Steel wire lock rope and rope lock

Abstract

The steel wire lock rope comprises an inner core wire and a steel wire rope outside the inner core wire, one end of the inner core wire is fixedly connected with one end of the steel wire rope in an insulating mode and then extends to the outside of the steel wire rope, and the other end of the inner core wire is fixedly connected with the other end of the steel wire rope in an insulating mode. The inner core wire in the steel wire rope is suspended in the steel wire rope and is not communicated with the steel wire rope; the wire inner core is arranged in the steel wire rope, the inner core wire does not need to rotate, and only the end, inside the steel wire lock rope, of the inner core wire needs to be sealed and does not have short circuit with the outer sleeve of the steel wire lock rope. Manufacturing is convenient, and the manufacturing cost is relatively low. The defects that a back-and-forth steel wire lock rope needs to be formed in a steel wire lock rope at present, the machining difficulty of the steel wire lock rope is large, the steel wire lock rope is thickened, and the manufacturing cost of the steel wire lock rope is increased are overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rope locks, in particular to a steel wire rope lock and a rope lock. BACKGROUND

[0002] With the development of electronic technology, intelligent electronic locks have become more and more popular. The advantages of electronic locks are obviously higher than those of traditional pure mechanical locks, but in the aspect of padlocks, the lock rope detection alarm function of electronic locks is slightly insufficient. Many electronic padlocks do not have the alarm function of lock rope cutting and damage. The traditional lock rope mode of steel beam, iron chain, steel wire rope sleeve and the like is still used to complete the locking of the lock body, and the lock rope detection alarm function is not provided. The existing lock rope detection function of some electronic padlocks is not satisfactory in detection sensitivity, and there are more security vulnerabilities. There are defects that human beings can easily avoid detection and alarm, and there are safety hazards. CONTENT OF THE INVENTION

[0003] In order to overcome the above-mentioned defects of the prior art, the main purpose of the present application is to provide a steel wire rope lock and a rope lock which can prevent theft.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a steel wire rope lock, comprising an inner core wire and a steel wire rope outside the inner core wire, one end of the inner core wire is fixedly connected with one end of the steel wire rope and extends to the outside of the steel wire rope, the other end of the inner core wire is fixedly connected with the other end of the steel wire rope, and the inner core wire inside the steel wire rope is suspended in the steel wire rope and does not conduct with the steel wire rope.

[0005] A rope lock comprises the steel wire rope.

[0006] Preferably, the lock body is further provided with a detection circuit, the outer extending inner core wire of the steel wire rope is connected with a CVCC signal end of the detection circuit, and the steel wire rope end of the outer extending inner core wire is connected with a PGND signal end of the detection circuit; a self-locking structure arranged in the lock body is connected with a PVCC signal end of the detection circuit, when the lock is locked, the other end of the steel wire rope is connected with the self-locking structure in the lock body, and the end of the steel wire rope is connected with the PVCC signal end of the detection circuit; the PVCC signal end and the PGND signal end of the detection circuit are connected;

[0007] The single-chip microcomputer arranged in the lock body 1 is connected with a DXCGQ end and a DXCGQ_1 end of the detection circuit.

[0008] Preferably, the detection circuit comprises a first resistor R1, a third resistor R3, a second resistor R2 and a P_MOS tube Q1; one end of the first resistor R1, one end of the third resistor R3, one end of the second resistor R2 and the source of the P_MOS tube Q1 are connected with a power supply interface;

[0009] The other end of the first resistor R1 is connected with the positive electrode of a first diode D1, and the negative electrode of the first diode D1 is connected with one end of a second capacitor C2, the negative electrode of a voltage stabilizing diode D3, the gate of an N_MOS tube Q2 and a PVCC signal end respectively;

[0010] The other end of the one end of the third resistor R3 is connected with the drain of the N_MOS tube Q2 and a DXCGQ end respectively;

[0011] The other end of the second capacitor C2 and the negative electrode of the voltage stabilizing diode D3 are connected with a PGND signal end, and the source of the N_MOS tube Q2 is connected with a GND end;

[0012] The other end of the second resistor R2 is connected with the positive electrode of a second diode D2, and the negative electrode of the second diode D2 is connected with the gate of the P_MOS tube Q1, a CVCC signal end and a first capacitor C1;

[0013] The drain of the P_MOS tube Q1 is connected with a DXCGQ_1 end;

[0014] The drain of the P_MOS tube Q1 and the first capacitor C1 are connected with a PGND end.

