CN101841961B - LED control device with current and temperature monitoring function - Google Patents
LED control device with current and temperature monitoring function Download PDFInfo
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- CN101841961B CN101841961B CN201010176160.3A CN201010176160A CN101841961B CN 101841961 B CN101841961 B CN 101841961B CN 201010176160 A CN201010176160 A CN 201010176160A CN 101841961 B CN101841961 B CN 101841961B
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Abstract
The invention discloses an LED control device with a current and temperature monitoring function, which comprises a control module, a power management function module and a thermal management function module; the control module receives a control signal and drives and controls each external LED unit; the power management function module is provided with a current detection unit and a first alarm unit; the current detection unit detects the actual current of a power pin of the LED control device, compares the actual current with preset current and outputs a current comparison result; the first alarm unit sends out a first alarm signal according to the current comparison result; the thermal management function module is provided with a temperature detection unit and a second alarm unit; and the temperature detection unit detects the actual temperature of the LED control device, compares the actual temperature with preset temperature and outputs a temperature comparison result, and the second alarm unit sends out a second alarm signal according to the temperature comparison result. The invention can monitor the current magnitude and the temperature magnitude of the LED control device and a component connected with the LED control device, so that a source point in which a burning-out fault occurs can be found out.
Description
Technical field
The present invention relates to lighting device, particularly relate to the LED control device of a kind of belt current and temperature-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, provides a kind of with electric current and temperature-monitoring function, can detect actual current and actual temperature, thereby accurately judgement burns out the belt current of source point and the LED control device of temperature-monitoring function of fault.
Technical scheme of the present invention is as follows: the LED control device of a kind of belt current and temperature-monitoring function, wherein, comprises control module, power management functional module and heat management functional module; Described control module is connected with the signal line arranging on pcb board, for reception control signal, drives and controls outside each LED unit; Described power management functional module arranges current detecting unit and the first alarm unit; Described current detecting unit is for detection of the actual current of LED control device power pin, and with predetermined current contrast, output current comparing result to the first alarm unit; Described the first alarm unit, according to described electric current comparing result, sends the first alarm signal; Described heat management functional module set temperature detecting unit and the second alarm unit; Described temperature detecting unit is for detection of the actual temperature of described LED control device, and with preset temperature contrast, output temperature comparing result to the second alarm unit; Described the second alarm unit, according to described temperature comparing result, sends the second alarm signal.
The LED control device of described belt current and temperature-monitoring function, wherein, described actual current is the input actual current of power supply input pin, and/or the output actual current of power supply output pin.
The LED control device of described belt current and temperature-monitoring function, is characterized in that, described actual temperature is the internal temperature of described LED control device.
The LED control device of described belt current and temperature-monitoring function, wherein, described temperature detecting unit is also connected with LED unit with outside pcb board respectively, for detecting respectively the actual temperature of pcb board and LED unit, and contrast output temperature comparing result to the second alarm unit with preset temperature; Described the second alarm unit, according to temperature comparing result, sends respectively the 3rd alarm signal and the 4th alarm signal.
The LED control device of described belt current and temperature-monitoring function, wherein, described temperature detecting unit comprises a temperature detection subelement and at least three temperature sense subelements, each temperature sense subelement is used for responding to respectively the actual temperature of described LED control device, described pcb board, described LED unit, and sends to described temperature detection subelement.
The LED control device of described belt current and temperature-monitoring function, wherein, described heat management functional module also arranges a PWM modulator, is connected respectively with described temperature detecting unit, power input, for when described actual temperature is greater than preset temperature, adjust the electric current of power supply input pin.The LED control device of described belt current and temperature-monitoring function, it is characterized in that, a heat-sink unit is also set, be connected with described temperature detecting unit, for when described actual temperature is greater than preset temperature, accelerate described LED control device inside or outside radiating rate.
The LED control device of described belt current and temperature-monitoring function, wherein, described the first alarm unit and described the second alarm unit are set to LED light, and described the first alarm signal and described the second alarm signal are respectively heterochromatic indicator light signal.
