Multi-direction electric field tumor area vector scanning method and system

Abstract

The invention provides a multidirectional electric field tumor area vector scanning method and system, and relates to the field of electric field control. The method comprises the following steps: acquiring a driving signal of an electric field generator, and outputting two control signals for controlling the polarity of an electric field and an electric field pulse signal with a positive electrode end and a negative electrode end; performing interlocking decoding on the two control signals to generate mutually exclusive forward driving signals and reverse driving signals, and connecting the positive end or the negative end of the electric field pulse signal to the two electric field patch terminals according to a preset connection rule or placing the positive end or the negative end of the electric field pulse signal in a high-resistance state to form a corresponding electrode connection state; and dynamically reconstructing a patch pairing relationship among the plurality of electric field patches according to a preset sequence, so that each patch and other patches form an electrode pair in sequence, and applying electric field pulse signals in sequence to output a multi-direction alternating electric field. The multi-directional electric field tumor area vector scanning device is used in the multi-directional electric field tumor area vector scanning process, and the technical problem that in the prior art, a multi-directional electric field cannot be flexibly output on the premise that safety and stability are guaranteed is solved.

Description

Technical Field

[0001] This application relates to the field of electric field control, and in particular to a method and system for multi-directional electric field vector scanning of tumor regions. Background Technology

[0002] Multi-electrode electric field systems generate controllable electric field distributions in space and are widely used in various fields. Existing technologies typically rely on multiphase signals to drive different electrodes separately to form electric fields in rotating or alternating directions. While this approach can achieve multi-directional electric fields to some extent, it still has significant limitations. First, multiphase signal driving increases hardware complexity, making system design and control more difficult. Furthermore, the tight coupling between electrode control logic and electrode layout limits system scalability and hinders the flexible combination of electrodes to generate electric fields in the desired directions, thus restricting the electric field coverage and direction adjustment capabilities. Moreover, during multi-electrode switching, multiphase signals may conduct simultaneously, easily leading to common short circuits and reducing system safety and reliability. Therefore, existing technologies cannot flexibly output multi-directional electric fields while ensuring safety and stability, necessitating an effective method to solve this technical problem. Summary of the Invention

[0003] This application provides a multi-directional electric field vector scanning method and system for tumor regions, which solves the technical problem that existing technologies cannot flexibly output multi-directional electric fields while ensuring safety and stability.

[0004] To achieve the above objectives, this application adopts the following technical solution: In a first aspect, a multi-directional electric field vector scanning method for tumor regions is provided, comprising: acquiring a driving signal of an electric field generator; based on the driving signal, outputting a first control signal and a second control signal for controlling the polarity of the electric field; based on the driving signal, generating an electric field pulse signal having positive and negative terminals; performing interlocking decoding on the first and second control signals to generate mutually exclusive positive and reverse driving signals; under the control of the positive and reverse driving signals, connecting the positive or negative terminals of the electric field pulse signal to two electric field patch terminals or placing them in a high-resistivity state according to a preset connection rule to form corresponding electrode connection states; based on the electrode connection states, dynamically reconstructing the patch pairing relationship among multiple electric field patches in a preset order, so that each patch sequentially forms an electrode pair with other patches, and sequentially applying electric field pulse signals to output multi-directional alternating electric fields.

[0005] In conjunction with the first aspect above, in one possible implementation, based on the driving signal, outputting a first control signal and a second control signal for controlling the polarity of the electric field includes: converting the driving signal into a digital control signal; generating the first control signal and the second control signal based on the digital control signal for controlling the forward or reverse connection of the electric field pulse signal.

[0006] In conjunction with the first aspect above, in one possible implementation, the first control signal and the second control signal are interlocked and decoded to generate mutually exclusive forward drive signals and reverse drive signals, including: decoding the first control signal and the second control signal through an interlocked logic circuit; generating mutually exclusive forward drive signals and reverse drive signals based on the decoding result, so that they are not simultaneously turned on at any time.

[0007] In conjunction with the first aspect above, in one possible implementation, under the control of a forward drive signal and a reverse drive signal, the positive or negative terminal of the electric field pulse signal is connected to two electric field patch terminals or placed in a high-resistance state according to a preset connection rule to form a corresponding electrode connection state. This includes: using the forward drive signal to control a first electronic switch, so that the positive terminal of the electric field pulse signal is connected to a selected electric field patch terminal; using the reverse drive signal to control a second electronic switch, so that the negative terminal of the electric field pulse signal is connected to a selected electric field patch terminal; and when both the forward drive signal and the reverse drive signal are invalid, placing the first electronic switch and the second electronic switch in a high-resistance state.

[0008] In conjunction with the first aspect above, in one possible implementation, based on the electrode connection state, the patch pairing relationship among multiple electric field patches is dynamically reconstructed in a preset order, so that each patch sequentially forms an electrode pair with other patches, and an electric field pulse signal is sequentially applied to output a multi-directional alternating electric field. This includes: S1, selecting the first patch and the second patch to form an electrode pair in a preset order, and connecting the positive or negative terminal of the electric field pulse signal to the terminal of the electrode pair through an electronic switch matrix; S2, after completing the application of the pulse signal to one electrode pair, switching to the next pair of patches in a preset order, and repeating the application of the electric field pulse signal; cyclically executing steps S1 and S2 until each patch sequentially forms an electrode pair with other patches to complete one round of pairing, outputting a multi-directional alternating electric field.

