A charging control system for a vagus nerve electrical stimulator

Abstract

The present invention relates to the technical field of charging control, and discloses a charging control system for a vagus nerve electrical stimulator, comprising: a monitoring and recording unit, a data processing unit, a charging analysis unit, a charging control unit, a state analysis unit and an information display unit; the present invention intelligently determines whether charging is required and the urgency of charging according to the use habits of an in vitro control device and the battery state, and generates a corresponding charging signal, thereby improving the timeliness and safety of charging; by reducing unnecessary charging cycles, a decrease in battery capacity caused by frequent charging is avoided, thereby helping to extend the service life of the battery; through display lights of different colors and flashing states, the battery state and charging signal are intuitively displayed, which is convenient for users to understand and operate; it is possible to analyze whether the use state of the battery is abnormal, and when an abnormality is detected, the user is reminded to replace the battery through the display light, thereby ensuring the normal operation and safety of the device.

Description

Technical Field

[0001] The invention relates to the technical field of charging control, and in particular to a charging control system of a vagus nerve electrical stimulator. Background Art

[0002] The vagus nerve stimulator is an advanced implantable medical device used to treat drug-resistant epilepsy, certain mental illnesses, chronic pain and other diseases. There are external vagus nerve stimulators on the market. These devices are mainly in vitro and stimulate the vagus nerve branches in the ear to achieve the purpose of treating or relieving symptoms. The external vagus nerve stimulator also corresponds to an external control device, which is used to set the stimulation parameters to achieve electrical stimulation therapy for the vagus nerve. The external control device corresponding to the external vagus nerve stimulator usually needs to be charged regularly to ensure its normal operation, so as to ensure that the patient can continue to receive necessary treatment. However, existing external control devices have a series of challenges and shortcomings in charging management:

[0003] External control devices must ensure charging efficiency and safety when charging. Traditional charging methods may not be able to effectively control the charging rate and monitor the battery status. Overcharging or undercharging may affect the performance of the device and even increase safety risks. The battery health of external control devices directly affects the service life of the device. Inappropriate charging methods and lack of effective battery monitoring may cause the battery capacity to drop rapidly. Existing systems generally lack intelligent charging management, such as automatically adjusting charging strategies or optimizing charging cycles based on device usage patterns, which limits the improvement of device operating efficiency and user experience.

[0004] Therefore, developing a charging control system for in vitro control devices that can improve charging efficiency, ensure safe use, extend battery life, optimize user interaction, and enhance intelligent management has become a technical problem that urgently needs to be solved in the market. Summary of the invention

[0005] The purpose of the present invention is to provide a charging control system for a vagus nerve electrical stimulator, which can enhance the user experience of an external control device, is of great significance to improving the quality of life of patients, and solves the technical problems raised in the background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A charging control system for a vagus nerve stimulator, comprising: charging a replaceable battery in a control device corresponding to an external vagus nerve stimulator through a wireless charger, the system comprising:

[0008] A monitoring and recording unit, used to monitor and record the remaining battery power and the access status of the in vitro control device through the wireless charger, wherein the access status includes the access time and the access power of the in vitro control device each time it is disconnected from the wireless charger;

[0009] A data processing unit, used to perform parameter calculation processing on the access status, and obtain the energy consumption standard rate and access time interval of the in vitro control device;

[0010] A charging analysis unit, used to perform charging judgment analysis based on the access time interval, energy consumption standard rate and remaining battery power of the external control device, and generate a corresponding automatic charging signal and a charging reminder signal based on the judgment and analysis results;

[0011] The charging control unit is used to trigger the automatic charging function in the wireless charger to start according to the automatic charging signal, and at the same time, trigger the selected charging function in the wireless charger to start according to the control charging signal.

[0012] As a further solution of the present invention: the parameter calculation processing method is as follows:

[0013] Step 1: Data extraction and processing

[0014] Extract the number of times the external control device is disconnected from the wireless charger within a specified period;

[0015] Obtain the corresponding usage time and power consumption each time the external control device is disconnected from the wireless charger;

[0016] The energy consumption rate of each use of the in vitro control device is calculated by energy consumption rate = power consumption / usage time;

[0017] The energy consumption rate refers to the amount of electricity consumed by the extracorporeal control device per unit time;

[0018] Step 2: Data Marker Selection

[0019] The energy consumption rate of each use of the external control device is marked as Hi, and the access time of each use of the external control device is marked as Si, i=1, 2, ... n, n represents the number of times the external control device is used in a specified period:

