Safety power supply port power distribution parameter monitoring method and device

Abstract

The application discloses a kind of intrinsic safety power supply port distribution parameter monitoring method and device.Intrinsic safety power supply includes multiple parallel channels, channel includes input port and output port, input port is connected power supply module, and output port supplies power to terminal equipment.The monitoring method of a channel includes: the current parameter of input port and the temperature parameter of intrinsic safety power supply are collected;Obtain the distribution parameter model corresponding to channel;The current parameter of input port and the temperature parameter of intrinsic safety power supply are substituted into distribution parameter model, and the current parameter of output port, the voltage parameter of output port and the power parameter of output port are obtained.The application does not need to add sampling circuit on the dangerous side of intrinsic safety power supply, is conducive to reducing the volume of intrinsic safety power supply, shortening the explosion-proof certification cycle, reducing production cost, so as to adapt to the integrated design of intrinsic safety power supply multi-channel, miniaturization.

Description

Technical Field

[0001] This invention relates to the field of intrinsically safe power supply technology, and in particular to a method and apparatus for monitoring the power distribution parameters of an intrinsically safe power supply port. Background Technology

[0002] In industrial explosion-proof applications, intrinsically safe power distribution systems rely on a single cable for power supply and data communication, and are widely used in various explosion-proof conditions. They provide stable power and data exchange for field terminal equipment, serving as a critical infrastructure for the safe and reliable operation of explosion-proof industrial systems. However, with the deepening of industrial digitalization and intelligent transformation, existing intrinsically safe power supplies, constrained by intrinsically safe explosion-proof standards and output energy limits, struggle to perform high-precision, uninterrupted online acquisition of power distribution parameters such as voltage, current, and power at the output ports on the hazardous side. This results in the monitoring performance of intrinsically safe power supply output port power distribution parameters failing to meet the requirements of industrial intelligent control. This is because intrinsically safe explosion-proof systems impose strict threshold limits on energy transmission on the hazardous side. To achieve monitoring of power distribution parameters at the output ports of intrinsically safe power supplies, a dedicated signal acquisition circuit must be installed on the hazardous side of the intrinsically safe power supply, and this circuit must fully comply with intrinsically safe explosion-proof standards.

[0003] Therefore, when monitoring the port power distribution parameters of intrinsically safe power supplies on the dangerous side, existing technologies require the construction of independent sampling and signal transmission circuits on the dangerous side, and the selection of dedicated explosion-proof components such as intrinsically safe isolation transformers and explosion-proof optocouplers. This not only results in a complex sampling circuit architecture and large space occupation, but also has the problems of long explosion-proof certification cycle and high manufacturing cost. It is difficult to adapt to the assembly requirements of multi-channel, miniaturized, and highly integrated intrinsically safe power supplies, which is not conducive to the lightweight mass production and large-scale application of monitoring devices. Summary of the Invention

[0004] This invention provides a method and device for monitoring the power distribution parameters of an intrinsically safe power supply port, in order to solve the problem that adding a sampling circuit to the dangerous side of an intrinsically safe power supply results in a large size of the intrinsically safe power supply, a long explosion-proof certification cycle, high production cost, and difficulty in adapting to the multi-channel, miniaturized integrated design of intrinsically safe power supplies.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: In a first aspect, the present invention provides a method for monitoring the power distribution parameters of an intrinsically safe power supply port. The intrinsically safe power supply includes multiple parallel channels, each channel including an input port and an output port. The input port is used to connect to a power supply module, and the output port is used to supply power to a terminal device. A monitoring method for one of the channels includes: Collect the current parameters of the input port and the temperature parameters of the intrinsically safe power supply; Obtain the power distribution parameter model corresponding to the channel; wherein, the power distribution parameter model includes the temperature parameter of the intrinsically safe power supply, the current parameter of the input port, the current parameter of the output port, the voltage parameter of the output port, and the power parameter of the output port; Substituting the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the power distribution parameter model, we obtain the current parameters of the output port, the voltage parameters of the output port, and the power parameters of the output port.

[0006] Optionally, the power distribution parameter model includes multiple power distribution parameter data tables and multiple power distribution parameter fitting functions; wherein, the multiple power distribution parameter data tables are generated by segmenting according to a preset temperature range and a preset current range; the power distribution parameter fitting functions include a current parameter fitting function for the output port, a voltage parameter fitting function for the output port, and a power parameter fitting function for the output port; The step of substituting the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the power distribution parameter model to obtain the current parameters, voltage parameters, and power parameters of the output port includes: Substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the corresponding power distribution parameter data table, and look up the table to obtain the current parameters of the output port, the voltage parameters of the output port, and the power parameters of the output port; Alternatively, the current parameters of the input port and the temperature parameters of the intrinsically safe power supply can be substituted into the current parameter fitting function to calculate the current parameters of the output port; the current parameters of the input port and the temperature parameters of the intrinsically safe power supply can be substituted into the voltage parameter fitting function to calculate the voltage parameters of the output port; and the current parameters of the input port and the temperature parameters of the intrinsically safe power supply can be substituted into the power parameter fitting function to calculate the power parameters of the output port.

[0007] Optionally, before obtaining the distribution parameter model corresponding to the channel, the method further includes: constructing the distribution parameter model; the construction of the distribution parameter model specifically includes: Collect multiple sets of temperature parameters of the intrinsically safe power supply, multiple sets of current parameters of the input port, multiple sets of current parameters of the output port, multiple sets of voltage parameters of the output port, and multiple sets of power parameters of the output port; The temperature parameters of multiple sets of intrinsically safe power supplies, the current parameters of multiple sets of input ports, the current parameters of multiple sets of output ports, the voltage parameters of multiple sets of output ports, and the power parameters of multiple sets of output ports are fitted to obtain the current parameter surface, the voltage parameter surface, the power parameter surface, the current parameter fitting function, the voltage parameter fitting function, and the power parameter fitting function of the output ports. The current parameter surface, the voltage parameter surface, and the power parameter surface are segmented according to a preset temperature range and a preset current range to generate multiple power distribution parameter data tables corresponding to different segmented ranges of the current parameters of the input ports and the segmented ranges of the temperature parameters of the intrinsically safe power supply.

[0008] Optionally, the channel is externally connected to a load resistor, which is located outside the intrinsically safe power supply and connected to the output port; The acquisition of multiple sets of temperature parameters of the intrinsically safe power supply, multiple sets of current parameters of the input port, multiple sets of current parameters of the output port, multiple sets of voltage parameters of the output port, and multiple sets of power parameters of the output port includes: Multiple sets of temperature parameters of the intrinsically safe power supply are collected within the full operating temperature range of the intrinsically safe power supply. Under the condition that the temperature parameters of each intrinsically safe power supply remain constant, the resistance value of the load resistor is adjusted; under different resistance values ​​of the load resistor, multiple sets of current parameters of the input port, multiple sets of current parameters of the output port, and multiple sets of voltage parameters of the output port are collected. Based on the current parameters and voltage parameters of the output port, multiple sets of power parameters of the output port are calculated.

