CN114397334B - A non-invasive blood glucose analysis system - Google Patents

Abstract

The embodiment of the present invention relates to a non-invasive blood glucose analysis system, the system comprising: a data acquisition device, a mobile terminal and a server; the data acquisition device comprises a main control module, a signal light module, a data acquisition module, a Bluetooth communication module and a battery management module; the main control module is used to perform equipment self-check processing on each module, perform equipment power management through the battery management module, perform active Bluetooth connection processing and passive Bluetooth connection processing through the Bluetooth communication module, perform data acquisition on the detection object and the detection environment through the data acquisition module to generate a collection data set and send it to the mobile terminal; the mobile terminal is used to perform PPG signal display processing, send the collection data set to the server and receive the blood glucose analysis data sent back for display; the server is used to perform blood glucose analysis to generate blood glucose analysis data and send it to the mobile terminal. The system of the present invention can reduce the difficulty of user detection and improve user experience.

Description

A non-invasive blood glucose analysis system

Technical Field

The present invention relates to the technical field of data processing, and in particular to a non-invasive blood sugar analysis system.

Background technique

In the field of health monitoring, blood sugar level is a very important health assessment parameter. If blood sugar is unstable for a long time, it may cause different degrees of lesions in various organs and tissues. The current common blood sugar value analysis method is mainly based on invasive extraction of human blood, and chemical analysis of the extracted blood to obtain blood sugar analysis values. Because this observation method will cause trauma to the human body, if this observation method is used to observe blood sugar in the human body for a long time, it will undoubtedly bring a lot of inconvenience to users, such as wound pain, wound infection and other adverse experiences.

Summary of the invention

The purpose of the present invention is to provide a non-invasive blood glucose analysis system in view of the defects of the prior art, the system comprising: a data acquisition device, a mobile terminal and a server; the data acquisition device is used to collect the photoplethysmography (PPG) signal, contact heat conduction signal, body surface thermal radiation signal, body surface temperature and humidity data of the detection object, as well as the ambient light signal, ambient thermal radiation signal and ambient temperature and humidity data of the detection environment; the mobile terminal is used to display the PPG signal and synchronously transmit the collected data to the server for data analysis related to blood glucose, and display the analysis results. Through the system of the present invention, a convenient non-invasive blood glucose analysis method can be provided for users, thereby achieving the purpose of reducing the difficulty of user detection and improving user experience.

To achieve the above-mentioned purpose, an embodiment of the present invention provides a non-invasive blood glucose analysis system, the system comprising: a data acquisition device, a mobile terminal and a server;

The data acquisition device is connected to the mobile terminal; the data acquisition device includes a main control module, a signal light module, a data acquisition module, a Bluetooth communication module and a battery management module; the main control module is respectively connected to the signal light module, the data acquisition module, the Bluetooth communication module and the battery management module; the main control module is used to perform a device self-check process on each module when the device is turned on; the main control module is also used to manage the device power through the battery management module when the preset device state is a normal working state; the main control module is also used to perform active Bluetooth connection processing through the Bluetooth communication module when the device state is a normal working state; the main control module is also used to perform a device self-check process when the device state is a normal working state When the state is in a normal working state and a connection request sent by the mobile terminal is received, a passive Bluetooth connection process is performed through the Bluetooth communication module; the main control module is also used for, when the preset detection activation state is an activated state, collecting data on the detection object and the detection environment through the data acquisition module to generate a collection data set, and sending the collection data set to the mobile terminal through the Bluetooth communication module; wherein the collection data set includes three groups of PPG signal collection data, ambient light signal collection data, body surface thermal radiation collection data, ambient thermal radiation collection data, body surface temperature collection data, body surface humidity collection data, ambient temperature collection data, ambient humidity collection data and contact heat conduction collection data;

The mobile terminal is connected to the server; the mobile terminal is used to perform PPG signal display processing on the three sets of PPG signal collection data; the mobile terminal is also used to send the collection data set to the server, receive the blood glucose analysis data sent back by the server, and perform data display processing on the blood glucose analysis data;

The server is used for performing blood sugar analysis according to the collected data set to generate the blood sugar analysis data, and sending the blood sugar analysis data to the mobile terminal.

Preferably, the main control module is specifically used to set the preset device state to the startup state when performing device self-test processing on each module; and perform system parameter self-test processing on the preset system parameters stored inside the main control module to generate a first self-test state; and perform signal light function self-test processing on the signal light module to generate a second self-test state; and perform sub-unit device self-test processing on the data acquisition module to generate a third self-test state; and perform Bluetooth module self-test processing on the Bluetooth communication module to generate a fourth self-test state; and judge whether the first self-test state, the second self-test state, the third self-test state and the fourth self-test state are all successful self-tests; if all are successful self-tests, set the device state to a normal working state; if not all are successful self-tests, set the device state to a fault state; and when the device state is a normal working state, set the signal light display color of the signal light module to a preset first color; and when the device state is a device self-test failure, set the signal light display color of the signal light module to a preset second color.

Preferably, the main control module is specifically used to periodically obtain the remaining battery power from the battery management module at a preset power check frequency when the device power management is performed through the battery management module; and when the remaining battery power is not lower than a preset normal working power threshold, set the signal light display color of the signal light module to a preset first color; and when the remaining battery power is lower than the normal working power threshold, set the device status to a low power status.

Preferably, the main control module is specifically used to record the mobile terminal corresponding to the preset Bluetooth pairing terminal information as the target terminal and scan the target terminal when the active Bluetooth connection processing is performed through the Bluetooth communication module; if the target terminal is found through the scan, the first Bluetooth pairing processing is performed with the target terminal; if the first Bluetooth pairing processing is successful, a first data sending and receiving Bluetooth channel corresponding to the target terminal is created, and the signal light display color of the signal light module is set to a preset third color.

Preferably, the data acquisition device is specifically used to perform a second Bluetooth pairing process with the mobile terminal when the passive Bluetooth connection process is performed through the Bluetooth communication module; if the second Bluetooth pairing process is successful, a second Bluetooth channel for sending and receiving data corresponding to the mobile terminal is created, and the signal light display color of the signal light module is set to a preset third color.

