CN218514547U - Multi-channel control switching circuit and lighting system - Google Patents
Multi-channel control switching circuit and lighting system Download PDFInfo
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- CN218514547U CN218514547U CN202220749081.5U CN202220749081U CN218514547U CN 218514547 U CN218514547 U CN 218514547U CN 202220749081 U CN202220749081 U CN 202220749081U CN 218514547 U CN218514547 U CN 218514547U
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Abstract
The application discloses a multi-channel control switching circuit, which comprises a power supply module, a multi-channel module and a circulating switching module, wherein the multi-channel module comprises a first channel module, a second channel module and a third channel module; the power input end of the circulation switching module is connected with the power supply module, the first output end of the circulation switching module is connected with the first switch unit, the second output end of the circulation switching module is connected with the second switch unit, the third output end of the circulation switching module is connected with the third switch unit, and the circulation switching module respectively drives the first output end, the second output end and the third output end to output high level or low level according to the change of input voltage of the power input end.
Description
Technical Field
The present application relates to, but not limited to, the field of lighting technologies, and in particular, to a multi-channel control switching circuit and a lighting system.
Background
In the related art, each path of the multi-path control switching circuit usually corresponds to a switch, and when it is required to switch from an original path to a target path, multiple switches are usually required to be switched at the same time, for example, a switch for closing the original path and a switch for opening the target path are required to be turned on first, which is complicated in circuit and inconvenient to operate.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a multi-channel control switching circuit and a lighting system, which do not need to switch a plurality of switches simultaneously when switching channels.
An embodiment of a first aspect of the present application provides a multi-channel control switching circuit, including:
a power supply module;
the multi-channel module comprises a first channel module, a second channel module and a third channel module, the power supply module is respectively connected with the first channel module, the second channel module and the third channel module, the first channel module is provided with a first switch unit, the second channel module is provided with a second switch unit, and the third channel module is provided with a third switch unit;
the power supply device comprises a circulating switching module, wherein a power input end of the circulating switching module is connected with a power supply module, a first output end of the circulating switching module is connected with a first switch unit, a second output end of the circulating switching module is connected with a second switch unit, a third output end of the circulating switching module is connected with a third switch unit, and the circulating switching module is used for driving the first output end, the second output end and the third output end to output high level or low level respectively according to the change of input voltage of the power input end.
The multi-channel control switching circuit according to the embodiment of the first aspect of the present application has at least the following advantages: and the power supply module supplies power to the multi-channel module and the circulating switching module. When the first output end outputs a high level, the first pass module is conducted; when the second output end outputs high level, the second path module is conducted; and when the third output end outputs a high level, the third path module is conducted. The power input end of the circulating switching module is connected with the power supply module, the circulating switching module detects input voltage of the power input end, responds to the change of the input voltage of the power input end, and respectively drives the first output end, the second output end and the third output end to output high level or low level, so that switching on of the first access module, the second access module and the third access module is achieved, and multiple switches do not need to be switched simultaneously when access switching is carried out.
According to some embodiments of the first aspect of the present application, the serial input of the cycle switching module is connected to ground,
the cyclic switching module is configured to drive the first output terminal and the second output terminal to output a high level or a low level, respectively, and includes one of:
driving the first output end to output a high level and the second output end to output a low level; or,
driving the first output end to output a low level and the second output end to output a high level; or,
and driving the first output end to output a high level, and driving the second output end to output a high level.
According to some embodiments of the first aspect of the present application, a serial input of the cycle switching module is connected with the power supply module,
the cyclic switching module is configured to drive the first output terminal, the second output terminal, and the third output terminal to output a high level or a low level, respectively, and includes one of:
driving the first output end to output a high level, the second output end to output a low level and the third output end to output a low level; or,
driving the first output end to output a low level, the second output end to output a high level, and the third output end to output a low level; or,
driving the first output end to output a high level, the second output end to output a high level, and the third output end to output a low level; or,
and driving the first output end to output a low level, the second output end to output a low level and the third output end to output a high level.
According to some embodiments of the first aspect of the present application, the power supply module further comprises a switch, and the power supply input terminal is connected to the power supply module through the switch.
According to some embodiments of the first aspect of the present application, the cycle switching module comprises a micro control unit.
According to some embodiments of the first aspect of the present application, the first, second and third switching units are all field effect transistors.
