CN117860244A - Fault detection method and system based on CGM information transmission - Google Patents
Fault detection method and system based on CGM information transmission Download PDFInfo
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Abstract
The invention relates to the technical field of blood sugar information processing, and particularly discloses a fault detection system based on CGM (common-cell culture) information transmission, which comprises the following components: the device comprises a receiving unit, a processing unit, a transmitting unit, a temperature detecting unit and a receiving terminal; the receiving unit is fixed on the skin surface of the user and is used for receiving the real-time CGM information acquired by the probe; the temperature detection unit is fixed on the skin surface of the user, and is used for acquiring skin surface temperature information of the user near the probe and sending the skin surface temperature information to the processing unit; the processing unit is used for receiving the real-time CGM information and the skin surface temperature information, and storing the real-time CGM information, the skin surface temperature information and the current time information as history information after establishing an association relation, wherein the skin surface temperature information does not exceed a preset threshold value compared with a standard value of the skin surface temperature. By adopting the technical scheme of the invention, the fault can be detected in time when the data of the glucose concentration of interstitial fluid is acquired and transmitted.
Description
Technical Field
The invention relates to the technical field of blood glucose information processing, in particular to a fault detection method and system based on CGM information transmission.
Background
The CGM is a continuous blood sugar monitoring in medicine (the specific CGM is dynamic blood sugar monitoring, and refers to a technology for monitoring the change of the glucose concentration of subcutaneous tissue fluid through a glucose sensor, so that continuous, comprehensive and reliable all-day blood sugar information can be provided, the blood sugar fluctuation condition is known, the limitation of blood sugar monitoring is made up), and the CGM is a novel blood sugar monitoring means in the global market, mainly a system for continuously monitoring the glucose level for 24 hours through a subcutaneous sensor (the probe can be put into the skin of the abdomen and generates an electric signal through chemical reaction with glucose in subcutaneous cell fluid of a patient).
Compared with the traditional glucometer, the CGM has more advantages, from the daily use perspective, the CGM can avoid pain and inconvenience caused by frequent fingertip blood sampling, meanwhile, the CGM has a high/low blood sugar alarm function, improves the utilization of real-time glucose monitoring data, and can timely early warn the sharp blood sugar fluctuation and high and low blood sugar level of a patient so as to help the patient to maintain blood sugar stable, realize a time control target within a blood sugar target range and reduce the probability of diabetes related complications.
However, in the actual use process, there is still a problem that the content of glucose in blood is indirectly measured by glucose in tissue fluid. On the one hand, the ratio of glucose in blood to interstitial fluid is not constant, but rather depends on the metabolic rate associated with glucose and insulin physiological factors, including blood velocity, capillary permeability, glucose capture by cells, etc., a dynamically changing process. The time-lapse property between blood and glucose concentration in subcutaneous tissue can further affect accuracy. Under normal conditions (e.g., non-exercise or rapid changes after a meal), the time lag between blood glucose and interstitial fluid glucose concentrations is between 5 and 10 minutes, and physiological differences between individuals can result in differences in time lag durations.
On the other hand, the hysteresis of the sensor itself (which means the sensitivity of the sensor, some seconds, some minutes may be reached), and factors such as filtering algorithms, electrode passivation or biofouling, foreign body reaction encapsulation, etc. can also hinder the diffusion of glucose, causing hysteresis.
In view of the problems of the first aspect, the main solution is mainly to perform processing by performing calibration in the early stage (that is, by simultaneously acquiring the measured values of the fingertip blood and the sensor, and establishing a mapping relationship between the fingertip blood and the measured values of the sensor so as to correct the subsequent measured values of the sensor). Aiming at the problem of the second aspect, the main current solution idea is mainly realized by optimizing a filtering algorithm and limiting the service life of the in-vivo sensor, for example, the service life of a part of branded sensor is about 10 days.