[0009] Secondly, a multi-directional electric field vector scanning system for tumor regions is provided, comprising: a microprocessor, an electric field generator, an electric field direction control unit, and an electric field patch unit; wherein, the microprocessor is used to generate a driving signal for the electric field generator and output a first control signal and a second control signal to control the polarity of the electric field; the electric field generator is used to generate an electric field pulse signal based on the driving signal of the electric field generator, the electric field pulse signal including a positive terminal and a negative terminal; the electric field direction control unit is used to execute the polarity switching and periodic alternation of the electric field based on the electric field pulse signal and according to the control relationship between the first control signal and the second control signal, and output the corresponding connection status; the electric field patch unit is used to dynamically reconstruct the patch pairing relationship among multiple patches according to a preset order based on the connection status of the electric field direction control unit, so that each patch sequentially forms an electrode pair with other patches, and thereby receives the electric field pulse signal to scan the tumor region.

[0010] In conjunction with the second aspect above, in one possible implementation, the electric field direction control unit includes: a bipolar control unit and an electronic switch unit; wherein, the bipolar control unit is used to interlock and decode the first control signal and the second control signal to generate mutually exclusive positive drive signal and reverse drive signal; the electronic switch unit is used to connect the positive or negative terminal of the electric field pulse signal to two electric field patch terminals according to a preset connection rule, or to place it in a high-resistance state, under the control of the positive drive signal and the reverse drive signal, to form a corresponding electrode connection state.

[0011] In conjunction with the second aspect above, in one possible implementation, the microprocessor is also used to: acquire temperature information of the electric field patch and adjust the output of the electric field pulse signal according to the temperature information; and monitor the conduction state of the electronic switch unit and detect abnormal conduction or high resistance state.

[0012] In conjunction with the second aspect above, in one possible implementation, the electric field patch unit includes multiple electric field patches; the multiple electric field patches surround the object to be scanned to form an electric field action zone in the torso region of the object to be scanned.

[0013] In conjunction with the second aspect above, in one possible implementation, the electric field patch unit is further configured to: T1, select a first patch and a second patch to form an electrode pair according to a preset order, and connect the positive or negative terminal of the electric field pulse signal to the electrode pair terminals through an electronic switch matrix; T2, after completing the application of the pulse signal to one electrode pair, switch to the next pair of patches according to a preset order and repeat the application of the electric field pulse signal; cyclically execute steps T1 and T2 until each patch sequentially forms an electrode pair with other patches to complete one round of pairing, and outputs a multi-directional alternating electric field.

[0014] This application provides a multi-directional electric field vector scanning method and system for tumor regions. By controlling the polarity of the driving signal, interlocking decoding, and dynamically reconstructing the electrodes, this method can achieve flexible pairing and multi-directional alternating output between multiple electric field patches while maintaining a single-phase pulse signal input. Specifically, the interlocking decoding mechanism ensures that the positive and negative driving signals are always mutually exclusive, fundamentally avoiding the risk of common short circuits caused by multiple electrodes being simultaneously turned on, thus improving the safety and reliability of the system during electrode switching. Simultaneously, the electronic switch controls the positive and negative extremes of the electric field pulse signal according to preset connection rules, allowing the electrode pairs to be flexibly reconstructed as needed, no longer limited by a fixed electrode layout, thereby achieving free adjustment of the electric field direction. Based on these characteristics, this method can output multi-directional alternating electric fields under simplified structural conditions, enhancing the system's directional coverage and control flexibility. It effectively improves the shortcomings of existing multi-electrode electric field systems that struggle to balance safety, stability, and directional adjustability, solving the technical problem that existing technologies cannot flexibly output multi-directional electric fields while ensuring safety and stability.

[0015] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0016] Figure 1 A system architecture diagram of a multi-directional electric field tumor region vector scanning system provided in this application embodiment; Figure 2 A flowchart illustrating a multi-directional electric field vector scanning method for tumor regions provided in this application embodiment; Figure 3 A schematic diagram of the layout of five electric field patches provided in the embodiments of this application; Figure 4 A schematic flowchart of another multi-directional electric field vector scanning method for tumor regions provided in this application embodiment; Figure 5A schematic flowchart of another multi-directional electric field vector scanning method for tumor regions provided in this application embodiment; Figure 6 This is a topology diagram of the bipolar switching control of the electric field patch provided in the embodiments of this application; Figure 7 This is a schematic flowchart of another multi-directional electric field vector scanning method for tumor regions provided in an embodiment of this application. Detailed Implementation

[0017] In the description of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. The "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0018] It should be noted that, in this application, the terms "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0019] The multi-directional electric field tumor region vector scanning method provided in this application embodiment can be applied to, for example... Figure 1 In the multi-directional electric field tumor region vector scanning system shown, such as Figure 1 As shown, the system includes: a microprocessor 101, an electric field generator 102, an electric field direction control unit 103, and an electric field patch unit 104.

[0020] The microprocessor 101 is used to generate a drive signal for the electric field generator and output a first control signal and a second control signal to control the polarity of the electric field; the electric field generator 102 is used to generate an electric field pulse signal based on the drive signal of the electric field generator, the electric field pulse signal including a positive terminal and a negative terminal; the electric field direction control unit 103 is used to execute the polarity switching and periodic alternation of the electric field based on the electric field pulse signal and according to the control relationship between the first control signal and the second control signal, and output the corresponding connection status; the electric field patch unit 104 is used to dynamically reconstruct the patch pairing relationship among multiple patches according to a preset order based on the connection status of the electric field direction control unit, so that each patch sequentially forms an electrode pair with other patches, and receives the electric field pulse signal to scan the tumor area accordingly.

