KR102149047B1 - Internet of things lighting switch module withcharge amount check function of super capacitor - Google Patents

Abstract

The present invention relates to an IoT lighting switch module having a function of checking the amount of charge of a super capacitor. According to the present invention, the IoT lighting switch module having a function of checking the amount of charge of a super capacitor comprises: a relay switch; a super capacitor; a first regulator; a controller connected to the first regulator; and a capacitor switch. According to the present invention, a remote control of lighting can be performed without using battery power.

Description

IoT lighting switch module with super capacitor charge check function {INTERNET OF THINGS LIGHTING SWITCH MODULE WITHCHARGE AMOUNT CHECK FUNCTION OF SUPER CAPACITOR}

The present invention relates to an IoT lighting switch module having a function of checking a charge amount of a super capacitor.

Internet of Things (IoT) refers to a technology that enables people to communicate with things and information between things and things based on the Internet. Sensors and communication modules are built into various objects to connect to the Internet. The Internet of Things allows objects connected to the Internet to exchange information with each other and provide users with information they have analyzed and learned by themselves, or allow users to remotely control objects by vomiting the Internet.

With the development of such IoT technology, smart home construction is becoming a reality. In a smart home, all devices in the house, including home appliances such as TVs, air conditioners, refrigerators, energy consuming devices such as water, electricity, lighting, heating and cooling, and security devices such as door locks and CCTV, are connected to the Internet so that users can remotely monitor and monitor them. It represents the technology that allows you to control. In particular, lighting and heating and cooling are the areas where smart home construction is being realized the fastest.

In the case of the lighting field, products having names and forms such as the lighting device itself, a smart switch or a smart lighting socket are being spread. For smooth remote monitoring and control, the products should always be powered regardless of the on/off status of the lighting. The above products solve the power problem by directly connecting a neutral wire to receive power at all times, by incorporating a large-capacity battery, or by replacing batteries. However, most homes before smart home construction do not have a neutral wire that can be connected to the above products in the wall or ceiling, so there is an inconvenience that separate wiring work is required to supply power at all times. do. In addition, the built-in battery or battery replacement method increases the weight and volume of the product, which is an obstacle to weight reduction and miniaturization.

Registered Patent Publication No. 10-1846518, 2018.04.02.

The problem to be solved by the present invention is to provide an IoT lighting switch module that enables remote control of lighting without always receiving power and without a built-in battery.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

In accordance with one aspect of the present invention for solving the above-described problem, the IoT lighting switch module connected between the (i) active line and (ii) the other power terminal of the lighting in which one power terminal is connected to the neutral wire is A relay switch connected between the other power terminal, the active line and the other power terminal of the lighting, respectively, and being charged by receiving a normal current from the active line when the relay switch is turned on, When the relay switch is turned off (turn-off), a supercapacitor that is charged by receiving a leakage current from the other power terminal of the lighting and wirelessly communicates with a user device, and controls the relay switch according to a control command from the user device. On-off control, checking the charging voltage of the super capacitor, each connected to the active line and the other power terminal of the lighting, to receive the normal current from the active line when the relay switch is turned on, the relay A controller receiving the leakage current from the other power terminal of the lighting when the switch is turned off, and a capacitor switch connected between the super capacitor and the power input terminal of the controller, wherein the controller comprises: the user device A wireless communication module that wirelessly communicates with and receives the control command from the user device, a power switch connected between a power input terminal of the controller and a power input terminal of the wireless communication module, and a power input terminal of the controller A switch control module that is connected, checks a charging voltage of the super capacitor, controls on and off the capacitor switch according to an operation mode of the wireless communication module, and controls on/off the power switch according to the charging voltage of the super capacitor Including, the capacitor switch, when the operation mode of the wireless communication module is switched from the sleep (Sleep) mode to the active (Active) mode, is turned on and the wireless communication module is switched from the super capacitor to the active mode. The power switch is turned on when the charging voltage of the super capacitor is greater than a first predetermined value so that power is supplied to the wireless communication module from the super capacitor, and When the charging voltage of the super capacitor is less than the second predetermined value, it is turned off so that power is not supplied to the wireless communication module from the super capacitor.

In some embodiments of the present invention, a boost converter connected between the capacitor switch and the power input terminal of the controller may further include a boost converter that boosts and outputs a charging voltage of the super capacitor.

In some embodiments of the present invention, a first constant voltage regulator connected between the active line and the super capacitor may further include a first constant voltage regulator configured to maintain an output voltage constant to correspond to a predetermined ratio of the rated voltage of the super capacitor. .

In some embodiments of the present invention, a first constant current circuit connected between the first constant voltage regulator and the super capacitor may further include a first constant current circuit that constantly maintains an output current supplied to the super capacitor.

