CN202083942U - A home appliance manager based on network and SMS dual control - Google Patents

Abstract

A home appliance manager based on network and short message dual control, which relates to the field of remote control technology, is provided with a network and short message control circuit with a single-chip microcomputer PIC18F452 as the core, which is powered by an external DC power supply circuit, and one end of the single-chip microcomputer PIC18F452 communicates with GSM wirelessly The network module is connected to receive and send SMS commands, and the other end of the microcontroller PIC18F452 is connected to the ENC28J60 network controller through the I/O port to transmit network data. The home appliance controller connects the single-chip microcomputer 12F675 through the wireless receiving module to drive the relay circuit, and can control the remote home appliance system through SMS or remote network.

Description

A home appliance manager based on network and SMS dual control

technical field

The utility model relates to the field of remote control technology, in particular to the field of control technology for on-off control of the working power supply of household appliances by using the network or short messages.

Background technique

There are currently two types of home appliance managers:

1. The mobile phone text message control scheme is to connect the single chip microcomputer with the GSM or GPRS module, and send text message control commands through the GSM or GPRS wireless network in the form of mobile phone text messages to control the working status of the remote electrical power supply.

2. Computer network control scheme, the controller is connected to the PC host through the Internet network, and the CGI page embedded in the controller is accessed through the browser on the PC to control the access of various home appliances connected to the controller.

In the above two existing control methods, there is only a separate control method, such as SMS control, which can only obtain textual status information in the form of sending SMS, and the display and control methods are relatively limited. Although network control can intuitively check the working status of remote home appliances and is more convenient to operate, it must be used with a computer and a network, and cannot be checked and controlled anytime and anywhere.

Contents of the invention

The purpose of the utility model is to design a home appliance manager based on network and short message dual control, which can control the remote home appliance system through SMS or remote network, so that users can conveniently understand and control the working status of remote home appliances anytime and anywhere.

The utility model includes a network and short message control circuit with the single-chip microcomputer PIC18F452 as the core, a controller and an alarm information coding circuit with the single-chip microcomputer AT89C2051 as the core, a GSM short message transceiver circuit, a network controller circuit, and a wireless transmission and reception circuit. At least two groups of home appliance controllers composed of a wireless receiving module, a single-chip microcomputer PIC12F675 and a relay; and a DC power supply circuit that provides working power for the above-mentioned circuits, and the DC power supply circuit is provided with a DC VCC output terminal and a DC VCC3.3V output terminal; The serial port of the single-chip microcomputer PIC18F452 is connected to the serial port of the GSM wireless network module, and the Ethernet port of the network controller ENC28J60 is connected with the single-chip microcomputer PIC18F452 through a level converter, and the single-chip microcomputer PIC18F452 control output terminal is connected to the control coding input end of the single-chip microcomputer AT89C2051, The output terminal of the alarm information coding circuit of the single-chip computer AT89C2051 is connected with the alarm signal input terminal of the single-chip computer PIC18F452, the alarm signal output terminal of the single-chip computer PIC18F452 is connected with the audio alarm circuit, the single-chip computer AT89C2051 is connected with the input terminal of the wireless sending circuit, and the output terminal of the single-chip computer AT89C2051 is connected with the wireless receiving circuit The input terminal of the single-chip microcomputer PIC12F675 of each group of household appliance controlled devices is connected to the output terminal of the wireless receiving module, the output port of the single-chip microcomputer PIC12F675 is connected to the input terminal of the drive circuit of the corresponding relay, and the normally open contact of the relay is connected to the AC voltage input.

The utility model is provided with a network and short message control circuit with a single-chip microcomputer PIC18F452 as the core. It is powered by an external DC power supply circuit. One end of the single-chip microcomputer PIC18F452 is connected to the GSM wireless network module through a serial port to receive and send short message commands. The other end of the single-chip microcomputer PIC18F452 is connected to the The I/O port is connected to the ENC28J60 network controller for network data transmission. A group of input and output terminals of the single-chip microcomputer PIC18F452 is connected with the single-chip microcomputer AT89C2051 to realize the coding function of the control command and the audio alarm. The transmission and reception of command information is realized by the wireless transmission and reception module between the microcontroller AT89C2051 and the household appliance controller. The home appliance controller connects the single-chip microcomputer 12F675 through the wireless receiving module to drive the relay circuit, so as to realize the work of controlling the power supply appliance.

The utility model can control the remote home appliance system through the short message or the remote network, so that the user can conveniently understand and control the working status of the remote home appliance anytime and anywhere, and the wireless transmission between the controller and each controlled home appliance , not only saves the trouble of indoor rewiring, but also saves costs, and does not affect the existing indoor layout, providing convenience to users, especially in case of emergencies, the system can also send alarm information to users through the alarm circuit Realize the monitoring of the remote target area on the mobile phone or the network.

