Power down management method, apparatus and system for load terminal

Abstract

The application is suitable for the field of electrical equipment, and provides a load terminal power-off management method, device and system. The load terminal is connected with a control device through a DC interface, and a first secondary unlocking device is arranged at the DC interface. The load terminal power-off management method comprises the following steps: detecting whether the load terminal currently meets a preset shutdown condition, wherein the preset shutdown condition comprises that a probe of the first secondary unlocking device is disconnected from the load terminal, and / or the probe of the first secondary unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of a main power supply contact at the DC interface; executing a shutdown process when the load terminal currently meets the preset shutdown condition; and sending a first target message to the control device, wherein the first target message is used to indicate that the load terminal meets the preset shutdown condition. Through the above method, the safety hazards and damage probability of the load terminal in use can be reduced.

Description

Technical Field

[0001] This application belongs to the field of electrical equipment technology, and in particular relates to a method, device and system for power-off management of load terminals. Background Technology

[0002] Existing electrical equipment generally uses DC voltage power supply. However, the mains power grid provides AC power, and its voltage level is usually much higher than the actual operating voltage required by the load terminal. This mismatch between the form of electrical energy and the voltage level makes direct use of mains power infeasible. To solve this problem, an AC power adapter is usually used as an intermediate conversion device. First, the AC mains power is converted into the DC power required by the load terminal. Then, a physical and electrical connection is established between the adapter and the load terminal through a standardized DC interface, thereby achieving a safe, stable, and efficient power supply.

[0003] During the operation of the load terminal, the power supply may be unplugged by the user. If the power is not turned off in time, there will be safety hazards, such as damage to the equipment. Summary of the Invention

[0004] This application provides a method, apparatus, and system for power-off management of load terminals, which can solve the problem of significant safety hazards that may exist in existing load terminals during the power-off process.

[0005] In a first aspect, embodiments of this application provide a power-down management method for a load terminal, applied to a load terminal, wherein the load terminal is connected to a control device via a DC interface, and the DC interface is provided with a first and second level unlocking device, and the power-down management method for the load terminal includes: Detect whether the load terminal currently meets the preset shutdown conditions. The preset shutdown conditions include: the probe of the first secondary unlocking device is disconnected from the load terminal, and / or the probe of the first secondary unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of the main power supply contact at the DC interface. If the load terminal currently meets the preset shutdown conditions, execute the shutdown procedure; A first target message is sent to the control device, the first target message being used to instruct the load terminal to meet preset shutdown conditions.

[0006] The beneficial effects of the embodiments in this application compared with the prior art are: In this embodiment, it is detected whether the load terminal currently meets the preset shutdown conditions. If the load terminal currently meets the preset shutdown conditions, a shutdown procedure is executed, and a first target message instructing the control device to meet the preset shutdown conditions is sent. The preset shutdown conditions include: the probe of the first secondary unlocking device is disconnected from the load terminal, and / or the probe of the first secondary unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of the main power supply contact at the DC interface. Because the probe of the first secondary unlocking device is shorter than the length of the main power supply contact at the DC interface, at the instant the probe is disconnected from the load terminal and / or from the control device, the main power supply contact remains connected. Therefore, the load terminal can still obtain power through the main power supply contact, and the obtained power is sufficient to support the load terminal in executing the shutdown procedure. That is, by using the disconnection of the probes of the first and second level unlocking devices (whose length is shorter than the length of the main power supply contact at the DC interface) from the load terminal as one of the shutdown conditions, and / or by using the disconnection of the probes of the first and second level unlocking devices from the control equipment as another shutdown condition, the shutdown process can be triggered promptly when the shutdown condition is met, thereby reducing the safety hazards and probability of damage to the load terminal during use. Simultaneously, by sending a first target message to the control equipment to indicate that the load terminal has met the preset shutdown condition, the control equipment can promptly know that the load terminal has met the shutdown condition, and thus collaboratively complete the safe power-off operation.

[0007] Secondly, embodiments of this application provide a power-down management method for a load terminal, applied to a control device, the power-down management method for the load terminal comprising: The control device receives a first target message sent by the load terminal, the first target message being used to indicate that the load terminal meets preset shutdown conditions. The control device is connected to the load terminal via a DC interface, and a first and second level unlocking device is provided at the DC interface. The length of the probe of the first and second level unlocking device is shorter than the length of the main power supply contact at the DC interface. The power adapter is notified to turn off the target voltage, wherein the target voltage is greater than a preset voltage threshold.

[0008] Thirdly, embodiments of this application provide a power-off management device for a load terminal, applied to a load terminal, wherein the load terminal is connected to a control device via a DC interface, and the DC interface is provided with a first and second level unlocking device. The power-off management device for the load terminal includes: A shutdown condition detection module is used to detect whether the load terminal currently meets preset shutdown conditions. The preset shutdown conditions include: the probe of the first secondary unlocking device is disconnected from the load terminal, and / or the probe of the first secondary unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of the main power supply contact at the DC interface. The shutdown process execution module is used to execute the shutdown process when the load terminal currently meets the preset shutdown conditions; The first target message sending module is used to send a first target message to the control device, wherein the first target message is used to instruct the load terminal to meet the preset shutdown conditions.

[0009] Fourthly, embodiments of this application provide a power-down management device for a load terminal, applied to a control device, the power-down management device for the load terminal comprising: The first target message receiving module is used to receive the first target message sent by the load terminal. The first target message is used to indicate that the load terminal meets the preset shutdown conditions. The control device is connected to the load terminal through a DC interface, and a first and second level unlocking device is provided at the DC interface. The length of the probe of the first and second level unlocking device is shorter than the length of the main power supply contact at the DC interface. The target voltage shutdown notification module is used to notify the power adapter to shut off the target voltage, wherein the target voltage is greater than a preset voltage threshold.

