CN114114943A - Smart home with environment monitoring system - Google Patents

Smart home with environment monitoring system Download PDF

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Publication number
CN114114943A
CN114114943A CN202111460370.XA CN202111460370A CN114114943A CN 114114943 A CN114114943 A CN 114114943A CN 202111460370 A CN202111460370 A CN 202111460370A CN 114114943 A CN114114943 A CN 114114943A
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pin
chip
power supply
monitoring system
pins
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CN202111460370.XA
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刘秋红
邹小梅
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Shenzhen Yifang Electronics Co ltd
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Shenzhen Yifang Electronics Co ltd
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Priority to CN202111460370.XA priority Critical patent/CN114114943A/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00—Systems controlled by a computer
    • G05B15/02—Systems controlled by a computer electric
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/26—Pc applications
    • G05B2219/2642—Domotique, domestic, home control, automation, smart house
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Fire Alarms (AREA)

Abstract

The invention discloses an intelligent home with an environment monitoring system, which comprises: the intelligent management system comprises an intelligent management platform and an environment monitoring system, the environment monitoring system is communicated with the intelligent management platform through WIFI, the environment monitoring system comprises a main control module, a power supply module, an acquisition module and a communication module, the power supply module provides stable 5V and 3.3V power supplies for the system, the acquisition module comprises a temperature and humidity detection circuit, a smoke detection circuit, a combustible gas detection circuit and a PM2.5 detection circuit, the main control module receives information detected by the collection module and judges indoor environment information, the main control module comprises a chip U2, a serial port circuit and an indicator light circuit, and the communication module can realize communication between the environment monitoring system and the intelligent management platform or a user mobile phone; the indoor environment information detection and comprehensive analysis device is reasonable in structure, can detect and comprehensively analyze indoor environment information, has a remote communication function, and has good market application value.

Description

Smart home with environment monitoring system
Technical Field
The invention relates to the field of intelligent home furnishing, in particular to an intelligent home furnishing with an environment monitoring system.
Background
Along with the development of society, people pay more and more attention to the living environment of oneself, the user hopes to master the environmental information in oneself house in time, know the air quality and the humiture in the house, when taking place to catch fire or gas leakage, the user hopes to discover in time, although there are various sensors at present, but all be in independent state, if the user wants to realize the detection of indoor humiture, air quality, smog and combustible gas simultaneously, need purchase corresponding sensor alone, and can only obtain the testing data on the sensor body, the inconvenient user carries out remote monitoring to the environment in house.
Disclosure of Invention
The invention provides an intelligent home with an environment monitoring system, aiming at the defects of the existing environment detection type intelligent home products.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a smart home with environmental monitoring system, includes: intelligent management platform and environmental monitoring system, through the WIFI communication between environmental monitoring system and the intelligent management platform, environmental monitoring system includes host system, power module, collection module and communication module, power module provides stable 5V and 3.3V power for the system, collection module connects host system's input, collection module includes temperature and humidity detection circuit, smog detection circuitry, combustible gas detection circuitry and PM2.5 detection circuitry, host system receives the information that collection module detected makes indoor environment information's judgement, host system includes chip U2, serial circuits and pilot lamp circuit, communication module can realize environmental monitoring system with communication between intelligent management platform or the user's cell-phone.
Furthermore, a crystal oscillator Y1 is connected between pins 15 and 16 of the chip U2, two ends of the crystal oscillator Y1 are respectively grounded through a capacitor C5 and a capacitor C6, a pin 17 of the chip U2 is grounded, a pin 41 of the chip U2 is connected with a 5V power supply, and the model of the chip U2 is STC12C5A60S 2.
Further, the serial circuit comprises a connector P3, wherein a 1 pin of the connector P3 is connected with a 5V power supply, a 4 pin is grounded, and 2 pins and 3 pins of the connector P3 are respectively connected with 6 pins and 8 pins of the chip U2.
Further, the indicator light circuit comprises light emitting diodes D1 and D2, wherein the anode of the light emitting diode D1 is connected with a 5V power supply, the cathode of the light emitting diode D2 is connected with the ground through a resistor R1, the anode of the light emitting diode D2 is connected with the 5V power supply, and the cathode of the light emitting diode D2 is connected with the 24 pins of the chip U2 through a resistor R2.
