High-voltage pulse self-adaptive bipolar output system

Abstract

The invention discloses a high-voltage pulse self-adaptive bipolar output system, which comprises a pulse waveform input module, a load, an electrode 1 and an electrode 2 which are connected with the load, a controller and a waveform detection module, and is characterized in that a plurality of high-voltage switches are connected between the pulse waveform input module and the electrode 1 and the electrode 2 of the load; the controller is electrically connected with the high-voltage switch to realize on-off control, so that the pulse waveform input module outputs a positive-phase waveform or a negative-phase waveform after inputting a positive-phase waveform, the waveform detection module is electrically connected with the controller and a load, the waveform detection module transmits voltage or current data to the controller, the controller monitors whether the waveforms are abnormal in real time, and if yes, the controller is started. In the continuous waveform input process, the waveform detection module detects and attenuates load voltage or current and sends the load voltage or current to the controller for judgment, and the controller monitors whether the waveform is abnormal or not in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of pulsed electromagnetic field, and particularly to a high-voltage pulse adaptive bipolar output system. Background Art

[0002] PEMF (Pulsed Electromagnetic Field) is a technology that acts on biological tissues or materials through pulsed electromagnetic fields and is widely used in medical, rehabilitation, agricultural, and industrial fields. In PEMF technology, the waveform is one of the core parameters, directly affecting the biological effect or material processing effect. For greater safety, PEMF devices often output energy to the load through the closing control of high-voltage switches, which poses higher requirements for the stability of high-voltage switches. When a high-voltage switch malfunctions, it will affect the waveform output, thereby affecting the treatment effect.

[0003] Traditional systems can only output unipolarity and cannot achieve positive and negative pulse switching, restricting the application of PEMF technology in scenarios requiring bidirectional excitation. They usually adopt a fixed combination of high-voltage switches, lacking flexibility. Once a certain high-voltage switch fails, such as being unable to close normally or having too large a closing impedance, the entire system may not be able to output waveforms normally, and may even cause equipment damage. In addition, when detecting waveform abnormalities in existing systems, it is often only possible to determine whether the waveform is abnormal, but it is difficult to quickly and accurately locate the cause of the failure, resulting in an extended maintenance and repair time.

[0004] In addition, the waveform detection module of existing systems usually can only passively monitor waveforms and cannot automatically switch the high-voltage switch combination to maintain normal output when detecting abnormalities. This not only affects the reliability of the system but may also lead to production interruption or equipment shutdown, increasing maintenance costs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a high-voltage pulse adaptive bipolar output system, which provides a high-voltage pulse system that can flexibly switch the high-voltage switch combination, quickly locate the cause of the failure, and maintain normal waveform output.

[0006] The present invention is realized by the following technical solutions: A high-voltage pulse adaptive bipolar output system of the present invention includes a pulse waveform input module, a load, electrode 1 and electrode 2 connected to the load, a controller, and a waveform detection module. It is characterized in that a plurality of high-voltage switches are connected between the pulse waveform input module and electrode 1 and electrode 2 of the load, and the controller is electrically connected to the high-voltage switches to realize on-off control. After the pulse waveform input module inputs a positive-phase waveform, it outputs a positive-phase or negative-phase waveform. The waveform detection module is electrically connected to the controller and the load. The waveform detection module transmits voltage or current data to the controller. The controller monitors in real time whether the waveform is abnormal. The controller controls the on-off combination of the high-voltage switches in real time according to the data of the waveform detection module.

[0007] Beneficially, wherein, the waveform detection module detects and attenuates the load voltage or current and sends it to the controller for judgment, and the controller monitors in real time whether the waveform is abnormal.

[0008] Beneficially, wherein, the high-voltage switch is a high-voltage normally open relay, a contactor, a thyristor or other switches.

[0009] Beneficially, wherein, the high-voltage switches include K1+, K2+, K3+, K4+, K1-, K2-, K3-, K4-, K1*, K2*.

[0010] Beneficially, wherein, K1+, K1* and electrode 1 are connected in series, K2+, K2* and electrode 2 are connected in series, K3+ and electrode 1 are connected in series, K4+ and electrode 2 are connected in series, K1-, K1* and electrode 1 are connected in series, K2-, K2* and electrode 2 are connected in series, K3- and electrode 1 are connected in series, K4- and electrode 2 are connected in series. K1+, K2+, K3+, K4+ are connected to the positive terminal of the pulse waveform input module, and K1-, K2-, K3-, K4- are connected to the negative terminal of the pulse waveform input module. K1+, K2+, K3+, K4+ are arranged in parallel with each other, and K1-, K2-, K3-, K4- are arranged in parallel with each other.

[0011] Beneficially, wherein, when a positive-phase pulse wave is input, the high-voltage switches K1+, K2-, K1*, K2* are closed, and the rest of the high-voltage switches are opened, then a positive-phase pulse is output between electrode 1 and electrode 2. When the high-voltage switches K1-, K2+, K1*, K2* are closed, and the rest of the high-voltage switches are opened, then a negative-phase pulse is output between electrode 1 and electrode 2.

[0012] A method for detecting waveform anomalies and outputting normal waveforms using a high-voltage pulse adaptive bipolar output system: In the first step, disconnect all high-voltage switches, close K1+, K2-, K1*, and K2*, output a positive-phase pulse, and the waveform detection module detects whether there is an anomaly. If there is no anomaly, normal output is maintained. If there is an anomaly, the second step is started to determine the cause of the waveform detection anomaly. In the second step, when a waveform detection anomaly occurs in the result of the first step, close K3+. The waveform detection module detects whether there is an anomaly. If the waveform output is normal, it indicates that K1+ cannot be closed normally. If the waveform output is abnormal, the third step is performed. In the third step, when a waveform detection anomaly occurs in the result of the second step, based on the first step, close K4-. The waveform detection module detects whether there is an anomaly. If the waveform output is normal, it indicates that K2- cannot be closed normally. If the waveform output is abnormal, the fourth step is performed. In the fourth step, disconnect all high-voltage switches, close K3+, K2-, and K2*. The waveform detection module detects whether there is an anomaly. If the waveform output is normal, it indicates that the withstand voltage or insulation performance of K1- has decreased. If the waveform output is abnormal, the fifth step is performed. In the fifth step, when a waveform detection anomaly occurs in the result of the fourth step, disconnect all high-voltage switches, disconnect K3+ and K2* and close K1+, K1*, and K4-. The waveform detection module detects whether there is an anomaly. If the waveform output is normal, it indicates that the withstand voltage or insulation performance of the high-voltage switch K2+ has decreased.

[0013] The beneficial effects of the present invention are as follows: First, when the system inputs a positive-phase waveform, the controller is electrically connected to K1+, K2+, K3+, K4+, K1-, K2-, K3-, K4-, K1*, and K2* to achieve on-off control, enabling the pulse circuit to output a positive-phase or negative-phase waveform after inputting a positive-phase waveform.

[0014] During continuous waveform input, the waveform detection module detects and attenuates the load voltage or current, and sends it to the controller for judgment. The controller monitors in real time whether the waveform is abnormal.

[0015] By performing on-off closing of the high-voltage switches and controlling the on-off of the high-voltage switches to judge the following two abnormal situations of positive-phase pulses: First, K1+ and K2- cannot be closed normally or the closing impedance is too large, resulting in abnormal positive-phase pulses; second, the withstand voltage or insulation performance of K2+ or K1- decreases during turn-off, and the leakage current is too large, resulting in abnormal positive-phase pulses. And during the detection process, as long as the waveform detection is normal, normal waveform input can be maintained, which is equivalent to knowing the cause of the waveform anomaly and being able to maintain normal waveform output.

