Electromagnetic heat multi-dimensional perception sensing system and structure

Abstract

The invention relates to an electromagnetic heat multi-dimensional sensing system and structure. The electromagnetic heat multi-dimensional sensing system comprises a dual-mode energy management module, a magnetic sensitive array sensing module and a multi-physical field processing module, the dual-mode energy management module is respectively connected with the magneto-sensitive array sensing module and the multi-physical field processing module, and the magneto-sensitive array sensing module is connected with the multi-physical field processing module; the dual-mode energy management module is used for converting a magnetic field signal or a current signal of the bus duct into electric energy and providing the electric energy for the magnetic sensitive array sensing module and the multi-physical field processing module; the magnetic sensitive array sensing module is used for sensing the magnetic field and the temperature of the bus duct and outputting a magnetic field signal and a temperature signal; the multi-physical field processing module is used for measuring according to the magnetic field signal and the temperature signal to obtain a measurement signal of the bus duct; according to the system and the structure, the measurement precision of the electromagnetic heat multi-dimensional sensing system on the key measurement signal of the bus duct is improved.

Description

Technical Field

[0001] This application relates to the fields of power Internet of Things and intelligent sensing technology, and in particular to an electromagnetic thermal multidimensional sensing system and structure. Background Technology

[0002] With the increasing demands for power transmission density and reliability in scenarios such as data centers and new energy power plants, high-density busbar trunking is becoming increasingly widely used in high-power-density power supply systems due to its significant advantages such as large current carrying capacity, compact structure, and flexible installation. Furthermore, the tightly arranged copper or aluminum busbars in high-density busbar trunking effectively reduce line losses and space occupation, making it a core solution to replace traditional cables. However, the complex electromagnetic environment and dynamic load characteristics of high-density busbar trunking pose significant challenges to current detection technology.

[0003] Currently, the detection of high-density busbar trunking mainly relies on traditional current transformers. However, traditional current transformers suffer from a "power extraction dead zone" under low-load conditions, leading to monitoring failure. Furthermore, they are susceptible to interference from nearby magnetic fields under dense wiring conditions, making it difficult to guarantee accuracy. Therefore, how to accurately detect high-density busbar trunking under low-load conditions has become an urgent problem to be solved. Summary of the Invention

[0004] Therefore, it is necessary to provide an electromagnetic thermal multidimensional sensing system and structure to address the aforementioned technical problems.

[0005] In a first aspect, this application provides an electromagnetic thermal multidimensional sensing system, comprising:

[0006] The system includes a dual-mode energy management module, a magnetic array sensing module, and a multi-physics processing module. The dual-mode energy management module is connected to both the magnetic array sensing module and the multi-physics processing module, and the magnetic array sensing module is connected to the multi-physics processing module.

[0007] The dual-mode energy management module is used to convert the magnetic field signal or current signal of the bus trunking into electrical energy and to provide power to the magnetic sensitive array sensing module and the multi-physics field processing module.

[0008] The magnetic array sensing module is used to sense the magnetic field and temperature of the busbar trunking and output magnetic field and temperature signals.

[0009] The multiphysics processing module is used to obtain the measurement signal of the busbar based on the magnetic field signal and temperature signal.

[0010] In one embodiment, the electromagnetic thermal multidimensional sensing system further includes a wireless communication module; the wireless communication module is connected to the multiphysics field processing module and the dual-mode energy management module respectively; the wireless communication module is also connected to an external processing device.

[0011] The dual-mode energy management module is also used to provide power to the wireless communication module;

[0012] The wireless communication module is used to transmit measurement signals to external processing devices via a wireless network.

[0013] In one embodiment, the dual-mode energy management module includes a magnetic energy acquisition unit, an electric field energy acquisition unit, and a control circuit; the control circuit is connected to both the magnetic energy acquisition unit and the electric field energy acquisition unit.

