CN213960368U - Control circuit and lighting apparatus - Google Patents
Control circuit and lighting apparatus Download PDFInfo
- Publication number
- CN213960368U CN213960368U CN202023121847.5U CN202023121847U CN213960368U CN 213960368 U CN213960368 U CN 213960368U CN 202023121847 U CN202023121847 U CN 202023121847U CN 213960368 U CN213960368 U CN 213960368U
- Authority
- CN
- China
- Prior art keywords
- direct current
- resistor
- voltage
- control circuit
- reset
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002955 isolation Methods 0.000 claims abstract description 58
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000004044 response Effects 0.000 abstract description 6
- 230000001960 triggered effect Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 description 11
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The application relates to a control circuit and lighting apparatus, control circuit includes direct current output device, direct current step-down device, controlling means, the voltage division subassembly, first isolation device and second isolation device, the positive pole of second isolation device is connected to direct current output device's power output end, the power incoming end of direct current step-down device is connected to the negative pole of second isolation device, the voltage division subassembly is connected direct current output device's power output end and the negative pole of first isolation device, the positive pole of first isolation device connects controlling means's the end that resets. When the direct current output device does not output direct current, the second isolating device is turned off, the voltage dividing assembly is pulled down to transmit the level to the first isolating device, the first isolating device is conducted to pull down the level of the reset end of the control device, and the control device is triggered to reset. By monitoring that the direct current output device stops outputting direct current, the control device is triggered to reset, the response speed is high, the cost is low, and the reliability of reset operation is improved.
Description
Technical Field
The application relates to the technical field of intelligent electrical appliance control, in particular to a control circuit and lighting equipment.
Background
With the development of science and technology and the continuous progress of society, the types of intelligent lighting equipment are more and more, and great convenience is brought to the daily work and life of people. The control circuit in the intelligent lighting device switches and adjusts the brightness of the lighting lamp according to the received command, and in order to ensure the stability of the circuit, the control circuit performs reset processing when needed.
The traditional control circuit adopts multiple power-off to reset the control chip, has long time interval and has the risk of abnormal reset function. Therefore, the conventional control circuit has a disadvantage of low reliability of the reset operation.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a control circuit and a lighting apparatus that can improve the reliability of the reset operation in view of the above-described problems.
A control circuit comprises a direct current output device, a direct current voltage reduction device, a control device, a voltage division component, a first isolation device and a second isolation device, wherein a power output end of the direct current output device is connected with an anode of the second isolation device, a cathode of the second isolation device is connected with a power access end of the direct current voltage reduction device, the voltage division component is connected with a power output end of the direct current output device and a cathode of the first isolation device, and an anode of the first isolation device is connected with a reset end of the control device.
In one embodiment, the first isolation device and the second isolation device are both diodes.
In one embodiment, the voltage dividing assembly includes a resistor R1, a resistor R2, and an electrical group R3, the resistor R2 and the electrical group R3 are connected in series, and a common terminal of the resistor R2 is connected to a negative electrode of the first isolation device, another terminal of the resistor R2 is connected to a power output terminal of the dc output device through the resistor R1, and another terminal of the resistor R3 is connected to a ground terminal of the dc output device.
In one embodiment, the control circuit further comprises a capacitor C1 and a capacitor C2, and the capacitor C1 and the capacitor C2 are both connected in parallel with the resistor R3.
In one embodiment, a ground terminal of the dc output device is connected to a ground terminal of the dc voltage dropping device and a ground terminal of the control device.
In one embodiment, a power output terminal of the dc voltage dropping device is connected to a power terminal of the control device, and a ground terminal of the dc voltage dropping device is connected to a ground terminal of the control device.
In one embodiment, the Control device is an MCU (Micro Control Unit).
A lighting device comprises a lighting assembly and the control circuit.
In one embodiment, the lighting apparatus further comprises a lighting driving circuit, and the lighting driving circuit is connected with the direct current voltage reduction device, the control device and the lighting assembly.
