An intelligent guide rail meter compatible with multiple communication modules and a control method thereof

Abstract

The embodiment of the application provides a kind of compatible multiple communication module's intelligent guide rail meter and control method, and the intelligent guide rail meter includes guide rail meter main body and external communication module.External communication module is detachably connected with guide rail meter main body, and metering core unit and main control unit are arranged in guide rail meter main body.Metering core unit is used to collect the metering result of the electric energy parameter generated by guide rail meter main body;Main control unit is used to identify the communication type of external communication module, determine the corresponding target compensation parameter from the metering compensation parameter based on the communication type, and compensate the metering result based on the target compensation parameter.The control method of the compatible multiple communication module's intelligent guide rail meter can realize the general compatibility of multiple communication modules, can be automatically adapted and kept accurate after replacing communication module, while flexibly meeting the communication needs of different scenes, ensure the high precision and high reliability of measurement.

Description

Technical Field

[0001] This application relates to the field of intelligent guide rail gauge technology, and in particular to an intelligent guide rail gauge and control method compatible with multiple communication modules. Background Technology

[0002] Existing intelligent rail gauges mostly use built-in fixed communication modules, which cannot be flexibly replaced according to on-site communication conditions. When the on-site communication method changes, the entire rail gauge needs to be replaced, which is costly and wasteful. Although some rail gauges support replaceable communication modules, they are prone to problems such as inconsistent interfaces, incompatibility between different communication modules, and decreased measurement accuracy after replacement, making it difficult to meet the national standards for measurement accuracy and communication reliability. Summary of the Invention

[0003] This application provides an intelligent guide rail meter and control method compatible with multiple communication modules. It can achieve universal compatibility with multiple communication modules, automatically adapt to and maintain measurement accuracy after module replacement, and ensure high accuracy and high reliability of measurement while flexibly meeting the communication needs of different scenarios.

[0004] This application provides an intelligent guide rail meter compatible with multiple communication modules, including a guide rail meter body and an external communication module, wherein the external communication module is detachably connected to the guide rail meter body; The main body of the guide rail meter is equipped with a metering core unit and a main control unit; The metering core unit is used to store calibration compensation parameters and collect metering results of electrical energy parameters generated by the main body of the guide rail meter; The main control unit is used to identify the communication type of the external communication module connected to the main body of the guide rail meter, determine the corresponding target compensation parameter from the calibration compensation parameters based on the communication type, and compensate the measurement result based on the target compensation parameter.

[0005] In some embodiments, the main control unit includes a module identification circuit, a proprietary communication protocol parsing module, and a metering data processing module: A module identification circuit is connected to a module type identification pin for connecting an external communication module. It is used to determine whether the external communication module is inserted into the main body of the guide rail by detecting the level change of the module type identification pin. A private communication protocol parsing module is used to parse the data frames sent by the external communication module and obtain the communication type of the external communication module; The metering data processing module is used to determine the corresponding target compensation parameter from the calibration compensation parameters according to the identified communication type, and to compensate the metering result based on the target compensation parameter.

[0006] In some embodiments, the metering core unit includes a metering sampling circuit, a metering calibration module, and a metering SOC chip; Metering and sampling circuit, used to collect electrical energy parameters; The metrology calibration module is used to store the calibration compensation parameters; The metering SOC chip is connected to the metering sampling circuit, the metering calibration module, and the main control unit. It is used to meter the electrical energy parameters, determine the metering results corresponding to the electrical energy parameters, and send the metering results and the calibration compensation parameters to the main control unit.

[0007] In some embodiments, the calibration compensation parameters include at least one of gain compensation, offset compensation, and phase compensation.

[0008] In some embodiments, the external communication module includes at least one of a 4G communication module, a carrier communication module (adaptive to G3 band and FCC band), and a BPLC carrier communication module.

[0009] In some embodiments, the main body of the guide rail meter is further provided with a power management unit, which is connected to the metering core unit and the main control unit. The power management unit includes an AC-DC converter and a high-frequency isolation transformer. The high-frequency isolation transformer outputs two mutually isolated DC power supplies as a first power supply and a second power supply. The first power supply is used to power the metering core unit, and the second power supply is used to power the external communication module.