[0015] Preferably, a fuse F1 is connected between the second capacitor C2 and the source of the N_MOS tube Q2.

[0016] Preferably, the drain of the P_MOS tube Q1 is connected with the PGND end through a fourth resistor R4.

[0017] Preferably, a first metal block and a second metal block are arranged in the lock body, the first metal block is connected with the PGND end of the detection circuit, the second metal block is arranged in a self-locking device in the lock body, and the second metal block is connected with the PVCC signal end of the detection circuit; the fixed end of the steel wire lock rope is fixedly connected with the first metal block after penetrating through the first metal block, and the inner core wire extending out of the fixed end of the steel wire lock rope is connected with the CVCC signal end; the movable end of the steel wire lock rope is connected with the second metal block after being inserted into the self-locking device, and the movable end of the steel wire lock rope is connected with the PVCC signal end.

[0018] Preferably, the first metal block, the second metal block and the inner core wire are made of conductive material.

[0019] Preferably, it also includes an I / O level detection port, which is electrically connected to the microcontroller, wherein the two ports of the I / O level detection port are respectively connected to the DXCGQ terminal and the DXCGQ_1 terminal of the detection circuit.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] This design incorporates an inner conductor core within the wire rope. The core conductor does not need to rotate; it simply needs to be sealed at its end inside the wire rope to prevent short circuits with the outer sheath. This method is easy to manufacture and relatively inexpensive. It overcomes the current shortcomings of wire rope systems that require a loop, which increases manufacturing difficulty, leads to thicker wire ropes, and consequently, higher production costs.

[0022] The detection circuit and microcontroller are connected by an inner core wire embedded in the locking rope during locking. The microcontroller monitors the level signal of the detection circuit in real time. When the level signal detected by the microcontroller changes, it indicates that the locking rope has been damaged. At this time, the microcontroller controls the alarm device to issue an alarm, which solves the current defect that there is no way to accurately detect the damage to the locking rope. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a rope lock according to an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the locking rope structure in an embodiment of the present invention;

[0025] Figure 3 This is a circuit diagram of the detection circuit in an embodiment of the present invention;

[0026] Figure 4 This is an interface diagram of the power supply unit in an embodiment of this utility model;

[0027] Figure 5 This is a diagram of the microcontroller interface in an embodiment of this utility model;

[0028] Figure 6 This is a diagram of the locking rope interface in an embodiment of this utility model. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Example 1:

[0031] like Figure 2As shown, this embodiment provides a steel wire lock rope 2, including an inner core conductor 3 and a steel wire rope 200 including the inner core conductor 3. One end of the inner core conductor 3 is insulated and fixedly connected to one end of the steel wire rope 200 and extends to the outside of the steel wire rope 200. The other end of the inner core conductor 3 is insulated and fixedly connected to the other end of the steel wire rope 200. The inner core conductor 3 inside the steel wire rope 200 is suspended in the steel wire rope 200 and is not conductive with the steel wire rope 200. When the steel wire rope 200 is braided, one inner core conductor 3 is braided into the inside of the steel wire rope 200, and the middle part of the inner core conductor 3 is suspended. The inner core conductor 3 is located inside the wire rope 200 and is not conductive to it. Its two ends are located at both ends of the wire rope 200 and are insulated and fixed to them. Specifically, the inner core conductor 3 is fixed to both ends of the wire rope 200 using insulating rubber. This method does not require the inner core conductor to rotate; it only requires sealing the end of the inner core conductor inside the wire rope to prevent short circuits with the outer sheath. After weaving, the inner core conductor 3 is located in the middle of the wire rope. It is easy to manufacture and relatively inexpensive. This solves the current problem of increased manufacturing costs due to the need for a loop in the wire rope 2, which makes wire rope processing difficult and results in thicker wire ropes.

