Integratable power management device with self-checking switching function

Abstract

The invention discloses an integratable power management device with a self-checking switching function, and relates to the technical field of power management, and the device comprises a communication circuit which is in communication connection with an upper computer; the CPU circuit is connected with the communication circuit and used for processing tasks and instructions issued by the upper computer; the A / D conversion circuit is connected with the CPU circuit and is used for converting the analog signal into a digital signal; the isolation voltage acquisition circuit is connected between the power supply input and the A / D conversion circuit and realizes voltage isolation acquisition through a photoelectric coupler so as to reduce strong current interference and ensure the authenticity of data; the self-checking switching circuit is connected with the CPU circuit and the voltage acquisition circuit and is used for detecting the isolation voltage acquisition circuit when the main power supply does not distribute power; and the secondary power supply circuit is connected with the self-checking switching circuit and is used for providing a stable auxiliary power supply required by an internal circuit of the device. The problem that a traditional power management system is insufficient in reliability and safety is solved, and the manufacturing cost is reduced through a reasonable multiplexing strategy.

Description

Technical Field

[0001] The present application relates to the technical field of power management, and more specifically, to an integrable power management device with self-check switching. Background Art

[0002] In the modern aerospace field, the power demand of servo systems continues to grow, and multi-way power supply in parallel has become a mainstream trend. However, with the increase in system complexity, power management also faces new challenges. Traditional power management devices often lack effective self-checking mechanisms, which makes fault diagnosis difficult and time-consuming, and the reliability and maintenance efficiency of the system are low, making it difficult to achieve effective management of multi-way power supplies.

[0003] Traditional power management systems are usually only responsible for converging multiple power supplies and monitoring power status, but rarely consider how to perform internal health checks without external power supply, which means that once a failure occurs, technicians must rely on external tools or methods to locate the problem, which undoubtedly increases maintenance time and costs. Therefore, how to improve the robustness of the power management system, perform self-check procedures before startup or regularly, and detect potential problems in advance to avoid mission failures caused by sudden failures is an urgent problem to be solved, especially in high-reliability application scenarios such as aviation and aerospace. This is particularly important. Summary of the invention

[0004] In response to at least one defect or improvement need in the prior art, the present invention provides an integrated power management device with self-check switching, aiming to provide a complete solution for managing and monitoring multiple power supplies, solving the problems of insufficient system reliability and security in traditional power management systems, and reducing manufacturing costs through a reasonable multiplexing strategy while achieving efficient self-checking functions.

[0005] To achieve the above-mentioned purpose, specifically, an embodiment of the present invention provides an integrated power management device with self-check switching, including: a communication circuit, which is connected to a host computer for communication; a CPU circuit, which is connected to the communication circuit and is used to process tasks and instructions issued by the host computer; an A / D conversion circuit, which is connected to the CPU circuit and is used to convert analog signals into digital signals for processing by the CPU circuit; an isolated voltage acquisition circuit, which is connected between the power supply input and the A / D conversion circuit, and realizes voltage isolation and acquisition through a photoelectric coupler to reduce strong electrical interference and ensure the authenticity of the data; a self-check switching circuit, which is connected to the CPU circuit and the voltage acquisition circuit, and is used to detect the isolated voltage acquisition circuit when the main power supply is not distributed; a secondary power supply circuit, which is connected to the self-check switching circuit and is used to provide a stable auxiliary power supply required by the internal circuit of the device.

[0006] In one embodiment of the present invention, the self-test switching circuit is used to be activated when the power supply is not distributed, so that the secondary power supply of the secondary power supply circuit is input into the isolated voltage acquisition circuit, thereby verifying the function of the isolated voltage acquisition circuit.

[0007] In one embodiment of the present invention, the isolated voltage acquisition circuit includes photoelectric couplers of multiple channels, which are used to respectively acquire the power supply voltages of multiple rudder systems.

[0008] In one embodiment of the present invention, the CPU circuit uses a high-speed digital signal processor to receive a self-test instruction from a communication circuit and generate a corresponding switch signal to operate the self-test switching circuit.

[0009] In one embodiment of the present invention, the A / D conversion circuit can convert the analog voltage value acquired by the isolation voltage acquisition circuit into a digital signal so that the CPU circuit can analyze and judge it.

[0010] In one embodiment of the present invention, the self-test switching circuit includes a multi-channel optocoupler array for connecting the secondary power supply circuit with each of the isolated voltage acquisition circuits during the self-test period.

[0011] In one embodiment of the present invention, the device is integrated with the rudder system, and the existing circuits of the rudder system are multiplexed through the multiple channels to reduce the overall cost by using the multiplexed circuits.

[0012] In one embodiment of the present invention, the self-check switching circuit is designed with a switch mechanism, which cuts off the connection between the secondary power supply circuit and the isolation voltage acquisition circuit after the self-check is completed, and restores normal power supply voltage acquisition.