[0010] In some embodiments, the guide rail gauge body is also provided with a standardized communication interface; The standardized communication interface adopts a foolproof structure, supporting hot-swapping and stable connection of the external communication module. The main control unit is connected to the external communication module through the standardized communication interface, and the communication module type is determined based on the signal detected by the standardized communication interface. The metering core unit and the standardized communication interface are connected by an isolation communication circuit to achieve physical isolation between the metering part and the communication part.

[0011] In some embodiments, the isolated communication circuit is a capacitively coupled communication isolation circuit.

[0012] In some embodiments, the guide rail body includes a mounting housing and a plug-in slot disposed on the mounting housing. The plug-in slot is provided with a snap-fit ​​assembly and a connector for mechanically connecting the external communication module. The standardized communication interface is disposed in the plug-in slot.

[0013] This application embodiment also provides a control method for a smart rail meter compatible with multiple communication modules, applied to the smart rail meter compatible with multiple communication modules described in any of the above embodiments, the control method comprising: Check if an external communication module is connected to the main body of the guide rail meter; When an external communication module is detected to be connected, the communication type of the connected external communication module is identified. The corresponding target compensation parameter is determined from the pre-stored calibration compensation parameters based on the communication type. The metering results corresponding to the electrical energy parameters collected by the main body of the guide rail meter are compensated based on the target compensation parameters.

[0014] This application provides an intelligent guide rail meter and control method compatible with multiple communication modules. By using a built-in metering core unit and a main control unit as the core units and an external standardized communication interface, it achieves universal compatibility with multiple communication modules. After replacing the communication module, it can automatically adapt and maintain metering accuracy. While flexibly meeting the communication needs of different scenarios, it ensures high accuracy and high reliability of metering. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a functional block diagram of the intelligent guide rail system according to an embodiment of this application.

[0017] Figure 2 This is a functional block diagram of the intelligent guide rail meter in a practical application of this application embodiment.

[0018] Figure 3 This is a flowchart of the intelligent guide rail control method according to an embodiment of this application.

[0019] Figure 4 This is a diagram illustrating the identification and calibration compensation judgment of the communication module in the control method of this application embodiment. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] This application provides an intelligent guide rail meter that is compatible with multiple communication modules and can maintain measurement accuracy even after the communication module is replaced.

[0022] This application provides an intelligent guide rail meter compatible with multiple communication modules, such as... Figure 1 As shown, the smart rail meter includes a rail meter body and an external communication module, and the external communication module is detachably connected to the rail meter body; The main body of the guide rail meter is equipped with a metering core unit and a main control unit; The metering core unit is used to store calibration compensation parameters and determine the metering results corresponding to the electrical energy parameters collected by the main body of the guide rail meter. The main control unit is used to identify the communication type of the external communication module connected to the main body of the guide rail meter, determine the corresponding target compensation parameter from the calibration compensation parameters based on the communication type, and compensate the measurement result based on the target compensation parameter.

[0023] In one example, reference Figure 1 The intelligent guide rail meter contains a metering core unit and a main control unit. These two units are two crucial processing modules within the meter. The main control unit can be integrated into the metering core unit or be a separate chip; the two are electrically connected via internal wiring. It's important to note that these two different locations do not affect the functionality of the metering core unit and the main control unit. This application uses the example of the main control unit being integrated into the metering core unit for illustration, but this does not constitute a limitation on the technical solution of this application.

[0024] To ensure the accuracy of the smart rail meter's measurement results, the core measurement unit can adopt an independent PCB layout, making the measurement sampling circuit an independently shielded design. This isolates it from other circuits within the smart rail meter body, eliminating direct electrical coupling and preventing interference from other circuits. The main control unit can automatically detect calibration compensation parameters such as module phase, eliminating errors introduced by electrical differences between different modules from the software side, ensuring that measurement accuracy is unaffected by module replacement.

[0025] The metering core unit provides a high-precision hardware base with strong anti-interference capabilities, while the main control unit provides a flexible adaptive compensation algorithm. The combination of the metering core unit and the main control unit is the basis for the intelligent guide rail meter to achieve compatibility with multiple communication modules and maintain accuracy.

[0026] In practical applications, the metering core unit has a built-in storage module, ensuring that calibration compensation parameters are not lost or modified when the communication module is replaced. The main control unit monitors the stability of the metering data in real time and automatically activates the corresponding calibration compensation based on the communication module type, ensuring that the metering accuracy of the smart rail meter meets the standards.