[0032] like Figure 1 As shown, a locking rope is provided, including a steel wire locking rope 2, a lock body 1, and a detection circuit and a microcontroller disposed within the lock body 1. The inner core wire 3 of the fixed end 201 of the steel wire locking rope 2 extends to the outside of the steel wire locking rope 2 and connects to the CVCC signal terminal in the detection circuit within the lock body 1. The fixed end 201 of the steel wire locking rope is also connected to the grounding terminal of the detection circuit within the lock body 1, i.e., connected to the PGND terminal in the detection circuit. When the movable end 202 of the steel wire locking rope 2 is inserted into the lock body 1, it is fixedly connected to a self-locking device within the lock body (the self-locking device is a conventional locking device within the lock body, which will not be described in detail here). The movable end of the steel wire locking rope 2 is connected to the PVCC signal terminal in the detection circuit within the lock body 1. Specifically, as... Figure 6 As shown, a first metal block 4 and a second metal block 5 are provided inside the lock body 1. Both the first metal block 4 and the second metal block 5 are made of metals with good conductivity, such as copper, gold, or silver. In this embodiment, a copper metal block is used. The first metal block 4 is fixedly installed inside the lock body 1. The first metal block 4 is connected to the PGND terminal of the detection circuit inside the lock body 1. The fixed end 201 of the steel wire lock rope 2 passes through the first metal block 4 and is fixedly connected to the first metal block 4 to achieve the purpose of connecting the steel wire lock rope 2 to the PGND terminal. At the same time, the inner core wire 3 of the fixed end of the steel wire lock rope 2 extends outward and is connected to the CVCC signal terminal of the detection circuit.

[0033] The second metal block 5 is fixedly installed inside the self-locking device of the lock body 1. The second metal block 5 is connected to the PVCC signal terminal of the detection circuit. When locking, the movable end 202 of the steel wire lock rope 2 is inserted into the second metal block 5 for locking, and at the same time, the steel wire lock rope 2 is connected to the PVCC signal terminal of the detection circuit. Specifically, a steel wire lock rope port is set on the lock body 1, which is a welding interface for the lead wire of the steel wire lock rope 2. In this way, the detection signal can be added to the steel wire lock rope. Pin 1 of terminal H3 is connected to the network signal PVCC, pin 2 of terminal H3 is connected to the network signal CVCC, and pin 3 of terminal H3 is connected to the network signal PGND.

[0034] It also includes a microcontroller whose input terminal is connected to the DXCGQ terminal and DXCGQ_1 terminal of the detection circuit, respectively. When the steel wire lock rope is cut, the inner core wire is disconnected, the PVCC signal terminal is disconnected from the ground terminal, the microcontroller detects the change in the level of the detection circuit and issues a wire break alarm; when the steel wire lock rope is damaged, the suspended inner core wire is connected to the middle of the steel wire lock rope, the CVCC signal terminal of the detection circuit is short-circuited with the steel wire lock rope, and the microcontroller issues an alarm that the steel wire lock rope has been damaged based on the change in the detection circuit.

[0035] Specifically, as follows Figure 5 The microcontroller shown includes an I / O level detection port, connected to the external I / O pins of the microcontroller (MCU). The external pins of the MCU detect changes in the analog input voltage level to generate a trigger signal. For example, rising edge triggering and falling edge triggering serve as the initial trigger signal. Pin 1 of terminal H2 is connected to the network signal DXCGQ, and pin 2 of terminal H2 is connected to the network signal DXCGQ_1. Specifically, DXCGQ is the outer core detection signal, and DXCGQ_1 is the inner core detection signal. This embodiment uses the MCU's I / O port to detect high and low voltage levels, thus determining whether the steel wire rope has been damaged. It eliminates the need to specify a functional ADC port, saving microcontroller resources and improving versatility.

[0036] The DXCGQ interface (first network interface) and DXCGQ interface (second network interface) of the I / O level detection port are connected to the detection circuit. The microcontroller collects the level signal of the detection circuit through the two network interfaces. Since the inner core wire in the steel wire lock rope is connected to the detection circuit, any damage to the inner core wire will indicate a change in the level of the entire detection circuit. When the microcontroller detects a change in the level signal in the detection circuit, it indicates that the steel wire lock rope has been damaged. At this time, the microcontroller controls the alarm device to sound an alarm. In this embodiment, the alarm device can be a sound and light alarm preset in the lock body or a remote alarm. The remote alarm includes an alarm module set in the running software for alarm reminder.

[0037] In one embodiment, such asFigure 3 As shown, the detection circuit includes a first resistor R1, a third resistor R3, a second resistor R2, and a P-MOS transistor Q1; one end of the first resistor R1, one end of the third resistor R3, one end of the second resistor R2, and the source of the P-MOS transistor Q1 are connected to a power supply interface; in this embodiment, the power supply interface is connected to... Figure 4 The power supply port shown is the interface for the input power supply of the entire schematic; pin 1 of terminal H1 is connected to the power network VCC_3.3V; pin 2 of terminal H1 is connected to GND.

