CN101835313A - LED control device with current monitoring function - Google Patents
LED control device with current monitoring function Download PDFInfo
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- CN101835313A CN101835313A CN201010176246A CN201010176246A CN101835313A CN 101835313 A CN101835313 A CN 101835313A CN 201010176246 A CN201010176246 A CN 201010176246A CN 201010176246 A CN201010176246 A CN 201010176246A CN 101835313 A CN101835313 A CN 101835313A
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Abstract
The invention discloses an LED control device with a current monitoring function, comprising a control module and a power management functional module, wherein the control module is used for receiving control signals and driving and controlling all external LED units; the power management functional module is provided with at least one current detection unit and an alarm unit; the current detection units are used for detecting actual current, comparing the actual current with preset current and outputting a current comparison result; and the alarm unit is used for sending out alarm signals according to the current comparison result. In the invention, the actual input current or the actual output current or the actual input and output current of the LED control device can be detected so as to distinguish fault positions when a PCB (Printed circuit board), a drive chip, a control chip or an LED lamp is burnt out.
Description
Technical field
The present invention relates to lighting device, particularly relate to a kind of LED control device of belt current monitoring function.
Background technology
In the prior art, a LED product, generally all form by some parts, for example, one LED display can comprise the LED lamp, pcb board, control chip, chip for driving or the like, therefore, when this LED display breaks down, as burn plate, or drive or control burns out, or the LED lamp such as burns out at problem, then being difficult to differentiation is the pcb board circuit problem on earth, still drive or the control chip circuit problem, or LED circuit for lamp problem, and cause electric current excessive and pcb board is burnt out, maybe will drive or control chip burns out, or the LED lamp burnt out, therefore, be difficult to the source point of failure judgement.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
Technical problem to be solved by this invention is, a kind of current monitoring function that has is provided, can monitor actual current and predetermined current size reduced value, thereby can burn out or chip for driving burns out, control chip burns out or LED lamp when burning out, to distinguish the position that fault takes place at pcb board.
Technical scheme of the present invention is as follows: a kind of LED control device of belt current monitoring function wherein, comprises control module and power management functional module; Described control module is used to receive control signal, outside each the LED unit of drive controlling; Described power management functional module is provided with at least one current detecting unit and alarm unit; Described current detecting unit is used to detect actual current, and contrasts the output current comparing result with predetermined current; Described alarm unit sends alarm signal according to described electric current comparing result.
The LED control device of described belt current monitoring function, wherein, described current detecting unit is connected with the power supply input pin, is used to detect the actual current of input.
The LED control device of described belt current monitoring function, wherein, described current detecting unit is connected with the power supply output pin, is used to detect the actual current of output.
The LED control device of described belt current monitoring function, wherein, described current detecting unit is connected with power supply input pin, power supply output pin respectively, is used for detecting respectively the actual current of input, output.
The LED control device of described belt current monitoring function wherein, is provided with two described current detecting units, is connected with power supply input pin, power supply output pin respectively, is used for detecting respectively the actual current of input, output.
The LED control device of described belt current monitoring function wherein, also comprises an input interface, is connected with described current detecting unit, is used to receive outside input, and described predetermined current is set.
The LED control device of described belt current monitoring function, wherein, described power management functional module also is provided with an autocontrol switch, described autocontrol switch is connected with external power cord, and, also be connected with described current detecting unit, be used for when described actual current during greater than described predetermined current, the external power source input is also cut off in automatic disconnection.
The LED control device of described belt current monitoring function, wherein, described alarm unit is connected with described autocontrol switch, is used for sending alarm signal when described autocontrol switch disconnects.
The LED control device of described belt current monitoring function, wherein, described current detecting unit also is connected with memory cell, is used for the described electric current comparing result of output storage.
The LED control device of described belt current monitoring function, wherein, one functions of redundancy and fault tolerance module also is set, be connected with described control module, receive a main signal circuit and at least one control signal respectively, and be used to select the control signal of described main signal line input from signal line input, or when described main signal line fault, the control signal that selection is respectively imported from signal line, and send to described control module.