[0027] In some embodiments, the metering core unit includes a metering sampling circuit, a metering calibration module, and a metering SOC chip; The metering and sampling circuit is used to collect electrical energy parameters; The metrology calibration module is used to store the calibration compensation parameters; The metering SOC chip is connected to the metering sampling circuit, the metering calibration module and the main control unit, and is used to meter the electrical energy parameters, determine the metering results corresponding to the electrical energy parameters, and send the metering results and the calibration compensation parameters to the main control unit.

[0028] In one example, the metering sampling circuit includes a voltage sampling circuit and a current sampling circuit, which are responsible for collecting electrical energy parameters such as voltage and current from the smart rail meter. After completing high-precision acquisition, the metering sampling circuit can send the collected electrical energy parameters to the metering SOC chip.

[0029] In practical applications, a dedicated microcontroller (such as an MCU) can be integrated inside the metering SOC chip. After the metering sampling circuit sends the collected energy parameters to the metering SOC chip, the metering management unit (EMU) built into the metering SOC chip calculates key parameters such as the effective value of voltage, the effective value of current, active power, reactive power, power factor, active energy, and reactive energy.

[0030] Since uncompensated raw measurement results are only applicable to a single communication module, the accuracy of the measurement results will decrease after the communication module is changed due to the lack of compensation. Therefore, the core measurement unit also includes a measurement calibration module to ensure that the measurement accuracy is not affected after the communication module is replaced. The measurement calibration module can pre-store multiple sets of calibration compensation parameters for different communication module types, so that the corresponding calibration compensation parameters can be called later according to different communication module types.

[0031] The metering core unit is the foundation for the high-precision metering of the smart rail meter. It collects the metering results of the electrical energy parameters generated by the main body of the smart rail meter and sends these results to the main control unit for subsequent operations.

[0032] In practical applications, the core metering unit identifies the type of the external communication module and calls the internal calibration compensation parameters that match it for compensation. Simultaneously, the application of a high-precision metering SOC chip ensures that the metering accuracy of the guide rail meter remains unaffected after replacing different communication modules, meeting metering standards and addressing the pain point of decreased metering accuracy after module replacement in existing technologies.

[0033] In some embodiments, the main control unit includes a module identification circuit, a proprietary communication protocol parsing module, and a metering data processing module: The module identification circuit is connected to the module type identification pin for connecting the external communication module, and is used to determine whether the external communication module is inserted into the guide rail body by detecting the level change of the module type identification pin; A private communication protocol parsing module is used to parse the data frames sent by the external communication module and obtain the communication type of the external communication module; The metering data processing module is used to determine the corresponding target compensation parameter from the calibration compensation parameters according to the identified communication type, and to compensate the metering result based on the target compensation parameter.

[0034] In one example, a pre-configured communication protocol exists within the private communication protocol parsing module. When an external communication module is connected to the smart rail meter, the external communication module sends data frames to the smart rail meter. These data frames are received and parsed by the private communication protocol parsing module to obtain module type information.

[0035] The module identification circuit is used to determine whether an external communication module is inserted. When no external communication module is inserted, the pin of the module identification circuit is in a high-level state. When an external communication module is inserted, the pin of the module identification circuit changes from a high-level state to a low-level state.

[0036] The metering data processing module is activated after the private communication protocol parsing module obtains the communication module type information. The private communication protocol parsing module sends the identified communication module type information to the metering data processing module. The metering data processing module then calls the corresponding calibration compensation parameters pre-stored in the metering core unit according to the identified communication module type and performs compensation processing on the metering results.

[0037] The main control unit is used to identify the communication type of the external communication module. It can monitor the stability of the metering data in real time, determine the corresponding target compensation parameter from the calibration compensation parameter based on the communication type, and compensate the metering results based on the target compensation parameter to ensure that the metering accuracy meets the standard.

[0038] In some embodiments, the calibration compensation parameters include at least one of gain compensation, offset compensation, and phase compensation.

[0039] In one example, the calibration compensation parameters include one or more combinations of gain compensation, offset compensation, and phase compensation. Gain compensation can be used to correct amplitude errors, offset compensation can be used to eliminate zero drift, and phase compensation can be used to accurately correct phase angle errors between current and voltage caused by non-ideal circuit characteristics. Phase compensation is particularly important under the influence of the electromagnetic characteristics of different modules. In practical applications, different calibration compensation parameters can be selected according to the different conditions of the smart rail meter to ensure measurement accuracy.