[0014] The electric field energy acquisition unit is used to acquire the current signal of the bus trunking;

[0015] The magnetic energy acquisition unit is used to acquire the magnetic field signal of the magnetic field where the busbar trunking is located;

[0016] The control circuit is used to control the electric field energy acquisition unit to convert the current signal into electrical energy when the current signal is less than the preset current signal, and to control the magnetic energy acquisition unit to convert the magnetic field signal into electrical energy when the current signal is not less than the preset current signal.

[0017] In one embodiment, the electric field energy acquisition unit includes: a coupling capacitor, a protection circuit, a rectifier circuit, impedance matching, and energy storage management.

[0018] In one embodiment, the magnetic array sensing module includes a sensing unit and a compensation unit; the sensing unit includes multiple magnetic field chips and a thermistor; the output terminal of the sensing unit is connected to the input terminal of the compensation unit.

[0019] The sensing unit is used to sense the initial magnetic field and initial temperature of the busbar, and obtain the initial magnetic field signal sensed by each magnetic field chip and the initial temperature signal sensed by the thermistor.

[0020] The compensation unit is used to perform averaging on multiple initial magnetic field signals to determine the magnetic field, and to compensate the initial temperature signal according to the differential method to determine the temperature.

[0021] Secondly, this application also provides an electromagnetic thermal multidimensional sensing structure, comprising:

[0022] Busbar conductor;

[0023] The contact layer is located on one side of the busbar conductor;

[0024] An electric field energy harvesting layer is located on the side of the contact layer away from the busbar conductor, and an electric field energy acquisition unit is installed in the electric field energy harvesting layer; the electric field energy acquisition unit is used to acquire the current signal of the busbar.

[0025] The sensing layer is located on the side of the electric field harvesting layer away from the busbar conductor. A magnetic array sensing module is installed in the sensing layer. The magnetic array sensing module is used to sense the magnetic field and temperature of the busbar and output magnetic field signals and temperature signals.

[0026] The magnetic energy harvesting layer is located on the side of the sensing layer away from the busbar conductor. The magnetic energy harvesting layer is equipped with a magnetic energy acquisition unit, which is used to acquire the magnetic field signal of the magnetic field where the busbar is located.

[0027] In one embodiment, the electromagnetic thermal multidimensional sensing structure further includes a protective layer; the protective layer is disposed on the side of the magnetic energy harvesting layer away from the busbar conductor.

[0028] In one embodiment, the electromagnetic thermal multidimensional sensing structure further includes a control circuit, which is connected to the electric field energy harvesting layer and the magnetic energy harvesting layer respectively.

[0029] The control circuit is used to control the electric field energy acquisition unit to convert the current signal into electrical energy when the current signal is less than the preset current signal, and to control the magnetic energy acquisition unit to convert the magnetic field signal into electrical energy when the current signal is not less than the preset current signal.

[0030] In one embodiment, the contact layer comprises highly thermally conductive insulating silicone or mica sheet.

[0031] In one embodiment, the electric field harvesting layer is made of flexible FPC copper foil; the electric field harvesting layer is used to collect the current signal of the bus trunking.

[0032] The aforementioned electromagnetic thermal multidimensional sensing system and structure comprises a dual-mode energy management module, a magnetic array sensing module, and a multiphysics field processing module. The dual-mode energy management module is connected to both the magnetic array sensing module and the multiphysics field processing module, which in turn is connected to the multiphysics field processing module. The dual-mode energy management module converts the magnetic field or current signal of the busbar trunking into electrical energy and provides power to both the magnetic array sensing module and the multiphysics field processing module. The magnetic array sensing module senses the magnetic field and temperature of the busbar trunking and outputs magnetic field and temperature signals. The multiphysics field processing module measures the busbar trunking's measurement signals based on the magnetic field and temperature signals. This system and structure directly extracts energy from the magnetic field or current of the busbar trunking through the dual-mode energy management module, eliminating the need for an external power supply or battery, thus reducing industrial costs. Furthermore, the magnetic array sensing module can synchronously acquire the magnetic field strength distribution and temperature signals of the busbar trunking, providing reliable data support for subsequent current calculations and overheat warnings, thereby improving the measurement accuracy of key measurement signals of the busbar trunking by the electromagnetic thermal multidimensional sensing system. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is an application environment diagram of an electromagnetic thermal multidimensional sensing system in one embodiment.