In one embodiment, the lighting assembly is an LED (Light Emitting Diode) lamp.
According to the control circuit and the lighting equipment, after the direct current output device does not output direct current, the second isolation device is turned off, so that the level of the voltage division component transmitted to the first isolation device is reduced, the first isolation device is turned on to reduce the level of the reset end of the control device, and the control device is triggered to reset. By monitoring that the direct current output device stops outputting direct current and triggering the reset of the control device, the response speed is high, the cost is low, the risk of abnormal reset function is reduced, and the reliability of reset operation is improved.
Drawings
FIG. 1 is a schematic diagram of a control circuit in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
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 application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. The "connection" in the following embodiments is understood as "electrical connection", "communication connection", or the like if the connected circuits, modules, units, or the like have electrical signals or data transmission therebetween.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, the terminology used in this specification includes any and all combinations of the associated listed items.
In one embodiment, a control circuit is provided that is adapted for lighting power control of a lighting device. As shown in fig. 1, the control circuit includes a dc output device 110, a dc voltage dropping device 120, a control device 130, a voltage dividing component 140, a first isolation device D1 and a second isolation device D2, a power output terminal VDC + of the dc output device 110 is connected to an anode of the second isolation device D2, a cathode of the second isolation device D2 is connected to a power input terminal VDC1 of the dc voltage dropping device 120, the voltage dividing component 140 is connected to the power output terminal VDC + of the dc output device 110 and a cathode of the first isolation device D1, and an anode of the first isolation device D1 is connected to a RESET terminal RESET of the control device 130.
The dc output device 110 inputs ac or dc and rectifies the input dc to dc, and the dc voltage-reducing device 120 reduces the dc voltage of the dc output device 110 and outputs the dc voltage to the control device 130 for power supply, and also supplies power to a back-end load. The control device 130 operates after power is supplied, and controls the start, stop, and the like of the load according to the received instruction. Specifically, the load may be an illumination lamp, a motor, and the like, and the control device 130 may perform on/off control, brightness control, and the like of the illumination lamp according to the received instruction, taking the illumination lamp as an example. The RESET terminal RESET of the control means 130 is a port that is RESET or active below a certain low voltage or signal. The first and second isolation devices D1 and D2 function as isolation devices, diode-like switching functions, defining positive and negative directions in the direction of the arrows, with the voltage or signal being turned on in the forward direction and off in the reverse direction. It is understood that the specific types of the first isolation device D1 and the second isolation device D2 are not exclusive, and any device or apparatus may be used as long as the device or apparatus is turned on and turned off in the reverse direction when a signal in the forward direction is applied. In this embodiment, the first isolation device D1 and the second isolation device D2 are both diodes. The type of the control device 130 is not limited, and may be any device that operates with a low voltage signal, and in the present embodiment, the control device 130 is an MCU.
Taking the example that the dc output device 110 is connected to an external ac power for rectification, as shown in fig. 1, the dc output device 110 is connected to a live line L and a neutral line N, and connected to an external commercial power for rectification to obtain a dc power output. When voltage or signals are input into the live wire L and the zero wire N, the control circuit works normally, the voltage obtained by voltage division through the voltage division component 140 is higher than the voltage of the RESET end RESET of the control device 130, the first isolation device D1 is turned off, and the control device 130 is not RESET; when no voltage or signal is input in the live wire L and the zero wire N, no voltage or signal is output from the dc output device 110, the second isolating device D2 is turned off, the signal detected by the voltage dividing component 140 is equal to GND, the first isolating device D1 is turned on, the voltage of the RESET terminal RESET of the control device 130 is pulled low, so that the control device 130 is RESET, and the function of immediately resetting the control device 130 after no signal is input in the live wire L and the zero wire N is realized, so that the response speed is high.
