CN106879151A - Intelligent single live wire switch circuit and control method - Google Patents

Abstract

The invention discloses a single live wire intelligent switch circuit, which solves the problems of flickering or dim light after the lamp is turned off due to too small input current, risk of electric shock, and short service life of the mechanical switch during standby. Single live wire intelligent switch circuit, including power-taking circuit module (2), load detection module (3), relay module (1), Zigbee module (4), button module (5), interface circuit module (6), single live wire intelligent The switch adopts a single live wire power-taking scheme (the device must be connected to a load to work), using a standard 86-box casing. After the device circuit first passes the load detection, it realizes local buttons or remote control commands (zigbee wireless communication) to complete the on-off of the branch circuit Power function, along with the local button to control the power on and off of the branch, the device will send the current status data to the host, which reflects the current power on and off status of each branch, realizing intelligent control.

Description

Intelligent single live wire switch circuit and control method

technical field

The invention relates to a single live wire switch circuit and a control method, in particular to an intelligent single live wire switch circuit and a control method.

Background technique

In daily life, the single live wire lighting switch is generally controlled by a simple mechanical switch, which controls the closing and disconnecting of one live wire, and then controls the turning on and off of the lamp. At present, some lamps in the corridors use capacitive touch switches to control the lighting and extinguishing of the lamps. These two switches have some disadvantages, among which: the mechanical switch has a certain mechanical life, the capacitive touch switch is prone to misoperation, and the anti-interference ability is poor.

At present, the single live wire still has some problems that need to be solved: 1. The single live wire power supply is generally supplied by the power supply circuit and the load (MCU), so the front-end components need to keep running all the time, which will consume current, and Because it is a series circuit, there will be current flowing in the lamps, and the starting current of ordinary LED lamps and incandescent lamps is very small. When the lamp circuit current accumulates to a certain level during standby, some low-power lamps will appear to flicker. , the current common way to solve this problem is to minimize the standby power consumption. 2. In the case of a single live wire, the power supply generally cannot be made into an isolated power supply, which increases the risk of electric shock. At present, the method to solve this problem often adopts the relay conduction method, and uses the main control chip to control the drive chip to control the closing and closing of the relay. Disconnect; 3. In the communication process of smart devices, the traditional control method requires both devices to keep unblocked at all times, which will lead to high power consumption of the devices and poor applicability.

Contents of the invention

The purpose of the present invention is to provide an intelligent single live wire switch circuit that can complete the power on and off function of the branch circuit according to the local button or remote control command Zigbee wireless communication, which solves the problems of short life of the mechanical switch, high risk of electric shock, short life of the lamp, etc. High power consumption, poor applicability and other issues.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: an intelligent single live wire switch circuit, including a power-taking circuit module, a load detection module, a relay module, a Zigbee module, a button module, and an interface circuit module, characterized in that: The power-taking circuit module 2 is connected with the relay module 3; the Zigbee module is connected with the button module; the power-taking circuit module is connected with the Zigbee module; the load detection module is connected with the Zigbee module; the interface circuit module is connected with the Zigbee module connection; the load detection module is connected with the interface circuit module.

A further technical solution is that the power-taking circuit module includes a power supply circuit and a soft-start circuit, the main control module of the power supply circuit is XD-KC024, and the VCC1 terminal of the main control module XD-KC024 is connected to the soft-start circuit The DCin and VIN terminals are connected, and the MOS_D and MOS_G terminals of the XD-KC024 chip of the main control module are connected to the MOS transistors, which are used to adjust the waveform entered by the single live wire.

A further technical solution is that the soft start circuit includes a soft start main control circuit, a hardware watchdog circuit and a start circuit, the main control module of the soft start main control circuit is PI-05V-D4, and the hardware watchdog module The main control chip is IMP809L, the voltage regulator chip of the start-up circuit is S-8521D33MC, and the OUT terminal of the main control module PI-05-D4 is connected to the VIN terminal of the S-8521D33MC for stable output of 3.3V. Voltage, the RESET terminal of the IMP809L is connected to the ON/OFF terminal of the S-8521D33MC, and the EXT of the S-8521D33MC is connected to the gate of the MOS transistor UT2301 for soft start.