[0020] Step 3: Calculation of Discreteness

[0021] Using the variance calculation formula, calculate the deviation value P of the energy consumption rate of each use of the in vitro control device and the deviation value P1 of the use time of each use of the in vitro control device;

[0022] Step 4: Data control optimization

[0023] Compare the deviation value P with the preset deviation threshold P0:

[0024] If P>P0, it means that the deviation value of the energy consumption rate of each use of the external control device is too large, and then the corresponding Hi values ​​are deleted in order from large to small according to |Hi-Hp| and the remaining deviation value P is calculated accordingly until P≤P0;

[0025] Hp represents the average value of all Hi used in calculating the corresponding deviation value;

[0026] When P≤P0 is obtained, the Hi of the corresponding P is calculated, and the average value of all corresponding Hi is obtained, and then its value is marked as the energy consumption standard rate;

[0027] At the same time, the deviation value P1 is compared with the preset deviation threshold P1y:

[0028] When P1≤P1y, select the group with the largest and smallest values ​​from all Si and mark them as Smax and Smin respectively;

[0029] Then Smax and Smin are combined to form the access time interval [Smin, Smax] of the external control device;

[0030] When P1>P1y, it means that the use time of the in vitro control device is too long. Then, the corresponding Si values ​​are eliminated in descending order of |Si-Sp| and the remaining deviation value P1 is calculated accordingly until P1≤P1y;

[0031] Then, among the Si that have not been eliminated, select the group with the largest and smallest values ​​and mark them as Smax and Smin respectively;

[0032] Smax and Smin are then combined to form the usage time interval [Smin, Smax] of the extracorporeal control device.

[0033] As a further solution of the present invention: the charging analysis method is as follows:

[0034] In the time interval [Smin, Smax], select Smax;

[0035] Then, the standard rate of energy consumption is multiplied by Smax to calculate the minimum estimated power consumption of the extracorporeal control device;

[0036] Then compare the minimum estimated power usage with the remaining battery power:

[0037] If the minimum estimated power consumption is less than or equal to the remaining battery power, an automatic charging signal is generated;

[0038] If the remaining battery power is less than the minimum estimated power consumption ≤ β*the remaining battery power, a control charging signal is generated;

[0039] If the minimum estimated power consumption is greater than β*the remaining battery power, no automatic charging signal or charging reminder signal will be generated;

[0040] Wherein β is a preset value, and the value of β is greater than 1.

[0041] As a further solution of the present invention: also include:

[0042] A state analysis unit, used to perform state analysis according to a plurality of specified cycles of energy consumption standard rates within a commissioning cycle, and analyze whether a battery in the external control device generates a battery abnormality signal, wherein the commissioning cycle refers to a time period between the commissioning time node and the current time node of the external control device;

[0043] The information display unit is used to display battery abnormality signals and control charging signals through different colors and flashing states of the display lights preset on the wireless charger.

[0044] As a further solution of the present invention: the state analysis method is as follows:

[0045] SD1. According to the time trend, calculate the difference between the energy consumption standard rates of each adjacent specified period, and mark the corresponding difference of each adjacent specified period as the rate attenuation difference Lj, ​​j=1, 2, ...m:

[0046] SD2, calculating the deviation value P2 of the rate attenuation difference by the method of S4-S5 in the parameter calculation process, and P2≤P20, where P20 is a preset value;

[0047] When P2≤P20 is obtained, the Lj corresponding to P2 is calculated, and the average value of all corresponding Lj is obtained, and then its value is marked as the attenuation standard value;

[0048] SD3, obtaining the energy consumption standard rate within the current preset period according to the first processing unit;

[0049] Then, the difference between the energy consumption standard rate in the current preset cycle and the energy consumption standard rate in the adjacent previous cycle is calculated and marked as the attenuation contrast difference;

[0050] The current preset period is a preset time period, which may represent a current time period, and the time difference of the current preset period is less than the time difference of the specified period;

[0051] SD4. Compare the attenuation contrast difference with the attenuation standard value, the energy consumption standard rate in the current preset period and the preset energy consumption rate threshold:

[0052] When any one of the following is true: the attenuation contrast difference ≥ the attenuation standard value, and the energy consumption standard rate in the current preset period ≥ the preset energy consumption rate threshold, it indicates that the battery usage status in the external control device is abnormal, and a battery abnormality signal is generated;

[0053] On the contrary, it means that the battery in the external control device can continue to be used and no battery abnormality signal is generated.

