CN207663781U - It is a kind of based on active infra-red obstacle detection without string electronic organ - Google Patents
It is a kind of based on active infra-red obstacle detection without string electronic organ Download PDFInfo
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- CN207663781U CN207663781U CN201820026902.6U CN201820026902U CN207663781U CN 207663781 U CN207663781 U CN 207663781U CN 201820026902 U CN201820026902 U CN 201820026902U CN 207663781 U CN207663781 U CN 207663781U
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- string
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- infrared
- obstacle detection
- electronic organ
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Abstract
The utility model discloses a kind of based on active infra-red obstacle detection without string electronic organ, including qin body and the electronic control unit that is arranged in the qin body；The electronic control unit includes microprocessor, power module for power supply, memory module for stored audio file, D/A converter module for carrying out digital and analogue signals conversion and loud speaker, the power module, memory module and D/A converter module are electrically connected to the microprocessor, and the loud speaker is electrically connected to the output end of the D/A converter module；Further include it is multiple for trigger electronic organ key sound without string key module, the no string key module includes the infrared transmitter and infrared remote receiver of a pair of spaced and face setting, and the infrared transmitter and infrared remote receiver are electrically connected to the microprocessor.The advantages that the utility model has smart structural design, operates with simply, and introduction is easy, and is easy to excitation and plays interest, safe to use, and power consumption is smaller at low cost.
Description
Technical field
The utility model is related to electronic organ technical fields, in particular to a kind of nothing based on active infra-red obstacle detection
String electronic organ.
Background technology
Electronic organ is the developing product of electronic science and technology.With the rapid development of electronic technology, electronic organ is not yet
It updates disconnectedly.The high development of especially digital technology, large scale integrated circuit and computer technology makes electronic organ not only
Beyond traditional musical sound such as piano, organ, violin on range, and the tone color of various traditional instruments can also be simulated, moreover it is possible to produce
The unique even nature of non-hibernating eggs kind no sound equipment at all.In addition, electronic organ type is various, and it is small, play carrying side
Just, price is comparatively cheaper.So deep liked by the music public.However, existing electronic organ is adopted mostly
It with the structure of similar piano, is triggered using mechanical key, for infant, the children either handicapped people of hand comes
It says, since hand strength is weaker or hand impediments, can not undergo musical performance.
Utility model content
In view of the above shortcomings of the prior art, technical problem to be solved in the utility model is：How a kind of knot is provided
Structure is ingenious in design, operates with simply, and introduction is easy, and is easy to excitation and plays interest, safe to use, the smaller base at low cost of power consumption
In active infra-red obstacle detection without string electronic organ.
In order to solve the above-mentioned technical problem, the utility model uses the following technical solution：
It is a kind of based on active infra-red obstacle detection without string electronic organ, including qin body and be arranged in the qin body
Electronic control unit；The electronic control unit includes microprocessor, for the power module of power supply, is used for stored audio file
Memory module, the D/A converter module for carrying out digital and analogue signals conversion and loud speaker, the power module, memory module
And D/A converter module is electrically connected to the microprocessor, the loud speaker is electrically connected to the defeated of the D/A converter module
Outlet；It is characterized in that, further include it is multiple for trigger electronic organ key sound without string key module, the no string key module packet
The infrared transmitter and infrared remote receiver of a pair of spaced and face setting are included, the infrared transmitter and infrared remote receiver are equal
It is electrically connected to the microprocessor.
Using above-mentioned apparatus, so that it may in advance by the monophonic audio file storage of each key sound on electronic organ to memory module
In, infrared transmitter each without string key module is then controlled by microprocessor and sends out infrared signal, it is corresponding infrared to connect
Infrared signal can be received and feed back to microprocessor by receiving device, once some infrared transmitter without string key module and red
Exist between outer receiver and block, the infrared signal which receives will change, micro-
Processor can determine whether that this is currently to play without string key module, and transfer from memory module corresponding without string key module
Audio file carries out sounding after the digital-to-analogue conversion of D/A converter module by loud speaker.Player need to only use hand or other objects
Product are blocked in desired performance without between the infrared transmitter and infrared remote receiver in string key module, so that it may to trigger this without string
The sound of key module, operation is very easy, is not limited by finger strength.For infant or children, because being without button
It can pronounce, it can be excited to play interest significantly.In addition, infrared transmitter and infrared remote receiver cost are relatively low, power consumption is smaller, to regarding
Nethike embrane fanout free region, is suitable for infant or children use.
