CN211720677U

CN211720677U - Thing networking WIFI module development circuit

Info

Publication number: CN211720677U
Application number: CN202020692269.1U
Authority: CN
Inventors: 吴大洋; 陈玲娜; 刘赢
Original assignee: Shenzhen Yipu Zhilian Technology Co Ltd
Current assignee: Shenzhen Yipu Zhilian Technology Co Ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-10-20
Anticipated expiration: 2030-04-29

Abstract

A WIFI module development circuit for the Internet of things is used for realizing networking technology development of the Internet of things and comprises a main control unit, a serial port-to-USB unit and a power supply unit which are electrically connected; the main control unit comprises a main control module, and the main control module is used for installing an operation development system and WIFI connection, so that the intelligent equipment or the cloud server exchanges data with the main control module through a WIFI protocol; the serial port-to-USB unit is externally connected with a computer tool through a USB interface so as to download a development system or a firmware program to the main control module; the main control module is provided with a communication interface, and the communication interface is used for exchanging data with the intelligent equipment; the power supply unit provides working power supply for the main control unit and the serial port-to-USB unit.

Description

Thing networking WIFI module development circuit

Technical Field

The utility model relates to a thing networking technology field, concretely relates to thing networking WIFI module development circuit.

Background

As an implementation manner of family informatization and an important application scene of the internet of things, smart homes have become an important component of social informatization development, and with rapid development of network technologies, more and more smart devices have a WIFI protocol to realize remote control, so that an internet of things networking development technology capable of simultaneously supporting the WIFI protocol and a local communication protocol is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model aims at providing a thing networking WIFI module development circuit can support the thing networking development technique of WIFI agreement and local communication agreement simultaneously.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the WIFI module development circuit for the Internet of things is used for realizing networking technology development of the Internet of things and comprises a main control unit, a serial port-to-USB unit and a power supply unit which are electrically connected; the main control unit comprises a main control module, and the main control module is used for installing an operation development system and WIFI connection, so that the intelligent equipment or the cloud server exchanges data with the main control module through a WIFI protocol; the serial port-to-USB unit is externally connected with a computer tool through a USB interface so as to download a development system or a firmware program to the main control module; the main control module is provided with a communication interface, and the communication interface is used for the main control module to exchange data with the intelligent equipment; the power supply unit provides working power supply for the main control unit and the serial port-to-USB unit.

Furthermore, the main control module is a chip set comprising a microcontroller unit, a WIFI subsystem and a power management unit.

Further, the communication interfaces comprise an SPI communication interface, an I2C communication interface, a PWM interface and a UART interface, the SPI communication interface is used for externally connecting a debugging device with the SPI interface, the I2C communication interface is used for externally connecting a debugging device with an I2C interface, and the PWM interface is used for externally connecting a debugging device with an actuating mechanism; the UART interface is used for externally connecting the intelligent equipment with a serial port.

Further, the serial-to-USB unit includes a USB-to-serial bridge controller U1, a USB interface J4, a crystal oscillator Y1, capacitors C1, C2, C3, C4, CB1, CB2, CB3, CB4, CB5, CB6, a light emitting diode D2003, bidirectional zener diodes D4, D7, D8, resistors R5, R6, R7, R10, R11, R12, R13, R14, R15, R16, and an inductor L1; the USB-to-serial bridge controller U1 is used for realizing data communication between a USB and a standard serial port, and the USB interface J4 is used for connecting a computer tool;

