Multi-channel power supply

Abstract

The multi-channel power supply comprises a plurality of light source driving circuits, a first common end, a second common end, a main control circuit and a near field communication circuit. Each light source driving circuit is connected with a load and is provided with a live wire terminal and a neutral wire terminal. One end of the first common end is connected with a live wire output end of an external power supply, and the other end is connected with live wire terminals of the light source driving circuits. And one end of the second common end is connected with the neutral line output end of the external power supply, and the other end is connected with the neutral line terminal of each light source driving circuit. And the main control circuit is connected with the plurality of light source driving circuits. And the near field communication circuit is connected with the main control circuit.

Description

TECHNICAL FIELD

[0001] The utility model relates to a power supply, in particular to a multi-channel power supply. BACKGROUND

[0002] The power supply structure adopted by the existing street lamp system is mostly one power supply corresponding to one load. Therefore, multiple street lamps with different powers need to be configured with multiple different power supplies.

[0003] In addition, if any power supply of the street lamp system fails, the failed power supply will also affect other non-failed power supplies.

[0004] In addition, the lamp pole of the street lamp is mostly made of metal material, so it is easy to cause electric shock danger and cannot meet the existing safety standards.

[0005] Furthermore, since the use environment of the street lamp arranged outdoors is relatively harsh, it needs to achieve a high waterproof level. However, due to design limitations, the waterproof effect of the existing street lamp cannot be significantly improved and cannot meet the actual application requirements. INVENTION CONTENTS

[0006] According to an embodiment of the utility model, a multi-channel power supply is provided, which comprises multiple light source driving circuits, a first common end, a second common end, a main control circuit, and a near-field communication circuit. Each light source driving circuit is connected with a load and has a live terminal and a neutral terminal. One end of the first common end is connected with the live output end of an external power supply, and the other end thereof is connected with the live terminal of each light source driving circuit. One end of the second common end is connected with the neutral output end of the external power supply, and the other end thereof is connected with the neutral terminal of each light source driving circuit. The main control circuit is connected with the multiple light source driving circuits. The near-field communication circuit is connected with the main control circuit.

[0007] In an embodiment, the multi-channel power supply further comprises an auxiliary power supply. The auxiliary power supply is connected with the main control circuit.

[0008] In an embodiment, the auxiliary power supply is a battery.

[0009] In an embodiment, the other end of the first common end is connected with the live terminal of each light source driving circuit through a fuse.

[0010] In an embodiment, the light source driving circuit further has a rectifier filter circuit, a boost driving circuit, and an isolated constant current driving circuit. The rectifier filter circuit is connected with the live terminal and the neutral terminal of the light source driving circuit. The boost driving circuit is connected with the rectifier filter circuit, and the isolated constant current driving circuit is connected with the boost driving circuit and the load.

[0011] In an embodiment, the main control circuit is connected with the isolated constant current driving circuit of each light source driving circuit.

[0012] In an embodiment, the master control circuit is further connected to the boost driving circuits of the light source driving circuits.

[0013] In an embodiment, the load is a light source board, and the light source board comprises a plurality of light emitting components and a circuit board, and the plurality of light emitting components are disposed on the circuit board.

[0014] In an embodiment, the plurality of light emitting components are light emitting diodes.

[0015] In an embodiment, the master control circuit is a microcontroller, a central processing unit, an application specific integrated circuit chip, a field programmable gate array, or other similar components.

[0016] As described above, the multi-channel power supply of the present application can have one or more of the following advantages:

[0017] (1) In an embodiment of the present application, the multi-channel power supply comprises a plurality of light source driving circuits, a first common terminal, a second common terminal, a master control circuit, and a near field communication circuit. Each of the light source driving circuits is connected to a load and has a hot terminal and a neutral terminal. One end of the first common terminal is connected to a hot output terminal of an external power supply, and the other end thereof is connected to the hot terminals of the light source driving circuits. One end of the second common terminal is connected to a neutral output terminal of the external power supply, and the other end thereof is connected to the neutral terminals of the light source driving circuits. The master control circuit is connected to the plurality of light source driving circuits. The near field communication circuit is connected to the master control circuit. As described above, the multi-channel power supply has a plurality of light source driving circuits for driving a plurality of loads, respectively, and the plurality of light source driving circuits do not affect each other. Therefore, when any of the light source driving circuits fails, the other light source driving circuits can still operate normally. Therefore, the multi-channel power supply is very suitable for street lamps and other similar applications, and can meet the requirements of practical applications.