Further, the infrared transmitter and infrared remote receiver are impulse type.
Traditional infrared obstacle detection determines whether that barrier blocks according to light intensity variation, needs to continuously send out infrared light,
The infrared light light intensity sent out is bigger, and the distance that can be detected is longer, but with the increase of luminous power, it will increase system work(
Consumption.The infrared obstacle of impulse type monitors, and only can send out extremely short infrared light of a branch of time in the moment of monitoring, since the time is short,
System average power consumption is low.It is blocked when existing between infrared transmitter and infrared remote receiver, the infrared pulse signal received will be sent out
Changing, microprocessor monitor infrared pulse signal in real time, when signal variation be more than threshold value, then be determined as there is barrier screening
Gear.
Further, the sample frequency of the infrared remote receiver is at least 2 times of the tranmitting frequency of the infrared transmitter.
According to Nyquist's theorem, in the transfer process for carrying out analog/digital signal, when sample frequency is more than in signal
At 2 times of highest frequency, the digital signal after sampling completely remains the information in original signal.
Further, further include the indicator light being correspondingly arranged with the no string key module, the indicator light is electrically connected to
The microprocessor.
Using the above structure, corresponding instruction can be controlled without string key module according to currently triggering by microprocessor
Lamp is lighted, and visual feedback is provided for player；Microprocessor can also be utilized to control indicator light point according to built-in teaching program
Bright, guiding beginner triggers corresponding no string key module according to the indicator light currently lighted, and completes the performance of song.
Further, the indicator light is color LED indicator light.
In this way, microprocessor can be utilized to adjust the corresponding LED indication of different no string key modules according to built-in program
The color of lamp, ornamental value when enhancing is played.
Further, rising tune key module for adjusting qin sound rising tune is also associated on the microprocessor and for adjusting
The falling tone key module of qin sound falling tone；Each no string key module is correspondingly arranged that there are three be respectively used to instruction rising tune, flat
The indicator light of tune and falling tone state.
Further, the rising tune key module and falling tone key module include the infrared of a pair of spaced and face setting
Transmitter and infrared remote receiver.
Further, the display screen for being provided with and can be used in showing song information is also connected on the microprocessor.
Further, multiple no string key modules are arc-shaped arrangement, and each no string key module is red
Radially face is arranged for external transmitter and infrared remote receiver.
Further, the infrared transmitter of each no string key module is located in corresponding infrared remote receiver.
In conclusion the utility model has smart structural design, operate with simply, introduction is easy, and is easy to excitation and is drilled
Interest is played, safe to use, the advantages that power consumption is smaller at low cost.
Description of the drawings
Fig. 1 is the circuit principle structure schematic diagram of the utility model.
Fig. 2 is the outline structural diagram of the utility model qin body.
Fig. 3 is the emitter circuit diagram of the utility model embodiment.
Fig. 4 is the receiving terminal circuit figure of the utility model embodiment.
Fig. 5 is the LED indicating circuit figure of the utility model embodiment.
Fig. 6 is the audio output circuit figure of the utility model embodiment.
Fig. 7 is the control flow chart of indicator light under free schema.
Fig. 8 is the control flow chart of electronic organ under free schema.
Fig. 9 is the control flow chart of indicator light under exercise mode.
Figure 10 is the control flow chart of electronic organ under exercise mode.
Specific implementation mode
With reference to embodiment, the utility model is described in further detail.