In some embodiments of the present invention, there is further provided a second constant voltage regulator connected between the power terminal of the other side of the lighting and the super capacitor, and maintaining the output voltage constant to correspond to a predetermined ratio of the rated voltage of the super capacitor. Can include.

In some embodiments of the present invention, a second constant current circuit connected between the second constant voltage regulator and the super capacitor may further include a second constant current circuit that constantly maintains an output current supplied to the super capacitor.

In some embodiments of the present invention, the other side of the light is connected between the power terminal of the other side of the light and the second constant voltage regulator, and between the power terminal of the other side of the light and the controller, and the other side of the light when the relay switch is turned off. It may further include an AC-DC converter receiving the leakage current from a power terminal and converting the leakage current into AC-DC and outputting it.

In some embodiments of the present invention, the capacitor switch may be turned off when the operation mode of the wireless communication module switches from the active mode to the sleep mode.

In some embodiments of the present invention, the controller is a regulator that is connected in parallel with the power switch between the power input terminal of the controller and the switch control module, and maintains a constant output voltage supplied to the switch control module. It may further include.

In some embodiments of the present invention, the wireless communication may include one or more of Wi-Fi, Li-Fi, Bluetooth, Ultra Wide Band (UWB), Zigbee, and Z-wave communication.

Other specific details of the present invention are included in the detailed description and drawings.

According to the present invention described above, the supercapacitor receives the normal current from the active line when the relay switch is turned on, and when the relay switch is turned off, the leakage current is supplied from the lighting and stored. When switching to the active mode requiring consumption, current can be supplied from the super capacitor, and the controller can receive leakage current from the lighting even when the relay switch is turned off, so that the neutral wire is directly connected to supply constant power. It is possible to provide an IoT lighting switch module that enables remote control of lighting without receiving, and also, without using battery power by embedding a large-capacity battery.

In addition, an IoT lighting switch module that enables the controller to efficiently receive current from the super capacitor and prevents the super capacitor from overdischarging by controlling the power switch on and off by checking the charging voltage of the super capacitor. Can provide.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a conceptual diagram schematically showing an example of an application environment of an IoT lighting switch module according to an embodiment of the present invention.
2 is a circuit diagram schematically showing the configuration of an IoT lighting switch module according to an embodiment of the present invention.
3 is a circuit diagram schematically showing the configuration of the first constant voltage/constant current circuit of FIG. 2.
4 is a circuit diagram schematically showing the configuration of the second constant voltage/constant current circuit of FIG. 2.
5 is a circuit diagram schematically showing the configuration of the controller of FIG. 2.
6 is a circuit diagram schematically showing switch control and current flow of the IoT lighting switch module of FIG. 2 when switching to an active mode.
7 is a circuit diagram schematically showing switch control and current flow of the IoT lighting switch module of FIG. 2 in a turn-on state of lighting.
FIG. 8 is a circuit diagram schematically showing switch control and current flow of the IoT lighting switch module of FIG. 2 in a turn-off state of lighting.
9 is a circuit diagram schematically showing switch control and current flow of the IoT lighting switch module of FIG. 2 when switching to the sleep mode.
FIG. 10 is a graph showing a relationship between current consumption of the controller of FIG. 2 and an operation mode and an on/off state of a second switch.
11 is a flowchart schematically illustrating a method of controlling the IoT lighting switch module of FIG. 2.
12 is a flowchart schematically illustrating a method of preventing overdischarge of a super capacitor of the IoT lighting switch module of FIG. 2.
13 is a conceptual diagram schematically showing another example of an application environment of an IoT lighting switch module according to an embodiment of the present invention.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, only the present embodiments are intended to complete the disclosure of the present invention, It is provided to fully inform the technician of the scope of the present invention, and the present invention is only defined by the scope of the claims.

The terms used in the present specification are for describing exemplary embodiments and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, “comprises” and/or “comprising” do not exclude the presence or addition of one or more other elements other than the mentioned elements. Throughout the specification, the same reference numerals refer to the same elements, and “and/or” includes each and all combinations of one or more of the mentioned elements. Although "first", "second", and the like are used to describe various elements, it goes without saying that these elements are not limited by these terms. These terms are only used to distinguish one component from another component. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical idea of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used with meanings that can be commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not interpreted ideally or excessively unless explicitly defined specifically.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc., as shown in the figure It can be used to easily describe the correlation between a component and other components. Spatially relative terms should be understood as terms including different directions of components during use or operation in addition to the directions shown in the drawings. For example, if a component shown in a drawing is turned over, a component described as "below" or "beneath" of another component will be placed "above" the other component. I can. Accordingly, the exemplary term “below” may include both directions below and above. Components may be oriented in other directions, and thus spatially relative terms may be interpreted according to orientation.