[0018] (2) In an embodiment of the present application, the multi-channel power supply has a master control circuit and a near field communication circuit. The master control circuit is connected to the near field communication circuit. Therefore, a user can communicate with the near field communication circuit through various electronic devices to set the power and other parameters of each of the light source driving circuits, and can read the current power setting and other parameters of each of the light source driving circuits. Therefore, the user can more conveniently manage and maintain the multi-channel power supply, and the plurality of light source driving circuits can correspond to different powers.

[0019] (3) In an embodiment of the present application, the multi-channel power supply has a near field communication circuit, so that a user can communicate with the near field communication circuit through various electronic devices to perform abnormality detection, dimming, or other control functions. Therefore, the multi-channel power supply is not only more convenient to use, but also can be more widely applied.

[0020] (4) In an embodiment of the utility model, the multi-channel power supply has a near field communication circuit, so it does not need to communicate with other devices through an external communication circuit. In this way, the multi-channel power supply can be compatible with a structure with better waterproof effect to achieve a higher waterproof level, so the multi-channel power supply is not only suitable for application in various buildings, but also very suitable for application in street lamps and other outdoor facilities. Therefore, the multi-channel power supply can be more widely used, and it is more flexible to use.

[0021] (5) In an embodiment of the utility model, the multi-channel power supply adopts a direct current isolation power supply mode, so the possibility of electric shock can be greatly reduced. Therefore, the safety of the multi-channel power supply can be effectively improved, and it can meet the existing safety standards.

[0022] (6) In an embodiment of the utility model, the circuit of the multi-channel power supply is simple, so the desired effect can be achieved without greatly increasing the cost. Therefore, the multi-channel power supply can not only meet the needs of different applications, but also meet the trend of future development. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a block diagram of the circuit structure of the multi-channel power supply of an embodiment of the utility model.

[0024] Figure 2 is a schematic diagram of the structure of the load of the multi-channel power supply of an embodiment of the utility model.

[0025] Figure 3 is a block diagram of the circuit structure of the multi-channel power supply of another embodiment of the utility model.

[0026] BRIEF DESCRIPTION OF DRAWINGS:

[0027] 1 - multi-channel power supply; 11 - light source driving circuit; 111 - rectifier filter circuit; 112 - boost driving circuit; 113 - isolation constant current driving circuit; 12 - main control circuit; 13 - near field communication circuit; 14 - auxiliary power supply; C1 - first common terminal; C2 - second common terminal; Lt - live terminal; Nt - neutral terminal; L1 - live output terminal; N1 - neutral output terminal; LD - load; ED - light emitting component; PB - circuit board; Fs - fuse.

[0028] The detailed features and advantages of the utility model are described in detail in the embodiments below, which are sufficient to enable any person skilled in the relevant art to understand the technical content of the utility model and implement it, and according to the content disclosed in the specification, claims and drawings, any person skilled in the relevant art can easily understand the related purposes and advantages of the utility model. DETAILED DESCRIPTION

[0029] The following description, with reference to the accompanying drawings, illustrates embodiments of the multi-channel power supply according to this invention. For clarity and ease of illustration, the dimensions and proportions of the components in the drawings may be exaggerated or reduced. In the following description and / or claims, when a component is referred to as "connected" or "coupled" to another component, it may be directly connected or coupled to that other component or there may be an intervening component; when a component is referred to as "directly connected" or "directly coupled" to another component, there is no intervening component. Other terms used to describe the relationship between components or layers should be interpreted in the same manner. For ease of understanding, the same components in the following embodiments are indicated by the same symbols.

