CN101835313B - LED control device with current monitoring function - Google Patents
LED control device with current monitoring function Download PDFInfo
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- CN101835313B CN101835313B CN201010176246.6A CN201010176246A CN101835313B CN 101835313 B CN101835313 B CN 101835313B CN 201010176246 A CN201010176246 A CN 201010176246A CN 101835313 B CN101835313 B CN 101835313B
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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 prior art, a LED product, generally all by some parts, formed, for example, one LED display can comprise LED lamp, pcb board, control chip, drive chip etc., therefore, when this LED display breaks down, as burn plate, or drive or control and burn out, or LED lamp such as burns out at the problem, being difficult to differentiation is pcb board circuit problem on earth, or drive or control chip circuit problem, or LED circuit for lamp problem, and cause electric current excessive and pcb board is burnt out, maybe driving or control chip are burnt out, or LED lamp is burnt out, therefore, be difficult to the source point of failure judgement.
Therefore, there is defect in prior art, needs to improve.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of with current monitoring function, can monitor actual current and predetermined current size reduced value, thereby can burn out or drive chip to burn out at pcb board, when control chip burns out or LED lamp burns out, to distinguish the position of fault generation.
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, for reception control signal, drives and controls outside each LED unit; Described power management functional module arranges at least one current detecting unit and alarm unit; Described current detecting unit is for detection of actual current, and with predetermined current contrast, output current comparing result; Described alarm unit, according to described electric current comparing result, sends alarm signal.
The LED control device of described belt current monitoring function, wherein, described current detecting unit is connected with power supply input pin, for detection of the actual current of input.
The LED control device of described belt current monitoring function, wherein, described current detecting unit is connected with power supply output pin, for detection of 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, for detecting respectively the actual current of input, output.
The LED control device of described belt current monitoring function, wherein, arrange two described in current detecting unit, be connected with power supply input pin, power supply output pin respectively, 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, for receiving outside input, described predetermined current is set.
The LED control device of described belt current monitoring function, wherein, described power management functional module also arranges an autocontrol switch, described autocontrol switch is connected with external power cord, and, also be connected with described current detecting unit, for when described actual current is greater than described predetermined current, automatically disconnects and cut off external power source input.
The LED control device of described belt current monitoring function, wherein, described alarm unit is connected with described autocontrol switch, for when described autocontrol switch disconnects, sends alarm signal.
The LED control device of described belt current monitoring function, wherein, described current detecting unit is also connected with memory cell, for exporting the described electric current comparing result of storage.
The LED control device of described belt current monitoring function, wherein, one functions of redundancy and fault tolerance module is also set, be connected with described control module, receive respectively a main signal circuit and at least one control signal from signal line input, and for selecting the control signal of described main signal line input, or when described main signal line fault, select each from the control signal of signal line input, and send to described control module.
Adopt such scheme, the present invention by arranging power management functional module in LED control device, and described power management functional module arranges at least one current detecting unit and alarm unit; By current detecting unit, detect actual current, and contrast with predetermined current, by described alarm unit, send alarm signal 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.
Accompanying drawing explanation
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 in the present invention;
Fig. 3 is the schematic diagram of the another kind of execution mode of power management functional module in 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, the 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 for controlling the control device of external LED display unit, as control each LED display, each LED lamp decoration product, for example, described LED control device can drive chip etc. for control chip, constant-current driven chip, the constant voltage of various functions is set.
Described LED control device comprises control module and power management functional module; Wherein, control module can be connected with outside control signal generation source, as, being connected with video source, video source is according to video file generation video control signal; Described control module is for reception control signal, and control signal is converted to the signal of telecommunication, and send to each LED unit, be used for driving each LED unit of control, make each LED unit according to described control signal display text, figure, letter or video cartoon, or, according to described control signal, realize and the display effect such as glimmer, chase.
