CN112494056A - Myoelectricity acquisition system for clothes - Google Patents
Myoelectricity acquisition system for clothes Download PDFInfo
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- CN112494056A CN112494056A CN202011499181.9A CN202011499181A CN112494056A CN 112494056 A CN112494056 A CN 112494056A CN 202011499181 A CN202011499181 A CN 202011499181A CN 112494056 A CN112494056 A CN 112494056A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 230000003183 myoelectrical effect Effects 0.000 claims abstract description 14
- 238000013500 data storage Methods 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 230000003321 amplification Effects 0.000 claims abstract description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
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- 230000007613 environmental effect Effects 0.000 description 2
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- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 210000003205 muscle Anatomy 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/725—Details of waveform analysis using specific filters therefor, e.g. Kalman or adaptive filters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0204—Operational features of power management
- A61B2560/0214—Operational features of power management of power generation or supply
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Abstract
The invention relates to the technical field of human body bioelectricity signal acquisition and discloses a myoelectricity acquisition system for clothes, which comprises a myoelectricity sensing module, a simulation front end, a core board central control module, a state display module, an upper computer module, a lithium battery module, a current limiting chip module and a right leg driving circuit module, wherein the myoelectricity sensing module is connected with the simulation front end; the analog front end comprises a differential amplification unit, a filtering unit and an AD conversion unit; the core board central control module comprises a data storage unit, a data processing unit and an electric quantity monitoring unit; the AD conversion unit is in circuit connection with the right leg driving circuit module; the electric quantity monitoring module is in circuit connection with the current limiting chip, and the central control module of the core board is in Bluetooth connection with the upper computer module; the core board central control module is in circuit connection with the state display module; the myoelectric signal collecting device is convenient to carry, can be suitable for various application scenes, is not easy to interfere in the myoelectric signal collecting process, and is beneficial to ensuring the integrity of the myoelectric signal collection.
Description
Technical Field
The invention relates to the technical field of human body bioelectricity signal acquisition, in particular to a myoelectricity acquisition system for clothes.
Background
Chinese invention patent CN206745356U discloses an electromyographic signal acquisition system, which comprises: the system comprises a myoelectricity acquisition module and a mobile terminal; the system is not limited by wiring and space, and the mobile terminal is used as a receiving and displaying end, so that the whole system is simple and light in structure, convenient to use and carry; myoelectric signals are the superposition of action potentials of a movement unit in a plurality of myofibers on time and space, and can reflect the activities of neuromuscular to a certain extent; is widely applied to the fields of clinical medicine, human-computer efficiency, rehabilitation medicine, sports science and the like; at present, the interaction modes adopted by the interaction products mainly comprise two modes of main voice and gesture; however, the voice interaction mode has relatively large delay, is easily influenced by environmental noise, is inconvenient to use in public places, and is difficult to complete continuous operation; the gesture interaction mode is easy to be shielded, and the requirement on environmental conditions is high; in addition, because the acquired image data is large in size, a large amount of computing resources are needed, and the image data is not easy to deploy to wearable equipment; therefore, the invention of the myoelectricity acquisition system for clothes is particularly important;
the existing myoelectricity acquisition systems are mostly connected through wires and are connected to a desktop computer through the acquisition devices through the wires for display, the myoelectricity acquisition system is large in occupied area, inconvenient to carry and inconvenient to use, cannot be applied to various application scenes, the myoelectricity signal acquisition process is prone to interference, the signal collection integrity is low, and therefore the myoelectricity acquisition system for clothes is provided.
Disclosure of Invention
The invention aims to provide a myoelectricity acquisition system for clothes, and aims to solve the problems that most of the existing myoelectricity acquisition systems in the background art are connected by wires and are connected to a desktop computer for display through an acquisition device, the myoelectricity acquisition system occupies a large area, is inconvenient to use and carry, cannot be suitable for various application scenes, is easy to interfere in the myoelectricity signal acquisition process, and has low signal collection integrity.
