Surge suppression method, apparatus, aircraft, and medium

Abstract

The application relates to the technical field of surge suppression, and discloses a surge suppression method, a device, an aircraft and a medium, the method comprising the following steps: polling a state register of a high-low side switch of a target vehicle to obtain polling information; diagnosing the polling information according to a timing configuration file to obtain a diagnosis result; when the diagnosis result is normal and conforms to a power supply strategy of a current mode of the target vehicle, generating a driving signal according to an impact current and a load capacitance value in the polling information; and performing a power-on operation on a load device according to the driving signal to suppress a surge current in a power-on process through the driving signal. In the application, the driving signal is generated through the impact current and the load capacitance value, active suppression of the surge is realized, the surge current impact is avoided from the source, the stress of a switching device caused by the current surge is reduced, and the service life of the device caused by the current surge is prolonged.

Description

Technical Field

[0001] This invention relates to the field of surge suppression technology, and more particularly to a surge suppression method, apparatus, aircraft, and medium. Background Technology

[0002] As automotive and avionics systems become increasingly complex, the number of internal power supplies is constantly increasing, placing extremely high demands on the timing control of power-on and power-off and surge current suppression. Improper timing or excessive surge current can lead to chip malfunctions, data loss, or even hardware damage. Traditional solutions mainly rely on hardware circuits: using RC delay circuits to determine timing, or using components such as fuses and negative temperature coefficient thermistors (PTCs) for overcurrent protection. However, these hardware solutions are typically reactive and lack flexibility. Therefore, a surge suppression method is urgently needed to address these problems. Summary of the Invention

[0003] This invention provides a surge suppression method, apparatus, aircraft, and medium to improve the hardware circuitry of existing surge suppression schemes, addressing the technical problem of passive response and poor flexibility.

[0004] A surge suppression method includes: Poll the status register of the high and low side switches of the target vehicle to obtain polling information; The diagnostic results are obtained by diagnosing the polling information based on the timing configuration file; When the diagnostic results are normal and the power supply strategy is consistent with the current mode of the target vehicle, a drive signal is generated based on the inrush current and load capacitance value in the polling information. The load device is powered on according to the drive signal to suppress surge current during the power-on process.

[0005] A surge suppression device, comprising: The information polling module is used to poll the status register of the high and low side switches of the target vehicle to obtain polling information; The information diagnosis module is used to diagnose the polling information based on the time-series configuration file and obtain the diagnosis results; The signal generation module is used to generate a drive signal based on the inrush current and load capacitance value in the polling information when the diagnostic result is normal and conforms to the power supply strategy of the target vehicle's current mode. The surge suppression module is used to perform a power-on operation on the load device according to the drive signal, so as to suppress surge current through the drive signal during the power-on process.

[0006] An aircraft includes a controller and a memory, wherein, Memory, used to store computer programs; The controller is used to execute the program stored in the memory to implement the surge suppression method described above.

[0007] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the surge suppression method described above.

[0008] The surge suppression method, apparatus, aircraft, and medium described above, in this invention, utilizes a polling status register to read high- and low-side switch information, thereby determining the polling information. A timing configuration file is used to diagnose whether the polling information is normal, thus determining whether the polling information conforms to the power supply strategy. The generation of the drive signal is achieved through the inrush current and load capacitance values, thereby actively suppressing surges. This avoids surge current impacts at the source, reduces the stress of current surges on switching devices, and prevents reduced device lifespan due to current surges. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a flowchart of a surge suppression method in one embodiment of the present invention; Figure 2 This is a flowchart of step S30 of the surge suppression method in one embodiment of the present invention; Figure 3 This is a schematic diagram of a surge suppression device in one embodiment of the present invention. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] It should be understood that, when used in this 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 collections thereof.

[0013] It should also be understood that the term “and / or” as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0014] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0015] Furthermore, in the description of this invention and the appended claims, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0016] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of the invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, phrases such as "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. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0017] In one embodiment, such as Figure 1 As shown, a surge suppression method is provided, comprising the following steps: S10: Poll the status register of the high and low side switches of the target vehicle to obtain polling information.

