WO2013029495A1 - 一种声控电壁炉 - Google Patents

一种声控电壁炉 Download PDF

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Publication number
WO2013029495A1
WO2013029495A1 PCT/CN2012/080551 CN2012080551W WO2013029495A1 WO 2013029495 A1 WO2013029495 A1 WO 2013029495A1 CN 2012080551 W CN2012080551 W CN 2012080551W WO 2013029495 A1 WO2013029495 A1 WO 2013029495A1
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Prior art keywords
circuit
resistor
diode
capacitor
voice
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PCT/CN2012/080551
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English (en)
French (fr)
Inventor
吕威霖
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东莞崧崴电子科技有限公司
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Priority to GB1403317.9A priority Critical patent/GB2509007A/en
Publication of WO2013029495A1 publication Critical patent/WO2013029495A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/1808—Simulated fireplaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/04—Lighting devices or systems producing a varying lighting effect simulating flames
    • F21S10/043—Lighting devices or systems producing a varying lighting effect simulating flames by selectively switching fixed light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/002—Stoves
    • F24C7/004—Stoves simulating flames

Definitions

  • the present invention relates to the field of electric fireplaces, and more particularly to a voice-activated electric fireplace.
  • the origin of the fireplace can be traced back to the time when people used to use the "fire pond” to pick up, warm, and barbecue food when they first moved into the cave.
  • the three functions of lighting, heating, and grilling food gradually evolved and separated, and the fireplace became a dedicated heating device.
  • the fireplace has brought about new changes. From the morphological point of view, the fireplace is made up of a traditional wood burning fireplace, a gas fireplace, a charcoal fireplace, etc., and a new category is derived: an electric fireplace.
  • the electric fireplace is made by the European classical fireplace production process and the modern acoustic optics principle, which has greatly improved the design of the traditional fireplace. It creates a green and more powerful real wood burning effect without losing the elegance. .
  • the present invention is directed to the absence of the prior art, and its main object is to provide a voice-activated electric fireplace capable of receiving external sounds to control the brightness of the simulated flame, so that the simulated flame of the simulated charcoal is correspondingly changed with the audio. Dynamic changes with novel visual effects.
  • a voice-activated electric fireplace includes a housing and an imaging screen mounted in the housing, simulated charcoal located in front of and below the imaging screen, a flame-shaped plate located behind the imaging screen, a reflective component, and a first light source, under the simulated charcoal A second light source is disposed, and the soundproof generating unit that controls the fireplace to simulate the change of the brightness of the flame is disposed in the casing, and the sound control generating unit is connected to the second light source.
  • the sound generation generating unit is further connected to the first light source.
  • the circuit module of the sound generation generating unit comprises an acoustic-electric conversion circuit, a comparative amplification integrated chip, a sensitivity adjustment circuit, an input conditioning circuit, a voltage clamping circuit, a driving device, a step-down starting circuit, a protection circuit, and a power voltage stabilization circuit.
  • the control load is the foregoing second light source or further comprising a first light source;
  • the sound and electricity conversion circuit is electrically connected to the comparative amplification integrated chip, and the output signal end of the comparative amplification integrated chip is connected with the sensitivity adjustment circuit, and the comparison
  • the power supply terminal of the amplification integrated chip is connected to the power voltage stabilization circuit, and the voltage clamping circuit is connected to the input conditioning circuit, and the input conditioning circuit is connected with the control end of the driving device, and the output end of the driving device is connected to the control load, and the load is controlled.
  • a protection circuit connection is connected between the control load RL and the ground.
  • the acoustic-electrical conversion circuit comprises an acoustic-electrical converter, a current limiting resistor R1, and a coupling capacitor C4; one end of the acoustic-electrical converter is connected to one end of the current limiting resistor R1 and the coupling capacitor C4, and the other end is connected to the grounding end.
  • the other end of the current limiting resistor R1 is connected to the power supply VDD terminal, and the other end of the coupling capacitor C4 is connected to the IN terminal of the comparative amplification integrated chip 21.
  • the acoustic-electric converter is a microphone MIC.
