CN201556400U - LED monitoring circuit - Google Patents
LED monitoring circuit Download PDFInfo
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- CN201556400U CN201556400U CN2009202608637U CN200920260863U CN201556400U CN 201556400 U CN201556400 U CN 201556400U CN 2009202608637 U CN2009202608637 U CN 2009202608637U CN 200920260863 U CN200920260863 U CN 200920260863U CN 201556400 U CN201556400 U CN 201556400U
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- 238000012544 monitoring process Methods 0.000 title abstract description 8
- 238000001514 detection method Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
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Abstract
The utility model provides an LED monitoring circuit, which comprises an LED control unit and a plurality of serially connected LED units. The LED control unit is connected with one end of the LED units. Through monitoring the temperature of the LED circuit in the LED display, the utility model can drive the LED circuit with constant current, protect the LED lamp, prolong the service life of the LED circuit and bring the convenience to maintain the LED display.
Description
Technical field
The utility model relates to LED and shows the field, relates in particular to a kind of LED supervisory circuit.
Background technology
At present full-color LED display screen is along with led chip miniaturization day by day, and its pel spacing is more and more littler, from early stage 5mm, 4mm spacing to 3.5mm, 3mm even the development of 2mm spacing, thereby enriched the product line of LED display.But this also has been with challenge for the LED display modular design, it is the heat dissipation problem of LED display module, if LED display is for a long time in maximum brightness work, or environment temperature continues to raise, or there is power supply short circuit to cause the temperature of LED display module to meet or exceed the ultimate temperature of design for a long time, to bring potential safety hazard, and reduce the mission life of LED lamp.On the other hand, the intellectual monitoring technical development of LED display is also very fast, can realize that to open circuit, the short circuit of constant-current drive circuit single-point detects, but also lacks temperature monitoring and protection to the LED display circuit.
The utility model content
In view of this, the utility model embodiment provides a kind of LED supervisory circuit, realizes the monitoring temperature to led circuit in the light-emitting diode display.
The utility model provides a kind of LED supervisory circuit, and this LED supervisory circuit comprises the LED unit of a LED control module and a plurality of serial connections, and described LED control module links to each other with an end of described LED unit strings, and wherein said LED unit comprises:
Be used for receiving video data and control signal, and upload first of temperature data to LED control module or upper level LED unit and connect plug-in unit from LED control module or upper level LED unit;
Be used for exporting described video data and control signal, and obtain the second connection plug-in unit of described temperature data from next stage LED unit to next stage LED unit;
Be connected plug-in unit with described first and link to each other, be used for being driven the led circuit of lighting by video data and control signal that the described first connection plug-in unit receives;
Link to each other with described led circuit, be used to obtain the temperature sensor of the temperature data of described led circuit;
Link to each other with described temperature sensor, be used for the temperature data that described temperature sensor gets access to is positioned the scrambler of coding;
Described LED control module comprises:
Be connected plug-in unit with first of first order LED unit and link to each other, be used for exporting the output module of described video data and control signal to described first order LED unit strings;
Be connected plug-in unit with first of first order LED unit and link to each other, be used for obtaining the acquisition module of all LED unit through the temperature data of location coding from described first order LED unit strings.
The utility model has been realized the protection to constant-current driving in the led circuit and LED lamp by the monitoring to led circuit temperature in the light-emitting diode display, has prolonged the serviceable life of led circuit, also the maintenance of light-emitting diode display is provided convenience simultaneously.
