CN207692038U

CN207692038U - A kind of acoustic toy

Info

Publication number: CN207692038U
Application number: CN201721923085.6U
Authority: CN
Inventors: 朱志锋
Original assignee: Shenzhen H&T Intelligent Control Co Ltd
Current assignee: Shenzhen H&T Intelligent Control Co Ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2018-08-03
Anticipated expiration: 2027-12-29

Abstract

The utility model embodiment is related to speaker technology field, more particularly to a kind of acoustic toy.The acoustic toy includes：Reference voltage generating circuit, for generating reference voltage；Voltage comparator circuit, including first voltage input terminal, second voltage input terminal and output end, first voltage input terminal receive reference voltage, and second voltage input terminal connects sound module, for receiving the collision voltage exported from sound module；Output end is used for the comparison result outputs level signals according to reference voltage and collision voltage；The output end and sound module of control circuit, control circuit and voltage comparator circuit connect, and control circuit controls sound module according to level signal and sends out voice prompt.The acoustic toy that the utility model embodiment provides can be fallen according to child to be pounded the action of toy and is adaptively adjusted, and falls the different dynamics of action of pounding to embody child, the flexibility of application is good.

Description

A kind of acoustic toy

Technical field

The utility model embodiment is related to speaker technology field, more particularly to a kind of acoustic toy.

Background technology

Acoustic toy with loudspeaker is widely used general in consumer electronics product, and major function is to send out sound Sound.

The nature of child are that love pounds thing, and therefore, what child can be regular falls toy, this results in the service life of toy It greatly shortens.In the Toy Design for Children with loudspeaker, the process of toy can be fallen in children using loudspeaker as a signal source In, loudspeaker can vibrate and generate voltage, which can be used as a trigger signal, triggering loudspeaker to play education child and do not pound thing Prompt tone so that the service life is longer for the toy.It is existing to fall trigger signal caused by toy using child, it is usually logical Cross that dumping switch is detected or acceleration transducer is detected to obtain.

Applicant in the implementation of the present invention, it is found that the relevant technologies have the following problems：Above two falls child In the motion detection method for pounding toy, the sensitivity of motion detection can not be adjusted, cannot be fallen according to child pound the action of toy into Row is adaptively adjusted, and falls the different dynamics of action of pounding to embody child, the flexibility of application is poor.

Utility model content

The utility model embodiment provides a kind of acoustic toy, it is intended to solve existing acoustic toy and can not fall child to pound The action of toy carries out the technical issues of flexibility detection.

In order to solve the above technical problems, the technical solution that the utility model uses is：A kind of acoustic toy is provided, is wrapped Sound module is included, the acoustic toy includes：Reference voltage generating circuit, for generating reference voltage；Voltage comparator circuit, packet First voltage input terminal, second voltage input terminal and output end are included, the first voltage input terminal receives the reference voltage, institute It states second voltage input terminal and connects the sound module, for receiving the collision voltage exported from the sound module；It is described defeated Outlet is used for the comparison result outputs level signals according to the reference voltage and the collision voltage；Control circuit, the control Circuit processed is connect with the output end of the voltage comparator circuit and the sound module, and the control circuit is believed according to the level Number control sound module sends out voice prompt.

Wherein, the sound module includes loudspeaker.

Wherein, the reference voltage generating circuit includes first resistor and second resistance；One end of the first resistor connects Power supply is connect, the other end of the first resistor is all connect with the first voltage input terminal with one end of the second resistance, institute State the other end ground connection of second resistance.

Wherein, the reference voltage generating circuit further includes the first filter circuit, and one end of first filter circuit connects Connect the first voltage input terminal, the other end ground connection of first filter circuit.

Wherein, the reference voltage generating circuit further includes the second filter circuit, and one end of second filter circuit connects It is connected to one end that the first resistor is connected with the power supply, the other end ground connection of second filter circuit.

Wherein, the voltage comparator circuit includes voltage comparator, third filter circuit, and the voltage comparator includes same Phase input terminal, inverting input compare output end, voltage input end and voltage output end, one end of the third filter circuit The voltage input end is connected, the other end connects the voltage output end, and the voltage input end connects power supply, and the voltage is defeated Outlet is grounded, and the inverting input of the voltage comparator is the first voltage input terminal, and in-phase input end is described second Voltage input end, the relatively output end are the output end of the voltage comparator circuit.