  • the sensitivity adjustment circuit includes a potentiometer SK for adjusting the amplitude of the input sound signal, three resistors R2, R3, R4 and a coupling capacitor C8; the third leg of the potentiometer SK is connected to one end of the coupling capacitor C8, and the potential
  • the second leg of the SK is connected to one end of the resistor R4, and the first leg of the potentiometer SK is connected to the ground;
  • one end of the coupling capacitor C8 and the resistor R2 is connected to the signal input end of the comparative amplifier chip, and the other end of the resistor R4 Connected to the signal output end of the comparative amplifier chip, the other end of the resistor R2 is connected to one end of the resistor R3, and then connected to the comparison signal input end of the comparative amplifier chip, and the other end of the resistor R3 is connected with the ground terminal to form a sensitivity control loop.
  • the input conditioning circuit comprises a capacitor C3, a diode D1 and a current limiting resistor R5; one end of the capacitor C3 is connected to the signal output terminal OUT of the comparative amplifying integrated chip, and the other end of the capacitor C3 is connected to the anode of the diode D1, and the diode D1
  • the negative pole is connected to one end of the current limiting resistor R5, and the other end of the current limiting resistor R5 is connected to the base control end of the driving component.
  • the voltage clamping circuit comprises capacitors C5, C6 and diodes D2, D3; one end of the capacitor C5 is connected to the negative terminal of the diode D3, and the other end of the capacitor C5 is connected to the ground, the negative pole of the diode D2 and the diode D3
  • the anode is connected to one end of the capacitor C3 and the anode of the diode D1, and the other end of the diode D2 is connected to the ground; one end of the capacitor C6 is connected to the ground, and the other end is connected to the cathode of the diode D1 and one end of the resistor R5. together.
  • the power supply voltage stabilizing circuit comprises a capacitor C1, C2 and a voltage stabilizing module U1; the input terminal Vin of the voltage stabilizing module U1 is connected with the power source V+, and the grounding end GND of the voltage stabilizing module U1 is connected with the ground line, and the voltage stabilizing module
  • the output terminal Vout of U1 is connected to the comparative amplification integrated chip and the acoustic-electric conversion circuit.
  • control load is an LED light group or a low voltage light bulb.
  • the present invention has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions that the sound control unit is integrated with a common electric fireplace, and the electric fireplace is used to simulate the charcoal under the sound.
  • the brightness of the second light source realizes that the flame energy of the simulated charcoal changes with the change of the external audio signal, and the dynamic flame change effect is generated, which effectively solves the problem that the flame picture existing in the existing electric fireplace is similar and different, and cannot be changed in real time through the external sound.
  • This new sound control design effect changes the design idea of the electric fireplace, breaking the current situation of the development of the electric fireplace industry, and truly affecting the flame system of the entire electric fireplace industry, with far-reaching significance.
  • FIG. 1 is a schematic view showing the internal structure of an embodiment of the present invention.
  • FIG. 2 is a circuit schematic diagram of an embodiment of the present invention.
  • the present invention relates to a voice-activated electric fireplace, which converts a sound signal into a driving voltage signal by an acoustic-electrical converter when the sound is generated externally, and controls the brightness of the simulated flame so that the simulated flame energy of the simulated charcoal can follow The size of the input sound changes accordingly, and the dynamic change effect of the flame is more realistic.
  • FIG. 1 and FIG. 2 show the specific structure of the preferred embodiment of the present invention.
  • the voice-activated electric fireplace includes a housing 8, an imaging screen 10 fixed in the housing, and a tempered glass 1 covering the front of the housing.
  • a simulated charcoal 3 is mounted on the front and lower sides of the imaging screen 10.
  • the back surface of the imaging screen 10 and the housing 8 enclose a flame imaging chamber 11.
  • the flame imaging chamber 11 is provided with a reflective component 6 driven by a motor, and the reflective assembly
  • a flame-shaped plate 7 is disposed between the image and the imaging screen 10, and a first light source 5 is disposed under the reflective component 6.
  • the reflective component 6 rotates while reflecting the light emitted by the first light source 5 to the flame-shaped plate 7 through the flame.
  • the shape plate 7 is filtered to the image forming screen 10 to form a flame pattern, and the observer can see a realistic flame effect from the front side of the tempered glass 1.
  • a second light source 4 is disposed below the simulated charcoal 3.
  • the second light source 4 is an LED light group or a low voltage light bulb, and the second light source 4 is in the shell of the sound control electric fireplace.
  • a sound generation generating unit 9 is disposed in the eighth, and the sound control generating unit 9 is connected to the second light source.
  • the sound generation generating unit may be further connected to the first light source.
  • the voice control unit 9 includes a sound and electricity conversion circuit 22, a comparison amplification integrated chip 21, a sensitivity adjustment circuit 26, an input conditioning circuit 24, a voltage clamping circuit 25, a driving device 27, a step-down starting circuit 28, a protection circuit 29, and a power supply.