[0010] Fifthly, embodiments of this application provide a power-off management system for a load terminal, including a load terminal, a control device, a power adapter, a first computer program stored in the memory of the load terminal and executable on the processor of the load terminal, and a second computer program stored in the memory of the control device and executable on the processor of the control device. When the processor of the load terminal executes the first computer program, it implements the method described in the first aspect, and when the processor of the control device executes the second computer program, it implements the method described in the second aspect.

[0011] It is understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a flowchart illustrating a power-down management method for a load terminal, as provided in an embodiment of this application. Figure 2 This is a schematic diagram of the connection between a load terminal (a lamp) and a lighting control device provided in an embodiment of this application. Figure 3 This is a flowchart illustrating a power-down management method for a load terminal of a control device, provided in an embodiment of this application. Figure 4 This is a schematic diagram of the structure of a power-down management device for a load terminal provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a power-off management device for a load terminal of a control device provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a load terminal power-off management system provided in an embodiment of this application. Detailed Implementation

[0014] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0015] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0016] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0017] Furthermore, in the description of this application and the appended claims, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0019] Currently, to ensure that DC-powered load terminals can be compatible with and use AC mains power, control equipment with AC power adapters is typically used as an intermediate conversion device. This AC power adapter converts AC mains power to DC power, and then establishes a physical and electrical connection with the load terminal through a DC interface. The DC interface serves as the physical and electrical connection channel between the AC power adapter and the control equipment, and its connection status directly determines whether the DC power supply can function properly.

[0020] During the use of a load terminal, the DC power supply may be abnormally unplugged by the user. When this occurs, there is a gradual disconnection process from full plugging to complete disconnection of the DC interface. If the power adapter fails to cut off the output in time before the DC interface is completely physically disconnected, an arc or voltage surge may occur during this gradual disconnection process, potentially damaging the load terminal.

[0021] To reduce potential safety hazards during the use of load terminals, this application provides a power-off management method for load terminals.

[0022] In the power-down management method of the load terminal, a first and second level unlocking device (which includes a probe and whose length is shorter than the length of the main power supply contact at the DC interface) is set at the DC interface of the load terminal. The first and second level unlocking device can trigger the load terminal to perform the shutdown process in advance before the physical disconnection between the load terminal and the control device occurs, thereby completing the protection of the load terminal before the physical port is completely disconnected.

[0023] The power-down management method for a load terminal provided in the embodiments of this application is described below with reference to the accompanying drawings.

[0024] Figure 1 The diagram shows a flowchart of a power-down management method for a load terminal according to an embodiment of this application. This power-down management method is applied to a load terminal connected to a control device via a DC interface, and the DC interface is equipped with first and second level unlocking devices. The power-down management method for the load terminal is described in detail below: S11, detect whether the load terminal currently meets the preset shutdown conditions. The preset shutdown conditions include: the probe of the first and second level unlocking device is disconnected from the load terminal, and / or the probe of the first and second level unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of the main power supply contact at the DC interface.

[0025] In this embodiment, the load terminal is connected to the control device via a DC interface. The DC interface is equipped with a first and second level unlocking device, and the probes of the first and second level unlocking device are shorter than the length of the main power supply contact at the DC interface. This DC interface can also be called a DC power interface, and it can be either a push-button type or a knob type; no limitation is made here.

[0026] In this embodiment of the application, when the preset shutdown conditions include the disconnection of the probe of the first and second level unlocking device from the load terminal and / or the disconnection of the probe of the first and second level unlocking device from the control device, the load terminal can detect whether it currently meets the shutdown conditions based on the level change caused by the disconnection of the probe. Of course, it can also be detected by using the principle that the impedance of the detection circuit between the probe and the corresponding contact of the other end suddenly becomes infinite when the connection is broken. This is not limited here.

[0027] In this embodiment of the application, when detecting whether the load terminal currently meets the shutdown conditions based on the level change caused by the probe being disconnected, the above-mentioned detection of whether the load terminal currently meets the preset shutdown conditions includes: The external interrupt of the first and second level unlocking devices is detected. If it is triggered, the target pin is detected to be at the target level.

[0028] The aforementioned target pin is the electrical connection point of the probe, and the aforementioned target level is the preset level corresponding to the disconnection of the probe of the first and second level unlocking device from the load terminal and / or from the control device. The preset level can be a low level or a high level, and is not limited here.

[0029] In this embodiment, the load terminal can determine whether the external interrupt of the first and second level unlocking device has been triggered by detecting the flag bit corresponding to the external interrupt. Of course, the load terminal can also determine whether the external interrupt of the first and second level unlocking device has been triggered by detecting whether the interrupt service routine has been entered; this is not limited here.

[0030] When the load terminal detects that an external interrupt of the first and second level unlocking devices has been triggered, it checks whether the level of the target pin is the target level. If so, the load terminal executes a shutdown procedure; otherwise, it checks whether the level of the target pin is the target level again. Optionally, after determining that an external interrupt of the first and second level unlocking devices has been triggered, the level of the electrical connection point of the probe can be directly checked to see if it is the target level. Alternatively, it can wait for a preset trigger duration before checking whether the level of the target pin is the target level; this is not limited here. Optionally, the preset trigger duration can be 1ms or other durations; this is not limited here. Waiting for the preset trigger duration before checking the level of the target pin is equivalent to reserving stabilization time for the mechanical contacts, thereby ensuring that the detected level is a true, continuous, and interference-free level state, rather than transient noise or jitter.

