Solar water heating system cluster operation and maintenance and fault diagnosis system based on digital twinning

Abstract

The invention relates to the technical field of cluster operation, maintenance and fault diagnosis of a solar water heating system, and discloses a cluster operation, maintenance and fault diagnosis system of a solar water heating system based on digital twinning. The operation, maintenance and diagnosis system comprises a sensing terminal, a multi-source data processing and transmission module, a cluster operation and maintenance management module, a fault diagnosis module and a fault early warning module, and the sensing terminal comprises a data acquisition module, a radar integration module, a satellite positioning module, a Lora communication module and a direct current power supply module. The multi-source data processing and transmission module comprises an edge preprocessing engine and a protocol conversion gateway; the fault early warning module comprises a background server early warning unit and a maintenance information distribution unit; the data acquisition module comprises a temperature sensor, a flow meter, a pressure sensor and an irradiance instrument; through the system, the fault identification accuracy and the fault maintenance efficiency of the solar water heater can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cluster operation and maintenance and fault diagnosis of solar water heating systems, and specifically relates to a cluster operation and maintenance and fault diagnosis system of solar water heating systems based on digital twins. Background Art

[0002] A solar water heating system cluster is a large-scale hot water supply network consisting of multiple solar water heating system units interconnected through a centralized control and management platform. Its core goal is to achieve coordinated allocation of heat energy and efficient operation and maintenance within a region.

[0003] Existing systems mostly rely on manual inspections, such as checking for pipe blockages and sensor calibration. The fault response time is long and the misjudgment rate is high. The single-machine system lacks the ability to fuse multi-source data, such as collaborative analysis of temperature, pressure, and irradiance. This leads to hidden faults, such as microcracks in the collector and decreased efficiency of the circulation pump, which are difficult to detect in a timely manner. Therefore, the fault identification accuracy and fault repair efficiency are poor.

[0004] To this end, we propose a cluster operation, maintenance and fault diagnosis system for solar water heating systems based on digital twins. Summary of the Invention

[0005] The purpose of the present invention is to provide a solar water heating system cluster operation and maintenance and fault diagnosis system based on digital twin in order to improve the accuracy of fault identification and the efficiency of fault repair of solar water heaters.

[0006] The technical solution adopted in the present invention is as follows: A solar water heating system cluster operation and maintenance and fault diagnosis system based on digital twins, including an operation and maintenance and diagnosis system, which includes a sensing terminal, a multi-source data processing and transmission module, a cluster operation and maintenance management module, a fault diagnosis module, and a fault warning module. The sensing terminal includes a data acquisition module, a radar integration module, a satellite positioning module, a Lora communication module, and a DC power supply module. The multi-source data processing and transmission module includes an edge preprocessing engine and a protocol conversion gateway. The fault warning module includes a background server warning unit and a maintenance information distribution unit. The data acquisition module includes a temperature sensor, a flow meter, a pressure sensor and an irradiance meter.

[0007] In a preferred embodiment of the invention, the temperature sensor is used to collect the water temperature at the inlet and outlet of the collector in real time, and to identify pipeline blockage or heat exchange efficiency attenuation through temperature gradient changes; the flow meter is used to measure the instantaneous flow of the circulation pipeline, and to calculate the heat energy transfer efficiency in combination with the temperature data; the pressure sensor is used to monitor the pressure of the circulation network, and to trigger the pressure relief valve protection mechanism when overpressure occurs; the irradiance meter is used to measure the total solar radiation as a benchmark parameter for system thermal efficiency evaluation, and to generate an irradiance time series graph.

[0008] In a preferred embodiment of the invention, the radar integrated module is used to scan the surface deformation of the collector in real time, identify the microstructure distortion of the surface, and prevent the glass tube from breaking due to thermal stress.

[0009] In a preferred embodiment of the invention, the satellite positioning module is used to provide spatial dimension data support for the operation and maintenance and fault diagnosis of the solar water heating system cluster.

[0010] In a preferred embodiment of the invention, the Lora communication module is used to realize long-range, low-power, stable wireless communication functions, and the DC power supply module is used to provide a stable and reliable DC power supply for the entire terminal.

