CN107468240B - Handheld electrocardiograph monitoring system - Google Patents
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Abstract
The invention provides a handheld electrocardiograph monitoring system, which comprises: the device comprises a handheld electrode, a miniature electrocardiograph host, an intelligent terminal and a big data system. The handheld electrocardiograph monitoring system provided by the invention is multifunctional and convenient to carry, can analyze, manage and alarm the acquired electrocardiograph data while acquiring and monitoring the electrocardiograph, is beneficial to grasping the comprehensive condition of a patient, and fully meets the actual use requirements of users.
Description
Technical Field
The invention relates to the technical field of medical monitoring, in particular to a handheld electrocardiograph monitoring system.
Background
With changes in people's lifestyle, dietary structure, chronic diseases, mainly cardiovascular diseases, are increasingly becoming the first killer of human health and spreading from cities to rural areas at a striking rate. It has been counted that in 2016, there are more than 3 million patients with cardiovascular disease in China, and more than 5 million people in high risk group, millions of people die from cardiovascular disease directly or indirectly each year. Cardiovascular diseases have the characteristics of long development period, unobvious early symptoms, urgent and serious morbidity, and death or serious disability are often caused if the optimal treatment opportunity is missed after the morbidity. In the past, due to lack of enough medical resources and technical means, chronic disease management and prevention cannot be effectively performed in the disease development period.
At present, domestic diagnosis and treatment forces of cardiovascular diseases are concentrated on operation and drug treatment, but prevention and treatment means are weak, and the dilemma that medical resources are more and more intense and patients are more and more cured is formed. In recent years, with advances in clinical medicine and public health, the medical community has realized that reducing the incidence of cardiovascular disease is important in screening for prevention and chronic disease management, and that medical resources are being drastically adjusted from post-treatment to pre-prevention by medical reform.
Electrocardiography has an irreplaceable clinical value for early screening and chronic management of cardiovascular disease. However, the conventional electrocardiogram and Holter dynamic electrocardiograph commonly used at present have the defects of short monitoring time, uncomfortable wearing, large signal interference, lack of auxiliary software and the like, and cannot meet the requirements of modern chronic disease management. Therefore, a dynamic electrocardiograph system capable of continuously performing electrocardiographic monitoring for a long time is developed, and the dynamic electrocardiograph is used for recording heart activities, so that valuable diagnostic data is provided for clinical diagnosis and treatment, and the system has very important significance for early discovery of heart diseases and evaluation of heart functions.
At present, some novel miniaturized single-lead electrocardiograph monitoring devices are in markets at home and abroad, and have the characteristics of small volume and convenient use, but the devices have some defects, so that the practicability is insufficient. Such as: (1) The wireless transmission function is lacking, so that heartbeats cannot be transmitted and checked in real time; (2) The monitoring time is only 24 hours, so that the electrocardiogram is difficult to monitor continuously for a long time; (3) Only temporary measurement can be carried out, and the electrocardiogram can not be continuously monitored and recorded for a long time, so that asymptomatic electrocardiographic abnormality is difficult to capture.
Therefore, the current novel electrocardiograph still has difficulty in meeting the increasingly high requirements of electrocardiographic monitoring and chronic disease management. Aiming at the situation, the inventor of the invention designs a brand new technical scheme, which can solve the problems of the equipment and realize an innovative handheld electrocardiograph monitoring system.
Disclosure of Invention
The invention aims to provide a handheld electrocardiograph monitoring system so as to overcome the defects in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
A handheld electrocardiographic monitoring system, comprising: the system comprises a handheld electrode, a miniature electrocardiograph host, an intelligent terminal and a big data system;
The handheld electrode is connected with the miniature electrocardiograph host machine, the handheld electrode is provided with two electrode ends for being held by hands, the electrode ends are connected with the miniature electrocardiograph host machine, the miniature electrocardiograph host machine comprises a filtering unit, an analog front end, a memory and a processing transmission module, the processing transmission module comprises a lossless compression processing unit and a wireless transmission unit, an electric signal transmitted by the electrode ends is processed by the filtering unit, the analog front end and the lossless compression processing unit and then is transmitted by the wireless transmission unit, the intelligent terminal receives data transmitted by the processing transmission module, the intelligent terminal comprises a graphical display module, a consultation module, a history wearing data module and a setting module, a large data system is in remote data transmission with the intelligent terminal, and the large data system comprises an analysis alarm module.