Description of drawings
Fig. 1 is that the structure of a kind of LED supervisory circuit among the utility model embodiment is formed synoptic diagram;
Fig. 2 is that the structure of the LED control module 10 of a kind of LED supervisory circuit in the utility model preferred embodiment is formed synoptic diagram;
Fig. 3 be in the utility model preferred embodiment in a kind of LED supervisory circuit the structure of control module 130 form synoptic diagram;
Fig. 4 be in the utility model preferred embodiment in a kind of LED supervisory circuit the structure of LED unit 20 form synoptic diagram.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is that the structure of a kind of LED supervisory circuit among the utility model embodiment is formed synoptic diagram, as shown in the figure, this LED supervisory circuit comprises the LED unit of a LED control module 10 and a plurality of serial connections, as the first order LED unit 20 among the figure, LED unit, the second level 30 etc., described LED control module links to each other with an end of described LED unit strings, and described further LED control module can link to each other with a plurality of LED strings.The multi-stage LED cellular construction is all identical, is example with first order LED unit wherein, and described first order LED unit 20 comprises:
Be used for receiving video data and control signal from LED control module 10, and to LED control module 10 or upload first of temperature data and connect plug-in unit 201, if n (n＞1) level LED unit then is to receive video data and control signal from upper level LED unit, and uploads temperature data to upper level LED unit.Concrete described control signal can comprise sweep signal, current regulating signal etc.
Be used for exporting described video data and control signal, and obtain the second connection plug-in unit 202 of described temperature data from next stage LED unit to next stage LED unit.
Being connected plug-in unit 201 with described first and linking to each other, be used for being driven the led circuit 203 of lighting LED by video data and control signal that the described first connection plug-in unit 201 receives, specifically can comprise constant-current driving and LED lamp, is the main heating source of LED unit.Constant-current driving can pass through to regulate according to described video data the brightness of LED lamp, thereby changes the power consumption of led circuit 203, also can pass through to regulate according to described control signal the size of current of constant-current driving, thus the power consumption of change led circuit 203.
Link to each other with described led circuit 203, be used to obtain the temperature sensor 204 of the temperature data of described led circuit 203, further, this temperature sensor 204 can be any in three kinds of 1 line bus sensors, two-wire bus sensor and the three-way bus sensors.
Link to each other with described temperature sensor 204, be used for the temperature data that described temperature sensor 204 gets access to is positioned the scrambler 205 of coding, particularly, scrambler 205 can be binary coder or multilevel code device, preferably can be the binary-coded decimal dial, the temperature data that obtains through location coding promptly is unique corresponding relation with this LED unit 20.
Concrete, described LED unit is for constituting the led module or the LED display board of LED display.
Described LED control module 10 comprises:
Be connected plug-in unit with first of first order LED unit 20 and link to each other, be used for exporting the output module 110 of described video data and control signal to described first order LED unit;
Be connected plug-in unit with first of first order LED unit 20 and link to each other, be used for obtaining the acquisition module 120 of the temperature data of all LED unit process location codings from described first order LED unit.
Fig. 2 is that the structure of the LED control module 10 of a kind of LED supervisory circuit in the utility model preferred embodiment is formed synoptic diagram, and as shown in the figure, this LED control module 10 comprises:
Link to each other with described output module 110 and described acquisition module 120 respectively, be used for controlling the video data and the control signal of described output module 110 outputs according to the temperature data that described acquisition module 120 gets access to through location coding, thus the control module 130 of the power consumption of all LED unit being regulated or partial L ED unit strings is carried out the blank screen processing.
Link to each other with described acquiring unit 120, be used for the described temperature data that described acquiring unit 120 gets access to is sent to the last transmission module 140 of external equipment, wherein said external equipment can be personal host computer, so that user's duty to LED display on PC is monitored, or be sent to other external storage facilitiess and write down storage, so that the staff is further processed and safeguards.
