CN204808200U - Multi -functional wearing formula human -computer interaction input device based on MEMS acceleration sensor - Google Patents

Abstract

The utility model discloses a multi -functional wearing formula human -computer interaction input device based on MEMS acceleration sensor, this equipment belong to computer human -computer interaction input interface field, have multiple computer peripheral equipment functions such as mouse, handle, gyro wheel. The design adopts MMA7361 acceleration sensor response palm at X axle, the ascending acceleration in Y axle side, again with the analog signal processing of acceleration sensor output convert to user's palm inclination gesture, rotation angle speed, motion state parameter such as acceleration rotates, the corresponding control algorithm of functional mode (mouse, handle, quadriversal gyro wheel and self -defined keyboard) the dynamic call selected according to the operator to the gesture motion analysis processes carries out, realize different input device functions. The utility model discloses can design the various overall dimension that dress of becoming to be convenient for, procedure internal design the sleep awaken the function up, occasions such as meeting, classroom, exhibition room are particularly suitable for, have wide application prospect and important research worth.

Description

Based on the multi-functional Wearable man-machine interaction input equipment of MEMS acceleration transducer

Technical field

The utility model belongs to computer man-machine interacting input interface field, it is characterized in that: the controlling functions with mouse, handle, four way rollers, the multiple PC peripheral hardware of customizing keyboard, provides user a kind of brand-new interactive mode.

Background technology

In recent years, dull and stereotyped mobile device, three dimensional navigation device, digitizing Set Top Box popular, makes traditional mechanical type, photo-electric, laser type mouse can not meet the needs of the electronic product of develop rapidly.Traditional mouse must rely on the desktop of opposed flattened normally to use, and shortcoming is the scope limiting user, and long-time use also can cause the swelling of hand joint even " mouse hand ".People are more ready to utilize hand positions and computing machine, flat board, navigating instrument or other smart machines to carry out alternately by taken away from desktop.Staff is free to move at three dimensions, rotate, gesture of waving, and manipulation computer becomes more vivid comfortable.

Given this, patent publication No. 202838201 discloses one " realizing the air mouse of motion-sensing based on Gravity accelerometer ".This design is by the acceleration transducer detection acceleration of gravity information of handheld terminal, computer radio receiving end is sent to through wireless module again by after data processing circuit process information, operation in conjunction with button drives computer cursor, and such as mouse right and left key, screen regional amplify.But shortcoming of this design is apparent, first function ratio is more single and not easily expand, and secondly the complicated cost of hardware design is high, moreover the information obtained after wireless module sends, drive cursor then to shake again wayward greatly.

Summary of the invention

For the shortcoming that patent publication No. 202838201 designs, software adopts graphical Virtual Instrument Program software LabVIEW (LaboratoryVirtualInstrumentEngineeringWorkbench), the analogue enlargement algorithm of design mouse, handle, four way rollers and customizing keyboard, hardware adopt MEMS (Micro-Electro-MechanicalSystem) acceleration transducer and CC2540 low-power consumption Bluetooth system collection and send acceleration information, realizing multi-functional switchable man-machine interaction input equipment.

It is specific as follows that the utility model solves the technical scheme that its technical matters adopts:

Design adopts the acceleration of MMA7361 acceleration transducer inducing palm in X-axis, Y direction, the analog signal processing that degree of will speed up sensor exports again converts the motion state parameters such as obliquity and attitude, rotational angular velocity, rotation acceleration of user's palm to, according to functional mode (mouse, handle, four way rollers and customizing keyboard) the dynamic call corresponding control algolithm that operator selects, analyzing and processing is carried out to gesture motion, realize different input equipment functions.

The design is divided into two parts, and the design of handheld terminal hardware and PC hold the design of software.

Handheld terminal hardware forms primarily of MMA7361 sensor assembly, button group, pilot lamp, CC2540 low-power consumption Bluetooth system and lithium battery.It is designed to the form of bracelet, and wherein sensor, processor, bluetooth, pilot lamp, lithium battery are integrated on a miniature pcb board, are placed in the top of bracelet, when wearing and forefinger place linear vertical.Button group is placed in the left side of bracelet, is affixed on the centre of the palm when wearing, and four fingers are bending just in time can operation push-button.Wherein button group is made up of two groups of buttons, and I group button has three buttons, these three functional modes of corresponding mouse, handle, roller; II group button has two buttons, is modifier key, when such as equipment works in mouse mode, corresponding to the left and right press key function of mouse.

The two-way AD port of CC2540 low-power consumption Bluetooth system connects X-axis, the Y-axis analog voltage output terminal of MMA7361 sensor assembly respectively, and five road IO ports connect five buttons.Two miniature LED light of design are used separately as power supply instruction and communication instruction, and lithium battery is used for system power supply.

During real work, the right hand (or left hand) the palm place plane of operator, should perpendicular to computer screen again perpendicular to desktop, and also namely the X-axis of MMA7361 acceleration transducer is parallel to screen, Y-axis normal to screen.The palm of operator deflects left, deflect to the right, upward deflect, deflect down and just in time correspond to screen cursor, upwards, move down left to the right.