  • the voltage circuit 23 and the control load 30 are the second light source or further include a first light source.
  • the sound/electrical conversion circuit 22 is electrically connected to the comparison amplification integrated circuit 21, and the output signal end of the comparison amplification integrated chip 21 is connected to the sensitivity adjustment circuit 26, and the power supply terminal of the comparison amplification integrated chip 21 is connected to the power supply voltage stabilization circuit 23.
  • the voltage clamping circuit 25 is connected to the input conditioning circuit 24, and the input conditioning circuit 24 is connected to the control terminal of the driving device 27.
  • the output of the driving device 27 is connected to the control load 30, and the control load 30 is connected to the protection circuit 29.
  • the buck start circuit 28 is connected between the control load 30 and the ground.
  • the above-described acoustic-electrical conversion circuit 22 includes an acoustic-electrical converter, a current limiting resistor R1, and a coupling capacitor C4.
  • the acoustic-electrical converter can be a microphone MIC or an ultrasonic device that is responsible for receiving external acoustic signals and performing acoustic-electric signal conversion.
  • the acoustic-electric converter adopts a microphone MIC, and one end of the MIC is connected to one end of the current limiting resistor R1 and the coupling capacitor C4, and the other end is connected to the ground, and the other end of the current limiting resistor R1 is connected with the power terminal VDD.
  • the other end of the coupling capacitor C4 is connected to the input terminal IN of the comparative amplification integrated chip 21.
  • the size of the microphone MIC is ⁇ 9.7 mm*H6.7 mm.
  • the sensitivity adjustment circuit 26 described above includes a potentiometer SK, resistors R2, R3, R4 and a coupling capacitor C8.
  • the potentiometer SK mainly adjusts the signal amplitude of the input sound, and the pin type three-pin in-line structure, the third leg of the potentiometer is connected with one end of the coupling capacitor C8, and the second leg is connected with one end of the resistor R4, the first leg and the ground end connection.
  • One end of the capacitor C8 and the resistor R2 is connected to the signal input end of the comparative amplifier chip 21, and the other end of the resistor R4 is connected to the signal output end of the comparative amplifier chip 21.
  • the other end of the resistor R2 is connected to one end of the resistor R3. Connected to the comparison signal input terminal of the comparison amplification integrated chip 21, the other end of the resistor R3 is connected to the ground terminal to form a sensitivity control loop.
  • the input conditioning circuit 24 described above includes a capacitor C3, a diode D1, and a current limiting resistor R5.
  • One end of the capacitor C3 is connected to the signal output end OUT of the comparative amplifier chip 21, the other end of the capacitor C3 is connected to the anode of the diode D1, the cathode of the diode D1 is connected to one end of the current limiting resistor R5, and the other end of the current limiting resistor R5 is connected to the driving part.
  • the base control terminal of 18 is connected.
  • the voltage clamping circuit 25 described above includes capacitors C5, C6 and diodes D2, D3.
  • One end of the capacitor C5 is connected to the negative end of the diode D3, and the other end of the capacitor C5 is connected to the ground.
  • the cathode of the diode D2 and the anode of the diode D3 are respectively connected to one end of the capacitor C3 and the anode of the diode D1, and the other end of the diode D2. Connect to the ground.
  • One end of the capacitor C6 is connected to the ground, and the other end is connected to the cathode of the diode D1 and one end of the resistor R5.
  • the power supply voltage regulator circuit 23 described above includes capacitors C1 and C2 and a voltage stabilizing module U1.
  • the input terminal Vin of the voltage regulator module U1 is connected to the power supply terminal V+, the ground terminal GND of the voltage regulator module U1 is connected to the ground line, and the output terminal Vout of the voltage regulator module U1 outputs the regulated power supply VDD, which is a comparative amplification integrated chip 21 and
  • the acoustic-electric conversion circuit 22 supplies a power supply VDD.
  • the above-described driving device 27, control load 30, step-down starting circuit 28, and protection circuit 29 constitute a perfect drive control circuit.
  • the driving device 27 includes a transistor Q1 and a transistor Q2; the step-down starting circuit 28 includes diodes D4, D5, D6, and D7; and the protection circuit 29 includes a diode D8 and a capacitor C7.
  • the connection relationship of each of the electronic components is such that one end of the diode D8 and one end of the capacitor C7 are connected to the collector of the transistor Q2, and the other end of the diode D8 and the other end of the capacitor C7 are connected to the power supply access terminal V+.