However, in actual use, the probe in the tissue fluid is measured to penetrate about 5mm into the subcutaneous tissue so as to sense the glucose concentration in the tissue fluid. And then the data is transmitted to a transmitter (usually realized by a Bluetooth chip and an external SCM, and the power is supplied by an independent chargeable power supply), and the transmitter transmits the data to a mobile phone or other intelligent terminals in a Bluetooth mode. Because the probe and the transmitter are carried by a user, in order to ensure the endurance, the transmitter generally does not send information outwards at any time, and the related information is sent at intervals of preset time by adopting a generally adopted strategy. However, such a policy cannot check the data collected each time in time (or the checking means is mainly performed according to the historical data, but because the blood glucose concentration of the user generally has a large deviation, if the data is checked only according to the historical data, the situation of missed checking is very easy to occur), and whether a fault occurs in the collection process (or the abnormality is more accurate) cannot be judged, so that the user experience is seriously affected.
Therefore, there is an urgent need for a fault detection method and system based on CGM information transmission, which can detect faults (or anomalies) in time during data acquisition and transmission of glucose concentration of interstitial fluid.
Disclosure of Invention
The invention provides a fault detection method and a fault detection system based on CGM information transmission, which can timely detect faults (or anomalies) when data of the glucose concentration of interstitial fluid is acquired and transmitted.
In order to solve the technical problems, the application provides the following technical scheme:
a fault detection system based on CGM information transmission, comprising: the device comprises a receiving unit, a processing unit, a transmitting unit, a temperature detecting unit and a receiving terminal;
the receiving unit is fixed on the skin surface of the user and is used for receiving the real-time CGM information acquired by the probe;
the temperature detection unit is fixed on the skin surface of the user, and is used for acquiring skin surface temperature information of the user near the probe and sending the skin surface temperature information to the processing unit;
the processing unit is used for receiving the real-time CGM information and the skin surface temperature information, establishing an association relation between the real-time CGM information and the skin surface temperature information and the current time information, storing the association relation as history information, and sending the real-time CGM information and the skin surface temperature information to the transmitting unit if the skin surface temperature information does not exceed a preset threshold value compared with a standard value of the skin surface temperature;
the transmitting unit is used for receiving the real-time CGM information and the skin surface temperature information and transmitting the information to the receiving terminal in a wireless transmission mode at a preset time point;
the receiving terminal is used for receiving real-time CGM information and skin surface temperature information at a preset time point, then reading historical data of the gyroscope and the acceleration sensor in a preset time period, and generating and displaying an integral result report;
the processing unit is further used for reading the history information temporarily stored locally after receiving the real-time CGM information and the skin surface temperature information, judging that a suspected local inflammatory reaction occurs to a current user if the skin surface temperature information exceeds a preset threshold value compared with a standard value of the skin surface temperature, generating first fault prompt information, sending a first wake-up instruction to the receiving terminal through the transmitting unit, and generating first warning information after the receiving terminal receives the first wake-up instruction; the receiving terminal is also used for reading historical data of the gyroscope and the acceleration sensor in a preset time period after receiving the real-time CGM information and the skin surface temperature information, judging whether the change trend of the real-time CGM information is consistent with the change trend of the historical data of the gyroscope and the acceleration sensor in the preset time period, and generating second fault prompt information and prompting if the change trend is inconsistent with the change trend of the historical data of the gyroscope and the acceleration sensor in the preset time period; and if the first wake-up instruction is consistent, shielding the first wake-up instruction, generating a deleting instruction and sending the deleting instruction to the processing unit through the transmitting unit, wherein the processing unit deletes the skin surface temperature information corresponding to the real-time CGM information from the history information after receiving the deleting instruction.
The basic scheme principle and the beneficial effects are as follows: in the invention, the information transmission logic after the probe is optimized mainly to ensure the validity of the data collected by the probe. The receiving unit, the temperature detecting unit, the processing unit and the transmitting unit are integrated. The receiving unit and the probe realize information transmission directly in a wired mode. After the receiving unit acquires the real-time CGM information, the CGM information is sent to the processing unit.
And meanwhile, the temperature detection unit also sends the acquired skin surface temperature information of the user to the processing unit. The processing unit receives the real-time CGM information and the skin surface temperature information simultaneously. In the present invention, skin surface temperature information is essentially collected to determine if the probe is in a normal state in the user's body, where the glucose measurement is completely inaccurate if the skin in contact with the probe is inflamed. Therefore, the invention characterizes whether inflammation occurs or not by measuring the skin surface temperature near the contact with detection, and is used as an important reference index for whether the real-time CGM information is credible or not.