Adopt such scheme, the present invention is by being provided with power management functional module in the LED control device, and described power management functional module is provided with at least one current detecting unit and alarm unit; Detect actual current by current detecting unit, and contrast with predetermined current, send alarm signal by described alarm unit again, thereby whether the electric current that can know described LED control device input and/or output is excessive, thereby can know it is because the electric current of pcb board circuit or LED control device circuit or LED circuit for lamp is excessive, and pcb board or LED control device or LED lamp are burnt out, thereby distinguish the position of breaking down.
Description of drawings
Fig. 1 is the schematic diagram of one embodiment of the present invention;
Fig. 2 is the schematic diagram of a kind of execution mode of power management functional module among the present invention;
Fig. 3 is the schematic diagram of the another kind of execution mode of power management functional module among the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in Figure 1, present embodiment provides a kind of LED control device of belt current monitoring function, the LED control device of described belt current monitoring function is the control device that is used to control the external LED display unit, as control each LED display, each LED lamp decoration product, for example, described LED control device can be control chip that various functions are set, constant-current driven chip, constant voltage driving chip etc.
Described LED control device comprises control module and power management functional module; Wherein, control module can be connected with the control signal generation source of outside, as, being connected with video source, video source is according to video file generation video control signal; Described control module then is used to receive control signal, and control signal is converted to the signal of telecommunication, and send to each LED unit, be used for each LED unit of drive controlling, make each LED unit according to described control signal display text, figure, letter or video cartoon, perhaps, realize display effects such as glimmering, chase according to described control signal.
Wherein, each LED unit comprises one or more LED, each LED can be for red LED or/and blue led or/and green LED, its encapsulation can be direct insertion LED or surface welded LED.
Described power management functional module is provided with one or more current detecting units and alarm unit; For example, a current detecting unit is set, wherein, described current detecting unit is used to detect actual current, described actual current can be the input current of described LED control device, or output current, or input current and output current, by detecting actual current, can know the size of LED control device input and output electric current, and the predetermined current contrast with setting in advance can obtain the electric current comparing result, because the general end of LED control device is connected with the pcb board power circuit, the other end is connected with the LED element circuit, therefore, promptly can know the pcb board output current, and the big or small relativity of LED unit input current and predetermined current; Wherein, the electric current comparing result comprise actual current greater than predetermined current or, actual current equals predetermined current, perhaps, actual current is less than predetermined current, thereby exports each comparing result to alarm unit.
Described alarm unit is according to described electric current comparing result, send alarm signal, usually, can be provided with when actual current during more than or equal to predetermined current, described alarm unit sends alarm signal, can play the purpose of early warning, thereby in time find alarm signal, confirm whether described LED control device electric current is excessive, perhaps, whether the electric current of described LED control device input is excessive, and easily each element burnt out; Perhaps, also can be provided with when actual current during more than or equal to predetermined current, described alarm unit sends first alarm signal, when actual current during less than predetermined current, described alarm unit sends another second alarm signal different with first alarm signal, perhaps, it is the 3rd alarm signal that described LED display unit input actual current and predetermined current reduced value can also be set, it is the 4th alarm signal that described LED display unit output actual current and predetermined current reduced value are set, thereby can distinguish the magnitude relationship of knowing actual current and predetermined current, confirm whether described LED control device electric current is excessive, perhaps, whether the electric current of described LED control device input is excessive, and easily each element burnt out.
Embodiment 2
As shown in Figure 2, on the basis of above-mentioned each example, in the LED control device of the belt current monitoring function that present embodiment provided, described current detecting unit is connected with the power supply input pin, be used to detect the actual current of power supply input pin input, by detecting the actual current of power supply input pin, whether the electric current that can know input is greater than predetermined current, and, by the alarm unit output alarm signal, so, when pcb board burns out, or LED matrix is when burning out, then can know it is burnt out because the pcb board electric current is excessive, but not LED control device reason, thereby responsibility distinguished.
Perhaps, described current detecting unit is connected with the power supply output pin, be used to detect the actual current of output, by detecting the actual current of power supply output pin, whether the actual current that can know described LED control device inside is greater than predetermined current, and, by the alarm unit output alarm signal, so, when the LED control device burns out, or the LED unit can know that then it burns out because of the electric current of LED control device own is crossed senior general, or it burns out because of the electric current in LED unit own is crossed senior general when burning out, or the LED unit is burnt out, thereby distinguish responsibility because of LED control device electric current is excessive.
Perhaps, described current detecting unit respectively with the power supply input pin, the power supply output pin is connected, can detect first actual current of power supply input pin input and second actual current of described LED control device inside respectively, alarm unit can be according to first actual current and the predetermined current contrast of power supply input pin input, send first alarm signal, and, alarm unit can be according to second actual current and the predetermined current contrast of power supply output pin output, send second alarm signal, thereby can know it is because the pcb board circuit, or LED control device circuit, or the electric current of LED element circuit is excessive, and with pcb board, or LED control device, or the LED unit burns out, thereby distinguish the generation source of fault, and can confirm faulty item and position thereof.
Perhaps, two described current detecting units can also be set, one of them current detecting unit is connected with the power supply input pin, be used to detect the input actual current of described LED control device, and contrast with predetermined current, comparing result is sent to alarm unit, and alarm unit sends first alarm signal; And, another current detecting unit is connected with the power supply output pin, be used to detect the output actual current of described LED control device, and contrast with predetermined current, comparing result is sent to alarm unit, alarm unit sends second alarm signal; So, detect respectively, make testing result more accurate.
Embodiment 3
On the basis of above-mentioned each example, in the LED control device of the belt current monitoring function that present embodiment provided, also comprise an input interface, wherein input interface is connected with described current detecting unit, and, also by circuit and external input terminals, by input input predetermined current, and input to input interface by circuit, receive outer input data by input interface, thereby described predetermined current can be set, and for example, described input interface can be USB interface, DVI interface, netting twine interface or the like.
Embodiment 4
On the basis of above-mentioned each example, in the LED control device of the belt current monitoring function that present embodiment provided, described power management functional module also is provided with an autocontrol switch, wherein, described autocontrol switch is connected with external power cord, as, be connected with the external power source incoming line.And, described autocontrol switch also is connected with described current detecting unit, and is when described actual current during greater than described predetermined current, excessive and described LED control device is burnt out for fear of electric current, described autocontrol switch automatic disconnection is also cut off the external power source input, thereby avoids the generation of fault.
And described alarm unit is connected with described autocontrol switch, when described autocontrol switch disconnects, then shows described actual current greater than described predetermined current, and described alarm unit sends alarm signal.
And described current detecting unit also is connected with memory cell, and described memory cell can be arranged on the inside of described LED control device, perhaps, is arranged on the outside of described LED control device.Described current detecting unit is being judged described electric current comparing result, also exporting described electric current comparing result to described memory cell stores, by storing described electric current comparing result, described electric current comparing result record can be inquired about at any time, thereby the excessive situation of input current can be avoided taking place once more.
Embodiment 5
On the basis of above-mentioned each example in place, in the LED control device of the belt current monitoring function that present embodiment provided, one functions of redundancy and fault tolerance module also is set, the functions of redundancy and fault tolerance module is connected with external signal line, the other end is connected with described control module, receive the control signal from the signal line input of an outside main signal circuit and one or more respectively, and, be used to select the control signal of described main signal line input, send to described control module, and, when described main signal line fault, then described functions of redundancy and fault tolerance module also is used to select respectively the control signal from the signal line input, and sends to described control module.
Wherein, main signal line is used to transmit main control signal; Respectively from holding wire be used for the transmission respectively from control signal, described main control signal be identical control signal respectively from control signal, can be synchronous or asynchronous signal.
When main signal line and respectively all just often, then preferentially select described main signal line for use from holding wire, when when judging described main signal line fault, then switch to select for use arbitrary described from holding wire.So, can make from the control signal of signal wire transmits is the backup of main signal line control signals transmitted, when the main signal line fault, can adopt respectively from the signal wire transmits control signal, the control signal transmission is stable, reliable, make after main signal line breaks down, described flexible LED display screen still can operate as normal, the reliability height.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (10)
1. the LED control device of a belt current monitoring function is characterized in that, comprises control module and power management functional module;
Described control module is used to receive control signal, outside each the LED unit of drive controlling;
Described power management functional module is provided with at least one current detecting unit and alarm unit;
Described current detecting unit is used to detect actual current, and contrasts the output current comparing result with predetermined current;
Described alarm unit sends alarm signal according to described electric current comparing result.
2. the LED control device of belt current monitoring function according to claim 1 is characterized in that, described current detecting unit is connected with the power supply input pin, is used to detect the actual current of input.
3. the LED control device of belt current monitoring function according to claim 1 is characterized in that, described current detecting unit is connected with the power supply output pin, is used to detect the actual current of output.
4. the LED control device of belt current monitoring function according to claim 1 is characterized in that described current detecting unit is connected with power supply input pin, power supply output pin respectively, is used for detecting respectively the actual current of input, output.
5. the LED control device of belt current monitoring function according to claim 1, it is characterized in that, two described current detecting units are set, are connected with power supply input pin, power supply output pin respectively, be used for detecting respectively the actual current of input, output.
6. the LED control device of belt current monitoring function according to claim 1 is characterized in that, also comprises an input interface, is connected with described current detecting unit, is used to receive outside input, and described predetermined current is set.
7. the LED control device of belt current monitoring function according to claim 1, it is characterized in that, described power management functional module also is provided with an autocontrol switch, described autocontrol switch is connected with external power cord, and, also be connected with described current detecting unit, be used for when described actual current during greater than described predetermined current, the external power source input is also cut off in automatic disconnection.
8. the LED control device of belt current monitoring function according to claim 7 is characterized in that, described alarm unit is connected with described autocontrol switch, is used for sending alarm signal when described autocontrol switch disconnects.
9. the LED control device of belt current monitoring function according to claim 1 is characterized in that described current detecting unit also is connected with a memory cell, is used for the described electric current comparing result of output storage.
10. the LED control device of belt current monitoring function according to claim 1, it is characterized in that, one functions of redundancy and fault tolerance module also is set, be connected with described control module, receive a main signal circuit and at least one control signal respectively, and be used to select the control signal of described main signal line input from signal line input, or when described main signal line fault, the control signal that selection is respectively imported from signal line, and send to described control module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010176246.6A CN101835313B (en) | 2010-05-19 | 2010-05-19 | LED control device with current monitoring function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010176246.6A CN101835313B (en) | 2010-05-19 | 2010-05-19 | LED control device with current monitoring function |
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| CN101835313A true CN101835313A (en) | 2010-09-15 |
| CN101835313B CN101835313B (en) | 2014-10-01 |
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| CN201010176246.6A Expired - Fee Related CN101835313B (en) | 2010-05-19 | 2010-05-19 | LED control device with current monitoring function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102169666A (en) * | 2011-03-17 | 2011-08-31 | 深圳市中庆微科技开发有限公司 | Intelligent light emitting diode (LED) display system capable of detecting on line |
| TWI474013B (en) * | 2013-04-16 | 2015-02-21 | Nat Univ Chin Yi Technology | Smart manage device for power gateway |
| CN105407596A (en) * | 2015-11-20 | 2016-03-16 | 芜湖锐芯电子科技有限公司 | Pulse type LED driving circuit |
| CN107271821A (en) * | 2017-07-14 | 2017-10-20 | 中国质量认证中心宁波（慈溪）检测中心 | The intelligent checking system and method for a kind of LED control devices |
| CN111263492A (en) * | 2020-02-27 | 2020-06-09 | 青岛亿联客信息技术有限公司 | Intelligent lamp and lighting system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169666A (en) * | 2011-03-17 | 2011-08-31 | 深圳市中庆微科技开发有限公司 | Intelligent light emitting diode (LED) display system capable of detecting on line |
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| CN105407596A (en) * | 2015-11-20 | 2016-03-16 | 芜湖锐芯电子科技有限公司 | Pulse type LED driving circuit |
| CN107271821A (en) * | 2017-07-14 | 2017-10-20 | 中国质量认证中心宁波（慈溪）检测中心 | The intelligent checking system and method for a kind of LED control devices |
| CN111263492A (en) * | 2020-02-27 | 2020-06-09 | 青岛亿联客信息技术有限公司 | Intelligent lamp and lighting system |
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| CN101835313B (en) | 2014-10-01 |
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Effective date of registration: 20181107 Address after: 225654 Jiangsu Yangzhou Gaoyou City Guo Ji Town Industrial Concentration Area Patentee after: Jiangsu sun and moon Photoelectric Technology Co., Ltd. Address before: 100085 E402, Ying Chun power building, 1 hospital, Haidian District Road, Beijing. Patentee before: Beijing Zhongqing Micro Digital Equipment Development Co., Ltd. |
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