System and method for detecting instant state of interface of distributed power supply access unit

Abstract

The invention relates to the technical field of intelligent power grid management and electronic equipment detection, in particular to an interface instant state detection system and method for a distributed power supply access unit, and the method comprises the steps: a configuration information unit analyzes a configuration file of external communication equipment according to a stored configuration file sample, and generates recognition detection information; the state detection unit detects the plugging or unplugging state of external communication equipment through hardware, the communication interface unit is used for sending the identification detection information to the external communication equipment and receiving response information of the external communication equipment, and the identification unit identifies the external communication equipment according to the identification detection information, the level signal and the response information. And identifying the interface state of the distributed power supply access unit. According to the invention, the physical connection state of the external communication equipment is sensed in real time through the hardware level signal of the state detection unit, a dual verification mechanism of a physical layer and a protocol layer is formed in combination with the analysis of the communication protocol response information by the identification unit, the identification accuracy is improved, and the load is reduced.

Description

Technical Field

[0001] The present invention relates to the technical fields of smart grid management and electronic equipment detection, and in particular to a system and method for detecting the real-time status of an interface of a distributed power supply access unit. Background Art

[0002] With the rapid development of renewable energy, the large-scale integration of distributed power sources (such as photovoltaic power generation, wind power generation, and energy storage systems) has placed higher demands on the stability and intelligent management of the power grid. Distributed power sources are typically connected to the power grid or other devices through power electronic interface devices (such as inverters and converters). Real-time detection of their interface status is key to ensuring reliable system operation. However, in existing technologies, after a device is identified and inserted, it is necessary to read the device information of the expansion device, such as the device ID, and then launch related driver and service programs based on the device ID. Some expansion devices require the terminal's CPU to send the relevant programs to the expansion device. This process is relatively complex and requires a large amount of related resources (RAM and FLASH). It is more suitable for medium-to-high-end terminals with embedded operating systems such as Linux, which have rich network functions and device independence. However, for embedded devices running RTOS real-time systems or bare metal MCUs with limited resources, how to implement lightweight interface status detection is a current research direction. Summary of the Invention

[0003] (1) Purpose of the invention

[0004] The purpose of the present invention is to provide a system and method for real-time interface status detection of a distributed power access unit, which can accelerate the identification process and realize lightweight interface status detection.

[0005] (2) Technical solution

[0006] To solve the above problems, the present invention provides an interface real-time status detection system for a distributed power supply access unit, comprising: a configuration information unit, an identification unit, a status detection unit and a communication interface unit;

[0007] The configuration information unit, the state detection unit and the communication interface unit are respectively connected to the identification unit;

[0008] The configuration information unit parses the configuration file of the external communication device and generates identification detection information based on the stored configuration file sample;

[0009] The state detection unit detects the insertion or removal state of the external communication device through hardware and feeds back the corresponding level signal to the identification unit;

[0010] The communication interface unit is used to send the identification detection information to the external communication device and receive response information from the external communication device, and transmit the response information to the identification unit;

[0011] The identification unit identifies the interface status of the distributed power supply access unit according to the identification detection information, the level signal and the response information.

[0012] In another aspect of the present invention, preferably, the state detection unit detects the insertion or removal state of the external communication device through hardware and feeds back the corresponding level signal to the identification unit, including:

[0013] The state detection unit detects the state of the external communication device through the hardware IO circuit;

[0014] When the external communication device is in the plug-in state, a low level signal is output to the identification unit;

[0015] When the external communication device is in the unplugged state, a high level signal is output to the identification unit.

[0016] In another aspect of the present invention, preferably, the configuration file includes a communication baud rate, supported communication data items, and device characteristic data; and the format of the configuration file is a binary format.

[0017] In another aspect of the present invention, preferably, the configuration information unit includes a storage subunit and a parsing subunit;

[0018] The storage subunit is used to store configuration file samples;

[0019] The parsing subunit is used to perform bit-level parsing and matching on the configuration file of the external communication device according to the configuration file sample library, and generate identification detection information according to the matching result.

[0020] In another aspect of the present invention, preferably, the identification unit includes a logic control subunit and a state determination subunit;

[0021] The logic control subunit is used to generate identification detection information according to the configuration file of the configuration information unit, and control the data interaction between the communication interface unit and the external communication device;

[0022] The state determination subunit is used to determine the physical connection state of the external communication device according to the level signal, and to determine the interface state of the distributed power supply access unit as communicable, non-communicable or communication faulty in combination with the response information received by the communication interface unit;

[0023] The logic control subunit and the state determination subunit share interface state information via a data cache space.