The active line means a line through which an AC voltage is supplied and current flows in, and the neutral line is an ideal line with a voltage of 0 and through which current flows. The active line is also called the heart line. The normal current represents the normal current supplied from the active line, and is used to distinguish it from the leakage current.

Sleep mode is a low-power mode or a power-saving mode, which indicates a state in which, for example, a wireless communication module is disabled or performs only a minimized function or operation (for example, reception of a wake-up signal, etc.), and the active mode is the contrast of the sleep mode. Is used as a concept.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram schematically showing an example of an application environment of an IoT lighting switch module according to an embodiment of the present invention.

Referring to FIG. 1, the IoT lighting switch module 100 according to an embodiment of the present invention may be provided in the form of a switch exposed to the outside or buried in a wall or an internal configuration of a switch box.

The IoT lighting switch module 100 is connected between an active line and one power terminal of the other power terminal of the lighting 10 connected to a neutral line. The neutral wire is not directly connected to the IoT lighting switch module 100. Therefore, the IoT lighting switch module 100 is not always supplied with power. In addition, as will be described later with reference to FIG. 2, the IoT lighting switch module 100 does not incorporate a large-capacity battery.

The IoT lighting switch module 100 communicates wirelessly with the user device 20. For example, the user device 20 may include one or more of a telecommunication device such as a smart phone, a tablet, a PDA, and a laptop, and a remote controller, but is not limited thereto. For example, wireless communication may include at least one of Wi-Fi, Li-Fi, Bluetooth, UWB (Ultra Wide Band), Zigbee, and Z-wave communication, but is not limited thereto. The IoT lighting switch module 100 may be connected to the gateway device through wireless communication, and may be connected to the user device 20 through the Internet.

2 is a circuit diagram schematically showing the configuration of the IoT lighting switch module according to an embodiment of the present invention, FIG. 3 is a circuit diagram schematically showing the configuration of the first constant voltage/constant current circuit of FIG. 2, and FIG. FIG. 2 is a circuit diagram schematically showing the configuration of the second constant voltage/constant current circuit, and FIG. 5 is a circuit diagram schematically showing the configuration of the controller of FIG. 2.

2, the IoT lighting switch module 100 according to an embodiment of the present invention includes a first regulator 110, a super capacitor 120, a second regulator 130, a controller 140, a switch driver ( 150), AC-DC converter 160, first constant voltage/constant current circuit 170, second constant voltage/constant current circuit 180, boost converter 190, first switch (SW_1), second switch (SW_2) , First to fifth diodes D1 to D5.

The first regulator 110 is disposed between the active line and the first switch SW_1, between the active line and the super capacitor 120, and between the active line and the second regulator 130. For example, the first regulator is to keep the output voltage constant and to stabilize the amount of output current. For example, the first regulator 110 may output a voltage of 12.0V, but is not limited thereto. The output voltage of the first regulator 110 may be variously modified according to exemplary embodiments.

The first switch SW_1 is connected to the active line through the first regulator 110. The first switch SW_1 is connected between the active line and the other power terminal of the lighting 10. For example, the first switch SW_1 may be a relay switch, but is not limited thereto.

The controller 140 communicates wirelessly with the user device 20. To this end, the controller 140 includes a wireless communication module 141. As described above, the wireless communication module 141 communicates with the user device 20 by using at least one of Wi-Fi, Li-Fi, Bluetooth, UWB (Ultra Wide Band), Zigbee, and Z-wave communication. Can communicate wirelessly. For example, a micro controller unit (MCU) may be used as the controller 140, but the present invention is not limited thereto. The controller 140 controls on and off the first switch SW_1 according to a control command from the user device 20.

A switch driver 150 for controlling the switch on and off is provided. The controller 140 transmits an on/off control command of the first switch SW_1 to the switch driver 150, and the switch driver 150 directly controls the first switch SW_1 according to the control command from the controller 140. On and off control. For example, the switch driver 150 may be a relay driver, but is not limited thereto.

The AC-DC converter 160 is connected between the first switch SW_1 and the power input terminal of the controller 140, and between the other power terminal of the lighting 10 and the power input terminal of the controller 140. Therefore, as will be described later with reference to FIG. 8, the AC-DC converter 160 receives a leakage current from the other power terminal of the lighting 10 when the first switch SW_1 is turned off, and reduces the leakage current. AC-DC conversion and supply to the controller 140. For example, the AC-DC converter 160 may output a voltage of 3.6V, but is not limited thereto. The output voltage of the AC-DC converter 160 may be variously modified according to embodiments. Meanwhile, when the first switch SW_1 is turned on, the AC-DC converter 160 does not receive a normal current from the first regulator 110 due to excessive current consumption of the lighting 10 or is very small. Only the size of the current can be supplied.

