2results about How to "Save cycle" patented technology

This invention relates to the field of LED display technology, and more particularly to an LED module, wherein at least two driving components and the main circuit to which these at least two driving components belong constitute a driving module; there are more than one driving module on the back of the circuit board; within each driving module, the input terminal of the first driving component is connected to the main circuit, and the first driving component to the last driving component are connected in series to achieve data signal conduction; the main circuit receives data signals on the back of the circuit board; within each driving module, a serial data jumper component is provided on the serial data connection line between any two adjacent driving components; the serial data jumper component enables unfaulty / uncut driving components to connect with other driving components / main circuits within the driving module. Its advantages are that after cutting the circuit board, there is no need to change the circuit design, saving the production cycle of multi-form LED displays and repetitive design.

The invention discloses a hydrogen fuel cell system life prediction system which comprises the following steps: a model construction module constructs an electric pile life prediction empirical model based on historical durability data of a hydrogen fuel cell system and stage characteristics of voltage attenuation of an electric pile of a hydrogen fuel cell; the life prediction module obtains a corresponding attenuation correction coefficient through a pile life prediction empirical model by utilizing historical durability data and combining with a parameter adjustment rule, obtains a pile minimum monolithic voltage attenuation curve corresponding to each reference current through the attenuation correction coefficient, and calculates a pile minimum monolithic voltage attenuation curve; and calculating to obtain a life prediction value corresponding to each reference current in the preset scene, and selecting the minimum life prediction value as a final life prediction value. By predicting the service life of the hydrogen fuel cell system, the memory occupation is reduced, and the cost is saved.