Medical power supply and multistage safety protection method thereof

Abstract

According to the medical power supply and the multi-stage safety protection method thereof, each secondary power supply circuit is equipped with a circuit protection module, and when an output current signal exceeds a preset range, the protection module is used for generating a shutdown protection signal in time to prevent continuous occurrence of circuit overload or other abnormal conditions, so that the safety of equipment and a patient is effectively protected; the monitoring module is used for monitoring the operation states of the main power supply circuit and the secondary power supply circuit in real time, sending abnormal information to the control module when the abnormal information is monitored, ensuring that the control module quickly responds, processing the abnormal information, and analyzing a processing result based on a preset rule to obtain an adjustment strategy; the working state of the main power supply circuit and / or the corresponding abnormal secondary power supply circuit is adjusted based on the adjustment strategy, dynamic adjustment of the system is realized, and the stability and reliability of the power supply in a complex medical environment are enhanced.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical power supplies, and in particular relates to a medical power supply and a multi-level safety protection method thereof. Background Art

[0002] In modern medical equipment, the power supply system is not only the core guarantee for the normal operation of the equipment, but also directly related to the safety of patients and medical staff. Therefore, the medical power supply system must have strict isolation protection, high reliability and high-precision power supply capabilities to ensure the stable operation of the equipment in various medical scenarios. However, the complexity and uncertainty of the medical environment, such as power supply fluctuations, equipment failures or high-load operation, put higher requirements on the power supply system. To this end, the power supply system must also have real-time status monitoring and rapid response capabilities to identify abnormalities in a timely manner and take corresponding measures.

[0003] Although existing medical power systems have improved in terms of isolation protection and power supply reliability, their protection mechanisms are usually relatively simple and cannot flexibly respond to complex medical needs. Especially when facing a variety of abnormal conditions, traditional protection methods are difficult to balance the continuity and safety of equipment operation, which may affect the overall performance of medical equipment. Therefore, how to achieve multi-level safety protection, intelligent operation status monitoring, and efficient power supply management in the power system has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a medical power supply and a multi-level safety protection method thereof, which aims to achieve multi-level safety protection for the power supply of medical equipment while realizing intelligent operation status monitoring and efficient power supply management through the combination of multi-level safety protection and processing of abnormal information.

[0005] An embodiment of the present invention provides a medical power supply, including: A main power supply circuit, the input end of which is connected to an external power supply and is used to provide basic power supply requirements for a plurality of secondary power supply circuits; Each of the secondary power supply circuits is equipped with a corresponding circuit protection module, the input end of each of the circuit protection modules is connected to the output end of the corresponding secondary power supply circuit, and each of the circuit protection modules is used to generate a shutdown protection signal to the main power supply circuit when the output current signal of the corresponding secondary power supply circuit exceeds a preset current range; Each of the secondary power supply circuits is used to provide multiple outputs to adapt to various power supply requirements; A monitoring module, used for detecting the output of the main power circuit and each of the secondary power circuits in real time, and sending the abnormal information to the control module after detecting the abnormal information; The control module is used to process the abnormal information, analyze the processing results based on preset rules, obtain an adjustment strategy, and adjust the main power circuit based on the adjustment strategy, and / or adjust the working state of the secondary power circuit corresponding to the abnormality.

[0006] In one embodiment, the circuit protection module includes a current sensor, a comparator, a reference voltage source, a MOS tube and a relay; the input end of the current sensor is connected to the output end of the secondary power supply circuit corresponding to it; the non-inverting input end of the comparator is connected to the output end of the current sensor, the inverting input end of the comparator is connected to the reference voltage source, and the output end of the comparator is connected to the gate of the MOS tube; the drain of the MOS tube is connected to the control end of the relay, and the source of the MOS tube is grounded; the contacts of the relay are connected to the main power supply circuit.

[0007] In one embodiment, the medical power supply further includes: a plurality of DC / DC converters, and each DC / DC converter is respectively arranged between the main power circuit and each secondary power circuit.

[0008] In one embodiment, the medical power supply further includes a communication port, and the medical power supply exchanges data with the monitoring device through the communication port.

[0009] A second aspect of the present application provides a multi-level safety protection method for a medical power supply, which is applied to the medical power supply of the first aspect above. The control method of the medical power supply includes: Processing abnormal information of a main power circuit and / or several secondary power circuits; Analyze the processing results based on preset rules to obtain adjustment strategies; The main power circuit is adjusted based on the adjustment strategy, and / or the working state of the secondary power circuit corresponding to the abnormality is adjusted.

[0010] In one embodiment, the abnormal information of the main power circuit and / or several secondary power circuits is processed, including: Each abnormal information is divided into its corresponding abnormal information set, and the level corresponding to each abnormal information is matched in the corresponding abnormal information set.

[0011] In one embodiment, the processing result is analyzed based on preset rules to obtain an adjustment strategy, including: Match the level corresponding to each abnormal information with the membership degree in the preset rule base to obtain the membership degree corresponding to each input variable; The adjustment strategy of the power supply mode is matched according to the membership degree.

[0012] In one embodiment, the preset rule base includes a mapping relationship between the level corresponding to the abnormal information and the membership degree.

[0013] In one embodiment, the abnormal information includes an overload abnormality, a temperature deviation abnormality, and / or a power supply delay abnormality.

[0014] In one embodiment, the level of the abnormal information includes: a current overload level, a temperature deviation level, and / or a power supply delay level.

[0015] The beneficial effects of the embodiments of the present application are as follows: each secondary power supply circuit is equipped with a circuit protection module. When the output current signal of a secondary power supply circuit exceeds a preset range, the protection module is used to generate a shutdown protection signal in time to prevent the circuit from being overloaded or other abnormal conditions from continuing to occur, thereby effectively protecting the safety of the equipment and the patient. The operating status of the main power supply circuit and the secondary power supply circuit is monitored in real time through the monitoring module, and when abnormal information is detected, the abnormal information is sent to the control module to ensure that the control module responds quickly, and the abnormal information is processed, and the processing results are analyzed based on preset rules to obtain an adjustment strategy; based on the adjustment strategy, the main power supply circuit and / or the working status of the corresponding abnormal secondary power supply circuit are adjusted, thereby enhancing the stability and reliability of the power supply in a complex medical environment. The aim is to achieve multi-level safety protection for the power supply of medical equipment while realizing intelligent operating status monitoring and efficient power supply management. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic block diagram of a medical power supply provided in accordance with an embodiment of the present invention; Figure 2 A circuit diagram of a circuit protection provided by an embodiment of the present application; Figure 3 A circuit diagram of a current sensor provided in one embodiment of the present application; Figure 4 A flowchart of a multi-level safety protection method for a medical power supply provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0020] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] In the description of the embodiments of the present application, the term "multi-frame" refers to more than two (including two).

[0024] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0025] The embodiment of the present invention provides a medical power supply and a multi-level safety protection method thereof, wherein the medical power supply 10, see Figure 1As shown, it includes: a main power circuit 100, a plurality of secondary power circuits 102, a circuit protection module 103, a monitoring module 104 and a control module 105.

[0026] The input end of the main power supply circuit 100 is connected to an external power supply to provide basic power supply requirements for several secondary power supply circuits 102; each secondary power supply circuit 102 is equipped with a corresponding circuit protection module 103, and each circuit protection module 103 is used to generate a shutdown protection signal to the main power supply circuit 100 when the output current signal of the corresponding secondary power supply circuit 102 exceeds the preset current range. Each secondary power supply circuit 102 is used to provide multiple outputs to adapt to various power supply requirements. The monitoring module 104 is used to detect the output of the main power supply circuit 100 and each secondary power supply circuit 102 in real time, and after detecting abnormal information, send abnormal information to the control module 105. The control module 105 is used to process the abnormal information, analyze the processing results based on preset rules, obtain an adjustment strategy, and adjust the working state of the main power supply circuit 100 and / or the corresponding abnormal secondary power supply circuit 102 based on the adjustment strategy.

[0027] In this embodiment, each secondary power supply circuit 102 is equipped with a circuit protection module 103. When the output current signal of a secondary power supply circuit 102 exceeds a preset range, the circuit protection module 103 promptly generates a shutdown protection signal, so that the main power supply circuit 100 is disconnected from the power supply to prevent the secondary power supply circuit 102 from being overloaded or other abnormal conditions from continuing to occur, thereby effectively protecting the safety of equipment and patients. The operating status of the main power supply circuit 100 and each secondary power supply circuit 102 is monitored in real time through the monitoring module 104, and when abnormal information is detected, the abnormal information is sent to the control module 105 to ensure that the control module 105 responds quickly and adjusts the working status of the main power supply circuit 100 or the corresponding secondary power supply circuit 102 according to the received abnormal information, thereby realizing dynamic regulation and enhancing the stability and reliability of the power supply in a complex medical environment.