In the control circuit, when the dc output device 110 does not output dc power, the second isolation device D2 is turned off, so as to pull down the level transmitted to the first isolation device D1 by the voltage dividing assembly 140, and the first isolation device D1 turns on the level of the reset terminal of the pull-down control device 130, thereby triggering the control device 130 to perform a reset operation. By monitoring that the direct current output device 110 stops outputting the direct current, the control device 130 is triggered to reset, so that the response speed is high, the cost is low, the risk of abnormal reset function is reduced, and the reliability of reset operation is improved.
The specific structure of the voltage dividing assembly 140 is not exclusive, and in one embodiment, the voltage dividing assembly 140 includes a resistor R1, a resistor R2, and an electrical group R3, the resistor R2 and the electrical group R3 are connected in series, and a common terminal is connected to the negative terminal of the first isolation device D1, the other terminal of the resistor R2 is connected to the power output terminal VDC + of the dc output device 110 through the resistor R1, and the other terminal of the resistor R3 is connected to the ground terminal GND of the dc output device 110. The resistor R1, the resistor R2 and the resistor R3 are connected between the dc output device 110 and the second isolation device D2, and detect signals therein, and the anode of the first isolation device D1 is connected to the RESET pin RESET of the control device 130. The resistor R1, the resistor R2 and the resistor R3 are used for detecting and dividing a high-voltage signal output by a power output end VDC + of the direct current output device 110.
In one embodiment, with continued reference to fig. 1, the control circuit further includes a capacitor C1 and a capacitor C2, both capacitor C1 and capacitor C2 being connected in parallel with resistor R3. The capacitor C1 and the capacitor C2 are used for smoothing and filtering the signal after voltage division by the voltage division component 140.
Further, the ground GND of the dc output device 110 is connected to the ground GND of the dc voltage step-down device 120 and the ground GND of the control device 130. In addition, the power output terminal VCC of the dc voltage reduction device 120 is connected to the power terminal VCC of the control device 130, and the ground terminal GND of the dc voltage reduction device 120 is connected to the ground terminal GND of the control device 130.
Specifically, when voltages or signals capable of working are input into the live wire L and the zero wire N, the whole control circuit works normally, through voltage division, the voltage at two ends of the resistor R3 is higher than the RESET voltage of the RESET end RESET of the MCU, the first isolation device D1 is turned off, and the MCU is not RESET; when no working voltage or signal is input into the live wire L and the zero wire N, no voltage or signal is input between the power output end VDC + of the dc output device 110 and the ground end GND due to the fact that the second isolation device D2 is turned off, so that the signal on the resistor R3 for voltage division detection of the resistor R1, the resistor R2 and the resistor R3 is equal to the ground end GND, the first isolation device D1 is turned on, the RESET voltage of the RESET end of the MCU is reduced to be lower than the RESET signal, the MCU is RESET, and the function of resetting the MCU immediately is realized after no signal exists in the live wire L and the zero wire N.
In one embodiment, there is also provided a lighting device comprising a lighting assembly and the control circuit described above. The control device of the control circuit can be directly connected with the lighting assembly to control the lighting assembly to work. Further, the lighting device can further comprise a lighting driving circuit, and the lighting driving circuit is connected with the direct current voltage reduction device, the control device and the lighting assembly. The control device controls the lighting driving circuit to be connected to the output direct current of the direct current voltage reduction device according to the received instruction to supply power to the lighting assembly, and the lighting assembly is switched on and off and brightness controlled. The type of lighting assembly is not exclusive and in this embodiment the lighting assembly is an LED lamp.
According to the lighting equipment, after the direct current output device does not output direct current, the second isolation device is turned off, so that the level of the voltage division component transmitted to the first isolation device is reduced, the level of the reset end of the pull-down control device is conducted by the first isolation device, and the control device is triggered to reset. By monitoring that the direct current output device stops outputting direct current and triggering the reset of the control device, the response speed is high, the cost is low, the risk of abnormal reset function is reduced, and the reliability of reset operation is improved.
In order to facilitate a better understanding of the above-described control circuit and lighting device, a detailed explanation is given below in connection with specific embodiments.