[0054] As a further solution of the present invention: when a battery abnormality signal is displayed through a preset display light on the wireless charger, the battery in the extracorporeal control device needs to be replaced immediately.

[0055] As a further solution of the present invention: wherein, when the extracorporeal control device is in use, it is directly taken from the wireless charger, and when it is not in use, the extracorporeal control device is immediately returned to the wireless charger.

[0056] As a further solution of the present invention: the taking time refers to the time when the external control device is separated from the wireless charger and taken away for use by relevant personnel;

[0057] The power consumption refers to the power consumed by the extracorporeal control device during the usage time. The power consumption is obtained by subtracting the battery power recorded when the extracorporeal control device leaves the wireless charger from the battery power recorded when the extracorporeal control device is put back into the wireless charger.

[0058] As a further solution of the present invention: wherein, the display light is displayed in red color and is always on, indicating that a battery abnormality signal is generated;

[0059] If the indicator light is red and flashing, it means the battery is charging and the power level has not reached the minimum estimated power consumption;

[0060] The display light is yellow and always on, indicating that the control charging signal is generated;

[0061] If the indicator light is yellow and flashing, it means the battery is charging and the power has reached the minimum estimated power consumption;

[0062] If the indicator light turns green and stays on, it means the battery is fully charged.

[0063] Beneficial effects of the present invention:

[0064] Automatically monitor and record battery status: Through the monitoring and recording unit of the wireless charger, the remaining battery power and usage of the in vitro control device can be monitored in real time, providing accurate data support for subsequent charging decisions.

[0065] Accurate charging control: The data processing unit calculates the parameters of the access status to obtain the standard energy consumption rate and access time interval, making the charging control more accurate and avoiding the problem of overcharging or undercharging.

[0066] Intelligent charging analysis and decision-making: The charging analysis unit intelligently determines whether charging is needed and the urgency of charging based on the usage habits and battery status of the external control device, and generates corresponding charging signals, thereby improving the timeliness and safety of charging.

[0067] Extend battery life: By reducing unnecessary charging cycles, the battery capacity decrease caused by frequent charging is avoided, which helps to extend the service life of the battery.

[0068] User-friendly interactive design: The information display unit intuitively displays the battery status and charging signal through display lights of different colors and flashing states, making it easy for users to understand and operate.

[0069] Abnormal status detection and reminder: The status analysis unit can analyze whether the battery usage status is abnormal, and remind the user to replace the battery through the display light when an abnormality is detected, ensuring the normal operation and safe use of the equipment.

[0070] Improved ease of use: The in vitro control device can be directly taken from the wireless charger without worrying about power issues, which improves the user's convenience.

[0071] In summary, the present invention realizes intelligent charging management of the external control device of the vagus nerve stimulator through wireless charging technology, which not only improves the charging efficiency and ease of use, but also helps to extend the battery life and ensure the stable operation of the equipment and the safe use of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] The present invention will be further described below in conjunction with the accompanying drawings.

[0073] Figure 1 The present invention discloses a system block diagram of a charging control system for a vagus nerve electrical stimulator.

[0074] Figure 2 The present invention is a schematic diagram of a flow chart of a data processing unit in a charging control system of a vagus nerve electrical stimulator. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0076] See also Figure 1 and Figure 2 As shown, the present invention is a charging control system for a vagus nerve electrical stimulator, which realizes charging control of an external control device corresponding to the vagus nerve electrical stimulator based on wireless charging technology, and specifically charges a replaceable battery in the external control device through a wireless charger;

[0077] The system includes:

[0078] A monitoring and recording unit, used for monitoring and recording the remaining battery power of an in vitro control device through a wireless charger;

[0079] It is also used to monitor and record the access status of the in vitro control device through the wireless charger;

[0080] The access status includes the access time and power consumption of the external control device each time it is disconnected from the wireless charger;

[0081] The access time refers to the time when the external control device is separated from the wireless charger and taken away for use by relevant personnel;

[0082] The power consumption refers to the power consumed by the external control device during the use time, which is calculated by subtracting the battery power recorded when the external control device leaves the wireless charger from the battery power recorded when the external control device is put back into the wireless charger;

[0083] In this embodiment, the external control device is directly taken from the wireless charger when in use, and is immediately returned to the wireless charger when not in use;

