Voice signal from the microphone ВМ1 is supplied to bases of transistors VT1, VT11, VT22 and VT25 block filters. Transistors VT2, VT3, VT4 assembled filter high frequencies that emit from a speech signal, the hissing sounds of “s, u, z”, which filters out high-frequency filter, passing the chain C1 — VT2 — VT3 — R6 — VT4. Additionally, the signal sounds “C, d, s” filtered circuit of the transistors VT5 and VT6, the capacitor C2, resistors R8 — R11. The obtained constant voltage equal to the level of the sound signal “C” passes the chain R12 — W — R13. The signal sounds “C, d, s” with their voltage level passes through the circuit R32 — C5 — R34. The same signal sounds “C, d, s” through resistor R33 opens the transistor VT15. Received through the diode VD2 to the base of transistor VT7 voice sound signal “C” it opens, and the transistor VT8 is closed. Formed on the VT8 collector voltage charges the capacitor C4. The charged capacitor maintains the open state, the transistor VT7, and VT8 of the transistor remains closed. The sound signal “C” received at the base of the transistor VТ7, memorized logic element, assembled on the VТ7 and VТ8 transistors, resistors R14 — R17, the capacitor C4 of the memory circuits. The high level signal from the collector of transistor /T8 is double delay line, collected on transistors /VТ T9 and 10, the resistors R18 — R22, capacitor C6, diode VD1 and the VТ19 and VТ21 transistors, resistors R23, R67, R69, R70, R72, capacitor C12, diode VD9, and through the diode VD4 is supplied to the base of transistor VТ8, opening it. Thus transistor VТ7 closed. The voltage on the collector will be zero. There will be no signal memorizing sound.
When entering through diode VDЗ signal sounds of “C” or “z” on the base VТ16 the transistor opens and closes VТ17. This logical element, a memory circuit (transistors VT16, VT17) stores the signal of the sound “TS” or “z” at the time of the voltage of high level from the collector of transistor VТ 17 through the delay line transistors VТ18 and VТ20, resistors R39 — R43, capacitor C7, diode VD5. Via the VD6 diode voltage high-level acting at the base of the transistor VТ 17, opens it. Thus transistor 16 will be closed VТ. The voltage at the collector of transistor VТ17 will be zero. There will be no signal memorizing the sound “TS” or “z”.
Fig. 1. Circuit diagram of remote control for home appliances by voice
In time, when the voltage at the collector of transistor VТ8 will be high-level, there is a sound signal “C” which passes through resistor R97 to the base of transistor VТ46, open it up. Further, the voltage of high level from the collector of transistor VТ17 through a resistor R105 opens the transistor VТ51, which in turn blocks the opening of the transistor VТ49, preventing flow through the resistor R101 to the high voltage level from the collector of transistor VТЗЗ. Simultaneously, the voltage from the collector of transistor VT17 through resistors R81 and R109 is supplied to bases of transistors VТ39 and VТ53, opening them. Collectors VТ39 and VТ53 connected with the emitters of transistors VТ38 and VТ52, which in turn gives you the opportunity to open these transistors when applying for their base voltage of high level.
Function of the first low-pass filter performs the transistors VТ12 — VT14, resistors R25 — R31, capacitors C8 and C9, the Audio signals pass through this filter. Outdoor transistor VT15 prevents the passage of hissing sounds in the speech signal from the collector of transistor VT14, where the low-frequency signal is supplied through a resistor R76 to the base of the transistor VT36, opening it. Thus transistor VT37 closes. The resulting high voltage from the collector of transistor VT37 through a capacitor C20 (smoothing the high ripple voltage), the resistor R85 is supplied to the base of transistor VT40, opening it. The voltage at the voltage divider consisting of resistors R84 and R89, will become equal to zero through the diode VD10 and outdoor transistor VT40.
After passing through the first filter, the speech signal of the word “sound” comes in the form of sound “sound” through a resistor R107 to the capacitor C25, the selectable voltage passing through the resistor R108 and the diode VD14, opens the transistor VT52 memory circuits. Transistor VT53 standing in the chain of the emitter of the transistor VT52, is also open as its base voltage is present signal remember the “s” sound coming from the collector of transistor VT17 through the resistor R109. This closes the transistor VT54, and the high voltage level of its collector through a resistor R115 opens the transistor VT56. Upon the occurrence of a pause (spoken word) the transistor VT55, as in the circuit of voltage divider resistors R84, R89 closed the VT40 transistor and the voltage through resistor R114 will open the transistor VT55. Then the transistor VT57 will be closed and the resulting high voltage level at its collector through resistor R123 will arrive at the base of the transistor VТ61, opening it. Transistor VТ62 is also open. Closes the transistor VТ63, and the resulting high level voltage on its collector goes to the output 12 of the control panel.
The second low-pass filter includes transistors VТ25, VТ27, VТ29, resistors R50, R52, R54, R55, capacitor C15.
Higher frequency components of the audio signal pass through the filter chain C13 — VТ23 — R47 — C14 — VТ24 — Н49 — VТ26 — R5З, walking to the base of transistor VТ28, opening it and preventing the passage from the collector of transistor VТ25 hissing sounds of the voice signal.
as a result, the voice signal from the collector of transistor VT25 passes further along the chain C15 — VT27 — R54 — VT29 — R56 — C16 — VT30 — R58 — VT31, where the resulting voltage at the collector of the transistor VT31 is supplied through a resistor R77 to the capacitor C24, the voltage level which corresponds to the signal of the sound “wet” in the word “light” or “color”. The voltage released at the capacitor C24 through the resistor R80, the diode VD12, opens the transistor VT38 memory circuits. Standing in its emitter circuit of the transistor VT39 is also open, since its base receives the voltage high signal level the memorization of the sound “TS” or “C” the collector of transistor VT17 through a resistor R81. Thus the transistor VT41 closes. The high level voltage generated at its collector through a resistor R90 will open the transistor VТ43. Standing in the circuit of its collector, the transistor VТ42 if you pause when the word is uttered, will also be open. Closes the transistor VТ44. The high voltage level of its collector through a resistor R95 open VТ58 transistor in the emitter circuit of which is transistor VТ59, which is open a high voltage level at its base from voltage divider resistors R120 иR121. Accordingly, the transistor will be closed VТ60, and the resulting high level voltage on its collector goes to the output 9 of the control panel. Thus, at the output 9 of the control panel the alarm control command “color”.
Fig. 2. A printed circuit Board of the control panel (refer base, collector and emitter of transistor Latin letters, C and E, respectively)
If the spoken word “light” sound signal “C” of the transistor VТ8 through a resistor R97 to its high voltage level opens the transistor VТ46, then the voltage divider of resistors R120, R121 will be equal to zero. As a result, closes the VТ59 transistor and opens the transistor VТ60. On its collector appears low voltage level. Control signal at the output 9 remote will not. The open collector transistor VТ46 connected through the diode VD13 with the emitter of the transistor VТ45, allows the passage through it of the signal from the resistor R95 through the transition “the base, emitter and its opening”. Thus transistor VТ47 closes on its collector there is a high level voltage to the output 6 of the control panel that corresponds to the command control word “light”.
In the word, the ending of which sounds like the word “light” or any cohesive speech with the words “light”, “color” and “sound”, at the collector of transistor VТЗЗ there is a high level voltage that passes through resistor R101 to the base of transistor VТ49, opening it, which in turn, prevents a high voltage level at the collector of transistor VТ17 memory circuits and as a consequence — the lack of high voltage level at the outputs 6, 9, 12, which would correspond to control commands of the words “light”, “color”, the “sound”. Here first appears the high level voltage at the collector of transistor VТ 17, which via a resistor R105 opens VТ51 transistor, the collector of which is connected to the collector of the transistor VТЗЗ, thereby preventing the emergence of a high-level voltage on its collector and the opening of the transistor VТ49. The high level voltage generated at the collector of transistor VТ41 upon receipt of the words “light” or “color” via a resistor R128, opens the transistor VТ64 and formed on its collector a low level voltage through a resistor R129 closes the VТ62 transistor, the collector of which is connected to the emitter of the transistor VТ61. As a result, the transistor VТ63 will open and its collector will be low voltage level. It is not possible to appear at the output 12 of the remote control signals command the words “light” or “color”. All three pronounced sequentially receives each command on its output.
The remote control used microphone “Rustle-5”. The PCB drawing of the remote control dimensions mm 180×155 shown in figure 2.
Control signals from the outputs 6, 9, 12 panel come to the inputs of switches. All the switches on the device the same, so it is enough to consider the work of one of them.
Fig. 3. A circuit diagram and a printed circuit Board switch (refer to base, collector and emitter of transistor Latin letters, C and E, respectively)
Switch (Fig. 3) allows to turn on or off various devices when applying to the input control signal.
The device operates as follows. Supply voltage +12V is supplied to the input 4 from the control panel, the first switch, from the output 5, the second switch, from the output 8, the third switch, from the output 11. Minus input 6 is connected to the first switch output 7 remote control, and the output 10 of the control — minus of the second switch 13 and the output — minus the third switch. Input 5 receives the control signal (voltage) that passes through the resistor R1 and the resistor R2, the diode VD1 to the base of transistor VT1 is open, the transistor VT2 is closed. Formed on the collector voltage charges the capacitor C1 through the resistor R9 maintains open transistor VT1, and the VT2 transistor the result remains in the closed state. Received on the input 5 the control signal of the transistors VT1 and VT2 to remember. Now, the voltage of high level from the collector of transistor VT2 will go through the resistor R7 to the base of transistor VT3, opening it, and will open the transistor VT4, which will include the relay K1. Closes its contacts, and turns on the actuator. Simultaneously, the voltage from the collector of transistor VT2 will go through the resistor R10, the capacitor C2, a resistor R14 with a delay to the base of transistor VT5, opening it, and the transistor VT6 is closed. Another control signal received on the input 5, passes through resistor R2, diode VD2 to the open collector of the transistor VT5 and the signal passes through resistors R1 and R5 to the base of transistor VT2, opening it. Through the open VT2 transistor will discharge the capacitor C1. Closes the transistors VT3 and VT4. Will turn off relay K1 and the Executive device.
The next time the flow control signal would work relay K1 closes its contacts 3, and 2 turns on the actuator. A subsequent control signal via relay K1 will turn off the actuator, Etc.
The device used relay K1 type FRS10С-03. Relay 12V: 3A/125V. Capacitors C1, C2 is electrolytic. Resistors type MLT at 0.125 W. A printed circuit Board, size 75×30 mm is depicted in figure 3.
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