CN202732419U - Voice-controlled electric fan governor for disabled person without hands - Google Patents

Abstract

The utility model discloses a voice-controlled electric fan governor for a disabled person without hands. The voice-controlled electric fan governor is characterized in that the voice-controlled electric fan governor comprises a power supply circuit, a voice-electric conversion circuit, a pulse counting decoding circuit and a drive control circuit, wherein the power supply circuit is composed of a resistive-capacitive voltage reduction device, a rectifier diode, a filter capacitor, a resistor, and a voltage stabilizing diode connected with one another; the voice-electric conversion circuit consists of a sound pickup B, a coupling capacitor, an audion, an adjustable resistor, a biasing resistor and so on; the pulse counting decoding circuit includes an integrated circuit, a resistor, a capacitor and so on; and the drive control circuit consists of an LED, a solid relay, a potentiometer, a trigger diode, a bidirectional thyristor and so on. The voice-controlled electric fan governor provided by the utility model is suitable for a disabled person without hands, and can control the start, the rotation speed or the stop of the fan through voices.

Description

The fan governor that lacks mutilated hand people Sound control

Technical field

The utility model relates to electronic equipments, is specifically related to lack the fan governor of mutilated hand people Sound control.

Background technique

At present, electric fan is mainly used Manual mechanical speed governing or remote-control speed-regulation, not yet finds to be fit to lack on the market the fan governor of mutilated hand people Sound control.。

Summary of the invention

Problem to be solved in the utility model is the fan governor how a kind of scarce mutilated hand people Sound control is provided, the fan governor that should lack mutilated hand people Sound control, Nover practical, low cost of manufacture, stable performance, can by human body sound allow starting fan, change rotating speed or out of service.

The technical problem that the utility model proposes is to solve like this, constructs a kind of fan governor of scarce mutilated hand people Sound control, it is characterized in that: comprise power circuit, acoustic-electric change-over circuit, step-by-step counting decoding circuit and Drive and Control Circuit; Power circuit is connected and composed by resistance device R12, capacitor C9, commutation diode, filter capacitor, resistor and reference diode; The acoustic-electric change-over circuit is connected and composed by pickup device B, coupling capacitance, triode, adjustable resistor RP1 and biasing resistor; The step-by-step counting decoding circuit is connected and composed by intergrated circuit A1 and A2, resistor, capacitor element; Drive and Control Circuit is comprised of devices such as LED 1, LED 2, LED 3, solid state relay K1, solid state relay K2, solid state relay K3, potentiometer RP2, potentiometer RP3, diac VD4 and bidirectional thyristor VS; Power circuit is connected on by plug on the electrical network of alternating current 220V, dropping resistor R12 with capacitor C9 parallel connection be connected and be connected current-limiting resistance R7 with commutation diode VD2 and connect, reference diode VD1 and filter capacitor C2, filter capacitor C3 are connected in parallel; Feeder ear is connected with the pin 16 of pin 4, pin 8 and the intergrated circuit A2 of intergrated circuit A1 respectively; Acoustic-electric change-over circuit pickup device B one end ground connection, the other end link to each other with adjustable resistor RP1, coupling capacitance C1, and the capacitor C1 the other end is connected with triode VT base stage, and the collector electrode of triode VT connects the pin 2 of capacitor C4 and intergrated circuit A1; The pin 3 of intergrated circuit A1 links to each other with the pin 14 of intergrated circuit A2, and the pin 2 of intergrated circuit A2, pin 6, pin 7 respectively contact resistance device R8, resistor R9, resistor R10, LED 1, LED 2, LED 3 output control signals link to each other with 1 pin of solid state relay (K1-K3); The pin 3 of solid state relay K1, solid state relay K2, solid state relay K3 links to each other with resistor R13, potentiometer RP2, potentiometer RP3 respectively, connects the control utmost point of bidirectional thyristor VS after resistor R13, the diac VD4 series connection; Be connected to after the series connection of fan electromotor M, controllable silicon VS and inductance L on the circuit of the alternating current 220V after the switch S.

The beneficial effects of the utility model are: can by human body sound allow starting fan, change rotating speed or out of service, very applicable for the handicapped people who loses both hands.

Description of drawings

Accompanying drawing 1 is circuit structure diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As shown in Figure 1, after the switch S closure, alternating current 220V voltage is through resistance-capacitance depressurization element R12, the C9 step-down, the extremely sharp pipe VD2 of rectification two and VD3 rectification, reference diode VD1 voltage stabilizing, capacitor C2, C3, after C8 filtering and the R7 current limliting, form at the R1 two ends and to stablize the 6V VDC, give on the one hand pickup device B and triode VT as operating voltage, give on the other hand intergrated circuit A1(NE555) and A2(CD4017) make work voltage, the third aspect is charged to capacitor C7 by resistor R11, charging moment adds positive voltage to the CR of the pin 15 of A2 end, make it enter reset mode, so the speed regulator circuit is ready.Without than loud noise the time, pickup device B, amplifying triode VT all are in cut-off state, and the pin 2 of A1 be high level, the single-shot trigger circuit of control A1, R5, C5 formation, and pin 3 output low levels of its A1, subsequent conditioning circuit does not all change, and electric fan does not turn round yet.When human body sends when being sent to pickup device B than loud noise, B is converted to electrical signal with sound signal, be coupled through capacitor C1 and amplify to triode VT, electrical signal after the amplification is delivered to pin 2 ends of A1 through C4, namely give trigger signal of monostable circuit, the monostable circuit upset enters temporary stable state, the pin 3 output high level of A1, send the CP end of A2 CLK clock input pin 14, make first count pulse, after the A2 internal circuit is processed, the Q1 of A2 pin 2 end output high level, by resistor R8, LED 1 is added to 1 pin of solid state relay K1,3 of control K1, conducting between 4 pin, alternating current 220V voltage is through fan electromotor M, resistor R13, bidirectional trigger diode VD4 triggers the control utmost point of bidirectional thyristor VS, the VS conducting, fan electromotor M is added in running work under the alternating current 220V voltage through inductance L; This moment, other output terminal of A2 was low level, and solid state relay K2, K3 are failure to actuate.When having that for the second time sound passes to pickup device B, A1 is triggered again upset once, the CP that delivers to A2 pin 14 from second high flat pulse of A1 pin 3 outputs holds, after the A2 count decoding is processed, and the Q2 of its pin 4 end output high level, this moment, the Q1 end of pin 2 transferred low level to by high level, other pin is output low level still, so solid state relay K2 action 3,4 conductings, triggering the loop has increased potentiometer RP2, the angle of flow of bidirectional thyristor VS reduces, and fan electromotor M running speed reduces.When having that sound passes to pickup device B for the third time, A1 is triggered upset once again, export the CP end that A2 pin 14 is delivered in the 3rd high flat pulse from 3 pin of A1, again after the A2 count decoding is processed, the Q3 end output high level of its pin 7, this moment, 4 pin Q2 end transferred low level to by high level, other pin is output low level still, so solid state relay K3 moves 3,4 conductings, trigger the loop this moment has increased potentiometer RP2 and RP3, the angle of flow of bidirectional thyristor VS reduces again, and fan electromotor M running speed reduces again; Corresponding the changing of air quantity that electric fan produces, thus realize the electric fan speed governing.When having the 4-10 time sound to be sent to pickup device B, counting decoder A2 is corresponding to one of Q4-Q0 output terminal output high level, because the Q4-Q0 output terminal all is connected with the CR end of pin 15, this process of counting decoder A2 places reset mode, this moment, the Q1-Q3 output terminal remained low level, and electric fan is in the state of shutting down.Afterwards, the work of electric fan is just turned round down by above-mentioned acoustic control principle circulation speed governing.Blanking time is exported the temporary stable state Time dependent of high level by the pin 3 of A1 in acoustic control, and by formula T=1.1 * R5 * C5 calculates, and the fan governor acoustic control of this scarce mutilated hand people Sound control is designed to 1.1 seconds blanking time.

Claims (1)

1. the fan governor of a scarce mutilated hand people Sound control is characterized in that: comprise power circuit, acoustic-electric change-over circuit, step-by-step counting decoding circuit and Drive and Control Circuit; Power circuit is connected and composed by resistance device R12, capacitor C9, commutation diode, filter capacitor, resistor and reference diode; The acoustic-electric change-over circuit is connected and composed by pickup device B, coupling capacitance, triode, adjustable resistor RP1 and biasing resistor; The step-by-step counting decoding circuit is connected and composed by intergrated circuit A1 and A2, resistor, capacitor element; Drive and Control Circuit is comprised of devices such as LED 1, LED 2, LED 3, solid state relay K1, solid state relay K2, solid state relay K3, potentiometer RP2, potentiometer RP3, diac VD4 and bidirectional thyristor VS; Power circuit is connected on by plug on the electrical network of alternating current 220V, dropping resistor R12 with capacitor C9 parallel connection be connected and be connected current-limiting resistance R7 with commutation diode VD2 and connect, reference diode VD1 and filter capacitor C2, filter capacitor C3 are connected in parallel; Feeder ear is connected with the pin 16 of pin 4, pin 8 and the intergrated circuit A2 of intergrated circuit A1 respectively; Acoustic-electric change-over circuit pickup device B one end ground connection, the other end link to each other with adjustable resistor RP1, coupling capacitance C1, and the capacitor C1 the other end is connected with triode VT base stage, and the collector electrode of triode VT connects the pin 2 of capacitor C4 and intergrated circuit A1; The pin 3 of intergrated circuit A1 links to each other with the pin 14 of intergrated circuit A2, and the pin 2 of intergrated circuit A2, pin 6, pin 7 respectively contact resistance device R8, resistor R9, resistor R10, LED 1, LED 2, LED 3 output control signals link to each other with 1 pin of solid state relay (K1-K3); The pin 3 of solid state relay K1, solid state relay K2, solid state relay K3 links to each other with resistor R13, potentiometer RP2, potentiometer RP3 respectively, connects the control utmost point of bidirectional thyristor VS after resistor R13, the diac VD4 series connection; Be connected to after the series connection of fan electromotor M, controllable silicon VS and inductance L on the circuit of the alternating current 220V after the switch S.

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