Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of body-sensing device, game machine withAnd limb action signal processing method.The internal structure for simplifying body-sensing device and game machine, reduces costs, and improvesCost performance, while the time delay that signal is transmitted between body-sensing device and game host can also be reduced.
Technical solution used by the present invention solves the problems, such as it is:
In a first aspect, the present invention provides a kind of body-sensing devices, comprising:
Sensor module, for acquiring limb action signal and electromyography signal；
Preprocessing module, for the limb action signal and electromyography signal to be pre-processed, the pretreatment mouldBlock is connect with the sensor module；
Wireless sending module, for send it is preprocessed after the limb action signal and electromyography signal, it is describedWireless sending module is connect with the preprocessing module；
First power module, first power module and the sensor module, preprocessing module and wireless transmissionModule connection.
Further, the sensor module includes 3-axis acceleration sensor and electrode.
Further, the sensor module further includes first resistor, second resistance and first capacitor, the 3-axis accelerationCovers disposed on sensor be equipped with Clock Signal pin, data signal pin, interrupt signal pin, chip select pin, analog end power pins,Digital end power pins, address pin；
One end of the first resistor is connected to the Clock Signal pin, and the other end is connected to the first power supply mouldBlock；One end of the second resistance is connected to the data signal pin, and the other end is connected to first power module, describedOne end of first capacitor is respectively connected to the chip select pin, analog end power pins, digital end power pins and address and drawsFoot, the other end are connected to ground terminal, first power module respectively with the chip select pin, analog end power pins, digital endPower pins and address pin connection；
The Clock Signal pin, data signal pin and interrupt signal pin are additionally coupled to the preprocessing module.
Further, the preprocessing module includes the first amplifying circuit, the second amplifying circuit and filter circuit, and described theOne amplifying circuit is connect with second amplifying circuit；Second amplifying circuit is connect with the filter circuit；
First amplifying circuit includes instrument amplifier, operational amplifier and the first adjustable resistance, and the instrument is putBig device includes output pin, gain end pin；One end of first adjustable resistance is connected to gain end pin, anotherEnd is connected to the operational amplifier；The output pin is connect with second amplifying circuit；
The filter circuit includes the first trapper and the second trapper, first trapper and second trapperConnection.
Second aspect, the present invention provides a kind of somatic sensation television game machine device, including game host and above-mentioned body-sensing device,Wherein, the game host includes:
Wireless receiving module, for from the limb action signal and myoelectricity letter for receiving the wireless sending module transmissionNumber；
Controller, for being converted into game key assignments to the limb action signal and electromyography signal, and by the gameKey assignments reaches somatic sensation television game application, and the controller is connect with the wireless receiving module；
Display module, the video for carrying out somatic sensation television game exports and audio output, the display module and the controlDevice connection processed；
Second power supply module, the second power supply module are connect with the controller.
Further, the transmission mode of the wireless receiving module and the wireless sending module is Zigbee wireless transmission.
Further, the controller is the Cortex-A8 controller for transplanting linux system.
Further, the display module includes display and loudspeaker.
The third aspect, the present invention provides a kind of limb action signal and electromyography signal processing methods, including following stepIt is rapid:
Receive come from body-sensing device limb action signal collected and electromyography signal, the limb action information andElectromyography signal is pre-processed in the body-sensing device；
Game key assignments is converted by the limb action signal and electromyography signal, and the game key assignments is reached into body-sensingGame application carries out the video output and audio output of somatic sensation television game.
Further, described to convert game key assignments for the limb action signal and electromyography signal, it further include following stepIt is rapid:
Judge the acceleration direction of the limb action signal；
If the acceleration direction is positive direction, and judges whether the positive direction has been pressed, if so, the limbs are dynamicThe key assignments for making signal bounces for negative direction, if it is not, then the key assignments of the limb action signal is pressed for positive direction；
If the acceleration direction is negative direction, and judges whether the negative direction has been pressed, if so, the limbs are dynamicThe key assignments for making signal bounces for positive direction, if it is not, then the key assignments of the limb action signal is pressed for negative direction.
Further, described to convert game key assignments for the limb action signal and electromyography signal, it further comprises the steps of:
Judge whether the electromyography signal is identified as grasping movement state, if grasping movement state, then the myoelectricity is believedNumber key assignments be to press, and reset.
