CN111275956A - Physiological data ultra-low power consumption acquisition system - Google Patents
Physiological data ultra-low power consumption acquisition system Download PDFInfo
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Abstract
An ultra-low power consumption acquisition system of physiological data comprises a power management module, a data acquisition module and a data acquisition module, wherein the power management module has a time sequence power supply function and is used for managing power supply and supplying power to other modules according to time sequence management; a timer for generating a timing signal; the sensing acquisition module is used for acquiring physiological data of an organism; the filtering and resisting module is used for receiving the acquired data sent by the sensing and acquiring module; and the filtering and blocking module is also operated with a filtering processing program for filtering and blocking the interference signal. The processor is used for processing the acquired data sent by the filtering resistance module; on the other hand, the physiological data ultra-low power consumption acquisition system is controlled to enter a dormant, low-power consumption or normal working mode; the storage module is used for receiving and storing the acquired data sent by the processor; and the communication module is used for receiving the awakening instruction and the data sent by the processor and sending the data to a third party. The power consumption can be reduced to the maximum extent, and the cruising ability is improved.
Description
Technical Field
The application belongs to the field of computers, and particularly relates to an ultralow-power-consumption physiological data acquisition system.
Background
The portable acquisition of the physiological data is a necessary way for acquiring and analyzing the health big data, and the low power consumption and long endurance have no significance to the portable acquisition equipment of the physiological data. Because the physiological signal has the characteristics of weak amplitude, high possibility of interference, large data volume and the like, the conventional physiological data acquisition device and method greatly influence the endurance of the portable physiological data acquisition equipment due to power consumption on the premise of ensuring necessary data acquisition frequency, and the poor endurance further hinders the enthusiasm of a user for wearing the acquisition equipment. There is therefore a need for an ultra low power consumption physiological data acquisition system.
Disclosure of Invention
The invention provides an ultra-low power consumption physiological data acquisition system, which aims to solve the technical problems of high power consumption and poor cruising ability of the conventional physiological data acquisition equipment, and achieves the effects of reducing power consumption and improving cruising ability on the premise of ensuring the portable acquisition frequency of physiological data.
The specific technical scheme of the invention is as follows:
an ultra-low power physiological data acquisition system comprising:
the power management module has a time sequence power supply function and is used for managing power supply and supplying power to other modules according to time sequence management;
the timer is connected with the power management module through a line and used for generating a timing signal;
the sensing acquisition module is connected with the power management module through a circuit and is used for acquiring physiological data of organisms;
the filtering resistance module is connected with the power management module through a circuit, connected with the sensing acquisition module and used for receiving acquisition data sent by the sensing acquisition module;
the processor is connected with the power management module through a circuit, is respectively in communication connection with the timer and the resistance filtering module, and is used for processing the acquired data sent by the resistance filtering module; on the other hand, the physiological data ultra-low power consumption acquisition system is controlled to enter a dormant, low-power consumption or normal working mode;
the storage module is connected with the power management module through a circuit, is in communication connection with the processor, and is used for receiving and storing the acquired data sent by the processor;
and the communication module is connected with the power management module through a line, is in communication connection with the processor, and is used for receiving the awakening instruction and the data sent by the processor and sending the data to a third party.
Furthermore, a filtering processing program is also operated on the filtering and blocking module and is used for filtering and blocking the interference signals.
Further, the specific management process of the power management module for managing power supply is as follows:
A. the power management module is used for supplying power to the timer and the processor in a normalized mode; the time sequence supplies power to the sensing acquisition module, the resistance filtering module, the storage module and the communication module, and a time sequence signal is provided by the timer;
B. setting a sampling period of the sensing data by the timer
Timing
When the time is up, the timer sends a time sequence signal to the power management module, and the power management module supplies power to the sensing acquisition module and the resistance filtering module; the timer is also provided with a window period
Timing
When the time arrives, the power management module stops supplying power to the sensing acquisition module and the resistance filtering module, and the power management module supplies power to the sensing acquisition module and the resistance filtering module in a power supply window period
If the sensing acquisition module and the resistance filtering module have unprocessed data, the data are forcibly abandoned;
C. when the processor needs to send storage data to the storage module, the processor firstly sends a storage starting instruction to the timer, the timer sends a storage timing sequence instruction to the power management module, the power management module supplies power to the storage module, the processor receives the storage finishing instruction sent by the storage module and then sends the storage finishing instruction to the timer, the timer sends the storage finishing timing sequence instruction to the power management module, and the power management module stops supplying power to the storage module;
D. when the processor needs to send data to the communication module, the processor sends a communication transmission starting instruction to the timer, the timer sends a communication transmission time sequence instruction to the power management module, the power management module supplies power to the communication module, the processor receives the communication completion instruction sent by the communication module and then sends the communication completion instruction to the timer, the timer sends a communication completion time sequence instruction to the power management module, and the power management module stops supplying power to the communication module.
