CN220753067U

CN220753067U - Intelligent voice switch

Info

Publication number: CN220753067U
Application number: CN202322421284.9U
Authority: CN
Inventors: 汪洪
Original assignee: Jiangxi Jiajie Xinyuan Science And Technology Co ltd
Current assignee: Jiangxi Jiajie Xinyuan Science And Technology Co ltd
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2024-04-09
Anticipated expiration: 2033-09-06

Abstract

The utility model provides an intelligent voice switch, which is provided with a relay switch as a work control switch of a load, wherein the relay switch realizes wireless voice control through a voice interaction management module, a power taking module is arranged to take power from a single live wire circuit, the power is taken out and stored into an energy storage module through a charge and discharge management module, and the power is taken out from the energy storage module through the charge and discharge management module, so as to provide a work power supply for the voice interaction management module, wherein the voice interaction module is provided with a pickup awakening unit and a voice interaction unit, and the charge and discharge management module is provided with a first constant current branch and a second constant current branch which are connected in parallel. The intelligent voice switch provided by the utility model can support the low-power-consumption dormancy of the voice interaction management module by the first constant-current branch when no voice interaction is required, and control the second constant-current branch to be started when the voice interaction function is awakened to control the relay switch to be opened, so that the charge and discharge power is improved, the power supply is improved, and the voice interaction and the control are effectively realized.

Description

Intelligent voice switch

Technical Field

The utility model relates to the technical field of intelligent switches, in particular to an intelligent voice switch.

Background

Along with the development of the Internet of things and the promotion of people to enjoying life, intelligent household products are widely applied to places such as families, offices and the like, wherein the intelligent switch capable of being controlled remotely can greatly improve the convenience of switch control, and is most widely used.

In the prior art, the intelligent switch mainly adopts communication modes such as Bluetooth and Zigbee for networking and interaction, the communication modes such as Bluetooth and Zigbee also need to provide a mobile control terminal, generally a remote controller and the like, and a user can carry out remote wireless control of the switch by operating the mobile control terminal, and along with the development of a voice recognition technology, the limitation of the remote controller can be eliminated through a voice recognition function, so that the wireless control convenience of the intelligent switch is further improved.

However, the power consumption of voice interaction and control is larger, the switch generally does not need to be frequently switched, the switching operation interval is long, and when no switching operation exists, the voice interaction function is in a working state for a long time, and the unnecessary energy consumption of the system is high.

Disclosure of Invention

Based on the above, the utility model aims to provide an intelligent voice switch so as to reduce the power consumption of the voice switch and provide convenience for the implementation of the voice switch.

In one aspect, the present utility model provides an intelligent voice switch comprising: the device comprises a relay switch, a power taking module, a charge and discharge management module, an energy storage module and a voice interaction management module, wherein,

the relay switch is connected in series between the live wire input end and the live wire output end;

the power taking input end of the power taking module is connected with the live wire input end and the live wire output end, and the power taking output end is connected with the input end of the charge and discharge management module;

the charge and discharge port of the charge and discharge management module is connected with the input and output port of the energy storage module, and the output end of the charge and discharge management module is connected to the power supply end of the voice interaction management module;

the voice interaction management module comprises a pickup wake-up unit and a voice interaction unit, wherein the wake-up signal output end of the pickup wake-up unit is connected to the wake-up signal input end of the voice interaction unit, and the switch control signal output end of the voice interaction unit is connected to the control signal input end of the relay switch;

the constant-current charging circuit comprises a first constant-current branch and a second constant-current branch which are connected in parallel, the first constant-current branch is a normally-on branch, and a control end of the second constant-current branch is connected to an interactive working indication signal output end of the voice interactive unit.

Optionally, the pickup wake-up unit includes pickup circuit, the wake-up circuit that connects gradually, wherein, pickup circuit's output still is connected to the speech signal input of the interactive unit of pronunciation.

Optionally, the device further comprises a key switch circuit, wherein a key switch signal output end of the key switch circuit is connected to a key wake-up signal input end of the wake-up circuit.

Optionally, the pickup wake-up unit further comprises an ambient sound listening circuit connected between the pickup circuit and the wake-up circuit.

Optionally, the pickup circuit includes two paths of output paths that are connected in parallel, and is connected with the ambient sound monitoring circuit and the voice interaction unit respectively through two paths of output paths, and each path of output path includes a resistor and a capacitor that are connected in series in turn.

Optionally, the voice interaction unit includes a voice recognition chip, a voice playing loudspeaker and a loudspeaker driving chip, wherein, the switch control signal output end and the interactive work indication signal output end are corresponding ports of the voice recognition chip, the voice recognition chip further includes a voice response signal output end, the voice response signal output end is connected to the input end of the loudspeaker driving chip, and the output end of the loudspeaker driving chip is connected with the driving end of the loudspeaker.

Optionally, the charge and discharge management module further comprises a pre-stage voltage reduction circuit, and the pre-stage voltage reduction circuit is connected between the input end of the charge and discharge management module and the input end of the constant current charging circuit;

the power taking module comprises a relay open circuit power taking unit and a relay closed circuit power taking unit, wherein a first input end and a second input end of the relay closed circuit power taking unit are respectively connected to the live wire input end and the relay switch, a first input end and a second input end of the relay open circuit power taking unit are respectively connected to the live wire input end and the live wire output end, and output ends of the relay closed circuit power taking unit and the relay open circuit power taking unit are connected in parallel to the input end of the charge and discharge management module.