[0013] In one embodiment of the present invention, the isolated voltage acquisition circuit steps down the voltage to be measured through a voltage-dividing resistor network and sends it to a linear optocoupler, which is then processed by an operational amplifier and finally transmitted to an A / D conversion circuit.

[0014] In one embodiment of the present invention, the device supports starting a self-check process via a command sent by a host computer, and feeds back the self-check result to the host computer to assist in comprehensively judging the health status of the rudder system.

[0015] In general, the above technical solutions conceived by the present invention can achieve at least the following beneficial effects compared with the prior art:

[0016] By activating the self-check switching circuit in the unpowered state, the function of the isolated voltage acquisition circuit can be effectively detected, ensuring that the working status of each channel can be verified even before the system is started or when the power supply is not connected, discovering potential problems in advance, and avoiding task failures caused by faults; the use of optocouplers to achieve strong and weak current isolation reduces the impact of strong current on weak current parts, ensures the authenticity of the collected data, not only improves the measurement accuracy, but also enhances the system's anti-interference ability, making the entire power management system more stable and reliable; traditional power management devices lack an effective self-check function, while the self-check function provided by the present invention can complete internal health checks without relying on external tools, which greatly simplifies the process of daily maintenance and fault diagnosis, reduces maintenance costs, and shortens maintenance time; through the high integration between various modules, especially the reuse with the rudder system, for example, communication interfaces, power lines, etc. can be shared by multiple subsystems, thereby reducing hardware redundancy, saving space and materials, and reducing overall manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a power management device with self-checking switching that can be integrated provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the principle of a self-checking switching circuit provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of the principle of the isolated voltage acquisition circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] The terms "first", "second", "third", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0023] Figure 1 The overall principle block diagram of the power management device is shown. As can be seen from the figure, all key modules are closely connected to form a closed-loop control system. Each part has a clear role division and works together to complete power management and self-checking tasks.

[0024] Specifically, communication circuit 1: This module acts as a bridge to communicate with other systems, receives commands from the host computer, and sends local information back. It supports multiple protocols, such as RS232, CAN bus, etc., to ensure seamless connection between different devices.

[0025] CPU circuit 2: The core processor uses a high-speed DSP (Digital Signal Processor) because this type of chip is good at processing complex algorithm operations in real time. It can not only respond quickly to external requests, but also efficiently coordinate the workflow of other subsystems.

[0026] Secondary power supply circuit 3: In order to ensure that the system can maintain basic operation even when the main power supply is disconnected, the secondary power supply circuit provides necessary backup support. This part of the design adopts a redundant configuration. Even if one of the power supplies fails, the other can continue to supply power, improving the overall stability.

[0027] A / D conversion circuit 4: Since most sensors output analog signals and DSP needs to process digital signals, the A / D conversion circuit plays a vital role. It can accurately convert analog quantities into digital values ​​for subsequent analysis.

[0028] Self-check switching circuit 5: This is the design focus of this embodiment. When the system is in standby mode or just starting up, an analog signal can be injected into the isolated voltage acquisition circuit through the self-check switching circuit to test whether the latter is working normally. The advantage of this is that before officially connecting to the main power supply, you can know in advance which channels may have hidden dangers and take preventive measures.

[0029] Isolation voltage acquisition circuit 6: Considering the large difference between high and low voltage in the power system, direct connection may cause mutual interference or even damage sensitive components. Therefore, a photocoupler is used here for electrical isolation, which can effectively prevent interference and ensure measurement accuracy.

[0030] In one embodiment, Figure 2 The specific structure of the self-check switching circuit is given. In the flight system, a self-check is required before the power supply and distribution to ensure that all parts are in good condition before the power is actually turned on. However, at this stage, the input end of the voltage acquisition circuit is actually suspended and cannot be effectively detected. In order to solve this problem, the self-check switching circuit is designed.

[0031] The self-test switching circuit is composed of multiple channels of optocouplers. Each channel corresponds to a specific voltage acquisition path. During the self-test process, the CPU will send a switch signal (for example, DSP-ZJ) to turn on the optocoupler. At this time, the voltage that should have been provided by the main power supply is replaced by the secondary power supply voltage after voltage division. In this way, even without an external power supply, the real voltage environment can be simulated to conduct a comprehensive inspection of the acquisition circuit.

[0032] It is worth noting that after the self-test is completed, the CPU will issue a command again to turn off all optocouplers and cut off the connection between the secondary power supply and the isolated voltage acquisition circuit, thereby restoring the normal power supply voltage acquisition working mode. During this period, the system will record the results of each self-test and upload them to the host computer for further analysis.

[0033] By activating the self-test switching circuit in the unpowered state, the function of the isolated voltage acquisition circuit can be effectively tested. This ensures that the working status of each channel can be verified even before the system is started or when the power supply is not connected, and potential problems can be discovered in advance to avoid mission failures caused by faults.