[0031] In this embodiment of the application, considering that the load terminal is connected to the control device through the DC interface, and the control device is connected to the power adapter through the AC interface, during the operation of the load terminal, in addition to the possible abnormal disconnection event of the DC interface, the aforementioned AC interface may also be abnormally disconnected. After the AC interface is abnormally disconnected, even if the DC interface is not abnormally disconnected, the load terminal still needs to be shut down to reduce the probability of damage to the load terminal.

[0032] When an abnormal disconnection event occurs at the AC interface, the current voltage of the load terminal will change. Therefore, the current voltage of the load terminal can be used to detect whether the load terminal meets the shutdown conditions. Specifically, the preset shutdown conditions also include: the difference between the current voltage of the load terminal and the target voltage is greater than a preset difference threshold, wherein the target voltage is greater than a preset voltage threshold. Detecting whether the load terminal currently meets the preset shutdown conditions includes: The microcontroller of the load terminal detects the current voltage of the load terminal. If the difference between the current voltage of the load terminal and the target voltage is greater than a preset difference threshold, it is determined that the load terminal currently meets the preset shutdown conditions.

[0033] If the current voltage is lower than the target voltage, and the difference between the current voltage and the target voltage is significant, it indicates that an abnormal disconnection event may have occurred at the AC interface. In reality, power supply lines may experience voltage drops, and the detection process may be subject to errors or transient interference. Therefore, determining whether the load terminal meets the preset shutdown conditions by judging whether the difference between the current voltage and the target voltage is greater than a preset threshold, rather than judging whether the current voltage is equal to the target voltage, yields a more accurate result.

[0034] In this embodiment, the current voltage of the load terminal can be detected using the analog-to-digital converter (ADC) function of the microcontroller. If the current voltage is less than the target voltage, and the difference between the current voltage and the target voltage is greater than a preset difference threshold, then the load terminal is determined to meet the preset shutdown conditions. Optionally, to detect the current voltage of the load terminal more promptly, the ADC function can be used, and the detection can be performed through a discharge circuit. Since the discharge circuit can cause the voltage of the ADC input pin to drop rapidly when an abnormal disconnection event occurs at the AC interface, adding a discharge circuit can detect the abnormal disconnection event of the AC interface more promptly, thereby enabling the load terminal to detect faults more quickly.

[0035] Optionally, when the load terminal has at least two voltage outputs, and these output voltages include high voltage (e.g., 96V) outputs, the aforementioned detection of the current voltage of the load terminal specifically refers to detecting the current voltage of the high-voltage power supply circuit used by the load terminal to drive its main function. For example, assuming the power adapter is connected to the power supply and both the AC and DC interfaces are fully plugged in, the power supply voltage is distributed to form two outputs: a first voltage and a second voltage, with the second voltage being higher than the first voltage. That is, both the control device and the load terminal have these two outputs. The first voltage is used for auxiliary communication between the control device and the load terminal, such as the load terminal sending a first target message to the control device to indicate that the load terminal meets preset shutdown conditions. The second voltage is used to drive the main power function of the load terminal; for example, a lamp serving as the load terminal can only perform operations such as power-on and lighting after the second voltage power supply circuit is activated. In this case, detecting the current voltage of the load terminal specifically refers to detecting the current voltage of the power supply circuit for the second voltage of the load terminal. If different ADCs are pre-configured to detect different power supply circuits, when it is necessary to detect the current voltage of a high-voltage power supply circuit, the ADC corresponding to that high-voltage power supply circuit is used to detect its voltage. This configuration allows each ADC to independently detect the voltage value of different power supply circuits.

[0036] Since the probability of safety hazards caused by high voltage is usually greater than that caused by low voltage, detecting the current voltage of the high-voltage power supply circuit used to drive the main function of the load terminal, and determining whether the load terminal meets the shutdown conditions based on the detected voltage, helps to reduce the probability of safety hazards caused by the activation of the high-voltage power supply circuit.

[0037] In some embodiments, before detecting whether the load terminal currently meets the preset shutdown conditions, the method further includes: The detection checks whether the aforementioned load terminal currently meets the preset detection conditions, which include: the main function of the aforementioned load terminal is activated.

[0038] When the main function of a load terminal is activated, it indicates that the load terminal is in operating mode, not standby or fault protection mode. Considering that the normal range of the same physical quantity may differ depending on the load terminal's mode, activating the main function is a preset detection condition. The system checks whether the load terminal currently meets this condition, and only after it meets the preset shutdown condition is the system checked. This improves the accuracy of subsequent shutdown condition checks. Furthermore, when the load terminal has a high-voltage output, if its main function is activated, it indicates that the high voltage is under normal power supply. For example, assuming the load terminal is a lamp with both 24V and 96V (high voltage) outputs, activating the main function indicates that the high-voltage power supply circuit (96V) is under normal power supply. Since high voltage increases the probability of a major safety incident compared to low voltage, using the activation of the main function as a preset detection condition also helps reduce the probability of such incidents.

[0039] S12, if the aforementioned load terminal currently meets the aforementioned preset shutdown conditions, execute the shutdown procedure.

[0040] In this embodiment of the application, when the shutdown conditions include the probe of the first secondary unlocking device being disconnected from the load terminal, and / or the probe of the first secondary unlocking device being disconnected from the control device, it is detected whether the external interrupt of the first secondary unlocking device is triggered. If it is triggered, it is detected whether the target pin is at the target level. If it is at the target level, it is determined that the load terminal currently meets the preset shutdown conditions and the shutdown process is executed.

[0041] When the shutdown condition includes the difference between the current voltage of the load terminal and the target voltage being greater than a preset difference threshold, if the difference between the current voltage of the load terminal and the target voltage is detected to be greater than the preset difference threshold, the shutdown process is executed.

