CN213821440U

CN213821440U - Human physiological electrical data fusion acquisition device

Info

Publication number: CN213821440U
Application number: CN202022412704.3U
Authority: CN
Inventors: 江刚; 王维永; 王剑飞; 徐路瑶
Original assignee: Zhongshan Yougan Technology Co ltd
Current assignee: Zhongshan Yougan Technology Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-07-30
Anticipated expiration: 2030-10-27

Abstract

The utility model provides a human body physiological electrical data fusion acquisition device, which comprises a device body and a sensing data line connected with the device body; the device body is provided with: the data interfaces are connected with the sensing data lines, and each data interface is used for connecting one sensing data line; a plurality of eight-channel analog data acquisition and processing chips connected with the data interfaces, wherein the eight-channel analog data acquisition and processing chips are connected with the same external clock; the processor is respectively connected with the eight-channel analog data acquisition and processing chips; and the communication unit is connected with the processor to transmit the collected data outwards. The method integrates a plurality of basic acquisition amplifiers capable of meeting requirements of electroencephalogram and electromyogram signals, can realize synchronous acquisition of electroencephalogram and electromyogram signals, and ensures time sequence alignment of different signals to avoid feature fusion errors; meanwhile, the number of useful data acquisition channels is ensured to be sufficient, and the number of artifact acquisition channels is designed in a self-adaptive mode according to requirements.

Description

Human physiological electrical data fusion acquisition device

Technical Field

The utility model relates to a human physiology electric data acquisition and processing technology field, concretely relates to human physiology electric data fusion collection system.

Background

The electroencephalogram and the myoelectricity have wide application prospects in basic medical research, clinical diagnosis of diseases and physiological health monitoring, and especially in the field of intelligent interaction. The brain intention can be more accurately identified through fusion processing of the electroencephalogram signal and the electromyogram signal, and compared with single signal identification, the situations of misjudgment and the like can be avoided. However, most of the current electroencephalogram and electromyogram acquisition devices are independent devices, a high-density electroencephalogram-electromyogram cooperative acquisition device is lacked, the time sequence of the independent electroencephalogram and electromyogram acquisition devices is difficult to correspond, and signal characteristic fusion is prone to deviation.

Therefore, the study of the electroencephalogram and electromyogram fusion acquisition device and the guarantee of different signal time sequences have certain necessity for the technical scheme of avoiding the characteristic fusion error.

SUMMERY OF THE UTILITY MODEL

For satisfying the demand of human physiology electric data, the utility model provides a human physiology electric data fusion collection system, its concrete technical content is as follows:

a human physiological electrical data fusion acquisition device comprises a device body and a sensing data line connected with the device body; the device body is provided with: the data interfaces are connected with the sensing data lines, and each data interface is used for connecting one sensing data line; a plurality of eight-channel analog data acquisition and processing chips connected with the data interfaces, wherein the eight-channel analog data acquisition and processing chips are connected with the same external clock; the processor is respectively connected with the eight-channel analog data acquisition and processing chips; and the communication unit is connected with the processor to transmit the collected data outwards.

In one or more embodiments of the present invention, the data interface is an HDMI pluggable interface.

In the middle of one or more embodiments of the utility model, sensing data line leads developments lead line as an organic whole more, an organic whole lead developments lead line include with the connector of the data interface butt joint of device body, with many lead lines that the connector each conducts the stitch and connects to and set up in the terminal electrode sensor of each lead line.

In one or more embodiments of the present invention, the connector of the integrated multi-lead dynamic lead wire is connected to the HDMI connector, and the number of the lead wires is ten.

In one or more embodiments of the present invention, the electrode sensor is a flexible fabric electrode sensor, which includes a conductive foam, a pure cotton fabric, a conductive fabric and a metal electrode, the top side of the conductive foam is covered with the pure cotton fabric and is wrapped by the conductive fabric, the inner side of the conductive fabric contacting the conductive foam is provided with a conductive adhesive layer, the outer side of the conductive fabric is provided with a nano metal layer, and the conductive fabric is provided with a through hole opposite to the pure cotton fabric; the metal electrode penetrates through the conductive fabric to be in contact with the conductive foam.