When specific implementation：As depicted in figs. 1 and 2, it is a kind of based on active infra-red obstacle detection without string electronic organ, be used for
The power module 3 of power supply is used for the memory module 4 of stored audio file, the digital-to-analogue conversion mould for carrying out digital and analogue signals conversion
Block 5 and loud speaker 6, the power module 3, memory module 4 and D/A converter module 5 are electrically connected to the microprocessor
2, the loud speaker 6 is electrically connected to the output end of the D/A converter module 5；It is characterized in that, further including multiple for triggering
The infrared hair of electronic organ key sound being arranged including a pair of spaced and face without string key module 7, the no string key module 7
Emitter and infrared remote receiver, the infrared transmitter and infrared remote receiver are electrically connected to the microprocessor 2, the infrared hair
Emitter and infrared remote receiver are impulse type.It is also connected with to be provided on the microprocessor 2 and can be used in showing song information
Display screen 11.Multiple no string key modules 7 are arc-shaped arrangement, and the infrared emission of each no string key module 7
Radially face is arranged for device and infrared remote receiver.
Using above-mentioned apparatus, so that it may in advance by the monophonic audio file storage of each key sound on electronic organ to memory module
In, infrared transmitter each without string key module is then controlled by microprocessor and sends out infrared signal, it is corresponding infrared to connect
Infrared signal can be received and feed back to microprocessor by receiving device, once some infrared transmitter without string key module and red
Exist between outer receiver and block, the infrared signal which receives will change, micro-
Processor can determine whether that this is currently to play without string key module, and transfer from memory module corresponding without string key module
Audio file carries out sounding after the digital-to-analogue conversion of D/A converter module by loud speaker.Player need to only use hand or other objects
Product are blocked in desired performance without between the infrared transmitter and infrared remote receiver in string key module, so that it may to trigger this without string
The sound of key module, operation is very easy, is not limited by finger strength.For infant or children, because being without button
It can pronounce, it can be excited to play interest significantly.In addition, infrared transmitter and infrared remote receiver cost are relatively low, power consumption is smaller, to regarding
Nethike embrane fanout free region, is suitable for infant or children use.
Traditional infrared obstacle detection determines whether that barrier blocks according to light intensity variation, needs to continuously send out infrared light,
The infrared light light intensity sent out is bigger, and the distance that can be detected is longer, but with the increase of luminous power, it will increase system work(
Consumption.The infrared obstacle of impulse type monitors, and only can send out extremely short infrared light of a branch of time in the moment of monitoring, since the time is short,
System average power consumption is low.It is blocked when existing between infrared transmitter and infrared remote receiver, the infrared pulse signal received will be sent out
Changing, microprocessor monitor infrared pulse signal in real time, when signal variation be more than threshold value, then be determined as there is barrier screening
Gear.
Further include the indicator light 8 being correspondingly arranged with the no string key module 7, the indicator light 8 is electrically connected to described micro-
Processor 2.
Using the above structure, corresponding instruction can be controlled without string key module according to currently triggering by microprocessor
Lamp is lighted, and visual feedback is provided for player；Microprocessor can also be utilized to control indicator light point according to built-in teaching program
Bright, guiding beginner triggers corresponding no string key module according to the indicator light currently lighted, and completes the performance of song.
The rising tune key module 9 for adjusting qin sound rising tune is also associated on the microprocessor 2 and for adjusting qin sound drop
The falling tone key module 10 of tune；Each no string key module 7 be correspondingly arranged there are three be respectively used to instruction rising tune, Heibei provincial opera with
And the indicator light 8 of falling tone state.The rising tune key module 9 and falling tone key module 10 include a pair of spaced and face
The infrared transmitter and infrared remote receiver of setting.
Embodiment
The present embodiment is using STM32F407 as main control chip, and STM32F407 series is towards needs in as low as 10x 10mm
Encapsulation in realize high integration, high-performance, the medical treatment of in-line memory and peripheral hardware, industry and consumer application.
STM32F407 provides the Cortex that working frequency is 168MHzTMThe performance of-M4 kernels (with floating point unit).In 168MHz
Under frequency, when being executed from flash storage, STM32F407/417 is capable of providing 210DMIPS/566CoreMark performances, and
FLASH zero wait states are realized using the ART accelerators of STMicw Electronics.DSP is instructed and floating point unit expands product
Application range.