The second regulator 130 is disposed between the first regulator 110 and the power input terminal of the controller 140 and between the AC-DC converter 160 and the power input terminal of the controller 140. For example, the second regulator 130 may be a low dropout (LDO) regulator for providing a constant output voltage even at a low input voltage. For example, the second regulator 130 may output a voltage of 3.0V, but is not limited thereto. The output voltage of the second regulator 130 may be variously modified according to exemplary embodiments.

The super capacitor 120 is connected to the active line through the first regulator 110. Accordingly, as will be described later with reference to FIG. 7, when the first switch SW_1 is turned on, the super capacitor 120 receives a normal current from the active line.

The first constant voltage/constant current circuit 170 is disposed between the first regulator 110 and the super capacitor 120, receives a normal current from the first regulator 110 connected to the active line and supplies it to the super capacitor 120. .

Referring to FIG. 3, the first constant voltage/constant current circuit 170 includes a first constant voltage regulator 171 and a first constant current circuit 172.

The first constant voltage regulator 171 is connected between the first regulator 110 and the first constant current circuit 172, and a predetermined ratio of the rated voltage of the super capacitor 120 (for example, between 80% and 90%). The output voltage is kept constant to correspond to the ratio of

The first constant current circuit 172 is connected between the first constant voltage regulator 171 and the super capacitor 120, and maintains a constant output current supplied to the super capacitor 120.

Also, the super capacitor 120 is connected to the power output terminal of the AC-DC converter 160. Therefore, as will be described later with reference to FIG. 8, the super capacitor 120 receives the AC-DC converted leakage current from the AC-DC converter 160 when the first switch SW_1 is turned off.

The second constant voltage/constant current circuit 180 is disposed between the AC-DC converter 160 and the super capacitor 120 to receive the AC-DC converted leakage current from the AC-DC converter 160 and receive the super capacitor 120. ).

Referring to FIG. 4, the second constant voltage/constant current circuit 180 includes a second constant voltage regulator 181 and a second constant current circuit 182.

The second constant voltage regulator 181 is connected between the AC-DC converter 160 and the second constant current circuit 182, and a predetermined ratio of the rated voltage of the super capacitor 120 (e.g., 80% to 90 The output voltage is kept constant to correspond to the ratio between percent).

The second constant current circuit 182 is connected between the second constant voltage regulator 181 and the super capacitor 120 and maintains an output current supplied to the super capacitor 120 constant.

That is, the AC-DC converter 160 is connected between the other power terminal of the lighting 10 and the second constant voltage regulator 181, so that leakage current from the other power terminal of the lighting when the first switch SW_1 is turned off. Is supplied, the leakage current is converted into AC-DC, and output is supplied to the second constant voltage regulator 181.

Referring back to FIG. 2, the super capacitor 120 is an ultra-high-capacity capacitor and may store an active line and a current supplied from the AC-DC converter 160.

The second switch SW_2 is connected between the super capacitor 120 and the power input terminal of the controller 140. When the second switch SW_2 is turned on, the current stored in the super capacitor 120 may be supplied to the controller 140, so the second switch SW_2 may be referred to as a capacitor switch.

The controller 140 may on-off control the second switch SW_2 according to the operation mode. The controller 140 may control the second switch SW_2 to be turned on when switching from a sleep mode to an active mode. Further, the controller 140 may control the second switch SW_2 to be turned off when switching from the active mode to the sleep mode.

Operation modes including a sleep mode and an active mode may relate to the wireless communication module 141. The sleep mode may represent a state in which the wireless communication module 141 is disabled or performs only a minimized function or operation (reception of a wake-up signal, etc.) compared to the active mode, but is not limited thereto.

The boost converter 190 is connected between the second switch SW_2 and the controller 120 to boost the charging voltage of the super capacitor 120 and output it. Specifically, when the second switch SW_2 is turned on, the boost converter 190 boosts the charging voltage of the super capacitor 120 to supply 3.3V of power to the controller 140. In this case, the charging voltage of the super capacitor 120 may be 2.7V when fully charged. However, the present invention is not limited thereto, and the charging voltage of the super capacitor 12 and the output voltage of the boost converter 19 may be variously modified according to exemplary embodiments.

Referring to FIG. 5, the controller 140 may further include a third regulator 142, a switch control module 143, and a third switch SW_3.

The switch control module 143 performs a switch control function of the controller 140. As described above, the switch control module 143 controls on and off the first switch SW_1 according to a control command from the user device, or turns on and off the second switch SW_2 according to an operation mode of the controller 140 Control.

The third regulator 142 is connected between the power input terminal 144 of the controller 140 and the switch control module 143. The third regulator constantly maintains the output voltage supplied to the switch control module 143. For example, depending on the on-off state of the second switch SW_2, the third regulator 142 has a voltage of 3.3V by the boost converter 190 or a voltage of 3.0V by the second regulator 130 Can be entered. In addition, the third regulator 142 may output a voltage of 2.5V to the switch control module 143. Accordingly, the switch control module 143 is always supplied with a constant voltage of 2.5V regardless of the operation mode.