As an improvement of the handheld electrocardiograph monitoring system, the handheld electrode is connected with the miniature electrocardiograph host through an electrode buckle or a connector, and the handheld electrode and the miniature electrocardiograph host are integrated on a handheld device such as a mobile phone shell, a business card holder, a radio or a tablet personal computer.
As an improvement of the handheld electrocardiographic monitoring system of the present invention, the filtering unit includes: the electrostatic resistor, the T-shaped filter unit, the pi-shaped filter unit and the zener breakdown protection circuit are connected in parallel.
As an improvement of the handheld electrocardiograph monitoring system, the T-type filtering unit comprises a first resistor and a first capacitor, the pi-type filtering unit comprises the first capacitor, a second resistor and a second capacitor, the first end of the first resistor is connected with the handheld electrode, the second end of the first resistor is connected with the first end of the first capacitor and the first end of the second resistor, the second end of the second resistor is connected with the first end of the second capacitor and the input end of the a/D conversion module, and the second end of the first capacitor and the second end of the second capacitor are grounded.
As an improvement of the handheld electrocardiograph monitoring system, the miniature electrocardiograph host also comprises a fall-preventing module, and the fall-preventing module comprises an accelerometer, a gyroscope and a geomagnetic sensor.
As an improvement of the handheld electrocardiograph monitoring system, the miniature electrocardiograph host also comprises a thermometer, a respiration rate sensor and a skin electricity detection sensor.
As an improvement of the handheld electrocardiograph monitoring system, the miniature electrocardiograph host is further provided with a charging seat, and the charging seat charges the miniature electrocardiograph host in a pogpin or wireless mode.
As an improvement of the handheld electrocardiograph monitoring system, the graphical display module comprises a user registration login module which enables a one-to-one binding relation between a user and electrocardiograph peripherals, and electrocardiograph real-time data waveform diagram display is carried out after login.
As an improvement of the handheld electrocardiographic monitoring system, a doctor list, doctor details, a user order list and a dialogue list are preset in the inquiry module;
The doctor list comprises a doctor list and related brief introduction of online consultation; the doctor details comprise personal detailed description information of a doctor, user evaluation and historical order user evaluation; the user order list records the consultation order submitted by the user and each state information from the submission to the consultation completion; the dialogue list can be communicated with the doctor of the inquiry one by one in a timely manner.
As an improvement of the handheld electrocardiograph monitoring system, the history wearing data module comprises a history wearing data list and a reporting calendar; the report calendar is provided with an analysis report of the date of wearing the data record; the history wearing data list comprises the wearing data which is being downloaded and has been downloaded, and the wearing data is divided according to single wearing; and after the wearing data is downloaded, the uploading server analyzes the wearing data, and a complete analysis report is generated on the analyzed data.
As an improvement of the handheld electrocardiographic monitoring system of the present invention, the setting module includes: the user personal information checking and maintaining and the user quits the login operation unit; an operation unit for binding, unbinding, clearing data and upgrading firmware of the electrocardiograph peripheral; customer service, opinion feedback, information management unit of application version.
As an improvement of the handheld electrocardiograph monitoring system, the intelligent terminal is a handheld intelligent device such as a smart phone or a tablet personal computer.
As an improvement of the handheld electrocardiograph monitoring system, the number of the intelligent terminals is several, and the intelligent terminals are carried by different guardians.
As an improvement of the handheld electrocardiograph monitoring system of the present invention, the analysis alarm module includes: the system comprises a data receiving module, an analyzing module and an early warning information sending module.