[0009] Optionally, the step of fitting multiple sets of temperature parameters of the intrinsically safe power supply, multiple sets of current parameters of the input port, multiple sets of current parameters of the output port, multiple sets of voltage parameters of the output port, and multiple sets of power parameters of the output port to obtain a surface for the current parameters of the output port, a surface for the voltage parameters of the output port, a surface for the power parameters of the output port, a fitting function for the current parameters of the output port, a fitting function for the voltage parameters of the output port, and a fitting function for the power parameters of the output port includes: Using the temperature parameter and the current parameter of the input port of the intrinsically safe power supply as two independent variables and the current parameter of the output port as the dependent variable, the temperature parameter, the current parameter of the input port, and the current parameter of the output port of the intrinsically safe power supply are fitted to obtain the current parameter surface of the output port and the current parameter fitting function of the output port. Using the temperature parameter and the current parameter of the input port of the intrinsically safe power supply as two independent variables, and the voltage parameter of the output port as the dependent variable, the temperature parameter, the current parameter of the input port, and the voltage parameter of the output port of the intrinsically safe power supply are fitted to obtain the voltage parameter surface and the voltage parameter fitting function of the output port. Using the temperature parameter and the current parameter of the input port of the intrinsically safe power supply as two independent variables, and the power parameter of the output port as the dependent variable, the temperature parameter, the current parameter of the input port, and the power parameter of the output port are fitted to obtain the power parameter surface and the power parameter fitting function of the output port.

[0010] Optionally, the step of segmenting the current parameter surface, the voltage parameter surface, and the power parameter surface according to a preset temperature range and a preset current range to generate multiple distribution parameter data tables corresponding to different input port current parameter segmentation ranges and intrinsically safe power supply temperature parameter segmentation ranges includes: The temperature parameters, current parameters of the input port, current parameters of the output port, voltage parameters of the output port, and power parameters of the output port of the intrinsically safe power supply are extracted from multiple piecewise surfaces composed of preset temperature ranges and preset current ranges, respectively. The temperature parameters, current parameters of the input port, current parameters of the output port, voltage parameters of the output port, and power parameters of the output port of the intrinsically safe power supply extracted from each segmented surface are stored to generate multiple power distribution parameter data tables corresponding to different segmented intervals.

[0011] Optionally, the channel further includes a current limiting switch, which is disposed between the input port and the output port; After obtaining the current parameters of the output port, the process further includes: The current parameter of the output port is compared with the current safety threshold. If the current parameter of the output port is greater than the current safety threshold, the current limiting switch is controlled to open.

[0012] Optionally, after obtaining the current parameter, voltage parameter, and power parameter of the output port, the method further includes: The current and voltage parameters of the output port are uploaded to the monitor for display.

[0013] Secondly, the present invention also provides a monitoring device for the power distribution parameters of an intrinsically safe power supply port. The intrinsically safe power supply includes multiple parallel channels, each channel including an input port and an output port. The input port is used to connect to a power supply module, and the output port is used to supply power to a terminal device. The device includes at least: The data acquisition module is used to acquire the current parameters of the input port and the temperature parameters of the intrinsically safe power supply. The model acquisition module is used to acquire the power distribution parameter model corresponding to the channel; wherein, the power distribution parameter model includes the temperature parameter of the intrinsically safe power supply, the current parameter of the input port, the current parameter of the output port, the voltage parameter of the output port, and the power parameter of the output port; The parameter calculation module is used to substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the power distribution parameter model to obtain the current parameters, voltage parameters, and power parameters of the output port.

[0014] Optionally, the power distribution parameter model includes multiple power distribution parameter data tables and multiple power distribution parameter fitting functions; wherein, the multiple power distribution parameter data tables are generated by segmenting according to a preset temperature range and a preset current range; the power distribution parameter fitting functions include a current parameter fitting function for the output port, a voltage parameter fitting function for the output port, and a power parameter fitting function for the output port; The parameter calculation module specifically includes: The data lookup unit is used to substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the corresponding power distribution parameter data table, and look up the current parameters, voltage parameters and power parameters of the output port. The data calculation unit is used to substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the current parameter fitting function to calculate the current parameters of the output port; substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the voltage parameter fitting function to calculate the voltage parameters of the output port; and substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the power parameter fitting function to calculate the power parameters of the output port.

[0015] This invention, through collecting current parameters from the input port on the safety side and temperature parameters from the intrinsically safe power supply, substitutes these parameters into a pre-stored power distribution parameter model to obtain the current, voltage, and power parameters of the output port. Therefore, this invention solves the problems of complex circuitry, large equipment size, long explosion-proof certification cycle, high difficulty in power distribution parameter monitoring, and high production costs associated with adding sampling circuits and configuring explosion-proof components on the hazardous side of the intrinsically safe power supply when monitoring the power distribution parameters of the output port. It achieves the advantages of eliminating the need for data acquisition components on the hazardous side of the intrinsically safe power supply, simplifying the hardware architecture, reducing the difficulty of power distribution parameter monitoring, shortening the certification cycle, reducing the overall cost, and facilitating multi-channel, miniaturized, highly integrated, and mass-produced applications of intrinsically safe power supplies. Ultimately, it realizes real-time, accurate, and low-cost monitoring of power distribution parameters at multi-channel intrinsically safe power supply ports.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an intrinsically safe power supply provided in an embodiment of the present invention; Figure 2 This is a flowchart of a method for monitoring the power distribution parameters of an intrinsically safe power supply port according to an embodiment of the present invention; Figure 3 This is a schematic diagram of an implementation of S130 in a method for monitoring the distribution parameters of an intrinsically safe power supply port provided in an embodiment of the present invention; Figure 4 This is a flowchart illustrating the construction of a power distribution parameter model in a method for monitoring intrinsically safe power port power distribution parameters provided in an embodiment of the present invention. Figure 5 This is a flowchart of step S11 in a method for monitoring the power distribution parameters of an intrinsically safe power supply port provided in an embodiment of the present invention; Figure 6 This is a flowchart of step S12 in a method for monitoring the power distribution parameters of an intrinsically safe power supply port provided in an embodiment of the present invention; Figure 7This is a schematic diagram of a current parameter surface provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of a voltage parameter surface provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of a power parameter surface provided in an embodiment of the present invention; Figure 10 This is a flowchart of step S13 in a method for monitoring the power distribution parameters of an intrinsically safe power supply port provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of a graphical user interface of a monitor provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of a monitoring device for intrinsically safe power port distribution parameters provided in an embodiment of the present invention. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] This invention provides a method for monitoring the power distribution parameters of an intrinsically safe power port. This monitoring method can be executed by a device for monitoring the power distribution parameters of an intrinsically safe power port. This device can be implemented in hardware and / or software and can be configured in microcontroller units (MCUs) of various devices requiring intrinsically safe power supplies, such as explosion-proof switches and safety barriers.

[0022] To facilitate explanation, the structure of intrinsically safe power supplies will be briefly described below. Figure 1This is a schematic diagram of an intrinsically safe power supply provided in an embodiment of the present invention. See also: Figure 1 The intrinsically safe power supply 100 includes multiple parallel channels 110. Each channel 110 includes an input port 111 and an output port 112. The input port 111 is used to connect to the power supply module 200, and the output port 112 is used to supply power to the terminal device 300.

[0023] In this design, the intrinsically safe power supply 100 is divided by transformer 113. The area between the primary winding of transformer 113 and input port 111 is the safe side of the intrinsically safe power supply 100, while the area between the secondary winding of transformer 113 and output port 112 is the hazardous side. Input port 111 is the safe side terminal, connected to an external power supply module 200, which provides power to the multiple parallel channels 110. Output port 112 is the hazardous side terminal, connected to the terminal equipment 300 at the explosion-proof site, enabling power supply and data transmission to the terminal equipment 300.

[0024] It should be noted that, Figure 1 This illustration is only intended to show the case where the intrinsically safe power supply 100 includes two parallel channels 110. In actual applications, the number of channels 110 can be set according to the actual situation, and this embodiment of the invention does not limit this.