[0011] In a preferred embodiment of the invention, the edge preprocessing engine is used to filter high-frequency noise from sensors in real time, and automatically eliminate outliers in combination with the rule engine to optimize data quality; the protocol conversion gateway is used to support unified parsing of Modbus, MQTT and LoRaWAN industrial protocols, converting heterogeneous data from devices such as photovoltaic inverters and temperature sensors into the standard OPC UA format, compatible with the access requirements of devices of different brands.

[0012] In a preferred invention mode, the cluster operation and maintenance management module uses three-dimensional modeling technology to display the topological structure and operating status of all photovoltaic arrays, heat pump units and water storage tanks in the cluster in real time, supports dynamic equipment positioning and parameter drilling analysis, and integrates a meteorological data prediction module to simulate and manage the system energy efficiency distribution under different light intensities and ambient temperatures.

[0013] In a preferred invention mode, the fault diagnosis module can construct a baseline of the equipment operation status based on the data collected by the data acquisition module, deploy a lightweight LSTM model based on the edge computing node, analyze unstructured data such as equipment voiceprints and vibration spectra in real time, extract abnormal feature vectors, and then associate multiple device operation data through a Bayesian network based on the fault knowledge graph to locate the source of the fault.

[0014] In a preferred embodiment of the invention, the background server early warning unit is used to issue fault warnings to the staff who monitor the solar water heater cluster in the background, and the maintenance information sending unit is used to send the location, cause of the fault and relevant contact information of the faulty solar water heater to the maintenance staff's mobile phone to facilitate rapid maintenance and repair.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, the temperature sensor, flow meter, pressure sensor and radar integrated module work together to achieve full-dimensional monitoring from thermodynamic parameters to physical deformation, and provide geographic coordinate data for cluster equipment through the satellite positioning module, supporting the rapid location of faulty equipment. It is particularly suitable for the distributed management of solar water heating systems in remote areas, realizing multi-dimensional data fusion and high-precision monitoring, and improving the accuracy of fault identification.

[0016] 2. In this invention, an edge preprocessing engine is used to filter sensor noise in real time, eliminate abnormal data, and optimize data quality. The LoRa communication module is used to implement a remote, low-power protocol conversion gateway to uniformly parse Modbus, MQTT and other protocols, reducing data conversion delays, achieving compatibility with multi-brand device access efficiency, and reducing data transmission delays, thereby improving the efficiency of subsequent solar water heater fault repairs.

[0017] 3. In the present invention, the cluster operation and maintenance management module uses three-dimensional modeling technology to map the equipment topology in real time, combines meteorological forecast data to dynamically simulate energy efficiency distribution, assists in generating the optimal maintenance path, and pushes alarm information to the operation and maintenance personnel terminal in real time through the background server early warning unit. The maintenance information distribution unit simultaneously sends the fault location, cause and maintenance plan, thereby improving the efficiency of solar water heater fault repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a system diagram of the present invention. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] The following will be combined Figure 1 A solar water heating system cluster operation, maintenance and fault diagnosis system based on digital twins according to an embodiment of the present invention is described in detail. Example

[0021] Reference Figure 1 , a solar water heating system cluster operation and maintenance and fault diagnosis system based on digital twin, including an operation and maintenance and diagnosis system, the operation and maintenance and diagnosis system includes a perception terminal, a multi-source data processing and transmission module, a cluster operation and maintenance management module, a fault diagnosis module and a fault warning module, the perception terminal includes a data acquisition module, a radar integration module, a satellite positioning module, a Lora communication module and a DC power supply module, the multi-source data processing and transmission module includes an edge preprocessing engine and a protocol conversion gateway, the fault warning module includes a background server warning unit and a maintenance information distribution unit; the data acquisition module includes a temperature sensor, a flow meter, a pressure sensor and an irradiance meter; specifically, through the technical architecture of "multi-source perception-edge intelligence-cluster collaboration-closed-loop control", the full life cycle management of the solar water heating system cluster is realized, and the fault identification accuracy and the fault repair efficiency of solar water heaters are significantly improved.

