Intelligent terminal multi-peripheral power supply protection device
By setting independent power supply channels and overcurrent protection modules for each peripheral device of the smart terminal, setting protection thresholds according to power consumption levels and distinguishing transient currents, the problem of power failure caused by peripheral devices sharing a power supply in the smart terminal is solved, and the isolation and rapid location of faulty peripheral devices are achieved.
Patent Information
- Application Number
- CN202611411667.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-11
- Publication Date
- 2026-11-03
AI Technical Summary
In existing technologies, multiple peripherals of a smart terminal share the same power supply, which causes the entire device to lose power when one peripheral fails. It is impossible to distinguish the differences in power consumption of peripherals and transient high currents. Uniform threshold protection cannot effectively isolate faulty peripherals and makes it difficult to quickly locate specific faults.
Each peripheral device is equipped with an independent power supply channel and overcurrent protection module. Protection thresholds are set according to the power consumption level of the peripheral device, and transient and steady-state currents are distinguished. The main control module identifies and isolates faulty peripheral devices to achieve independent power supply and fault location.
It ensures that a single peripheral failure does not affect the operation of the whole machine, the protection threshold is adapted to peripherals with different power consumption, avoids false triggering, quickly locates the faulty peripheral, and facilitates maintenance.
Smart Images
Figure CN123034309A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power supply protection technology for smart terminals, specifically to a power supply protection device for multiple peripheral devices in smart terminals, which is particularly suitable for scenarios where each peripheral device in a smart terminal with multiple peripheral devices, such as cash registers and self-service terminals, has independent power supply, independent protection, and fault location. Background Technology
[0002] Smart terminals such as cash registers, self-service terminals, and advertising machines typically integrate multiple peripherals. Taking a cash register as an example, its motherboard needs to supply power to multiple peripherals such as touch screens, printers, barcode scanners, cash drawers, payment modules, and cameras. These peripherals all draw power from the cash register motherboard, which is powered by the power circuitry on the motherboard.
[0003] During the operation of a cash register, various peripherals operate in different states: the touchscreen continuously displays and responds to touch input; the printer draws a large current when printing receipts; the barcode scanner scans goods; the cash drawer is opened by the motherboard when customers pay and receive change; and the payment module operates when receiving payments. These peripherals have different operating states and power consumption, and some peripherals (such as printers and cash drawers) generate instantaneous currents far exceeding their standby current during operation. During peak checkout times in restaurants and retail stores, multiple peripherals may operate simultaneously, placing a significant strain on the motherboard's power supply.
[0004] In practical use, a peripheral device may experience a short circuit or overcurrent due to water damage, cable breakage, or internal component failure. Since these peripheral devices typically share the same power supply, a short circuit in one peripheral device will lower the output voltage of the entire power supply, causing the motherboard and other peripheral devices to lose power simultaneously, resulting in a system crash or restart. For cash registers and self-service terminals that require continuous and stable operation, a failure in one peripheral device can paralyze the entire machine, causing business interruption and data loss.
[0005] For self-service terminals, such as self-service ordering machines, self-service checkout machines, and self-service vending machines, their peripheral devices are similar to those of checkout machines, and they are often unattended and operate continuously. Once a short circuit in a peripheral device causes the entire machine to lose power, the self-service terminal will be unable to provide services, and in an unattended environment, the fault is difficult to detect and handle in a timely manner.
[0006] On the other hand, the power consumption of different peripherals varies greatly: peripherals such as printers and touchscreens consume more power, while peripherals such as barcode scanners and cash drawers consume less. Furthermore, some peripherals exhibit transient high current characteristics; for example, the cash drawer generates a transient current much higher than the steady-state current when it is opened, or the printer generates a transient current much higher than the steady-state current when paper is fed. If a uniform, fixed overcurrent protection threshold is used, setting the threshold too high will not effectively protect low-power peripherals, while setting it too low will cause false triggering of protection due to transient high current.
[0007] In existing technologies, motherboard power supply protection for peripherals typically employs a uniform overcurrent protection method at the main power supply. This method only protects the entire power supply circuit and cannot distinguish which specific peripheral is malfunctioning. The problem of the entire system losing power when a peripheral short-circuits still exists, and the uniform threshold is difficult to accommodate the protection needs of peripherals with different power consumption and peripherals with transient high current. How to isolate a faulty peripheral, set protection thresholds according to the differences in peripheral power consumption, and distinguish between transient and steady-state currents are problems that need to be solved in this field.