PC holds software to adopt graphical Virtual Instrument Program software LabVIEW to programme, and whole program adopts the mode of multi-thread programming, and binding events structure, Message Processing, queue and notification technique and producer consumer pattern, build program frame.First the packet sent by blue-teeth data capture program reception handheld terminal, through signal transacting, converts the information such as corresponding angle, angular velocity to by the magnitude of voltage of X-axis Y-axis.Again according to the mode of operation that user key-press is selected, the corresponding mode of operation control algolithm of dynamic call, realizes corresponding computer peripheral equipment function.Wherein, what mode of operation control algolithm was called is mouse_eventAPI device Drivers under Windows system.In addition, software provides customizing keyboard function, user can select keyboard in two of a software interface drop-down list, such as selects PageUp, PageDown, during real work, the function that II group button is corresponding is the function expressed by keyboard PageUp, PageDown.

Compared with prior art, the beneficial effects of the utility model are:

1. design adopts the mode that attitude induction controls, and by several functions algorithm fusion together, realize the controlling functions of multiple computer peripheral equipment, novel form, structure is simple, and accurate positioning, interactivity is strong.

2. equipment, a multiple interactive function, avoid the trouble that user changes back and forth in specific occasion, and volume is little, cost is low, easy to operate.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated:

Fig. 1 is the utility model perspective view;

Fig. 2 is the utility model master control borad circuit structure block diagram;

Fig. 3 is the utility model system architecture diagram;

Fig. 4 is mouse performance Schema control algorithm flow chart;

Fig. 5 is handle mode of operation control algolithm process flow diagram;

Fig. 6 is four way roller mode of operation control algolithm process flow diagrams.

In figure, 1-power light, 2-communication pilot lamp, 3-governor circuit, 4-function button, 5-modifier key, 6-bracelet clasp, 7-MicroUSB charging inlet

Embodiment

Specific embodiment described is below only for illustration of the utility model, and conduct does not limit.

With reference to Fig. 1, the utility model the hardware design becomes a bracelet, is worn on the palm of operator.The material of bracelet can use medical grade silicon rubber, not only lightly, easily processes, and wearing comfort, nontoxic.Bracelet is primarily of button group and (3) governor circuit two part composition.In button group, three buttons near finger are (4) function button, are mousebutton, handle button and roller button respectively.The action of three key position handled easily person forefingers, middle finger and the third fingers arranging, push-button type can select film key or touch key, and the utility model selects touch key for the time being.During device power work, if press without any button, system is in idle pulley, press mousebutton, system jumps to mouse performance pattern, if now press any two buttons, system rebound idle pulley simultaneously, if press three buttons simultaneously, system jumps to customizing keyboard mode of operation.Remaining two buttons is (5) modifier keys, and such as system works is when mouse mode, and these two keys serve as mouse right and left key.(4) function button, (5) modifier key are connected with (3) governor circuit.(1) power light, (2) communication pilot lamp are two pilot lamp of design on (3) governor circuit.(1) power light indicates as device power supply (DPS), and whether (2) communication pilot lamp instruction communication sets up.(6) bracelet clasp makes bracelet more firmly lie in operator on hand.(7) MicroUSB charging inlet connects (3) governor circuit, when connecting outside MicroUSB, can carry out equipment charge.

No matter be as mouse, multi-media input equipment or game peripheral, the design facilitates the operation of user, for user provides a brand-new interactive mode, dresses and conveniently relies on mouse pad just can complete abundant input action without the need to relying on desktop.Especially, when user is in speech or meeting, need the several button operations coordinating keyboard, at this moment only need selection key in software drop-down list in advance, avoid the trouble that user switches back and forth.

With reference to Fig. 2, it is the master control borad of system.Master control borad is designed to the circuit module that is only had unitary coin-size, during practical set, is embedded in bracelet plastics inner.Master control borad forms primarily of the peripheral circuit of CC2540 single-chip, MMA7361 acceleration transducer, power circuit, LED light and necessity.Consider the requirement of circuit low-power consumption, adopt TI company CC2540 low-power consumption Bluetooth system single-chip, low in energy consumption to microampere order, CC2540 inside is integrated with enhancement mode 8051 microcontroller and 2.4GHz low-power consumption bluetooth 4.0.Power acquisition 3.3V miniature lithium battery, chargeablely recycles.LED light has two, and one is red power light, and another is green bluetooth communication pilot lamp, and when bracelet and PC connect, green bluetooth pilot lamp is lighted.When designing Single Chip Microcomputer (SCM) program, if detect, bracelet does not have action within the time of setting, and CC2540 auto-steering sleep pattern, once bracelet action is transfinited, CC2540 is waken up automatically.Reduce power consumption so to a great extent.