[0024] In another aspect of the present invention, preferably, a method for detecting the real-time status of an interface of a distributed power supply access unit comprises the following steps:

[0025] Step S1: Initialize the configuration information unit, identification unit and status detection unit, and turn off the power supply of the communication interface unit;

[0026] Step S2: the recognition unit obtains the level signal of the state detection unit;

[0027] Step S3: Identifying the state of the external communication device according to the level signal, where the state of the external communication device includes an inserted state and an unplugged state;

[0028] Step S4: If the state of the external communication device is the plugged-in state, power on the communication interface unit, obtain identification detection information, communicate with the external communication device according to the identification detection information, and identify the interface state of the distributed power access unit according to the response information of the external communication device;

[0029] If the state of the external communication device is unplugged, the identification ends.

[0030] In another aspect of the present invention, preferably, the initialization configuration information unit, the identification unit and the status detection unit include:

[0031] Initialization of the identification unit includes: applying for data cache space, the data cache space is used to store historical and current interface status information;

[0032] Initialization of the configuration information unit includes: parsing a configuration file of the external communication device and generating identification detection information according to a stored configuration file sample;

[0033] The initialization of the status detection unit includes: detecting a hardware port.

[0034] In another aspect of the present invention, preferably, the interface status of the distributed power supply access unit includes:

[0035] If the external communication device is unplugged, the interface status of the distributed power access unit is incommunicable;

[0036] If the state of the external communication device is the plugged in state and the response information of the external communication device is received, the interface state of the distributed power supply access unit is communicable;

[0037] If the status of the external communication device is the inserted status and no response information is received from the external communication device, the interface status of the distributed power supply access unit is a communication failure.

[0038] Another aspect of the present invention preferably further includes: if the state of the external communication device is unplugged, executing step 2 to a preset number of times.

[0039] In another aspect of the present invention, preferably, if the status of the external communication device is the inserted status and no response information is received from the external communication device, a preset number of retries is set. If no response information is received from the external communication device after the number of retries, the interface status of the distributed power supply access unit is a communication failure.

[0040] (3) Beneficial effects

[0041] The above technical solution of the present invention has the following beneficial technical effects:

[0042] The present invention senses the physical connection status (plugged in / unplugged) of the external communication device in real time through the hardware level signal of the status detection unit, and combines the dynamic analysis of the communication protocol response information by the identification unit to form a "physical layer + protocol layer" dual verification mechanism. Compared with pure software polling or protocol matching solutions, the immediate response triggered by the hardware signal can reduce the status detection delay to the microsecond level, while avoiding misjudgments caused by communication protocol timeouts, and improving the overall recognition accuracy. It is especially suitable for scenarios with strict real-time requirements such as RTOS or bare metal systems. The configuration information unit uses a binary format to store configuration files. The compact field definition only requires tens of bytes of storage space to implement the configuration of a single type of device. The parsing of binary data does not require complex syntax analysis. Key parameters can be quickly extracted directly through memory mapping, which significantly reduces the load and adapts to resource-constrained deployment requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0044] Figure 2 is a schematic diagram of a distributed power access unit in a power system according to an embodiment of the present invention;

[0045] Figure 3 It is a schematic diagram of a detection method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0047] The accompanying drawings illustrate schematic diagrams of structures according to embodiments of the present invention. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positions, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0048] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] The present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, identical elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale.

[0051] Example 1

[0052] An interface real-time status detection system for a distributed power supply access unit, Figure 1 FIG. 1 shows a schematic diagram of the overall structure of an embodiment of the present invention, as shown in FIG. Figure 1 As shown, it includes: a configuration information unit, an identification unit, a state detection unit and a communication interface unit; Figure 2 FIG. 1 shows a schematic diagram of a distributed power access unit in a power system according to an embodiment of the present invention. Figure 2 As shown in the figure, in distributed power access scenarios, distributed power sources such as photovoltaic and wind power are intermittent and fluctuating, and the status of their access device interfaces requires real-time monitoring. This detection system can accurately and timely monitor the interface status, ensuring stable and reliable data transmission, and enabling efficient communication and coordinated operation between distributed power sources and the power grid. For example, in a photovoltaic power station, the interface status between devices such as inverters and distributed power access units can be monitored in real time to ensure accurate collection and upload of photovoltaic power generation data, assisting the power grid in monitoring, controlling, and managing distributed power sources, and improving the stability, reliability, and intelligence of the power system.

