Reusable intelligent electronic sealing lock control system

Abstract

The utility model relates to a reusable intelligent electronic sealing lock control system which comprises a microprocessor, a lock rope breakage detection unit, a lock body vibration detection unit, a power supply unit and a communication unit. The lock rope breakage detection unit is in communication connection with the microprocessor, and the lock rope breakage detection unit is used for detecting whether a lock rope of the electronic sealing lock is broken or not and sending a detected signal to the microprocessor; the lock body vibration detection unit is in communication connection with the microprocessor, and the lock body vibration detection unit is used for detecting whether a lock body of the electronic sealing lock vibrates or not and sending a detected signal to the microprocessor; the microprocessor is in communication connection with the far-end alarm unit through the communication unit; the power supply unit supplies power to the microprocessor, the lock rope breakage detection unit and the lock body vibration detection unit; the safety guarantee of the sealing lock is effectively improved, and the problem that the lock is damaged violently is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of locks and tamper-evident locks, and in particular to a reusable intelligent electronic lock and tamper-evident lock control system. Background Art

[0002] Traditional locks mostly use physical seals and disposable steel wire ropes to seal areas or items. Opening requires breaking the wire rope, which is a one-time, irreversible process. Furthermore, they fail to issue timely alarms in the event of unauthorized access. Another option is active electronic locks, which are powered by rechargeable batteries, utilize 2G / 3G / 4G communication systems, and feature a reusable sealing mechanism. These reusable locks offer real-time detection and lock break alarms, but they consume high power, are bulky, require frequent charging, and are complex, with the rope length not adjustable.

[0003] To address these technical issues, the two most commonly used lock systems currently include traditional locks, which are single-use, cannot detect the lock's sealing status in real time, and cannot provide a lock break alarm. This makes them unsuitable for unattended locations. Active electronic locks are rechargeable, but their communication and repetitive opening and closing functions consume large amounts of power, resulting in high costs. Long standby times require large batteries. Furthermore, cloud-based data communication for opening and closing the lock introduces uncertainties, making it impossible to determine the lock's status. This makes them unsuitable for long-term monitoring and security control. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a reusable intelligent electronic lock control system that can promptly alarm when the lock is damaged.

[0005] To achieve the above-mentioned object, the present utility model adopts the following technical solution: a reusable intelligent electronic lock control system, comprising a microprocessor, a lock rope breakage detection unit, a lock body vibration detection unit, a power supply unit and a communication unit;

[0006] The lock rope breakage detection unit is in communication with the microprocessor and is used to detect whether the lock rope of the electronic lock is broken and send a detected signal to the microprocessor;

[0007] The lock body vibration detection unit is in communication with the microprocessor and is used to detect whether the lock body of the electronic lock is vibrating and send the detected signal to the microprocessor;

[0008] The microprocessor is connected to the remote alarm unit through the communication unit. When the microprocessor receives a signal that the lock rope of the electronic lock is broken or the lock body of the electronic lock is vibrating, it controls the remote alarm unit to sound an alarm.

[0009] The power supply unit supplies power to the microprocessor, the lock rope breakage detection unit and the lock body vibration detection unit.

[0010] Preferably, it also includes a temperature alarm unit, which is communicatively connected to the microprocessor. The temperature alarm unit is used to detect the temperature of the electronic lock, and when the detected temperature value is greater than a set threshold, it issues an alarm and sends the detected information to the microprocessor.

[0011] Preferably, it also includes a Bluetooth communication unit, a motor drive unit, and a motor limit feedback unit;

[0012] The microprocessor is respectively connected to the Bluetooth communication unit, the motor drive unit and the motor limit feedback unit for communication;

[0013] The microprocessor is wirelessly connected to the remote control APP through a Bluetooth communication unit. After receiving the locking or unlocking command issued by the remote control APP, the microprocessor controls the motor drive unit to lock and unlock the electronic safety lock; the motor limit feedback unit is used to receive whether the safety lock reaches the specified position when locking and unlocking, and sends the detected signal to the microprocessor.

[0014] Preferably, the device further comprises a touch unit, which is communicatively connected to the microprocessor.

[0015] Preferably, it further includes an indicator light, which is connected to the power supply unit and the microprocessor respectively.

[0016] Preferably, the power supply unit includes a battery, a charging protection unit, a charging management unit and a power detection unit; the charging protection unit, the charging management unit and the battery are electrically connected in sequence, and the power detection unit is communicatively connected to the microprocessor for detecting battery power information and sending the detected information to the microprocessor.

[0017] Preferably, it also includes a step-up / step-down unit, which is connected to the battery to step up or step down the battery. After stepping up or stepping down the battery, it provides power for the microprocessor, the communication unit, and the Bluetooth communication unit.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The lock rope breakage detection unit and the lock body vibration detection unit are used to detect whether the lock is damaged, and the detection results are sent to the microprocessor, which sends the alarm to the remote alarm unit, effectively improving the security of the lock and avoiding the problem of violent destruction of the lock. At the same time, the motor drive unit can lock or close the lock according to the instructions, and the motor limit feedback unit can detect whether the lock is locked or closed, so as to achieve the purpose of automatic locking and unlocking. At the same time, the temperature inside the lock body can be detected by the temperature alarm unit, and an alarm will be generated when the temperature is too high, avoiding the situation where the lock is damaged due to the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the reusable intelligent electronic lock control system in the utility model;