The LED control device of described belt current and temperature-monitoring function, wherein, also arranges a single line integrated functional module, is connected with described control module, for receiving the control signal of only inputting from a bars circuit, and sends to described control module.
The LED control device of described belt current and temperature-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 and heat management functional module in LED control device, and described power management functional module arranges current detecting unit and the first alarm unit; By current detecting unit, detect actual current, and contrast with predetermined current, by described the first 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 element circuit is excessive, and pcb board or LED control device or LED unit are burnt out, thereby distinguish the position that burns out fault; And, by described heat management functional module set temperature detecting unit and the second alarm unit, by temperature detecting unit, detect actual temperature, contrast with preset temperature, and send alarm signal by the second alarm unit, thereby can further accurately judge the position that burns out fault.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment 1 in the present invention;
Fig. 2 is the schematic diagram of embodiment 2 in the present invention;
Fig. 3 is the schematic diagram of embodiment 3 in the present invention;
Fig. 4 is the schematic diagram of embodiment 4 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 the LED control device of a kind of belt current and temperature-monitoring function, the LED control device of belt current and temperature-monitoring function is for controlling the control device of external LED product, 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, power management functional module and heat management functional module; Wherein, control module is by being connected with the signal line arranging on pcb board, and, by the signal line arranging on pcb board, be connected with outside control signal generation source, as, being connected with video source, video source sends video control signal according to video file; 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, encapsulation can be direct insertion LED or surface welded LED.
Described power management functional module arranges current detecting unit and the first alarm unit, wherein, described current detecting unit can with electric current input pin, or be connected with electric current output pin, or be connected respectively with electric current output pin with electric current input pin, for detecting respectively input actual current or output actual current or input actual current and the output actual current of described LED control device, by detecting actual current, whether the actual current that can know input is greater than predetermined current, or, whether the actual current that can know output is greater than predetermined current, or, can know whether the actual current of input and the actual current of output are greater than respectively predetermined current, and, by alarm unit, export the first alarm signal, described the first alarm signal can be according to described input actual current and predetermined current, and the comparing result between output actual current and predetermined current, send different alarm signals, the maximum current setting that described predetermined current can be born according to described LED control device.
So, when pcb board burns out or LED control device burns out or LED unit burns out, can know that it burns out because pcb board circuit is crossed senior general, or pcb board electric current crosses senior general LED control device, the electric current of LED control device own is crossed senior general, and it burns out, 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 etc., thereby can find in time the source point that burns out fault, and, find corresponding producer to solve the problem that burns out.
And, described heat management functional module set temperature detecting unit and the second alarm unit; Wherein, described temperature detecting unit is for detection of the actual temperature of described LED control device, for example, described actual temperature is the internal temperature of LED control device, by the actual temperature detecting and preset temperature are contrasted, can know the big or small relativity of actual temperature and preset temperature, and, be sent to the second alarm unit, by the second alarm unit, send the second alarm signal, so, can find early the heat accumulation that whether exists of described LED control device inside, as, some element radiating weak effect and LED control device is burnt out.
Wherein, described the first alarm unit and described the second alarm unit can be set to LED light, by LED light indicator current comparing result and temperature comparing result, wherein, described the first alarm signal and described the second alarm signal can be set to respectively heterochromatic indicator light signal, for example, be set to red LED indicator light and green LED indicator light, or, be set to green LED indicator light and blue led indicator light, when different electric current comparison results being detected, send the alarm signal of different frequency, can distinguish different comparing results, thereby indication burns out particular location and the reason of fault.
Embodiment 2
As shown in Figure 2, on the basis of above-mentioned each example, in the LED control device of the belt current that the present embodiment provides and temperature-monitoring function, described temperature detecting unit is also connected with LED unit with outside pcb board respectively, and, described temperature detecting unit also detects respectively the actual temperature of pcb board and LED unit, and contrasts output temperature comparing result to the second alarm unit with preset temperature; Described the second alarm unit, according to the temperature comparing result of pcb board actual temperature and preset temperature, sends the 3rd alarm signal, and, shown in the second alarm unit according to the temperature comparing result of LED unit actual temperature and preset temperature, send the 4th alarm signal.