However, the skin surface temperature information of the user is not all inflammatory reactions of the skin at the same, but may be the overall change of the body temperature caused by the movement of the user. If the skin surface temperature of the user is only used as the sole judgment of whether the real-time CGM information is credible or not or related faults, various false positives are very easy to occur, and the user experience is seriously affected.
Because receiving element, temperature detection unit, processing unit and transmitting element are laminated at user's body surface, on taking care of user experience's basis, whole throughput is very limited. Therefore, regarding the judgment of the user's movement situation, the judgment of the user's movement situation is directly performed by the receiving terminal in the present invention. Through reading the change condition of gyroscope and acceleration sensor, when the variation quantity that can represent the condition of user's motion appears, can adopt the real-time CGM information of letter, avoid appearing the false alarm for holistic fault judgement is more accurate.
In summary, the invention introduces an important parameter of skin surface temperature of a user, acquires skin surface temperature information at the location while acquiring real-time CGM information, and then introduces a motion condition of a receiving terminal to the user as a balance parameter. In the measurement with the period of days, the daily behaviors of the user can be fully considered, and in the transmission process after the data acquisition of the glucose concentration of interstitial fluid, whether the user is inflamed or not or whether the user moves or not is judged and identified through multiple main bodies each time, so that the purpose of timely detecting faults (or anomalies) is realized.
Further, the temperature detection unit is a temperature sensitive resistor, the processing unit is an MCU, the transmitting unit is a Bluetooth chip, and the temperature sensitive resistor and the Bluetooth chip are respectively connected with the MCU through signals.
This way, the structure can be made more compact.
Further, the standard value of the skin surface temperature is the change relation between the temperature of the skin at the position of the user when the probe is not inserted and the change amounts of the gyroscope and the acceleration sensor, namely: t=f (T, n), where T is the standard value of skin surface temperature, f represents the fitted functional relationship, T is time, and n is the user motion condition characterized by gyroscope and acceleration sensor variation.
This way, an abnormal situation can be detected more effectively.
Further, the generation logic of the user movement condition n is that in a preset time period, if repeated peaks exceeding a first peak value exist for a preset number of times, the user is judged to be in a movement state, and then the frequency of the repeated peaks is compared with a standard frequency to be used as a first correction parameter; comparing the current movement time with the standard movement time to serve as a second correction parameter; namely: n=p×f 1 /f 2 +(1-p)*t 1 /t 2 Which is provided withWherein p is a personal factor obtained by fitting in advance according to the actual situation of a user, and f 1 For repeating the peak frequency, f 2 Is of standard frequency, t 1 For the time of this movement, t 2 Is the standard movement time.
By the method, individual differences can be fully considered, and detection accuracy is guaranteed.
The receiving terminal is further used for periodically collecting and storing surrounding environment sound information, and after receiving a first wake-up instruction, the receiving terminal reads the stored environment sound information of the previous period and analyzes whether characteristic sound information exists in the environment sound information; the characteristic sound information comprises characteristic keywords and cough sounds; if the characteristic sound information exists, the user is characterized as integral inflammation, the first awakening instruction is shielded, and the skin surface temperature information is obtained.
The method can eliminate the situation that the measurement is inaccurate due to common cold and fever of the user.
Further, the receiving terminal is further used for sending a secondary collection instruction to the processing unit through the transmitting unit after shielding the first awakening instruction, and the processing unit reads the secondary CGM information collected by the probe through the receiving unit after receiving the secondary collection instruction; after receiving the secondary CGM information, the processing unit compares the secondary CGM information with the previous real-time CGM information, if the phase difference is within a preset value range, the checked information is sent to the receiving terminal through the transmitting unit, after the transmitting unit successfully transmits the information, the processing unit generates a dormancy instruction, and the transmitting unit waits for the next preset time point after dormancy; and after receiving the checked information, the receiving terminal sends data normal information to the processing unit through the transmitting unit, and after receiving the data normal information, the processing unit transmits a dormancy instruction to the transmitting unit, and the transmitting unit dormancy waits for the next preset time point.
