Single-live-wire intelligent switch

Abstract

The utility model, which relates to the technical field of the power switch circuit, discloses a single-live-wire intelligent switch comprising a conversion output circuit, a constant-voltage driving circuit, a DC power supply circuit, a master control communication circuit and a button circuit. The conversion output circuit is used for converting alternating current into direct current; the constant-voltage driving circuit carries out initial voltage reduction processing on direct current so as to supply power to the DC power supply circuit; the DC power supply circuit is used for carrying out secondary voltage reduction processing on direct current so as to supply power to the main control communication circuit and the key circuit; the key circuit is used for collecting a key signal and sending the key signal to the main control communication circuit; and the master control communication circuit is connected with the conversion output circuit and is used for adjusting the working state of the conversion output circuit according to the key signal so as to control the on-off state of an external electric appliance. According to the utility model, the problems of high wiring requirement of a zero-fire switch, tedious installation of a single-fire switch and stroboflash of a high-power lamp can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power switch circuits, and particularly relates to a single-phase intelligent switch. Background Art

[0002] With the development of technology, smart home products have gradually become a hot spot in the market. People's demand for smart home products is increasing day by day.

[0003] As an important part of the smart home system, the intelligent switch plays a role in controlling household lighting and other electrical equipment, and its intelligent level directly affects the user experience. Although the smart home market has developed rapidly, there are still some limitations in the existing technologies, such as high wiring requirements, cumbersome installation, stability and energy consumption problems:

[0004] High wiring requirements: Traditional zero-phase intelligent switches require re-laying the neutral wire, which is not only time-consuming and laborious, but also only applicable to new houses and not suitable for the retrofit market;

[0005] Cumbersome installation: When the single-phase intelligent switch encounters high-power lamps, a flash eliminator needs to be installed in parallel to avoid stroboscopic, which increases the complexity of construction and safety problems;

[0006] Stability problems: Changes in the load type will cause current changes, resulting in unstable operation of the switch control circuit;

[0007] In such a technical background, the innovation and development of single-phase intelligent switches are particularly important. It not only needs to solve the limitations of existing technologies, but also meet the market's requirements for intelligence, energy conservation, safety and ease of use.

[0008] Therefore, it is urgent to design a single-phase intelligent switch to solve the above problems. Summary of the Utility Model

[0009] The technical problem to be solved by the utility model is to provide a single-phase intelligent switch, which can solve the problems of high wiring requirements of zero-phase switches, cumbersome installation of single-phase switches and stroboscopic of high-power lamps.

[0010] To solve the above technical problems, the present utility model provides a single - fire intelligent switch, which includes a conversion output circuit, a constant - voltage drive circuit, a DC power - supply circuit, a main - control communication circuit and a key circuit; the conversion output circuit filters and rectifies the input alternating current to convert the alternating current into direct current; the constant - voltage drive circuit is respectively connected to the conversion output circuit and the DC power - supply circuit, and is used for initially stepping down the direct current output by the conversion output circuit to supply power to the DC power - supply circuit; the DC power - supply circuit is respectively connected to the main - control communication circuit and the key circuit, and is used for secondarily stepping down the direct current output by the constant - voltage drive circuit to supply power to the main - control communication circuit and the key circuit; the key circuit is connected to the main - control communication circuit, and is used for collecting key signals and sending the key signals to the main - control communication circuit; the main - control communication circuit is connected to the conversion output circuit, and is used for adjusting the working state of the conversion output circuit according to the key signals to control the on - off state of an external electrical appliance.

[0011] As an improvement of the above solution, the conversion output circuit includes at least one rectification circuit and at least one electrical appliance regulation circuit, and the rectification circuits and the electrical appliance regulation circuits are in one - to - one correspondence; the rectification circuit is used for filtering and rectifying the input alternating current to convert the alternating current into direct current; the electrical appliance regulation circuit is connected to an external electrical appliance, and is used for adjusting the on - off state according to the control signal of the main - control communication circuit to control the on - off state of the external electrical appliance.

[0012] As an improvement of the above solution, the rectification circuit includes a rectifier bridge, a twenty - second resistor, a third diode, a twenty - fifth resistor, a thirteenth capacitor and a thirty - first resistor; the first AC input terminal of the rectifier bridge is connected to the live - wire terminal of the power supply and grounded; the second AC input terminal of the rectifier bridge is connected to the electrical appliance regulation circuit and is sequentially connected to the main - control communication circuit through the twenty - second resistor, the third diode and the twenty - fifth resistor; the first DC output terminal of the rectifier bridge is connected to the constant - voltage drive circuit; the second DC output terminal of the rectifier bridge is grounded; one end of the thirteenth capacitor is connected to the main - control communication circuit and the other end is grounded; one end of the thirty - first resistor is connected to the main - control communication circuit and the other end is grounded.

