CN108377597A - Current regulating circuit, method and the intelligent domestic system of single firewire switch - Google Patents
Current regulating circuit, method and the intelligent domestic system of single firewire switch Download PDFInfo
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- CN108377597A CN108377597A CN201810307105.XA CN201810307105A CN108377597A CN 108377597 A CN108377597 A CN 108377597A CN 201810307105 A CN201810307105 A CN 201810307105A CN 108377597 A CN108377597 A CN 108377597A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/19—Controlling the light source by remote control via wireless transmission
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of current regulating circuits of single firewire switch, including electricity-fetching module, charge management module, energy-storage units and microprocessor, the electricity-fetching module is connect through the charge management module, energy-storage units with the microprocessor, and firewire is formed into a loop through the electricity-fetching module and load with zero curve；The microprocessor is also connect with the charge management module；The electricity-fetching module, for charging to the energy-storage units when load is switched on or switched off；The energy-storage units, for being the microprocessor power supply；The microprocessor, for sending a control signal to the charge management module according to the flashing state of load；The charge management module, for the electricity-fetching module to be adjusted to the charging current of the energy-storage units according to the control signal, to solve the problems, such as load flicker.The present invention is realized without frequently replacing battery, solves the problems, such as load flicker.
Description
Technical Field
The invention relates to the technical field of switches, in particular to a current regulating circuit and method of a single-live-wire switch and an intelligent home system.
Background
With the rapid development of information technology and network technology and the change and improvement of living ideas of people, home intelligence and household appliance networking become hot topics gradually. The intelligent home is characterized in that various information devices and residential devices are connected through a network, so that a comfortable, safe and convenient informationized living space is constructed, the requirements of life, work, entertainment and communication of people at home are met, and means for security protection, community management and people to know home conditions when going out are provided.
Along with the rapid development of intelligent home, a single-live-wire intelligent switch (only a single live wire enters/exits without a zero line) becomes an upgrading (direct replacement) product of a traditional mechanical wall switch, and the intelligent control of lighting equipment is realized. Moreover, most of domestic and foreign ordinary families are wired through a single live wire, and when the intelligent transformation is realized in the upgrading process, the new intelligent switch is often required to directly replace the old mechanical wall switch, and the new intelligent switch is not required to be wired again in the replacement process. Therefore, the single-live-wire intelligent switch of the single wire system is required to be adopted in designing the novel intelligent wall switch.
The inside microcontroller Module (MCU) that has usually of single live wire intelligence switch, for guaranteeing MCU's normal work, need continuously supply power to it when the switch is opened and is shut off. Because traditional mechanical switch is the live wire entering, and the live wire output, this gets the electricity for intelligent switch and has brought the degree of difficulty, and general intelligent switch needs zero, the live wire power supply just can realize. The single live wire is used for getting electricity on one live wire, and the principle is that a loop is formed by flowing a tiny current (uA level or mA level) on a load (a bulb and the like) to get electricity.
Because the single live wire switch is connected in series to leak a little current at the load to realize getting the electricity, can lead to the scintillation or the problem of little brilliance of some electricity-saving lamps or LED lamps getting the electricity in-process. Although the prior art has a scheme of supplying power to the microprocessor through the energy storage unit to solve the problem of flickering or slight brightness of a light-off load, the battery needs to be frequently replaced, and the user experience is poor.
Disclosure of Invention
The invention mainly aims to provide a current regulating circuit and method of a single-live-wire switch and an intelligent home system, and aims to solve the problem of load flicker without frequently replacing a battery.
In order to achieve the purpose, the current regulating circuit of the single live wire switch comprises a power taking module, a charging management module, an energy storage unit and a microprocessor, wherein the power taking module is connected with the microprocessor through the charging management module and the energy storage unit, and a live wire forms a loop with a zero line through the power taking module and a load; the microprocessor is also connected with the charging management module;
the power taking module is used for charging the energy storage unit when the load is switched on or switched off;
the energy storage unit is used for supplying power to the microprocessor;
the microprocessor is used for sending a control signal to the charging management module according to the flickering condition of the load;
and the charging management module is used for adjusting the charging current of the power taking module to the energy storage unit according to the control signal so as to solve the problem of load flicker.
Preferably, the microprocessor sends a control signal to the charging management module according to a flickering condition of the load, and the method includes:
the microprocessor receives an external flicker instruction and sends the control signal to the charging management module according to the external flicker instruction; or,
and the microprocessor sends the control signal to the charging management module according to an internal detection result.
