CN105279931A - Wi-Fi (wireless fidelity) and wireless radio frequency communication-based remote temperature and humidity cloud detection device - Google Patents

Wi-Fi (wireless fidelity) and wireless radio frequency communication-based remote temperature and humidity cloud detection device Download PDF

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Publication number
CN105279931A
CN105279931A CN201510738034.5A CN201510738034A CN105279931A CN 105279931 A CN105279931 A CN 105279931A CN 201510738034 A CN201510738034 A CN 201510738034A CN 105279931 A CN105279931 A CN 105279931A
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China
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pin
module
host computer
communication
microcontroller
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CN201510738034.5A
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Chinese (zh)
Inventor
孙智权
赵不贿
江帅
周炜彬
王占雷
周先锋
邹冰妍
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镇江苏仪德科技有限公司
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Priority to CN201510738034.5A priority Critical patent/CN105279931A/en
Publication of CN105279931A publication Critical patent/CN105279931A/en

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Abstract

The invention discloses a Wi-Fi (wireless fidelity) and wireless radio frequency communication-based remote temperature and humidity cloud detection device and belongs to the technical field of internet of things. The device comprises a host system, a plurality of slave systems and a router, wherein the router and the host system perform Wi-Fi wireless communication; mutual communication between the host system and the plurality of slave systems is realized through an SI4432 module. According to the Wi-Fi and wireless radio frequency communication-based remote temperature and humidity cloud detection device, due to the fact that the mutual communication between the host system and the slave systems is realized through the SI4432 module, and the communication between the host system and the router is realized through a Wi-Fi network, the device has the characteristics of high transmission efficiency, wide coverage range, low power consumption, high penetration ability, simple wiring and convenience in use.

Description

Based on the long-range humiture cloud detection device of Wi-Fi and twireless radio-frequency communication

Technical field

The invention belongs to technology of Internet of things field, be specifically related to the long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication.

Background technology

In recent years, along with the rise of Internet industry, cloud platform as a kind of emerging Internet service platform for people provide the on-line storage of data, inquiry, backup and processing capacity.It has that cost is low, space utilisation is high, the application characteristic of many applied environments and high security.Therefore, cloud platform can be applicable to Smart Home, mobile Internet, the fields such as agricultural automation.Journey humiture cloud detection device is there is no in prior art.

Summary of the invention

Goal of the invention: the object of the present invention is to provide the long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication, overcomes the problem that the wiring of traditional embedded ethernet is loaded down with trivial details, use complexity, high cost, realizes the transmission of high-level efficiency and low-power consumption.

Technical scheme: for achieving the above object, the present invention adopts following technical scheme:

Based on the long-range humiture cloud detection device of Wi-Fi and twireless radio-frequency communication, comprise a host computer system and some slave systems and router; Described router and host computer system carry out Wi-Fi radio communication;

Described host computer system comprises STM32 microcontroller, Wi-Fi module, LCD display, Flash flash memory, one 433MHz wireless radio frequency modules, serial port module, J-Link downloads mouth and the first power module, wherein, described STM32 microcontroller and Flash flash memory, one 433MHz wireless radio frequency modules is connected alternately with Wi-Fi module, described host computer system realizes communicating with host computer and Wi-Fi module by serial port module, described host computer system is downloaded mouth by J-Link and is carried out download program and debugging, the first described power module provides 5V/3.3V voltage for host computer system,

Described slave system comprises 51 single-chip microcomputers, the 2nd 433MHz wireless radio frequency modules, Temperature Humidity Sensor, serial ports and second source module; Slave system gathers external environment humiture data by Temperature Humidity Sensor; Slave system is communicated and download program with host computer by serial ports; Second source module provides 3.3V voltage for slave system; Host computer system is connected by a 433MHz wireless radio frequency modules and the 2nd 433MHz wireless radio frequency modules with slave system.

Described STM32 microcontroller is based on Cortex-M3 kernel and have 72MHz internal clock frequencies, and external pin number is 100, supports the interface of USB, FSMC, IIC, SPI or CAN.

Described LCD display model ili9341, it adopts FSMC to drive, and needs 22 ports, and FSMC is by the multiplexing functional realiey of microcontroller I/O.

Described Wi-Fi module is serial ports Wi-Fi, and support Ethernet pattern, workstation mode, hotspot pattern, module is by UART2 and micro-controller communications, and need 2 ports, UART2 needs by the multiplexing functional realiey of microcontroller I/O.