[0028] In specific applications, please refer to Figure 2 As shown, Figure 2A circuit diagram of a circuit protection provided in an embodiment of the present application. The circuit protection module 103 includes a current sensor 200, a comparator 201, a reference voltage source 202, a MOS tube 203 and a relay 204. The input end of the current sensor 200 is connected to the output end of the secondary power supply circuit 102 corresponding to it; the non-inverting input end of the comparator 201 is connected to the output end of the current sensor 200, the inverting input end of the comparator 201 is connected to the reference voltage source 202, and the output end of the comparator 201 is connected to the gate of the MOS tube 203; the drain of the MOS tube 203 is connected to the control end of the relay 204, the source of the MOS tube 203 is grounded, and the contact of the relay 204 is connected to the main power supply circuit 100.

[0029] The circuit protection module 103 collects the output current signal of the corresponding secondary power supply circuit 102 through the current sensor 200, converts it into the corresponding voltage signal, and then receives the voltage signal through the comparator 201 and compares the voltage signal with the reference voltage signal output by the reference voltage source 202. Specifically, when the voltage signal exceeds or equals the reference voltage signal, a high-level signal is output, the MOS tube 203 is turned on, and the relay 204 is driven to generate a protection signal, triggering the main power supply circuit 100 to disconnect the power supply to the secondary power supply circuit 102; when the voltage signal is lower than the reference voltage signal, a low-level signal is output, the MOS tube 203 is turned off, and the relay 204 is closed. The circuit protection module 103 can detect the output current of the secondary power supply circuit 102 in real time, convert the actual current into a voltage signal, and compare it with the preset reference voltage value. When it is detected that the output voltage exceeds the preset safety range, the comparator 201 controls the relay 204 to trigger the protection mechanism by triggering the MOS tube 203, which can effectively protect the safe use of the medical power supply.

[0030] In one embodiment, the current sensor 200 includes a shunt resistor 300 (see Figure 3 Specifically, the shunt resistor 300 can ensure accuracy stability by using a metal alloy or graphene composite material with a low temperature coefficient (TCR). The shunt resistor 300 can reduce the thermal drift effect and improve the linear response through a double-layer distributed design.

[0031] Also, see Figure 3As shown, the shunt resistor 300 and the comparator 201 may also include: a differential amplifier 301, a low-pass filter 302 and an analog-to-digital converter 303. Among them, one end (high potential end) of the shunt resistor 300 is connected to the positive electrode of the secondary power supply circuit 102 and the positive input end of the differential amplifier 301, and the other end (low potential end) is connected to the negative input end of the differential amplifier 301. The output end of the differential amplifier 301 is connected to the input end of the low-pass filter 302, and the voltage signal at both ends of the shunt resistor 300 is collected, and the amplified signal is output. The amplified signal passes through the low-pass filter 302, and the high-frequency noise is removed before inputting the analog-to-digital converter 303. The input end of the analog-to-digital converter 303 is connected to the output end of the low-pass filter 302, and the output end of the analog-to-digital converter 303 is connected to the comparator 201, which is used to convert the filtered signal into a digital signal and output an accurate voltage value.

[0032] The comparator 201 may be a LM393 chip. By comparing the actual voltage signal of the current sensor 200 with the reference voltage signal, when the voltage signal of the current sensor 200 exceeds the reference voltage, the comparator outputs a high level signal.

[0033] The reference voltage source 202 can be a TL431 voltage regulator, which provides a stable reference voltage as a safety threshold. In practical applications, the value of the reference voltage can be adjusted as needed to flexibly set the triggering condition of the overcurrent protection. The MOS tube 203 is used as a switching element to control the operation of the relay 204 according to the output of the comparator 201. When the MOS tube 203 is turned on, the contact of the relay 204 is actuated to disconnect the power supply of the main power supply circuit 100 to prevent the overcurrent from further damaging the power supply. When the MOS tube is turned off, the relay 204 is reset to restore normal power supply.

[0034] In one embodiment, the medical power supply 10 further includes a plurality of DC / DC converters, and each DC / DC converter is respectively arranged between the main power circuit and each secondary power circuit (not shown in the figure). By introducing a DC / DC converter between the main power circuit 100 and each secondary power circuit 102, the voltage output by the main power circuit 100 can be converted into different voltages required by different secondary power circuits 102 through the regulation of the DC / DC converter, so that each secondary power circuit 102 can stably obtain the required voltage according to actual needs.

[0035] In one embodiment, the medical power supply 10 further includes a communication port, through which the medical power supply 10 exchanges data with the monitoring device, so as to upload the power supply data to the monitoring device, so that the monitoring device can analyze the power supply data to perform a power supply risk warning analysis, thereby further improving the safety of using the power supply.