[0018] Understandably, the target vehicle refers to the equipment where the high-side and low-side switches are located, such as automotive and aerospace equipment. High-side and low-side switches are semiconductor power switching devices that integrate driving, protection (overcurrent, overtemperature, short circuit), and diagnostic functions. The high-side switch is located between the power supply and the load; the low-side switch is located between the load and ground. A status register stores the result status information of the current calculation or operation. Polling information refers to relevant information read from the status register, including but not limited to whether the load is short-circuited to ground / power supply, over-temperature alarm, or open-circuit load.

[0019] Specifically, before powering on the high and low side switches, the main controller polls the status registers of the high and low side switches via a communication bus (such as I2C, SPI, or automotive / aviation dedicated bus) to read information about the relevant devices and thus obtain polling information.

[0020] S20, diagnose the polling information according to the timing configuration file and obtain the diagnosis result.

[0021] Understandably, a timing profile is a pre-defined parameter file used to suppress surges. Diagnostic results are used to assess whether polling information is normal and conforms to the power supply strategy.

[0022] Specifically, a preset timing configuration file is obtained, and then the polling information is diagnosed through the timing configuration file. That is, the parameters in the polling information are detected through the data in the timing configuration file to determine whether the parameters in the polling information are normal and whether the parameters in the polling information conform to the power supply strategy of the current mode, so as to obtain the diagnostic results.

[0023] S30, when the diagnostic result is normal and conforms to the power supply strategy of the target vehicle's current mode, a drive signal is generated based on the inrush current and load capacitance value in the polling information.

[0024] Understandably, "current mode" refers to the driving mode of the target vehicle, such as car driving mode, aircraft flight phase, etc. Inrush current refers to the peak current flowing into the device at the instant the power is switched on. In this embodiment, inrush current refers to the maximum permissible inrush current of the load device, that is, the maximum instantaneous current generated at the instant of a circuit change (such as closing the circuit or short circuit) due to the inductance hindering the current change and the influence of the system voltage phase. Load capacitance value refers to the capacitance of the capacitor element in the load device. Drive signal refers to the voltage used to drive the load device.

[0025] Specifically, when the diagnostic results are normal and the power supply strategy conforms to the current mode of the target vehicle, the inrush current and load capacitance values ​​of the load device are obtained from the polling information. Then, the voltage ramp-up slope during power-up is set using the inrush current and load capacitance values. Next, the main controller uses PWM (Pulse Width Modulation) or DAC (Digital-to-Analog Converter, a device that converts digital quantities into analog quantities) to generate a drive signal that conforms to the voltage ramp-up slope.

[0026] In another embodiment, when the diagnostic result is abnormal and / or does not conform to the power supply strategy of the target vehicle's current mode, an error code is recorded, the path is skipped, and an alarm is sent to the upper-level system (such as the vehicle controller or avionics integrated management system) according to a preset strategy.

[0027] S40, perform a power-on operation on the load device according to the drive signal, so as to suppress surge current through the drive signal during the power-on process.

[0028] Understandably, a load device refers to a device or component that converts electrical energy into other forms of energy; it is a terminal device in a circuit that receives power from a power source.

[0029] Specifically, the load device is powered on according to the drive signal. That is, during the power-on process, the surge current is suppressed by the drive signal, that is, the output voltage of the high and low side switches is controlled to gradually increase from zero to the target voltage value, so as to smoothly charge the load device and drive the load device.

[0030] In this embodiment, the surge suppression method reads high-side and low-side switch information by polling the status register, thereby determining the polling information. A timing configuration file diagnoses whether the polling information is normal, thus determining whether the polling information conforms to the power supply strategy. The generation of the drive signal is achieved by using the inrush current and load capacitance values, thereby actively suppressing the surge. This avoids surge current impacts at the source, reduces the stress of current surges on switching devices, and prevents reduced device lifespan due to current surges.

[0031] In one embodiment, such as Figure 2 As shown, in step S30, that is, generating a drive signal based on the inrush current and load capacitance values ​​in the polling information, the following steps are included: S301, determine the voltage ramp-up slope based on the inrush current and load capacitance value of the load device.

[0032] S302, pulse width modulation is used to generate the drive signal, which is a voltage that gradually increases to the target voltage value with a voltage ramp slope.

[0033] Understandably, voltage ramp rate refers to the slope at which the output voltage rises from zero to the target voltage value within a certain time range. The drive signal is a voltage that gradually increases to the target voltage value at the voltage ramp rate.

[0034] Specifically, the inrush current and load capacitance values ​​of the load device are obtained from the polling information. Then, based on the inrush current and load capacitance values, the voltage ramp-up time is set. For example, if the load capacitance is 1000 μF (µF) and the inrush current is 15 A (amp), the voltage ramp-up time is 5 milliseconds; if the load capacitance is 5000 μF (µF) and the inrush current is 30 A (amp), the voltage ramp-up time is 15 milliseconds. Next, the target voltage value of the load device is obtained, and the ratio of the target voltage value to the voltage ramp-up time is calculated, thereby calculating the voltage ramp-up slope corresponding to that load device. Then, the main controller uses pulse width modulation to generate a drive signal that starts from zero and gradually increases to the target voltage value with a voltage ramp-up slope (dV / dt).

[0035] In this embodiment, the voltage ramp-up slope is set by using the inrush current and load capacitance value, thereby enabling the generation of the drive signal, active suppression of surges, and thus avoiding surge current impacts from the source, reducing the stress of current surges on switching devices.

[0036] In one embodiment, after step S40, that is, after performing a power-on operation on the load device according to the drive signal to suppress surge current during the power-on process, the method further includes: S501, after the high-low side switch is turned on, acquire the operating data of the high-low side switch.

[0037] S502, when the running data is abnormal, perform an abnormal response operation according to the hierarchical response mechanism.

[0038] Understandably, operational data refers to data generated during device operation, including but not limited to load current and output voltage, and in one embodiment, temperature. The tiered response mechanism includes different threshold levels and their corresponding anomaly response actions.

[0039] Specifically, after the high-side and low-side switches are turned on, the main controller periodically reads the load current and output voltage fed back from the switches. Then, it obtains the threshold values ​​from the hierarchical response mechanism and compares the load current and output voltage in the operating data with their corresponding threshold values. If at least one parameter exceeds the corresponding threshold, an anomaly is determined in the operating data. Next, the anomaly response operation corresponding to the threshold value in the hierarchical response mechanism is executed, and the corresponding anomaly response operation for the operating data is performed.

[0040] In this embodiment, by monitoring the operating data of the high and low side switches in real time, real-time monitoring of the equipment is achieved, enabling timely handling of faults and preventing accidents from occurring.

[0041] In one embodiment, step S502, that is, when the running data is abnormal, performs an anomaly response operation according to the hierarchical response mechanism, including: S5021, when the load current in the operating data is greater than the first current threshold in the graded response mechanism, and / or the output voltage in the operating data is greater than the first voltage threshold in the graded response mechanism, the abnormal response operation is determined to be adjusting the duty cycle of the pulse width modulation to reduce the output voltage.

[0042] S5022, when the load current in the operating data is greater than the second current threshold in the graded response mechanism, and / or the output voltage in the operating data is greater than the second voltage threshold in the graded response mechanism, the abnormal response operation is determined to be shutting down the high-side and low-side switches; wherein, the second current threshold is greater than the first current threshold, and the second voltage threshold is greater than the first voltage threshold.

[0043] Understandably, the first current threshold refers to the first-level current threshold in the graded response mechanism. The second current threshold refers to the second-level current threshold in the graded response mechanism. The second current threshold is greater than the first current threshold. Similarly, the first voltage threshold refers to the first-level voltage threshold in the graded response mechanism. The second voltage threshold refers to the second-level voltage threshold in the graded response mechanism. The second voltage threshold is greater than the first voltage threshold. The duty cycle of pulse width modulation (PWM) refers to the ratio of the high-level (i.e., pulse width) time to the total cycle time within one pulse period. The output voltage refers to the voltage value supplied by the high-side and low-side switch outputs to the external load.

[0044] Specifically, the first current threshold and the first voltage threshold in the graded response mechanism are obtained, and the load current in the operating data is compared with the first current threshold, and the output voltage in the operating data is compared with the first voltage threshold. When the load current in the operating data is greater than the first current threshold in the graded response mechanism, and / or the output voltage in the operating data is greater than the first voltage threshold in the graded response mechanism, the abnormal response operation is determined to be adjusting the duty cycle of the pulse width modulation to reduce the output voltage, that is, reducing the duty cycle of the pulse width modulation to reduce the output voltage.

[0045] In one embodiment, when the load current is greater than the first current threshold in the graded response mechanism, it is determined whether the load current is greater than the second current threshold in the graded response mechanism. When the load current is less than or equal to the second current threshold, and / or the output voltage is greater than the first voltage threshold and less than or equal to the second voltage threshold in the graded response mechanism, the abnormal response operation is determined to be adjusting the duty cycle of the pulse width modulation to reduce the output voltage.

[0046] Similarly, the second current threshold and the second voltage threshold in the graded response mechanism are obtained, and the load current and the second current threshold in the operating data are compared, as are the output voltage and the second voltage threshold in the operating data. When the load current in the operating data is greater than the second current threshold in the graded response mechanism, and / or the output voltage in the operating data is greater than the second voltage threshold in the graded response mechanism, the abnormal response operation is determined to be shutting off the high-side and low-side switches. Specifically, when the load current exceeds the first-level threshold, it is determined whether it exceeds the second-level threshold, thereby determining the abnormal response operation. In one embodiment, different response levels can be defined according to actual conditions, and different level thresholds can be set.

[0047] In this embodiment, the abnormal response operation corresponding to the first graded response is determined by using the first current threshold and the first voltage threshold. Then, by adjusting the duty cycle of the pulse width modulation, the output voltage is reduced, achieving derating operation and preventing the switch from being turned off. The abnormal response operation corresponding to the second graded response is determined by using the second current threshold and the second voltage threshold. Then, by turning off the high-side and low-side switches, an accident is prevented.

[0048] In one embodiment, step S502, that is, when the running data is abnormal, performing an anomaly response operation according to the hierarchical response mechanism, further includes: S5023, when the operating data is abnormal, if the load device corresponding to the high-low side switch is a critical device and there is a redundant power path in the low-voltage power distribution system, then the abnormal response operation is determined to be to perform a redundant power path switching operation.

[0049] Understandably, critical equipment refers to equipment or components that play a core role in the stable operation, functional realization, and safety assurance of the entire system, and are irreplaceable or have extremely high replacement costs, such as the brake controller in automobiles or the flight control computer in aviation. Low-voltage power distribution systems refer to electrical systems with rated voltage levels of 1kV and below, used to distribute electrical energy from low-voltage power sources to various electrical devices. Redundant power paths refer to backup power supply paths additionally configured for critical equipment or systems. Their core purpose is to automatically or manually switch to the backup path to ensure uninterrupted system operation when the main power path fails (such as a line break, power module damage, or voltage abnormality).

[0050] Specifically, if the load current is overloaded or underloaded, and / or the output voltage is overloaded or underloaded in the operating data, an anomaly is identified in the operating data. Then, it is checked whether the load device corresponding to the high-side / low-side switch is a critical device, and whether redundant power paths exist. If the load device is not a critical device, and / or there are no redundant power paths, the anomaly response is determined to be shutting down the high-side / low-side switch. If the load device corresponding to the high-side / low-side switch is a critical device, and redundant power paths exist in the low-voltage power distribution system, the anomaly response is determined to be performing a redundant power path switching operation.

[0051] In this embodiment, when abnormal operating data occurs, the redundant power supply path is switched to ensure that the low-voltage power distribution system operates without interruption, thereby avoiding accidents caused by system interruption.

[0052] In one embodiment, after step S40, that is, after performing an anomaly response operation according to the hierarchical response mechanism when the running data is abnormal, the method further includes: S60, when the low-voltage power distribution system is powered down, the high-low side switch is powered down according to the voltage drop slope.

[0053] Understandably, voltage drop slope refers to the slope by which the output voltage in a low-voltage distribution system drops from the target voltage value to zero within a certain time range.

[0054] Specifically, when the low-voltage power distribution system needs to be powered down, the voltage drop slope is obtained, and based on the voltage drop slope, the output voltage of the high and low side switches is controlled to gradually decrease from the target voltage value to zero in order to complete the power-down operation.

[0055] In this embodiment, the voltage drop slope enables the execution of the switch power-off operation, thereby turning off the high and low side switches and avoiding voltage backflow and current reverse flow.

[0056] In one embodiment, before step S10, that is, before polling the status register of the high and low side switches of the target vehicle to obtain polling information, the method further includes: S101: After the low-voltage power distribution system is powered on, a timing configuration file is obtained from the non-volatile memory. The timing configuration file includes the enable timing, delay, voltage ramp-up slope, current protection threshold, voltage protection threshold, communication protocol configuration, and fault handling strategy for each channel.