For example, described temperature detecting unit comprises a temperature detection subelement and three or three above temperature sense subelements, as, wherein a temperature sense subelement can be arranged on the inside of LED control device, be used for the actual temperature of induction LED control device inside, the second temperature sense subelement can be arranged on pcb board, for responding to the actual temperature of described pcb board, it is inner that the 3rd inductor unit can arrange LED unit, for responding to the actual temperature of described LED unit, by each temperature sense subelement, be used for responding to respectively described LED control device, described pcb board, the actual temperature of described LED unit, and each actual temperature is sent to described temperature detection subelement, described temperature detection subelement is by each actual temperature, contrast with preset temperature respectively, when a certain actual temperature is greater than preset temperature, being about to temperature comparing result occurs to report to the police to the second alarm unit, described LED control device, according to described pcb board, the actual temperature of described LED unit respectively with the temperature comparing result of preset temperature, described the second alarm unit can be set to different alarm signals, as sent different warning lights by LED light, or, by audible alarm, send different sound frequencies, for example, according to the comparing result of the actual temperature of described LED control device and preset temperature, described the second alarm unit sends first frequency alarm signal, according to the comparing result of the actual temperature of described pcb board and preset temperature, described the second alarm unit sends second frequency alarm signal, according to the actual temperature of described LED unit and the comparing result of preset temperature, described the 3rd alarm unit sends first frequency alarm signal.
Embodiment 3
As shown in Figure 3, on the basis of above-mentioned each example, in the LED control device of the belt current that the present embodiment provides and temperature-monitoring function, described heat management functional module also arranges a PWM modulator, it is pulse-width modulator, described PWM modulator respectively with described temperature detecting unit, and power supply input pin connects, when the actual temperature that described LED control device inside detected when temperature detecting unit is greater than preset temperature, described PWM modulator is adjusted the electric current of described power supply input pin, the electric current of described power supply input pin is diminished, thereby reduce the generation of heat, avoid heat accumulation and the stake of described LED control device is burnt out.
Embodiment 4
As shown in Figure 4, on the basis of above-mentioned each example, in the LED control device of the belt current that the present embodiment provides and temperature-monitoring function, one heat-sink unit is also set, for example, described heat-sink unit can be set to louvre, fin, fan etc., described heat-sink unit can be arranged on the inside of described LED control device, or surface, or its outside, and, described heat-sink unit is connected with described temperature detecting unit, when the actual temperature detecting when temperature detecting unit is greater than preset temperature, start described heat-sink unit, described heat-sink unit can be for accelerating described LED control device inside or outside radiating rate, thereby make heat Quick diffusing, make the radiating effect of described LED control device better, thereby make described LED control device can not assemble and burn out because of internal heat.
Embodiment 5
On the basis of above-mentioned each example, in the LED control device of the belt current that the present embodiment provides and temperature-monitoring function, one single line integrated functional module is also set, described single line integrated functional module one end is connected with an outside holding wire, the other end is connected with described control module, for receiving the control signal of only inputting from a bars circuit, and this signal is sent to described control module.
So, four traditional holding wires can be integrated, use a DATA holding wire to transmit all signals, simplify the required circuit of transfer of data, when greatly simplifying cascade transmission line, can transmit high-quality Visual Display Data; And, adopt the mode that shows data packet, RGB display data signal and CLK clock signal and ENABLE signal are integrated and carry out package, and in package, be composed of data packet head and packet tail and error checking and deceive code, when allowing to serial mode, data be transmitted, with rub-out signal, judged and carried out error correction; So greatly reduce the design difficulty of final products, be conducive to design the innovative product that transmission performance is stable, display effect is good, simple in structure, form is exquisite, reduce design and production cost, enhance productivity.