[0053] The configuration information unit, the state detection unit and the communication interface unit are respectively connected to the identification unit;

[0054] The configuration information unit parses the configuration file of the external communication device and generates identification detection information based on the stored configuration file sample; the configuration file includes the communication baud rate, supported communication data items and device feature data; the format of the configuration file is binary format, which is the most original data and takes up very little space, and a single type may even only require dozens of bytes. The configuration information unit includes a storage subunit and a parsing subunit; the storage subunit is used to store the configuration file sample; the parsing subunit is used to perform bit-level parsing and matching on the configuration file of the external communication device based on the configuration file sample library, and generate identification detection information based on the matching results.

[0055] In this embodiment, the available formats after the configuration file is parsed are shown in Table 1.

[0056] Table 1 Configuration file format after parsing

[0057]

[0058] The state detection unit detects the insertion or removal status of the external communication device through hardware and feeds back the corresponding level signal to the identification unit; based on hardware circuits or sensors, etc., the plugging and unplugging actions of the external communication device are monitored in real time, and the level signal corresponding to the plugging and unplugging is fed back to the identification unit to realize the perception of the physical connection status. In this embodiment, the state detection unit detects the insertion or unplugging status of the external communication device through hardware and feeds back the corresponding level signal to the identification unit, including:

[0059] The status detection unit detects the status of the external communication device through a hardware I / O circuit. This circuit utilizes hardware I / O (input / output) circuits, a method of sensing status based on the electrical characteristics of the hardware. Hardware I / O circuits are composed of basic electronic components such as resistors, capacitors, and transistors, and are capable of responding to changes in electrical parameters caused by the insertion or removal of an external communication device.

[0060] When an external communication device is plugged in, it outputs a low-level signal to the identification unit. When the identification unit receives this low-level signal, it indicates that the external communication device has been plugged into the interface of the distributed power access unit. Subsequent communication and data exchange are only possible when the external communication device is plugged in. Based on this signal, the identification unit further combines the identification detection information generated by the configuration information unit and the response information received by the communication interface unit to determine whether the interface is functioning properly and whether data collection and transmission are possible.

[0061] When the external communication device is unplugged, a high-level signal is output to the identification unit. Upon receiving this high-level signal, the identification unit determines that the external communication device has been unplugged from the interface. At this point, the identification unit can cease attempts to communicate with the device, avoiding unnecessary waste of resources. The system can also take appropriate action based on this status information.

[0062] The communication interface unit is used to send the identification detection information to the external communication device and receive the response information of the external communication device, and transmit the response information to the identification unit; the communication interface unit establishes a communication link with the external communication device, sends the identification detection information and receives the response information, and then transmits it to the identification unit to realize information interaction.

[0063] The identification unit identifies the interface status of the distributed power access unit based on the identification probe information, level signal, and response information. The identification unit includes a logic control subunit and a status determination subunit. The logic control subunit generates identification probe information based on the configuration file in the configuration information unit, controlling data exchange between the communication interface unit and the external communication device. The configuration file contains various parameters and characteristics of the external communication device. The logic control subunit parses and processes this information to generate probe information that accurately identifies the external communication device. For example, for different communication device models and specifications, the configuration file may record key information such as the communication protocol and data format. The logic control subunit generates specific probe information based on this information to facilitate effective communication and identification with the external device. The logic control subunit determines when to send identification probe information to the external device and how to receive and process the external device's response information. For example, after sending the identification probe information, the logic control subunit sets a reasonable waiting time for the external device's response. If no response is received within the specified time, the logic control subunit may resend the probe information or take other measures. The status determination subunit is configured to determine the physical connection status of the external communication device based on the level signal and, in combination with the response information received by the communication interface unit, determine whether the interface status of the distributed power access unit is communicable, non-communicable, or has a communication failure. The status determination subunit determines the physical connection status of the external communication device based on the level signal fed back by the status detection unit. When a low-level signal is received, the external device is determined to be plugged in; when a high-level signal is received, the external device is determined to be unplugged. This level signal-based determination method is simple and direct, enabling quick and accurate determination of the device's physical connection status. Based on the physical connection status, the status determination subunit further determines the interface status of the distributed power access unit based on the response information received by the communication interface unit. Specifically, the status determination subunit determines that the interface is communicable when the external device is plugged in (low-level signal) and the communication interface unit receives a response that meets expectations. This indicates that a valid physical connection and communication link has been established between the distributed power access unit and the external communication device, enabling normal data transmission and interaction. In the communication failure state, even if the external device is in the plug-in state and the communication interface unit does not receive any response information, the state determination subunit determines that the interface is in the communication failure state.