The emitter circuit diagram of the present embodiment is as shown in figure 3, the Digital Signals high frequency power pipe driving modulated
Infrared light pipe shines, and resistance is smaller after is connected due to infrared tube, increases the mesh that current-limiting resistance reaches current limliting in circuit
High frequency power pipes switch time determine device can by maximum frequency, the communication bandwidth of direct determination device compares
Integrated amplifier, circuit is simpler, and driveability is more preferable, drive efficiency higher, cost are lower.
The receiving terminal circuit of the present embodiment is as shown in figure 4, receiving circuit is had quite using cascode grade amplifying circuit, circuit
High β value, driving tube use HF switch pipe, the precision higher of device, and power consumption is lower.It is red by taking first group of reception device as an example
The signal that outer light pipe receives is capacitively coupled to the base stage of Q5, while capacitance also makes circuit have better anti-interference ability
D.C. regulated power supply provides forward bias by resistance R34 to Q5 emitter junctions, and generates base stage DC current while being collector junction
Reverse biased is provided, triode operation is made to pass through regulation resistance R35 in magnifying state, changes Q5 collector output voltages.
The LED indicating circuit of the present embodiment as shown in figure 5, audio output circuit as shown in fig. 6, for so that microcontroller output
Audio can be identified that exports audio signal is carried out blocking by the design by c15, c17 by sound equipment.
When it is implemented, generating the pulse signal of 5kHz using microcontroller, infrared diode is driven, pulsed infrared is sent out
Light.
After receiving terminal receives infrared signal, restored by signal processing circuit and amplifying circuit.
It obtains that one identical as original signal frequency but the pulse signal of Duty Cycle Distortion after processing, receives infrared light
When, it is high level.It is low level when can not receive infrared light.
It will be signally attached to single-chip I/O mouth, signal will be sampled using microcontroller.Microcontroller uses the speed of 25kHz
Directly I/O port level state is sampled.According to Nyquist's theorem, in the transfer process for carrying out analog/digital signal,
(the fs.max when sample frequency is more than 2 times of highest frequency in signal>2fmax), the digital signal after sampling completely is protected
It has stayed the information in original signal, this system to be sampled using 5 times of rates of original signal, has retained the letter in original signal enough
Breath.
Comparator built in single-chip I/O mouth, for the signal sampled with high level for 1, the form that low level is 0 is stored in list
In piece machine
Sampling the data obtained is counted at regular intervals, accounting for for signal is calculated according to high level quantity in signal
Empty ratio.
If storage assembly initial data quantity is n
When duty ratio is less than given threshold value, judgement signal is blocked.
The state of one group of I/O port, 16 pins in microcontroller is previously stored in 16 bit registers, 16 roads Ke Dui letter
Number sample simultaneously, sample only needs the data of two bytes every time, and data utilization ratio is high.Using DMA, (memory is direct
Access) technology, intervene without CPU, memory directly is written into register data, greatlys improve data transmission bauds so that is more
The high-speed sampling of road signal is achieved.Which consumption resource is few, and expansion is at low cost, and slightly change can realize 32 tunnels,
64 the tunnels even acquisition of 128 tunnel infrared signals.
Have benefited from high sampling rate, in 5kHz pulse signals, 25kHz sampling rates, the application that 16 road signals acquire simultaneously
In, the obstacle detection time is less than 0.1ms.
As shown in Figure 7, Figure 8, under free schema indicator light and electronic organ control flow chart.As shown in Figure 9 and Figure 10, practice
The control flow chart of indicator light and electronic organ under habit pattern.
The above is only the preferred embodiment of the utility model only, is not limitation with the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. it is a kind of based on active infra-red obstacle detection without string electronic organ, including qin body (1) and be arranged in the qin body (1)
Interior electronic control unit；The electronic control unit includes microprocessor (2), for the power module (3) of power supply, for storing up
The memory module (4) for depositing audio file, the D/A converter module (5) for carrying out digital and analogue signals conversion and loud speaker (6), institute
It states power module (3), memory module (4) and D/A converter module (5) and is electrically connected to the microprocessor (2), it is described to raise
Sound device (6) is electrically connected to the output end of the D/A converter module (5)；It is characterized in that, further including multiple for triggering electronics
Key sound without string key module (7), the no string key module (7) includes the infrared hair of a pair of spaced and face setting
Emitter and infrared remote receiver, the infrared transmitter and infrared remote receiver are electrically connected to the microprocessor (2).