Preferably, the data acquisition module includes a three-band PPG signal acquisition unit, an ambient light signal acquisition unit, a body surface thermal radiation acquisition unit, an ambient thermal radiation acquisition unit, a body surface temperature and humidity acquisition unit, an ambient temperature and humidity acquisition unit, and a contact conduction heat acquisition unit; each acquisition unit of the data acquisition module is respectively connected to the main control module;

The device of the three-band PPG signal acquisition unit specifically includes a three-band light-emitting diode array, a first lens and a first photodetector; the device of the three-band light-emitting diode array includes light-emitting diodes of three bands;

The device of the ambient light signal acquisition unit specifically includes a second lens and a second photodetector;

The device of the body surface thermal radiation collection unit is specifically a first infrared radiation temperature sensor;

The device of the environmental thermal radiation collection unit is specifically a second infrared radiation temperature sensor;

The device of the body surface temperature and humidity acquisition unit is specifically a first temperature and humidity sensor;

The device of the environmental temperature and humidity acquisition unit is specifically a second temperature and humidity sensor;

The device of the contact conduction heat collection unit is specifically a thermistor sensor.

Preferably, the main control module is specifically used to send corresponding data acquisition instructions to the three-band PPG signal acquisition unit, the ambient light signal acquisition unit, the body surface thermal radiation acquisition unit, the ambient thermal radiation acquisition unit, the body surface temperature and humidity acquisition unit, the ambient temperature and humidity acquisition unit and the contact conduction heat acquisition unit respectively when data is collected on the detection object and the detection environment through the data acquisition module; and receive the collected data returned by each acquisition unit to form the collected data set.

Further, the three-band PPG signal acquisition unit is used to call the three light-emitting diodes of the three-band light-emitting diode array upon receiving the first data acquisition instruction, and sequentially use the three-band light to illuminate the top of the finger of the detection object; and in each irradiation process, the first lens located on the belly of the finger of the detection object converges the light transmitted from the belly of the finger, and the first photodetector on the other side of the first lens performs photoelectric conversion on the converged light to generate a group of PPG signal acquisition data of the corresponding band; and the PPG signal acquisition data corresponding to the three bands are combined into the three groups of PPG signal acquisition data and sent to the main control module;

The ambient light signal acquisition unit is used to call the second photodetector to perform photoelectric conversion processing on the natural light gathered by the second lens upon receiving the second data acquisition instruction, and generate the ambient light signal acquisition data to send to the main control module;

The body surface thermal radiation acquisition unit is used to call the first infrared radiation temperature sensor at a first interval distance from the body surface of the detection object when receiving the third data acquisition instruction, collect the body surface thermal radiation signal of the detection object, generate the body surface thermal radiation acquisition data and send it to the main control module;

The environmental thermal radiation acquisition unit is used to call the second infrared radiation temperature sensor at a second interval distance from the body surface of the detection object when receiving the fourth data acquisition instruction, collect the thermal radiation signal of the detection environment, generate the environmental thermal radiation acquisition data and send it to the main control module; the second interval distance is greater than the first interval distance;

The body surface temperature and humidity acquisition unit is used to call the first temperature and humidity sensor whose distance from the body surface of the detection object is less than the set close distance threshold when receiving the fifth data acquisition instruction, collect the body surface temperature and humidity change signal of the detection object, generate the corresponding body surface temperature acquisition data and the body surface humidity acquisition data and send them to the main control module;

The environmental temperature and humidity acquisition unit is used to call the second temperature and humidity sensor whose distance from the surface of the detection object is greater than the set close distance threshold when receiving the sixth data acquisition instruction, collect the temperature and humidity change signal of the detection environment, generate the corresponding environmental temperature acquisition data and the environmental humidity acquisition data and send them to the main control module;

The contact conduction heat collection unit is used to call the thermistor sensor in contact with the body surface of the detection object when receiving the seventh data collection instruction, collect the contact heat conduction signal of the detection object, generate the corresponding contact heat conduction collection data and send it to the main control module.

Furthermore, the three bands are specifically a 650nm infrared band, a 940nm near infrared band and a 1050nm near infrared band.

The embodiment of the present invention provides a non-invasive blood glucose analysis system, which includes: a data acquisition device, a mobile terminal and a server; the data acquisition device is used to collect three-band PPG signals, contact heat conduction signals, body surface thermal radiation signals, body surface temperature and humidity data of the detection object, as well as the ambient light signal, ambient thermal radiation signal and ambient temperature and humidity data of the detection environment; the mobile terminal is used to display the PPG signal and synchronously transmit the collected data to the server for data analysis related to blood glucose, and display the analysis results. Through the system of the present invention, a convenient non-invasive blood glucose analysis method is provided for users, which reduces the difficulty of user detection and improves user experience.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a module structure diagram of a non-invasive blood glucose analysis system provided in Embodiment 1 of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all 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.

An embodiment of the present invention provides a non-invasive blood glucose analysis system, as shown in FIG1 which is a module structure diagram of a non-invasive blood glucose analysis system provided in Embodiment 1 of the present invention. The system mainly includes: a data acquisition device 11, a mobile terminal 12 and a server 13.

(I) Data acquisition equipment 11

The data acquisition device 11 is connected to the mobile terminal 12;

The data acquisition device 11 includes a main control module 111, a signal light module 112, a data acquisition module 113, a Bluetooth communication module 114 and a battery management module 115;

The main control module 111 is connected to the signal light module 112, the data acquisition module 113, the Bluetooth communication module 114 and the battery management module 115 respectively; the main control module 111 is used to perform a self-check process on each module when the device is turned on; the main control module 111 is also used to manage the power of the device through the battery management module 115 when the preset device state is a normal working state; the main control module 111 is also used to perform an active Bluetooth connection process through the Bluetooth communication module 114 when the device state is a normal working state; the main control module 111 is also used to perform a self-check process on each module when the device state is a normal working state and receives a connection request sent by the mobile terminal 12 , and perform passive Bluetooth connection processing through the Bluetooth communication module 114; the main control module 111 is also used to collect data on the detection object and the detection environment through the data acquisition module 113 to generate a collection data set when the preset detection activation state is the activated state, and send the collection data set to the mobile terminal 12 through the Bluetooth communication module 114; wherein the collection data set includes three groups of PPG signal collection data, ambient light signal collection data, body surface thermal radiation collection data, ambient thermal radiation collection data, body surface temperature collection data, body surface humidity collection data, ambient temperature collection data, ambient humidity collection data and contact heat conduction collection data;