[0021] As an example, in an embodiment of this application, the electric field generator generates an electric field pulse signal with a range of 100kHz-300kHz. The positive terminal of the output pulse signal is Max+, and the negative terminal is Max-. The electric field signal has a controllable polarity by adjusting the electric field direction control unit.

[0022] It should be noted that the electronic switch achieves dynamic control of the electric field direction by precisely switching the connection state of the electric field pulse signal at the output terminal, including connecting to the positive terminal (Max+), connecting to the negative terminal (Max-), or entering a high-impedance state (disconnected). This dynamic switching allows for precise control of the polarity of the electric field signal and provides a stable electric field environment for treatment.

[0023] In one possible implementation, the electric field direction control unit includes: a bipolar control unit and an electronic switch unit; wherein, the bipolar control unit is used to interlock and decode the first control signal and the second control signal to generate mutually exclusive positive drive signal and reverse drive signal; the electronic switch unit is used to connect the positive or negative terminal of the electric field pulse signal to two electric field patch terminals according to a preset connection rule, or to place it in a high-resistance state, under the control of the positive drive signal and the reverse drive signal, to form a corresponding electrode connection state.

[0024] As an example, in this embodiment, the bipolar control unit generates two mutually exclusive drive signals, which are used to drive the electronic switch to achieve polarity switching and periodic alternation of the electric field pulse signal. This module ensures the dynamic change and stability of the electric field direction. The electronic switch achieves dynamic control of the electric field direction by precisely switching the connection state of the electric field pulse signal at its output terminal, including connecting to the positive terminal (Max+), connecting to the negative terminal (Max-), or entering a high-impedance state (disconnected). This dynamic switching allows for precise control of the polarity of the electric field signal and provides a stable electric field environment for treatment.

[0025] It should be noted that the bipolar control unit generates two mutually exclusive drive signals, which are used to drive the electronic switch to achieve polarity switching and periodic alternation of the electric field pulse signal. This module ensures the dynamic change and stability of the electric field direction. The electronic switch responds to this mutually exclusive signal by selectively connecting its output to MAX+, MAX-, or placing it in a high-impedance state. This mechanism, while achieving dynamic polarity switching of the electric field pulse, ensures that under any input state, the signals driving the subsequent power switches will not be effective simultaneously, thus eliminating the risk of common short circuits at the hardware level and forming the core safety foundation of the system.

[0026] In one possible implementation, the microprocessor is also used to: acquire temperature sensor information from the electric field patch and adjust the output of the electric field pulse signal according to the temperature information; and monitor the conduction state of the electronic switch unit to detect abnormal conduction or high resistance states.

[0027] In one possible implementation, the electric field patch unit includes multiple electric field patches; the multiple electric field patches surround the object to be scanned to form an electric field action zone in the torso region of the object to be scanned.

[0028] In one possible implementation, the electric field patch unit is further configured to: T1, select a first patch and a second patch to form an electrode pair according to a preset sequence, and connect the positive or negative terminal of the electric field pulse signal to the electrode pair terminals through an electronic switch matrix; T2, after completing the application of the pulse signal to one electrode pair, switch to the next pair of patches according to a preset sequence and repeat the application of the electric field pulse signal; cyclically execute steps T1 and T2 until each patch sequentially forms an electrode pair with other patches to complete one round of pairing, and outputs an alternating electric field in multiple directions.

[0029] It should be noted that, through the electric field direction control unit, the electric field patch unit can precisely control the polarity of each pair of electric field patches. By alternating polarity switching within a predetermined period, the electric field patch unit periodically changes the polarity of each pair of electric field patches, forming a multi-directional vector alternating electric field. Temperature sensors are embedded in the distributed electrodes of the electric field patches for real-time data acquisition, feedback, and processing, ensuring the safety and stability of the system.

[0030] It should also be noted that the principle of electric field control and switching is that each electric field direction control unit controls the polarity of each pair of adjacent electric field patches through a single-path bipolar electric field switching topology. Within each cycle, the system precisely connects the electric field patches to the treatment pulse Max+ or Max- by switching electronic switches, thereby controlling the formation of the electric field.

[0031] As an example, in this embodiment of the application, the temperature threshold is set to 40°C. When the collected patch temperature exceeds 40°C, the microprocessor reduces the amplitude of the electric field pulse signal by 10%. If the temperature continues to exceed 45°C, the pulse signal is stopped from being output. The abnormal conduction judgment criterion is that the switch conduction time exceeds 1.5 times the preset period.

[0032] To address the technical problem that existing technologies cannot flexibly output multi-directional electric fields while ensuring safety and stability, this application provides a multi-directional electric field vector scanning method for tumor regions. The method includes: acquiring a driving signal from an electric field generator; based on the driving signal, outputting a first control signal and a second control signal for controlling the polarity of the electric field; based on the driving signal, generating an electric field pulse signal with positive and negative terminals; performing interlocking decoding on the first and second control signals to generate mutually exclusive positive and reverse driving signals; under the control of the positive and reverse driving signals, connecting the positive or negative terminals of the electric field pulse signal to two electric field patch terminals according to a preset connection rule or placing them in a high-resistance state to form corresponding electrode connection states; based on the electrode connection states, dynamically reconstructing the patch pairing relationship among multiple electric field patches in a preset order, so that each patch sequentially forms an electrode pair with other patches, and sequentially applying electric field pulse signals to output multi-directional alternating electric fields.

