CN214046089U - Short circuit is prevented to lamp area controller - Google Patents
Short circuit is prevented to lamp area controller Download PDFInfo
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- CN214046089U CN214046089U CN202120082247.8U CN202120082247U CN214046089U CN 214046089 U CN214046089 U CN 214046089U CN 202120082247 U CN202120082247 U CN 202120082247U CN 214046089 U CN214046089 U CN 214046089U
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- 238000001514 detection method Methods 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000012031 short term test Methods 0.000 abstract description 2
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 17
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of circuit protection, in particular to a short-circuit prevention circuit of a lamp belt controller, which comprises a MCU, a partial pressure detection module and a control module, wherein the control module is used for controlling the on-off of a lamp belt; the voltage division detection module is used for detecting the voltage of the lamp strip and feeding the voltage back to the MCU; the MCU is used for controlling the on-off of the control module according to the voltage of the lamp strip. The utility model has simple structure, is connected with the lamp belt by being provided with the partial pressure detection module, thereby supplying power for the lamp belt and monitoring the voltage of the lamp belt; when the lamp area circuit, the voltage that partial pressure detection module detected is different too much with the actual value to in time make the control unit outage and avoid the control unit to be punctured, reached the effect of short-term test lamp area state and protection control module.
Description
Technical Field
The utility model belongs to the technical field of the circuit protection technique and specifically relates to indicate a short circuit is prevented to lamp area controller.
Background
At present, when a multicolor lamp strip controller is used for welding RGBCW lamp color control data wires, a power supply and the lamp color control data wires are easily in short circuit in a welding mode, or the wires are supplied with materials and are in short circuit, so that a control module is broken down due to overlarge passing current after the power is connected, and permanent damage is caused.
Disclosure of Invention
The utility model discloses problem to prior art provides a short circuit is prevented to lamp area controller, can whether short circuit in real-time supervision lamp area to can in time make the control module disconnection and protect control module.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a short-circuit prevention circuit of a lamp belt controller, which comprises an MCU, a partial pressure detection module and a control module,
the control module is used for controlling the power on and off of the lamp strip;
the voltage division detection module is used for detecting the voltage of the lamp strip and feeding the voltage back to the MCU;
the MCU is used for controlling the on-off of the control module according to the voltage of the lamp strip.
Furthermore, the voltage division detection module comprises a first voltage division resistor and a second voltage division resistor, a detection end of the MCU is used for being externally connected with the lamp strip after passing through the first voltage division resistor, and the detection end of the MCU is grounded after passing through the second voltage division resistor.
Furthermore, the control module comprises a plurality of control units, each control unit comprises a switch tube, a signal end of each switch tube is connected with the MCU, and two control ends of each switch tube are respectively grounded and externally connected with a lamp strip.
Furthermore, the switch tube is an MOS tube.
Furthermore, the control unit further comprises a first resistor and a second resistor, two ends of the first resistor are respectively connected with the signal end of the switch tube and the MCU, one end of the second resistor is connected between the signal end of the switch tube and the first resistor, and the other end of the second resistor is grounded.
Further, still including the interface that is used for external lamp area, MCU warp partial pressure detection module connect in the connection end of interface, MCU warp control module connect in the control end of interface.
The utility model has the advantages that: the utility model has simple structure, is connected with the lamp belt by being provided with the partial pressure detection module, thereby supplying power for the lamp belt and monitoring the voltage of the lamp belt; when the lamp area circuit, the voltage that partial pressure detection module detected is different too much with the actual value to in time make the control unit outage and avoid the control unit to be punctured, reached the effect of short-term test lamp area state and protection control module.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a circuit diagram of the present invention.
Reference numerals: the circuit comprises a 1-MCU, a 2-voltage division detection module, a 3-control module, a 4-interface, a 21-first voltage division resistor, a 22-second voltage division resistor, a 31-control unit, a 32-switching tube, a 33-first resistor and a 34-second resistor.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the utility model provides a short-circuit prevention circuit for a lamp strip controller, which comprises an MCU1, a voltage division detection module 2 and a control module 3,
the control module 3 is used for controlling the on-off of the lamp strip;
the voltage division detection module 2 is used for detecting the voltage of the lamp strip and feeding the voltage back to the MCU 1;
the MCU1 is used for controlling the on-off of the control module 3 according to the voltage of the lamp strip.
In practical use, the MCU1 capable of realizing the effects of the present invention is a conventional chip, which is not illustrated herein; furthermore, the utility model discloses still including interface 4 that is used for external lamp area, MCU1 warp partial pressure detection module 2 connect in interface 4's the end of connecting electricity, MCU1 warp control module 3 connect in interface 4's control end. The MCU1 controls the power on/off of the lamp strip through the control module 3, and the MCU1 is externally connected with a power supply and supplies power to the lamp strip through the voltage division detection module 2; if the lamp strip is short-circuited, the voltage distribution of the voltage division detection module 2 changes, the signal is fed back to the MCU1, and the MCU1 timely turns the control module 3 into a disconnected state, so that the lamp strip is powered off to prevent the control module 3 from being broken down by short-circuit current, and the effect of protecting the control module 3 is achieved.
The utility model discloses simple structure can enough directly be used for the lamp in-band to protect the lamp area, also can be used to detect the lamp area, whether need detect before the lamp area dispatches from the factory promptly when leading to the short circuit because of reasons such as welding, through inserting the lamp area the utility model discloses detect to guarantee in time to discover unqualified lamp area, promoted the quality of the product that dispatches from the factory.
In this embodiment, the voltage division detection module 2 includes a first voltage division resistor 21 and a second voltage division resistor 22, a detection end of the MCU1 is used for connecting an external light strip after passing through the first voltage division resistor 21, and a detection end of the MCU1 is grounded after passing through the second voltage division resistor 22. Namely, the detection end of the MCU1 is connected to the first voltage dividing resistor 21 and the second voltage dividing resistor 22 which are connected in parallel, after the two voltage dividing resistors are connected in parallel, the first voltage dividing resistor 21 is connected in series with the lamp strip, and the 12V voltage output by the MCU1 is 5V when reaching the lamp strip in a series voltage dividing manner, so that the lamp strip can work normally; when the lamp area circuit, its both sides voltage can change for the voltage of first divider resistor 21 rises, and after MCU1 found this voltage change signal, can make control module 3 disconnection, thereby realized letting the effect that the lamp area was opened a way, avoided the lamp area to lead to control module 3 to be punctured through the electric current is too big.
In this embodiment, the control module 3 includes a plurality of control units 31, each control unit 31 includes a switch tube 32, a signal end of the switch tube 32 is connected to the MCU1, and two control ends of the switch tube 32 are respectively grounded and externally connected to a light strip. The structures of the plurality of control units 31 are substantially equal, and the functions may be the same or different, that is, each control unit 31 is used to control RGBCW dimming of the light strip in cooperation with each other, specifically, control is realized by on-off of each switching tube 32.
Specifically, the switch 32 is a MOS transistor, that is, the signal terminal of the switch 32 is a gate, and the two control terminals are a source and a drain, respectively.
Specifically, the control unit 31 further includes a first resistor 33 and a second resistor 34, two ends of the first resistor 33 are respectively connected to the signal end of the switching tube 32 and the MCU1, one end of the second resistor 34 is connected between the signal end of the switching tube 32 and the first resistor 33, and the other end of the second resistor 34 is grounded. The first resistor 33 and the second resistor 34 cooperate to perform voltage division and protection functions, so as to prevent the signal terminal of the switching tube 32 from being damaged due to excessive current.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.
Claims (6)
1. The utility model provides a lamp area controller prevents short circuit which characterized in that: comprises an MCU, a partial pressure detection module and a control module,
the control module is used for controlling the power on and off of the lamp strip;
the voltage division detection module is used for detecting the voltage of the lamp strip and feeding the voltage back to the MCU;
the MCU is used for controlling the on-off of the control module according to the voltage of the lamp strip.
2. A light strip controller anti-short circuit according to claim 1, characterized in that: the voltage division detection module comprises a first voltage division resistor and a second voltage division resistor, a detection end of the MCU is used for being externally connected with the lamp strip after passing through the first voltage division resistor, and the detection end of the MCU is grounded after passing through the second voltage division resistor.
3. A light strip controller anti-short circuit according to claim 1, characterized in that: the control module comprises a plurality of control units, each control unit comprises a switch tube, a signal end of each switch tube is connected with the MCU, and two control ends of each switch tube are respectively grounded and externally connected with a lamp belt.
4. A light strip controller anti-short circuit according to claim 3, characterized in that: the switch tube is an MOS tube.
5. A light strip controller anti-short circuit according to claim 3, characterized in that: the control unit further comprises a first resistor and a second resistor, two ends of the first resistor are respectively connected with the signal end of the switch tube and the MCU, one end of the second resistor is connected between the signal end of the switch tube and the first resistor, and the other end of the second resistor is grounded.
6. A light strip controller anti-short circuit according to claim 1, characterized in that: still including the interface that is used for external lamp area, MCU warp partial pressure detection module connect in the connection end of interface, MCU warp control module connect in the control end of interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120082247.8U CN214046089U (en) | 2021-01-13 | 2021-01-13 | Short circuit is prevented to lamp area controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120082247.8U CN214046089U (en) | 2021-01-13 | 2021-01-13 | Short circuit is prevented to lamp area controller |
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| Publication Number | Publication Date |
|---|---|
| CN214046089U true CN214046089U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120082247.8U Active CN214046089U (en) | 2021-01-13 | 2021-01-13 | Short circuit is prevented to lamp area controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115377936A (en) * | 2022-07-26 | 2022-11-22 | 东莞市阿尔法电子科技有限公司 | Short-circuit protection structure of atomizing device and atomizing device |
-
2021
- 2021-01-13 CN CN202120082247.8U patent/CN214046089U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115377936A (en) * | 2022-07-26 | 2022-11-22 | 东莞市阿尔法电子科技有限公司 | Short-circuit protection structure of atomizing device and atomizing device |
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