[0013] As an improvement of the above solution, the electrical control circuit includes a power-on control module, a power supply module for supplying power to an external electrical appliance, and an eleventh optocoupler; the power-on control module includes a forty-third resistor, a forty-sixth resistor, and a fifth triode; the power supply module includes a bidirectional trigger diode, a zener diode, a rectifier diode, and a fortieth resistor; the collector of the fifth triode is connected to the negative electrode of the light-emitting diode of the eleventh optocoupler, and the positive electrode of the light-emitting diode is connected to the DC power supply circuit through the forty-third resistor; the base of the fifth triode is connected to the main control communication circuit through the forty-sixth resistor; the emitter of the fifth triode is grounded; one end of the bidirectional trigger diode is grounded, and is also connected to one end of the photoreceiver of the eleventh optocoupler through the zener diode, and is connected to the constant voltage drive circuit through the rectifier diode; the other end of the bidirectional trigger diode supplies power to the external electrical appliance, and is also connected to the other end of the photoreceiver of the eleventh optocoupler through the fortieth resistor, and is connected to the rectification circuit.

[0014] As an improvement of the above solution, the constant voltage drive circuit includes a common mode magnetic ring, a first capacitor bank, a twenty-second diode, a twenty-third diode, a twenty-fifth polarized capacitor, a ninety-ninth resistor, an eighth optocoupler, a fifty-third resistor, a third zener diode, a twenty-fourth diode, a fifty-second resistor, a twenty-seventh capacitor, a fortieth capacitor, an RC circuit, a thirtieth capacitor, a resistor bank, a fifty-sixth resistor, and a seventh drive chip; the seventh drive chip is provided with an output terminal pin, a positive electrode pin, an activation selection pin, and a chip selection pin, and the chip selection pin is grounded through the fifty-sixth resistor; the common mode magnetic ring includes a first winding and a second winding, and the second winding includes an upper winding and a lower winding; one end of the first winding is connected to the positive electrode of the twenty-second diode, and the negative electrode of the twenty-second diode is grounded through the first capacitor bank, connected to the DC power supply circuit through the twenty-third diode, connected to the conversion output circuit through the twenty-third diode and the ninety-ninth resistor, grounded through the twenty-third diode and the twenty-fifth polarized capacitor, grounded through the light-emitting diode of the eighth optocoupler, the fifty-third resistor, and the third zener diode; the other end of the first winding is grounded; one end of the upper winding is connected to one end of the fifty-second resistor through the twenty-fourth diode, and the other end of the fifty-second resistor is grounded through the twenty-seventh capacitor and the fortieth capacitor respectively, and is connected to the positive electrode pin and the collector of the triode of the eighth optocoupler respectively; the emitter of the triode of the eighth optocoupler is connected to the activation selection pin and is grounded through the RC circuit; the other end of the upper winding is grounded; one end of the lower winding is grounded through the thirtieth capacitor in sequence, and is connected to the conversion input circuit through the resistor bank; the other end of the lower winding is connected to the output terminal pin.

[0015] As an improvement of the above solution, the DC power supply circuit includes a fifth driving chip, a second induction coil, a second capacitor bank, a twentieth capacitor, a thirty-third resistor, a thirty-fourth resistor, a fifteenth capacitor, a twenty-first capacitor, a twenty-fourth resistor, and a thirty-sixth resistor; the fifth driving chip is provided with an enable pin, a feedback pin, an input voltage pin, a switch pin, and a boost control pin; the switch pin is grounded through the second induction coil and the second capacitor bank in sequence, and is connected to the main control communication circuit and the key circuit through the second induction coil, and is also connected to the boost control pin through the twentieth capacitor; the input voltage pin is connected to the constant voltage driving circuit and grounded through the fifteenth capacitor; the enable pin is grounded through the twenty-fourth resistor and the twenty-first capacitor respectively, and is connected to the constant voltage driving circuit through the thirty-sixth resistor; the feedback pin is grounded through the thirty-fourth resistor and is connected to the main control communication circuit and the key circuit through the thirty-third resistor.