The third switch SW_3 is connected between the power input terminal 144 of the controller 140 and the power input terminal of the wireless communication module 141. The third switch SW_3 is connected to the power input terminal 144 of the controller 140 in parallel with the third regulator 142 described above. Since power can be supplied to the wireless communication module 141 when the third switch SW_3 is turned on, that is, the wireless communication module 141 can operate only when the third switch SW_3 is turned on, the third switch (SW_3) may be referred to as a power switch. When the third switch SW_3 is turned off, power supply to the wireless communication module 141 is cut off, and the IoT lighting switch module 100 cannot wirelessly communicate with the user device.

The switch control module 143 checks the charging voltage of the super capacitor 120 and turns on and off the third switch SW_3, which will be described later, according to the charging voltage of the super capacitor 120. Even if the second switch SW_2 is turned on when switching from the sleep mode to the active mode, if the third switch SW_3 is not turned on, the wireless communication module 141 is required for switching from the super capacitor 120 to the active mode. Cannot receive current. The switch control module 143 may control the third switch SW_3 to be turned on when the charging voltage of the super capacitor 120 is greater than a predetermined first value (eg, 1.2V). Accordingly, power may be supplied to the wireless communication module 141 from the super capacitor 120. The switch control module 143 may control the third switch SW_3 to be turned off when the charging voltage of the super capacitor 120 is less than a predetermined second value (eg, 1.0V). Accordingly, power is not supplied to the wireless communication module 141 from the super capacitor 120.

In some embodiments of the present invention, unlike shown in FIG. 5, the switch control module 143 may be configured separately according to individual switches.

The first diode D1 connects the active line and the super capacitor 120. The second diode D2 is between the first switch SW_1 and the power input terminal of the AC-DC converter 160 or between the other power terminal of the lighting 10 and the power input terminal of the AC-DC converter 160 Connect. The third diode D3 is disposed between the power output terminal of the AC-DC converter 160 and the super capacitor 120. The fourth diode D4 is disposed between the power output terminal of the AC-DC converter 160 and the power input terminal of the controller 140. More specifically, the fourth diode D4 is disposed between the power output terminal of the second regulator 130 and the power input terminal of the controller 140. The fifth diode D5 is disposed between the super capacitor 120 and the power input terminal of the controller 140. The sixth diode D6 is included in the first constant voltage/constant current circuit 170 and is disposed between the first constant current circuit 172 and the super capacitor 120. The seventh diode D7 is included in the second constant voltage/constant current circuit 180 and is disposed between the second constant current circuit 182 and the super capacitor 120. The first to seventh diodes D1 to D7 are used for purposes of rectifying current, maintaining a predetermined voltage, and maintaining a predetermined current.

Although not clearly shown, the IoT lighting switch module 100 according to an embodiment of the present invention may further include any component not shown in FIG. 2.

Hereinafter, switch control and current flow will be described when switching the operation mode of the IoT lighting switch module 100 according to an embodiment of the present invention having the above components or during on/off control of lighting.

6 is a circuit diagram schematically showing switch control and current flow of the IoT lighting switch module of FIG. 2 when switching to an active mode.

Referring to FIG. 6, as described above, the IoT lighting switch module 100 controls the turn-on of the second switch SW_2 when switching from the sleep mode to the active mode. In addition, if the charging voltage of the super capacitor 120 is greater than the first predetermined value, the third switch SW_3 inside the controller 140 is turned on. Accordingly, the controller 140 can receive a current required for switching to the active mode from the super capacitor 120. As will be described later, when the controller 140 (specifically, the wireless communication module 141) switches from a sleep mode to an active mode, the amount of current consumption increases relatively rapidly. In response to this, the controller 140 can solve the consumption of a large amount of current by using the current stored in the supercapacitor 120 rather than from the second regulator 130.

On the other hand, due to the potential difference between the super capacitor 120 and the second regulator 130, that is, the voltage applied to the super capacitor 120 is relatively high, the second regulator 130 may supply current to the controller 140. Can't.

The IoT lighting switch module 100 may switch an operation mode from a sleep mode to an active mode in response to an external interrupt. For example, the interrupt may be reception of a wake-up signal from the user device 20, but is not limited thereto. The wake-up signal means a signal that is predefined for switching from a sleep mode to an active mode, that is, to wake up the sleeping IoT lighting switch module 100 (controller 140 or wireless communication module 141). The wake-up signal may be predefined in one or more communication protocols among Wi-Fi, Li-Fi, Bluetooth, UWB (Ultra Wide Band), Zigbee, and Z-wave communication protocols.

The IoT lighting switch module 100 controls the first switch SW_1 to turn on or off according to a control command from the user device 20 in the active mode to turn on or turn off the lighting 10.