Fig. 3 be in the utility model preferred embodiment in a kind of LED supervisory circuit the structure of control module 130 form synoptic diagram, control module 130 comprises as shown in the figure:
Link to each other with described acquisition module, be used for detecting that described acquisition module gets access to whether surpasses the detection module 131 of predetermined threshold value through the temperature value of the temperature data of location coding;
Link to each other with described output module and described judge module respectively, be used for when detection module 131 detects quantity above the LED unit of the temperature data of predetermined threshold value and satisfies default control stream condition, then controlling the video data of output module output and the power consumption control module 132 that control signal reduces the power consumption of all LED unit in the whole LED unit strings; Concrete described default control stream condition can comprise: described detection module 131 detects quantity above the LED unit of the temperature data of predetermined threshold value and has surpassed alarm numerical value low threshold but surpass alarm numerical value high threshold, or the ratio value compared with the LED element number that the whole LED unit strings is comprised of this quantity has reached alarm ratio value low threshold but surpasses alarm ratio value high threshold.
Link to each other with described output module and described judge module respectively, be used for when detection module detects quantity above the LED unit of the temperature data of predetermined threshold value and satisfies default blank screen condition, then control the video data of output module output and control signal the LED unit that surpasses the encoded radio correspondence in the temperature data of predetermined threshold value or the LED unit of whole LED unit strings are carried out the blank screen control module 133 that blank screen is handled.Concrete described default blank screen condition can comprise: the quantity of LED unit that described detection module 131 is detected to surpass the temperature data of predetermined threshold value surpasses alarm numerical value low threshold; or the ratio value that this quantity is compared with the LED element number that the whole LED unit strings is comprised does not reach alarm ratio value low threshold; then control the video data and the control signal of output module output the LED unit that surpasses the encoded radio correspondence in the temperature data of predetermined threshold value is carried out the blank screen processing; if the quantity of LED unit that described detection module 131 is detected to surpass the temperature data of predetermined threshold value surpasses alarm numerical value high threshold; or the ratio value that this quantity is compared with the LED element number that the whole LED unit strings is comprised surpasses alarm ratio value high threshold; then control the video data of output module output and control signal and the LED unit of whole LED unit strings is carried out blank screen handle, to realize protection the LED unit.
Fig. 4 be in the utility model preferred embodiment in a kind of LED supervisory circuit the structure of LED unit 20 form synoptic diagram, LED unit 20 comprises as shown in the figure:
First connects plug-in unit 201, second connects plug-in unit 202, led circuit 203, scrambler 205 respectively as described above, repeats no more in this;
Described further temperature sensor 204 can comprise:
Link to each other with described led circuit 203, be used to obtain the temperature acquisition module of the temperature data of described led circuit 203;
Link to each other with described temperature acquisition module, when the temperature value that is used for the temperature data that gets access to when described temperature acquisition module surpasses predetermined threshold value, then trigger the overtemperature alarm module of warning circuit 206 luminous warnings.
Link to each other with described temperature sensor, be used for carrying out the warning circuit 206 of luminous warning according to the triggering of described temperature sensor.Concrete, this luminous warning circuit can comprise an emitting led and resistance.
By the foregoing description, the utility model has been realized the protection to constant-current driving in the led circuit and LED lamp by the monitoring to led circuit temperature in the light-emitting diode display, has prolonged the serviceable life of led circuit, also the maintenance of light-emitting diode display is provided convenience simultaneously.
Claims (6)
1. a LED supervisory circuit is characterized in that, comprises the LED unit of a LED control module and a plurality of serial connections, and described LED control module links to each other with an end of described LED unit strings, and wherein said LED unit comprises:
Be used for receiving video data and control signal, and upload first of temperature data to LED control module or upper level LED unit and connect plug-in unit from LED control module or upper level LED unit;
Be used for exporting described video data and control signal, and obtain the second connection plug-in unit of described temperature data from next stage LED unit to next stage LED unit;
Be connected plug-in unit with described first and link to each other, be used for being driven the led circuit of lighting by video data and control signal that the described first connection plug-in unit receives;
Link to each other with described led circuit, be used to obtain the temperature sensor of the temperature data of described led circuit;
Link to each other with described temperature sensor, be used for the temperature data that described temperature sensor gets access to is positioned the scrambler of coding;
Described LED control module comprises:
Be connected plug-in unit with first of first order LED unit and link to each other, be used for exporting the output module of described video data and control signal to described first order LED unit strings;
Be connected plug-in unit with first of first order LED unit and link to each other, be used for obtaining the acquisition module of all LED unit through the temperature data of location coding from described first order LED unit strings.
