CN211858098U - Analog load and intelligent debugging system for liquid crystal driving mainboard - Google Patents
Analog load and intelligent debugging system for liquid crystal driving mainboard Download PDFInfo
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- CN211858098U CN211858098U CN202020712892.9U CN202020712892U CN211858098U CN 211858098 U CN211858098 U CN 211858098U CN 202020712892 U CN202020712892 U CN 202020712892U CN 211858098 U CN211858098 U CN 211858098U
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Abstract
The utility model provides a simulated load and intelligent debugging system for liquid crystal drive mainboard, this simulated load include the fastener and a plurality of luminous modules that N is arranged in M array, the common input termination liquid crystal drive mainboard of a plurality of luminous modules, the fastener is used for locating preset position according to the received debugging signal, and with one of them luminous module electric connection, make preset position constitute the conducting loop with common input and liquid crystal drive mainboard between, for debugging; wherein N and M are both positive integers. From this through locating different positions with the fastener for thereby predetermine the position and different effect that realize the different loads of the circuit that switches on that constitutes between common input and the liquid crystal drive mainboard, this mode is simple and easy, need not to use the lamp strip of various different technical parameters, has saved manpower and materials, has solved current TV set mainboard test technique and has had the lamp strip that needs to use various different technical parameters, causes the problem of a large amount of material losses.
Description
Technical Field
The utility model belongs to the technical field of electronic circuit, especially, relate to a simulation load and intelligent debugging system for liquid crystal drive mainboard.
Background
In order to complete the development work of the LED television main board, a complete television platform is required under normal conditions, and components such as liquid crystal glass, backlight LED light bars and the like are required besides the main board. In fact, for different television models, specification parameters of backlight LED lamps are completely inconsistent, and are mainly reflected in the difference between the voltage and the current of the LED light bar. When developing the trinity mainboard of general TV, must consider the compatibility to the LED lamp strip of different parameters.
In order to test the compatibility of the main board with different light bars, the simplest way is to prepare light bars with different technical parameters, but this causes a great deal of material loss. Another way is to use an electronic load, but the operation of the electronic load needs to establish a loop, and the transient response of the electronic load is not good, and the characteristics of the electronic load cannot be equivalent to the actual LED load for some switching operations.
Therefore, the existing television mainboard testing technology has the problem that a large amount of material is lost due to the fact that lamp strips with various technical parameters need to be used.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dummy load and intelligent debugging system for liquid crystal drive mainboard aims at solving current TV set mainboard test technique and has the lamp strip that needs to use various different technical parameter, causes the problem of a large amount of material losses.
The utility model discloses a first aspect provides an analog load for liquid crystal drive mainboard, include:
the wire clamp and the plurality of light emitting modules are arranged in the N x M array;
the common input end of the plurality of light-emitting modules is connected with the liquid crystal driving main board, and the wire clamp is arranged at a preset position according to a received debugging signal and is electrically connected with one of the light-emitting modules, so that a conducting loop is formed among the preset position, the common input end and the liquid crystal driving main board for debugging; wherein N and M are both positive integers.
Preferably, the method further comprises the following steps:
and the control circuit is connected with the wire clamp, is configured to convert an operation instruction of a user into the debugging signal and output the debugging signal to the wire clamp.
Preferably, the control circuit is realized by adopting a single chip microcomputer.
Preferably, the light emitting module comprises a light emitting diode.
Preferably, if N is equal to 1, the light emitting modules are connected in series one by one, and physical parameters of each light emitting module are consistent.
Preferably, N is greater than 1 and M is greater than 1, and a plurality of output ends of the plurality of light emitting modules are suspended.
Preferably, the clamp comprises at least one pinch clamp and at least one pinch clamp,
each of the current dividing clips is configured to limit current flowing through the conductive loop, and each of the voltage dividing clips is configured to limit voltage between the preset position and the common input terminal.