[0021] Figure 2 This is a circuit diagram of a charging protection unit in an embodiment of the present utility model;

[0022] Figure 3 This is a circuit diagram of a charging management unit in an embodiment of the present utility model;

[0023] Figure 4 This is a circuit diagram of the power detection unit in an embodiment of the present utility model;

[0024] Figure 5 This is a circuit diagram of a buck-boost unit in an embodiment of the present utility model;

[0025] Figure 6 This is a circuit diagram of a temperature alarm unit in an embodiment of the present utility model;

[0026] Figure 7 This is a circuit diagram of a communication unit in an embodiment of the present utility model;

[0027] Figure 8 This is a circuit diagram of a lock rope breakage detection unit in an embodiment of the present utility model;

[0028] Figure 9 This is a circuit diagram of the lock body vibration detection unit in an embodiment of the present utility model;

[0029] Figure 10 This is a circuit diagram of the Bluetooth MCU module in the embodiment of the present utility model;

[0030] Figure 11 This is a circuit diagram of the indicator light in the embodiment of the utility model;

[0031] Figure 12 This is a circuit diagram of a touch unit in an embodiment of the present utility model;

[0032] Figure 13 This is a circuit diagram of a motor limit feedback unit in an embodiment of the present utility model;

[0033] Figure 14 This is a circuit diagram of a motor drive unit in an embodiment of the present utility model; DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0035] Example 1:

[0036] like Figure 1 As shown, this embodiment provides a reusable intelligent electronic lock control system, including a microprocessor, a lock rope breakage detection unit, a lock body vibration detection unit, a power supply unit and a communication unit;

[0037] The lock rope breakage detection unit is in communication with the microprocessor and is used to detect whether the lock rope of the electronic lock is broken and send a detected signal to the microprocessor;

[0038] The lock body vibration detection unit is in communication with the microprocessor and is used to detect whether the lock body of the electronic lock is vibrating and send the detected signal to the microprocessor;

[0039] Specifically, when the lock rope breakage detection unit or the lock body vibration detection unit detects that the lock rope of the lock is broken or the lock body is vibrating during operation, the lock rope breakage detection unit or the lock body vibration detection unit sends a signal to the microprocessor after receiving the signal. When the microprocessor receives the information that the lock rope is broken or the lock body is vibrating, it indicates that the lock is being violently damaged. At this time, the microprocessor sends an alarm to the remote alarm unit through the communication unit, and can also trigger the alarm unit of the lock to issue an alarm warning;

[0040] In one embodiment, the lock rope breakage detection unit is mainly used to detect when the lock rope is damaged and cut, and can send a level change signal to the microprocessor (MCU) to feedback whether the lock rope is fully connected. At the same time, since this part is exposed to the outside, corresponding protection is also added. Figure 8The diode D1 shown is to prevent external high-level input from affecting the internal power supply. The self-recovery fuse F1 is to prevent large external current from being injected. The voltage-stabilizing diode D2 prevents static electricity accumulation from damaging or falsely triggering the detection part after the lock is unlocked. In actual application, the two ends of the lock rope wire rope are connected to the PGND and PVCC networks through screw holes respectively. Because the wire rope is conductive, the PVCC and PGND networks are connected when the lock is closed. At this time, the N-MOS tube Q1 does not work and the DXCGQ network signal is high. When the lock rope is cut, the PVCC and PGND networks are disconnected. At this time, the N-MOS tube Q1 works and is turned on, causing the DXCGQ network signal to be pulled down to a low level. The high and low level changes of this DXCGQ network signal correspond to the status of the lock rope. In this way, the MCU chip can obtain the status information of the lock rope by identifying and detecting the DXCGQ network signal;

[0041] Specifically, Figure 8 The VCC_3.3V network signal provided by the power supply unit is input to the lock rope break detection section. The VCC_3.3V network signal is connected to one end of resistor R14 and one end of resistor R15. The other end of resistor R14 is connected to the anode of diode D1. The cathode of diode D1 is connected to the cathode of Zener diode D2, one end of capacitor C21, pin 1 of MOSFET Q1, and network signal PVCC. The anode of Zener diode D2 is connected to the PGND network, the other end of capacitor C21, one end of resettable fuse F1, and the other end of resettable fuse F1 is grounded. The other end of resistor R15 is connected to the DXCGQ signal network and pin 3 of MOSFET Q1. The output of the DXCGQ signal network is connected to the MCU, and pin 2 of MOSFET Q1 is grounded.

[0042] The lock cord for the lock is a steel wire. One end is fixed and connected to the PGND signal. The other end is a movable end that can be inserted to close and removed to open. When inserted, the other end of the lock cord touches the PVCC, forming a closed circuit. When removed, the lock cord only connects to the PGND signal. The steel wire lock cord acts as a single conductor. The fixed and movable ends cannot be connected to the input signal in reverse. Because the steel wire is an exposed conductor, contact with the PVCC by hand can cause false triggering and voltage fluctuations.