The one or more technical solutions provided in the embodiment of the present invention, at least have the following beneficial effects:
The present invention provides a kind of body-sensing device, game machine and limb action signal processing methods.Body-sensing firstDevice will acquire the limb action signal that player generates, and after limb action information is pre-processed in body-sensing device,It is sent on game host, and limb action signal is converted corresponding game key assignments by game host, and game key assignments is passedTo somatic sensation television game application, the video output and audio output of somatic sensation television game are carried out.This invention simplifies body-sensing device and tripsThe internal structure of gaming machine device, reduces costs, and improves cost performance, while can also reduce between body-sensing device and game hostTransmit the time delay of signal.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, rightThe present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, notFor limiting the present invention.
It should be noted that each feature in the embodiment of the present invention can be combined with each other, in this hair if do not conflictedWithin bright protection scope.In addition, though logical order is shown in flow charts, but in some cases, it can be with notSequence in the module division being same as in system or flow chart executes shown or described step.
With the fast development of intelligent game the relevant technologies, somatic sensation television game has become a kind of leisure joy to become more and more popularHappy mode, it is a kind of novel electron game that game role is operated by the variation of player's limb action, and what it was simulated forcesTrue environment can allow player to generate a kind of sense of reality on the spot in person, to improve the authenticity and amusement of game to a greater degreeProperty.
Traditional somatic sensation television game machine manipulates light gun using player's arm to generate game signals, is then passed to game machine controlDevice generates corresponding operating, finally reaches display system again.But since light gun equipment too heavy and controller excessively falls behind, soon byIt eliminates.Current somatic sensation television game machine, mostly includes somatosensory device and game host two large divisions, user by somatosensory device intoThe movement of row all directions, game host will receive somatosensory device generation and act and the corresponding signal of generation, in game hostObject i.e. execute corresponding operating.However that all there is equipment manufacturing costs is excessively high, it is heavy to wear for current most of somatic sensation television game machineThe problem of, and will appear between somatosensory device and game host transmit signal when, be delayed larger problem.This is to somatic sensation television gameThe market of machine is universal to cause certain limitation.
Based on this, the present invention provides a kind of body-sensing device, game machine and limb action signal processing methods.It is firstFirst body-sensing device will acquire the limb action signal of player's generation, and limb action information is pre-processed in body-sensing deviceLater, it is sent on game host, and limb action signal is converted corresponding game key assignments by game host, and by game keyValue reaches somatic sensation television game application, carries out the video output and audio output of somatic sensation television game.This invention simplifies body-sensing device withAnd the internal structure of game machine, it reduces costs, improves cost performance, while body-sensing device and game host can also be reducedBetween transmit signal time delay.
A kind of body-sensing device, game machine and limb action signal processing method of the present invention are suitable for playingFamily generates signal using left hand and the right hand and carrys out direct game role, and is suitable for GBA (Game Boy Advanced) body-sensing and swimsPlay application.
Referring to Fig.1, the first embodiment of the present invention provides a kind of body-sensing device, comprising:
Sensor module 101, for acquiring limb action signal and electromyography signal；
Preprocessing module 102, for the limb action signal and electromyography signal to be pre-processed, the pretreatmentModule 102 is connect with the sensor module 101；
Wireless sending module 103, for send it is preprocessed after the limb action signal and electromyography signal, instituteWireless sending module 103 is stated to connect with the preprocessing module 102；
First power module 104, first power module 104 and the sensor module 101, preprocessing module 102And wireless sending module 103 connects.
Wherein, in the present embodiment, the sensor module 101, preprocessing module 102, wireless sending module 103 andFirst power module 104 can be set on the handle for being easy to hold, and also can be set on bracelet easy to wear, thisEmbodiment is preferably provided on bracelet easy to wear, and bracelet is two, and the right-hand man of player can wear bracelet and graspMake, when the hand of player swings bracelet, sensor module 101 can obtain acceleration to the left, to the right, forward or backward；When player, which is bent finger, generates grasping movement, sensor module 101 can obtain the electromyography signal generated under grasping movement state.The sensor module 101 uses 3-axis acceleration sensor and electrode, and 3-axis acceleration sensor can be very cleverQuick capture simultaneously acquires the limb action signal that player's left hand and right hand control bracelet generate, and electrode also very can sensitively be caughtThe electromyography signal under player's digital flexion generation grasping movement state is caught and acquires, what electromyography signal represented is hand grasping movementInformation.Wireless sending module 103 is the Zigbee transport protocol used, a kind of Zigbee transport protocol short distance, low-power consumptionWireless communication technique has many advantages, such as low-power consumption, low cost and short time-delay, can reduce limbs using Zigbee transport protocolAction signal and the time delay of electromyography signal transmission are avoided that in operation game role pause and transition in rhythm or melody sense, preprocessing module occur for player102 be to be filtered using filtering algorithm to limb action signal and electromyography signal, filters out limb action signal and fleshThe noise of part lack of standardization and generation in electric signal guarantees that limb action signal and electromyography signal can be in game hostsIt is correctly processed.In the present embodiment, preprocessing module 102 will be advanced to the limb action signal and electromyography signal of acquisitionRow amplification and filtering processing, amplify processing using amplifier for limb action signal and electromyography signal, are then filteredWave processing, the pass band of filter may be configured as between 10Hz-500Hz, and can modify passband according to the actual situationRange avoids nonstandard limb action signal and electromyography signal from impacting.