The purpose of the invention can be realized by the following technical scheme:
a myoelectricity acquisition system for clothes comprises a myoelectricity sensing module, a simulation front end, a core board central control module, a state display module, an upper computer module, a lithium battery module, a current limiting chip module and a right leg driving circuit module;
the analog front end comprises a differential amplification unit, a filtering unit and an AD conversion unit; the core board central control module comprises a data storage unit, a data processing unit and an electric quantity monitoring unit; the AD conversion unit is in circuit connection with the right leg driving circuit module; the electric quantity monitoring module is connected with the current limiting chip circuit, and the central control module of the core board is connected with the upper computer module in a Bluetooth mode; the core board central control module is in circuit connection with the state display module; the lithium battery module is in circuit connection with the myoelectricity sensing module, the simulation front end, the core board central control module, the state display module, the upper computer module and the current limiting chip module.
Furthermore, the electromyographic sensor comprises a plurality of electrode plates which are respectively arranged at the positions corresponding to the clothes of the big arms and the small arms of the two hands and the neck of the trunk and are used for collecting the big electromyographic signals sent by the human body; the lithium battery module comprises two groups of linear battery units which are arranged inside clothes and used for supplying power to the whole myoelectricity acquisition system.
Furthermore, the analog front end is specifically an ADS1299 integrated bioelectricity signal acquisition analog front end chip arranged inside the garment; the differential amplification unit is specifically 8 independent differential input program control gain amplifiers for amplifying the myoelectric signals acquired by the electrode plates; the filter unit is used for removing power frequency interference in the electromyographic signal acquisition process; the AD conversion unit is used for carrying out digital-to-analog conversion on the electromyographic signals to obtain digital signals, and sending the digital signals to the core board central control module.
Further, the core board central control module is specifically an ESP32-WROOM-32SoC and is arranged at the chest position of the clothes; the data storage unit is used for receiving the digital signals obtained through digital-to-analog conversion and storing data; the data processing unit is used for extracting the digital signals in the data storage unit, processing the digital signals and sending the digital signals to the upper computer module in a Bluetooth transmission mode; the electric quantity detection module is used for monitoring the internal electric quantity of the two groups of linear battery units.
Further, the state display module is specifically an LED lamp, comprises two red and green modes, is arranged at the position of the chest of the clothes and is used for displaying the use states of the two groups of linear battery units; the upper computer module is specifically one of a mobile phone, a computer and an intelligent watch and is used for displaying the processed digital signals.
Furthermore, the right leg driving circuit module is arranged inside the clothes and used for reducing electromagnetic interference and eliminating interference noise; the current-limiting chip module is specifically an MT9700 current-limiting switch chip, is arranged inside clothes and is used for overcurrent protection and battery reverse connection protection.
Further, one group of linear battery units is specifically a 2.5V lithium battery, and the other group of linear battery units is specifically a 3.7V 14500AA lithium battery; the 2.5V lithium battery is connected with the analog front-end circuit and the myoelectricity sensing module, and the 3.7V 14500AA lithium battery is connected with the core board central control module, the state display module, the current-limiting chip module and the right leg driving circuit module through circuits.
Furthermore, an Xtensa dual-core 240MHz 32bit processor is arranged in the data processing unit, a FreeRTOS real-time operating system is operated, and the Xtensa dual-core 240MHz 32bit processor is provided with a Bluetooth transmission unit; the filter unit is specifically a first-order RC filter.