[0035] Figure 2 This is one of the structural block diagrams of an electromagnetic thermal multidimensional sensing system in one embodiment;

[0036] Figure 3 This is a second structural block diagram of an electromagnetic thermal multidimensional sensing system in one embodiment;

[0037] Figure 4 This is the third structural block diagram of an electromagnetic thermal multidimensional sensing system in one embodiment;

[0038] Figure 5 This is the fourth structural block diagram of an electromagnetic thermal multidimensional sensing system in one embodiment;

[0039] Figure 6 This is one of the structural diagrams of an electromagnetic thermal multidimensional sensing system in one embodiment;

[0040] Figure 7 This is the second structural diagram of an electromagnetic thermal multidimensional sensing system in one embodiment;

[0041] Figure 8 This is the third structural diagram of an electromagnetic thermal multidimensional sensing system in one embodiment. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0043] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0044] With the increasing demands for power transmission density and reliability in scenarios such as data centers and new energy power plants, high-density busbar trunking is becoming increasingly widely used in high-power-density power supply systems due to its significant advantages such as large current carrying capacity, compact structure, and flexible installation. Furthermore, the tightly arranged copper or aluminum busbars in high-density busbar trunking effectively reduce line losses and space occupation, making it a core solution to replace traditional cables. However, the complex electromagnetic environment and dynamic load characteristics of high-density busbar trunking pose significant challenges to current detection technology.

[0045] Currently, the detection of high-density busbar trunking mainly relies on traditional current transformers. However, traditional current transformers suffer from a "power extraction dead zone" under low-load conditions, leading to monitoring failure. Furthermore, they are susceptible to interference from nearby magnetic fields under dense wiring conditions, making it difficult to guarantee accuracy. Therefore, how to accurately detect high-density busbar trunking under low-load conditions has become an urgent problem to be solved.

[0046] In view of the above-mentioned technical problems, this application provides an electromagnetic thermal multidimensional sensing system and structure, and the following embodiments will specifically describe the electromagnetic thermal multidimensional sensing system and structure.

[0047] In one exemplary embodiment, such as Figure 1 As shown, an electromagnetic thermal multidimensional sensing system is provided. This system includes a dual-mode energy management module, a magnetic array sensing module, and a multiphysics field processing module. The dual-mode energy management module is connected to both the magnetic array sensing module and the multiphysics field processing module, and the magnetic array sensing module is also connected to the multiphysics field processing module. The dual-mode energy management module converts the magnetic field signal or current signal of the busbar trunking into electrical energy and provides electrical energy to the magnetic array sensing module and the multiphysics field processing module. The magnetic array sensing module senses the magnetic field and temperature of the busbar trunking and outputs magnetic field and temperature signals. The multiphysics field processing module measures the measurement signal of the busbar trunking based on the magnetic field and temperature signals.

[0048] The measurement signals include current, voltage, magnetic field, and temperature signals of the busbar trunking. A dual-mode energy management module can be embedded in the electric field energy harvesting layer 103, the magnetic energy harvesting layer 105, and the control circuit 107; a magnetic array sensing module can be embedded in the sensing layer 104; and a multi-physics processing module can be embedded in both the magnetic energy harvesting layer 105 and the sensing layer 104.