A further technical solution is that the load detection module includes a voltage divider circuit and a voltage comparison circuit, the ADC1, ADC2, and ADC3 terminals of the voltage divider circuit are connected to the voltage comparison circuit, and the OUT1, OUT2, and OUT3 of the voltage comparison circuit are connected to the Zigbee module , used to receive the level signal of the detection load circuit, to avoid the switch equipment not working properly due to the increase of power consumption due to misoperation of the key.

A further technical solution is that the Zigbee module is connected to the K1_Ctrl, K1_Ctrl, and K1_Ctrl ends of the main control module XD-KCO24, and the K1+, K1-, K2+, K2-, K3+, K3-end is connected with the relay module.

A further technical solution is that the Zigbee module is connected with the button module for controlling button scanning.

A further technical solution is that the Zigbee module includes a wireless circuit and a communication circuit, the main control chip of the communication module is JN5168, and the JN5168 is connected with the wireless circuit for receiving and sending information.

A control method for controlling a network single live wire switch, comprising the following steps:

Step 1: Send a query data to the gateway in 1 second with a single FireWire, if there is data, send the data;

Step 2: After the single fire switch receives the data transmission command, it executes the command of the gateway, and controls the load device to be disconnected or closed;

Step 3: If the single live wire receives a communication command from the Zigbee module, the I/O port is interrupted to wake up Zigbee, the Zigbee module starts to work, and starts to scan the buttons. If the button is pressed for less than 3 seconds, it will report the state of the relay being closed or disconnected; If you press the button for 3 seconds, you will enter the network; if you press the button for 8 seconds, you will exit the network.

If the gateway does not receive data or the key is pressed for more than 8 seconds, the system will enter the dormant state and wait for the arrival of the next polling cycle.

The present invention is a gateway device. The two commands to control the on and off states of the single fire wire are sent by the gateway. The single fire wire switch sends an inquiry data to the gateway in 1 second. If the gateway has data, it needs to be sent to the single fire wire. switch, the data will be sent out. After receiving the response, the single live wire switch executes the gateway command to power off or control the load circuit; if the gateway has no data to be sent, then the single live wire will not receive the response data, so the single live wire will enter the dormant state.

If the communication information received by the Zigbee module appears in the middle, the I/O port is interrupted to wake up Zigbee, the Zigbee module starts to work, and starts to scan the buttons. If the button is pressed for less than 3 seconds, it will report the state of the relay being closed or disconnected. Enter the network in seconds, and exit the network if the key is pressed for 8 seconds.

Compared with the prior art, the present invention has at least one of the following beneficial effects:

1) The present invention uses the main control module XD-KC024 to cooperate with the main control module PI-05V-D4 for soft start, which can realize sufficient power output and ensure the normal operation of the switchgear;

2) The present invention uses the main control module XD-KC024 to drive the relay, which solves the problem that it was difficult to drive the relay in the past;

3) The present invention uses the Zigbee module to implement remote control commands to complete the power on and off functions of the branches.

Description of drawings

Fig. 1 is the overall design block diagram of the present invention.

Fig. 2 is a schematic diagram of the power supply circuit of the power taking circuit module of the present invention.

Fig. 3 is a block diagram of the power-taking circuit module of the present invention.

Fig. 4 is a block diagram of the soft start circuit of the invention.

Fig. 5 is a schematic diagram of the soft-start circuit of the power-taking circuit module of the present invention.

FIG. 6 is a schematic diagram of a voltage divider circuit of the load detection module of the present invention.

FIG. 7 is a schematic diagram of a voltage comparison circuit of the load detection module of the present invention.

Fig. 8 is a schematic diagram of the relay module of the present invention.

Fig. 9 is a block diagram of the Zigbee module of the present invention.

Fig. 10 is a block diagram of the Zigbee module and peripheral circuit modules of the present invention.