Wherein, the two-way AD of CC2540 is responsible for the X-axis Y-axis voltage gathering MMA7361 acceleration transducer, and five road IO are responsible for 5 push button signallings gathering button group.Signal after collection is packed in the lump and to be sent through Bluetooth circuit, and with the PC search bluetooth equipment of bluetooth, connect, image data, passes to corresponding program and perform after process.

With reference to Fig. 3, system adopts three levels in osi model structure.Be divided into session layer, processing layer, application layer.Wherein session layer is responsible for hardware input and software man-machine interaction; The process such as Data Analysis, filtering that processing layer will collect, then sends to the form of notice and respectively calls algorithm, the corresponding control algolithm of dynamic call; Application layer mainly connects upper layer software (applications) and Windows system api interface.

Specifically describe operating process of the present utility model and principle of work below:

First, operator needs the application program that mounting design person provides on PC, opens application program after successful installation, and click start button, operator can see when the green indicating lamp on bracelet is bright, shows bluetooth communication success.First time, when using, operator need click application program calibration knob, and application program can point out user to carry out pick up calibration work step by step, until calibrate successfully.The reason of calibration is described here, and due to acceleration transducer impact by magnetic field and gravity field in different regions, there is nuance in the reference voltage of the reference voltage that X-axis Y-axis Z axis exports and demarcation.

Then, click application program and button is set, set sampling parameter respectively (as sampling rate, hits), sensor parameters (as transducer sensitivity), (the X-axis Y-axis sensitivity of mouse parameter, X-axis Y-axis cursor speed), handle parameter (sensitivity of X-axis Y-axis), roller parameter (sensitivity of X-axis Y-axis), save button is clicked after setting, the parameter that user preserves can be stored in system file with the form of Windows configuration file (ini file) by application program, next time starts application program, program can read these configuration datas automatically, without the need to resetting

If operator does not press bracelet function key, Application Status hurdle panel can show current system and be in idle pulley, if press mouse mode function key, Application Status hurdle panel shows current system immediately and is in mouse mode, and bracelet just has the operating function of mouse.Operator's palm deflects left, deflect to the right, upward deflect, deflect down cursor just can be driven to move to corresponding direction, and the translational speed of cursor is relevant with the angular velocity that the cursor speed that user is arranged and user's palm deflect.

With reference to Fig. 4, in mouse mode control algolithm, first program carries out start and stop detection, then differentiates the direction of gesture and the angular velocity of hand deflection, finally X-axis Y-axis angular velocity signal is converted respectively to the displacement of screen cursor, drive mouse_event cursor to move API.Meanwhile, program loop detects mouse right and left key, drives mouse_event mouse right and left key API.

Switch bracelet if want to handle function, user only need directly press handle function key, and Application Status hurdle panel shows current system immediately and is in handle pattern.The action of handle is relevant with X-axis Y-axis deflection angle, X-axis positively biased angle simulating handle button to the right, and X-axis negative bias angle simulating handle button left, Y-axis is similar.

With reference to Fig. 5, in handle Schema control algorithm, program obtains X-axis Y-axis angle signal, and judge gesture direction, call the API of triggering/reseting handle, similar, the change of Programmable detection modifier key, calls the API of triggering/reset keyboard.

Similar, with reference to Fig. 6, system works is when roller pattern, and four way roller rolling amplitudes are relevant with the deflection angle of palm, and direction is determined by X-axis Y-axis.First program obtains X-axis Y-axis obliquity information, then judges gesture direction respectively, finally calls the mouse_eventAPI of horizontal roller and vertical wheel.

Above-mentioned embodiment is the embodiment of deviser's empirical tests, makes any equivalent replacement, amendment all should within protection domain of the present utility model within spirit of the present utility model and principle.

Claims (3)

1. a multi-functional Wearable man-machine interaction input equipment, is made up of the bracelet based on MEMS acceleration transducer, it is characterized in that:

Bracelet comprises:

Be arranged on 3 functional mode buttons on bracelet and 2 modifier keys, the function being respectively used to bracelet switches and specific miscellaneous functions, and button is connected with governor circuit;

Be arranged on the governor circuit module of bracelet inside, this module is formed primarily of 1 CC2540 low-power consumption Bluetooth system single-chip, 1 MMA7361 three-axis acceleration transducer chip, 1 piece of lithium battery, 2 LED light, MMA7361, LED and CC2540 connect, lithium battery is as the power supply unit of whole system, MMA7361 gathers palm acceleration information in the x, y direction, and CC2540 gathers and sends the analog voltage signal of MMA7361 output and the digital signal of button group output;

Bracelet adopts medical grade silicon rubber to process, in flat circular.

2. multi-functional Wearable man-machine interaction input equipment according to claim 1, is characterized in that: described button is arranged on the outside of bracelet, and when wearing, button is parallel with palm.

3. multi-functional Wearable man-machine interaction input equipment according to claim 1, is characterized in that: described governor circuit module is embedded in bracelet inside, and bracelet arranged outside has transparent plastic cover.