Wherein, the acoustic toy further includes：One end of current-limiting circuit, the current-limiting circuit connects the sound module The other end of output end, the current-limiting circuit connects the second voltage input terminal.

Wherein, the acoustic toy further includes：One end of 4th filter circuit, the 4th filter circuit connects the hair The other end of the output end of sound module, the 4th filter circuit and the sound module is grounded.

Wherein, the acoustic toy further includes：Pull-up resistor, one end of the pull-up circuit and the voltage comparator circuit Output end connection, the other end of the pull-up circuit connects power supply.

Wherein, the control circuit includes：Power amplification circuit and controller, the controller and power amplification electricity The input terminal on road connects, and the output end of the power amplification circuit is connect with the sound module.

The acoustic toy that the utility model embodiment provides, on the one hand makes full use of the phonation characteristics of acoustic toy, develops Its specific function, i.e.,：It is made a sound when by outer force effect, it is ingenious in design；On the other hand, which can basis Child, which falls, pounds the action of toy and is adaptively adjusted, and falls the different dynamics of action of pounding to embody child, the flexibility of application is good.

Description of the drawings

Fig. 1 is a kind of circuit block diagram for acoustic toy that the utility model embodiment provides；

Fig. 2 is a kind of circuit block diagram for acoustic toy that another embodiment of the utility model provides；

Fig. 3 is a kind of circuit structure diagram for acoustic toy that the utility model embodiment provides.

Specific implementation mode

For the ease of understanding the utility model, with reference to the accompanying drawings and detailed description, the utility model is carried out more Detailed description.It should be noted that when element is expressed " being fixed on " another element, it can be directly in another element Upper or placed in the middle there may be one or more therebetween elements.When an element is expressed " connection " another element, it can To be directly to another element or may exist one or more elements placed in the middle therebetween.This specification is used Term " vertical ", " horizontal ", "left", "right" and similar statement for illustrative purposes only.

Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model The normally understood meaning of technical staff in art field is identical.Art used in the description of the utility model in this specification Language is intended merely to the purpose of description specific embodiment, is not intended to limitation the utility model.Art used in this specification Language "and/or" includes any and all combinations of one or more relevant Listed Items.

Referring to Fig. 1, Fig. 1 is a kind of circuit block diagram for acoustic toy 100 that the utility model embodiment provides, such as Fig. 1 Shown, above-mentioned acoustic toy 100 includes：Reference voltage generating circuit 10, voltage comparator circuit 20, control circuit 30 and sounding mould Block 40.

For reference voltage generating circuit 10 for generating reference voltage, the voltage value of the reference voltage is adjustable, new in this practicality In type embodiment, reference voltage generating circuit 10 includes：First output end 101.First output end, 101 output reference voltage, should Reference voltage accesses the first voltage input terminal 201 of voltage comparator circuit.

Sound module 40 is to convert electrical signals to vibrate, and sends out the electro-acoustic transducer device of corresponding sound, such as based on electricity The coil-moving speaker that magnetic induction principle is realized.The sound module 40 has (vibrates) mutually conversion by electric signal and acoustical signal Function.

When needing to realize vocal function, specific electric signal can be inputted to sound module 40, pass through sound module 40 After being converted to corresponding vibration, voice signal is exported.And when no electric signal inputs, sound module 40 can then perceive itself Vibration (such as the vibration generated under outer force effect such as hitting), and these vibrations are converted into corresponding voltage signal, from hair Sound module 40 exports.In the present embodiment, voltage signal sound module 40 exported is known as " collision voltage ".The collision voltage It can be input in the second voltage input terminal 202 of voltage comparator circuit.

Voltage comparator circuit 20, for the voltage of input to be compared, in the utility model embodiment, voltage compares Circuit 20 includes：First voltage input terminal 201, second voltage input terminal 202 and output end 203.201 He of first voltage input terminal Second voltage input terminal 202 is respectively used to receive above-mentioned reference voltage and above-mentioned collision voltage, and by above-mentioned reference voltage and Above-mentioned collision voltage is compared, and obtains comparison result, the comparison result in the form of level signal from output end 203 export to Next element.