Preferably, the microprocessor includes a communication unit, the communication unit is connected with the intelligent gateway, and the communication unit is used for receiving an external flashing instruction issued by the intelligent gateway; after a user triggers a flashing instruction on a terminal, the terminal sends the flashing instruction to a cloud server, and the cloud server sends the flashing instruction to the intelligent gateway to generate the external flashing instruction.
Preferably, the charging management module further comprises a current detection module arranged between the load and the power taking module, the current detection module is further connected with the microprocessor, the current detection module is used for detecting current flowing through the load, and when the microprocessor detects that the current flowing through the load is larger than a preset first current threshold value, the microprocessor sends the control signal to the charging management module according to the internal detection result.
Preferably, the current detection module comprises a detection resistor, one end of the detection resistor is connected with the load, and the other end of the detection resistor is connected with the power taking module; the microprocessor is further used for obtaining the voltage difference between the two ends of the detection resistor, dividing the voltage difference between the two ends of the detection resistor by the resistance value of the detection resistor, and calculating to obtain the current flowing through the load.
Preferably, the power taking module comprises a parallel power taking circuit, a first switch circuit and a serial power taking circuit;
the live wire forms a loop with a zero line through the serial electricity taking circuit, the first switch circuit and the load, the serial electricity taking circuit is further connected with the charging management module, and the first switch circuit is further connected with the microprocessor; the live wire also forms a loop with the zero line through the parallel power taking circuit and the load; the parallel electricity taking circuit is also connected with the charging management module;
the microprocessor controls the first switch circuit to be conducted so as to switch on the load, and the serial power taking circuit is used for charging the energy storage unit when the load is switched on;
the microprocessor controls the first switching circuit to be switched off to disconnect the load, and the parallel power taking circuit is used for charging the energy storage unit when the load is disconnected.
Preferably, the charging management module includes a parallel charging management circuit and a serial charging management circuit, the parallel charging management circuit is connected to the parallel power-taking circuit, the serial charging management circuit is connected to the serial power-taking circuit, and the parallel charging management circuit and the serial charging management circuit are further connected to the microprocessor respectively;
when the parallel electricity taking circuit is switched off, the energy storage unit is charged, the microprocessor sends a first control signal to the parallel charge management circuit, and the parallel charge management circuit adjusts the charging current of the parallel electricity taking circuit to the energy storage unit according to the first control signal;
when the serial power taking circuit charges the energy storage unit when a load is switched on, the microprocessor sends a second control signal to the serial charging management circuit, and the serial charging management circuit adjusts the charging current of the serial power taking circuit to the energy storage unit according to the second control signal.
Preferably, the parallel charging management circuit comprises a first variable resistor, and the serial charging management circuit comprises a second variable resistor;
the parallel charging management circuit adjusts the resistance value of the first variable resistor according to the first control signal so as to reduce the charging current of the parallel power taking circuit to the energy storage unit;
the serial charging management circuit adjusts the resistance value of the second variable resistor according to the first control signal so as to reduce the charging current of the serial power taking circuit to the energy storage unit.
Preferably, the parallel power taking circuit comprises an electronic switch circuit and an AC-DC circuit, the electronic switch circuit is connected with the AC-DC circuit, the electronic switch circuit is connected with a load, the electronic switch circuit is further connected with the microprocessor, and the AC-DC circuit is connected with the parallel charging management circuit;
the AC-DC circuit is used for converting alternating current into direct current so as to charge the energy storage unit;
and when the microprocessor detects that the current flowing through the load is greater than a preset second current threshold value, the microprocessor controls the electronic switch circuit to be switched off so as to directly switch off the parallel power taking circuit.
Preferably, the microprocessor is further configured to detect an electric quantity of the energy storage unit when the load is turned off, and when the electric quantity of the energy storage unit is detected to be lower than a first preset electric quantity threshold value, the electronic switch circuit is controlled to be turned on so as to control the parallel power taking circuit to be turned on and charge the energy storage unit.
Preferably, the microprocessor is further configured to detect an electric quantity of the energy storage unit when the load is disconnected, and when the electric quantity of the energy storage unit is detected to be higher than a second preset electric quantity threshold value, the electronic switch circuit is controlled to be turned off so as to control the parallel power taking circuit not to charge the energy storage unit.
Preferably, the parallel power-taking circuit and the serial power-taking circuit are respectively and electrically connected with the microprocessor and used for directly supplying power to the microprocessor.