Optionally, the relay open circuit power taking unit comprises a rectifying circuit and a flyback voltage reducing circuit, wherein,

the two input ends of the rectifying circuit are respectively connected to the live wire input end and the live wire output end, and the positive output end is connected to the input end of the flyback voltage reduction circuit through a protection resistor and a first inductor in sequence;

the protection resistor and the intermediate node of the first inductor are grounded through a first capacitor, and the first inductor is also connected in parallel with a second resistor.

Optionally, the charge-discharge management module further includes a voltage-reducing and stabilizing circuit, an input end of the voltage-reducing and stabilizing circuit is connected with an input and output port of the energy storage module, and an output end of the voltage-reducing and stabilizing circuit is connected to a wake-up circuit and a power supply end of the voice interaction unit.

Optionally, the charge-discharge management module further includes a post-stage voltage-reducing circuit, the post-stage voltage-reducing circuit is connected between the input/output port of the energy storage module and the voltage-reducing voltage-stabilizing circuit, and an output end of the post-stage voltage-reducing circuit is further connected to a power end of the relay switch.

The intelligent voice switch provided by the utility model is provided with the relay switch as a work control switch of a load, the relay switch realizes wireless voice control through the voice interaction management module, the electricity taking module is arranged to take electricity from a live wire, the electricity is taken out and stored into the energy storage module through the charge and discharge management module, and the electricity taking is carried out through the charge and discharge management module and stored from the energy storage module, so that a work power supply is provided for the voice interaction management module, wherein the voice interaction management module comprises a pickup awakening unit and a voice interaction unit, and the pickup awakening unit is used for controlling the voice interaction unit to awaken from a low-power-consumption dormant state when the voice interaction control requirement exists, so that the power consumption of the voice module is reduced when the voice interaction control requirement does not exist; and the charge-discharge management module is provided with a first constant current branch and a second constant current branch which are connected in parallel, the first constant current branch is a normally-on branch, the control end of the second constant current branch is connected to the interactive work indication signal output end of the voice interaction management module, so that the charge current of the energy storage module can be increased when the voice interaction management module is fully awakened to carry out remote voice control on a relay switch or a load, the charge-discharge power of the energy storage module is improved, the external power supply capacity of the charge-discharge management module is improved, the sufficient power supply of a voice interaction unit in voice interaction and control is ensured, the reliability of voice interaction control is ensured, and convenience is provided for realizing the low power consumption of the voice switch.

Drawings

Fig. 1 is a schematic diagram of a main module structure of an intelligent voice switch according to an embodiment of the present utility model;

fig. 2 is a schematic circuit diagram of a relay switch of the intelligent voice switch in an embodiment of the utility model;

fig. 3 is a schematic circuit diagram of a relay open circuit power-taking unit of an intelligent voice switch in an embodiment of the utility model;

fig. 4 is a schematic circuit diagram of a relay closed-circuit power-taking unit of the intelligent voice switch in the embodiment of the utility model;

fig. 5 is a schematic block diagram of a charge/discharge management module of an intelligent voice switch according to an embodiment of the present utility model;

fig. 6 is a schematic circuit diagram of a front stage voltage step-down circuit of a charge/discharge management module of an intelligent voice switch according to an embodiment of the present utility model;

fig. 7 is a schematic circuit diagram of a constant current charging circuit of a charge/discharge management module of an intelligent voice switch according to an embodiment of the present utility model;

fig. 8 is a schematic circuit diagram of a post-stage voltage step-down circuit of a charge-discharge management module of an intelligent voice switch according to an embodiment of the present utility model;

fig. 9 is a schematic circuit diagram of a step-down voltage stabilizing circuit of a charge/discharge management module of an intelligent voice switch in an embodiment of the utility model;

Fig. 10 is a schematic block diagram of a voice interaction management module of an intelligent voice switch according to an embodiment of the present utility model;

fig. 11 is a schematic circuit diagram of a pickup circuit of a voice interaction management module of an intelligent voice switch according to an embodiment of the present utility model;

fig. 12 is a schematic circuit diagram of a wake-up controller of a voice interaction management module of an intelligent voice switch according to an embodiment of the present utility model;

fig. 13 is a schematic circuit diagram of a key switch circuit of an intelligent voice switch according to an embodiment of the present utility model;

fig. 14 is a schematic circuit diagram of a voice interaction unit of a voice interaction management module of an intelligent voice switch in an embodiment of the utility model.

Description of main reference numerals: the power supply device comprises a load 01, a relay switch 10, a relay open circuit power taking unit 20, a relay closed circuit power taking unit 30, a charge and discharge management module 40, an energy storage module 50, a voice interaction management module 60, a key switch circuit 70, a rectifying circuit 21, a flyback voltage reducing circuit 22, a front stage voltage reducing circuit 41, a constant current charging circuit 42, a rear stage voltage reducing circuit 43, a voltage reducing and stabilizing circuit 44, a pickup circuit 61, an environmental sound monitoring circuit 62, a wake-up circuit 63 and a voice interaction unit 64.

