm signals.

[0054] In some embodiments of this application, if a connection error occurs first, an alarm is triggered by the alarm module, for example, by using audible and visual signals.

[0055] Another embodiment of this application provides a method for detecting electronic lead seals, used to execute the connection line of the electronic lead seals provided in the above embodiments.

[0056] like Figure 4 The diagram shown is a structural schematic of the detection method for electronic lead seals provided in an embodiment of this application. This detection method for electronic lead seals is applied to the electronic lead seals described above, and the method includes: The state of the first terminal of the internal line signal connected to the first terminal of the processing module and the state of the second terminal of the external line signal connected to the second terminal of the processing module are detected. Based on the state of the first end and the state of the second end, determine the disconnection status of the connecting line of the electronic lead seal, and issue an alarm based on the disconnection status.

[0057] Specifically, the electronic lead seal is generally in a dormant state and will be awakened under various interruption conditions, such as timed heartbeat, insertion or cutting of steel wire rope, Bluetooth connection, charging, etc. Once the MCU in the electronic lead seal is awakened, it detects the state of the second end of the external signal connected to the processing module, that is, whether the second end is at a high level, and then determines whether the external signal has changed. Then it detects the state of the first end of the internal signal connected to the processing module. By judging the states of the first end and the second end, the disconnection state of the electronic lead seal's connecting line is determined, and an alarm is triggered based on the disconnection state. By adding an internal line inside the external line of the connecting line, the states of the internal and external lines of the connecting line can be monitored simultaneously. Even if there is a splicing, cutting, or abnormal damage to the connecting line, it can be detected and alarmed in time.

[0058] like Figure 7 As shown in the embodiment of this application, a method for detecting electronic lead seals is provided, including: S1. If the device detects that the external line has been cut after it is woken up, and the wire rope was previously inserted, it will immediately issue a cut alarm signal. S2. If the device does not detect that the external line has been cut after it is woken up, but detects that the internal line has been cut, and the wire rope was previously inserted, then an overlap cut alarm signal will be issued immediately. S3. If the device detects that the internal line has been cut after it is woken up, and the steel wire rope was not inserted before, it will immediately issue an internal line disconnection alarm signal. S4. The device returns to sleep mode.

[0059] Optionally, determining the disconnection status of the electronic lead seal's connecting wire based on the first end status and the second end status, and issuing an alarm based on the disconnection status, includes: When the electronic lead seal is activated, the second terminal is detected to be at a low level; If the second terminal state is detected to change from low level to high level, it is determined that the connection line of the electronic lead seal is cut and a cut alarm signal is issued.

[0060] In step S1, in order to extend the standby time of the electronic lead seal, the processing module MCU of the main control board on the electronic lead seal is in a low-power sleep mode most of the time. At this time, the operating current of the electronic lead seal can be as low as tens of microamps. The MCU in sleep mode can be woken up by various interrupts, including: timed heartbeat, wire rope insertion or cutting, Bluetooth connection, charging, etc. Once the MCU is woken up, it detects that the second terminal state is low, that is, the connecting wire is inserted into the lock cylinder. If it detects that the second terminal state changes from low level to high level, it determines that the external wire of the connecting wire is disconnected and assumes that the wire rope has been cut. It will immediately issue a cutting alarm signal.

[0061] In some embodiments of this application, when the electronic lead seal is activated, the state of the second terminal is judged. If the state of the second terminal changes from low level to high level, it is determined that the connection line is cut and a cut alarm signal is issued.

[0062] Optionally, determining the disconnection status of the electronic lead seal's connecting wire based on the first end status and the second end status, and issuing an alarm based on the disconnection status, includes: When the connecting wire is inserted into the lock cylinder, the state of the second terminal is found to be low. If the state of the second terminal changes from low to high, the state of the first terminal is detected to be high, and it is determined that the connection line of the electronic lead seal is in an overlap-cut state, and an overlap-cut alarm signal is issued.

[0063] In step S2, if the electronic lead seal is activated and the second end is detected to be at a low level, meaning the wire rope is in the inserted state, the processing module MCU detects that the second end state changes from low to high level and the first end state is high level, meaning no external wire disconnection signal is detected, but an internal wire disconnection signal (first end state) is detected. Therefore, it is considered that the wire rope has a splice and shearing situation, and a splice and shearing alarm signal will be issued immediately.

[0064] Some embodiments of this application determine the levels of the first terminal state and the second terminal state. If the first terminal state is detected to be high, it is determined that the connection line is in a splice-cut state, and a splice-cut alarm signal is issued.

