CN112462670A

CN112462670A - Smart home control system based on STM32F103

Info

Publication number: CN112462670A
Application number: CN202011390071.9A
Authority: CN
Inventors: 张惟祺; 于天河
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-03-09

Abstract

The invention discloses an STM32F 103-based intelligent home control system, and belongs to the technical field of Internet of things. The invention provides a method for helping people to remotely acquire indoor related information, perform human body infrared sensing detection, perform infrared control on the switch of electrical equipment, monitor fire, recognize voice and perform wireless communication. The fire monitoring module mainly analyzes data such as smoke, toxic gas and the like when a fire disaster occurs to judge different states of the fire disaster, and when the fire disaster is in a dangerous state, the singlechip module sends out a voice alarm function through the voice control module by detecting a threshold value of internal data; the wireless communication module controls the multifunctional switch of the indoor electric appliance and quickly and accurately transmits information to a user; the data acquisition module comprises various data monitoring of the home environment, including a series of data such as temperature, humidity, illumination intensity and PM2.5 of the acquired environment, and the TFTLCD displays the acquired data information. The intelligent household security system is mainly used for controlling and security protection of intelligent household.

Description

Smart home control system based on STM32F103

Technical Field

The invention particularly relates to an STM32F 103-based multi-data acquisition and household equipment intelligent control system, and belongs to the technical field of Internet of things.

Background

With the rapid development and application of technologies such as internet, embedded and the like, a great number of intelligent electronic products are gradually emerged in daily life of people. The electronic products not only bring comfort and convenience to people, but also improve the efficiency of doing things of people. Therefore, the living comfort, intelligence and safety are improved in the household environment, so that people can efficiently and easily finish trivial matters in daily life, and the method becomes a hot spot which is concerned by all human beings day by day. As an important direction for the research and development of the future Internet of things, the intelligent home control system has a great development prospect. The intelligent household control system is an integrated, automatic and internet intelligent system formed by applying various technologies, various devices closely related to life are organically combined together by taking a house as a platform to carry out indoor or outdoor monitoring and control, a living environment with higher comfort, strong convenience, high efficiency and safety can be created for residents, and meanwhile, the residential environment can become more and more intelligent and humanized.

At present, the traditional home has great defects and shortcomings, firstly, the intelligent home products are various, but most of the intelligent home products are independent systems, so that the operation is complicated, and the use and maintenance cost is wasted; although some intelligent devices are applied to life at present, the intelligent devices are difficult to popularize due to the reasons of high cost, complex operation, single performance and the like.

Disclosure of Invention

In order to overcome the defects of the existing home, the invention provides an intelligent and comprehensive intelligent home control system. Compared with the prior art, the equipment effectively solves the following key problems: on one hand, the problem that people remotely acquire indoor environment information and display all the information through a TFTLCD interface is effectively solved, and the user can conveniently check the information; in aspects of controlling indoor electrical equipment, fire alarm, remote control and the like, the accuracy of fire detection and the intellectualization of family control are improved by adopting a multi-sensor fusion technology and a voice recognition technology; the invention relates to a technical scheme of an intelligent home control system based on STM32F103, which comprises the following steps:

the design of the system mainly comprises the following aspects: STM32F103ZET6 host system, voice control module, data acquisition module, fire monitoring module, human infrared sensing module, network communication module and wireless transmission module respectively with host system connects.

The STM32F103ZET6 main control module is used as a CPU of a main control center, and is an 'enhanced' series of STM 32. Each module transmits data with the STM32F103 main control module through a transmission protocol, and the transmitted data is displayed through a TFTLCD liquid crystal display in order to be convenient to view.

The fire monitoring module can judge different states of fire according to the change of smoke and toxic gas concentration in the fire occurrence process and the change characteristics of the data according to analysis, the MQ-2 is suitable for the smoke alarm sensor for monitoring smoke and various flammable gas concentrations, the collected smoke concentration and carbon monoxide concentration data are used as characteristic parameters for detecting the fire, the data are fused, the fire occurrence condition of the detection environment is comprehensively judged, and when the fire monitoring module is in a dangerous state, the singlechip module sends out a voice alarm function through the voice control module by detecting the threshold value of internal data.

The voice control module selects an LD3320 unspecified person voice control module, the core of the voice control module is a DSP processor and an FIFO buffer, and a key word list is integrated in the DSP processor. The FIFO is a programming interface for the user, who can control the LD3320 through the SPI interface or the parallel interface. The voice of the system can control the switch of the household appliance and also has the control condition of feedback equipment.

The data acquisition module comprises various data monitoring of the home environment, including acquisition of a series of data such as temperature and humidity, illumination intensity and PM2.5 of the environment. The generated related data is displayed on the TFTLCD interface.

The wireless transmission module adopts a TC35I wireless communication system, can quickly and safely realize the functions of data and voice transmission, short message service and the like, and can work in two frequency ranges of GSM900KHZ and 1800 KHZ. The intelligent control system is communicated with the microprocessor through a serial port, bidirectional transmission of power connection, instructions, data, voice signals and control signals is achieved, and then intelligent control over a home system is achieved.

The network communication module selects DM9000 as a network communication chip, and is a high-speed network controller with high integration level and a general processor interface. The system can be directly connected with the STM32F103 for use, and the working voltage of the system can be 3.3V or 5V.

The human body infrared sensing module adopts HC-SR50 as the human body infrared sensor of the design. The device has the advantages of strong reliability, high sensitivity and high stability. When the human body radiates infrared outwards, the pyroelectric element in the module releases charges outwards after receiving the infrared, and finally outputs a high-level signal after being processed.

The invention has the beneficial effects that:

the invention discloses an intelligent home control system based on an STM32F103, and provides a home control system which is complete in function and can quickly realize intellectualization. The equipment solves the problems that the current home function is single and the operation is complex, completes various equipment information acquisition and control systems, facilitates remote control of indoor electrical equipment by a user, acquires indoor relevant information, and improves the intelligence of the home environment and helps people to better control the home environment if important conditions such as fire alarm and the like exist. Aiming at the problem of upgrading later-stage equipment, the upgrading and the transformation of system equipment can be remotely realized without disassembling the equipment. The system is embedded into a TFTLCD display interface to realize dynamic display of the information of the household intelligent equipment without a computer.

Drawings

FIG. 1 is a block diagram of the overall system architecture;

FIG. 2 is a circuit block diagram of the overall module of the system;

FIG. 3 is a block diagram of the components of the voice control module;

FIG. 4 is a block diagram of the components of the data acquisition module;

FIG. 5 is a schematic block diagram of a fire monitoring module circuit;

FIG. 6 is a block diagram of a wireless transmission module;

Detailed Description

The technical solutions of the present invention are further described below with reference to the following examples, but the present invention is not limited thereto, and any modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Example 1

An intelligent home control system based on STM32F103 is mainly characterized by comprising a block diagram shown in figure 1, and mainly comprises an STM32 single-chip microcomputer main control module (1-1), a voice control module (1-2), a fire monitoring module (1-3), a data acquisition module (1-4), a wireless transmission module (1-5), a network communication module (1-6), a human body infrared sensing module (1-7), a TFTLCD display interface (1-8) and household electrical equipment (1-9), wherein the network communication module and the human body infrared sensing module are communicated with an external sensor through a transmission protocol, and a power voltage stabilizing module is carried to realize stable operation of household 220V mains supply access equipment; the voice control module (1-2) is connected with the STM32F103 main control module (1-1) in an SPI (3-8) connection mode, and the audio input (3-1) and audio output (3-2) interfaces of the module are respectively connected with a microphone and a loudspeaker. The data acquisition module (1-4) carries various types of sensor modules according to the home environment, wherein a temperature sensor DS18B20(4-5) is connected with an STM32F103 main control template (1-1) through a DQ pin, a humidity sensor DHT11(4-6) and a human body infrared sensing module (1-7) adopt HC-SR50 to communicate with the STM32F103 main control template (1-1) through a single bus. Smoke concentration and carbon monoxide concentration data acquired by the fire monitoring module (1-3) are used as environmental data for detecting fire, and the singlechip main control module (1-1) sends out a voice alarm function through a microphone of the voice control module (1-2). The network communication module (1-6) selects DM9000 as a network communication chip, can be directly connected with an STM32F103 main control template (1-1) for use, and the working voltage of the network communication module can be 3.3V or 5V. The wireless transmission module (1-5) adopts a TC35I wireless communication system, realizes the connection with the STM32F103 main control module (1-1) through a unique ZIF connector (6-3) with 40 pins, and provides reliable and safe transmission for data, voice, short messages and the like.

Example 2

A module circuit block diagram of an STM32F 103-based intelligent home control system is shown in FIG. 2, and an STM32F103ZET6 master control template (1-1) serves as a master control center of the system. The peripheral circuit (2-2) comprises a CPU reset circuit (2-5), a real-time clock (2-3) and a crystal oscillator circuit (2-4). Two pins of the crystal oscillator are respectively connected with OSC32_ IN and OSC32_ OUT of an STM32F103ZET6 main control template (1-1), a reset circuit (2-5) button is used for resetting the main controller, and secondly, Ethernet communication (2-9) and GSM communication (2-8) functions are added, wherein the Ethernet communication (2-9) adopts a DM9000 network communication chip, a high-speed network controller with a general processor interface can be directly connected with the STM32F103 main control template (1-1) for use, and the working voltage of the high-speed network controller can be 3.3V or 5V. The GSM communication (2-8) adopts a TC35I wireless communication system, and can be respectively connected with the SIM card support and the antenna through the ZIF connector (6-3) and the antenna plug (6-2), so that a user can remotely realize intelligent control on a home system. The expansion circuit of the system comprises a relay control circuit (2-6) and a serial communication circuit (2-7). The relay control circuit (2-6) is connected with the STM32F103 main control template (1-1), and the control range is expanded, and the multi-path circuit can be switched on, switched off and switched on simultaneously. The STM32F103 main control template (1-1) and related modules are mainly debugged through a serial port RS 232.

The fire monitoring module (1-3) mainly adopts the following method as shown in the figure (5): the smoke concentration and carbon monoxide concentration data acquired by MQ-2 are used as environmental data for detecting fire, a multi-sensor fusion technology is adopted, and when the data are in abnormal states, the STM32F103 main control template (1-1) sends out a voice alarm function through a microphone of the voice control module (1-2).

The main method of the voice control module (1-2) as shown in figure (3) is as follows: the LD3320 adopted by the system integrates high-precision A/D (3-3) and D/A (3-4), a DSP (digital signal processor) (3-5) and an FIFO (first in first out) buffer queue (3-6) to realize voice recognition and voice control. The core of the voice control module (1-2) is a DSP processor (3-5) and an FIFO buffer (3-6), a key word list is integrated in the processor, when a user inputs voice (3-1), a voice instruction converted by A/D (3-3) is compared with the key word list, and if matching is successful, prompt information is output through the FIFO (3-6); the FIFOs (3-6) are user programming interfaces, which can be controlled by the user through the SPI interfaces (3-8) or the parallel interfaces (3-7).

Example 3

A data acquisition module (1-4) of an intelligent home control system based on an STM32F103 is shown in a graph (4), and carries a plurality of types of sensor modules according to a home environment, wherein a temperature sensor DS18B20(4-5) is connected with an STM32F103 main control template (1-1) through a DQ pin, and a humidity sensor DHT11(4-4) and the STM32F103 main control template (1-1) are communicated by adopting a simple single bus. The illumination intensity sensor BH1750(4-2) is a digital type environment light intensity sensor of a two-wire serial bus interface, the resolution ratio of the illumination intensity sensor BH1750(4-2) is between 1lx and 65535lx, an ADDR port of the illumination intensity sensor (4-2) is grounded, a clock end SCL and a data end SDA are respectively externally connected with a PB6 port and a PB7 port of a microprocessor STM32F103(1-1), a wind power sensor (4-6) and a noise sensor (4-1) are connected with a universal interface of an STM32F103 main control template (1-1), data such as wind speed, noise and the like in the environment are respectively counted, and corresponding data are dynamically displayed through a TFTLCD display interface (1-8). The concentration of PM2.5 is detected by a PM2.5 sensor GP2Y1014AU (4-3), the internal structure of the sensor is an infrared light emitting tube and a phototransistor which are distributed diagonally, and the concentration value of PM2.5 is calculated according to the voltage value of an output pulse.

A wireless transmission module (1-5) of an intelligent home control system based on STM32F103 is shown in a figure (6), a TC35I wireless communication system is adopted, and the wireless transmission module mainly comprises a GSM baseband processor (6-5), a GSM radio frequency module (6-4), a power supply module (6-6), a ZIF connector (6-3) and an antenna connector (6-2), so that the functions of data, voice transmission, short message service and the like can be quickly and safely realized, the wireless transmission module can work in two frequency bands of GSM900KHZ and 1800KHZ, and the two-way transmission of power connection, instructions, data, voice signals and control signals is realized through the unique ZIF connector (6-3) with 40 pins; the SIM card support and the antenna can be connected respectively through a ZIF connector (6-3) and an antenna connector (6-2). The module provides a standard AT command interface to the user, providing fast, secure transmission of data, voice and short messages.

Claims

1. The STM32F 103-based intelligent home control system is characterized by mainly comprising an STM32 single-chip microcomputer main control module, a voice control module, a fire monitoring module, a data acquisition module, a wireless transmission module, a network communication module, a human body infrared sensing module, a TFTLCD display interface and household electrical equipment, wherein the STM32 single-chip microcomputer main control module, the voice control module, the fire monitoring module, the data acquisition module, the wireless transmission module, the network communication module, the human body infrared sensing module, the TFTLCD display interface and the household electrical equipment are communicated with an external sensor through a transmission protocol, and a power supply voltage; the voice control module is connected with the STM32F103 main control module in an SPI (serial peripheral interface) connection mode, and an audio input interface and an audio output interface of the module are respectively connected with a microphone and a loudspeaker; the data acquisition module carries various sensor modules according to a home environment, wherein a temperature sensor DS18B20 is connected with an STM32F103 main control template through a DQ pin, and a humidity sensor DHT11 and a human body infrared sensing module adopt HC-SR50 to communicate with the STM32F103 main control template through a single bus; smoke concentration and carbon monoxide concentration data acquired by the fire monitoring module are used as environmental data for detecting fire, and the singlechip main control module sends out a voice alarm function through a microphone of the voice control module; the network communication module selects DM9000 as a network communication chip, can be directly connected with an STM32F103 main control template for use, and has working voltage of 3.3V or 5V; the wireless transmission module adopts a TC35I wireless communication system, realizes the connection with the STM32F103 main control module through a unique ZIF connector with 40 pins, and provides reliable and safe transmission for data, voice, short messages and the like.

2. The STM32F 103-based intelligent home control system is characterized in that an STM32F103ZET6 master control template is used as a master control center of the system; the peripheral circuit comprises a CPU reset circuit, a real-time clock and a crystal oscillator circuit; two pins of the crystal oscillator are respectively connected with OSC32_ IN and OSC32_ OUT of an STM32F103ZET6 main control template, a reset circuit button is used for resetting the main controller, and secondly, Ethernet communication and GSM communication functions are added, wherein the Ethernet communication adopts a DM9000 network communication chip, the high-speed network controller with a general processor interface can be directly connected with the STM32F103 main control template for use, and the working voltage can be 3.3V or 5V; the GSM communication adopts a TC35I wireless communication system, and can be respectively connected with an SIM card bracket and an antenna through a ZIF connector and an antenna plug, so that a user can remotely realize intelligent control on a home system; the system comprises an expansion circuit, a control circuit and a serial port communication circuit, wherein the expansion circuit comprises a relay control circuit and a serial port communication circuit; the relay control circuit is connected with the STM32F103 main control template, and the control range is expanded, and multiple circuits can be switched on, switched off and switched on simultaneously; debugging of the STM32F103 main control template and the related modules is mainly performed through a serial port RS 232.

The fire monitoring module mainly comprises the following steps: the smoke concentration and carbon monoxide concentration data acquired by MQ-2 are used as environmental data for detecting fire, a multi-sensor fusion technology is adopted, and when the data are in abnormal states, the singlechip module sends out a voice alarm function through a microphone of the voice control module.

The main method of the voice control module is as follows: the LD3320 adopted by the method integrates high-precision A/D and D/A, a DSP digital signal processor and an FIFO buffer queue to realize voice recognition and voice control; the core of the voice control module is a DSP processor and an FIFO buffer, a key word list is integrated in the processor, when a user inputs voice, a voice instruction subjected to A/D conversion is compared with the key word list, and if matching is successful, prompt information is output through the FIFO; the FIFO is a programming interface for the user, who can control it through the SPI interface or parallel interface pair.

3. The intelligent home control system based on the STM32F103 is characterized in that a plurality of types of sensor modules are carried according to a home environment, wherein a temperature sensor DS18B20 is connected with an STM32F103 main control template through a DQ pin, and a humidity sensor DHT11 and the STM32F103 main control template are communicated by adopting a simple single bus; an illumination intensity sensor BH1750 is a digital type ambient light intensity sensor of a two-wire serial bus interface, the resolution ratio of the digital type ambient light intensity sensor is between 1lx and 65535lx, an ADDR port of the illumination intensity sensor is grounded, a clock end SCL and a data end SDA are respectively externally connected with a PB6 port and a PB7 port of a microprocessor STM32F103, a wind sensor and a noise sensor are connected with a universal interface of a STM32F103 main control template, data such as wind speed, noise and the like in the environment are respectively counted, and corresponding data are dynamically displayed through a TFTLCD display interface; the PM2.5 sensor GP2Y1014AU, whose internal structure is diagonally distributed infrared light emitting tube and photo transistor, detects the concentration of PM2.5 by the voltage value of the output pulse.

4. The STM32F 103-based intelligent home control system is characterized in that a TC35I wireless communication system mainly comprises a GSM baseband processor, a GSM radio frequency module, a power supply module, a ZIF connector and an antenna connector, can quickly and safely realize functions of data and voice transmission, short message service and the like, can work in two frequency bands of GSM900KHZ and 1800KHZ, and realizes bidirectional transmission of power supply connection, instructions, data, voice signals and control signals through the unique 40-pin ZIF connector; the SIM card bracket and the antenna can be connected respectively through a ZIF connector and an antenna connector; the module provides a standard AT command interface to the user, providing fast, secure transmission of data, voice and short messages.