[0084] This embodiment can monitor the remaining battery power and usage of the external control device in real time through the monitoring and recording unit of the wireless charger, providing accurate data support for subsequent charging decisions;

[0085] A data processing unit, used to perform parameter calculation processing on the access status, and obtain the energy consumption standard rate and access time interval of the in vitro control device;

[0086] In this embodiment, the data processing unit includes a first processing unit and a second processing unit;

[0087] In this embodiment, the first processing unit and the second processing unit perform parameter calculation processing on the access state to obtain the energy consumption standard rate and the access standard time, thereby making the charging control more accurate and avoiding the problem of overcharging or undercharging;

[0088] The first processing unit is used to perform parameter calculation processing on the access state and obtain the energy consumption standard rate of the extracorporeal control device;

[0089] The parameter calculation is handled as follows:

[0090] S11. extracting the number of times the external control device is disconnected from the wireless charger within a specified period;

[0091] S12, obtaining the corresponding access time and power consumption each time the external control device is disconnected from the wireless charger;

[0092] S13, calculating the energy consumption rate of each use of the in vitro control device by energy consumption rate = power consumption / usage time;

[0093] The energy consumption rate refers to the amount of electricity consumed by the extracorporeal control device per unit time;

[0094] S14. The energy consumption rate of each use of the extracorporeal control device is marked as Hi, i=1, 2, ... n, and n represents the number of times the extracorporeal control device is used within a specified period:

[0095] S15, using a variance calculation formula, calculating a deviation value P of the energy consumption rate of each use of the in vitro control device;

[0096] S16, comparing the deviation value P with a preset deviation threshold value P0:

[0097] If P>P0, it means that the deviation value of the energy consumption rate of each use of the external control device is too large, and then the corresponding Hi values ​​are deleted in order from large to small according to |Hi-Hp| and the remaining deviation value P is calculated accordingly until P≤P0;

[0098] Hp represents the average value of all Hi used in calculating the corresponding deviation value;

[0099] S17, when P≤P0 is obtained, the Hi of the corresponding P is calculated, and the average value of all corresponding Hi is obtained, and then the value is marked as the energy consumption standard rate;

[0100] The second processing unit is used to perform parameter calculation processing on the access state and obtain the access time interval of the in vitro control device;

[0101] The parameter calculation is handled as follows:

[0102] S21. Obtaining the corresponding access time each time the external control device is disconnected from the wireless charger within a specified period;

[0103] S22. Mark each time of using the extracorporeal control device as Si, where i=1, 2, ... n, and n represents the number of times the extracorporeal control device is used within a specified period:

[0104] S23, using a variance calculation formula, calculating a deviation value P1 of the use time of each use of the in vitro control device;

[0105] S24, comparing the deviation value P1 with a preset deviation threshold value P1y:

[0106] When P1≤P1y, select the group with the largest and smallest values ​​from all Si and mark them as Smax and Smin respectively;

[0107] Then Smax and Smin are combined to form the access time interval [Smin, Smax] of the external control device;

[0108] When P1>P1y, it means that the use time of the in vitro control device is too long. Then, the corresponding Si values ​​are eliminated in descending order of |Si-Sp| and the remaining deviation value P1 is calculated accordingly until P1≤P1y;

[0109] Then, among the Si that have not been eliminated, select the group with the largest and smallest values ​​and mark them as Smax and Smin respectively;

[0110] Smax and Smin are then combined to form the usage time interval [Smin, Smax] of the extracorporeal control device.

[0111] A charging analysis unit, used to perform charging judgment analysis based on the use time interval, energy consumption standard rate and battery remaining power of the external control device;

[0112] In this embodiment, the charging analysis unit intelligently determines whether charging is needed and the urgency of charging according to the usage habits and battery status of the external control device, and generates a corresponding charging signal, thereby improving the timeliness and safety of charging;

[0113] The charging analysis method is as follows:

[0114] In the time interval [Smin, Smax], select Smax;

[0115] Then, the standard rate of energy consumption is multiplied by Smax to calculate the minimum estimated power consumption of the extracorporeal control device;

[0116] Then compare the minimum estimated power usage with the remaining battery power:

[0117] If the minimum estimated power consumption is less than or equal to the remaining battery power, an automatic charging signal is generated;

[0118] If the remaining battery power is less than the minimum estimated power consumption ≤ β*the remaining battery power, a control charging signal is generated;

[0119] If the minimum estimated power consumption is greater than β*the remaining battery power, no automatic charging signal or charging reminder signal will be generated;

[0120] Where β is a preset value, and the value of β is greater than 1;

[0121] A charging control unit, used to trigger the automatic charging function in the wireless charger to start according to the automatic charging signal, and to trigger the selected charging function in the wireless charger to start according to the control charging signal;

[0122] This embodiment analyzes the automatic charging signal to avoid irreversible consequences caused by insufficient power and the person concerned forgetting to charge. It also analyzes the control charging signal to reduce the battery charging cycle, thereby avoiding a slight decrease in battery capacity and a reduction in battery life.