  • the transistors Q1 and Q2 form a composite tube, the emitter of the transistor Q1 is connected to the base of the transistor Q2, the collector of the transistor Q1 is connected to one end of the resistor R6, the other end of the resistor R6 is connected to the power source V+, and the resistor R6 provides an upper bias to the collector of the transistor Q1.
  • the collector of the transistor Q2 is connected to one end of the control load RL, and the other end of the control load RL is connected to the power supply terminal V+.
  • the buck start circuit 28 provides a lower starting power to the control load RL to prevent the control load RL from being instantaneously de-energized.
  • the positive connection of the diode D4 controls the end of the load RL and the collector of the transistor Q2, and the negative terminal of the diode D4 is connected to the diode D5.
  • the positive electrode, the negative electrode of the diode D5 is connected to the positive electrode of the diode D6, the negative electrode of the diode D6 is connected to the positive electrode of the diode D7, the negative electrode of the diode D7, and the emitter of the transistor Q2 are connected to the ground.
  • the base of the transistor Q1 has a signal input
  • the emitter output control signal from the transistor Q1 is output to the base of the transistor Q2, and the collector of the transistor Q2 is electrically turned on, and the control load RL is turned on.
  • the transistors Q1 and Q2 of the driving device are power three-stage tubes, wherein the triode tube Q2 uses a medium power transistor; the step-down component of the step-down starting circuit 28 uses diodes D4, D5, D6, and D7 to step down in series, however,
  • the circuit configuration is not limited to this, and the diode can be replaced by a high-power resistor, and the voltage is reduced by a high-power resistor;
  • the control load RL is an LED series lamp set disposed under the simulated charcoal, and each LED lamp is controlled by a voice-activated unit to make the LED-type The brightness varies with the strength of the audio signal.
  • the circuit principle of the voice-activated generating unit 9 is that the sound-electrical converting circuit 22 converts the sound signal into an electrical signal, and transmits it to the comparative-amplifying integrated chip 21, and compares and amplifies the internal circuit of the integrated circuit 21 to perform voltage comparison, and the output signal is
  • the sensitivity adjustment circuit 26 performs control, wherein the power supply for comparing the amplification integrated chip 21 is regulated by the power supply voltage regulator circuit 23, the voltage clamp circuit 25 is connected to the input conditioning circuit 24, and the input conditioning circuit 24 is connected to the control terminal of the driving device 27.
  • the output of the driving device 27 is connected to the control load 30, and the control load 30 is reverse-voltage protected by the protection circuit 29, thereby achieving the control effect on the control load 30.
  • the design of the present invention focuses on the fact that the sound generation unit and the ordinary electric fireplace are integrated into one body, and the brightness of the second light source under the simulated charcoal under the electric fireplace is controlled by sound to realize the flame energy of the simulated charcoal.
  • the change of the external audio signal changes, and the dynamic flame change effect is produced, which effectively solves the problem that the flame picture existing in the existing electric fireplace is similar and different, and cannot be changed in real time by the external sound, and truly simulates the scene reproduction when the charcoal is burned. Its flame dynamics are more perfect, more realistic and more enjoyable.
  • This new sound control design effect changes the design idea of the electric fireplace, breaking the current situation of the development of the electric fireplace industry, and truly affecting the flame system of the entire electric fireplace industry, with far-reaching significance.