[0016] As an improvement of the above solution, the main control communication circuit includes a main control chip, and the main control chip is provided with a radio frequency pin group, a power supply pin group, a key pin group, and a power connection pin group; the radio frequency pin group is connected to the electrical appliance control circuit; the power supply pin group is connected to the rectification circuit; the key pin group is connected to the key circuit; the power connection pin group is connected to the DC power supply circuit.

[0017] As an improvement of the above solution, it further includes a buzzer circuit for generating an indication signal, and the buzzer circuit includes a buzzer and a fifth resistor; one end of the buzzer is connected to the main control communication circuit through the fifth resistor, and the other end of the buzzer is grounded.

[0018] As an improvement of the above solution, the key circuit includes a first resistor, a first key, and a first capacitor; one end of the first capacitor is connected to the main control communication circuit and is connected to the DC power supply circuit through the first resistor, and the other end of the first capacitor is grounded; the first key is connected in parallel with the first capacitor.

[0019] As an improvement of the above solution, it further includes an indicator light circuit for displaying the switch state of an external electrical appliance; one end of the indicator light circuit is connected to the main control communication circuit, and the other end of the indicator light circuit is connected to the DC power supply circuit.

[0020] The beneficial effects of implementing the present utility model are as follows:

[0021] When installing the single-fire intelligent switch of the present utility model, there is no need to re-wire, and it has good compatibility and is suitable for new houses and old houses;

[0022] The utility model realizes micro-power standby and operation by converting alternating current into direct current and then reducing the high direct current voltage step by step to a control voltage, enabling the standby current of the single-fire intelligent switch to be very small when it is in the off state, thereby avoiding the stroboscopic phenomenon of high-power lamps. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the first embodiment of the single-fire intelligent switch of the utility model;

[0024] Figure 2 It is a circuit diagram of the conversion output circuit in the utility model;

[0025] Figure 3 It is a circuit diagram of the constant voltage drive circuit in the utility model;

[0026] Figure 4 It is a circuit diagram of the DC power supply circuit in the utility model;

[0027] Figure 5 It is a circuit diagram of the main control communication circuit in the utility model;

[0028] Figure 6 It is a circuit diagram of the key circuit in the utility model;

[0029] Figure 7 It is a schematic structural diagram of the second embodiment of the single-fire intelligent switch of the utility model;

[0030] Figure 8 It is a circuit diagram of the buzzer circuit in the utility model;

[0031] Figure 9 It is a circuit diagram of the indicator light circuit in the utility model. Detailed Embodiment

[0032] To make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the drawings. It is hereby declared that the orientation terms such as up, down, left, right, front, back, inside, and outside that appear or will appear in the text of the present invention are only based on the drawings of the present invention, and they do not specifically limit the present invention.

[0033] See Figure 1 , Figure 1 shows the first embodiment of the single-fire intelligent switch of the present utility model, which includes a conversion output circuit 1, a constant voltage drive circuit 2, a DC power supply circuit 3, a main control communication circuit 4, and a key circuit 5. Specifically:

[0034] The conversion output circuit 1 filters and rectifies the input alternating current to convert the alternating current into direct current;

[0035] The constant-voltage drive circuit 2 is respectively connected to the conversion output circuit 1 and the DC power supply circuit 3, and is used for initially stepping down the direct current output by the conversion output circuit 1 to supply power to the DC power supply circuit 3;

[0036] The DC power supply circuit 3 is respectively connected to the main control communication circuit 4 and the key circuit 5, and is used for secondarily stepping down the direct current output by the constant-voltage drive circuit 2 to supply power to the main control communication circuit 4 and the key circuit 5;

[0037] The key circuit 5 is connected to the main control communication circuit 4, and is used for collecting key signals and sending the key signals to the main control communication circuit 4;

[0038] The main control communication circuit 4 is connected to the conversion output circuit 1, and is used for adjusting the working state of the conversion output circuit 1 according to the key signal to control the on / off state of an external electrical appliance.

[0039] Therefore, the utility model realizes micro-power standby and operation by converting the input alternating current into direct current and then performing secondary step-down, so that the standby current of the single-fire intelligent switch in the off state is very small, thereby avoiding the stroboscopic phenomenon of high-power lamps.

[0040] The following will respectively describe in detail the conversion output circuit 1, the constant-voltage drive circuit 2, the DC power supply circuit 3, the main control communication circuit 4, and the key circuit 5:

[0041] I. Conversion output circuit 1

[0042] As Figure 2 shown, the conversion output circuit 1 includes at least one rectification circuit 11 and at least one electrical appliance regulation circuit 12, and the rectification circuit 11 corresponds to the electrical appliance regulation circuit 12 one by one; wherein, the rectification circuit 11 is used for performing filtering and rectification processing on the input alternating current to convert the alternating current into direct current; the electrical appliance regulation circuit 12 is connected to an external electrical appliance and is used for adjusting the on / off state according to the control signal of the main control communication circuit 4 to control the on / off state of the external electrical appliance.

[0043] In this embodiment, one rectification circuit 11 and one electrical appliance regulation circuit 12 are adopted. In practical applications, the rectification circuit 11 and the electrical appliance regulation circuit 12 can be appropriately increased / decreased according to the number of external electrical appliances. Among them, one external electrical appliance corresponds to one rectification circuit 11 and one electrical appliance regulation circuit 12.

[0044] Specifically, the rectification circuit 11 includes a rectifier bridge BD2, a twenty-second resistor R22, a third diode D3, a twenty-fifth resistor R25, a thirteenth capacitor C13, and a thirty-first resistor R31;

[0045] The first AC input terminal of the rectifier bridge BD2 is connected to the live wire terminal L of the power supply and grounded; preferably, the first AC input terminal of the rectifier bridge BD2 is connected to the live wire terminal L of the power supply through a fuse F2;

[0046] The second AC input terminal of the rectifier bridge BD2 is connected to the electrical control circuit 12 and is sequentially connected to the main control communication circuit 4 through a twenty-second resistor R22, a third diode D3, and a twenty-fifth resistor R25;

[0047] The first DC output terminal of the rectifier bridge BD2 is connected to the constant voltage drive circuit 2;

[0048] The second DC output terminal of the rectifier bridge BD2 is grounded;

[0049] One end of the thirteenth capacitor C13 is connected to the main control communication circuit 4, and the other end is grounded;

[0050] One end of the thirty-first resistor R31 is connected to the main control communication circuit 4, and the other end is grounded.

[0051] The model of the rectifier bridge BD2 is MB10S, but it is not limited thereto.

[0052] Correspondingly, the electrical control circuit 12 includes a power-on control module 12a, a power supply module 12b for supplying power to an external electrical appliance, and an eleventh optocoupler U11;

[0053] The power-on control module 12a includes a forty-third resistor R43, a forty-sixth resistor R46, and a fifth triode Q5;

[0054] The power supply module 12b includes a bidirectional trigger diode SR1, a zener diode ZD10, a rectifier diode D5, and a fortieth resistor R40;

[0055] The collector of the fifth triode Q5 is connected to the negative electrode of the light-emitting diode of the eleventh optocoupler U11, and the positive electrode of the light-emitting diode is connected to the DC power supply circuit 3 through the forty-third resistor R43;

[0056] The base of the fifth triode Q5 is connected to the main control communication circuit 4 through the forty-sixth resistor R46;

[0057] The emitter of the fifth triode Q5 is grounded;

[0058] One end of the bidirectional trigger diode SR1 is grounded, and is also connected to one end of the photoreceiver of the eleventh optocoupler U11 through the zener diode ZD11, and is connected to the constant voltage drive circuit 2 through the rectifier diode ZD11;

[0059] The other end of the bidirectional trigger diode SR1 supplies power to an external electrical appliance, and is also connected to the other end of the optical receiver of the eleventh optocoupler U11 through the fortieth resistor R40 and is connected to the rectification circuit 11.

[0060] Among them, the eleventh optocoupler chip U11 is a prior art, and its working principle will not be elaborated.

[0061] Therefore, the conversion output circuit 1 filters and rectifies the alternating current through the rectification circuit 11, converts the alternating current into direct current, and outputs the direct current to the constant voltage drive circuit 2; among them, the conversion output circuit 1 supplies power to and regulates the external electrical appliance through the electrical appliance regulation circuit 12. Specifically: the electrical appliance regulation circuit 12 supplies power to the external electrical appliance through the power supply module 12b, and controls the on / off state of the external electrical appliance through the power-on control module 12a connected to the main control communication circuit 4, realizing the function of the user controlling the on / off state of the external electrical appliance through the main control communication circuit 4.

[0062] II. Constant voltage drive circuit 2

[0063] As Figure 3 shown, the constant voltage drive circuit 2 includes a common mode magnetic ring T1, a first capacitor bank, a twenty-second diode D22, a twenty-third diode D23, a twenty-fifth polar capacitor C25, a ninety-ninth resistor R99, an eighth optocoupler U8, a fifty-third resistor R53, a third zener diode ZD3, a twenty-fourth diode D24, a fifty-second resistor R52, a twenty-seventh capacitor C27, a fortieth capacitor C40, an RC circuit, a thirtieth capacitor C30, a resistor bank, a fifty-sixth resistor R56, and a seventh drive chip U7;

[0064] The seventh drive chip U7 is provided with an output terminal pin DRAIN, a positive electrode pin VCC, an activation selection pin SEL, and a chip selection pin CS. The chip selection pin CS is grounded through the fifty-sixth resistor R56;

[0065] The common mode magnetic ring T1 includes a first winding and a second winding. The second winding includes an upper winding and a lower winding;

[0066] One end of the first winding is connected to the positive electrode of the twenty-second diode D22. The negative electrode of the twenty-second diode D22 is grounded through the first capacitor bank, connected to the DC power supply circuit 3 through the twenty-third diode D23, connected to the conversion output circuit 1 through the twenty-third diode D23 and the ninety-ninth resistor R99, grounded through the twenty-third diode D23 and the twenty-fifth polar capacitor C25, and grounded through the light-emitting diode of the eighth optocoupler U8, the fifty-third resistor R53, and the third zener diode ZD3;

[0067] The first capacitor bank includes a forty-first capacitor C41 and a twenty-sixth polarized capacitor C2 connected in parallel with each other;

[0068] The other end of the first winding is grounded;

[0069] One end of the upper winding is connected to one end of a fifty-second resistor R52 through the twenty-fourth diode D24. The other end of the fifty-second resistor R52 is grounded through the twenty-seventh capacitor C27 and the fortieth capacitor C40 respectively, and is connected to the positive electrode pin VCC and the collector of the triode of the eighth optocoupler U8 respectively;

[0070] The emitter of the triode of the eighth optocoupler U8 is connected to the activation selection pin SEL and is grounded through the RC circuit;

[0071] The RC circuit includes a twenty-second capacitor C22 and a sixty-seventh resistor R67 connected in parallel with each other;

[0072] The other end of the upper winding is grounded;

[0073] One end of the lower winding is grounded through the thirtieth capacitor C30 in sequence, and is connected to the conversion input circuit 1 through the resistor bank;

[0074] The resistor bank includes a fifty-seventh resistor R57 and a fifty-eighth resistor R58 connected in parallel with each other;

[0075] The other end of the lower winding is connected to the output terminal pin DRAIN.

[0076] Preferably, the common mode magnetic ring T1 is of the model W1-16-EE10, the seventh driver chip U7 is of the model BP2535C / SOT33-5A, and the eighth optocoupler U8 is of the model EL817-S1, but not limited thereto.

[0077] Therefore, through the cooperation of the common mode magnetic ring T1, the eighth optocoupler U8, the seventh driver chip U and other components, the constant voltage drive circuit 2 steps down the direct current output by the conversion output circuit 1 for the first time and outputs it to the DC power supply circuit.

[0078] III. DC power supply circuit 3

[0079] As Figure 4 shown, the DC power supply circuit 3 includes a fifth driver chip U5, a second induction coil L2, a second capacitor bank, a twentieth capacitor C20, a thirty-third resistor R33, a thirty-fourth resistor R34, a fifteenth capacitor C15, a twenty-first capacitor C21, a twenty-fourth resistor R24 and a thirty-sixth resistor R36;

[0080] The fifth driving chip U5 is provided with an enable pin EN, a feedback pin FB, an input voltage pin VIN, a switch pin SW, and a boost control pin BST;

[0081] The switch pin SW is grounded through the second induction coil L2 and the second capacitor bank in sequence, and is connected to the main control communication circuit 4 and the key circuit 5 through the second induction coil L2, and is also connected to the boost control pin BST through the twentieth capacitor C20;

[0082] The second capacitor bank includes a thirty-fourth capacitor C34, a thirty-third capacitor C33, and a fourth capacitor C4, and the thirty-fourth capacitor C34, the thirty-third capacitor C33, and the fourth capacitor C4 are connected in parallel;

[0083] The input voltage pin VIN is connected to the constant voltage driving circuit 2 and is grounded through the fifteenth capacitor C15;

[0084] The enable pin EN is grounded through the twenty-fourth resistor R24 and the twenty-first capacitor C21 respectively, and is connected to the constant voltage driving circuit 2 through the thirty-sixth resistor R36;

[0085] The feedback pin FB is grounded through the thirty-fourth resistor R34 and is connected to the main control communication circuit 4 and the key circuit 5 through the thirty-third resistor R33.

[0086] Preferably, the model of the fifth driving chip U5 is JW5018, but it is not limited thereto.

[0087] Therefore, the DC power supply circuit 3 performs secondary bucking on the direct current that is first bucked by the constant voltage driving circuit 2 through the cooperation of the fifth driving chip U5, the second induction coil L2, and other components, and then outputs the directly current after secondary bucking to the main control communication circuit 4 and the key circuit 5 to achieve weak electricity controlling strong electricity.

[0088] IV. Main control communication circuit 4

[0089] As Figure 5 shown, the main control communication circuit 4 includes a main control chip U4, and the main control chip U4 is provided with a radio frequency pin group, a power supply pin group, a key pin group, a power connection pin group, a sixty-first resistor R61, and a sixty-second resistor R62;

[0090] The radio frequency pin group is connected to the electrical appliance control circuit 12;

[0091] The power supply pin group is connected to the rectification circuit 11;

[0092] The key pin group is connected to the key circuit 5;

[0093] The power connection pin group is connected to the DC power supply circuit 3;

[0094] Specifically:

[0095] The RF pin group is connected to the electrical appliance control circuit 12 through the RF pin P4_0;

[0096] The power pin group is connected to the rectifier circuit 11 through the power pin P2_5;

[0097] The key pin group is connected to the key circuit 5 through the key pin P2_2;

[0098] The power connection pin group is connected to the DC power supply circuit 3 through the power connection pins VDDIO / VDD_BAT, the power connection pin VDD_BAT, and the power connection pin P0_3;

[0099] Among them, the power connection pin P0_3 is connected to the DC power supply circuit 3 through the sixty-second resistor R62 and is connected to the programming port through the sixty-first resistor R61.

[0100] The intelligent product logic code included in the main control chip U4, such as the specific principles of recognizing single-key clicks, outputting indicator lights, controlling high-power electricity with low-power electricity, and performing RF signal transceiver, and other necessary functions, are all existing technologies, and the principles will not be elaborated here one by one.

[0101] Preferably, the model of the main control chip U4 is MHCB05P-06 / 02, but it is not limited thereto.

[0102] Therefore, the main control communication circuit 4 receives the key signals input by the user in the key circuit 5, and the main control chip U4 controls the on / off state of the external circuit according to the key signals, realizing the control of high-power electricity with low-power electricity.

[0103] V. Key Circuit 5

[0104] As Figure 6 shown, the key circuit 5 includes a first resistor R1, a first key SW1, and a first capacitor C1;

[0105] One end of the first capacitor C1 is connected to the key pin P2_2 of the main control communication circuit 2 and is connected to the DC power supply circuit 3 through the first resistor R1, and the other end of the first capacitor C1 is grounded;

[0106] The first key SW1 is connected in parallel with the first capacitor C1.

[0107] Therefore, when the user presses the first key SW1, a key signal can be sent to the main control communication circuit 4, and the main control chip U4 can control the on / off state of the external circuit according to the key signal.

[0108] See Figure 7 , Figure 7 which shows the second embodiment of the single - fire intelligent switch of the present utility model. Different from the first embodiment shown in Figure 1 , a buzzer circuit 6 and an indicator light circuit 7 are further provided in the second embodiment.

[0109] As Figure 8 shown, the buzzer circuit 6 is used to generate an indication signal. The buzzer circuit 6 includes a buzzer SPEAKER and a fifth resistor R5;

[0110] Correspondingly, the main control chip U4 is also provided with a buzzer pin P0_4; one end of the buzzer SPEAKER is connected to the buzzer pin P0_4 through the fifth resistor R5, and the other end of the buzzer SPEAKER is grounded.

[0111] The model of the buzzer SPEAKER is HX1445, but it is not limited thereto.

[0112] As Figure 9 shown, the indicator light circuit 7 is used to display the on - off state of an external electrical appliance. One end of the indicator light circuit 7 is connected to the indicator light pin group, and the other end of the indicator light circuit 7 is connected to the DC power supply circuit 3;

[0113] In this embodiment, there are 6 indicator lights, namely LED1, LED2, LED3, LED4, LED5 and LED6. LED1, LED3 and LED5 are orange lights, and LED2, LED4 and LED6 are blue lights;

[0114] Correspondingly, the main control chip U4 is also provided with an indicator light pin group; the indicator light pin group includes a blue indicator light pin P3_2, a blue indicator light pin P3_3, a blue indicator light pin P0_0 and an orange indicator light pin P0_6;

[0115] One ends of the LED1, LED2, LED3, LED4, LED5 and LED6 are respectively connected to the DC power supply circuit 3 through an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15 and a sixteenth resistor R16;

[0116] The other ends of the LED1, LED3 and LED5 are connected to the orange indicator light pin P0_6;

[0117] The other ends of the LED2, LED4 and LED6 are respectively connected to the blue indicator light pins P3_2, P3_3 and P0_0.

[0118] As can be seen from the above, when the single-fire intelligent switch of the present utility model is installed, there is no need to rewire the circuit, and it has good compatibility and is applicable to new houses and old houses. At the same time, the present utility model converts alternating current into direct current and then further steps down the high direct current voltage to a control voltage, achieving micro-power standby and operation, so that the standby current of the single-fire intelligent switch in the off state is very small, thus avoiding the stroboscopic phenomenon of high-power lamps.

[0119] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A single-fire intelligent switch, characterized in that: It includes conversion output circuit, constant voltage drive circuit, DC power supply circuit, main control communication circuit and key circuit; The conversion output circuit performs filtering and rectification processing on the input AC power to convert the AC power into DC power; The constant voltage driving circuit is connected to the conversion output circuit and the DC power supply circuit respectively, and is used to perform initial voltage reduction processing on the direct current output by the conversion output circuit to supply power to the DC power supply circuit; The DC power supply circuit is connected to the main control communication circuit and the key circuit respectively, and is used to perform secondary voltage reduction processing on the direct current output by the constant voltage drive circuit to supply power to the main control communication circuit and the key circuit; The key circuit is connected to the main control communication circuit, and is used to collect key signals and send the key signals to the main control communication circuit; The main control communication circuit is connected to the conversion output circuit and is used to adjust the working state of the conversion output circuit according to the key signal to control the switching state of the external electrical appliance.

2. The single-fire intelligent switch according to claim 1, characterized in that: The conversion output circuit includes at least one rectifier circuit and at least one electrical appliance control circuit, and the rectifier circuit corresponds to the electrical appliance control circuit one by one; The rectifier circuit is used to filter and rectify the input AC power to convert the AC power into DC power; The electrical appliance control circuit is connected to an external electrical appliance and is used to adjust the on / off state according to the control signal of the main control communication circuit to control the on / off state of the external electrical appliance.

3. The single-fire intelligent switch according to claim 2, characterized in that: The rectifier circuit includes a rectifier bridge, a twenty-second resistor, a third diode, a twenty-fifth resistor, a thirteenth capacitor and a thirty-first resistor; The first AC input terminal of the rectifier bridge is connected to the live wire terminal of the power supply and is grounded; The second AC input end of the rectifier bridge is connected to the electrical appliance control circuit and is connected to the main control communication circuit via a twenty-second resistor, a third diode and a twenty-fifth resistor in sequence; The first DC output terminal of the rectifier bridge is connected to the constant voltage drive circuit; The second DC output terminal of the rectifier bridge is grounded; One end of the thirteenth capacitor is connected to the main control communication circuit, and the other end is grounded; One end of the thirty-first resistor is connected to the main control communication circuit, and the other end is grounded.

4. The single-fire intelligent switch according to claim 2, characterized in that: The electrical appliance control circuit includes a power-on control module, a power supply module for supplying power to an external electrical appliance, and an eleventh photoelectric coupler; The power-on control module includes a forty-third resistor, a forty-sixth resistor and a fifth transistor; The power supply module includes a bidirectional trigger diode, a voltage regulator diode, a rectifier diode and a 40th resistor; The collector of the fifth transistor is connected to the cathode of the light emitting diode of the eleventh photoelectric coupler, and the anode of the light emitting diode is connected to the DC power supply circuit through the forty-third resistor; The base of the fifth transistor is connected to the main control communication circuit through the forty-sixth resistor; The emitter of the fifth triode is grounded; One end of the bidirectional trigger diode is grounded, and is also connected to one end of the optical receiver of the eleventh photoelectric coupler through the voltage regulator diode, and is connected to the constant voltage drive circuit through the rectifier diode; The other end of the bidirectional trigger diode supplies power to the external electrical appliance, is also connected to the other end of the optical receiver of the eleventh photocoupler through the fortieth resistor, and is connected to the rectification circuit.