[0123] The wireless charger includes charging mode and monitoring mode;

[0124] The charging mode includes an automatic charging function and a selected charging function, and the charging mode indicates that the external control device is being charged, and at the same time, the data of the external control device is obtained through the monitoring and recording unit;

[0125] Monitoring mode means that the data of the external control device is being obtained through the monitoring and recording unit, and the external control device is not being charged;

[0126] In this embodiment, the automatic charging function is represented by the remaining power of the battery of the external control device being too low, and when the external control device is put back into the wireless charger, the wireless charger autonomously charges the external control device;

[0127] The selected charging function indicates that the remaining power of the battery of the external control device is low and has not reached the standard for automatic charging. When the control charging signal is generated, the preset display light on the wireless charger lights up, and the relevant personnel can choose whether to continue charging through the preset button on the wireless charger;

[0128] Among them, when the minimum estimated power consumption is greater than β*the remaining battery power, and no automatic charging signal and charging reminder signal are generated, it means that the external control device does not need to be charged and the wireless charger will not charge the external control device autonomously, and the preset display light on the wireless charger will not light up, but the relevant personnel can choose whether to continue charging through the preset button on the wireless charger;

[0129] When the power of the external control device is fully charged in the charging mode, the charging stops and the device enters the monitoring mode. Embodiment 2

[0130] As the second embodiment of the present invention, when the present application is implemented, compared with the first embodiment, the technical solution of the present embodiment is different from that of the first embodiment only in that the present embodiment further includes:

[0131] A state analysis unit, used to perform state analysis according to a plurality of standard energy consumption rates of specified periods within the use cycle, and to analyze whether the use state of the battery in the in vitro control device is abnormal;

[0132] The commissioning period refers to the time period from the commissioning time node to the current time node of the in vitro control device;

[0133] The specific method is as follows:

[0134] SD1. According to the time trend, calculate the difference between the energy consumption standard rates of each adjacent specified period, and mark the corresponding difference of each adjacent specified period as the rate attenuation difference Lj, ​​j=1, 2, ...m:

[0135] SD2, using the variance calculation formula, calculate the deviation value P2 of all rate attenuation differences Lj;

[0136] SD3, compare the deviation value P2 with the preset deviation threshold value P20:

[0137] If P2>P20, it means that the deviation values ​​of all rate attenuation differences are too large. Then, the corresponding Lj values ​​are deleted in the order of |Lj-Lp| from large to small, and the remaining deviation value P2 is calculated accordingly until P2≤P20;

[0138] Lp represents the average value of all Lj used in calculating the corresponding deviation value;

[0139] SD4, when P2≤P20 is obtained, participate in the calculation of Lj corresponding to P2, and find the average value of all corresponding Lj, and then mark its value as the attenuation standard value;

[0140] SD5. Obtaining a standard energy consumption rate within a current preset period according to the first processing unit;

[0141] Then, the difference between the energy consumption standard rate in the current preset cycle and the energy consumption standard rate in the adjacent previous cycle is calculated and marked as the attenuation contrast difference;

[0142] The current preset period is a preset time period, which may represent a current time period, and the time difference of the current preset period is less than the time difference of the specified period;

[0143] SD6. Compare the attenuation contrast difference with the attenuation standard value, the energy consumption standard rate in the current preset period and the preset energy consumption rate threshold:

[0144] When any one of the following is true: the attenuation contrast difference ≥ the attenuation standard value, and the energy consumption standard rate in the current preset period ≥ the preset energy consumption rate threshold, it indicates that the battery usage status in the external control device is abnormal, and a battery abnormality signal is generated;

[0145] When a battery abnormality signal is displayed by a preset display light on the wireless charger, the battery in the external control device needs to be replaced immediately;

[0146] Otherwise, it means that the battery in the external control device can continue to be used and no battery abnormality signal is generated;