the pin 2 and the pin 3 of the USB-to-serial bridge controller U1 are respectively connected with terminals, the pin 4 of the USB-to-serial bridge controller U1 is respectively connected with one end of the capacitor CB1 and the power supply 3.3V, the other end of the capacitor CB1 is grounded, the pin 5 of the USB-to-serial bridge controller U1 is connected with one end of the resistor R10, the pin 6 of the USB-to-serial bridge controller U1 is connected with one end of the resistor R11, the pin 7 of the USB-to-serial bridge controller U1 is grounded, the pin 8 of the USB-to-serial bridge controller U1 is respectively connected with one end of the capacitor CB4 and the power supply 3.3V, the pin 9 of the USB-to-serial bridge controller U1 is connected with one end of the resistor R12, the pin 10 of the USB-to-serial bridge controller U1 is connected with one end of the resistor R13, the pin 11 of the USB-to-serial bridge controller U1 is connected with one end of the resistor R14, a pin 13 of the USB-to-serial bridge controller U1 is connected to one end of the resistor R16, a pin 14 of the USB-to-serial bridge controller U1 is connected to one end of the resistor R15, the other end of the resistor R14, the other end of the resistor R13, the other end of the resistor R12, the other end of the resistor R11, the other end of the resistor R10, the other end of the resistor R15 and the other end of the resistor R16 are connected to a rear power supply of 3.3V, a pin 15 of the USB-to-serial bridge controller U1 is connected to one end of the resistor R6, the other end of the resistor R6 is connected to one end of the resistor R7, one end of the bidirectional zener diode D8 and a pin 3 of the USB interface J4, a pin 16 of the USB-to-serial bridge controller U1 is connected to one end of the resistor R5, and the other end of the resistor 539r 5 is connected to one end of the bidirectional zener diode D7 and a pin of the USB interface J4, the other end of the bidirectional zener diode D7 is grounded, the other end of the resistor R7 is connected to the power supply 3.3V, the other end of the bidirectional zener diode D8 is grounded, the pin 17 of the USB to serial bridge controller U1 is connected to the pin 19 and then is connected to one end of the capacitor CB5 and one end of the capacitor C3, one end of the capacitor C3 is further connected to the power supply 3.3V, the other end of the capacitor CB5 is grounded, the other end of the capacitor C3 is grounded, the pin 18 of the USB to serial bridge controller U1 is grounded, the pin 20 of the USB to serial bridge controller U1 is connected to the power supply 5V and one end of the capacitor CB3, the other end of the capacitor CB3 is grounded, the pin 21, the pin 22, the pin 23, the pin 25 and the pin 26 of the USB to serial bridge controller U1 are connected to the ground, the pin 27 of the USB to serial bridge controller U1 is connected to one end of the crystal Y1 and one end of the capacitor C2, a pin 28 of the USB-to-serial bridge controller U1 is connected to the other end of the crystal oscillator Y1 and one end of the capacitor C1, respectively, the other end of the capacitor C1 is connected to the other end of the capacitor C2 and then grounded, a pin 1 of the USB interface J4 is grounded, a pin 6, a pin 7, and a pin 8 of the USB interface J4 are connected to the ground, a pin 9, a pin 10, and a pin 11 of the USB interface J4 are connected to the ground, a pin 5 of the USB interface J4 is connected to one end of the bidirectional zener diode D4 and one end of the inductor L1, respectively, the other end of the inductor L1 is connected to one segment of the capacitor C4 and one end of the capacitor CB6, one end of the capacitor C4 is further connected to a power supply 5V, the other end of the capacitor C4 is grounded, the other end of the capacitor CB6 is grounded, one end of the capacitor CB6 is further connected to the anode of the light emitting diode, the cathode of the light emitting diode D2003 is connected with one end of the resistor R2005, and the other end of the resistor R2005 is grounded.

Further, the power supply unit comprises a 5V power supply circuit, a 3.3V power supply circuit and a power consumption current measuring circuit; the 5V power supply circuit is used for accessing a 5V direct-current power supply, the 3.3V power supply circuit is used for providing a 3.3V working power supply for the main control unit and the serial port-to-USB unit, and the power consumption current measuring circuit is used for measuring the whole power consumption current of the Internet of things WIFI module development circuit.

Further, the 5V power supply circuit includes a light emitting diode D2002, capacitors C2002, C2003, C2004, C2005, a resistor R2004, and socket interfaces J2010, J2011, J2018;

one end of the socket interface J2010 and one end of the capacitor C2003 are connected to each other and then connected to a 5V power supply terminal, one end of the socket interface J2010 is connected to the other end of the socket interface J2010 and then connected to one end of the capacitor C2002, one end of the socket interface J2018 is connected to the other end of the socket interface J2018, and then connected to the other end of the capacitor C2002 and the other end of the capacitor C2003, and then grounded, the anode of the light emitting diode D2002 is connected with a 5V power supply terminal, the cathode of the light emitting diode D2002 is connected with one end of the resistor R2004, the other end of the resistor R2004 is grounded, one end of the socket interface J2011 is connected to the circuit voltage 5V and one end of the capacitor C2004, the other end of the socket interface J2011 is respectively connected with a 5V power supply terminal and one end of the capacitor C2005, one end of the capacitor C2005 and one end of the capacitor C2004 are connected and then grounded.