[0049] The working principle of the electromagnetic thermal multidimensional sensing system described in this application embodiment includes: when the busbar is in a energized operating state (i.e., voltage or current is detected), the electromagnetic thermal multidimensional sensing system is activated. The system then first activates the dual-mode energy management module, which can collect the magnetic field or current of the busbar, convert it, extract energy, and convert it into electrical energy to power the electromagnetic thermal multidimensional sensing system. After receiving power, the magnetic array sensing module begins to work. This module consists of a high-density distributed array of sensing chips. These chips can acquire in real time the details of the magnetic field intensity distribution and the temperature field change trend on the surface of the busbar and its surrounding space, thereby obtaining the initial magnetic field induction signal and the initial temperature signal. Due to environmental interference and inherent sensor characteristics, the magnetic array sensing module can compensate and calibrate the initial magnetic field and temperature signals to eliminate errors and improve data accuracy. It then outputs the compensated magnetic field and temperature signals to the multiphysics processing module. Upon receiving these compensated signals, the multiphysics processing module analyzes and processes them using signal processing and fusion analysis algorithms. This allows it to accurately calculate key measurement signals such as the real-time current value, temperature hotspot locations, and abnormal conditions of the busbar. Optionally, the multiphysics processing module can also locate abnormal temperature hotspots (such as overheating or current imbalance) in the busbar.

[0050] The electromagnetic thermal multidimensional sensing system described in the above embodiments extracts energy directly from the magnetic field or current of the busbar trunking through a dual-mode energy management module, eliminating the need for an external power supply or battery and reducing industrial costs. Furthermore, the magnetic array sensing module can synchronously acquire the magnetic field strength distribution and temperature signals of the busbar trunking, providing reliable data support for subsequent current calculations and overheat warnings, thereby improving the measurement accuracy of key measurement signals of the busbar trunking by the electromagnetic thermal multidimensional sensing system.

[0051] In one exemplary embodiment, such as Figure 2 As shown, Figure 1 The electromagnetic thermal multidimensional sensing system shown also includes a wireless communication module: the wireless communication module is connected to the multiphysics processing module and the dual-mode energy management module respectively; the wireless communication module is also connected to an external processing device; the dual-mode energy management module is also used to provide power to the wireless communication module; the wireless communication module is used to transmit the measurement signal to the external processing device through the wireless network.

[0052] The working principle of the electromagnetic thermal multidimensional sensing system described in this application embodiment includes: After the multiphysics field processing module in the electromagnetic thermal multidimensional sensing system obtains the compensated magnetic field signal and temperature signal output by the magnetic array sensing module, it performs algorithmic processing on the compensated magnetic field signal and temperature signal to obtain key measurement signals such as the real-time current value of the busbar, the location of temperature hotspots, and abnormal states. For example, the real-time current value of the busbar (for accurate current monitoring), the location of temperature hotspots (for identifying potential overheating risks), and abnormal state information (such as indication signals for faults such as overload, short circuit, or poor contact). Subsequently, after completing the extraction of key measurement signals, the multiphysics field processing module transmits the key measurement signals to the wireless communication module. After receiving the electrical energy provided by the dual-mode energy management module and the key measurement signals provided by the multiphysics field processing module, the wireless communication module starts working and sends the key measurement signals (current value, hotspot location, abnormal state, etc.) to external processing devices, such as programmable logic controllers (PLCs) and oscilloscopes.

[0053] In one exemplary embodiment, such as Figure 3 As shown, Figure 1 The dual-mode energy management module shown includes: a magnetic energy acquisition unit, an electric field energy acquisition unit, and a control circuit; the control circuit is connected to both the magnetic energy acquisition unit and the electric field energy acquisition unit; the electric field energy acquisition unit is used to acquire the current signal of the busbar; the magnetic energy acquisition unit is used to acquire the magnetic field signal of the magnetic field where the busbar is located; the control circuit is used to control the electric field energy acquisition unit to convert the current signal into electrical energy when the current signal is less than a preset current signal, and to control the magnetic energy acquisition unit to convert the magnetic field signal into electrical energy when the current signal is not less than a preset current signal.

[0054] The magnetic energy harvesting unit can be embedded in the magnetic energy harvesting layer 105, the electric field energy harvesting unit can be embedded in the electric field harvesting layer 103, and the control circuit can be embedded in the control circuit 107.

