CN111281383A - Array type piezoelectric bimorph stimulation system - Google Patents
Array type piezoelectric bimorph stimulation system Download PDFInfo
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- CN111281383A CN111281383A CN202010154130.6A CN202010154130A CN111281383A CN 111281383 A CN111281383 A CN 111281383A CN 202010154130 A CN202010154130 A CN 202010154130A CN 111281383 A CN111281383 A CN 111281383A
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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
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/369—Electroencephalography [EEG]
- A61B5/377—Electroencephalography [EEG] using evoked responses
Abstract
The invention discloses an array piezoelectric bimorph stimulation system which comprises an upper computer control platform and a lower computer processing control platform, wherein the upper computer control platform is electrically connected with the lower computer processing control platform, the lower computer processing control platform controls a touch dot matrix driving circuit through a transfer board, the output end of the contact dot matrix driving circuit is connected to the driving circuit, and the driving circuit is connected to a contact dot matrix device through a wiring terminal. The invention reasonably applies the serial data processing principle, saves the circuit hardware resource, reduces the software development cost, has stable working performance and good hardware communication and software control performance, meets the requirement of convenient module disassembly and assembly, and can be used for the touch stimulation experiment.
Description
Technical Field
The invention relates to the technical field of touch display, in particular to an array type piezoelectric bimorph stimulation system.
Background
In daily life, people have various tactile senses, and can generate corresponding cognitive changes to external environment stimuli, such as sound, light, electricity, pressure and other stimuli, which can cause various stimulus influences to people, and various stimuli can all cause various complex activities to neurons of the human body. The touch is a complex process of generating sense and cognition by generating different action potentials through a touch receptor on the skin by taking an objective object as an object, converting external physical quantity into a nerve signal and transmitting the nerve signal to a somatosensory cortex of a brain to excite the brain function of touch.
Tactile brain mapping measurements require stimulation of the skin to trigger neuronal activity. The individual difference of the skin is large, and accurate positioning of the tactile stimulation sites is an important factor for improving the accuracy of tactile brain atlas measurement. Because of the strong magnetic field around the functional magnetic resonance device, ferromagnetic articles not only can interfere with the magnetic field, but also have great danger, therefore, ferromagnetic articles can not be placed into the nuclear magnetic room. During the measurement, the subject needs to enter the nuclear magnetic chamber, and the device for applying the tactile stimulation is close to the subject. This requires nuclear magnetic compatibility of the device applying the tactile stimulus. In addition, the brain activity is temporally variable, time delay reduces the accuracy of measurement, the device for applying tactile stimulation needs to have a high time response speed, and control of tactile stimulation needs to be responsive quickly. However, the prior art devices for applying tactile stimulation have a slow response speed and a low precision for applying the tactile stimulation sites.
Disclosure of Invention
The present invention is directed to an array piezoelectric bimorph stimulation system to solve the above problems of the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an array piezoelectric bimorph stimulation system which comprises an upper computer control platform and a lower computer processing control platform, wherein the upper computer control platform is electrically connected with the lower computer processing control platform, the lower computer processing control platform controls a touch dot matrix driving circuit through a switching plate, the output end of the contact dot matrix driving circuit is connected to the driving circuit, and the driving circuit is connected to a contact dot matrix device through a wiring terminal.
Preferably, the lower computer control platform comprises a main control board, and the main control board comprises a single chip microcomputer, a type-C and 485 bus control chip, a voltage reduction chip, a crystal oscillator and a capacitor resistor; the main control board is communicated with an upper computer control platform through type-c; the single chip microcomputer is connected with the adapter plate and the drive plate through 485 buses respectively.
Preferably, the driving circuit is arranged on the driving board, the driving board is further provided with a power module, a driving module, a control module and a communication module, and an expansion channel module is arranged on each driving board, the driving module is connected with the adapter plate through the FPC and then is in communication connection with the main control board module through a cable, the power module is used for providing power for the driving board, and the control module is electrically connected with the driving module and the communication module respectively.
Preferably, the driving board can be connected with other same driving board modules through FPC flexible flat cables for realizing more channels of tactile stimulation.
Preferably, the power module can set different voltages for varying the output voltage of the haptic device by varying the voltage of the driving plate.
Preferably, the upper computer processing control platform comprises a CAN bus interface circuit, a serial communication circuit, a power interface and a reset circuit, wherein the serial communication circuit is connected with the singlechip through a USB interface, and the power interface circuit is connected with the reset circuit; the CAN bus interface circuit, the serial port communication circuit, the power interface, the reset circuit and the control output interface are directly connected to a main controller.
Preferably, the vibration device is further included, an output end of the driving plate is connected with the vibration device, and the vibration device is used for converting the digital signal of the driving plate into a displacement signal.
