CN220823327U - Power line carrier constant current control circuit and LED lighting equipment - Google Patents
Power line carrier constant current control circuit and LED lighting equipment Download PDFInfo
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- CN220823327U CN220823327U CN202322267736.2U CN202322267736U CN220823327U CN 220823327 U CN220823327 U CN 220823327U CN 202322267736 U CN202322267736 U CN 202322267736U CN 220823327 U CN220823327 U CN 220823327U
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Abstract
The application provides a power line carrier constant current control circuit and LED lighting equipment. The power line carrier constant current control circuit comprises a coupling transformer and a constant current dimming control circuit; the constant current dimming control circuit comprises a dimming modulation microprocessor, a first resistor and a sensing control switch, wherein the second end of the first resistor is connected with the first end of the sensing control switch, and the first end of the sensing control switch is also connected with the reset detection end of the dimming modulation microprocessor; the input end of the dimming modulation microprocessor is connected with the output end of the coupling transformer, and the output end of the dimming modulation microprocessor is used for outputting a dimming modulation signal to the constant current power supply. When a reset signal is generated, the sensing control switch is turned on, so that the first end of the sensing control switch is pulled down from a high level to a low level, the recovery of factory setting of the constant-current power supply is conveniently realized, the recovery of factory setting is realized without adopting a power-off mode, and the use efficiency is effectively improved.
Description
Technical Field
The utility model relates to the technical field of power line carriers, in particular to a power line carrier constant current control circuit and LED lighting equipment.
Background
Currently, communication technologies that have been used in low voltage distribution networks include fiber optic communication, power line carrier communication (broadband and narrowband), RS485/232, and micropower wireless communication, among others. Because the power line omits a communication professional cable, the existing power distribution network is directly utilized as an energy, information and control integrated network platform, and the same network transmission of power and information is truly realized. There are many advantages to other communication technologies, but communication reliability is the most significant cause of limited and questioned current applications. The complexity of the power line communication channel environment and the sharing, openness and diversity of the communication medium environment are essential causes of poor reliability of the power line communication system. For power line communication, only improving the communication high reliability of point-to-point between nodes does not mean that the communication high reliability of the whole network can be improved, which is merely the basis and premise of the network reliability.
However, the power carrier intelligent constant current power supply in the market at present usually adopts a method of switching off the alternating current to restore the power supply to the factory setting, and the method has the defect that the factory setting function can be triggered only when the time of starting and shutting down is kept consistent each time, so that the use efficiency is low.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art and provides a power line carrier constant current control circuit and LED lighting equipment capable of effectively improving the use efficiency.
The aim of the utility model is realized by the following technical scheme:
A power line carrier constant current control circuit, comprising: a coupling transformer and a constant current dimming control circuit; the input end of the coupling transformer is used for being connected with the mains supply; the constant current dimming control circuit comprises a dimming modulation microprocessor, a first resistor and a sensing control switch, wherein the first end of the first resistor is used for being connected with a reference power supply, the second end of the first resistor is connected with the first end of the sensing control switch, the second end of the sensing control switch is grounded, the control end of the sensing control switch is connected with the reference power supply, and the first end of the sensing control switch is also connected with a reset detection end of the dimming modulation microprocessor so as to conduct the sensing control switch when a reset signal is sensed and trigger the reset function of the dimming modulation microprocessor; the input end of the dimming modulation microprocessor is connected with the output end of the coupling transformer, and the output end of the dimming modulation microprocessor is used for outputting a dimming modulation signal to the constant current power supply.
In one embodiment, the constant current dimming control circuit further comprises a second resistor, a first end of the sensing control switch is connected with a first end of the second resistor, and a second end of the second resistor is connected with the reference power supply.
In one embodiment, the second resistor is a variable resistor.
In one embodiment, the first resistor is a variable resistor.
In one embodiment, the constant current dimming control circuit further comprises a reset diode, wherein a first end of the first resistor is connected with an anode of the reset diode, and a cathode of the reset diode is connected with a first end of the sensing control switch.
In one embodiment, the reset diode is a light emitting diode.
In one embodiment, the sensor control switch is a hall sensor switch.