According to some embodiments of the first aspect of the present application, the first path module is further provided with a first load branch, the first load branch includes a first load unit and a first constant current unit, the first load unit is connected in series with the first constant current unit, an input end of the first load unit is connected to the power supply module, an output end of the first constant current unit is connected to a drain of the first switch unit, a gate of the first switch unit is connected to the first output end, and a source of the first switch unit is grounded;
the second path module is further provided with a second load branch, the second load branch comprises a second load unit and a second constant current unit, the second load unit is connected with the second constant current unit in series, the input end of the second load unit is connected with the power supply module, the output end of the second constant current unit is connected with the drain electrode of the second switch unit, the grid electrode of the second switch unit is connected with the second output end, and the source electrode of the second switch unit is grounded;
the third load unit is connected with the third constant current unit in series, the input end of the third load unit is connected with the power supply module, the output end of the third constant current unit is connected with the drain electrode of the third switching unit, the gate electrode of the third switching unit is connected with the third output end, and the source electrode of the third switching unit is grounded.
According to some embodiments of the first aspect of the present application, the first load unit, the second load unit, and the third load unit are all LED units.
According to some embodiments of the first aspect of the present application, the power supply module includes a rectifier bridge, a first switching tube and a fourth constant current unit, the rectifier bridge is used for accessing the commercial power, a gate and a drain of the first switching tube are both connected to a current output end of the rectifier bridge, and a source of the first switching tube is connected to the power input end through the fourth constant current unit.
An embodiment of a second aspect of the present application provides a lighting system, including:
the multi-channel control switching circuit according to the embodiment of the first aspect of the present application.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The present application is further described with reference to the following figures and examples, in which:
FIG. 1 is a circuit block diagram of a multi-channel control switching circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic circuit diagram of a multi-channel control switching circuit according to an embodiment of the present application.
Reference numerals:
a power supply module 100; a rectifier bridge 110; a first switching tube 120; a fourth constant current unit 130;
a multi-pass module 200; a first pass-through module 210; a first switch unit 211; a first constant current unit 212; a first load unit 213; a second pass-through module 220; a second switching unit 221; a second constant current unit 222; the second load unit 223; a third pass module 230; a third switching unit 231; a third constant current unit 232; a third load unit 233;
the switching module 300 is cycled.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," 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 present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In a first aspect, referring to fig. 1 to 2, an embodiment of the present application provides a multi-path control switching circuit, which includes a power supply module 100, a multi-path module 200, and a cycle switching module 300. The multi-path module 200 comprises a first path module 210, a second path module 220 and a third path module 230, the power supply module 100 is respectively connected with the first path module 210, the second path module 220 and the third path module 230, the power supply module 100 is used for supplying power to the first path module 210, the second path module 220 and the third path module 230, the first path module 210 is provided with a first switch unit 211, the second path module 220 is provided with a second switch unit 221, and the third path module 230 is provided with a third switch unit 231; the power input end of the cyclic switching module 300 is connected to the power supply module 100, the first output end of the cyclic switching module 300 is connected to the first switch unit 211, the second output end of the cyclic switching module 300 is connected to the second switch unit 221, the third output end of the cyclic switching module 300 is connected to the third switch unit 231, the cyclic switching module 300 is configured to drive the first output end, the second output end, and the third output end to output a high level or a low level according to a change of an input voltage of the power input end, thereby realizing switching on of the first path module 210, the second path module 220, and the third path module 230, and avoiding simultaneous switching of a plurality of switches when performing path switching.
The multi-channel control switching circuit of the embodiment of the application supplies power to the multi-channel module 200 and the circulation switching module 300 through the power supply module 100. When the first output terminal outputs a high level, the first switch unit 211 drives the first pass module 210 to be turned on; when the first output terminal outputs a low level, the first switching unit 211 drives the first path module 210 to be turned off; when the second output terminal outputs a high level, the second switch unit 221 drives the second pass module 220 to be turned on; when the second output terminal outputs a low level, the second switching unit 221 drives the second pass module 220 to turn off; when the third output terminal outputs a high level, the third switching unit 231 drives the third pass module 230 to be turned on; when the third output terminal outputs a low level, the third switching unit 231 drives the third path module 230 to be turned off. The power input end of the cyclic switching module 300 is connected to the power supply module 100, and the cyclic switching module 300 detects the input voltage of the power input end, and cyclically changes the driving state in response to the change of the input voltage of the power input end, so as to respectively drive the first output end, the second output end, and the third output end to output a high level or a low level, thereby realizing switching on of the first path module 210, the second path module 220, and the third path module 230.
It is understood that the serial input of the cyclic switching module 300 is grounded, for example, the serial input of the cyclic switching module 300 is grounded through the first resistor RS2, or the serial input of the cyclic switching module 300 is grounded through a switch (not shown). The serial input terminal of the cyclic switching module 300 is grounded to pull the serial input terminal low, so as to respectively drive the first output terminal and the second output terminal to output a high level or a low level, and the driving state can be set to at least one of the following three states:
driving the first output terminal to output a high level and the second output terminal to output a low level, so that the first path module 210 is turned on and the second path module 220 is turned off; or,
driving the first output end to output a low level and the second output end to output a high level, so as to turn off the first path module 210 and turn on the second path module 220; or,
the first output terminal is driven to output a high level, and the second output terminal outputs a high level, so that the first path module 210 is turned on and the second path module 220 is turned on. The cyclic switching module 300 of the embodiment of the application detects the input voltage at the power input end, and switches the driving state once when the input voltage at the power input end changes once, and the driving state is cyclically switched among the three states.
It is understood that in other embodiments, the serial input terminal of the cyclic switching module 300 is connected to the power supply module 100, for example, the serial input terminal of the cyclic switching module 300 may be connected to the power supply module 100 through the second resistor RS1, or the serial input terminal of the cyclic switching module 300 may be connected to the power supply module 100 through a switch (not shown). The serial input terminal of the cyclic switching module 300 is connected to the power supply module 100, so as to pull up the serial input terminal, and then drive the first output terminal, the second output terminal, and the third output terminal to output a high level or a low level, where the driving state may be set to at least one of the following 4 states:
driving the first output terminal to output a high level, the second output terminal to output a low level, and the third output terminal to output a low level, so as to turn on the first path module 210, turn off the second path module 220, and turn off the third path module 230; or,
driving the first output terminal to output a low level, the second output terminal to output a high level, and the third output terminal to output a low level, so as to turn off the first path module 210, turn on the second path module 220, and turn off the third path module 230; or,
driving the first output terminal to output a high level, the second output terminal to output a high level, and the third output terminal to output a low level, so as to turn on the first path module 210, turn on the second path module 220, and turn off the third path module 230; or,
the first output terminal is driven to output a low level, the second output terminal outputs a low level, and the third output terminal outputs a high level, so that the first path module 210 is turned off, the second path module 220 is turned off, and the third path module 230 is turned on. The cyclic switching module 300 of the embodiment of the application detects the input voltage at the power input end, and switches the driving state once when the input voltage at the power input end changes once, and the driving state is cyclically switched among the above 4 states.
It is understood that a switch (not shown) is further included, and the power input terminal of the cyclic switching module 300 is connected to the power supply module 100 through the switch. The switch is used to connect or disconnect the power input end of the circular switch module 300 to the power supply module 100, so that the input voltage at the power input end changes, when the switch is connected between the power input end and the power supply module 100, the input voltage at the power input end is the output voltage of the power supply module 100, and when the switch is disconnected between the power input end and the power supply module 100, the input voltage at the power input end is zero. In this manner, the cyclic switching module 300 is facilitated to cyclically change the driving state in response to a change in the input voltage of the power input terminal.
It is understood that the cycle switching module 300 may be a micro control unit capable of implementing a cycle change of the driving state in response to a change of the input voltage of the power input terminal, and the specific driving state can be set by the micro control unit, and the setting of the driving state is a function which the micro control unit has originally, and does not involve an improvement of an internal program of the micro control unit.
It is understood that the first switching unit 211, the second switching unit 221, and the third switching unit 231 are all field effect transistors.
It can be understood that the first path module 210 is further provided with a first load branch, the first load branch includes a first load unit 213 and a first constant current unit 212, the first load unit 213 is connected in series with the first constant current unit 212, an input end of the first load unit 213 is connected with the power supply module 100, an output end of the first constant current unit 212 is connected with a drain of the first switch unit 211, a gate of the first switch unit 211 is connected with the first output end, and a source of the first switch unit 211 is grounded; when the first output terminal outputs a high level, the gate of the first switch unit 211 is at a high level, and the first switch unit 211 is turned on, so that the first pass module 210 is turned on, and the first load unit 213 can operate normally. When the first output terminal outputs a low level, the gate of the first switch unit 211 is at a low level, and the first switch unit 211 is turned off, so that the first pass module 210 is turned on and the first load unit 213 cannot operate.
It can be understood that the second path module 220 is further provided with a second load branch, the second load branch includes a second load unit 223 and a second constant current unit 222, the second load unit 223 is connected in series with the second constant current unit 222, an input end of the second load unit 223 is connected with the power supply module 100, an output end of the second constant current unit 222 is connected with a drain of the second switch unit 221, a gate of the second switch unit 221 is connected with a second output end, and a source of the second switch unit 221 is grounded; when the second output terminal outputs a high level, the gate of the second switch unit 221 is at a high level, and the second switch unit 221 is turned on, so that the second path module 220 is turned on, and the second load unit 223 can operate normally. When the second output terminal outputs a low level, the gate of the second switch unit 221 is at a low level, and the second switch unit 221 is turned off, so that the second path module 220 is turned on and the second load unit 223 cannot operate.
It can be understood that the third path module 230 is further provided with a third load branch, the third load branch includes a third load unit 233 and a third constant current unit 232, the third load unit 233 is connected in series with the third constant current unit 232, an input end of the third load unit 233 is connected with the power supply module 100, an output end of the third constant current unit 232 is connected with a drain of the third switching unit 231, a gate of the third switching unit 231 is connected with a third output end, and a source of the third switching unit 231 is grounded. When the third output terminal outputs a high level, the gate of the third switching unit 231 is at a high level, and the third switching unit 231 is turned on, so that the third path module 230 is turned on, and the third load unit 233 can normally operate. When the third output terminal outputs a low level, the gate of the third switching unit 231 is at a low level, and the third switching unit 231 is turned off, so that the third path module 230 is turned on, and the third load unit 233 cannot operate.
It can be understood that the power supply module 100 includes a rectifier bridge 110, a first switching tube 120 and a fourth constant current unit 130, where the rectifier bridge 110 is used to connect to the mains, a gate and a drain of the first switching tube 120 are both connected to a current output terminal of the rectifier bridge 110, and a source of the first switching tube 120 is connected to a power input terminal of the cyclic switching module 300 through the fourth constant current unit 130. The power supply module 100 converts the commercial power into direct current through the rectifier bridge 110, and supplies power to the first path module 210, the second path module 220, and the third path module 230; the circulation switching module 300 is supplied with power through the rectifier bridge 110, the first switching tube 120 and the fourth constant current unit 130.
Specifically, referring to fig. 2, a first end of the rectifier bridge 110 is connected to a live wire of the commercial power through the safety unit, a second end of the rectifier bridge 110 is connected to a neutral wire of the commercial power, a third end of the rectifier bridge 110 is grounded, and a current input end of the rectifier bridge 110 is connected to an input end of the first load branch, an input end of the second load branch, and an input end of the second load branch, so that the first pass module 210, the second pass module 220, and the third pass module 230 are connected in parallel; the current input end of the rectifier bridge 110 is connected with the drain electrode of the first switching tube 120, the current input end of the rectifier bridge 110 is also connected with the gate electrode of the first switching tube 120 through a third resistor R1 and a fourth resistor R2, and the third resistor R1 and the fourth resistor R2 are connected in series; the gate of the first switch tube 120 is grounded through a fifth resistor R6, a first diode ZD1 and a first capacitor C2, the fifth resistor R6, the first diode ZD1 and the first capacitor C2 are connected in parallel, wherein the input end of the first diode ZD1 is grounded, and the output end of the first diode ZD1 is connected with the gate of the first switch tube 120; the input end of the fourth constant current unit 130 is connected to the source of the first switching tube 120, the output end of the fourth constant current unit 130 is grounded through a second capacitor C3, the output end of the fourth constant current unit 130 is further connected to the input end of a second diode D1, the output end of the second diode D1 is connected to the power input end of the cyclic switching module 300, the power input end of the cyclic switching module 300 is further grounded through a third diode ZD2 and a third capacitor C1, the third diode ZD2 is connected in parallel to the third capacitor C1, the input end of the third diode ZD2 is grounded, and the output end of the third diode ZD2 is connected to the power input end of the cyclic switching module 300. The fuse unit may be a fuse, and the first diode ZD1 and the third diode ZD2 have a voltage stabilizing function.
It should be noted that the circuit diagram of the power supply module 100 shown in fig. 2 is only an example, and should not be construed as limiting the present application. The first constant current unit 212, the second constant current unit 222, the third constant current unit 232, and the fourth constant current unit 130 each include a constant current chip and a resistor.
It is understood that the first load unit 213, the second load unit 223, and the third load unit 233 are all LED units. When the cyclic switching module 300 detects the input voltage of the power input terminal, the driving state is cyclically changed in response to the change of the input voltage of the power input terminal, so as to respectively drive the first output terminal, the second output terminal, and the third output terminal to output a high level or a low level, thereby implementing switching of the operating states of the first load unit 213, the second load unit 223, and the third load unit 233.
