An address burning method and system based on LED photoelectric characteristics

Abstract

The application belongs to the technical field of LED, and discloses an address burning method and system based on LED photoelectric characteristics, which comprises the following steps: a control module sends a burning start signal to each LED module; the LED module starts a light detection unit in response to the burning start signal; the control module sends an irradiation instruction to an external light source module; the external light source module irradiates the first LED module of a parallel lamp string at a preset brightness in response to the irradiation instruction; the control module sends an address burning instruction to each LED module of the parallel lamp string at a preset period; the LED module judges whether the detection signal of the light detection unit reaches a preset threshold in response to the address burning instruction; if yes, address burning is performed according to the address burning instruction, and the display unit is controlled to light up at a preset brightness after burning is completed. The application can reduce the interference degree of the external environment, reduce the address code error condition, and realize efficient address burning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED, in particular to an address burning method and system based on photoelectric characteristics of LED. BACKGROUND

[0002] Parallel LED networking will not be affected by the damage of some LED lamps, and the normal work of other LED lamps is affected, and is widely used in LED products, but parallel networking must be programmed with unique address for each LED lamp to achieve individual control of each LED lamp. There are currently two ways to program LED: 1) burn each LED lamp separately, and then install it on the display panel or lamp strip, which is low in efficiency; 2) system burning, that is, after the production of the lamp strip or LED panel, the system address is burned. A current system burning method uses the photoelectric characteristics of the PN junction of a light-emitting diode. The address is converted into an optical signal by a burning controller and transmitted to the LED lamp. The LED lamp converts the optical signal into an electrical signal to realize address burning.

[0003] Then, the optical signal is extremely unstable compared with the electrical signal, and is very easy to be disturbed in the transmission process, resulting in address code error; in addition, relying on optical signal transmission of address code needs to move the controller for generating coding light signal or the coded lamp strip or LED panel constantly, which is low in burning efficiency when facing products with a large number of LED lamps such as LED large screens. SUMMARY

[0004] The present application provides an address burning method and system based on photoelectric characteristics of LED, which can reduce the influence of external environment, reduce address code error, and realize efficient address burning.

[0005] In a first aspect, the present application provides an address burning method based on photoelectric characteristics of LED, comprising:

[0006] The control module sends a burning start signal to each LED module of the parallel lamp string;

[0007] The LED module turns on the light detection unit in response to the burning start signal;

[0008] The control module sends an irradiation instruction to the external light source module;

[0009] The external light source module irradiates the first LED module of the parallel lamp string at a preset brightness in response to the irradiation instruction;

[0010] The control module sends an address burning instruction to each LED module of the parallel lamp string at a preset period;

[0011] The LED module judges whether the detection signal of the light detection unit reaches a preset threshold value in response to the address burning instruction; if yes, the address burning is performed according to the address burning instruction, and the display unit is lit up at a preset brightness after the burning is completed.

[0012] Further, the method further comprises:

[0013] The LED module judges whether the display unit is in a lit state if the detection signal of the light detection unit does not reach the preset threshold value in response to the address burning instruction; if yes, the display unit is turned off.

[0014] Further, the method further comprises:

[0015] The LED module judges whether there is an address code in the address unit in response to the address burning instruction.

[0016] If yes, the LED module judges whether a difference between the address code in the address burning instruction and the address code burned in the address unit is greater than a preset difference; if yes, the display unit is turned off; if no, the display unit is kept lit up at the preset brightness.

[0017] If no, the LED module judges whether the detection signal of the light detection unit reaches the preset threshold value.

[0018] Further, the method further comprises:

[0019] The control module sends a closing instruction to the external light source module after a preset time length after the irradiation instruction is sent.

[0020] The external light source module responds to the closing instruction and performs an extinguishing operation.

[0021] Further, the method further comprises:

[0022] The control module sends a reset instruction to each LED module of the parallel light string.

[0023] The LED module turns off the light detection unit in response to the reset instruction.

[0024] Further, the distance between the external light source module and the first LED module is equal to the distance between two adjacent LED modules in the parallel light string.

[0025] In a second aspect, an address burning system based on LED photoelectric characteristics is provided, comprising a parallel light string, a control module and an external light source module; the parallel light string comprises a plurality of parallel LED modules;

[0026] The control module is connected with the first LED module of the parallel light string.

[0027] The control module is configured to send a burning start signal to each LED module of the parallel lamp string, send an irradiation instruction to the external light source module, and send an address burning instruction to each LED module of the parallel lamp string at a preset period;

[0028] The external light source module is configured to irradiate the first LED module of the parallel lamp string at a preset brightness in response to the irradiation instruction.