In one embodiment, the constant current dimming control circuit further comprises a first capacitor, a first end of the first capacitor is connected with a reference power supply, and a second end of the first capacitor is grounded.
In one embodiment, the constant current dimming control circuit further includes a second capacitor, a first end of the second capacitor is connected to the first end of the first capacitor, a second end of the second capacitor is grounded, and a capacitance value of the second capacitor is greater than a capacitance value of the first capacitor.
An LED lighting device comprising the power line carrier constant current control circuit of any one of the embodiments described above.
Compared with the prior art, the utility model has at least the following advantages:
When a reset signal is generated, the sensing control switch is turned on, so that the first end of the sensing control switch is pulled down from a high level to a low level, the reset triggering condition is collected by the reset detection end of the dimming modulation microprocessor, the resetting operation of the dimming modulation microprocessor is facilitated, the recovery of factory setting of the constant-current power supply is facilitated, the factory setting is recovered without adopting a power-off mode, and the use efficiency is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a circuit diagram of a power line carrier constant current control circuit in an embodiment;
Fig. 2 is a circuit diagram of a dimming modulation microprocessor in the power line carrier constant current control circuit shown in fig. 1;
Fig. 3 is a partial circuit diagram of a constant current dimming control circuit in the power line carrier constant current control circuit shown in fig. 1;
Fig. 4 is a circuit diagram of a power line carrier constant current control circuit in another embodiment.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model relates to a power line carrier constant current control circuit. In one embodiment, the power line carrier constant current control circuit comprises a coupling transformer and a constant current dimming control circuit; the input end of the coupling transformer is used for being connected with the mains supply; the constant current dimming control circuit comprises a dimming modulation microprocessor, a first resistor and a sensing control switch, wherein the first end of the first resistor is used for being connected with a reference power supply, the second end of the first resistor is connected with the first end of the sensing control switch, the second end of the sensing control switch is grounded, the control end of the sensing control switch is connected with the reference power supply, and the first end of the sensing control switch is also connected with a reset detection end of the dimming modulation microprocessor so as to conduct the sensing control switch when a reset signal is sensed and trigger the reset function of the dimming modulation microprocessor; the input end of the dimming modulation microprocessor is connected with the output end of the coupling transformer, and the output end of the dimming modulation microprocessor is used for outputting a dimming modulation signal to the constant current power supply. When a reset signal is generated, the sensing control switch is turned on, so that the first end of the sensing control switch is pulled down from a high level to a low level, the reset triggering condition is collected by the reset detection end of the dimming modulation microprocessor, the resetting operation of the dimming modulation microprocessor is facilitated, the recovery of factory setting of the constant-current power supply is facilitated, the factory setting is recovered without adopting a power-off mode, and the use efficiency is effectively improved.
Fig. 1 is a circuit diagram of a power line carrier constant current control circuit according to an embodiment of the utility model.
The power line carrier constant current control circuit 10 of an embodiment includes a coupling transformer T2 and a constant current dimming control circuit 100. The input end of the coupling transformer T2 is used for being connected with the mains supply. Referring to fig. 2 and 3, the constant current dimming control circuit 100 includes a dimming modulation microprocessor U3, a first resistor R7, and a sensing control switch K1. The first end of the first resistor R7 is used for being connected with a reference power supply, the second end of the first resistor R7 is connected with the first end of the sensing control switch K1, the second end of the sensing control switch K1 is grounded, and the control end of the sensing control switch K1 is connected with the reference power supply. The first end of the sensing control switch K1 is also connected with a reset detection end of the dimming modulation microprocessor U3, so that the sensing control switch K1 is conducted when a reset signal is sensed, and the reset function of the dimming modulation microprocessor U3 is triggered. The input end of the dimming modulation microprocessor U3 is connected with the output end of the coupling transformer T2, and the output end of the dimming modulation microprocessor U3 is used for outputting a dimming modulation signal to the constant current power supply.
In this embodiment, when a reset signal is generated, the sensing control switch K1 is turned on, so that the first end of the sensing control switch K1 is pulled down from a high level to a low level, thereby the reset detection end of the dimming modulation microprocessor U3 collects a reset trigger condition, and the resetting operation of the dimming modulation microprocessor U3 is facilitated, so that the recovery of factory setting of the constant current power supply is facilitated, the recovery of factory setting is not required by adopting a power-off mode, and the use efficiency is effectively improved.