[0043] In one embodiment, a lock body vibration detection unit is connected to a microprocessor (hereinafter referred to as MCU) via I2 communication. The lock body vibration detection unit is a lock body vibration sensor, which is mainly used to monitor the lock body and provide an alarm sensor component that triggers a preset alarm acceleration value when the lock body is collided. That is, when the lock body is violently damaged, the acceleration sensor of this part will vibrate due to external force. When the preset value is reached, the vibration sensor module will send an interrupt level signal. This level signal is connected to the MCU, so that the vibration signal generated when the lock body is violently unlocked can be detected; Figure 9 The VCC_3.3V network signal provided by the power supply unit is input to the lock body vibration sensor detection part. In this embodiment, the lock body vibration sensor uses the SC7A20TR model acceleration sensor of Silan Microelectronics. The circuit usage adopts the IIC communication method recommended by the manual. The MCU is connected to the first interrupt port of this acceleration chip for transmitting the vibration-triggered level signal.

[0044] The VCC_3.3V network signal is connected to one end of resistor R10, one end of resistor R9, one end of capacitor C19, one end of capacitor C20, pin 3 of accelerometer chip U4, pin 7 of accelerometer chip U4, pin 10 of accelerometer chip U4, and pin 11 of accelerometer chip U4. The other end of resistor R10 is connected to pin 2 of accelerometer chip U4. The other end of resistor R9 is connected to pin 12 of accelerometer chip U4. The other end of capacitor C19 is grounded. The other end of capacitor C20 is grounded. Pin 1 of accelerometer chip U4 is grounded. Pin 4 of accelerometer chip U4 is grounded. Pin 5 of accelerometer chip U4 is output to the MCU as the INT1 signal. Pin 9 of accelerometer chip U4 is grounded. Pin 8 of accelerometer chip U4 is grounded. Pin 2 of accelerometer chip U4 is connected to the MCU as the SDA network signal. Pin 12 of the accelerometer chip U4 is connected to the MCU part via the SCL network signal.

[0045] In one embodiment, the power supply unit includes a battery, a charging protection unit, a charging management unit and a power detection unit; the charging protection unit, the charging management unit and the battery are electrically connected in sequence, and the power detection unit is communicatively connected to the microprocessor for detecting battery power information and sending the detected information to the microprocessor.

[0046] In this embodiment, the battery uses a finished lithium battery with a nominal voltage of 3.8V (3.7V is universal), a capacity of 1500mA, and product model: 103040. The rechargeable battery provides a stable power source for the product during operation, and the storage energy allows the device to operate without external power supply. The installation location is the H5 terminal position in the battery charging management schematic diagram;

[0047] When the battery is charging, it needs to be protected by a charging protection unit. In one embodiment, since the charging port is an exposed physical charging port, it is necessary to provide overcurrent protection, overvoltage protection, short circuit protection, and anti-reverse connection protection to prevent the lock from being damaged by intentional external power supply from this port. The charging power source of the rechargeable battery comes from this external power supply.

[0048] Specific as Figure 2 Middle terminal H3 is the electromagnetic charging connector. It receives a 5V external power supply. The positive input is pin 1 of terminal H3, and the negative input is pin 2 of terminal H3. Pin 1 of terminal H3 is connected to one end of resettable fuse F2. The other end of resettable fuse F2 is connected to the cathode of anti-static diode D7, one end of varistor RV1, the cathode of diode D5, one end of resistor R27, the E terminal of PNP transistor Q3, one end of resistor R37, and the S terminal of MOS transistor U10. The positive terminal of anti-static diode D7 is grounded, as is the other end of varistor RV1. The positive terminal of diode D5 is grounded. Pin 2 of terminal H3 is grounded. The other end of resistor R27 is connected to one end of resistor R35 and the cathode of Zener diode D6. The anode of Zener diode D6 is grounded. The other end of resistor R35 is connected to the B terminal of PNP transistor Q3. The C terminal of the PNP transistor Q3 is connected to the other end of the resistor R37, the G terminal of the MOS transistor U10, and one end of the resistor R36. The other end of the resistor R36 is grounded. The D terminal of the MOS transistor U10 is output through the VCC_IN_5V signal network.

[0049] In one embodiment, in order to prevent the rechargeable lithium battery from overcurrent, undervoltage, short circuit and abnormal power supply voltage during charging, it is necessary to protect it during the charging process. The charging management unit used in this embodiment is the (Nanjing Tuowei) TP5000X-4.2 charging management chip, which is only used to manage the charging and discharging of the battery and display the charging and fully charged status at the same time. Figure 3 As shown in Figure 1, the VCC_IN_5V signal network sent by the charging protection part is connected to the battery charging management part.

[0050] Connect the positive terminal of capacitor C33 to pin 8 of the charging management chip U7. The negative terminal of capacitor C33 is grounded. Pin 1 of the charging management chip U7 is connected to one end of inductor L5 and the negative terminal of diode D4. The positive terminal of diode D4 is grounded. The other end of inductor L5 is connected to one end of resistor RS1, pin 3 of the charging management chip U7, and one end of capacitor C43. The other end of capacitor C43 is grounded. The other end of resistor RS1 is connected to one end of capacitor C44, pin 4 of the charging management chip U7, and pin 1 of the H5 terminal, which outputs the BAT+ network signal. The other end of capacitor C44 is grounded. Pins 2, 5, and 9 of the charging management chip U7 are grounded. Pin 2 of the H5 terminal is grounded. Pin 6 of the charging management chip U7 is connected to the STDBY signal network and is extended to the three-color indicator light section. Pin 7 of the charging management chip U7 is connected to the CHRG signal network and is extended to the three-color indicator light section. H5 is the battery input interface terminal.