In a second aspect, embodiments of the present application provide a lighting system, which includes a multi-channel control switching circuit as in an embodiment of the first aspect. Since the lighting system includes the multi-channel control switching circuit of the embodiment of the first aspect, the corresponding contents of the multi-channel control switching circuit in the above-mentioned embodiment are also applicable to the lighting system in the above-mentioned embodiment, and have the same implementation principle and technical effect, and are not described in detail here to avoid redundancy of description contents.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (10)
1. A multi-pass control switching circuit, comprising:
a power supply module;
the multi-channel module comprises a first channel module, a second channel module and a third channel module, the power supply module is respectively connected with the first channel module, the second channel module and the third channel module, the first channel module is provided with a first switch unit, the second channel module is provided with a second switch unit, and the third channel module is provided with a third switch unit;
the power supply device comprises a circulating switching module, wherein a power input end of the circulating switching module is connected with a power supply module, a first output end of the circulating switching module is connected with a first switch unit, a second output end of the circulating switching module is connected with a second switch unit, a third output end of the circulating switching module is connected with a third switch unit, and the circulating switching module is used for driving the first output end, the second output end and the third output end to output high level or low level respectively according to the change of input voltage of the power input end.
2. The multi-pass control switching circuit of claim 1, wherein the serial input of the cyclic switching module is grounded,
the cyclic switching module is configured to drive the first output terminal and the second output terminal to output a high level or a low level, respectively, and includes one of:
driving the first output end to output a high level and the second output end to output a low level; or,
driving the first output end to output a low level and the second output end to output a high level; or,
and driving the first output end to output a high level, and driving the second output end to output a high level.
3. The multi-pass control switching circuit of claim 1, wherein a serial input of the cycle switching module is connected to the power supply module,
the cyclic switching module is configured to drive the first output terminal, the second output terminal, and the third output terminal to output a high level or a low level, respectively, and includes one of:
driving the first output end to output a high level, the second output end to output a low level and the third output end to output a low level; or,
driving the first output end to output a low level, the second output end to output a high level and the third output end to output a low level; or,
driving the first output end to output a high level, the second output end to output a high level, and the third output end to output a low level; or,
and driving the first output end to output a low level, the second output end to output a low level and the third output end to output a high level.
4. The multi-pass control switching circuit of claim 1, further comprising a switch, wherein the power input is connected to the power supply module through the switch.
5. The multi-pass control switching circuit of claim 1, wherein the cycle switching module comprises a micro control unit.
6. The multi-channel control switching circuit of claim 1, wherein the first switch unit, the second switch unit, and the third switch unit are all field effect transistors.
7. The multi-pass control switching circuit of claim 6,
the first channel module is further provided with a first load branch, the first load branch comprises a first load unit and a first constant current unit, the first load unit is connected with the first constant current unit in series, the input end of the first load unit is connected with the power supply module, the output end of the first constant current unit is connected with the drain electrode of the first switch unit, the grid electrode of the first switch unit is connected with the first output end, and the source electrode of the first switch unit is grounded;
the second path module is further provided with a second load branch, the second load branch comprises a second load unit and a second constant current unit, the second load unit is connected with the second constant current unit in series, the input end of the second load unit is connected with the power supply module, the output end of the second constant current unit is connected with the drain electrode of the second switch unit, the grid electrode of the second switch unit is connected with the second output end, and the source electrode of the second switch unit is grounded;
the third load unit is connected in series with the third constant current unit, the input end of the third load unit is connected with the power supply module, the output end of the third constant current unit is connected with the drain electrode of the third switch unit, the grid electrode of the third switch unit is connected with the third output end, and the source electrode of the third switch unit is grounded.
8. The multi-pass control switching circuit of claim 7, wherein the first load unit, the second load unit, and the third load unit are all LED units.
9. The multi-channel control switching circuit according to claim 1, wherein the power supply module comprises a rectifier bridge, a first switching tube and a fourth constant current unit, the rectifier bridge is used for connecting with a mains supply, a gate and a drain of the first switching tube are both connected with a current output end of the rectifier bridge, and a source of the first switching tube is connected with the power input end through the fourth constant current unit.
10. An illumination system, comprising:
the multi-pass control switching circuit of any one of claims 1 to 9.
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| CN202220749081.5U CN218514547U (en) | 2022-04-01 | 2022-04-01 | Multi-channel control switching circuit and lighting system |
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| CN202220749081.5U CN218514547U (en) | 2022-04-01 | 2022-04-01 | Multi-channel control switching circuit and lighting system |
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