CN202603003U - Multifunctional sound control switch - Google Patents

Abstract

The utility model discloses a multifunctional voice control switch, which is composed of a switch main circuit, a voltage stabilizing filter circuit, a voice control circuit, a shaping circuit, a trigger and a delay control circuit; the switch main circuit is composed of a bidirectional thyristor and a rectifier bridge; The two main terminals of the thyristor are respectively connected to the two output terminals of the rectifier bridge; the characteristic is that a relay is connected in series between one main terminal of the bidirectional thyristor and the corresponding output terminal of the rectifier bridge, and the normally open contact of the relay is connected with the power frequency circuit Connected in series to both ends of the AC input power supply. The utility model is an improvement on the traditional sound-activated switch, which is not only suitable for resistive light sources such as incandescent lamps, but also suitable for inductive light sources such as fluorescent lamps and energy-saving lamps. Therefore, the utility model expands the application range of the voice control switch, and provides a broader space for energy saving.

Description

A kind of multi-functional sound-activated switch

technical field

The utility model relates to a switch device, in particular to a multifunctional sound-activated switch.

Background technique

Voice-activated switch is an electronic switch that uses sound to control the circuit switch. It converts the sound into an electrical signal, amplifies and shapes it, and outputs a switch signal to control the work of various electrical appliances. It is currently widely used in corridors, corridors, balconies, The automatic time-delay devices in toilets, basements, garages and other places not only greatly facilitate users, but also save energy for users.

The traditional voice-activated switch includes a switch main circuit, a voltage stabilizing filter circuit, a voice-activated circuit, a light-controlled circuit, a shaping circuit, a trigger and a delay control circuit. After being connected in series, it is connected to the input end of the rectifier bridge, and the two main terminals of the bidirectional thyristor are respectively connected to the two output ends of the rectifier bridge to complete the automatic control of the lighting lamp. The traditional sound-activated switch has the characteristics of simple circuit and high control sensitivity. However, for the load light source, when the bidirectional thyristor is turned on, the load light source flows through a pulsed direct current, so it cannot make the ballast and electronic ballast start. , so it can only be connected to resistive light source loads, such as incandescent lamps, and cannot be used for inductive light sources, so its application is subject to certain restrictions.

Utility model content

The technical problem to be solved by the utility model is to provide a sound-activated switch capable of connecting load light sources of various properties.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:

A multi-functional voice-activated switch, which is composed of a switch main circuit, a voltage stabilizing filter circuit, a voice-activated circuit, a shaping circuit, a trigger and a delay control circuit; the switch main circuit is composed of a bidirectional thyristor and a rectifier bridge; two bidirectional thyristor VS The main terminals are respectively connected to the two output ends of the rectifier bridge; it is characterized in that: a relay is connected in series between one main terminal of the bidirectional thyristor and the corresponding output end of the rectifier bridge, and the normally open contact of the relay is connected in series with the power frequency circuit Both ends of the AC input power supply.

The beneficial effects produced by adopting the above-mentioned technical scheme are: the utility model is an improvement on the basis of the traditional sound-activated switch, and a relay is connected in series between the main terminal of the bidirectional thyristor and the output end of the rectifier bridge, and the normal function of the relay is used. Open contacts, a power frequency circuit is connected in parallel to the input end of the AC input power supply, so that the utility model is not only suitable for resistive light sources such as incandescent lamps, but also suitable for inductive light sources such as fluorescent lamps and energy-saving lamps. Therefore, the application range of the voice-activated switch is expanded, and a broader space is provided for energy saving.

Description of drawings

Fig. 1 is the circuit diagram of the utility model voice control switch;

In the figure, 2 is the power frequency circuit.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