[0033] Figure 2 A schematic flowchart of the multi-directional electric field tumor region vector scanning method provided in this application embodiment is shown below. Figure 2 As shown, the method includes: S201. Obtain the drive signal of the electric field generator.

[0034] Among them, the driving signal refers to the timing excitation signal generated by the microprocessor and sent to the electric field generator. This signal contains amplitude, frequency and timing information, which is used to control the output behavior of the electric field generator.

[0035] In one possible implementation, the microprocessor generates drive pulses at a predetermined frequency and duty cycle through a digital output port, and transmits them to the input of the electric field generator via an isolation or buffer circuit, thereby generating a stable high-frequency pulse output.

[0036] It should be noted that the amplitude and frequency of the driving signal can be parameterized by the microprocessor software, and should be protected at the hardware level by anti-interference circuits and filtering measures to ensure that the signal is not distorted or falsely triggered in the transmission link.

[0037] Based on the above steps, this step acquires and transmits the drive signal, thereby providing a stable and adjustable signal source for subsequent control signal generation and electric field pulse output, ensuring the overall timing consistency and controllability of the system.

[0038] S202. Based on the driving signal, output a first control signal and a second control signal for controlling the polarity of the electric field.

[0039] The first control signal and the second control signal are digital or logic signals used to indicate polarity selection and switching status. Together, they form a polarity control pair to drive interlock logic or switch drive circuits.

[0040] In one possible implementation, the microprocessor reads the phase or timing information of the drive signal, generates two digital control bits through an internal control algorithm, and outputs them as a first control signal and a second control signal after being amplified by a cascaded driver, so as to serve as the input of the back-end interlocking logic.

[0041] Based on the above steps, this step maps the drive signal into two complementary control signals, providing clear and programmable inputs for interlock decoding and safety switch control, ensuring that subsequent polarity switching is executed according to the set rules.

[0042] S203. Based on the driving signal, generate an electric field pulse signal with positive and negative terminals.

[0043] Among them, the electric field pulse signal refers to the high-frequency pulse output by the electric field generator. This pulse contains two output ports that can be selected by the switching matrix as the positive terminal (MAX+) or the negative terminal (MAX-).

[0044] In one possible implementation, after receiving the drive signal, the electric field generator generates pulses with the required amplitude and waveform through a power amplification and isolation conversion circuit, and provides the pulses to the output interfaces identified as MAX+ and MAX- respectively.

[0045] It should be noted that the electric field pulse signal should meet the requirements of matching the electronic switch in terms of spectrum and amplitude design, and the output should be equipped with overvoltage, overcurrent and transient suppression devices to prevent damage to the switching elements.

[0046] Based on the above steps, this step generates and provides a structured two-terminal pulse signal, laying the physical signal foundation for the electronic switch unit to select the positive and negative poles as the electrode driving source under different connection states.

[0047] S204. Interlock decoding is performed on the first control signal and the second control signal to generate mutually exclusive forward drive signal and reverse drive signal.

[0048] Interlock decoding refers to processing the input first and second control signals through hardware or firmware logic to output a pair of mutually exclusive drive control signals, so as to ensure that a drive state that is effective at the same time will not occur simultaneously.

[0049] In one possible implementation, the interlock decoding is implemented by a dedicated logic gate circuit or a safety state machine within the MCU. The logic judges the input signal and generates a mutually exclusive output at the hardware level, while forcing a high-impedance or inhibited state when an abnormal input combination is detected. The first control signal and the second control signal are interlocked and decoded to generate mutually exclusive positive drive signals and reverse drive signals.

[0050] It should be noted that the interlocking decoder should implement a hardware-first safety strategy, that is, when the MCU software is abnormal or the signal is incorrect, the interlocking logic can be forced into a safe state independently of the software to avoid simultaneous conduction.

[0051] Based on the above steps, this step ensures mutual exclusion of forward and reverse drive signals through hardware or hardware-driven logic, thereby reducing the risk of common short circuits and improving operational safety from the system architecture level.

[0052] S205. Under the control of the forward drive signal and the reverse drive signal, the positive or negative terminal of the electric field pulse signal is connected to the two electric field patch terminals or placed in a high resistance state according to the preset connection rules to form the corresponding electrode connection state.

[0053] Among them, the preset connection rule refers to the electrode selection and connection sequence determined by the system according to the configuration table or control program. This rule defines which surface mount terminals MAX+ or MAX- should be connected to or kept in a high-resistance open circuit under different control states.

[0054] In one possible implementation, the electronic switching unit consists of a matrix of multiple semiconductor switches. After receiving a positive drive signal and a reverse drive signal, the matrix drives the corresponding switches to turn on or off according to a preset connection rule, thereby achieving selective connection of MAX+ and MAX- to specific surface mount terminals.

[0055] It should be noted that electronic switches should follow dead time and soft switching strategies when switching, and a high-impedance path should be reserved in the design to quickly disconnect all outputs when an anomaly is detected or a safety shutdown is performed.

[0056] Based on the above steps, this step achieves controllable distribution of the positive and negative terminals of the electric field pulse signal to the patch, ensuring that the electrode connection state is strictly established according to the preset rules and can quickly enter the high-resistance state under abnormal conditions, thus taking into account both functionality and safety.