Compared with the prior art, the invention has the beneficial effects that: the handheld electrocardiograph monitoring system provided by the invention is multifunctional and convenient to carry, can analyze, manage and alarm the acquired electrocardiograph data while acquiring and monitoring the electrocardiograph, is beneficial to grasping the comprehensive condition of a patient, and fully meets the actual use requirements of users.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a block diagram of a handheld electrocardiographic monitoring system according to an embodiment of the present invention;
FIG. 2 is a physical diagram of the hand-held electrode combined with the miniature electrocardiograph host;
FIG. 3 is a schematic block diagram of the main body of the miniature electrocardiograph in FIG. 1;
FIG. 4 is a circuit diagram of the filtering unit of FIG. 3;
FIG. 5 is a schematic block diagram of the intelligent terminal in FIG. 1;
fig. 6 is a block diagram of the big data system of fig. 1.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the handheld electrocardiograph monitoring system of the present invention includes: the portable electrocardiograph comprises a handheld electrode 1, a miniature electrocardiograph host 2, an intelligent terminal 3 and a big data system 4.
The hand-held electrode 1 is used for conducting human body electric signals and transmitting the electric signals to the miniature electrocardiograph host 2. Specifically, the hand-held electrode 1 is connected with the miniature electrocardiograph host 2. The hand-held electrode 1 is provided with two electrode terminals for being held by a human hand, and when the human hand is in contact with the electrode terminals, an electric signal of a human body is conducted into the miniature electrocardiograph host 2 through the electrode terminals.
As shown in fig. 2, the micro electrocardiograph host 2 is configured to receive the electrical signal transmitted by the handheld electrode 1, process and send the electrical signal, and continuously monitor and record an electrocardiogram for more than 14 days. In particular, for convenience of carrying, the combined handheld electrode and the micro electrocardiograph host can be integrally arranged on a handheld device such as a mobile phone shell, a business card holder, a radio or a tablet personal computer.
In one embodiment, the hand-held electrode 1 and the micro electrocardiograph host 2 are connected through an electrode buckle or a connector, and when the hand-held electrode 1 and the micro electrocardiograph host are separately arranged, the hand-held electrode and the micro electrocardiograph host can be connected through a wire. The electrode buckle or the connector can be used for transmitting an electric signal conducted by an electrode terminal to the miniature electrocardiograph host 2 while the handheld electrode 1 is connected with the miniature electrocardiograph host 2.
As shown in fig. 3, the micro electrocardiograph host 2 includes a filtering unit 21, an analog front end 22, a memory, and a processing and transmitting module 23, where the processing and transmitting module 23 includes a lossless compression processing unit and a wireless transmitting unit, and the electric signal transmitted by the electrode is processed by the filtering unit 21, the analog front end 22, and the lossless compression processing unit and then is transmitted wirelessly by the wireless transmitting unit. The memory is a large-capacity memory, and continuous storage and acquisition of all electrocardiographic data can be realized by setting the large-capacity memory, so that the signal is ensured not to be missed. Meanwhile, the high-capacity memory can also be used as a buffer memory for real-time data transmission, so that the data integrity is ensured.
As shown in fig. 4, in particular, the filtering unit 21 is disposed between the hand-held electrode 1 and the analog front end 22, which enhances resistance to noise interference, and which cooperates with a plurality of sets of filters to achieve maximum noise immunity under the requirement of ensuring data fidelity. The filter unit 21 includes an electrostatic resistor 210, a T-type filter unit 211, a pi-type filter unit 212, and a zener breakdown protection circuit 213 connected in parallel with each other.
The T-type filter unit 211 includes a first resistor and a first capacitor, the pi-type filter unit 212 includes a first capacitor, a second resistor and a second capacitor, a first end of the first resistor is connected to the handheld electrode, a second end of the first resistor is connected to a first end of the first capacitor and a first end of the second resistor, a second end of the second resistor is connected to a first end of the second capacitor 52 and an input end of the a/D conversion module, and a second end of the first capacitor and a second end of the second capacitor are grounded.
A first end of the electrostatic resistor 210 is connected to a first end of the first resistor, and a second end of the electrostatic resistor 210 is grounded.