[0055] The working principle of the electromagnetic thermal multidimensional sensing system described in this application embodiment includes: when the electromagnetic thermal multidimensional sensing system detects that the busbar is energized (with voltage or current), and the dual-mode energy management module is activated to collect the magnetic field or current of the busbar, the control circuit monitors the current of the busbar collected by the electric field energy acquisition unit in real time. When the current of the busbar is continuously less than the preset current signal (e.g., the preset current signal is 5A), the control electric field energy acquisition unit uses the displacement current generated by the alternating electric field of the busbar to perform energy extraction, converting the current signal into electrical energy to power the overall system. When the current of the busbar is greater than the preset current signal, the control magnetic energy acquisition unit uses the magnetic field at the foot of the busbar to convert magnetic energy into electrical energy through the principle of electromagnetic induction, and quickly charges the energy storage capacitor. The electromagnetic thermal multidimensional sensing system prioritizes the use of magnetic energy for power supply and rapid charging. If the current of the busbar is less than the preset current signal, the control circuit needs to cut off the magnetic energy loop (to prevent reverse leakage) and seamlessly switch to the electric field energy loop to maintain the microcontroller's minimum power consumption sleep or heartbeat communication. Furthermore, in the dual-mode energy management module, when the control circuit controls the electric field energy acquisition unit to charge the energy storage capacitor, the subsequent microcontroller can be started when the voltage rises to the preset maximum voltage threshold; when the voltage drops to the preset minimum voltage threshold, the load is cut off and the intermittent working mode is entered to continue charging.

[0056] In one exemplary embodiment, such as Figure 4 As shown, Figure 1 The electric field energy acquisition unit shown includes: coupling capacitor, protection circuit, rectifier circuit, impedance matching, and energy storage management.

[0057] The working principle of the electromagnetic thermal multidimensional sensing system described in this application includes: First, the parasitic capacitance naturally formed between the induction plate and the energized busbar is used as an energy coupling channel, i.e., a coupling capacitor. Furthermore, if the sensor as a whole is floating on the busbar, the induction plate must face zero potential (such as the metal casing of the busbar / ground). At this time, the sensor ground (GND) potential is equal to the busbar potential, and the induction plate is raised to approximately the ground potential through capacitive coupling. The resulting high voltage difference of hundreds to thousands of volts (such as a 220V AC or 10kV high-voltage system) drives the plate to generate a displacement current. Because the electromagnetic thermal multidimensional sensing system may be affected by lightning surges or switching operation overvoltages, the sensing plates may momentarily withstand transient high voltages of several thousand volts. Therefore, the electric field energy acquisition unit connects a bidirectional transient voltage suppressor diode (TVS) or a multi-stage gas discharge tube in parallel at the input end to precisely clamp the overvoltage within the safe range of the subsequent circuit, i.e., a protection circuit. The subsequent circuit can use an ultra-low leakage current (such as a high-voltage Schottky diode) to build a full-wave rectifier bridge, effectively capturing microampere-level induced current and avoiding energy loss caused by leakage current of conventional diodes. Subsequently, the electromagnetic thermal multidimensional sensing system dynamically adjusts the switching frequency to achieve conjugate matching between the circuit input impedance and the capacitive reactance of the coupling capacitor, maximizing the extraction of weak electrical energy. Finally, the electrical energy acquired by the electric field energy acquisition unit is stored using tantalum capacitors / supercapacitors, and the output of electrical energy is controlled in conjunction with a hysteresis comparator.

[0058] In one exemplary embodiment, such as Figure 5 As shown, Figure 1 The magnetic array sensing module shown includes a sensing unit and a compensation unit. The sensing unit includes multiple magnetic field chips and a thermistor. The output terminal of the sensing unit is connected to the input terminal of the compensation unit. The sensing unit is used to sense the initial magnetic field and initial temperature of the busbar, and obtain the initial magnetic field signal sensed by each magnetic field chip and the initial temperature signal sensed by the thermistor. The compensation unit is used to perform averaging on multiple initial magnetic field signals to determine the magnetic field, and to compensate the initial temperature signal according to the differential method to determine the temperature.