[0016] When K1+, K1*, K2- and K2* are closed, a positive-phase waveform is output, but the waveform is abnormal at this time. By closing K3+, K3+ is used to replace K1+ and K1* to be electrically connected to electrode 1. Since the probability of K1+ being abnormal is generally high, it can be directly judged that the abnormal waveform is caused by the failure of K1+ to close normally.

[0017] When K1+, K1*, K2- and K2* are closed, a positive-phase waveform is output, but the waveform is abnormal at this time. By closing K4-, K4- is used to replace K2- and K* to be electrically connected to electrode 2. Since the probability of K2- being abnormal is generally high, it can be directly judged that the abnormal waveform is caused by the failure of K2- to close normally.

[0018] When K1+, K1*, K2- and K2* are closed, a positive-phase waveform is output. It has been checked that K1+ and K2- can be closed normally, but the waveform is abnormal at this time. Disconnect all high-voltage switches, close K3+, K2- and K2*, and the waveform detection module detects whether it is abnormal. By using K3+ to replace K1- to connect to electrode 1, using the elimination method, if the waveform output is normal, it means that the withstand voltage or insulation performance of K1- has decreased.

[0019] When K1+, K1*, K2- and K2* are closed, a positive-phase waveform is output. It has been checked that K1+ and K2- can be closed normally, but the waveform is abnormal at this time. Disconnect all high-voltage switches, disconnect K3+ and K2* and close K1+, K1* and K4-, and the waveform detection module detects whether it is abnormal. By using K4- to replace K2+ to connect to electrode 2, using the elimination method, if the waveform output is normal, it means that the withstand voltage or insulation performance of the high-voltage switch K2+ has decreased.

[0020] K1+, K2+, K3+ and K4+ are connected in parallel to achieve multi-path redundancy. When a certain switch fails, other switches can automatically cut in to maintain the output; K1* and K2* are common switches used to control the on-off of the electrode and the high-voltage switch group to avoid short circuits caused by multiple groups of switches being turned on at the same time. Brief Description of the Drawings

[0021] For ease of explanation, the present invention will be described in detail by the following specific embodiments and accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a high-voltage pulse adaptive bipolar output system of the present invention; Figure 2 For Figure 1 The detection logic schematic diagram of the system in Figure 3 For Figure 1 The schematic diagram of the system closing the high-voltage switches K1+, K2-, K1*, K2*, and opening the rest of the high-voltage switches to output a positive pulse wave in Figure 4 For Figure 1 Figure 4 , the system closes the high-voltage switches K1-, K2+, K1*, K2*, and opens the remaining high-voltage switches to output a negative-phase pulse schematic diagram; Figure 5 For Figure 3 Figure 4 after the system closes K3+; Figure 6 For Figure 5 Figure 4 after the system closes K4-; Figure 7 For Figure 6 Figure 4 after all high-voltage switches are opened and then K3+, K2-, and K2* are closed; Figure 8 For Figure 7 Figure 4 after K3+ and K2* are opened and K1+, K1*, and K4- are closed. Detailed implementation method

[0023] As Figures 1 - 8 shown, the present invention is described in detail. For the convenience of narration, the following directions are defined as follows: The up, down, left, right, front, and back directions mentioned below are consistent with the up, down, left, right, front, and back directions of the projection relationship of itself. A high-voltage pulse adaptive bipolar output system of the present invention includes a pulse waveform input module, electrodes 1 and 2 connected to a load, a controller, and a waveform detection module. A plurality of high-voltage switches are connected between the pulse waveform input module and the load electrodes 1 and 2. The high-voltage switches include K1+, K2+, K3+, K4+, K1-, K2-, K3-, K4-, K1*, K2*. The controller is electrically connected to the K1+, K2+, K3+, K4+, K1-, K2-, K3-, K4-, K1*, K2* to realize on-off control so that the pulse circuit can output a positive-phase or negative-phase waveform after inputting a positive-phase waveform. The waveform detection module is electrically connected to the controller and the load. The waveform detection module detects the load voltage or current, attenuates it, and sends it to the controller for judgment. The controller monitors in real time whether the waveform is abnormal. Figure 1 Preferably, the waveform detection module includes an attenuation circuit to attenuate the high-voltage signal at the load end to a safe voltage range (such as 0-5V) that can be received by the controller.