The zener breakdown protection circuit 213 includes a first diode and a second diode, the first end of the first diode and the first end of the second diode are respectively connected to the second end of the second resistor, the second end of the first diode is connected to VDD, and the second end of the second diode is grounded. The hand-held electrode is grounded.
The analog front end 22 is configured to receive and process the electrical signal processed by the filtering power supply, and in one embodiment, the analog front end 22 is an ADC chip, preferably, the model of the ADC chip is: ADS1191, ADS1291, ADS1192, ADS1292, ADAS1000-1, ADAS 1010-2.
After the lossless compression processing unit is used for processing, the data volume stored and transmitted can be greatly reduced, so that the energy consumption is greatly reduced, and the data security is improved. Meanwhile, the capacity of the battery is greatly reduced due to the low-power consumption design, so that the occupied space of the battery is reduced, and the design volume is reduced. In addition, the compact circuit design and the structure design are adopted, so that the space utilization rate is further increased, and the purpose of ultra-light and ultra-small is realized. The lossless compression processing unit operates as follows:
a. And setting the data compression packet length N and the calculation depth D according to available memory system resources and the requirement on real-time property. Increasing N and D can achieve higher compression ratios, but can occupy more system computing resources and reduce real-time; setting whether lossy compression is allowed; if lossy compression is allowed, lossy compression parameters are set: an approximation threshold K, an approximation upper limit H;
b. D-order difference operation is carried out on the first N data of the input data stream according to the calculated depth D, so as to obtain a difference value array dev_1, …, dev_N-D-1;
c. sequencing the difference value arrays to obtain arrays a_1, … and a_N from small to large and a maximum value Max, and finding a minimum N value which satisfies the N power of 2 and is smaller than or equal to Max;
d. if lossy compression is allowed, the following determination is added: if there are no more than H segments in the array that are successively less than K, the beginning value position b and the number H of the segment are recorded, and all data of the segment are processed as 0.
E. Setting the unit length of the result bit stream as n, and writing the difference value into the result bit stream in sequence, wherein the length is less than the leading zero padding. If lossy compression is allowed, the data processed at 0 will not be added to the bit stream, but only parameters b and h are recorded.
F. Typical compressed packet data structures are: header data |dev_ … |dev_n
G. after the bit stream is set, 2-byte boundary marks are respectively added at two ends, and the length of the whole compressed data packet is increased after the start of the marks, so that the compressed data packet is isolated in storage, and the integrity of the compressed data packet is verified after transmission.
H. A set of data is additionally provided for recording the setting parameters in step 1. If dynamic adaptation is required, the data should be dynamically adjusted along with the compression process, and the parameter set corresponding to the initial position of the original data is recorded.
I. Decompression: and (3) performing reverse operation of the steps according to the recorded parameter group, namely finding out head data through boundary marks, and then sequentially performing addition operation with the following data. If lossy compression is performed, the value 0 is inserted into the corresponding position according to b and h, and then the above operation is performed.
The wireless transmission unit is used for sending the data processed by the analog front end 22 to the intelligent terminal 3. In addition, the micro electrocardiograph host 2 further comprises a battery, preferably, the battery is a rechargeable battery, and the rechargeable battery is a lithium battery. The miniature electrocardiograph host 2 is also equipped with a charging stand that can charge the lithium battery. The charging mode of the charging seat can be pogpin charging or wireless charging. Therefore, the miniature electrocardiograph host 2 can be charged synchronously in a wearing state, so that the miniature electrocardiograph host 2 can be charged in real time, and real-time acquisition of human electrocardiograph data is realized.
The miniature electrocardiograph host 2 also integrates multiple functions. In one embodiment, the micro electrocardiograph host 2 further comprises a fall prevention module, and the fall prevention module comprises an accelerometer, a gyroscope and a geomagnetic sensor. The accelerometer, the gyroscope and the geomagnetic sensor can be integrated to monitor the movement gesture of the monitored person so as to realize falling alarm. In addition, the micro electrocardiograph host 2 further comprises a thermometer, a respiration rate sensor and a skin electricity detection sensor. The thermometer can monitor the body temperature of a monitored person, and further plays a role in assisting analysis when the big data system 4 analyzes electrocardiograph data, and the respiration rate sensor and the skin electric sensor collect respiration rate data and skin electric data so as to play a role in assisting analysis when the big data system 4 analyzes electrocardiograph data.
