CN106406297A - Wireless electroencephalogram-based control system for controlling crawler type mobile robot - Google Patents

Wireless electroencephalogram-based control system for controlling crawler type mobile robot Download PDF

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Publication number
CN106406297A
CN106406297A CN201610629846.0A CN201610629846A CN106406297A CN 106406297 A CN106406297 A CN 106406297A CN 201610629846 A CN201610629846 A CN 201610629846A CN 106406297 A CN106406297 A CN 106406297A
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wireless
mobile robot
brain
control system
control
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莫宏伟
张经睿
马建梅
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Harbin Engineering University
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Harbin Engineering University
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/0011Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots associated with a remote control arrangement
    • G05D1/0016Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots associated with a remote control arrangement characterised by the operator's input device
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/0011Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots associated with a remote control arrangement
    • G05D1/0022Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots associated with a remote control arrangement characterised by the communication link
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/02Control of position or course in two dimensions
    • G05D1/021Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0276Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • G06F3/015Input arrangements based on nervous system activity detection, e.g. brain waves [EEG] detection, electromyograms [EMG] detection, electrodermal response detection

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurology (AREA)
  • Neurosurgery (AREA)
  • Computing Systems (AREA)
  • Human Computer Interaction (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

The invention belongs to the field of brain computer interface application control of motor imagery, and specifically relates to a wireless electroencephalogram-based control system for controlling a crawler type mobile robot. The wireless electroencephalogram-based control system for controlling the crawler type mobile robot includes eight conductive electrode caps used for detecting brain waves which collect and transmit brain waves, a wireless multi-parameter synchronizer that receives electroencephalogram signals, a mobile computing terminal that processes brain wave signals and sends control signals and the crawler type mobile robot that is wirelessly controlled, wherein the mobile computing terminal runs inside an algorithm analysis program that analyzes brain waves and a control program used for sending the electroencephalogram control signals to the crawler type mobile robot. The control system provided by the invention uses wireless head-mounted few-electrode cap to detect the brain waves, greatly simplifies preparation difficulty of brain wave detection without influencing a brain wave detection effect, and an equipment tester who wears the electrode caps can conveniently and freely rotate the head and neck.