Further, in another embodiment of the present invention, the sensor module 101 includes that two 3-axis accelerations passSensor and four electrodes.
Wherein, somatic sensation television game is often acted by the left hand of player and right hand generation to control body-sensing game role, therefore leftHand and the right hand must all have sensor to acquire limb action signal and electromyography signal, in the present embodiment, setting may be selectedLeft hand completes to operate with left and right up and down, and the right hand completes the finger-guessing game or the movement of leg out of game, while the right hand is also used to completeGrasping movement, resulting signal are enough to realize the control to game role in gaming, and 3-axis acceleration sensorAlso have many advantages, such as it is small in size and light-weight, the 3-axis acceleration sensor of selection be model MMA7455 3-axis acceleration passSensor, the sensor are widely used in such as mobile phone, the stabilization of handheld game image, text and roll, laptopAntitheft, the freely falling body test of hard disk, pedometer, motion sensor etc., which is a numeral output, low energy consumption, the capacitance type micromechanical accelerometer of Signal Regulation effect is played, can be realized low-pass filter, temperature-compensating, self detection.Sensor module 101 has 4 electrodes, and the type of electrode can be surface electrode, and those skilled in the art is recognized that surfaceElectrode is suitable for measuring the myoelectricity variation generated when human motion, in the present embodiment, can be used to the myoelectricity for acquiring player's generationSignal is respectively used to extensor muscle of fingers, long extensor muscle of thumb, musculus palmaris longus and the electromyography signal for scratching the generation of side wrist song flesh of acquisition right-hand man.
Referring to Fig. 2, in another embodiment of the present invention, the sensor module further includes first resistor R1, secondResistance R2 and first capacitor C1 is provided with Clock Signal pin SCL, data signal pin on the 3-axis acceleration sensorSDI, interrupt signal pin INT1, chip select pin CS, analog end power pins AVDD, digital end power pins DVDD_IO, addressPin IADDR0；
One end of the first resistor R1 is connected to the Clock Signal pin SCL, and the other end is connected to first electricitySource module 104, one end of the second resistance R2 are connected to the data signal pin SDI, and the other end is connected to described firstPower module 104, one end of the first capacitor C1 be respectively connected to the chip select pin CS, analog end power pins AVDD,Digital end power pins DVDD_IO and address pin IADDR0, the other end are connected to ground terminal, the chip select pin CS, simulationHold power pins AVDD, digital end power pins DVDD_IO and address pin IADDR0 respectively with first power module104 connections；
The Clock Signal pin SCL, data signal pin SDI and interrupt signal pin INT1 are additionally coupled to the pre- placeManage module 102.
Referring to Fig. 5, in another embodiment of the present invention, the preprocessing module 102 includes the first amplifying circuit, theTwo amplifying circuits and filter circuit, first amplifying circuit are connect with second amplifying circuit；The second amplification electricityRoad is connect with the filter circuit；
First amplifying circuit includes instrument amplifier, operational amplifier and the first adjustable resistance R14, the instrumentAmplifier includes output pin output, gain end pin RG；One end of the first adjustable resistance R14 is connected to the increasingBeneficial end pin RG, the other end is connected to the operational amplifier；The output pin output and second amplifying circuitConnection；
The filter circuit includes the first trapper U1 and the second trapper U2, the first trapper U1 and described secondTrapper U2 connection.
Wherein, preprocessing module 102 is made of amplifying circuit and filter circuit, and amplifying circuit is used to amplify placeReason, filter circuit are used to be filtered.
