CN104019883A - Electronic drum detection device and electronic drum detection method - Google Patents
Electronic drum detection device and electronic drum detection method Download PDFInfo
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- CN104019883A CN104019883A CN201410271749.XA CN201410271749A CN104019883A CN 104019883 A CN104019883 A CN 104019883A CN 201410271749 A CN201410271749 A CN 201410271749A CN 104019883 A CN104019883 A CN 104019883A
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Abstract
Provided are an electronic drum detection device and an electronic drum detection method. The electronic drum detection device comprises a shell, a signal amplification circuit, a sampling detection circuit, a band-pass filtering amplifier, a waveshaping circuit, an MCU, a drive circuit, a power supply, a detection light emission device, a detection light receiving device and a detection signal output device, wherein the signal amplification circuit, the sampling detection circuit, the band-pass filtering amplifier, the waveshaping circuit, the MCU, the drive circuit and the power supply are arranged inside the shell; the detection light emission device and the detection light receiving device are arranged on the shell; the detection signal output device is arranged on or in the shell; the power supply is respectively connected with and provides electricity for the signal amplification circuit, the sampling detection circuit, the band-pass filtering amplifier, the waveshaping circuit, the MCU, the drive circuit, the detection light emission device, the detection light receiving device and the detection signal output device; envelope signals are taken out by the signal amplification circuit from amplitude modulation waves, and the included angle of an optical path of the detection light emission and receiving device ranges from 0 degree to 50 degrees; the detection light receiving device, the signal amplification circuit, the sampling detection circuit, the band-pass filtering amplifier, the waveshaping circuit, the MCU, the drive circuit and the detection light emission device are connected in sequence; the MCU is connected with the sampling detection circuit and the detection signal output device. The method includes the steps of receiving detection light to a vibrated drumhead, receiving detection light reflected by the drumhead, carrying out amplification, detection, filtering and shaping processing on detection light, detecting shaped signal frequency and outputting vibration information. According to the device and method, false detection can be avoided, detection is not interfered by ambient vibration, and detection operation is accurate, convenient and fast.
Description
Technical field
The present invention relates to a kind of pick-up unit for electronic drum vibration, also relate to the method for using this device to detect the vibration of electronic drum.
Background technology
Traditional electronic drum detection method is to adopt traditional electronic drum pick-up unit to carry out.Traditional electronic drum pick-up unit comprises piezoelectricity singing piece and the testing circuit that is connected this piezoelectricity singing piece, during detection, piezoelectricity singing piece is contacted to electronic drum drum head, while knocking electronic drum, piezoelectricity singing piece picks up its vibration sound signal by the drum head of vibration, by testing circuit, amplify this vibration sound signal, thereby detect the size of drum head amplitude.
There is following defect in above-mentioned traditional electronic drum pick-up unit and electronic drum detection method:
Owing to normally the drum head of a plurality of drums being arranged on same bulging frame in electronic drum structure, while adopting the vibrational state of existing electronic drum pick-up unit detected electrons drum, must be by the piezoelectricity singing piece contact electronic drum drum head of electronic drum pick-up unit, when knocking one of them drum head that detects a plurality of electronic drums, its vibration meeting is delivered to faint vibration on other drum heads by drum frame; Because piezoelectricity singing piece is passive element, its sensitivity is very high and unadjustable, and when faint vibration is delivered on the drum head not knocked by drum frame, piezoelectric buzzing sector-meeting detects the vibration of the drum head being in contact with it, thereby send the detection signal that this drum head is knocked, cause flase drop.
Summary of the invention
One of the technical problem to be solved in the present invention is, a kind of electronic drum pick-up unit is provided, and overcomes the defect that the non-weak vibration that knocks generation of existing electronic drum pick-up unit None-identified causes flase drop.
Two of the technical problem to be solved in the present invention is, a kind of electronic drum detection method is provided, and utilizes above-mentioned electronic drum pick-up unit, and the non-weak vibration that knocks generation of None-identified that overcomes existing electronic drum detection method existence causes the defect of flase drop.
The present invention solves the technical scheme that one of its technical matters adopts: construct a kind of electronic drum pick-up unit, it is characterized in that, comprise housing, be arranged on signal amplification circuit, sampling detection circuit, band-pass filter amplifier, shaping circuit, MCU, driving circuit and power supply in this housing, be arranged on the detection light emitting devices on this housing and detect optical pickup apparatus, be arranged on the detection signal output unit on this housing or in housing; This power supply is connected power supply with this signal amplification circuit, sampling detection circuit, band-pass filter amplifier, shaping circuit, MCU, driving circuit, detection light emitting devices, detection optical pickup apparatus with detection signal output unit respectively;
This sampling detection circuit for taking out the detecting circuit of envelope signal from modulated wave;
This shaping circuit output waveform is sharp wave;
The light path angle of this detection light emitting devices, detection optical pickup apparatus is more than or equal to 0 ° and is less than or equal to 50 °;
Described detection optical pickup apparatus, signal amplification circuit, sampling detection circuit, band-pass filter amplifier, shaping circuit, MCU, driving circuit, detection light emitting devices connect successively;
This MCU is connected with this sampling detection circuit, drives this sampling detection circuit to carry out detection; This MCU is connected with this detection signal output unit, the relevant information of output drum head vibration; This MCU controls this driving circuit and drives described detection light emitting devices transmitting to detect light.
In electronic drum pick-up unit of the present invention, described sampling detection circuit comprises electronic analog swtich one, electronic analog swtich two, integrating capacitor one, integrating capacitor two and operational amplifier, this electronic analog swtich one, electronic analog swtich two connect respectively the positive-negative input end of this operational amplifier, one end ground connection of this integrating capacitor one, the other end connect the link of this electronic analog swtich one and this operational amplifier, and one end ground connection of this integrating capacitor two, the other end connect the link of this electronic analog swtich two and this operational amplifier; The input end that the input end of this electronic analog swtich one, electronic analog swtich two is sampling detection circuit, the output terminal that the output terminal of this operational amplifier is sampling detection circuit.
In electronic drum pick-up unit of the present invention, described sampling detection circuit comprises detector diode, detection electric capacity and detection resistance, the positive pole of this detector diode is connected on the first input end of sampling detection circuit, this detection electric capacity and detection resistance are connected between the negative pole of this detector diode and the second input end of this sampling detection circuit, the output terminal that the two ends of this detection resistance are this sampling detection circuit.
In electronic drum pick-up unit of the present invention, described detection light emitting devices is respectively infrared light emission device and infrared light receiving trap with detecting optical pickup apparatus, or described detection light emitting devices is respectively ultraviolet light emission device and ultraviolet light receiving trap with detection optical pickup apparatus.
In electronic drum pick-up unit of the present invention, described detection signal output unit is display or audio output device.
The present invention solves the technical scheme that two of its technical matters adopts: a kind of electronic drum detection method is provided, it is characterized in that, comprise the steps:
S1, the detection position transmitting of the tested eardrum of vibration is detected to light, receive the detection light of tested membrana tympani reflex;
S2, the detection light reflected signal receiving is carried out to signal amplification, sampling detection, filter and amplification and Shape correction successively;
S3, detect the amplitude through Shape correction signal;
S4, output drum head vibration information.
In electronic drum detection method of the present invention, described detection light is infrared ray or ultraviolet ray.
Implement electronic drum pick-up unit of the present invention and electronic drum detection method, compared with the prior art, its beneficial effect is:
1. by adjusting the detection optical pickup apparatus transducer sensitivity of electronic drum pick-up unit, can avoid picking up by drum frame and be delivered to the weak vibration on other drum heads, thereby avoid on drum frame a drum head while being knocked, other drum heads cause the situation of flase drop to occur because of the weak vibration of drum frame transmission.
2. not disturbed by ambient vibration, it is accurately convenient that drum detects.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a kind of embodiment of electronic drum pick-up unit of the present invention.
Fig. 2 is the detection schematic diagram of electronic drum pick-up unit of the present invention.
Fig. 3 is the circuit diagram of a kind of embodiment of sampling detection circuit in Fig. 1.
Fig. 4 is the circuit diagram of the another kind of embodiment of sampling detection circuit in Fig. 1.
Fig. 5 is the process flow diagram of a kind of embodiment of electronic drum detection method of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figures 1 to 4, electronic drum pick-up unit of the present invention comprises housing (not shown), is arranged on signal amplification circuit 2, sampling detection circuit 3, band-pass filter amplifier 4, shaping circuit 5, MCU8, driving circuit 9 and power supply 6 in this housing, is arranged on the detection light emitting devices on this housing and detects optical pickup apparatus, is arranged on the detection signal output unit on this housing or in housing.Power supply 6 is connected power supply with signal amplification circuit 2, sampling detection circuit 3, band-pass filter amplifier 4, shaping circuit 5, MCU8, driving circuit 9, detection light emitting devices, detection optical pickup apparatus with detection signal output unit respectively.
Detection optical pickup apparatus, signal amplification circuit 2, sampling detection circuit 3, band-pass filter amplifier 4, shaping circuit 5, MCU8, driving circuit 9, detection light emitting devices connect successively.Shaping circuit output waveform is sharp wave.
MCU8 is connected with sampling detection circuit 3, drives this sampling detection circuit 3 to carry out detection.MCU8 is connected with this detection signal output unit, the relevant information of output drum head vibration.MCU8 controls this driving circuit 9 and drives the transmitting of detection light emitting devices to detect light.
In the present embodiment, detect light emitting devices and adopt infrared launcher 10, detect optical pickup apparatus and adopt infrared receiving device 1, corresponding detection light is infrared light.In other embodiments, detect light emitting devices and can adopt ultraviolet emission device, detect optical pickup apparatus and can adopt ultraviolet receiving trap, corresponding detection light is ultraviolet light.
In the present embodiment, detection signal output unit adopts display 7, and for information such as output test data, color, figures, display 7 is arranged on the housing of electronic drum pick-up unit.In other embodiments, detection signal output unit can adopt audio output device (being loudspeaker and audio output circuit thereof), be used for exporting the audio detection information of using, the drum head detected amplitude, drum head of for example reading the newspaper has or not vibration signal etc. information, loudspeaker can be arranged in the housing of electronic drum pick-up unit, also can be arranged on housing.
Above-mentioned sampling detection circuit 3 samplings can be taken out the detecting circuit of envelope signal from modulated wave, include but not limited to following sampling detection circuit:
As shown in Figure 3, sampling detection circuit 3 adopts following structure: sampling detection circuit comprises electronic analog swtich 31, electronic analog swtich 34, integrating capacitor 32, integrating capacitor 35 and operational amplifier 33, electronic analog swtich 31, electronic analog swtich 34 be the positive-negative input end of concatenation operation amplifier 33 respectively, one end ground connection of integrating capacitor 32, the other end connect the link of this electronic analog swtich 31 and operational amplifier 33, the link of one end ground connection of integrating capacitor 35, other end connecting electronic analog switch 34 and operational amplifier 33.The input end of electronic analog swtich 31, electronic analog swtich 34 is the input end of sampling detection circuit, the output terminal that the output terminal of operational amplifier 33 is sampling detection circuit.
As shown in Figure 4, sampling detection circuit 3 adopts following structure: sampling detection circuit comprises detector diode 36, detection electric capacity 37 and detection resistance 38, the positive pole of detector diode 36 is connected on the first input end of sampling detection circuit, detection electric capacity 37 and detection resistance 38 are connected between the negative pole of detector diode 36 and the second input end of this sampling detection circuit, the output terminal that the two ends of this detection resistance 38 are this sampling detection circuit.
As shown in Figure 2, this detection light emitting devices, the light path angle that detects optical pickup apparatus are less than or equal within the scope of 50 ° and choose being more than or equal to 0 °, for example, the light path angle that can select to detect light emitting devices, detects optical pickup apparatus is 5 °, 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 °, 45 ° etc.
During use, adjust the sensitivity that detects optical pickup apparatus sensor in electronic drum pick-up unit, can avoid picking up by drum frame and be delivered to the weak vibration on other drum heads, thereby avoid on drum frame a drum head while being knocked, other drum heads cause the situation of flase drop to occur because of the weak vibration of drum frame transmission.
As shown in Figure 5, electronic drum detection method of the present invention comprises the steps:
The first, the detection position transmitting of the tested eardrum (being drum surface) of vibration is detected to light, receive the detection light of tested membrana tympani reflex.Detect light and after the membrana tympani reflex of vibration, pick up the vibration signal of eardrum, detection position is generally near bulging tension points.
The second, the detection light reflected signal receiving is carried out to signal successively and amplify processing, sampling detection processing, filter amplifying processing and Shape correction, obtain the amplitude wave-shape of vibration signal, this waveform is generally sharp wave.
Three, detect the amplitude through Shape correction signal.
Four, output drum head vibration information.
The detection light of this method can adopt infrared ray, also can adopt ultraviolet ray.
The mode of the output relevant information of this method can adopt vision signal output, also can adopt sound signal output, all can realize the object of the invention.
Claims (7)
1. an electronic drum pick-up unit, it is characterized in that, comprise housing, be arranged on signal amplification circuit, sampling detection circuit, band-pass filter amplifier, shaping circuit, MCU, driving circuit and power supply in this housing, be arranged on the detection light emitting devices on this housing and detect optical pickup apparatus, be arranged on the detection signal output unit on this housing or in housing; This power supply is connected power supply with this signal amplification circuit, sampling detection circuit, band-pass filter amplifier, shaping circuit, MCU, driving circuit, detection light emitting devices, detection optical pickup apparatus with detection signal output unit respectively;
This sampling detection circuit for taking out the detecting circuit of envelope signal from modulated wave;
This shaping circuit output waveform is sharp wave;
The light path angle of this detection light emitting devices, detection optical pickup apparatus is more than or equal to 0 ° and is less than or equal to 50 °;
Described detection optical pickup apparatus, signal amplification circuit, sampling detection circuit, band-pass filter amplifier, shaping circuit, MCU, driving circuit, detection light emitting devices connect successively;
This MCU is connected with this sampling detection circuit, drives this sampling detection circuit to carry out detection; This MCU is connected with this detection signal output unit, the relevant information of output drum head vibration; This MCU controls this driving circuit and drives described detection light emitting devices transmitting to detect light.
2. electronic drum pick-up unit as claimed in claim 1, it is characterized in that, described sampling detection circuit comprises electronic analog swtich one, electronic analog swtich two, integrating capacitor one, integrating capacitor two and operational amplifier, this electronic analog swtich one, electronic analog swtich two connect respectively the positive-negative input end of this operational amplifier, one end ground connection of this integrating capacitor one, the other end connect the link of this electronic analog swtich one and this operational amplifier, and one end ground connection of this integrating capacitor two, the other end connect the link of this electronic analog swtich two and this operational amplifier; The input end that the input end of this electronic analog swtich one, electronic analog swtich two is sampling detection circuit, the output terminal that the output terminal of this operational amplifier is sampling detection circuit.
3. electronic drum pick-up unit as claimed in claim 1, it is characterized in that, described sampling detection circuit comprises detector diode, detection electric capacity and detection resistance, the positive pole of this detector diode is connected on the first input end of sampling detection circuit, this detection electric capacity and detection resistance are connected between the negative pole of this detector diode and the second input end of this sampling detection circuit, the output terminal that the two ends of this detection resistance are this sampling detection circuit.
4. electronic drum pick-up unit as claimed in claim 1, it is characterized in that, described detection light emitting devices is respectively infrared light emission device and infrared light receiving trap with detecting optical pickup apparatus, or described detection light emitting devices is respectively ultraviolet light emission device and ultraviolet light receiving trap with detection optical pickup apparatus.
5. the electronic drum pick-up unit as described in one of claim 1 to 4, is characterized in that, described detection signal output unit is display or audio output device.
6. an electronic drum detection method, is characterized in that, comprises the steps:
S1, the detection position transmitting of the tested eardrum of vibration is detected to light, receive the detection light of tested membrana tympani reflex;
S2, the detection light reflected signal receiving is carried out to signal amplification, sampling detection, filter and amplification and Shape correction successively;
S3, detect the amplitude through Shape correction signal;
S4, output drum head vibration information.
7. electronic drum detection method as claimed in claim 6, is characterized in that, described detection light is infrared ray or ultraviolet ray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410271749.XA CN104019883A (en) | 2014-06-18 | 2014-06-18 | Electronic drum detection device and electronic drum detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410271749.XA CN104019883A (en) | 2014-06-18 | 2014-06-18 | Electronic drum detection device and electronic drum detection method |
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| CN104019883A true CN104019883A (en) | 2014-09-03 |
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| CN201410271749.XA Pending CN104019883A (en) | 2014-06-18 | 2014-06-18 | Electronic drum detection device and electronic drum detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108665882A (en) * | 2018-08-14 | 2018-10-16 | 音王电声股份有限公司 | Small cymbals is stepped in a kind of emulation of novel electron |
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| US4028977A (en) * | 1975-11-17 | 1977-06-14 | John Joseph Ryeczek | Optoelectronic sound amplifier system for musical instruments |
| US20080229907A1 (en) * | 2007-03-23 | 2008-09-25 | James Hastings Clark | Musical instrument tuner |
| CN101996623A (en) * | 2009-08-20 | 2011-03-30 | 曹少堃 | Capacitive-type sensor for striking electronic musical instrument |
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| CN103824554A (en) * | 2014-03-05 | 2014-05-28 | 深圳市海星王科技有限公司 | Electronic percussion instrument as well as non-contact-type sensor and signal detection method of electronic percussion instrument |
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2014
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| US4028977A (en) * | 1975-11-17 | 1977-06-14 | John Joseph Ryeczek | Optoelectronic sound amplifier system for musical instruments |
| US20080229907A1 (en) * | 2007-03-23 | 2008-09-25 | James Hastings Clark | Musical instrument tuner |
| CN101996623A (en) * | 2009-08-20 | 2011-03-30 | 曹少堃 | Capacitive-type sensor for striking electronic musical instrument |
| CN102788638A (en) * | 2011-05-16 | 2012-11-21 | 深圳市海星王科技有限公司 | Optical sensor for electro-acoustic percussion instrument |
| CN103824554A (en) * | 2014-03-05 | 2014-05-28 | 深圳市海星王科技有限公司 | Electronic percussion instrument as well as non-contact-type sensor and signal detection method of electronic percussion instrument |
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| CN108665882A (en) * | 2018-08-14 | 2018-10-16 | 音王电声股份有限公司 | Small cymbals is stepped in a kind of emulation of novel electron |
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Application publication date: 20140903 |