[0051] When charging the battery, it is necessary to monitor the battery charge in real time. If the battery stops charging after charging is completed, in one embodiment, the power detection unit sends the detected power value to the MCU, which determines the power level and prompts the user to charge the battery, thereby issuing a low power alarm to prompt the user to charge, so as to avoid the situation where the device is out of power and cannot monitor the work. Figure 4 As shown, the BAT+ network signal output by the battery charge management section is input into the battery charge detection section; the input BAT+ network signal is connected to one end of resistor R28, the other end of resistor R28 is connected to one end of capacitor C59, one end of R30, and pin 3 of op amp U13. The other end of capacitor C59 is grounded, the other end of resistor R30 is grounded, and pin 2 of op amp U13 is grounded. Pin 4 of op amp U13 is connected to pin 1 of op amp U13 and one end of capacitor C48 via the OUT network signal, outputting the POWER_ADC network signal to the MCU section. Pin 5 of op amp U13 is connected to one end of capacitor C60 and the VCC_3.3V network signal. The other end of capacitor C48 is grounded, and the other end of capacitor C60 is grounded.

[0052] When a battery powers the units in the system, it provides voltages ranging from a full-charge voltage of 4.2V to a low-charge voltage of 2.75V. The entire system requires a stable supply voltage of 4V or 3.3V. Therefore, the actual battery voltage needs to be converted to a stable voltage. This embodiment achieves this voltage conversion through a buck-boost unit. This unit is connected to the battery and steps up or down the battery voltage, ensuring that the converted voltage remains stable and preventing excessive fluctuations that could damage other units in the system. The buck-boost unit in this embodiment uses the Texas Instruments TPS61230DRCR chip to stabilize the battery voltage above 4V. 4V is the most stable and reasonable voltage. First, when the battery outputs a voltage above 4V, it can power the subsequent NB module. Alternatively, an LDO step-down power supply can be connected after the 4V power supply, waiting for a 3.3V power supply to power the MCU and other devices. This buck-boost design minimizes losses and can output a stable 3.3V even with a 3.6V-4.5V power supply, meeting the 3.0V-3.6V power supply requirements of the MCU.

[0053] The buck-boost unit in this embodiment is as follows: Figure 5 The BAT+ network signal of the battery charging management part is input to the buck-boost power supply part. The network signal BAT+ is connected to one end of the fuse F3. The other end of the fuse F3 is connected to the resistor R24, the negative electrode of the Zener diode D8, and the negative electrode of the Zener diode D9. The positive electrode of the Zener diode D8 is grounded. The positive pole of the voltage regulator diode D9 is grounded, the other end of the resistor R24 ​​is connected to one end of the capacitor C34, one end of the capacitor C35, one end of the capacitor C36, one end of the capacitor C37, the 9th pin of the power management chip U6, the 10th pin of the power management chip U6, and one end of the inductor L4, the other end of the capacitor C34 is grounded, the other end of the capacitor C35 is grounded, the other end of the capacitor C36 is grounded, the other end of the capacitor C37 is grounded, the other end of the inductor L4 is connected to the 1st pin of the power management chip U6 and the 2nd pin of the power management chip U6, the 8th pin of the power management chip U6 is left floating, the 11th pin of the power management chip U6 is grounded, the 7th pin of the power management chip U6 is connected to the output FB1 network signal, the FB1 network signal is connected to one end of the resistor R21 and one end of the resistor R22; the other end of the resistor R21 is grounded, and the other end of the resistor R22 is connected to the VCC_4V network signal. The VCC_4V network signal is connected to pin 3 of power management chip U6, pin 4 of power management chip U6, one end of capacitor C40, one end of capacitor C41, one end of capacitor C39, the positive electrode of capacitor C38, one end of resistor R19, and one end of resistor R20. The other end of capacitor C40 is grounded. The other end of capacitor C41 is grounded. The other end of capacitor C39 is grounded, the negative electrode of capacitor C38 is grounded, and the other end of resistor R19 is connected to the VDD_4V network signal output.

[0054] The VDD_4V network signal is connected to pin 2 of the SW3 switch, pin 1 of the SW3 switch is connected to one end of capacitor C46 and pin 3 of the LDO power chip U8, the other end of capacitor C46 is grounded, pin 1 of the LDO power chip U8 is grounded, pin 2 of the LDO power chip U8 is connected to one end of capacitor C47 to output the VCC_3.3V network signal, the other end of capacitor C47 is grounded, one end of the safety capacitor CY1 is grounded, the other end of the safety capacitor CY1 is connected to the casing ground, one end of the safety capacitor CY2 is grounded, the other end of the safety capacitor CY2 is connected to the casing ground, TW1 is a fixing screw used to contact the casing.

[0055] In this embodiment, the communication unit needs to transmit information over long distances, mainly to send information judged as an alarm to a remote end for alarm. The communication unit in this embodiment adopts a NB module. The power consumption of the NB module is much lower than that of communication modules such as the 4G module. It is also relatively cheap. It mainly monitors and transmits alarm information of abnormal locks, and the data volume is small. Using the NB module, the lock can enter a low-power sleep mode when it is on standby, and the power consumption can be reduced to a very low level. Only when the lock needs to send an alarm message to the outside, the NB module is awakened to send the corresponding alarm code to the management platform. In this process, the NB module has obvious advantages. After waking up, it can search for the signal for a short time and then send an alarm message. Compared with signal communication modules such as 4G, it has lower power consumption, faster speed, and the lowest traffic and hardware costs.