As shown in fig. 5, the intelligent terminal 3 is configured to wirelessly receive data sent by the micro electrocardiograph host 2 or the big data system, process the data to form a final electrocardiographic waveform, and present the final electrocardiographic waveform to a user, and generate electrocardiographic interpretation analysis and statistical data. If the high-risk electrocardio abnormality is found, the intelligent terminal sends out an early warning signal to automatically inform the family members and doctors of the user. Specifically, the intelligent terminal 3 receives the data transmitted by the processing and transmitting module 23, and the intelligent terminal 3 includes a graphical display module 31, a consultation module 32, a history wearing data module 33, and a setting module 34.
The graphical display module 31 includes a user registration login module, which enables a one-to-one binding relationship between a user and an electrocardiograph peripheral, and performs electrocardiograph real-time data waveform diagram display after login. Specifically, the electrocardiograph real-time data waveform diagram display after the login of the user registration login module is divided into two display modes of refreshing and translation, and the running speed and the gain of the electrocardiograph real-time data waveform diagram display are customized by the user. Wherein the real-time heart rate display performs QRS detection according to the real-time electrocardiogram waveform, and the filtering modes include notch filtering, median filtering and low-pass filtering. In addition, the user registration login module is associated with a heart-strengthening ring, and the heart-strengthening ring provides information related to heart health for the user and consists of an information flow list and graphic details. The doctor list, doctor details, user order list, and dialogue list are preset in the inquiry module 32. The doctor list comprises a doctor list and related brief introduction of online consultation; the doctor details comprise personal detailed description information of a doctor, user evaluation and historical order user evaluation; the user order list records the consultation order submitted by the user and each state information from the submission to the consultation completion; the dialogue list can be communicated with the doctor of the inquiry one by one in a timely manner.
The history wearing data module 33 includes a history wearing data list and a report calendar; the report calendar is provided with an analysis report of the date of wearing the data record; the history wearing data list comprises the wearing data which is being downloaded and has been downloaded, and the wearing data is divided according to single wearing; and after the wearing data is downloaded, the uploading server analyzes the wearing data, and a complete analysis report is generated on the analyzed data.
The setting module 34 includes: the user personal information checking and maintaining and the user quits the login operation unit; an operation unit for binding, unbinding, clearing data and upgrading firmware of the electrocardiograph peripheral; customer service, opinion feedback, information management unit of application version.
In an embodiment, the smart terminal 3 may be a handheld smart device such as a smart phone or a tablet computer. In addition, when the guardian is a plurality of people, a plurality of intelligent terminals 3 can be arranged, and the plurality of intelligent terminals 3 are respectively carried by different guardianship persons, so that the miniature electrocardiograph host 2 respectively performs real-time data transmission with the plurality of intelligent terminals 3.
As shown in fig. 6, the big data system 4 is used for processing a large amount of data including real-time electrocardiographic data based on a high-flux cloud server at the same time, and analyzing the data through an intelligent algorithm. After the big data background acquires the data uploaded by the electrocardiograph, an intelligent algorithm is called in real time to detect abnormal electrocardiosignals and label and classify the abnormal electrocardiosignals, and meanwhile, the correlation analysis can be carried out on the electrocardiosignals and other physiological data provided by an accelerometer, a gyroscope, a geomagnetic instrument, a temperature sensor, a respiration rate sensor and a skin electricity feedback sensor, so that more comprehensive health assessment is given. After logging in the big data system, the doctor can check physiological data such as electrocardio and the like, modify and confirm automatic analysis, then send an electrocardiogram report and provide diagnosis opinion. In addition, doctors can view big data information of all patients, including gender, age, address, work, past medical history, medication, health care and the like, and comprehensive statistical analysis is performed by using big data tools.