The data can be acquired secondarily by adopting the mode, so that the accuracy of data acquisition is ensured.
Further, the processing unit is further used for judging whether the skin surface temperature information is lower than a preset value after receiving the real-time CGM information and the skin surface temperature information, generating pause information if the skin surface temperature information is lower than the preset value, transmitting the pause information to the receiving terminal through the transmitting unit, and enabling the receiving terminal to enter an alarm reminding state to send alarm sound with preset duration after receiving the pause information.
By adopting the mode, the situation of inaccurate data caused by irregular use of the user can be avoided.
Further, the receiving terminal is further used for stopping after sending out alarm sounds of preset duration, stopping after sending out alarm sounds of preset duration again after reading the change amplitude of the gyroscope and the acceleration sensor to exceed a preset threshold value until receiving confirmation instructions input by a user and then releasing the alarm reminding state, and is further used for sending dormancy instructions to the transmitting unit when the receiving terminal is in the alarm reminding state.
By adopting the mode, the user can be informed in time on the premise of lower energy consumption.
A fault detection method based on CGM information transmission utilizes the fault detection system based on CGM information transmission.
Drawings
Fig. 1 is a block diagram of a fault detection method and system embodiment 1 based on CGM information transmission.
Detailed Description
The following is a further detailed description of the embodiments:
example 1
A fault detection system (as shown in fig. 1) based on CGM information transmission, comprising: the device comprises a receiving unit, a processing unit, a transmitting unit, a temperature detecting unit and a receiving terminal.
Specifically, the receiving unit is directly connected with the probe signal, and can directly read the real-time CGM information collected by the probe.
The processing unit is MCU, and it is from taking processing function and certain memory function.
The transmitting unit is a bluetooth chip, and in other embodiments, a WIFI chip may be used. In this embodiment, the size requirement of the whole product is considered, and a bluetooth chip is selected or commonly used, and is also in signal connection with the MCU.
The temperature detection unit is a temperature sensitive resistor, and a platinum resistor similar to Pt100 can be selected, so that the characteristic that the resistance value can change under the influence of temperature is utilized. The temperature sensitive resistor is connected with the MCU through signals, the MCU is required to be combined with the actual model selection, the temperature sensitive resistor has an AD conversion function, the resistance value of the temperature sensitive resistor is small, and the temperature sensitive resistor can be directly connected through signals (the power is supplied through the MCU pin, and the resistance value of the channel can be obtained by measuring the current on the channel). If not, the AD conversion module is required to process.
The receiving unit is fixed on the skin surface of the user and is used for receiving the real-time CGM information acquired by the probe;
the temperature detection unit is fixed on the skin surface of the user, and is used for acquiring skin surface temperature information of the user near the probe and sending the skin surface temperature information to the processing unit;
the processing unit is configured to receive the real-time CGM information and the skin surface temperature information, and store the real-time CGM information, the skin surface temperature information and the current time information as history information (usually about 10 days of data, and the normal MCU can store the related numerical information), where the skin surface temperature information does not exceed a preset threshold (in this embodiment, the selected value is 0.8 ℃) compared with a standard value of the skin surface temperature (which may be directly considered to be input after the normal condition of the user is measured), and send the real-time CGM information and the skin surface temperature information to the transmitting unit;
the transmitting unit is used for receiving the real-time CGM information and the skin surface temperature information and transmitting the information to the receiving terminal in a wireless Bluetooth mode according to a preset time point;
the receiving terminal (smart phone is selected in the embodiment) is used for receiving real-time CGM information and skin surface temperature information at a preset time point, then reading historical data of the gyroscope and the acceleration sensor in a preset time period (30 min is selected in the embodiment), and generating an overall result report for display;
the processing unit is further used for reading the history information temporarily stored locally after receiving the real-time CGM information and the skin surface temperature information, judging that a suspected local inflammatory reaction occurs to a current user if the skin surface temperature information exceeds a preset threshold value (0.8 ℃) compared with a standard value of the skin surface temperature, generating first fault prompt information, sending a first awakening instruction to the receiving terminal through the transmitting unit, and generating first warning information after the receiving terminal receives the first awakening instruction; the receiving terminal is further configured to read historical data of the gyroscope and the acceleration sensor in a preset time period (30 min in this embodiment) after receiving the real-time CGM information and the skin surface temperature information, determine whether a change trend of the real-time CGM information is consistent with a change trend of the historical data of the gyroscope and the acceleration sensor in the preset time period, and if not, generate second fault prompt information and prompt the second fault prompt information; and if the first wake-up instruction is consistent, shielding the first wake-up instruction, generating a deleting instruction and sending the deleting instruction to the processing unit through the transmitting unit, wherein the processing unit deletes the skin surface temperature information corresponding to the real-time CGM information from the history information after receiving the deleting instruction.