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Abstract

一种声控电壁炉，包括壳体（8）和安装在壳体（8）中的成像屏（10）、位于成像屏（10）前下方的仿真木炭（3）、位于成像屏（10）后下方的火焰形状板（7）、反光组件（6）及第一光源组件（5），所述仿真木炭（3）下方设置有第二光源（4），所述壳体（8）内设有控制壁炉模拟火焰明暗变化的声控发生单元（9），该声控发生单元（9）与第二光源（4）连接，进一步的，该声控发生单元（9）同时与第一光源（5）连接；借此，用声音控制电壁炉模拟火焰的明暗，实现仿真木炭（3）的火焰能随着外部音频信号变化而变化，产生动态的火焰变化效果，真正做到仿真木炭（3）燃烧时的情景再现，使其火焰动态变化效果更完美、更逼真、更具有欣赏性。

Description

一种声控电壁炉 技术领域
本发明涉及电壁炉领域技术，尤其指一种声控电壁炉。
背景技术
壁炉的起源，可以追溯到人类刚移居进山洞时利用“火塘”采光、取暖、烧烤食物时期。随着生产力的发展，采光、取暖、烧烤食物这三个功能逐渐进化和分离，壁炉成为专用的采暖设备。
随着时代的发展，壁炉带来了新的变化，从形态上来说，壁炉由传统的燃木壁炉、燃气壁炉、炭火壁炉等，进而衍生出新的品类：电壁炉。电壁炉是引用欧洲古典壁炉生产工艺和现代声光学原理制成，其使传统的壁炉在设计上得到了极大的改观，在不失典雅中造就了绿色环保和更具炙烈的真木燃烧效果。
在现代社会，电壁炉迎来快速发展，大有完全替代传统壁炉的趋势。人类在享受电壁炉带来便利同时，也对其提出了更多样的现代要求。对于现有的电壁炉产品，背景火焰和仿真木炭明、暗的变化是按照固定的模式而变化，比较单一，无法做到真实火焰的动态变化，造成对电壁炉设计思想的束缚，阻碍人们对此技术领域的研究和开发，影响了电壁炉行业的发展。
发明内容
有鉴于此，本发明针对现有技术存在之缺失，其主要目的是提供一种声控电壁炉，能够接受外部声音来控制模拟火焰的明暗，使仿真木炭的模拟火焰随着音频的变化而产生相应的动态变化，具有新奇视觉效果。
为实现上述目的，本发明采用如下之技术方案：
一种声控电壁炉，包括壳体和安装在壳体中的成像屏、位于成像屏前下方的仿真木炭、位于成像屏后下方的火焰形状板、反光组件及第一光源，所述仿真木炭下方设置有第二光源，所述壳体内设有控制壁炉模拟火焰明暗变化的声控发生单元，该声控发生单元与第二光源连接。
优选的，所述声控发生单元进一步与第一光源连接。
优选的，所述声控发生单元的电路模块包括声电转换电路、比较放大集成芯片、灵敏度调节电路、输入调理电路、电压钳位电路、驱动器件、降压启动电路、保护电路、电源稳压电路及控制负载，该控制负载为前述第二光源或进一步包括第一光源；该声电转换电路与比较放大集成芯片电连接，该比较放大集成芯片的输出信号端与灵敏度调节电路连接，且该比较放大集成芯片的供电电源端与电源稳压电路连接，该电压钳位电路与输入调理电路连接，该输入调理电路与驱动器件的控制端连接，该驱动器件的输出端连接控制负载，控制负载与保护电路连接，该降压启动电路连接于控制负载RL和接地端之间。
优选的，所述声电转换电路包括声电转换器、限流电阻R1、耦合电容C4；该声电转换器的一端与限流电阻R1和耦合电容C4的一端连接，另一端与接地端连接，限流电阻R1另一端与电源VDD端连接，耦合电容C4的另一端与比较放大集成芯片21的IN端连接。
优选的，所述声电转换器为咪头MIC。
优选的，所述灵敏度调节电路包括一调节输入声音信号幅度的电位器SK、三电阻R2、R3、R4和一耦合电容C8；该电位器SK的第三脚与耦合电容C8的一端连接，电位器SK的第二脚与电阻R4的一端连接，电位器SK的第一脚与接地端连接；该耦合电容C8和电阻R2的一端接在比较放大集成芯片的信号输入端，电阻R4的另一端接在比较放大集成芯片的信号输出端，该电阻R2的另一端与电阻R3的一端连接后，接在比较放大集成芯片的比较信号输入端，电阻R3的另一端与接地端连接形成灵敏度控制回路。
优选的，所述输入调理电路包括电容C3、二极管D1和限流电阻R5；该电容C3的一端接在比较放大集成芯片的信号输出端OUT，电容C3的另一端接二极管D1的正极，二极管D1的负极连接限流电阻R5的一端，该限流电阻R5的另一端与驱动部件的基极控制端连接。
