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LED dot matrix two-dimensional code generation method and generation module
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A technology for generating modules and two-dimensional codes, which is applied in the direction of instruments, identification devices, static indicators, etc., can solve the problems of low work efficiency and heavy workload of management personnel, so as to reduce workload, reduce error rate, and improve work efficiency Effect
Active Publication Date: 2018-01-30
INFORMATION & COMM COMPANY OF STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY +1
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[0004] The purpose of the present invention is to solve the problem that when the power system adopts two-dimensional code management equipment, it is necessary to frequently replace the paper two-dimensional code label, which leads to the problem of heavy workload and low work efficiency of the management personnel, and provides a kind of LED dot matrix two-dimensional code generation Methods and Generated Modules
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specific Embodiment approach 1
[0021] Specific implementation mode one: combine figure 1 with figure 2 Describe this embodiment, the LED dot matrix two-dimensional code generation method described in this embodiment includes the following steps:
[0022] Two-dimensional code generation step: for generating a rectangular two-dimensional code according to the device information input by the user, the device information including the location information, brand, model and performance parameters of the device, and performing the image segmentation step after this step;
[0023] Image segmentation step: Divide the generated two-dimensional code image into a grid of N rows×M columns, N is the number of LEDs contained in each column of the rectangular LED dot matrix, and M is the number of LEDs contained in each row of the LED dot matrix quantity, and perform the gray value extraction step after this step ends;
[0024] Gray value extraction step: extract the gray value of the image in each grid, and generate a...
specific Embodiment approach 2
[0030] Specific Embodiment 2: This embodiment is a further limitation of the LED dot matrix two-dimensional code generation method described in Embodiment 1. In this embodiment, M=N.
[0031] The two-dimensional codes generated by conventional two-dimensional code generation methods are all square, and using this type of two-dimensional code generator can more easily realize the LED dot matrix two-dimensional code generation method described in this embodiment.
specific Embodiment approach 3
[0032] Specific Embodiment 3: This embodiment is a further limitation of the LED dot matrix two-dimensional code generation method described in Embodiment 1. In this embodiment, when the command in the LED dot matrix control step is 0, the terminal of the corresponding LED The voltage is lower than the turn-on voltage of the LED; when the command is 1, the terminal voltage of the corresponding LED is higher than the turn-on voltage of the LED.
[0033] Compared with controlling the on or off of the LED power supply, the method of controlling the voltage value at both ends of the LED can improve the life of the LED.
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Abstract
The invention relates to a technique of displaying two-dimensional codes by using LED lattices, in particular to an LED lattice QR two-dimensional code generating method and module. A rectangular two-dimensional code is generated first according to device information that a user inputs, a two-dimensional code image generated is then divided into a grid of N rows and M columns, a gray value of an image in each cell is extracted, a command matrix is generated according to the gray values, one gray value greater than 200 corresponds to a command 1, one gray value less than 50 corresponds to a command 0, an LED lattice corresponding to positional information is finally controlled according to the command matrixes, and elements in the command matrixes are in one-to-one correspondence with LEDs in the LED lattice; one command being 0 corresponds to one LED being on; one command being 1 corresponds to one LED being off. The frequent replacing of paper two-dimensional code labels can be avoided, workload of administrative staff can be reduced, work efficiency can be improved, error rate can be reduced, and the invention is applicable to the device management for power systems, especially for the management of servers.
Description
technical field [0001] The invention relates to a technology for displaying a two-dimensional code by using an LED dot matrix. Background technique [0002] There are a large number of various devices in the power system, and it is necessary to frequently search for device information, such as brand, model, and performance parameters, etc. during daily management and maintenance. At present, the method of finding device information is still at the stage of manual search. Taking the server as an example, after the staff enters the computer room and finds that a certain server in a certain cabinet is abnormal, they need to record the computer room number and the cabinet number where the server is located. And the location number in the cabinet, and then use the location information to find server information in the corresponding software or electronic documents. This original way of searching for information takes a long time and requires operators to record a lot of informat...
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Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/33G09G3/32
CPCG09F9/33G09G3/32
Inventor 赵威
Owner INFORMATION & COMM COMPANY OF STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY
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