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 arranges one or more current detecting units and alarm unit, for example, a current detecting unit is set, wherein, described current detecting unit is for detection of 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, with the predetermined current contrast setting in advance, can obtain electric current comparing result, because the general one end of LED control device is connected with pcb board power circuit, the other end is connected with LED element circuit, therefore, can know pcb board output current, and the big or small relativity of LED unit input current and predetermined current, wherein, electric current comparing result comprise actual current be greater than predetermined current or, actual current equals predetermined current, or 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 arrange when actual current is more than or equal to predetermined current, described alarm unit sends alarm signal, can play the object of early warning, thereby find in time alarm signal, confirm that whether described LED control device electric current is excessive, or, whether the electric current of described LED control device input is excessive, and easily each element burnt out, or, also can arrange when actual current is more than or equal to predetermined current, described alarm unit sends the first alarm signal, when actual current is less than predetermined current, described alarm unit sends another second alarm signal different from the first alarm signal, or, 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 that whether described LED control device electric current is excessive, or, whether the electric current of described LED control device input is excessive, and easily each element is 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 the present embodiment provides, described current detecting unit is connected with power supply input pin, actual current for detection of the input of power supply input pin, 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 alarm unit output alarm signal, so, when pcb board burns out, or LED matrix is when burn out, can know because pcb board electric current is excessive and be burnt out, but not LED control device reason, thereby differentiation responsibility.
Or, described current detecting unit is connected with power supply output pin, actual current for detection 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 alarm unit output alarm signal, so, when LED control device burns out, or LED unit is when burn out, can know that it burns out because the electric current of LED control device own is crossed senior general, or it burns out because the electric current in LED unit own is crossed senior general, or because LED control device electric current is excessive, LED unit is burnt out, thereby differentiation responsibility.
Or, described current detecting unit respectively with power supply input pin, power supply output pin is connected, can detect respectively the first actual current of power supply input pin input and the second actual current of described LED control device inside, alarm unit can be according to the first actual current of power supply input pin input and predetermined current contrast, send the first alarm signal, and, alarm unit can be according to the second actual current of power supply output pin output and predetermined current contrast, send the second alarm signal, thereby can know it is because pcb board circuit, or LED control device circuit, or the electric current of LED element circuit is excessive, and by pcb board, or LED control device, or LED unit burns out, thereby distinguish the generation source of fault, and can confirm faulty item and position thereof.
Or, two described current detecting units can also be set, one of them current detecting unit is connected with power supply input pin, input actual current for detection of described LED control device, and contrast with predetermined current, comparing result is sent to alarm unit, and alarm unit sends the first alarm signal; And, another current detecting unit is connected with power supply output pin, for detection of the output actual current of described LED control device, and contrast with predetermined current, comparing result is sent to alarm unit, alarm unit sends the 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 the present embodiment provides, 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, by input interface, receive outer input data, thereby described predetermined current can be set, and for example, described input interface can be USB interface, DVI interface, cable interface etc.
Embodiment 4
On the basis of above-mentioned each example, in the LED control device of the belt current monitoring function that the present embodiment provides, described power management functional module also arranges an autocontrol switch, wherein, described autocontrol switch is connected with external power cord, as, be connected with external power source input line.And, described autocontrol switch is also connected with described current detecting unit, when described actual current is greater than described predetermined current, excessive and described LED control device is burnt out for fear of electric current, described autocontrol switch automatically disconnects and cuts off 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, show that described actual current is greater than described predetermined current, described alarm unit sends alarm signal.
And described current detecting unit is also connected with memory cell, described memory cell can be arranged on the inside of described LED control device, or, be arranged on the outside of described LED control device.Described current detecting unit is at the described electric current comparing result of judgement, 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 again occurring.
Embodiment 5
On the basis of above-mentioned each example in place, in the LED control device of the belt current monitoring function that the present embodiment provides, one functions of redundancy and fault tolerance module is also set, functions of redundancy and fault tolerance module is connected with external signal line, the other end is connected with described control module, receive respectively the control signal from signal line input of an outside main signal circuit and one or more, and, for selecting the control signal of described main signal line input, send to described control module, and, when described main signal line fault, described functions of redundancy and fault tolerance module is also for selecting each from the control signal of signal line input, and send to described control module.
Wherein, main signal line is used for transmitting main control signal; Each is used for transmitting each from control signal from holding wire, and described main control signal is identical control signal from control signal with each, can be synchronous or asynchronous signal.
When main signal line and each are all normal from holding wire, preferentially select described main signal line, when in the described main signal line fault of judgement, switch to select arbitrary described from holding wire.So, can make from the control signal of holding wire transmission is the backup of the control signal of main signal line transmission, when main signal line fault, can adopt each from holding wire transmission of control signals, control signal transmission is stable, reliable, make after main signal line breaks down, described flexible LED display screen still can normally be worked, and reliability is high.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (5)
1. a LED control device for belt current monitoring function, is characterized in that, comprises control module and power management functional module;
Described control module, for reception control signal, drives and controls outside each LED unit;
Described power management functional module arranges at least one current detecting unit and alarm unit;
Described current detecting unit is for detection of actual current, and with predetermined current contrast, output current comparing result;
Described alarm unit, according to described electric current comparing result, sends alarm signal;
Described current detecting unit is connected with power supply input pin, power supply output pin respectively, for detecting respectively the actual current of input, output;
Described current detecting unit is connected with power supply input pin, power supply output pin respectively, detect respectively the first actual current of power supply input pin input and the second actual current of described LED control device inside, described alarm unit is according to the first actual current of power supply input pin input and predetermined current contrast, send the first alarm signal, and, alarm unit, according to the second actual current of power supply output pin output and predetermined current contrast, sends the second alarm signal;
One functions of redundancy and fault tolerance module is also set, be connected with described control module, receive respectively a main signal circuit and at least one control signal from signal line input, and for selecting the control signal of described main signal line input, or when described main signal line fault, select each from the control signal of signal line input, and send to described control module.
2. 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, for receiving outside input, described predetermined current is set.
3. the LED control device of belt current monitoring function according to claim 1, it is characterized in that, described power management functional module also arranges an autocontrol switch, described autocontrol switch is connected with external power cord, and, also be connected with described current detecting unit, for when described actual current is greater than described predetermined current, automatically disconnects and cut off external power source input.
4. the LED control device of belt current monitoring function according to claim 3, is characterized in that, described alarm unit is connected with described autocontrol switch, for when described autocontrol switch disconnects, sends alarm signal.
5. the LED control device of belt current monitoring function according to claim 1, is characterized in that, described current detecting unit is also connected with a memory cell, for exporting the described electric current comparing result of storage.
Priority Applications (1)
| 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 |
|---|---|---|---|
| CN201010176246.6A CN101835313B (en) | 2010-05-19 | 2010-05-19 | LED control device with current monitoring function |
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| Publication Number | Publication Date |
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| CN101835313A CN101835313A (en) | 2010-09-15 |
| CN101835313B true 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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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169666B (en) * | 2011-03-17 | 2016-04-27 | 深圳市中庆微科技开发有限公司 | The LED display system that a kind of intelligent online detects |
| 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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| JP2001264368A (en) * | 2000-03-17 | 2001-09-26 | Kawamura Electric Inc | Overcurrent warning device with needless-power detecting function |
| CN2585242Y (en) * | 2002-05-24 | 2003-11-05 | 丰叶电器制造厂有限公司 | Load overcurrent alarming device and connector overtemperature alarming device |
| CN2766245Y (en) * | 2005-01-25 | 2006-03-22 | 扬州双鸿电子有限公司 | Multifunctional current detecting device |
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Patent Citations (4)
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| KR20010080785A (en) * | 1999-12-20 | 2001-08-25 | 우영진 | Overload Cutoff Device for Hoist and Crane |
| JP2001264368A (en) * | 2000-03-17 | 2001-09-26 | Kawamura Electric Inc | Overcurrent warning device with needless-power detecting function |
| CN2585242Y (en) * | 2002-05-24 | 2003-11-05 | 丰叶电器制造厂有限公司 | Load overcurrent alarming device and connector overtemperature alarming device |
| CN2766245Y (en) * | 2005-01-25 | 2006-03-22 | 扬州双鸿电子有限公司 | Multifunctional current detecting device |
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| CN101835313A (en) | 2010-09-15 |
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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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Granted publication date: 20141001 Termination date: 20190519 |
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