CN206789278U - Army rouses - Google Patents

Abstract

The utility model provides a kind of army's drum, including the drum chamber surrounded jointly by upper and lower sympathetic response skin and cylindrical lateral wall, linear stepping motor, rings string static line, rings string, manual tension device, doppler sensor, touch sensor and main control singlechip.Wherein, linear stepping motor is fixed in cylindrical lateral wall and with ringing the connection of string static line；The one end for ringing string static line is connected with linear stepping motor, rings the string static line other end and is connected with ringing one end of string；Doppler sensor and upper sympathetic response skin are in the same plane, for perceiving the action of player, and the action of player are converted into electric signal and feeds back to the main control singlechip；Manual tension device fixes the other end of the loud string；Main control singlechip is controlled to linear stepping motor, doppler sensor and touch sensor；Touch sensor is fixed in cylindrical lateral wall, for perceiving the action of player's touch, and signal is fed back into the main control singlechip.

Description

Army rouses

Technical field

A kind of army's drum is the utility model is related to, more particularly to a kind of army's drum that can make to ring string tensioning automatically.

Background technology

Army's drum (snare drum) is percussion music color musical instrument (as shown in Figure 1) indispensable in the symphony orchestra of west, Its feature is the impact tone color that can send great identification.Why army's drum can send its beautiful sound, be Jun Gudi The sound string (snare) tightened on skin (i.e. sympathetic response musculus cutaneus).When musician taps the upper table musculus cutaneus of drum, by the sympathetic response of drum chamber and interior The vibrations of portion's air, resonant surface is vibrated and is encouraged therewith and ring Chord vibration, the army of sending rouses exclusive rustling sound.One outstanding Army's drum, should have good sound string tone color under the various impact dynamics of musician, thus generally army's drum drum head be brought to it is solid Accordatura is high, to reach optimal sympathetic response.When it reaches splendid resonance state (fine tuned), problem is following, i.e. Army is roused when stopping paragraph, if having other musical instruments to play out rouses sound similar in own pitch with army, army's drum resonant surface also can be by Vibrations, and encourage and ring string and shake therewith, annoying noise is produced, influences other players and audience.

Once it is proposed that mechanically ringing string tensioning scheme, this scheme can be loosened by the operation of musician by string is rung, Away from resonant surface (not sounding position)；Or sound string is locked by the dead-centre position of four-bar mechanism, it is attached at sympathetic response Face drum head (sounding position).But in considerable melody, such as《Arabian Nights》In the movement of suite the 3rd, the performance of army's drum is And then big section of string music group is played, and is not tensioned to percussion music hand time enough and is rung string, and is prematurely tensioned and is rung string, It can cause to ring string excited target vibrations generation noise again, be the shortcoming that can not be made the best of both worlds.Traditional mechanical tensioning needs Very important person is manually operated, but needs in the playing procedure of actual melody to realize the conversion of elastic state in a short period of time, therefore Can not be reserved to musician the too many time go it is manually operated.

Utility model content

In order to solve the above-mentioned technical problem, the utility model proposes army's drum that a kind of auto-tensioning rings string, sensor is passed through The stroke of musician is identified, before it will be played, the sound string roused by specific driving link general is tensioned, and when stopping Automatically loosen and ring string, the function of being played with reaching auxiliary musician to complete.

The utility model provides a kind of army's drum, including is surrounded jointly by upper sympathetic response skin, lower sympathetic response skin and cylindrical lateral wall Drum chamber, linear stepping motor, ring string static line, ring string, manual tension device, doppler sensor, touch sensor and master control Single-chip microcomputer；Wherein, the linear stepping motor is fixed in the cylindrical lateral wall and is connected with the loud string static line, is used for In the vertical direction tenses and loosened the loud string static line；One end of the loud string static line connects with the linear stepping motor Connect, the loud string static line other end is connected with one end of the loud string；At the doppler sensor and the upper sympathetic response skin In on same plane, the master control list is fed back to for perceiving the action of player and the action of player being converted into electric signal Piece machine is handled；The manual tension device fixes the other end of the loud string；The main control singlechip is located at the cylindrical shape In side wall, and it is connected by circuit with the linear stepping motor, the doppler sensor and the touch sensor, is used The linear stepping motor, the doppler sensor and the touch sensor are controlled in realizing；The touch Sensor is fixed in the cylindrical lateral wall, for perceiving the action of player's touch and signal being fed back into the master control list Piece machine.