[0065] Optionally, determining the disconnection status of the electronic lead seal's connecting wire based on the first end status and the second end status, and issuing an alarm based on the disconnection status, includes: The state of the first end is detected when the connecting wire is not inserted into the lock cylinder and the state of the second end is high. If the first terminal is at a high level, it is determined that the internal wiring of the electronic lead seal is abnormal, and an internal wiring abnormality alarm signal is issued.

[0066] In step S3, after the electronic lead seal is activated, the MCU detects that the second terminal signal is high, that is, the connecting wire is not inserted into the lock cylinder. If the MCU does not detect the external wire disconnection signal of the connecting wire, but detects that the first terminal signal is high, that is, the internal wire disconnection signal of the connecting wire, it assumes that the internal wire of the connecting wire may be damaged. Therefore, it will immediately issue an internal wire disconnection alarm signal to help the user detect abnormalities in the equipment in a timely manner.

[0067] In some embodiments of this application, if the MCU does not detect an external wire disconnection signal after the device is woken up, but detects an internal wire disconnection signal, and the wire rope was previously not inserted, it is assumed that the wire rope may be damaged. Therefore, an internal wire disconnection alarm signal will be issued immediately to facilitate the user to promptly detect any abnormalities in the device.

[0068] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0069] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0070] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A connecting wire for an electronic lead seal, characterized in that, The connecting wire includes an outer wire and an inner wire. The outer wire surrounds the inner wire. The inner wire includes an outer insulation layer, an inner wire shielding layer, an inner insulation layer, and an inner core. The outer insulation layer, inner wire shielding layer, inner insulation layer, and inner core are arranged sequentially from the outside to the inside. The first end of the inner core is connected to the first end of the inner wire shielding layer, and the second end of the inner core is connected to the first end of the processing module. The first end of the outer wire is connected to the second end of the processing module, and the second end of the inner wire shielding layer and the second end of the outer wire are respectively connected to the ground of the processing module.

2. The connecting wire for the electronic lead seal according to claim 1, characterized in that, The outer line is formed by twisting multiple steel wire ropes together or by fixing multiple steel wire ropes in parallel with the inner line.

3. The connecting wire for the electronic lead seal according to claim 1, characterized in that, The first end of the processing module is connected to the first power supply end through a first resistor.

4. The connecting wire for the electronic lead seal according to claim 1, characterized in that, The second terminal of the processing module is connected to the second power supply terminal through a second resistor, and the second terminal of the processing module is also connected to ground through a latch.

5. The connecting wire for the electronic lead seal according to claim 1, characterized in that, The first end of the inner core and the first end of the inner wire shielding layer are short-circuited together.

6. An electronic lead seal, characterized in that, Includes the connecting wire of the electronic lead seal as described in any one of claims 1-5.

7. The electronic lead seal according to claim 6, characterized in that, The electronic lead seal also includes a Bluetooth module, which is connected to a mobile device for displaying the connection status and alarm signals of the electronic lead seal.

8. The electronic lead seal according to claim 6, characterized in that, The electronic lead seal also includes an alarm module, which is connected to the processing module and is used to display alarm signals.

9. A method for detecting electronic lead seals, characterized in that, Applied to the electronic lead seal as described in any one of claims 6-8, the method comprises: The state of the first terminal of the internal line signal connected to the first terminal of the processing module and the state of the second terminal of the external line signal connected to the second terminal of the processing module are detected. Based on the state of the first end and the state of the second end, determine the disconnection status of the connecting line of the electronic lead seal, and issue an alarm based on the disconnection status.

10. The detection method for electronic lead seals according to claim 9, characterized in that, The step of determining the disconnection status of the electronic lead seal's connecting wire based on the first end status and the second end status, and issuing an alarm based on the disconnection status, includes: When the electronic lead seal is activated, the second terminal is detected to be at a low level; If the second terminal state is detected to change from low level to high level, it is determined that the connection line of the electronic lead seal is cut and a cut alarm signal is issued.

11. The detection method for electronic lead seals according to claim 9, characterized in that, The step of determining the disconnection status of the electronic lead seal's connecting wire based on the first end status and the second end status, and issuing an alarm based on the disconnection status, includes: When the connecting wire is inserted into the lock cylinder, the state of the second terminal is found to be low. If the state of the second terminal changes from low to high, the state of the first terminal is detected to be high, and it is determined that the connection line of the electronic lead seal is in an overlap-cut state, and an overlap-cut alarm signal is issued.

12. The detection method for electronic lead seals according to claim 9, characterized in that, The step of determining the disconnection status of the electronic lead seal's connecting wire based on the first end status and the second end status, and issuing an alarm based on the disconnection status, includes: The state of the first end is detected when the connecting wire is not inserted into the lock cylinder and the state of the second end is high. If the first terminal is at a high level, it is determined that the internal wiring of the electronic lead seal is abnormal, and an internal wiring abnormality alarm signal is issued.

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