Description

A kind of control system based on wireless brain electric control caterpillar mobile robot
Technical field
The invention belongs to the brain computer interface application control field of Mental imagery is and in particular to a kind of be based on wireless brain electric control The control system of caterpillar mobile robot.
Background technology
Realize controlling the trial of external equipment a lot of using brain-computer interface and using Mental imagery.But for ensureing to receive The quality of E.E.G, existing a lot of methods are all based on wired E.E.G acquisition system, using the collection of multichannel E.E.G, therefore may be used To be absorbed in the identification to E.E.G and sorting algorithm research.Such system actual not done well using scene of distance Go out adjustment.When outside multivariant sports equipment is controlled by Mental imagery, multichannel E.E.G detecting electrode cap and because Multi-channel detection and a lot of signal transmssion lines of being connected with analytical equipment can have a strong impact on range of activity and the equipment of the standby person of examination Use scene.The standby person of examination can only control external equipment by Mental imagery, and is not easy to Real Time Observation external movement equipment Motion simultaneously makes feedback control at any time, so that whole control becomes opened loop control rather than more stable closed loop control.Especially It is to control this multivariant sports equipment of caterpillar mobile robot, the standby person of examination needs Real Time Observation mobile robot State of doing exercises and environment about control the imagination to instruct rather than planned in advance to send to robot at any time Instruction, the effect of at this moment closed loop control will be far better than opened loop control.
Content of the invention
It is an object of the invention to provide a kind of for the multivariant caterpillar mobile robot of real-time control based on The control system of wireless brain electric control caterpillar mobile robot.
The object of the present invention is achieved like this:
A kind of control system based on wireless brain electric control caterpillar mobile robot, leads including 8 for detecting E.E.G Electrode cap is collected brain wave and is sent brain wave, accepts the wireless multiple parameter lock unit of EEG signals, processes eeg signal And send mobile computing terminal and the caterpillar mobile robot by controlled in wireless of control signal;Described mobile computing terminal The control to the Algorithm Analysis program of analysis E.E.G with for brain electric control signal being issued caterpillar mobile robot for the internal operation Processing procedure sequence.
Described eeg signal acquisition device is CM-3817-1035 electroencephalograpcap cap.
Described brain electricity wireless base station apparatus and wireless receiving EEG Amplifier Model are Neusen.W, are derived from for collecting The EEG signals that electrode cap receives, after basic Filtering Processing, brain wave signal are transferred to wireless multiple parameter by wifi Lock unit.
The described wireless multiple parameter lock unit model accepting EEG signals is Neusen.Triggerbox for receiving The EEG signals sending from brain wave signal amplifier, and as eliminating the terminal of signal delay, after treatment, will eliminate wireless The wireless brain wave data of transmission delay passes to mobile computing terminal through wired USB serial ports.
Described process eeg signal and to send the mobile computing terminal of control signal be one equipped with matlab2014a The portable computer of above version software.
Described caterpillar mobile robot has two crawler belts in left and right to provide movement and the steering of robot, in front-wheel Also has the crawler belt of a rotation, it, around front-drive, realizes the movement of complicated landform outside the crawler belt at place.
In whole E.E.G control system, the standby person of examination controls the linear rows of caterpillar mobile robot using Mental imagery Walk, left and right turn and the rotation rotation of crawler belt and stopping.
The beneficial effects of the present invention is:
1st, detect E.E.G using the few electrodes cap of wireless head-band, big in the case of not affecting E.E.G Detection results Simplify greatly the preparation difficulty of E.E.G detection, make the examination wearing electrode cap convenient can rotate incidence freely for person. The detection E.E.G of few electrode also makes whole signal detection quality be easier control.
2nd, the feature extraction to discretization E.E.G information and classification are using the algorithm being specifically designed for few electrode brain wave signal.Pin Make few electrode detection E.E.G system acceptable accurate, fast on the premise of reducing brain wave electrode the brain electric-examination method of determining and calculating of few electrode Identify each action of Mental imagery fastly, reduce the peripheral equipment control based on E.E.G detection and transport in real work production Difficulty.
3rd, the present invention can be used in remotely ground environment detection in real time it is possible to overcome complex ground face ring Border.In addition, the present invention can be also used for supplemental training, for improving the Motor execution ability of trainer.
Brief description
Fig. 1 is the overall theory diagram of the present invention;
Fig. 2 is the external interface figure of the present invention final link caterpillar mobile robot.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
The invention discloses a kind of control system based on wireless brain electric control caterpillar mobile robot.System includes EEG signal collecting unit, signal processing control unit and caterpillar mobile robot.EEG signal collecting unit includes 8 and leads brain electricity Cap, EEG amplifier.Signal processing control unit includes wireless multiple parameter lock unit, mobile computing terminal.Left by Mental imagery The movement combination of the right hand and left and right foot controls the rotation of the start and stop, left/right rotation and the rotatable crawler belt of front-wheel of caterpillar mobile robot Turn.The present invention can be used in remotely ground environment detection in real time it is possible to overcome complex ground environment.In addition originally Invention, because identifying the Mental imagery of 4 limbs, can be used for the executive capability of supplemental training human motion.
A kind of control system based on wireless brain electric control caterpillar mobile robot, including EEG signal collecting unit, believes Number processing system, and caterpillar mobile robot.The wear-type brain electricity that described EEG signal collecting unit includes one 8 leading is adopted Collection cap and a wireless EEG amplifier.Described signal processing system includes a wireless multiple parameter lock unit and a mobile meter Calculate terminal.
Wear-type brain wave acquisition cap is led in described 8, and its outward appearance is similar to common bathing cap, in corresponding eeg signal acquisition Position is provided with the wet electrode for gathering EEG signals.The 8 brain electric analoging signals leading the standby person of wear-type brain wave acquisition cap collection examination, And signal is reached EEG amplifier by shorter wireline interface.