The specific connection method can be: the 25 pins of the serial port sending end and the 26 pins of the receiving end of the single-chip microcomputer PIC18F452 are respectively connected to the 4 pins of the sending end and the 3 pins of the receiving end of the GSM wireless network module DXMK, and the 35 pins of the single-chip microcomputer PIC18F452 are connected to the GSM wireless network module DXMK. The starting terminal is 5 pins, the 17, 10, and 23 pins of the microcontroller PIC18F452 are respectively connected to the 2 input terminals and the output terminals of the gate 74HC08, and the 4, 5, and 6 pins of the network control chip ENC28J60 are respectively connected to the 2 input terminals and the 3 groups of input terminals of the gate 74HC08 , Pins 24, 18, 16, and 15 of the single-chip microcomputer PIC18F452 are respectively connected to terminals 7, 8, 9, and 10 of the network control chip ENC28J60, and pins 2 of the single-chip microcomputer PIC18F452 are connected in series with the light-emitting diode Q3 and current-limiting resistor R19 to the DC VCC output terminal. The single-chip microcomputer PIC18F452 One end of the 3-pin is connected in series with the pull-up resistor R4 to the DC VCC output terminal, one end is connected in series with the learning button SF1 to the ground, the 3-pin of the audio alarm module is connected to the DC VCC output terminal, and the 4-pin of the microcontroller PIC18F452 is connected to the 2-pin of the audio alarm module Connection, one end of the 5-pin of the microcontroller PIC18F452 is connected in series with the pull-up resistor R18 and the DC VCC output terminal, and the other end is connected in series with the learning button YP1 and the ground. Pin 13 and pin 14 of PIC18F452 are connected in parallel with crystal oscillator Y2, and then connect crystal oscillator load capacitors C23 and C24 to the ground respectively. Pin 1 of single-chip microcomputer PIC18F452 is connected to ground through reset button S2. Pin 12 and pin 31 of single-chip microcomputer PIC18F452 are respectively grounded. Pins 11 and 32 are respectively connected to the DC VCC output terminal, one end of pin 8 is connected in series with load resistor R20 to the output terminal of DC VCC, one end is connected in series with thermistor RT1 to ground, pin 9 is connected to the middle contact of adjustable resistor R21, and both ends of R21 are respectively connected to Between the DC VCC output terminal and the ground, pins 33, 34, 19, 20, 21, 22, 27, 28, 29, and 30 of the single-chip microcomputer PIC18F452 are used as IO output ports to connect to the input IO ports 6, 11, and 12 of the single-chip microcomputer AT89C2051. , 13, 14, 15, 16, 17, 18, 19 pins, the 6-pin series current limiting resistor R6 of the GSM wireless network module DXMK is connected to the base of the triode Q1, the collector of the triode Q1 is connected in series with the light emitting diode Q4, and the current limiting resistor R5 To the DC VCC3.3V output terminal; connect crystal oscillator Y1 in parallel between pins 23 and 24 of the network control chip ENC28J60, connect the load capacitors C11 and C12 of the crystal oscillator respectively, and then ground, and ground the pin 1 of the network control chip ENC28J60 in series with the filter electrolytic capacitor C10, and the network The 14 pins of the control chip ENC28J60 are connected in series with a pull-down resistor R7 and grounded, and the 2 pins of the network control chip ENC28J60 6, 27 pins are connected in series with current limiting resistors R13, R12 to 10, 12 pins of RJ45 network socket NET1, 12, 13, 16, 17 pins of network control chip ENC28J60 are respectively connected to 6, 4, 3, 1 pins of network transformer 20F001N , pins 2, 11, 18, 21, and 22 of the network control chip ENC28J60 are all grounded, and pins 15, 19, 20, 25, and 28 of the network control chip ENC28J60 are respectively connected to the output terminal of DC VCC3.3V; pins 7 and 28 of the network transformer 20F001N Pins 9, 10, and 12 are respectively connected to pins 6, 3, 2, and 1 of the RJ45 network socket NET1; pins 9, 11, 13, and 14 of the RJ45 network socket NET1 are all connected to the ground; one end of the 9 pins of the microcontroller AT89C2051 is connected in series with a pull-up resistor R22 is connected to the DC VCC output terminal, one end of the learning button DM1 is connected to the ground in series, the 8-pin of the microcontroller AT89C2051 is connected to the ground terminal in series with the current limiting resistor R23 and the light-emitting diode Q5, and the 1-pin of the wireless receiving module WXJS is connected to the DC VCC output terminal , the 2 pins of the wireless receiving module WXJS are connected to the 7 pins of the microcontroller AT89C2051, the 3 pins of the wireless receiving module WXJS are connected to the ground; At the ground terminal, a crystal oscillator Y3 is connected in parallel between pin 4 and pin 5 of the single-chip microcomputer AT89C2051, and a crystal oscillator load capacitor C27 and C28 are respectively connected in series to the ground terminal; pin 1 of the wireless transmission module DXMK is connected to the power supply VCC, and pin 2 of the wireless transmission module DXMK Connected to the ground terminal.