2. as described in claim 1 based on active infra-red obstacle detection without string electronic organ, which is characterized in that described infrared
Transmitter and infrared remote receiver are impulse type.
3. as claimed in claim 2 based on active infra-red obstacle detection without string electronic organ, which is characterized in that described infrared
The sample frequency of receiver is at least 2 times of the tranmitting frequency of the infrared transmitter.
4. as described in claim 1 based on active infra-red obstacle detection without string electronic organ, which is characterized in that further include with
The indicator light (8) that the no string key module (7) is correspondingly arranged, the indicator light (8) are electrically connected to the microprocessor (2).
5. as claimed in claim 4 based on active infra-red obstacle detection without string electronic organ, which is characterized in that the instruction
Lamp (8) is color LED indicator light.
6. as claimed in claim 4 based on active infra-red obstacle detection without string electronic organ, which is characterized in that micro- place
It is also associated with the rising tune key module (9) for adjusting qin sound rising tune and the falling tone key mould for adjusting qin sound falling tone on reason device (2)
Block (10)；Each no string key module (7) is respectively used to instruction rising tune, Heibei provincial opera and falling tone shape there are three being correspondingly arranged
The indicator light (8) of state.
7. as claimed in claim 6 based on active infra-red obstacle detection without string electronic organ, which is characterized in that the rising tune
Key module (9) and falling tone key module (10) include the infrared transmitter and infrared receiver of a pair of spaced and face setting
Device.
8. as described in claim 1 based on active infra-red obstacle detection without string electronic organ, which is characterized in that micro- place
The display screen (11) for being provided with and can be used in showing song information is also connected on reason device (2).
9. as described in claim 1 based on active infra-red obstacle detection without string electronic organ, which is characterized in that multiple described
No string key module (7) is arc-shaped arrangement, and the infrared transmitter and infrared remote receiver of each no string key module (7)
Radially face is arranged.
10. as claimed in claim 9 based on active infra-red obstacle detection without string electronic organ, which is characterized in that Mei Gesuo
The infrared transmitter for stating no string key module (7) is located in corresponding infrared remote receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820026902.6U CN207663781U (en) | 2018-01-08 | 2018-01-08 | It is a kind of based on active infra-red obstacle detection without string electronic organ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820026902.6U CN207663781U (en) | 2018-01-08 | 2018-01-08 | It is a kind of based on active infra-red obstacle detection without string electronic organ |
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|---|---|
| CN207663781U true CN207663781U (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820026902.6U Expired - Fee Related CN207663781U (en) | 2018-01-08 | 2018-01-08 | It is a kind of based on active infra-red obstacle detection without string electronic organ |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087621A (en) * | 2018-08-24 | 2018-12-25 | 北京晨语筝业教育科技有限公司 | The signal detecting method and device of intelligent Chinese zither |
| CN109584847A (en) * | 2019-01-25 | 2019-04-05 | 张洋 | Building blocks electronic organ |
| CN115359770A (en) * | 2022-08-23 | 2022-11-18 | 深圳市戴乐体感科技有限公司 | Intelligent guitar and tone-changing control method thereof |
-
2018
- 2018-01-08 CN CN201820026902.6U patent/CN207663781U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087621A (en) * | 2018-08-24 | 2018-12-25 | 北京晨语筝业教育科技有限公司 | The signal detecting method and device of intelligent Chinese zither |
| CN109584847A (en) * | 2019-01-25 | 2019-04-05 | 张洋 | Building blocks electronic organ |
| CN109584847B (en) * | 2019-01-25 | 2024-05-31 | 张洋 | Building block electronic organ |
| CN115359770A (en) * | 2022-08-23 | 2022-11-18 | 深圳市戴乐体感科技有限公司 | Intelligent guitar and tone-changing control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180727 Termination date: 20190108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |