Redundant power supply circuit failure detection method, vehicle-mounted terminal and storage medium

Abstract

The invention provides a redundant power supply circuit failure detection method, a vehicle-mounted terminal and a storage medium, and relates to the technical field of power supply detection, in redundant power supply circuits, each power supply circuit comprises an electronic fuse and an anti-backflow circuit which are connected in series, and the method comprises the steps that the power supply circuits in the redundant power supply circuits are controlled to be in an on state; acquiring a first voltage of an input end of an electronic fuse in a target power supply circuit in the redundant power supply circuit, a second voltage of an output end of the electronic fuse, a current of the electronic fuse and an output voltage of the redundant power supply circuit; and detecting that one or more values in the first voltage, the second voltage, the current and the output voltage are abnormal, and determining a failure detection result of the target power supply circuit based on the abnormality. According to the application, any one power supply circuit in the redundant power supply circuits can be used as the target power supply circuit, and whether any one power supply circuit in the redundant circuits fails or not can be identified.

Description

Technical Field

[0001] The present application relates to the field of power supply detection technology, and in particular to a redundant power supply circuit failure detection method, a vehicle-mounted terminal and a storage medium. Background Art

[0002] The redundant power supply for vehicle computers is designed to ensure that vehicle-mounted electronic products (such as vehicle-mounted infotainment systems, navigation systems, ADAS advanced driver assistance systems, etc.) can still work normally in the event of power failure or abnormal conditions. The redundant power supply system improves the reliability and stability of the system by providing multiple independent power paths. However, in the redundant power supply scenario for vehicle-mounted electronic products, since the vehicle-mounted electronic products are powered by redundant power supplies, that is, the power input is greater than or equal to two channels, no matter which power supply fails, the vehicle-mounted electronic products can continue to work normally, resulting in the inability to identify whether a certain power supply has failed from the appearance. Summary of the invention

[0003] Embodiments of the present application provide a redundant power supply circuit failure detection method, a vehicle-mounted terminal, and a storage medium to solve one or more of the above-mentioned technical problems.

[0004] In a first aspect, an embodiment of the present application provides a method for detecting failure of a redundant power supply circuit, wherein the redundant power supply circuit includes an electronic fuse and an anti-backflow circuit connected in series, and the method includes: controlling the power supply circuit in the redundant power supply circuit to be in a conductive state; obtaining a first voltage at an input end of the electronic fuse in a target power supply circuit in the redundant power supply circuit, a second voltage at an output end, a current of the electronic fuse, and an output voltage of the redundant power supply circuit; detecting that one or more values ​​of the first voltage, the second voltage, the current, and the output voltage are abnormal, and determining a failure detection result of the target power supply circuit based on the abnormality.

[0005] In a second aspect, an embodiment of the present application provides a vehicle-mounted terminal, comprising a memory, a processor, and a computer program stored in the memory, wherein the processor implements any of the methods described above when executing the computer program.

[0006] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, any of the methods described above is implemented.

[0007] In a fourth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a computer program, and when the computer program is executed by a processor, it implements any of the methods described above.

[0008] Compared with the related art, this application has the following advantages:

[0009] The embodiment of the present application provides a method for detecting failure of a redundant power supply circuit, in which each power supply circuit includes an electronic fuse and an anti-backflow circuit connected in series, and the method includes: controlling the power supply circuit in the redundant power supply circuit to be in a pass state; obtaining the first voltage at the input end of the electronic fuse in the target power supply circuit in the redundant power supply circuit, the second voltage at the output end, the current of the electronic fuse, and the output voltage of the redundant power supply circuit; detecting that one or more values ​​of the first voltage, the second voltage, the current, and the output voltage are abnormal, and determining the failure detection result of the target power supply circuit based on the abnormality. According to the embodiment of the present application, any power supply circuit in the redundant power supply circuit can be used as the target power supply circuit to identify whether the target power supply circuit in the redundant circuit has failed.