[0147] This embodiment adds a status analysis unit on the basis of the first embodiment. The status analysis unit can analyze whether the battery usage status is abnormal, and remind the user to replace the battery through the display light when an abnormality is detected, thereby ensuring the normal operation and safe use of the device; through the attenuation analysis of the standard energy consumption rate, the problem of battery performance degradation can be discovered earlier, and more timely maintenance suggestions can be provided to the user;

[0148] An information display unit, used to display battery abnormality signals, control charging signals and charging status through different colors and flashing states of display lights preset on the wireless charger;

[0149] In this implementation: the display light is red and is always on, indicating that a battery abnormality signal is generated;

[0150] If the indicator light is red and flashing, it means the battery is charging and the power level has not reached the minimum estimated power consumption;

[0151] The display light is yellow and always on, indicating that the control charging signal is generated;

[0152] If the indicator light is yellow and flashing, it means the battery is charging and the power has reached the minimum estimated power consumption;

[0153] When the indicator light turns green and stays on, it means the battery is fully charged and enters the monitoring mode.

[0154] In this embodiment, the information display unit intuitively displays the battery status and charging signal through display lights of different colors and flashing states, which is convenient for users to understand and operate. Embodiment 3

[0155] As the third embodiment of the present invention, when the present application is specifically implemented, compared with the first and second embodiments, the technical solution of this embodiment is to combine the solutions of the first and second embodiments mentioned above for implementation.

[0156] This embodiment combines the technical solutions of Embodiment 1 and Embodiment 2 to achieve multiple functional effects such as automatic monitoring, precise charging control, intelligent charging analysis, extended battery life, user-friendly interaction, abnormal state detection and reminder, etc.

[0157] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters and thresholds in the formula are set by technicians in this field according to actual conditions.

[0158] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A charging control system for a vagus nerve electrical stimulator, characterized in that: Including, charging a replaceable battery in a control device corresponding to an external vagus nerve electrical stimulator through a wireless charger, the system comprising: A monitoring and recording unit, used to monitor and record the remaining battery power and the access status of the in vitro control device through the wireless charger, wherein the access status includes the access time and the access power of the in vitro control device each time it is disconnected from the wireless charger; A data processing unit, comprising a first processing unit and a second processing unit, for performing parameter calculation processing on the access state to obtain a standard energy consumption rate and an access time interval of the in vitro control device; The parameter calculation is handled as follows: S1. Extract the number of times the external control device is disconnected from the wireless charger within a specified period; obtain the corresponding access time and power consumption each time the external control device is disconnected from the wireless charger; S2. Calculate the energy consumption rate of each use of the in vitro control device by energy consumption rate = power consumption / usage time; The energy consumption rate refers to the amount of electricity consumed by the extracorporeal control device per unit time; S3. The energy consumption rate of each use of the extracorporeal control device is marked as Hi, and the access time of each use of the extracorporeal control device is marked as Si, i=1, 2, ... n, and n represents the number of times the extracorporeal control device is used within a specified period: S4, using the variance calculation formula, calculating the deviation value P of the energy consumption rate of each use of the in vitro control device, and the deviation value P1 of the use time of each use of the in vitro control device; S5. Compare the deviation value P with the preset deviation threshold value P0: If P>P0, it means that the deviation value of the energy consumption rate of each use of the external control device is too large, and then the corresponding Hi values ​​are deleted in order from large to small according to |Hi-Hp| and the remaining deviation value P is calculated accordingly until P≤P0; Hp represents the average value of all Hi used in calculating the corresponding deviation value; When P≤P0 is obtained, the Hi of the corresponding P is calculated, and the average value of all corresponding Hi is obtained, and then its value is marked as the energy consumption standard rate; At the same time, the deviation value P1 is compared with the preset deviation threshold P1y: When P1≤P1y, select the group with the largest and smallest values ​​from all Si and mark them as Smax and Smin respectively; Then Smax and Smin are combined to form the access time interval [Smin, Smax] of the extracorporeal control device; When P1>P1y, it means that the use time of the in vitro control device is too long. Then, the corresponding Si values ​​are eliminated in descending order of |Si-Sp| and the remaining deviation value P1 is calculated accordingly until P1≤P1y; Then, among the Si that have not been eliminated, select the group with the largest and smallest values ​​and mark them as Smax and Smin respectively; Then Smax and Smin are combined to form the access time interval [Smin, Smax] of the extracorporeal control device; A charging analysis unit, used to perform charging judgment analysis based on the access time interval, energy consumption standard rate and remaining battery power of the external control device, and generate a corresponding automatic charging signal and a charging reminder signal based on the judgment and analysis results; The charging judgment and analysis method is as follows: In the time interval [Smin, Smax], select Smax; Then, the standard rate of energy consumption is multiplied by Smax to calculate the minimum estimated power consumption of the extracorporeal control device; Then compare the minimum estimated power usage with the remaining battery power: If the minimum estimated power consumption is less than or equal to the remaining battery power, an automatic charging signal is generated; If the remaining battery power is less than the minimum estimated power consumption ≤ β*the remaining battery power, a control charging signal is generated; If the minimum estimated power consumption > β* remaining battery power, no automatic charging signal or charging reminder signal will be generated; Where β is a preset value, and the value of β is greater than 1; The charging control unit is used to trigger the automatic charging function in the wireless charger to start according to the automatic charging signal, and at the same time trigger the selected charging function in the wireless charger to start according to the control charging signal.