In addition, in order to achieve the above object, the present invention further provides a current regulation method for a single live wire switch, including the following steps:
step S1, the power taking module charges the energy storage unit when the load is switched on or off;
step S2, the energy storage unit supplies power to the microprocessor to ensure the microprocessor to work normally;
step S3, the microprocessor sends a control signal to the charging management module according to the flickering condition of the load;
and step S4, the charging management module adjusts the charging current of the electricity taking module to the energy storage unit according to the control signal so as to solve the problem of load flicker.
In addition, in order to achieve the above object, the present invention further provides an intelligent home system, which includes a single live wire switch, an intelligent gateway, an intelligent terminal and a load, wherein the single live wire switch includes the current regulating circuit of the single live wire switch;
the load is used for being switched on or switched off according to the control of the single live wire switch;
the intelligent terminal is used for displaying the single-live-wire switch application interface, receiving a flashing instruction triggered by a user on the displayed single-live-wire switch application interface, and uploading the received flashing instruction to the cloud server;
the intelligent gateway is used for acquiring a flashing instruction sent by the cloud server and sending the flashing instruction to the single-live-wire switch;
and the single live wire switch is used for adjusting the current flowing through the load according to the flicker instruction so as to solve the problem of load flicker.
According to the current regulating circuit and method for the single-live-wire switch and the intelligent home system, the power taking module is used for charging the energy storage unit when a load is switched on or off so as to supply power to the microprocessor; when receiving an external flicker instruction in work, the microprocessor sends a control signal to the charging management module according to the external flicker instruction; and the charging management module adjusts the charging current of the electricity taking module to the energy storage unit according to the control signal. Because the energy storage unit can be charged by the power taking module when the load is switched on or switched off, the battery does not need to be frequently replaced, and the power taking module is more convenient. In addition, the charging current of the energy storage unit from the power taking module can be adjusted when an external flicker instruction is received, that is, the current flowing through the load can be adjusted, so that the problem of load flicker is solved under the condition that the battery does not need to be frequently replaced.
Drawings
FIG. 1 is a block diagram of a current regulation circuit for a single hot switch according to a preferred embodiment of the present invention;
FIG. 2 is a circuit diagram of a current regulation circuit of a single hot switch according to a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of an embodiment of a current regulating circuit of a single hot wire switch according to the present invention for receiving an external blinking command;
FIG. 4 is a circuit diagram of a current regulator circuit for a single hot wire switch according to another embodiment of the present invention for receiving an external blinking command;
FIG. 5 is a schematic flow chart illustrating a method for regulating current in a single hot line switch according to an embodiment of the present invention;
FIG. 6 is a block diagram of an embodiment of an intelligent home system of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a block diagram of a current regulating circuit of a single hot switch according to a preferred embodiment of the present invention.
The preferred embodiment of the invention provides a current regulating circuit of a single live wire switch, which comprises a power taking module 1, a charging management module 2, an energy storage unit 3 and a microprocessor 4, wherein the power taking module 1 is connected with the microprocessor 4 through the charging management module 2 and the energy storage unit 3, and a live wire (L) forms a loop with a zero wire (N) through the power taking module 1 and a load 5; the microprocessor 4 is also connected with the charging management module 2; the power taking module 1 is used for charging the energy storage unit 3 when the load 5 is switched on or switched off; the energy storage unit 3 is used for supplying power to the microprocessor 4; the microprocessor 4 is used for receiving an external flicker instruction and sending a control signal to the charging management module 2 according to the external flicker instruction; and the charging management module 2 is used for adjusting the charging current of the power taking module 1 to the energy storage unit 3 according to the control signal so as to solve the problem of flicker of the load 5.
In the embodiment, the power taking module 1 is used for charging the energy storage unit 3 when the load 5 is switched on or switched off so as to supply power to the microprocessor 4; the microprocessor 4 receives an external flashing command during operation, for example, a key is arranged on the switch shell, and when the user finds flashing, the key on the switch is directly triggered to generate the external flashing command. Sending a control signal to the charging management module 2 according to the external flicker instruction; and the charging management module 2 regulates the charging current from the power taking module 1 to the energy storage unit 3 according to the control signal. Because the available electricity taking module 1 charges the energy storage unit 3 when the load 5 is switched on or switched off, the battery does not need to be frequently replaced, and the operation is more convenient. Moreover, the charging current from the power taking module 1 to the energy storage unit 3 can be adjusted when an external flicker instruction is received, that is, the current flowing through the load 5 can be adjusted, so that the problem of flicker of the load 5 is solved without frequently replacing the battery.
Specifically, referring to fig. 2, fig. 2 is a circuit diagram of a current regulating circuit of a single hot switch according to a preferred embodiment of the present invention.