Further, the 3.3V power supply circuit converts a direct current voltage of 5V into a direct current voltage of 3.3V, so as to provide a 3.3V working power supply for the main control unit and the serial port-to-USB unit; the 3.3V power supply circuit comprises a voltage stabilizer U101, polar capacitors C2007, C2012, C2008 and C2001, a socket interface J2012, an inductor L100, and resistors R100, R101, R2011 and R2010;

pin 1 of regulator U101 is connected to one end of resistor R100 and one end of socket interface J2012, one end of socket interface J2012 is connected to the 5V power terminal and the positive pole of polar capacitor C2007, the negative pole of polar capacitor C2007 is grounded, pin 6 of regulator U101 is connected to one end of resistor R2009 and the other end of socket interface J2012, the other end of resistor R2009 is connected to two ground wires, pin 5 of regulator U101 is connected to the other end of resistor R100 and one end of resistor R101, the other end of resistor R101 is grounded, pin 9 of regulator U101 is connected to pin 7 and then grounded, pin 8 of regulator U101 is connected to one end of inductor L100, pin 3 of regulator U101 is connected to the other end of inductor L100 and one end of resistor R2011, one end of resistor R2011 is connected to the positive pole, negative pole, and positive pole of polar capacitor C2012, and resistor R2011 respectively, The positive electrode of the polar capacitor C2008 and the positive electrode of the polar capacitor C2001, the positive electrode of the polar capacitor C2001 is further connected to a direct-current voltage 3.3V terminal, the direct-current voltage 3.3V terminal is used for outputting direct-current voltage 3.3V, the negative electrode of the polar capacitor C2012 is grounded, the negative electrode of the polar capacitor C2008 is grounded, the negative electrode of the polar capacitor C2001 is grounded, a pin 4 of the voltage stabilizer U101 is respectively connected to the other end of the resistor R2011 and one end of the resistor R2010, and the other end of the resistor R2010 is grounded.

Further, the power consumption current measuring circuit comprises a socket interface J2004, a polar capacitor C2013, a light emitting diode D2001, and resistors R2003 and R2012; the direct-current voltage 3.3V terminal is respectively connected to one end of the resistor R2012, one end of the socket interface J2004 and the anode of the light emitting diode D2001, the cathode of the light emitting diode D2001 is connected to one end of the resistor R2003, the other end of the resistor R2003 is grounded, the other end of the resistor R2012 is connected to the other end of the socket interface J2004 and then is respectively connected to the anode of the polar capacitor C2013, the power supply 3.3V and the voltage data terminal, the voltage data terminal is used for connecting an ammeter to measure current, and the cathode of the polar capacitor C2013 is grounded.

Furthermore, the main control unit further comprises a socket interface connected with the communication interface, so that the communication interface is connected with an external device through the socket interface.

Furthermore, the intelligent device comprises an intelligent gateway and intelligent household equipment.

Compared with the prior art, the utility model has the advantages that the development circuit of the WIFI module of the internet of things comprises a main control unit, a serial port-to-USB unit and a power supply unit which are electrically connected; the main control unit comprises a main control module, and the main control module is used for installing an operation development system and WIFI connection, so that the intelligent equipment or the cloud server exchanges data with the main control module through a WIFI protocol; the serial port-to-USB unit is externally connected with a computer tool through a USB interface so as to download a development system or a firmware program to the main control module; the main control module is provided with a communication interface, and the communication interface is used for exchanging data with the intelligent equipment; the power supply unit provides working power supply for the main control unit and the serial port-to-USB unit; the utility model discloses a main control unit has the function of WIFI agreement and local communication agreement to can support the thing networking development of networking of WIFI agreement and local communication agreement simultaneously.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the embodiment of the utility model provides a main control unit schematic diagram of thing networking WIFI module development circuit.