The utility model discloses the second aspect provides an intelligent debugging system, a serial communication port, including the liquid crystal drive mainboard, still include as above-mentioned analog load.
Preferably, the method further comprises the following steps:
a backlight LED light bar;
the backlight LED lamp bar is connected with the liquid crystal driving main board and the analog load, and is configured to receive a power supply signal output by the liquid crystal driving main board and to illuminate when the analog load is debugged.
Preferably, the backlight LED light bar includes a plurality of LED lights connected in series.
The utility model provides a pair of a simulated load and intelligent debugging system for liquid crystal drive mainboard, this simulated load include the fastener and a plurality of luminous modules that N × M array was arranged, the common input termination liquid crystal drive mainboard of a plurality of luminous modules, the fastener is used for locating preset position according to the debugging signal received, and with one of them luminous module electric connection, make preset position constitute the conducting loop with common input and liquid crystal drive mainboard between, for debugging; wherein N and M are both positive integers. From this through locating different positions with the fastener for thereby predetermine the position and different effect that realize the different loads of the circuit that switches on that constitutes between common input and the liquid crystal drive mainboard, this mode is simple and easy, need not to use the lamp strip of various different technical parameters, has saved manpower and materials, has solved current TV set mainboard test technique and has had the lamp strip that needs to use various different technical parameters, causes the problem of a large amount of material losses.
Drawings
Fig. 1 is a schematic diagram of a module structure of a simulation load of a liquid crystal driving motherboard.
Fig. 2 is an electrical schematic diagram of a simulation load of the liquid crystal driving motherboard according to an embodiment of the present invention.
Fig. 3 is an electrical schematic diagram of a simulated load of a liquid crystal driving motherboard according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The analog load comprises a wire clamp and a plurality of light-emitting modules arranged in an N x M array, wherein a common input end of the plurality of light-emitting modules is connected with the liquid crystal driving mainboard, the wire clamp is used for being arranged at a preset position according to a received debugging signal and electrically connected with one of the light-emitting modules, so that a conduction loop is formed between the preset position and the common input end as well as between the preset position and the liquid crystal driving mainboard for debugging; wherein N and M are both positive integers. From this through locating different positions with the fastener for thereby predetermine the effect that different loads were realized simulating to the conduction return circuit that constitutes between position and common input and the liquid crystal drive mainboard, this mode is simple and easy, need not to use the lamp strip of various different technical parameter, has saved manpower and materials. The analog load is applied to the field of LED televisions and is mainly used as a debugging tool in the development period.
Fig. 1 shows a module structure of an analog load of a liquid crystal driving motherboard according to the present invention, and for convenience of description, only the parts related to the present embodiment are shown, and detailed descriptions are as follows:
the above-mentioned analog load for the liquid crystal driving main board 101 includes a plurality of light emitting modules 102 arranged in an N × M array and a clip 103.
The common input end of the plurality of light-emitting modules 102 is connected with the liquid crystal driving main board 101, and the wire clamp 103 is arranged at a preset position according to a received debugging signal and is electrically connected with one of the light-emitting modules 102, so that a conduction loop is formed between the preset position and the common input end as well as the liquid crystal driving main board 101 for debugging; wherein N and M are both positive integers.
It should be understood that, due to the light emitting modules 102 arranged in an array and the wire clamps 103 being set at predetermined positions according to the debugging signal, different conducting loops are formed to simulate loads with different voltages. This mode is simple and easy, need not to use the lamp strip of various different technical parameter, has saved manpower and materials.
Wherein the debug signal comprises a debug voltage and a debug current.
As an embodiment of the utility model, above-mentioned fastener 103 accessible is artifical to be set up, also can carry out intelligence setting through control circuit.
As an embodiment of the present invention, the above-mentioned analog load further includes a control circuit (not shown in fig. 1), and the control circuit is connected to the wire clamp 103, and is configured to convert the operation instruction of the user into a debugging signal, and output the debugging signal to the wire clamp 103.