The data acquisition module 113 includes a three-band PPG signal acquisition unit 1131, an ambient light signal acquisition unit 1132, a body surface thermal radiation acquisition unit 1133, an ambient thermal radiation acquisition unit 1134, a body surface temperature and humidity acquisition unit 1135, an ambient temperature and humidity acquisition unit 1136, and a contact conduction heat acquisition unit 1137; each acquisition unit of the data acquisition module 113 is connected to the main control module 111 respectively; wherein the device of the three-band PPG signal acquisition unit 1131 specifically includes a three-band light emitting diode array, a first lens and a first photodetector, and the three-band light emitting diode array is connected to the main control module 111. The devices of the diode array include light-emitting diodes of three bands; the devices of the ambient light signal acquisition unit 1132 specifically include a second lens and a second photodetector; the devices of the body surface thermal radiation acquisition unit 1133 specifically are the first infrared radiation temperature sensor; the devices of the ambient thermal radiation acquisition unit 1134 specifically are the second infrared radiation temperature sensor; the devices of the body surface temperature and humidity acquisition unit 1135 specifically are the first temperature and humidity sensor; the devices of the ambient temperature and humidity acquisition unit 1136 specifically are the second temperature and humidity sensor; the devices of the contact conduction heat acquisition unit 1137 specifically are thermistor sensors.

Here, the three bands are specifically a 650nm infrared band, a 940nm near infrared band, and a 1050nm near infrared band.

Here, the main control module 111 has a storage medium inside, which can be used to store system parameters related to device management, including at least device status parameters reflecting whether the data acquisition device 11 is in a normal working state; the device status includes four status information: startup state, normal working state, low power state and fault state.

In a specific implementation method provided in this embodiment, the main control module 111 is specifically used to set the preset device state to the startup state when performing device self-test processing on each module; and perform system parameter self-test processing on the preset system parameters stored in the main control module 111 to generate a first self-test state; and perform signal light function self-test processing on the signal light module 112 to generate a second self-test state; and perform sub-unit device self-test processing on the data acquisition module 113 to generate a third self-test state; and perform Bluetooth module self-test processing on the Bluetooth communication module 114 to generate a fourth self-test state; and judge whether the first self-test state, the second self-test state, the third self-test state and the fourth self-test state are all successful self-tests; if all are successful self-tests, set the device state to a normal working state; if not all are successful self-tests, set the device state to a fault state; and when the device state is a normal working state, set the signal light display color of the signal light module 112 to a preset first color; and when the device state is a device self-test failure, set the signal light display color of the signal light module 112 to a preset second color.

Here, the first color is green by default, and the second color is red by default. Naturally, other different colors can also be used to set the two.

Here, when the data acquisition device 11 is turned on, the device self-test is first performed. During the device self-test, the device state is set to the startup state. If the device self-test is successful, the device state is a normal working state. If the device self-test fails, the device state is a fault state. During the self-test, the main control module 111 will perform self-tests on itself and the signal light module 112, the data acquisition module 113, and the Bluetooth communication module 114 respectively. The system parameter self-test performed by the main control module 111 itself is actually to identify the correctness of the data format and value of the system parameters stored in the internal storage medium. If the data format or value is found to be wrong, the self-test fails, otherwise the self-test succeeds, and the corresponding output state is the first self-test state. The signal light function self-test performed by the main control module 111 on the signal light module 112 is actually That is, to check whether the signal light off/on control function, the signal light color switching function, and the signal light emitting components of the signal light module 112 are in normal working state. If all are normal, the self-test is successful, otherwise the self-test fails, and the corresponding output state is the second self-test state; the sub-unit device self-test processing performed by the main control module 111 on the data acquisition module 113 is actually to check the normal working state of each data unit of the data acquisition module 113. If all are normal, the self-test is successful, otherwise the self-test fails, and the corresponding output state is the third self-test state; the Bluetooth module self-test processing performed by the main control module 111 on the Bluetooth communication module 114 is actually to check the basic functions of the communication module 114 such as opening/closing. If all are normal, the self-test is successful, otherwise the self-test fails, and the corresponding output state is the fourth self-test state.

Optionally, the main control module 111 re-performs the device self-check process when the device status is a faulty state, and counts the number of consecutive self-check failures to generate a consecutive failure count; if the consecutive failure count exceeds the set failure count threshold, the self-check is stopped and the signal light of the signal light module 112 is kept on and the second color is used as the signal light color.

Here, the failure count threshold can be set to 0, 1 or 3 times. If the failure count threshold is set to 0, it means that no self-check is performed when the device is in a fault state. If the failure count threshold is set to 1, it means that a self-check can be performed when the device is in a fault state. If the failure count threshold is set to 3, it means that the maximum number of consecutive self-checks when the device is in a fault state is 3. Naturally, it can also be set separately according to specific implementation requirements.

Optionally, if a failure occurs during the operation of the data acquisition device 11 after the self-check is successful and the device cannot continue to work normally due to other reasons, the device state can be changed to a fault state, and the main control module 111 can re-perform the device self-check process.

In another specific implementation method provided in this embodiment, the main control module 111 is specifically used to periodically obtain the remaining battery power from the battery management module 115 according to a preset power check frequency when the device power management is performed through the battery management module 115; and when the remaining battery power is not lower than the preset normal working power threshold, set the signal light display color of the signal light module 112 to a preset first color; and when the remaining battery power is lower than the normal working power threshold, set the device status to a low power status.

Here, when the data acquisition device 11 successfully completes the self-check, that is, when the device is in normal working state, the device power management will be performed, which is actually a cyclic identification of the real-time remaining battery power of the device, and the cycle frequency is the power check frequency; if the current real-time remaining battery power is sufficient to support the normal operation of the device, the signal light color of the signal light module 112 remains unchanged in the first color; if the remaining battery power cannot support the normal operation of the device, the device status is set to a low power state.

Optionally, the main control module 111 can also be used to switch the signal light color of the signal light module 112 to yellow or orange when the device status is set to a low power state, and send low power information to the mobile terminal 12 when the data acquisition device 11 has established a connection with the mobile terminal 12.

In another specific implementation method provided in this embodiment, the main control module 111 is specifically used to record the mobile terminal 12 corresponding to the preset Bluetooth pairing terminal information as the target terminal and scan the target terminal when performing active Bluetooth connection processing through the Bluetooth communication module 114; if the target terminal is found during the scan, the first Bluetooth pairing processing is performed with the target terminal; if the first Bluetooth pairing processing is successful, a first data sending and receiving Bluetooth channel corresponding to the target terminal is created, and the signal light display color of the signal light module 112 is set to a preset third color.