[0030] Please see Figure 1 The figure shows a block diagram of the circuit structure of a multi-channel power supply according to an embodiment of the present invention. As shown in the figure, the multi-channel power supply 1 includes multiple light source driving circuits 11, a first common terminal C1, a second common terminal C2, a main control circuit 12, and a near-field communication circuit 13. Figure 1 Only two light source driving circuits 11 are shown. However, Figure 1 For example only, the number of the above-mentioned multiple light source driving circuits 11 can be more than two, which can be changed according to actual needs.

[0031] Each light source driving circuit 11 is connected to the load LD and has a live wire terminal Lt and a neutral wire terminal Nt, a rectifier and filter circuit 111, a boost driver circuit 112, and an isolated constant current driver circuit 113. The rectifier and filter circuit 111 is connected to the live wire terminal Lt and the neutral wire terminal Nt. The boost driver circuit 112 is connected to the rectifier and filter circuit 111, and the isolated constant current driver circuit 113 is connected to both the boost driver circuit 112 and the load LD. In this embodiment, the rectifier and filter circuit 111 may include a rectifier (such as a bridge rectifier) ​​and a filter. In this embodiment, the boost driver circuit 112 may be a boost converter. In this embodiment, the isolated constant current driver circuit 113 may be a light-emitting diode driver. In this embodiment, the load LD may be a light source board. In another embodiment, the load LD may also be a fluorescent lamp, a light bulb, or other similar components.

[0032] One end of the first common terminal C1 is connected to the live wire output terminal L1 of the external power supply, and the other end is connected to the live wire terminal Lt of each light source driving circuit 11 through the fuse Fs. In this embodiment, the external power supply can be AC ​​mains power. In another embodiment, the external power supply can also be a generator or other similar components.

[0033] One end of the second common terminal C2 is connected to the neutral line output terminal N1 of the external power supply, and the other end is connected to the neutral line terminal Nt of each light source driving circuit 11.

[0034] The main control circuit 12 is connected with the plurality of light source driving circuits 11. The main control circuit 12 is connected with the boost driving circuit 112 of each light source driving circuit 11 to receive abnormal signals or to perform various controls. The main control circuit 12 is also connected with the isolation constant current driving circuit 113 of each light source driving circuit 11 to perform current detection and dimming control. In the embodiment, the main control circuit 12 can be a microcontroller (MCU). In another embodiment, the main control circuit 12 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other similar components.

[0035] The near field communication (NFC) circuit 13 is connected with the main control circuit 12. The near field communication circuit 13 can be a near field communication probe.

[0036] Since the circuit structure of the above components should be known to those skilled in the art, the embodiment only describes the circuit structure and connection relationship of each component, and does not describe the internal circuit structure of each component.

[0037] As described above, through the circuit structure design of the multi-channel power supply 1, the multi-channel power supply 1 can have a plurality of independent light source driving circuits 11, and these light source driving circuits 11 will not affect each other and can operate independently. Therefore, when any one of the light source driving circuits 11 fails, the other light source driving circuits 11 can still operate normally and will not be disturbed by the failed light source driving circuit 11. Therefore, the multi-channel power supply 1 can not only be applied to various indoor places, but also be suitable for street lamps and other similar outdoor applications, so the multi-channel power supply 1 can meet the needs of actual applications.

[0038] In addition, the user can communicate with the near field communication circuit 13 through various electronic devices (such as smart phones, tablet computers, etc.) to set the power and other various parameters for each light source driving circuit 11, and can read the current power setting and other various parameters of each light source driving circuit 11. The setting range of the pulse width modulation signal can be 0-100%, and the plurality of light source driving circuits 11 can correspond to different powers. Therefore, the power range of the multi-channel power supply 1 can be greatly improved, making the design of the power supply system more flexible. In addition, the user can also more conveniently manage and maintain the multi-channel power supply 1.

[0039] Similarly, the user can communicate with the near field communication circuit 13 through various electronic devices to perform abnormal detection, dimming, or other various control functions. Therefore, the multi-channel power supply 1 is not only more convenient to use, but also can be more widely applied.