[0056] The NB module can send any alarm information that the MCU needs to send out by waking up the NB through the MCU's serial port. For example, alarms such as lock body vibration alarm, lock rope alarm, low battery, and temperature exceeding the set value.

[0057] Specific examples Figure 7The VDD_4V network signal output by the buck-boost power supply is input to the NB communication unit. The VDD_4V network signal is connected to the positive electrode of capacitor C22, one end of capacitor C23, one end of capacitor C24, one end of capacitor C25, one end of capacitor C26, one end of capacitor C27, one end of capacitor C28, one end of capacitor C29, pin 42 of NB module U9, and pin 43 of NB module U9. The negative electrode of capacitor C22 is grounded. The other end of capacitor C23 is grounded, the other end of capacitor C24 is grounded, and the other end of capacitor C25 is grounded. The other end of capacitor C26 is grounded, the other end of capacitor C27 is grounded, the other end of capacitor C28 is grounded, and the other end of capacitor C29 is grounded; the 8th pin of NB module U9 outputs the NB_BOOT network signal, and the NB_BOOT network signal is connected to one end of resistor R17, and the other end of resistor R17 is grounded. The 15th pin of NB module U9 outputs the NB_RST_WKUP network signal, and the NB_RST_WKUP network signal is connected to the collector end of transistor Q2 (NPN), the emitter end of transistor Q2 is grounded, and the base end of transistor Q2 is connected to one end of resistor R1 and one end of resistor R18; the other end of resistor R18 is connected to the MCU_RST_WKUP network signal, and the MCU_RST_WKUP network signal is output to the MCU, and the other end of resistor R1 is grounded. The 17th pin of NB module U9 outputs the UART1_RXD network signal, and the UART1_RXD network signal output is connected to the MCU part. The 18th pin of NB module U9 outputs the UART1_TX D network signal output, UART1_TXD network signal output to the MCU connection part, the 35th pin of NB module U9 outputs the NB_RF_ANT network signal, the NB_RF_ANT network signal is connected to one end of resistor R16 and one end of capacitor C30, the other end of capacitor C30 is grounded, the other end of resistor R16 is connected to one end of capacitor C31 and pin 1 of antenna base RF1, the other end of capacitor C31 is grounded, pin 2 of antenna base RF1 is grounded, and pin 3 of antenna base RF1 is grounded. The four pins of the antenna base RF1 are grounded; the first pin of the B module U9 is grounded, the tenth pin of the NB module U9 is grounded, the 27th pin of the NB module U9 is grounded, the 32nd pin of the NB module U9 is grounded, the 33rd pin of the NB module U9 is grounded, the 34th pin of the NB module U9 is grounded, the 36th pin of the NB module U9 is grounded, the 37th pin of the NB module U9 is grounded, the 40th pin of the NB module U9 is grounded, the 41st pin of the NB module U9 is grounded, and the remaining pins of the NB module U9 are left floating.

[0058] In one embodiment, since the interior of the lock body is in a sealed state, it is necessary to monitor the environmental conditions of the lock under normal circumstances to avoid the lock itself from being unable to perform normal monitoring in severe high and low temperature environments. Therefore, it is necessary to use a high and low temperature trigger alarm circuit inside it. This embodiment provides a temperature alarm unit, which communicates with the microprocessor through a set of I2 buses. When the detected temperature value is greater than the set threshold, an alarm is issued and the detected information is sent to the microprocessor. The temperature acquisition chip U9 of the temperature alarm unit is model T117. When connected, Figure 6 Pin 1 of the temperature acquisition chip U9 shown is the SCL signal for I2C communication, which is output to the MCU as an SCL network signal. Pin 6 of the temperature acquisition chip U9 is the SDA signal for I2C communication, which is output to the MCU as an SDA network signal. Pin 2 of the temperature acquisition chip U9 is grounded. Pin 3 of the temperature acquisition chip U9 is connected to one end of resistor R26 and the ALERT network signal. The ALERT network signal is connected to the ALERT network signal output to the MCU. The other end of resistor R26 is connected to the VCC_3.3V network signal. Pin 4 of the temperature acquisition chip U9 is grounded. Pin 5 of the temperature acquisition chip U9 is connected to the VCC_3.3V network signal and one end of capacitor C53. The other end of capacitor C53 is grounded. Pin 7 of the temperature acquisition chip U9 is grounded.

[0059] In another embodiment, when the lock communicates with the outside world, that is, when the lock is opened and closed by transmitting data through short-range wireless communication through the APP, it is realized through the Bluetooth communication module. In this embodiment, the Bluetooth communication module and the MCU (microprocessor) are combined to form a Bluetooth MCU module. The model of the Bluetooth MCU module of this combination is N32WB031KEQ. The user can transmit instructions to this Bluetooth MCU through the APP Bluetooth. This Bluetooth MCU interacts with the MCU through its own serial port, and plays the function of transparent transmission. After the specific APP is connected to the Bluetooth MCU by Bluetooth wireless, it sends instructions to the MCU through the APP. After receiving the instructions, the MCU controls the motor drive unit to lock and unlock the electronic safety lock. At the same time, the motor limit feedback unit is used to receive whether the safety lock reaches the specified position when locking and unlocking, and sends the detected signal to the microprocessor, and sends it to the APP through the MCU, and the APP reminds whether the locking or unlocking is completed.