[0010] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present application and should not be regarded as limiting the scope of the present application.

[0012] Figure 1 A flow chart of a redundant power supply circuit failure detection method provided in an embodiment of the present application is shown;

[0013] Figure 2 A schematic diagram of redundant power supply failure detection provided in an embodiment of the present application is shown;

[0014] Figure 3 A structural block diagram of a redundant power supply circuit failure detection device provided in an embodiment of the present application is shown;

[0015] Figure 4 A block diagram of a vehicle-mounted terminal used to implement an embodiment of the present application is shown. DETAILED DESCRIPTION

[0016] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the concept or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary in nature and not restrictive.

[0017] To facilitate understanding of the technical solutions of the embodiments of the present application, the following describes the related technologies of the embodiments of the present application. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application.

[0018] First, the terms involved are explained.

[0019] MCU: Microcontroller Unit, microcontroller unit, also known as single-chip microcomputer (Single Chip Microcomputer) or single-chip microcomputer.

[0020] Efuse: Electronic fuse: Electronic fuse, a device with fusible properties, belongs to one-time programmable memory.

[0021] Vehicle platoon autonomous driving: two or more vehicles travel in platoon, with the front and rear vehicles maintaining a short distance (within 10 meters). The front vehicle can be manually driven, while the rear vehicle is autonomously driven.

[0022] In the existing solution, in the case of redundant power supply, each power supply relies on the power chip (step-down chip, which can be used to detect the voltage and current of the circuit) to perform closed-loop detection and control inside the chip. The existing solution cannot achieve closed-loop detection and control on the entire hardware system.

[0023] Based on this, an embodiment of the present application provides a redundant power supply circuit failure detection method, a vehicle-mounted terminal and a storage medium. The method combines the closed-loop detection inside the chip with the closed-loop detection and control on the hardware system, and can identify whether a single power supply has failed.

[0024] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The several specific embodiments listed can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0025] The embodiment of the present application provides a redundant power supply circuit failure detection method, which can be implemented on a single chip microcomputer.

[0026] like Figure 1 The flowchart of a redundant power supply circuit failure detection method according to an embodiment of the present application is shown. The method may include:

[0027] Step S101, controlling the power supply circuit in the redundant power supply circuit to be in a connected state.

[0028] In the embodiment of the present application, the single chip microcomputer can control the working state of each power supply circuit in the redundant power supply circuit, and the working state includes being in a connected state or in a disconnected state. Each power supply circuit in the redundant power supply circuit is controlled to be in a connected state, so as to reduce the situation where the failure detection result is inaccurate due to the power supply circuit being in a disconnected state.

[0029] Step S102, obtaining a first voltage at an input end of an electronic fuse in a target power supply circuit in the redundant power supply circuit, a second voltage at an output end, a current of the electronic fuse, and an output voltage of the redundant power supply circuit.

[0030] In an embodiment of the present application, the redundant power supply circuit includes a plurality of power supply circuits that can be used for independent power supply. Each power supply circuit includes an electronic fuse and an anti-backflow circuit connected in series. The electronic fuse can be an Efuse chip. The anti-backflow circuit is a circuit design for preventing current from flowing in reverse.

[0031] A circuit in the redundant power supply circuit, for example, the circuit currently being tested, is used as the target power supply circuit. The voltage at the input end of the electronic fuse in the target power supply circuit is used as the first voltage, and the voltage at the output end of the electronic fuse is used as the second voltage. The redundant power supply circuit can supply power to the electric device through any power supply circuit. The output voltage of the circuit used to supply power to the electric device is obtained, that is, the output voltage of the redundant power supply circuit is obtained.

[0032] In this step, the first voltage at the input end of the electronic fuse, the second voltage at the output end, and the current of the electronic fuse of any power supply circuit in the redundant power supply circuit can be obtained in real time to provide timely data support for failure detection.

