CN101841961A - 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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- CN101841961A CN101841961A CN201010176160A CN201010176160A CN101841961A CN 101841961 A CN101841961 A CN 101841961A CN 201010176160 A CN201010176160 A CN 201010176160A CN 201010176160 A CN201010176160 A CN 201010176160A CN 101841961 A CN101841961 A CN 101841961A
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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 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 electric current and temperature-monitoring function of having is provided, and can detect actual current and actual temperature, thereby accurately judges the belt current of the source point that burns out fault and the LED control device of temperature-monitoring function.
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; The signal line that is provided with on described control module and the pcb board is connected, and is used to receive control signal, outside each the LED unit of drive controlling; Described power management functional module is provided with the current detecting unit and first alarm unit; Described current detecting unit is used to detect the actual current of LED control device power pin, and contrasts output current comparing result to the first alarm unit with predetermined current; Described first alarm unit sends first alarm signal according to described electric current comparing result; Described heat management functional module is provided with the temperature detecting unit and second alarm unit; Described temperature detecting unit is used to detect the actual temperature of described LED control device, and contrasts output temperature comparing result to the second alarm unit with preset temperature; Described second alarm unit sends second alarm signal according to described temperature comparing result.
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 also is connected with the LED unit with the pcb board of outside respectively, be used for detecting respectively the actual temperature of pcb board and LED unit, and with preset temperature contrast, output temperature comparing result to the second alarm unit; Described second alarm unit sends the 3rd alarm signal and the 4th alarm signal respectively according to the temperature comparing result.
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 is provided with a PWM modulator, is connected with described temperature detecting unit, power input respectively, be used for adjusting the electric current of power supply input pin when described actual temperature during greater than preset temperature.The LED control device of described belt current and temperature-monitoring function, it is characterized in that, a heat-sink unit also is set, be connected with described temperature detecting unit, be used for accelerating the inner or outside radiating rate of described LED control device when described actual temperature during greater than preset temperature.
The LED control device of described belt current and temperature-monitoring function, wherein, described first alarm unit and described second alarm unit are set to LED light, and described first alarm signal and described second alarm signal are respectively heterochromatic indicator light signal.
The LED control device of described belt current and temperature-monitoring function wherein, also is provided with a single line integrated functional module, is connected with described control module, is used to receive the control signal of only importing 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 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 and heat management functional module in the LED control device, and described power management functional module is provided with the current detecting unit and first alarm unit; Detect actual current by current detecting unit, and contrast with predetermined current, send alarm signal by described first 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 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 the temperature detecting unit and second alarm unit are set, detect actual temperature, contrast with preset temperature by temperature detecting unit, and send alarm signal, thereby can further accurately judge the position that burns out fault by second alarm unit.
Description of drawings
Fig. 1 is the schematic diagram of embodiment 1 among the present invention;
Fig. 2 is the schematic diagram of embodiment 2 among the present invention;
Fig. 3 is the schematic diagram of embodiment 3 among the present invention;
Fig. 4 is the schematic diagram of embodiment 4 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 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 the control device that is used to control the external LED product, 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, power management functional module and heat management functional module; Wherein, control module is by being connected with the signal line that is provided with on the pcb board, and, be connected with the control signal generation source of outside by the signal line that is provided with on the pcb board, as, being connected with video source, video source sends video control signal according to video file; 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, encapsulation can be direct insertion LED or surface welded LED.
Described power management functional module is provided with the current detecting unit and first alarm unit; Wherein, described current detecting unit can with the electric current input pin, perhaps be connected with the electric current output pin, perhaps be connected respectively with the electric current output pin, be used for detecting respectively input actual current or output actual current or the input actual current and the output actual current of described LED control device with the electric current input pin; By detecting actual current, whether the actual current that can know input is greater than predetermined current, perhaps, whether the actual current that can know output is greater than predetermined current, perhaps, whether the actual current that can know the actual current of input and output is respectively greater than predetermined current, and, export first alarm signal by alarm unit, described first alarm signal can be according to described input actual current and predetermined current, and the comparing result between output actual current and the 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 the LED control device burns out or LED unit when burning out, can know that then it burns out because of the pcb board circuit is crossed senior general, or the pcb board electric current crosses senior general LED control device, and the electric current of LED control device own is crossed senior general, and it burns out, or it burns out because of the electric current in LED unit own is crossed senior general, or the LED unit is burnt out etc. because of LED control device electric current is excessive, thereby can in time find the source point that burns out fault, and, find corresponding producer to solve the problem that burns out.