[0024] Preferably, the controller presets a voltage or current threshold, and when the detected value exceeds the threshold, it is determined that the waveform is abnormal.

[0025] Preferably, the high-voltage switch can be a high-voltage normally open relay, contactor, thyristor or other switches.

[0026]

[0027] ​Beneficially, K1+, K1*, and electrode 1 are connected in series, K2+, K2*, and electrode 2 are connected in series, K3+ and electrode 1 are connected in series, K4+ and electrode 2 are connected in series, K1-, K1*, and electrode 1 are connected in series, K2-, K2*, and electrode 2 are connected in series, K3- and electrode 1 are connected in series, K4- and electrode 2 are connected in series. K1+, K2+, K3+, and K4+ are connected to the positive terminal of the pulse waveform input module, K1-, K2-, K3-, and K4- are connected to the negative terminal of the pulse waveform input module. K1+, K2+, K3+, and K4+ are connected in parallel with each other, and K1-, K2-, K3-, and K4- are connected in parallel with each other.

[0028] Beneficially, when a positive-phase pulse wave is input, close the high-voltage switches K1+, K2-, K1*, and K2*, and open the remaining high-voltage switches. Then, a positive-phase pulse is output between electrode 1 and electrode 2. Close the high-voltage switches K1-, K2+, K1*, and K2*, and open the remaining high-voltage switches. Then, a negative-phase pulse is output between electrode 1 and electrode 2. The waveform detection and controller continuously detect whether the waveform of the load is abnormal.

[0029] Beneficially, by controlling the on / off of the high-voltage switches to determine the following two abnormal conditions of the positive-phase pulse: First, K1+ and K2- cannot be normally closed or the closing impedance is too large, resulting in an abnormal positive-phase pulse. Second, the withstand voltage or insulation performance of K2+ or K1- decreases during turn-off, and the leakage current is too large, resulting in an abnormal positive-phase pulse.

[0030] Advantageously, when a positive-phase waveform is output, the following method can be used to detect the cause of the waveform abnormality and maintain normal output when the waveform detection is normal: the first step is to disconnect all high-voltage switches, close K1+, K2-, K1*, K2*, output a positive-phase pulse, and the waveform detection module detects whether it is abnormal. If there is no abnormality, maintain normal output. If there is an abnormality, start the second step to determine the cause of the abnormal waveform detection; the second step is to close K3+ when the waveform detection is abnormal in the result of the first step, and the waveform detection module detects whether it is abnormal. If the waveform output is normal, it means that K1+ cannot be closed normally. If the waveform output is abnormal, proceed to the third step; the third step is to close K4- based on the first step when the waveform detection is abnormal in the result of the second step, and the waveform detection module detects whether it is abnormal. If the waveform output is normal, it means that It means that K2- cannot be closed normally. If the waveform output is abnormal, proceed to step 4; in step 4, disconnect all high-voltage switches, close K3+, K2- and K2*, and the waveform detection module detects whether it is abnormal. If the waveform output is normal, it means that the withstand voltage or insulation performance of K1- is reduced. If the waveform output is abnormal, proceed to step 5; in step 5, when the waveform detection is abnormal in the result of step 4, disconnect all high-voltage switches, disconnect K3+ and K2* and close K1+, K1* and K4-. The waveform detection module detects whether it is abnormal. If the waveform output is normal, it means that the withstand voltage or insulation performance of the high-voltage switch K2+ is reduced.