7 is a circuit diagram schematically showing switch control and current flow of the IoT lighting switch module of FIG. 2 in a turn-on state of lighting.

Referring to FIG. 7, the controller 140 of the awakened IoT lighting switch module 100 transmits a turn-on control command to the switch driver 150, and the switch driver 150 controls the turn-on of the first switch SW_1. . The current flow in this state is shown in FIG. 7.

The normal current output by the first regulator 110 is supplied to the first switch SW_1, the super capacitor 120, and the second regulator 130. The normal current passing through the first switch SW_1 is (mostly) supplied to the lighting 10. Then, the normal current output by the second regulator 130 is supplied to the controller 140.

In addition, as described above, the normal current output by the first regulator 110 passes through the first constant voltage/constant current circuit 170 and is supplied to the super capacitor 120, and the super capacitor 120 is supplied Save the current.

FIG. 8 is a circuit diagram schematically showing switch control and current flow of the IoT lighting switch module of FIG. 2 in a turn-off state of lighting.

Referring to FIG. 8, the controller 140 of the awakened IoT lighting switch module 100 transmits a turn-off control command to the switch driver 150, and the switch driver 150 turns off the first switch SW_1. Control. The current flow in this state is shown in FIG. 8.

A leakage current from the lighting 10 is supplied to the AC-DC converter 160. The AC-DC converted leakage current output by the AC-DC converter 160 is supplied to the second regulator 130 and the super capacitor 120.

Then, the leakage current output by the second regulator 130 is supplied to the controller 140. Accordingly, the controller 140 can receive current even when the first switch SW_1 is turned off and the lighting 10 is turned off.

In addition, as described above, the AC-DC converted leakage current output by the AC-DC converter 160 passes through the second constant voltage/constant current circuit 180 and is supplied to the super capacitor 120, and the super capacitor ( 120) stores the supplied leakage current.

9 is a circuit diagram schematically showing switch control and current flow of the IoT lighting switch module of FIG. 2 when switching to the sleep mode.

Referring to FIG. 9, as described above, when the IoT lighting switch module 100 switches from an active mode to a sleep mode, the second switch SW_2 is turned off. Accordingly, current supply from the super capacitor 120 to the controller 140 is cut off. In this case, the controller 140 may receive current from the second regulator 130. As will be described later, the controller 140 (specifically, the wireless communication module 141) relatively reduces the amount of current consumption while operating in the sleep mode.

FIG. 10 is a graph showing a relationship between current consumption of the controller of FIG. 2 and an operation mode and an on/off state of a second switch.

Referring to FIG. 10, the IoT lighting switch module 100 switches the operation mode from the sleep mode to the active mode in response to an interrupt such as, for example, receiving a wake-up signal from the user device 20 while waiting in the sleep mode. can do. In addition, the IoT lighting switch module 100 may determine that the operation mode switching condition has been satisfied while operating in the active mode, for example, if there is no operation for a predetermined period of time, and switch the operation mode from the active mode to the sleep mode. have.

The controller 140 of the IoT lighting switch module 100 consumes a relatively large amount of current in the active mode and a relatively small amount of current in the sleep mode. In particular, when switching from the sleep mode to the active mode, the amount of current consumption of the wireless communication module 141 increases rapidly. Therefore, at this time, the current supplied from the second regulator 130 is insufficient, and the controller 140 controls the second switch SW_2 to turn on to supply the current required for switching from the super capacitor 120 to the active mode. To be able to receive it. However, as described above, in order for the wireless communication module 141 to receive power from the super capacitor 120, the third switch SW_3 inside the controller 140 must also be turned on.

11 is a flowchart schematically illustrating a method of controlling the IoT lighting switch module of FIG. 2.

Referring to FIG. 11, in step S210, the controller 140 waits in a sleep mode.

Then, in step S220, the controller 140, more specifically, the wireless communication module 141 of the controller 140 wirelessly communicates with the user device 20, and receives a wake-up signal from the user device 20 do. The wake-up signal may be received from the user device 20 with or before a control command for controlling the lighting 10.

Subsequently, in step S230, the controller 140 switches the operation mode from the sleep mode to the active mode and drives it, and controls the second switch SW_2 to turn on. Accordingly, as described above, the controller 140 receives current from the super capacitor 120.

Subsequently, in step S240, the controller 140 (receives a control command from the user device 20) turns on or off the first switch SW_1 according to the control command from the user device 20.

Subsequently, in step S250, the controller 140 determines a condition for switching the operation mode from the active mode to the sleep mode. For example, when there is no operation for a predetermined time, that is, when a control command from the user device 20 is not received, the controller 140 may determine that the above condition is satisfied, but is limited thereto. no.