And described heat management functional module is provided with the temperature detecting unit and second alarm unit; Wherein, described temperature detecting unit is used to detect the actual temperature of described LED control device, for example, described actual temperature is the internal temperature of LED control device, by detected actual temperature and preset temperature are contrasted, can know the big or small relativity of actual temperature and preset temperature, and, be sent to second alarm unit, send second alarm signal by second alarm unit, so, can find the heat accumulation that whether exists of described LED control device inside early, as, some element radiating weak effect and the LED control device is burnt out.
Wherein, described first alarm unit and described second alarm unit can be set to LED light, by LED light indicator current comparing result and temperature comparing result, wherein, described first alarm signal and described second alarm signal can be set to heterochromatic indicator light signal respectively, for example, be set to red LED indicator light and green LED indicator light, perhaps, be set to green LED indicator light and blue led indicator light, when detecting different electric current comparison results, send the alarm signal of different frequency, can distinguish different comparing results, thereby indication burns out the 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 belt current that present embodiment provided and temperature-monitoring function, described temperature detecting unit also is connected with the LED unit with the pcb board of outside respectively, and, described temperature detecting unit also detects the actual temperature of pcb board and LED unit respectively, and contrasts output temperature comparing result to the second alarm unit with preset temperature; Described second alarm unit sends the 3rd alarm signal according to the temperature comparing result of pcb board actual temperature and preset temperature, and, shown in 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 the temperature sense subelement more than three or three, 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 the pcb board, is used to respond to the actual temperature of described pcb board, the 3rd inductor unit can be provided with inside, LED unit, is used to respond to the actual temperature of described LED unit; Be used for responding to respectively described LED control device by each temperature sense subelement, described pcb board, the actual temperature of described LED unit, and each actual temperature sent to described temperature detection subelement, described temperature detection subelement is with each actual temperature, contrast with preset temperature respectively, when a certain actual temperature during greater than preset temperature, being about to the temperature comparing result takes place to report to the police to 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 second alarm unit can be set to different alarm signals, as send different warning lights by LED light, perhaps, send different sound frequencies by audible alarm; For example, according to the actual temperature of described LED control device and the comparing result of preset temperature, described second alarm unit sends the first frequency alarm signal, according to the actual temperature of described pcb board and the comparing result of preset temperature, described second alarm unit sends the 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 the 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 belt current that present embodiment provided and temperature-monitoring function, described heat management functional module also is provided with a PWM modulator, it is pulse-width modulator, described PWM modulator respectively with described temperature detecting unit, and the power supply input pin connects, the actual temperature that detects described LED control device inside when temperature detecting unit is during 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 belt current that present embodiment provided and temperature-monitoring function, one heat-sink unit also is 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 detected actual temperature of temperature detecting unit during greater than preset temperature, then starts described heat-sink unit, described heat-sink unit can be used to accelerate the inner or outside radiating rate of described LED control device, thereby heat is distributed fast, make the radiating effect of described LED control device better, burn out thereby described LED control device can not assembled because of internal heat.
Embodiment 5
On the basis of above-mentioned each example, in the LED control device of belt current that present embodiment provided and temperature-monitoring function, one single line integrated functional module also is set, described single line integrated functional module one end is connected with a holding wire of outside, the other end is connected with described control module, be used to receive the control signal of only importing, and this signal is sent to described control module from a bars circuit.