优选的，所述电压钳位电路包括电容C5、C6和二极管D2、D3；该电容C5的一端连接二极管D3的负极端，电容C5的另一端与接地端连接，该二极管D2的负极和二极管D3的正极分别与电容C3的一端、二极管D1的正极接在一起，二极管D2的另一端与接地端连接；电容C6的一端与接地端连接，另一端与二极管D1的负极和电阻R5的一端接在一起。
优选的，所述电源稳压电路包括电容C1、C2和稳压模块U1；该稳压模块U1的输入端Vin与电源V+连接，稳压模块U1的接地端GND与地线连接，稳压模块U1的输出端Vout与比较放大集成芯片和声电转换电路连接。
优选的，所述控制负载为LED灯组或低压灯泡。
本发明与现有技术相比具有明显的优点和有益效果，具体而言，由上述技术方案可知，其主要是通过将声控发生单元与普通电壁炉结合为一体，用声音控制电壁炉仿真木炭下方第二光源的明暗，实现仿真木炭的火焰能随着外部音频信号变化而变化，产生动态的火焰变化效果，有效地解决了现有电壁炉存在的火焰画面大同小异、不能通过外部声音实时变化的问题，真正做到仿真木炭燃烧时的情景再现，使其火焰动态变化效果更完美、更逼真、更具有欣赏性。这种全新声控设计效果改变电壁炉的设计思想，打破电壁炉行业发展泄后的现状，真正影响到整个电壁炉行业的火焰系统，具有深远的影响意义。
附图说明
图1是本发明之实施例的内部结构示意图；
图2是本发明之实施例的电路原理图。
附图标识说明：
1、钢化玻璃 2、声电转换器
3、仿真木炭 4、第二光源
5、第一光源 6、反光组件
7、火焰形成板 8、壳体
9、声控发生单元 10、成像屏
11、火焰成像室
21、比较放大集成芯片 22、声电转换电路
23、电源稳压电路 24、输入调理电路
25、电压钳位电路 26、灵敏度调节电路
27、驱动器件 28、降压启动电路
29、保护电路 30、控制负载
具体实施方式
首先，本发明涉及一种声控电壁炉，在外部产生声音时，该声控电壁炉由声电转换器把声音信号转换为驱动电压信号，控制模拟火焰的明暗，使仿真木炭的模拟火焰能随着输入的声音大小而相应变化，火焰动态变化效果更逼真。请参照图1和图2所示，其显示出了本发明之较佳实施例的具体结构，下面结合附图，对本发明的特征作详细说明：
如图1所示，该声控电壁炉包括壳体8、固装于壳体中的成像屏10以及覆盖在壳体前部的钢化玻璃1。成像屏10的前下方安装有仿真木炭3，成像屏10的背面与壳体8围成有一火焰成像室11，在火焰成像室11内设有由电机带动可旋转的反光组件6、该反光组件6与成像屏10之间设有火焰形状板7，该反光组件6下方设有第一光源5，该反光组件6转动的同时将第一光源5发出的光反射至火焰形状板7，通过火焰形状板7过滤至成像屏10形成火焰图样，观察者从钢化玻璃1正面可以看到逼真的火焰效果。
承上，结合图1及图2所示，于仿真木炭3下方设有第二光源4，该第二光源4为LED灯组或低压灯泡，针对该第二光源4在声控电壁炉的壳体8内设置有声控发生单元9，该声控发生单元9与第二光源连接，当然，所述声控发生单元也可以进一步与第一光源连接。
该声控发生单元9包括声电转换电路22、比较放大集成芯片21、灵敏度调节电路26、输入调理电路24、电压钳位电路25、驱动器件27、降压启动电路28、保护电路29、电源稳压电路23及控制负载30，该控制负载为第二光源或进一步包括第一光源。该声电转换电路22与比较放大集成芯片21电连接，该比较放大集成芯片21的输出信号端与灵敏度调节电路26连接，且该比较放大集成芯片21的供电电源端与电源稳压电路23连接，该电压钳位电路25与输入调理电路24连接，该输入调理电路24与驱动器件27的控制端连接，该驱动器件27的输出端连接控制负载30，控制负载30与保护电路29连接，该降压启动电路28连接于控制负载30和接地端之间。
以下将对该声控发生单元9中构成电路的各个模块进行详细说明：
上述的声电转换电路22包括声电转换器、限流电阻R1、耦合电容C4。该声电转换器可以是咪头MIC或超声波器件，其负责接收外界声间信号并且进行声电信号转换。在本实施例中，声电转换器采用咪头MIC，该咪头MIC一端与限流电阻R1和耦合电容C4的一端连接，另一端与接地端连接，限流电阻R1另一端与电源端VDD连接，该耦合电容C4的另一端与比较放大集成芯片21的输入端IN连接。本实施例中，咪头MIC采用的尺寸为￠9.7mm*H6.7mm。