[0033] Step S103: Detect that one or more of the first voltage, the second voltage, the current, and the output voltage is abnormal, and determine a failure detection result of the target power supply circuit based on the abnormality.

[0034] In an embodiment of the present invention, a first voltage threshold, a second voltage threshold, a current threshold, and an output voltage threshold are preset. By comparing the first voltage and the first voltage threshold, the second voltage and the second voltage threshold, the current and the current threshold, and the output voltage and the output voltage, it can be determined whether the first voltage, the second voltage current, or the output voltage is abnormal. When it is detected that one or more values ​​of the first voltage, the second voltage, the current, and the output voltage are abnormal, the failure detection result of the target power supply circuit is determined based on the abnormality. Among them, the failure detection result includes information about the failed power supply circuit in the redundant power supply circuit.

[0035] The embodiment of the present application provides a method for detecting failure of a redundant power supply circuit, in which each power supply circuit includes an electronic fuse and an anti-backflow circuit connected in series, and the method includes: controlling the power supply circuit in the redundant power supply circuit to be in a pass state; obtaining the first voltage at the input end of the electronic fuse in the target power supply circuit in the redundant power supply circuit, the second voltage at the output end, the current of the electronic fuse, and the output voltage of the redundant power supply circuit; detecting that one or more values ​​of the first voltage, the second voltage, the current, and the output voltage are abnormal, and determining the failure detection result of the target power supply circuit based on the abnormality. According to the embodiment of the present application, any power supply circuit in the redundant power supply circuit can be used as the target power supply circuit to identify whether any power supply circuit in the redundant circuit has failed.

[0036] In one possible implementation, it is detected that one or more values ​​of the first voltage, the second voltage, the current and the output voltage are abnormal, and a failure detection result of the target power supply circuit is determined based on the abnormality, including: detecting that the first voltage is normal, the current is abnormal, and the second voltage is abnormal, and determining that the electronic fuse of the target power supply circuit has failed.

[0037] In this possible implementation, when the current is greater than or less than a preset threshold, it is determined that the current is abnormal. When the second voltage value is greater than or less than a preset second voltage threshold, it is determined that the second voltage is abnormal. When the first voltage is normal, the current is abnormal, and the second voltage is abnormal, it is determined that the electronic fuse of the target power supply circuit has failed. The failure of the electronic fuse of the target power supply circuit is used as the failure detection result of the target power supply circuit.

[0038] In this step, for each power supply circuit in the redundant power supply circuit, it can be determined whether the electronic fuse therein is failed, thereby accurately locating the risk point, facilitating timely maintenance, and reducing the difficulty of maintenance.

[0039] In one possible implementation, an abnormality is detected in one or more values ​​of the first voltage, the second voltage, the current and the output voltage, and a failure detection result of the target power supply circuit is determined based on the abnormality, including: detecting the first voltage abnormality, the current abnormality and the second voltage abnormality, and determining that the target power supply circuit has failed.

[0040] In this possible implementation, when the first voltage is greater than or less than a preset first voltage threshold, it is determined that a first voltage abnormality is detected. When the current is greater than or less than a preset threshold, it is determined that a current abnormality is detected. When the second voltage value is greater than or less than a preset second voltage threshold, it is determined that a second voltage abnormality is detected. When the first voltage abnormality, the current abnormality, and the second voltage abnormality are detected, it is determined that the target power supply circuit fails. The failure of the target power supply circuit is used as a failure detection result of the target power supply circuit.

[0041] In this step, when the first voltage, the second voltage and the current of the electronic fuse in the target power supply circuit are all failed, it is directly determined that the target power supply circuit is failed.