Further, the filtering module performs filtering processing on the acquired data, and the specific processing steps are as follows:
s1, setting the acquired physiological signals as
And n is a discrete time domain, and the signals are subjected to differential processing through finite impulse response:
wherein the content of the first and second substances,
is a unit impulse response, i.e. filter coefficient, representing a convolution operation; and performing z-transfer transformation on the above formula to obtain a frequency response equation:
wherein the content of the first and second substances,
the frequency characteristics are reflected in the frequency characteristics,
is a system function, N is the length of the unit impulse response,
is a signal
The transfer transformation of (1);
s2, constructing a band-stop digital filter according to a frequency response equation;
the sampling frequency is 200Hz, the pass bands are required to be arranged at the corresponding frequency points of 0Hz, 50Hz and 100Hz, and the center frequencies of the pass bands of the three points are respectively arranged at
A part is arranged,
A part is arranged,
Is arranged at
Is arranged at
Poles, and thus the frequency response equation, is:
the amplitude lim of the frequency response is:
the transfer function and frequency response of the all-pass filter are:
and
and obtaining a band elimination filter:
therefore, the band-stop filtering processing of the signals is realized.
The technical scheme at least has the following beneficial effects:
1. the power supply management mode can ensure that the system can maintain the minimum system state all the time in the data acquisition, processing, storage and communication processes to the maximum extent, and redundant modules can not waste energy consumption.
2. By setting window periods
The time-sequence power supply management is carried out in the mode, so that waiting energy consumption can be prevented when the system is busy, and the energy consumption in the data acquisition and processing process is further reduced.
3. By adopting filtering processing, the physiological data acquisition system in a dormant state can be prevented from being awakened by processing interference signals such as power frequency interference, myoelectric interference and the like, the awakening frequency of the physiological data acquisition system is greatly reduced, and the energy consumption of the system is reduced.
Drawings
FIG. 1 is a block diagram of an ultra-low power physiological data acquisition system according to the present invention;
fig. 2 is a block diagram of the band-stop filter according to the present invention.
Detailed Description
The technical scheme of the invention is explained in detail by combining the drawings and the embodiments in the specification:
referring to fig. 1, the ultra-low power consumption physiological data acquisition system according to the present invention includes the following components:
the system comprises a power management module 10, a timer 20, a sensing acquisition module 30, a resistance filtering module 40, a processor 50, a storage module 60 and a communication module 70.
The power management module 10 has a time sequence power supply function, and is configured to manage power supply and manage power supply to other modules according to a time sequence. The power management module 10 is connected to a timer 20 via a bus.
The timer 20 is configured to generate a timing signal and send the timing signal to the power management module 10 and the processor 50, and the timer 20 and the processor 50 are connected through a bus.
The sensing and collecting module 30 is mainly used for collecting physiological data of an organism and is composed of one or more physiological data collecting sensors. The sensing and collecting module 30 is connected with a filtering resistance module 40 through a bus.
The filtering resistance module 40 is configured to receive the acquired data sent by the sensing acquisition module 30; on the other hand, the filtering and blocking module 40 runs a filtering processing program for filtering and blocking interference signals such as myoelectric interference, power frequency interference and the like, so that the physiological data acquisition system in a dormant state can be prevented from being awakened by processing the interference signals, and the awakening frequency of the physiological data acquisition system is greatly reduced. The filter resistance module 40 is connected to the processor 50 via a data bus.