The receiving terminal is also used for periodically collecting and storing surrounding environment sound information, and after receiving a first wake-up instruction, the receiving terminal reads the stored environment sound information of the previous period and analyzes whether characteristic sound information exists in the environment sound information; the characteristic sound information comprises characteristic keywords and cough sounds; if the characteristic sound information exists, the user is characterized as integral inflammation, the first awakening instruction is shielded, and the skin surface temperature information is obtained.
The processing unit is also used for judging whether the skin surface temperature information is lower than a preset value after receiving the real-time CGM information and the skin surface temperature information, generating pause information if the skin surface temperature information is lower than the preset value, transmitting the pause information to the receiving terminal through the transmitting unit, and sending alarm sound with preset duration after the receiving terminal receives the pause information and enters an alarm reminding state.
The specific use is as follows: the probe has been inserted into the skin of the user, who needs to attach the temperature detection unit to the skin surface in the vicinity of the probe. And then normally starting, at this time, the receiving unit and the probe directly realize information transmission in a wired mode, and after the receiving unit acquires the real-time CGM information, the CGM information is sent to the processing unit.
At the same time, the temperature detection unit also transmits the acquired skin surface temperature information of the user to the processing unit. Of course, the processing unit (MCU) can also control the conduction of the passage where the temperature detection unit is located, measure the current value of the passage and perform AD conversion, then obtain the resistance value through the parameter of the temperature detection unit, and finally obtain the temperature of the temperature detection unit, namely obtain the skin surface temperature information. The processing unit receives the real-time CGM information and the skin surface temperature information simultaneously.
The skin surface temperature information is then collected essentially to determine that the probe is in a normal state for the user in the user's body, where the glucose measurement would be completely inaccurate if the skin in contact with the probe had inflammation. The presence or absence of inflammation is characterized by measuring the temperature of the skin surface in the vicinity of the contact with the probe.
After the skin surface temperature is abnormal, the receiving terminal judges the movement condition of the user, and particularly reads the change condition of the gyroscope and the acceleration sensor. That is, if the user's exercise situation is severe, even if the current skin surface temperature exceeds the threshold value, the real-time CGM information acquired at this time is not abnormal. If the movement condition of the user does not appear, the large probability of representing the abnormal temperature is caused by skin inflammation, and the user is reminded of being able to choose a place to insert the probe into the skin again, and the process is repeated.
The embodiment also discloses a fault detection method based on CGM information transmission, which utilizes the fault detection system based on CGM information transmission.
Example 2
The only difference from example 1 is that the standard value of the skin surface temperature is the change relation between the temperature of the skin at the place where the user is not intervening in the probe and the change amounts of the gyroscope and the acceleration sensor, namely: t=f (T, n), where T is the standard value of skin surface temperature, f represents the fitted functional relationship, T is time, and n is the user motion condition characterized by gyroscope and acceleration sensor variation.
When the probe is specifically used, a user can directly obtain the probe by acquiring the change relation between the skin surface temperature and the movement condition of the user, measuring for a plurality of times and then performing function fitting under the condition of not intervening the probe.