Fig. 2 is the embodiment of the utility model provides a serial ports of thing networking WIFI module development circuit changes USB unit schematic diagram.

Fig. 3 is the embodiment of the utility model provides a power supply unit schematic diagram of thing networking WIFI module development circuit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 3, the preferred embodiment of the present invention is provided.

The development circuit for the WIFI module of the internet of things is used for realizing networking technology development of the internet of things and comprises a main control unit, a serial port-to-USB unit and a power supply unit which are electrically connected; the main control unit comprises a main control module M1, and the main control module M1 is used for installing, running and developing a system and connecting WIFI, so that the intelligent equipment or the cloud server exchanges data with the main control module M1 through a WIFI protocol; the serial port-to-USB unit is externally connected with a computer tool through a USB interface so as to download a development system or a firmware program to the main control module M1; the master control module M1 is provided with a communication interface, and the communication interface is used for the master control module M1 to exchange data with the intelligent equipment; the power supply unit provides working power supply for the main control unit and the serial port-to-USB unit.

The Internet of things WIFI module development circuit provided by the technical scheme comprises a main control unit, a serial port-to-USB unit and a power supply unit which are electrically connected; the main control unit comprises a main control module M1, and the main control module M1 is used for installing, running and developing a system and connecting WIFI, so that the intelligent equipment or the cloud server exchanges data with the main control module M1 through a WIFI protocol; the serial port-to-USB unit is externally connected with a computer tool through a USB interface so as to download a development system or a firmware program to the main control module M1; the master control module M1 is provided with a communication interface, and the communication interface is used for the master control module M1 to exchange data with the intelligent equipment; the power supply unit provides working power supply for the main control unit and the serial port-to-USB unit; the main control unit has the functions of a WIFI protocol and a local communication protocol, so that the networking development technology of the Internet of things of the WIFI protocol and the local communication protocol can be simultaneously supported.

As an embodiment of the present invention, the main control module M1 is a chipset including a microcontroller unit, a WIFI subsystem and a power management unit.

Preferably, the model of the master control module M1 is MT 7682.

As an implementation manner of the present invention, the communication interface includes an SPI communication interface, an I2C communication interface, a PWM interface and a UART interface, the SPI communication interface is used for externally connecting a debugging device having an SPI interface, the I2C communication interface is used for externally connecting a debugging device having an I2C interface, and the PWM interface is used for externally connecting a debugging device having an actuator; the UART interface is used for externally connecting intelligent equipment with a serial port.

Preferably, the main control unit further comprises a socket interface connected to the communication interface, so that the communication interface is connected to the external device through the socket interface.

Specifically, referring to fig. 1, the master control unit includes a master control module M1, socket interfaces J2009, J2017, J2123, J2122, J2113, J2112, J2111, J2110, J2121, J2120, J2119, J2118, J2116, J2115; pin 1 of the master control module M1 is connected with a power supply of 3.3V, and pin 2 of the master control module M1 is connected with a chip enable end;

pin 3, pin 4, pin 5, and pin 6 of the main control module M1 are SPI communication interfaces, where pin 3 is a clock interface connection socket interface J2120, pin 4 is a bus output interface connection socket interface J2118, pin 5 is a bus input interface connection socket interface J2119, and pin 6 is a chip select signal interface connection socket interface J2121; pin 4 and pin 5 of the master control module M1 can also be used as an I2C communication interface;

a pin 17, a pin 16 and a pin 10 of the main control module M1 are PWM interfaces, wherein the pin 17 is connected to the socket interface J2110, the pin 16 is connected to the socket interface J2111, and the pin 10 is connected to the socket interface J2116; the pin 17, the pin 16, and the pin 10 may also serve as a UART interface for connecting a device having a UART interface.