The processor 50 runs an ultra-low power consumption physiological data processing program, and on one hand, is used for processing the collected data sent by the filtering resistance module 40; on the other hand, the physiological data ultra-low power consumption acquisition system is controlled to enter a dormant, low power consumption or normal working mode. The processor 50 is connected to a memory module 60 and a communication module 70 via a data bus.
The storage module 60 is configured to receive and store the acquired data sent by the processor 50.
The communication module 70 is configured to receive the wake-up command and the data sent by the processor 50, and send the data to a third party.
The power supply circuit in the system manages the power supply of each module in the system through the power management module 10, and the specific management process is as follows:
A. the power management module 10 normalizes power supply to the timer 20 and the processor 50; the time sequence supplies power to the sensing acquisition module 30, the resistance filtering module 40, the storage module 60 and the communication module 70, and the time sequence signal is provided by the timer 20.
B. Setting the sampling period of the sensing data by the timer 20
Timing
At the moment, the timer 20 sends a timing signal to the power management module 10, and the power management module 10 supplies power to the sensing acquisition module 30 and the resistance filtering module 40. The timer 20 is further provided with a window period
Timing
At the moment, the power management module 10 will stop supplying power to the sensing acquisition module 30 and the resistance filtering module 40, and within a power supply window period
In addition, if the sensing and collecting module 30 and the filtering and resistance module 40 still have data that has not been processed, the data is forced to be discarded. The time-series power supply management is carried out by adopting a mode of setting a window period, so that waiting energy consumption can be prevented when the system is busy, and the energy consumption in the data acquisition and processing process is further reduced.
C. When the processor 50 needs to send the storage data to the storage module 60, the processor 50 first sends a storage starting instruction to the timer 20, the timer 20 sends a storage timing sequence instruction to the power management module 10, the power management module 10 supplies power to the storage module 60, after receiving the storage completion instruction sent by the storage module 60, the processor 50 sends the storage completion instruction to the timer 20, the timer 20 sends the storage completion timing sequence instruction to the power management module 10, and the power management module 10 stops supplying power to the storage module 60.
D. When the processor 50 needs to send data to the communication module 70, the processor 50 first sends a communication transmission starting instruction to the timer 20, the timer 20 sends a communication transmission timing instruction to the power management module 10, the power management module 10 supplies power to the communication module 70, after receiving the communication completion instruction sent by the communication module 70, the processor 50 sends a communication completion instruction to the timer 20, the timer 20 sends a communication completion timing instruction to the power management module 10, and the power management module 10 stops supplying power to the communication module 70.
By adopting the power supply management processing, the minimum system state of the system can be ensured to be maintained all the time in the data acquisition, processing, storage and communication processes, and no redundant module wastes energy.
When power management module 10 supplies power to sensing collection module 30 and filtering resistance module 40, the physiological data of sensing collection module 30 perception organism, receive power frequency interference easily because of physiological data gathers, the flesh electricity is disturbed, awaken the physiological data collection system who is in the dormant state for the processing that prevents interference signal, greatly reduced physiological data collection system's awakening frequency, the physiological data of sensing collection module 30 perception sends earlier for filtering resistance module 40, filtering resistance module 40 carries out filtering treatment to the data of gathering, the processing procedure is as follows:
s1, setting the acquired physiological signals as
And n is a discrete time domain, and the signals are subjected to differential processing through finite impulse response:
wherein Y (n) represents the result of the difference processing of the finite impulse response signal x,
is the unit impulse response, i.e. the filter coefficients, representing the convolution operation. And performing z-transfer transformation on the above formula to obtain a frequency response equation:
wherein the content of the first and second substances,
the frequency characteristics are reflected in the frequency characteristics,
is a system function, N is the length of the unit impulse response,
is a signal
The transfer of (1).
And S2, constructing a band-stop digital filter according to a frequency response equation.
As shown in FIG. 2, the band elimination filter in this embodiment is designed to filter out the electromyographic interference signals with frequency components lower than 0.5Hz and the power frequency interference signals with frequency components lower than 50 Hz. The sampling frequency is 200Hz, the pass bands are required to be arranged at the corresponding frequency points of 0Hz, 50Hz and 100Hz, and the center frequencies of the pass bands of the three points are respectively arranged at
A part is arranged,
A part is arranged,
Is arranged at
Is arranged at
Poles, and thus the bandpass frequency response equation, is:
the amplitude lim of the frequency response is:
the transfer function and frequency response of the all-pass filter are:
and
and obtaining a band elimination filter:
wherein
Which represents the all-pass filtering process performed on the signal x.
The band-pass filtering process is performed on the signal x, and y (n) represents the result of the band-stop filtering process. Therefore, the band-stop filtering processing of the signals is realized.
By adopting the filtering processing, the physiological data acquisition system in a dormant state can be awakened by processing interference signals such as power frequency interference, myoelectric interference and the like, so that the awakening frequency of the physiological data acquisition system is greatly reduced, and the energy consumption of the system is reduced.
The signal data filtered by the resistance filtering module 40 is sent to the processor 50 by the resistance filtering module 40, the processor 50 enters a normal working mode of high-master-frequency processing, the received signal data is processed and packaged, and then a storage instruction or a communication transmission instruction is sent to the timer 20 according to the requirement of storage or communication transmission, the timer 20 sends a storage time sequence instruction or a communication transmission time sequence instruction to the power management module 10, the power management module 10 supplies power to the storage module 60 or the communication module 70 to start storage or communication transmission, when the storage is finished or the communication transmission is finished, the processor 50 sends a storage completion instruction or a communication transmission completion instruction to the timer 20, the timer 20 sends the storage completion time sequence instruction or the communication transmission completion time sequence instruction to the power management module 10, the power management module 10 stops supplying power to the storage module 60 or the communication module 70, the processor 50 enters a sleep state.
When timing
At the moment, the power management module 10 will stop supplying power to the sensing acquisition module 30 and the resistance filtering module 40, and within a power supply window period
In addition, if the sensing collection module 30 and the resistance filtering module 40 still have data that has not been processed, the data is forcibly discarded and is not sent to the processor 50, and the processor 50 is still in a sleep state.
In conclusion, the physiological data ultra-low power consumption acquisition system is realized.
It should be understood that the above-mentioned are only preferred embodiments of the present invention, and are not intended to limit the present invention, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present application.
Claims (4)
1. An ultra-low power consumption physiological data acquisition system, comprising:
the power management module (10), the said power management module (10), have the power supply function of the time series, is used for managing the power supply, and manage the power supply to other modules according to the time series;
the timer (20) is connected with the power management module (10) through a line and used for generating a timing signal;
the sensing acquisition module (30) is connected with the power management module (10) through a circuit and is used for acquiring physiological data of organisms;
the filtering resistance module (40) is connected with the power management module (10) through a circuit, connected with the sensing acquisition module (30) and used for receiving acquisition data sent by the sensing acquisition module (30);
the processor (50) is connected with the power management module (10) through a circuit, is respectively in communication connection with the timer (20) and the resistance filtering module (40), and is used for processing the acquired data sent by the resistance filtering module (40); on the other hand, the physiological data ultra-low power consumption acquisition system is controlled to enter a dormant, low-power consumption or normal working mode;
the storage module (60) is connected with the power management module (10) through a line, is in communication connection with the processor (50), and is used for receiving and storing the acquired data sent by the processor (50);
and the communication module (70) is connected with the power management module (10) through a line, is in communication connection with the processor (50), and is used for receiving the wake-up instruction and the data sent by the processor (50) and sending the data to a third party.
2. The physiological data ultra-low power acquisition system according to claim 1, wherein the filtering and blocking module (40) further runs a filtering processing program for filtering and blocking the interference signal.