The generation logic of the user movement condition n is that in a preset time period, a repeated peak value exceeding a first peak value for preset times exists, the user is judged to be in a movement state, and then the frequency of the repeated peak value is compared with a standard frequency to be used as a first correction parameter; comparing the current movement time with the standard movement time to serve as a second correction parameter; namely: n=p×f 1 /f 2 +(1-p)*t 1 /t 2 Wherein p is a personal factor obtained by fitting in advance according to the actual situation of a user, and f 1 For repeating the peak frequency, f 2 Is of standard frequency, t 1 For the time of this movement, t 2 The standard movement time (30 min chosen in this example).
When the device is particularly used, the user can be accurately identified to be in walking, running or other exercise states in a repeated peak mode, and the exercise duration is also included in the influence range. And, during the first use, the probe is not inserted, the first fitting is carried out, and the parameter p which accords with the personal characteristics of the user is found. Namely, a user directly attaches the temperature detection unit to the skin surface, and then records the relation among the quantity of the user motion, the motion time and the skin surface temperature, and the temperature detection unit can be realized through multiple fitting.
Example 3
Compared with embodiment 1, the difference is that the receiving terminal is further configured to stop after sending out an alarm sound for a preset duration, and stop after sending out an alarm sound for a preset duration again after reading the change amplitude of the gyroscope and the acceleration sensor to exceed a preset threshold, until the alarm reminding state is released after receiving a confirmation instruction input by a user, and the receiving terminal is further configured to send a sleep instruction to the transmitting unit when the receiving terminal is in the alarm reminding state.
When the alarm reminding device is specifically used, when the alarm reminding state is entered, the alarm reminding device is used for reminding at intervals, and the alarm reminding device is stopped after confirmation of a user.
The foregoing is merely an embodiment of the present invention, the present invention is not limited to the field of this embodiment, and the specific structures and features well known in the schemes are not described in any way herein, so that those skilled in the art will know all the prior art in the field before the application date or priority date, and will have the capability of applying the conventional experimental means before the date, and those skilled in the art may, in light of the teaching of this application, complete and implement this scheme in combination with their own capabilities, and some typical known structures or known methods should not be an obstacle for those skilled in the art to practice this application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. The fault detection system based on CGM information transmission is characterized in that: comprising the following steps: the device comprises a receiving unit, a processing unit, a transmitting unit, a temperature detecting unit and a receiving terminal;
the receiving unit is fixed on the skin surface of the user and is used for receiving the real-time CGM information acquired by the probe;
the temperature detection unit is fixed on the skin surface of the user, and is used for acquiring skin surface temperature information of the user near the probe and sending the skin surface temperature information to the processing unit;
the processing unit is used for receiving the real-time CGM information and the skin surface temperature information, establishing an association relation between the real-time CGM information and the skin surface temperature information and the current time information, storing the association relation as history information, and sending the real-time CGM information and the skin surface temperature information to the transmitting unit if the skin surface temperature information does not exceed a preset threshold value compared with a standard value of the skin surface temperature;
the transmitting unit is used for receiving the real-time CGM information and the skin surface temperature information and transmitting the information to the receiving terminal in a wireless transmission mode at a preset time point;
the receiving terminal is used for receiving real-time CGM information and skin surface temperature information at a preset time point, then reading historical data of the gyroscope and the acceleration sensor in a preset time period, and generating and displaying an integral result report;
the processing unit is further used for reading the history information temporarily stored locally after receiving the real-time CGM information and the skin surface temperature information, judging that a suspected local inflammatory reaction occurs to a current user if the skin surface temperature information exceeds a preset threshold value compared with a standard value of the skin surface temperature, generating first fault prompt information, sending a first wake-up instruction to the receiving terminal through the transmitting unit, and generating first warning information after the receiving terminal receives the first wake-up instruction; the receiving terminal is also used for reading historical data of the gyroscope and the acceleration sensor in a preset time period after receiving the real-time CGM information and the skin surface temperature information, judging whether the change trend of the real-time CGM information is consistent with the change trend of the historical data of the gyroscope and the acceleration sensor in the preset time period, and generating second fault prompt information and prompting if the change trend is inconsistent with the change trend of the historical data of the gyroscope and the acceleration sensor in the preset time period; and if the first wake-up instruction is consistent, shielding the first wake-up instruction, generating a deleting instruction and sending the deleting instruction to the processing unit through the transmitting unit, wherein the processing unit deletes the skin surface temperature information corresponding to the real-time CGM information from the history information after receiving the deleting instruction.