[0057] S206. Based on the electrode connection state, the patch pairing relationship is dynamically reconstructed among multiple electric field patches in a preset order, so that each patch forms an electrode pair with other patches in sequence, and electric field pulse signals are applied in sequence to output multi-directional alternating electric fields.

[0058] The dynamic reconstruction of patch pairing relationships refers to the system establishing different electrode pair connections in a cyclical manner using an electronic switch matrix, according to a predetermined pairing sequence and timing, without changing the physical position of the patches. The preset sequence refers to the order of the electric field patches' numbers or electric field coverage priority, ensuring that each patch forms an electrode pair with other patches sequentially. The electronic switch matrix is ​​a fully cross-matrix matrix, with each electric field patch corresponding to two independent switches, connected to MAX+ and MAX- respectively. The number of switches is 2×N, where N is the number of electric field patches. Patch pairing is achieved by controlling the on / off state of the switches via an MCU.

[0059] In one possible implementation, the microprocessor or control unit issues control commands item by item according to a pre-loaded pairing list. S1, the electronic switch unit selects the first patch and the second patch to form an electrode pair in a preset order, and connects the positive or negative terminal of the electric field pulse signal to the terminal of the electrode pair through the electronic switch matrix; S2, after the pulse signal of one electrode pair is applied, the system switches to the next pair of patches in a preset order and repeats the application of the electric field pulse signal; steps S1 and S2 are executed cyclically until each patch forms an electrode pair with other patches in turn to complete one round of pairing, and outputs an alternating electric field in multiple directions.

[0060] It should be noted that the reconfiguration of pairing timing should take into account the duration of each pairing, the switching dead zone, and the overall time-domain consistency of the system. Furthermore, the interlocking logic should remain effective during the switching process to avoid transient short circuits.

[0061] As an example, the system can establish electrode pairs in a cyclical sequence of A→B, A→C, A→D, B→C, B→D, B→A, C→D, C→A, C→B, D→A, D→B, D→C. After applying N pulse cycles to each pair, it switches to the next pair until the predetermined multi-directional coverage cycle is completed. Here, A, B, C, and D represent four electric field patches.

[0062] Based on the above steps, this step achieves alternating changes in electric field direction through orderly pairing reconstruction and pulse application, thereby generating multi-directional electric field distribution in a controlled manner under single-phase signal input conditions, improving the system's directional coverage and configuration flexibility, while maintaining the safety and timing controllability of the switching process.

[0063] In another possible implementation, multiple electric field patches are surrounded around the object to be scanned to form an electric field zone in the torso region of the object.

[0064] As an example, Figure 3 The five-patch layout diagram provided in the embodiments of this application is as follows: Figure 3As shown, A, B, C, D, and E are five electric field patches. The path switching is performed in the following order: A→B, A→C, A→D, A→E, B→C, B→D, B→E, B→A, C→D, C→E, C→A, C→B, D→E, D→A, D→B, D→C, E→A, E→B, E→C, E→D.

[0065] It should be noted that the electric field system in this application differs from traditional fixed electric field patch configurations. It involves at least three or more electric field patches, which are flexibly paired through alternating switching and dynamic adjustment of electric field polarity to form a multi-directional electric field. Compared to traditional ring or cross-shaped switching methods, multi-directional electric field vector scanning technology can comprehensively cover the scanning area from multiple angles, ensuring uniform electric field distribution and eliminating scanning blind spots. Simultaneously, the scanning depth is optimized through the coordinated action of forward and reverse electric fields.

[0066] This application employs a bipolar switching control topology for electric field patches. This topology generates two mutually exclusive drive signals by receiving MCU instructions, which are used to control two switching devices in the electronic switching unit. The mutual exclusion logic ensures that the two switches will not conduct simultaneously at any given time, thus avoiding the risk of common short circuits due to control failure or logic overlap, and improving the safety and reliability of system operation at the hardware level. Based on the above hardware structure and mutual exclusion mechanism, the on-demand dynamic switching of the positive and negative polarities of the electric field patch pulse signals is achieved, enabling the system to flexibly configure patch combinations while maintaining safe isolation and providing scalable quantity support. Leveraging the controllable polarity of the pulse signals, the system overcomes the limitations of directional and channel-limited solutions in traditional approaches, effectively solving the technical problem of existing technologies struggling to achieve flexible multi-directional electric field output while maintaining stability and safety.

[0067] In one possible implementation of the embodiments of this application, combined with Figure 2 ,like Figure 4 As shown, the above S202 can be implemented through the following S401 and S402, which are explained in detail below: S401 converts the drive signal into a digital control signal.

[0068] In one possible implementation, the microprocessor performs amplitude judgment, edge recognition, or period analysis on the driving signal, converting the analysis result into a corresponding digital state. This allows subsequent logic modules to perform polarity selection, switching actions, or sequence scheduling based on the digital state. This achieves standardized processing of the signal content while maintaining the original driving rhythm.

[0069] It should be noted that the digital conversion of drive signals typically does not involve changing the physical form of the signal, but rather extracting its control logic in a structured manner to meet the consistency input requirements of subsequent digital modules. This conversion process focuses on the effectiveness and stability of the signal logic layer, rather than performing complex calculations or reconstructions on the signal itself.

[0070] Based on the above steps, this step ensures that the entire control link processes input signals digitally, enabling the system's polarity switching logic to achieve higher stability, anti-interference capability, and consistency. It avoids misjudgment caused by signal edge ambiguity or analog noise, providing a reliable input basis for subsequent polarity control.

