Addressing circuit and method for obtaining spatial position of each light-emitting module of LED lamp string

Abstract

The invention discloses an addressing circuit and method for obtaining the spatial position of each light-emitting module of an LED lamp string. The addressing circuit and method are easy to operate and can carry out rapid addressing after an LED lamp strip is installed and used. A detection signal unit is made into a standard module for detecting the incidence relation between the address code ofeach LED light-emitting module in an LED lamp strip and the spatial sorting position of the LED light-emitting module in the LED lamp strip, and can enable a client to easily know the spatial position of each LED light-emitting module in the LED lamp strip, so that a main control signal capable of enabling each LED light-emitting module to work in sequence can be easily compiled. According to theLED lamp strip adopting the circuit, the client does not need to search for the association relationship by adopting complex detection means and tools, and the client only needs to write a program according to a protocol of the LED light-emitting module and finish a related addressing task by the detection signal unit. The circuit is simple, practical and convenient, and the operation of addressing the association relationship can be carried out under any condition before and after the LED lamp strip is installed.

Description

technical field [0001] The present invention relates to an LED light strip, in particular to an addressing circuit and an addressing method capable of rapidly obtaining the space sorting positions of each light-emitting module in the LED light strip in the LED light strip. Background technique [0002] In urban lighting projects, LED light strips are widely used. When night falls, these LED light strips are under the control of different signals (hereinafter referred to as colored light signals), flashing different patterns, characters and flowing colors (flowing colors) That is: flowing color bars or ribbons, patterns, text or scenery background), so that the city under the night is more beautiful. [0003] Usually, the LED light strip consists of several groups of LED light-emitting components connected in parallel between the positive and negative terminals of the power supply. The control chip in the component, when making the LED light strip, will have an ID address bu...

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Problems solved by technology

[0009] 4) 5V and 3V are used as logic level identification. The difference between 5V and 3V is 2V. When the line is stretched, the voltage will drop and the voltage is not enough for 5V. At this time, the level difference that the smart chip needs to identify is even smaller (less than 2V), it is easy to misjudge the signal at this time

[0010] 5) When in use, when one or some LED light-emitting modules in the LED light string are damaged and do not emit light, the address code of each LED light-emitting module obtained by the first addressing and the corresponding LED light-emitting module are located in the LED light string The relationship information between the sorting positions is disrupted. When addressing again, the entire LED light string needs to be disassembled and returned to the factory for repair and inspection. The damaged lamp beads need to be tracked and inspected by a video addresser, which increases the difficulty of the operation.

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