Amplifying circuit is divided into the first amplifying circuit and the second amplifying circuit.First amplifying circuit include instrument amplifier,Operational amplifier and the first adjustable resistance R14 select model AD620 as instrument amplifier, model in the present embodimentLF356 is as operational amplifier, because AD620 amplifier has the high and low noise of accuracy, high input impedance and overvoltage are protectedThe characteristics such as shield, can well inhibit interference；LF356 amplifier is mainly used for composition driving circuit, further increasesThe anti-interference ability of circuit.First adjustable resistance R14 is mainly used to adjust the multiplying power of gain amplifier.The gain of first amplifying circuitCalculation formula is as follows:
Wherein, G is gain, and R14 is the first adjustable resistance, and 49.4K Ω is the sum of the resistance in the first amplifying circuit, can be withUnderstand, the sum of resistance can be different with the difference of resistance value.
Second amplifying circuit includes operational amplifier and the second adjustable resistance R18, wherein it is type that operational amplifier, which is selected,Number OP27 amplifier, model OP27 amplifier has input bias current low and the characteristics such as open-loop gain height, especially suitable for puttingBig small-signal meets the requirement of amplification electromyography signal, can adjust amplification by the second adjustable resistance R18 in the present embodimentThe multiplying power of gain.
Because electromyography signal is low-frequency weak signal, main energetic is concentrated within the scope of 50-150Hz, and frequency spectrum mainly collectsIn within the scope of 0-500Hz, in order to retain the effective frequency of electromyography signal, so filter circuit needs to filter out 500Hz or moreHigh band and 50Hz low-frequency range below.In the present embodiment, filter circuit includes the first trapper U1 and the second trapperU2, trapper select model UA741 trapper, and two model UA741 trappers constitute active double T trap circuits to filter out 50HzLow-frequency range below, and low-pass filter is constituted by R23 and C15, for filtering out the high band of 500Hz or more.ResistanceBandwidth is determined that the characterisitic parameter of trapper is as follows by K:
Wherein, the value of Q and K can be adjusted according to the actual situation, select Q=2.5, K=0.9 in the present invention.
Referring to Fig.1, in another embodiment of the present invention, a kind of somatic sensation television game machine device, including game master are providedBody-sensing device in machine and any of the above-described embodiment, wherein the game host includes:
Wireless receiving module 203, for from receive limb action signal that the wireless sending module 103 is sent andElectromyography signal；
Controller 201, for being converted into game key assignments to the limb action signal and electromyography signal, and by the tripPlay key assignments reaches somatic sensation television game application, and the controller 201 is connect with the wireless receiving module 203；
Display module 202, the video for carrying out somatic sensation television game exports and audio output, the display module 202 withThe controller 201 connects；
Second power supply module 204, the second power supply module 204 are connect with the controller 201.
Wherein, what somatic sensation television game machine device included is body-sensing device and game host two parts, and the effect of game hostLimb action signal exactly is generated to player and electromyography signal is handled, generating can be by the key of somatic sensation television game application identificationValue, and body-sensing game application is run, it carries out video output and audio output is supplied to player gaming experience.Display module 202For display and loudspeaker, display and loudspeaker be can be set on controller 201, or are arranged in controller 201Except, it can freely set in the present embodiment.
Further, in another embodiment of the present invention, the wireless receiving module 203 and the wireless transmission mouldThe transmission mode of block 103 is Zigbee wireless transmission.Wherein, the channel radio of a kind of short distance of Zigbee transport protocol, low-power consumptionLetter technology has many advantages, such as low-power consumption, low cost and short time-delay, can reduce limb action using Zigbee transport protocol and believeNumber transmission time delay, be avoided that player operation game role occur pause and transition in rhythm or melody sense.Player is dynamic by the limbs that body-sensing device generatesMake the signal data that signal and electromyography signal generate 8bit after pretreatment, then by wireless sending module 103 withZigbee protocol is sent to game host, not only increases the high efficiency communicated between body-sensing device and game host, whileIt avoids that the higher situation of signal propagation delay time occurs.
Further, in another embodiment of the present invention, the controller 201 is the Cortex- for transplanting linux systemA8 controller.