2. The CGM information transmission-based fault detection system according to claim 1, wherein: the temperature detection unit is a temperature sensitive resistor, the processing unit is an MCU, the transmitting unit is a Bluetooth chip, and the temperature sensitive resistor and the Bluetooth chip are respectively connected with the MCU through signals.
3. The CGM information transmission-based fault detection system according to claim 2, wherein: the standard value of the skin surface temperature is the change relation between the skin temperature at the position of the user and the change amounts of the gyroscope and the acceleration sensor when the probe is not inserted, namely: t=f (T, n), where T is the standard value of skin surface temperature, f represents the fitted functional relationship, T is time, and n is the user motion condition characterized by gyroscope and acceleration sensor variation.
4. A CGM information transmission-based fault detection system according to claim 3, wherein: the generation logic of the user movement condition n is that in a preset time period, a repeated peak value exceeding a first peak value for preset times exists, the user is judged to be in a movement state, and then the frequency of the repeated peak value is compared with a standard frequency to be used as a first correction parameter; comparing the current movement time with the standard movement time to serve as a second correction parameter; namely: n=p×f 1 /f 2 +(1-p)*t 1 /t 2 Wherein p is a personal factor obtained by fitting in advance according to the actual situation of a user, and f 1 For repeating the peak frequency, f 2 Is of standard frequency, t 1 For the time of this movement, t 2 Is the standard movement time.
5. The CGM information transmission-based fault detection system according to claim 4, wherein: the receiving terminal is also used for periodically collecting and storing surrounding environment sound information, and after receiving a first wake-up instruction, the receiving terminal reads the stored environment sound information of the previous period and analyzes whether characteristic sound information exists in the environment sound information; the characteristic sound information comprises characteristic keywords and cough sounds; if the characteristic sound information exists, the user is characterized as integral inflammation, the first awakening instruction is shielded, and the skin surface temperature information is obtained.
6. The CGM information transmission-based fault detection system according to claim 5, wherein: the receiving terminal is also used for transmitting a secondary acquisition instruction to the processing unit through the transmitting unit after shielding the first awakening instruction, and the processing unit reads the secondary CGM information acquired by the probe again through the receiving unit after receiving the secondary acquisition instruction; after receiving the secondary CGM information, the processing unit compares the secondary CGM information with the previous real-time CGM information, if the phase difference is within a preset value range, the checked information is sent to the receiving terminal through the transmitting unit, after the transmitting unit successfully transmits the information, the processing unit generates a dormancy instruction, and the transmitting unit waits for the next preset time point after dormancy; and after receiving the checked information, the receiving terminal sends data normal information to the processing unit through the transmitting unit, and after receiving the data normal information, the processing unit transmits a dormancy instruction to the transmitting unit, and the transmitting unit dormancy waits for the next preset time point.
7. The CGM information transmission-based fault detection system according to claim 6, wherein: the processing unit is also used for judging whether the skin surface temperature information is lower than a preset value after receiving the real-time CGM information and the skin surface temperature information, generating pause information if the skin surface temperature information is lower than the preset value, transmitting the pause information to the receiving terminal through the transmitting unit, and sending alarm sound with preset duration after the receiving terminal receives the pause information and enters an alarm reminding state.
8. The CGM information transmission-based fault detection system according to claim 7, wherein: the receiving terminal is further used for stopping after sending out alarm sounds of preset duration, stopping after sending out alarm sounds of preset duration again after reading the change amplitude of the gyroscope and the acceleration sensor to exceed a preset threshold value until receiving confirmation instructions input by a user and then releasing the alarm reminding state, and sending dormancy instructions to the transmitting unit when the receiving terminal is in the alarm reminding state.
9. A fault detection method based on CGM information transmission is characterized in that: a fault detection system based on CGM information transmission as claimed in any one of claims 1 to 8.
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