2. LED supervisory circuit as claimed in claim 1 is characterized in that, described LED control module also comprises:
Link to each other with described output module and described acquisition module respectively, be used for controlling the video data and the control signal of described output module output according to the temperature data that described acquisition module gets access to through location coding, thus the control module of the current value that flows through the LED unit strings being regulated or partial L ED unit strings is carried out the blank screen processing.
3. LED supervisory circuit as claimed in claim 2 is characterized in that, described control module comprises:
Link to each other with described acquisition module, be used for detecting that described acquisition module gets access to whether surpasses the detection module of predetermined threshold value through the temperature value of the temperature data of location coding;
Link to each other with described output module and described judge module respectively, be used for when detection module detects quantity above the LED unit of the temperature data of predetermined threshold value and satisfies default control stream condition, then controlling the video data of output module output and the power consumption control module that control signal reduces the power consumption of all LED unit in the whole LED unit strings;
Link to each other with described output module and described judge module respectively, be used for when detection module detects quantity above the LED unit of the temperature data of predetermined threshold value and satisfies default blank screen condition, then control the video data of output module output and control signal the LED unit that surpasses the encoded radio correspondence in the temperature data of predetermined threshold value or the LED unit of whole LED unit strings are carried out the blank screen control module that blank screen is handled.
4. LED supervisory circuit as claimed in claim 1 is characterized in that, the LED unit also comprises:
Link to each other with described temperature sensor, be used for carrying out the warning circuit of luminous warning according to the triggering of described temperature sensor;
Described temperature sensor comprises:
Link to each other with described led circuit, be used to obtain the temperature acquisition module of the temperature data of described led circuit;
Link to each other with described temperature acquisition module, when the temperature value that is used for the temperature data that gets access to when described temperature acquisition module surpasses predetermined threshold value, then trigger the overtemperature alarm module of the luminous warning of described warning circuit.
5. LED supervisory circuit as claimed in claim 1 is characterized in that, described LED control module also comprises:
Link to each other with described acquiring unit, be used for the described temperature data that described acquiring unit gets access to is sent to the last transmission module of external equipment.
6. as each described LED supervisory circuit among the claim 1-5, it is characterized in that described temperature sensor is any in three kinds of 1 line bus sensors, two-wire bus sensor and the three-way bus sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202608637U CN201556400U (en) | 2009-11-27 | 2009-11-27 | LED monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202608637U CN201556400U (en) | 2009-11-27 | 2009-11-27 | LED monitoring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201556400U true CN201556400U (en) | 2010-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202608637U Expired - Fee Related CN201556400U (en) | 2009-11-27 | 2009-11-27 | LED monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201556400U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208256A (en) * | 2013-04-24 | 2013-07-17 | 无锡市崇安区科技创业服务中心 | Interactive light-emitting diode (LED) display screen control system |
| WO2015043139A1 (en) * | 2013-09-26 | 2015-04-02 | 西安诺瓦电子科技有限公司 | Led lamp panel, control card of led display screen, and led display screen system |
-
2009
- 2009-11-27 CN CN2009202608637U patent/CN201556400U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208256A (en) * | 2013-04-24 | 2013-07-17 | 无锡市崇安区科技创业服务中心 | Interactive light-emitting diode (LED) display screen control system |
| WO2015043139A1 (en) * | 2013-09-26 | 2015-04-02 | 西安诺瓦电子科技有限公司 | Led lamp panel, control card of led display screen, and led display screen system |
| US9953552B2 (en) * | 2013-09-26 | 2018-04-24 | Xi'an Novastar Tech Co., Ltd. | LED display unit board, LED display screen control card and LED display screen system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20121127 |