[0040] In addition, in the present embodiment, the multi-channel power supply 1 has a near field communication circuit, so it does not need to communicate with other devices through an external communication circuit. In this way, the multi-channel power supply 1 can be compatible with a structure with better waterproof effect to achieve a higher waterproof level (such as IP68), so the multi-channel power supply 1 is not only suitable for application in various buildings, but also very suitable for application in street lamps and other outdoor facilities. Therefore, the application of the multi-channel power supply 1 can be more extensive, and the use is more flexible.

[0041] In addition, in the present embodiment, the multi-channel power supply 1 adopts a direct current isolation power supply mode, so the possibility of electric shock can be greatly reduced. Therefore, the safety of the multi-channel power supply 1 can be effectively improved, and can meet the existing safety standards.

[0042] Of course, the present embodiment is only used for illustration and does not limit the scope of the present application, and equivalent modifications or changes made according to the multi-channel power supply 1 of the present embodiment should still be included in the patent scope of the present application.

[0043] Please refer to Figure 2 , which is a schematic view of the structure of the load of the multi-channel power supply of an embodiment of the present application. As shown in the figure, in the present embodiment, the load LD can be a light source board. The light source board includes a plurality of light emitting components ED and a circuit board PB, and the light emitting components ED are arranged on the circuit board PB. The light emitting components ED can be light emitting diodes.

[0044] Of course, the present embodiment is only used for illustration and does not limit the scope of the present application, and equivalent modifications or changes made according to the multi-channel power supply 1 of the present embodiment should still be included in the patent scope of the present application.

[0045] It is worth mentioning that the power supply structure of the existing street lamp system is mostly one power supply corresponding to one load. Therefore, multiple different power street lamps need to be configured with multiple different power supplies. In addition, if any power supply of the street lamp system fails, the failed power supply will also affect other non-failed power supplies. In addition, the lamp pole of the street lamp is mostly made of metal material, so it is easy to cause electric shock danger and cannot meet the existing safety standards. Furthermore, since the use environment of the street lamp arranged outdoors is relatively harsh, it needs to reach a higher waterproof level. However, due to design limitations, the waterproof effect of the existing street lamp cannot be significantly improved and cannot meet the actual application requirements. According to the embodiments of the present application, the multi-channel power supply includes multiple light source driving circuits, a first common end, a second common end, a main control circuit, and a near field communication circuit. Each light source driving circuit is connected with a load and has a live terminal and a neutral terminal. One end of the first common end is connected with the live output end of an external power supply, and the other end is connected with the live terminal of each light source driving circuit. One end of the second common end is connected with the neutral output end of the external power supply, and the other end is connected with the neutral terminal of each light source driving circuit. The main control circuit is connected with the above-mentioned multiple light source driving circuits. The near field communication circuit is connected with the main control circuit. As can be seen from the above, the line structure of the multi-channel power supply has multiple light source driving circuits for driving multiple loads, and the above-mentioned multiple light source driving circuits do not affect each other. Therefore, when any light source driving circuit fails, the other light source driving circuits can still operate normally. Therefore, the multi-channel power supply is very suitable for application in street lamps and other similar applications, so it can meet the actual application requirements.

[0046] According to the embodiments of the present application, the multi-channel power supply has a main control circuit and a near field communication circuit. The main control circuit is connected with the near field communication circuit. Therefore, the user can communicate with the near field communication circuit through various electronic devices to set the power and other various parameters for each light source driving circuit, and can read the current power setting and other various parameters of each light source driving circuit. Therefore, the user can more conveniently manage and maintain the multi-channel power supply, and the above-mentioned multiple light source driving circuits can correspond to different powers.

[0047] In addition, according to the embodiments of the present application, the multi-channel power supply has a near field communication circuit, so the user can communicate with the near field communication circuit through various electronic devices to perform abnormality detection, dimming, or other various control functions. Therefore, the multi-channel power supply is not only more convenient to use, but also can be more widely applied.