The household appliance controlled device of the utility model is also equipped with two sets of transformers T1, T2, two sets of rectifier bridges D5, D7, four filter electrolytic capacitors C21, C29, C30, C31, a filter ceramic chip capacitor C32, A power supply circuit composed of a filter inductor L2, a 9V regulator tube and a three-terminal voltage regulator 78L05; the two input terminals of the transformer T1 are connected to both ends of the AC input voltage, and the two output terminals of the transformer T1 are connected to the rectifier bridge D5 The two input terminals of the filter electrolytic capacitor C21 are connected in parallel to the two output terminals of the rectifier bridge D1, and the two output terminals of the filter electrolytic capacitor C21 are provided with the output terminals of the low-voltage working power supply VCC2; the two input terminals of the transformer T2 are connected to the AC input The two ends of the voltage are connected, the two output ends of the transformer T2 are connected to the two input ends of the rectifier bridge D7, the filter electrolytic capacitor C29 is connected in parallel with the two output ends of the rectifier bridge D7, and the filter inductor L2 is connected in series with the output end of the rectifier bridge D7 and three The voltage input terminal of the voltage stabilizer 78L05, the 9V regulator tube and the filter electrolytic capacitor C30 are connected to the output terminal of the filter inductor L2 and the output terminal of the rectifier bridge D7, and the filter electrolytic capacitor C31 and the filter ceramic capacitor C32 are connected to the three-terminal stabilizer The voltage output end of the voltage regulator 78L05 and the output end of the rectifier bridge D7, and the two output ends of the filter electrolytic capacitor C31 are provided with the output end of the low-voltage working power supply VCC1.

The household appliance controller of the utility model is provided with a single-chip microcomputer PIC12F675, a relay K1, a button S1, a triode Q8, a rectifying diode D6, a wireless receiving module WXJS2, a buzzer B1 and an external circuit; the GP2 terminal of the single-chip microcomputer 12F675 is connected to a wireless receiving module; A resistor R26 and a capacitor C35 are connected in series with each other, the connection end of the resistor R26 and the capacitor C35 is connected to the power-on reset port of GP3 of the single chip microcomputer 12F675, the other end of the resistor R26 is connected to the output end of the low-voltage working power supply VCC1, and the other end of the capacitor C35 One end is grounded; the GP0 terminal of the MCU 12F675 is connected to the learning code button S1, the memory code status indicator D16 is connected in series with the current limiting resistor R25 and then connected to the GP5 end of the MCU 12F675, and the other end of the memory code status indicator D16 is grounded; alarm when receiving the code One end of the buzzer B1 is grounded, the other end is connected in series with the current limiting resistor 45 and then connected to the GP4 end of the single-chip microcomputer 12F675; the VSS end of the single-chip microcomputer 12F675 is grounded, the VDD terminal of the single-chip microcomputer 12F675 is connected to the output end of the low-voltage working power supply VCC1, and the VSS of the single-chip microcomputer 12F675 The high-frequency filter capacitor C22 of the single-chip power supply is connected between the VDD terminal and the VDD terminal; one terminal of the coil of a relay K1 is connected to the output terminal of the low-voltage operating power supply VCC2, and the other terminal is connected to the collector of the transistor Q8. The base of the transistor Q8 is connected to the The GP1 relay drive output of the microcontroller PIC12F675 is connected, the emitter of the triode Q8 is grounded, the normally open contact of the relay K1 is connected to the external power supply, and the two ends of the coil of the relay K1 are connected in parallel with the rectifier diode D6.

Description of drawings

Fig. 1 is a circuit block diagram of the utility model.

Fig. 2 is the DC power supply circuit diagram of the main controller in the utility model.

Fig. 3 is the main controller circuit diagram in the utility model.

Fig. 4 is a circuit diagram of the DC power supply of the household appliance controlled device in the utility model.

Fig. 5 is a circuit diagram of a household appliance controlled device in the utility model.

Detailed ways

As shown in Figure 1, the utility model is provided with a main controller circuit with the single-chip microcomputer PIC18F452 as the core, a single-chip microcomputer AT89C2051 circuit for encoding the controller and alarm information, a GSM wireless network module for sending and receiving short messages, and a network controller for realizing network control circuit, a wireless sending and receiving module, an audio alarm circuit, and 16 groups of home appliance controlled devices composed of a wireless receiving module, a single-chip microcomputer PIC12F675 and a relay.

The serial port of the microcontroller PIC18F452 is connected to the serial port of the GSM wireless network module. The Ethernet port of the network controller ENC28J60 is connected to the microcontroller PIC18F452 through a level converter. The alarm information encoding circuit output terminal of the single-chip microcomputer PIC18F452 is connected to the alarm signal input terminal, the alarm signal output terminal of the single-chip microcomputer PIC18F452 is connected to the audio alarm circuit, the single-chip microcomputer AT89C2051 is connected to the input terminal of the wireless sending circuit, and the single-chip microcomputer AT89C2051 is connected to the output terminal of the wireless receiving circuit .

The input terminal of the single-chip microcomputer PIC12F675 of each group of household appliance controllers is connected to the output terminal of the wireless receiving module, the output port of the single-chip microcomputer PIC12F675 is connected to the input terminal of the drive circuit of the corresponding relay, and the normally open contact of the relay is connected to the AC voltage input terminal .