The electricity taking module 1 comprises a parallel electricity taking circuit 11, a first switch circuit 12 and a serial electricity taking circuit 13, a live wire forms a loop with a zero line through the serial electricity taking circuit 13, the first switch circuit 12 and a load 5, the serial electricity taking circuit 13 is also connected with the charging management module 2, and the first switch circuit 12 is also connected with the microprocessor 4; the live wire also forms a loop with the zero line through the parallel power taking circuit 11 and the load 5; the parallel electricity taking circuit 11 is also connected with the charging management module 2; the microprocessor 4 controls the first switch circuit 12 to be conducted to enable the load 5 to be connected, and the serial power taking circuit 13 is used for charging the energy storage unit 3 when the load 5 is connected; the microprocessor 4 controls the first switch circuit 12 to be turned off to disconnect the load 5, and the parallel power taking circuit 11 is used for charging the energy storage unit 3 when the load 5 is disconnected.
Specifically, when a user presses a key on the switch panel, the microprocessor 4 controls the first switch circuit 12 to be turned on or off, the first switch circuit 12 comprises an electronic switch such as a relay, a relay and the like, and the load 5 is turned off; conversely, the load 5 is switched on. The parallel power-taking circuit 11 is a power-taking circuit when the load 5 (such as a bulb) is disconnected, an electronic switch such as a relay is disconnected, and alternating current flows to the load 5 through the parallel power-taking circuit 11. The first switch circuit 12 and the serial power-taking circuit 13 constitute a power-taking circuit when the load 5 is turned on, the first switch circuit 12 is turned on, and alternating current flows to the load 5 through the serial power-taking circuit 13 and the first switch circuit 12. The two parts of power taking circuits can be connected into the charging management module 2, the charging management module 2 charges the energy storage unit 3, and the energy storage unit 3 supplies power to the microprocessor 4 so as to continuously supply power to the microprocessor 4 when the switch is turned on and turned off, thereby ensuring that the microprocessor 4 can normally work in real time. In this embodiment, the energy storage unit 3 is an energy storage device with a long service life, and includes, but is not limited to, a lithium battery, a super capacitor, and the like.
The charging management module 2 comprises a parallel charging management circuit 21 and a serial charging management circuit 22, the parallel charging management circuit 21 is electrically connected with the parallel power-taking circuit 11, the serial charging management circuit 22 is electrically connected with the serial power-taking circuit 13, and the parallel charging management circuit 21 and the serial charging management circuit 22 are also electrically connected with the microprocessor 4 respectively; the parallel charging management circuit 21 comprises a first variable resistor, and the serial charging management circuit 22 comprises a second variable resistor; when the load 5 is disconnected, the parallel power taking circuit 11 charges the energy storage unit 3, and the microprocessor 4 receives an external flicker instruction, the microprocessor sends a first control signal to the parallel charging management circuit 21, and the parallel charging management circuit 21 adjusts the resistance value of the first variable resistor according to the first control signal to reduce the charging current from the parallel power taking circuit 11 to the energy storage unit 3; when the load 5 is connected, the serial power-taking circuit 13 charges the energy storage unit 3, and when the microprocessor 4 receives an external flicker instruction, the microprocessor sends a second control signal to the serial charging management circuit 22, and the serial charging management circuit 22 adjusts the resistance of the second variable resistor according to the second control signal, so as to reduce the charging current of the serial power-taking circuit 13 to the energy storage unit 3.
The parallel electricity taking circuit 11 comprises an electronic switch circuit 111 and an AC-DC circuit 112, the electronic switch circuit 111 is connected with the AC-DC circuit 112, the electronic switch circuit 111 is electrically connected with the load 5, the electronic switch circuit 111 is also electrically connected with the microprocessor 4, and the AC-DC circuit 112 is electrically connected with the parallel charging management circuit 21; the AC-DC circuit 112 is used for converting 220V AC power into 5V DC power to charge the energy storage unit 3; when the microprocessor 4 detects that the current flowing through the load 5 is greater than the preset second current threshold, the electronic switch circuit 111 is controlled to be turned off so as to directly turn off the parallel power-taking circuit 11. In general, under normal conditions, in the process of charging the energy storage unit 3 by the parallel power taking circuit when the load 5 is disconnected, the current flowing through the load 5 does not fluctuate greatly, and if the current flowing through the load 5 suddenly increases under abnormal conditions, the load 5 is likely to be slightly bright or flicker. Therefore, in the present embodiment, the preset second current threshold is set, and when the current flowing through the load 5 is greater than the preset second current threshold, it is determined that a large fluctuation suddenly increases, the electronic switch circuit 111 is controlled to turn off, so as to directly turn off the parallel power-taking circuit 11, and turn off the current flowing through the load 5, thereby avoiding the situation that the load 5 continuously generates a slight light or flickers.
In this embodiment, the electronic switch circuit 111 may be implemented by an MOS transistor, a triode, or the like, the electronic switch circuit 111 is connected to a microprocessor 4(MCU), and the microprocessor 4 controls on/off of the electronic switch circuit 111. The AC-DC circuit 112 may be implemented using an AC-DC power supply chip.
When the load 5 is in an open state and the electronic switch circuit 111 inside the parallel power-taking circuit 11 is closed, the energy storage unit 3 is charged. If the current charged by the energy storage unit 3 is too large, the current flowing through the parallel power taking circuit 11 is also large, and the current flowing through the load 5 is also large, so that the external load 5 (such as a lamp bulb) may be slightly bright or twinkle. When the load 5 is in the on state, the energy storage unit 3 is also charged by the serial power taking circuit 13, and if the charging current of the energy storage unit 3 is too large, the power of the load 5 is insufficient, for example, the lamp is darker than usual or flickers. Therefore, in order to ensure that the external load 5 (such as a bulb) does not appear a little bright or flicker in the parallel power-taking state or the serial power-taking state, i.e. to ensure the normal operation of the external load 5, in this embodiment, the charging current can be adjusted by the microprocessor 4 to ensure that the charging current for the battery is in a certain range, such as uA level or 1-2mA, so as to solve the problem of flicker of the load 5. Specifically, in this embodiment, the microprocessor 4 receives an external flashing instruction, and sends a control signal to the charging management module 2 according to the external flashing instruction; and the charging management module 2 adjusts the charging current of the power taking module 1 to the energy storage unit 3 according to the control signal so as to solve the problem of flicker of the load 5. For example, when the microprocessor 4 receives an external blinking instruction, that is, a situation that the load 5 blinks is detected, if the current state is a parallel power-taking state, the parallel power-taking circuit 11 may be controlled to reduce the charging current, for example, the charging current may be reduced by adjusting the resistance of the first variable resistor in the parallel charging management circuit 21, for example, by increasing the resistance of the first variable resistor, so as to reduce the current flowing through the load 5, so as to solve the problem that the load 5 blinks when the load 5 is disconnected due to a large flowing current. If the current state is the serial power-taking state, the serial power-taking circuit 13 may be controlled to reduce the charging current, for example, the charging current may be reduced by adjusting the resistance of the second variable resistor in the serial charging management circuit 22, for example, by increasing the resistance of the second variable resistor, so as to ensure that the power of the load 5 is not too low, and to solve the problem that the lamp becomes darker or flickers compared with the normal brightness.
Further, when the microprocessor 4 receives an external flash instruction in this embodiment, two optional implementations are included as follows:
in an alternative embodiment, as shown in fig. 3, fig. 3 is a schematic diagram of receiving an external blinking command in an embodiment of a current regulating circuit of a single hot wire switch according to the present invention. The microprocessor 4 comprises a communication unit (not shown in the figure), the communication unit is connected with the intelligent gateway, and the communication unit receives an external flashing instruction issued by the intelligent gateway; the external flashing instruction is generated by the fact that after a user triggers the flashing instruction on the terminal, the terminal sends the flashing instruction to the cloud server, and then the cloud server sends the flashing instruction to the intelligent gateway. The communication unit includes, but is not limited to, Zigbee, bluetooth, WIFI, infrared, and other communication units. The communication unit can establish network connection with the intelligent gateway, and the intelligent gateway establishes network connection with the cloud server through WIFI and the like. The user intelligent terminal is provided with an APP of a single live wire switch as a mobile phone, and the intelligent terminal is connected with the cloud server through a network. For example, the microprocessor 4 may receive a flash instruction from the load 5 through feedback from the user's mobile phone APP. For example, when the bulb flickers, the user selects the load 5 to flick (or the bulb flickers) and the like to trigger the key through the single-live-wire switch APP interface in the mobile phone, the cloud server receives the trigger information of the user and then sends the trigger information to the intelligent gateway through the router, and the intelligent gateway sends the trigger information to the microprocessor 4 of the single-live-wire switch, so that the microprocessor 4 can obtain the trigger information, namely, an external flicking instruction, and can know the flicking condition of the load 5.
In another alternative embodiment, as shown in fig. 4, fig. 4 is a circuit diagram of receiving an external blinking command in another embodiment of the current regulating circuit of the single hot switch of the present invention. In this embodiment, a current detection module 6 may be further disposed between the load 5 and the power taking module 1, the current detection module 6 is further connected to the microprocessor 4, the current detection module 6 is configured to detect a current flowing through the load 5, and when the microprocessor 4 detects that the current flowing through the load 5 is greater than a preset first current threshold, the microprocessor 4 sends a control signal to the charging management module 2. Specifically, the current detection module 6 may include a detection resistor, one end of the detection resistor is connected to the load 5, and the other end of the detection resistor is connected to the power taking module 1. The voltage difference across the sensing resistor is input to the microprocessor 4. The microprocessor 4 can detect the current flowing through the load 5 by calculating the voltage at the two ends of the detection resistor and dividing the voltage at the two ends of the detection resistor by the resistance value of the detection resistor. Normally, the circuit flowing through the load 5 will not fluctuate too much, and if it is suddenly detected that the current flowing through the load 5 suddenly increases, this indicates that the load 5 is slightly bright or flickers. Therefore, when the microprocessor 4 detects that the current flowing through the load 5 is greater than a preset first current threshold (a preset empirical value at which the load 5 is often or more likely to be slightly bright or flickering), it is determined that the external flickering command is detected.
Further, in a normal state, when a user turns on the lamp, the serial power taking circuit 13 is used for taking power, and the energy storage unit 3 is charged through the charging management module 2. When a user turns off the lamp, if the energy storage unit 3 has sufficient electricity, the energy storage unit 3 does not need to be charged through the parallel electricity taking circuit 11. In an embodiment, the microprocessor 4 is further configured to detect an electric quantity of the energy storage unit 3 when the load 5 is turned off, and when the electric quantity of the energy storage unit 3 is detected to be lower than a first preset electric quantity threshold, the electronic switch circuit 111 is controlled to be turned on to control the parallel power taking circuit 11 to be turned on and charge the energy storage unit 3, so that the energy storage unit 3 can normally supply power to the microprocessor 4, and the microprocessor 4 can normally operate.
The microprocessor 4 is further configured to detect the electric quantity of the energy storage unit 3 when the load 5 is disconnected, and when the electric quantity of the energy storage unit 3 is detected to be higher than a second preset electric quantity threshold value, the electronic switch circuit 111 is controlled to be turned off so as to control the parallel power taking circuit 11 not to charge the energy storage unit 3. That is, if the energy storage unit 3 is charged sufficiently, it may not be charged, so as to avoid the micro-flash of the load 5.
Further, the parallel power taking circuit 11 and the serial power taking circuit 13 are respectively electrically connected to the microprocessor 4, and are configured to directly supply power to the microprocessor 4. At this time, the charging management module 2 further includes a switch circuit for turning off the charging management module 2. In one embodiment, the parallel charging management circuit 21 and the serial charging management circuit 22 are respectively provided with a switching circuit, and the switching circuit can be turned off under the control of the CPU.
As shown in fig. 5, fig. 5 is a schematic flowchart of an embodiment of a current regulation method for a single live wire switch of the present invention, where the current regulation method for the single live wire switch includes the following steps:
step S1, the power taking module charges the energy storage unit when the load is switched on or off;
step S2, the energy storage unit supplies power to the microprocessor to ensure the microprocessor to work normally;
step S3, the microprocessor sends a control signal to the charging management module according to the flickering condition of the load;
and step S4, the charging management module adjusts the charging current of the electricity taking module to the energy storage unit according to the control signal so as to solve the problem of load flicker.
In the embodiment, the power taking module is used for charging the energy storage unit when the load is switched on or switched off so as to supply power to the microprocessor; when receiving an external flicker instruction in work, the microprocessor sends a control signal to the charging management module according to the external flicker instruction; and the charging management module adjusts the charging current of the electricity taking module to the energy storage unit according to the control signal. Because the energy storage unit can be charged by the power taking module when the load is switched on or switched off, the battery does not need to be frequently replaced, and the power taking module is more convenient. In addition, the charging current of the energy storage unit from the power taking module can be adjusted when an external flicker instruction is received, that is, the current flowing through the load can be adjusted, so that the problem of load flicker is solved under the condition that the battery does not need to be frequently replaced.
As shown in fig. 6, fig. 6 is a block diagram of an embodiment of an intelligent home system according to the present invention, where the intelligent home system includes a single-live-wire switch 8, an intelligent gateway 9, an intelligent terminal 10, and a load 7, and the load 7 is turned on or off according to the control of the single-live-wire switch 8; the intelligent terminal 10 displays the application interface of the single-live-wire switch 8, receives a flashing instruction triggered by a user on the displayed application interface of the single-live-wire switch, and uploads the received flashing instruction to the cloud server; the intelligent gateway 9 acquires a flashing instruction sent by the cloud server and sends the flashing instruction to the single live wire switch 8; and the single live wire switch 8 regulates the current flowing through the load 7 according to the flicker instruction so as to solve the problem of flicker of the load 7. The single live wire switch 8 comprises the current regulating circuit of the single live wire switch 8; the working principle is as described above, and is not described herein again. In this intelligent home system, single live wire switch 8 accessible Zigbee, bluetooth, WIFI etc. establish network connection with intelligent gateway 9, and intelligent gateway 9 is establishing network connection with the high in the clouds server through WIFI etc.. The user intelligent terminal 10 is provided with an APP of the single live wire switch 8 as a mobile phone, and the intelligent terminal 10 is connected with the cloud server through a network. For example, the microprocessor may receive a flash instruction from the load 7 through feedback from the user's handset APP. For example, when the bulb flickers, the user selects a trigger button such as load flickers (or bulb flickers) through a single-live-wire switch APP interface in the mobile phone, the cloud server receives the trigger information of the user and then sends the trigger information to the intelligent gateway 9 through the router, and the intelligent gateway 9 sends the trigger information to the microprocessor of the single-live-wire switch 8, so that the microprocessor can obtain the trigger information, namely, an external flicking instruction, and can know the flicking condition of the load 7. The single live wire switch 8 can adjust the current flowing through the load 7 according to the flickering instruction so as to solve the problem of flickering of the load 7.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (14)
1. A current regulating circuit of a single live wire switch is characterized by comprising a power taking module, a charging management module, an energy storage unit and a microprocessor, wherein the power taking module is connected with the microprocessor through the charging management module and the energy storage unit, and a live wire forms a loop with a zero line through the power taking module and a load; the microprocessor is also connected with the charging management module;
the power taking module is used for charging the energy storage unit when the load is switched on or switched off;
the energy storage unit is used for supplying power to the microprocessor;
the microprocessor is used for sending a control signal to the charging management module according to the flickering condition of the load;
and the charging management module is used for adjusting the charging current of the power taking module to the energy storage unit according to the control signal so as to solve the problem of load flicker.
2. The current regulator circuit of claim 1, wherein the microprocessor sends a control signal to the charge management module according to a flicker condition of the load, comprising:
the microprocessor receives an external flicker instruction and sends the control signal to the charging management module according to the external flicker instruction; or,
and the microprocessor sends the control signal to the charging management module according to an internal detection result.
3. The current regulation circuit of a single hot switch of claim 2, wherein:
the microprocessor comprises a communication unit, the communication unit is connected with the intelligent gateway and is used for receiving an external flashing instruction issued by the intelligent gateway; after a user triggers a flashing instruction on a terminal, the terminal sends the flashing instruction to a cloud server, and the cloud server sends the flashing instruction to the intelligent gateway to generate the external flashing instruction.
4. The current regulating circuit of a single fire wire switch according to claim 3, further comprising a current detecting module disposed between the load and the power-taking module, wherein the current detecting module is further connected to the microprocessor, the current detecting module is configured to detect a current flowing through the load, and when the microprocessor detects that the current flowing through the load is greater than a preset first current threshold, the microprocessor sends the control signal to the charging management module according to the internal detection result.
5. The current regulating circuit of the single live wire switch according to claim 4, wherein the current detecting module comprises a detecting resistor, one end of the detecting resistor is connected to a load, and the other end of the detecting resistor is connected to the power taking module; the microprocessor is further used for obtaining the voltage difference between the two ends of the detection resistor, dividing the voltage difference between the two ends of the detection resistor by the resistance value of the detection resistor, and calculating to obtain the current flowing through the load.
6. The current regulation circuit of a single fire wire switch of any one of claims 2-5, wherein the power-taking module comprises a parallel power-taking circuit, a first switch circuit and a serial power-taking circuit;
the live wire forms a loop with a zero line through the serial electricity taking circuit, the first switch circuit and the load, the serial electricity taking circuit is further connected with the charging management module, and the first switch circuit is further connected with the microprocessor; the live wire also forms a loop with the zero line through the parallel power taking circuit and the load; the parallel electricity taking circuit is also connected with the charging management module;
the microprocessor controls the first switch circuit to be conducted so as to switch on the load, and the serial power taking circuit is used for charging the energy storage unit when the load is switched on;
the microprocessor controls the first switching circuit to be switched off to disconnect the load, and the parallel power taking circuit is used for charging the energy storage unit when the load is disconnected.
7. The current regulator circuit of claim 6, wherein the charge management module comprises a parallel charge management circuit and a serial charge management circuit, the parallel charge management circuit is connected to the parallel power-taking circuit, the serial charge management circuit is connected to the serial power-taking circuit, and the parallel charge management circuit and the serial charge management circuit are further connected to the microprocessor respectively;
when the parallel electricity taking circuit is switched off, the energy storage unit is charged, the microprocessor sends a first control signal to the parallel charge management circuit, and the parallel charge management circuit adjusts the charging current of the parallel electricity taking circuit to the energy storage unit according to the first control signal;
when the serial power taking circuit charges the energy storage unit when a load is switched on, the microprocessor sends a second control signal to the serial charging management circuit, and the serial charging management circuit adjusts the charging current of the serial power taking circuit to the energy storage unit according to the second control signal.
8. The current regulation circuit of a single hot switch of claim 7, wherein:
the parallel charging management circuit comprises a first variable resistor, and the serial charging management circuit comprises a second variable resistor;
the parallel charging management circuit adjusts the resistance value of the first variable resistor according to the first control signal so as to reduce the charging current of the parallel power taking circuit to the energy storage unit;
the serial charging management circuit adjusts the resistance value of the second variable resistor according to the first control signal so as to reduce the charging current of the serial power taking circuit to the energy storage unit.
9. The current regulating circuit of a single fire wire switch of claim 7, wherein the parallel power taking circuit comprises an electronic switching circuit and an AC-DC circuit, the electronic switching circuit is connected with the AC-DC circuit, the electronic switching circuit is connected with a load, the electronic switching circuit is further connected with the microprocessor, and the AC-DC circuit is connected with the parallel charging management circuit;
the AC-DC circuit is used for converting alternating current into direct current so as to charge the energy storage unit;
and when the microprocessor detects that the current flowing through the load is greater than a preset second current threshold value, the microprocessor controls the electronic switch circuit to be switched off so as to directly switch off the parallel power taking circuit.
10. The circuit of claim 9, wherein the microprocessor is further configured to detect the power of the energy storage unit when the load is off, and control the electronic switch circuit to turn on when the power of the energy storage unit is detected to be lower than a first preset power threshold, so as to control the parallel power-taking circuit to turn on and charge the energy storage unit.
11. The circuit of claim 9, wherein the microprocessor is further configured to detect the amount of power of the energy storage unit when the load is disconnected, and control the electronic switching circuit to turn off when the amount of power of the energy storage unit is detected to be higher than a second predetermined power threshold, so as to control the parallel power-taking circuit not to charge the energy storage unit.
12. The current regulator circuit of claim 6, wherein said parallel power supply circuit and said serial power supply circuit are further electrically connected to said microprocessor for directly powering said microprocessor.
13. A current regulation method of a single live wire switch is characterized by comprising the following steps:
step S1, the power taking module charges the energy storage unit when the load is switched on or off;
step S2, the energy storage unit supplies power to the microprocessor to ensure the microprocessor to work normally;
step S3, the microprocessor sends a control signal to the charging management module according to the flickering condition of the load;
and step S4, the charging management module adjusts the charging current of the electricity taking module to the energy storage unit according to the control signal so as to solve the problem of load flicker.
14. An intelligent home system, comprising a single live wire switch, an intelligent gateway, an intelligent terminal and a load, wherein the single live wire switch comprises a current regulating circuit of the single live wire switch according to any one of claims 1 to 12;
the load is used for being switched on or switched off according to the control of the single live wire switch;
the intelligent terminal is used for displaying the single-live-wire switch application interface, receiving a flashing instruction triggered by a user on the displayed single-live-wire switch application interface, and uploading the received flashing instruction to the cloud server;
the intelligent gateway is used for acquiring a flashing instruction sent by the cloud server and sending the flashing instruction to the single-live-wire switch;
and the single live wire switch is used for adjusting the current flowing through the load according to the flicker instruction so as to solve the problem of load flicker.
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| CN111092411A (en) * | 2019-12-31 | 2020-05-01 | 江苏紫米电子技术有限公司 | Single-fire intelligent switch and electric leakage protection method thereof |
| CN111194132A (en) * | 2020-02-12 | 2020-05-22 | 西安奇妙电子科技有限公司 | Single live wire power-taking circuit and single live wire switch |
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