Control circuit 30 is electrically connected with the output end of voltage comparator circuit 20 203 and sound module 40 respectively, control electricity The level signal control sound module 40 that road 30 is exported according to output end 203 sends out voice prompt.For example, when the electricity of reference voltage When pressure value is less than the voltage value of collision voltage, which is high level, that is, controls sound module 40 and send out voice prompt, should Prompt tone not fall toy for educating children.

It should be noted that the size of reference voltage can be by reference to voltage generation circuit in the utility model embodiment 10 are adjusted, and collision voltage is then determined by the stressing conditions of acoustic toy, when children are firmly larger during falling toy, Then the collision voltage of the output also accordingly increases, when children firmly reducing during falling toy, then the collision electricity of the output Pressure is also corresponding to be reduced.Therefore the acoustic toy that the utility model embodiment provides, can be by adjusting reference voltage generating circuit The reference voltages of 10 outputs fall the action dynamics of toy of pounding to embody child.

In some embodiments, as shown in Fig. 2, sound module 40 includes loudspeaker 401, control circuit 30 includes：Power is put Big circuit 301 and controller 302.

The input terminal of power amplification circuit 301 is connect with controller 302, the electric current (electricity for receiving the output of controller 302 Pressure) signal, the output end of power amplification circuit connect with sound module 40, and electric current (voltage) signal is by power amplification circuit After 301 are amplified, in output to loudspeaker 401, using amplified electric current (voltage) signal, it can make in loudspeaker 401 Coil generates vibration, and sending out education children not fall the prompt tone of toy, and the wherein prompt tone is stored in as in SD card 303, is controlled Device 302 processed can read the audio file in the SD card 303 and be reported by loudspeaker 401.

The acoustic toy that the utility model embodiment provides can utilize movement of the coil in magnetic field in loudspeaker to generate Level signal, the level signal can control loudspeaker with trigger controller 302 and make a sound, in some embodiments, level letter Number it is also used as interrupt signal, so that controller 302 is after receiving the level signal, it can be to the member in other work Device carries out interrupt processing.

Circuit structure of the utility model embodiment mainly for reference voltage generating circuit 10 and voltage comparator circuit 20 Figure describes in detail.

As shown in figure 3, reference voltage generating circuit 10 includes first resistor R1, second resistance R2 and the first power supply U1.

One end of first resistor R1 connects the first power supply U1, and the other end of first resistor R1 and one end of second resistance R2 are all It is connected to first node 301 (first node 301 is the first output end of above-mentioned reference voltage generating circuit), first node 301 It is connect with the first voltage input terminal of voltage comparator circuit, the other end ground connection of second resistance R2.

Wherein, first resistor R1 and second resistance R2 can by adjusting the resistance value of R1 and/or R2 as a bleeder circuit To export different size of reference voltage at first node 301.In the utility model embodiment, the resistance value of R1 is 75K Ω And adjustable, it is 18K Ω and adjustable that R2, which is resistance value, and U1 values are 5V.

In some embodiments, bleeder circuit can also be that other forms have voltage divide function so that at first node 301 Export different size reference voltage circuit, and in being not limited to the above embodiments by first resistor R1 and second resistance R2 institutes group At bleeder circuit.

In some embodiments, as shown in figure 3, reference voltage generating circuit 10 further includes：The electricity of first capacitance C1 and second Hold C2.

One end of first capacitance C1 is connected to first node 301, the other end ground connection of the first capacitance C1, and the first capacitance C1 makees The reference voltage exported from first node 301 can be made more to stablize for the first filter circuit, C1 values 10nF in the present embodiment. In other embodiments, the first filter circuit can also be that other forms have the circuit of filter function, and be not limited to above-mentioned reality Apply the first capacitance C1 in example.

One end of second capacitance C2 is connected to one end of first resistor R1, the other end ground connection of the second capacitance C2, the second electricity Holding C2 can be such that the voltage exported from the first power supply U1 more stablizes as the second filter circuit, as first resistor R1 and second The bleeder circuit of resistance R2 composition, provides stable voltage, C2 values 100nF in the present embodiment.In other embodiments, second Filter circuit can also be that other forms have the circuit of filter function, and the second capacitance C2 in being not limited to the above embodiments.

With continued reference to FIG. 3, as shown in figure 3, voltage comparator circuit 20 includes：Voltage comparator U2A and third capacitance C3. Wherein, voltage comparator U2A includes in-phase input end I1, inverting input I2, compares output end O1, voltage input end, voltage Output end.