The utility model is also provided with a DC power supply circuit that provides working power for each of the above circuits. It is composed of device 78L05 (U1), current limiting resistor R1, light-emitting diode D2, five-terminal voltage regulator LM317T (U2) and adjusting voltage resistors R2 and R3.

The anode of the rectifier diode D1 is connected to one end of the power plug, the filter electrolytic capacitor C1 and filter ceramic capacitor C2 are respectively connected between the cathode of the rectifier diode and the power ground, and the input terminal 1 of the three-terminal regulated power supply 78L05 is connected to the cathode of the rectifier diode D1 , Pin 2 is connected to the ground terminal of the power supply, the filter electrolytic capacitor C3 and the filter ceramic capacitor C4 are respectively connected between the output terminal 3 pin of the three-terminal voltage regulator and the ground of the power supply, and the voltage output by the output terminal of the three-terminal voltage regulator 78L05 After being filtered by the filter capacitor, the low-voltage working power supply of VCC is provided for the subsequent circuit. The current-limiting resistor R1 and the light-emitting diode D2 are connected in series between the output end of the three-terminal voltage regulator and the ground end of the power supply, and the light-emitting diode D2 is a working indicator light of the power supply circuit. The input terminal of the five-terminal voltage regulator is connected to the output terminal of the three-terminal voltage regulator, the adjusting voltage resistor R3 is connected between pin 1 and pin 2 of the five-terminal voltage regulator, and the adjusting voltage resistor R2 is connected to the pin of the five-terminal voltage regulator Between pin 1 and the power ground, resistors R2 and R3 are used to adjust the output voltage of the five-terminal regulator. The filter electrolytic capacitor C5 is connected between pin 2 of the output terminal of the five-terminal voltage regulator and the power ground, and the output voltage of the output terminal of the five-terminal voltage regulator LM317T is filtered by the capacitor to provide a low-voltage power supply voltage of 3.3V for the subsequent circuit.

As shown in Figure 3, the main controller circuit is mainly composed of PIC microcontroller PIC18F452 (U3), microcontroller AT89C2051 (U20), GSM wireless network module DXMK, pull-up resistors R4, R18, R22, R24, learning buttons YP1, SF1, DM1, Current-limiting resistors R5, R6, R12, R13, R16, R19, R23, pull-down resistor R7, filter electrolytic capacitor C10, crystal oscillator Y1, Y2, Y3, light-emitting diodes Q2, Q3, Q4, Q5, 2 input terminals and gate 74HC08 ( U9, U11, U12), crystal oscillator load capacitors C11, C12, C23, C24, C27, C28, reset button S2, network control chip ENC28J60 (U13), network transformer 20F001N (U18), RJ45 network socket NET1, filter ceramic capacitor C25, C26, thermistor RT1, adjustable resistor R21, triode Q1, audio alarm module YPBJ, wireless sending module WXFS and wireless receiving module WXJS, etc.

The 25 pins of the serial port sending end of the single-chip microcomputer PIC18F452 and the 26 pins of the receiving end are respectively connected to the 4 pins of the sending end and the 3 pins of the receiving end of the GSM wireless network module DXMK, and the data command transmission between the single-chip microcomputer PIC18F452 and the GSM wireless network module DXMK is realized through the serial port. Pin 35 is connected to pin 5 of the starting terminal of the GSM wireless network module DXMK. After the system is powered on, in order to make the GSM module enter the working state, a low pulse greater than 100ms must be added to the starting terminal, and the duration of the level drop cannot exceed 1ms. Pins 17, 10, and 23 are respectively connected to the 2 input terminals and the output terminals of the gate 74HC08, and pins 4, 5, and 6 of the network control chip ENC28J60 are respectively connected to the 2 input terminals and the 3 groups of input terminals of the gate 74HC08. Since the single-chip microcomputer PIC18F452 operates at 5V Working environment, ENC28J60 runs in a 3.3V voltage working environment. Here, the 2-input AND gate 74HC08 realizes the level conversion from 3.3V to 5V. Pins 24, 18, 16, and 15 of the microcontroller PIC18F452 are directly connected to pins 7, 8, and 9 of ENC28J60. , 10 terminals, the 2 pins of the single chip microcomputer PIC18F452 are connected in series with the light emitting diode Q3, the current limiting resistor R19 to the power supply VCC, the light emitting diode Q3 is the working indicator light of the audio alarm, showing whether the audio alarm is fortified, the 3 pins of the single chip microcomputer PIC18F452 are connected in series with the pull-up resistor R4 Connect to the power supply VCC, one end of the learning button SF1 is connected in series with the ground, the learning button SF1 is an audio alarm fortification switch, when the button SF1 is pressed, the audio alarm function is turned on, the LED Q3 lights up, and the audio alarm function is turned off when pressed again , the LED turns off. Pin 3 of the audio alarm module is connected to the power supply VCC, pin 4 of the microcontroller PIC18F452 is connected to pin 2 of the audio alarm module, one end of the 5 pin is connected in series with the pull-up resistor R18 and the power supply VCC, one end is connected in series with the learning button YP1 and the ground, and the 6 pin is connected in series Light-emitting diode Q2, current limiting resistor R16 to the power supply VCC, learning button YP1 and light-emitting diode Q2 are the control switch and working indicator light when the audio alarm occurs, respectively. When there is an alarm message, the light-emitting diode Q2 lights up, press the button at this time YP1, the alarm audio stops alarming, and the light-emitting diode Q2 goes out. The crystal oscillator Y2 is connected in parallel between pins 13 and 14 of the single-chip microcomputer PIC18F452, and then the load capacitors C23 and C24 of the crystal oscillator are respectively connected to the ground to provide a 10M oscillation frequency for the single-chip microcomputer. Pin 1 is connected to the ground through the reset button S2, and pins 12 and 31 are grounded respectively. Pins 11 and 32 are respectively connected to power supply VCC, one end of pin 8 is connected in series with load resistor R20 to power supply VCC, one end is connected in series with thermistor RT1 to ground, pin 9 is connected to the middle contact of adjustable resistor R21, and both ends of R21 are respectively connected to power supply VCC and Between the ground, pins 33, 34, 19, 20, 21, 22, 27, 28, 29, and 30 of the single-chip microcomputer PIC18F452 are used as IO output ports to connect to the input IO ports 6, 11, 12, 13, 14, and 15 of the single-chip microcomputer AT89C2051. , 16, 17, 18, 19 feet, the control command output by the single-chip microcomputer PIC18F452 is encoded by the single-chip microcomputer AT89C2051 and the alarm information is output to the single-chip microcomputer PIC18F452. GSM wireless network module DXMK’s 6-pin series current-limiting resistor R6 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected in series with the light-emitting diode Q4, the current-limiting resistor R5 is connected to the power supply VCC3.3, and the emitter of the transistor Q1 is grounded. Control the light-emitting diode LED. The light-emitting diode LED is the working indicator light of the GSM network wireless module DXMK. When the LED is off, it indicates that the GSM module is in the off or sleep state; when the LED is on for 600 ms/600 ms off, it indicates that the SIM card is not inserted or The GSM module is logging in to the network; when the LED is on for 75 ms/off for 3s, it indicates that the GSM module has logged into the network and is in a standby state. Network control chip ENC28J60 connects crystal oscillator Y1 in parallel between pins 23 and 24, connects crystal oscillator load capacitors C11 and C12 respectively, and then grounds. The crystal oscillator provides 25M oscillation frequency for ENC28J60. 1 pin is connected in series with filter electrolytic capacitor C10 and grounded, and 14 pins are connected in series with a pull-down Resistor R7 is connected to the ground, and pins 26 and 27 are connected in series with current-limiting resistors R13 and R12 respectively to pins 10 and 12 of RJ45 network socket NET1 to control the work of the red and green network indicators on RJ45 network socket NET1, 12, 13, 16, Pin 17 is connected to pins 6, 4, 3, and 1 of the network transformer 20F001N, pins 2, 11, 18, 21, and 22 are grounded, and pins 15, 19, 20, 25, and 28 are connected to the power supply VCC3.3. The 7, 9, 10, and 12 pins of the network transformer 20F001N are respectively connected to the 6, 3, 2, and 1 pins of the RJ45 network socket NET1. It mainly transmits data and isolates different levels between different network devices connected by network cables to prevent different levels. Voltage transmission through the network cable may damage the device. Pins 9, 11, 13, and 14 of the RJ45 network socket NET1 are all connected to the ground. One end of the 9-pin AT89C2051 of the single-chip microcomputer is connected in series with the pull-up resistor R22 to the power supply VCC, and one end is connected in series with the learning button DM1 to the ground. The learning button DM1 is responsible for controlling whether the single-chip microcomputer AT89C2051 accepts the external data transmitted by the wireless receiving module WXJS, and the 8-pin series current limiting resistor R23 and light-emitting diode Q5 are connected to the ground terminal. Q5 is the indicator light of the single-chip AT89C2051 receiving the data signal from the wireless receiving module WXJS. The 1 pin of the wireless receiving module is connected to the power supply VCC, and the 2 pin is connected to the 7 pin of the single-chip microcomputer AT89C2051. , 3 feet connected to the ground. One end of pin 1 of the microcontroller AT89C2051 is connected in series with the pull-up resistor R24 to the power supply VCC, and the other end is connected in series with the filter capacitor C26 to the ground terminal. A crystal oscillator Y3 is connected in parallel between pins 4 and 5, and a crystal oscillator load capacitor C27 and C28 are connected in series, respectively, and then connected to the ground terminal. The crystal oscillator provides 12M oscillation frequency for the microcontroller AT89C2051. The 1 pin of the wireless transmitting module DXMK is connected to the power supply VCC, and the 2 pin is connected to the ground terminal, which is mainly responsible for transmitting the SMS control command coded by the single chip microcomputer. The GSM wireless network module in this main controller receives the short message sent by the user's mobile phone and transmits the information to the single-chip microcomputer PIC18F452 through the serial port. Transmit to MCU AT89C2051 for encoding. If it is controlled through a remote network, MCU PIC18F452 stores the CGI interface control information. The remote computer user can control the working status of the remote power supply and home appliances according to the page information in the browser, and can also change the legal status required for the login interface. Information such as user passwords, and store legal information in EEPROM. If it is control command information, the single-chip microcomputer PIC18F452 transmits the control command information transmitted by the remote user to the single-chip microcomputer AT89C2051 for encoding. Both control schemes use 4-way I of the single-chip microcomputer PIC18F452. /O port to control the work of 16 external relays, and the information encoded by the single-chip microcomputer AT89C2051 is sent out through the wireless transmission module WXFS module.