5. The single-fire intelligent switch according to claim 1, characterized in that: The constant voltage driving circuit includes a common mode magnetic ring, a first capacitor group, a twenty-second diode, a twenty-third diode, a twenty-fifth polarity capacitor, a ninety-ninth resistor, an eighth photoelectric coupler, a fifty-third resistor, a third voltage-stabilizing diode, a twenty-fourth diode, a fifty-second resistor, a twenty-seventh capacitor, a fortieth capacitor, an RC circuit, a thirtieth capacitor, a resistor group, a fifty-sixth resistor and a seventh driving chip; The seventh driving chip is provided with an output pin, a positive pin, an activation selection pin and a chip selection pin, and the chip selection pin is grounded through the fifty-sixth resistor; The common mode magnetic ring includes a first winding and a second winding, and the second winding includes an upper winding and a lower winding; One end of the first winding is connected to the anode of the 22nd diode, the cathode of the 22nd diode is grounded through the first capacitor group, connected to the DC power supply circuit through the 23rd diode, connected to the conversion output circuit through the 23rd diode and the 99th resistor, connected to the ground through the 23rd diode and the 25th polarity capacitor, and connected to the ground through the light emitting diode of the eighth photocoupler, the 53rd resistor and the third voltage regulator diode; The other end of the first winding is grounded; One end of the upper winding is connected to one end of the fifty-second resistor through the twenty-fourth diode, and the other end of the fifty-second resistor is grounded through the twenty-seventh capacitor and the fortieth capacitor respectively, and is connected to the positive pin and the collector of the transistor of the eighth photocoupler respectively; The emitter of the transistor of the eighth photoelectric coupler is connected to the activation selection pin and is grounded through the RC circuit; The other end of the upper winding is grounded; One end of the lower winding is grounded via the 30th capacitor in turn, and is connected to the conversion input circuit via the resistor group; The other end of the lower winding is connected to the output pin.

6. The single-fire intelligent switch according to claim 1, characterized in that: The DC power supply circuit includes a fifth driving chip, a second induction coil, a second capacitor group, a twentieth capacitor, a thirty-third resistor, a thirty-fourth resistor, a fifteenth capacitor, a twenty-first capacitor, a twenty-fourth resistor and a thirty-sixth resistor; The fifth driver chip is provided with an enable pin, a feedback pin, an input voltage pin, a switch pin and a boost control pin; The switch pin is grounded through the second induction coil and the second capacitor group in sequence, and is connected to the main control communication circuit and the key circuit through the second induction coil, and is also connected to the boost control pin through the 20th capacitor; The input voltage pin is connected to the constant voltage driving circuit and is grounded through the fifteenth capacitor; The enable pin is grounded through the twenty-fourth resistor and the twenty-first capacitor respectively, and is connected to the constant voltage drive circuit through the thirty-sixth resistor; The feedback pin is grounded through the thirty-fourth resistor, and is connected to the main control communication circuit and the key circuit through the thirty-third resistor.

7. The single-fire intelligent switch according to claim 2, characterized in that: The main control communication circuit includes a main control chip, and the main control chip is provided with a radio frequency pin group, a power pin group, a button pin group and a power connection pin group; The radio frequency pin group is connected to the electrical appliance control circuit; The power pin group is connected to the rectifier circuit; The key pin group is connected to the key circuit; The power connection pin group is connected to the DC power supply circuit.

8. The single-fire intelligent switch according to claim 1, characterized in that: Also included is a buzzer circuit for generating an indication signal, the buzzer circuit comprising a buzzer and a fifth resistor; One end of the buzzer is connected to the main control communication circuit through the fifth resistor, and the other end of the buzzer is grounded.

9. The single-fire intelligent switch according to claim 1, characterized in that: The key circuit includes a first resistor, a first key and a first capacitor; One end of the first capacitor is connected to the main control communication circuit and connected to the DC power supply circuit through the first resistor, and the other end of the first capacitor is grounded; The first button is connected in parallel with the first capacitor.

10. The single-fire intelligent switch according to claim 1, characterized in that: Also included is an indicator light circuit for displaying the switch status of the external electrical appliance; One end of the indicator light circuit is connected to the main control communication circuit, and the other end of the indicator light circuit is connected to the DC power supply circuit.

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