[0034] In one embodiment, Figure 3 The working principle of the isolated voltage acquisition circuit is described. The main purpose of this circuit is to safely obtain the actual voltage value of multiple power supplies while avoiding the adverse effects of strong current on weak current. For this reason, we choose linear optocoupler as the isolation element.

[0035] In a linear optocoupler, the voltage on the input side is first processed by appropriate voltage division and then sent to a light-emitting diode (LED). The light beam generated by the LED passes through a transparent medium and shines on the phototransistor on the opposite side, which then restores the optical signal into an electrical signal. Since the two sides of the optocoupler are completely isolated, no matter what changes occur on one side, they will not directly affect the other side, thus achieving an ideal isolation effect.

[0036] The use of photoelectric couplers to achieve strong and weak current isolation reduces the impact of strong current on weak current and ensures the authenticity of the collected data. This design not only improves the measurement accuracy, but also enhances the system's anti-interference ability, making the entire power management system more stable and reliable.

[0037] Next, the electrical signal on the output side will be sent to the operational amplifier (OPAMP) for amplification and shaping, and finally form a standard format suitable for reading by the A / D converter. After the digital-to-analog conversion, the digital signal can be directly read by the CPU and participate in the subsequent logical judgment.

[0038] In one embodiment, in addition to the above key technologies, the present invention also pays special attention to how to maximize the use of existing resources and reduce unnecessary duplication. For example, in some cases, the power management device can share some hardware facilities with the rudder system, such as the same communication interface or shared power lines. Doing so can not only save space and materials, but also reduce overall power consumption and improve the compactness and economy of the system.

[0039] The following is a typical workflow of a power management device:

[0040] 1. Initialization: After the system is powered on, it is first initialized, including loading default parameters, calibrating sensors, etc.

[0041] 2. Self-test process: According to preset rules or instructions from the host computer, the self-test switching circuit is triggered to start functional testing of the isolated voltage acquisition circuit.

[0042] 3. Data analysis: The CPU collects data from various acquisition circuits and evaluates their consistency and accuracy through built-in algorithms.

[0043] 4. Result feedback: Report the self-test results to the host computer and wait for the next instruction.

[0044] 5. Normal operation: If the self-test passes, the main power supply will be connected as planned and the system will enter normal monitoring and service status; otherwise, an alarm will be issued to prompt the user to troubleshoot the fault.

[0045] The power management device with self-checking switching function proposed by the present invention has a wide range of application potentials. It can be applied to any occasions that require multi-way power management and have strict requirements on reliability, such as aerospace, military equipment, industrial automation and other fields. Especially in those critical tasks that cannot allow any mistakes, such a device can help engineers better understand the health status of the system, make correct decisions in time, and ensure the smooth completion of the task.

[0046] In summary, the integrated power management device with self-test switching provided in the embodiment of the present application can effectively detect the function of the isolated voltage acquisition circuit by activating the self-test switching circuit in the unpowered state, thereby ensuring that the working status of each channel can be verified even before the system is started or the power supply is not connected, thereby discovering potential problems in advance and avoiding task failures caused by faults.

[0047] The use of photoelectric couplers to achieve isolation between strong and weak electricity reduces the impact of strong electricity on weak electricity, ensures the authenticity of collected data, not only improves measurement accuracy, but also enhances the system's anti-interference ability, making the entire power management system more stable and reliable.

[0048] Traditional power management devices lack effective self-checking functions, while the self-checking function provided by the present invention can complete internal health checks without relying on external tools, which greatly simplifies the process of daily maintenance and fault diagnosis, reduces maintenance costs, and shortens repair time.

[0049] Through the high degree of integration between various modules, especially the reuse with the rudder system, for example, communication interfaces and power lines can be shared by multiple subsystems, thereby reducing hardware redundancy, saving space and materials, and thus reducing the overall manufacturing cost.

[0050] By using high-speed DSP as the core processing unit, the power management device can quickly respond to various commands and requests and flexibly adjust the working mode. It can efficiently cope with both routine monitoring and rapid switching in emergency situations.

[0051] To ensure that the system can maintain basic operation even when the main power supply is disconnected, the secondary power supply circuit provides the necessary backup support. This part of the design adopts a redundant configuration to ensure that even if one power supply fails, the other can continue to supply power, improving energy efficiency while also enhancing system stability.

[0052] The communication circuit supports multiple communication protocols (such as RS232, CAN bus, etc.) to ensure seamless connection between different devices. This design not only improves the scalability of the system, but also reserves space for future upgrades and modifications.

[0053] By using optocouplers for electrical isolation, mutual interference between high and low voltages is effectively prevented, ensuring the safe operation of sensitive components. In addition, the design of the self-checking switching circuit also takes safety into consideration, avoiding unnecessary power consumption and possible risks.