上述的灵敏度调节电路26包括电位器SK、电阻R2、R3、R4和耦合电容C8。该电位器SK主要调节输入声音的信号幅度，其针式三脚直插结构，电位器的第三脚与耦合电容C8的一端连接，第二脚与电阻R4的一端连接，第一脚与接地端连接。该电容C8和电阻R2的一端接在比较放大集成芯片21的信号输入端，电阻R4的另一端接在比较放大集成芯片21的信号输出端，电阻R2的另一端与电阻R3的一端连接后，接在比较放大集成芯片21的比较信号输入端，电阻R3的另一端与接地端连接，形成灵敏度控制回路。
上述的输入调理电路24包括电容C3、二极管D1和限流电阻R5。电容C3的一端接在比较放大集成芯片21的信号输出端OUT，电容C3的另一端接二极管D1的正极，二极管D1的负极连接限流电阻R5的一端，限流电阻R5的另一端与驱动部件18的基极控制端连接。
上述的电压钳位电路25包括电容C5、C6和二极管D2、D3。电容C5的一端连接二极管D3的负极端，电容C5的另一端与接地端连接，二极管D2的负极和二极管D3的正极分别与电容C3的一端、二极管D1的正极接在一起，二极管D2的另一端与接地端连接。该电容C6的一端与接地端连接，另一端与二极管D1的负极和电阻R5的一端接在一起。
上述的电源稳压电路23包括电容C1、C2和稳压模块U1。稳压模块U1的输入端Vin连接电源接入端V+，稳压模块U1的接地端GND与地线连接，稳压模块U1的输出端Vout输出稳压的电源VDD，为比较放大集成芯片21和声电转换电路22提供电源VDD。
上述的驱动器件27、控制负载30、降压启动电路28和保护电路29构成完善的驱动控制电路。其中驱动器件27包括三极管Q1和三极管Q2；降压启动电路28包括二极管D4、D5、D6、D7；保护电路29包括二极管D8和电容C7。前述各电子元器件的连接关系为：二极管D8的正极和电容C7的一端与三极管Q2的集电极连接，二极管D8的负极和电容C7的另一端与电源接入端V+连接。三极管Q1、Q2组成复合管，三极管Q1的发射极接三极管Q2的基极，三极管Q1的集电极接电阻R6的一端，电阻R6另一端与电源V+连接，电阻R6给三极管Q1集电极提供上偏置电源。三极管Q2的集电极接控制负载RL的一端，控制负载RL的另一端与电源接入端V+连接。该降压启动电路28给控制负载RL提供较低的起动电源，防止控制负载RL瞬间失电，其中二极管D4的正极连接控制负载RL一端和三极管Q2的集电极，二极管D4的负极接二极管D5的正极，二极管D5的负极接二极管D6的正极，二极管D6的负极接二极管D7的正极，二极管D7的负极、三极管Q2的发射极和接地端连接。当三极管Q1的基极有信号输入时，从三极管Q1发射极输出控制信号到三极管Q2的基极，三极管Q2集电极得电导通，控制负载RL接通工作。
本实施例中，驱动器件的三极管Q1、Q2是功率三级管，其中三极管Q2采用中功率三极管；降压启动电路28的降压组件采用二极管D4、D5、D6、D7串联降压，然而其电路构成不限于此，也可以将二极管用大功率电阻替代，用大功率电阻降低电压；控制负载RL为设置于仿真木炭下方的LED串联灯组，各LED灯由声控发生单元控制使LED类的亮度随音频信号的强弱而变化。
该声控发生单元9的电路原理为：所述声电转换电路22把声音信号转换为电信号，传输到比较放大集成芯片21，经过比较放大集成芯片21内部电路放大信号进行电压比较,输出信号由灵敏度调节电路26进行控制，其中比较放大集成芯片21的供电电源由电源稳压电路23稳压提供，电压钳位电路25与输入调理电路24连接，输入调理电路24与驱动器件27的控制端连接，驱动器件27的输出端连接控制负载30，控制负载30由保护电路29进行反向电压保护，从而实现对控制负载30的控制效果。
综上所述，本发明的设计重点在于，其主要是通过将声控发生单元与普通电壁炉结合为一体，用声音控制电壁炉之仿真木炭下方第二光源的明暗，实现仿真木炭的火焰能随着外部音频信号变化而变化，产生动态的火焰变化效果，有效地解决了现有电壁炉存在的火焰画面大同小异、不能通过外部声音实时变化的问题，真正做到仿真木炭燃烧时的情景再现，使其火焰动态变化效果更完美、更逼真、更具有欣赏性。这种全新声控设计效果改变电壁炉的设计思想，打破电壁炉行业发展泄后的现状，真正影响到整个电壁炉行业的火焰系统，具有深远的影响意义。