In a preferred embodiment, above-mentioned army's drum also includes universal ball end and gooseneck, the doppler sensor and institute State universal ball end to be connected, the universal ball end is located at the lower section of the doppler sensor and is connected with the gooseneck；It is described Gooseneck is connected with the cylindrical lateral wall, and between the upper sympathetic response skin and lower sympathetic response skin, the gooseneck energy Any bending is so as to changing doppler sensor position spatially and angle.

Preferably, the doppler sensor is GH719 type doppler sensors.

Preferably, the linear stepping motor includes motor drive module, and the motor drive module is L298N chips.

Preferably, the main control singlechip is ARDUINO NANO single-chip microcomputers.

Brief description of the drawings

Fig. 1 is the schematic diagram of army's drum in the prior art；

Fig. 2 a and 2b respectively show the section components that the utility model provides army's drum；

Fig. 3 illustrates the section components that the utility model provides army's drum；

Fig. 4 is provided the control circuit schematic diagram of army's drum by the utility model.

In figure, 1 is drum chamber, and 2 be linear stepping motor, and 3 is ring string static line, and 4 is ring string, and 5 be sympathetic response skin, and how general 6 be Sensor is strangled, 7 be universal ball end, and 8 be gooseneck, and 9 be manual tension device, and 10 be main control singlechip, and 11 be touch sensor, 12 For power supply.

Embodiment

The utility model is described in detail with reference now to specific embodiment as shown in the drawings.For the sake of clarity, originally Text is without specific descriptions part known in those skilled in the art or structure.In addition, although with reference to specific embodiment to this reality It is described with new, it will be appreciated that, the description, which is not intended as, is limited to the utility model described embodiment.Phase Instead, the description, which is intended to covering, may include replacing in the spirit and scope of the present utility model being defined by the appended claims Change, improve and equivalent.

Fig. 2 a, 2b and Fig. 3 respectively show the critical piece that the utility model provides army's drum.With reference to Fig. 2 a, 2b and From the point of view of Fig. 3, army's drum provided by the utility model includes drum chamber 1, linear stepping motor 2, rings string static line 3, rings string 4, sympathetic response Skin 5, doppler sensor 6, universal ball end 7, gooseneck 8, manual tension device 9, main control singlechip 10, touch sensor 11 and Power supply 12.

Drum chamber 1 is surrounded by upper and lower two sympathetic response skins 5 and cylindrical lateral wall.Linear stepping motor 2 is fixed on cylindrical lateral wall Above and with ringing string static line 3 it is connected.The effect of linear stepping motor 2 is that by internal rotating conversion of motion be linear motion, from And it can tense and loosen with the vertical direction and ring string static line 3.The one end for ringing string static line 3 is connected with linear stepping motor 2 Connect, ring the other end of string static line 3 and be connected with ringing string 4.The effect for ringing string static line 3 is the straight line for transmitting linear stepping motor 2 Motion, which makes to ring string 4, to be tensioned and loosens.Upper and lower sympathetic response skin 5 is respectively positioned at the upper and lower of drum chamber 1, for being empathized by vibration.

With reference to figure 3, doppler sensor 6 is connected with universal ball end 7, and is substantially at upper sympathetic response skin 5 on same plane. Doppler sensor 6 is used for the action for perceiving player, and the action of player is converted into electric signal and feeds back to master control monolithic Machine 10 is handled.Universal ball end 7 is located at the lower section of doppler sensor 6 and is connected with gooseneck 8, and its effect is and gooseneck 8 The position spatially of doppler sensor 6 and angle are adjusted together.Gooseneck 8 is located on cylindrical lateral wall side, upper and lower Between sympathetic response skin 5, and it is connected with cylindrical lateral wall, can arbitrarily bends so as to change doppler sensor 6 spatially Position and angle, in the function of realizing auto-tensioning, loosen simultaneously, also avoid having influence on the sounding of whole musical instrument as far as possible together Ring.Manual tension device 9 is located at the both sides of drum chamber 1, be army drum per se with part, typically by keyed end and fine setting end two parts Composition.In the present embodiment, the manual tension device 9 of side has only been used, it is fixed one end for ringing string 4 that it, which is acted on, and it is another to ring string 4 The tensioning of one end is controlled with loosening by linear stepping motor 2.Main control singlechip 10 is located in cylindrical lateral wall, its by circuit with Power supply 12, linear stepping motor 2, doppler sensor 6 and touch sensor 11 are connected, for realizing to sensor and motor Control.Touch sensor 11 is in roundlet sheet (thumbnail size), and cylindrical shape is fixed on sandwich rubber or other suitable modes In side wall, for perceiving the action of player's touch, and signal is fed back into main control singlechip 10.Power supply 12 is located at cylindric side On wall, for being powered to all parts.

In the present embodiment, main control singlechip 10 is preferably ARDUINO NANO single-chip microcomputers.Doppler sensor 6 is preferably GH719 type doppler sensors.Linear stepping motor 2 includes motor (Motor) and motor drive module, wherein motor driving mould Block is preferably L298N chips.

ARDUINO NANO single-chip microcomputers use Atmega328p master controls, main to be responsible for processing doppler sensor 6 and touch Touch the level signal that formula sensor 11 is passed back and complete logic judgment, further by I O mouths to linear stepping motor 2 L298N chips send cycle sinusoidal drive signal, by the enlarging function of drive module, realize linear stepping motor 2 rotating forward, Reversion and stopping.Its overall dimensions is very small, I O Interface enrich, can accomplish in the case of equal workload very small Size, be adapted to this programme use.

GH719 type doppler sensors incorporate HB100 microwave remote sensors, and its operating voltage is 3.7-20V, quiescent operation Electric current is smaller and has adjustable sensing threshold value, and volume is moderate.The seizure acted to musician can be realized by the sensor, sentenced The hammer action of disconnected musician, feeds back to main control singlechip 10, further delivers a signal to linear stepping motor 2, makes to ring string tensioning The tensioning of rope 3, allows The snare drum wire 4 to be in sounding position.

L298N chips can realize that the power to the control signal of linear stepping motor 2 exported to main control singlechip 10 is put Greatly, be advantageous to accurately control linear stepping motor.

Fig. 4 is provided the control circuit schematic diagram of army's drum by the utility model.As shown in figure 4, VCC and GND two in figure Circuit connects the both positive and negative polarity of power supply 12 respectively, and the voltage of power supply 12 is preferably 5V.Power supply 12 is used for main control singlechip 10, how general Sensor 6, touch sensor 11 and linear stepping motor 2 is strangled to power.

GH719 types doppler sensor includes OUT terminal, and the OUT terminal is connected with D7 ends on main control singlechip 10, for master Control single-chip microcomputer 10 and transmit signal, main control singlechip 10 passes through signal transacting, then sends to linear stepping motor 2 to make to ring string 4 and loosen Signal.

Touch sensor (TOUCH SENSOR) 11 includes SIG ends, and the SIG ends are connected with the D4 ends of main control singlechip 10, For making main control singlechip 10 obtain signal, main control singlechip 10 passes through signal transacting, then is sent to linear stepping motor 2 and make sound The signal that string 4 is tensioned.

The L298N chips being used cooperatively with linear stepping motor 2 include input A+, input A-, input B+, input Hold B-, output terminals A+, output terminals A-, output end B+ and output end B-.Wherein, four inputs connect main control singlechip 10 respectively D9~D12 ends, for receiving the control signal of main control singlechip 10；Four output ends connect the horse of linear stepping motor 2 respectively Four inputs up to (MOTOR) connect, for exporting the control to linear stepping motor 2.It is used straight in the present embodiment Line stepper motor is the line of two-phase four, therefore needs to use four inputs, four outputs, suitable by the input for changing four input signals Sequence can control its steering, rotating speed and stopping.

D9~D12 ends of ARDUINO NANO single-chip microcomputers are linear stepping motor drive output port, are respectively connecting to L298N Four inputs of chip.D7 ends are connected with the OUT terminal of GH719 type doppler sensors, are GH719 type doppler sensors Signal receiving port.D4 ends are connected with the SIG ends of touch sensor (TOUCH SENSOR), are that the signal of touch sensor receives Mouthful.

Specific work process is：Main control singlechip 10, doppler sensor 6, touch sensor 11 and power supply 12 start And await orders, musician touches the touch sensor 11 being bonded in cylindrical lateral wall with finger, after touch sensor 11 experiences touch A signal can be exported, now, main control singlechip 10 receive touch sensor 11 output signal after by processing, to straight line Stepper motor 2 sends control signal, after linear stepping motor 2 is handled the signal, carries out motion straight down.As long as Without departing from touch sensor 11, linear stepping motor 2 will move until reaching the pre- of it finger of musician straight down always If stroke, so that the sound string static line 3 being connected with linear stepping motor 2 loosens, and then make the sound being connected with ringing string static line 3 String 4 loosens, and its reduction is contacted with sympathetic response skin 5 (it is tensioning that initial state, which rings string).Musician can be according to the demand control of itself System rings the degree that string 4 loosens.Meanwhile linear stepping motor 2 can be recorded by recording step-length (that is, the angle that inner rotator turns over) The distance moved straight down.When musician has lift hand to prepare the action (by drumstick flush end), doppler sensor 6 can be by pleasure This motion capture of hand simultaneously transmits signal to main control singlechip 10, after main control singlechip 10 receives signal and handled, Xiang Zhi Line stepper motor 2 sends control signal, and linear stepping motor 2 starts to move straight up after receiving control control signal, until The move distance recorded before.The sound string static line 3 for making to be connected with linear stepping motor 2 in motion process is tensioned, so that The sound string 4 being connected with ringing string static line 3 is tensioned, and it is returned to the state being in close contact with sympathetic response skin 5.

The characteristics of technical scheme provided by the utility model, is the seizure acted using doppler sensor realization.One As for, induction type automatically-controlled door, inductive water tap would generally use infrared sensor, ultrasonic distance-measuring sensor etc., realize The change of a range of object distance is perceived.(some ultrasonic sensors can return this kind of switching regulator sensor Distance value) use condition constraint it is more, investigative range is limited.And this product is often placed in the fixation work in building Position, after debugging is good, surrounding environment hardly changes.If being used on the utility model, larger adaptability problem is had, That is, musical instrument needs often to be moved, and is used by different people, uses (studio, arenas) in different places, can all influence to pass Sensor effect, or even failure.Compared with other sensors, doppler sensor is moved using the Doppler effect of ultrasonic wave to detect Animal body, very small is required to use environment, as long as being placed to fixed position, you can start working, until there is mobile object to touch Its threshold value is sent out, is especially suitable for using under this scene.In addition, the utility model pushes away cylinder conduct using stepper motor driven worm screw Driving link, this straight line way of output has the advantages that high torque, low-loss, driving member is few, muting function is good, and this scheme needs Extra driving stepper motor module is ensureing stepper motor normal work.

The utility model cover it should be understood by those skilled in the art that all changes done to embodiment exemplified here More, replace, change, change and change.Equally, in a suitable case, appended claims cover those skilled in the art can With understanding embodiment exemplified here is made have altered, replace, change, change and change.

Claims (5)

1. a kind of army's drum, including the drum chamber surrounded jointly by upper sympathetic response skin, lower sympathetic response skin and cylindrical lateral wall, straight line stepping electricity Machine, string static line is rung, ring string, manual tension device, doppler sensor, touch sensor and main control singlechip；Wherein, it is described straight Line stepper motor is fixed in the cylindrical lateral wall and is connected with the loud string static line, in the vertical direction tense and Loosen the loud string static line；One end of the loud string static line is connected with the linear stepping motor, the loud string static line The other end is connected with one end of the loud string；The doppler sensor and the upper sympathetic response skin are in the same plane, are used for Perceive the action of player and the action of player is converted into electric signal feeds back to the main control singlechip and handled；It is described Manual tension device fixes the other end of the loud string；The main control singlechip is located in the cylindrical lateral wall, and passes through circuit It is connected with the linear stepping motor, the doppler sensor and the touch sensor, for realizing to the straight line Stepper motor, the doppler sensor and the touch sensor are controlled；The touch sensor is fixed on described In cylindrical lateral wall, for perceiving the action of player's touch and signal being fed back into the main control singlechip.

2. army as claimed in claim 1 drum, in addition to universal ball end and gooseneck, the doppler sensor with it is described universal Bulb is connected, and the universal ball end is located at the lower section of the doppler sensor and is connected with the gooseneck；The gooseneck It is connected with the cylindrical lateral wall, and between the upper sympathetic response skin and lower sympathetic response skin, the gooseneck can be any curved It is bent so as to changing doppler sensor position spatially and angle.

3. army's drum as claimed in claim 1 or 2, it is characterised in that the doppler sensor senses for GH719 types Doppler Device.

4. army's drum as claimed in claim 1 or 2, it is characterised in that the linear stepping motor includes motor drive module, institute It is L298N chips to state motor drive module.

5. army's drum as claimed in claim 1 or 2, it is characterised in that the main control singlechip is ARDUINO NANO single-chip microcomputers.