It should be understood that when the load of how many volts needs to be debugged, the operation instruction (including the manner of a key signal or a touch signal) is sent to the control circuit, so that the control circuit converts the received operation instruction into a debugging signal.
Illustratively, the control circuit is realized by a single chip microcomputer; of course, the type of the single chip is not limited as long as the single chip can perform the functions of the present embodiment.
Fig. 2 shows an electrical structure of an analog load for a liquid crystal driving motherboard according to an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment are shown, which are detailed as follows:
as an embodiment of the present invention, the light emitting module 102 includes a light emitting diode, and of course, a common fast recovery diode may be used.
As an embodiment of the present invention, when N is equal to 1, a plurality of light emitting modules are connected in series one by one, and the physical parameters of each light emitting module are uniform.
Illustratively, when N is equal to 1, the leds are used to form an array of diodes. The actual voltage parameters of different types of lamp bars are about 9V at the lowest and about 200V at the highest, and the current ranges from about 100mA to 1000 mA. Because the voltage drop of a single light emitting diode is about 1V, 200 light emitting diodes can be selected to be connected in series to form an analog load in actual manufacturing.
The concrete mode is as follows: the LEDs + and LEDs-in fig. 2 are connected to the LEDs + and LEDs-output of the liquid crystal driving main board 101, and the clip 103 selects which position to clip on according to the voltage requirement of the actual LED light bar. Because the voltage drop of the selected light emitting diode is 1V, the voltage of the LED light bar with more or less volts is selected behind the first light emitting diode.
The design is simple, and the debugging requirements of the LED television mainboard in testing on various loads can be well met.
Fig. 3 shows an electrical structure of an analog load for a liquid crystal driving motherboard according to another embodiment of the present invention, and for convenience of description, only the parts related to this embodiment are shown, which are detailed as follows:
as an embodiment of the present invention, the above N is greater than 1 and M is greater than 1, and a plurality of outputs of the plurality of light emitting modules 102 are suspended.
As an embodiment of the present invention, the wire clamp 103 includes at least one shunt clamp 1031 and at least one bleeder clamp 1032;
each shunt clamp 1031 is configured to limit current flowing through the conductive loop, and each voltage divider clamp 1032 is configured to limit voltage between the preset position and the common input.
The utility model also provides an intelligent debugging system, including liquid crystal drive mainboard 101, still include as above-mentioned analog load.
It should be noted that the liquid crystal driving motherboard 101 is added to the above analog load, so that the functional description and the principle description of the wire clips 103 and the plurality of light emitting modules 102 arranged in an N × M array in the analog load can refer to the embodiments of fig. 1 to 3, and details are not repeated herein.
As an embodiment of the present invention, the above-mentioned intelligent debugging system further includes a backlight LED light bar 104;
the backlight LED light bar 104 is connected to the liquid crystal driving main board 101 and the analog load, and configured to receive a power signal output by the liquid crystal driving main board 101 and illuminate when the analog load is debugged.
Specifically, the backlight LED light bar 104 includes a plurality of LED lights (indicated by LED1, LED2, and LED3 … … LEDn in fig. 3) connected in series.
The working principle of the analog load and intelligent debugging system for the liquid crystal driving main board is described below with reference to fig. 3:
in the cooperation screen of trinity TV mainboard, LED lamp strip use voltage and electric current are all than littleer lamp strip. The purpose of the analog load is to share excess voltage and current. For example: when the voltage output by the three-in-one television mainboard is 60V/600mA, the specification of the backlight LED lamp strip 104 used by the display screen is 40V/200mA, redundant 400mA current is generated, and redundant 20V voltage needs to be consumed through an analog load. The analog load is provided with 4 strings of light emitting diodes, two voltage division clamps 1032 are adopted to clamp the position of the 60 th diode of the two strings of light emitting diodes respectively, and the 60 diodes represent the voltage of 60V. A voltage divider 1032 is used to clamp the 20 th LED of the other LED string to represent the 20V absorbed voltage. Two strings of light emitting diodes are conducted through the shunt clamp 1031, one string of diodes is conducted with the backlight LED light bar 104 through the shunt clamp 1032, and the backlight LED light bar 104 only occupies one third of the whole current, namely 200 mA.
The mode well adopts the simulation load to share redundant voltage and current, can ensure normal display of a screen, has completely correct time sequence, completely meets the requirement of dynamic response, and meets the requirement of testing.
To sum up, the embodiment of the present invention provides a dummy load and intelligent debugging system for a liquid crystal driving motherboard, the dummy load includes a plurality of light emitting modules arranged in a N × M array and a wire clamp, a common input end of the plurality of light emitting modules is connected to the liquid crystal driving motherboard, the wire clamp is used for locating a preset position according to a received debugging signal, and is electrically connected to one of the light emitting modules, so that a conduction loop is formed between the preset position and the common input end as well as between the preset position and the liquid crystal driving motherboard for debugging; wherein N and M are both positive integers. From this through locating different positions with the fastener for thereby predetermine the position and different effect that realize the different loads of the circuit that switches on that constitutes between common input and the liquid crystal drive mainboard, this mode is simple and easy, need not to use the lamp strip of various different technical parameters, has saved manpower and materials, has solved current TV set mainboard test technique and has had the lamp strip that needs to use various different technical parameters, causes the problem of a large amount of material losses.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An analog load for a liquid crystal driving main board, comprising:
the wire clamp and the plurality of light emitting modules are arranged in the N x M array;
the common input end of the plurality of light-emitting modules is connected with the liquid crystal driving main board, and the wire clamp is arranged at a preset position according to a received debugging signal and is electrically connected with one of the light-emitting modules, so that a conducting loop is formed among the preset position, the common input end and the liquid crystal driving main board for debugging; wherein N and M are both positive integers.
2. The analog load of claim 1, further comprising:
and the control circuit is connected with the wire clamp, is configured to convert an operation instruction of a user into the debugging signal and output the debugging signal to the wire clamp.
3. The analog load of claim 2, wherein the control circuit is implemented using a single-chip microcomputer.
4. The analog load of claim 1, wherein the light module comprises a light emitting diode.
5. The analog load of claim 1, wherein if N is equal to 1, the plurality of light emitting modules are connected in series one by one, and physical parameters of each of the light emitting modules are consistent.
6. The analog load of claim 1, wherein N is greater than 1 and M is greater than 1, and wherein a plurality of outputs of a plurality of the light emitting modules are floating.
7. The analog load of claim 6, wherein the clip comprises at least one shunt clip and at least one bleeder clip,
each of the current dividing clips is configured to limit current flowing through the conductive loop, and each of the voltage dividing clips is configured to limit voltage between the preset position and the common input terminal.
8. An intelligent debugging system, comprising a liquid crystal driving main board, and further comprising an analog load according to any one of claims 1 to 7.
9. The intelligent debugging system of claim 8 further comprising:
a backlight LED light bar;
the backlight LED lamp bar is connected with the liquid crystal driving main board and the analog load, and is configured to receive a power supply signal output by the liquid crystal driving main board and to illuminate when the analog load is debugged.
10. The intelligent debugging system of claim 9 wherein the backlight LED light bar comprises a plurality of LED lights connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020712892.9U CN211858098U (en) | 2020-04-30 | 2020-04-30 | Analog load and intelligent debugging system for liquid crystal driving mainboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020712892.9U CN211858098U (en) | 2020-04-30 | 2020-04-30 | Analog load and intelligent debugging system for liquid crystal driving mainboard |
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| CN211858098U true CN211858098U (en) | 2020-11-03 |
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| CN202020712892.9U Active CN211858098U (en) | 2020-04-30 | 2020-04-30 | Analog load and intelligent debugging system for liquid crystal driving mainboard |
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