[0042] When the shutdown condition includes the difference between the current voltage and the target voltage of the high-voltage power supply circuit used by the load terminal to drive the main function of the load terminal being greater than a preset difference threshold, if it is detected that the difference between the current voltage and the target voltage of the high-voltage power supply circuit used by the load terminal to drive the main function of the load terminal is greater than the preset difference threshold, then the shutdown process is executed.

[0043] Optionally, the shutdown process in this application embodiment may include: (1) turning off the DCDC channel (takes about 500ms). Optionally, when there are multiple DCDC channels, the DCDC channels can be turned off gradually to avoid the impact caused by sudden current changes. For example, if there are 5 DCDC channels, one DCDC enable signal can be turned off every preset shutdown time (e.g., 100ms). The shutdown sequence can start from the last channel turned on and shut down sequentially, or it can be shut down sequentially in a predetermined order. It should be noted that when shutting down a channel, it is necessary to ensure that each DCDC channel is completely shut down before proceeding to the next step to avoid residual voltage. (2) Turning off the pulse width modulation (PWM) output to stop the drive signal of the load terminal. For example, when the load terminal is a lamp body, turning off the PWM will stop the drive signal of the lamp body, thereby making the light source of the lamp body safely extinguished. Specifically, the PWM output function of the timer can be turned off first, and the current PWM cycle can be completed or the output can be forced to a low level. Then, the PWM pin can be switched to the general purpose input / output (GPIO) mode and kept at a low level to ensure that the metal-oxide-semiconductor (MOS) transistor is in the off state. When the PWM is turned off, the drive circuit of the load terminal will no longer have a switching signal, and the current of the lamp body will gradually drop to zero. (3) Turn off the auxiliary power supply to completely cut off the power supply of the drive circuit. For example, assuming that the auxiliary power supply includes mos10V (i.e., the MOS transistor drive power supply) and op5V (operational amplifier / control circuit 5V power supply), considering that mos10V is the gate drive power supply of the power MOS transistor, the mos10V should be turned off first to ensure that the MOS transistor is reliably turned off. The op5V is the power supply of the control circuit, and turning it off later can ensure that the control logic remains effective until the end. Therefore, it is possible to turn off mos10V first and then turn off op5V. Optionally, after turning off MOS10V, a preset delay time (such as 50ms~100ms) can be used before turning off OP5V. By delaying for the preset delay time, it can be ensured that MOS10V is completely discharged, avoiding the MOS transistor being in an uncertain state at the moment the 5V control circuit is powered off.

[0044] S13, send a first target message to the control device, the first target message being used to instruct the load terminal to meet the preset shutdown conditions.

[0045] In this embodiment, the load terminal establishes a communication connection with the control device and sends a first target message to the control device through the communication connection to instruct the load terminal to meet preset shutdown conditions. The communication connection includes wired communication connections such as RS-485, RS-232, or CAN bus connections; it also includes wireless communication connections, such as those via Bluetooth or Wi-Fi.

[0046] Optionally, the aforementioned first target message may include a first flag, which indicates that the load terminal meets preset shutdown conditions. Whether the first flag is represented by a numerical value (such as "0") or by text is not limited here.

[0047] Optionally, when there are multiple shutdown conditions, different first flags can be used to represent the first target message mentioned above, which is not limited here.

[0048] Optionally, when the load terminal detects that the current shutdown conditions are not met, it may send a second target message to the control device. This second target message indicates that the load terminal does not currently meet the preset shutdown conditions. Optionally, the second target message may include a second flag indicating that the load terminal does not meet the preset shutdown conditions. Whether the second flag is represented by a numerical value (such as "1") or by text is not limited here.

[0049] In this embodiment, it is detected whether the load terminal currently meets preset shutdown conditions. If the load terminal currently meets the preset shutdown conditions, a shutdown procedure is executed, and a first target message instructing the control device to meet the preset shutdown conditions is sent. The preset shutdown conditions include: the probe of the first secondary unlocking device is disconnected from the load terminal, and / or the probe of the first secondary unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of the main power supply contact at the DC interface. Because the probe of the first secondary unlocking device is shorter than the length of the main power supply contact at the DC interface, at the instant the probe is disconnected from the load terminal and / or from the control device, the main power supply contact remains connected. Therefore, the load terminal can still obtain power through the main power supply contact, and the obtained power is sufficient to support the load terminal in executing the shutdown procedure. That is, by using the disconnection of the probes of the first and second level unlocking devices (whose length is shorter than the length of the main power supply contact at the DC interface) from the load terminal as one of the shutdown conditions, and / or by using the disconnection of the probes of the first and second level unlocking devices from the control equipment as another shutdown condition, the shutdown process can be triggered promptly when the shutdown condition is met, thereby reducing the safety hazards and probability of damage to the load terminal during use. Simultaneously, by sending a first target message to the control equipment to indicate that the load terminal has met the preset shutdown condition, the control equipment can promptly know that the load terminal has met the shutdown condition, and thus collaboratively complete the safe power-off operation.

[0050] To more clearly describe the power-down management method for the load terminal provided in the embodiments of this application, the following is combined with... Figure 2 Please provide an explanation.

[0051] Figure 2 This diagram illustrates the connection between a luminaire and a lighting control device when the load terminal is a luminaire.

[0052] exist Figure 2 In this configuration, the lighting control device 23 is connected to the power adapter 22 via AC interface 21, and the lighting control device 23 is connected to the lighting fixture via 485 bus 24. Figure 2 The lamps include a lamp body 25 and a light-emitting diode (LED) 26. Both ends of the 485 bus 24 are DC interfaces. A first and second level unlocking device is provided at the DC interface. The length of the probe of the first and second level unlocking device is shorter than the length of the main power supply contact at the DC interface.