[0040] The calibration compensation parameters can correct measurement errors caused by differences in the characteristics of different communication modules from multiple dimensions. Among them, phase compensation can effectively correct the phase angle deviation of current and voltage, and significantly improve the measurement accuracy.

[0041] In some embodiments, the external communication module includes at least one of a 4G communication module, a carrier communication module (adaptive to G3 band and FCC band), and a BPLC carrier communication module.

[0042] In one example, the external communication module is a common communication module in practical applications, including at least one of a 4G communication module, a carrier communication module (adaptive to G3 and FCC bands), and a BPLC carrier communication module. The module type identification pin identifies the communication module type through different voltage levels or encoding, achieving simple and reliable module type differentiation. This facilitates accurate system identification of module types, enabling rapid module identification and automatic matching. This allows the smart rail meter to operate stably in different communication environments, improving the system's versatility and intelligence.

[0043] It should be noted that the smart rail meter processes different communication modules in the same way after they are connected. Therefore, in this application embodiment, the above-mentioned different types of communication modules are collectively referred to as external communication modules.

[0044] In some embodiments, the main body of the guide rail meter is further provided with a power management unit, which is connected to the metering core unit and the main control unit. The power management unit includes an AC-DC converter and a high-frequency isolation transformer. The high-frequency isolation transformer outputs two mutually isolated DC power supplies as a first power supply and a second power supply. The first power supply is used to power the metering core unit, and the second power supply is used to power the external communication module.

[0045] The power management unit is used to connect to an external power source to provide power, which can provide a stable energy supply for smart rail meters.

[0046] In one example, the power management unit includes an AC-DC converter and a high-frequency isolation transformer. When the power management unit is connected to a power source, the AC-DC converter first converts the AC power to DC power. This DC power then supplies the high-frequency isolation transformer. The key function of the high-frequency isolation transformer is that its secondary winding is designed with two independently insulated windings, outputting two isolated DC power supplies: a first power supply A (Power Supply A Path) and a second power supply B (Power Supply B Path). Power Supply A is dedicated to powering the metering core unit, ensuring the purity of the power supply to the metering sampling circuit. Power Supply B, on the other hand, independently powers an external communication module through a standardized communication interface.

[0047] This power supply scheme of the power management unit achieves dual physical isolation between the metering sampling circuit and the communication circuit at the power level, preventing current fluctuations and noise from the communication module from coupling to the metering sampling circuit through the power line. In practical applications, even if the communication module fails or short-circuits, it will not affect the basic functions and accuracy of the core metering part of the base meter, greatly improving the reliability and safety of the equipment.

[0048] In practical applications, the power management unit supplies power to the metering core unit, main control unit, and standardized communication interface, providing overvoltage, overcurrent, and surge protection. Simultaneously, the power management unit provides stable power to the external communication module, and the power circuit is independent of the metering sampling circuit to avoid power supply interference affecting metering.

[0049] In some embodiments, the guide rail gauge body is also provided with a standardized communication interface; The standardized communication interface adopts a foolproof structure, supporting hot-swapping and stable connection of the external communication module. The main control unit is connected to the external communication module through the standardized communication interface, and the communication module type is determined based on the signal detected by the standardized communication interface. The metering core unit and the standardized communication interface are connected by an isolation communication circuit to achieve physical isolation between the metering part and the communication part.

[0050] In one example, the smart rail meter body also features a standardized communication interface for connecting the communication module and the smart rail meter body. In practical applications, the standardized communication interface employs a foolproof design, meaning the housing shape and pin arrangement are unique, ensuring the module cannot be inserted incorrectly or misaligned. Simultaneously, the standardized communication interface supports hot-swapping and secure connection of external communication modules. When the smart rail meter is powered on or operating normally, directly inserting or removing the external communication module will automatically recognize the connection and allow the smart rail meter to continue operating normally without needing to be shut down or restarted, greatly simplifying the operation.

[0051] In one example, the metering core unit needs to be electrically isolated from other circuits in the smart rail meter to ensure the accuracy of the metering results. However, the metering core unit also needs to receive information from the standardized communication interface. Therefore, the standardized communication interface can be connected to the metering core unit through an isolated communication circuit. This achieves both physical isolation between the metering and communication parts and enables data transmission.