[0064] The logic control subunit and the status determination subunit share interface status information through a data cache. The data cache serves as an intermediate storage and interaction space, allowing the two subunits to easily exchange information.

[0065] Example 2

[0066] A method for detecting the real-time status of an interface of a distributed power supply access unit. Figure 3 FIG. 1 shows an overall flow chart of an embodiment of the present invention, as shown in FIG. Figure 3 As shown, the following steps are included:

[0067] Step S1: Initializing the configuration information unit, the identification unit, and the status detection unit, and turning off the power supply of the communication interface unit; in this embodiment, the initialization of the configuration information unit, the identification unit, and the status detection unit includes:

[0068] The initialization of the identification unit includes: applying for data cache space, which is used to store historical and current interface status information; applying for data cache space to store historical and current interface status information, and judging whether there is a potential problem with the interface by checking the distribution of the communicative, non-communicative or communication failure status of the interface over a period of time.

[0069] Initialization of the configuration information unit includes: parsing a configuration file of the external communication device and generating identification detection information according to a stored configuration file sample;

[0070] The initialization of the state detection unit includes: detecting the hardware port. The purpose of detecting the hardware port is to ensure that the hardware circuit works normally and can accurately detect the insertion or removal status of the external communication device.

[0071] Step S2: the recognition unit obtains the level signal of the state detection unit;

[0072] Step S3: According to the level signal, the state of the external communication device is identified, and the state of the external communication device includes an inserted state and an unplugged state; the state detection unit detects the state of the external communication device through a hardware IO circuit; when the external communication device is in the inserted state, a low-level signal is output to the identification unit; when the external communication device is in the unplugged state, a high-level signal is output to the identification unit.

[0073] Step S4: If the state of the external communication device is the plugged-in state, power on the communication interface unit, obtain identification detection information, communicate with the external communication device according to the identification detection information, and identify the interface state of the distributed power access unit according to the response information of the external communication device;

[0074] If the state of the external communication device is unplugged, the identification ends. Further, if the state of the external communication device is unplugged, step 2 is executed for a preset number of times.

[0075] The interface status of the distributed power supply access unit includes:

[0076] If the external communication device is unplugged, the interface status of the distributed power access unit is incommunicable;

[0077] If the state of the external communication device is the plugged in state and the response information of the external communication device is received, the interface state of the distributed power supply access unit is communicable;

[0078] If the status of the external communication device is the inserted status and no response information is received from the external communication device, the interface status of the distributed power supply access unit is a communication failure.

[0079] If the status of the external communication device is inserted, and no response information is received from the external communication device, a preset number of retries is performed. If no response information is received from the external communication device after the number of retries, the interface status of the distributed power supply access unit is a communication failure.

[0080] The present invention uses hardware level signals from a status detection unit to sense the physical connection status (plugged / unplugged) of external communication devices in real time. Combined with the recognition unit's dynamic parsing of communication protocol response information, this creates a dual verification mechanism for the "physical layer + protocol layer." Compared to pure software polling or protocol matching solutions, the immediate response triggered by hardware signals reduces status detection latency to microseconds, while avoiding misjudgments caused by communication protocol timeouts. This improves overall recognition accuracy and is particularly suitable for scenarios with demanding real-time requirements, such as RTOS or bare-metal systems. The configuration information unit uses a binary format to store configuration files. Compact field definitions enable single-class device configuration requiring only tens of bytes of storage space. Binary data parsing eliminates the need for complex syntax analysis, allowing key parameters to be quickly extracted directly through memory mapping, significantly reducing load and adapting to resource-constrained deployment requirements. The present invention first detects whether the hardware device is currently in place, selectively enabling necessary communication interfaces and disabling inactive interfaces to rationally allocate resources and control power consumption. After detecting the corresponding status, the inactive interfaces are notified of their corresponding status in advance during the reading process, reducing interaction steps and saving execution time.