[0060] In one embodiment, Figure 10In the Bluetooth MCU module shown, terminal H1 is the program programming port. Pin 1 of terminal H1 is connected to the VCC_3.3V power signal, pin 2 of terminal H1 is connected to the SW_DIO network signal, which is connected to pin 6 of the Bluetooth chip U1, pin 3 of terminal H1 is connected to the SW_CLK network signal, which is connected to pin 5 of the Bluetooth chip U1, and pin 4 of terminal H1 is grounded.

[0061] Pin 3 of the Bluetooth chip U1 is connected to one end of the resistor R5 and one end of the capacitor C12 with the RESET network signal. The other end of the resistor R5 is connected to the VCC_3.3V power signal, and the other end of the capacitor C12 is grounded.

[0062] Pin 8 of the Bluetooth chip U1 is connected to one end of a capacitor C11, and the other end of the capacitor C11 is grounded.

[0063] Pin 13 of the Bluetooth chip U1 is connected to the WAKEUP network signal and one end of the resistor R31. The WAKEUP network signal is connected to the MCU, and the other end of the resistor R31 is grounded.

[0064] Pin 16 of the Bluetooth chip U1 is connected to PB6_16_TXD1 to output the network signal to the MCU, and pin 17 of the Bluetooth chip U1 is connected to PB7_17_RXD1 to output the network signal to the MCU.

[0065] Pin 22 of Bluetooth chip U1 is connected to one end of capacitor C8, one end of capacitor C9, and the VCC_3.3V power signal. The other end of capacitor C8 is grounded, and the other end of capacitor C9 is grounded.

[0066] Pin 23 of the Bluetooth chip U1 is connected to one end of the inductor L3, the other end of the inductor L3 is connected to pin 24 of the Bluetooth chip U1, one end of the capacitor C6, one end of the capacitor C1, and the other end is connected to pin 27 of the Bluetooth chip U1, the other end of the capacitor C6 is grounded, and the other end of the capacitor C1 is grounded.

[0067] Pin 25 of the Bluetooth chip U1 is connected to one end of the inductor L1 and one end of the capacitor C3. The other end of the inductor L1 is connected to pin 26 of the Bluetooth chip U1. The other end of the capacitor C3 is connected to one end of the capacitor C4 and one end of the inductor L2. The other end of the capacitor C4 is grounded. The other end of the inductor L2 is connected to one end of the capacitor C5 and pin 1 of the antenna A1. The other end of the capacitor C5 is grounded. Pin 2 of the antenna A1 is connected to one end of the resistor R4, and the other end of the resistor R4 is grounded.

[0068] Pin 28 of the Bluetooth chip U1 is connected to one end of capacitor C2 and the VCC_3.3V power signal. The other end of capacitor C2 is grounded.

[0069] Pin 29 of Bluetooth chip U1 is connected to one end of capacitor C10 and pin 3 of crystal oscillator X1 via the X32MM_OUT network signal. The other end of capacitor C10 is grounded. Pin 30 of Bluetooth chip U1 is connected to one end of capacitor C7 and pin 1 of crystal oscillator X1 via the X32MP_IN network signal. The other end of capacitor C7 is grounded. Pin 4 and pin 2 of crystal oscillator X1 are grounded. Pin 33 of Bluetooth chip U1 is grounded. The remaining pins of Bluetooth chip U1 are left floating.

[0070] In this embodiment, the main purpose of the motor drive unit is to drive the lock to open and close. Therefore, the motor drive unit in this embodiment is mainly a drive circuit for the motor in the lock, which is used to drive the motor in the lock to open or close the lock. The setting of the motor in the lock belongs to common knowledge in this technical field, and its specific setting information is not described here. The motor is a DC motor available on the market, so it is only necessary to use a DC motor driver chip to make a drive circuit. In this way, the Bluetooth MCU can control the movement of the drive motor through a relatively weak I / O signal.

[0071] The driving circuit is as Figure 14 As shown, the MCU_OUT_A network signal emitted by the Bluetooth MCU is connected to pin 3 of the motor driver chip and one end of resistor R33. The other end of resistor R33 is grounded. The MCU_OUT_B network signal emitted by the Bluetooth MCU is connected to pin 4 of the motor driver chip and one end of resistor R32. The other end of resistor R32 is grounded. Pin 2 of the motor driver chip is grounded. Pin 1 of the motor driver chip transmits the OUT_A network signal and is connected to one end of capacitor C63 and pin 1 of motor terminal H2. Pin 6 of the motor driver chip transmits the OUT_B network signal and is connected to the other end of capacitor C63 and pin 2 of motor terminal H2. Pin 5 of the motor driver chip is connected to the BAT+ network and one end of capacitor C13. The other end of capacitor C13 is grounded.

[0072] The motor limit feedback unit in this embodiment is mainly used to detect whether locking or unlocking is completed. In specific implementation, the motor limit feedback unit is composed of two touch switches. The main function is to detect the limit of the slider movement driven by the motor. The touch switches are placed in one open position and the other closed position. When the mechanical movement reaches the position, it will touch the corresponding switch. In this way, the mechanical movement slider touches the switch, which will cause the switch to be closed, and the circuit will be turned on and receive a level change from low to high, thereby detecting the position of the mechanical movement slider of the entire lock, and judging whether the lock switch is completed. It is linked with the motor drive stroke self-locking to ensure the stability and reliability of the entire mechanical switch lock, and at the same time facilitate the MCU to perform logic control.

[0073] Specific as Figure 13The VCC_3.3V signal network shown connects pin 3 of touch switch SW1 and pin 1 of touch switch SW2. Pin 1 of touch switch SW1 is connected to one end of resistor R8 and one end of capacitor C18, outputting the DJXWFK signal network. The other end of resistor R8 is grounded. The other end of capacitor C18 is grounded.

[0074] Pin 4 of the touch switch SW1 is floating, pin 2 of the touch switch SW1 is floating, pin 3 of the touch switch SW2 is connected to one end of the resistor R23 and one end of the capacitor C45, and outputs the CDZT signal network. The other end of the resistor R23 is grounded, and the other end of the capacitor C45 is grounded. Pin 4 of the touch switch SW2 is floating, and pin 2 of the touch switch SW1 is floating. SW1 is the open limit, and SW1 is the closed limit.

[0075] In another embodiment, a touch unit is further included. In this embodiment, the touch unit is a capacitive touch button located on the outer casing of the lock. This touch button is connected to the microprocessor (MCU). Through this touch button, the MCU's sleep state can be activated. In other words, every time the user unlocks the lock and connects to Bluetooth, they need to touch this switch first. Only then will the lock wake up the MCU to control the Bluetooth MCU to send a Bluetooth broadcast to allow external search signals. During normal standby mode, the power consumption of this part of the Bluetooth broadcast can be saved. At the same time, this design can also be used for further functions, such as quickly touching twice or pressing and holding for several seconds, etc., so as to control other functions such as lock reset and self-test.

[0076] The specific circuit diagram of the touch unit is as follows Figure 12 As shown, the CMAN_OUT signal network is connected to one end of the resistor R6 and pin 1 of the touch key chip U3, the other end of the resistor R6 is grounded, pin 2 of the touch key chip U3 is grounded, pin 3 of the touch key chip U3 is connected to one end of the resistor R7 and one end of the capacitor C17, the other end of the capacitor C17 is grounded, the other end of the resistor R7 is connected to pin 1 of the probe pad T4, pin 4 of the touch key chip U3 is grounded, pin 5 of the touch key chip U3 is connected to one end of the capacitor C15, one end of the capacitor C16, and the VCC_3.3V network signal power supply, and pin 6 of the touch key chip U3 is grounded.

[0077] In one embodiment, a three-color indicator light is provided to provide reminders. It primarily functions as a light display for external interaction, displaying relevant lock status. Different light combinations can be used to create a variety of status indications. For example, a solid red light for charging, a solid green light when fully charged, a solid blue light when connecting to Bluetooth, and a rapidly flashing blue light when waiting to connect to Bluetooth.

[0078] Therefore, the light needs to be controlled by the MCU, so that the MCU can control the light to flash quickly, flash slowly, flash several times, etc. The CHRG and STDBY network signals in the figure are directly determined by the charging management chip hardware. When charging, the red light is always on. When fully charged, the red light goes out and the green light is always on.

[0079] The circuit connection method of the indicator light is as follows Figure 11 As shown, the CHRG signal network is connected to the LED_R signal network and one end of the resistor R11, the other end of the resistor R11 is connected to pin 1 of the three-color lamp LED1, the VCC_3.3V signal network is connected to pin 2 of the three-color lamp LED1, the STDBY signal network is connected to the LED_G signal network and one end of the resistor R12, the other end of the resistor R12 is connected to pin 4 of the three-color lamp LED1, and the LED_B network is connected to pin 3 of the three-color lamp LED1.

[0080] This embodiment also features multiple window inspection ports, primarily to facilitate functional testing of the finished product during assembly and testing. This serial port also serves as a reset port for activation during final shipment, facilitating final product inspection. The serial port inspection port simply connects the MCU's serial port 1 (pins 16 and 17) as a test endpoint and is not intended for connection to other components. It is primarily a reserved test modulation port. See the schematic diagram for the printed serial port area in the MCU schematic.

[0081] This embodiment utilizes a reusable intelligent electronic lock control system. During operation, the entire circuit relies on an MCU to connect various components. By collecting feedback signals from these components or communicating via Bluetooth, the internal functions and status of the entire lock are reported. For example, during normal use, after receiving the correct switch command, the MCU controls the motor drive to complete forward and reverse rotation. This forward and reverse rotation of the motor triggers the motor limit feedback function when the moving parts reach their desired position, providing feedback on the lock's open and closed positions. The lock's internal status is monitored by the lock's broken cord detection, lock body vibration sensor, battery charge detection, temperature detection, and battery charge detection circuits, primarily designed to detect and provide feedback on any potential internal anomalies. When interacting with an external app, the corresponding Bluetooth MCU is activated for transparent data processing. When any of these anomalies or alarms occur, they are uploaded to a cloud server via remote NB communication, notifying the corresponding administrator. The charging protection and battery charge management components ensure the proper charging and discharging of the internal rechargeable battery, ensuring battery life and preventing external tampering, thereby enhancing safety and reliability. The buck-boost power supply provides a stable and appropriate power supply voltage to the various functional modules within the board, ensuring that the power supply to the various components of the board does not deteriorate as the battery voltage decreases. The three-color indicator light allows the operator to easily identify the lock's current status and determine whether it is operating normally. The touch button is the only physical contact button remaining for human interaction with the lock, and it can be used to trigger the lock to start broadcasting Bluetooth for connection. If this button is not pressed normally, there will be a 15-second delay, during which the Bluetooth wireless communication broadcast signal stops and the lock enters low-power mode. This is designed to reduce power consumption during non-near-end interactions, thereby extending the lock's standby time. This allows for longer monitoring and standby time requirements.

[0082] Using Bluetooth Low Energy (BLE) as a mobile app for lock and unlock interaction, this lock integrates protection against forced unlocking and lock opening and closing records. This electronic monitoring lock can be used for security purposes. Unlike traditional locks that simply open and close the door, it is more like a smart electronic lock that monitors its own status in real time to ensure its integrity. This effectively ensures that even during extended use, the owner is immediately notified of any abnormalities, preventing financial loss.

[0083] The technical solution adopted in the embodiment can achieve the following technical effects: low-power Bluetooth communication and the use of touch buttons to trigger Bluetooth broadcasting. This can further reduce the power consumption of the lock and extend the overall standby time of the lock without affecting the normal use of the user;

[0084] Adopting modular functional design, the modules are triggered to run according to their functions while ensuring the functions. This can greatly reduce unnecessary power consumption;

[0085] It can achieve real-time monitoring. During the locking process, it can ensure that the lock is always in the monitoring state of the lock status. If any abnormality occurs, the bound owner can be notified immediately. It is particularly suitable for transportation industries such as cold chain and key areas that require real-time monitoring.

[0086] Compared with traditional locks, it can be reused; with its own lock body structure, it can be sealed and locked by a wire rope like a traditional lock, and like a traditional lock, the lock rope can be freely adjusted. In circuit monitoring, the wire rope can be used to alarm for rope damage, and there is no need to specify the location where the lock rope is locked.

[0087] The lock directly transmits alarm information to the user, which is more convenient and quick. The overall design is comprehensive, including alarms for lock body damage, lock rope damage, artificial fire, external high voltage, high current input, short circuit damage, etc., and low power consumption is taken into consideration. The current design is tested and can achieve low power standby for 120 days with a battery capacity of 1500mA. It can be optimized to the microampere level of power consumption standby.

[0088] The lock rope detection function cleverly utilizes the conductivity of the wire rope lock rope and uses a simple level signal detection principle to achieve a high level of protection against lock rope damage.

[0089] The above embodiments are merely examples of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention falls within the scope of protection of the present invention.

Claims

1. A reusable intelligent electronic lock control system, characterized in that: It includes a microprocessor, a lock rope breakage detection unit, a lock body vibration detection unit, a power supply unit and a communication unit; The lock rope breakage detection unit is in communication with the microprocessor and is used to detect whether the lock rope of the electronic lock is broken and send a detected signal to the microprocessor; The lock body vibration detection unit is in communication with the microprocessor and is used to detect whether the lock body of the electronic lock is vibrating and send the detected signal to the microprocessor; The microprocessor is connected to the remote alarm unit through the communication unit. When the microprocessor receives a signal that the lock rope of the electronic lock is broken or the lock body of the electronic lock is vibrating, it controls the remote alarm unit to sound an alarm. The power supply unit supplies power to the microprocessor, the lock rope breakage detection unit and the lock body vibration detection unit.

2. A reusable intelligent electronic lock control system according to claim 1, characterized in that: It also includes a temperature alarm unit, which is in communication with the microprocessor. The temperature alarm unit is used to detect the temperature of the electronic lock and, when the detected temperature value is greater than a set threshold, issues an alarm and sends the detected information to the microprocessor.

3. A reusable intelligent electronic lock control system according to claim 1, characterized in that: It also includes a Bluetooth communication unit, a motor drive unit, and a motor limit feedback unit; The microprocessor is respectively connected to the Bluetooth communication unit, the motor drive unit and the motor limit feedback unit for communication; The microprocessor is wirelessly connected to the remote control APP through a Bluetooth communication unit. After receiving the locking or unlocking command issued by the remote control APP, the microprocessor controls the motor drive unit to lock and unlock the electronic safety lock; the motor limit feedback unit is used to receive whether the safety lock reaches the specified position when locking and unlocking, and sends the detected signal to the microprocessor.

4. A reusable intelligent electronic lock control system according to claim 1, characterized in that: The device also includes a touch unit, which is communicatively connected with the microprocessor.

5. A reusable intelligent electronic lock control system according to claim 1, characterized in that: It also includes indicator lights, which are connected to the power supply unit and the microprocessor respectively.

6. A reusable intelligent electronic lock control system according to claim 1, characterized in that: The power supply unit includes a battery, a charging protection unit, a charging management unit and a power detection unit; the charging protection unit, the charging management unit and the battery are electrically connected in sequence, and the power detection unit is communicatively connected to the microprocessor for detecting battery power information and sending the detected information to the microprocessor.

7. A reusable intelligent electronic lock control system according to claim 6, characterized in that: It also includes a step-up and step-down unit, which is connected to the battery to step up or step down the battery. After the battery is stepped up or stepped down, it provides power for the microprocessor, the communication unit, and the Bluetooth communication unit.

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