[0071] S402. Generate a first control signal and a second control signal based on the digital control signal, which are used to control the forward or reverse connection of the electric field pulse signal.

[0072] The first control signal and the second control signal represent two polarity control states, which can be regarded as mutually exclusive outputs used to indicate how the electric field pulse signal is connected to the subsequent surface mount terminals, so that the system can select only one polarity direction at any time.

[0073] In one possible implementation, the system generates paired control commands based on the high / low states or logical combinations of digital control signals. The first control signal triggers the forward connection path, and the second control signal triggers the reverse connection path. During this process, the system automatically ensures the timing interlock between the two signals, preventing them from being active simultaneously.

[0074] It should be noted that the outputs of the two control signals are not simple signal copies, but rather mutually exclusive decisions based strictly on logical condition judgments. This design ensures that the polarity connection has a clear directionality in its structure and avoids abnormal switching states caused by control conflicts.

[0075] Based on the above steps, this step enables the system to obtain clear forward and reverse connection control paths, making the polarity switching process more logically deterministic, ensuring that the electric field pulse can be established in the expected direction during the output stage, thereby improving the reliability of the electrode connection, and further laying a controllable foundation for realizing the serialized output of multi-directional electric fields.

[0076] This embodiment of the application converts the drive signal into a structured digital control signal, and generates mutually exclusive first and second control signals based on this. This establishes a unified, stable, and predictable signal input and output relationship in the polarity control link. Digital processing improves the anti-interference capability of the control commands, ensuring that subsequent polarity determination is unaffected by analog noise, signal fluctuations, or edge ambiguity. The mutual exclusion generation mechanism of the two control signals ensures that the forward and reverse connection paths are logically completely separated, avoiding the risk of simultaneous conduction or false triggering, thereby reducing abnormal states caused by control conflicts during polarity switching. Overall, these two steps together construct a reliable and directionally clear polarity control foundation, providing a stable control source for the safe switching of subsequent electric field pulses, clear polarity output, and the sequential construction of multi-directional electric fields.

[0077] In one possible implementation of the embodiments of this application, combined with Figure 2 ,like Figure 5 As shown, the above S204 can be implemented through the following S501 and S502, which are explained in detail below: S501, the first control signal and the second control signal are decoded by the interlock logic circuit.

[0078] In one possible implementation, the interlocking logic circuit can be constructed from a logic gate array or a programmable logic device. This circuit receives a first control signal and a second control signal, parses their logical combination, identifies the polarity requirement corresponding to the current control instruction, and outputs the decoded result for generating subsequent drive signals. This decoding process can be implemented using combinational logic or executed through a simplified state machine, ensuring that the corresponding logical state is output under any input condition.

[0079] Based on the above steps, this step provides a single, well-defined logical basis for the generation of subsequent forward and reverse drive signals through the stable analysis of the control signal, thereby reducing the risk of ambiguous inputs and conflicts in the polarity control link and making the electric field polarity switching process safer and more controllable.

[0080] S502. Generate mutually exclusive positive and negative drive signals based on the decoding results, so that they are not turned on at the same time at any time.

[0081] In one possible implementation, the system drives a set of complementary output circuits based on the decoding result, ensuring that the forward and reverse drive signals are output according to the "one-way valid" principle. That is, when the decoding identifier requires a positive polarity, the circuit automatically generates a high-level forward drive signal and keeps the reverse drive signal in an invalid state; otherwise, it only outputs the reverse drive signal. This complementary control can be implemented using inverting logic, hardware mutex latches, or bistable structures, ensuring that a situation where both paths are valid never occurs.

[0082] It should be noted that, in order to further enhance safety, the system can introduce protection logic before the output drive signal, such as through a short dead time or a synchronous update mechanism, to avoid transitional conflicts at the moment of polarity switching, thereby ensuring the safe operation of the electronic switching unit.

[0083] Based on the above steps, this step avoids common short circuits or polarity conflicts caused by the simultaneous conduction of two drive signals by strictly controlling the mutual exclusion of the drive signals during electrode polarity switching. This significantly improves the safety, reliability, and determinism of polarity output during switching, laying a stable driving foundation for the subsequent construction of multi-directional electric fields.

[0084] As an example, in an embodiment of this application, Figure 6 This is a topology diagram of the bipolar switching control of the electric field patch provided in the embodiments of this application, such as... Figure 6 As shown, based on steps S401, S402, S501, and S502, the bipolar control unit, as the control core of the system, receives two independent digital control signals L_P and L_N from the microprocessor. This module integrates interlocking logic circuitry to decode L_P and L_N and generate two mutually exclusive drive signals DRV_P and DRV_N. The electronic switch, as the core execution unit of the single-channel bipolar electric field switching topology, provides the foundation for dynamic switching of the electric field direction by precisely switching its output to one of three states: connected to the positive pole (MAX+), connected to the negative pole (MAX-), or high-blocking open. For example, when (DRV_P,DRV_N)=(1,0), electronic switch Qp is turned on and connected to the positive terminal MAX+ of the electric field pulse signal; when (DRV_P,DRV_N)=(0,1), electronic switch Qn is turned on and connected to the positive terminal MAX- of the electric field pulse signal; when (DRV_P,DRV_N)=(0,0), electronic switch Qn is turned off and electronic switch Qp is turned off; when (DRV_P,DRV_N)=(1,1), electronic switch Qn is turned off and electronic switch Qp is turned off.