In another embodiment, the sensing control switch K1 is a hall sensing switch, and the on-off of the sensing control switch K1 is realized by a magnetic induction mode.
In one embodiment, referring to fig. 3, the constant current dimming control circuit 100 further includes a second resistor R8, a first end of the sensing control switch K1 is connected to a first end of the second resistor R8, and a second end of the second resistor R8 is connected to the reference power supply. In this embodiment, the second resistor R8 is connected to the sensing control switch K1, specifically, the second resistor R8 is connected in parallel with the first resistor R7, so that the input resistance of the sensing control switch K1 is reduced, and thus the voltage at the first end of the sensing control switch K1 is increased, which is convenient for providing a larger detection voltage for the reset detection end of the dimming modulation microprocessor U3 when the sensing control switch K1 is turned on, thereby improving the detection accuracy of the dimming modulation microprocessor U3 on the reset signal. In another embodiment, at least one of the first resistor R7 and the second resistor R8 is a variable resistor, and specifically, the first resistor R7 and the second resistor R8 are both variable resistors, and by adjusting the resistance values of the first resistor R7 and the second resistor R8, the voltage collected by the reset detection end of the dimming modulation microprocessor U3 is conveniently adjusted, so as to be suitable for different dimming modulation microprocessors U3.
In one embodiment, referring to fig. 3, the constant current dimming control circuit 100 further includes a reset diode LED1, a first end of the first resistor R7 is connected to an anode of the reset diode LED1, and a cathode of the reset diode LED1 is connected to a first end of the sensing control switch K1. In this embodiment, the reset diode LED1 is connected to the first resistor R7, specifically, the reset diode LED1 is connected in series to the first resistor R7 and the sensing control switch K1, and the reset diode LED1 conducts the current output by the reference power supply in a unidirectional manner, so that the current is ensured to be directed to the ground when the sensing control switch K1 is conducted, thereby facilitating the provision of a stable conducting current when the sensing control switch K1 is conducted, and avoiding the reverse current from impacting the dimming modulation microprocessor U3. In another embodiment, the reset diode LED1 is a light emitting diode, and the reset is triggered by lighting, for example, the reset detection end of the dimming modulation microprocessor U3 further collects a reset signal through a photosensitive sensor, specifically, the sensing control switch K1 is continuously turned on and off for 5 times, the light emitting diode performs 5 times of lighting, and the light emission of the light emitting diode is used as a light signal to trigger the factory setting restoration of the constant current power supply.
In one embodiment, referring to fig. 3, the constant current dimming control circuit 100 further includes a first capacitor C4, a first end of the first capacitor C4 is connected to the reference power supply, and a second end of the first capacitor C4 is grounded. In this embodiment, the first capacitor C4 is connected to the reference power supply, specifically, the first capacitor C4 is connected in parallel between the control end and the second end of the sensing control switch K1, and the first capacitor C4 filters the voltage on the control end of the sensing control switch K1, so that the control signal on the control end of the sensing control switch K1 is stable, and the sensing control switch K1 is enabled to be turned on or off accurately, so that an accurate reset signal is conveniently provided for the dimming modulation microprocessor U3.
In another embodiment, the constant current dimming control circuit 100 further includes a second capacitor C7, a first end of the second capacitor C7 is connected to the first end of the first capacitor C4, a second end of the second capacitor C7 is grounded, a capacitance value of the second capacitor C7 is greater than a capacitance value of the first capacitor C4, and the second capacitor C7 is connected in parallel with the first capacitor C4, so as to facilitate filtering of interference signals with different frequencies, and further improve accuracy of a reset signal collected by the dimming modulation microprocessor U3.
In another embodiment, the constant-current power supply comprises a constant-voltage circuit and a constant-current circuit so as to conveniently output constant voltage and constant current to the LED lamp, and the reference is made to the figure.