In one or more embodiments of the present invention, the metal electrode has a spherical end at the exposed portion of the conductive fabric on the surface side.

In one or more embodiments of the present invention, the communication unit includes a WIFI communication unit.

In one or more embodiments of the present invention, the device body further includes a Debug download unit for upgrading or debugging the program, the Debug download unit is connected to the processor or/and the communication unit through the system bus.

In one or more embodiments of the present invention, the device body further includes a power management unit, a battery charging/discharging management unit, and a power interface.

In the middle of one or more embodiments of the utility model, set a plurality of wearing subassemblies that are used for attaching to the human body in order to carry out physiology electrical data acquisition, the wearing subassembly includes brain electricity cap, wrist band or facial mask.

The utility model has the advantages that: the device is integrated with a plurality of basic acquisition amplifiers (namely eight-channel analog data acquisition processing chips) capable of meeting the requirements of electroencephalogram and electromyogram signals, can realize synchronous acquisition of the electroencephalogram and electromyogram signals so as to ensure that different signal time sequences are aligned and avoid feature fusion errors, and is small in size, convenient to carry and store, and capable of being flexibly used in different scenes; meanwhile, the number of useful data acquisition channels is ensured to be sufficient, and the number of artifact acquisition channels is designed in a self-adaptive mode according to requirements.

Drawings

Fig. 1 is a schematic block diagram of the present invention.

Fig. 2 is an exploded schematic view of the device body according to the present invention.

Fig. 3 is a schematic diagram of the layout structure of the device body circuit board of the present invention.

Fig. 4 is a schematic perspective view of the electrode sensor of the present invention.

Fig. 5 is a schematic sectional structure diagram of the electrode sensor of the present invention.

Fig. 6 is a schematic view of the usage state of the present invention.

Detailed Description

The scheme of the present application is further described below with reference to the accompanying drawings, 1 to 6:

a human physiological electrical data fusion acquisition device comprises a device body 1 and a sensing data line 2 connected with the device body 1; the device body 1 is provided with a plurality of data interfaces 3 connected with the sensing data lines 2, and each data interface 3 is used for connecting one sensing data line 2; a plurality of eight-channel analog data acquisition and processing chips 4 connected with the data interfaces 3, wherein the eight-channel analog data acquisition and processing chips 4 are connected with the same external clock; the processor 5 is respectively connected with the eight-channel analog data acquisition and processing chips 4; and a communication unit 6 connected with the processor 5 to transmit the collected data to the outside. Specifically, the data interface 5 is an HDMI plug-in interface, and the communication unit 6 is a WIFI communication unit. The sensing data line 2 is an integrated multi-conductor dynamic lead line, specifically an integrated ten-conductor dynamic lead line, and includes a connector 201 butted with the HDMI plug-in interface of the device body 1, ten lead lines 202 connected with the conductive pins of the connector 201, and an electrode sensor 7 disposed at the end of each lead line 202. The electrode sensor 7 is a flexible fabric electrode sensor, and comprises a conductive foam 701, a pure cotton fabric 702, a conductive fabric 703 and a metal electrode 704, wherein the pure cotton fabric 702 is covered on the top side of the conductive foam 701 and is wrapped by the conductive fabric 703, a conductive adhesive layer 705 is arranged on the inner side of the conductive fabric 703, which is in contact with the conductive foam 701, a nano metal layer 706 is arranged on the outer surface side of the conductive fabric 703, and the conductive fabric 703 is provided with a through hole 707 opposite to the pure cotton fabric 702; the metal electrode 704 is arranged in the conductive fabric 703 in a penetrating manner to be in contact with the conductive foam 701, and the exposed part of the metal electrode 704 on the surface side of the conductive fabric 703 is provided with a spherical end.

In this embodiment, a conductive fabric 703 with excellent conductivity is selected, and a nano metal material, such as nano nickel copper, is plated on the surface to form a nano metal layer 706; and the other side thereof is coated with a conductive adhesive such as a conductive gel to form a conductive adhesive layer 705. The conductive foam 701 is a PU material produced by a foaming technology and has good conductivity. The pure cotton fabric 702 is used as a high-water-absorption and moisture-permeable fabric and placed between the conductive fabric 703 and the conductive foam 701, and the conductive fabric 703 is provided with a diamond-shaped through hole so that the pure cotton fabric 702 is in direct contact with the skin, thereby accelerating the absorption process of sweat. Compared with the traditional wet electrode, the flexible fabric electrode sensor has smaller contact impedance with a human body, can keep relatively stable contact impedance along with the passage of time, and can effectively absorb sweat of the human body and further reduce the contact impedance after absorbing the sweat. The signal acquisition device is arranged at the acquisition front end, so that the quality of the acquired signal can be effectively improved, and the signal to noise ratio is further improved. Meanwhile, the flexible fabric electrode sensor is strong in electric coupling robustness, good in flexibility, small in pressure and pain feeling when contacting with the skin, good in comfort and capable of being tightly attached to the head, limbs and the like through deformation. The traditional device based on wet electrodes is not needed to be smeared with conductive paste and is used for skin treatment, convenience and rapidness are realized, and the user requirement is low.

The ten-conductor dynamic lead wire is integrated with ten lead wires by adopting a standard 19-pin HDMI socket, so that the space is saved, the experimental device is convenient to install, and the operation by a user is easy. Based on the characteristics of the flexible fabric electrode sensor, the electroencephalogram cap 8, the wrist guard 9 and the facial mask 10 are matched, electrodes do not need to be fixed, and signal collection points are selected in a self-adaptive mode. The flexible fabric electrode sensor is connected with the spherical tail end of a metal electrode 704 of the flexible fabric electrode sensor penetrating through the electroencephalogram cap 8, the facial mask 10 or the wrist guard 9 through a client end connector 203 of an integrated ten-lead dynamic lead wire, and is connected with the data interface 3 through a connector 201 of the integrated ten-lead dynamic lead wire, so that the acquired signals are transmitted; the wearing mode can effectively fix each electrode and improve the data acquisition accuracy. The brain cap 8 mainly covers the part of the brain which relates to motor imagery, cognitive ability assessment, vision assessment and emotion assessment; the wrist guard 9 covers main muscles related to the motion of the large arm, the small arm and the hand, and can be used for identifying arm motions and hand motions; the facial mask 10 covers the major expression muscles and can be used for expression recognition, eye movement recognition, etc. Correspondingly, the eight-channel analog data acquisition and processing chip 4 is divided into three groups, each group is provided with a plurality of analog data acquisition and processing chips, and the analog data acquisition and processing chips are respectively used for correspondingly connecting and acquiring electric signals of the electroencephalogram cap 8, the wrist guard 9 and the facial mask 10, so that the synchronous acquisition of electroencephalogram and electromyogram signals is realized, and the alignment of different signal time sequences is ensured to avoid feature fusion errors.

The eight-channel analog data acquisition processing chip 4 is an ADS amplifier meeting the requirements of electroencephalogram and electromyogram signal acquisition, and can synchronously acquire multi-lead data by combining a plurality of data interfaces and a plurality of integrated ten-lead dynamic lead lines, so that multi-channel electroencephalogram and electromyogram integrated processing can be realized. In this embodiment, the eight-channel analog data acquisition processing chip 4 adopts an ADS1299 chip, which has the following advantages: the anti-interference requirement of the system can be well ensured by adopting differential input, wherein the common mode rejection ratio of the differential input is up to 110dB, the direct current input impedance is up to 1000 MOmega, and the design of a closed-loop bias driving circuit is matched; the internal part comprises 8 low-noise Programmable Gain Amplifiers (PGA) and 8 synchronous sampling A/D converters with the precision of 24 bits; based on the PGA programmable gain control, the voltage resolution can reach 0.0536 uV. Therefore, the acquisition module carries out filtering, amplification, analog-to-digital conversion and operation processing on the acquired signals, and can acquire data with higher signal-to-noise ratio. Meanwhile, all the eight-channel analog data acquisition processing chips 4 use the same external clock and the same ADS sampling rate, so that different channels of electroencephalogram and myoelectricity can be synchronously opened, the alignment of acquired data is ensured, and electroencephalogram and myoelectricity signal feature fusion identification errors caused by data timing sequence deviation are avoided.