[0085] This embodiment receives a control signal from the MCU and generates two mutually exclusive drive signals. The electronic switch responds to these mutually exclusive signals by selectively connecting its output to MAX+, MAX-, or placing it in a high-impedance state. This mechanism achieves dynamic switching of the electric field pulse polarity while ensuring that the signals driving subsequent power switches are not simultaneously effective under any input state. This eliminates the risk of common short circuits at the hardware level and constitutes the core safety foundation of the system.

[0086] In one possible implementation of the embodiments of this application, combined with Figure 2 ,like Figure 7As shown, the above S205 can be specifically implemented through the following S701 to S703, which are explained in detail below: S701. Use the positive drive signal to control the first electronic switch so that the positive terminal of the electric field pulse signal is connected to the selected electric field patch terminal.

[0087] In one possible implementation, a positive drive signal directly drives the control terminal of the first electronic switch, causing the switch to close, thereby allowing the positive terminal of the electric field pulse signal to be applied to a pre-selected electric field patch terminal through the switch. The switch can be a MOSFET, a relay, or a solid-state electronic switch array, and can be controlled synchronously or asynchronously as needed by the system.

[0088] It should be noted that the switch is closed only when the positive drive signal is valid, to avoid energizing under unexpected conditions and to prevent damage to the patch or the generation of unexpected electric field distribution.

[0089] Based on the above steps, this step precisely applies the positive pulse signal to the designated electrode terminal, providing a reliable and controllable basis for the generation of multi-directional electric fields, while ensuring the flexibility of electrode selection and system safety.

[0090] S702. Use the reverse drive signal to control the second electronic switch so that the negative terminal of the electric field pulse signal is connected to the selected electric field patch terminal.

[0091] In one possible implementation, a reverse drive signal controls the second electronic switch to close, connecting the negative terminal of the electric field pulse signal to the target patch terminal, forming an electrode pair corresponding to the positive terminal of the first electronic switch, thereby defining the direction of the electric field. The second electronic switch can be of the same type as the first electronic switch, or different switching devices can be used to optimize switching speed and power handling.

[0092] Based on the above steps, this step precisely applies the negative electrode pulse signal to the designated patch terminal as needed, forming an electrode pair with the positive terminal, providing a reliable electrode path for the subsequent generation of multi-directional alternating electric fields, while ensuring the safety and stability of the operation.

[0093] S703. When both the forward drive signal and the reverse drive signal are invalid, the first electronic switch and the second electronic switch are placed in a high-impedance state.

[0094] In one possible implementation, when both the forward drive signal and the reverse drive signal are invalid, the control circuit switches the two electronic switches to a high-impedance state, blocking the output of the positive and negative pulse signals, thus ensuring the safety of the system circuit during polarity switching or in a power-off state.

[0095] It should be noted that the high-resistivity setting not only prevents current leakage, but also eliminates transient interference caused by switching synchronization delay, ensuring accuracy and stability during the application of multi-directional electric fields.

[0096] Based on the above steps, this step completely isolates the electrode terminals in the switching and inactive states, avoiding short circuits and the generation of unintended electric fields, thereby enhancing system safety at the hardware level and providing a reliable foundation for dynamic reconfiguration of electrode pairs and multi-directional electric field output.

[0097] This embodiment controls the first and second electronic switches respectively using forward and reverse drive signals, achieving precise output of the positive and negative ends of the electric field pulse signal. This provides a controllable electrode connection state for each pair of electrodes, ensuring a reliable foundation for the generation of multi-directional electric fields. An interlocking mechanism ensures that the two switches will never conduct simultaneously, and in the inactive state, the switches are placed in a high-resistance state, effectively avoiding the risks of common short circuits and accidental current leakage, significantly improving the system's safety and stability at the hardware level. By dynamically controlling the electronic switches, this embodiment can flexibly reconfigure the electrode pairing relationship, allowing each patch to sequentially form electrode pairs with other patches and apply electric field pulse signals sequentially, achieving multi-directional, alternating electric field output. This structure not only overcomes the limitations of traditional multi-phase signal driving and reduces hardware complexity but also provides system scalability and operational flexibility, thus achieving efficient, reliable, and controllable multi-directional electric field vector scanning while ensuring safety and stability.

[0098] The above primarily describes the solutions of the embodiments of this application from the perspective of device implementation. It is understood that each device, such as a multi-directional electric field tumor region vector scanning system, includes at least one of the hardware structures and software modules corresponding to the execution of each function in order to achieve the above-mentioned functions. Those skilled in the art should readily recognize that, in conjunction with the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0099] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software programs, implementation can be, in whole or in part, in the form of a computer program product. This computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device containing one or more servers, data centers, etc., that can be integrated with the medium. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks (SSDs)).

[0100] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, disclosure, and appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0101] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from the spirit and scope of this application. Thus, if such modifications and modifications of this application fall within the scope of the claims of this application and their equivalents, this application is also intended to include such modifications and modifications.