[0048] In addition, according to the embodiment of the utility model, the multi-channel power supply has a near field communication circuit, so it does not need to communicate with other devices through an external communication circuit. In this way, the multi-channel power supply can be compatible with a structure with better waterproof effect to achieve a higher waterproof level, so the multi-channel power supply is not only suitable for application in various buildings, but also very suitable for application in street lamps and other outdoor facilities. Therefore, the multi-channel power supply can be more widely used, and it is more flexible to use.

[0049] In addition, according to the embodiment of the utility model, the multi-channel power supply adopts a direct current isolation power supply mode, so the possibility of electric shock can be greatly reduced. Therefore, the safety of the multi-channel power supply can be effectively improved, and it can meet the existing safety standards.

[0050] In addition, according to the embodiment of the utility model, the multi-channel power supply has a near field communication circuit, so it does not need to communicate with other devices through an external communication circuit. In this way, the multi-channel power supply can be compatible with a structure with better waterproof effect to achieve a higher waterproof level, so the multi-channel power supply is not only suitable for application in various buildings, but also very suitable for application in street lamps and other outdoor facilities. Therefore, the multi-channel power supply can be more widely used, and it is more flexible to use.

[0051] Please refer to Figure 3 , which is a block diagram of the circuit structure of the multi-channel power supply of another embodiment of the utility model. As shown in the figure, the multi-channel power supply 1 includes a plurality of light source driving circuits 11, a first common end C1, a second common end C2, a main control circuit 12 and a near field communication circuit 13.

[0052] The above components are the same as the foregoing embodiment, so they will not be described here. Unlike the foregoing embodiment, in the present embodiment, the multi-channel power supply 1 also includes an auxiliary power supply 14, which is connected with the main control circuit 12. In the present embodiment, the auxiliary power supply 14 can be a battery, such as a rechargeable battery (lithium battery, nickel-cadmium battery, nickel-hydrogen battery, etc.). In another embodiment, the auxiliary power supply 14 can also be a disposable battery or other similar components.

[0053] The auxiliary power supply 14 can provide low-voltage, stable and reliable voltage to drive the main control circuit 12, so that the main control circuit 12 can operate stably. The user can regularly charge the auxiliary power supply 14 to ensure that the main control circuit 12 can operate normally. In another embodiment, the auxiliary power supply 14 can also be detachable, so the user can directly replace the auxiliary power supply 14.

[0054] In the same way, in the embodiment, the circuit structure of the multi-channel power supply 1 has a plurality of light source driving circuits 11 for driving a plurality of loads LD respectively, and the plurality of light source driving circuits 11 do not affect each other. Therefore, when any light source driving circuit 11 fails, the other light source driving circuits 11 can still operate normally. Therefore, the multi-channel power supply 1 is very suitable for street lamps and other similar applications, so as to meet the requirements of practical applications.

[0055] Of course, the embodiment is only used for illustration and does not limit the scope of the utility model, and equivalent modifications or changes made according to the multi-channel power supply 1 of the embodiment should still be included in the patent scope of the utility model.

[0056] In summary, according to the embodiment of the utility model, the multi-channel power supply includes a plurality of light source driving circuits, a first common terminal, a second common terminal, a master control circuit and a near field communication circuit. Each light source driving circuit is connected with a load and has a live terminal and a neutral terminal. One end of the first common terminal is connected with the live output terminal of an external power supply, and the other end is connected with the live terminal of each light source driving circuit. One end of the second common terminal is connected with the neutral output terminal of the external power supply, and the other end is connected with the neutral terminal of each light source driving circuit. The master control circuit is connected with the plurality of light source driving circuits. The near field communication circuit is connected with the master control circuit. As known from the above, the circuit structure of the multi-channel power supply has a plurality of light source driving circuits for driving a plurality of loads respectively, and the plurality of light source driving circuits do not affect each other. Therefore, when any light source driving circuit fails, the other light source driving circuits can still operate normally. Therefore, the multi-channel power supply is very suitable for street lamps and other similar applications, so as to meet the requirements of practical applications.