Described EEG amplifier, is positioned over 8 rear ends leading wear-type brain wave acquisition cap, and in examination, standby person correctly wears brain electricity During collection cap, EEG amplifier is located at the back side of head portion of the standby person of examination.EEG amplifier uses Neusen.W model.The EEG of this species Amplifier has small volume, lightweight, fast operation and the high feature of operational precision, and it uses at wireless wifi transmission EEG signals to be sent after reason.The simulation EEG signals being gathered by brain wave acquisition cap are transferred in EEG amplifier, amplifier It is carried out with denoising, amplifies and discretization, the brain wave digital quantity of final output numerical discretization, and passed through wifi signal It is sent to wireless multiple parameter lock unit.
Described wireless multiple parameter lock unit, using Neusen.Triggerbox model.Inside this wireless multiple parameter lock unit There is router feature, as the transmitting focus of wifi, send in real time wifi signal, in order to EEG amplifier by the brain of discretization Electric signal transmission is to wireless multiple parameter lock unit.In addition, unlimited multiparameter lock unit can be after simulation EEG signals arrive, to it Compensation is made in the delay of signal, to ensure to try the Visual Observations Observations point of standby person and the EEG signals in corresponding moment coupling.
Described mobile computing terminal is used for locating the dispersion number value EEG signals that reason wireless multiple parameter lock unit transmits.Move Dynamic computing terminal is a portable computer, and computer internal operation is used for detecting and identify the algorithm routine of brain wave signal.Algorithm Brain wave signal is carried out, after preliminary feature extraction, its feature being classified by program, draws the imagination of the standby person's Mental imagery of examination Action.Imaginary Movement can be realized to crawler belt according to combining of action with the sequence incoming command control algolithm program of action The real-time control of formula each kinestate of mobile robot.Sorting algorithm in the present invention can sort out both legs and both hands four The Mental imagery of limbs, therefore compound mode are enriched with composite sequence, can control the equipment of multi-dimensional movement degree of freedom.
Described caterpillar mobile robot has four crawler belts, including every side respectively by the active force of two motor wheel drive Crawler belt and by the rotatable crawler belt coaxially turning to wheel drive with front-wheel.Active force crawler belt is used for driving the advance of mobile robot, Turn left and turn right;Rotatable crawler belt is used for reply needs to raise the complicated landform on mobile robot chassis, simultaneously as follower Part coordinates the steering of active force crawler belt.The control instruction of caterpillar mobile robot it has been specified that it is stipulated that:One effectively controls Instruction must be O (xxxx, yyyy, zzzz) form, and an above control instruction effectively and becomes a control bag.Wherein, institute Instruction is had to be that the packet header in one effective control bag is capitalization English letter O with ASCII character communication.The symbol in bag is controlled to include Number and comma be English DBC case.Xxxx, yyyy, zzzz are the kinestate of caterpillar robot different motion dimension respectively Vertically.Xxxx is mobile robot straight-line travelling speed controlling numerical value, and scope is -038 to 0038, and on the occasion of for advancing forward, 0 is Stop motion, negative value is to travel rearwardly.Yyyy controls numerical value for mobile robot turning velocity, and scope is -180 to 180, positive number Represent and turn right, negative represents, absolute value is bigger, the corresponding turning velocity turning to is bigger.Zzzz is to control front-wheel rotatable Crawler belt rotating speed controls numerical value, and scope is -115 to 114, vertical positive and negative represents different direction of rotation.Rotary speed controls The PWM of command mappings to rotary electric machine drive module controls dutycycle, and absolute value is bigger, and the corresponding turning velocity turning to is faster. Signal processing control unit uninterruptedly sends control instruction to outside every 500ms.Resting state or the without motion imagination control During operation, signal processing control unit sends O (0000,0000, -001) to outside.
Based on the control system of wireless brain electric control caterpillar mobile robot, 8 lead E.E.G gathers the standby person's of cap collection examination Mental imagery signal, collects original simulation brain wave signal, and be transferred to by physical signal line be fixed on brain electricity cap rear EEG amplifier.After EEG amplifier accepts original analog EEG signals, it is filtered, by signal of blinking, invalid noise Filter, subsequently filtering signal is amplified.Signal discrete finally will be amplified, wireless multiple parameter will be transferred to by wifi synchronous Device.
Unlimited multiparameter lock unit accepts the discretization numerical value from EEG amplifier as wifi hotspot, according to set The EEG signals that sequential is caused because transmitting brain wave data using wireless wifi with frequency compensation postpone skew.Wireless multiple parameter is same Step device will gather, and the imagination of the brain wave data after filtering and discretization and examination standby person react to compensate and arrived after the agreement moment, just will mend EEG signals after repaying pass through USB transmission wire transmission to mobile computing terminal.
Run, in mobile computing terminal, the sorting algorithm having exclusively for the brain wave acquisition Design of Signal under few passage, do not affect On the premise of nicety of grading, the discrete EEG signals after compensating are carried out pretreatment, feature extraction and classification.Finally identify examination Standby person's real-time Mental imagery action and Imaginary Movement sequence, and become control signal to be sent to control the information extracting to refer to Make program.
The Mental imagery signal that the acceptance of control instruction program is gone out by sorting algorithm taxonomic revision, and according to following algorithm controls For:
Left lower limb->Left hand, caterpillar mobile robot turns left;
Left lower limb->The right hand, caterpillar mobile robot is turned right;
Right lower limb->Left hand, the rotatable crawler belt of caterpillar mobile robot rotates forward;
Right lower limb->The right hand, the rotatable crawler belt of caterpillar mobile robot rotates backward;
Left lower limb->Right lower limb->Left lower limb->Right lower limb ..., i.e. continuous alternately imagination left and right lower limb motion, caterpillar mobile robot Just march forward.
Finally, Mental imagery signal is converted into the control instruction to caterpillar mobile robot, and system will by serial ports Control instruction is sent to bluetooth sending module.Bluetooth receptions module in bluetooth sending module and caterpillar mobile robot is Pairing.Therefore, the bluetooth of caterpillar mobile robot installation that what bluetooth sending module will continue be sent to control instruction connects Receive module.
Match with bluetooth sending module in signal processing system equipped with one inside caterpillar mobile robot Bluetooth receptions module.This Bluetooth receptions Module-embedding in caterpillar mobile robot, in real time etc. to be received from bluetooth transmission The control instruction of module, parses control instruction according to control protocol, and sends the PWM control of corresponding dutycycle to motor drive module Signal processed, from real-time control caterpillar mobile robot.