[0025] The following section provides a detailed explanation of the monitoring methods for the power distribution parameters of intrinsically safe power supply ports. Figure 2 This is a flowchart of a method for monitoring the distribution parameters of an intrinsically safe power supply port according to an embodiment of the present invention. See also... Figure 1 and Figure 2 The monitoring method for channel 110 includes the following steps: S110 collects the current parameters of the input port 111 and the temperature parameters of the intrinsically safe power supply 100.

[0026] The current parameter of input port 111 can be acquired by current sensor 114, which can be installed on the safety side of the line between input port 111 and transformer 113. The temperature parameter of intrinsically safe power supply 100 can be acquired by temperature sensor 300, which is also installed on the safety side of intrinsically safe power supply 100. Both current sensor 114 and temperature sensor 300 are connected to analog-to-digital converter (ADC) 410 in MCU 400. The analog sampling signals output by current sensor 114 and temperature sensor 300 are converted into digital signals by ADC 410 and transmitted to central processing unit (CPU) 420 for parameter calculation.

[0027] In this embodiment of the invention, the current sensor 114 and temperature sensor 300 are both high-precision acquisition components adapted to intrinsically safe explosion-proof standards for selection and layout. They can acquire the current parameters of the input port 111 and the temperature parameters of the intrinsically safe power supply 100 in real time and continuously without modifying the original electrical structure and explosion-proof architecture of the intrinsically safe power supply 100, and without compromising the original explosion-proof rating and safety performance of the intrinsically safe power supply 100. This ensures the accuracy and stability of the acquisition of the current parameters of the input port 111 and the temperature parameters of the intrinsically safe power supply 100 under all operating conditions, providing a reliable raw data foundation for subsequent data fitting and parameter calculation. The MCU 400 is also selected as a low-power, high-integration model that meets intrinsically safe explosion-proof standards, thereby adapting to the miniaturization and high-density layout requirements of the equipment without occupying additional internal space and without affecting the explosion-proof structure of the equipment.

[0028] S120: Obtain multiple power distribution parameter models corresponding to channel 110.

[0029] The power distribution parameter model includes the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, the current parameters of the output port 112, the voltage parameters of the output port 112, and the power parameters of the output port 112.

[0030] Specifically, the power distribution parameter model is a model pre-stored in the memory 430. The power distribution parameter model includes the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, the current parameters of the output port 112, the voltage parameters of the output port 112, and the power parameters of the output port 112, as well as the relationships between these parameters.

[0031] S130. Substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the power distribution parameter model to obtain the current parameters, voltage parameters, and power parameters of output port 112.

[0032] Specifically, the CPU 420 inputs the current parameters of input port 111 and the temperature parameters of the intrinsically safe power supply 100 into the power distribution parameter model to obtain the current parameters, voltage parameters, and power parameters of output port 112 under the current operating conditions. The host computer 500, connected to the CPU 420, receives the current parameters of input port 111, the temperature parameters of the intrinsically safe power supply 100, and the current, voltage, and power parameters of output port 112 from the CPU 420. This allows it to summarize these power distribution parameters for later product performance analysis, batch equipment debugging, and explosion-proof system operation and maintenance management.

[0033] It should be noted that the monitoring method of one channel 110 in this embodiment of the invention is also applicable to the other channels 110 in the intrinsically safe power supply 100. Each channel 110 can independently complete the monitoring of the power distribution parameters of the output port 112 according to the above process.

[0034] This invention, through collecting the current parameters of the input port 111 located on the safety side and the temperature parameters of the intrinsically safe power supply 100, substitutes these parameters into a pre-stored power distribution parameter model to obtain the current parameters, voltage parameters, and power parameters of the output port 112. Therefore, this invention solves the problems of complex circuitry, large equipment size, long explosion-proof certification cycle, high difficulty in power distribution parameter monitoring, and high production costs associated with adding sampling circuits and configuring explosion-proof components on the hazardous side of the intrinsically safe power supply 100 when monitoring the power distribution parameters of the output port 112. It achieves the benefits of eliminating the need for data acquisition components on the hazardous side of the intrinsically safe power supply 100, simplifying the hardware architecture, reducing the difficulty of power distribution parameter monitoring, shortening the certification cycle, reducing the overall cost, and facilitating multi-channel, miniaturized, highly integrated, and mass-produced applications of the intrinsically safe power supply 100. Ultimately, it realizes real-time, accurate, and low-cost monitoring of power distribution parameters at multiple intrinsically safe power supply ports.

[0035] Figure 3 This is a schematic diagram illustrating an implementation of step S130 in a method for monitoring intrinsically safe power port distribution parameters provided in this invention. (See attached diagram.) Figure 3 Based on the above embodiments, optionally, the power distribution parameter model includes multiple power distribution parameter data tables and multiple power distribution parameter fitting functions. The multiple power distribution parameter data tables are generated by segmenting data according to preset temperature and current ranges; the power distribution parameter fitting functions include a current parameter fitting function for the output port, a voltage parameter fitting function for the output port, and a power parameter fitting function for the output port.

[0036] S130. Substituting the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the power distribution parameter model, the current parameters, voltage parameters, and power parameters of output port 112 are obtained, including: S131. Substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the corresponding power distribution parameter data table, and look up the current parameters, voltage parameters and power parameters of output port 112.

[0037] Specifically, the power distribution parameter data table is a table pre-stored in the memory 430. Due to the limited storage space of a single table in the memory 430, it is impossible to completely store all data corresponding to the full temperature parameter range and the full current parameter range. Therefore, multiple power distribution parameter data tables are generated by segmenting the preset temperature range and preset current range. Each power distribution parameter data table corresponds to a fixed set of current parameter segment intervals for input port 111 and temperature parameter segment intervals for intrinsically safe power supply 100. The table uses the current parameter of input port 111 and the temperature parameter of intrinsically safe power supply 100 as index fields, and pre-stores the current parameter, voltage parameter, and power parameter of output port 112 under the corresponding operating condition. After receiving the current parameter of input port 111 and the temperature parameter of intrinsically safe power supply 100, the CPU 420 retrieves the corresponding power distribution parameter data table from the memory 430 according to the numerical matching of the segment interval. After the CPU 420 filters out the power distribution parameter data table that matches the range of the current parameters of the input port 111 and the temperature parameters of the intrinsically safe power supply 100, the CPU 420 substitutes the current parameters of the input port 111 and the temperature parameters of the intrinsically safe power supply 100 into the power distribution parameter data table to obtain the current parameters, voltage parameters and power parameters of the output port 112 under the current operating conditions.

[0038] S132. Substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the current parameter fitting function to calculate the current parameters of output port 112; substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the voltage parameter fitting function to calculate the voltage parameters of output port 112; substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the power parameter fitting function to calculate the power parameters of output port 112.

[0039] Specifically, the current parameter fitting function, voltage parameter fitting function, and power parameter fitting function are three-dimensional surface functions constructed through Taylor series fitting, and are pre-stored in the memory 430. After receiving the current parameter of input port 111 and the temperature parameter of intrinsically safe power supply 100, CPU 420 retrieves the corresponding current parameter fitting function, voltage parameter fitting function, and power parameter fitting function from memory 430. Substituting the current parameter of input port 111 and the temperature parameter of intrinsically safe power supply 100 into the current parameter fitting function, the current parameter of output port 112 under the current operating condition can be obtained; substituting the current parameter of input port 111 and the temperature parameter of intrinsically safe power supply 100 into the voltage parameter fitting function, the voltage parameter of output port 112 under the current operating condition can be obtained; and substituting the current parameter of input port 111 and the temperature parameter of intrinsically safe power supply 100 into the power parameter fitting function, the power parameter of output port 112 under the current operating condition can be obtained.

[0040] This invention allows for flexible selection of two technical solutions for monitoring the power distribution parameters of output port 112: a lookup method using the power distribution parameter data table and a calculation method using the power distribution parameter fitting function, depending on the application scenario. The lookup method using the power distribution parameter data table has low computational complexity and fast response speed, making it suitable for industrial sites requiring real-time and rapid feedback of the power distribution parameters of output port 112. The calculation method using the power distribution parameter fitting function does not require a large number of segmented tables occupying storage space; relying on the Taylor series three-dimensional function, it can continuously calculate and output power distribution parameters under any operating condition, making it suitable for application scenarios with limited storage resources and requiring continuous high-precision calculations.

[0041] Figure 4 This is a flowchart illustrating the construction of a power distribution parameter model in a method for monitoring intrinsically safe power port power distribution parameters provided in an embodiment of the present invention. (See also...) Figure 4 Based on the above embodiments, optionally, before S120 and obtaining the power distribution parameter model corresponding to channel 110, the method further includes: constructing a power distribution parameter model.

[0042] The specific steps involved in constructing a power distribution parameter model are as follows: S11. Collect temperature parameters of multiple intrinsically safe power supplies 100, current parameters of multiple input ports 111, current parameters of multiple output ports 112, voltage parameters of multiple output ports 112, and power parameters of multiple output ports 112.

[0043] Specifically, this step is completed during the experimental phase before the intrinsically safe power supply 100 leaves the factory. By traversing the entire temperature parameter range and the entire current parameter range of input port 111 of the intrinsically safe power supply 100, multiple sets of temperature parameters and current parameters of input port 111 are collected. Simultaneously, the current parameters, voltage parameters, and power parameters of output port 112 under corresponding operating conditions are also collected, thereby accumulating sufficient experimental data. During the experimental phase, a high-precision sampling instrument can be connected externally to the hazardous side of the intrinsically safe power supply 100 to obtain the power distribution parameters of output port 112. Once the intrinsically safe power supply 100 is mass-produced and put into field use, it will be unnecessary to configure a sampling circuit on the hazardous side of the intrinsically safe power supply 100.

[0044] S12. Fit the temperature parameters of multiple intrinsically safe power supplies 100, the current parameters of multiple input ports 111, the current parameters of multiple output ports 112, the voltage parameters of multiple output ports 112, and the power parameters of multiple output ports 112 to obtain the current parameter surface, voltage parameter surface, power parameter surface, current parameter fitting function, voltage parameter fitting function, and power parameter fitting function of output ports 112.

[0045] Specifically, the current parameter surface, voltage parameter surface, and power parameter surface obtained through fitting are all three-dimensional characteristic surfaces, and the current parameter fitting function, voltage parameter fitting function, and power parameter fitting function are all three-dimensional functions. The corresponding current parameter surface and current parameter fitting function, voltage parameter surface and voltage parameter fitting function, and power parameter surface and power parameter fitting function are all obtained by fitting the same set of measured operating condition data. These surfaces and functions can completely and accurately characterize the inherent electrical characteristics of the intrinsically safe power supply 100, covering various influencing factors such as the transformer ratio of 113, winding internal resistance, link transmission loss, and temperature drift, accurately reflecting the power transmission variation law of the intrinsically safe power supply 100.

[0046] S13. Divide the current parameter surface, voltage parameter surface and power parameter surface into segments according to the preset temperature range and preset current range, and generate multiple power distribution parameter data tables corresponding to the segmented ranges of current parameters of different input ports 111 and the segmented ranges of temperature parameters of intrinsically safe power supply 100.

[0047] Specifically, due to the limited storage space of a single table in the memory 430, it is impossible to store complete current parameter surfaces, voltage parameter surfaces, and power parameter surfaces. Therefore, the three surfaces are segmented according to the predefined temperature range and the current range of the input port 111. Each intrinsically safe power supply 100's temperature range and the current range of its input port 111 correspond to a power distribution parameter data table. The power distribution parameter data table records the correspondence between the intrinsically safe power supply 100's temperature parameter, the input port 111's current parameter, the output port 112's current parameter, the output port 112's voltage parameter, and the output port 112's power parameter input current within that range. All power distribution parameter data tables are finally burned and stored in the memory 430.

[0048] This invention, through the collection of a large amount of experimental data, constructs current parameter surfaces, voltage parameter surfaces, power parameter surfaces, current parameter fitting functions, voltage parameter fitting functions, and power parameter fitting functions for the output port 112 by fitting the experimental data. These surfaces and functions can accurately reflect the actual operating characteristics of the intrinsically safe power supply 100. Based on this, this invention discretizes the constructed current parameter surfaces, voltage parameter surfaces, and power parameter surfaces into segments and maps them to generate multiple power distribution parameter data tables. All power distribution parameter data tables are pre-stored in the memory 430. When the intrinsically safe power supply 100 is running in the field, it can quickly obtain the current parameters, voltage parameters, and power parameters of the output port 112 on the dangerous side by simply collecting the temperature and current parameters of the input port 111 on the safe side and looking up the tables. Alternatively, in this embodiment of the invention, the temperature and current parameters of input port 111 can be substituted into the current parameter fitting function to calculate the current parameter of output port 112; the temperature and current parameters of input port 111 can be substituted into the voltage parameter fitting function to calculate the voltage parameter of output port 112; and the temperature and current parameters of input port 111 can be substituted into the power parameter fitting function to calculate the power parameter of output port 112. Figure 5 This is a flowchart of step S11 in a method for monitoring the distribution parameters of an intrinsically safe power supply port provided in an embodiment of the present invention. See [link / reference]. Figure 5 Based on the above embodiments, optionally, a load resistor is connected to the channel 110. The load resistor is arranged outside the intrinsically safe power supply 100 and connected to the output port 112.

[0049] S11. Acquiring multiple sets of temperature parameters of intrinsically safe power supply 100, multiple sets of current parameters of input port 111, multiple sets of current parameters of output port 112, multiple sets of voltage parameters of output port 112, and multiple sets of power parameters of output port 112 includes the following steps: S111. Collect multiple sets of temperature parameters of the intrinsically safe power supply 100 within the full operating temperature range of the intrinsically safe power supply 100.

[0050] Specifically, this step involves collecting multi-condition parameters within the entire operating temperature range of the intrinsically safe power supply 100. The collected temperature parameters of the intrinsically safe power supply 100 can accurately reflect the temperature changes of the intrinsically safe power supply 100, providing complete raw sample data for subsequent steps.

[0051] S112. Under the condition that the temperature parameters of each power supply 100 remain constant, adjust the resistance value of the load resistor; under different load resistor values, collect the current parameters of multiple input ports 111, the current parameters of multiple output ports 112, and the voltage parameters of multiple output ports 112.

[0052] Specifically, changing the load resistor value will cause the current parameters of input port 111, the current parameters of output port 112, and the voltage parameters of output port 112 to change synchronously. By traversing load resistors with different resistance values, data acquisition is completed for the entire load range, thus providing a complete set of measured data for subsequent steps.

[0053] S113. Based on the current parameters and voltage parameters of output port 112, calculate the power parameters of multiple sets of output port 112.

[0054] Specifically, the formula for calculating the power parameter Pout of output port 112 is: Pout = Uout × Iout. By measuring the current parameter Iout and voltage parameter Uout of output port 112 as measured by S112, the power parameter Pout of output port 112 for each operating condition can be calculated one by one.

[0055] This invention, through collecting the power distribution parameters of the intrinsically safe power supply 100 under all operating conditions and conducting multiple rounds of experimental iterations and calibrations (adjusting the temperature parameters and load resistance parameters of the intrinsically safe power supply 100), can stably control the calculation error of the power distribution parameters of the output port 112 within ±5%, meeting the engineering measurement accuracy requirements of the intrinsically safe power supply port power distribution parameters in industrial settings.

[0056] Figure 6 This is a flowchart of step S12 in a method for monitoring the distribution parameters of an intrinsically safe power supply port provided in an embodiment of the present invention. See [link / reference]. Figure 6Based on the above embodiments, optionally, S12, fitting the temperature parameters of multiple intrinsically safe power supplies 100, the current parameters of multiple input ports 111, the current parameters of multiple output ports 112, the voltage parameters of multiple output ports 112, and the power parameters of multiple output ports 112 to obtain the current parameter surface, the voltage parameter surface, the power parameter surface, the current parameter fitting function, the voltage parameter fitting function, and the power parameter fitting function of the output ports 112, includes the following steps: S121. Using the temperature parameter of the intrinsically safe power supply 100 and the current parameter of the input port 111 as the two independent variables, and the current parameter of the output port 112 as the dependent variable, fit the temperature parameter of the intrinsically safe power supply 100, the current parameter of the input port 111 and the current parameter of the output port 112 to obtain the surface of the current parameter of the output port 112 and the fitting function of the current parameter of the output port 112.

[0057] in, Figure 7 This is a schematic diagram of a current parameter surface provided in an embodiment of the present invention. See also... Figure 7 The x-axis represents the current parameter I1 of input port 111, the y-axis represents the temperature parameter T1 of intrinsically safe power supply 100, and the z-axis represents the current parameter Iout of output port 112. The current parameter surface visually represents the synchronous change of the current parameter of output port 112 with the current parameter of input port 111 and the temperature parameter of intrinsically safe power supply 100. The current parameter fitting function is the programmable mathematical analytical expression corresponding to the current parameter surface.

[0058] S122. Using the temperature parameter of the intrinsically safe power supply 100 and the current parameter of the input port 111 as the two independent variables, and the voltage parameter of the output port 112 as the dependent variable, fit the temperature parameter of the intrinsically safe power supply 100, the current parameter of the input port 111, and the voltage parameter of the output port 112 to obtain the voltage parameter surface of the output port 112 and the voltage parameter fitting function of the output port 112.

[0059] in, Figure 8 This is a schematic diagram of a voltage parameter surface provided in an embodiment of the present invention. See also... Figure 8 The x-axis represents the current parameter I1 of input port 111, the y-axis represents the temperature parameter T1 of intrinsically safe power supply 100, and the z-axis represents the voltage parameter Uout of output port 112. The voltage parameter surface visually represents the synchronous change of the voltage parameter of output port 112 with the current parameter of input port 111 and the temperature parameter of intrinsically safe power supply 100. The voltage parameter fitting function is the programmable mathematical analytical expression corresponding to the voltage parameter surface.

[0060] S123. Using the temperature parameter of the intrinsically safe power supply 100 and the current parameter of the input port 111 as the two independent variables, and the power parameter of the output port 112 as the dependent variable, fit the temperature parameter of the intrinsically safe power supply 100, the current parameter of the input port 111, and the power parameter of the output port 112 to obtain the power parameter surface of the output port 112 and the power parameter fitting function of the output port 112.

[0061] in, Figure 9 This is a schematic diagram of a power parameter surface provided in an embodiment of the present invention. See also... Figure 9 The x-axis represents the current parameter I1 of input port 111, the y-axis represents the temperature parameter T1 of intrinsically safe power supply 100, and the z-axis represents the power parameter Pout of output port 112. The power parameter surface visually represents the synchronous change of the power parameter of output port 112 with the current parameter of input port 111 and the temperature parameter of intrinsically safe power supply 100. The power parameter fitting function is the programmable mathematical analytical expression corresponding to the power parameter surface.

[0062] The current parameter surface, voltage parameter surface, power parameter surface, current parameter fitting function, voltage parameter fitting function and power parameter fitting function obtained in the embodiments of the present invention accurately reproduce the inherent electrical transmission and temperature drift characteristics of the intrinsically safe power supply 100. The current parameter surface, voltage parameter surface and power parameter surface are also the basis for generating multiple power distribution parameter data tables in the future.

[0063] It should be noted that, Figure 6 This is a flowchart corresponding to one embodiment of the present invention. In other embodiments, the execution order of S121, S122 and S123 may not be limited.

[0064] Figure 10 This is a flowchart of step S13 in a method for monitoring the distribution parameters of an intrinsically safe power supply port provided in an embodiment of the present invention. See [link / reference]. Figure 10 Based on the above embodiments, optionally, S13, dividing the current parameter surface, voltage parameter surface, and power parameter surface into segments according to preset temperature range and preset current range, and generating multiple power distribution parameter data corresponding to different input ports 111 and temperature parameter segments of the intrinsically safe power supply 100, includes the following steps: S1311 Extract the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, the current parameters of the output port 112, the voltage parameters of the output port 112, and the power parameters of the output port 112 from the multiple segmented surfaces composed of each preset temperature range and preset current range.

[0065] Specifically, the preset temperature range and preset current range can be flexibly set according to the storage space of a single table in the memory 430. This step cuts the complete current parameter surface, voltage parameter surface, and power parameter surface into multiple independent segmented surfaces. The temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, and the current parameters of the output port 112 are extracted from the multiple segmented surfaces cut from the current parameter surface; the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, and the voltage parameters of the output port 112 are extracted from the multiple segmented surfaces cut from the voltage parameter surface; and the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, and the power parameters of the output port 112 are extracted from the multiple segmented surfaces cut from the power parameter surface.

[0066] S1312 stores the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, the current parameters of the output port 112, the voltage parameters of the output port 112, and the power parameters of the output port 112 in each segmented surface, and generates multiple power distribution parameter data tables corresponding to different segmented intervals.

[0067] In this embodiment of the invention, all extracted data belonging to the temperature parameter range of the same intrinsically safe power supply 100 and the current parameter range of the input port 111 are summarized and organized to generate a power distribution parameter data table. Then, multiple power distribution parameter data tables generated by corresponding one-to-one with the temperature parameter ranges of all intrinsically safe power supplies 100 and the current parameter ranges of the input port 111 are burned and stored in the memory 430. The multiple power distribution parameter data tables in this embodiment of the invention cover the power distribution parameter mapping relationship under all temperature and load conditions of the intrinsically safe power supply 100, enabling rapid matching and comparison of power distribution parameters under real-time operating conditions, ensuring the accuracy and stability of the power distribution parameter calculation for the output port 112, and significantly improving the power distribution parameter calculation efficiency for the output port 112.

[0068] Based on the above embodiments, see below. Figure 1 Optionally, channel 110 may also include a current-limiting resistor 115 and a voltage-limiting element 116.

[0069] Among them, the current-limiting resistor 115 is a current-limiting component in the intrinsically safe power supply 100. It is used in conjunction with the voltage-limiting component 116 to form an intrinsically safe energy-limiting protection circuit, which limits the maximum current output from the output port 112 to the terminal device 300, so as to meet the explosion-proof intrinsic safety design requirements. The current-limiting resistor 115 is specifically set between the voltage-limiting component 116 and the output port 112.

[0070] Based on the above embodiments, see below. Figure 1Optionally, channel 110 further includes a current limiting switch 117, which is disposed between input port 111 and output port 112. After obtaining the current parameter of output port 112, the method further includes: comparing the current parameter of output port 112 with a current safety threshold; if the current parameter of output port 112 is greater than the current safety threshold, then controlling the current limiting switch 117 to open.

[0071] Specifically, the current limiting switch 117 is set between the input port 111 and the current sensor 114. The current safety threshold is an overcurrent protection judgment benchmark pre-stored in the CPU 420. After obtaining the current parameter of the output port 112, the CPU 420 compares the current parameter of the output port 112 with the current safety threshold. If the current parameter of the output port 112 is greater than the current safety threshold, the CPU 420 sends a shutdown control level through the digital output port (DO) 440. The DO440 outputs a drive signal to control the current limiting switch 117 to open, cutting off the power supply circuit of this channel 110, thereby realizing overcurrent protection for the intrinsically safe power supply 100 and meeting the intrinsically safe explosion-proof energy-limiting safety specifications.

[0072] Optionally, channel 110 also includes a fuse 118, which is switched between the current limiting switch 117 and the output port 112; the fuse 118 is used to blow when the current parameter of the output port 112 is greater than the current safety threshold and the current limiting switch 117 is not disconnected.

[0073] Specifically, fuse 118 is installed between current-limiting switch 117 and transformer 113, serving as a fusible protection device in case of failure of current-limiting switch 117, forming a two-stage overcurrent protection structure with current-limiting switch 117. When current-limiting switch 117 malfunctions and cannot reliably disconnect, excessive current will cause fuse 118 to melt due to heat, cutting off the power supply to channel 110 at the hardware level, preventing the emergence of an ignition source in an explosive environment, and further meeting the intrinsically safe and explosion-proof energy-limiting safety specifications.

[0074] Figure 11 This is a schematic diagram of the graphical user interface of a monitor provided in an embodiment of the present invention. See also: Figure 11 Based on the above embodiments, optionally, after obtaining the current parameters, voltage parameters and power parameters of the output port 112, the method further includes: uploading the current parameters and voltage parameters of the output port 112 to the monitor 450 to display the current parameters and voltage parameters of the output port 112.

[0075] in, Figure 11The real-time operating status and fault diagnosis information of 24 output ports 112 are illustrated. The graphical user interface (GUI) of the monitor 450 uses a color-block partitioning visualization method to display the real-time operating status and fault diagnosis information of the 24 output ports 112. Green blocks represent the corresponding output port 112 in the enabled state (Enable) and working normally (Diagnosis: OK, Details: No abnormality), the port operation status is marked as Up, and the current and voltage parameters of the output port 112 are displayed simultaneously; blue blocks represent the corresponding output port 112 in the enabled state (Enable) but there is a fault and the output port 112 needs maintenance (Diagnosis: Maintenance Required), and the fault type is displayed as Link Down or Overload / Short Circuit, the port operation status is Down, and the current and voltage parameters of the corresponding port are displayed simultaneously; gray blocks represent the corresponding output port 112 in the disabled state (Disable), and the power distribution parameters of the output port 112 are not collected.

[0076] In this embodiment of the invention, after the CPU 420 obtains the current, voltage, and power parameters of the output port 112, the parameters can be stored in the memory 430. The memory 430 is connected to the monitor 450, and the current and voltage parameters of the output port 112 are visualized in the GUI of the monitor 450 through an application program. The CPU 420 can also connect to the host computer 500 or the industrial operation and maintenance platform via a communication interface that conforms to intrinsically safe explosion-proof standards, and upload the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, the current parameters of the output port 112, the voltage parameters of the output port 112, and the power parameters of the output port 112 to the host computer 500 and the industrial operation and maintenance platform.

[0077] This invention eliminates the need for any sampling or isolation devices to be installed on the hazardous side of the intrinsically safe power supply 100. It enables the digital acquisition and real-time visualization monitoring of the power distribution parameters at the output port 112, accurately identifies power distribution anomalies in a single channel 110, and quickly locates faults such as line leakage, load fluctuations, and excessive transmission losses. This provides data support for the refined operation and maintenance, fault tracing and troubleshooting, dynamic load control, and safety hazard prediction of intrinsically safe power distribution systems. It effectively promotes the digital and intelligent upgrading of intrinsically safe power distribution equipment in explosion-proof industrial scenarios and ensures the long-term stable operation of explosion-proof instruments and power distribution equipment in industrial sites.

[0078] In summary, the intrinsically safe power port power distribution parameter monitoring method provided by the embodiments of the present invention has the following beneficial effects: 1. Overcoming intrinsically safe explosion-proof limitations to achieve precise digital monitoring of power distribution parameters at the output port 112 on the hazardous side: This invention eliminates the need for any additional measuring or sampling devices on the hazardous side, avoiding the technical problems associated with directly deploying sampling elements on the hazardous side in traditional technologies. By collecting the power distribution parameters from the input port 111 on the safe side and inputting them into the corresponding power distribution parameter model, the current, voltage, and power parameters of the output port 112 on the hazardous side can be indirectly and accurately obtained. This invention requires no modification to the original intrinsically safe explosion-proof structure of the equipment, eliminating the safety hazards of electrical signal transmission across the hazardous and safe sides. It fundamentally preserves the complete intrinsically safe explosion-proof rating of the intrinsically safe power supply 100, effectively solving the problem of the inability to digitally monitor power distribution parameters on the hazardous side in traditional methods.

[0079] 2. Abandoning the extensive management model and promoting the intelligent upgrade of intrinsically safe power distribution systems: Addressing the shortcomings of existing intrinsically safe power distribution management, such as extensive management, lagging status perception, and low operation and maintenance efficiency, this invention can capture the dynamic changes of various power distribution parameters at the hazardous side output port 112 in real time and continuously, achieving visualized, digitalized, and refined perception of the power distribution operation status. It can provide continuous and effective data support for the intelligent operation and maintenance, load management, and status assessment of intrinsically safe power distribution links in explosion-proof industries, changing the outdated model of relying on feedback from backend equipment to indirectly judge the power distribution status, effectively improving the overall management efficiency of intrinsically safe power distribution systems, and facilitating the digital and information-based upgrade and iteration of explosion-proof power distribution equipment.

[0080] 3. Strong model adaptability and reliable monitoring results: This embodiment of the invention is based on fitting massive measured data from the intrinsically safe power supply 100 under full temperature and full load conditions to construct a three-dimensional parametric surface and three-dimensional function. This fully covers the inherent electrical characteristics of the transformer, such as turns ratio, winding internal resistance, transmission loss, and temperature drift, accurately reproducing the power distribution and transmission patterns of the intrinsically safe power supply 100 under actual field conditions. This embodiment of the invention utilizes a lookup method using multiple power distribution parameter data tables or a calculation method using the power distribution parameter fitting function to calculate the power distribution parameters of output port 112, accurately reflecting the actual operating status of the power distribution parameters on the hazardous side. Furthermore, all components in this embodiment of the invention are industrial-grade components that meet intrinsically safe explosion-proof standards, ensuring stable and reliable operation of the intrinsically safe power supply 100, strong anti-interference capabilities, and adaptability to various complex explosion-proof industrial conditions, meeting the long-term safe operation requirements of harsh scenarios.

[0081] 4. Low structural modification cost and suitable for large-scale promotion and application: The embodiments of the present invention do not require modification or upgrade of the existing intrinsically safe power supply 100. Only a high-precision current sensor 114 needs to be configured on the safety side and the power distribution parameter data table needs to be embedded in the MCU 400 to complete the functional deployment. The overall modification difficulty is low, the hardware modification is small, and the production cost is controllable. There is no need to add large-volume isolation transmission devices. It is suitable for the miniaturization and high-density integration layout requirements of the intrinsically safe power supply 100 and has strong engineering implementation and large-scale promotion value.

[0082] This invention also provides a monitoring device for intrinsically safe power port distribution parameters, used to execute the monitoring method for intrinsically safe power port distribution parameters provided in any embodiment of this invention, and has corresponding beneficial effects. Figure 12 This is a schematic diagram of a monitoring device for intrinsically safe power port distribution parameters provided in an embodiment of the present invention. The monitoring method for intrinsically safe power port distribution parameters can be executed by this monitoring device, which can be implemented by software and / or hardware. This device can be configured in microcontroller units (MCUs) of various devices requiring intrinsically safe power supplies, such as explosion-proof switches and safety barriers. See also... Figure 1 The intrinsically safe power supply 100 includes multiple parallel channels 110. Each channel 110 includes an input port 111 and an output port 112. The input port 111 is used to connect to the power supply module, and the output port 112 is used to supply power to the terminal device. See also Figure 12 The device includes at least a data acquisition module 610, a model acquisition module 620, and a parameter calculation module 630.

[0083] The data acquisition module 610 is used to acquire the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100. The model acquisition module 620 is used to acquire the power distribution parameter model corresponding to channel 110. The power distribution parameter model includes the temperature parameters of intrinsically safe power supply 100, the current parameters of input port 111, the current parameters of output port 112, the voltage parameters of output port 112, and the power parameters of output port 112. The parameter calculation module 630 is used to substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the power distribution parameter model to obtain the current parameters, voltage parameters, and power parameters of output port 112.

[0084] Based on the above embodiments, optionally, the power distribution parameter model includes multiple power distribution parameter data tables and multiple power distribution parameter fitting functions; wherein, the multiple power distribution parameter data tables are generated by segmenting according to a preset temperature range and a preset current range; the power distribution parameter fitting functions include a current parameter fitting function for the output port 112, a voltage parameter fitting function for the output port 112, and a power parameter fitting function for the output port 112.

[0085] The parameter estimation module 630 specifically includes a data lookup unit and a data calculation unit.

[0086] The data lookup unit is used to substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the corresponding power distribution parameter data table, and look up the current parameters, voltage parameters and power parameters of output port 112.

[0087] The data calculation unit is used to substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the current parameter fitting function to calculate the current parameters of output port 112; to substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the voltage parameter fitting function to calculate the voltage parameters of output port 112; and to substitute the current parameters of input port 111 and the temperature parameters of intrinsically safe power supply 100 into the power parameter fitting function to calculate the power parameters of output port 112.

[0088] Based on the above embodiments, optionally, the monitoring device for the distribution parameters of the intrinsically safe power supply port further includes a model building module, which is used to build a distribution parameter model.

[0089] The power distribution parameter model specifically includes a data acquisition unit, a data fitting unit, and a table expansion unit.

[0090] The data acquisition unit is used to acquire temperature parameters of multiple intrinsically safe power supplies 100, current parameters of multiple input ports 111, current parameters of multiple output ports 112, voltage parameters of multiple output ports 112, and power parameters of multiple output ports 112.

[0091] The data fitting unit is used to fit multiple sets of intrinsically safe power supply 100 temperature parameters, multiple sets of input port 111 current parameters, multiple sets of output port 112 current parameters, multiple sets of output port 112 voltage parameters, and multiple sets of output port 112 power parameters to obtain the current parameter surface, voltage parameter surface, power parameter surface, current parameter fitting function, voltage parameter fitting function, and power parameter fitting function of output port 112.

[0092] The table extension unit is used to segment the current parameter surface, voltage parameter surface, and power parameter surface according to the preset temperature range and preset current range, and generate multiple power distribution parameter data tables corresponding to the segmented ranges of current parameters of different input ports 111 and the segmented ranges of temperature parameters of intrinsically safe power supply 100.

[0093] Based on the above embodiments, optionally, a load resistor is connected to the channel 110. The load resistor is arranged outside the intrinsically safe power supply 100 and connected to the output port 112.

[0094] The data acquisition unit is specifically used for: acquiring multiple sets of temperature parameters of the intrinsically safe power supply 100 within its entire operating temperature range; adjusting the resistance value of the load resistor under constant temperature parameters for each intrinsically safe power supply 100; acquiring multiple sets of current parameters of input port 111, multiple sets of current parameters of output port 112, and multiple sets of voltage parameters of output port 112 under different load resistor values; and calculating the power parameters of multiple sets of output port 112 based on the current parameters and voltage parameters of output port 112.

[0095] Based on the above embodiments, optionally, the data fitting unit is specifically used to: fit the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, and the current parameters of the output port 112 to the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, and the current parameters of the output port 112, using the temperature parameters of the intrinsically safe power supply 100 and the current parameters of the input port 111 as the two independent variables and the voltage parameters of the output port 112 as the dependent variable, to obtain a surface of the current parameters of the output port 112 and a fitting function of the current parameters of the output port 112; and fit the temperature parameters of the intrinsically safe power supply 100 and the current parameters of the input port 111 as the two independent variables and the voltage parameters of the output port 112 to the current parameters of the intrinsically safe power supply 100. The temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, and the voltage parameters of the output port 112 are fitted to obtain a surface curve and a fitting function for the voltage parameters of the output port 112. Using the temperature parameters of the intrinsically safe power supply 100 and the current parameters of the input port 111 as the two independent variables, and the power parameters of the output port 112 as the dependent variable, the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, and the power parameters of the output port 112 are fitted to obtain a surface curve and a fitting function for the power parameters of the output port 112.

[0096] Based on the above embodiments, optionally, the table expansion unit is specifically used to: extract the temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, the current parameters of the output port 112, the voltage parameters of the output port 112, and the power parameters of the output port 112 from the multiple segmented surfaces composed of each preset temperature range and preset current range; store the extracted temperature parameters of the intrinsically safe power supply 100, the current parameters of the input port 111, the current parameters of the output port 112, the voltage parameters of the output port 112, and the power parameters of the output port 112 from each segmented surface, and generate multiple power distribution parameter data tables corresponding to different segmented intervals.

[0097] See also Figure 1Based on the above embodiments, channel 110 may optionally include a current limiting switch 117, which is disposed between input port 111 and output port 112. The monitoring device for the intrinsically safe power supply port distribution parameters also includes a threshold comparison module, which compares the current parameter of output port 112 with a current safety threshold. If the current parameter of output port 112 is greater than the current safety threshold, the current limiting switch 117 is controlled to open.

[0098] Based on the above embodiments, optionally, the monitoring device for the intrinsically safe power port distribution parameters further includes a parameter display module, which is used to upload the current parameters and voltage parameters of the output port 112 to the monitor 450 to display the current parameters and voltage parameters of the output port 112.

[0099] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0100] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for monitoring the distribution parameters of an intrinsically safe power supply port, characterized in that, The intrinsically safe power supply includes multiple parallel channels, each channel having an input port and an output port. The input port is used to connect to the power supply module, and the output port is used to supply power to the terminal device. A monitoring method for one of the channels includes: Collect the current parameters of the input port and the temperature parameters of the intrinsically safe power supply; Obtain the power distribution parameter model corresponding to the channel; wherein, the power distribution parameter model includes the temperature parameter of the intrinsically safe power supply, the current parameter of the input port, the current parameter of the output port, the voltage parameter of the output port, and the power parameter of the output port; Substituting the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the power distribution parameter model, we obtain the current parameters of the output port, the voltage parameters of the output port, and the power parameters of the output port.

2. The method for monitoring the distribution parameters of an intrinsically safe power supply port according to claim 1, characterized in that, The power distribution parameter model includes multiple power distribution parameter data tables and multiple power distribution parameter fitting functions; wherein, the multiple power distribution parameter data tables are generated by segmenting according to a preset temperature range and a preset current range; the power distribution parameter fitting functions include a current parameter fitting function for the output port, a voltage parameter fitting function for the output port, and a power parameter fitting function for the output port; The step of substituting the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the power distribution parameter model to obtain the current parameters, voltage parameters, and power parameters of the output port includes: Substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the corresponding power distribution parameter data table, and look up the table to obtain the current parameters of the output port, the voltage parameters of the output port, and the power parameters of the output port; Alternatively, the current parameters of the input port and the temperature parameters of the intrinsically safe power supply can be substituted into the current parameter fitting function to calculate the current parameters of the output port; the current parameters of the input port and the temperature parameters of the intrinsically safe power supply can be substituted into the voltage parameter fitting function to calculate the voltage parameters of the output port; and the current parameters of the input port and the temperature parameters of the intrinsically safe power supply can be substituted into the power parameter fitting function to calculate the power parameters of the output port.

3. The method for monitoring the distribution parameters of an intrinsically safe power supply port according to claim 2, characterized in that, Before obtaining the power distribution parameter model corresponding to the channel, the method further includes: constructing the power distribution parameter model; The construction of the power distribution parameter model specifically includes: Collect multiple sets of temperature parameters of the intrinsically safe power supply, multiple sets of current parameters of the input port, multiple sets of current parameters of the output port, multiple sets of voltage parameters of the output port, and multiple sets of power parameters of the output port; The temperature parameters of multiple sets of intrinsically safe power supplies, the current parameters of multiple sets of input ports, the current parameters of multiple sets of output ports, the voltage parameters of multiple sets of output ports, and the power parameters of multiple sets of output ports are fitted to obtain the current parameter surface, the voltage parameter surface, the power parameter surface, the current parameter fitting function, the voltage parameter fitting function, and the power parameter fitting function of the output ports. The current parameter surface, the voltage parameter surface, and the power parameter surface are segmented according to a preset temperature range and a preset current range to generate multiple power distribution parameter data tables corresponding to different segmented ranges of the current parameters of the input ports and the segmented ranges of the temperature parameters of the intrinsically safe power supply.

4. The method for monitoring the distribution parameters of an intrinsically safe power supply port according to claim 3, characterized in that, The channel is externally connected to a load resistor, which is located outside the intrinsically safe power supply and connected to the output port. The acquisition of multiple sets of temperature parameters of the intrinsically safe power supply, multiple sets of current parameters of the input port, multiple sets of current parameters of the output port, multiple sets of voltage parameters of the output port, and multiple sets of power parameters of the output port includes: Multiple sets of temperature parameters of the intrinsically safe power supply are collected within the full operating temperature range of the intrinsically safe power supply. Under the condition that the temperature parameters of each intrinsically safe power supply remain constant, the resistance value of the load resistor is adjusted; under different resistance values ​​of the load resistor, multiple sets of current parameters of the input port, multiple sets of current parameters of the output port, and multiple sets of voltage parameters of the output port are collected. Based on the current parameters and voltage parameters of the output port, multiple sets of power parameters of the output port are calculated.

5. The method for monitoring the distribution parameters of an intrinsically safe power supply port according to claim 3, characterized in that, The process of fitting multiple sets of temperature parameters of the intrinsically safe power supply, multiple sets of current parameters of the input port, multiple sets of current parameters of the output port, multiple sets of voltage parameters of the output port, and multiple sets of power parameters of the output port to obtain a surface for the current parameters of the output port, a surface for the voltage parameters of the output port, a surface for the power parameters of the output port, a fitting function for the current parameters of the output port, a fitting function for the voltage parameters of the output port, and a fitting function for the power parameters of the output port includes: Using the temperature parameter and the current parameter of the input port of the intrinsically safe power supply as two independent variables and the current parameter of the output port as the dependent variable, the temperature parameter, the current parameter of the input port, and the current parameter of the output port of the intrinsically safe power supply are fitted to obtain the current parameter surface of the output port and the current parameter fitting function of the output port. Using the temperature parameter and the current parameter of the input port of the intrinsically safe power supply as two independent variables, and the voltage parameter of the output port as the dependent variable, the temperature parameter, the current parameter of the input port, and the voltage parameter of the output port of the intrinsically safe power supply are fitted to obtain the voltage parameter surface and the voltage parameter fitting function of the output port. Using the temperature parameter and the current parameter of the input port of the intrinsically safe power supply as two independent variables, and the power parameter of the output port as the dependent variable, the temperature parameter, the current parameter of the input port, and the power parameter of the output port are fitted to obtain the power parameter surface and the power parameter fitting function of the output port.

6. The method for monitoring the distribution parameters of an intrinsically safe power supply port according to claim 3, characterized in that, The step of segmenting the current parameter surface, the voltage parameter surface, and the power parameter surface according to a preset temperature range and a preset current range to generate multiple distribution parameter data tables corresponding to different input port current parameter segmentation ranges and intrinsically safe power supply temperature parameter segmentation ranges includes: The temperature parameters, current parameters of the input port, current parameters of the output port, voltage parameters of the output port, and power parameters of the output port of the intrinsically safe power supply are extracted from multiple piecewise surfaces composed of preset temperature ranges and preset current ranges, respectively. The temperature parameters, current parameters of the input port, current parameters of the output port, voltage parameters of the output port, and power parameters of the output port of the intrinsically safe power supply extracted from each segmented surface are stored to generate multiple power distribution parameter data tables corresponding to different segmented intervals.

7. The method for monitoring the distribution parameters of an intrinsically safe power supply port according to claim 1, characterized in that, The channel also includes a current limiting switch, which is disposed between the input port and the output port; After obtaining the current parameters of the output port, the process further includes: The current parameter of the output port is compared with the current safety threshold. If the current parameter of the output port is greater than the current safety threshold, the current limiting switch is controlled to open.

8. The method for monitoring the distribution parameters of an intrinsically safe power supply port according to claim 1, characterized in that, After obtaining the current parameter, voltage parameter, and power parameter of the output port, the method further includes: The current and voltage parameters of the output port are uploaded to the monitor for display.

9. A monitoring device for intrinsically safe power supply port distribution parameters, characterized in that, The intrinsically safe power supply includes multiple parallel channels, each channel having an input port and an output port. The input port is used to connect to the power supply module, and the output port is used to supply power to the terminal device. The device includes at least: The data acquisition module is used to acquire the current parameters of the input port and the temperature parameters of the intrinsically safe power supply. The model acquisition module is used to acquire the power distribution parameter model corresponding to the channel; wherein, the power distribution parameter model includes the temperature parameter of the intrinsically safe power supply, the current parameter of the input port, the current parameter of the output port, the voltage parameter of the output port, and the power parameter of the output port; The parameter calculation module is used to substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the power distribution parameter model to obtain the current parameters, voltage parameters, and power parameters of the output port.

10. The monitoring device for intrinsically safe power port distribution parameters according to claim 9, characterized in that, The power distribution parameter model includes multiple power distribution parameter data tables and multiple power distribution parameter fitting functions; wherein, the multiple power distribution parameter data tables are generated by segmenting according to a preset temperature range and a preset current range; the power distribution parameter fitting functions include a current parameter fitting function for the output port, a voltage parameter fitting function for the output port, and a power parameter fitting function for the output port; The parameter calculation module specifically includes: The data lookup unit is used to substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the corresponding power distribution parameter data table, and look up the current parameters, voltage parameters and power parameters of the output port. The data calculation unit is used to substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the current parameter fitting function to calculate the current parameters of the output port; substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the voltage parameter fitting function to calculate the voltage parameters of the output port; and substitute the current parameters of the input port and the temperature parameters of the intrinsically safe power supply into the power parameter fitting function to calculate the power parameters of the output port.

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