In one embodiment, the application further provides an LED lighting device, which comprises the power line carrier constant current control circuit according to any one of the embodiments. In this embodiment, the power line carrier constant current control circuit includes a coupling transformer and a constant current dimming control circuit; the input end of the coupling transformer is used for being connected with the mains supply; the constant current dimming control circuit comprises a dimming modulation microprocessor, a first resistor and a sensing control switch, wherein the first end of the first resistor is used for being connected with a reference power supply, the second end of the first resistor is connected with the first end of the sensing control switch, the second end of the sensing control switch is grounded, the control end of the sensing control switch is connected with the reference power supply, and the first end of the sensing control switch is also connected with a reset detection end of the dimming modulation microprocessor so as to conduct the sensing control switch when a reset signal is sensed and trigger the reset function of the dimming modulation microprocessor; the input end of the dimming modulation microprocessor is connected with the output end of the coupling transformer, and the output end of the dimming modulation microprocessor is used for outputting a dimming modulation signal to the constant current power supply. When a reset signal is generated, the sensing control switch is turned on, so that the first end of the sensing control switch is pulled down from a high level to a low level, the reset triggering condition is collected by the reset detection end of the dimming modulation microprocessor, the resetting operation of the dimming modulation microprocessor is facilitated, the recovery of factory setting of the constant-current power supply is facilitated, the factory setting is recovered without adopting a power-off mode, and the use efficiency is effectively improved.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. The utility model provides a power line carrier constant current control circuit which characterized in that includes:
The input end of the coupling transformer is used for being connected with the mains supply;
The constant current dimming control circuit comprises a dimming modulation microprocessor, a first resistor and a sensing control switch, wherein the first end of the first resistor is used for being connected with a reference power supply, the second end of the first resistor is connected with the first end of the sensing control switch, the second end of the sensing control switch is grounded, the control end of the sensing control switch is connected with the reference power supply, and the first end of the sensing control switch is also connected with a reset detection end of the dimming modulation microprocessor so as to conduct the sensing control switch when a reset signal is sensed to trigger the reset function of the dimming modulation microprocessor; the input end of the dimming modulation microprocessor is connected with the output end of the coupling transformer, and the output end of the dimming modulation microprocessor is used for outputting a dimming modulation signal to the constant current power supply.
2. The power line carrier constant current control circuit according to claim 1, further comprising a second resistor, wherein a first end of the sensing control switch is connected to a first end of the second resistor, and a second end of the second resistor is connected to the reference power supply.
3. The power line carrier constant current control circuit according to claim 2, wherein the second resistor is a variable resistor.
4. The power line carrier constant current control circuit according to claim 1, wherein the first resistor is a variable resistor.
5. The power line carrier constant current control circuit according to claim 1, further comprising a reset diode, wherein a first end of the first resistor is connected to an anode of the reset diode, and a cathode of the reset diode is connected to a first end of the sensing control switch.
6. The power line carrier constant current control circuit according to claim 5, wherein the reset diode is a light emitting diode.
7. The power line carrier constant current control circuit according to claim 1, wherein the sensing control switch is a hall sensing switch.
8. The power line carrier constant current control circuit according to claim 1, further comprising a first capacitor, a first end of the first capacitor being connected to a reference power supply, a second end of the first capacitor being grounded.
9. The power line carrier constant current control circuit according to claim 8, further comprising a second capacitor, wherein a first end of the second capacitor is connected to the first end of the first capacitor, a second end of the second capacitor is grounded, and a capacitance value of the second capacitor is larger than a capacitance value of the first capacitor.
10. An LED lighting device comprising the power line carrier constant current control circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322267736.2U CN220823327U (en) | 2023-08-22 | 2023-08-22 | Power line carrier constant current control circuit and LED lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322267736.2U CN220823327U (en) | 2023-08-22 | 2023-08-22 | Power line carrier constant current control circuit and LED lighting equipment |
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| Publication Number | Publication Date |
|---|---|
| CN220823327U true CN220823327U (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322267736.2U Active CN220823327U (en) | 2023-08-22 | 2023-08-22 | Power line carrier constant current control circuit and LED lighting equipment |
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| CN (1) | CN220823327U (en) |
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- 2023-08-22 CN CN202322267736.2U patent/CN220823327U/en active Active
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