[0053] When the lamp body 25 detects that the probe of the first and second level unlocking device is disconnected from the lamp body 25, and / or detects that the probe of the first and second level unlocking device is disconnected from the lamp control device 23, it is determined that the preset shutdown conditions are met and the shutdown process is executed.

[0054] The lamp body 25 sends a first target message to the lighting control device 23, which is used to indicate that the lamp body 25 meets the preset shutdown conditions.

[0055] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0056] Figure 3 A flowchart illustrating another power-down management method for a load terminal provided in an embodiment of this application is shown. This power-down management method is applied to a control device, and the power-down management method is described in detail below: S31, receive the first target message sent by the load terminal, the first target message being used to instruct the load terminal to meet the preset shutdown conditions.

[0057] In this embodiment, the control device is connected to a load terminal and a power adapter. The control device receives a first target message sent by the load terminal through an established communication connection. This communication connection includes wired communication connections such as RS-485, RS-232, or CAN bus connections; it also includes wireless communication connections, such as those via Bluetooth or Wi-Fi.

[0058] S32, instruct the power adapter to turn off the target voltage, wherein the target voltage is greater than a preset voltage threshold.

[0059] The control device notifies the power adapter to shut off the target voltage via a communication connection established with the power adapter. This communication connection includes wired connections such as RS-485, RS-232, or CAN bus connections; it also includes wireless connections, such as those via Bluetooth or Wi-Fi.

[0060] In this embodiment, after receiving a first target message instructing the load terminal to meet preset shutdown conditions, the control device notifies the power adapter to shut down a target voltage exceeding a preset voltage threshold. Since meeting the preset shutdown conditions indicates that the load terminal no longer requires a higher voltage input from the control device, and higher voltage increases the probability of a major safety incident, the control device proactively notifies the power adapter to shut down the target voltage exceeding the preset threshold. This timely disconnection of high-voltage output reduces the risk of safety incidents caused by continuous high-voltage supply, lowers the probability of safety hazards and damage to the load terminal during use, reduces unnecessary energy consumption, and improves the overall safety and reliability of the system.

[0061] In this embodiment of the application, considering that the preset shutdown conditions may include different conditions, the content included in the first target message may be set to correspond to the conditions included in the preset shutdown conditions.

[0062] For example, assuming the preset shutdown conditions include: the probe of the first secondary unlocking device is disconnected from the load terminal, and / or, the probe of the first secondary unlocking device is disconnected from the control device, then the content included in the first target message can be set as a first flag of the first secondary unlocking device indicating that the probe of the first secondary unlocking device is disconnected from the load terminal, and / or, a first flag of the first secondary unlocking device indicating that the probe of the first secondary unlocking device is disconnected from the control device. That is: when the control device is connected to the load terminal through a DC interface, and a first secondary unlocking device is provided at the DC interface, the first target message includes the first flag of the first secondary unlocking device, and receiving the first target message sent by the load terminal includes: The system receives a first flag from the first and second level unlocking devices sent by the load terminal. The first flag of the first and second level unlocking devices is used to indicate that the probe of the first and second level unlocking devices is disconnected from the load terminal, and / or to indicate that the probe of the first and second level unlocking devices is disconnected from the control device.

[0063] In this embodiment, a first flag of the first and second level unlocking device is pre-set. This first flag indicates that the probe of the first and second level unlocking device is disconnected from the load terminal, and / or indicates that the probe of the first and second level unlocking device is disconnected from the control device. Optionally, the first flag of the first and second level unlocking device can be represented by a numerical value (such as "0") or by text information; no limitation is made here.

[0064] In addition to setting the first flag of the first and second level unlocking devices, a second flag of the first and second level unlocking devices can also be preset. This second flag indicates that the probes of the first and second level unlocking devices are connected to the load terminal and the control device. This second flag can be represented by a numerical value (such as "1") or by text information; no limitation is made here. When the control device receives a second target message from the load terminal indicating that the load terminal does not meet preset shutdown conditions, such as receiving the second flag of the first and second level unlocking devices from the load terminal, the control device can choose not to notify the power adapter to shut down the target voltage.

[0065] In this embodiment, since the first flag of the first secondary unlocking device is used to indicate that its probe is disconnected from the load terminal and / or to indicate that its probe is disconnected from the control device, when the control device receives the first flag sent by the load terminal, it can not only know that the load terminal meets the preset shutdown conditions, but also specifically know that the cause of the shutdown conditions is that the probe of the first secondary unlocking device is disconnected from the load terminal and / or from the control device, thereby helping the control device to select a more accurate response strategy based on the first flag.

[0066] For example, assuming the preset shutdown conditions include: the difference between the current voltage of the load terminal and the target voltage is greater than a preset difference threshold, then the content included in the first target message can be set as a first flag indicating the voltage difference between the current voltage of the load terminal and the target voltage is greater than the preset difference threshold. That is: the aforementioned first target message includes a first voltage flag, and receiving the aforementioned first target message sent by the load terminal includes: The first voltage flag sent by the load terminal is received, and the first voltage flag is used to indicate that the difference between the current voltage of the load terminal and the target voltage is greater than a preset difference threshold.

[0067] In this embodiment, a first voltage flag is preset. This first voltage flag indicates that the current voltage of the load terminal is less than the target voltage, and the difference between the current voltage and the target voltage is greater than a preset difference threshold. Optionally, the first voltage flag can be represented by a numerical value (such as "3") or by text information; no limitation is made here.

[0068] In addition to setting the first voltage flag, a second voltage flag can also be preset. This second voltage flag indicates that the difference between the current voltage of the load terminal and the aforementioned target voltage is not greater than a preset difference threshold. This second flag can be represented by a numerical value (such as "4") or by textual information; no limitation is made here. When the control device receives a second target message from the load terminal indicating that the load terminal does not meet the preset shutdown conditions, such as receiving the second voltage flag from the load terminal, the control device may choose not to notify the power adapter to shut down the target voltage.

[0069] In this embodiment, since the first voltage flag is used to indicate that the difference between the current voltage and the target voltage of the load terminal is greater than a preset difference threshold, when the control device receives the first flag sent by the load terminal, it can not only know that the load terminal meets the preset shutdown condition, but also specifically know that the shutdown condition is caused by the difference between the current voltage and the target voltage of the load terminal being greater than the preset difference threshold, thereby helping the control device to select a more accurate response strategy based on the first flag.

[0070] The above describes the process of how the control device controls the power adapter according to the first target message sent by the load terminal when it can establish a communication connection with the load terminal. Considering that in practical applications, the control device may be unable to establish or maintain a communication connection with the load terminal due to reasons such as the physical disconnection of the DC interface, the control device can consider the load terminal to be in an abnormal disconnection state and can actively stop outputting the target voltage to it. That is, the power-down management method for the load terminal provided in this application embodiment also includes: If a communication connection with the aforementioned load terminal fails to be established, the aforementioned power adapter shall be notified to shut off the target voltage.

[0071] In this embodiment, the control device can determine whether its communication connection with the load terminal has failed based on a timeout mechanism. For example, if the control device does not receive a heartbeat response from the load terminal within a preset timeout period (or within N consecutive heartbeat cycles, where N is a natural number greater than 1), it determines that the communication connection with the load terminal has failed. The control device can also determine whether its communication connection with the load terminal has failed based on handshake failure detection (or physical layer signal detection). For example, if the control device sends a synchronization frame in the initial stage of communication establishment but does not receive an acknowledgment frame from the load terminal within a preset waiting time, it determines that the communication connection has failed.

[0072] In this embodiment of the application, if the control device fails to establish a communication connection with the load terminal, it determines that the load terminal is in an abnormal disconnection state. At this time, it can actively stop outputting the target voltage to it to avoid the safety risks caused by the inability to monitor the load status and continue to supply power.

[0073] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0074] Corresponding to the power-down management method for a load terminal described in the above embodiments, Figure 4 This diagram illustrates a structural block diagram of a load terminal power-off management device according to an embodiment of this application. For ease of explanation, only the parts related to the embodiment of this application are shown.

[0075] Reference Figure 4 The power-down management device 4 of the load terminal is applied to the load terminal, which is connected to the control device via a DC interface. The DC interface is equipped with first and second level unlocking devices. The power-down management device 4 of the load terminal includes: a power-off condition detection module 41, a power-off process execution module 42, and a first target message sending module 43. Wherein: The shutdown condition detection module 41 is used to detect whether the load terminal currently meets the preset shutdown conditions. The preset shutdown conditions include: the probe of the first and second level unlocking device is disconnected from the load terminal, and / or the probe of the first and second level unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of the main power supply contact at the DC interface.

[0076] The shutdown process execution module 42 is used to execute the shutdown process when the above-mentioned load terminal currently meets the above-mentioned preset shutdown conditions.

[0077] The first target message sending module 43 is used to send a first target message to the control device, wherein the first target message is used to instruct the load terminal to meet the preset shutdown conditions.

[0078] In this embodiment, it is detected whether the load terminal currently meets preset shutdown conditions. If the load terminal currently meets the preset shutdown conditions, a shutdown procedure is executed, and a first target message instructing the control device to meet the preset shutdown conditions is sent. The preset shutdown conditions include: the probe of the first secondary unlocking device is disconnected from the load terminal, and / or the probe of the first secondary unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of the main power supply contact at the DC interface. Because the probe of the first secondary unlocking device is shorter than the length of the main power supply contact at the DC interface, at the instant the probe is disconnected from the load terminal and / or from the control device, the main power supply contact remains connected. Therefore, the load terminal can still obtain power through the main power supply contact, and the obtained power is sufficient to support the load terminal in executing the shutdown procedure. That is, by using the disconnection of the probes of the first and second level unlocking devices (whose length is shorter than the length of the main power supply contact at the DC interface) from the load terminal as one of the shutdown conditions, and / or by using the disconnection of the probes of the first and second level unlocking devices from the control equipment as another shutdown condition, the shutdown process can be triggered promptly when the shutdown condition is met, thereby reducing the safety hazards and probability of damage to the load terminal during use. Simultaneously, by sending a first target message to the control equipment to indicate that the load terminal has met the preset shutdown condition, the control equipment can promptly know that the load terminal has met the shutdown condition, and thus collaboratively complete the safe power-off operation.

[0079] Optionally, the aforementioned shutdown condition detection module 41 is specifically used for: The external interrupt of the first and second level unlocking devices is detected. If it is triggered, the target pin is detected to be at the target level.

[0080] Correspondingly, the shutdown process execution module 42 mentioned above is specifically used for: If the target pin is at the target level, then the shutdown procedure is executed.

[0081] Optionally, the aforementioned preset shutdown conditions further include: the difference between the current voltage of the load terminal and the target voltage is greater than a preset difference threshold, and the target voltage is greater than a preset voltage threshold. The shutdown condition detection module 41 is specifically used for: The current voltage of the load terminal is detected by the microcontroller of the load terminal.

[0082] Correspondingly, the shutdown process execution module 42 mentioned above is specifically used for: If the difference between the current voltage and the target voltage at the aforementioned load terminal exceeds a preset difference threshold, a shutdown procedure is executed.

[0083] Optionally, the power-down management device 4 for the load terminal provided in this application embodiment further includes: Before detecting whether the load terminal currently meets the preset shutdown conditions, the detection condition is to check whether the load terminal currently meets the preset detection conditions, which include: the main function of the load terminal is activated.

[0084] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0085] Corresponding to the power-down management method for a load terminal applied to a control device described in the above embodiments, Figure 5 This diagram illustrates a structural block diagram of a load terminal power-off management device according to an embodiment of this application. For ease of explanation, only the parts related to the embodiment of this application are shown.

[0086] Reference Figure 5 The power-off management device 5 of the load terminal is applied to the control equipment, and the power-off management device 5 of the load terminal includes: The first target message receiving module 51 is used to receive the first target message sent by the load terminal, wherein the first target message is used to instruct the load terminal to meet the preset shutdown conditions.

[0087] The target voltage shutdown notification module 52 is used to notify the power adapter to shut off the target voltage, wherein the target voltage is greater than a preset voltage threshold.

[0088] In this embodiment, after receiving a first target message instructing the load terminal to meet preset shutdown conditions, the control device notifies the power adapter to shut down a target voltage exceeding a preset voltage threshold. Since meeting the preset shutdown conditions indicates that the load terminal no longer requires a higher voltage input from the control device, and higher voltage increases the probability of a major safety incident, the control device proactively notifies the power adapter to shut down the target voltage exceeding the preset threshold. This timely disconnection of high-voltage output reduces the risk of safety incidents caused by continuous high-voltage supply, lowers the probability of safety hazards and damage to the load terminal during use, reduces unnecessary energy consumption, and improves the overall safety and reliability of the system.

[0089] Optionally, the control device is connected to the load terminal via a DC interface, and a first and second level unlocking device is provided at the DC interface. The first target message includes a first flag of the first and second level unlocking device. The first target message receiving module 51 is specifically used for: The system receives a first flag from the first and second level unlocking devices sent by the load terminal. The first flag of the first and second level unlocking devices is used to indicate that the probe of the first and second level unlocking devices is disconnected from the load terminal, and / or to indicate that the probe of the first and second level unlocking devices is disconnected from the control device.

[0090] Optionally, the first target message includes a first flag of voltage, and the first target message receiving module 51 is specifically used for: The first voltage flag sent by the load terminal is received, and the first voltage flag is used to indicate that the difference between the current voltage of the load terminal and the target voltage is greater than a preset difference threshold.

[0091] Optionally, the power-down management device 5 for the load terminal provided in this embodiment further includes: If a communication connection with the aforementioned load terminal fails to be established, the aforementioned power adapter shall be notified to shut off the target voltage.

[0092] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0093] Figure 6 This is a schematic diagram of the power-off management system for a load terminal provided in an embodiment of this application. Figure 6 As shown, the power-down management system 6 of the load terminal in this embodiment includes: a load terminal 61, a control device 62, and a power adapter 63. The load terminal 61 and the control device 62 include at least one processor ( Figure 6 (Not shown) and at least one memory. The first computer program stored in the memory of the load terminal 61 can run on the processor included in the load terminal 61 to implement the steps in the various method embodiments corresponding to the power-down management method of the load terminal applied to the load terminal described above. The second computer program stored in the memory of the control device 62 can run on the processor included in the control device 62 to implement the steps in the various method embodiments corresponding to the power-down management method of the load terminal applied to the control device described above.

[0094] Optionally, the power adapter 63 is connected to the control device 62 via an AC interface, and a second / secondary unlocking device is provided at the AC interface. The power adapter 63 is also used for: The detection device detects whether the probe of the second-level unlocking device is disconnected from the load terminal 61, and / or detects whether the probe of the second-level unlocking device is disconnected from the control device 62.

[0095] If the probe of the second-level unlocking device is detected to be disconnected from the load terminal 61 and / or from the control device 62, the target voltage is actively shut off.

[0096] The probe of the aforementioned second-level unlocking device is shorter than the length of the main power supply contact at the AC interface.

[0097] In this embodiment, the power adapter 63 can detect whether it meets the power-off condition based on the level change caused by the probe being disconnected. Of course, it can also be detected by utilizing the principle that the impedance of the detection circuit between the probe and the corresponding contact on the other end suddenly becomes infinite when the connection is broken. This is not limited here.

[0098] Those skilled in the art will understand that Figure 6 This is merely an example of the power-down management system 6 for the load terminal and does not constitute a limitation on the power-down management system 6 for the load terminal. It may include more or fewer components than shown in the figure, or combine certain components, or different components, such as input / output devices, network access devices, etc.

[0099] The processor referred to can be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0100] In some embodiments, the memory may be an internal storage unit of the power-off management system 6 of the load terminal, such as a hard disk or memory of the power-off management system 6 of the load terminal. In other embodiments, the memory may be an external storage device of the power-off management system 6 of the load terminal, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the power-off management system 6 of the load terminal. Further, the memory may include both internal storage units of the power-off management system 6 of the load terminal and external storage devices. The memory is used to store the operating system, applications, bootloader, data, and other programs, such as the program code of the computer program. The memory can also be used to temporarily store data that has been output or will be output.

[0101] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0102] This application also provides a network device, which includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor executes the computer program to implement the steps in any of the above method embodiments.

[0103] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the steps in the above-described method embodiments.

[0104] This application provides a computer program product that, when running on the power-off management system of a load terminal, enables the electronic device to implement the steps described in the various method embodiments.

[0105] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a photographic device / electronic device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0106] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0107] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0108] In the embodiments provided in this application, it should be understood that the disclosed apparatus / network devices and methods can be implemented in other ways. For example, the apparatus / network device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0109] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

Claims

1. A power-down management method for a load terminal, characterized in that, Applied to a load terminal, the load terminal is connected to a control device via a DC interface, and the DC interface is equipped with first and second level unlocking devices. The power-down management method of the load terminal includes: Detect whether the load terminal currently meets the preset shutdown conditions. The preset shutdown conditions include: the probe of the first secondary unlocking device is disconnected from the load terminal, and / or the probe of the first secondary unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of the main power supply contact at the DC interface. If the load terminal currently meets the preset shutdown conditions, execute the shutdown procedure; A first target message is sent to the control device, the first target message being used to instruct the load terminal to meet preset shutdown conditions.

2. The power-down management method for a load terminal as described in claim 1, characterized in that, The step of detecting whether the load terminal currently meets the preset shutdown conditions includes: Detect whether the external interrupt of the first secondary unlocking device is triggered; if it is triggered, detect whether the target pin is at the target level. The step of executing a shutdown procedure when the load terminal currently meets the preset shutdown conditions includes: If the target pin is at the target level, then the shutdown procedure is executed.

3. The power-down management method for a load terminal as described in claim 1, characterized in that, The preset shutdown condition further includes: the difference between the current voltage of the load terminal and the target voltage is greater than a preset difference threshold, wherein the target voltage is greater than a preset voltage threshold, and detecting whether the load terminal currently meets the preset shutdown condition includes: The current voltage of the load terminal is detected by the microcontroller of the load terminal; The step of executing a shutdown procedure when the load terminal currently meets the preset shutdown conditions includes: If the difference between the current voltage and the target voltage at the load terminal is greater than a preset difference threshold, a shutdown procedure is executed.

4. The power-down management method for a load terminal as described in any one of claims 1 to 3, characterized in that, Before detecting whether the load terminal currently meets the preset shutdown conditions, the method further includes: The system detects whether the load terminal currently meets preset detection conditions, including that the main function of the load terminal is activated.

5. A power-down management method for a load terminal, characterized in that, The power-down management method for the load terminal, applied to control equipment, includes: The control device receives a first target message sent by the load terminal, the first target message being used to indicate that the load terminal meets preset shutdown conditions. The control device is connected to the load terminal via a DC interface, and a first and second level unlocking device is provided at the DC interface. The length of the probe of the first and second level unlocking device is shorter than the length of the main power supply contact at the DC interface. The shutdown conditions include: the probe of the first and second level unlocking device is disconnected from the load terminal, and / or the probe of the first and second level unlocking device is disconnected from the control device. The power adapter is notified to turn off the target voltage, wherein the target voltage is greater than a preset voltage threshold.

6. The power-down management method for a load terminal as described in claim 5, characterized in that, The first target message includes a first flag of the first secondary unlocking device, and receiving the first target message sent by the load terminal includes: The system receives a first flag from the first secondary unlocking device sent by the load terminal. The first flag of the first secondary unlocking device is used to indicate that the probe of the first secondary unlocking device is disconnected from the load terminal, and / or to indicate that the probe of the first secondary unlocking device is disconnected from the control device.

7. The power-off management method for a load terminal as described in claim 5, characterized in that, The first target message includes a first flag of voltage, and receiving the first target message sent by the load terminal includes: The system receives a first voltage flag sent by the load terminal, the first voltage flag indicating that the difference between the current voltage of the load terminal and the target voltage is greater than a preset difference threshold.

8. The power-down management method for a load terminal as described in claim 5, characterized in that, The power-down management method for the load terminal also includes: If a communication connection with the load terminal fails to be established, the power adapter is notified to shut off the target voltage.

9. A power-off management device for a load terminal, characterized in that, Applied to a load terminal, the load terminal is connected to a control device via a DC interface, and the DC interface is equipped with first and second level unlocking devices. The power-down management device of the load terminal includes: A shutdown condition detection module is used to detect whether the load terminal currently meets preset shutdown conditions. The preset shutdown conditions include: the probe of the first secondary unlocking device is disconnected from the load terminal, and / or the probe of the first secondary unlocking device is disconnected from the control device, and the length of the probe is shorter than the length of the main power supply contact at the DC interface. The shutdown process execution module is used to execute the shutdown process when the load terminal currently meets the preset shutdown conditions; The first target message sending module is used to send a first target message to the control device, wherein the first target message is used to instruct the load terminal to meet the preset shutdown conditions.

10. A power-off management device for a load terminal, characterized in that, The power-off management device for the load terminal, applied to control equipment, includes: A first target message receiving module is used to receive a first target message sent by the load terminal. The first target message is used to indicate that the load terminal meets preset shutdown conditions. The control device is connected to the load terminal through a DC interface, and a first and second level unlocking device is provided at the DC interface. The length of the probe of the first and second level unlocking device is shorter than the length of the main power supply contact at the DC interface. The shutdown conditions include: the probe of the first and second level unlocking device is disconnected from the load terminal, and / or the probe of the first and second level unlocking device is disconnected from the control device. The target voltage shutdown notification module is used to notify the power adapter to shut off the target voltage, wherein the target voltage is greater than a preset voltage threshold.

11. A power-off management system for a load terminal, characterized in that, The method includes a load terminal, a control device, a power adapter, a first computer program stored in the memory of the load terminal and executable on the processor of the load terminal, and a second computer program stored in the memory of the control device and executable on the processor of the control device. When the processor of the load terminal executes the first computer program, it implements the method as described in any one of claims 1 to 4. When the processor of the control device executes the second computer program, it implements the method as described in any one of claims 5 to 8.

12. The power-off management system for the load terminal as described in claim 11, characterized in that, The power adapter is connected to the control device via an AC interface, and a second / secondary unlocking device is provided at the AC interface. The power adapter is also used for: Detect whether the probe of the second secondary unlocking device is disconnected from the load terminal, and / or detect whether the probe of the second secondary unlocking device is disconnected from the control device; If the probe of the second secondary unlocking device is detected to be disconnected from the load terminal and / or from the control device, the target voltage is actively shut off.

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