Specifically, the big data system 4 comprises an analysis alarm module. The analysis alarm module comprises: a data receiving module 41, an analyzing module 42 and an early warning information transmitting module 43.
The micro electrocardiograph host 2 periodically sends electrocardiograph data to the intelligent terminal 3 in real time, wherein the sent electrocardiograph data are transmitted to the intelligent terminal 3 in a wireless mode, and the intelligent terminal 3 further uploads the received electrocardiograph data to the data processing module.
The data receiving module 41 receives the electrocardiographic data uploaded by the intelligent terminal 3, and transmits the received electrocardiographic data to the analyzing module 42, the analyzing module 42 stores a data threshold representing normal electrocardiographic signs of the human body, the analyzing module 42 compares the received electrocardiographic data with the stored data threshold, when the received electrocardiographic data is located in the stored data threshold, the electrocardiographic signs of the human body are indicated to be at a normal level, otherwise, the analyzing module 42 notifies the early warning information sending module 43 of early warning. The early warning information sending module 43 is in data communication with the intelligent terminal 3 uploading the electrocardiographic data, and the intelligent terminal 3 can receive the early warning information sent by the early warning information sending module 43. In addition, when there are a plurality of intelligent terminals 3, the early warning information sending module 43 may also send early warning information to other intelligent terminals 3 associated with the intelligent terminal 3 that uploads the electrocardiographic data. In addition, when the monitored person is serious, the early warning information sending module 43 sends early warning information to the medical staff synchronously, the medical staff can analyze the electrocardiographic data of the monitored person and communicate with the monitored person in time manually, thereby being beneficial to real-time rescue measures of the monitored person as soon as possible and further guaranteeing the personal health of the monitored person.
In summary, the handheld electrocardiograph monitoring system provided by the invention is multifunctional and convenient to carry, can analyze, manage and alarm the acquired electrocardiograph data while acquiring and monitoring the electrocardiograph, is beneficial to grasping the comprehensive condition of a patient, and fully meets the actual use requirements of users.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (13)
1. A handheld electrocardiographic monitoring system, the system comprising: the system comprises a handheld electrode, a miniature electrocardiograph host, an intelligent terminal and a big data system;
The handheld electrode is connected with the miniature electrocardiograph host, the handheld electrode is provided with two electrode ends for being held by hands, the electrode ends are connected with the miniature electrocardiograph host, the miniature electrocardiograph host comprises a filtering unit, an analog front end, a memory and a processing transmission module, the processing transmission module comprises a lossless compression processing unit and a wireless transmission unit, an electric signal transmitted by the electrode ends is processed by the filtering unit, the analog front end and the lossless compression processing unit and then is transmitted by the wireless transmission unit, the intelligent terminal receives data transmitted by the processing transmission module, the intelligent terminal comprises a graphical display module, a consultation module, a history wearing data module and a setting module, the large data system and the intelligent terminal are transmitted in a remote mode, and the large data system comprises an analysis alarm module;
the lossless compression processing unit operates as follows:
a. Setting the length N of a data compression packet and the calculation depth D according to available memory system resources and the requirement on real-time property; increasing N and D can achieve higher compression ratios, but can occupy more system computing resources and reduce real-time; setting whether lossy compression is allowed; if lossy compression is allowed, lossy compression parameters are set: an approximation threshold K, an approximation upper limit H;
b. D-order difference operation is carried out on the first N data of the input data stream according to the calculated depth D, so as to obtain a difference value array dev_1, …, dev_N-D-1;
c. Sequencing the difference value arrays to obtain arrays a_1, … and a_N from small to large and a maximum value Max, and finding a minimum N value which satisfies the N power of 2 and is smaller than or equal to Max;
d. If lossy compression is allowed, the following determination is added: if the number of segments which are not more than H and are continuously smaller than the value of K exist in the array, recording the starting numerical value position b and the number H of the segments, and processing all data of the segments according to 0;
e. Setting the unit length of the result bit stream as n, and writing the difference value into the result bit stream in sequence, wherein the length is less than the lead zero padding; if lossy compression is allowed, the data processed at 0 will not be added to the bit stream, but only parameters b and h are recorded;
f. Typical compressed packet data structures are: header data |dev_1| … |dev_n;
g. after the bit stream is set, 2 bytes of boundary marks are respectively added at two ends, and the length of the whole compressed data packet is increased after the start of the marks, so that the compressed data packet is isolated in storage, and the integrity of the compressed data packet is verified after transmission;
h. Setting a group of data for recording the setting parameters in the step 1; if the data needs to be dynamically adapted, the data should be dynamically adjusted along with the compression process, and the parameter set corresponding to the initial position of the original data is recorded;
i. Decompression: according to the recorded parameter set, performing reverse operation of the steps, namely finding out head data through boundary marks, and then sequentially performing addition operation with the following data; if lossy compression is performed, the value 0 is inserted into the corresponding position according to b and h, and then the above operation is performed.