[0022] Reference Figure 1 The temperature sensor is used to collect the water temperature at the inlet and outlet of the collector in real time, and identify pipeline blockage or heat exchange efficiency attenuation through temperature gradient changes; the flow meter is used to measure the instantaneous flow of the circulation pipeline, and calculate the heat energy transfer efficiency in combination with the temperature data; the pressure sensor is used to monitor the pressure of the circulation pipeline network, and trigger the pressure relief valve protection mechanism when overpressure occurs; the irradiance meter is used to measure the total solar radiation, which is used as a benchmark parameter for system thermal efficiency evaluation to generate an irradiance time series map; the radar integrated module is used to scan the surface deformation of the collector in real time, identify the microstructure distortion of the surface, and prevent the glass tube from breaking due to thermal stress; specifically, through the coordinated work of the temperature sensor, flow meter, pressure sensor and radar integrated module, full-dimensional monitoring from thermodynamic parameters to physical deformation is realized, and the satellite positioning module is used to provide geographic coordinate data for cluster equipment, supporting rapid positioning of faulty equipment, which is particularly suitable for distributed management of solar water heating systems in remote areas, realizing multi-dimensional data fusion and high-precision monitoring, and improving the accuracy of fault identification.

[0023] Reference Figure 1The satellite positioning module is used to provide spatial data support for the operation and maintenance and fault diagnosis of the solar water heating system cluster. The Lora communication module is used to realize remote, low-power, stable wireless communication functions. The DC power supply module is used to provide a stable and reliable DC power supply for the entire terminal. The edge preprocessing engine is used to filter the high-frequency noise of the sensor in real time, and automatically remove outliers in combination with the rule engine to optimize data quality. The protocol conversion gateway is used to support the unified parsing of Modbus, MQTT and LoRaWAN industrial protocols, and convert heterogeneous data of photovoltaic inverters, temperature sensors and other equipment into standard OPC UA format, which is compatible with the access requirements of equipment of different brands. Specifically, the edge preprocessing engine is used to filter sensor noise in real time, eliminate abnormal data, and optimize data quality. The LoRa communication module is used to realize remote, low-power protocol conversion gateway to unify the parsing of Modbus, MQTT and other protocols, reduce data conversion delay, and be compatible with the access efficiency of multi-brand equipment, reduce data transmission delay, and thus improve the subsequent fault repair efficiency of solar water heaters.

[0024] Reference Figure 1 The cluster operation and maintenance management module uses three-dimensional modeling technology to display the topological structure and operating status of all photovoltaic arrays, heat pump units and water storage tanks in the cluster in real time, supports dynamic equipment positioning and parameter drilling analysis, and integrates a meteorological data prediction module to simulate and manage the system energy efficiency distribution under different light intensities and ambient temperatures; the fault diagnosis module can build an equipment operating status baseline based on the data collected by the data acquisition module, deploy a lightweight LSTM model based on the edge computing node, and analyze unstructured data such as equipment voiceprints and vibration spectra in real time to extract abnormal feature vectors, and then associate multiple equipment operating data through the Bayesian network based on the fault knowledge graph to locate the source of the fault; The backend server early warning unit is used to issue fault warnings to the staff who monitor the solar water heater cluster in the background, and the maintenance information sending unit is used to send the location of the faulty solar water heater, the cause of the fault and the information of the relevant contacts to the maintenance staff's mobile phone so as to carry out rapid maintenance and repair; specifically, the cluster operation and maintenance management module uses three-dimensional modeling technology to map the equipment topology structure in real time, combines meteorological forecast data to dynamically simulate the energy efficiency distribution, assists in generating the optimal maintenance path, and pushes alarm information to the operation and maintenance personnel terminal in real time through the backend server early warning unit. The maintenance information distribution unit simultaneously sends the fault location, cause and maintenance plan to improve the efficiency of solar water heater fault repair.

[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention 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 various embodiments of the present invention.

Claims

1. A solar water heating system cluster operation and maintenance and fault diagnosis system based on digital twins, including an operation and maintenance and diagnosis system, which includes a sensing terminal, a multi-source data processing and transmission module, a cluster operation and maintenance management module, a fault diagnosis module, and a fault warning module, characterized by: The sensing terminal includes a data acquisition module, a radar integration module, a satellite positioning module, a Lora communication module and a DC power supply module. The multi-source data processing and transmission module includes an edge preprocessing engine and a protocol conversion gateway. The fault warning module includes a background server warning unit and a maintenance information distribution unit. The data acquisition module includes a temperature sensor, a flow meter, a pressure sensor and an irradiance meter.

2. The solar water heating system cluster operation, maintenance and fault diagnosis system based on digital twin according to claim 1, characterized in that: The temperature sensor is used to collect the water temperature of the collector inlet and outlet in real time, and identify pipeline blockage or heat exchange efficiency attenuation through temperature gradient changes; the flow meter is used to measure the instantaneous flow of the circulation pipeline and calculate the heat energy transfer efficiency in combination with the temperature data; the pressure sensor is used to monitor the pressure of the circulation pipeline network and trigger the pressure relief valve protection mechanism when overpressure occurs; the irradiance meter is used to measure the total solar radiation, which serves as a benchmark parameter for system thermal efficiency evaluation and generates an irradiance time series graph.

3. The solar water heating system cluster operation, maintenance and fault diagnosis system based on digital twin according to claim 1, characterized in that: The radar integrated module is used to scan the deformation of the collector surface in real time, identify the microstructure distortion of the surface, and prevent the glass tube from breaking due to thermal stress.

4. The solar water heating system cluster operation, maintenance and fault diagnosis system based on digital twin according to claim 1, characterized in that: The satellite positioning module is used to provide spatial dimension data support for the operation and maintenance and fault diagnosis of the solar water heating system cluster.

5. The solar water heating system cluster operation, maintenance and fault diagnosis system based on digital twin according to claim 1, characterized in that: The Lora communication module is used to realize long-range, low-power, stable wireless communication functions, and the DC power supply module is used to provide a stable and reliable DC power supply for the entire terminal.

6. The solar water heating system cluster operation, maintenance and fault diagnosis system based on digital twin according to claim 1, characterized in that: The edge preprocessing engine is used to filter high-frequency noise from sensors in real time, and combined with the rule engine, automatically eliminates outliers to optimize data quality. The protocol conversion gateway is used to support unified parsing of Modbus, MQTT, and LoRaWAN industrial protocols, converting heterogeneous data from devices such as photovoltaic inverters and temperature sensors into the standard OPC UA format, compatible with the access requirements of devices from different brands.

7. The solar water heating system cluster operation, maintenance and fault diagnosis system based on digital twin according to claim 1, characterized in that: The cluster operation and maintenance management module uses three-dimensional modeling technology to display the topological structure and operating status of all photovoltaic arrays, heat pump units and water storage tanks in the cluster in real time, supports dynamic equipment positioning and parameter drilling analysis, and integrates a meteorological data prediction module to simulate and manage the system energy efficiency distribution under different light intensities and ambient temperatures.

8. The solar water heating system cluster operation, maintenance and fault diagnosis system based on digital twin according to claim 1, characterized in that: The fault diagnosis module can build a device operating status baseline based on the data collected by the data acquisition module, deploy a lightweight LSTM model based on the edge computing node, analyze unstructured data such as device voiceprints and vibration spectra in real time, extract abnormal feature vectors, and then associate multiple device operating data through a Bayesian network based on the fault knowledge graph to locate the source of the fault.

9. The solar water heating system cluster operation, maintenance and fault diagnosis system based on digital twin according to claim 1, characterized in that: The background server warning unit is used to issue fault warnings to the staff who monitor the solar water heater cluster in the background, and the maintenance information sending unit is used to send the location, cause of the fault and relevant contact information of the faulty solar water heater to the maintenance staff's mobile phone to facilitate rapid maintenance and repair.

Images