The present application provides a control circuit for resetting a low-cost high-reliability fast detection signal, which has a structure as shown in fig. 1, a dc output device 110 is a device for inputting ac or dc and rectifying the input ac or dc into dc, and a dc voltage reduction device 120 performs dc voltage reduction on the dc output from the dc output device 110 and outputs the dc reduced voltage to a control device 130 for power supply. The RESET terminal RESET of the control means 130 is a port that is RESET or active below a certain low voltage or signal. The voltage divider 140 is a signal (voltage) detection device for L and N. The first and second isolation devices D1 and D2 function as isolation devices, diode-like switching functions, defining positive and negative directions in the direction of the arrows, with the voltage or signal being turned on in the forward direction and off in the reverse direction. The first and second isolating devices D1 and D2 are not limited to diodes, and may be any device or means that turns on and off in the reverse direction when a signal is applied in the forward direction. The type of the control device 130 is not limited to the MCU, and may be any device that operates with a low voltage signal.
The resistor R1, the resistor R2 and the resistor R3 are connected between the dc output device 110 and the second isolation device D2 (or connected to L or N in front of the dc output device 110) and detect signals therein, and the anode of the first isolation device D1 is connected to the RESET pin RESET of the control device 130. The resistor R1, the resistor R2 and the resistor R3 are used for detecting and dividing a high-voltage signal output by a power output end VDC + of the direct current output device 110. The capacitor C1 and the capacitor C2 are used for smoothing and filtering the signal after voltage division by the voltage division component 140. In other embodiments, the resistor R1, the resistor R2, and the electric group R3 may be replaced with devices capable of quickly acquiring signals of the live line L and the neutral line N, and the capacitor C1 and the capacitor C2 may be replaced with other devices capable of ensuring smooth signals at two ends of the resistor R3.
When the voltage or signal which can work is input into the live wire L and the zero wire N, the whole control circuit works normally, the voltage at the two ends of the resistor R3 is higher than the RESET voltage of the RESET end RESET of the MCU through voltage division, the first isolating device D1 is turned off, and the MCU is not RESET; when no working voltage or signal is input into the live wire L and the zero wire N, no voltage or signal is input between the power output end VDC + of the dc output device 110 and the ground end GND due to the fact that the second isolation device D2 is turned off, so that the signal on the resistor R3 for voltage division detection of the resistor R1, the resistor R2 and the resistor R3 is equal to the ground end GND, the first isolation device D1 is turned on, the RESET voltage of the RESET end of the MCU is reduced to be lower than the RESET signal, the MCU is RESET, and the function of resetting the MCU immediately is realized after no signal exists in the live wire L and the zero wire N.
The control circuit has low cost and few devices, the output does not influence the normal work of the direct current output device 110, the direct current voltage reduction device 120 and the control device 130 when signals are input, and when no signal exists, the output signal is generated immediately to control the reset or low-voltage effective device. The control circuit realizes the function that the MCU is reset immediately after the live wire L and the zero wire N have no signals, otherwise, the normal work of the direct current voltage reduction device 120 and the control device 130 behind the MCU is not influenced; low cost, small volume, fast response speed and flexible application are also realized.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a control circuit, its characterized in that, includes direct current output device, direct current step-down device, controlling means, voltage division subassembly, first isolation device and second isolation device, direct current output device's power output end connects the positive pole of second isolation device, the negative pole of second isolation device is connected direct current step-down device's power incoming end, the voltage division subassembly is connected direct current output device's power output end with the negative pole of first isolation device, the positive pole of first isolation device is connected controlling means's the end that resets.
2. The control circuit of claim 1, wherein the first isolation device and the second isolation device are both diodes.
3. The control circuit of claim 1, wherein the voltage dividing component comprises a resistor R1, a resistor R2, and an electrical group R3, the resistor R2 and the electrical group R3 are connected in series, and a common terminal of the resistor R2 is connected to a negative terminal of the first isolation device, the other terminal of the resistor R2 is connected to the power output terminal of the dc output device through the resistor R1, and the other terminal of the resistor R3 is connected to the ground terminal of the dc output device.