The invention has the beneficial effects that:
(1) the invention is provided with an analog front end, specifically an ADS1299 integrated bioelectricity signal acquisition analog front end chip, which comprises a differential amplification unit, a filtering unit and an AD conversion unit, wherein the differential amplification unit is specifically 8 independent differential input program control gain amplifiers, the impedance of the part of human tissue is about 104 omega magnitude as the muscle electricity signal is conducted to the human surface through tissues such as skin, so the myoelectricity signal is weakened due to the impedance of the human tissue in the transmission process of the myoelectricity signal, and the 8 independent differential input program control gain amplifiers can amplify the myoelectricity signal acquired by an electrode plate, thereby being beneficial to improving the integrity of the myoelectricity signal, in addition, the human skin surface area is large, and the myoelectricity signal is easy to form capacitive coupling with surrounding electrical equipment such as a socket, a power transmission line and the like to form 50Hz power frequency interference, compared with a filtering method, the right leg driving circuit module can improve the signal-to-noise ratio of signals in a corresponding frequency band range, reduce electromagnetic interference and eliminate interference noise, and is also provided with a filter unit which is a first-order RC filter and can remove power frequency interference in the electromyographic signal acquisition process, so that the integrity of the electromyographic signal is further improved, and the electromyographic signal is ensured to be accurately and effectively acquired; in addition, the resistance in the first-order RC filter also plays a role in protecting the AD conversion unit;
(2) the invention is provided with a lithium battery module which comprises two groups of linear battery units, wherein one group of linear battery units is a 2.5V lithium battery, the other group of linear battery units is a 3.7V 14500AA lithium battery, the two groups of linear battery units have good electricity storage function and larger electricity storage capacity and certain safety, and can ensure the long-term use of the product, and the lithium battery module is connected with a current limiting chip module circuit, the current limiting chip module is an MT9700 current limiting switch chip and has overcurrent protection and battery reverse connection protection, so that the use safety of the invention is further ensured.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, a myoelectricity collection system for clothes comprises a myoelectricity sensing module, a simulation front end, a core board central control module, a state display module, an upper computer module, a lithium battery module, a current limiting chip module and a right leg driving circuit module;
the analog front end comprises a differential amplification unit, a filtering unit and an AD conversion unit; the core board central control module comprises a data storage unit, a data processing unit and an electric quantity monitoring unit; the AD conversion unit is in circuit connection with the right leg driving circuit module; the electric quantity monitoring module is in circuit connection with the current limiting chip, and the central control module of the core board is in Bluetooth connection with the upper computer module; the core board central control module is in circuit connection with the state display module; the lithium battery module is in circuit connection with the myoelectricity sensing module, the simulation front end, the core board central control module, the state display module, the upper computer module and the current limiting chip module.
The electromyographic sensor comprises a plurality of electrode plates which are respectively arranged at the positions corresponding to the clothes of the big arms and the small arms of the two hands and the neck of the trunk and are used for collecting the big electromyographic signals sent by the human body; the lithium battery module comprises two groups of linear battery units which are arranged inside the clothes and used for supplying power to the whole myoelectricity acquisition system.
The simulation front end is specifically an ADS1299 integrated bioelectricity signal acquisition simulation front end chip which is arranged in the clothes; the differential amplification unit is specifically 8 independent differential input program control gain amplifiers for amplifying the myoelectric signals acquired by the electrode plates; the filter unit is used for removing power frequency interference in the electromyographic signal acquisition process; the AD conversion unit is used for carrying out digital-to-analog conversion on the electromyographic signals to obtain digital signals, and sending the digital signals to the core board central control module.
The core board central control module is specifically an ESP32-WROOM-32SoC and is arranged at the chest position of the garment; the data storage unit is used for receiving the digital signals obtained through digital-to-analog conversion and storing data; the data processing unit is used for extracting the digital signals in the data storage unit, processing the digital signals and sending the digital signals to the upper computer module in a Bluetooth transmission mode; the electric quantity detection module is used for monitoring the internal electric quantity of the two groups of linear battery units.
The state display module is specifically an LED lamp, comprises two red and green modes, is arranged at the position in front of the chest of clothes and is used for displaying the use states of two groups of linear battery units; the upper computer module is specifically one of a mobile phone, a computer and an intelligent watch and is used for displaying the processed digital signals.
The right leg driving circuit module is arranged in the clothes and used for reducing electromagnetic interference and eliminating interference noise; the current-limiting chip module is specifically an MT9700 current-limiting switch chip, is arranged inside clothes and is used for overcurrent protection and battery reverse connection protection.
Two groups of linear battery units, wherein one group of linear battery units is a 2.5V lithium battery, and the other group of linear battery units is a 3.7V 14500AA lithium battery; the 2.5V lithium battery is connected with the analog front-end circuit and the myoelectricity sensing module, and the 3.7V 14500AA lithium battery is connected with the core board central control module, the state display module, the current limiting chip module and the right leg driving circuit module through circuits.
An Xtensa dual-core 240MHz 32bit processor is arranged in the data processing unit, a FreeRTOS real-time operating system is operated, and the Xtensa dual-core 240MHz 32bit processor is provided with a Bluetooth transmission unit; the filter unit is specifically a first-order RC filter.
It should be noted that, the invention is a myoelectricity collecting system for clothes, before using, the user first wears the clothes on, after wearing, several electrode sheets distributed on the corresponding positions of the big arm, the small arm and the neck of the trunk will collect the large myoelectricity signal sent by the human body, then the ADS1299 integrated with the bioelectricity signal collecting analog front end chip will receive the myoelectricity signal, and amplify the myoelectricity signal collected by the electrode slice through 8 independent differential input program control gain amplifiers, at the same time, the filter unit will also remove the power frequency interference in the myoelectricity signal collecting process, and the clothes is also provided with a right leg driving circuit module, because the electronic signal sent by the myoelectricity circuit is very tiny, usually only a few microvolts (ten thousands of volts), the right leg driving circuit module can reduce electromagnetic interference and eliminate interference noise, the integrity of the electromyographic signals is further ensured, then, the AD conversion unit can carry out digital-to-analog conversion on the electromyographic signals to obtain digital signals and send the digital signals to the control module in the core board, then, the data storage unit can receive the digital signals obtained through the digital-to-analog conversion and store the data, then, the data processing unit can extract the digital signals in the data storage unit, carry out data processing on the digital signals and send the digital signals to the upper computer module in a Bluetooth transmission mode, and finally, the upper computer module displays the processed digital signals; thereby completing electromyographic signal acquisition; the myoelectric signal acquisition device is convenient to carry, can be suitable for various application scenes, is not easy to interfere in the myoelectric signal acquisition process, and is favorable for ensuring the integrity of the myoelectric signal; in addition, the invention adopts two groups of linear battery units, one group of linear battery units is particularly a 2.5V lithium battery, the other group of linear battery units is particularly a 3.7V 14500AA lithium battery, the two groups of linear battery units not only have low output voltage, but also have higher battery capacity utilization rate, and the invention is provided with a current-limiting chip module, particularly an MT9700 current-limiting switch chip, so that overcurrent protection and battery reverse connection protection are realized.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (8)
1. A myoelectricity acquisition system for clothes is characterized by comprising a myoelectricity sensing module, a simulation front end, a core board central control module, a state display module, an upper computer module, a lithium battery module, a current limiting chip module and a right leg driving circuit module;
the analog front end comprises a differential amplification unit, a filtering unit and an AD conversion unit; the core board central control module comprises a data storage unit, a data processing unit and an electric quantity monitoring unit; the AD conversion unit is in circuit connection with the right leg driving circuit module; the electric quantity monitoring module is connected with the current limiting chip circuit, and the central control module of the core board is connected with the upper computer module in a Bluetooth mode; the core board central control module is in circuit connection with the state display module; the lithium battery module is in circuit connection with the myoelectricity sensing module, the simulation front end, the core board central control module, the state display module, the upper computer module and the current limiting chip module.
2. The system for collecting myoelectricity on clothes according to claim 1, wherein the myoelectricity sensor comprises a plurality of electrode plates, which are respectively arranged at the positions corresponding to the clothes on the two-hand large arm and small arm and the trunk neck and are used for collecting the large myoelectricity signals emitted by the human body; the lithium battery module comprises two groups of linear battery units which are arranged inside clothes and used for supplying power to the whole myoelectricity acquisition system.