[0042] In one possible implementation, it is detected that one or more values ​​of the first voltage, the second voltage, the current and the output voltage are abnormal, and the failure detection result of the target power supply circuit is determined based on the abnormality, including: detecting that the first voltage is normal, the current is abnormal, the second voltage is normal and the output voltage is normal, controlling the other power supply circuits in the redundant power supply circuit except the target power supply circuit to be in an open circuit state, and reacquiring the first voltage, the current, the second voltage and the output voltage; detecting that the reacquired first voltage is normal, the reacquired current is abnormal, the reacquired second voltage is normal and the reacquired output voltage is abnormal, and determining that the backflow prevention circuit of the target power supply circuit has failed.

[0043] In this possible implementation, when the current is greater than or less than a preset threshold, it is determined that a current abnormality is detected. When it is detected that the first voltage is normal, the current is abnormal, the second voltage is normal, and the output voltage is normal, the following operations need to be further performed: control the other power supply circuits in the redundant power supply circuit except the target power supply circuit to be in an open circuit state, and reacquire the first voltage, the current, the second voltage, and the output voltage. Afterwards, when it is detected that the reacquired first voltage is normal, the reacquired current is abnormal, the reacquired second voltage is normal, and the reacquired output voltage is abnormal, it is determined that the anti-backflow circuit of the target power supply circuit has failed.

[0044] In this step, when a current anomaly is detected in the target power supply circuit, the current and voltage data of the target power supply circuit are recollected to further confirm whether the anti-backflow circuit in the target power supply circuit has failed, thereby more accurately locating the risk point and taking the failure of the anti-backflow circuit as the failure detection result of the target power supply circuit.

[0045] In a possible implementation, controlling the power supply circuit in the redundant power supply circuit to be in a conductive state includes: sending a closing control instruction to an electronic fuse of each power supply circuit in the redundant power supply circuit to close an electronic switch in the electronic fuse. The closing control instruction is used to control the electronic switch of the electronic fuse to be in a closed state.

[0046] In this possible implementation, the single chip microcomputer can control the working state of the electronic switch in the electronic fuse through a closing control instruction. When the electronic fuse is in a closed state, the first voltage, the second voltage, the current of the target power supply circuit and the output voltage of the redundant power supply circuit are obtained, which can reduce the impact on the failure detection result of the target power supply circuit caused by the electronic fuse being in an open circuit state.

[0047] In a possible implementation, it also includes: detecting that the first voltage and the second voltage of each power supply circuit are normal, and detecting that the output voltage is normal, then determining that the redundant power supply circuit is normal; and determining the power supply circuit with normal current as the main circuit currently supplying power.

[0048] In this possible implementation, when it is detected that the first voltage and the second voltage of each power supply circuit are normal, and the output voltage is detected to be normal, it indicates that each power supply circuit in the redundant power supply circuit is in a normal working state. If the current of a power supply circuit is in a normal state, it is determined that the power supply circuit is the main circuit currently supplying power.

[0049] In a possible implementation, the redundant power supply circuit is used to supply power to an in-vehicle electronic product, and the method further includes: sending the failure detection result to the in-vehicle electronic product so that the in-vehicle electronic product displays the failure detection result.

[0050] In this possible implementation, after the failure detection result is obtained, the failure detection result is sent to the vehicle-mounted electronic product so that the vehicle-mounted electronic product displays the failure detection result. The vehicle-mounted electronic product is used to control the vehicle to perform platoon autonomous driving. By real-time detection of the failure of the redundant power supply circuit, it is ensured that the risk point can be reported and repaired in the first time when the hardware fails, thereby improving the reliability of subsequent vehicle platoon autonomous driving.

[0051] See also Figure 2 A redundant power supply failure detection schematic diagram is shown below. Figure 2 A possible implementation process of this method is described.

[0052] like Figure 2As shown, for each power input, the MCU detects the current value of the power supply and the voltage value before and after the Efuse chip through the Efuse chip, and can calculate whether the Efuse chip of the power supply is invalid, whether it is the main power supply, whether the power supply is invalid, etc. Figure 2 The ideal diode shown in can be realized by a backflow prevention circuit. Figure 2 The redundant power supply circuit in the system includes two power supply circuits, A and B. Efuse chip A and Efuse chip B are electronic fuses in the A power supply and the B power supply respectively.

[0053] The specific steps for detecting redundant power supply circuit failure are as follows:

[0054] 1) When the power supplies of A and B are normal, voltage detection 1-5 can detect normal voltage values;

[0055] 2) When power supply A fails, the on-board electronic products can still rely on another power supply to maintain normal operation. The MCU uses the values ​​of voltage detection 1, current detection 1, voltage detection 2, and voltage detection 5 (collected when control 1 and control 2 are both "closed"), and the failure conditions are as follows:

[0056] A. Voltage detection 1: normal; current detection 1: abnormal; voltage detection 2: abnormal; it is determined that the Efuse chip is faulty;

[0057] B. Voltage detection 1: abnormal; current detection 1: abnormal; voltage detection 2: abnormal; it is determined that the power supply of line A is faulty;

[0058] C. In the first step, when control 2 is "closed" (making path B open): voltage detection 1: normal; current detection 1: abnormal; voltage detection 2: normal; voltage detection 5: normal, then execute the second step; in the second step, when control 2 is "open" (making path B open): voltage detection 1: normal; current detection 1: abnormal; voltage detection 2: normal; voltage detection 5: abnormal, it is determined that the ideal diode of path A has failed.

[0059] In the case of redundant power supply, based on the above method, it is possible to detect whether the series circuit on the link fails, ensuring that when the hardware fails, the risk point can be reported to the on-board electronic products as soon as possible, so that maintenance can be carried out in time, thereby improving the reliability of subsequent vehicle platoon autonomous driving.

[0060] Corresponding to the application scenario and method of the method provided in the embodiment of the present application, the embodiment of the present application also provides a redundant power supply circuit failure detection device. Figure 3 The figure is a structural block diagram of a redundant power supply circuit failure detection device according to an embodiment of the present application, and the device may include:

[0061] A control module 301 is used to control the power supply circuit in the redundant power supply circuit to be in a connection state; an acquisition module 302 is used to acquire a first voltage at an input end of an electronic fuse in a target power supply circuit in the redundant power supply circuit, a second voltage at an output end, a current of the electronic fuse, and an output voltage of the redundant power supply circuit; a detection module 303 is used to detect that one or more values ​​of the first voltage, the second voltage, the current and the output voltage are abnormal, and determine a failure detection result of the target power supply circuit based on the abnormality.

[0062] In an embodiment of the present invention, a redundant power supply circuit failure detection device is provided, in which each power supply circuit includes an electronic fuse and an anti-backflow circuit connected in series, and the device includes: a control module, used to control the power supply circuit in the redundant power supply circuit to be in a pass state; an acquisition module, used to acquire the first voltage at the input end of the electronic fuse in the target power supply circuit in the redundant power supply circuit, the second voltage at the output end, the current of the electronic fuse, and the output voltage of the redundant power supply circuit; a detection module, used to detect that one or more values ​​of the first voltage, the second voltage, the current and the output voltage are abnormal, and determine the failure detection result of the target power supply circuit based on the abnormality. According to the embodiment of the present application, any power supply circuit in the redundant power supply circuit can be used as the target power supply circuit to identify whether any power supply circuit in the redundant circuit has failed.

[0063] In one possible implementation, it is detected that one or more values ​​of the first voltage, the second voltage, the current and the output voltage are abnormal, and a failure detection result of the target power supply circuit is determined based on the abnormality, including: detecting that the first voltage is normal, the current is abnormal, and the second voltage is abnormal, and determining that the electronic fuse of the target power supply circuit has failed.

[0064] In one possible implementation, an abnormality is detected in one or more values ​​of the first voltage, the second voltage, the current and the output voltage, and a failure detection result of the target power supply circuit is determined based on the abnormality, including: detecting the first voltage abnormality, the current abnormality and the second voltage abnormality, and determining that the target power supply circuit has failed.