[0081] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

[0082] While the above description does not provide detailed technical details regarding patterning and etching of each layer, those skilled in the art will appreciate that various conventional methods can be used to form layers, regions, and the like in desired shapes. Furthermore, those skilled in the art may devise methods that differ from those described above to achieve the same structure.

[0083] The present invention has been described above with reference to the embodiments thereof. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Those skilled in the art may make various substitutions and modifications without departing from the scope of the present invention, and such substitutions and modifications are intended to fall within the scope of the present invention.

[0084] Although the embodiments of the present invention have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention.

[0085] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A distributed power supply access unit interface real-time status detection system, characterized in that: include: Configuration information unit, identification unit, status detection unit and communication interface unit; The configuration information unit, the state detection unit and the communication interface unit are respectively connected to the identification unit; The configuration information unit parses the configuration file of the external communication device and generates identification detection information based on the stored configuration file sample; The state detection unit detects the insertion or removal state of the external communication device through hardware and feeds back the corresponding level signal to the identification unit; The communication interface unit is used to send the identification detection information to the external communication device and receive response information from the external communication device, and transmit the response information to the identification unit; The identification unit identifies the interface status of the distributed power supply access unit according to the identification detection information, the level signal and the response information.

2. The detection system according to claim 1, characterized in that The state detection unit detects the insertion or removal state of the external communication device through hardware and feeds back the corresponding level signal to the identification unit, including: The state detection unit detects the state of the external communication device through the hardware IO circuit; When the external communication device is in the plug-in state, a low level signal is output to the identification unit; When the external communication device is in the unplugged state, a high level signal is output to the identification unit.

3. The detection system according to claim 1, characterized in that The configuration file includes a communication baud rate, supported communication data items, and device characteristic data; the format of the configuration file is a binary format.

4. The detection system according to claim 1, characterized in that The configuration information unit includes a storage subunit and a parsing subunit; The storage subunit is used to store configuration file samples; The parsing subunit is used to perform bit-level parsing and matching on the configuration file of the external communication device according to the configuration file sample library, and generate identification detection information according to the matching result.

5. The detection system according to claim 1, characterized in that The identification unit includes a logic control subunit and a state determination subunit; The logic control subunit is used to generate identification detection information according to the configuration file of the configuration information unit, and control the data interaction between the communication interface unit and the external communication device; The state determination subunit is used to determine the physical connection state of the external communication device according to the level signal, and determine the interface state of the distributed power supply access unit as communicable, non-communicable or communication faulty in combination with the response information received by the communication interface unit; The logic control subunit and the state determination subunit share interface state information via a data cache space.

6. A method for detecting the real-time status of an interface of a distributed power supply access unit, characterized in that: The following steps are involved: Step S1: Initialize the configuration information unit, identification unit and status detection unit, and turn off the power supply of the communication interface unit; Step S2: the recognition unit obtains the level signal of the state detection unit; Step S3: Identifying the state of the external communication device according to the level signal, where the state of the external communication device includes an inserted state and an unplugged state; Step S4: If the state of the external communication device is the plugged-in state, power on the communication interface unit, obtain identification detection information, communicate with the external communication device according to the identification detection information, and identify the interface state of the distributed power access unit according to the response information of the external communication device; If the state of the external communication device is unplugged, the identification ends.

7. The detection method according to claim 6, characterized in that The initialization configuration information unit, the identification unit and the status detection unit include: Initialization of the identification unit includes: applying for data cache space, the data cache space is used to store historical and current interface status information; Initialization of the configuration information unit includes: parsing a configuration file of the external communication device and generating identification detection information according to a stored configuration file sample; The initialization of the status detection unit includes: detecting a hardware port.

8. The detection method according to claim 6, characterized in that The interface status of the distributed power supply access unit includes: If the external communication device is unplugged, the interface status of the distributed power access unit is incommunicable; If the state of the external communication device is the plugged in state and the response information of the external communication device is received, the interface state of the distributed power supply access unit is communicable; If the status of the external communication device is the inserted status and no response information is received from the external communication device, the interface status of the distributed power supply access unit is a communication failure.

9. The detection method according to claim 6, characterized in that Also includes: If the state of the external communication device is unplugged, execute step 2 to a preset number of times.

10. The detection method according to claim 8, characterized in that If the status of the external communication device is inserted, and no response information is received from the external communication device, a preset number of retries is performed. If no response information is received from the external communication device after the number of retries, the interface status of the distributed power supply access unit is a communication failure.

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