[0054] The A / D conversion circuit accurately converts analog signals into digital signals for further processing by the CPU. Combined with efficient communication circuits, it realizes real-time monitoring and feedback of the status of multiple power supplies, which helps the host computer make timely decisions and optimize the performance of the entire system.

[0055] The present invention is particularly suitable for application scenarios that require multi-channel power management and have strict requirements on reliability, such as aerospace, military equipment, industrial automation and other fields. It can not only be directly embedded in these complex systems, but also can be easily connected to other peripheral devices through standardized interfaces, greatly promoting the integration of the system.

[0056] In addition, it can be understood that the aforementioned embodiments are merely illustrative descriptions of the present application. Under the premise that the technical features do not conflict, the structures do not contradict, and the purpose of the invention of the present application is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used in combination.

[0057] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and / or methods can be implemented in other ways. For example, the device embodiments described above are merely schematic, and the division of the units / modules is merely a logical function division. There may be other division methods in actual implementation, such as multiple units or modules can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0058] The units / modules described as separate components may or may not be physically separated, and the components shown as units / modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units / modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0059] In addition, each functional unit / module in each embodiment of the present application may be integrated into one processing unit / module, or each unit / module may exist physically separately, or two or more units / modules may be integrated into one unit / module. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of hardware plus software functional units / modules.

[0060] The above-mentioned integrated unit / module implemented in the form of a software functional unit / module can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for enabling one or more processors of a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A power management device with self-checking switching that can be integrated, characterized in that: include: A communication circuit (1) is connected to a host computer for communication; A CPU circuit (2), connected to the communication circuit (1), for processing tasks and instructions issued by the host computer; An A / D conversion circuit (4), connected to the CPU circuit (2), and used for converting analog signals into digital signals for processing by the CPU circuit (2); An isolated voltage acquisition circuit (6) is connected between the power supply input and the A / D conversion circuit (4) and realizes voltage isolation acquisition through a photoelectric coupler to reduce strong electrical interference and ensure the authenticity of data; A self-check switching circuit (5) connected to the CPU circuit (2) and the voltage collection circuit (6) and used to detect the isolated voltage collection circuit (6) when the main power supply is not distributing power; The secondary power supply circuit (3) is connected to the self-checking switching circuit (5) and is used to provide a stable auxiliary power supply required by the internal circuit of the device.

2. The integrable power management device with self-checking switching according to claim 1, characterized in that: The self-check switching circuit (5) is used to be activated in a power supply non-distribution state, so that the secondary power supply of the secondary power supply circuit (3) is input into the isolated voltage acquisition circuit (6), thereby verifying the function of the isolated voltage acquisition circuit (6).

3. The integrable power management device with self-checking switching according to claim 1, characterized in that: The isolated voltage acquisition circuit (6) comprises a plurality of channels of photoelectric couplers, which are used to respectively acquire the power supply voltages of the multi-channel rudder systems.

4. The integrable power management device with self-checking switching according to claim 1, characterized in that: The CPU circuit (2) uses a high-speed digital signal processor, which is used to receive the self-test instruction from the communication circuit (1) and generate a corresponding switch signal to operate the self-test switching circuit (5).

5. The integrable power management device with self-checking switching according to claim 1, characterized in that: The A / D conversion circuit (4) can convert the analog voltage value acquired by the isolation voltage acquisition circuit (6) into a digital signal so that the CPU circuit (2) can analyze and judge it.

6. The integrable power management device with self-checking switching according to claim 1, characterized in that: The self-test switching circuit (5) comprises a multi-channel photoelectric coupler array, which is used to connect the secondary power supply circuit (3) and each of the isolated voltage acquisition circuits (6) during the self-test period.

7. The integrable power management device with self-checking switching according to claim 3, characterized in that: The device is integrated with the rudder system and multiplexes existing circuits of the rudder system through the multiple channels, so as to reduce the overall cost by utilizing the multiplexed circuits.

8. The integrable power management device with self-checking switching according to claim 1, characterized in that: The self-check switching circuit (5) is designed with a switch mechanism, which cuts off the connection between the secondary power supply circuit (3) and the isolation voltage acquisition circuit (6) after the self-check is completed, and restores normal power supply voltage acquisition.

9. The integrable power management device with self-checking switching according to claim 1, characterized in that: The isolated voltage acquisition circuit (6) steps down the voltage to be measured through a voltage-dividing resistor network and sends it to a linear optical coupler, which is then processed by an operational amplifier and finally transmitted to an A / D conversion circuit (4).

10. The integrable power management device with self-checking switching according to claim 3, characterized in that: The device supports starting a self-check process via a command sent by a host computer, and feeds back the self-check results to the host computer to assist in comprehensively judging the health status of the rudder system.

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