以上所述，仅是本发明的较佳实施例而已，并非对本发明的技术范围作任何限制，故凡是依据本发明的技术实质对以上实施例所作的任何细微修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (10)

1、一种声控电壁炉，包括壳体和安装在壳体中的成像屏、位于成像屏前下方的仿真木炭、位于成像屏后下方的火焰形状板、反光组件及第一光源，其特征在于：所述仿真木炭下方设置有第二光源，所述壳体内设有控制壁炉模拟火焰明暗变化的声控发生单元，该声控发生单元与第二光源连接。
2、根据权利要求1所述的一种声控电壁炉，其特征在于：所述声控发生单元进一步与第一光源连接。
3、根据权利要求1所述的一种声控电壁炉，其特征在于：所述声控发生单元的电路模块包括声电转换电路、比较放大集成芯片、灵敏度调节电路、输入调理电路、电压钳位电路、驱动器件、降压启动电路、保护电路、电源稳压电路及控制负载，该控制负载为前述第二光源或进一步包括第一光源；该声电转换电路与比较放大集成芯片电连接，该比较放大集成芯片的输出信号端与灵敏度调节电路连接，且该比较放大集成芯片的供电电源端与电源稳压电路连接，该电压钳位电路与输入调理电路连接，该输入调理电路与驱动器件的控制端连接，该驱动器件的输出端连接控制负载，控制负载与保护电路连接，该降压启动电路连接于控制负载RL和接地端之间。
4、根据权利要求3所述的一种声控电壁炉，其特征在于：所述声电转换电路包括声电转换器、限流电阻R1、耦合电容C4；该声电转换器的一端与限流电阻R1和耦合电容C4的一端连接，另一端与接地端连接，限流电阻R1另一端与电源VDD端连接，耦合电容C4的另一端与比较放大集成芯片21的IN端连接。
5、根据权利要求4所述的一种声控电壁炉，其特征在于：所述声电转换器为咪头MIC。
6、根据权利要求3所述的一种声控电壁炉，其特征在于：所述灵敏度调节电路包括一调节输入声音信号幅度的电位器SK、三电阻R2、R3、R4和一耦合电容C8；该电位器SK的第三脚与耦合电容C8的一端连接，电位器SK的第二脚与电阻R4的一端连接，电位器SK的第一脚与接地端连接；该耦合电容C8和电阻R2的一端接在比较放大集成芯片的信号输入端，电阻R4的另一端接在比较放大集成芯片的信号输出端，该电阻R2的另一端与电阻R3的一端连接后，接在比较放大集成芯片的比较信号输入端，电阻R3的另一端与接地端连接形成灵敏度控制回路。
7、根据权利要求3所述的一种声控电壁炉，其特征在于：所述输入调理电路包括电容C3、二极管D1和限流电阻R5；该电容C3的一端接在比较放大集成芯片的信号输出端OUT，电容C3的另一端接二极管D1的正极，二极管D1的负极连接限流电阻R5的一端，该限流电阻R5的另一端与驱动部件的基极控制端连接。
8、根据权利要求3所述的一种声控电壁炉，其特征在于：所述电压钳位电路包括电容C5、C6和二极管D2、D3；该电容C5的一端连接二极管D3的负极端，电容C5的另一端与接地端连接，该二极管D2的负极和二极管D3的正极分别与电容C3的一端、二极管D1的正极接在一起，二极管D2的另一端与接地端连接；电容C6的一端与接地端连接，另一端与二极管D1的负极和电阻R5的一端接在一起。
9、根据权利要求3所述的一种声控电壁炉，其特征在于：所述电源稳压电路包括电容C1、C2和稳压模块U1；该稳压模块U1的输入端Vin与电源V+连接，稳压模块U1的接地端GND与地线连接，稳压模块U1的输出端Vout与比较放大集成芯片和声电转换电路连接。
10、根据权利要求3所述的一种声控电壁炉，其特征在于：所述控制负载为LED灯组或低压灯泡。
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CN102353091A (zh) * 2011-08-26 2012-02-15 东莞崧崴电子科技有限公司 一种声控电壁炉
CN202281310U (zh) * 2011-08-26 2012-06-20 东莞崧崴电子科技有限公司 一种声控电壁炉

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