Second source U2 is used to provide voltage to voltage comparator U2A, specifically, the control source of voltage comparator U2A The voltage output end ground connection of end connection second source U2, voltage comparator U2A, the second source U2 in the utility model embodiment Value is 5V.

The voltage input end of one end connection voltage comparator U2A of third capacitance C3, other end ground connection.In the utility model In embodiment, third capacitance C3 can make to load on the second source U2 of voltage comparator U2A more as third filter circuit Stablize, C3 value 100nF in the present embodiment, in other embodiments, third filter circuit can also be that other forms have filter The circuit of wave energy, and the third capacitance C3 in being not limited to the above embodiments.

In some embodiments, as shown in figure 3, acoustic toy 100 further includes：3rd resistor R3.One end of resistance R3 connects Meet loudspeaker, the in-phase input end I1 of the other end connection voltage comparator U2A of resistance R3.Resistance R3 can be with as a current-limiting circuit Prevent acoustic toy 100 from being burnt out because electric current is excessive.In other embodiments, current-limiting circuit can also be that other forms have The circuit of current-limiting function, and the 3rd resistor R3 in being not limited to the above embodiments.

In some embodiments, as shown in figure 3, acoustic toy 100 further includes：4th capacitance C4.4th capacitance C4 connections At the both ends of loudspeaker, one end of the 4th capacitance C4 is grounded.Wherein, the 4th capacitance C4 can make as the 4th filter circuit from sounding The collision voltage that module 40 exports more is stablized, C4 values 470pF in the present embodiment.In other embodiments, the 4th filtered electrical Road can also be that other forms have the circuit of filter function, and the 4th capacitance C4 in being not limited to the above embodiments.

In some embodiments, as shown in figure 3, acoustic toy 100 further includes：Pull-up resistor R4 and third power supply U3.

One end of pull-up resistor R4 and the output end of voltage comparator circuit connect, and the other end of pull-up resistor R4 connects third Power supply U3, for making the level signal exported from output end O1 in controlled range.In the utility model embodiment, pull-up electricity Resistance value is 15K Ω, and the voltage value of third power supply U3 is 5V, then level signal can be low level 0V or high level 5V electricity Press signal.Specifically, when reference voltage is less than collision voltage, output end O1 exports high level signal, exports stable 5V electricity Signal is pressed, until being handled in single-chip microprocessor MCU；When reference voltage is more than collision voltage, the voltage signal of output end O1 outputs For 0V.

Above-mentioned first power supply U1, second source U2 and third power supply U3 are 5V DC voltages.

Complete description sends out the operation principle of prompt tone using circuit structure diagram shown in Fig. 3 below：

1. loudspeaker when by the effect of external force (colliding), generate a collision voltage, which passes through C4 After filtering and current limliting with R3, into the in-phase input end (anode) of U2A.

2.R1 and R2 forms concatenated bleeder circuit, and (U2 forms concatenated bleeder circuit for R1 and R2 and provides power supply, passes through After the filtering of C2, stable voltage-drop loading is formed in the bleeder circuit), after the filtering of C1, in 301 shape of first node At stable reference voltage, the reference voltage of the stabilization enters the inverting input of U2A.

3.U2A (U3 provides working power for U2A, after the filtering of C3, forms stable voltage-drop loading on U2A) In internal circuit the collision voltage of input is compared with reference voltage, if the collision voltage of in-phase input end is higher than anti- The reference voltage of phase input terminal, then O1 export high level 5V；If the collision voltage of in-phase input end is less than inverting input Reference voltage, O1 export low level 0V.

4.MCU exports U2A and (pull-up resistor R4 and 5V voltage is added on output end O1, makes the 5V signals that it is exported more Stablize, communicated with MCU with more reliable) level height handled, when for high level 5V, MCU enters at interruption Reason, and read the audio file in SD card and report；When being that MCU does not enter interrupt processing then for low level 0V.