As shown in Figure 4, the power supply part of the home appliance controller circuit is composed of transformers T1, T2, rectifier bridges D5, D7, filter electrolytic capacitors C21, C29, C30, C31, filter ceramic capacitor C32, filter inductor L2, 9V voltage regulator tube and a three-terminal regulator 78L05.

The two input terminals of the transformer T1 are connected to both ends of the AC input voltage, the two output terminals of the transformer T1 are connected to the two input terminals of the rectifier bridge D5, and the filter electrolytic capacitor C21 is connected in parallel to the two output terminals of the rectifier bridge D1, which is the subsequent circuit Provide low voltage working power supply VCC2.

The two input ends of the transformer T2 are connected to both ends of the AC input voltage, the two output ends of the transformer T2 are connected to the two input ends of the rectifier bridge D7, the filter electrolytic capacitor C29 is connected in parallel to the two output ends of the rectifier bridge D7, and the filter inductor L2 The output end of the rectifier bridge D7 is connected in series with the voltage input end of the three-terminal regulator 78L05, the 9V regulator tube and the filter electrolytic capacitor C30 are connected in series at the output end of the filter inductor L2 and the output end of the rectifier bridge D7, the filter electrolytic capacitor C31 and The filter ceramic capacitor C32 is connected to the voltage output end of the three-terminal voltage regulator 78L05 and the output end of the rectifier bridge D7 to provide a low-voltage operating power supply VCC1 for subsequent circuits.

As shown in Figure 5, the home appliance controller circuit is mainly composed of single-chip microcomputer PIC12F675 (U19), relay K1, button S1, transistor Q8, rectifier diode D6, wireless receiving module WXJS2, buzzer B1 and external circuits.

The GP2 terminal of the single-chip microcomputer 12F675 is connected to the wireless receiving module to collect the control signal received from the outside. The single-chip microcomputer uses a built-in 4M crystal oscillator, and R26 and C35 are connected in series to the power-on reset port of the single-chip microcomputer GP3. To store the code of the matching command in the EEPROM of the single-chip microcomputer, D16 is the memory code status indicator light, and the series current limiting resistor R25 is connected to the GP5 terminal of the single-chip microcomputer. The buzzer, the series current limiting resistor is connected to the GP4 end of the single-chip microcomputer. When the single-chip microcomputer receives an external coding signal, the buzzer sends out an alarm sound. C22 is the high-frequency filter capacitor of the single-chip power supply. One end of the coil of the relay K1 is connected to the power supply voltage VCC2. The other end is connected to the collector of the transistor Q8, the base of the transistor Q8 is connected to the GP1 relay drive output terminal of the microcontroller PIC12F675 through the resistor R46, the emitter of the transistor Q8 is grounded, the normally open contact of the relay K1 is connected to the external power supply, and the relay Both ends of the K1 coil are connected in parallel with a rectifier diode D6, which provides a loop for the current in the coil of the relay K1 after the transistor Q8 is cut off, so as to avoid damage to the triode due to excessive induction potential generated by the coil. When the microcontroller receives the corresponding control command, if it is a work command message, the GP1 of the microcontroller PIC12F675 outputs a high level to the base of the transistor Q1 through the resistor R46, the transistor Q1 is turned on, and the coil of the relay K1 on the collector is energized. Open contact closure turns on power to the appliance. Conversely, when receiving the stop working order information, the GP1 of the single-chip microcomputer PIC12F675 outputs a low level, the transistor Q8 is cut off, the relay on the collector loses power, and automatically disconnects the power supply of the home appliance.

Claims (4)