[0059] The working principle of the electromagnetic thermal multidimensional sensing system described in this application embodiment includes: the magnetic array sensing module uses multiple magnetic field chips in the sensing unit to collect magnetic field information in the magnetic field distribution of the busbar to obtain an initial magnetic field signal; and uses a thermistor in the sensing unit to collect the ambient temperature of the busbar and its own chip temperature to obtain an initial temperature signal. The initial magnetic field signal and the initial temperature signal are input to the compensation unit, and the compensation unit uses an averaging algorithm to perform an averaging operation on multiple initial magnetic field signals to determine the magnetic field, that is, to perform an averaging operation on the magnetic field signals transmitted by multiple magnetic field chips. For example, there are 4 magnetic field chips in the sensing unit, and the transmitted magnetic field signals are B1, B2, B3, and B4, where B1 and B2 are the first group of magnetic field signals, and B3 and B4 are the second group of magnetic field signals. Then, the magnetic field S can be calculated according to the relationship (1), which is shown below:

[0060] (1);

[0061] The compensation unit uses a differential method to compensate for the initial temperature signal and determine the temperature. The differential method can be represented by equation (2), which is shown below:

[0062] (2);

[0063] in, This represents the differential function, indicating the current value measured under standard conditions (25℃) after eliminating external interference through differential methods. This is the temperature drift compensation coefficient, representing the sensitivity of the magnetic sensor chip (TMR) or core material to temperature. Indicates the current real-time temperature; The humidity correction factor represents the effect of ambient relative humidity on the sensor output. Within the microcontroller, a specific operational logic can be represented by equation (3), as shown below:

[0064] (3);

[0065] Where P is the proportionality coefficient, determined by Ampere's circuital law and geometric distance.

[0066] When the microcontroller detects a sharp increase in current (sudden increase in computing power) before the temperature has risen significantly, it uses the thermal inertia model to predict the temperature rise in advance and dynamically correct the measured value to solve the problem of transient thermal drift.

[0067] In one exemplary embodiment, based on the electromagnetic thermal multidimensional sensing system described in any of the foregoing embodiments, an electromagnetic thermal multidimensional sensing structure is also provided, such as... Figure 6 As shown, it includes: a busbar conductor 101; a contact layer 102 disposed on one side of the busbar conductor; an electric field energy harvesting layer 103 disposed on the side of the contact layer away from the busbar conductor, wherein an electric field energy harvesting unit is disposed in the electric field energy harvesting layer; the electric field energy harvesting unit is used to harvest the current signal of the busbar; a sensing layer 104 disposed on the side of the electric field energy harvesting layer away from the busbar conductor, wherein a magnetic sensitive array sensing module is disposed in the sensing layer; the magnetic sensitive array sensing module is used to sense the magnetic field and temperature of the busbar and output magnetic field signal and temperature signal; and a magnetic energy harvesting layer 105 disposed on the side of the sensing layer away from the busbar conductor, wherein a magnetic energy harvesting unit is disposed in the magnetic energy harvesting layer, wherein the magnetic energy harvesting unit is used to harvest the magnetic field signal of the magnetic field where the busbar is located.

[0068] In this embodiment, the electromagnetic thermal multidimensional sensing structure includes: a busbar conductor 101; a contact layer 102, disposed on one side of the busbar conductor for thermal conduction and electrical isolation, made of high thermal conductivity insulating silicone or mica sheet, tightly attached to the busbar conductor itself; an electric field harvesting layer 103, disposed on the side of the contact layer away from the busbar conductor, for collecting the current signal of the busbar, made of flexible FPC copper foil, with the flexible FPC copper foil serving as the sensing electrode, attached to the inner side of the sensor (close to the high-voltage busbar insulation layer), forming a parasitic capacitance with the busbar conductor, and an electric field energy harvesting unit disposed in the electric field harvesting layer for collecting the current signal of the busbar; and a sensing layer 104, disposed on the side of the electric field harvesting layer away from the busbar conductor. On the side, a magnetic array sensing module is set in the sensing layer, which can be used to sense the magnetic field and temperature of the bus trunking and output magnetic field and temperature signals. Its main material is a PCB board, on which four tunnel magnetoresistive sensor chips are uniformly distributed in a 2×2 rectangular array or ring, and an integrated high-precision negative temperature coefficient thermistor is mounted. The position is close to the center of the array of four tunnel magnetoresistive sensor chips to achieve chip-level temperature alignment. The magnetic energy harvesting layer 105 is set on the side of the sensing layer away from the bus trunking conductor. The magnetic energy harvesting layer is equipped with a magnetic energy acquisition unit, which is used to collect the magnetic field signal of the magnetic field where the bus trunking is located. Its main material is a small open magnetic ring, such as a high permeability permalloy magnetic core with a coil, which is installed around the bus conductor.