4. The control circuit of claim 3, further comprising a capacitor C1 and a capacitor C2, wherein the capacitor C1 and the capacitor C2 are both connected in parallel with the resistor R3.
5. The control circuit according to claim 1, wherein a ground terminal of the dc output means is connected to a ground terminal of the dc voltage step-down means and a ground terminal of the control means.
6. The control circuit according to claim 5, wherein the power output terminal of the DC voltage dropping device is connected to the power terminal of the control device, and the ground terminal of the DC voltage dropping device is connected to the ground terminal of the control device.
7. The control circuit according to any of claims 1-6, wherein the control means is an MCU.
8. A lighting device comprising a lighting assembly and the control circuit of any one of claims 1-7.
9. The lighting apparatus according to claim 8, further comprising a lighting driving circuit, the lighting driving circuit connecting the dc voltage dropping device, the control device and the lighting assembly.
10. A lighting device as recited in claim 8 or claim 9, wherein the lighting assembly is an LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023121847.5U CN213960368U (en) | 2020-12-22 | 2020-12-22 | Control circuit and lighting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023121847.5U CN213960368U (en) | 2020-12-22 | 2020-12-22 | Control circuit and lighting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213960368U true CN213960368U (en) | 2021-08-13 |
Family
ID=77193888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023121847.5U Active CN213960368U (en) | 2020-12-22 | 2020-12-22 | Control circuit and lighting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213960368U (en) |
-
2020
- 2020-12-22 CN CN202023121847.5U patent/CN213960368U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102761248B (en) | Power conversion circuit and conversion controller | |
| CN204482072U (en) | A kind of single live wire switching circuit | |
| US9577632B2 (en) | Wireless switching circuit | |
| CN109445336B (en) | Switch control circuit and switch control system | |
| CN209373052U (en) | Relay adhesion detection device, battery management system and electric car | |
| CN210405079U (en) | Protection circuit and power input module | |
| CN109152184A (en) | lamp control device and lighting system | |
| CN212519502U (en) | Remote controller control circuit, circuit board and remote controller | |
| CN105071469A (en) | Solar charging circuit | |
| US8093750B2 (en) | Power strip system | |
| CN215181531U (en) | Intelligent switch and intelligent switch circuit | |
| CN213960368U (en) | Control circuit and lighting apparatus | |
| CN111665764A (en) | Switch circuit, control method thereof, intelligent switch and control system | |
| CN217037504U (en) | LED dimming circuit and dimming LED lamp | |
| CN114466481B (en) | Circuit and method for detecting no-load of LED constant-voltage driving power supply and LED driver | |
| CN111405717A (en) | L ED lamp circuit with human body induction function | |
| CN106992501B (en) | Direct-current power supply capable of preventing power supply from being connected by mistake in output and LED lamp and control system thereof | |
| CN213028651U (en) | Ripple voltage detection circuit, power control circuit and display device | |
| CN204733422U (en) | A kind of Solar lamp system | |
| CN212255592U (en) | Switching-on and switching-off detection circuit of circuit breaker, equipment and Internet of things system | |
| CN211405864U (en) | Multichannel high withstand voltage MCU power supply reset circuit | |
| CN210518944U (en) | BUCK topology circuit for power supply | |
| CN218633689U (en) | Zigbee driving discharge circuit, power supply and lamp | |
| CN213122636U (en) | Open-type intelligence switch | |
| CN207835853U (en) | A kind of flash lamp module and terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building A, B, C, and D, Industrial Park, No. 10 Huanping Road, Gaoqiao Community, Pingdi Street, Longgang District, Shenzhen City, Guangdong Province, 518000 Patentee after: Shenzhen Yufu Lighting Co.,Ltd. Country or region after: China Address before: Buildings a, B, C and D, No. 10, huanping Road, Gaoqiao community, Pingdi street, Longgang District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Eastfield Lighting Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |