CN116347707A

CN116347707A - Intelligent controller and system

Info

Publication number: CN116347707A
Application number: CN202310283651.5A
Authority: CN
Inventors: 程小科
Original assignee: Wuhan Linptech Co Ltd
Current assignee: Wuhan Linptech Co Ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-06-27

Abstract

The invention provides an intelligent controller and a system, which are suitable for being connected in series in an alternating current loop of a load to control the working state of the load, and comprise the following components: an electronic switch which can be turned on or off to switch the working state of the load; the power taking unit is configured to obtain electric energy under the condition that the electronic switch is turned on or turned off; the communication processing unit is provided with a first state and a second state which are alternately arranged, and performs data interaction in the second state, wherein the power consumption of the first state is smaller than that of the second state; a compensation unit coupled between the power-taking unit and the communication processing unit and configured to: being capable of being replenished with electrical energy in a first state of the communication processing unit to power the communication processing unit in a second state of the communication processing unit; and a current limiter is arranged between the electricity taking unit and the compensation unit and used for limiting the current in the electricity taking unit.

Description

Intelligent controller and system

Technical Field

The invention relates to the technical field of intelligent home furnishing, in particular to an intelligent controller and a system.

Background

Along with the improvement of the living standard of people, the intelligent control of household equipment is more and more important, the traditional mechanical switch cannot adapt to the use of intelligent electrical appliances, and the intelligent switch with the wireless communication module is more and more popular.

In the prior art, one is a zero-live wire switch connected with a load (such as a lamp) in parallel, and the other is a single-live wire switch connected with the load in series, and the latter can directly replace the traditional mechanical switch due to the convenience of installation without rewiring, so that the zero-live wire switch has wider application.

However, when the single-live wire switch receives and transmits signals, a high peak current may be generated in the communication module, so that a micro-lighting/flickering phenomenon is generated in a light-off state.

Disclosure of Invention

An object of the present invention is to provide an intelligent controller and a system, in which the intelligent controller can avoid the influence of the receiving and transmitting signals on the load during the data interaction period of the communication processing unit, and change the running state of the load, such as flickering/micro-lighting of a lamp.

Another object of the present invention is to provide an intelligent controller and a system, wherein a communication processing unit in the intelligent controller is powered by a compensation unit, so that the influence of the communication processing unit on a power taking loop is avoided, and the load carrying capability of the intelligent controller is improved.

The invention further aims to provide an intelligent controller and a system, wherein the intelligent controller can take electricity once in each half period when the electronic switch is turned on, the electricity taking frequency is high, the electric energy is obtained, and the influence on a load is small.

Another object of the present invention is to provide an intelligent controller and system, in which the intelligent controller can rapidly charge the compensation unit when first powered up, shortening the waiting time of first powered up.

It is another object of the present invention to provide an intelligent controller and system wherein the intelligent controller is capable of continuously energizing the compensation unit through the current limiter after power up to maintain the power to the communication processing unit.

To achieve at least one of the above objects, the present invention provides an intelligent controller adapted to be connected in series to an ac power circuit of a load to control an operating state of the load, the intelligent controller comprising:

an electronic switch which can be turned on or off to switch the working state of the load;

the power taking unit is configured to obtain electric energy under the condition that the electronic switch is turned on or turned off;

the communication processing unit is provided with a first state and a second state which are alternately arranged, and performs data interaction in the second state, wherein the power consumption of the first state is smaller than that of the second state;

A compensation unit coupled between the power-taking unit and the communication processing unit and configured to: being capable of being replenished with electrical energy in a first state of the communication processing unit to power the communication processing unit in a second state of the communication processing unit; and a current limiter is arranged between the electricity taking unit and the compensation unit and used for limiting the current in the electricity taking unit.

In an embodiment, a first switch circuit is disposed between the power taking unit and the current limiting unit, and is used for switching on or off a charging loop of the compensation unit, and being switched on when it is determined that the output voltage of the power taking unit reaches a preset value.

In an embodiment, the power taking unit includes a first power taking circuit and a second power taking circuit, the first power taking circuit and the second power taking circuit share an output end, the first switch circuit is electrically connected with the output end, so as to turn off the charging loop when the output voltage of the power taking unit is within a preset value, and turn on the charging loop when the output voltage of the power taking unit reaches the preset value.

In an embodiment, the power taking unit is provided with a first capacitor shared by the first power taking circuit and the second power taking circuit at the shared output end;

The intelligent controller also comprises a first driving circuit for monitoring the output voltage of the first capacitor, and driving the first switching circuit to be conducted when the output voltage of the first capacitor reaches a preset value; and when the output voltage of the first capacitor does not reach a preset value, the first switch circuit is driven to be turned off.

In an embodiment, the second power taking circuit charges the first capacitor through at least one second capacitor, and the capacitance value of the first capacitor is larger than that of the second capacitor;

the second power taking circuit is provided with a power taking stage and a non-power taking stage which are arranged at intervals and is configured to:

in the power taking stage, the first capacitor, the second capacitor and the compensation unit are charged through the alternating current;

and in a non-power-taking stage, the compensation unit is charged through the first capacitor and the second capacitor.

In an embodiment, the power taking unit forms a first charging circuit of the compensation unit through the current limiter, and provides a first current for the compensation unit, wherein the first current is smaller than a maximum value of a current entering the communication processing unit in the second state.

In an embodiment, a second charging circuit is further disposed between the power taking unit and the compensation unit, and is configured to short-circuit the first charging circuit when enabled, and provide a second current greater than the first current to the compensation unit.

In one embodiment, the charging circuit further comprises an enabling circuit electrically connected with the second charging circuit; the communication processing unit is configured to: before power is supplied, enabling the second charging circuit to work through the enabling circuit when the output voltage of the power taking unit reaches a preset value; after being electrified, the enabling circuit is cut off so as to supplement electric energy for the compensation unit through the first charging circuit.

In one embodiment, the flow restrictor comprises an impedance element;

the second charging circuit comprises a power switch; the first switching circuit comprises any one or a combination of at least two devices with switching functions, wherein the devices are composed of MOS tubes, triodes and IGBT tubes.

In an embodiment, the capacitance value of the first capacitor is set to 1000uF, the capacitance value of the second capacitor is set to 470uF, the compensation unit is a super capacitor, and the capacitance value is 0.5F.

To achieve at least one of the above objects, according to a second aspect of the present invention, there is provided an intelligent control system for controlling a load device, the control system comprising:

a remote control device for generating and transmitting a control command; and, a step of, in the first embodiment,

the intelligent controller provided in the first aspect;

The intelligent controller is connected in series to the alternating current loop of the load equipment, and controls the working state of the load equipment based on the control instruction.

In an embodiment, the remote control device comprises at least one of a wireless battery switch, a passive inductive switch, a wall switch with wireless signal transmitting function and a sound box device with voice interaction function. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application, are briefly described below. It is evident that the figures in the following description are only some embodiments of the invention, from which other figures can be obtained without inventive effort for a person skilled in the art.

FIGS. 1-2, 4-5, 8, 10, 12-13 are schematic circuit diagrams of the intelligent controller according to an embodiment of the present invention;

FIG. 3 is a schematic circuit diagram of a first circuit for extracting according to an embodiment of the invention;

FIG. 6 is a schematic circuit diagram of a first charging circuit according to an embodiment of the invention;

FIG. 7 is a schematic diagram of a circuit structure including a first driving circuit, a second switching circuit, a second driving circuit, and an enabling circuit according to an embodiment of the present invention;

FIG. 9a is a schematic circuit diagram of a second power-up control circuit according to an embodiment of the present invention;

FIG. 9b is a schematic circuit diagram of a second circuit for extracting according to an embodiment of the invention

FIG. 11 is a schematic circuit diagram of a second charging circuit according to an embodiment of the invention;

FIG. 14 is a schematic diagram of a circuit structure of a power monitoring circuit according to an embodiment of the invention;

FIG. 15 is a schematic circuit diagram of a power supply circuit of a communication processing unit according to an embodiment of the present invention;

FIG. 16 is a flow chart of a smart control method according to an embodiment of the invention;

FIG. 17 is a schematic diagram of a smart control system in accordance with an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements throughout the different drawings, unless indicated otherwise. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be understood that in the description of all embodiments of the invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The terms "coupled," "connected," and the like should be construed broadly, and may be electrically connected or may communicate with each other, or may be directly connected or may be indirectly connected through intervening mediums to form a linked relationship, such as a communication between two elements or an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-15, an intelligent controller according to the present invention is shown; in addition, the invention also provides an intelligent control method and an intelligent control system based on the intelligent controller, and the following discussion of these and other embodiments refers to the accompanying drawings. However, those skilled in the art will readily appreciate that the detailed description given herein with respect to these figures is for explanatory purposes only and should not be construed as limiting.

Fig. 1 is a schematic circuit diagram of an intelligent controller according to an embodiment of the present invention; the intelligent controller 10 is adapted to be connected in series to an ac circuit of a load 20 to control the operating state of the load 20; by way of example, the load 20 may be any lighting device such as an energy-saving lamp, an LED lamp, an incandescent lamp, etc., and the present invention is not limited in this respect; the operating state may be an operational state (e.g., a light on state) and a non-operational state (e.g., a light off state).

The intelligent controller 10 includes: an electronic switch 102 that can be turned on or off to switch the operating state of the load 20; the electronic switch 102 may be any device or combination of devices capable of realizing circuit on-off by using an electronic circuit and a power electronic device, such as a thyristor, a transistor, a field effect transistor, a silicon controlled rectifier, a relay, and the like, and the invention is not limited in any way with respect to the type of the electronic switch. It will be appreciated that when the electronic switch 102 is on, the load 20 is powered up with high power to enter an operational state, and when the electronic switch 102 is off, the load 20 is powered down with high power to enter a non-operational state, so that the load 20 can be switched between the operational state and the non-operational state by controlling the electronic switch 102 to be on or off. Taking the load 20 as a lamp, when the electronic switch 102 is turned on, the lamp is turned on, when the electronic switch 102 is turned off, the lamp is turned off, and the electronic switch 102 is controlled to be turned on or off, so that the lamp can be turned on or off.

A power taking unit 101 configured to obtain electric energy in a case where the electronic switch 102 is turned on or off;

a communication processing unit 105, wherein the communication processing unit 105 has a first state and a second state which are alternately present, and performs data interaction in the second state, and the power consumption of the first state is smaller than that of the second state;

the data interaction may include a state where the communication processing unit 105 has signal interaction in transmitting signals to other devices (such as other controllers, etc.), receiving signals transmitted from external devices, and controlling on/off of the electronic switch 102. Further, the power consumption of the first state being smaller than the power consumption of the second state may be understood as the average power consumption of the first state being smaller than the average power consumption of the second state, or the maximum power consumption of the first state being smaller than the maximum power consumption of the second state; in an example, the communication processing unit 105 enters a standby mode with low power consumption in the first state, so that the communication processing unit 105 has low power consumption (for example, 2-3 mA) in the first state, and then enters a second state when external transmission or reception of signals is required, a peak current (for example, 30-40 mA) which is several times or more higher than that in the first state is generated during the signal receiving/transmitting period of the second state, and the communication processing unit 105 is switched to the first state again after the transmission is completed.

A compensation unit 104 coupled between the power taking unit 101 and the communication processing unit 105, and configured to: being capable of being replenished with electrical energy in a first state of the communication processing unit 105 to power the communication processing unit 105 in a second state of the communication processing unit 105; and a current limiter 103 is arranged between the power taking unit 101 and the compensation unit 104, and is used for limiting the current in the power taking unit 101.

It is noted that in some embodiments, the compensation unit 104 not only powers the communication processing unit 105 in the second state of the communication processing unit 105, but may power the communication processing unit 105 as desired throughout the operation of the communication processing unit 105. When the communication processing unit 105 cannot obtain enough electric energy from the power taking unit 101, the compensation unit 104 supplies energy to the communication processing unit 105 so as to support the normal operation of the communication processing unit 105. In one example, in the lamp on state, during non-powered periods, the communication processing unit 105 is fully powered by the compensation unit 104 to maintain its normal operation (including the first state and the second state). Likewise, the compensation unit 104 is not only supplied with power when the communication processing unit 105 is in the first state, but it may be supplied with power during the entire operation of the communication processing unit 105. When the energy in the compensation unit 104 is consumed and the power take-off unit 101 is in the power take-off loop in series with the load 20, the compensation unit 104 can be replenished with electric energy by the current in the power take-off unit 101 to keep enough energy stored in the compensation unit 104.

Thus far, based on the intelligent controller provided in the above technical solution, during the first state of the communication processing unit 105, the compensation unit 104 stores the electric energy obtained by the power taking unit 101 to supply the electric energy to the communication processing unit 105 during the second state, so as to provide the electric current required during the signal transceiving period, and after the transceiving is finished, the power taking unit 101 supplements the consumed electric energy in the compensation unit 104 through the current limiter 103, so as to maintain the energy in the compensation unit 104. The current limiting part 103 is used for limiting the current entering the compensation unit 104, when the compensation unit 104 consumes a large amount of electric energy, the electricity taking unit 101 still supplements energy with smaller current under the action of the current limiting part 103, so that the current flowing through the lamp in the closed state is limited, and the problem of flickering/micro-lighting of the lamp caused by transmitting/receiving signals in the closed state is avoided. The load 20 can be prevented from being affected by the peak current generated due to the transceiving signal during the data interaction of the communication processing unit 105.

As shown in fig. 2, in one embodiment, the power taking unit 101 includes a first power taking circuit 1011 and a second power taking circuit 1012; the electronic switch 102 and the first power extraction circuit 1011 can be alternatively connected in series with the load 20 based on the on or off state of the electronic switch 102; the second power-taking circuit 1012 is connected in series with the electronic switch 102, so that the second power-taking circuit 1012 is connected in series with the load 20 to obtain electric energy when the electronic switch 102 is turned on, and the second power-taking circuit 1012 is turned off and the first power-taking circuit 1011 obtains electric energy when the electronic switch 102 is turned off.

When the electronic switch 102 is turned off, the first power taking circuit 1011 takes electric energy from a series loop formed with the load 20; when the electronic switch 102 is turned on, the first power taking circuit 1011 is short-circuited by the electronic switch 102, and the second power taking circuit 1012 forms a series loop with the electronic switch 102 and the load 20; the first power taking circuit 1011 and the second power taking circuit 1012 may be any circuit structure, for example, may be a circuit structure including a silicon controlled rectifier/switch, or may be a voltage adjusting circuit such as a BUCK, BOOST, flyback converter, etc., and the invention does not limit the circuit structure of the power taking circuit.

FIG. 3 is a schematic circuit diagram of a first power supply circuit according to an embodiment; in this embodiment, the first power-taking circuit is an isolated flyback topology converter.

As shown in fig. 1-2, in one embodiment, the power taking unit 101 forms a first charging circuit of the compensation unit 104 through the current limiter 103, and provides a first current to the compensation unit 104, where the first current is less than a maximum value of a current entering the communication processing unit 105 in the second state.

Wherein, the maximum value of the current entering the communication processing unit 105 in the second state can be understood as the maximum current required by the communication processing unit 105 during the data interaction, such as the peak value of the emission current during the signal emission, and the power of the communication processing unit 105 during the signal receiving and transmitting is larger, such as the emission current is usually above 10mA, even can reach 30 mA-40 mA, or even higher when the communication processing unit 105 communicates based on the WiFi protocol; one end of the current limiter 103 is connected with the power taking unit 101, and the other end is connected with the compensation unit 104, wherein the magnitude of the first current provided by the power taking unit 101 for the compensation unit 104 through the current limiter 103 is equal to the ratio of the voltage difference (namely the difference between the output voltage of the power taking unit and the output voltage of the compensation unit) at two ends of the current limiter 103 to the impedance of the current limiter 103; the voltage and the impedance of the two ends of the current limiting 103 part are reasonably set, so that the first current can be controlled to be smaller than the peak value of the emission current, and the flickering phenomenon of the lamp is improved. Wherein the voltage across the current limiter 103 and its impedance can be set by those skilled in the art in combination with the actual circuit parameters.

In one embodiment, a first switch circuit 106 is disposed between the power taking unit 101 and the current limiter 103, and is used for turning on or off a charging loop of the compensation unit 104, and being turned on when it is determined that the output voltage of the power taking unit 101 reaches a preset value. As shown in fig. 4, one end of the current limiter 103 is connected to the power taking unit 101, the other end is connected to the compensation unit 104, and when the output voltage of the power taking unit 101 reaches a preset value, the first switch circuit 106 is turned on to charge the compensation unit 104, so that the power taking unit can reach a relatively stable state before charging the compensation unit 104, and the problem that the input end potential of the second power taking circuit is continuously pulled down due to the charging of the compensation unit 104 in the second power taking circuit working state, thereby causing the circuit to be dead can be effectively avoided.

In one embodiment, the first power taking circuit 1011 and the second power taking circuit 1012 share an output terminal, and the first switch circuit 106 is electrically connected to the output terminal, so as to turn off the charging circuit when the output voltage of the power taking unit 101 is within a preset value, and turn on the charging circuit when the output voltage of the power taking unit 101 reaches the preset value. Further, as shown in fig. 5, the power-taking unit 101 is provided with a first capacitor C3 shared by the first power-taking circuit 1011 and the second power-taking circuit 1012 at the common output terminal; the intelligent controller 10 further includes a first driving circuit 107, configured to monitor an output voltage of the first capacitor C3, and drive the first switching circuit 106 to be turned on when the output voltage of the first capacitor C3 reaches a preset value; the first switch circuit 106 is driven to turn off when the output voltage of the first capacitor C3 does not reach a preset value.

In an embodiment, the current limiter 103 includes an impedance element, and uses impedance characteristics to limit the current in the first charging circuit, and the first switching circuit 106 includes any one or a combination of at least two devices with switching functions, including a MOS transistor, a triode, and an IGBT transistor. FIG. 6 is a schematic diagram showing a specific circuit configuration of the first charging circuit; the first switch circuit 106 includes a PMOS Q1, the compensation unit 104 includes a capacitor C1, and the current limiter 103 includes a resistor R1; specifically, after being connected in series with a resistor R1, a PMOS tube Q1 is connected in series with a capacitor C1 and grounded, an anode of a diode D1 is connected to an output terminal VON of the second power taking circuit 1012, an anode of a diode D2 is connected to an output terminal VOFF of the first power taking circuit 1011, cathodes of D1 and D2 are commonly connected to a drain electrode of Q1, a capacitor C3 is connected in parallel between the drain electrode of Q1 and ground, and a resistor R2 is connected in parallel between the gate electrode and two ends of the drain electrode of Q1; the capacitor C1 supplies power to the electronic switch 102 through the diode D3, the positive electrode of the diode D3 is connected to the capacitor C1, the negative electrode is connected to the power supply terminal v_relay of the electronic switch 102, and the capacitor C2 is grounded. The workflow of the circuit is as follows:

when power is taken through the first power taking circuit 1011, the output end VOFF of the first power taking circuit 1011 charges the capacitor C3 through the diode D2, and the potential of the output end Vin is gradually increased along with the voltage VOFF of the output end of the first power taking circuit 1011; when power is taken through the second power taking circuit, the output end VON of the second power taking circuit 1012 charges the capacitor C3 through the diode D1, and the potential of Vin is gradually increased along with the voltage of the output end VON of the second power taking circuit 1012;

When the potential of Vin reaches a preset value, CTRL1 outputs a high potential, Q1 is turned off, and the potential of Vin continuously rises along with continuous charging of a capacitor C3;

when the potential of Vin reaches a preset value, CTRL1 is triggered to output a low potential, Q1 is conducted, and Vin charges a capacitor C1 through a resistor R1;

fig. 7 is a schematic circuit diagram of a circuit structure of the first driving circuit 107 in an embodiment, and the control end CTRL1 of Q1 is controlled by Vin through the first driving circuit 107; wherein U2 is a voltage monitoring chip; the input end of the voltage monitoring chip U2 is connected with Vin through a series resistor R4, and the output end is grounded through a series connected voltage dividing resistor R5 and a series connected voltage dividing resistor R6; the collector of the triode P1 is connected with the base of the triode P2 and is connected with one end of the resistor R6 far away from the ground, the base of the triode P1 is grounded through the series resistor R8, and the emitters of the triode P1 and the triode P2 are respectively grounded; the collector of the transistor P2 outputs the control signal CTRL1 through the series resistor R7. The working process of the circuit is as follows:

when the input end of the voltage monitoring chip U2 monitors that the voltage of Vin reaches a preset value, the output end VOUT2 outputs a high level, the high level triode P2 of VOUT2 is conducted, and as the emitter of P2 is grounded, CTRL1 outputs a low level to trigger the PMOS tube Q1 to be conducted;

On the contrary, when the input end of the voltage monitoring chip U2 monitors that the voltage of Vin is smaller than the preset value, the output end VOUT2 outputs a low level, and at this time, the triode P2 is turned off, and since the collector of P2 is connected with Vin through the resistor R2, there is almost no voltage difference between the gate and the source of Q1, so that the PMOS transistor Q1 is turned off.

In one embodiment, as shown in fig. 8, the second power-taking circuit 1012 charges the first capacitor C3 through at least one second capacitor C10, and the capacitance of the first capacitor C3 is larger than that of the second capacitor C10; the second power taking circuit is provided with a power taking stage and a non-power taking stage which are arranged at intervals and is configured to: in the power-taking stage, the first capacitor C3, the second capacitor C10 and the compensation unit 104 are charged by the alternating current; during the non-powered phase, the compensation unit 104 is charged by the first capacitor C3 and the second capacitor C10.

Further, the capacitance values of the first capacitor C3 and the second capacitor C10 are set to [10uF to 6800uF ]. When the capacitance of the first capacitor C3 and the second capacitor C10 is smaller than 10uF, the voltages at the output end of the power taking unit and the output end of the second power taking circuit may not be stabilized, so that the second power taking circuit may not be able to timely supplement energy for the compensation unit 104; when the capacity exceeds 6800uF, the charging time of the compensation unit 104 may be delayed due to the excessive capacity, or the power-taking time of the second power-taking circuit may be increased, so that the lamp may flash. Therefore, in this embodiment, a preferred value is given through experiments: the capacitance value of the first capacitor C3 is set to 1000uF, and the capacitance value of the second capacitor C10 is set to 470uF.

A specific circuit schematic of a second power-taking circuit is shown in fig. 9a and 9 b. It can be seen that, in this embodiment, the switching circuit formed by the switching transistors Q3 and Q4 is used to realize the circuit power-off in the on state of the electronic switch 102, where the electronic switch K may be, for example, a dual-coil magnetic latching relay. Wherein the compensation unit 104 comprises a capacitor C1 and the current limiter 103 comprises a resistor R1.

The control of the first power-taking time is realized by controlling the on time of the switching transistors Q3 and Q4, wherein U6 is a circuit structure capable of providing a reference voltage, which is not limited in the present invention, and in this embodiment, U6 is a linear voltage stabilizing device; u7 is an operational amplifier, the positive pole +IN of U7 is connected with the input voltage VIN_ON of the first circuit 1011 through a voltage stabilizing tube D12, the negative pole-IN is connected with a reference voltage (the reference voltage is provided by the output end of U6 here) through a resistor R30, and the output end OUT5 outputs high and low level according to the voltage difference of the positive pole and the negative pole; d12 is a regulator tube, and R30, R31, and R32 are voltage dividing resistors of a reference voltage. The working process of the circuit is as follows:

when the first power taking circuit 1011 is operated, the VON potential is low, and the second power taking control circuit 1012 is not operated;

switching tubes Q3 and Q4 of the second power-taking circuit 1012 are turned off, the voltage of VON_IN rises, the voltage of the capacitor C10 enables the VON potential to rise rapidly and stably, and U6 and U7 work stably during power-taking;

When the voltage of the voltage stabilizing tube D12 is broken down and the voltage stabilizing tube D12 is broken down (for example, 3V), the voltage stabilizing tube D12 is charged by the voltage stabilizing tube D, the input voltage of the positive electrode +IN of the U7 is continuously increased, at the moment, the switching tubes Q3 and Q4 are turned off, the CTRL3 is IN a low level, the switching tube Q5 is turned off, the voltage of the negative electrode-IN of the U7 is the voltage on the voltage dividing resistors R31 and R32, and the voltage is the first reference voltage;

when the positive +IN input voltage is higher than the first reference voltage, OUT5 (CTRL 3) outputs a high level, the switching tubes Q3 and Q4 are conducted, the power-taking stage is finished, the non-power-taking stage is entered, and the VON_IN voltage starts to drop;

after OUT5 (CTRL 3) outputs a high level, when the switching tube Q5 is turned on after the high level is divided by the resistor R28 and the resistor R29, both ends of the divided voltage R32 are grounded, and at this time, the voltage of the negative electrode-IN of U7 is the voltage on the divided resistor R31 and is the second reference voltage;

when the voltage of VON_IN is reduced to be smaller than the second reference voltage, OUT5 (CTRL 3) outputs a low level, the switching tubes Q3 and Q4 are turned off, the non-power-taking phase is ended, the power-taking phase is started again, and the cycle is performed;

wherein the first reference voltage is [ (r31+r32)/(r30+r31+r32) ], VOUT 4;

the second reference voltage is [ R31/(r30+r31) ].

When the electronic switch K is turned on and CTRL3 outputs a low-level signal, the switching tubes Q3 and Q4 are turned off, and the period is in a power-taking stage; in the positive half period, a second power-taking loop 1012 is formed by a live wire L, a fuse F, a diode D7, a diode D9, a second capacitor C10, ground, a parasitic diode of a switching tube Q4, an electronic switch K, a load L1 and a zero line N; in the negative half period, a second power taking loop 1012 is formed by a zero line N, a load L1, an electronic switch K, a diode D8, a diode D9, a second capacitor C10, ground, a parasitic diode of a switching tube Q3, a fuse F and a fire wire L;

The second power taking circuit 1012 can take power in the positive half-wave and the negative half-wave of the alternating current respectively, and store the electric energy into the first capacitor C3 and the second capacitor C10, compared with a circuit taking power once in one period, the power taking frequency is high, and more electric energy is obtained; the second capacitor C10 has a smaller capacitance than the first capacitor C3, and is further used for stabilizing the voltage at the output terminal VON of the second circuit 1012.

After starting to take power, the second capacitor C10 is charged first, the voltage of the output terminal VON of the second power taking circuit 1012 increases gradually, and when the voltage VON is slightly higher than the output terminal Vin of the power taking unit (for example, the voltage difference is greater than the diode conduction voltage drop), the diode D1 is turned on (see fig. 6), and the second power taking circuit 1012 charges the first capacitor C3; at this time, the second power taking circuit 1012 charges the second capacitor C10 and the first capacitor C3; the second capacitor C10 is used for stabilizing the voltage of the output terminal VON of the second power taking circuit 1012, and its capacitance is smaller than that of the first capacitor C3; the time for pulling the Vin potential down is reduced, and the charging time of the first capacitor C3 is ensured, so that the power-taking time of the second power-taking circuit is reduced, and the problem of flickering/darkening of the lamp possibly caused by the power-taking time process is avoided;

When Vin reaches a preset value, the switching tube Q1 is turned on, the capacitor C1 is coupled to the second power-taking circuit 1012, and the second power-taking circuit 1012 charges the second capacitor C10, the first capacitor C3, and the capacitor C1;

when CTRL3 outputs a high-level signal, the switching tubes Q3 and Q4 are conducted, the second power-taking loop is bypassed by the switching tubes Q3 and Q4, and the circuit is in a non-power-taking stage; during the positive half period, a path is formed by a live wire L, a fuse F, switching tubes Q3 and Q4, an electronic switch K, a load L1 and a zero line N, and normal power is supplied to the load; in the negative half period, a path is formed by a zero line N, a load L1, an electronic switch K, switching tubes Q3 and Q4, a fuse F and a fire wire L, and normal power is supplied to the load; in the non-power-taking stage, the energy stored by the capacitor C1 supplies power to the communication processing unit, so that the normal operation of the communication processing unit, such as standby, transceiving, relay action driving and the like, is maintained. During the non-power-on period, the first capacitor C3 stabilizes the potential of Vin relatively, and if the potential of Vin still reaches the preset value, the switching tube Q1 still remains in the on state, and after the electric quantity in the capacitor C1 is consumed, the second capacitor C10 and the first capacitor C3 continue to charge the capacitor C1 through the resistor R1 so as to supplement the consumed energy.

Therefore, the first capacitor C3 and the second capacitor C10 can still supplement energy to the compensation unit through the electric energy stored in the C3 and the C10 at the non-power-taking stage of the second power-taking circuit, so as to further reduce the voltage difference between two ends of the current limiter, thereby limiting the current of the power-taking unit and avoiding flickering of the lamp.

In addition, the compensation unit needs to be charged after the first power-on, and the communication processing unit can be powered after enough electric energy is stored in the compensation unit. The inventor finds that when the capacity of the compensation unit is large (such as a faraday-level capacitor), during the actual working process of the circuit, the residual electric quantity in the compensation unit is small due to the fact that the voltage of the current limiter near one end of the compensation unit is low (theoretically 0V and possibly slightly higher than 0V in practice), the voltage difference at two ends of the current limiter is relatively large, so that the current in the power-taking unit is relatively large (mA level), and the lamp flashes; meanwhile, because the capacity of the compensation unit is larger, a longer charging time is needed when the electricity taking current passing through the current limiting part is charged, so that the lamp flickers for a long time when being electrified for the first time. Therefore, in view of this technical problem, in the embodiment shown in fig. 10, a second charging circuit 108 is further disposed between the power taking unit 101 and the compensation unit 104, and is configured to short-circuit the first charging circuit when enabled, and provide a second current larger than the first current to the compensation unit 104. Furthermore, in the embodiment, the compensation unit is charged by the larger second current, so that the compensation unit can be filled quickly, long-time flickering of the lamp during the first power-on is avoided, meanwhile, the communication control unit can be enabled to enter the working state as soon as possible, and the initialization time of the intelligent controller is shortened.

In one embodiment, the second charging circuit 108 includes a power switch, and the compensation unit is rapidly charged by using the characteristic that the power switch can output a large current. A schematic diagram of a specific circuit structure of the second charging circuit is shown in fig. 11; wherein the resistor R1 forms the first charging circuit, the power tube U1 forms the second charging circuit, and the first charging circuit, the second charging circuit, and the compensation unit are configured to short-circuit the first charging circuit when the second charging circuit is turned on, so that the first charging circuit and the second charging circuit are alternatively turned on the compensation unit. Specifically, as shown in fig. 11, the first switching circuit includes a PMOS transistor, the compensation unit includes a capacitor C1, the current limiter includes a resistor R1, the second charging circuit includes a power switch U1, and the power switch U1 is connected in parallel to two ends of the resistor R1. The working process of the circuit is as follows:

when the enable terminal CRTRL2 of U1 is inputted with a low potential, the power switch U1 is turned off, and the capacitor C1 is charged through the first charging circuit formed by the resistor R1;

when the enabling terminal CRTRL2 of the U1 is inputted with a high potential, the power switch U1 is enabled and the resistor R1 is shorted, the capacitor C1 is charged by the second charging circuit formed by the power switch U1, and the output current of the U1 can be adjusted (for example, can be adjusted to an ampere level) by changing the resistance value of the resistor R3;

The charging current based on the U1 is greater than the charging current based on the resistor R1, and further, in the initial stage of power-up, the charging current based on the U1 may be switched to a second charging circuit based on the U1, and the charging current based on the U1 may be adjusted to be very large (e.g. 2.1A), so as to implement rapid charging of the capacitor C1.

Further, in some embodiments, the second charging circuit 108 is controlled to be enabled or disabled by an enabling circuit 109; as shown in fig. 10, the enabling circuit 109 is electrically connected to the second charging circuit 108; the communication processing unit 105 is configured to: before power is supplied, the second charging circuit 108 is enabled to work through the enabling circuit 109 when the output voltage of the power taking unit 101 reaches a preset value; after being electrified, the enabling circuit 109 is turned off to supplement the compensation unit 105 with electric energy through the first charging circuit.

Furthermore, in this embodiment, before the compensation unit 104 has supplied power to the communication processing unit 105, for example, when the intelligent controller 10 is just powered on, the residual quantity of the compensation unit 104 is smaller at this time, so that in order to enable the compensation unit 104 with larger capacity to be filled as soon as possible, the compensation unit 104 is charged based on the larger second current, and the whole intelligent controller 10 can be put into a working state as soon as possible; when the whole intelligent controller 10 is in the working state, the U1 is turned off, and the smaller first current is used as the compensation unit 104 to supplement the electric energy through the current limiter 103 so as to reduce the loop current.

FIG. 7 is a schematic diagram of a circuit configuration of the enabling circuit 109 according to an embodiment; wherein the second charging circuit is implemented as a power switch U1; the output end of the voltage monitoring chip U2 is grounded through a voltage dividing resistor R15 and a voltage dividing resistor R16 which are connected in series, the resistor R16 is positioned at one side close to the ground, and a capacitor C5 is connected in parallel with the two ends of the resistor R16; the end of the resistor R16 remote from ground outputs the control signal CTRL2. The working process of the circuit is as follows:

when the voltage monitoring chip U2 monitors that the voltage of Vin reaches a preset value, the output end VOUT2 of the voltage monitoring chip U2 outputs a high level, and after the control signal CTRL2 is charged through the capacitor C5 and delayed, the high level is output for controlling the starting of the power switch U1.

As shown in fig. 12, in some embodiments, a second switch circuit 110 is further disposed between the power taking unit 101 and the electronic switch 102; the second switch circuit 110 can be sequentially turned on and off in a non-powered state of the communication processing unit 105; and when the electronic switch 102 is turned on, the power taking unit 101 supplies power, and when the electronic switch is turned off, the first switch circuit 106 is turned on. The electronic switch 102 is powered by the power taking unit 101 before the communication processing unit 1015 is powered, and may be driven before the communication processing unit 105 is powered, for example, the electronic switch 102 is initialized to be in a conducting state or a closing state; and after the communication processing unit 105 is powered on, the state of the electronic switch 102 is controlled according to the signal received by the communication processing unit.

In some embodiments, the intelligent controller 10 further includes a second driving circuit 111, configured to drive the second switching circuit 110, and drive the electronic switch 102 to be turned off when the electronic switch 102 is powered by the power taking unit 101. The second driving circuit 111 further includes a delay circuit 112, where the delay circuit 112 is configured to delay to turn off the second switching circuit 110 after the second switching circuit 110 is turned on, and turn on the first switching circuit 106 after the second switching circuit 110 is turned off.

As can be seen from the description of the above embodiment, when the electronic switch 102 is turned on, the power taking time in the period is very short (us level), and when the power is first turned on, the residual electric quantity in the compensation unit 104 is small and the capacity is large, so before the compensation unit 104 is charged (before the first switch circuit 106 is turned on), the electronic switch 102 is driven to be turned off, and the second switch circuit 110 is controlled by the delay circuit 112 to be turned on, so that the electronic switch 102 is turned off in the state of being powered by the power taking unit 101, and the second drive circuit 111 can drive the electronic switch 102 to be turned off, thereby charging the compensation unit as soon as possible to power the communication processing unit, shortening the waiting/initializing time of the intelligent controller when the power is first turned on, and entering the working state as soon as possible.

In an embodiment, the second switching circuit includes any one or a combination of at least two devices with switching functions, including a MOS transistor, a triode, and an IGBT transistor. As shown in fig. 7, a specific circuit structure diagram of the second switch circuit 110 and the second driving circuit 111 thereof is shown; the second switch circuit comprises a PMOS tube Q2, and the electronic switch comprises a double-coil magnetic latching relay; delay circuit 112 includes a capacitor C4 and a resistor R11 connected in series;

the source electrode of the PMOS tube Q2 is connected with the output end Vin of the power taking unit, the drain electrode of the PMOS tube Q2 is connected with the power supply end V_RELAY of the electronic switch through a diode D4, the drain electrode of the PMOS tube Q2 is grounded through a divider resistor R13 and a resistor R14 which are connected in series, one end of the resistor R14 is grounded, one end of the resistor R14 is connected with the base electrode of the triode P3, and the grid electrode of the PMOS tube Q2 and two ends of the source electrode are connected with a resistor R12 in parallel; the collector of the triode P4 is connected to the grid electrode of the Q2 through a capacitor C4 and a resistor R11 which are connected in series, wherein the resistor R11 is positioned on one side close to the grid electrode of the Q2; the emitter of the triode P3 is connected to the output end VOUT2 of the voltage monitoring chip U2 through a resistor R9 and a resistor R10 which are connected in series, wherein the resistor R10 is positioned at one side close to the emitter of the triode P3; the base electrode of the triode P4 is connected to one end of the resistor R9 far away from VOUT 2; the emitter of P3 and the emitter of P4 are grounded. The working process of the circuit is as follows:

When the voltage monitoring chip U2 monitors that the voltage of Vin reaches a preset value, VOUT2 outputs a high level, at the moment, the triode P4 is conducted, the collector electrode of the triode P is grounded, the grid electrode and the source electrode of Q2 are in voltage difference, Q2 is conducted, and Vin supplies power to the electronic switch through the diode D2; at this time, the base of the transistor P3 is raised to a high potential due to the conduction of Q2, the transistor P3 is turned on, the collector thereof is grounded, and the control signal k_rb outputs a low level; the electronic switch is reset under the control of K_RB and kept in an off state; meanwhile, the base electrode of the triode P1 is raised to be high potential due to the conduction of Q2, the triode P1 is conducted, the collector electrode of the triode P1 is grounded, and the collector electrode of the triode P1 is grounded, so that the potential of the base electrode of the triode P2 is lowered while the collector electrode of the triode P1 is grounded, and the triode P2 is cut off;

after the triode P4 is conducted and grounded, vin charges the capacitor C4 through the resistor R12, the resistor R11 and the capacitor C4 and forms a loop, the potential of the grid electrode of the Q2 is gradually increased in the charging process until the Q2 is turned off when the voltage difference between the grid electrode and the source electrode of the Q2 is almost absent, after the Q2 is turned off, the triode P1 is turned off due to the turn-off of the Q2, the potential of the base electrode of the triode P2 is pulled up by the high potential of the VOUT2, and the triode P2 is turned on, so that the CTRL1 outputs a low level.

Based on this, it can be seen that when the voltage monitoring chip U2 monitors that the voltage of Vin reaches the preset value and outputs a high level, the on time of Q1 is delayed due to the capacitor C4 and the resistor R11, during which the reset (turn-off) of the electronic switch is completed, and the whole circuit is kept in the first circuit taking state. In addition, since the voltages at the two ends of the capacitor cannot be suddenly changed, the grid electrode of the Q2 can be always kept at a high potential after the capacitor C4 is charged, the Q2 can be kept at an off state after being turned on and turned off, and the conduction of the triode P2 can not be influenced any more, so that the delay of the conduction of the Q1 only occurs when the power is initially applied. Of course, the conduction timing of the transistor P2 may still be affected when the capacitor C4 is charged again due to the loss of the circuit itself or other reasons such as a long-term power failure.

Therefore, in this embodiment, before the compensation unit is charged, the electronic switch is set to be in an off state, so that the lamp is prevented from being directly turned on after the communication processing unit is powered on, and meanwhile, the characteristic that the second power-taking circuit can take power in a full period is utilized, so that the compensation unit can be charged as soon as possible before the communication processing unit is powered on.

In addition, the inventor finds that when the compensation unit supplies power to the communication processing unit, the conventional single threshold judgment mode is easy to generate unstable power supply signals. Therefore, in view of this technical problem, in some embodiments of the present invention, as shown in fig. 13, the intelligent controller 10 further includes a power monitoring unit 113 electrically connected to the compensation unit 104 for monitoring the remaining power of the compensation unit 104; when the output voltage of the compensation unit 104 reaches an upper threshold value, the compensation unit is enabled to supply power to the communication processing unit; when the output voltage of the compensation unit is lower than a lower threshold value, feeding back the insufficient residual electric quantity of the current compensation unit to the communication processing unit; the upper threshold is greater than the lower threshold. By setting the upper and lower thresholds with different thresholds, stable power supply to the communication processing unit 105 can still be maintained when the output voltage of the compensation unit 104 fluctuates between the upper and lower threshold.

As shown in fig. 14 and 15, a specific circuit configuration diagram of the power supply circuit of the power monitoring unit 113 and the communication processing unit 105 is shown; wherein, a voltage adjusting circuit U5 is disposed between the compensation unit 104 and the communication processing unit 105, for adjusting the output voltage of the compensation unit 104 to the power supply voltage of the communication processing unit; the compensation unit 104 includes a capacitor C1; IN fig. 14, U3 is a linear voltage regulator, U4 is an operational amplifier, an output terminal VOUT3 of U3 is connected to a power supply terminal vs+ of U4, and is simultaneously connected to an inverting input terminal-IN of U4 through a resistor R20, an output terminal Vc of a capacitor C1 is connected to an input terminal of U3 and is simultaneously grounded through a voltage dividing resistor R17 and a resistor R18 connected IN series, one end of the resistor R18 is grounded, the other end of the resistor R18 is connected to a non-inverting input terminal +in of U4, the inverting input terminal-IN is grounded through a resistor R21, and an output terminal OUT4 of U4 is connected to a non-inverting input terminal +in through a resistor R19 and is simultaneously outputting a control signal CTRL4.

U5 is a voltage adjusting circuit for adjusting the output voltage Vc of the capacitor C1 to the power supply voltage Vo of the communication processing unit 105, and the voltage adjustment may be implemented by any circuit structure in the prior art, such as a boost switch circuit, a buck switch circuit, a linear voltage regulator, etc., and the present invention does not limit any specific form of the voltage adjusting circuit.

In addition, one of the pins of the communication processing unit 105 is connected to the anode of the diode D5 for receiving the control signal CTRL4, and the other pin is connected to the anode of the diode D6 for outputting the control signal CTRL5. The working process of the circuit is as follows:

the output end voltage Vc of the capacitor C1 supplies power for U3, and then U4 is supplied with power, namely when the electric quantity of the capacitor C1 reaches a certain value, an electric quantity monitoring circuit is started;

after the electric quantity monitoring circuit is started, U4 monitors the voltage Vc of the output end of the capacitor C1 through the non-inverting input end +IN, and when Vc reaches a preset upper threshold Vth1, CTRL4 outputs a high-level signal; when Vc is smaller than a preset lower threshold Vth2, CTRL4 outputs a low level signal. Wherein the upper threshold voltage and the lower threshold voltage are set by resistors R17 to R21.

When CTRL4 outputs a high-level signal, the diode D5 is conducted, the voltage regulating circuit U5 is enabled to work, and the capacitor C1 supplies power to the communication processing unit 105;

when the CTRL4 outputs a low level signal, the diode D5 is turned off, and after receiving the CTRL low level signal, the communication processing unit 105 controls the CTRL5 to output a high level, and the diode D6 is turned on, so that the voltage adjustment circuit U5 is enabled to work, and the compensation unit 104 continues to supply power to the communication processing unit 105. However, at this time, since the communication processing unit 105 has received the information of the shortage of the power of the compensation unit 104 reported by the power detection unit, the communication processing unit 105 can limit its own power consumption. For example, the communication processing unit 105 may limit the response frequency and/or number of times of the electronic switch and/or limit the number of times/frequency of the communication processing unit 105 and/or the transmit/receive power. In addition, after receiving the information of the insufficient electric quantity of the compensation unit 104, the communication processing unit 105 may also forcedly start the second charging loop to rapidly charge the compensation unit 104.

In all of the above embodiments, the compensation unit 104 is configured to include a super capacitor, and the capacitance is set to 0.1F-2.2F. The super capacitor has the characteristics of high discharge speed and large discharge current, and can provide enough peak current for the communication processing unit 105 when receiving and transmitting signals; meanwhile, compared with other electric energy storage units, the super capacitor can generate smaller voltage drop under the condition of releasing the same amount of electric energy, so that the output voltage of the compensation unit 104 is relatively more stable, the voltage difference at two ends of the current limiter 103 is limited, the current entering the compensation unit 104 can be limited, and the flickering of a lamp is avoided.

When the capacitance of the super capacitor is below 0.1F, the signal emitted by the communication processing unit 105 may not provide enough emission current due to insufficient energy storage, so as to cause flickering/micro-lighting of the lamp in the off state; when the capacity of the super capacitor is above 2.2F, the super capacitor may require too long charging time when being powered on for the first time due to the excessive capacity, so that the lamp blinks for a long time when being powered on for the first time. In addition, the larger the capacitance of the capacitor, the larger the occupied volume, and for the intelligent controller with limited overall volume, the capacitance of 0.5F is a preferable choice in a compromise through experiments.

As shown in fig. 16, the present invention further provides an intelligent control method applied to an intelligent controller of an ac loop connected in series with a load; the load may be any lighting device such as an energy-saving lamp, an LED, etc., an incandescent lamp, etc., and the present invention is not limited in this regard. In addition, the connection relationship between each unit/device in the embodiments of the intelligent control method described below, and the circuit operation process are the same as those of the corresponding embodiments of the intelligent controller described above.

The control method comprises the following steps:

s1, coupling a power taking unit to an electronic switch so that the power taking unit can obtain electric energy in the on or off state of the electronic switch; the electronic switch can be turned on or off to switch the operating state of the load. The electronic switch can be any device or combination of devices which can realize circuit on-off by utilizing an electronic circuit and a power electronic device, such as a thyristor, a transistor, a field effect transistor, a silicon controlled rectifier, a relay and the like, and the invention does not limit the type of the electronic switch. The operating state may be an operating state (e.g., a light on state) and a non-operating state (e.g., a light off state).

It can be understood that when the electronic switch is turned on, the load is powered by high power to enter an operating state, and when the electronic switch is turned off, the load is powered off by high power to enter a non-operating state, so that the load can be switched between the operating state and the non-operating state by controlling the electronic switch to be turned on or off. Taking a load as an example of a lamp, when the electronic switch is turned on, the lamp is turned on, and when the electronic switch is turned off, the lamp is turned off, and the lamp can be turned on or turned off by controlling the electronic switch to be turned on or turned off.

S2, configuring a communication processing unit to have a first state and a second state which are alternately arranged, and performing data interaction in the second state, wherein the power consumption of the first state is smaller than that of the second state. The data interaction may include, but is not limited to, a state that the communication processing unit has signal interaction in transmitting signals to other devices (such as other controllers, etc.), receiving signals transmitted by external devices, controlling on-off of an electronic switch, etc. Further, the power consumption of the first state being smaller than the power consumption of the second state may be understood as the average power consumption of the first state being smaller than the average power consumption of the second state, or the maximum power efficiency of the first state being smaller than the maximum power consumption of the second state; in an example, the communication processing unit enters a standby mode with low power consumption in a first state, so that the communication processing unit has low power consumption (for example, 2-3 mA) in the first state, and then enters a second state when external transmission or signal reception is required, peak current (for example, 30-40 mA) which is more than several times that in the first state is generated during signal receiving/transmitting in the second state, and the communication processing unit is switched to the first state again after the transmission is completed.

S3, coupling a compensation unit between the power taking unit and the communication processing unit, so that the compensation unit can be supplemented with electric energy in a first state of the communication processing unit to supply energy to the communication processing unit in a second state of the communication processing unit; and a current limiter is arranged between the power taking unit and the compensation unit, and the current limiter is used for limiting the current in the power taking unit.

It is noted that in some embodiments, the compensation unit not only powers the communication processing unit in its second state, but may power the communication processing unit as desired throughout its operation. When the communication processing unit cannot obtain enough electric energy from the power-taking unit, the compensation unit 104 supplies energy to the communication processing unit so as to support the communication processing unit to work normally. In one example, in the on state of the light fixture, the communication processing unit is fully powered by the compensation unit during non-powered periods to maintain its normal operation (including the first state and the second state). Likewise, the compensation unit is not only supplied with power when the communication processing unit is in the first state, but it may be supplied with power during the entire operation of the communication processing unit. When the energy in the compensation unit is consumed and the power taking unit is in a power taking loop connected in series with the load, the compensation units can be supplemented with electric energy through the current in the power taking unit so as to keep enough energy stored in the compensation unit.

Thus, based on the intelligent controller provided by the technical scheme, during the first state of the communication processing unit, the compensation unit stores the electric energy acquired by the electricity taking unit so as to supply the electric energy to the communication processing unit during the second state of the communication processing unit, the electric energy consumed by the electricity taking unit is supplemented into the compensation unit through the current limiter after the receiving and transmitting of the signals are finished, and therefore the energy in the compensation unit is kept. The current limiting part is used for limiting the current entering the compensation unit, and after the compensation unit consumes a large amount of electric energy, the electricity taking unit still supplements energy with smaller current under the action of the current limiting part, so that the current flowing in the lamp in the closed state is limited, and the problem of flickering/micro-lighting of the lamp caused by transmitting/receiving signals in the closed state is avoided. The peak current generated by receiving and transmitting signals can be prevented from influencing the load during the data interaction period of the communication processing unit.

In one embodiment, the power taking unit comprises a first power taking circuit and a second power taking circuit; the electricity taking unit obtains electric energy in the on or off state of the electronic switch, and specifically comprises the following steps:

the electronic switch is turned on or turned off to alternatively connect the electronic switch or the first power taking circuit in series with the alternating current loop of the load, so that when the electronic switch is turned on, the second power taking circuit is connected in series with the load to obtain electric energy; and when the electronic switch is turned off, the second power taking circuit is cut off, and electric energy is obtained through the first power taking circuit.

When the electronic switch is turned off, the first power taking circuit obtains electric energy from a series loop formed by the first power taking circuit and a load; when the electronic switch is turned on, the first power taking circuit is short-circuited by the electronic switch, and the second power taking circuit forms a series loop with the electronic switch and the load; the first power-taking circuit and the second power-taking circuit can be any circuit structure, for example, can be a circuit structure comprising a silicon controlled rectifier/a switch tube, can also be a voltage regulating circuit such as a BUCK, a BOOST, a flyback converter and the like, and the circuit structure of the power-taking circuit is not limited in any way. In some embodiments, the first power extraction circuit is an isolated flyback topology converter.

In one embodiment, the control method further includes: providing a first current to the compensation unit through a first charging circuit, the first current being less than a maximum value of current entering the communication processing unit in the second state; the first charging circuit is formed when the power taking unit charges the compensation unit through the current limiting part.

The maximum value of the current entering the communication processing unit in the second state can be understood as the maximum current required by the communication processing unit during data interaction, such as the peak value of the emission current during signal emission, while the power of the communication processing unit during signal transceiving is larger, such as the emission current is usually above 10mA, even can reach 30 mA-40 mA or even higher when the communication processing unit communicates based on a WiFi protocol; one end of the current limiting part is connected with the power taking unit, and the other end of the current limiting part is connected with the compensation unit, wherein the magnitude of the first current provided by the power taking unit for the compensation unit through the current limiting part is equal to the ratio of the voltage difference (namely the difference between the output voltage of the power taking unit and the output voltage of the compensation unit) at two ends of the current limiting part to the impedance of the current limiting part; the voltage at two ends of the current limiting part and the impedance thereof are reasonably set, so that the first current can be controlled to be smaller than the peak value of the emission current, and the flickering phenomenon of the lamp is improved. Wherein the voltage across the current limiter and its impedance can be set by those skilled in the art in combination with the actual circuit parameters.

In one embodiment, the control method further includes: and a first switch circuit is arranged between the power taking unit and the current limiting part so as to switch on or switch off a charging loop of the compensation unit. Further, the first switching circuit turns on or off the charging loop of the compensation unit, including: a first capacitor shared by the first power taking circuit and the second power taking circuit is arranged at the shared output end of the first power taking circuit and the second power taking circuit; monitoring the output voltage of the first capacitor by a first driving circuit coupled to the first switching circuit: when the output voltage of the first capacitor reaches a preset value, the first switch circuit is driven to be conducted; and when the output voltage of the first capacitor does not reach a preset value, the first switch circuit is driven to be turned off.

The current limiter is characterized in that one end of the current limiter is connected with the power taking unit, the other end of the current limiter is connected with the compensation unit, when the output voltage of the power taking unit reaches a preset value, the first switch circuit is conducted again to charge the compensation unit, and the current limiter can reach a relatively stable state before the power taking unit charges the compensation unit, so that the phenomenon that the potential of the input end of the second power taking circuit is continuously lowered due to the fact that the compensation unit charges in the working state of the second power taking circuit can be effectively avoided, and the circuit is halted.

In one embodiment, the second power taking circuit charges the first capacitor through at least one second capacitor, and the capacitance value of the first capacitor is larger than that of the second capacitor; the second power taking circuit is provided with a power taking stage and a non-power taking stage which are arranged at intervals; the control method further includes: in the power taking stage, the first capacitor, the second capacitor and the compensation unit are charged through the alternating current; and in a non-power-taking stage, the compensation unit is charged through the first capacitor and the second capacitor.

A power taking stage, wherein the second power taking circuit charges the first capacitor; at the moment, the second power taking circuit charges the second capacitor and the first capacitor; the capacitance value of the second capacitor is smaller than that of the first capacitor, and the second capacitor is used for stabilizing the voltage of the output end of the second power taking circuit; meanwhile, the time for the potential of the public output end to be pulled down is reduced, and the charging time of the first capacitor is ensured, so that the power taking time of the second power taking circuit is reduced, and the problem that lamps flicker/darken possibly caused by the power taking time process is avoided. During the non-power-taking period, the first capacitor enables the potential of the common output end to be relatively stable, and after the electric quantity in the compensation unit is consumed, the second capacitor and the first capacitor continue to charge the compensation unit through the current limiter so as to supplement the consumed energy. Therefore, the arrangement of the first capacitor and the second capacitor can still supplement energy to the compensation unit through the electric energy stored in the first capacitor and the second capacitor in the non-electricity-taking stage of the second electricity-taking circuit, and the voltage difference at two ends of the current-limiting part is further reduced, so that the current of the electricity-taking unit is limited, and the flicker of the lamp is avoided.

Further, the capacitance values of the first capacitor and the second capacitor are set to [10uF to 6800uF ]. When the capacitance of the first capacitor and the second capacitor is smaller than 10uF, the voltages of the output end of the power taking unit and the output end of the second power taking circuit can not be stabilized, so that the second power taking circuit can not timely supplement energy for the compensation unit; when the capacity exceeds 6800uF, the charging time of the compensation unit may be delayed due to the excessive capacity, or the power-taking time of the second power-taking circuit is increased, so that the lamp may flash. Therefore, in this embodiment, a preferred value is given through experiments: the capacitance value of the first capacitor is set to 1000uF and the capacitance value of the second capacitor is set to 470uF.

In addition, the compensation unit needs to be charged after the first power-on, and the communication processing unit can be powered after enough electric energy is stored in the compensation unit. The inventor finds that when the capacity of the compensation unit is large (such as a faraday-level capacitor), during the actual working process of the circuit, the residual electric quantity in the compensation unit is small due to the fact that the voltage of the current limiter near one end of the compensation unit is low (theoretically 0V and possibly slightly higher than 0V in practice), the voltage difference at two ends of the current limiter is relatively large, so that the current in the power-taking unit is relatively large (mA level), and the lamp flashes; meanwhile, because the capacity of the compensation unit is larger, a longer charging time is needed when the electricity taking current passing through the current limiting part is charged, so that the lamp flickers for a long time when being electrified for the first time. Thus, in view of this technical problem, in some embodiments, the control method further comprises: setting a second charging circuit between the power taking unit and the compensation unit; the second charging circuit is capable of shorting the first charging circuit when enabled and providing a second current to the compensation unit that is greater than the first current. Furthermore, in the embodiment, the compensation unit is charged by the larger second current, so that the compensation unit can be filled quickly, long-time flickering of the lamp during the first power-on is avoided, meanwhile, the communication control unit can be enabled to enter the working state as soon as possible, and the initialization time of the intelligent controller is shortened.

Further, in some embodiments, the control method further includes: setting a second switching circuit between the power taking unit and the electronic switch; the second switch circuit is sequentially turned on and off before the communication processing unit is electrified; when the electronic switch is turned on, the electronic switch is powered by the power taking unit; after being turned off, the first switch circuit is turned on.

The electronic switch is powered by the power taking unit before the communication processing unit is powered, and can be driven before the communication processing unit is powered, for example, the electronic switch is initialized to be in a conducting state or a closing state and the like; and after the communication processing unit is powered on, the state of the electronic switch is controlled according to the signal received by the communication processing unit.

In some embodiments, the second switch circuit is driven by a second driving circuit, and the electronic switch is driven to be turned off when the electronic switch is powered by the power taking unit. Further, when the voltage output by the electricity taking unit reaches a preset value, the second driving circuit drives the second switching circuit to be conducted; after the second switch circuit is turned on, the second driving circuit 111 drives the electronic switch to be turned off.

According to the description of the embodiment, when the electronic switch is turned on, the power taking time in the period is very short (us level), and when the electronic switch is powered on for the first time, the residual electric quantity in the compensation unit is small and the capacity of the electronic switch is large, so that before the compensation unit is charged (before the first switch circuit is turned on), the electronic switch is driven to be turned off, and the second drive circuit controls the conduction time of the second switch circuit through the delay circuit, so that the electronic switch is in a state of being powered on by the power taking unit, the second drive circuit can drive the electronic switch to be turned off, thereby charging the compensation unit as soon as possible to power the communication processing unit, shortening the waiting/initializing time of the intelligent controller when the electronic switch is powered on for the first time, and entering the working state as soon as possible.

In this embodiment, before charging the compensation unit, the electronic switch is set to an off state, so that the lamp is prevented from being directly turned on after the communication processing unit is powered on, and meanwhile, the characteristic that the second power-taking circuit can take power in a full period is utilized, so that the compensation unit can be charged as soon as possible before the communication processing unit is powered on.

In all of the above embodiments, the flow restrictor comprises an impedance element. The current in the first charging loop is limited by the impedance characteristic.

In all the above embodiments, the compensation unit is configured to include a super capacitor, and the capacitance is set to [ 0.1F-2.2F ]. The super capacitor has the characteristics of high discharge speed and high discharge current, and can provide enough peak current for the communication processing unit when receiving and transmitting signals; meanwhile, compared with other electric energy storage units, the super capacitor can generate smaller voltage drop under the condition of releasing the same amount of electric energy, so that the output voltage of the compensation unit is relatively more stable, the voltage difference at two ends of the current limiter is limited, the current entering the compensation unit can be limited, and the flickering of the lamp is avoided. When the capacity value of the super capacitor is below 0.1F, the insufficient energy storage can not provide enough emission current for the signal emitted by the communication processing unit, so that the lamp is enabled to flash/slightly lighten in the state of turning off the lamp; when the capacity of the super capacitor is above 2.2F, the super capacitor may require too long charging time when being powered on for the first time due to the excessive capacity, so that the lamp blinks for a long time when being powered on for the first time. In addition, the larger the capacitance of the capacitor, the larger the occupied volume, and for the intelligent controller with limited overall volume, the capacitance of 0.5F is a preferable choice in a compromise through experiments.

In addition, as shown in fig. 17, the present invention further provides an intelligent control system for controlling a load device 20, wherein the control system includes: a remote control device 30 for generating and transmitting a control command; and, the intelligent controller of any one of the above, or an intelligent controller for implementing the control method of any one of the above; wherein the intelligent controller 10 is connected in series to the ac power circuit of the load device 20, and controls the operation state of the load device 20 based on the control command.

The load 20 may be any lighting device such as an energy-saving lamp, an LED lamp, an incandescent lamp, etc., which is not limited in the present invention; the operating state may be an operating state (e.g., a light on state) and a non-operating state (e.g., a light off state); the control instruction is any form of instruction containing control information, and the intelligent controller can change the working state of the load after receiving the control instruction; taking a load as an example of a lamp, the remote control device transmits a lamp on/off instruction to the intelligent controller, and the intelligent controller can control the lamp to be turned on/off after receiving the instruction.

In one embodiment, the remote control device 30 includes at least one of a wireless battery switch, a passive inductive switch, a wall switch with a wireless signal transmitting function, and a speaker device with a voice interaction function.

In the description of the present specification, reference to the terms "some embodiments," "one particular implementation," "a particular implementation," "one example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a particular feature, structure, material, or characteristic described in connection with the above may be combined in any suitable manner in one or more embodiments or examples.

In addition, it should be noted that the foregoing embodiments may be combined with each other, and the same or similar concept or process may not be repeated in some embodiments, that is, the technical solutions disclosed in the later (described in the text) embodiments should include the technical solutions described in the embodiment and the technical solutions described in all the embodiments before the embodiment.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solution of the present invention, and not limiting thereof; while the invention has been described in detail with reference to the foregoing embodiments, it will be appreciated by those skilled in the art that variations may be made in the techniques described in the foregoing embodiments, or equivalents may be substituted for in part or in whole; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. An intelligent controller adapted to be connected in series in an ac power circuit of a load to control an operating state of the load, the intelligent controller comprising:

a compensation unit coupled between the power-taking unit and the communication processing unit and configured to: the power supply device can be supplemented with power in a first state of the communication processing unit and can supply power to the communication processing unit in a second state of the communication processing unit; and a current limiter is arranged between the electricity taking unit and the compensation unit and used for limiting the current in the electricity taking unit.

2. The intelligent controller according to claim 1, wherein a first switching circuit is provided between the power taking unit and the current limiting unit, for turning on or off a charging loop of the compensation unit, and being turned on when it is determined that the output voltage of the power taking unit reaches a preset value.

3. The intelligent controller of claim 2, wherein the power taking unit comprises a first power taking circuit and a second power taking circuit, the first power taking circuit and the second power taking circuit share an output end, the first switch circuit is electrically connected with the output end to turn off the charging loop when the output voltage of the power taking unit is within a preset value, and turn on the charging loop when the output voltage of the power taking unit reaches the preset value.

4. The intelligent controller of claim 3, wherein the power take-off unit is provided with a first capacitor common to the first power take-off circuit and the second power take-off circuit at the common output terminal;

5. The intelligent controller of claim 4, wherein the second power take-off circuit charges the first capacitor through at least one second capacitor, the first capacitor having a larger capacitance than the second capacitor;

6. The intelligent controller of claim 2, wherein the power take-off unit forms a first charging circuit of the compensation unit via the current limiter, providing a first current to the compensation unit that is less than a maximum value of current into the communication processing unit in the second state.

7. The intelligent controller of claim 6, wherein a second charging circuit is further provided between the power take-off unit and the compensation unit, configured to short-circuit the first charging circuit when enabled, and provide a second current to the compensation unit that is greater than the first current.

8. The intelligent controller of claim 7, further comprising an enable circuit electrically connected to the second charging circuit; the communication processing unit is configured to: before power is supplied, enabling the second charging circuit to work through the enabling circuit when the output voltage of the power taking unit reaches a preset value; after being electrified, the enabling circuit is cut off so as to supplement electric energy for the compensation unit through the first charging circuit.

9. The intelligent controller of claim 7, wherein the current limiter comprises an impedance element; the second charging circuit comprises a power switch; the first switching circuit comprises any one or a combination of at least two devices with switching functions, wherein the devices are composed of MOS tubes, triodes and IGBT tubes.

10. The intelligent controller according to any one of claim 5, wherein the capacitance value of the first capacitor is set to 1000uF, the capacitance value of the second capacitor is set to 470uF, and the compensation unit is a super capacitor, and the capacitance value is 0.5F.

11. An intelligent control system for controlling a load device, the control system comprising:

the intelligent controller of any one of claims 1-10;

the intelligent controller is connected in series to the alternating current loop of the load equipment and controls the working state of the load equipment based on the control instruction; the remote control equipment comprises at least one of a wireless battery switch, a passive induction type switch, a wall switch with a wireless signal transmitting function and sound box equipment with a voice interaction function.