In the utility model embodiment, the reference voltage that the bleeder circuit that is formed with R1 and R2 is exported from first node is For 0.95V, when the signal that horn vibration generates is more than 0.95V, U2A exports high level signal, and U2A further exports 5V letters Number arrive MCU I/O interfaces.The high level signal that MCU receives the 5V can be controlled to send out prompt and do not fall the voice of thing and be broadcast Report.Wherein, the different activation threshold value of comparator (i.e. reference voltage), threshold value can be set by the resistance value of the R1 and R2 in Fig. 3 It is arranged smaller, with regard to smaller, i.e. loudspeaker can send out prompt and not fall the amplitude vibrated needed for loudspeaker when bearing smaller dynamics The voice broadcast of thing.

The acoustic toy that the utility model embodiment provides can utilize movement of the coil in magnetic field in loudspeaker to generate Level signal, the level signal can control loudspeaker with trigger controller and make a sound, and in some embodiments, the level signal is also Interrupt signal can be used as so that controller is after receiving the level signal, can to the component in other work into Row interrupt processing.

It should be noted that giving the preferable implementation of the utility model in the specification and its attached drawing of the utility model Mode, still, the utility model can be realized by many different forms, however it is not limited to which this specification is described to be implemented Mode, these embodiments are not as the additional limitation to the utility model content, the purpose of providing these embodiments is that making It is more thorough and comprehensive to the understanding of the disclosure of the utility model.Also, above-mentioned each technical characteristic continues to be combined with each other, and is formed The various embodiments not being enumerated above are accordingly to be regarded as the range of the utility model specification record；Further, to this field For those of ordinary skill, it can be modified or changed according to the above description, and all these modifications and variations should all belong to The protection domain of the appended claims for the utility model.

Claims

1. a kind of acoustic toy, including sound module, which is characterized in that including：

Reference voltage generating circuit, for generating reference voltage；

Voltage comparator circuit, including first voltage input terminal, second voltage input terminal and output end, the first voltage input terminal The reference voltage is received, the second voltage input terminal connects the sound module, defeated from the sound module for receiving The collision voltage gone out；The output end is used to be believed according to the reference voltage and the comparison result output level of the collision voltage Number；

Control circuit, the control circuit are connect with the output end of the voltage comparator circuit and the sound module, the control Circuit processed controls the sound module according to the level signal and sends out voice prompt.

2. acoustic toy according to claim 1, which is characterized in that the sound module includes loudspeaker.

3. acoustic toy according to claim 2, which is characterized in that the reference voltage generating circuit includes first resistor And second resistance；

One end of the first resistor connects power supply, one end of the other end of the first resistor and the second resistance all with institute State the connection of first voltage input terminal, the other end ground connection of the second resistance.

4. acoustic toy according to claim 3, which is characterized in that the reference voltage generating circuit further includes the first filter One end of wave circuit, first filter circuit connects the first voltage input terminal, the other end of first filter circuit Ground connection.

5. acoustic toy according to claim 4, which is characterized in that the reference voltage generating circuit further includes the second filter Wave circuit, one end of second filter circuit are connected to one end that the first resistor is connected with the power supply, and described second The other end of filter circuit is grounded.

6. acoustic toy according to claim 1, which is characterized in that the voltage comparator circuit include voltage comparator and Third filter circuit, the voltage comparator includes in-phase input end, inverting input, compare output end, voltage input end and One end of voltage output end, the third filter circuit connects the voltage input end, and the other end connects the voltage output end, The voltage input end connects power supply, the voltage output end ground connection, and the inverting input of the voltage comparator is described the One voltage input end, in-phase input end are the second voltage input terminal, and the relatively output end is the voltage comparator circuit Output end.

7. acoustic toy according to claim 1, which is characterized in that further include：Current-limiting circuit, the one of the current-limiting circuit End connects the output end of the sound module, and the other end of the current-limiting circuit connects the second voltage input terminal.

8. acoustic toy according to claim 1, which is characterized in that further include：4th filter circuit, the 4th filtering One end of circuit connects the output end of the sound module, and the other end of the 4th filter circuit and the sound module connects Ground.

9. according to claim 1 to 8 any one of them acoustic toy, which is characterized in that further include：Pull-up resistor, it is described on One end of pull-up resistor is connect with the output end of the voltage comparator circuit, and the other end of the pull-up resistor connects power supply.

10. acoustic toy according to claim 9, which is characterized in that the control circuit includes：Power amplification circuit with Controller, the controller are connect with the input terminal of the power amplification circuit, the output end of the power amplification circuit and institute State sound module connection.