[0057] Understandably, timing profiles include, but are not limited to, enable timings, delays, voltage ramp rates, current protection thresholds, voltage protection thresholds, communication protocol configurations (for automotive (e.g., CAN bus signals) or aerospace (e.g., ARINC429 bus signals)) and fault handling strategies (e.g., processing flows required by ASIL-D or DAL-C). These parameters are pre-set based on target domain standards, load electrical characteristics, and system safety level requirements. Non-volatile memory refers to memory whose stored data does not disappear when the current is turned off. Specifically, after the low-voltage power distribution system is powered on, the main controller retrieves the timing profile from the non-volatile memory.

[0058] In this embodiment, the timing configuration file enables adaptation to different load requirements and system changes, achieving a leap from fixed functions to adaptive intelligent management, thereby meeting the high safety integrity level requirements of the automotive and aviation fields.

[0059] 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 the present invention.

[0060] In one embodiment, a surge suppression device is provided, which corresponds one-to-one with the surge suppression methods described in the above embodiments. For example... Figure 3 As shown, the surge suppression device includes an information polling module 10, an information diagnosis module 20, a signal generation module 30, and a surge suppression module 40. Detailed descriptions of each functional module are as follows: Information polling module 10 is used to poll the status register of the high and low side switches of the target vehicle to obtain polling information; Information diagnosis module 20 is used to diagnose the polling information according to the time sequence configuration file and obtain the diagnosis result; The signal generation module 30 is used to generate a drive signal based on the inrush current and load capacitance value in the polling information when the diagnostic result is normal and conforms to the power supply strategy of the current mode of the target vehicle. The surge suppression module 40 is used to perform a power-on operation on the load device according to the drive signal, so as to suppress surge current through the drive signal during the power-on process.

[0061] In one embodiment, the signal generation module 30 further includes: The ramp rate unit is used to determine the voltage ramp rate based on the inrush current and load capacitance value of the load device. The signal generation unit is used to generate the driving signal by pulse width modulation, wherein the driving signal is a voltage that gradually increases to a target voltage value with a voltage ramp slope.

[0062] In one embodiment, the device further includes: The operation data module is used to acquire the operation data of the high and low side switches after the high and low side switches are turned on. The exception handling module is used to perform exception handling operations according to the hierarchical response mechanism when the running data is abnormal.

[0063] In one embodiment, the anomaly handling module includes: A duty cycle adjustment unit is used to determine that the abnormal response operation is to adjust the duty cycle of the pulse width modulation to reduce the output voltage when the load current in the operating data is greater than the first current threshold in the graded response mechanism and / or the output voltage in the operating data is greater than the first voltage threshold in the graded response mechanism. A switch-off unit is configured to determine that the abnormal response operation is to shut down the high-side and low-side switches when the load current in the operating data is greater than the second current threshold in the graded response mechanism, and / or the output voltage in the operating data is greater than the second voltage threshold in the graded response mechanism; wherein the second current threshold is greater than the first current threshold, and the second voltage threshold is greater than the first voltage threshold.

[0064] In one embodiment, the anomaly handling module further includes: The path switching unit is used to determine that the abnormal response operation is to perform a redundant power path switching operation when the operating data is abnormal, if the load device corresponding to the high-low side switch is a critical device and there is a redundant power path in the low-voltage power distribution system.

[0065] In one embodiment, the device further includes: The power-down operation module is used to perform a power-down operation on the high-low side switch according to the voltage drop slope when the low-voltage power distribution system is powered down.

[0066] In one embodiment, the device further includes: The timing configuration file module is used to retrieve the timing configuration file from the non-volatile memory after the low-voltage power distribution system is powered on. The timing configuration file includes the enable timing, delay, voltage ramp-up slope, current protection threshold, voltage protection threshold, communication protocol configuration, and fault handling strategy for each channel.

[0067] An aircraft includes a controller and a memory, wherein, Memory, used to store computer programs; The controller is used to execute the program stored in the memory to implement the surge suppression method described above.