Subsequently, in step S260, when the above condition is satisfied, the controller 140 switches the operation mode from the active mode to the sleep mode and drives it, and controls the second switch SW_2 to turn off. Accordingly, as described above, the supply of current from the super capacitor 120 to the controller 140 is blocked.

12 is a flowchart schematically illustrating a method of preventing overdischarge of a super capacitor of the IoT lighting switch module of FIG. 2.

Referring to FIG. 12, in step S310, the switch control module 413 checks the charging voltage of the super capacitor 120. The check of the charging voltage of the capacitor 120 by the switch control module 413 may be performed periodically, continuously or in real time.

Subsequently, in step S320, the switch control module 413 determines whether the charging voltage of the super capacitor 120 is greater than a first predetermined value.

As a result of the determination, if the charging voltage of the super capacitor 120 is greater than the first predetermined value, in step S330, the switch control module 143 controls the third switch SW_3 to turn on. When the third switch SW_3 is turned on, as shown in FIG. 5, the wireless communication module 141 can operate by receiving power from the second regulator 130 or the boost converter 190. In particular, when the operation mode is the active mode, the wireless communication module 141 receives power from the super capacitor 120 through the boost converter 190. At this time, the super capacitor 120 discharges.

On the other hand, if the charging voltage of the super capacitor 120 is less than or equal to the first predetermined value, in step S340, the switch control module 143 determines whether the charging voltage of the super capacitor is less than the second predetermined value.

As a result of the determination, if the charging voltage of the super capacitor 120 is less than the second predetermined value, in step S350, the switch control module 143 controls the turn-off of the third switch SW_3. When the third switch SW_3 is turned off, as illustrated in FIG. 5, the wireless communication module 141 cannot receive power either from the second regulator 130 or the boost converter 190. As described above, the wireless communication function of the controller 140 itself is turned off, and the IoT lighting switch module 100 cannot wirelessly communicate with the user device. Even if the second switch SW_2 is turned on, since the third switch SW_3 is turned off, the wireless communication module 141 cannot receive power from the super capacitor 120 through the boost converter 190. At this time, the super capacitor 120 is charged, and the charging voltage increases. When the charging voltage of the super capacitor 120 is less than the second predetermined voltage, further discharge of the super capacitor 120 is blocked and charging is started, thereby preventing overdischarge of the super capacitor 120.

On the other hand, if the charging voltage of the super capacitor 120 is less than or equal to the first predetermined value and greater than or equal to the second predetermined value, in step S360, the switch control module 143 sets the on-off state of the third switch SW_3 to the present. Keep it together. That is, by controlling the turn-off of the third switch (SW_3), in a situation where the super capacitor 120 is charged to some extent and the charging voltage is equal to or greater than the second predetermined value but still not larger than the first predetermined value, the third switch ( SW_3) is not controlled and the super capacitor 120 is continuously charged. It waits until the super capacitor 120 is sufficiently charged and the charging voltage of the super capacitor 120 becomes a stable state greater than the first predetermined value. Otherwise, if the third switch (SW_3) is turned on and controlled as the charging voltage of the super capacitor 120 is equal to or greater than a predetermined second value, when the switching from the sleep mode to the active mode is frequent, the super capacitor 120 is charged. This is because the voltage will quickly drop again to a value less than the second predetermined value, and the IoT lighting switch module 100 will have a state in which the wireless communication function is disabled and not remotely controlled by the user.

Depending on the embodiment, different from that shown in FIG. 12, a comparison between the charging voltage of the super capacitor 120 and a predetermined second value is performed first, or the charging voltage of the super capacitor 120 and a predetermined first value and The comparison with the second value may be performed simultaneously.

13 is a conceptual diagram schematically showing another example of an application environment of an IoT lighting switch module according to an embodiment of the present invention.

Referring to FIG. 13, the IoT lighting switch module 300 according to an embodiment of the present invention may be provided in a socket type for lighting or as an internal configuration of the socket.

According to the present invention described above, the supercapacitor receives the normal current from the active line when the relay switch is turned on, and when the relay switch is turned off, the leakage current is supplied from the lighting and stored. When switching to the active mode requiring consumption, current can be supplied from the super capacitor, and the controller can receive leakage current from the lighting even when the relay switch is turned off, so that the neutral wire is directly connected to supply constant power. It is possible to provide an IoT lighting switch module that enables remote control of lighting without receiving, and also, without using battery power by embedding a large-capacity battery.

In addition, an IoT lighting switch module that enables the controller to efficiently receive current from the super capacitor and prevents the super capacitor from overdischarging by controlling the power switch on and off by checking the charging voltage of the super capacitor. Can provide.

The steps of a method or algorithm described in connection with an embodiment of the present invention may be implemented directly in hardware, implemented as a software module executed by hardware, or a combination thereof. Software modules include Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Flash Memory, hard disk, removable disk, CD-ROM, or It may reside on any type of computer-readable recording medium well known in the art to which the present invention pertains.