[0031] The above are only specific implementation methods of the present invention, but the protection scope of the present invention is not limited to this. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention; therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. A high-voltage pulse adaptive bipolar output system, comprising a pulse waveform input module, a load, an electrode 1 and an electrode 2 connected to the load, a controller and a waveform detection module, characterized in that, There are multiple high-voltage switches connected between the pulse waveform input module and the load electrodes 1 and 2. The controller is electrically connected to the high-voltage switches to achieve on / off control. After the pulse waveform input module inputs a positive-phase waveform, it outputs a positive-phase or negative-phase waveform. The waveform detection module is electrically connected to the controller and the load. The waveform detection module transmits voltage or current data to the controller. The controller monitors in real time whether the waveform is abnormal. The controller controls the on / off combination of the high-voltage switches in real time according to the data of the waveform detection module.

2. The high-voltage pulse adaptive bipolar output system according to claim 1, wherein: The waveform detection module detects and attenuates the load voltage or current and sends it to the controller for judgment. The controller monitors in real time whether the waveform is abnormal.

3. A high-voltage pulse adaptive bipolar output system according to claim 2, characterized in that: The high-voltage switches are high-voltage normally open relays, contactors, thyristors or other switches.

4. A high-voltage pulse adaptive bipolar output system according to any one of claims 1 to 3, characterized in that: The high-voltage switches include K1+, K2+, K3+, K4+, K1-, K2-, K3-, K4-, K1*, K2*.

5. A high-voltage pulse adaptive bipolar output system according to claim 4, characterized in that: K1+, K1* are in series with electrode 1, K2+, K2* are in series with electrode 2, K3+ is in series with electrode 1, K4+ is in series with electrode 2, K1-, K1* are in series with electrode 1, K2-, K2* are in series with electrode 2, K3- is in series with electrode 1, K4- is in series with electrode 2. K1+, K2+, K3+, K4+ are connected to the positive terminal of the pulse waveform input module, and K1-, K2-, K3-, K4- are connected to the negative terminal of the pulse waveform input module. K1+, K2+, K3+, K4+ are arranged in parallel, and K1-, K2-, K3-, K4- are arranged in parallel.

6. The high-voltage pulse adaptive bipolar output system according to claim 5, wherein: When a positive-phase pulse wave is input, close the high-voltage switches K1+, K2-, K1*, K2*, and open the other high-voltage switches. Then a positive-phase pulse is output between electrode 1 and electrode 2. Close the high-voltage switches K1-, K2+, K1*, K2*, and open the other high-voltage switches. Then a negative-phase pulse is output between electrode 1 and electrode 2.

7. A method for abnormal judgment of waveform detection and normal waveform output by using the high-voltage pulse adaptive bipolar output system described in claim 4, characterized in that: First step, disconnect all high-voltage switches, close K1+, K2-, K1*, K2*, and output a positive-phase pulse. The waveform detection module detects whether it is abnormal. If there is no abnormality, maintain the normal output. If there is an abnormality, start the second step to judge the reason for the waveform detection abnormality. Second step, when the waveform detection is abnormal in the result of the first step, close K3+. The waveform detection module detects whether it is abnormal. If the waveform output is normal, it means that K1+ cannot be closed normally. If the waveform output is abnormal, proceed to the third step. Third step, when the waveform detection is abnormal in the result of the second step, on the basis of the first step, close K4-. The waveform detection module detects whether it is abnormal. If the waveform output is normal, it means that K2- cannot be closed normally. If the waveform output is abnormal, proceed to the fourth step. Fourth step, disconnect all high-voltage switches, close K3+, K2- and K2*. The waveform detection module detects whether it is abnormal. If the waveform output is normal, it means that the withstand voltage or insulation performance of K1- has decreased. If the waveform output is abnormal, proceed to the fifth step. Step 5, when waveform detection in the result of Step 4 is abnormal, disconnect all high-voltage switches, disconnect K3+ and K2*, and close K1+, K1*, and K4-. The waveform detection module checks for abnormalities. If the waveform output is normal, it indicates that the voltage withstand or insulation performance of the high-voltage switch K2+ has deteriorated.

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