[0069] The aforementioned contact layer 102, electric field energy harvesting layer 103, sensing layer 104, and magnetic energy harvesting layer 105 can be integrated into a sheet-like structure that can be attached, pasted, or fixed to the busbar conductor itself in application. It is small in size, easy to operate, and convenient to install, so it has a wider range of applications.

[0070] In one exemplary embodiment, such as Figure 7 As shown, the electromagnetic thermal multidimensional sensing structure also includes: a protective layer 106; the protective layer 106 is disposed on the side of the magnetic energy harvesting layer away from the busbar conductor.

[0071] In this embodiment, the electromagnetic thermal multidimensional sensing structure includes a protective layer 106 in addition to the busbar conductor 101, contact layer 102, electric field energy harvesting layer 103, sensing layer 104, and magnetic energy harvesting layer 105. The protective layer 106 is used to prevent condensation from causing a short circuit in the system. The protective layer 106 is disposed on the side of the magnetic energy harvesting layer away from the busbar conductor, and its material is a sprayed superhydrophobic nano-coating.

[0072] In one exemplary embodiment, such as Figure 8 As shown, the electromagnetic thermal multidimensional sensing structure also includes: a control circuit 107, which is connected to the electric field energy harvesting layer 103 and the magnetic energy harvesting layer 105 respectively; the control circuit 107 is used to control the electric field energy harvesting unit to convert the current signal into electrical energy when the current signal is less than the preset current signal, and to control the magnetic energy harvesting unit to convert the magnetic field signal into electrical energy when the current signal is not less than the preset current signal.

[0073] In this embodiment, the electromagnetic thermal multidimensional sensing structure includes a busbar conductor 101, a contact layer 102, an electric field energy harvesting layer 103, a sensing layer 104, a magnetic energy harvesting layer 105, and a protective layer 106, as well as a control circuit 107. The control circuit 107 is composed of a low-power comparator and an electronic switch to achieve dual-mode adaptive switching.

[0074] When the control circuit detects that the current in the busbar conductor is less than a preset current signal, it selects the electric field energy acquisition unit to maintain the microcontroller in minimum power sleep mode or heartbeat communication. While the electric field energy acquisition unit is charging the energy storage capacitor, the subsequent microcontroller can be started when the voltage rises to a preset maximum voltage threshold; when the voltage drops to a preset minimum voltage threshold, the load is disconnected, and the system enters intermittent operation mode to continue charging. When the control circuit detects that the current in the busbar conductor is greater than a preset current signal, it disconnects the electric field energy acquisition unit and connects the magnetic energy acquisition unit to rapidly charge the energy storage capacitor, thus powering the entire electromagnetic thermal multi-dimensional sensing system.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An electromagnetic thermal multi-dimensional perception sensing system, characterized by, The system comprises a dual-mode energy management module, a magnetic sensitive array sensing module and a multi-physical field processing module; the dual-mode energy management module is connected with the magnetic sensitive array sensing module and the multi-physical field processing module respectively, and the magnetic sensitive array sensing module is connected with the multi-physical field processing module; The dual-mode energy management module is used for converting the magnetic field signal or the current signal of the bus duct into electric energy, and providing the electric energy for the magnetic sensitive array sensing module and the multi-physical field processing module; The magnetic sensitive array sensing module is used for sensing the magnetic field and the temperature of the bus duct, and outputting the magnetic field signal and the temperature signal; The multi-physical field processing module is used for measuring the measurement signal of the bus duct according to the magnetic field signal and the temperature signal.

2. The system of claim 1, wherein, The system further comprises a wireless communication module; the wireless communication module is connected with the multi-physical field processing module and the dual-mode energy management module respectively; and the wireless communication module is further connected with an external processing device; The dual-mode energy management module is further used for providing the electric energy for the wireless communication module; The wireless communication module is used for transmitting the measurement signal to the external processing device through a wireless network.

3. The system according to claim 1 or according to any one of claim 2, characterized in that, The dual-mode energy management module comprises a magnetic energy collection unit, an electric field energy collection unit and a control circuit; the control circuit is connected with the magnetic energy collection unit and the electric field energy collection unit respectively; The electric field energy collection unit is used for collecting the current signal of the bus duct; The magnetic energy collection unit is used for collecting the magnetic field signal of the magnetic field where the bus duct is located; The control circuit is used for controlling the electric field energy collection unit to convert the current signal into the electric energy when the current signal is less than a preset current signal, and is used for controlling the magnetic energy collection unit to convert the magnetic field signal into the electric energy when the current signal is not less than the preset current signal.

4. The system of claim 3, wherein, The electric field energy collection unit comprises a coupling capacitor, a protection circuit, a rectifier circuit, impedance matching and energy storage management.

5. The system according to claim 1 or according to any one of claim 2, characterized in that, The magnetic sensitive array sensing module comprises a sensing unit and a compensation unit; the sensing unit comprises a plurality of magnetic field chips and a thermistor; an output end of the sensing unit is connected with an input end of the compensation unit; The sensing unit is used for sensing the initial magnetic field and the initial temperature of the bus duct, and obtaining the initial magnetic field signal sensed by each magnetic field chip and the initial temperature signal sensed by the thermistor; The compensation unit is used for performing mean value operation on a plurality of the initial magnetic field signals to determine the magnetic field, and performing compensation on the initial temperature signal according to a differential method to determine the temperature.

6. An electromagnetic thermal multi-dimensional perception sensing structure, characterized in that, The electromagnetic heat multi-dimensional sensing structure comprises: A bus duct conductor; A contact layer arranged on one side of the bus duct conductor; An electric field energy collection unit arranged on the side of the contact layer away from the bus duct conductor; the electric field energy collection unit is used for collecting the current signal of the bus duct. A sensing layer is arranged on the side of the electric field energy extraction layer away from the bus duct conductor, and a magnetic sensitive array sensing module is arranged in the sensing layer; the magnetic sensitive array sensing module is used for sensing the magnetic field and temperature of the bus duct and outputting a magnetic field signal and a temperature signal; A magnetic energy extraction layer is arranged on the side of the sensing layer away from the bus duct conductor, and a magnetic energy collection unit is arranged in the magnetic energy extraction layer; the magnetic energy collection unit is used for collecting a magnetic field signal of the magnetic field in which the bus duct is located.

7. The structure of claim 6, wherein The structure further comprises a protective layer; the protective layer is arranged on the side of the magnetic energy extraction layer away from the bus duct conductor.

8. The structure according to claim 6 or according to any one of claim 7, characterized in that, The structure further comprises a control circuit; the control circuit is connected with the electric field energy extraction layer and the magnetic energy extraction layer respectively. The control circuit is used for converting the current signal into electric energy by the electric field energy collection unit when the current signal is smaller than a preset current signal, and is used for converting the magnetic field signal into the electric energy by the magnetic energy collection unit when the current signal is not smaller than the preset current signal.

9. The structure of claim 6, wherein The contact layer comprises high-thermal-conductivity insulating silica gel or mica sheet.

10. The structure of claim 6, wherein The material of the electric field energy extraction layer is flexible FPC copper foil; the electric field energy extraction layer is used for collecting a current signal of the bus duct.

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