The invention discloses the following technical effects: the invention realizes the stimulation of the human body by contacting each skin tissue of the human body with corresponding touch stimulation equipment, adopts electric signal transmission, and a person to be tested only needs to contact the touch equipment of hands or other parts of the human body and then starts the touch equipment to stimulate the human body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic diagram of an array piezoelectric bimorph stimulation system according to the present invention;
FIG. 2 is a partial circuit diagram of the main control board of the array type piezoelectric bimorph stimulation system of the present invention;
fig. 3 is a partial circuit diagram of the patch panel of the array piezoelectric bimorph stimulation system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-3, the invention provides an array type piezoelectric bimorph stimulation system, which comprises an upper computer control platform and a lower computer processing control platform, wherein the upper computer control platform is electrically connected with the lower computer processing control platform, the lower computer processing control platform controls a touch dot matrix driving circuit through a switching plate, the output end of the contact dot matrix driving circuit is connected to a driving circuit, and the driving circuit is connected to a contact dot matrix device through a wiring terminal.
According to a further optimization scheme, the lower computer control platform comprises a main control board, wherein the main control board comprises a single chip microcomputer, a type-C bus control chip, a 485 bus control chip, a voltage reduction chip, a crystal oscillator and a capacitor resistor; the main control board is communicated with an upper computer control platform through type-c; the single chip microcomputer is connected with the adapter plate and the drive plate through 485 buses respectively.
According to the further optimization scheme, the driving circuit is arranged on the driving plate, a power module, a driving module, a control module and a communication module are further arranged on the driving plate, an expansion channel module is arranged on each driving plate, the driving module is connected with the adapter plate through the FPC and then is in communication connection with the main control board module through a cable, the power module is used for providing power for the driving plate, and the control module is respectively in electric connection with the driving module and the communication module.
According to the further optimized scheme, the driving board can be connected with other same driving board modules through FPC flexible flat cables, so that the space is greatly saved, and more channels of touch stimulation are realized.
In a further optimized scheme, the power supply module can set different voltages, and is used for changing the output voltage value of the haptic device by changing the voltage of the driving plate. The power supply end on the driving plate is portable and detachable, so that the power supply voltage can be conveniently modified.
According to a further optimization scheme, the upper computer processing control platform comprises a CAN bus interface circuit, a serial communication circuit, a power interface and a reset circuit, wherein the serial communication circuit is connected with the single chip microcomputer through a USB interface, and the power interface circuit is connected with the reset circuit; the CAN bus interface circuit, the serial port communication circuit, the power interface, the reset circuit and the control output interface are directly connected to a main controller. The instruction of the upper computer transmits the instruction to the singlechip of the control panel through a usb protocol, so that the singlechip of the control panel transmits data through a serial port to the adapter plate through a 485 bus and transmits the data to the drive plate through the 485 protocol, the singlechip of the drive plate controls corresponding channels after the data transmitted by the host computer is analyzed, one instruction is used for controlling the channels each time, and the corresponding output frequency can be controlled according to the time length of the received data; the output channels are completely independent from each other, and each channel can be independently controlled to stimulate the human body at various frequencies.
According to the further optimization scheme, the vibration device is further included, the output end of the driving plate is connected with the vibration device, the vibration device works normally according to instructions of the upper computer and the control plate, digital signals of the driving plate are converted into displacement signals, and stimulation to various frequencies of human tissues is finally achieved.
The working process is as follows: the voltage of a switching power supply is transmitted to a 3.3V voltage of a main control board to be converted into a 3.3V isolation power supply, the 3.3V voltage is reduced to 2.5V through an LDO (low dropout regulator), low-power-consumption power supply of the single chip microcomputer is realized, the single chip microcomputer controls type-c through a usb bus and realizes data transmission with an upper computer, and meanwhile, the single chip microcomputer interacts with other equipment through a chip for controlling a can bus; the single chip microcomputer is connected with the optocoupler chip through a serial port to realize communication with a 485 bus chip of the adapter plate; the adapter plate is connected with the FPC seat of the driving plate through FPC wires to realize voltage control and information transmission of the driving plate. The driving plate is connected with a vibrating device, the vibrating device works normally according to instructions of the upper computer and the control board, digital signals of the driving plate are converted into displacement signals, and stimulation to various frequencies of human tissues is finally achieved.
The working process of the driving plate circuit is as follows: the first part is STM32 singlechip chip control panel, and this singlechip has 144 pins, except power pin and debugging and required serial ports, can also provide 96 IO mouths, provides up to 96 passageway outputs for whole drive circuit, and the second part is triode integrated drive circuit, and this circuit constitutes the core circuit of control output by a pair of NPN and PNP triode, and the third part is D-SUB25 binding post, and the adoption is the D-SUB of no magnetism, and the overall dimension of whole board has 8 x 22cm, can realize the parallelly connected of a plurality of drive plates simultaneously, realizes the expansion of more passageways.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (7)
1. An array type piezoelectric bimorph stimulation system is characterized in that: including host computer control platform, next machine processing control platform, host computer control platform with next machine processing control platform electric connection, next machine processing control platform passes through keysets control touch dot matrix drive circuit, contact dot matrix drive circuit's output is connected to drive circuit, drive circuit is connected to the contact dot matrix device through binding post.