[0008] Furthermore, in existing protection schemes for multi-output power supplies, the overcurrent protection thresholds for each output are usually set uniformly, with the main purpose of providing unified protection and remote management for each output branch. However, the differences in power consumption of the loads connected to each branch and the transient high current characteristics of the loads are not considered. When such schemes are applied to scenarios such as cash registers and self-service terminals where the power consumption of peripherals varies greatly and some peripherals are subject to transient high current surges, the uniform threshold still cannot take into account both the sensitive protection of low-power peripherals and the prevention of false triggering of transient peripherals. It is also difficult to quickly locate the specific faulty peripheral after a fault occurs. Summary of the Invention
[0009] The purpose of this invention is to provide a power supply protection device for multiple peripherals of a smart terminal. By setting independent power supply channels and overcurrent protection for each peripheral, and setting protection thresholds according to peripheral power consumption levels, and distinguishing between transient and steady-state currents, the device can isolate and accurately locate faulty peripherals, thus preventing a single peripheral failure from dragging down the entire device.
[0010] To achieve the above objectives, the present invention provides a power supply protection device for multiple peripherals in a smart terminal, comprising a main control module and multiple power supply channels. Each power supply channel is connected to a corresponding peripheral interface on the smart terminal motherboard to supply power to each peripheral. Each power supply channel has an overcurrent protection module connected in series to cut off the power supply to that channel when a short circuit or overcurrent occurs in the peripheral connected to that channel. Each power supply channel also has a current detection module connected to the main control module to detect the current of the corresponding power supply channel. The rated current of each power supply channel is determined according to the power consumption level of the connected peripheral. The power supply channels for high-power peripherals are configured to have higher rated currents, while those for low-power peripherals have lower rated currents. The main control module distinguishes between transient and steady-state currents in the power supply channels. When the current in a power supply channel exceeds a preset steady-state threshold and the duration exceeds a preset delay, it determines that the peripheral connected to that power supply channel has malfunctioned and controls the overcurrent protection module of that power supply channel to cut off the power supply to that channel. The multiple power supply channels are independent of each other, so that a short circuit or overcurrent in a peripheral only cuts off the power supply channel corresponding to that peripheral, without affecting the power supply to other peripherals and the motherboard.
[0011] The core concept of this invention lies in splitting the unified power supply from the smart terminal motherboard to various peripherals into multiple independent power supply channels. Each power supply channel corresponds to one peripheral, and an independent overcurrent protection module is set on each power supply channel. Simultaneously, the rated current of each power supply channel is set according to the power consumption level of each peripheral, and the transient current and steady-state current of the peripheral are distinguished to avoid false protection triggered by transient high current. When a peripheral experiences a short circuit or overcurrent, the overcurrent protection module of the corresponding power supply channel activates, cutting off the power supply to that channel and isolating the faulty peripheral. The main control module identifies and reports the faulty peripheral, facilitating maintenance. In this way, a single peripheral failure no longer leads to complete system failure, the protection threshold can adapt to peripherals with different power consumption levels, and peripherals experiencing transient high current are not mistakenly damaged.
[0012] In one implementation, the overcurrent protection module is either a resettable fuse or an overcurrent detection chip. A resettable fuse limits current by rapidly increasing resistance during an overcurrent event and automatically resumes conduction after the fault is cleared. An overcurrent detection chip detects the current and outputs a control signal to cut off power during an overcurrent event. The two can also be used in combination: the overcurrent detection chip quickly cuts off the short-circuit current, while the resettable fuse serves as backup protection, achieving a balance between response speed and reliability.
[0013] In one embodiment, the current detection module includes a sampling resistor and an amplifier circuit connected in series in the power supply channel. The voltage across the sampling resistor is amplified and input to the analog-to-digital conversion interface of the main control module. The main control module distinguishes between transient and steady-state currents in the power supply channel. When the current in a power supply channel exceeds a preset steady-state threshold and the over-limit state lasts for more than a preset delay, it determines that a short circuit or overcurrent has occurred in the peripheral device connected to that channel. The preset delay is used to filter out large transient currents generated during normal operation of the peripheral device, avoiding false triggering of protection. When a peripheral device is determined to be faulty, the main control module outputs the identification information of the faulty peripheral device through a display or communication interface, and records the fault time and peripheral device identification, forming a fault log.