[0057] According to the embodiment of the utility model, the multi-channel power supply has a master control circuit and a near field communication circuit. The master control circuit is connected with the near field communication circuit. Therefore, the user can communicate with the near field communication circuit through various electronic devices to set the power and other various parameters for each light source driving circuit, and can read the current power setting and other various parameters of each light source driving circuit. Therefore, the user can more conveniently manage and maintain the multi-channel power supply, and the plurality of light source driving circuits can correspond to different powers.

[0058] In addition, according to the embodiment of the utility model, the multi-channel power supply has a near field communication circuit, so the user can communicate with the near field communication circuit through various electronic devices to perform abnormal detection, dimming or other various control functions. Therefore, the multi-channel power supply is not only more convenient to use, but also can be more widely applied.

[0059] In addition, according to the embodiment of the utility model, the multi-channel power supply has a near field communication circuit, so it does not need to communicate with other devices through an external communication circuit. In this way, the multi-channel power supply can be compatible with a structure with better waterproof effect to achieve a higher waterproof level, so the multi-channel power supply is not only suitable for application in various buildings, but also suitable for application in street lamps and other outdoor facilities. Therefore, the application of the multi-channel power supply can be more extensive, and the use is more flexible.

[0060] In addition, according to the embodiment of the utility model, the multi-channel power supply adopts a direct current isolation power supply mode, so the possibility of electric shock can be greatly reduced. Therefore, the safety of the multi-channel power supply can be effectively improved, and can meet the existing safety standards.

[0061] Furthermore, according to the embodiment of the utility model, the circuit design of the multi-channel power supply is simple, so the desired effect can be achieved without significantly increasing the cost. Therefore, the multi-channel power supply can not only meet the needs of different applications, but also meet the trend of future development.

[0062] It should be noted that although the above embodiments have been described in this paper, the patent protection scope of the utility model is not limited thereby. Therefore, based on the innovative concept of the utility model, the changes and modifications of the embodiments described in this paper, or the equivalent structure or equivalent process transformation made by using the contents of the utility model specification and drawings, directly or indirectly apply the above technical solutions to other related technical fields, are all included in the protection scope of the utility model patent.

Claims

1. A multi-channel power supply, characterized by, Comprising: a plurality of light source driving circuits, each of the light source driving circuits being connected with a load and having a live terminal and a neutral terminal; a first common terminal, one end of which is connected with a live output terminal of an external power supply and the other end of which is connected with the live terminal of each of the light source driving circuits; a second common terminal, one end of which is connected with a neutral output terminal of the external power supply and the other end of which is connected with the neutral terminal of each of the light source driving circuits; a master control circuit connected with the plurality of light source driving circuits; and a near field communication circuit connected with the master control circuit. Further comprising an auxiliary power supply connected with the master control circuit.

2. The multi-channel power supply of claim 1, wherein, The auxiliary power supply is a battery.

3. The multi-channel power supply of claim 2, wherein, The other end of the first common terminal is connected with the live terminal of each of the light source driving circuits through a fuse.

4. The multi-channel power supply of claim 1, wherein, Each of the light source driving circuits further has a rectifier filter circuit, a boost driving circuit and an isolated constant current driving circuit, the rectifier filter circuit being connected with the live terminal and the neutral terminal of the light source driving circuit, the boost driving circuit being connected with the rectifier filter circuit, and the isolated constant current driving circuit being connected with the boost driving circuit and the load.

5. The multi-channel power supply of claim 1, wherein, The master control circuit is connected with the isolated constant current driving circuit of each of the light source driving circuits.

6. The multi-channel power supply of claim 5, wherein, The master control circuit is further connected with the boost driving circuit of each of the light source driving circuits.

7. The multi-channel power supply of claim 5, wherein, The load is a light source board, which comprises a plurality of light emitting components and a circuit board, the plurality of light emitting components being arranged on the circuit board.

8. The multi-channel power supply of claim 1, wherein, The plurality of light emitting components are light emitting diodes.

9. The multi-channel power supply of claim 8, wherein, The master control circuit is a microcontroller, a central processing unit, a special application integrated circuit chip or a field programmable logic gate array.

10. The multi-channel power supply of claim 1, wherein, ​

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