[0052] In one example, the standardized communication interface includes power pins, data transmission pins, module type identification pins, and reset control pins. These pins are defined with different functions to enable the standardized communication interface to connect and transmit information between the smart rail meter body and the external communication module.

[0053] The power pins are mainly used by the power management unit, which can supply power to external communication modules by connecting to the power pins.

[0054] The data transmission pins and module type identification pins primarily function for the main control unit. The data transmission pins enable data transmission between the standardized interface and the main control unit.

[0055] The module type identification pin is set to go low when the communication module is inserted and return to high when the communication module is removed. This simple and reliable level change serves as the trigger signal for the main control unit to detect the insertion or removal of the communication module.

[0056] In practical applications, the standardized communication interface can be the CON3 socket in the main body of the DIN rail meter. By connecting the metering core unit and the main control unit, the level of automation adaptation is further improved. The isolation of the communication circuit achieves physical isolation between the metering and communication parts, blocking external interference and ensuring metering stability and accuracy.

[0057] In some embodiments, the isolated communication circuit is a capacitively coupled communication isolation circuit.

[0058] In one example, the isolation communication circuit used to connect the standardized communication interface and the metering core unit is preferably a capacitively coupled communication isolation circuit.

[0059] Capacitive coupling communication isolation circuits can transmit signals using the principle of capacitive coupling. They can transmit data and withstand voltages of up to several thousand volts, blocking interference that may be introduced on the communication side, thus ensuring the stability and accuracy of measurement from a physical perspective.

[0060] In some embodiments, the guide rail body includes a mounting housing and a plug-in slot disposed on the mounting housing. The plug-in slot is provided with a snap-fit ​​assembly and a connector for mechanically connecting the external communication module. The standardized communication interface is disposed in the plug-in slot.

[0061] In one example, the main body of the guide rail meter also includes a mounting housing and a plug-in slot on the mounting housing. The back of the mounting housing is designed with a standard 35mm guide rail clip, which allows for easy installation and removal in practical applications. The top of the mounting housing has a plug-in slot, inside which the aforementioned standardized communication interface is located. The clips and connectors in the plug-in slot match the main body's slot, allowing for plug-in installation and quick replacement without tools.

[0062] The smart rail meter provided in this embodiment is compatible with multiple communication modules. It uses a built-in metering core unit and a main control unit as its core units, and an external standardized communication interface, achieving universal compatibility with various communication modules. It can automatically adapt and maintain metering accuracy after module replacement, flexibly meeting the communication needs of different scenarios while ensuring high precision and reliability in metering. Simultaneously, the smart rail meter also has a power management unit, which can be connected to an external power source to provide power, ensuring a stable energy supply and greatly improving the operability of the smart rail meter.

[0063] As an example, such as Figure 2 As shown. In practical applications, the core metering unit of a smart rail meter can include a metering chip (SOC), voltage sampling circuit, current sampling circuit, and metering calibration module, responsible for high-precision acquisition and measurement of parameters such as voltage, current, active / reactive energy, and power. The metering core unit adopts an independent PCB layout, and the communication circuit and metering circuit have no direct electrical coupling; data transmission is carried out through a capacitively isolated UART circuit. This layout of the metering core unit ensures the reliable operation of the meter and the personal safety of personnel when the communication module of the smart rail meter is replaced. The metering core unit can also have a built-in calibration parameter storage module, so that the calibration parameters are not lost or modified when the communication module is replaced.

[0064] The main control unit monitors the stability of power parameters in real time and automatically activates the corresponding communication module's calibration compensation based on the communication module type to ensure metering accuracy standards. In practical applications, the main control unit can have multiple built-in protocol stacks, supporting protocols such as DL / T645, 4G, G3-PLC, and BPLC. It can convert power parameters into corresponding communication formats and upload them to the concentrator or cloud platform via an external communication module.

[0065] The AC-DC power supply section of the power management unit is fed into two isolated DC power supplies, A and B, after passing through a high-frequency isolation transformer. Power supply A powers the SOC managed by the metering core unit, while power supply B powers the external communication module. The two power supply windings are isolated and can withstand AC voltage testing up to 4KV. Physical isolation and communication interference isolation are ensured, and communication is achieved through dual UART serial ports using a U3 capacitive coupling communication system. Specifically, UARTTX1 represents the smart rail meter outputting signals to the communication module, and UARTRX1 represents the communication module inputting signals to the smart rail meter.