[0036] See also Figure 4 , Figure 4 A schematic diagram of a multi-level safety protection method for a medical power supply provided in an embodiment of the present application. The control method for the medical power supply is applied to Figures 1 to 3 The medical power supply shown is as follows: S401: Processing abnormal information of a main power circuit and / or several secondary power circuits.

[0037] In one embodiment, abnormal information of a main power circuit and / or several secondary power circuits is processed, including: dividing each abnormal information into respective corresponding abnormal information sets, and matching the level corresponding to each abnormal information in the corresponding abnormal information sets.

[0038] Specifically, the abnormal information includes an overload abnormality, a temperature deviation abnormality, and / or a power supply delay abnormality. The level of the abnormal information includes: a current overload level, a temperature deviation level, and / or a power supply delay level. Each type of abnormal information corresponds to a different abnormal information set, and in each abnormal information set there is an association relationship between the abnormal information of the corresponding category and the level corresponding to the abnormal information.

[0039] Among them, overload anomaly refers to the ratio of the actual monitored current to the rated current, temperature deviation anomaly refers to the difference between the actual monitored temperature value and the preset normal working temperature value, and power supply delay anomaly refers to the difference between the actual monitored power supply time and the expected power supply time. By measuring the actual data and combining the preset specification parameters of the power supply, after calculating the overload anomaly, temperature deviation anomaly and power supply delay anomaly respectively, the corresponding anomaly level is matched in the anomaly information set corresponding to each anomaly, providing a data basis for subsequent fuzzy analysis.

[0040] S402: Analyze the processing result based on preset rules to obtain an adjustment strategy.

[0041] The processing results are analyzed based on preset rules to obtain an adjustment strategy, including: matching the level corresponding to each abnormal information with the membership in the preset rule base to obtain the membership corresponding to each input variable; and matching the adjustment strategy of the power supply mode according to the membership.

[0042] The preset rule base includes a mapping relationship between the level corresponding to the abnormal information and the degree of membership. Exemplarily, the degree of membership is used to describe the degree of belonging of the level corresponding to the abnormal information in its corresponding rule base. This is because the level corresponding to the abnormal information is determined by the abnormal information, and different abnormal information may have the same level of corresponding abnormality within a certain range of values. For example, the current overload abnormality level includes "low" level, "medium" level and "high" level, wherein the current overload range corresponding to the "low" level is 0~30%, the current overload range corresponding to the "medium" level is 31%~60%, and the circuit overload range corresponding to the "high" level is greater than 61%. Therefore, it is necessary to further match the degree of belonging of different abnormal levels in their corresponding rule bases, that is, the probability of belonging to the corresponding abnormal level, in order to further accurately determine the preferred power supply mode adjustment strategy.

[0043] For example, assuming that the level corresponding to the current overload anomaly is the "medium" level, the corresponding membership is matched to 0.7, that is, the probability that it belongs to the "medium" level is 0.7; assuming that the level corresponding to the current overload anomaly is the "high" level, the corresponding membership is matched to 0.3, that is, the probability that it belongs to the "high" level is 0.3. At this time, the power supply mode adjustment strategy matching is preferably performed with a high membership.

[0044] In addition, when there are levels corresponding to current overload anomalies, levels corresponding to temperature deviation anomalies, and / or levels corresponding to power supply delay anomalies at the same time, the comprehensive membership of the condition part is calculated, and then the rule with the largest membership (that is, the rule that best matches the current situation) is selected. The adjustment strategy corresponding to the rule with the largest match is the final power supply mode adjustment plan. Specifically, the comprehensive membership of the calculated condition part is expressed as: ( ), the corresponding final selection rule is: gmax( ),in, Indicates the level corresponding to the current overload abnormality. It is the abnormal level of temperature deviation. It is the abnormal level of power supply delay.

[0045] S403: Adjusting the main power circuit and / or the working state of the corresponding abnormal secondary power circuit based on the adjustment strategy.

[0046] For example, assuming that the current overload anomaly of the secondary power circuit is at a "medium" level, the temperature deviation anomaly is a slight overheating, and the power supply delay anomaly is a short delay, the corresponding adjustment strategy is to reduce the power of the secondary power circuit by 10%.

[0047] By calculating the comprehensive membership to match the adjustment strategy, an accurate power supply adjustment strategy can be provided.