[0065] In one possible implementation,

[0066] Detecting that one or more of the first voltage, the second voltage, the current and the output voltage have an abnormality, and determining a failure detection result of the target power supply circuit based on the abnormality, including: detecting that the first voltage is normal, the current is abnormal, the second voltage is normal and the output voltage is normal, controlling the other power supply circuits in the redundant power supply circuit except the target power supply circuit to be in an open circuit state, and reacquiring the first voltage, the current, the second voltage and the output voltage; detecting that the reacquired first voltage is normal, the reacquired current is abnormal, the reacquired second voltage is normal and the reacquired output voltage is abnormal, and determining that the backflow prevention circuit of the target power supply circuit has failed.

[0067] In a possible implementation, controlling a power supply circuit in the redundant power supply circuit to be in a connected state includes:

[0068] A closing control instruction is sent to the electronic fuse of each power supply circuit in the redundant power supply circuit; wherein the closing control instruction is used to control the electronic switch of the electronic fuse to be in a closed state.

[0069] In a possible implementation, it also includes: detecting that the first voltage and the second voltage of each power supply circuit are normal, and detecting that the output voltage is normal, then determining that the redundant power supply circuit is normal; and determining the power supply circuit with normal current as the main circuit currently supplying power.

[0070] In a possible implementation, the redundant power supply circuit is used to supply power to an in-vehicle electronic product, and the method further includes: sending the failure detection result to the in-vehicle electronic product so that the in-vehicle electronic product displays the failure detection result.

[0071] The functions of each module in each device in the embodiments of the present application can be found in the corresponding description in the above method, and have corresponding beneficial effects, which will not be repeated here.

[0072] Figure 4 FIG. 1 is a block diagram of a vehicle-mounted terminal for implementing an embodiment of the present application. Figure 4 As shown, the vehicle terminal includes: a memory 401 and a processor 402. The memory 401 stores a computer program that can be run on the processor 402. When the processor 402 executes the computer program, the method in the above embodiment is implemented. The number of the memory 401 and the processor 402 can be one or more.

[0073] The vehicle terminal also includes:

[0074] The communication interface 403 is used to communicate with external devices and perform data exchange transmission.

[0075] If the memory 401, the processor 402 and the communication interface 403 are implemented independently, the memory 401, the processor 402 and the communication interface 403 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0076] Optionally, in a specific implementation, if the memory 401, the processor 402 and the communication interface 403 are integrated on a chip, the memory 401, the processor 402 and the communication interface 403 can communicate with each other through an internal interface.

[0077] An embodiment of the present application provides a computer-readable storage medium storing a computer program, which implements the method provided in the embodiment of the present application when the program is executed by a processor.

[0078] An embodiment of the present application provides a computer program product, wherein the computer program product includes a computer program, and when the computer program is executed by a processor, the method provided in the embodiment of the present application is implemented.

[0079] An embodiment of the present application also provides a chip, which includes a processor for calling and executing instructions stored in the memory from the memory, so that a communication device equipped with the chip executes the method provided by the embodiment of the present application.

[0080] An embodiment of the present application also provides a chip, including: an input interface, an output interface, a processor and a memory, wherein the input interface, the output interface, the processor and the memory are connected via an internal connection path, and the processor is used to execute the code in the memory. When the code is executed, the processor is used to execute the method provided in the embodiment of the application.

[0081] It should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. It is worth noting that the processor may be a processor supporting the Advanced RISC Machines (ARM) architecture.

[0082] Further, optionally, the above-mentioned memory may include a read-only memory and a random access memory. The memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may include a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may include a random access memory (RAM), which is used as an external cache. By way of exemplary but not limiting description, many forms of RAM are available. For example, static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct memory bus random access memory (DR RAM).