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Based on the problem that unnecessary power consumption of voice interaction and control in the prior art is high, the utility model provides a novel intelligent voice switch, which is provided with a relay switch as a work control switch of a load, wherein the relay switch realizes wireless voice control through a voice interaction management module, a power taking module is arranged to take power from a live wire, take power to be stored into an energy storage module through a charge and discharge management module and take power stored from the energy storage module through the charge and discharge management module, and provide a working power supply for the voice interaction management module, wherein the voice interaction management module comprises a pickup wake-up unit and a voice interaction unit, and the pickup wake-up unit is used for controlling the voice interaction unit to wake up from a low-power sleep state when voice interaction control is required, so that power consumption of the voice module when no voice interaction control is required is reduced; the charging and discharging management module is provided with a first constant current branch and a second constant current branch which are connected in parallel, the first constant current branch is a normally-on branch, the control end of the second constant current branch is connected to the interactive work indication signal output end of the voice interaction management module, the voice interaction management module can wake up completely, when the relay switch and the load are subjected to remote voice control, the charging current of the energy storage module is increased based on the increase of the voice interaction to the system power consumption, the charging and discharging power of the energy storage module is improved, the external power supply capacity of the charging and discharging management module is improved, the sufficient power supply of the voice interaction unit in voice interaction and control is ensured, the reliability of voice interaction control is ensured, and the reliability of voice interaction and control is ensured while the unnecessary power consumption of voice interaction is reduced as a whole.

Referring to fig. 1, a schematic block diagram of an intelligent voice switch according to an embodiment of the utility model is shown.

In this embodiment, the power taking module includes a relay open circuit power taking unit 20 and a relay closed circuit power taking unit 30, the relay closed circuit power taking unit 30 and the relay switch 10 are sequentially connected in series between a live wire input end (Line-in) and a live wire output end (Line-out), a load 01 is connected between the live wire output end and a zero Line (Neutral), and two ends of an alternating current power taking end of the relay open circuit power taking unit 20 are respectively connected to the live wire input end and the live wire output end, so that single live wire power taking is realized.

When the relay switch 10 is in an open state, electricity is taken from the live wire through the relay open-circuit electricity taking unit 20, electric energy is taken out and supplied to the input end of the charge-discharge management module 40, and the energy storage module 50 is charged through the charge-discharge management module 40.

When the relay switch 10 is in a closed state, the input end of the live wire is directly communicated with the output end of the live wire through the relay closed circuit electricity taking unit 30 and the relay switch 10, and the two ends of the alternating current electricity taking end of the relay open circuit electricity taking unit 20 are short-circuited to stop electricity taking, at the moment, the electricity is taken from the live wire through the relay closed circuit electricity taking unit 30, the electric energy is taken out and supplied to the input end of the charge-discharge management module 40, and the energy storage module 50 is charged through the charge-discharge management module 40.

The charge and discharge management module 40 controls the charge and discharge of the energy storage module 50 to provide stable and reliable power for the voice interaction management module 60.

In this embodiment, as shown in fig. 2, the relay switch 10 includes a magnetic latching relay K1, in this embodiment, a double-coil type relay closed circuit power-taking unit 30 connected in series with a contact switch of the magnetic latching relay K1 and a live wire output terminal, a first terminal of the double-coil is connected to a power terminal (No. 5 port) of the relay switch 10, a third power supply voltage (vcc_5v0) is connected through the power terminal of the relay switch 10, and a second terminal is grounded through a first triode Q1 and a second triode Q2, respectively, and is connected to the second terminal through a third diode D3 and a fourth diode D4, respectively; the bases of the first triode Q1 and the second triode Q2 are respectively grounded through a fifteenth resistor R15 and a twenty-third resistor R23, the bases of the first triode Q1 and the second triode Q2 are respectively used for being connected with a closing working signal Relay A1 and a reset signal Relay A2, and when the closing working signal Relay A1 generates pulse with enough energy, a contact switch of the magnetic latching relay K1 can be controlled to be closed and maintained to be in a closed state; when a pulse of sufficient energy occurs in the reset signal delaya 2, the contact switch of the controllable magnetic latching relay K1 is reset to the off state and maintained in the off state.

The magnetic latching relay is adopted, the open-circuit and closed-circuit states are maintained without continuously consuming control signals, the overall power consumption of the system can be further saved, in the embodiment, the magnetic latching relay is of a double-coil type, and in practical application, a single-coil type magnetic latching relay can be selected.

In this embodiment, as shown in fig. 3, the open-circuit relay power take-off unit 20 includes a rectifying circuit 21 and a flyback step-down circuit 22, and a first input terminal and a second input terminal of the rectifying circuit 21 are connected to a live wire output terminal and a live wire input terminal, respectively, in this embodiment, further referring to fig. 4, the open-circuit relay power take-off unit 20 and a first input terminal (LIN) of the closed-circuit relay power take-off unit 30 are connected in parallel and connected to the live wire input terminal through a fuse F1.

A protection resistor FR1 and a first inductor L1 are sequentially connected in series between the positive output end of the rectifying circuit 21 and the positive input end of the flyback voltage reduction circuit 22, the middle node of the protection resistor FR1 and the first inductor L1 is grounded through a first capacitor C1, and a second resistor R2 is connected in parallel with the first inductor L1 to filter and stabilize the transmission from the positive output end of the rectifying circuit 21 to the positive input end of the flyback voltage reduction circuit 22, so that the working reliability of the flyback voltage reduction circuit 22 can be improved, and the power supply reliability can be improved.

The flyback step-down circuit 22 comprises a second controller U2 and a transformer T1, wherein one end of a primary winding of the transformer T1 is connected to the input end of the flyback step-down circuit 22, and the other end is connected to the control end (pin No. 4) of the second controller U2; the input end of the flyback voltage reduction circuit 22 is grounded through a second capacitor C2, and the output end is grounded through a seventh capacitor C7; the first end of the first secondary winding T1A is connected to the output end (12V-1, providing 12V voltage output) of the flyback voltage-reducing circuit 22 through a first diode D1, and the second end is grounded; the first end of the second secondary winding T1B is connected to the power end (pin 3) of the second controller U2 through a second diode D2 and a fourth resistor R4, and the second end is grounded; the feedback end (pin FB No. 2) of the second controller U2 is grounded through a third capacitor C3, the power supply end is grounded through a fourth capacitor C4, the current sampling end (pin No. 5) is grounded through a ninth resistor R9, and the grounding end (pin No. 1) is directly grounded; the anode to cathode of the first diode D1 are connected through the first resistor R1 and the fifth capacitor C5, and the cathode is also grounded through the first electrolytic capacitor EC 1; the first secondary winding T1A is used for outputting, the second secondary winding T1B is used for working and supplying power for the second controller U2, the first secondary winding T1A is isolated from the second end of the second secondary winding T1B through a first high-voltage ceramic capacitor CY1 and is respectively connected to different reference grounds, each part of the high-voltage side of the second controller U2 is grounded to the second secondary winding T1B side, and the ground of the output side is connected to the first secondary winding T1A side.

A third resistor R3, a sixth resistor R6 and a third precise voltage stabilizing controller U3 are sequentially connected in series between the output end of the flyback voltage stabilizing circuit 22 and the ground, a transmitting optocoupler U1A is connected between the output end of the flyback voltage stabilizing circuit 22 and the middle node of the third resistor R3 and the sixth resistor R6, a receiving optocoupler U1B and an eighth resistor R8 are sequentially connected between the power end of the second controller U2 and the ground, the middle node of the receiving optocoupler U1B and the eighth resistor R8 is connected to the feedback end (a No. 2 pin) of the second controller U2, a fifth resistor R5 and a tenth resistor R10 are sequentially connected between the output end of the flyback voltage stabilizing circuit 22 and the ground, the middle node of the fifth resistor R5 and the tenth resistor R10 is connected to the power supply end of the third precise voltage stabilizing controller U3, a seventh resistor R7 and the sixth resistor R6 are sequentially connected between the input end of the third precise voltage stabilizing controller U3, the receiving optocoupler U1B and the output end of the second controller U2 are simultaneously limited by the voltage stabilizing circuit, the first voltage stabilizing circuit and the second resistor R1B and the second resistor R1 are simultaneously limited by the voltage stabilizing controller, the voltage stabilizing controller U1 can be simultaneously limited by the voltage stabilizing controller U1 and the voltage stabilizing controller, and the voltage stabilizing controller C1 can be simultaneously limited by the voltage stabilizing circuit.

The second controller U2 is, for example, a BP2535C power management chip.

In the present embodiment, as shown in fig. 4, the relay closed-circuit power-taking unit 30 of the present embodiment includes a ninth controller U9, a first control terminal (pin No. 1) of the ninth controller U9 is grounded through a thirty-sixth resistor R36 and a thirty-ninth resistor R39, and an intermediate node of the thirty-sixth resistor R36 and the thirty-ninth resistor R39 is connected to a Gate of a third transistor Q3; the input end of the third transistor Q3 is connected to the second input end of the relay closed-circuit power-taking unit 30, and the output end is grounded; the second control terminal (pin No. 4 Gate 2) of the ninth controller U9 is grounded through a forty-seventh resistor R47 and a forty-second resistor R42, and an intermediate node of the forty-seventh resistor R47 and the forty-second resistor R42 is connected to the Gate of the fourth transistor Q4; the input end of the fourth transistor Q4 is connected to the first input end of the relay closed circuit power taking unit 30, and the output end is grounded; a two-way breakdown diode D8 is connected between the first input end and the second input end of the relay closed circuit power taking unit 30, the first input end and the second input end of the relay closed circuit power taking unit 30 are respectively connected to the output end (12V 2, providing 12V voltage output) of the relay closed circuit power taking unit 30 through a ninth diode D9 and a seventh diode D7, and a second electrolytic capacitor EC2 is connected between the output end of the relay closed circuit power taking unit 30 and the ground.

The first feedback end (pin No. 2 FB 1) of the ninth controller U9 is connected to the second input end of the relay closed circuit power taking unit 30 through a thirty-first resistor R31, is grounded through a thirty-fourth resistor R34, and a twenty-ninth capacitor C29 is connected in parallel with the thirty-fourth resistor R34; the second feedback terminal (pin 5 FB 2) of the ninth controller U9 is connected to the first input terminal of the relay closed circuit power take unit 30 through a fifty-third resistor R53, to ground through a fifty-seventh resistor R57, and the forty-fourth capacitor C44 is connected in parallel with the fifty-seventh resistor R57.

The power supply terminal (pin No. 6 VIN) of the ninth controller U9 is grounded through a thirty-seventh capacitor C37 and is connected to the first power supply voltage (vcc_a), and the reset terminal (pin No. 7 RST) is pulled up to the first power supply voltage through a thirty-seventh resistor R37. With further reference to fig. 6, after the open-circuit power taking unit 20 stops supplying power, the closed-circuit power taking unit 30 continues to supply power, and the first power supply voltage is provided by the closed-circuit power taking unit 30.

In an implementation, the ninth controller U9 may be a BP8006 power management chip.

In this embodiment, as shown in fig. 5, the charge/discharge management module 40 of the embodiment includes a front stage voltage-reducing circuit 41, a constant current charging circuit 42, a rear stage voltage-reducing circuit 43 and a voltage-reducing voltage-stabilizing circuit 44, which are sequentially connected, where the front stage voltage-reducing circuit 41 steps down the voltages provided by the relay open-circuit power-taking unit 20 and the relay closed-circuit power-taking unit 30, and provides a second power supply voltage (vdd_8v5) to the constant current charging circuit 42, charges the energy storage module 50 through the constant current charging circuit 42, the energy storage module 50 provides the energy storage voltage (vec+) to the rear stage voltage-reducing circuit 43, and provides a third power supply voltage (vcc_5v0) to the voltage-reducing voltage-stabilizing circuit 44 after the voltage is reduced by the rear stage voltage-reducing circuit 43, and provides a fourth power supply voltage (vdd_3v3) to be outputted by the voltage-reducing voltage-stabilizing circuit 44.

Wherein, the front stage step-down circuit 41 also provides a first power supply voltage (vcc_a) according to the power supply of the relay open circuit power-taking unit 20 and the relay closed circuit power-taking unit 30, and provides an operating voltage for the relay closed circuit power-taking unit 30; a third power supply voltage (vcc_5v0) is supplied to the relay switch 10 to supply the magnetic latching power to the magnetic latching relay K1; the fourth power supply voltage (vdd_3v3) is provided to the voice interaction management module 60 to provide power to the voice interaction management module 60.

Specifically, as shown in fig. 6, the front-stage voltage reduction circuit 41 of the present embodiment includes a seventh controller U7, and output terminals of the relay open-circuit power-taking unit 20 and the relay closed-circuit power-taking unit 30 are connected to a positive terminal of the third electrolytic capacitor EC3 through a fifth diode D5 and a sixth diode D6, respectively, and a first power supply voltage is provided at the positive terminal of the third electrolytic capacitor EC 3; the positive terminal of the third electrolytic capacitor EC3 is connected to the power supply terminal (pin No. 5) of the seventh controller U7, and is connected to the enable terminal (pin No. 4) of the seventh controller U7 through a twenty-sixth resistor R26, and is grounded through a twenty-second capacitor C22, and a twenty-fourth capacitor C24 is connected in parallel with the twenty-second capacitor C22; the negative end of the third electrolytic capacitor EC3 is grounded; an output terminal (pin No. 6) of the seventh controller U7 is connected to an output terminal of the preceding stage step-down circuit 41 through the second inductor L2; a twenty-seventh resistor R27 and a twenty-eighth resistor R28 are sequentially connected in series between the output end of the front-stage voltage reduction circuit 41 and the ground, the intermediate nodes of the twenty-seventh resistor R27 and the twenty-eighth resistor R28 are connected to the feedback end (pin No. 3 for monitoring the output voltage) of the seventh controller U7, and the twenty-ninth resistor R29 is connected in parallel with the twenty-eighth resistor R28; the twentieth capacitor C20 is connected in series between the output terminal of the preceding stage voltage-reducing circuit 41 and ground, and the twenty-first capacitor C21 and the twenty-third capacitor C23 are connected in parallel with the twentieth capacitor C20, respectively; the bootstrap boost terminal (pin No. 1) of the seventh controller U7 is connected to the output terminal of the seventh controller U7 through the fifteenth capacitor C15, and the ground terminal (pin No. 2) is grounded.

In this embodiment, as shown in fig. 7, the constant current charging circuit 42 of this embodiment includes a first constant current branch and a second constant current branch connected in parallel, where the first constant current branch is normally on, so that the energy storage module 50 has charging supply in a normal state, and provides standby power for each part in the sleep state of the system, and the control end of the second constant current branch is connected to the voice interaction management module 60, when the relay switch 10 is in an on state, the corresponding load works, the remote control requirement of the load is enabled, the voice interaction management module 60 is fully awakened correspondingly, the power consumption is increased, the charging power is increased at this time, the power supply to the voice interaction management module 60 is increased, and the working quality of the voice interaction management module 60 in the complete awakening is ensured.

Specifically, a forty-fourth resistor R44 and a seventh triode Q7 are sequentially connected in series between the input end and the output end of the first constant current branch, an eighth triode Q8 and a fifty-fifth resistor R55 are sequentially connected in series between the input end and the ground, a forty-ninth resistor R49 and a fifty-sixth resistor R56 are sequentially connected in series between the output end and the ground, a base electrode of the eighth triode Q8 is connected to a parallel node of the first constant current branch and the second constant current branch through the input end of the forty-fourth resistor R44, an output end of the eighth triode Q8 is connected to a base electrode of the seventh triode Q7, when the input end of the first constant current branch is connected with a second power supply voltage, current flows to the base electrode of the seventh triode Q7 through the forty-fourth resistor R44, and then flows to the base electrode through the fifty-fifth resistor R55, and the seventh triode Q7 enter a conducting state, and at this time, a charging current flows from the collector electrode of the fourth triode Q8 to the base electrode of the seventh triode Q7 through the forty-fourth resistor R44, and a fifth power supply voltage VC is supplied to the base electrode of the fifth triode Q8, and when the charging current flows to the base electrode of the eighth triode Q8 through the forty-fourth resistor R8 and the base electrode of the forty-fifth resistor R55 reaches the conducting state. When the charging current increases, the voltage across the forty-fourth resistor R44 increases, the base current of the eighth transistor Q8 increases and the emitter-to-collector current increases, and the voltage increase across the fifty-fifth resistor R55 forces the base current of the seventh transistor Q7 to decrease, and the emitter-to-collector conduction depth of the seventh transistor Q7 decreases, so that the first constant current branch charging current remains constant.

A forty-third resistor R43 and a fifth triode Q5 are sequentially connected in series between the input end and the output end of the second constant current branch, and a sixth triode Q6, a fifty-first resistor R51 and a ninth transistor Q9 are sequentially connected in series between the input end and the ground; a fifty-fourth resistor R54 and a fifty-ninth resistor R59 are sequentially connected in series between a control end (for accessing the interaction indicating signal BT_C) of the second constant current branch and ground, and an intermediate node of the fifty-fourth resistor R54 and the fifty-ninth resistor R59 is connected to a gate of the ninth transistor Q9; the base of the sixth transistor Q6 is connected to the input of the second constant current branch through a forty-third resistor R43, and the output of the sixth transistor Q6 is connected to the base of the fifth transistor Q5.

When the interworking indication signal bt_c is set to a high level, the ninth transistor Q9 is turned on, the second constant current branch is turned on, and the second constant current branch is connected in parallel to the first constant current branch and then output through the tenth diode D10, so that the output current of the constant current charging circuit 42 is increased, and the charging power is increased.

A fifth power supply voltage (vc_a) is provided at the parallel node of the first constant current branch and the second constant current branch, and the fifth power supply voltage is divided and sampled by a forty-ninth resistor R49 and a fifty-sixth resistor R56 to provide a charging voltage sampling signal bta_v output, which can be used for safety monitoring of the charging state, specifically, the charging voltage sampling signal bta_v can be provided to a controller in the voice interaction management module 60, and the recognition control is performed by using the operation processing capability of the controller in the voice interaction management module 60. Wherein the fifth supply voltage may be used for enabling control of the controller in the buck regulator circuit 44.

In this embodiment, as shown in fig. 8, the post-stage voltage reduction circuit 43 of this embodiment includes an eighth controller U8, a power supply terminal (pin No. 1) of the eighth controller U8 is connected to an input terminal of the post-stage voltage reduction circuit 43, an enable terminal (pin No. 4) is connected to a first power supply voltage through a thirty-second resistor R32, an output terminal (pin No. 6) is connected to an output terminal of the post-stage voltage reduction circuit 43 through a third inductor L3, a ground terminal (pin No. 2) is grounded, and a bootstrap voltage-boosting terminal (pin No. 1) is connected to an output terminal of the eighth controller U8 through a twenty-fifth capacitor C25; a thirty-third resistor R33 and a thirty-fifth resistor R35 are sequentially connected in series between the output terminal of the post-stage voltage-reducing circuit 43 and ground, and an intermediate node of the thirty-third resistor R33 and the thirty-fifth resistor R35 is connected to the feedback terminal (pin No. 3) of the eighth controller U8; the thirty-fourth capacitor C34 is connected between the input terminal of the post-stage voltage-reducing circuit 43 and ground, and the thirty-second capacitor C32 is connected between the power supply terminal of the eighth controller U8 and ground; the thirty-fifth capacitor C35, the thirty-third capacitor C33, the twenty-sixth capacitor C26, the twenty-seventh capacitor C27, and the twenty-eighth capacitor C28 are each connected between the output terminal of the post-stage voltage-reduction circuit 43 and ground. The input terminal of the post-stage voltage reduction circuit 43 is connected to the input/output terminal of the energy storage module 50, specifically, to the positive output terminal of the energy storage module 50 (the positive output terminal is used as a charging input terminal during charging), and provides a third supply voltage output after voltage reduction according to the energy storage voltage vec+.

In a specific implementation, the seventh controller U7 and the eighth controller U8 may be selected as JW5017S dc buck chips.

In this embodiment, as shown in fig. 9, the buck regulator circuit 44 of this embodiment includes a fifth controller U5, the power supply terminal (pin No. 1) of the fifth controller U5 is connected to the input terminal of the buck regulator circuit 44, the enable terminal (pin No. 3 CE) is connected to the intermediate node of the sixteenth resistor R16 and the nineteenth resistor R19, the output terminal (pin No. 5 VOUT) is connected to the output terminal of the buck regulator circuit 44, the low-level reference terminal (pin No. 2 VSS) is grounded, and the temperature sampling terminal (pin No. 4 NC) is floating; the sixteenth resistor R16 and the nineteenth resistor R19 divide the fifth power supply voltage and provide a step-down voltage stabilizing enable signal LDO_En to control the fifth controller U5 to perform step-down voltage stabilizing operation; an eighth capacitor C8 is connected between the output terminal of the step-down voltage stabilizing circuit 44 and ground, and a ninth capacitor C9 is connected in parallel with the eighth capacitor C8.

In this embodiment, as shown in fig. 10, the voice interaction management module 60 of this embodiment includes a sound pickup circuit 61, an environmental sound monitor circuit 62, a wake-up circuit 63 and a voice interaction unit 64, where the sound pickup circuit 61 receives environmental sound, converts the environmental sound into an electrical signal and provides the electrical signal to the environmental sound monitor circuit 62, the environmental sound monitor circuit 62 monitors the intensity of the electrical signal to obtain intensity information of the environmental sound, when the environmental sound reaches a certain intensity, the wake-up circuit 63 wakes up from a deep sleep state to recognize a wake-up keyword, and after recognizing the keyword, the voice interaction unit 64 wakes up from the deep sleep state to perform complete voice interaction, so as to control the switching of the relay switch 10. The working power consumption of the environmental sound monitoring circuit 62, the wake-up circuit 63 and the voice interaction unit 64 is sequentially increased, and the multi-stage wake-up is set, so that unnecessary power consumption of voice interaction and control can be effectively reduced.

In an alternative embodiment, the ambient sound listening circuit 62 may be selectively configured according to specific power consumption requirements, and in the case where only the sound pickup circuit 61 and the wake-up circuit 63 are configured, unnecessary power consumption of the voice interaction unit 64 may be effectively reduced.

In the present embodiment, as shown in fig. 11, a microphone chip MIC is disposed between a positive terminal (mic+1) and a negative terminal (MIC-1) of a pickup array MIC1 of a pickup circuit 61 of the present embodiment, the positive terminal of the pickup array MIC1 is connected to a microphone operating voltage (vcc_mic) through a forty-eighth resistor R48 and a fifty-th resistor R50, the negative terminal of the pickup array MIC1 is connected to a weak electric ground (s_gnd), and an intermediate node of the forty-eighth resistor R48 and the fifty-th resistor R50 is connected to the negative terminal of the pickup array MIC1 through a forty-second capacitor C42.

In this embodiment, the pickup circuit 61 is provided with two output paths, the positive end of the pickup array MIC1 is respectively output through the two output paths, a first audio signal (mic_1) and a second audio signal (mic_2) are provided, the first audio signal is used for ambient sound monitoring and detecting wake-up, the second audio signal is used for complete voice recognition of voice interaction (i.e. after the voice interaction unit 64 is wake-up, control instructions in voice information corresponding to the second audio signal are recognized in the whole course, and corresponding response control is performed according to the outputted control instructions), and the two output paths are provided, so that interference in voice interaction of the voice interaction unit 64 can be reduced, and voice recognition interaction quality is improved, wherein the two output paths respectively include a fifty second resistor R52 and a fortieth capacitor C41 which are sequentially output in series by the positive end of the pickup array MIC1, and a fifty eighth resistor R58 and a fortieth capacitor C43 which are sequentially output in series by the positive end of the pickup array MIC 1.

In this embodiment, as shown in fig. 12, the wake-up controller of the present embodiment realizes the functions of the ambient sound monitoring circuit 62 and the wake-up circuit 63 through the sixth controller U6, and based on the recognition of the wake-up keyword, the controller with a certain operation capability is needed for the recognition of the wake-up keyword, and the function of the ambient sound monitoring circuit 62 is realized through the sixth controller U6, so that the circuit layout cost can be saved. The sixth controller U6 uses the fourth power supply voltage as the working power supply.

In this embodiment, the sixth controller U6 may receive KEY wake-up signals (KEY 1, KEY2, KEY 3) to wake up hardware in addition to the first audio signal, as shown in fig. 13, where the KEY switch circuit 70 in this embodiment uses a fourth power supply voltage as a working power supply, the fourth power supply voltage is grounded through a twenty-fourth resistor R24 and a first KEY switch SW1, an intermediate node of the twenty-fourth resistor R24 and the first KEY switch SW1 is grounded through a nineteenth capacitor C19, the first KEY wake-up signal KEY1 is provided at the intermediate node of the twenty-fourth resistor R24 and the first KEY switch SW1, the first KEY wake-up signal KEY1 is pulled down to the ground potential when the first KEY switch SW1 is pushed down, and the first KEY wake-up signal KEY1 is pulled up to the fourth power supply voltage potential when the first KEY switch SW1 is sprung up, so as to realize switching between high level and low level. The present embodiment shows a key switch circuit, in a specific implementation, a plurality of key switch circuits may be set according to specific requirements, so as to provide multiple wake-up options and function options.

The CORE power interface (pin No. 14 vdd_core) of the sixth controller U6 is connected to the fourth power supply voltage through a tenth triode Q10, the input end of the thirteenth triode Q10 is connected to the control end through a twenty-fifth resistor R25, the control end of the tenth triode Q10 is grounded through an eighteenth capacitor C18, and the output end of the tenth triode Q10 is grounded through a sixteenth capacitor C16, so that the stability of the CORE power supply is ensured, and the recognition accuracy of the wake-up keyword is ensured.

The power end (pin No. 5 vdd_io) of the sixth controller U6 is connected to the fourth power supply voltage and grounded through a fourteenth capacitor C14, the second crystal oscillator Y2 is connected between the crystal oscillator input end and the crystal oscillator output end of the sixth controller U6, the thirty-first resistor R30 is connected in parallel with the second crystal oscillator Y2, and the crystal oscillator input end and the crystal oscillator output end of the sixth controller U6 are grounded through a thirty-first capacitor C30 and a thirty-first capacitor C31, respectively.

The sixth controller U6 is, for example, an EVS103 offline voice recognition chip.

In an alternative embodiment, when the ambient sound monitor circuit 62 is implemented by an additional circuit, the trigger signal provided by the ambient sound monitor circuit may be used as other KEY wake-up signals (KEY 2, KEY 3), and the wake-up signal is accessed through the other KEY wake-up signal access terminal of the sixth controller U6 to control the wake-up of the sixth controller U6.

In the present embodiment, as shown in fig. 14, the voice interaction unit 64 of the present embodiment includes a voice recognition chip U4, a voice playing speaker SPK1, and a speaker driving chip U10.

The voice recognition chip U4 is connected to the second audio signal mic_2, and is connected to the sixth controller U6 through the connector TS1 for receiving and transmitting the data signals db_tx1 and db_rx1, and for receiving the wake-up signal, and the connector TS1 is also connected to the fourth power supply voltage for providing the communication power supply (VPWR), and the voice recognition chip U4 is also provided for providing the microphone operating voltage (vcc_mic) for the sound pickup circuit 61.

In this embodiment, the voice recognition chip U4 may provide a plurality of switch control signals (relay b1, relay b2, relay c1, and relay c 2) to control the operations of the plurality of switches in addition to the closing operation signal relay a1 and the reset signal relay a2 to control the operations of the relay switch 10.

The voice recognition chip U4 is awakened, voice response can be performed in voice recognition and control, a voice signal of the response is provided to the loudspeaker driving chip U10, the loudspeaker driving chip U10 drives the voice playing loudspeaker SPK1 to perform voice response, system information such as a control result is fed back, and the loudspeaker driving chip U10 takes a third power supply voltage as a working power supply.

The voice recognition chip U4 is, for example, a YT2228 type artificial intelligence voice control chip, the speaker driving chip U10 is, for example, a BL6306 type D type audio power amplifier chip, and the specific layout of the voice interaction unit 64 can be flexibly adjusted according to specific requirements.

In this embodiment, the charge-discharge management module 40 cuts off the voltage transmission from the energy storage module 50 to the charging side through the twelfth pole tube D10, and the first supply voltage and the fifth supply voltage provided by the charging side are also used for enabling control of the operation of the post-stage step-down circuit 43 and the step-down voltage stabilizing circuit 44, where the first supply voltage and the fifth supply voltage are provided by the charging side for the energy storage module 50, and when the live wire is powered off, the first supply voltage and the fifth supply voltage return to zero, the discharging side that takes electricity from the energy storage module 50 can be controlled to stop working, so that the waste of energy storage in the energy storage module 50 is avoided, and when the power is recovered after the live wire is powered off, the system function is quickly recovered according to the residual energy storage of the energy storage module 50.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing examples illustrate only a few specific embodiments of the utility model, which are described in greater detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. An intelligent voice switch, comprising: the device comprises a relay switch, a power taking module, a charge and discharge management module, an energy storage module and a voice interaction management module, wherein,

2. The intelligent voice switch of claim 1, wherein the pickup wake-up unit comprises a pickup circuit, a wake-up circuit connected in sequence, wherein an output of the pickup circuit is further connected to a voice signal input of the voice interaction unit.

3. The intelligent speech switch according to claim 2, further comprising a key switch circuit, a key switch signal output of the key switch circuit being connected to a key wake-up signal input of the wake-up circuit.

4. The intelligent speech switch according to claim 2, wherein the pick-up wake-up unit further comprises an ambient sound listening circuit connected between the pick-up circuit and the wake-up circuit.

5. The intelligent voice switch according to claim 4, wherein the sound pick-up circuit comprises two parallel output paths, the two parallel output paths are respectively connected with the ambient sound monitoring circuit and the voice interaction unit, and each output path comprises a resistor and a capacitor which are sequentially connected in series.

6. The intelligent speech switch according to claim 1 or 2, wherein the speech interaction unit comprises a speech recognition chip, a speech playing horn and a horn driving chip, wherein the switch control signal output end and the interworking indication signal output end are corresponding ports of the speech recognition chip, the speech recognition chip further comprises a speech response signal output end, the speech response signal output end is connected to an input end of the horn driving chip, and an output end of the horn driving chip is connected to a driving end of the horn.

7. The intelligent voice switch of claim 1, wherein,

the charge and discharge management module further comprises a front-stage voltage reduction circuit, and the front-stage voltage reduction circuit is connected between the input end of the charge and discharge management module and the input end of the constant current charging circuit;

8. The intelligent voice switch according to claim 7, wherein the relay open circuit power take-off unit comprises a rectifying circuit and a flyback step-down circuit, wherein,

9. The intelligent voice switch of claim 1, wherein the charge-discharge management module further comprises a buck voltage regulator circuit, an input terminal of the buck voltage regulator circuit is connected to the input/output port of the energy storage module, and an output terminal of the buck voltage regulator circuit is connected to the wake-up circuit and a power supply terminal of the voice interaction unit.

10. The intelligent voice switch according to claim 9, wherein the charge-discharge management module further comprises a post-stage voltage-reducing circuit connected between the input-output port of the energy storage module and the voltage-reducing voltage-stabilizing circuit, and an output terminal of the post-stage voltage-reducing circuit is further connected to a power supply terminal of the relay switch.