Claims

1. A multi-directional electric field vector scanning method for tumor regions, characterized in that, include Obtain the drive signal of the electric field generator; Based on the driving signal, a first control signal and a second control signal are output to control the polarity of the electric field. Based on the driving signal, an electric field pulse signal with positive and negative terminals is generated; The first control signal and the second control signal are interlocked and decoded to generate mutually exclusive forward drive signals and reverse drive signals; Under the control of the positive drive signal and the reverse drive signal, the positive or negative terminal of the electric field pulse signal is connected to two electric field patch terminals or placed in a high-resistance state according to a preset connection rule to form a corresponding electrode connection state. Based on the electrode connection state, the patch pairing relationship is dynamically reconstructed among multiple electric field patches in a preset order, so that each patch forms an electrode pair with other patches in sequence, and the electric field pulse signal is applied in sequence to output an electric field that alternates in multiple directions.

2. The multi-directional electric field vector scanning method for tumor regions according to claim 1, characterized in that, The step of outputting a first control signal and a second control signal for controlling the polarity of the electric field based on the driving signal includes: Convert the drive signal into a digital control signal; Based on the digital control signal, a first control signal and a second control signal are generated to control the forward or reverse connection of the electric field pulse signal.

3. The multi-directional electric field vector scanning method for tumor regions according to claim 1, characterized in that, The step of interlocking and decoding the first and second control signals to generate mutually exclusive forward and reverse drive signals includes: The first and second control signals are decoded using interlocking logic circuitry. Based on the decoding result, mutually exclusive positive and negative drive signals are generated, ensuring that they do not conduct simultaneously at any time.

4. The multi-directional electric field vector scanning method for tumor regions according to claim 1, characterized in that, Under the control of the forward and reverse driving signals, the positive or negative terminal of the electric field pulse signal is connected to two electric field patch terminals or placed in a high-resistance state according to a preset connection rule to form a corresponding electrode connection state, including: A positive drive signal is used to control the first electronic switch, so that the positive terminal of the electric field pulse signal is connected to the selected electric field patch terminal. The reverse drive signal is used to control the second electronic switch, so that the negative terminal of the electric field pulse signal is connected to the selected electric field patch terminal. When both the forward drive signal and the reverse drive signal are invalid, the first electronic switch and the second electronic switch are placed in a high-impedance state.

5. The multi-directional electric field vector scanning method for tumor regions according to claim 1, characterized in that, Based on the electrode connection state, the method of dynamically reconstructing the patch pairing relationship among multiple electric field patches in a preset order, so that each patch sequentially forms an electrode pair with other patches, and sequentially applying the electric field pulse signal to output a multi-directional alternating electric field, includes: S1. Select the first patch and the second patch in a preset order to form an electrode pair, and connect the positive or negative terminal of the electric field pulse signal to the terminal of the electrode pair through an electronic switch matrix; S2. After applying the pulse signal to one electrode pair, switch to the next pair of patches in a preset order and repeat the application of the electric field pulse signal. Steps S1 and S2 are executed repeatedly until each patch forms an electrode pair with other patches in turn to complete one round of pairing, outputting an alternating electric field in multiple directions.

6. A multi-directional electric field tumor region vector scanning system, used to implement the multi-directional electric field tumor region vector scanning method according to any one of claims 1-5, characterized in that, include: Microprocessor, electric field generator, electric field direction control unit, and electric field patch unit; The microprocessor is used to generate a drive signal for the electric field generator and output a first control signal and a second control signal to control the polarity of the electric field. The electric field generator is used to generate an electric field pulse signal based on the driving signal of the electric field generator, the electric field pulse signal including a positive terminal and a negative terminal; The electric field direction control unit is used to perform polarity switching and periodic alternation of the electric field based on the electric field pulse signal and according to the control relationship between the first control signal and the second control signal, and output the corresponding connection status. The electric field patch unit is used to dynamically reconstruct the patch pairing relationship among multiple patches according to a preset order based on the connection status of the electric field direction control unit, so that each patch sequentially forms an electrode pair with other patches, and thereby receives the electric field pulse signal to scan the tumor area.

7. The multi-directional electric field tumor region vector scanning system according to claim 6, characterized in that, The electric field direction control unit includes: a bipolar control unit and an electronic switch unit; The bipolar control unit is used to perform interlock decoding on the first control signal and the second control signal to generate mutually exclusive positive drive signals and reverse drive signals. The electronic switch unit is used to connect the positive or negative terminal of the electric field pulse signal to two electric field patch terminals according to a preset connection rule, or to place it in a high-resistance state, under the control of the positive drive signal and the reverse drive signal, to form a corresponding electrode connection state.

8. The multi-directional electric field tumor region vector scanning system according to claim 6, characterized in that, The microprocessor is also used to: collect temperature information of the electric field patch and adjust the output of the electric field pulse signal according to the temperature information; and monitor the conduction state of the electronic switch unit and detect abnormal conduction or high resistance state.

9. The multi-directional electric field tumor region vector scanning system according to claim 6, characterized in that, The electric field patch unit includes multiple electric field patches; The plurality of electric field patches surround the object to be scanned, forming an electric field zone around the torso region of the object to be scanned.

10. The multi-directional electric field tumor region vector scanning system according to claim 6, characterized in that, The electric field patch unit is also used for: T1. Select the first patch and the second patch in a preset order to form an electrode pair, and connect the positive or negative terminal of the electric field pulse signal to the terminal of the electrode pair through an electronic switch matrix; T2. After applying the pulse signal to one electrode pair, switch to the next pair of patches in a preset order and repeat the application of the electric field pulse signal. Steps T1 and T2 are executed repeatedly until each patch forms an electrode pair with other patches in turn to complete one round of pairing, outputting an alternating electric field in multiple directions.

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