[0083] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0085] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0086] Any process or method described in the flow chart or otherwise described herein can be understood as a module, fragment or portion of a code representing one or more executable instructions for implementing the steps of a specific logical function or process. And the scope of the preferred embodiment of the present application includes other implementations, in which the functions may not be performed in the order shown or discussed, including in a substantially simultaneous manner or in a reverse order according to the functions involved.

[0087] The logic and / or steps described in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, which can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or used in combination with these instruction execution systems, devices or apparatuses.

[0088] It should be understood that the various parts of the present application can be implemented with hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented with software or firmware stored in a memory and executed by a suitable instruction execution system. All or part of the steps of the above embodiment method can be completed by instructing the relevant hardware through a program, which can be stored in a computer-readable storage medium, and when the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0089] In addition, each functional unit in each embodiment of the present application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. If the above-mentioned integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. The storage medium can be a read-only memory, a disk or an optical disk, etc.

[0090] The above is only an exemplary embodiment of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope recorded in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for detecting failure of a redundant power supply circuit, wherein each redundant power supply circuit comprises an electronic fuse and an anti-backflow circuit connected in series, and the method comprises: Controlling the power supply circuit in the redundant power supply circuit to be in a connected state; Acquire a first voltage at an input end of an electronic fuse in a target power supply circuit in the redundant power supply circuit, a second voltage at an output end, a current of the electronic fuse, and an output voltage of the redundant power supply circuit; An abnormality is detected in one or more of the first voltage, the second voltage, the current, and the output voltage, and a failure detection result of the target power supply circuit is determined based on the abnormality.

2. The method according to claim 1, wherein: Detecting that one or more of the first voltage, the second voltage, the current, and the output voltage is abnormal, and determining a failure detection result of the target power supply circuit based on the abnormality, includes: It is detected that the first voltage is normal, the current is abnormal, and the second voltage is abnormal, and it is determined that the electronic fuse of the target power supply circuit is faulty.

3. The method according to claim 1, wherein: Detecting that one or more of the first voltage, the second voltage, the current, and the output voltage is abnormal, and determining a failure detection result of the target power supply circuit based on the abnormality, includes: The first voltage abnormality, the current abnormality, and the second voltage abnormality are detected, and it is determined that the target power supply circuit fails.

4. The method according to claim 1, wherein: Detecting that one or more of the first voltage, the second voltage, the current, and the output voltage is abnormal, and determining a failure detection result of the target power supply circuit based on the abnormality, includes: Detecting that the first voltage is normal, the current is abnormal, the second voltage is normal, and the output voltage is normal, controlling the other power supply circuits in the redundant power supply circuit except the target power supply circuit to be in an open circuit state, and reacquiring the first voltage, the current, the second voltage, and the output voltage; It is detected that the reacquired first voltage is normal, the reacquired current is abnormal, the reacquired second voltage is normal, and the reacquired output voltage is abnormal, and it is determined that the backflow prevention circuit of the target power supply circuit fails.

5. The method according to claim 1, wherein: Controlling the power supply circuit in the redundant power supply circuit to be in a connected state includes: A closing control instruction is sent to the electronic fuse of each power supply circuit in the redundant power supply circuit; wherein the closing control instruction is used to control the electronic switch of the electronic fuse to be in a closed state.

6. The method according to any one of claims 1 to 5, wherein: Also includes: Detecting that the first voltage and the second voltage of each power supply circuit are both normal, and detecting that the output voltage is normal, then determining that the redundant power supply circuit is normal; The power supply circuit with normal current is detected and determined as the main circuit currently supplying power.

7. The method according to claim 1, wherein: The redundant power supply circuit is used to supply power to vehicle-mounted electronic products, and the method further includes: The failure detection result is sent to the in-vehicle electronic product, so that the in-vehicle electronic product displays the failure detection result.

8. An in-vehicle terminal, comprising a memory, a processor, and a computer program stored in the memory, wherein the processor implements the method according to any one of claims 1 to 7 when executing the computer program.

9. A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. A computer program product, wherein: The computer program product comprises a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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