3. The myoelectric acquisition system for clothing according to claim 1, wherein the analog front end is specifically an ADS1299 integrated bioelectric signal acquisition analog front end chip, which is arranged inside clothing; the differential amplification unit is specifically 8 independent differential input program control gain amplifiers for amplifying the myoelectric signals acquired by the electrode plates; the filter unit is used for removing power frequency interference in the electromyographic signal acquisition process; the AD conversion unit is used for carrying out digital-to-analog conversion on the electromyographic signals to obtain digital signals, and sending the digital signals to the core board central control module.
4. The myoelectric acquisition system for clothes according to claim 1, wherein the core board central control module is ESP32-WROOM-32SoC, and is arranged at the chest position of the clothes; the data storage unit is used for receiving the digital signals obtained through digital-to-analog conversion and storing data; the data processing unit is used for extracting the digital signals in the data storage unit, processing the digital signals and sending the digital signals to the upper computer module in a Bluetooth transmission mode; the electric quantity detection module is used for monitoring the internal electric quantity of the two groups of linear battery units.
5. The myoelectricity collection system for clothes according to claim 1, wherein the state display module is a LED lamp, comprises two red and green modes, is arranged at the chest position of the clothes and is used for displaying the use states of the two groups of linear battery units; the upper computer module is specifically one of a mobile phone, a computer and an intelligent watch and is used for displaying the processed digital signals.
6. The system for collecting myoelectricity on clothes according to claim 1, wherein the right leg driving circuit module is arranged inside the clothes for reducing electromagnetic interference and eliminating interference noise; the current-limiting chip module is specifically an MT9700 current-limiting switch chip, is arranged inside clothes and is used for overcurrent protection and battery reverse connection protection.
7. The myoelectric collection system for clothes according to claim 2, wherein the two groups of linear battery units are respectively a 2.5V lithium battery and a 3.7V 14500AA lithium battery; the 2.5V lithium battery is connected with the analog front-end circuit and the myoelectricity sensing module, and the 3.7V 14500AA lithium battery is connected with the core board central control module, the state display module, the current-limiting chip module and the right leg driving circuit module through circuits.
8. The myoelectric acquisition system for clothing according to claim 4, wherein the Xtensa dual-core 240MHz 32bit processor is built in the data processing unit, a FreeRTOS real-time operating system is operated, and the Xtensa dual-core 240MHz 32bit processor has a bluetooth transmission unit; the filter unit is specifically a first-order RC filter.
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| CN202011499181.9A CN112494056A (en) | 2020-12-16 | 2020-12-16 | Myoelectricity acquisition system for clothes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114343678A (en) * | 2021-12-13 | 2022-04-15 | 浙江帝诺医疗科技有限公司 | Myoelectricity acquisition system and myoelectricity acquisition unit for wireless transmission of human body surface |
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| US20180296156A1 (en) * | 2014-10-29 | 2018-10-18 | Bloom Technologies NV | A method and device for contraction monitoring |
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| CN211862801U (en) * | 2019-12-06 | 2020-11-06 | 深圳市润谊泰益科技有限责任公司 | Electromyographic signal collector and system |
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- 2020-12-16 CN CN202011499181.9A patent/CN112494056A/en active Pending
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| CN101965681A (en) * | 2008-03-11 | 2011-02-02 | 电子显微技术Sa研发Csem瑞士中心 | Floating front-end amplifier and one-wire measuring devices |
| CN104717919A (en) * | 2012-02-08 | 2015-06-17 | 易赛格有限责任公司 | ECG system with multi mode electrode units |
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| CN114343678A (en) * | 2021-12-13 | 2022-04-15 | 浙江帝诺医疗科技有限公司 | Myoelectricity acquisition system and myoelectricity acquisition unit for wireless transmission of human body surface |
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Application publication date: 20210316 |