One 433MHz wireless radio frequency modules and the 2nd 433MHz wireless radio frequency modules all launch 433MHz radiofrequency signal, and default baud rate is 1200bps.It is high that this frequency range has penetrance, and anti-interference is good, the feature that propagation distance is long, coordinate 7dbm gain antenna communication distance can reach 1000m again under spacious condition, module is by SPI and micro-controller communications, and need 4 ports, SPI needs by the multiplexing functional realiey of microcontroller I/O.

Described Flash flash memory type is W25Q16, and capacity is 16Mbits.This module, by SPI and micro-controller communications, needs 4 ports, and SPI needs by the multiplexing functional realiey of microcontroller I/O, and its function is the access realizing instant data and system parameter fast.

Described serial port module uses MAX3232 as TTL-DB9 serial ports conversion chip, and MAX3232 has 2 road TTL-DB9 transfer links, and DB9 can realize the communication of microcontroller and Wi-Fi module and host computer easily.

51 described single-chip microcomputer models are STC12LE5A60S2, Temperature Humidity Sensor model is AMS2302,2nd 433MHz wireless radio frequency modules model is SI4432, serial ports comprises arranges needle interface for the 7dbm gain antenna of 433MHz radio communication and 1*4, and second source module comprises 2*3.7V lithium battery and AMS1117-3.3V voltage stabilizing chip block; The first described power module model is RT7272B.

51 single-chip microcomputer STC12LE5A60S2 have 11.0592MHz internal clock frequencies, and external pin number is 44.5V-36V photovoltaic conversion can be 5V voltage by the first power module, coordinates AM1117-3.3V voltage stabilizing chip can be 3.3V voltage by 5V voltage transitions.Wireless radio frequency modules SI4432, by simulation SPI and 51 kernel single chip communications, is equipped with 7dbm gain antenna communication distance and can reaches 1000m under spacious condition.Temperature Humidity Sensor is 16 megadyne temperature humidity sensors, and precision is 0.1, passes through formula: data integral part * 256+ fraction part, can obtain concrete humiture numerical value.1*4 arranges needle interface and has externally fed interface and serial interface, and wherein serial interface is directly drawn from 51 kernel single-chip microcomputers, is Transistor-Transistor Logic level, can be communicated and programming by TTL-USB equipment with host computer.Second source module is made up of 2*3.7V No. seven chargeable lithium cells and AMS1117-3.3V voltage stabilizing chip, provides stable 3.3V voltage.

Beneficial effect: compared with prior art, long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication of the present invention, the mutual communication of main frame, slave system is realized by SI4432 module, host computer system, by Wi-Fi network and router communication, has that transfer efficiency is high, wide coverage, low in energy consumption, penetration power is high, connect up feature simple, easy to use.

Accompanying drawing explanation

Fig. 1 is the long-range humiture cloud detection device circuit theory diagram based on Wi-Fi and twireless radio-frequency communication;

Fig. 2 is main frame STM32 microcontroller minimum system circuit theory diagrams;

Fig. 3 is main frame SI4432 modular circuit schematic diagram;

Fig. 4 is the former topic figure of main frame Flash modular circuit;

Fig. 5 is main frame Wi-Fi module circuit theory diagrams;

Fig. 6 is main frame LCD LCD circuit schematic diagram;

Fig. 7 is serial port of host computer modular circuit schematic diagram;

Fig. 8 is host reset circuit theory diagrams;

Fig. 9 is host power supply modular circuit schematic diagram;

Figure 10 is from machine 51 kernel single chip circuit schematic diagram;

Figure 11 is from machine SI4432 modular circuit schematic diagram;

Figure 12 is from machine Temperature Humidity Sensor AMS2302 circuit theory diagrams;

Figure 13 is from machine serial interface circuit theory diagrams;

Figure 14 is from electromechanical source modular circuit schematic diagram.

Specific embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described further.

As shown in Figure 1, based on the long-range humiture cloud detection device circuit theory diagram of Wi-Fi and twireless radio-frequency communication, host computer system and slave system is comprised; Wherein, host computer system comprises STM32 microcontroller 1-1, Wi-Fi module 1-2, LCD display 1-3, Flash flash memory 1-4, a 433MHz wireless radio frequency modules 1-5, and serial port module 1-6, J-Link download mouth 1-7, the first power module 1-8; Slave system comprises 51 single-chip microcomputer 2-1, the 2nd 433MHz wireless radio frequency modules 2-2, Temperature Humidity Sensor 2-3, serial ports 2-4, second source module 2-5; Host computer system and slave system set up contact by a 433MHz wireless radio frequency modules 1-5 and the 2nd 433MHz wireless radio frequency modules 2-2; Host computer system is by Wi-Fi module 1-2 and extraneous router communication; Host computer system realizes communicating with host computer and Wi-Fi module 1-2 by serial port module 1-6; Host computer system is downloaded mouth 1-7 by J-Link and is carried out download program and debugging; First power module 1-8 provides 5V/3.3V voltage for host computer system; Slave system gathers external environment humiture data by Temperature Humidity Sensor 2-3; Communicated and download program with host computer from machine by serial ports 2-4; Second source module 2-5 provides 3.3V voltage for whole slave system.Serial port module 1-6 is a module on host computer system circuit board, be made up of MAX3232 serial port chip, connect two DB9 serial port, these two DB9 serial port are connected with wifi module with host microcontroller respectively, and effect is respectively debug host system and setting wifi module parameter.Serial ports 2-4 is 1 × 4pin interface on slave system circuit board, and interface is defined as 5V, GND, serial ports receives, serial ports sends.Wherein, serial ports receives and sends draws from 51 single-chip microcomputers the 5th pin and the 7th pin with serial ports, act as and debugs slave system, downloads, externally fed when not connecing battery.

As shown in Figure 2, be STM32 microcontroller minimum system circuit theory diagrams, the concrete model of chip is STM32F103VET6; STM32F103VET6 microcontroller the 11st pin, the 21st pin connect 0 Ohmage, the 22nd pin, the 28th pin, the 50th pin, the 75th pin, the 100th pin connect 3.3V power supply; 10th pin, the 19th pin, the 20th pin connect 0 Ohmage, the 27th pin, the 49th pin, the 74th pin, the 99th pin ground connection; 73rd pin is unsettled; 8th pin, the 9th pin connect 32.768KHz external crystal-controlled oscillation, and crystal oscillator filter capacitor is 15pF; 12nd pin, the 13rd pin connect 8MHz external crystal-controlled oscillation, and crystal oscillator filter capacitor is 22pF; 6th pin connects button cell and can be energized to RTC under microcontroller powering-off state; 72nd pin, the 76th pin, the 77th pin, the 89th pin, the 90th pin are J-Link download interface, and wherein the 72nd pin, the 76th pin and ground can realize the download of SWD three-wire system; The height combined optional of the 37th pin, the 94th pin level selects Starting mode and the downloading mode of microcontroller, and being respectively the 37th pin is that low level, the 94th is for being that microcontroller Flash starts during low level; 37th pin is low level, the 94th pin high level time be serial ports download Starting mode; 37th pin is high level, the 94th pin high level time be that microcontroller RAM starts, wherein above-mentioned first kind of way is conventional Starting mode.

As shown in Figure 3, be main frame SI4432 modular circuit schematic diagram; SI4432 module the 1st pin, the 12nd pin ground connection; 8th pin connects 3.3V power supply; 2nd pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin, the 7th pin connect microcontroller the 47th pin, the 48th pin, the 51st pin, the 52nd pin, the 53rd pin, the 54th pin respectively, and microcontroller makes above-mentioned 51,52,53,54 pins realize SPI2 by the multiplexing function of I/O mouth.

As shown in Figure 4, be main frame Flash modular circuit schematic diagram, the concrete model of Flash chip is W25Q16, has 16Mbits storage space; Flash module the 4th pin ground connection, the 7th pin, the 8th pin connect 3.3V power supply; 1st pin is chip slapper choosing end, and external pull-up resistor keeps high level to pin chip, ensures that the communication of chip and microcontroller is stablized; 1st pin, the 2nd pin, the 5th pin, the 6th pin connect microcontroller the 29th pin, the 31st pin, the 32nd pin, the 30th pin respectively, and microcontroller makes above-mentioned pin realize SPI1 by the multiplexing function of I/O mouth.

As shown in Figure 5, for Wi-Fi module circuit theory diagrams, the concrete model of Wi-Fi module is HLK-RM04; Wi-Fi module the 1st pin, the 28th pin connect 5V power supply; 2nd pin ground connection; 10th pin, the 25th pin are reset pin, and external touch-switch length is restarted by the reset that can realize module; 10th pin connects microcontroller the 34th pin, exits transparent transmission state for microprocessor controls Wi-Fi module; 20th pin, the 21st pin connect microcontroller the 25th pin, the 26th pin respectively, and microcontroller makes above-mentioned pin realize USART2 by the multiplexing function of I/O mouth; Wi-Fi module can accept the control of extraneous host computer to it by the 22nd pin, the 26th pin.

As shown in Figure 6, be main frame LCD LCD circuit schematic diagram, the concrete model of LCD liquid crystal display is ili9341; LCD liquid crystal display the 31st pin connects 3.3V power supply; 1st, 32 pin ground connection; LCD liquid crystal display the 3rd, 4,5,6,7,8,9,10,11,12,13,14,15,16,17,18 pins connect microcontroller the 57th, 56,55,46,45,44,43,42,41,40,39,38,82,81,62,61 pins, microcontroller makes above-mentioned pin become the 16 bit data mouths of FSMC by the multiplexing function of I/O mouth; 2nd, 19,20,21,22 pins connect microcontroller the 98th, 85,86,58,88,60 pins, simulate 8080 sequential needed for LCD liquid crystal display for microcontroller by FSMC.

As shown in Figure 7, be serial port of host computer modular circuit schematic diagram, serial port module uses TTL-DB9 serial ports conversion chip MAX3232; MAX3232 the 2nd pin, the 16th pin connect 5V power supply; 15th pin ground connection; The indirect 0.1uF electric capacity of the 1st pin and the 3rd pin; The indirect 0.1uF electric capacity of the 4th pin and the 5th pin; The indirect 0.1uF electric capacity on the 6th pin and ground; 9th pin, the 10th pin connect microcontroller the 68th pin, the 69th pin, and microcontroller makes above-mentioned pin realize USART1 by the multiplexing function of I/O mouth; 11st pin, the 12nd pin external Wi-Fi module the 25th pin, the 26th pin; 7th pin, the 8th pin, the 13rd pin, the 14th pin connect 2 DB9 serial port respectively, wherein the 7th pin and the corresponding DB9 serial port belonging to Wi-Fi module of the 8th pin, the 13rd pin and the corresponding DB9 serial port belonging to microcontroller of the 14th pin.

As shown in Figure 8, be host reset circuit theory diagrams, the indirect touch-switch on microcontroller the 14th pin and ground, and external pull-up resistor hold reset port is high level, thus make system stability; Action principle is when touch-switch is pressed, and system reset port is low level, and system reset is effective; When touch-switch is not pressed, reseting port is high level, resets invalid, system worked well.

As shown in Figure 9, be host power supply modular circuit schematic diagram, adopt RT7272B power management chip and AMS1117-3.3V voltage stabilizing chip; RT7272B the 8th pin is input 5V-36V DC voltage; 1st pin is for exporting 5V DC voltage; Whole power circuit adopts the filtering of LC oscillatory circuit, can the high frequency spurs of the extraneous direct supply input of filtering, ensures the normal work of whole system electronic devices and components; AMS1117-3.3V voltage stabilizing chip the 3rd pin is the input of 5V voltage; 2nd pin is that 3.3V voltage exports; 1st pin ground connection.

As shown in Figure 10, for from machine 51 kernel single chip circuit schematic diagram, concrete model is STC12LE5A60S2; The external 3.3V power supply of STC12LE5A60S2 the 38th pin; 29th pin is that the external 3.3V of reseting port 2 can keep being often high level; 14th pin, the 15th pin connect 11.0592MHz external crystal-controlled oscillation, and crystal oscillator filter capacitor is 22pF; The indirect touch-switch on the 4th pin and ground, and external pull-up resistor hold reset port is high level, thus make system stability; The mechanism of action is identical with host reset circuit function mechanism.

As shown in figure 11, for from machine SI4432 modular circuit schematic diagram; SI4432 module the 1st pin, the 12nd pin ground connection; 8th pin connects 3.3V power supply; 2nd pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin, the 7th pin connect 51 kernel single-chip microcomputer the 36th pins, the 9th pin, the 37th pin, the 35th pin, the 34th pin, the 33rd pin respectively, and 51 kernel single-chip microcomputers realize the control to SI4432 module by simulation SPI.

As shown in figure 12, for from machine Temperature Humidity Sensor AMS2302 circuit theory diagrams, the concrete model of Temperature Humidity Sensor is AMS2302; The wherein external 3.3V power supply of AMS2302 module the 1st pin; 3rd pin is unsettled; 4th pin ground connection; 2nd pin connects 51 kernel single-chip microcomputer the 32nd pins, and external pull-up resistor keeps high level.

As shown in figure 13, for from machine serial interface circuit theory diagrams, serial interface uses 1*4 to arrange pin and draws, for externally fed, host computer communication and download program; It is the input of 5V power supply that 1*4 arranges pin the 1st pin; 2nd pin ground connection; 3rd pin, the 4th pin connect 51 kernel single-chip microcomputer the 5th pins, the 7th pin respectively.

As shown in figure 14, for from electromechanical source modular circuit schematic diagram, power module uses 2*3.7V chargeable lithium cell and AMS1117-3.3V voltage stabilizing chip; Wherein, AMS1117-3.3V voltage stabilizing chip the 3rd pin is cell voltage and the input of extraneous 5V voltage; 2nd pin is that 3.3V voltage exports; 1st pin ground connection.

Claims (8)

1. based on the long-range humiture cloud detection device of Wi-Fi and twireless radio-frequency communication, it is characterized in that: comprise a host computer system and some slave systems and router; Described router and host computer system carry out Wi-Fi radio communication;
Described host computer system comprises STM32 microcontroller (1-1), Wi-Fi module (1-2), LCD display (1-3), Flash flash memory (1-4), one 433MHz wireless radio frequency modules (1-5), serial port module (1-6), J-Link downloads mouth (1-7) and the first power module (1-8), wherein, described STM32 microcontroller (1-1) and Flash flash memory (1-4), one 433MHz wireless radio frequency modules (1-5) is connected alternately with Wi-Fi module (1-2), described host computer system realizes communicating with host computer and Wi-Fi module (1-2) by serial port module (1-6), described host computer system is downloaded mouth (1-7) by J-Link and is carried out download program and debugging, described the first power module (1-8) provides 5V/3.3V voltage for host computer system,
Described slave system comprises 51 single-chip microcomputers (2-1), the 2nd 433MHz wireless radio frequency modules (2-2), Temperature Humidity Sensor (2-3), serial ports (2-4) and second source module (2-5); Slave system gathers external environment humiture data by Temperature Humidity Sensor (2-3); Slave system is communicated and download program with host computer by serial ports (2-4); Second source module (2-5) provides 3.3V voltage for slave system; Host computer system is connected by a 433MHz wireless radio frequency modules (1-5) and the 2nd 433MHz wireless radio frequency modules (2-2) with slave system.
2. the long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication according to claim 1, it is characterized in that: described STM32 microcontroller (1-1) is based on Cortex-M3 kernel and have 72MHz internal clock frequencies, external pin number is 100, supports the interface of USB, FSMC, IIC, SPI or CAN.
3. the long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication according to claim 1, it is characterized in that: described LCD display (1-3) model ili9341, it adopts FSMC to drive, need 22 ports, FSMC is by the multiplexing functional realiey of microcontroller I/O.
4. the long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication according to claim 1, it is characterized in that: described Wi-Fi module (1-2) is serial ports Wi-Fi, support Ethernet pattern, workstation mode, hotspot pattern, module is by UART2 and micro-controller communications, need 2 ports, UART2 needs by the multiplexing functional realiey of microcontroller I/O.
5. the long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication according to claim 1, it is characterized in that: a 433MHz wireless radio frequency modules (1-5) and the 2nd 433MHz wireless radio frequency modules (2-2) all launch 433MHz radiofrequency signal, and default baud rate is 1200bps.
6. the long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication according to claim 1, is characterized in that: described Flash flash memory (1-4) model is W25Q16, and capacity is 16Mbits.This module, by SPI and micro-controller communications, needs 4 ports, and SPI needs by the multiplexing functional realiey of microcontroller I/O, and its function is the access realizing instant data and system parameter fast.
7. the long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication according to claim 1, it is characterized in that: described serial port module (1-6) uses MAX3232 as TTL-DB9 serial ports conversion chip, MAX3232 has 2 road TTL-DB9 transfer links, and DB9 can realize the communication of microcontroller and Wi-Fi module and host computer easily.
8. the long-range humiture cloud detection device based on Wi-Fi and twireless radio-frequency communication according to claim 1, it is characterized in that: described 51 single-chip microcomputers (2-1) model is STC12LE5A60S2, Temperature Humidity Sensor (2-3) model is AMS2302,2nd 433MHz wireless radio frequency modules (2-2) model is SI4432, serial ports (2-4) comprises arranges needle interface for the 7dbm gain antenna of 433MHz radio communication and 1*4, and second source module (2-5) comprises 2*3.7V lithium battery and AMS1117-3.3V voltage stabilizing chip block; Described the first power module (1-8) model is RT7272B.
CN201510738034.5A 2015-11-03 2015-11-03 Wi-Fi (wireless fidelity) and wireless radio frequency communication-based remote temperature and humidity cloud detection device CN105279931A (en)

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CN106230947A (en) * 2016-08-03 2016-12-14 杭州电子科技大学 One easily expands data transmission device

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CN103402277A (en) * 2013-06-09 2013-11-20 张家港市鸿嘉数字科技有限公司 Greenhouse crop planting environment monitoring and control information system
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KR20100000626A (en) * 2008-06-25 2010-01-06 류문수 An automatic management system for nursery plant based on an ubiquitous sensor network
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