1. A home appliance manager based on network and short message dual control, characterized in that it comprises a network and short message control circuit taking single-chip microcomputer PIC18F452 as core, a controller and alarm information coding circuit taking single-chip microcomputer AT89C2051 as core, GSM short message sending and receiving circuit, The network controller circuit, the wireless sending and receiving circuit, also include at least two groups of home appliance controlled devices composed of a wireless receiving module, a single-chip microcomputer PIC12F675 and a relay; The circuit is provided with a DC VCC output terminal and a DC VCC3.3V output terminal; the serial port of the single-chip microcomputer PIC18F452 is connected to the serial port of the GSM wireless network module, and the Ethernet port of the network controller ENC28J60 is connected with the single-chip microcomputer PIC18F452 through a level converter , the control output terminal of single-chip microcomputer PIC18F452 is connected with the control coding input terminal of single-chip microcomputer AT89C2051, the output terminal of the alarm information coding circuit of single-chip microcomputer AT89C2051 is connected with the alarm signal input terminal of single-chip microcomputer PIC18F452, the alarm signal output terminal of single-chip microcomputer PIC18F452 is connected with audio alarm circuit, single-chip microcomputer AT89C2051 and wireless The input terminal of the sending circuit is connected, and the output terminal of the single-chip microcomputer AT89C2051 is connected with the wireless receiving circuit; the input terminal of the single-chip microcomputer PIC12F675 of each group of household appliance controllers is connected to the output terminal of the wireless receiving module, and the output port of the single-chip microcomputer PIC12F675 is connected to the corresponding relay. The input end of the drive circuit, the normally open contact of the relay is connected to the AC voltage input end. 2. according to claim 1, the home appliance manager based on network and short message dual control is characterized in that the serial port sending end 25 pins and receiving end 26 pins of single-chip microcomputer PIC18F452 are respectively connected to the sending end 4 pins and receiving end of GSM wireless network module DXMK 3 pins, the 35 pins of the single-chip microcomputer PIC18F452 are connected to the starting terminal 5 pins of the GSM wireless network module DXMK, the 17, 10, and 23 pins of the single-chip microcomputer PIC18F452 are respectively connected to the 2 input terminals and the output terminals of the gate 74HC08, and the network control chip ENC28J60 4, 5, The 6 pins are respectively connected to the 2 input terminals of the AND gate 74HC08 and the 3 groups of input terminals. The 24, 18, 16, and 15 pins of the single-chip microcomputer PIC18F452 are respectively connected to the 7, 8, 9, and 10 terminals of the network control chip ENC28J60, and the 2 pins of the single-chip microcomputer PIC18F452 are connected in series to emit light Diode Q3 and current limiting resistor R19 are connected to the DC VCC output terminal, one end of the 3-pin of the microcontroller PIC18F452 is connected in series with the pull-up resistor R4 to the DC VCC output terminal, one end is connected in series with the learning button SF1 to the ground, and the 3-pin of the audio alarm module is connected to the DC VCC Output terminal, the 4-pin of the single-chip microcomputer PIC18F452 is connected with the 2-pin of the audio alarm module, the 5-pin of the single-chip microcomputer PIC18F452 is connected in series with the pull-up resistor R18 and the DC VCC output terminal, and the learning button YP1 is connected in series with the ground, and the 6-pin of the single-chip microcomputer PIC18F452 is connected in series Light-emitting diode Q2 and current limiting resistor R16 are connected to the DC VCC output terminal. The crystal oscillator Y2 is connected in parallel between pins 13 and 14 of the single-chip microcomputer PIC18F452, and then the crystal oscillator load capacitors C23 and C24 are respectively connected to the ground. Pin 1 of the single-chip microcomputer PIC18F452 is connected to the reset button S2. Ground, pins 12 and 31 of the single-chip microcomputer PIC18F452 are grounded respectively, pins 11 and 32 of the single-chip microcomputer PIC18F452 are respectively connected to the DC VCC output terminal, one end of the 8-pin series load resistor R20 is connected to the DC VCC output terminal, one end is connected in series with the thermistor RT1 to ground, and the 9-pin Connect the middle contact of the adjustable resistor R21, the two ends of R21 are respectively connected between the DC VCC output terminal and the ground, the pins 33, 34, 19, 20, 21, 22, 27, 28, 29, and 30 of the microcontroller PIC18F452 are used as IO The output ports are respectively connected to the input IO ports 6, 11, 12, 13, 14, 15, 16, 17, 18, and 19 of the microcontroller AT89C2051, and the 6-pin series current-limiting resistor R6 of the GSM wireless network module DXMK to the base of the transistor Q1 , the collector of the triode Q1 is connected in series with the light-emitting diode Q4 and the current-limiting resistor R5 to the DC VCC3.3V output terminal; the network control chip ENC28J60 is connected in parallel with the crystal oscillator Y1 between the pins 23 and 24 of the network control chip ENC28J60, and then connected to the crystal oscillator load capacitors C11 and C12 respectively, and then grounded. The 1 pin of the control chip ENC28J60 is connected in series with the filter electrolytic capacitor C10 and grounded, and the 14 pin of the network control chip ENC28J60 is connected in series with a pull-down resistor R After 7, it is grounded, the 26 and 27 pins of the network control chip ENC28J60 are connected in series with the current limiting resistors R13 and R12 to the 10 and 12 pins of the RJ45 network socket NET1, and the 12, 13, 16 and 17 pins of the network control chip ENC28J60 are respectively