[0068] Specific limitations regarding the aircraft, processor, and their individual units and modules can be found in the limitations of the surge suppression method described above, and will not be repeated here. Each module in the aforementioned processor can be implemented entirely or partially through software, hardware, or a combination thereof. Understandably, the processor includes a processor, memory, network interface, and database connected via a device bus. Each module of the processor can be embedded in hardware or independent of the processor, or stored in memory as software, so that the processor can call and execute the operations corresponding to each module. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores operating devices, computer programs, and a database. The internal memory provides an environment for the operation of the operating devices and computer programs in the non-volatile storage media. The database stores the data used in the surge suppression method described in the above embodiments. The network interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a surge suppression method.

[0069] In one embodiment, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program that, when executed by a processor, implements the surge suppression method described above.

[0070] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0071] 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 used as 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.

[0072] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A surge suppression method, characterized in that, include: Poll the status register of the high and low side switches of the target vehicle to obtain polling information; The diagnostic results are obtained by diagnosing the polling information based on the timing configuration file; When the diagnostic results are normal and the power supply strategy is consistent with the current mode of the target vehicle, a drive signal is generated based on the inrush current and load capacitance value in the polling information. The load device is powered on according to the drive signal to suppress surge current during the power-on process.

2. The surge suppression method as described in claim 1, characterized in that, The step of generating a drive signal based on the inrush current and load capacitance values ​​in the polling information includes: The voltage ramp-up slope is determined based on the inrush current and load capacitance of the load device. The driving signal is generated by pulse width modulation, and the driving signal is a voltage that gradually increases to the target voltage value with a voltage ramp slope.

3. The surge suppression method as described in claim 1, characterized in that, After performing a power-on operation on the load device according to the drive signal to suppress surge current during the power-on process, the method further includes: After the high-low side switch is turned on, the operating data of the high-low side switch is acquired; When the operational data is abnormal, an anomaly response operation is performed according to the hierarchical response mechanism.

4. The surge suppression method as described in claim 3, characterized in that, When the operating data becomes abnormal, an anomaly response mechanism is used to perform an anomaly handling operation, including: When the load current in the operating data is greater than the first current threshold in the graded response mechanism, and / or the output voltage in the operating data is greater than the first voltage threshold in the graded response mechanism, the abnormal response operation is determined to be adjusting the duty cycle of the pulse width modulation to reduce the output voltage. When the load current in the operating data is greater than the second current threshold in the graded response mechanism, and / or the output voltage in the operating data is greater than the second voltage threshold in the graded response mechanism, the abnormal response operation is determined to be shutting down the high-side and low-side switches; wherein, the second current threshold is greater than the first current threshold, and the second voltage threshold is greater than the first voltage threshold.

5. The surge suppression method as described in claim 3, characterized in that, The step of performing anomaly response operations according to the hierarchical response mechanism when the operating data is abnormal also includes: When the operating data is abnormal, if the load device corresponding to the high-low side switch is a critical device and there is a redundant power path in the low-voltage power distribution system, then the abnormal response operation is determined to be to perform a redundant power path switching operation.

6. The surge suppression method as described in claim 1, characterized in that, After performing a power-on operation on the load device according to the drive signal to suppress surge current during the power-on process, the method further includes: When the low-voltage power distribution system is powered off, the high-low side switch is powered off according to the voltage drop slope.

7. The surge suppression method as described in claim 1, characterized in that, Before obtaining polling information from the status register of the high and low side switches of the target vehicle, the method further includes: After the low-voltage power distribution system is powered on, a timing configuration file is retrieved from the non-volatile memory. The timing configuration file includes the enable timing, delay, voltage ramp-up slope, current protection threshold, voltage protection threshold, communication protocol configuration, and fault handling strategy for each channel.

8. A surge suppression device, characterized in that, include: The information polling module is used to poll the status registers of the high and low side switches of the target vehicle to obtain polling information. The information diagnosis module is used to diagnose the polling information based on the time-series configuration file and obtain the diagnosis results; The signal generation module is used to generate a drive signal based on the inrush current and load capacitance value in the polling information when the diagnostic result is normal and conforms to the power supply strategy of the current mode of the target vehicle. The surge suppression module is used to perform a power-on operation on the load device according to the drive signal, so as to suppress surge current through the drive signal during the power-on process.

9. An aircraft, characterized in that, Includes controller and memory, among which, Memory, used to store computer programs; A controller for executing a program stored in a memory to implement the surge suppression method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the surge suppression method as described in any one of claims 1 to 7.

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