As shown in Figure 1, it is a circuit diagram of the voice-activated switch of the present invention, which is an improvement made on the basis of the traditional voice-activated switch. The utility model multi-functional sound control switch is composed of a switch main circuit, a voltage stabilizing filter circuit, a sound control circuit, a shaping circuit, a trigger and a delay control circuit; wherein, the switch main circuit is composed of a bidirectional thyristor VS and a rectifier bridge VD1-VD4; 220V The AC input power supply and the load light source EL are connected in series to the input end of the rectifier bridge VD1-VD4, and the two main terminals T2 and T1 of the bidirectional thyristor VS are respectively connected to the two output ends of the rectifier bridge VD1-VD4 to complete the load light source Automatic control of EL. A relay K is connected in series between a main terminal T1 of the bidirectional thyristor VS and the corresponding output terminals of the rectifier bridge VD1-VD4. The normally open contact K1 of the relay is connected in series with the power frequency circuit 2 and then connected to both ends of the AC input power supply. The utility model is suitable for connecting various types of light source loads, and can adjust the power of the light source arbitrarily according to the ability of the voice control switch load.

In Figure 1, the voltage stabilizing filter circuit provides a stable DC voltage for the control circuit, which is composed of a resistor R1, a voltage stabilizing diode DW and a capacitor C1; the positive output terminals of the rectifier bridge VD1-VD4 are divided into two branches after passing through the resistor R1, One of the branches is connected to the reverse output terminal of the rectifier bridge VD1-VD4 after the parallel connection of the Zener diode DW and the capacitor C1; the sound control circuit is composed of a carbon crystal microphone head HTD, a resistor R2, a NOT gate F1 and a NAND gate F2; The HTD NAND gate F1 is connected in series between one input terminal of the NAND gate F2 and the reverse output terminal of the rectifier bridge VD1-VD4, and the resistor R2 is connected between the output terminal and the input terminal of the NOT gate F1. The positive output terminal of the rectifier bridge VD1-VD4 is connected to an input terminal of the NAND gate F2 through another branch after the resistor R1, and the other input terminal of the NAND gate F2 is connected to the reverse output terminal of the rectifier bridge VD1-VD4; The carbon crystal microphone head HTD converts the sound wave signal into a voltage signal, and the voltage signal is amplified by the NOT gate F1 and the NAND gate F2, and then coupled and output to the shaping circuit. The shaping circuit is composed of coupling capacitor C2, NOT gates F3 and F4; the output terminal of NAND gate F2 is connected to the input terminal of NOT gate F3 through coupling capacitor C2, and the output terminal of NOT gate F3 is connected to the input terminal of NOT gate F4. The shaping circuit shapes and amplifies the voltage signal output by the NAND gate F2 into a pulse signal.

In Fig. 1, the sound control switch of the present utility model also comprises the light control circuit that is made up of resistance R3 and photoresistor RD; between the output terminals. The trigger and delay control circuit is composed of NOT gates F5, F6, diode VD5, resistors R4, R5 and capacitors C3, C4; the output terminal of NOT gate F4 is connected to bidirectional thyristor VS through diode VD5, NOT gates F5, F6, and resistor R5 in turn. Gate G; resistance R4 and capacitor C3 are connected in parallel and then connected between the input terminal of NOT gate F5 and the reverse output terminal of rectifier bridge VD1-VD4; capacitor C4 is connected between the input terminal of NOT gate F6 and rectifier bridge VD1-VD4 between the inverting output terminals.

Automatic control process of the present utility model:

When the AC 220V power supply is connected, the control circuit is in a waiting state, the voltage at the input terminal of the inverter F3 is lower than its threshold level, the inverters F4 and F6 both output low levels, and the bidirectional thyristor VS is blocked because there is no trigger signal, and is blocked. The controlled load light source EL is off. Moreover, during the daytime, the resistance of the photoresistor RD is small, which will shield the signal input of the carbon crystal microphone head HTD, so that even if there is a loud sound during the day, the signal cannot continue due to the pull-down effect of the photoresistor RD Teleport, so the load light won't be on during the day. Only at night or when the light is very dark, the resistance value of the photoresistor RD becomes larger. At this time, if the carbon crystal microphone head HTD detects a sufficiently loud sound signal, it will be converted into an electrical signal, and the NOT gate F1 receives the electrical signal. Signal, output low level, NAND gate F2 outputs amplified audio signal, its signal level is coupled to the input terminal of NOT gate F3 through capacitor C2, after shaping by NOT gate F3 and F4, NAND gate F4 outputs high voltage Level, the high level controls the output of the non-gate F6 to output a high level through the shaping output of the non-gate F5, so that the bidirectional thyristor VS is turned on, and at the same time, the capacitor C3 is charged through the diode VD5; at this time, the coil of the relay K is energized, and its normally open contact Closed, the power frequency circuit 2 is connected, and the load light source EL can obtain a standard power frequency AC circuit, which can provide power to all light sources; after the sound wave passes for a period of time, the capacitor C3 discharges slowly through the resistor R4, and the discharge time constant is R4* C3, maintaining the non-gate F6 to continue to output high level, so that the bidirectional thyristor VS is turned on, so the load light source EL can be powered on for a certain period of time; then, the capacitor C3 is discharged until the voltage at both ends is lower than the threshold level of the non-gate F5 , NOT gate F5 outputs high level, NOT gate F6 outputs low level, bidirectional thyristor VS cuts off, relay coil loses power, contact disconnects, power frequency circuit 2 loses power, control circuit returns to waiting state, load light source EL Automatically turns off.

Claims (6)

1. a multi-function sound-controlled switch is made up of switch major loop, filter circuit of pressure-stabilizing, sound control circuit, shaping circuit, triggering and delay control circuit; Said switch major loop is made up of bidirectional thyristor (VS) and rectifier bridge (VD1-VD4); Two main terminals (T1, T2) of bidirectional thyristor (VS) connect two outputs of rectifier bridge (VD1-VD4) respectively; It is characterized in that: between the corresponding output end of main terminal of bidirectional thyristor (VS) and rectifier bridge (VD1-VD4), be in series with relay (K), normally opened contact of relay (K1) and the two ends that are connected on alternating current input power supplying after work frequency circuit (2) is connected.

2. a kind of multi-function sound-controlled switch according to claim 1 is characterized in that: said filter circuit of pressure-stabilizing is made up of resistance (R1), voltage stabilizing didoe (DW) and electric capacity (C1); The forward output of said rectifier bridge (VD1-VD4) is divided into two branch roads behind resistance (R1), one of them branch road connects the inverse output terminal of rectifier bridge (VD1-VD4) behind the voltage stabilizing didoe (DW) of parallel connection and electric capacity (C1).

3. a kind of multi-function sound-controlled switch according to claim 2 is characterized in that: said sound control circuit is made up of the brilliant miaow head (HTD) of carbon, resistance (R2), not gate (F1) and NAND gate (F2); Be connected on after brilliant miaow head (HTD) NAND gate of carbon (F1) series connection between the inverse output terminal of input and rectifier bridge (VD1-VD4) of NAND gate (F2); Resistance (R2) is connected between the output and input of not gate (F1); The forward output of rectifier bridge (VD1-VD4) another branch road behind resistance (R1) connects an input of NAND gate (F2), the inverse output terminal of another input termination rectifier bridge (VD1-VD4) of NAND gate (F2).

4. a kind of multi-function sound-controlled switch according to claim 3 is characterized in that: said shaping circuit is made up of coupling capacitance (C2), not gate (F3, F4); The output of said NAND gate (F2) connects the input of not gate (F3), the input of the output termination not gate (F4) of not gate (F3) through coupling capacitance (C2).

5. a kind of multi-function sound-controlled switch according to claim 4 is characterized in that: said audio-switch also comprises the light-operated circuit of being made up of resistance (R3) and photo resistance (RD); Between the inverse output terminal of resistance (R3) and input that is connected on not gate (F3) after photo resistance (RD) is parallelly connected and rectifier bridge (VD1-VD4).

6. according to claim 4 or 5 described a kind of multi-function sound-controlled switches, it is characterized in that: said triggering and delay control circuit are made up of not gate (F5, F6), diode (VD5), resistance (R4, R5) and electric capacity (C3, C4); The output of not gate (F4) connects the gate pole (G) of bidirectional thyristor (VS) successively through diode (VD5), not gate (F5), not gate (F6), resistance (R5); Between the inverse output terminal of resistance (R4) and input that is connected on not gate (F5) after electric capacity (C3) is parallelly connected and rectifier bridge (VD1-VD4); Electric capacity (C4) is connected between the inverse output terminal of input and rectifier bridge (VD1-VD4) of not gate (F6).

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