As an embodiment of the present invention, referring to fig. 2, the serial-to-USB unit includes a USB to serial bridge controller U1, a USB interface J4, a crystal oscillator Y1, capacitors C1, C2, C3, C4, CB1, CB2, CB3, CB4, CB5, CB6, a light emitting diode D2003, bidirectional zener diodes D4, D7, D8, resistors R5, R6, R7, R10, R11, R12, R13, R14, R15, R16, and an inductor L1; the USB-to-serial bridge controller U1 is used for realizing data communication between a USB and a standard serial port, and the USB interface J4 is used for connecting a computer tool;

pin 2 and pin 3 of USB to serial bridge controller U1 are connected to terminals, pin 4 of USB to serial bridge controller U1 is connected to one end of capacitor CB1 and 3.3V of power supply, the other end of capacitor CB1 is connected to ground, pin 5 of USB to serial bridge controller U1 is connected to one end of resistor R10, pin 6 of USB to serial bridge controller U1 is connected to one end of resistor R11, pin 7 of USB to serial bridge controller U1 is connected to ground, pin 8 of USB to serial bridge controller U1 is connected to one end of capacitor CB4 and 3.3V of power supply, pin 9 of USB to serial bridge controller U1 is connected to one end of resistor R12, pin 10 of USB to serial bridge controller U1 is connected to one end of resistor R13, pin 11 of USB to serial bridge controller U1 is connected to one end of resistor R14, pin 13 of USB to serial bridge controller U1 is connected to one end of R16, and pin 49314 of USB to one end of serial controller U1 is connected to resistor R15 8, the other end of the resistor R14, the other end of the resistor R13, the other end of the resistor R12, the other end of the resistor R11, the other end of the resistor R10, the other end of the resistor R15 and the other end of the resistor R16 are connected with a power supply of 3.3V, a pin 15 of the USB-to-serial bridge controller U1 is connected with one end of a resistor R6, the other end of a resistor R6 is connected with one end of a resistor R7, one end of a bidirectional voltage stabilizing diode D8 and a pin 3 of a USB interface J4, a pin 16 of the USB-to-serial bridge controller U1 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with one end of a bidirectional voltage stabilizing diode D7 and a pin 4 of a USB interface J4, the other end of the bidirectional voltage stabilizing diode D7 is grounded, the other end of the resistor R9 is connected with the power supply of 3.3V, the other end of the bidirectional voltage stabilizing diode D8 is grounded, a pin 17 of the USB-to-, one end of a capacitor C3 is also connected with a power supply 3.3V, the other end of a capacitor CB5 is grounded, the other end of a capacitor C3 is grounded, a pin 18 of a USB-to-serial bridge controller U1 is grounded, a pin 20 of a USB-to-serial bridge controller U1 is respectively connected with one ends of a power supply 5V and a capacitor CB3, the other end of a capacitor CB3 is grounded, a pin 21, a pin 22, a pin 23, a pin 25 and a pin 26 of the USB-to-serial bridge controller U1 are connected and then grounded, a pin 27 of the USB-to-serial bridge controller U1 is respectively connected with one end of a crystal oscillator Y1 and one end of a capacitor C2, a pin 28 of the USB-to-serial bridge controller U1 is respectively connected with the other end of a crystal oscillator Y1 and one end of a capacitor C1, the other end of a capacitor C1 is connected and then grounded, a pin 1 of a USB interface J4 is grounded, a pin 6, a pin 7 and a pin 8 of a USB interface J4 are, The pin 10 and the pin 11 are connected and then grounded, the pin 5 of the USB interface J4 is connected to one end of a bidirectional zener diode D4 and one end of an inductor L1, the other end of the inductor L1 is connected to one end of a capacitor C4 and one end of a capacitor CB6, one end of a capacitor C4 is further connected to the power supply 5V, the other end of the capacitor C4 is grounded, the other end of the capacitor CB6 is grounded, one end of a capacitor CB6 is further connected to the anode of the light emitting diode D2003, the cathode of the light emitting diode D2003 is connected to one end of a resistor R2005, and the other end of the resistor R2005 is grounded.

As an embodiment of the present invention, the power supply unit includes a 5V power supply circuit, a 3.3V power supply circuit, and a power consumption current measurement circuit; the 5V power supply circuit is used for accessing a 5V direct-current power supply, the 3.3V power supply circuit is used for providing a 3.3V working power supply for the main control unit and the serial port-USB unit, and the power consumption current measuring circuit is used for measuring the whole power consumption current of the Internet of things WIFI module development circuit.

Specifically, referring to fig. 3, the 5V power supply circuit includes a light emitting diode D2002, capacitors C2002, C2003, C2004, C2005, a resistor R2004, and socket interfaces J2010, J2011, J2018;

one end of the socket interface J2010 is connected with one end of the capacitor C2003 and then connected with a 5V power supply terminal, one end of the socket interface J2010 is further connected with the other end of the socket interface J2010 and then connected with one end of the capacitor C2002, one end of the socket interface J2018 is connected with the other end of the socket interface J2018 and then connected with the other end of the capacitor C2002 and then grounded, the anode of the light emitting diode D2002 is connected with the 5V power supply terminal, the cathode of the light emitting diode D2002 is connected with one end of the resistor R2004, the other end of the resistor R2004 is grounded, one end of the socket interface J2011 is respectively connected with the circuit voltage 5V and one end of the capacitor C2004, the other end of the socket interface J2011 is respectively connected with the 5V power supply terminal and one end of the capacitor C2005, and one end of the capacitor.

Specifically, referring to fig. 3, the 3.3V power supply circuit converts a direct current voltage of 5V into a direct current voltage of 3.3V to provide a 3.3V working power supply for the main control unit and the serial port-to-USB unit; the 3.3V power supply circuit comprises a voltage stabilizer U101, polar capacitors C2007, C2012, C2008 and C2001, a socket interface J2012, an inductor L100, resistors R100, R101, R2011 and R2010;

pin 1 of regulator U101 is connected to one end of resistor R100 and one end of socket interface J2012, one end of socket interface J2012 is further connected to 5V power terminal and positive electrode of polar capacitor C2007, negative electrode of polar capacitor C2007 is grounded, pin 6 of regulator U101 is connected to one end of resistor R2009 and the other end of socket interface J2012, the other end of resistor R2009 is connected to two ground wires, pin 5 of regulator U101 is connected to the other end of resistor R100 and one end of resistor R101, the other end of resistor R101 is grounded, pin 9 of regulator U101 is connected to pin 7 and then grounded, pin 8 of regulator U101 is connected to one end of inductor L100, pin 3 of regulator U101 is connected to the other end of inductor L100 and one end of resistor R2011, one end of resistor R2011 is further connected to positive electrode of polar capacitor C2012, positive electrode of polar capacitor C2008 and positive electrode of polar capacitor C2001, positive electrode of polar capacitor C2001 is further connected to dc voltage 3.3V terminal, the direct-current voltage 3.3V terminal is used for outputting direct-current voltage 3.3V, the negative pole of polarity electric capacity C2012 is grounded, the negative pole of polarity electric capacity C2008 is grounded, the negative pole of polarity electric capacity C2001 is grounded, pin 4 of stabiliser U101 is connected with the other end of resistance R2011 and the one end of resistance R2010 respectively, and the other end of resistance R2010 is grounded.

Specifically, referring to fig. 3, the power consumption current measurement circuit includes a socket interface J2004, a polarity capacitor C2013, a light emitting diode D2001, and resistors R2003, R2012; the direct-current voltage 3.3V terminal is respectively connected with one end of a resistor R2012, one end of a socket interface J2004 and the anode of a light-emitting diode D2001, the cathode of the light-emitting diode D2001 is connected with one end of a resistor R2003, the other end of the resistor R2003 is grounded, the other end of the resistor R2012 is connected with the other end of the socket interface J2004 and then is respectively connected with the anode of a polar capacitor C2013, a power supply 3.3V and a voltage data terminal, the voltage data terminal is used for being connected with an ammeter to measure current, and the cathode of the polar capacitor C2013 is grounded.

As an embodiment of the utility model, the smart machine includes intelligent gateway and intelligent household equipment.

The embodiments of the present invention have been described in detail, but the invention is not limited to the embodiments, and those skilled in the art can make many equivalent modifications or substitutions without departing from the spirit of the present invention, and the equivalent modifications or substitutions are included in the scope of protection defined by the claims of the present application.

Claims

1. The WIFI module development circuit for the Internet of things is used for realizing networking technology development of the Internet of things and comprises a main control unit, a serial port-to-USB unit and a power supply unit which are electrically connected; the main control unit comprises a main control module, and the main control module is used for installing an operation development system and WIFI connection, so that the intelligent equipment or the cloud server exchanges data with the main control module through a WIFI protocol; the serial port-to-USB unit is externally connected with a computer tool through a USB interface so as to download a development system or a firmware program to the main control module; the main control module is provided with a communication interface, and the communication interface is used for the main control module to exchange data with the intelligent equipment; the power supply unit provides working power supply for the main control unit and the serial port-to-USB unit.

2. The Internet of things WIFI module development circuit of claim 1, wherein the main control module is a chipset including a microcontroller unit, a WIFI subsystem and a power management unit.

3. The Internet of things WIFI module development circuit of claim 1, wherein the communication interface comprises an SPI communication interface, an I2C communication interface, a PWM interface and a UART interface, the SPI communication interface is externally connected with a debugging device with an SPI interface, the I2C communication interface is externally connected with a debugging device with an I2C interface, and the PWM interface is externally connected with a debugging device with an execution mechanism; the UART interface is used for externally connecting the intelligent equipment with a serial port.

4. The Internet of things WIFI module development circuit of claim 1, wherein the serial-to-USB conversion unit comprises a USB-to-serial bridge controller U1, a USB interface J4, a crystal oscillator Y1, capacitors C1, C2, C3, C4, CB1, CB2, CB3, CB4, CB5, CB6, a light emitting diode D2003, a bidirectional voltage regulator diode D4, D7, D8, resistors R5, R6, R7, R10, R11, R12, R13, R14, R15, R16 and an inductor L1; the USB-to-serial bridge controller U1 is used for realizing data communication between a USB and a standard serial port, and the USB interface J4 is used for connecting a computer tool;

5. The Internet of things WIFI module development circuit of claim 1, wherein the power supply unit comprises a 5V power supply circuit, a 3.3V power supply circuit and a power consumption current measurement circuit; the 5V power supply circuit is used for accessing a 5V direct-current power supply, the 3.3V power supply circuit is used for providing a 3.3V working power supply for the main control unit and the serial port-to-USB unit, and the power consumption current measuring circuit is used for measuring the whole power consumption current of the Internet of things WIFI module development circuit.

6. The internet-of-things WIFI module development circuit of claim 5, wherein the 5V power supply circuit comprises a light emitting diode D2002, capacitors C2002, C2003, C2004, C2005, a resistor R2004, socket interfaces J2010, J2011, J2018;

7. The Internet of things WIFI module development circuit according to claim 5, wherein the 3.3V power supply circuit converts 5V DC voltage into 3.3V DC voltage to provide a 3.3V working power supply for the main control unit and the serial port-to-USB unit; the 3.3V power supply circuit comprises a voltage stabilizer U101, polar capacitors C2007, C2012, C2008 and C2001, a socket interface J2012, an inductor L100, and resistors R100, R101, R2011 and R2010;

8. The Internet of things WIFI module development circuit of claim 7, wherein the power consumption current measurement circuit comprises a socket interface J2004, a polar capacitor C2013, a light emitting diode D2001, resistors R2003 and R2012; the direct-current voltage 3.3V terminal is respectively connected to one end of the resistor R2012, one end of the socket interface J2004 and the anode of the light emitting diode D2001, the cathode of the light emitting diode D2001 is connected to one end of the resistor R2003, the other end of the resistor R2003 is grounded, the other end of the resistor R2012 is connected to the other end of the socket interface J2004 and then is respectively connected to the anode of the polar capacitor C2013, the power supply 3.3V and the voltage data terminal, the voltage data terminal is used for connecting an ammeter to measure current, and the cathode of the polar capacitor C2013 is grounded.

9. The Internet of things WIFI module development circuit of claim 1, wherein the main control unit further comprises a socket interface connected with the communication interface, so that the communication interface is connected with an external device through the socket interface.

10. The Internet of things WIFI module development circuit of claim 1, wherein the smart device comprises a smart gateway and smart home equipment.