3. The physiological data ultra-low power acquisition system according to claim 1, wherein the power management module (10) manages power supply by the following specific management process:
A. the power management module (10) is used for normalizing power supply to the timer (20) and the processor (50); the time sequence supplies power to the sensing acquisition module (30), the resistance filtering module (40), the storage module (60) and the communication module (70), and the time sequence signal is provided by the timer (20);
B. setting a sampling period of the sensing data by the timer (20)
Timing
When the time is up, the timer (20) sends a time sequence signal to the power management module (10), and the power management module (10) supplies power to the sensing acquisition module (30) and the resistance filtering module (40); the timer (20) is further provided with a window period
Timing
When the time arrives, the power management module (10) stops supplying power to the sensing acquisition module (30) and the filtering resistance module (40), and a power supply window period is completed
If the sensing acquisition module (30) and the resistance filtering module (40) have unprocessed data, the data are forcibly abandoned;
C. when the processor (50) needs to send storage data to the storage module (60), the processor (50) firstly sends a storage starting instruction to the timer (20), the timer (20) sends a storage timing instruction to the power management module (10), the power management module (10) supplies power to the storage module (60), the processor (50) receives the storage completion instruction sent by the storage module (60) and then sends the storage completion instruction to the timer (20), the timer (20) sends the storage completion timing instruction to the power management module (10), and the power management module (10) stops supplying power to the storage module (60);
D. when the processor (50) needs to send data to the communication module (70), the processor (50) firstly sends a communication transmission starting instruction to the timer (20), the timer (20) sends a communication transmission timing sequence instruction to the power management module (10), the power management module (10) supplies power to the communication module (70), the processor (50) receives the communication completion instruction sent by the communication module (70) and then sends a communication completion instruction to the timer (20), the timer (20) sends a communication completion timing sequence instruction to the power management module (10), and the power management module (10) stops supplying power to the communication module (70).
4. The ultra-low power consumption physiological data acquisition system according to claim 2, wherein the filtering and blocking module (40) performs filtering processing on the acquired data, and the processing steps are as follows:
s1, setting the acquired physiological signals as
And n is a discrete time domain, and the signals are subjected to differential processing through finite impulse response:
wherein the content of the first and second substances,
is a unit impulse response, i.e. filter coefficient, representing a convolution operation; and performing z-transfer transformation on the above formula to obtain a frequency response equation:
wherein the content of the first and second substances,
the frequency characteristics are reflected in the frequency characteristics,
is a system function, N is the length of the unit impulse response,
is a signal
The transfer transformation of (1);
s2, constructing a band-stop digital filter according to a frequency response equation;
the sampling frequency is 200Hz, the pass bands are required to be arranged at the corresponding frequency points of 0Hz, 50Hz and 100Hz, and the center frequencies of the pass bands of the three points are respectively arranged at
A part is arranged,
A part is arranged,
Is arranged at
Is arranged at
Poles, and thus the frequency response equation, is:
the amplitude lim of the frequency response is:
the transfer function and frequency response of the all-pass filter are:
and
and obtaining a band elimination filter:
therefore, the band-stop filtering processing of the signals is realized.
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| CN202010369798.2A CN111275956B (en) | 2020-05-06 | 2020-05-06 | Physiological data ultra-low power consumption acquisition system |
| CN202010918415.2A CN112002119B (en) | 2020-05-06 | 2020-05-06 | Physiological data ultra-low power consumption acquisition system |
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| CN113453093A (en) * | 2021-06-24 | 2021-09-28 | 广东宏石激光技术股份有限公司 | Data transmission system and data transmission method for laser cutting machine |
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| CN114061652A (en) * | 2021-09-29 | 2022-02-18 | 清华大学 | Drain pipe network monitoring facilities |
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| CN108597619B (en) * | 2018-04-26 | 2019-05-17 | 北京大医同盟健康管理有限责任公司 | Based on distributed intelligence body temperature monitoring management system |
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| CN101419443A (en) * | 2008-12-12 | 2009-04-29 | 广州杰赛科技股份有限公司 | Data acquisition and monitor control system terminal acquisition equipment |
| CN104922890A (en) * | 2015-07-06 | 2015-09-23 | 王继军 | Intelligent exercise protection device |
| US9986314B1 (en) * | 2016-11-22 | 2018-05-29 | General Electric Company | System and method for controlling authentication of a physiological acquistion device by a patient monitor |
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| CN112002119A (en) | 2020-11-27 |
| CN111275956B (en) | 2020-09-29 |
| CN112002119B (en) | 2021-06-11 |
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