2. The system of claim 1, wherein the handheld electrode is connected to the micro electrocardiograph host via an electrode button or connector, and the handheld electrode and the micro electrocardiograph host are integrated on a mobile phone case, a business card holder, a radio or a tablet computer.
3. The handheld electrocardiographic monitoring system of claim 1 wherein the filtering unit comprises: the electrostatic resistor, the T-shaped filter unit, the pi-shaped filter unit and the zener breakdown protection circuit are connected in parallel.
4. The handheld electrocardiograph monitoring system of claim 3 wherein the T-filter unit comprises a first resistor and a first capacitor, the pi-filter unit comprises the first capacitor, a second resistor and a second capacitor, the first end of the first resistor is connected to the handheld electrode, the second end of the first resistor is connected to the first end of the first capacitor and the first end of the second resistor, the second end of the second resistor is connected to the first end of the second capacitor and the input end of the a/D conversion module, respectively, and the second end of the first capacitor and the second end of the second capacitor are both grounded.
5. The handheld electrocardiograph monitoring system of claim 1 wherein the miniature electrocardiograph host further comprises a fall prevention module comprising an accelerometer, a gyroscope, a geomagnetic sensor.
6. The handheld electrocardiograph monitoring system of claim 1 wherein the miniature electrocardiograph host further comprises a thermometer, a respiration rate sensor, and a galvanic skin detection sensor.
7. The system of claim 1, wherein the miniature electrocardiograph host is further equipped with a charging cradle that charges the miniature electrocardiograph host by pogpin or wirelessly.
8. The system of claim 1, wherein the graphical display module comprises a user registration login module that enables a one-to-one binding relationship between the user and the electrocardiograph peripheral, and wherein the electrocardiograph real-time data waveform is displayed after login.
9. The system of claim 1, wherein a doctor list, doctor details, a user order list, and a dialogue list are preset in the consultation module;
The doctor list comprises a doctor list and related brief introduction of online consultation; the doctor details comprise personal detailed description information of a doctor, user evaluation and historical order user evaluation; the user order list records the consultation order submitted by the user and each state information from the submission to the consultation completion; the dialogue list can be communicated with the doctor of the inquiry one by one in a timely manner.
10. The handheld electrocardiographic monitoring system of claim 1 wherein the historical wear data module includes a historical wear data list, a report calendar; the report calendar is provided with an analysis report of the date of wearing the data record; the history wearing data list comprises the wearing data which is being downloaded and has been downloaded, and the wearing data is divided according to single wearing; and after the wearing data is downloaded, the uploading server analyzes the wearing data, and a complete analysis report is generated on the analyzed data.
11. The handheld electrocardiographic monitoring system of claim 1 wherein the setup module comprises: the user personal information checking and maintaining and the user quits the login operation unit; an operation unit for binding, unbinding, clearing data and upgrading firmware of the electrocardiograph peripheral; customer service, opinion feedback, information management unit of application version.
12. The handheld electrocardiograph monitoring system of claim 1 wherein the number of intelligent terminals is several, the number of intelligent terminals being carried by different guardians.
13. The handheld electrocardiographic monitoring system of claim 1 wherein the analysis alarm module comprises: the system comprises a data receiving module, an analyzing module and an early warning information sending module.
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