In the above, embodiments of the present invention have been described with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You can understand. Therefore, the embodiments described above are illustrative in all respects, and should be understood as non-limiting.

10: lighting
20: user device
100: IoT light switch module
110: first regulator
120: super capacitor
130: second regulator
140: controller
141: wireless communication module
142: third regulator
143: switch control module
144: power input terminal
150: switch driver
160: AC-DC converter
170: first constant voltage/constant current circuit
171: first constant voltage regulator
172: first constant current circuit
180: second constant voltage/constant current circuit
181: second constant voltage regulator
182: second constant current circuit
190: boost converter
300: IoT light switch module

Claims (10)

As an IoT lighting switch module connected between (i) an active wire and (ii) one power terminal of the other power terminal of the lighting connected to a neutral wire,
A relay switch connected between the active line and the other power terminal of the lighting;
It is connected to the active line and the other power terminal of the lighting, respectively, is charged by receiving a normal current from the active line when the relay switch is turned on, and the relay switch is turned off. A super capacitor that is charged by receiving a leakage current from the other power terminal of the lighting when it is turned on;
When the active line and the other power terminal of the light are connected to each other, when the relay switch is turned on, a normal current is supplied from the active line to output power of a predetermined first voltage, and when the relay switch is turned off A first regulator configured to receive the leakage current from the other power terminal of the lighting and output power of the predetermined first voltage;
It wirelessly communicates with a user device, controls on/off of the relay switch according to a control command from the user device, checks a charging voltage of the super capacitor, is connected to the first regulator, and is connected to the first regulator in advance. A controller receiving power of a predetermined first voltage; And
Including a capacitor switch connected between the super capacitor and the power input terminal of the controller,
The controller,
A wireless communication module that wirelessly communicates with the user device and receives the control command from the user device,
A power switch connected between the power input terminal of the controller and the power input terminal of the wireless communication module,
It is connected to the power input terminal of the controller, checks the charging voltage of the super capacitor, controls on and off the capacitor switch according to the operation mode of the wireless communication module, and controls the power switch according to the charging voltage of the super capacitor. Including a switch control module for on-off control,
The capacitor switch,
When the operation mode of the wireless communication module is switched from the sleep mode to the active mode, it is turned on so that the wireless communication module can receive a current required for switching from the super capacitor to the active mode, and ,
When the operation mode of the wireless communication module is switched from the active mode to the sleep mode, it is turned off so that the wireless communication module can receive current for operating in the sleep mode from the first regulator,
The power switch,
When the charging voltage of the super capacitor is greater than a predetermined first value, it is turned on to supply power to the wireless communication module from the super capacitor or the first regulator, and the charging voltage of the super capacitor is a second predetermined value When it is less than, it is turned off so that power is not supplied to the wireless communication module from the super capacitor and the first regulator, and when the charging voltage of the super capacitor is less than the first value and more than the second value, it is turned off. IoT lighting switch module that keeps the state as it is. The method of claim 1,
The IoT lighting switch module further comprises a boost converter connected between the capacitor switch and the power input terminal of the controller to boost and output the charging voltage of the super capacitor. The method of claim 1,
The IoT lighting switch module further comprising a first constant voltage regulator connected between the active line and the super capacitor and maintaining an output voltage constant to correspond to a predetermined ratio of the rated voltage of the super capacitor. The method of claim 3,
The IoT lighting switch module further comprising a first constant current circuit connected between the first constant voltage regulator and the super capacitor and constantly maintaining an output current supplied to the super capacitor. The method of claim 1,
The IoT lighting switch module further comprises a second constant voltage regulator connected between the power terminal of the other side of the lighting and the super capacitor, and maintaining an output voltage constant to correspond to a predetermined ratio of the rated voltage of the super capacitor. The method of claim 5,
The IoT lighting switch module further comprising a second constant current circuit connected between the second constant voltage regulator and the super capacitor and constantly maintaining an output current supplied to the super capacitor. The method of claim 6,
It is connected between the other power terminal of the lighting and the second constant voltage regulator and between the other power terminal of the lighting and the controller, and supplies the leakage current from the other power terminal of the lighting when the relay switch is turned off. The IoT lighting switch module further comprises an AC-DC converter for receiving and outputting the leakage current by AC-DC conversion. delete The method of claim 1,
The controller,
The IoT lighting switch module further comprises a regulator connected in parallel with the power switch between the power input terminal of the controller and the switch control module, and maintaining a constant output voltage supplied to the switch control module. The method of claim 1,
The wireless communication includes at least one of Wi-Fi, Li-Fi, Bluetooth, UWB (Ultra Wide Band), Zigbee and Z-wave communication type, IoT lighting switch module.

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