Further, the power module comprises a chip U1, a power interface J1 and a switch S1, wherein pins 2 and 3 of the power interface J1 are grounded, pin 1 is connected with pin 1 of the switch S1, pin 2 of the switch S1 is connected with a 5V power supply, a first lead of pin 1 of the chip U1 is connected with the 5V power supply, a second lead is grounded through parallel capacitors C1 and C3, a first lead of pin 2 of the chip U1 is connected with the 3.3V power supply, a second lead is grounded through parallel capacitors C2 and C4, pin 3 of the chip U1 is grounded, and the model number of the chip U1 is AMS 117-3.3.
Further, the temperature and humidity detection circuit comprises a chip U6, wherein a pin 1 of the chip U6 is connected with a 5V power supply, a pin 4 is grounded, a pin 2 of the chip U6 is connected with a pin 23 of the chip U2, and the chip U6 is DHT 11.
Further, the smoke detection circuit comprises a chip U5, pins 4, 5 and 6 of the chip U5 are grounded, a pin 2 is connected with a 5V power supply, a pin 3 of the chip U5 is connected with a pin 1 of the chip U5, a pin 1 of the chip U5 is connected with a pin 2 of a resistor R8, a pin 3 of the resistor R8 is connected with a pin 1 of the resistor R8, a pin 3 is connected with a pin 43 of the chip U2, and the type of the chip U5 is MQ-2.
Further, combustible gas detection circuitry includes chip U4, chip U4's 4, 5 and 6 pin ground connection, 2 pin joint 5V power, chip U4's 3 pin with chip U4's 1 pin links to each other, chip U4's 1 pin first pin meets 2 pin of resistance R6, the second pin meets resistance R6's 3 pin, resistance R6's 1 pin meets 5V power, 3 pin meets chip U2's 47 pin, chip U5's model is MQ-9.
Furthermore, the PM2.5 detection circuit comprises a connector P4, wherein a first lead of a pin 1 of the connector P4 is connected with a 5V power supply through a resistor R7, a second lead is connected with the ground through a capacitor C7, pins 2 and 4 of the connector P4 are connected with the ground, a pin 6 is connected with the 5V power supply, and pins 3 and 5 of the connector P4 are respectively connected with pins 12 and 4 of the chip U2.
Further, the communication module comprises a chip U3, wherein 3 pins of the chip U3 are connected with a 3.3V power supply through a resistor R3, 8 pins are connected with the 3,3V power supply, 15 pins are grounded, 16 pins are grounded through a resistor R5, 18 pins of the chip U3 are connected with 2 pins of a connector P2 through a resistor R4, 1 pin of the connector P2 is connected with the 3.3V power supply, 3 pins are grounded, 21 pins and 22 pins of the chip U3 are connected with 3 pins and 1 pin of a connector P1, 2 pins and 4 pins of the connector P1 are respectively connected with 45 pins and 46 pins of the chip U2, and the model number of the chip U3 is esp 8266.
Compared with the prior art, the smart home with the environment monitoring system has the following beneficial effects: the environment monitoring system integrates various detection modules, can simultaneously detect indoor information of temperature, humidity, air quality, smoke and combustible gas and send the information to the main control module, and the main control module judges whether potential safety hazards exist in the home environment; can make host system pass through WIFI realize and the cell-phone between the communication to in real time know the indoor air condition on removing end APP for the user, when there is the potential safety hazard in the house environment, can upload alarm information to the upper intelligent management platform, respond to by upper platform, and in time send alarm information to the user, make the user in time handle.
Drawings
FIG. 1 is a schematic diagram of a schematic structure of a main control module circuit according to the present invention;
FIG. 2 is a schematic diagram of the principle structure of the power module of the present invention;
FIG. 3 is a schematic diagram of the principle structure of the temperature and humidity detecting circuit of the present invention;
FIG. 4 is a schematic diagram of the smoke detection circuit of the present invention;
FIG. 5 is a schematic diagram of the principle structure of the combustible gas detection circuit of the present invention;
FIG. 6 is a schematic diagram of the PM2.5 detection circuit of the present invention;
fig. 7 is a schematic structural diagram of a communication module according to the present invention.
Detailed Description
It should be noted that the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention 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 "secured to" 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 as used herein are for descriptive 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The smart home with the environment monitoring system of the present invention is described in detail below with reference to fig. 1-7:
embodiment 1, as shown in fig. 1 to 7, a smart home with an environmental monitoring system includes: intelligent management platform and environmental monitoring system, through the WIFI communication between environmental monitoring system and the intelligent management platform, environmental monitoring system includes host system, power module, collection module and communication module, power module provides stable 5V and 3.3V power for the system, collection module connects host system's input, collection module includes temperature and humidity detection circuit, smog detection circuitry, combustible gas detection circuitry and PM2.5 detection circuitry, host system receives the information that collection module detected makes indoor environment information's judgement, host system includes chip U2, serial circuits and pilot lamp circuit, communication module can realize environmental monitoring system with communication between intelligent management platform or the user's cell-phone.
In the embodiment, the environment monitoring system is communicated with the upper intelligent household platform in a WiFi mode, when a plurality of rooms to be monitored exist, the intelligent management platform can be connected with the plurality of environment monitoring systems through the WIFI, a user communicates with the upper intelligent management platform when the user is not indoors, the mobile phone WIFI is connected with the communication module when the user is indoors, and the mobile phone WIFI can also be directly communicated with the intelligent environment monitoring system, compared with the case that remote communication is arranged at each environment monitoring system, the cost is greatly saved, the acquisition module acquires indoor environment information in real time and uploads the indoor environment information to the main control module, the main control module comprehensively analyzes the acquired environment information, when the detected value exceeds a preset value, the safety hidden danger exists in the room is judged, for example, when smoke exceeds the standard, and the temperature and the humidity exceed the preset range, the possibility of fire can be judged, and when the safety hidden danger exists, the main control module sends alarm information, alarm information accessible communication module direct transmission is to user's cell-phone, makes the warning to the user, simultaneously, alarm information uploads to upper intelligent management platform, is reacted by upper platform, if when indoor PM2.5 content exceeds standard, upper intelligent management platform can open air exchange system according to the environmental monitoring system request.
Embodiment 2, as shown in fig. 1, a crystal oscillator Y1 is connected between pins 15 and 16 of the chip U2, two ends of the crystal oscillator Y1 are respectively grounded through a capacitor C5 and a capacitor C6, a pin 17 of the chip U2 is grounded, a pin 41 of the chip U2 is connected to a 5V power supply, and the model number of the chip U2 is STC12C5a60S 2; the chip U2 can receive and process the information collected by the collecting module, and send alarm information to users when numerical values exceed standards and potential safety hazards exist indoors.
Embodiment 3, as shown in fig. 1, the serial circuit comprises a connector P3, wherein 1 pin of the connector P3 is connected with a 5V power supply, 4 pins are grounded, and 2 pins and 3 pins of the connector P3 are respectively connected with 6 pins and 8 pins of the chip U2; through the connector P3, the user can use computer to connect with the main control module to check or adjust the system data.
Embodiment 4, as shown in fig. 1, the indicator light circuit includes light emitting diodes D1 and D2, the anode of the light emitting diode D1 is connected to 5V power, the cathode is connected to ground through a resistor R1, the anode of the light emitting diode D2 is connected to 5V power, and the cathode is connected to the 24 pin of the chip U2 through a resistor R2; the LED D1 is used to indicate the system power status, and the LED D2 is used to indicate the working condition of the main control module chip.
Embodiment 5, as shown in fig. 2, the power module includes a chip U1, a power interface J1, and a switch S1, where pins 2 and 3 of the power interface J1 are grounded, pin 1 is connected to pin 1 of the switch S1, pin 2 of the switch S1 is connected to a 5V power supply, pin 1 of the chip U1 is connected to a 5V power supply, a second pin is grounded through parallel capacitors C1 and C3, pin 2 of the chip U1 is connected to a 3.3V power supply, a second pin is connected to ground through parallel capacitors C2 and C4, pin 3 of the chip U1 is grounded, and the model number of the chip U1 is AMS 117-3.3; the system supplies power through a power interface J1, the system supplies power through a 5V power supply, a switch S1 is used for controlling the switch of the power supply, and the 5V power supply can be converted into a 3.3V power supply through a chip U1 to be used by the system.
Embodiment 6, as shown in fig. 3, the temperature and humidity detection circuit includes a chip U6, a pin 1 of the chip U6 is connected to a 5V power supply, a pin 4 is grounded, a pin 2 of the chip U6 is connected to a pin 23 of the chip U2, and the model number of the chip U6 is DHT 11; the temperature and humidity detection circuit adopts a DHT11 temperature and humidity detection sensor to detect indoor temperature and humidity information, and the temperature and humidity information can be transmitted to the single chip microcomputer through the communication between the single bus and the single chip microcomputer.
Embodiment 7, as shown in fig. 4, the smoke detection circuit includes a chip U5, pins 4, 5, and 6 of the chip U5 are grounded, a pin 2 is connected to a 5V power supply, a pin 3 of the chip U5 is connected to a pin 1 of the chip U5, a pin 1 of the chip U5 is connected to a pin 2 of a resistor R8, a pin 3 of the resistor R8 is connected to a pin 1 of the resistor R8, a pin 3 is connected to a pin 43 of the chip U2, and the chip U5 is of type MQ-2; the smoke detection circuit detects indoor smoke concentration through acquiring AD data and after the AD data are calibrated, and transmits the indoor smoke concentration to the main control module, so that alarm information can be sent to a user when a fire disaster happens.
Embodiment 8, as shown in fig. 5, the combustible gas detection circuit includes a chip U4, pins 4, 5 and 6 of the chip U4 are grounded, a pin 2 is connected to a 5V power supply, a pin 3 of the chip U4 is connected to a pin 1 of the chip U4, a pin 1 of the chip U4 is connected to a pin 2 of a resistor R6, a pin 3 of the resistor R6, a pin 1 of the resistor R6 is connected to a 5V power supply, a pin 3 is connected to a pin 47 of the chip U2, and the chip U5 is of model number MQ-9; combustible gas detection circuitry detectable CO, combustible gas such as CH4 ensure can carry out the early warning to the user when the gas is revealed.
Example 9, as shown in fig. 6, the PM2.5 detection circuit includes a connector P4, a first lead of pin 1 of the connector P4 is connected to a 5V power supply via a resistor R7, a second lead is connected to ground via a capacitor C7, pins 2 and 4 of the connector P4 are connected to ground, pin 6 is connected to a 5V power supply, and pins 3 and 5 of the connector P4 are connected to pins 12 and 4 of the chip U2, respectively; the PM2.5 detection circuit adopts a GP2Y1010AU module to detect the PM2.5 concentration, outputs analog quantity, and calculates and calibrates after the collection of the main control module, thereby obtaining the PM2.5 concentration.
Embodiment 10, as shown in fig. 7, the communication module includes a chip U3, pin 3 of the chip U3 is connected to a 3.3V power supply through a resistor R3, pin 8 is connected to a 3,3V power supply, pin 15 is grounded, pin 16 is grounded through a resistor R5, pin 18 of the chip U3 is connected to pin 2 of a connector P2 through a resistor R4, pin 1 of the connector P2 is connected to a 3.3V power supply, pin 3 is grounded, pins 21 and 22 of the chip U3 are connected to pins 3 and 1 of a connector P1, pins 2 and 4 of the connector P1 are connected to pins 45 and 46 of the chip U2, respectively, and the model number of the chip U3 is esp 66; the communication module adopts a WIFI module, communicates with the main control module through a serial port, can be connected with the router after the system is powered on, and then transmits data sent by the main control module to an upper intelligent home management platform or user mobile phone terminal app.
The working principle of the invention is as follows:
1. after the system is powered on, the acquisition module acquires indoor temperature and humidity, PM2.5, smoke, CO and CH4 combustible gas information in real time and uploads the information to the main control module, and the main control module transmits detection data to the mobile phone in real time through the communication module, so that a user can conveniently check the information through the mobile phone APP;
2. when taking place to catch fire or when the gas leaks, host system is through carrying out the analysis to the information of gathering, finds that there is the potential safety hazard indoors, and host system sends alarm information, sends to upper intelligent house management platform through communication module, makes corresponding action by house management platform to warn the user.
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A smart home with an environmental monitoring system, comprising: intelligent management platform and environmental monitoring system, its characterized in that, through the WIFI communication between environmental monitoring system and the intelligent management platform, environmental monitoring system includes host system, power module, collection module and communication module, power module provides stable 5V and 3.3V power for the system, collection module connects host system's input, collection module includes temperature and humidity detection circuit, smoke detection circuit, combustible gas detection circuit and PM2.5 detection circuit, host system receives the information that collection module detected makes indoor environmental information's judgement, host system includes chip U2, serial circuits and pilot lamp circuit, communication module can realize environmental monitoring system with communication between intelligent management platform or the user's cell-phone.
2. The smart home with the environment monitoring system according to claim 1, wherein a crystal oscillator Y1 is connected between pins 15 and 16 of the chip U2, two ends of the crystal oscillator Y1 are respectively connected to the ground through a capacitor C5 and a capacitor C6, a pin 17 of the chip U2 is connected to the ground, a pin 41 of the chip U2 is connected to a 5V power supply, and the chip U2 is STC12C5A60S 2.
3. The smart home with the environmental monitoring system according to claim 1, wherein the serial circuit comprises a connector P3, a 1 pin of the connector P3 is connected with a 5V power supply, a 4 pin is connected with ground, and 2 pins and 3 pins of the connector P3 are respectively connected with 6 pins and 8 pins of the chip U2.
4. The smart home with the environment monitoring system according to claim 1, wherein the indicator light circuit comprises light emitting diodes D1 and D2, the anode of the light emitting diode D1 is connected with a 5V power supply, the cathode of the light emitting diode D2 is connected with the ground through a resistor R1, the anode of the light emitting diode D2 is connected with the 5V power supply, and the cathode of the light emitting diode D2 is connected with the 24 pin of the chip U2 through a resistor R2.
5. The smart home with the environment monitoring system according to claim 1, wherein the power module comprises a chip U1, a power interface J1 and a switch S1, pins 2 and 3 of the power interface J1 are grounded, pin 1 is grounded to pin 1 of the switch S1, pin 2 of the switch S1 is grounded to a 5V power supply, a first lead of pin 1 of the chip U1 is grounded to a 5V power supply, a second lead is grounded through parallel capacitors C1 and C3, a first lead of pin 2 of the chip U1 is grounded to a 3.3V power supply, a second lead is grounded through parallel capacitors C2 and C4, pin 3 of the chip U1 is grounded, and the model number of the chip U1 is AMS 117-3.3.
6. The smart home with the environment monitoring system according to claim 1, wherein the temperature and humidity detection circuit comprises a chip U6, a pin 1 of the chip U6 is connected with a 5V power supply, a pin 4 is connected with ground, a pin 2 of the chip U6 is connected with a pin 23 of the chip U2, and the chip U6 is DHT11 in model number.
7. The smart home with the environment monitoring system according to claim 1, wherein the smoke detection circuit comprises a chip U5, pins 4, 5 and 6 of the chip U5 are grounded, a 2 pin is connected with a 5V power supply, a 3 pin of the chip U5 is connected with a 1 pin of the chip U5, a first pin of the 1 pin of the chip U5 is connected with a 2 pin of a resistor R8, a second pin is connected with a 3 pin of the resistor R8, the 1 pin of the resistor R8 is connected with a 5V power supply, the 3 pin is connected with a 43 pin of the chip U2, and the chip U5 is of type MQ-2.
8. The smart home with the environment monitoring system according to claim 1, wherein the combustible gas detection circuit comprises a chip U4, pins 4, 5 and 6 of the chip U4 are grounded, a 2 pin is connected with a 5V power supply, a 3 pin of the chip U4 is connected with a 1 pin of the chip U4, a first pin of the 1 pin of the chip U4 is connected with a 2 pin of a resistor R6, a second pin is connected with a 3 pin of the resistor R6, the 1 pin of the resistor R6 is connected with a 5V power supply, the 3 pin is connected with a 47 pin of the chip U2, and the chip U5 is MQ-9 in model number.
9. The smart home with the environment monitoring system according to claim 1, wherein the PM2.5 detection circuit comprises a connector P4, a first lead of a 1-pin of the connector P4 is connected with a 5V power supply through a resistor R7, a second lead is connected with the ground through a capacitor C7, pins 2 and 4 of the connector P4 are connected with the ground, a 6-pin is connected with the 5V power supply, and pins 3 and 5 of the connector P4 are respectively connected with pins 12 and 4 of the chip U2.
10. The smart home with the environment monitoring system according to claim 1, wherein the communication module comprises a chip U3, a pin 3 of the chip U3 is connected with a power supply of 3.3V through a resistor R3, a pin 8 is connected with a power supply of 3 and 3V, a pin 15 is grounded, a pin 16 is grounded through a resistor R5, a pin 18 of the chip U3 is connected with a pin 2 of a connector P2 through a resistor R4, a pin 1 of the connector P2 is connected with a power supply of 3.3V, a pin 3 is grounded, pins 21 and 22 of the chip U3 are connected with a pin 3 and a pin 1 of a connector P1, pins 2 and 4 of the connector P1 are respectively connected with pins 45 and 46 of the chip U2, and the model number of the chip U3 is esp 8266.
CN202111460370.XA 2021-12-02 2021-12-02 Smart home with environment monitoring system Pending CN114114943A (en)

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