connected to the network transformer 20F001N 6, 4, 3, 1 pins of the network control chip ENC28J60, 2, 11, 18, 21, 22 pins are all grounded, and the 15, 19, 20, 25, 28 pins of the network control chip ENC28J60 are respectively connected to the DC VCC3.3V output The 7, 9, 10, and 12 pins of the network transformer 20F001N are respectively connected to the 6, 3, 2, and 1 pins of the RJ45 network socket NET1; the 9, 11, 13, and 14 pins of the RJ45 network socket NET1 are all connected to the ground; the microcontroller One end of AT89C2051’s 9-pin series pull-up resistor R22 is connected to the DC VCC output terminal, one end is connected in series with the learning button DM1 to the ground, and the 8-pin series current-limiting resistor R23 of the single-chip AT89C2051 and the light-emitting diode Q5 are connected to the ground terminal, and the wireless receiving module WXJS Pin 1 of the wireless receiving module is connected to the DC VCC output terminal, pin 2 of the wireless receiving module WXJS is connected to pin 7 of the single-chip microcomputer AT89C2051, and pin 3 of the wireless receiving module WXJS is connected to the ground; pin 1 of the single-chip microcomputer AT89C2051 is connected in series with the pull-up resistor R24 to the DC VCC At the output terminal, one end is connected in series with the filter capacitor C26 to the ground terminal, a crystal oscillator Y3 is connected in parallel between pin 4 and pin 5 of the microcontroller AT89C2051, and a crystal oscillator load capacitor C27 and C28 are connected in series respectively, and then connected to the ground terminal; pin 1 of the wireless transmission module DXMK is connected to the power supply VCC, pin 2 of the wireless transmitter module DXMK is connected to the ground terminal. 3. According to the home appliance manager based on network and short message dual control according to claim 1, it is characterized in that the home appliance controlled device is also provided with two sets of transformers T1, T2, two sets of rectifier bridges D5, D7, four A power circuit composed of filter electrolytic capacitors C21, C29, C30, C31, a filter ceramic capacitor C32, a filter inductor L2, a 9V regulator tube and a three-terminal regulator 78L05; two input terminals of the transformer T1 It is connected to both ends of the AC input voltage, the two output ends of the transformer T1 are connected to the two input ends of the rectifier bridge D5, the filter electrolytic capacitor C21 is connected in parallel to the two output ends of the rectifier bridge D1, and the two output ends of the filter electrolytic capacitor C21 are set There is a low-voltage working power supply VCC2 output terminal; the two input terminals of the transformer T2 are connected to both ends of the AC input voltage, the two output terminals of the transformer T2 are connected to the two input terminals of the rectifier bridge D7, and the filter electrolytic capacitor C29 is connected in parallel to the rectifier bridge D7 The two output terminals of the filter inductor L2 are connected in series with the output terminal of the rectifier bridge D7 and the voltage input terminal of the three-terminal voltage regulator 78L05, and the 9V regulator tube and the filter electrolytic capacitor C30 are connected in series between the output terminal of the filter inductor L2 and the rectifier bridge D7 The output end of the filter electrolytic capacitor C31 and the filter ceramic capacitor C32 are connected to the voltage output end of the three-terminal voltage regulator 78L05 and the output end of the rectifier bridge D7. The two output ends of the filter electrolytic capacitor C31 are provided with a low-voltage working power supply VCC1 output. 4. The home appliance manager based on network and SMS dual control according to claim 3, characterized in that the home appliance controlled device is equipped with a single-chip microcomputer PIC12F675, a relay K1, a button S1, a transistor Q8, a rectifier diode D6, a wireless receiving module WXJS2, a bee buzzer B1 and external circuit; the GP2 terminal of the single-chip microcomputer PIC12F675 is connected to the wireless receiving module; a resistor R26 and a capacitor C35 are connected in series, and the connecting end of the resistor R26 and the capacitor C35 is connected to the power-on reset port of the GP3 of the single-chip microcomputer PIC12F675 , the other end of the resistor R26 is connected to the output end of the low-voltage working power supply VCC1, and the other end of the capacitor C35 is grounded; the GP0 end of the single-chip microcomputer PIC12F675 is connected to the learning coding button S1, and the memory coding status indicator D16 is connected in series with the current-limiting resistor R25 and then connected to the single-chip microcomputer PIC12F675 The other end of the GP5 end of the memory coding status indicator D16 is grounded; one end of the buzzer B1 that alarms when receiving the code is grounded, and the other end is connected in series with the current limiting resistor 45 and then connected to the GP4 end of the single-chip microcomputer PIC12F675; the VSS end of the single-chip microcomputer PIC12F675 is grounded , the VDD terminal of the single-chip microcomputer PIC12F675 is connected to the output terminal of the low-voltage working power supply VCC1, and the high-frequency filter capacitor C22 of the single-chip power supply is connected between the VSS and VDD terminals of the single-chip microcomputer PIC12F675; one end of the coil of a relay K1 is connected to the output terminal of the low-voltage working power supply VCC2, The other end is connected to the collector of the transistor Q8, the base of the transistor Q8 is connected to the GP1 relay drive output terminal of the microcontroller PIC12F675 through the resistor R46, the emitter of the transistor Q8 is grounded, the normally open contact of the relay K1 is connected to the external power supply, and the relay The two ends of the K1 coil are connected in parallel with a rectifier diode D6.

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