Fig. 11 is a schematic diagram of the button module of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Implementation 1

Figure 1 shows the inventive intelligent single live wire switch circuit and its control method, an intelligent single live wire switch circuit, including a power-taking circuit module 2, a load detection module 3, a relay module 1, a Zigbee module 4, a button module 5, and an interface circuit module 6. It is characterized in that: the power-taking circuit module 2 is connected to the relay module 3; the Zigbee module 4 is connected to the button module 5; the power-taking circuit module is connected to the Zigbee module 4; the load detection module is connected to the Zigbee module 4 is connected; the interface circuit module is connected with the Zigbee module 4; the load detection module 3 is connected with the interface circuit module 6.

As shown in Figures 2 to 5, the power-taking circuit module 2 includes a power supply circuit 2-1 and a soft-start circuit 2-2, and the main control module of the power supply circuit 2-1 is XD-KC024, and the main control module The VCC1 terminal of the XD-KC024 is connected to the DCin and VIN terminals of the soft-start circuit, and the MOS_D and MOS_G terminals of the main control module XD-KC024 chip are connected to the MOS tubes to adjust the waveform of the single live wire.

The soft start circuit 2-2 includes a soft start main control circuit 2-2-1, a hardware watchdog circuit 2-2-2 and a start circuit 2-2-3, and the soft start main control circuit 2-2- The main control module of 1 is PI-05V-D4, the main control chip of the hardware watchdog module 2-2-2 is IMP809L, and the voltage regulator chip of the startup circuit 2-2-3 is S-8521D33MC, so The OUT terminal of the main control module PI-05-D4 is connected to the VIN terminal of the S-8521D33MC to output a stable voltage of 3.3V, the RESET terminal of the IMP809L is connected to the ON/OFF terminal of the S-8521D33MC, the S- The EXT of 8521D33MC is connected with the gate of MOS tube UT2301 for soft start.

In this embodiment, the Zigbee module is added to the intelligent single live wire switch circuit, which can realize wireless communication, and remotely and intelligently complete the on-off of the single live wire; the power-taking circuit module of the intelligent single live wire switch adopts XD-KC024 to cooperate with the PI-05V-D4 Soft start can achieve sufficient power output to ensure the normal operation of the switchgear.

Embodiment 2

Fig. 1 shows the intelligent single live wire switch circuit and control method of the present invention, a kind of intelligent single live wire switch circuit, including power taking circuit module 2, load detection module 3, relay module 1, Zigbee module 4, button module 5, interface circuit Module 6 is characterized in that: the power-taking circuit module 2 is connected to the relay module 3; the Zigbee module 4 is connected to the button module 5; the power-taking circuit module is connected to the Zigbee module 4; the load detection module is connected to the Zigbee The module 4 is connected; the interface circuit module is connected with the Zigbee module 4; the load detection module 3 is connected with the interface circuit module 6.

As shown in Figures 2 to 5, the power-taking circuit module 2 includes a power supply circuit 2-1 and a soft-start circuit 2-2, and the main control module of the power supply circuit 2-1 is XD-KC024, and the main control module The VCC1 terminal of the XD-KC024 is connected to the DCin and VIN terminals of the soft-start circuit, and the MOS_D and MOS_G terminals of the main control module XD-KC024 chip are connected to the MOS tubes to adjust the waveform of the single live wire.

Soft start circuit 2-2 comprises soft start master control circuit 2-2-1, hardware watchdog circuit 2-2-2 and start circuit 2-2-3, and the soft start master control circuit 2-2-1 The main control module is PI-05V-D4, the main control chip of the hardware watchdog module 2-2-2 is IMP809L, the voltage regulator chip of the startup circuit 2-2-3 is S-8521D33MC, the main The OUT terminal of the control module PI-05-D4 is connected to the VIN terminal of the S-8521D33MC to output a stable voltage of 3.3V, the RESET terminal of the IMP809L is connected to the ON/OFF terminal of the S-8521D33MC, the S-8521D33MC’s EXT is connected to the gate of MOS transistor UT2301 for soft start.

As shown in Figures 6 to 11, the load detection module 3 includes a voltage divider circuit 3-1 and a voltage comparison circuit 3-2, and the ADC1, ADC2, and ADC3 terminals of the voltage divider circuit 3-1 are connected to the voltage comparison circuit 3-2 , OUT1, OUT2, and OUT3 of the voltage comparison circuit 3-2 are connected to the Zigbee module 4 for receiving the level signal of the detection load circuit, so as to avoid the switch device from malfunctioning due to increased power consumption due to misoperation of the buttons.

Zigbee module 4 is connected with the K1_Ctrl, K1_Ctrl, K1_Ctrl terminals of the main control module XD-KCO24, and the K1+, K1-, K2+, K2-, K3+, K3- terminals of the main control module XD-KCO24 are connected with the relay module 1 .

As shown in FIGS. 9 to 11 , the Zigbee module 4 is connected with the key module 5 for controlling key scanning.

Described Zigbee module 4 comprises wireless circuit 4-1 and communication circuit 4-2, and the main control chip of described communication module 4-2 is JN5168 chip 7, and described JN5168 chip 7 is connected with wireless circuit 8, is used for receiving and sending information .

A control method for controlling a network single live wire switch, comprising the following steps:

Step 1: Send a query data to the gateway in 1 second with a single FireWire, if there is data, send the data;

Step 2: After the single fire switch receives the data transmission command, it executes the command of the gateway, and controls the load device to be disconnected or closed;

Step 3: If the single live wire receives a communication command from the Zigbee module, the I/O port is interrupted to wake up Zigbee, the Zigbee module starts to work, and starts to scan the buttons. If the button is pressed for less than 3 seconds, it will report the state of the relay being closed or disconnected; If you press the button for 3 seconds, you will enter the network; if you press the button for 8 seconds, you will exit the network.

If the gateway does not receive data or the key is pressed for more than 8 seconds, the system will enter the dormant state and wait for the arrival of the next polling cycle.

This implementation scheme explains in more detail the design of the circuit and control method of the intelligent single live wire switch. This implementation scheme adds the wireless communication circuit of the Zigbee module; The scheme adopts the main control chip JN5168. The chip JN5168 uses a periodic polling communication method to realize the normal communication between the two parties through periodic inquiry, so as to reduce the data delay in the communication process and reduce the power consumption of the device. Complete the remote control of the single fire switch.

The present invention is a gateway device. The two commands to control the on and off states of the single fire wire are sent by the gateway. The single fire wire switch sends an inquiry data to the gateway in 1 second. If the gateway has data, it needs to be sent to the single fire wire. switch, the data will be sent out. After receiving the response, the single live wire switch executes the gateway command to power off or control the load circuit; if the gateway has no data to be sent, then the single live wire will not receive the response data, so the single live wire will enter the dormant state.

If the communication information received by the Zigbee module appears in the middle, the Zigbee module starts to work and starts to scan the buttons. If the button is pressed for less than 3 seconds, it will report the state of the relay closing or disconnecting. If the button is pressed for 3 seconds, it will enter the network. If the button is pressed for 3 seconds, it will enter the network. 8 seconds to exit the network.

After the process is completed, the above process is repeated continuously, and the communication between the two parties is realized periodically, the data delay in the communication process is reduced, the power consumption of the device is reduced, and the remote control of the single live wire switch is finally completed.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it is to be understood that numerous other modifications and implementations can be devised by those skilled in the art which will fall within the scope of the disclosure disclosed in this application. within the scope and spirit of the principles. More specifically, within the scope of the disclosure, drawings and claims of the present application, various modifications and improvements can be made to the components and/or layout of the subject combination layout. In addition to variations and modifications to the component parts and/or layout, other uses will be apparent to those skilled in the art.

Claims (9)

1. An intelligent single live wire switch circuit, including a power-taking circuit module (2), a load detection module (3), a relay module (1), a Zigbee module (4), a button module (5), and an interface circuit module (6) , It is characterized in that: the described power-taking circuit module (2) is connected with the relay module (3); the Zigbee module (2) is connected with the button module (5); the described power-taking circuit module (2) is connected with the Zigbee module ( 4) connection; the load detection module (3) is connected with the Zigbee module (4); the interface circuit module (6) is connected with the Zigbee module (4); the load detection module (3) is connected with the interface circuit module (6) connect. 2. The intelligent single live wire switch circuit according to claim 1, characterized in that: the power-taking circuit module (2) includes a power supply circuit (2-1) and a soft-start circuit (2-2), and the power supply circuit (2-1) The main control module is XD-KC024, the VCC1 terminal of the main control module XD-KC024 is connected to the DCin and VIN terminals of the soft start circuit, the MOS_D terminal and MOS_G terminal of the main control module XD-KC024 chip The terminal is connected to a MOS tube, which is used to adjust the waveform entered by the single live wire. 3. The intelligent single live wire switch circuit according to claim 2, characterized in that: the soft start circuit (2-2) includes a soft start main control circuit (2-2-1), a hardware watchdog circuit (2 -2-2) and start-up circuit (2-2-3), the main control module of described soft start main control circuit (2-2-1) is PI-05V-D4, described hardware watchdog module (2 -2-2) the main control chip is IMP809L, the voltage regulator chip of the startup circuit (2-2-3) is S-8521D33MC, the OUT terminal of the main control module PI-05-D4 is connected to the S- The VIN terminal of the 8521D33MC is connected to output a stable voltage of 3.3V, the RESET terminal of the IMP809L is connected to the ON/OFF terminal of the S-8521D33MC, and the EXT of the S-8521D33MC is connected to the gate of the MOS transistor UT2301 for soft start. 4. The intelligent single live wire switch circuit according to claim 1, characterized in that: the load detection module (3) includes a voltage divider circuit (3-1) and a voltage comparison circuit (3-2), the voltage divider circuit ( 3-1) ADC1, ADC2, and ADC3 terminals are connected to the voltage comparison circuit (3-2), and OUT1, OUT2, OUT3 of the voltage comparison circuit (3-2) are connected to the Zigbee module (4) for receiving and detecting the load circuit Level signal, to avoid switching equipment not working properly due to increased power consumption due to misoperation of keys. 5. The intelligent single live wire switch circuit according to claim 2, the Zigbee module (4) is connected to the K1_Ctrl, K1_Ctrl, and K1_Ctrl terminals of the main control module XD-KCO24, and the K1+ of the main control module XD-KCO24 , K1-, K2+, K2-, K3+, K3- terminals are connected to the relay module (1). 6. The intelligent single live wire switch circuit according to claim 1, characterized in that: the Zigbee module (4) is connected to the button module (5) for controlling button scanning. 7. The intelligent single live wire switch circuit according to claim 2, the Zigbee module (4) includes a wireless circuit (4-1) and a communication circuit (4-2), and the communication module (4-2) The main control chip is a JN5168 chip (7), and the JN5168 chip (7) is connected with a wireless circuit (8) for receiving and sending information. 8. A control method for controlling a network single live wire switch, comprising the following steps: Step 1: Send a query data to the gateway in 1 second with a single FireWire, if there is data, send the data; Step 2: After the single fire switch receives the data transmission command, it executes the command of the gateway, and controls the load device to be disconnected or closed; Step 3: If the single live wire receives a communication command from the Zigbee module, the I/O port is interrupted to wake up Zigbee, the Zigbee module starts to work, and starts to scan the buttons. If the button is pressed for less than 3 seconds, it will report the state of the relay being closed or disconnected; If you press the button for 3 seconds, you will enter the network; if you press the button for 8 seconds, you will exit the network. 9. The intelligent single live wire switch and control method according to claim 8, if the gateway does not receive data or the key is pressed for more than 8 seconds, then the system enters a dormant state and waits for the arrival of the next polling cycle.