Claims (7)

1. a kind of control system based on wireless brain electric control caterpillar mobile robot it is characterised in that:Including for detecting The conductive polar cap in the 8 of E.E.G is collected brain wave and is sent brain wave, accepts the wireless multiple parameter lock unit of EEG signals, processes brain Electric wave signal simultaneously sends mobile computing terminal and the caterpillar mobile robot by controlled in wireless of control signal;Described movement Computing terminal internal operation is to the Algorithm Analysis program of analysis E.E.G with for brain electric control signal is issued crawler-type mobile machine The control program of device people.
2. a kind of control system based on wireless brain electric control caterpillar mobile robot according to claim 1, it is special Levy and be:Described eeg signal acquisition device is CM-3817-1035 electroencephalograpcap cap.
3. a kind of control system based on wireless brain electric control caterpillar mobile robot according to claim 1, it is special Levy and be:Described brain electricity wireless base station apparatus and wireless receiving EEG Amplifier Model are Neusen.W, for collecting from electricity The EEG signals that polar cap receives, after basic Filtering Processing, brain wave signal are transferred to wireless multiple parameter by wifi same Step device.
4. a kind of control system based on wireless brain electric control caterpillar mobile robot according to claim 1, it is special Levy and be:The described wireless multiple parameter lock unit model accepting EEG signals is Neusen.Triggerbox for receiving The EEG signals sending from brain wave signal amplifier, and as eliminating the terminal of signal delay, after treatment, will eliminate wireless The wireless brain wave data of transmission delay passes to mobile computing terminal through wired USB serial ports.
5. a kind of control system based on wireless brain electric control caterpillar mobile robot according to claim 1, it is special Levy and be:Described process eeg signal and to send the mobile computing terminal of control signal be one equipped with matlab2014a The portable computer of above version software.
6. a kind of control system based on wireless brain electric control caterpillar mobile robot according to claim 1, it is special Levy and be:Described caterpillar mobile robot has two crawler belts in left and right to provide movement and the steering of robot, in front-wheel Also has the crawler belt of a rotation, it, around front-drive, realizes the movement of complicated landform outside the crawler belt at place.
7. a kind of control system based on wireless brain electric control caterpillar mobile robot according to claim 1, it is special Levy and be:In whole E.E.G control system, the standby person of examination controls the straight line moving of caterpillar mobile robot using Mental imagery, The rotation of left and right turn and rotation crawler belt and stopping.
CN201610629846.0A 2016-08-03 2016-08-03 Wireless electroencephalogram-based control system for controlling crawler type mobile robot Pending CN106406297A (en)

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CN107813307A (en) * 2017-09-12 2018-03-20 上海谱康电子科技有限公司 Mechanical arm control system based on Mental imagery EEG signals
CN108399006A (en) * 2018-02-11 2018-08-14 广东欧珀移动通信有限公司 Signal processing method and related product
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CN112315744A (en) * 2020-11-24 2021-02-05 中国医学科学院生物医学工程研究所 Multi-degree-of-freedom cooperative movement upper limb exoskeleton instruction method based on motor imagery
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CN115714832A (en) * 2022-10-24 2023-02-24 南京航空航天大学 Operation method of telephone dialing system based on steady-state visual evoked potential

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CN107813307A (en) * 2017-09-12 2018-03-20 上海谱康电子科技有限公司 Mechanical arm control system based on Mental imagery EEG signals
CN108399006A (en) * 2018-02-11 2018-08-14 广东欧珀移动通信有限公司 Signal processing method and related product
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CN112315744A (en) * 2020-11-24 2021-02-05 中国医学科学院生物医学工程研究所 Multi-degree-of-freedom cooperative movement upper limb exoskeleton instruction method based on motor imagery
CN114536361A (en) * 2022-02-22 2022-05-27 上海睿触科技有限公司 Brain-computer interface robot motion control method
CN115005780A (en) * 2022-04-22 2022-09-06 北京秋满实医疗科技有限公司 Control system based on wireless multifunctional monitor
CN115714832A (en) * 2022-10-24 2023-02-24 南京航空航天大学 Operation method of telephone dialing system based on steady-state visual evoked potential

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