[0014] In one implementation, the power supply channel connecting the hot-swappable peripheral is further equipped with an insertion protection module to suppress inrush current at the moment of peripheral insertion. Insertion protection can be implemented by using a series inductor or by setting a soft-start circuit: the inductor impedes sudden changes in current and can suppress the rate of rise of the inrush current at the moment of insertion; the soft-start circuit gradually increases the supply voltage after the peripheral is inserted, limiting the initial charging current.
[0015] In one implementation, the rated current, transient current delay threshold, and fault reporting method of each power supply channel can all be configured through the main control module to adapt to different peripheral models and application scenarios. For cash registers with a large number of peripherals and complex operating conditions, different protection parameters can be configured for each peripheral; for advertising machines with fewer peripherals and simpler operating conditions, uniform protection parameters can be used.
[0016] It should be noted that the "independent power supply channel" in this solution can be either an independent power supply trace on the motherboard or an independent power supply branch divided by a power management chip or a power switch chip. Regardless of the implementation method, the core is that each peripheral's power supply path is equipped with independent overcurrent protection, so that when a peripheral fails, its power supply can be cut off separately without affecting other peripherals and the motherboard.
[0017] In one implementation, after the main control module detects that the current of a certain peripheral power supply channel continuously exceeds the steady-state threshold and reaches the preset delay, it determines that the peripheral is faulty and outputs a faulty peripheral identifier. After the power supply of the faulty peripheral is cut off, the main control module can control the power supply channel corresponding to the peripheral to remain disconnected until the maintenance personnel confirm and eliminate the fault, and then restore the power supply channel to prevent the faulty peripheral from being repeatedly connected, causing the protection element to repeatedly operate.
[0018] Compared with the prior art, the present invention has the following beneficial effects: This invention provides independent power supply channels and overcurrent protection for each peripheral device, achieving isolation of faulty peripheral devices. A short circuit in a single peripheral device will no longer bring down the entire device, improving the power supply reliability and continuous operation capability of the smart terminal. Protection thresholds are set according to the power consumption levels of peripheral devices, and transient and steady-state currents are distinguished, taking into account both the protection of peripheral devices with different power consumption and the prevention of false triggering of peripheral devices with high transient current. By using current detection and reporting of faulty peripheral device identifiers by the main control module, faulty peripheral devices can be quickly located, facilitating maintenance.
[0019] The significance of the synergistic effect of graded threshold and delay judgment lies in the fact that graded threshold solves the problem that peripherals with different power consumption require different protection starting points, while delay judgment solves the problem that normal transient high current of peripherals should not trigger protection. If graded threshold is used alone without distinguishing between transient and steady state, peripherals with transient high current characteristics such as printers and cash drawers will be mistakenly cut off during normal operation. If delay judgment is used alone without graded threshold, low-power peripherals will not be sensitively detected when they malfunction. Both are indispensable.
[0020] This solution is particularly suitable for multi-peripheral smart terminals such as cash registers and self-service terminals that have a variety of peripherals, require continuous and stable operation, and need rapid fault location. When a peripheral fails, the impact is limited to that peripheral itself, while the service of other peripherals and the entire machine remains unaffected, fundamentally avoiding the problem of "a single point of failure dragging down the entire machine". Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the present invention; In the diagram: 1-Power supply channel; 2-Overcurrent protection module; 3-Current detection module; 4-Main control module; 5-Peripheral interface; 6-Power supply module; 7-Motherboard. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0023] Example 1 Reference Figure 1 This embodiment provides a power supply protection device for multiple peripherals in a smart terminal, applied to the mainboard 7 of a cash register. The peripheral interfaces 5 on the mainboard 7 include a touch screen interface, a printer interface, a barcode scanner interface, a cash drawer interface, and a payment module interface.
[0024] The power module 6 of the POS mainboard 7 outputs a main power supply, which is led to each peripheral interface 5 through multiple independent power supply channels 1. After being led out from the main power supply, each power supply channel 1 passes through the overcurrent protection module 2 and the current detection module 3 in sequence, and then connects to the corresponding peripheral interface 5. The overcurrent protection module 2 and the current detection module 3 are arranged near the corresponding peripheral interface 5 to shorten the path for fault detection and protection action.
[0025] Each peripheral interface 5 draws power from the power module 6 of the motherboard 7 through an independent power supply channel 1. A resettable fuse is connected in series in each power supply channel 1 as an overcurrent protection module 2. The rated current of the resettable fuse is set according to the power consumption level of the connected peripheral: peripherals with higher power consumption, such as touch screens and printers, correspond to resettable fuses with higher rated current, while peripherals with lower power consumption, such as barcode scanners and cash drawers, correspond to resettable fuses with lower rated current.
[0026] The rated current set by the grade is matched with the transient / steady-state delay judgment described in Example 3: For peripherals such as printers and cash drawers that have transient high current characteristics, the rated current of their power supply channel 1 is selected according to the steady-state power consumption level, and the transient impact at the moment of operation is filtered by the delay judgment. The two work together to ensure that the protection of each peripheral is neither oversensitive nor misses the fault.
[0027] The overcurrent protection principle of a resettable fuse is as follows: Under normal operation, the resettable fuse is in a low-resistance state, having almost no impact on the power supply to peripherals. When a short circuit occurs in a peripheral or the current in power supply channel 1 increases sharply, the resettable fuse heats up due to the large current flowing through it. As the temperature rises, its resistance increases rapidly, limiting the channel current to a very small range, effectively cutting off the power supply to the peripheral. Because the resettable fuse automatically returns to a low-resistance state after the fault is cleared and it cools down, it does not require manual replacement, making it particularly suitable for smart terminals such as cash registers and self-service terminals where frequent disassembly and maintenance are inconvenient.
[0028] When a peripheral device, such as a printer, experiences a short circuit due to a malfunction, the current in its corresponding power supply channel 1 increases sharply. The resistance of the resettable fuse on that channel increases rapidly, limiting the current to a very small range and cutting off the effective power supply to the printer, thus isolating it. The power supply to the other power supply channels 1—the touchscreen, barcode scanner, cash drawer, and payment module—remains unaffected, and the mainboard 7 continues to operate normally. After the fault is cleared, the resettable fuse automatically returns to conduction, and the power supply channel 1 corresponding to the printer resumes normal power supply.
[0029] Example 2 The difference between this embodiment and Embodiment 1 is that, in addition to a resettable fuse, each power supply channel 1 is also equipped with a current detection module 3 and a main control module 4. The current detection module 3 includes a sampling resistor connected in series with the power supply channel 1. The voltage across its terminals is amplified by an operational amplifier and then input to the analog-to-digital conversion interface of the main control module 4. The main control module 4 calculates the current of each power supply channel 1 based on this voltage.
[0030] The main control module 4 distinguishes between transient and steady-state currents in power supply channel 1: when it detects that the current in a power supply channel 1 exceeds a preset steady-state threshold, and the duration of this over-limit state exceeds a preset delay, it determines that a short circuit or overcurrent has occurred in the peripheral device connected to that channel. The preset delay is used to filter out large transient currents generated during normal operation of the peripheral device, avoiding false triggering of protection. When a peripheral device is determined to be faulty, the main control module 4 outputs the identification information of the faulty peripheral device through a display or communication interface, and records the fault time and peripheral device identification, forming a fault log to facilitate maintenance personnel in quickly locating and replacing faulty peripheral devices.
[0031] The value of the current sensing resistor needs to ensure sufficient detection accuracy under the normal operating current of the peripheral device, while avoiding excessive voltage drop across the resistor that could affect the peripheral device's power supply voltage. For peripheral devices with higher operating current, a smaller resistance resistor can be selected; for peripheral devices with lower operating current, a larger resistance resistor can be selected to improve detection sensitivity at low currents.
[0032] Example 3 Based on Embodiment 1, this embodiment employs a delayed-triggered overcurrent protection method for peripherals with transient high-current characteristics, such as cash drawers and printers, on their power supply channel 1. When the cash drawer is opened or the printer is feeding paper, it generates transient currents far exceeding steady-state currents. If the overcurrent protection triggers immediately, it will misinterpret normal transient high currents as short circuits, causing the peripherals to malfunction. This embodiment, by setting a delayed trigger, ensures that the overcurrent protection only activates after the current has continuously exceeded the limit for a certain period, thereby distinguishing between transient surges and actual short circuits.
[0033] Delayed triggering can be achieved by setting a delay circuit before the overcurrent protection module 2, or by using a software delay in the main control module 4. The hardware delay circuit can use a resistor-capacitor charging and discharging circuit, which triggers disconnection only after a capacitor charging delay following the arrival of the overcurrent signal. The software delay, on the other hand, is initiated by the main control module 4 after detecting an overcurrent, and a fault is only determined when the overcurrent duration reaches a preset value. The hardware delay response is unaffected by the operating state of the main control module 4, while the software delay is more flexible and its parameters are adjustable.
[0034] Example 4 This embodiment, based on Embodiment 1, adds an insertion protection module to the power supply channel 1 for hot-swappable peripherals such as barcode scanners. Barcode scanners are typically hot-swapped via a Universal Serial Bus interface, generating inrush current at the moment of insertion. Insertion protection suppresses this inrush current at the moment of insertion, preventing it from triggering overcurrent protection or affecting the power stability of the motherboard 7. Insertion protection can be implemented by connecting an inductor in series with power supply channel 1 or by setting a soft-start circuit; both methods effectively suppress the inrush current of hot-swapped peripherals.
[0035] Example 5 The difference between this embodiment and Embodiment 1 is that the overcurrent protection module 2 uses an overcurrent detection chip instead of a resettable fuse. The overcurrent detection chip is connected in series with power supply channel 1 and integrates current detection and switch control functions. It determines the current magnitude by detecting the voltage across the sampling resistor. When an overcurrent is detected, it automatically disconnects the internal switch, cutting off the power supply to that channel. The overcurrent threshold of the overcurrent detection chip can be configured via an external resistor. Its response speed is faster than that of a resettable fuse, making it suitable for peripherals with high requirements for protection response time. The overcurrent detection chip and the resettable fuse can be used together. The overcurrent detection chip is responsible for quickly cutting off the short-circuit current, while the resettable fuse serves as backup protection, achieving a balance between response speed and reliability.
[0036] Example 6 This embodiment applies the aforementioned power protection device to a self-service terminal, such as a self-service ordering machine or a self-service checkout machine. The peripheral interface 5 of the self-service terminal includes a touchscreen interface, a printer interface, a barcode / payment module interface, and a camera interface. Self-service terminals are typically unattended and operate continuously. Their power protection device is the same as in Embodiment 1, meaning each peripheral device draws power through an independent power supply channel 1, and each power supply channel 1 is equipped with a resettable fuse and a current detection module 3.
[0037] When a peripheral device of the self-service terminal, such as a camera, short-circuits, the self-resetting fuse in its power supply channel 1 activates to isolate it. The touchscreen, printer, and payment module of the self-service terminal continue to operate normally, and the overall service remains uninterrupted. The main control module 4 identifies the camera fault through current detection and can report the fault information to the back-end management system via the communication interface. Maintenance personnel can then replace the faulty camera during the next inspection without having to troubleshoot on-site. This fault isolation and remote reporting capability is particularly important for unattended self-service terminals.
[0038] Working principle The working principle of this device can be summarized as "independent power supply, independent protection, and fault isolation". In traditional solutions, multiple peripherals share a single power supply. A short circuit in any peripheral will lower the voltage of the entire power supply, causing all peripherals and the motherboard 7 to lose power simultaneously. This device separates each peripheral into an independent power supply channel 1, and each channel is equipped with an independent overcurrent protection module 2. When a peripheral short-circuits, only the power supply channel 1 corresponding to that peripheral is cut off, while the remaining peripherals and the motherboard 7 continue to operate normally, thus achieving isolation of the faulty peripheral.
[0039] To address the issue of significant power consumption differences among peripheral devices, this device sets the rated current of each power supply channel 1 according to the power consumption level of each peripheral, ensuring sufficient power supply for high-power peripherals and effective overcurrent protection for low-power peripherals. For the transient high-current characteristics of some peripherals, this device distinguishes between transient and steady-state currents and sets delayed triggering, enabling the protection device to identify real short circuits without mistakenly damaging transient currents during normal operation of the peripherals. Through the synergy of independent power supply, graded thresholds, and transient differentiation, this device achieves reliable power supply protection and accurate fault location for multiple peripheral intelligent terminals such as cash registers and self-service terminals.
[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.
Claims
1. A power supply protection device for multiple peripheral devices in a smart terminal, comprising a main control module (4) and multiple power supply channels (1), wherein the multiple power supply channels (1) are respectively connected to multiple peripheral interfaces (5) on the motherboard (7) of the smart terminal, for supplying power to each peripheral device respectively; characterized in that: Each of the power supply channels (1) is connected in series with an overcurrent protection module (2) for cutting off the power supply to the power supply channel (1) when a short circuit or overcurrent occurs in the peripheral device connected to the power supply channel (1); Each of the power supply channels (1) is also provided with a current detection module (3), which is connected to the main control module (4) and is used to detect the current of the corresponding power supply channel (1); The rated current of each power supply channel (1) is set according to the power consumption level of the connected peripheral. The power supply channel (1) connected to the high power consumption peripheral corresponds to a higher rated current, and the power supply channel (1) connected to the low power consumption peripheral corresponds to a lower rated current. The main control module (4) is used to distinguish between the transient current and steady-state current of the power supply channel (1). When it is detected that the current of a certain power supply channel (1) exceeds the preset steady-state threshold and the duration exceeds the preset delay, it determines that the peripheral connected to the power supply channel (1) has failed, and controls the overcurrent protection module (2) of the power supply channel (1) to cut off the power supply of the power supply channel (1). The multiple power supply channels (1) are independent of each other, so that a short circuit or overcurrent of a certain peripheral only cuts off the power supply channel (1) corresponding to that peripheral, without affecting the power supply of other peripherals and the motherboard (7).
2. The intelligent terminal multi-peripheral power supply protection device according to claim 1, characterized in that: The overcurrent protection module (2) includes an overcurrent detection chip and a self-resetting fuse. The overcurrent detection chip is responsible for quickly cutting off the short-circuit current, and the self-resetting fuse serves as backup protection.
3. The intelligent terminal multi-peripheral power supply protection device according to claim 1, characterized in that: The overcurrent protection module (2) is a self-resetting fuse. The rated current of the self-resetting fuse is selected according to the power consumption level of the connected peripheral. The power supply channel (1) connected to the high power consumption peripheral corresponds to a self-resetting fuse with a larger rated current, and the power supply channel (1) connected to the low power consumption peripheral corresponds to a self-resetting fuse with a smaller rated current.
4. The intelligent terminal multi-peripheral power supply protection device according to claim 1, characterized in that: The current detection module (3) includes a sampling resistor and an amplification circuit connected in series on the power supply channel (1). The voltage across the sampling resistor is amplified by the amplification circuit and then input to the analog-to-digital conversion interface of the main control module (4).
5. The intelligent terminal multi-peripheral power supply protection device according to claim 4, characterized in that: The resistance value of the sampling resistor is selected according to the working current of the connected peripheral. The power supply channel (1) connected to the peripheral with a larger working current uses a sampling resistor with a smaller resistance value, while the power supply channel (1) connected to the peripheral with a smaller working current uses a sampling resistor with a larger resistance value, so as to improve the current detection sensitivity of the small current power supply channel (1).
6. The intelligent terminal multi-peripheral power supply protection device according to claim 1, characterized in that: When the main control module (4) determines that a peripheral connected to a certain power supply channel (1) has failed, it outputs the identification information corresponding to the faulty peripheral to locate the faulty peripheral.
7. The intelligent terminal multi-peripheral power supply protection device according to claim 6, characterized in that: The main control module (4) is also used to record the peripheral devices that malfunction and the time of the malfunction, forming a fault log.
8. The intelligent terminal multi-peripheral power supply protection device according to claim 1, characterized in that: The power supply channel (1) for connecting hot-swappable peripherals is also equipped with an insertion protection module to suppress surge current when the peripheral is inserted.
9. The intelligent terminal multi-peripheral power supply protection device according to claim 1, characterized in that: The rated current of each power supply channel (1), the preset delay and the fault reporting method can all be configured by the main control module (4).