Eight passageway analog data acquisition and processing chip 4 take the SPI agreement to give treater 5 with data transmission, treater 5 packs the processing to the data that eight passageway analog data acquisition of a plurality of processing chip 4 gathered at the same moment, data after the processing is transmitted to communication unit 6 through the SPI interface again, then with the wireless transmission of the data of acquireing to predetermined terminal 11, the loaded down with trivial details steps such as traditional wiring have been saved, can use under arbitrary scene, and can gather data in real time and upload in the wiFi environment in real time, need not at the casing integrated storage device, the structure of this device has also been simplified, and the cost is reduced.

The terminal 11 is mainly used for receiving, displaying and storing data, namely, performing baseline calibration, power frequency interference filtering and other operations on the data in real time. The acquired physiological signals contain artifacts such as blinking, electrocardio and the like, and the existing artifacts interfere the extraction of certain physiological signal characteristics such as ERP and the like, so that the artifacts need to be removed at the moment; the method is based on a flexible fabric electrode sensor with low impedance and high sensitivity, an ADS (eight-channel analog data acquisition processing chip 4) acquisition chip with high input impedance, an artifact acquisition channel capable of being designed in a self-adaptive mode and a filtering algorithm (for example, FastICA algorithm) of a PC (personal computer) end, noise reduction is cooperated to improve the signal-to-noise ratio of data of each channel, a user can set an artifact signal acquisition channel and an acquisition position point in a self-adaptive mode at the front end of the sensor according to the requirement of data accuracy, and self-adaptive artifact removal is carried out in cooperation with the algorithm of the PC end. The multi-lead acquisition device can ensure that the channels are adaptively arranged to acquire artifact signals and ensure the number of useful electroencephalogram and electromyogram signal acquisition channels. The artifact collecting point can be arranged at a position with higher artifact energy, the higher the collected artifact energy is, the more beneficial the artifact removal is, for example, the electrode is placed at the position of 1.5cm at the outer canthus of the eye in horizontal eye electrical collection, and the electrode is placed at the position of the left chest in electrocardio artifact collection. The PC side carries out baseline calibration and power frequency interference filtering on received sensing front-end acquired data in real time, and carries out band-pass digital filtering on the basis of the frequency spectrum range of electroencephalogram and electromyogram signals, so that environmental interference is reduced, and signal quality is improved. It is not intended to be exhaustive or to limit the invention to the precise form disclosed.

The apparatus body 1 includes an upper case 101 and a lower case 102, and the upper case 101 and the lower case 102 are hingably fixed. A circuit board 103 is arranged in the upper shell 101 and the lower shell 102, and the processor 5, the data interface 3, the eight-channel analog data acquisition and processing chip 4 and the communication unit 6 are arranged on the circuit board 103. Further, the circuit board 103 is further provided with a power module 12, a DeBug downloading unit 13, a key unit 14 and a working state indicator lamp 15;

the power module 12 includes a power management unit 121 and a lithium battery 122, and the power management unit 121 integrates a conventional power circuit including a filter circuit and a voltage regulator circuit, so as to convert the output voltage of the lithium battery 122 into the voltage required by each module of the circuit connected thereto. Further, the battery charging and discharging management unit 123 is further included, the outer side walls of the upper shell 101 and the lower shell 102 are provided with a power interface 124, and the power interface 124 can be connected with a power line and is connected with commercial power through the power line so as to obtain electric energy of the commercial power. The power interface 124, the battery charging and discharging management unit 123 and the power management unit 121 are connected in sequence, and the commercial power charges the battery through the charging and discharging management unit. When the commercial power is switched on, the electric energy of the battery is not used, the electric energy consumption of the battery is reduced, and the endurance time is longer.