[0038] The other end of the first resistor R1 is connected to the anode of the first diode D1. The cathode of the first diode D1 is connected to one end of the second capacitor C2, the cathode of the Zener diode D3, the gate of the N-MOS transistor Q2, and the PVCC signal terminal, respectively. The anode of the Zener diode D3 is connected to the PGND terminal, the other end of the second capacitor C2 is connected to the PGND terminal, one end of the fuse F1 is connected to the PGND terminal, and the other end of the fuse F1 is connected to the GND terminal. The fuse is located between the source and the N-MOS transistor Q2 of the second capacitor C2. The other end of one end of the third resistor R3 is connected to the drain and the DXCGQ terminal of the N-MOS transistor Q2, respectively.

[0039] The other end of the second resistor R2 is connected to the positive terminal of the second diode D2. The negative terminal of the second diode D2 is connected to the gate of the P_MOS transistor Q1, the CVCC signal terminal, and the first capacitor C1. The drain of the P_MOS transistor Q1 is connected to the DXCHQ_1 terminal. The other end of the fourth resistor R4 is connected to PGND, and the other end of the first capacitor C1 is connected to PGND. In the specific connection, the fixed end of the steel wire lock rope is connected to the PGND terminal, the inner core wire extending outward from the fixed end is connected to the CVCC signal terminal, the movable end of the steel wire lock rope is connected to the PVCC signal terminal, and the two input ports of the microcontroller are connected to the DXCGQ terminal and the DXCHQ_1 terminal, respectively.

[0040] In this embodiment, by incorporating N-type and P-type MOSFETs, the lock achieves low power consumption during prolonged standby when locked. Simultaneously, the first capacitor C1 and the second capacitor C2 provide excellent filtering. Adjusting their capacitance values ​​adjusts the sensitivity of the circuit detection. Even if the steel wire rope is quickly cut using large hydraulic pliers, it will still trigger the internal core wires of the steel wire rope to form a closed circuit, thus achieving the purpose of triggering the steel wire rope alarm.

[0041] In practical applications, it needs to be used in conjunction with a microcontroller chip, which serves as the core logic processing chip. If the microcontroller is powered by 3.3V, then the entire power supply port is powered by 3.3V. If it is powered by 5V, then the entire power supply port is powered by 5V. It is highly versatile and does not have specific requirements regarding the microcontroller model. The network signal pins DXCGQ and DXCGQ_1 can be connected to two independent I / O ports of the microcontroller, using analog level sampling to acquire rising or falling edges. This allows for the detection and verification of triggered signals.

[0042] In the circuit, the function of the resettable fuse F1 is to prevent large currents from flowing into the lock body from the external steel wire rope, thus protecting the stability of the lock body. Therefore, the current limiting value of F1 should be as small as possible; a 50mA overcurrent protection fuse is selected in the schematic diagram.

[0043] The pull-up circuit consisting of the first resistor R1 and the first diode D1 serves two purposes: firstly, to prevent short-circuit current when the PVCC network signal is locked to the PGND network signal; and secondly, to prevent malicious voltage application from flowing back into the lock body through the external steel wire rope. Therefore, the diode is essential.

[0044] The third resistor, R3, prevents a short circuit to ground from the power supply VCC_3.3V when the N_MOS transistor Q2 is turned on. Secondly, it provides a pull-up resistor to raise the DXCGQ network to a high level when the N_MOS transistor Q2 is turned off.

[0045] The functions of the second capacitor C2 and the first capacitor C1 are twofold: firstly, to provide filtering and prevent circuit voltage fluctuations; secondly, these two capacitors, in conjunction with the first resistor R1 and the first diode D1, and the second resistor R2 and the second diode D2 respectively, can control the charging and discharging rates, ensuring that the trigger waveform has clear and complete rising and falling edges. This prevents the waveform speed from changing too quickly and exceeding the microcontroller's detection response time.

[0046] The overvoltage protection diode D3 is also to protect the lock from damage caused by applying a large voltage to the steel wire rope.

[0047] An N-MOS transistor is used at position Q2 because the lock aims for low power consumption; therefore, when normally locked, the N-MOS transistor at position Q2 is turned on, reducing current discharge to ground. A P-MOS transistor is used at position Q1, also to reduce power consumption, as the P-MOS transistor at position Q1 is normally turned off, further reducing current discharge to ground.