[0029] The LED module is configured to turn on the light detection unit in response to the burning start signal, determine whether the detection signal of the light detection unit reaches a preset threshold in response to the address burning instruction, perform address burning according to the address burning instruction if the detection signal reaches the preset threshold, and control the display unit to light up at a preset brightness after the burning is completed.

[0030] Further, the LED module is also configured to determine whether the display unit is in a light-up state if the detection signal of the light detection unit does not reach the preset threshold in response to the address burning instruction, and turn off the display unit if the display unit is in the light-up state.

[0031] Further, the control module is also configured to send a closing instruction to the external light source module after a preset time length after the irradiation instruction is sent.

[0032] The external light source module is also configured to perform an extinguishing operation in response to the closing instruction.

[0033] Further, the control module is also configured to send a reset instruction to each LED module of the parallel lamp string.

[0034] The LED module is also configured to turn off the light detection unit in response to the reset instruction.

[0035] In summary, compared with the prior art, the technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0036] The address burning method based on the photoelectric characteristics of the LED provided by the embodiments of the present application first causes each LED module in the parallel lamp string to receive the burning start signal and the address burning instruction, but only the LED module performs the address burning operation according to the received address burning instruction after receiving the light signal that meets the preset threshold, thereby realizing light signal enabling and electrical signal burning. The light signal enabling only needs to ensure that the brightness of the light signal can cause the light detection unit to generate a detection signal greater than or equal to the preset threshold, and the influence of interference is small, while the electrical signal, i.e., the address burning instruction transmission, relies on a wire and has strong anti-interference ability, thereby greatly reducing the address code error condition. The present application causes the LED module to light up after the burning is completed, uses its own light as the enabling light source for enabling the next LED module to perform address burning, causes the external light source module to only need to irradiate the first LED module, and causes the external light source module and the parallel lamp string to both not need to be moved, thereby realizing efficient address burning. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 A flow chart of an address burning method based on LED photoelectric characteristics is provided for an exemplary embodiment of the present application.

[0038] Figure 2 An internal structure diagram of an LED module is provided for an exemplary embodiment of the present application.

[0039] Figure 3 A structure diagram of an address burning system based on LED photoelectric characteristics is provided for an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0041] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0042] Referring to Figure 1 , the present application provides an address burning method based on LED photoelectric characteristics, comprising:

[0043] Step S11, the control module sends a burning start signal to each LED module of the parallel lamp string.

[0044] Step S12, the LED module turns on the light detection unit in response to the burning start signal.

[0045] First of all, it should be noted that the LED photoelectric characteristics, i.e. the photoelectric characteristics of light emitting diode, refer to the characteristics of light emitting diode in addition to the characteristics of electric current lighting. The light emitting diode is essentially a semiconductor diode with a PN junction, so under the irradiation of external strong light, a voltage characteristic will be generated at both ends of the PN junction, thereby realizing the function of converting external light signals into electrical signals.

[0046] Referring to Figure 2 , Figure 2 The internal structure of the LED module of the present application is shown in the figure, wherein the control logic of the LED module is located in the data receiving and processing unit, and the light detection unit, i.e. the PN junction, is used to sense the received light signal to generate a detection signal. It should be noted that the working content and control logic of the units in the LED module which are not specially mentioned in the present application are not changed.

[0047] Step S13, the control module sends an irradiation instruction to the external light source module.

[0048] Step S14, the external light source module irradiates the first LED module of the parallel lamp string with preset brightness in response to the irradiation instruction.

[0049] Step S15, the control module sends address programming instructions to each LED module of the parallel lamp string with preset period.

[0050] The address code in the address programming instruction sent in each period is increased by 1 based on the address code in the address programming instruction sent in the previous period.

[0051] Step S16, the LED module responds to the address programming instruction to determine whether the detection signal of the light detection unit reaches the preset threshold; if yes, the address programming is performed according to the address programming instruction, and after the programming is completed, the display unit is controlled to be lit up with preset brightness.

[0052] Specifically, the distance between the external light source module and the first LED module is equal to the distance between two adjacent LED modules in the parallel lamp string, and the preset brightness is determined by the following standard: after the loss of the target transmission distance, the light signal can generate a detection signal with a voltage greater than or equal to the preset threshold at the PN junction, i.e., the light detection unit, but after the loss of two target transmission distances, the voltage of the detection signal generated at the PN junction is less than the preset threshold, thereby ensuring that whether the external light source module or the LED module is lit up with preset brightness, only the nearest LED module is enabled to perform address programming; the target transmission distance is the distance between the external light source module and the first LED module or the distance between two adjacent LED modules in the parallel lamp string.

[0053] It can be understood that the present application does not use light signals to transmit address programming instructions, but uses the photoelectric properties of diodes to generate an enable signal (i.e., a detection signal) only by light signals, and all address programming instructions are transmitted through a parallel bus. Compared with the prior art of transmitting address programming instructions by light signals, the present application does not need to develop a set of electro-optical control protocol separately, and does not need to consider the reliability of electro-optical communication conversion transmission. At the same time, in order to reduce the shortcomings of complex programmer control, high cost, high moving precision requirement, slow movement (once close to seconds of time) caused by the movement of external light signals, the present application only needs the first LED to need an external light source, and the second and subsequent LEDs rely on the light source of the previous LED as a programming enable signal, thereby achieving simple and efficient rapid programming.

[0054] The address burning method based on the photoelectric characteristics of the LED provided in the above embodiment first, each LED module in the parallel lamp string receives the burning start signal and the address burning instruction, but only the LED module receives the light signal meeting the preset threshold value, and then the address burning operation is performed according to the received address burning instruction, so as to realize the light signal enablement and the electrical signal burning. The light signal enablement only needs to ensure that the brightness of the light signal can make the light detection unit generate a detection signal greater than or equal to the preset threshold value, and the influence of interference is small, and the electrical signal, that is, the address burning instruction transmission relies on the wire, and the anti-interference ability is strong, so as to greatly reduce the address code error condition. The LED module is lit after the burning is completed, the light of the LED module is used as the enabling light source for enabling the address burning of the next LED module, so that the external light source module only needs to irradiate the first LED module, and the external light source module and the parallel lamp string do not need to be moved, and the efficient burning of the address is realized.

[0055] In some embodiments, the method further comprises:

[0056] Step S161, the LED module responds to the address burning instruction, judges whether the detection signal of the light detection unit reaches the preset threshold value; if not, judges whether the display unit is in the lighting state; if yes, closes the display unit.

[0057] Specifically, each LED module will close the display unit after enabling the next LED module, and will not be lit any more, so as to reduce the power consumption of the parallel lamp string during burning.

[0058] In some embodiments, the method further comprises:

[0059] Step S261, the LED module responds to the address burning instruction, judges whether there is an address code in the address unit.

[0060] Step S262, if yes, judges whether the difference between the address code in the address burning instruction and the address code burned in the address unit is greater than the preset difference; if yes, closes the display unit; if not, keeps the display unit lit at the preset brightness.

[0061] Step S263, if not, judges whether the detection signal of the light detection unit reaches the preset threshold value.

[0062] The subsequent steps of step S263 are consistent with step S16, and if the LED module judges that the detection signal of the light detection unit does not reach the preset threshold value, the received address burning instruction is ignored.

[0063] Specifically, in the foregoing embodiment, the LED module turns off its display unit when the next LED module performs programming, but in order to avoid the delay of the internal judgment logic of the LED module, that is, when the next LED module receives the address programming instruction and has not yet performed the detection signal judgment of the light detection unit, the previous LED module has already been turned off, the embodiment makes the display unit of the LED module turn off after several preset periods, and the specific waiting time is the product of the preset difference and the preset period; after all, the limitation of the preset brightness ensures that even if the display unit of the LED module is turned on, the next LED module will not be enabled; in addition, making the LED module bright for a period of time can also facilitate workers to screen out problematic modules for processing during programming; because in the actual production process, the preset period is often in milliseconds, and it is difficult for the naked eye to observe whether the LED module is lit, and the delay of the lighting time can easily screen out the LED module that does not light.

[0064] In some embodiments, the method further comprises:

[0065] Step S31, the control module sends a closing instruction to the external light source module after a preset time after sending the irradiation instruction.

[0066] It is worth noting that the closing instruction must be sent after the first address programming instruction is sent.

[0067] Step S32, the external light source module responds to the closing instruction and performs the extinguishing operation.

[0068] Similarly, because the external light source module only enables the first LED module, it can be turned off after a preset time (for example, about 2 milliseconds) after the enabling is completed, so as to save power consumption.

[0069] In some embodiments, the method further comprises:

[0070] Step S41, the control module sends a reset instruction to each LED module of the parallel light string.

[0071] Step S42, the LED module responds to the reset instruction and turns off the light detection unit.

[0072] Specifically, the reset instruction, which is a sign of the end of programming, can be sent by manually operating the control module, or the control module can record the address code of the address programming instruction and send the reset instruction after increasing to a certain threshold.

[0073] After the LED module turns off the light detection unit, it returns to the normal light-emitting PWM control of the light-emitting diode.

[0074] See Figure 3Another embodiment of the present application provides an address burning system based on LED photoelectric characteristics, comprising a parallel light string, a control module and an external light source module; the parallel light string comprises a plurality of parallel LED modules.

[0075] The control module is connected with the first LED module of the parallel light string.

[0076] The control module is configured to send a burning start signal to each LED module of the parallel light string, send an irradiation instruction to the external light source module, and send an address burning instruction to each LED module of the parallel light string at a preset period.

[0077] The external light source module is configured to irradiate the first LED module of the parallel light string at a preset brightness in response to the irradiation instruction.

[0078] The LED module is configured to turn on a light detection unit in response to the burning start signal, determine whether a detection signal of the light detection unit reaches a preset threshold in response to the address burning instruction, perform address burning according to the address burning instruction if yes, and control a display unit to light up at a preset brightness after burning is completed.

[0079] Further, the LED module is also configured to determine whether the display unit is in a lighted state if no, and turn off the display unit if yes.

[0080] Further, the control module is also configured to send a closing instruction to the external light source module after a preset time period after the irradiation instruction is sent.

[0081] The external light source module is also configured to perform an extinguishing operation in response to the closing instruction.

[0082] Further, the control module is also configured to send a reset instruction to each LED module of the parallel light string.

[0083] The LED module is also configured to turn off the light detection unit in response to the reset instruction.

[0084] The technical features of the above embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application.

[0085] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that, for those skilled in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An address programming method based on the photoelectric characteristics of LEDs, characterized in that, include: The control module sends a programming start signal to each LED module in the parallel light string; The LED module responds to the programming start signal and turns on the light detection unit; The control module sends an illumination command to the external light source module; The external light source module responds to the illumination command and illuminates the first LED module of the parallel light string at a preset brightness; The control module sends address programming instructions to each LED module of the parallel light string at a preset period. The LED module responds to the address programming command and determines whether the detection signal of the photodetector unit has reached a preset threshold. If so, the address is programmed according to the address programming instruction. After programming is completed, the display unit of the LED module is lit up with a preset brightness control.

2. The address programming method based on LED photoelectric characteristics according to claim 1, characterized in that, Also includes: The LED module responds to the address programming command and determines whether the detection signal of the photodetector unit has reached a preset threshold. If not, determine whether the display unit is in the lit state; If so, then the display unit is turned off.

3. The address programming method based on LED photoelectric characteristics according to claim 1, characterized in that, Also includes: The LED module responds to the address programming instruction and determines whether an address code exists in the address unit; If yes, then determine whether the difference between the address code in the address burning instruction and the address code burned in the address unit is greater than a preset difference; if yes, then turn off the display unit; if no, then keep the display unit lit at a preset brightness. If not, then determine whether the detection signal of the optical detection unit has reached the preset threshold.

4. The address programming method based on LED photoelectric characteristics according to claim 1, characterized in that, Also includes: After sending the irradiation command, the control module presets a time interval and then sends a shutdown command to the external light source module. The external light source module responds to the shutdown command and performs an extinguishing operation.

5. The address programming method based on LED photoelectric characteristics according to claim 1, characterized in that, Also includes: The control module sends a reset command to each LED module in the parallel light string; The LED module responds to the reset command and shuts down the light detection unit.

6. The address programming method based on LED photoelectric characteristics according to claim 1, characterized in that, The distance between the external light source module and the first LED module is equal to the distance between two adjacent LED modules in the parallel light string.

7. An address programming system based on the photoelectric characteristics of LEDs, characterized in that, It includes a parallel light string, a control module, and an external light source module; the parallel light string includes multiple LED modules connected in parallel; The control module is connected to the first LED module of the parallel light string; The control module is used to send a programming start signal to each LED module in the parallel light string; send an illumination command to the external light source module; and send an address programming command to each LED module in the parallel light string at a preset period. The external light source module is used to respond to the illumination command and illuminate the first LED module of the parallel light string at a preset brightness; The LED module is used to respond to the programming start signal to turn on the light detection unit; and to respond to the address programming command to determine whether the detection signal of the light detection unit has reached a preset threshold. If so, the address is programmed according to the address programming instruction. After programming is completed, the display unit of the LED module is lit up with a preset brightness control.

8. The address programming system based on LED photoelectric characteristics according to claim 7, characterized in that, The LED module is also used to respond to the address programming command and determine whether the detection signal of the light detection unit has reached a preset threshold; if not, it determines whether the display unit is in the lit state; if so, it turns off the display unit.

9. The address programming system based on LED photoelectric characteristics according to claim 7, characterized in that, The control module is also used to send a shutdown command to the external light source module after a preset time following the sending of the irradiation command; The external light source module is also used to respond to the shutdown command and perform an extinguishing operation.

10. The address programming system based on LED photoelectric characteristics according to claim 7, characterized in that, The control module is also used to send reset commands to each LED module in the parallel light string; The LED module is also used to respond to the reset command and turn off the light detection unit.

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