2. A charging control system for a vagus nerve electrical stimulator according to claim 1, characterized in that: Also includes: A state analysis unit, used to perform state analysis according to a plurality of specified cycles of energy consumption standard rates within a commissioning cycle, and analyze whether a battery in the external control device generates a battery abnormality signal, wherein the commissioning cycle refers to a time period between the commissioning time node and the current time node of the external control device; The information display unit is used to display battery abnormality signals and control charging signals through different colors and flashing states of the display lights preset on the wireless charger.

3. A charging control system for a vagus nerve electrical stimulator according to claim 2, characterized in that: The status analysis method is as follows: SD1. According to the time trend, calculate the difference between the energy consumption standard rates of each adjacent specified period, and mark the corresponding difference of each adjacent specified period as the rate attenuation difference Lj, ​​j=1, 2, ...m: SD2, calculating the deviation value P2 of the rate attenuation difference by the method of S4-S5 in the parameter calculation process, and P2≤P20, where P20 is a preset value; When P2≤P20 is obtained, the Lj corresponding to P2 is calculated, and the average value of all corresponding Lj is obtained, and then its value is marked as the attenuation standard value; SD3, obtaining the energy consumption standard rate within the current preset period according to the first processing unit; Then, the difference between the energy consumption standard rate in the current preset cycle and the energy consumption standard rate in the adjacent previous cycle is calculated and marked as the attenuation contrast difference; The current preset period is a preset time period, which may represent a current time period, and the time difference of the current preset period is less than the time difference of the specified period; SD4. Compare the attenuation contrast difference with the attenuation standard value, the energy consumption standard rate in the current preset period and the preset energy consumption rate threshold: When any one of the following is true: the attenuation contrast difference ≥ the attenuation standard value, and the energy consumption standard rate in the current preset period ≥ the preset energy consumption rate threshold, it indicates that the battery usage status in the external control device is abnormal, and a battery abnormality signal is generated; On the contrary, it means that the battery in the external control device can continue to be used and no battery abnormality signal is generated.

4. A charging control system for a vagus nerve electrical stimulator according to claim 1, characterized in that: in, When the external control device is in use, it is directly taken from the wireless charger. When it is not in use, the external control device is immediately returned to the wireless charger.

5. The charging control system of the vagus nerve electrical stimulator according to claim 1, characterized in that: The access time refers to the time when the external control device is separated from the wireless charger and taken away for use by relevant personnel; The power consumption refers to the power consumed by the extracorporeal control device during the usage time. The power consumption is obtained by subtracting the battery power recorded when the extracorporeal control device leaves the wireless charger from the battery power recorded when the extracorporeal control device is put back into the wireless charger.

6. A charging control system for a vagus nerve electrical stimulator according to claim 3, characterized in that: in, When a battery abnormality signal is displayed through a preset indicator light on the wireless charger, the battery in the external control device needs to be replaced immediately.

7. A charging control system for a vagus nerve electrical stimulator according to claim 6, characterized in that: in, If the indicator light is red and always on, it means that the battery abnormality signal is generated; If the indicator light is red and flashing, it means the battery is charging and the power level has not reached the minimum estimated power consumption; The display light is yellow and always on, indicating that the control charging signal is generated; If the indicator light is yellow and flashing, it means the battery is charging and the power has reached the minimum estimated power consumption; If the indicator light turns green and stays on, it means the battery is fully charged.

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