[0048] The beneficial effects of the embodiments of the present application are as follows: each secondary power supply circuit is equipped with a circuit protection module. When the output current signal of a secondary power supply circuit exceeds a preset range, the protection module is used to generate a shutdown protection signal in time to prevent the circuit from being overloaded or other abnormal conditions from continuing to occur, thereby effectively protecting the safety of the equipment and patients. The operating status of the main power supply circuit and the secondary power supply circuit is monitored in real time through the monitoring module, and when abnormal information is detected, the abnormal information is sent to the control module to ensure that the control module responds quickly, and the abnormal information is processed according to the received abnormal information, and the processing results are analyzed based on preset rules to obtain an adjustment strategy; based on the adjustment strategy, the main power supply circuit and / or the working status of the corresponding abnormal secondary power supply circuit are adjusted to achieve dynamic adjustment of the power supply system, thereby enhancing the stability and reliability of the power supply in a complex medical environment. The invention aims to achieve multi-level safety protection for the power supply of medical equipment while realizing intelligent operation status monitoring and efficient power supply management.

[0049] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0050] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0051] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A medical power supply, characterized in that: The medical power supply comprises: A main power supply circuit, the input end of which is connected to an external power supply and is used to provide basic power supply requirements for a plurality of secondary power supply circuits; Each of the secondary power supply circuits is equipped with a corresponding circuit protection module, the input end of each of the circuit protection modules is connected to the output end of the corresponding secondary power supply circuit, and each of the circuit protection modules is used to generate a shutdown protection signal to the main power supply circuit when the output current signal of the corresponding secondary power supply circuit exceeds a preset current range; Each of the secondary power supply circuits is used to provide multiple outputs to adapt to various power supply requirements; A monitoring module, used for detecting the output of the main power circuit and each of the secondary power circuits in real time, and sending the abnormal information to the control module after detecting the abnormal information; The control module is used to process the abnormal information, analyze the processing results based on preset rules, obtain an adjustment strategy, and adjust the main power circuit based on the adjustment strategy, and / or adjust the working state of the secondary power circuit corresponding to the abnormality.

2. The medical power supply according to claim 1, characterized in that: The circuit protection module includes a current sensor, a comparator, a reference voltage source, a MOS tube and a relay; the input end of the current sensor is connected to the output end of the secondary power supply circuit corresponding to it; the non-inverting input end of the comparator is connected to the output end of the current sensor, the inverting input end of the comparator is connected to the reference voltage source, and the output end of the comparator is connected to the gate of the MOS tube; the drain of the MOS tube is connected to the control end of the relay, and the source of the MOS tube is grounded; the contacts of the relay are connected to the main power supply circuit.

3. The medical power supply according to claim 2, characterized in that: Also includes: A plurality of DC / DC converters are provided, and each of the DC / DC converters is respectively arranged between the main power supply circuit and each of the secondary power supply circuits.

4. The medical power supply according to claim 3, characterized in that: It also includes a communication port, through which the medical power supply exchanges data with the monitoring device.

5. A multi-level safety protection method for medical power supply, characterized in that: Applied to the medical power supply according to any one of claims 1 to 4, the method comprises: Processing abnormal information of the main power circuit and / or several of the secondary power circuits; Analyze the processing results based on preset rules to obtain adjustment strategies; The main power supply circuit and / or the working state of the secondary power supply circuit corresponding to the abnormality are adjusted based on the adjustment strategy.

6. The multi-level safety protection method for medical power supply according to claim 5, characterized in that: The processing of abnormal information of the main power circuit and / or several secondary power circuits includes: Each of the abnormal information is divided into a corresponding abnormal information set, and the level corresponding to each of the abnormal information is matched in the corresponding abnormal information set.

7. The multi-level safety protection method for medical power supply according to claim 6, characterized in that: The processing result is analyzed based on preset rules to obtain an adjustment strategy, including: Matching the level corresponding to each of the abnormal information with the membership in the preset rule base to obtain the membership corresponding to each of the input variables; An adjustment strategy for the power supply mode is matched according to the membership degree.

8. The multi-level safety protection method for medical power supply as claimed in claim 7, characterized in that: The preset rule base includes a mapping relationship between the level corresponding to the abnormal information and the membership degree.

9. The multi-level safety protection method for medical power supply according to claim 5, characterized in that: The abnormal information includes overload abnormality, temperature deviation abnormality, and / or power supply delay abnormality.

10. The multi-level safety protection method for medical power supply according to any one of claims 6 to 8, characterized in that: The level of the abnormal information includes: a current overload level, a temperature deviation level, and / or a power supply delay level.

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