In another specific implementation method provided in this embodiment, the data acquisition device 11 is specifically used to perform a second Bluetooth pairing process with the mobile terminal 12 when performing passive Bluetooth connection processing through the Bluetooth communication module 114; if the second Bluetooth pairing process is successful, a second Bluetooth channel for sending and receiving data corresponding to the mobile terminal 12 is created, and the signal light display color of the signal light module 112 is set to a preset third color.

Here, the third color is blue by default, but you can also select other colors for setting.

Here, the data acquisition device 11 will be preset with the Bluetooth pairing terminal information of the mobile terminal 12 that is bound to it and matches it, and the Bluetooth pairing terminal information includes the device identification of the mobile terminal 12 and the corresponding Bluetooth pairing code; the wireless connection method between the data acquisition device 11 and the mobile terminal 12 is specifically a Bluetooth connection method; the embodiment of the present invention provides two connection modes when processing the specific Bluetooth connection process: an active connection mode and a passive connection mode.

For the active connection mode, it actually means that when the data acquisition device 11 successfully performs the power-on self-test and the remaining battery power is sufficient to support the normal operation of the device, that is, when the device status remains in a normal working state, the data acquisition device 11 automatically scans and polls the surrounding Bluetooth devices; if a mobile terminal 12 corresponding to the device identifier of the Bluetooth pairing terminal information is scanned, it is used as the target terminal, and the Bluetooth pairing code of the Bluetooth pairing terminal information is used to perform a pairing operation according to the well-known Bluetooth matching device pairing processing flow, that is, the first Bluetooth pairing process; if the first Bluetooth pairing process is successful, a corresponding data channel is created locally in the data acquisition device 11 as the first data receiving and sending Bluetooth channel for data sending and receiving operations between the data acquisition device 11 and the mobile terminal 12; at the same time, the signal light display color of the signal light module 112 will be set to a preset third color, so as to show the user, that is, the detection object, that the connection with the mobile terminal has been established; after the signal light display color of the signal light module 112 is set to the third color, the signal light is in a long-on state by default when the Bluetooth connection is not interrupted.

For the passive connection mode, in fact, if the data acquisition device 11 does not find the mobile terminal 12 that matches the Bluetooth pairing terminal information during the first active connection processing after the power-on self-test is successful, it will not continue the active scanning connection operation, but set the device's own identification to the visible state of the surrounding devices, and perform the corresponding passive Bluetooth connection processing when receiving the connection request sent by other Bluetooth devices; in the passive Bluetooth connection processing, the data acquisition device 11 first performs the second Bluetooth pairing processing with the mobile terminal 12, specifically using the Bluetooth pairing code of the Bluetooth pairing terminal information to compare the pairing parameters in the connection instruction sent by the mobile terminal 12. If the two match, the second Bluetooth pairing processing is successful, otherwise it fails; if the second Bluetooth pairing processing is successful, a corresponding data channel is created locally in the data acquisition device 11 as a second data transmission and reception Bluetooth channel for responsible for the data transmission and reception operations between the data acquisition device 11 and the mobile terminal 12; at the same time, the signal light display color of the signal light module 112 will be set to the preset third color, so as to show the user, that is, the detection object, that the connection with the mobile terminal has been established; after the signal light display color of the signal light module 112 is set to the third color, the signal light is in a long-on state by default when the Bluetooth connection is not interrupted.

The system parameters related to device management stored in the main control module 111 also include detection activation state parameters reflecting the working state of the device detection phase; the detection activation state includes three state information: disconnected state, unactivated state and activated state.

The main control module 111 is also used to manage the switching of the detection activation state.

In another specific implementation method provided in the present embodiment, the main control module 111 is specifically used to switch the detection activation state. When the connection with the mobile terminal 12 has not been established, the detection activation state is set to a disconnected state; when the connection with the mobile terminal 12 is established, the detection activation state is set to an inactivated state; when the detection instruction sent by the mobile terminal 12 is received, the detection activation state is set to an activated state; when the detection activation state is an activated state, the data acquisition and processing flow of the detection object and the detection environment is immediately started to obtain a collection data set including three groups of PPG signal collection data, ambient light signal collection data, body surface thermal radiation collection data, ambient thermal radiation collection data, body surface temperature collection data, body surface humidity collection data, ambient temperature collection data, ambient humidity collection data and contact heat conduction collection data, and the collection data set is sent to the mobile terminal 12; when the detection termination instruction sent by the mobile terminal 12 is received, the ongoing data acquisition processing is stopped and the detection activation state is modified to an inactivated state.

Optionally, when the main control module 111 detects that the activation state is the activated state, it may also start the data collection process only after confirming that the detection object has put the finger into the designated mechanical part of the device.

In another specific implementation method provided by the present embodiment, the main control module 111 is specifically used to record the collected data output by the three-band PPG signal collection unit 1131 as the first collected data when confirming whether the detection object has placed the finger into the designated mechanical part of the device; and continuously segment the first collected data at a preset time interval to obtain multiple first segmented data; and perform average light intensity calculation on each first segmented data to generate corresponding first segmented light intensity data; and perform difference calculation on adjacent first segmented light intensity data to generate a corresponding first light intensity difference = previous first segmented light intensity data - next first segmented light intensity data; if the first light intensity difference is a positive number and is greater than the first set light intensity threshold, it is confirmed that the detection object has placed the finger into the designated mechanical part of the device.

Here, the first segmented light intensity data obtained before the detection object puts the finger into the designated mechanical part of the device must be greater than the first segmented light intensity data obtained after the finger is put into the designated mechanical part of the device; the segments of the first collected data are continuously compared, and once it is found that the light intensity difference between the previous and next segments has changed significantly, and the trend of change is a decreasing trend, it is considered that it may be caused by the detection object putting the finger into the designated mechanical part of the device; at this time, if the first light intensity difference is greater than the first set light intensity threshold, it is determined that the detection object has put the finger into the designated mechanical part of the device.

Optionally, when the detection activation state is an activated state, the main control module 111 can also stop the ongoing data collection processing after confirming that the detection object has moved the finger away from the specified mechanical part of the device, and modify the detection activation state to an unactivated state, and send a collection error message to the mobile terminal 12.

In another specific implementation provided by the present embodiment, the main control module 111 is specifically used to record the collected data output by the three-band PPG signal collection unit 1131 as the second collected data when confirming whether the detection object has moved the finger away from the designated mechanical part of the device; and continuously segment the second collected data at a preset time interval to obtain a plurality of second segmented data; and perform an average light intensity calculation on each second segmented data to generate corresponding second segmented light intensity data; and perform a difference calculation on adjacent second segmented light intensity data to generate a corresponding second light intensity difference = the previous second segmented light intensity data - the next second segmented light intensity data; if the second light intensity difference is a negative number and is less than the second set light intensity threshold, it is confirmed that the detection object has moved the finger away from the designated mechanical part of the device.

Here, the second segmented light intensity data obtained before the detection object moves the finger device away from the designated mechanical part of the device must be smaller than the second segmented light intensity data obtained after the finger device is moved away from the designated mechanical part of the device; the segments of the second collected data are continuously compared, and once it is found that the light intensity difference between the previous and next segments has changed significantly, and the trend of change is an increasing trend, it is considered that it may be caused by the finger device being moved away from the designated mechanical part of the device; at this time, if the second light intensity difference is smaller than the second set light intensity threshold, it is determined that the detection object has moved the finger device away from the designated mechanical part of the device.

In another specific implementation method provided in this embodiment, the main control module 111 is specifically used to send corresponding data acquisition instructions to the three-band PPG signal acquisition unit 1131, the ambient light signal acquisition unit 1132, the body surface thermal radiation acquisition unit 1133, the ambient thermal radiation acquisition unit 1134, the body surface temperature and humidity acquisition unit 1135, the ambient temperature and humidity acquisition unit 1136 and the contact conduction heat acquisition unit 1137 respectively when collecting data on the detection object and the detection environment through the data acquisition module 113; and receive the collected data returned by each acquisition unit to form a collection data set.

Here, the main control module 111 will start the data collection and processing flow of the detection object and the detection environment when the detection activation state is the activation state, specifically, the data of the detection object and the detection environment are collected through the data collection module 113; when collecting data, the main control module 111 will send corresponding data to each collection unit of the data collection module 113 (three-band PPG signal collection unit 1131, ambient light signal collection unit 1132, body surface thermal radiation collection unit 1133, ambient thermal radiation collection unit 1134, body surface temperature and humidity collection unit 1135, ambient temperature and humidity collection unit 1136 and contact conduction heat collection unit 1137) respectively. According to the acquisition instructions (the first, second, third, fourth, fifth, sixth and seventh data acquisition instructions below), each acquisition unit is stimulated to perform corresponding data acquisition operations to generate corresponding acquisition data (three groups of PPG signal acquisition data, ambient light signal acquisition data, body surface thermal radiation acquisition data, ambient thermal radiation acquisition data, body surface temperature acquisition data, body surface humidity acquisition data, ambient temperature acquisition data, ambient humidity acquisition data and contact heat conduction acquisition data) and send them back to the main control module 111; the main control module 111 integrates all the received acquisition data according to the specified format to obtain an acquisition data set, and sends the acquisition data set to the mobile terminal 12.

In another specific implementation provided by the present embodiment, the three-band PPG signal acquisition unit 1131 is used to call the three light-emitting diodes of the three-band light-emitting diode array upon receiving the first data acquisition instruction, and use the three bands of light to illuminate the top of the finger of the detection object in turn; and during each irradiation process, the first lens located on the belly of the finger of the detection object converges the light transmitted from the belly of the finger, and the first photodetector on the other side of the first lens performs photoelectric conversion on the converged light to generate a group of PPG signal acquisition data of the corresponding band; and the PPG signal acquisition data corresponding to the three bands are combined into three groups of PPG signal acquisition data and sent to the main control module 111.

Here, the three light-emitting diodes of the three-band light-emitting diode array in the three-band PPG signal acquisition unit 1131 are three infrared light-emitting diodes with light-emitting bands of 650nm infrared band, 940nm near-infrared band and 1050nm near-infrared band respectively. The purpose of collecting three groups of PPG signals in different bands is to improve the analysis accuracy of the PPG signal.

In another specific implementation provided in this embodiment, the ambient light signal acquisition unit 1132 is used to call the second photodetector to perform photoelectric conversion processing on the natural light converged by the second lens when receiving the second data acquisition instruction, and generate ambient light signal acquisition data to send to the main control module 111.

In another specific implementation method provided in this embodiment, the body surface thermal radiation acquisition unit 1133 is used to call the first infrared radiation temperature sensor that is at a first spacing distance from the body surface of the detection object when receiving the third data acquisition instruction, collect the body surface thermal radiation signal of the detection object, and generate body surface thermal radiation acquisition data to send to the main control module 111.

In another specific implementation method provided in this embodiment, the environmental thermal radiation acquisition unit 1134 is used to call a second infrared radiation temperature sensor that is at a second interval distance from the surface of the detection object when receiving a fourth data acquisition instruction, collect the thermal radiation signal of the detection environment, and generate environmental thermal radiation acquisition data to send to the main control module 111; the second interval distance is greater than the first interval distance.

In another specific implementation method provided in this embodiment, the body surface temperature and humidity acquisition unit 1135 is used to call the first temperature and humidity sensor whose distance from the body surface of the detection object is less than the set close distance threshold when receiving the fifth data acquisition instruction, collect the body surface temperature and humidity change signals of the detection object, and generate corresponding body surface temperature acquisition data and body surface humidity acquisition data to send to the main control module 111.

In another specific implementation method provided in this embodiment, the ambient temperature and humidity acquisition unit 1136 is used to call a second temperature and humidity sensor whose distance from the surface of the detection object is greater than a set close distance threshold when receiving the sixth data acquisition instruction, collect the temperature and humidity change signals of the detection environment, and generate corresponding ambient temperature acquisition data and ambient humidity acquisition data to send to the main control module 111.

In another specific implementation provided by this embodiment, the contact conduction heat collection unit 1137 is used to call the thermistor sensor in contact with the body surface of the detection object when receiving the seventh data collection instruction, collect the contact heat conduction signal of the detection object, generate corresponding contact heat conduction collection data and send it to the main control module 111.

(ii) Mobile terminal 12

The mobile terminal 12 is connected to the server 13;

The mobile terminal 12 is used to perform PPG signal display processing on the three sets of PPG signal collection data; the mobile terminal 12 is also used to send the collection data set to the server 13, receive the blood glucose analysis data sent back by the server 13, and perform data display processing on the blood glucose analysis data.

Here, the mobile terminal 12 includes a Bluetooth communication module and a wireless communication module, and the wireless communication module includes a WIFI communication sub-module and a 4G/5G communication sub-module; the mobile terminal 12 is connected to the data acquisition device 11 through the Bluetooth communication module, and is connected to the server 13 through the wireless communication module.

The mobile terminal 12 is also used to provide a blood glucose detection application to the detection subject, and obtain a data acquisition device connection instruction input by the detection subject through the blood glucose detection application; and when receiving the data acquisition device connection instruction, send a connection instruction to the data acquisition device 11 through the Bluetooth communication module; and after successfully connecting to the data acquisition device 11, create a corresponding data channel locally as the third data sending and receiving Bluetooth channel for responsible for data sending and receiving operations between the data acquisition device 11.

The mobile terminal 12 is also used to obtain the start detection instruction input by the detection subject through the blood glucose detection application; and when receiving the start detection instruction, send the detection instruction to the data acquisition device 11 through the third data transmission and reception Bluetooth channel; after the instruction is successfully sent, receive the collection data set sent by the data acquisition device 11 via the third data transmission and reception Bluetooth channel.

The mobile terminal 12 is also used to obtain a stop detection instruction input by the detection subject through the blood glucose detection application program; and upon receiving the stop detection instruction, send a detection termination instruction to the data acquisition device 11 through the third Bluetooth data transmission and reception channel.

In another specific implementation method provided in this embodiment, the mobile terminal 12 is specifically used to extract three groups of PPG signal acquisition data from the acquisition data set to generate corresponding first, second and third PPG signal data, and extract the ambient light signal acquisition data to generate corresponding first natural light signal data during PPG signal display processing; and perform signal difference calculation on the first, second and third PPG signal data according to the first natural light signal data to generate corresponding first, second and third differential signal data; and downsample and filter the first, second and third differential signal data to generate corresponding first, second and third filtered signal data; and divide the corresponding display area on the terminal display interface to display the first, second and third filtered signal data as continuous waveforms.

Optionally, the mobile terminal 12 is also used to perform statistics on the signal-to-noise ratios of the first, second and third filtered signal data to generate corresponding first, second and third signal-to-noise ratios when displaying the first, second and third filtered signal data in continuous waveforms; when any of the signal-to-noise ratios does not meet the set normal signal-to-noise ratio range, stop the ongoing continuous waveform display and send a detection termination instruction to the data acquisition device 11.

Optionally, the mobile terminal 12 is further configured to provide a prompt indicating that the battery power of the device is low to the detection object upon receiving the low battery power information sent by the data acquisition device 11 .

Optionally, when the mobile terminal 12 receives the acquisition error information sent by the data acquisition device 11, it prompts the detection object to terminate the acquisition due to the acquisition error.

Optionally, the mobile terminal 12 is also used to receive the blood oxygen saturation analysis data and the pulse rate analysis data sent back by the server 13, and perform data display processing on the blood oxygen saturation analysis data and the pulse rate analysis data.

(III) Server 13

The server 13 is used to perform blood sugar analysis according to the collected data set to generate blood sugar analysis data, and send the blood sugar analysis data to the mobile terminal 12 .

In another specific implementation provided by this embodiment, the server 13 is specifically used to extract three groups of PPG signal collection data, ambient light signal collection data, body surface thermal radiation collection data, ambient thermal radiation collection data, body surface temperature collection data, body surface humidity collection data, ambient temperature collection data, ambient humidity collection data and contact heat conduction collection data from the collection data set when performing blood glucose analysis according to the collection data set;

The DC signal features and AC signal features of the three groups of PPG signal acquisition data are extracted respectively, and the extracted features are normalized to obtain three groups of PPG feature data, each group of PPG feature data includes a pair of DC feature data and AC feature data;

And extract corresponding characteristic fragments from the ambient light signal acquisition data, body surface thermal radiation acquisition data, environmental thermal radiation acquisition data, body surface temperature acquisition data, body surface humidity acquisition data, environmental temperature acquisition data, environmental humidity acquisition data and contact heat conduction acquisition data, respectively, calculate the signal or data average value of each characteristic fragment, and perform normalization processing on each signal or data average value, and use the processing results as the corresponding ambient light characteristic data, body surface thermal radiation characteristic data, environmental thermal radiation characteristic data, body surface temperature characteristic data, body surface humidity characteristic data, environmental temperature characteristic data, environmental humidity characteristic data and contact heat conduction characteristic data; and according to the input vector structure of the preset artificial intelligence blood glucose analysis model, merge all the above characteristic data into a characteristic vector;

The feature vector is input into the artificial intelligence blood glucose analysis model to perform blood glucose analysis, thereby obtaining corresponding blood glucose analysis data.

Here, based on the well-known Beer-Lambert law, we know that the absorbance of the solution to the transmitted light is related to the solute concentration, and further, we know that the higher the glucose concentration in the blood, the smaller the light intensity that passes through the human tissue. Then, by analyzing the PPG characteristic data, we can observe the changes in blood sugar; based on the Metabolic Heat Conformation (MHC) theory, we know that the energy rhythm of the human body at different times has a certain correlation with the energy released after human metabolism, and the energy generated by glucose oxidation can be dissipated from the human body to the environment in the form of heat energy. Therefore, the human body's metabolic heat is related to the glucose level and oxygen supply. That is to say, under the condition of guaranteed oxygen supply, the human body's metabolic heat can be used as a reference to observe the changes in blood sugar based on the metabolic heat conformation theory. The artificial intelligence blood sugar analysis model is implemented based on the Beer-Lambert law and the metabolic heat conformation theory. The neural network structure of the model is similar to the multilayer perceptron (MLP) neural network, and the output of the model is actually a predicted blood sugar fluctuation value. After obtaining the predicted blood sugar fluctuation value, the server 13 obtains the calibrated blood sugar value corresponding to the test object from the preset calibration database, and obtains the final blood sugar analysis data by the calculation method of calibrated blood sugar value + blood sugar fluctuation value = blood sugar analysis data. The calibrated blood sugar value stored in the calibration database here is the measured blood sugar value of the test object obtained using a conventional blood sugar measurement method.

Optionally, the server 13 is also used to perform blood oxygen saturation analysis based on the three groups of PPG signal collection data and ambient light signal collection data in the collection data set to obtain corresponding blood oxygen saturation analysis data, perform pulse wave frequency analysis to obtain corresponding pulse rate analysis data, and send the blood oxygen saturation analysis data and pulse rate analysis data to the mobile terminal 12.

It should be noted that it should be understood that the division of the various modules of the above system is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And these modules can all be implemented in the form of software called by processing elements; they can also be all implemented in the form of hardware; some modules can also be implemented in the form of software called by processing elements, and some modules can be implemented in the form of hardware. For example, the acquisition module can be a separately established processing element, or it can be integrated in a certain chip of the above system. In addition, it can also be stored in the memory of the above system in the form of program code, and called and executed by a certain processing element of the above system. The implementation of other modules is similar. In addition, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, the various steps of the above system or the above modules can be completed by the hardware integrated logic circuit in the processor element or the instructions in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above system processing steps, such as: one or more application specific integrated circuits (ASIC), or one or more digital signal processors (DSP), or one or more field programmable gate arrays (FPGA). For another example, when a certain module above is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in accordance with the embodiment of the present invention is generated in whole or in part. The above computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The above computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the above computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, Bluetooth, microwave, etc.) mode to another website site, computer, server or data center. The above computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, data center, etc. that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

The embodiment of the present invention provides a non-invasive blood glucose analysis system, which includes: a data acquisition device, a mobile terminal and a server; the data acquisition device is used to collect three-band PPG signals, contact heat conduction signals, body surface thermal radiation signals, body surface temperature and humidity data of the detection object, as well as the ambient light signal, ambient thermal radiation signal and ambient temperature and humidity data of the detection environment; the mobile terminal is used to display the PPG signal and synchronously transmit the collected data to the server for data analysis related to blood glucose, and display the analysis results. Through the system of the present invention, a convenient non-invasive blood glucose analysis method is provided for users, which reduces the difficulty of user detection and improves user experience.

The professionals should further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims (4)

1. A non-invasive blood glucose analysis system, the system comprising: data acquisition equipment, a mobile terminal and a server;

The data acquisition equipment is connected with the mobile terminal; the data acquisition equipment comprises a main control module, a signal lamp module, a data acquisition module, a Bluetooth communication module and a battery management module; the main control module is respectively connected with the signal lamp module, the data acquisition module, the Bluetooth communication module and the battery management module; the main control module is used for performing equipment self-checking treatment on each module when the equipment is started; the main control module is also used for managing the electric quantity of the equipment through the battery management module when the preset equipment state is a normal working state; the main control module is also used for performing active Bluetooth connection processing through the Bluetooth communication module when the equipment state is a normal working state; the main control module is also used for carrying out passive Bluetooth connection processing through the Bluetooth communication module when the equipment state is in a normal working state and a connection request sent by the mobile terminal is received; the main control module is also used for carrying out data acquisition on the detection object and the detection environment through the data acquisition module to generate an acquisition data set when the preset detection activation state is the activated state, and sending the acquisition data set to the mobile terminal through the Bluetooth communication module; the acquisition data set comprises three groups of PPG signal acquisition data, environment light signal acquisition data, body surface thermal radiation acquisition data, environment thermal radiation acquisition data, body surface temperature acquisition data, body surface humidity acquisition data, environment temperature acquisition data, environment humidity acquisition data and contact heat conduction acquisition data;

The mobile terminal is connected with the server; the mobile terminal is used for carrying out PPG signal display processing on the three groups of PPG signal acquisition data; the mobile terminal is also used for sending the acquired data set to the server, receiving blood glucose analysis data returned by the server and carrying out data display processing on the blood glucose analysis data;

the server is used for carrying out blood glucose analysis according to the acquired data set to generate blood glucose analysis data, and sending the blood glucose analysis data to the mobile terminal;

The main control module is specifically configured to set a preset device state to a starting state when performing device self-checking processing on each module; performing system parameter self-checking processing on preset system parameters stored in the main control module to generate a first self-checking state; performing signal lamp function self-checking processing on the signal lamp module to generate a second self-checking state; performing self-checking processing on the subunit devices to the data acquisition module to generate a third self-checking state; performing Bluetooth module self-checking processing on the Bluetooth communication module to generate a fourth self-checking state; judging whether the first self-checking state, the second self-checking state, the third self-checking state and the fourth self-checking state are all self-checking success or not; if the self-checking is successful, setting the equipment state to be a normal working state; if the self-checking is not successful, setting the equipment state as a fault state; when the equipment state is in a normal working state, setting the signal lamp display color of the signal lamp module to be a preset first color; when the equipment state is equipment self-checking failure, setting the signal lamp display color of the signal lamp module to be a preset second color;

the main control module is specifically configured to periodically obtain a remaining battery power from the battery management module according to a preset power check frequency when the battery management module performs power management on the device; when the residual battery power is not lower than a preset normal working power threshold, setting the signal lamp display color of the signal lamp module to be a preset first color; when the residual battery power is lower than the normal working power threshold, setting the equipment state to be a power shortage state;

The main control module is specifically configured to record the mobile terminal corresponding to preset bluetooth pairing terminal information as a target terminal and scan the target terminal when the active bluetooth connection is performed through the bluetooth communication module; if the target terminal is found by scanning, performing first Bluetooth pairing processing with the target terminal; if the first Bluetooth pairing process is successful, a first data receiving and transmitting Bluetooth channel corresponding to the target terminal is created, and the signal lamp display color of the signal lamp module is set to be a preset third color;

The data acquisition equipment is specifically used for performing second Bluetooth pairing processing with the mobile terminal when the passive Bluetooth connection processing is performed through the Bluetooth communication module; if the second Bluetooth pairing process is successful, a second data receiving and transmitting Bluetooth channel corresponding to the mobile terminal is created, and the signal lamp display color of the signal lamp module is set to be a preset third color;

The data acquisition module comprises a three-band PPG signal acquisition unit, an ambient light signal acquisition unit, a body surface heat radiation acquisition unit, an ambient heat radiation acquisition unit, a body surface temperature and humidity acquisition unit, an ambient temperature and humidity acquisition unit and a contact conduction heat acquisition unit; each acquisition unit of the data acquisition module is connected with the main control module respectively;

the device of the three-band PPG signal acquisition unit specifically comprises a three-band light emitting diode array, a first lens and a first photoelectric detector; the device of the three-band light-emitting diode array comprises three light-emitting diodes with bands;

The device of the ambient light signal acquisition unit specifically comprises a second lens and a second photoelectric detector;

The device of the body surface heat radiation acquisition unit is specifically a first infrared radiation temperature sensor;

the device of the environmental heat radiation acquisition unit is specifically a second infrared radiation temperature sensor;

the device of the body surface temperature and humidity acquisition unit is specifically a first temperature and humidity sensor;