The DeBug download unit 13 is connected with serial port debugging interfaces 131 arranged on the front side walls of the upper shell 101 and the lower shell 102, can be connected with a USB data line through the serial port debugging interfaces 131, and can be connected with a computer end through the USB data line, so that serial port information printing can be realized. The DeBug download unit 13 is connected with the computer end through the Arm simulator, and can realize program upgrading.

The communication unit 6 can control the apparatus body, and for convenience of operation, a key unit 14 may be provided at the right portion between the upper case 101 and the lower case 102, and input operation or switching on/off of power may be performed through the key unit 14. The operation status indicator lamp 15 is used to indicate the charging status, or indicate the operation status of the device body 1 when it is operated.

The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.

Claims

1. A human physiological electrical data fusion acquisition device is characterized by comprising a device body and a sensing data line connected with the device body; the device body is provided with:

the data interfaces are connected with the sensing data lines, and each data interface is used for connecting one sensing data line;

a plurality of eight-channel analog data acquisition and processing chips connected with the data interfaces, wherein the eight-channel analog data acquisition and processing chips are connected with the same external clock;

the processor is respectively connected with the eight-channel analog data acquisition and processing chips; and

and the communication unit is connected with the processor and is used for transmitting the acquired data outwards.

2. The human body physiological electrical data fusion acquisition device according to claim 1, wherein: the data interface is an HDMI plug-in interface.

3. The human body physiological electrical data fusion acquisition device according to claim 1, wherein: the sensing data line is the dynamic line of leading more as an organic whole, the dynamic line of leading more as an organic whole include with the connector of the data interface butt joint of device body, with the many lines of leading that each conduction stitch of connector is connected to and set up in the terminal electrode sensor of each line of leading.

4. The human body physiological electrical data fusion acquisition device according to claim 3, wherein: the connector of the integrated multi-conductor dynamic lead wire is in butt joint with the HDMI plug-in type interface, and the number of the lead wires is ten.

5. The human body physiological electrical data fusion acquisition device according to claim 3, wherein: the electrode sensor is a flexible fabric electrode sensor and comprises conductive foam, pure cotton fabric, conductive fabric and a metal electrode, wherein the pure cotton fabric is covered on the top side of the conductive foam and is wrapped by the conductive fabric, a conductive adhesive layer is arranged on the inner side of the conductive fabric, which is in contact with the conductive foam, a nano metal layer is arranged on the outer surface of the conductive fabric, and the conductive fabric is provided with a through hole opposite to the pure cotton fabric; the metal electrode penetrates through the conductive fabric to be in contact with the conductive foam.

6. The human body physiological electrical data fusion acquisition device according to claim 5, wherein: the metal electrode is provided with a spherical end at the exposed part on the surface side of the conductive fabric.

7. The human body physiological electrical data fusion acquisition device according to any one of claims 1 to 6, wherein: the communication unit comprises a WIFI communication unit.

8. The human body physiological electrical data fusion acquisition device according to any one of claims 1 to 6, wherein: the device body is also provided with a Debug downloading unit for program upgrading or debugging, and the Debug downloading unit is connected with the processor or/and the communication unit through a system bus.

9. The human body physiological electrical data fusion acquisition device according to any one of claims 1 to 6, wherein: the device body is also provided with a power supply management unit, a battery charging and discharging management unit and a power supply interface.

10. The human body physiological electrical data fusion acquisition device according to any one of claims 1 to 6, wherein: set a plurality of wearing subassemblies that are used for attaching to the human body in order to carry out physiology electrical data acquisition, the wearing subassembly includes brain electricity cap, wrist band or facial mask.