2. The array piezoelectric bimorph stimulation system according to claim 1, characterized in that: the lower computer control platform comprises a main control board, wherein the main control board comprises a single chip microcomputer, a type-C and 485 bus control chip, a voltage reduction chip, a crystal oscillator and a capacitance resistor; the main control board is communicated with an upper computer control platform through type-c; the single chip microcomputer is connected with the adapter plate and the drive plate through 485 buses respectively.
3. The array piezoelectric bimorph stimulation system according to claim 1, characterized in that: the drive circuit is arranged on the drive plate, a power module, a drive module, a control module and a communication module are further arranged on the drive plate, an expansion channel module is arranged on each drive plate, the drive module is connected with the adapter plate through the FPC and then is in communication connection with the main control plate module through a cable, the power module is used for providing power for the drive plate, and the control module is respectively in electric connection with the drive module and the communication module.
4. The array piezoelectric bimorph stimulation system according to claim 3, characterized in that: the drive board can also be connected with other same drive board modules through FPC (flexible printed circuit) flexible flat cables for realizing more channels of tactile stimulation.
5. The array piezoelectric bimorph stimulation system according to claim 3, characterized in that: the power module can set different voltages and is used for changing the output voltage value of the haptic device by changing the voltage of the driving plate.
6. The array piezoelectric bimorph stimulation system according to claim 1, characterized in that: the upper computer processing control platform comprises a CAN bus interface circuit, a serial communication circuit, a power interface and a reset circuit, wherein the serial communication circuit is connected with the single chip microcomputer through a USB interface, and the power interface circuit is connected with the reset circuit; the CAN bus interface circuit, the serial port communication circuit, the power interface, the reset circuit and the control output interface are directly connected to a main controller.
7. The array piezoelectric bimorph stimulation system according to claim 1, characterized in that: the vibration device is used for converting the digital signals of the driving plate into displacement signals.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010154130.6A CN111281383A (en) | 2020-03-07 | 2020-03-07 | Array type piezoelectric bimorph stimulation system |
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| CN202010154130.6A CN111281383A (en) | 2020-03-07 | 2020-03-07 | Array type piezoelectric bimorph stimulation system |
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| CN107252525A (en) * | 2017-04-28 | 2017-10-17 | 上海交通大学 | A kind of multichannel electrical stimulation device based on EMG feedback |
| CN109106370A (en) * | 2018-09-19 | 2019-01-01 | 北京理工大学 | Haptic stimulus device and tactile mind map spectral measurement system |
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| US20190278428A1 (en) * | 2018-02-27 | 2019-09-12 | Chiun Mai Communication Systems, Inc. | Electrical device with piezoelectric elements communicating haptically and audibly with user |
| CN110236647A (en) * | 2019-06-06 | 2019-09-17 | 南京航空航天大学 | A kind of prostate acupuncture mechanism and working method for inside magnetic resonance imager |
| CN110412922A (en) * | 2019-08-12 | 2019-11-05 | 浙江理工大学 | The integrated circuit control system of tactile dot matrix stimulating apparatus |
| CN209679307U (en) * | 2018-04-09 | 2019-11-26 | 英泰诺维慧健医疗科技(重庆)有限公司 | The magnetic vibration thermal cure instrument of the multiple output channels of flexibly configurable |
| CN110537899A (en) * | 2019-09-29 | 2019-12-06 | 北京理工大学 | Tactile stimulation module and multichannel tactile stimulation device |
| CN110609604A (en) * | 2018-06-15 | 2019-12-24 | 意美森公司 | Vibration generation and braking |
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413504A (en) * | 2013-07-29 | 2013-11-27 | 中国科学院电工研究所 | Mechanical dot-matrix displayer |
| CN104460983A (en) * | 2013-09-18 | 2015-03-25 | 意美森公司 | Orientation adjustable multi-channel haptic device |
| CN107252525A (en) * | 2017-04-28 | 2017-10-17 | 上海交通大学 | A kind of multichannel electrical stimulation device based on EMG feedback |
| US20190278428A1 (en) * | 2018-02-27 | 2019-09-12 | Chiun Mai Communication Systems, Inc. | Electrical device with piezoelectric elements communicating haptically and audibly with user |
| CN209679307U (en) * | 2018-04-09 | 2019-11-26 | 英泰诺维慧健医疗科技(重庆)有限公司 | The magnetic vibration thermal cure instrument of the multiple output channels of flexibly configurable |
| CN110609604A (en) * | 2018-06-15 | 2019-12-24 | 意美森公司 | Vibration generation and braking |
| CN109106370A (en) * | 2018-09-19 | 2019-01-01 | 北京理工大学 | Haptic stimulus device and tactile mind map spectral measurement system |
| CN109708810A (en) * | 2019-02-21 | 2019-05-03 | 钛深科技(深圳)有限公司 | A kind of apparatus and system for film tactile sensing chip testing |
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Application publication date: 20200616 |