Wherein, the performance of Cortex-A8 controller is higher, power efficiency is higher, uses the processing that Cortex-A8 energy is smoothLimb action signal and operation somatic sensation television game, not will cause Caton, and carry the Platform Price phase of Cortex-A8 controllerTo cheap, the price of entire somatic sensation television game machine device can be reduced, good cost performance is provided.Linux is that one kind has portableProperty operating system, can be improved somatic sensation television game application scalability, carry out the transplanting of various GBA somatic sensation television games, bring playerMore preferably game experiencing.
Further, in another embodiment of the present invention, the display module includes display and loudspeaker.
Referring to Fig. 3, in another embodiment of the present invention, provide at a kind of limb action signal and electromyography signalReason method, comprising the following steps:
Step S1 is received and is come from body-sensing device limb action signal collected and electromyography signal, the limb actionSignal and electromyography signal are pre-processed in the body-sensing device；
The limb action signal and electromyography signal are converted game key assignments by step S2, and by the game key assignmentsSomatic sensation television game application is reached, the video output and audio output of somatic sensation television game are carried out.
Wherein, it is dynamic can to acquire the limbs that left hand and the right hand generate by three axis digital acceleration collectors respectively for body-sensing deviceMake signal and the electromyography signal generated after right finger bending is acquired by electrode, then before being sent to game hostNonstandard part in limb action signal and electromyography signal need to be filtered out by preprocessing module 102, specially first usedBandpass filtering of the passband between 10Hz-500Hz is denoised, and then carries out preposition enhanced processing to signal, later again intoRow removes motion artifacts every value circuit, and nonstandard signal is avoided to impact, and signal is finally carried out postposition enhanced processing.TripController 201 in play host is handled it after receiving limb action signal and electromyography signal to generate in body-sensingThe key assignments that game role can be manipulated in game, finally by somatic sensation television game application running game role, and will by display moduleThe vision signal and audio signal of somatic sensation television game are exported.In the present embodiment, the somatic sensation television game can be opened for QtThe GBA somatic sensation television game of hair, because Qt can be mounted on Cortex-A8 controller, and its compatibility is preferably, it is possible toReduce the cost of operation somatic sensation television game.It the use of display module 202 include display and loudspeaker, display and loudspeaker can beBuilt in Cortex-A8 controller, aesthetics can be increased, can also be external for Cortex-A8 controller, compatibility can be increased, it can rootFreely it is arranged according to player.
It is in another embodiment of the present invention, described to turn the limb action signal and electromyography signal referring to Fig. 4Game key assignments is turned to, further comprising the steps of:
Step S21 receives limb action signal and electromyography signal, executes step S22 and S23；
Step S22, judges whether the acceleration direction of the limb action signal is positive, if the acceleration direction is positiveDirection thens follow the steps S221, if the acceleration direction is negative direction, thens follow the steps S222；
Step S221, judges whether the positive direction has been pressed, if so, S2211 is thened follow the steps, if it is not, then executing stepRapid S2212；
Step S2211, the key assignments of the limb action signal bounce for negative direction；
Step S2212, the key assignments of the limb action signal are pressed for positive direction；
Step S222, judges whether the negative direction has been pressed, if so, S2221 is thened follow the steps, if it is not, then executing stepRapid S2222；
Step S2221, the key assignments of the limb action signal bounce for positive direction；
Step S2222, the key assignments of the limb action signal are pressed for negative direction；
Step S23, judges whether the electromyography signal is identified as grasping movement state, if grasping movement state, then holdsRow step S231；
Step S231, the key assignments of the electromyography signal are to press, and reset.
Wherein, in the present embodiment, since device wants pressing and bouncing for analogue-key, so letter in the same directionIt number may be pressed for the direction, it is also possible to which, for bouncing for opposite direction, each direction is distinguished with a flag bit here is thisPressing for direction or bouncing for opposite direction.Sensor is 3-axis acceleration sensor, needs the limb action signal to acquisitionAcceleration information analyzed, acceleration is reasonably determined into various key assignments, the game angle in somatic sensation television game could be controlledColor.It is then that positive direction carries out setting and acceleration is negative to acceleration by the acceleration direction determining of limb action signalDirection is set.It is understood that referred herein is the processing method of X-axis, the processing method of remaining Y-axis and Z axisIt is equally the same with the processing method of X-axis.In the present embodiment, it is also necessary to electromyography signal be extracted, first extraction myoelectricity letterNumber wavelet character amount, then including average value and variance etc. are classified by linear discriminatory analysis (LDA), are finally knownWhether the state of other hand is grasping movement state.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to above-mentioned embodiment party aboveFormula, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replaceIt changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.