CN211719521U

CN211719521U - Voice-controlled mechanical switch

Info

Publication number: CN211719521U
Application number: CN201922208074.5U
Authority: CN
Inventors: 李光荣; 邓志龙; 卢盛辉; 李良良; 谭华; 黄继文
Original assignee: Nanning College for Vocational Technology
Current assignee: Nanning College for Vocational Technology
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-10-20
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses a speech control mechanical switch, it includes speech recognition module, relay control circuit and earth leakage protection circuit, wherein, the speech recognition module includes LD3320 pronunciation chip and STC11 singlechip, the LD3320 pronunciation chip is coupled with STC11 singlechip, the LD3320 pronunciation chip receives sound signal and discerns output to STC11 singlechip, STC11 singlechip output control signal to relay control module; the relay control module closes the relay according to the control signal, and the relay comprises an NPN type triode and a relay, wherein the base electrode of the NPN type triode is coupled with the output port of the voice recognition module, the collector electrode of the NPN type triode is coupled with the power supply and the signal input end of the relay respectively, the public end of the relay is coupled with a zero line, and the normally open end of the relay is coupled with a live line; and the leakage protection circuit is powered on or off according to the closing condition of the relay. The utility model discloses let the user when meetting the electric leakage, electrocute unable action, the very first time passes through voice command, and the rapid power failure reduces the loss.

Description

Voice-controlled mechanical switch

Technical Field

The embodiment of the utility model provides a relate to the switch field, particularly, relate to a voice control mechanical switch.

Background

In production and life, electricity is essential to use, a power switch is inevitably involved in electricity utilization, a general power switch controls the on and off of a power supply through a mechanical switch or an electrical appliance switch, and the power switch is required to be manually turned on and off.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the above-mentioned defect among the prior art, provide a voice control mechanical switch who realizes the physics outage through pronunciation.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

the voice control mechanical switch comprises a voice recognition module, a relay control circuit and an electric leakage protection circuit, wherein the voice recognition module comprises an LD3320 voice chip and an STC11 single chip microcomputer, the LD3320 voice chip is coupled with the STC11 single chip microcomputer, the LD3320 voice chip receives a sound signal and recognizes and outputs the sound signal to the STC11 single chip microcomputer, and the STC11 single chip microcomputer outputs a control signal to the relay control module; the relay control module comprises an NPN triode and a relay, wherein the base electrode of the NPN triode is coupled with the output port of the STC11 single chip microcomputer, the collector electrode of the NPN triode is coupled with a power supply and the signal input end of the relay respectively, the common end of the relay is coupled with a zero line, and the normally open end of the relay is coupled with a live wire; the earth leakage protection circuit includes the earth leakage protection chip, the thyristor, rectifier circuit, zero sequence current transformer, trip coil, earth leakage switch and piezo-resistor, the power input end and the rectifier circuit of earth leakage protection chip are coupled, the output is coupled with the thyristor control pole, earth leakage protection chip's input reference end and input are coupled with zero sequence current transformer, zero sequence current transformer is coupled with zero line and live wire, trip coil and piezo-resistor are coupled with rectifier circuit after establishing ties, piezo-resistor still is coupled with zero line and live wire, earth leakage switch is coupled on zero line and live wire and through tripping device and trip coil mechanical connection.

Furthermore, the utility model discloses still provide following subsidiary technical scheme:

the rectifying circuit adopts a diode bridge rectifying circuit.

The leakage protection chip adopts a DC54123 chip.

The leakage protection circuit further comprises a button coupled between the live line and the zero line.

Compared with the prior art, the utility model has the advantages that:

the LD3320 voice chip receives the sound signal and identifies and outputs the sound signal to the STC11 single chip microcomputer, the STC11 single chip microcomputer outputs high level, the NPN type triode is conducted, the relay is attracted, at the moment, the zero sequence current transformer sends a detection value to the leakage protection chip for shaping, a pulse sawtooth wave signal is output through calculation, the thyristor can be driven to be conducted, the trip coil forms a complete closed loop, the trip coil generates a magnetic field due to electrification, the trip mechanism is pulled, the leakage switch is tripped, and the circuit is broken. The utility model discloses let the user when meetting the electric leakage, electrocute unable action, the very first time passes through voice command, and the rapid power failure reduces the loss.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention and are not limiting to the present invention.

Fig. 1 is a circuit diagram of the speech recognition module of the present invention.

Fig. 2 is a circuit diagram of the relay control circuit and the earth leakage protection circuit of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the present invention, taken in conjunction with the accompanying drawings and the detailed description, is given in a non-limiting manner.

The voice control mechanical switch comprises a voice recognition module, a relay control circuit and an electric leakage protection circuit, the voice recognition module is used for recognizing voice and outputting a control signal to the relay control circuit, the relay control module closes the relay according to the control signal, and the electric leakage protection circuit is powered on and powered off according to the closing condition of the relay.

As shown in fig. 1, the voice recognition module includes an LD3320 voice chip and an STC11 single chip. The LD3320 voice chip is coupled to a microphone U2 through a first capacitor C1 and a fourth capacitor C4 for inputting sound signals. The LD3320 voice chip performs spectrum analysis through a sound signal input by a microphone, extracts voice characteristic information, matches the characteristic information with data in a set word list, and identifies and outputs a word with the highest matching degree. The STC11 singlechip adopts STC11L08XE singlechip, the P0.0-P.07 port of STC11 singlechip is coupled with the P0-P7 port of LD3320 voice chip respectively, and STC11 singlechip outputs different control signals according to the output signal of LD3320 voice chip. When the password identification method is used, the STC single chip microcomputer is programmed, in the embodiment, the identification password is set to be 'Xiaojie, the lamp is turned on/off', and a port P1.2 of the STC11 single chip microcomputer is set to be an output port.

As shown in fig. 2, the relay control circuit includes an NPN transistor Q1 and a relay, a base of the NPN transistor Q1 is coupled to the P1.2 port of the STC11 single chip microcomputer through a fifth resistor R5, and the base of the NPN transistor Q1 is further grounded through a sixth resistor R6; the collector of the NPN transistor Q1 is coupled to the power supply via a fifth diode D5 and also coupled to the signal input of the relay; the emitter of the NPN transistor Q1 is grounded. The power end of the relay is coupled with the power supply, the public end is coupled with the zero line, and the normally open end is coupled with the live line. When P1.2 of a singlechip in the voice recognition module outputs high level, the relay is attracted to work, and the circuit is equivalent to a temporary short circuit. In order to protect the relay, the working time of the relay is set to be 600ms, namely the relay returns to the low level after the high level of the relay is maintained for 600ms, and the relay is reset.

As shown in fig. 2, the leakage protection circuit includes a rectifying circuit, a trip coil L1, a thyristor SCR, a leakage protection chip, a zero sequence current transformer, a leakage switch S1, a voltage dependent resistor R3, and a button K1. The rectifying circuit is a diode bridge rectifying circuit and comprises a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first resistor R1 and a first capacitor C1, wherein the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are sequentially connected in series, one end of the first resistor R1 is coupled between the first diode D1 and the second diode D2, the other end of the first resistor R1 is coupled with one end of a first capacitor C1, and the other end of the first capacitor C1 is coupled between the third diode D3 and the fourth diode D4. The leakage protection chip adopts a DC54123 chip, a power supply end of the DC54123 chip is coupled between a first resistor R1 and a first capacitor C1, an input reference end is coupled with a zero sequence current transformer, an input end is coupled with the zero sequence current transformer through a second resistor R2, and a sixth capacitor C6 and a load resistor RL which are mutually connected in parallel are coupled between the input reference end and the input end of the DC54123 chip. The output end of the DC54123 chip is connected with the control electrode of a thyristor SCR, the anode of the thyristor SCR is coupled between the first diode D1 and the second diode D2, and the cathode of the thyristor SCR is coupled between the third diode D3 and the fourth diode D4. The tripping coil L1 has one end coupled between the first diode D1 and the third diode D3, the other end coupled with one end of the piezoresistor R3 and the live wire, the other end of the piezoresistor R3 is coupled between the second diode D2 and the fourth diode D4, and is also coupled with the zero line, the leakage switch S1 is coupled on the zero line and the live wire, and the leakage switch S1 is also mechanically connected with the tripping coil L1 through a tripping mechanism. When the output end of the DC54123 chip outputs high level, the thyristor SCR is triggered to be conducted, the trip coil L1 generates a magnetic field due to the electrification, the trip mechanism is pulled to trip the leakage switch, and the circuit is disconnected. One end of the button K1 is coupled with the zero line through a test resistor R4, the other end of the button K1 is coupled with the live line, and the button K1 and the test resistor R4 are used for detecting whether the leakage protection circuit can normally perform leakage protection work.

The utility model discloses a theory of operation is:

when the voice recognition module receives a light-off instruction sent out, the output port P1.2 outputs a high level to enable the NPN type triode Q1 to be conducted, so that the relay is attracted, the common end of the relay is connected with the end A of the zero sequence current transformer, the normally open end of the relay is connected with the end B of the zero sequence current transformer, the end A is conducted with the end B of the zero sequence current transformer, the zero sequence current transformer detects abnormal current, when the detected value reaches 30mA preset by the leakage protection switch, the current in the zero sequence current transformer is input into the DC54123 chip through the

pins

1 and 2 to be estimated and detected, when the voltage difference between the pin 1 and the pin 2 reaches the preset value of the DC54123 chip, finally the pin 7 outputs a high level, the pulse sawtooth wave signal drives the SCR control electrode, the leakage protection circuit is opened, the current returns to the zero line through the fourth diode D. The live wire outputs current, the current passes through the trip coil, the trip coil generates a magnetic field due to electrification, a piston in the tripper is pulled, magnetic energy is formed and converted into mechanical energy, the leakage switch trips, and the circuit is broken. When the circuit needs to be opened again, the circuit needs to be opened manually, and the voice part can be automatically recovered after 600 ms.

It should be noted that the above-mentioned preferred embodiments are only for illustrating the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, and the protection scope of the present invention cannot be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The voice control mechanical switch is characterized in that: comprises a voice recognition module, a relay control circuit and an electric leakage protection circuit, wherein,

the voice recognition module comprises an LD3320 voice chip and an STC11 single chip microcomputer, the LD3320 voice chip is coupled with the STC11 single chip microcomputer, the LD3320 voice chip receives a sound signal and recognizes and outputs the sound signal to the STC11 single chip microcomputer, and the STC11 single chip microcomputer outputs a control signal to the relay control module;

the relay control module comprises an NPN triode and a relay, wherein the base electrode of the NPN triode is coupled with the output port of the STC11 single chip microcomputer, the collector electrode of the NPN triode is coupled with a power supply and the signal input end of the relay respectively, the common end of the relay is coupled with a zero line, and the normally open end of the relay is coupled with a live wire;

the earth leakage protection circuit includes the earth leakage protection chip, the thyristor, rectifier circuit, zero sequence current transformer, trip coil, earth leakage switch and piezo-resistor, the power input end and the rectifier circuit of earth leakage protection chip are coupled, the output is coupled with the thyristor control pole, earth leakage protection chip's input reference end and input are coupled with zero sequence current transformer, zero sequence current transformer is coupled with zero line and live wire, trip coil and piezo-resistor are coupled with rectifier circuit after establishing ties, piezo-resistor still is coupled with zero line and live wire, earth leakage switch is coupled on zero line and live wire and through tripping device and trip coil mechanical connection.

2. The voice-controlled mechanical switch of claim 1, wherein: the rectifying circuit adopts a diode bridge rectifying circuit.

3. The voice-controlled mechanical switch of claim 1, wherein: the leakage protection chip adopts a DC54123 chip.

4. The voice-controlled mechanical switch of claim 1, wherein: the leakage protection circuit further comprises a button, and the button is coupled between the live wire and the zero line.