Embodiment 6
On the basis of above-mentioned each example, in the LED control device of the belt current that the present embodiment provides and temperature-monitoring function, 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 (7)
1. a LED control device for belt current and temperature-monitoring function, is characterized in that, comprises control module, power management functional module and heat management functional module;
Described control module is connected with the signal line arranging on pcb board, for reception control signal, drives and controls outside each LED unit;
Described power management functional module arranges current detecting unit and the first alarm unit;
Described current detecting unit is for detection of the actual current of LED control device power pin, and contrast with predetermined current, output current comparing result to the first alarm unit, described actual current is the input actual current of power supply input pin, and the output actual current of power supply output pin;
Described the first alarm unit, according to described electric current comparing result, sends the first alarm signal;
Described heat management functional module set temperature detecting unit and the second alarm unit;
Described temperature detecting unit is for detection of the actual temperature of described LED control device, and with preset temperature contrast, output temperature comparing result to the second alarm unit;
Described the second alarm unit, according to described temperature comparing result, sends the second alarm signal;
Described temperature detecting unit is also connected with LED unit with outside pcb board respectively, for detecting respectively the actual temperature of pcb board and LED unit, and contrasts output temperature comparing result to the second alarm unit with preset temperature; Described the second alarm unit, according to temperature comparing result, sends respectively the 3rd alarm signal and the 4th alarm signal;
Described temperature detecting unit comprises a temperature detection subelement and at least three temperature sense subelements, each temperature sense subelement is used for responding to respectively the actual temperature of described LED control device, described pcb board, described LED unit, and sends to described temperature detection subelement;
Described the first alarm signal and described the second alarm signal can be set to respectively heterochromatic indicator light signal, and when different electric current comparison results being detected, described heterochromatic indicator light signal sends the alarm signal of different frequency.
2. the LED control device of belt current according to claim 1 and temperature-monitoring function, is characterized in that, described actual temperature is the internal temperature of described LED control device.
3. the LED control device of belt current according to claim 1 and temperature-monitoring function, it is characterized in that, described heat management functional module also arranges a PWM modulator, be connected with described temperature detecting unit, power input respectively, for when described actual temperature is greater than preset temperature, adjust the electric current of power supply input pin.
4. the LED control device of belt current according to claim 1 and temperature-monitoring function, it is characterized in that, one heat-sink unit is also set, be connected with described temperature detecting unit, for when described actual temperature is greater than preset temperature, accelerate described LED control device inside or outside radiating rate.
5. the LED control device of belt current according to claim 1 and temperature-monitoring function, it is characterized in that, described the first alarm unit and described the second alarm unit are set to LED light, and described the first alarm signal and described the second alarm signal are respectively heterochromatic indicator light signal.
6. the LED control device of belt current according to claim 1 and temperature-monitoring function, it is characterized in that, a single line integrated functional module is also set, be connected with described control module, for receiving the control signal of only inputting from a bars circuit, and send to described control module.
7. the LED control device of belt current according to claim 1 and temperature-monitoring function, it is characterized in that, 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.
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| CN201010176160.3A CN101841961B (en) | 2010-05-19 | 2010-05-19 | LED control device with current and temperature monitoring function |
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| CN201010176160.3A CN101841961B (en) | 2010-05-19 | 2010-05-19 | LED control device with current and temperature monitoring function |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128368B (en) * | 2010-11-03 | 2013-03-27 | 映瑞光电科技(上海)有限公司 | LED illumination device and drive method thereof |
| CN102289212B (en) * | 2011-04-11 | 2016-08-03 | 深圳市中庆微科技开发有限公司 | Control chip for online detection |
| CN103646625B (en) * | 2013-12-24 | 2017-02-01 | 广东威创视讯科技股份有限公司 | Current regulation method and system, pre-driver module and programmable logic gate array |
| CN108684108A (en) * | 2016-08-02 | 2018-10-19 | 施淑琴 | LED drive power |
| 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 |
| CN110015435B (en) * | 2019-04-12 | 2021-08-03 | 亿航智能设备（广州）有限公司 | Electric aircraft, heat dissipation system, method, equipment and storage medium thereof |
| CN112184959A (en) * | 2020-09-22 | 2021-01-05 | 深圳市中惠创新科技有限公司 | Electromagnetic induction door lock and key |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2010
- 2010-05-19 CN CN201010176160.3A patent/CN101841961B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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