So, four traditional holding wires can be integrated, use the signal that the DATA signal wire transmits is all, simplified the required circuit of transfer of data, can transmit high-quality Visual Display Data when simplifying the cascade transmission line greatly; And, adopt the mode of video data package, RGB display data signal and CLK clock signal and ENABLE signal be integrated carry out package, and in package, be composed of data packet head and packet tail and error checking and deceive sign indicating number, when allowing to data be transmitted, judged and carried out error correction with rub-out signal with serial mode; So greatly reduce the design difficulty of final products, help designing 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 belt current that present embodiment provided and temperature-monitoring function, 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 belt current and temperature-monitoring function is characterized in that, comprises control module, power management functional module and heat management functional module;
The signal line that is provided with on described control module and the pcb board is connected, and is used to receive control signal, outside each the LED unit of drive controlling;
Described power management functional module is provided with the current detecting unit and first alarm unit;
Described current detecting unit is used to detect the actual current of LED control device power pin, and contrasts output current comparing result to the first alarm unit with predetermined current;
Described first alarm unit sends first alarm signal according to described electric current comparing result;
Described heat management functional module is provided with the temperature detecting unit and second alarm unit;
Described temperature detecting unit is used to detect the actual temperature of described LED control device, and contrasts output temperature comparing result to the second alarm unit with preset temperature;
Described second alarm unit sends second alarm signal according to described temperature comparing result.
2. the LED control device of belt current according to claim 1 and temperature-monitoring function is characterized in that, described actual current is the input actual current of power supply input pin, and/or the output actual current of power supply output pin.
3. 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.
4. the LED control device of belt current according to claim 1 and temperature-monitoring function, it is characterized in that, described temperature detecting unit also is connected with the LED unit with the pcb board of outside respectively, be used for detecting respectively the actual temperature of pcb board and LED unit, and with preset temperature contrast, output temperature comparing result to the second alarm unit; Described second alarm unit sends the 3rd alarm signal and the 4th alarm signal respectively according to the temperature comparing result.
5. the LED control device of belt current according to claim 4 and temperature-monitoring function, it is characterized in that, 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.
6. 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 is provided with a PWM modulator, be connected with described temperature detecting unit, power input respectively, be used for adjusting the electric current of power supply input pin when described actual temperature during greater than preset temperature.
7. the LED control device of belt current according to claim 1 and temperature-monitoring function, it is characterized in that, one heat-sink unit also is set, be connected with described temperature detecting unit, be used for accelerating the inner or outside radiating rate of described LED control device when described actual temperature during greater than preset temperature.
8. the LED control device of belt current according to claim 1 and temperature-monitoring function, it is characterized in that, described first alarm unit and described second alarm unit are set to LED light, and described first alarm signal and described second alarm signal are respectively heterochromatic indicator light signal.
9. 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 also is set, be connected with described control module, be used to receive the control signal of only importing, and send to described control module from a bars circuit.
10. 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 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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| 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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102128368A (en) * | 2010-11-03 | 2011-07-20 | 映瑞光电科技(上海)有限公司 | LED illumination device and drive method thereof |
| CN102289212A (en) * | 2011-04-11 | 2011-12-21 | 深圳市中庆微科技开发有限公司 | Control chip for online detection |
| CN103646625A (en) * | 2013-12-24 | 2014-03-19 | 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 |
| 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 |
| CN108684108A (en) * | 2016-08-02 | 2018-10-19 | 施淑琴 | LED drive power |
| CN110015435A (en) * | 2019-04-12 | 2019-07-16 | 亿航智能设备（广州）有限公司 | Electric aircraft and its cooling system, method, equipment and storage medium |
| 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 |
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| CN102128368A (en) * | 2010-11-03 | 2011-07-20 | 映瑞光电科技(上海)有限公司 | LED illumination device and drive method thereof |
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| 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 |
| CN103646625A (en) * | 2013-12-24 | 2014-03-19 | 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 |
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| 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 |
| CN110015435A (en) * | 2019-04-12 | 2019-07-16 | 亿航智能设备（广州）有限公司 | Electric aircraft and its cooling system, method, equipment and storage medium |
| 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 |
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|---|---|
| CN101841961B (en) | 2014-10-01 |
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