[0048] The resistance values ​​of the first resistor R1 and the second resistor R2 can be adjusted according to the length of the wire rope. Specifically, the longer the wire rope, the smaller the resistance value. This compensates for the resistance of the wire rope. Because it is a simulated level control triggering method, it is not an absolute fixed value. After proper adjustment, it should conform to the level detection range of the microcontroller. For example, the detection level threshold for a 3.3V powered microcontroller is around 2.8V.

[0049] In this embodiment, because a positive detection core wire is added inside the steel wire lock rope, even if the two ends of the lock's steel wire lock rope are shorted by human intervention and then the steel wire lock rope is cut, the alarm of the inner core steel wire lock rope detection will still be triggered. At the same time, because the inner core is positive, in actual use testing, as long as the conductor of the inner core cable is touched by human intervention, the voltage level on the inner core cable may fluctuate. However, because the outer steel wire is a ground wire, this design has strong anti-interference capabilities in terms of electromagnetic interference.

[0050] A method for detecting and alarming the breakage of a steel wire rope, comprising:

[0051] When the lock is in the unlocked state;

[0052] The movable end of the steel wire locking rope disengages from the contact of the second metal block, and the PVCC signal terminal is no longer connected to the PGND terminal through the inner core wire. Due to the pull-up effect of the first resistor R1 and the first diode D1, the level signal of the PVCC signal terminal is high at this time. N_MOS transistor Q2 is now conducting, meaning its source and drain are connected. The network signal at the DXCGQ terminal is pulled low to ground, and the microcontroller I / O port connected to this signal detects a low level. Due to the pull-up effect of the second resistor R2 and the second diode D2, the gate of the P_MOS transistor Q1 is not conducting, and its source and drain are not connected. Due to the presence of the pull-down fourth resistor R4, the network signal at the DXCGQ_1 terminal detects a low level at this time.

[0053] When the lock is in the locked state;

[0054] The movable end of the steel wire rope contacts the second metal block. The PVCC signal terminal is connected to the PGND terminal through the inner core wire. This is equivalent to grounding the signal at the PVCC signal terminal. Due to the presence of the first resistor R1 and the first diode D1, the circuit VCC_3.3V is not directly short-circuited to ground. At this time, the level signal at the PVCC signal terminal is low. The N_MOS transistor Q2 is off at this time, that is, the source and drain of the N_MOS transistor Q2 are not conducting. The network signal at the DXCGQ terminal is pulled high by the third resistor R3, and the detection level of the microcontroller I / O port connected to this signal is high. The situation of the P_MOS transistor Q1 remains unchanged, and the network signal state at the DXCGQ_1 terminal does not change.

[0055] When the steel wire rope of the lock is damaged while the lock is in the locked state.

[0056] If the steel wire rope breaks at any point in the middle, the network signal at the PVCC signal terminal will no longer be connected to the network signal at the PGND terminal through the inner core wire of the steel wire rope. Due to the pull-up effect of the first resistor R1 and the first diode D1, the level signal at the PVCC signal terminal will change from low to high. The N_MOS transistor Q2 will then change from non-conducting to conducting, meaning its source and drain will become conductive. The network signal at the DXCGQ terminal will change from high to low. When the microcontroller I / O port connected to this signal detects the level change, it will trigger a steel wire rope breakage alarm. Due to the pull-up effect of the second resistor R2 and the second diode D2, the gate of the P_MOS transistor Q1 will not conduct at its source and drain. However, when the steel wire rope is damaged, at the instant the inner core wire is cut, the network signal at the CVCC signal terminal will briefly short-circuit with the PGND signal on the steel wire. The gate of the P_MOS transistor Q1 will have a low-level signal, and the source and drain of P_MOS transistor Q1 will conduct, causing the network signal at the DXCGQ_1 terminal to be pulled up. At this time, the microcontroller I / O port connected to this signal will detect this change in level from low to high and then from high to low. This level change signal will trigger the microcontroller to wake up and send the corresponding alarm information, thus completing the detection and alarm function for the steel wire rope.

[0057] When the wire rope is unlocked, it is connected to the PGND network signal, which is at a low level and lacks a high electromotive force. When locked, although it connects to the PVCC signal, it is at a low level. Therefore, the wire rope remains at a low level, without a high electromotive force or voltage difference. Consequently, the voltage level on the wire rope cannot be detected. This greatly reduces the possibility of artificially identifying the voltage level and deliberately simulating voltage distortion.

[0058] The above embodiments are merely illustrative examples of the present utility model and do not constitute a limitation on the protection scope of the present utility model. All designs that are the same as or similar to the present utility model are within the protection scope of the present utility model.

Claims

1. A steel wire lock rope, characterized in that, It includes an inner core conductor and a steel wire rope outside the inner core conductor. One end of the inner core conductor is insulated and fixedly connected to one end of the steel wire rope and extends to the outside of the steel wire rope. The other end of the inner core conductor is insulated and fixedly connected to the other end of the steel wire rope. The inner core conductor inside the steel wire rope is suspended in the steel wire rope and is not connected to the steel wire rope.

2. A rope lock, characterized in that, It includes at least the wire rope as described in claim 1.

3. A rope lock according to claim 2, characterized in that, It also includes a lock body, a detection circuit inside the lock body, and the inner core wire extending outward from the steel wire lock rope is connected to the CVCC signal terminal of the detection circuit, and the end of the steel wire lock rope extending outward from the inner core wire is connected to the PGND signal terminal of the detection circuit; the self-locking structure inside the lock body is connected to the PVCC signal terminal of the detection circuit; when locked, after the other end of the steel wire lock rope is connected to the self-locking structure inside the lock body, the end of the steel wire lock rope is connected to the PVCC signal terminal of the detection circuit; the PVCC signal terminal in the detection circuit is connected to the PGND signal terminal; It also includes a microcontroller installed inside the lock body, whose input terminals are connected to the DXCGQ terminal and the DXCGQ_1 terminal of the detection circuit, respectively.

4. A rope lock according to claim 3, characterized in that, The detection circuit includes a first resistor R1, a third resistor R3, a second resistor R2, and a P-MOS transistor Q1; one end of the first resistor R1, one end of the third resistor R3, one end of the second resistor R2, and the source of the P-MOS transistor Q1 are connected to the power supply interface. The other end of the first resistor R1 is connected to the positive terminal of the first diode D1, and the negative terminal of the first diode D1 is connected to one end of the second capacitor C2, the negative terminal of the Zener diode D3, the gate of the N-MOS transistor Q2, and the PVCC signal terminal, respectively. The other end of the third resistor R3 is connected to the drain of N-MOS transistor Q2 and the DXCGQ terminal, respectively. The other end of the second capacitor C2 and the negative terminal of the Zener diode D3 are connected to the PGND signal terminal, and the source of the N-MOS transistor Q2 is connected to the GND terminal. The other end of the second resistor R2 is connected to the positive terminal of the second diode D2, and the negative terminal of the second diode D2 is connected to the gate of the P_MOS transistor Q1, the CVCC signal terminal, and the first capacitor C1. The drain of P_MOS transistor Q1 is connected to the DXCGQ_1 terminal; The drain of P_MOS transistor Q1 and the first capacitor C1 are connected to the PGND terminal.

5. A rope lock according to claim 4, characterized in that, A fuse F1 is connected between the second capacitor C2 and the source of the N-MOS transistor Q2.

6. A rope lock according to claim 4, characterized in that, The drain of the P_MOS transistor Q1 is connected to the PGND terminal through the fourth resistor R4.

7. A rope lock according to claim 4, characterized in that, The lock body is provided with a first metal block and a second metal block. The first metal block is connected to the PGND terminal of the detection circuit. The second metal block is located in the self-locking device inside the lock body and is connected to the PVCC signal terminal of the detection circuit. The fixed end of the steel wire lock rope passes through the first metal block and is fixedly connected to the first metal block, and is connected to the PGND terminal. The inner core wire extending outside the fixed end of the steel wire lock rope is connected to the CVCC signal terminal. After the movable end of the steel wire lock rope is inserted into the self-locking device and connected to the second metal block, the movable end of the steel wire lock rope is connected to the PVCC signal terminal.

8. A rope lock according to claim 7, characterized in that, The first metal block, the second metal block, and the inner core wire are made of conductive material.

9. A rope lock according to claim 4, characterized in that, It also includes an I / O level detection port, which is electrically connected to the microcontroller. The two ports of the I / O level detection port are connected to the DXCGQ terminal and the DXCGQ_1 terminal of the detection circuit, respectively.

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