The device of the environment temperature and humidity acquisition unit is specifically a second temperature and humidity sensor;

The device of the contact conduction heat collection unit is specifically a thermistor sensor;

The main control module is also used for carrying out switching management on the detection activation state, and specifically comprises the following steps: setting the detection activation state to be a disconnection state when connection with the mobile terminal is not established yet; setting the detection activation state to be an inactive state when connection is established with the mobile terminal; when a detection instruction sent by the mobile terminal is received, setting the detection activation state as an activated state; when the detection activation state is an activated state, immediately starting a data acquisition processing flow for a detection object and a detection environment to obtain an acquisition data set comprising the three groups of PPG signal acquisition data, the environment light signal acquisition data, the body surface heat radiation acquisition data, the environment heat radiation acquisition data, the body surface temperature acquisition data, the body surface humidity acquisition data, the environment temperature acquisition data, the environment humidity acquisition data and the contact heat conduction acquisition data, and transmitting the acquisition data set to the mobile terminal; stopping the data acquisition processing in progress and modifying the detection activation state into an deactivation state when a detection suspension instruction sent by the mobile terminal is received;

The main control module is also used for starting data acquisition processing after confirming that the detection object sends the finger to the appointed mechanical part of the equipment when the detection activation state is the activated state; the main control module is specifically configured to record the acquired data output by the three-band PPG signal acquisition unit as first acquired data when confirming whether the detected object has sent a finger to a designated mechanical part of the device; continuously segmenting the first acquired data according to a preset time interval to obtain a plurality of first segmented data; and carrying out average light intensity calculation on each first segment data to generate corresponding first segment light intensity data; and performing difference calculation on the adjacent first segment light intensity data to generate a corresponding first light intensity difference value = previous first segment light intensity data-next first segment light intensity data; if the first light intensity difference value is positive and is larger than a first set light intensity threshold value, confirming that the detection object has sent the finger to the designated mechanical part of the equipment;

The main control module is also used for stopping the ongoing data acquisition processing after confirming that the finger of the detection object is moved away from the appointed mechanical part of the equipment when the detection activation state is the activated state, modifying the detection activation state into the unactivated state and sending acquisition error information to the mobile terminal; the main control module is specifically configured to record the acquired data output by the three-band PPG signal acquisition unit as second acquired data when determining whether the detection object has moved the finger away from the designated mechanical part of the device; continuously segmenting the second acquired data according to a preset time interval to obtain a plurality of second segmented data; and carrying out average light intensity calculation on each second sectional data to generate corresponding second sectional light intensity data; and performing difference calculation on the adjacent second segment light intensity data to generate a corresponding second light intensity difference value = previous second segment light intensity data-next second segment light intensity data; and if the second light intensity difference value is negative and smaller than a second set light intensity threshold value, confirming that the detection object has moved the finger away from the designated mechanical part of the device.

2. The non-invasive blood glucose analysis system according to claim 1, wherein,

The main control module is specifically configured to send corresponding data acquisition instructions to the three-band PPG signal acquisition unit, the ambient light signal acquisition unit, the body surface thermal radiation acquisition unit, the ambient thermal radiation acquisition unit, the body surface temperature and humidity acquisition unit, the ambient temperature and humidity acquisition unit and the contact conduction thermal acquisition unit when the data acquisition is performed on the detection object and the detection environment through the data acquisition module; and receiving the collected data returned by each collecting unit to form the collected data set.

3. The non-invasive blood glucose analysis system according to claim 2, wherein,

The three-band PPG signal acquisition unit is used for calling three light emitting diodes of the three-band light emitting diode array when receiving a first data acquisition instruction, and sequentially using the light rays of the three bands to irradiate the top of the finger of the detection object; in each irradiation process, converging the transmitted light rays of the abdomen of the finger through the first lens positioned on the abdomen of the finger of the detection object, and performing photoelectric conversion on the converged light rays through the first photoelectric detector on the other side of the first lens to generate a group of PPG signal acquisition data of corresponding wave bands; the PPG signal acquisition data corresponding to the three wave bands are formed into three groups of PPG signal acquisition data, and the three groups of PPG signal acquisition data are sent to the main control module;

The environment light signal acquisition unit is used for calling the second photoelectric detector to perform photoelectric conversion processing on natural light converged by the second lens when receiving a second data acquisition instruction, generating environment light signal acquisition data and sending the environment light signal acquisition data to the main control module;

The body surface thermal radiation acquisition unit is used for calling the first infrared radiation temperature sensor with a first interval distance from the body surface of the detection object to acquire body surface thermal radiation signals of the detection object when receiving a third data acquisition instruction, generating the body surface thermal radiation acquisition data and transmitting the body surface thermal radiation acquisition data to the main control module;

The environment thermal radiation acquisition unit is used for calling the second infrared radiation temperature sensor with a second interval distance from the body surface of the detection object to acquire thermal radiation signals of the detection environment when receiving a fourth data acquisition instruction, generating environment thermal radiation acquisition data and transmitting the environment thermal radiation acquisition data to the main control module; the second separation distance is greater than the first separation distance;

The body surface temperature and humidity acquisition unit is used for calling the first temperature and humidity sensor with the body surface distance smaller than a set short-distance threshold value to acquire body surface temperature and humidity change signals of the detection object when receiving a fifth data acquisition instruction, generating corresponding body surface temperature acquisition data and body surface humidity acquisition data and sending the corresponding body surface temperature acquisition data and the body surface humidity acquisition data to the main control module;

The environment temperature and humidity acquisition unit is used for calling the second temperature and humidity sensor with the body surface distance of the detection object larger than a set short-distance threshold value to acquire temperature and humidity change signals of the detection environment when receiving a sixth data acquisition instruction, generating corresponding environment temperature acquisition data and environment humidity acquisition data and sending the corresponding environment temperature acquisition data and the corresponding environment humidity acquisition data to the main control module;

and the contact heat conduction acquisition unit is used for calling the thermistor sensor in contact with the body surface of the detection object to acquire a contact heat conduction signal of the detection object when receiving a seventh data acquisition instruction, generating corresponding contact heat conduction acquisition data and transmitting the corresponding contact heat conduction acquisition data to the main control module.

4. The non-invasive blood glucose analysis system according to claim 1, wherein,

The three wave bands are specifically 650nm infrared band, 940nm near infrared band and 1050nm near infrared band.