[0066] The standardized communication interface is responsible for identifying the type of communication module being connected and detecting whether a communication module has been inserted into the meter. Once the standardized communication interface detects an external communication module being inserted, it establishes a handshake with the main control unit, actively sending a data frame with a data identifier for the communication module to the main control unit. The main control unit parses the communication module data and, through the communication module's calibration compensation mechanism, calls the calibration compensation parameters (gain / offset / phase compensation). Therefore, after the communication module is inserted into the main interface, the main control unit reads the communication module information through the communication module type identification pin, automatically matching the corresponding communication protocols such as 4G, G3, carrier, and BPLC, without requiring manual configuration, achieving plug-and-play functionality and ensuring metering accuracy.

[0067] In practical applications, the control section of the smart rail meter is also equipped with relay control, which, in conjunction with metering data, quickly cuts off the power supply in case of overload, overvoltage, or leakage, protecting the smart rail meter. The communication interface is equipped with near-infrared communication for reading data or configuring parameters at close range.

[0068] The peripheral components of the smart rail meter are also equipped with a display and operation unit, including an LCD screen, indicator lights, a cover opening button, and a communication module removal detection, which are used to intuitively display the various statuses of the smart rail meter, while also supporting local parameter settings.

[0069] This application also provides a control method for a smart guide rail meter compatible with multiple communication modules, applied to the smart guide rail meter compatible with multiple communication modules described in any of the above embodiments. The following is a detailed description... Figure 3 Figure 4 The control methods will be explained in detail. For example, Figure 3 As shown, the control methods include: S1: Check if an external communication module is connected to the main body of the guide rail meter; S2: When an external communication module is detected to be connected, the communication type of the connected external communication module is identified; S3: Determine the corresponding target compensation parameter from the pre-stored calibration compensation parameters based on the communication type; S4: Compensate the metering results corresponding to the electrical energy parameters collected by the main body of the guide rail meter based on the target compensation parameters.

[0070] First, step S1 is executed to detect whether an external communication module is connected to the standardized communication interface. When the main body of the guide rail meter is powered on, the module identification circuit of the main control unit will go high due to power-on. When the level changes from high to low, it is determined that an external communication module is connected to the standardized communication interface.

[0071] Subsequently, when an external communication module connects to the standardized interface, step S2 is executed. When an external communication module is detected, its type is identified. The external communication module sends data frames to the smart rail meter through the standardized communication interface. These data frames are received and parsed by the private communication protocol parsing module in the main control unit to obtain module type information.

[0072] Subsequently, after obtaining the communication module type information, step S3 is executed. The private communication protocol parsing module will parse out the type of the communication module and send the identified communication type information to the metering data processing module. The metering data processing module will then call the corresponding calibration compensation parameters pre-stored in the metering core unit according to the identified communication type.

[0073] Subsequently, after calling the calibration compensation parameters corresponding to the type, step S4 is executed to compensate the measurement results using the called calibration compensation parameters, thereby applying the calibration algorithm.

[0074] When no external communication module is detected, the smart rail meter uses the default calibration compensation parameters and applies the calibration algorithm based on these parameters. The calibration algorithm aims to convert the acquired electrical parameters (such as ADC sample values) into physical quantities.

[0075] In practical applications, such as Figure 4 As shown, to ensure measurement accuracy, after applying the calibration algorithm, a second check can be performed to verify the validity of the calibration result. If the calibration result is valid, the calibrated data is output. If the calibration result is invalid, it can be checked whether the communication module has been inserted or replaced. If so, return to step S3, re-determine based on the module type, and call the corresponding calibration compensation parameters pre-stored in the measurement core unit after the determination, and re-execute step S4. If not, the calibration result is output.

[0076] The control method for intelligent guide rail meters provided in this embodiment is compatible with multiple communication modules. It can call the dedicated calibration compensation parameters for different communication modules, reducing measurement errors caused by changing different communication modules and ensuring the measurement accuracy of the intelligent guide rail meter. In the description of this application, it should be understood that terms such as "first" and "second" are used only to distinguish similar objects and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0077] The above provides a detailed description of an intelligent guide rail meter and control method compatible with multiple communication modules, as provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there may be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A smart guide rail meter compatible with multiple communication modules, characterized in that, It includes a guide rail meter body and an external communication module, wherein the external communication module is detachably connected to the guide rail meter body; The main body of the guide rail meter is equipped with a metering core unit and a main control unit; The metering core unit is used to store calibration compensation parameters and collect metering results of electrical energy parameters generated by the main body of the guide rail meter; The main control unit is used to identify the communication type of the external communication module connected to the main body of the guide rail meter, determine the corresponding target compensation parameter from the calibration compensation parameters based on the communication type, and compensate the measurement result based on the target compensation parameter.

2. The intelligent guide rail meter compatible with multiple communication modules according to claim 1, characterized in that, The main control unit includes a module identification circuit, a private communication protocol parsing module, and a metering data processing module. A module identification circuit is connected to a module type identification pin for connecting an external communication module. It is used to determine whether the external communication module is inserted into the main body of the guide rail by detecting the level change of the module type identification pin. A private communication protocol parsing module is used to parse the data frames sent by the external communication module and obtain the communication type of the external communication module; The metering data processing module is used to determine the corresponding target compensation parameter from the calibration compensation parameters according to the identified communication module type, and to compensate the metering result based on the target compensation parameter.

3. The intelligent guide rail meter compatible with multiple communication modules according to claim 1, characterized in that, The core metering unit includes a metering sampling circuit, a metering calibration module, and a metering SOC chip; Metering and sampling circuit, used to collect electrical energy parameters; The metrology calibration module is used to store the calibration compensation parameters; The metering SOC chip is connected to the metering sampling circuit, the metering calibration module, and the main control unit. It is used to meter the electrical energy parameters, determine the metering results corresponding to the electrical energy parameters, and send the metering results and the calibration compensation parameters to the main control unit.

4. The intelligent guide rail meter compatible with multiple communication modules according to claim 1, characterized in that, The calibration compensation parameters include at least one of gain compensation, offset compensation, and phase compensation.

5. The intelligent guide rail meter compatible with multiple communication modules according to claim 1, characterized in that, The external communication module includes at least one of a 4G communication module, a carrier communication module (adaptive to G3 band and FCC band), and a BPLC carrier communication module.

6. The intelligent guide rail meter compatible with multiple communication modules according to claim 1, characterized in that, The main body of the guide rail meter is also equipped with a power management unit, which is connected to the metering core unit and the main control unit. The power management unit includes an AC-DC converter and a high-frequency isolation transformer. The high-frequency isolation transformer outputs two mutually isolated DC power supplies as a first power supply and a second power supply. The first power supply is used to power the metering core unit, and the second power supply is used to power the external communication module.

7. The intelligent guide rail meter compatible with multiple communication modules according to claim 1, characterized in that, The main body of the guide rail gauge is also equipped with a standardized communication interface; The standardized communication interface adopts a foolproof structure, supporting hot-swapping and stable connection of the external communication module. The main control unit is connected to the external communication module through the standardized communication interface, and the communication module type is determined based on the signal detected by the standardized communication interface. The metering core unit and the standardized communication interface are connected by an isolation communication circuit to achieve physical isolation between the metering part and the communication part.

8. The intelligent guide rail meter compatible with multiple communication modules according to claim 7, characterized in that, The isolated communication circuit is a capacitively coupled isolated communication circuit.

9. The intelligent guide rail meter compatible with multiple communication modules according to claims 1-8, characterized in that, The main body of the guide rail includes a mounting housing and a plug-in slot provided on the mounting housing. The plug-in slot is provided with a snap-fit ​​assembly and a connector for mechanically connecting the external communication module. The standardized communication interface is located in the plug-in slot.

10. A control method for an intelligent guide rail gauge, characterized in that, The control method applied to the smart rail meter compatible with multiple communication modules as described in claims 1-9 includes: Check if an external communication module is connected to the main body of the guide rail meter; When an external communication module is detected to be connected, the communication type of the connected external communication module is identified. The corresponding target compensation parameter is determined from the pre-stored calibration compensation parameters based on the communication type. The metering results corresponding to the electrical energy parameters collected by the main body of the guide rail meter are compensated based on the target compensation parameters.

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