A lin network slave node

Abstract

Provided are a control method and a control system for local interconnected network (LIN) slave nodes. The LIN slave nodes comprise an electronic control part, wherein the electronic control part comprises an LIN single detection receiving and controlling module, a processing module and an LIN signal sending module, wherein the processing module and the LIN signal sending module can be forbidden or activated, the LIN signal detection receiving and controlling module is maintained in an activation status in a power on situation and has the functions of waking up signal identification and conducting activation and forbiddance to the processing module and the LIN signal sending module, the LIN signal detection receiving and controlling module sends a detected signal on a LIN bus to the processing module and controls the processing module and the LIN signal sending module, the processing model controls the activation or the forbiddance of the LIN signal sending module and / or the processing model according to the judgment whether the signal is related to a node or not, and the LIN signal sending module receives a signal output by the processing module and send the signal to the LIN bus. The control method and the control system for the LIN slave nodes offer a LIN node which is used for achieving low energy consumption.

Description

technical field [0001] The invention relates to the field of LIN (Local Interconnect Network) network technology, in particular to a slave node of a LIN network. Background technique [0002] The LIN protocol is one of the mainstream protocols currently used in automobiles. The LIN network structure adopting the LIN protocol includes a master node (master node) and multiple slave nodes (slave nodes), and the number of slave nodes is 15 at most. The slave node can be used as a detection component (sensor) or an execution component (actuator), such as various detection modules and motor drive modules in the car. Due to the large number of slave nodes, if the power consumption of each slave node can be as low as possible, it will help reduce the power consumption of the entire LIN network. [0003] In addition, for the slave nodes used in the automotive environment, the use environment also requires the slave nodes to reduce power consumption as much as possible, especially fo...

AI Technical Summary

Problems solved by technology

The scheme described in this patent only activates the LIN sending module when it is necessary to send a LIN signal, which can indeed reduce the power consumption of the entire node to a certain extent, but the effect is not significant

see figure 2 , it can be seen that in addition to the LIN receiving module 60 and the LIN sending module 66, the entire node also includes a processing module 62 and an IGFS sensor module 64. When the processing module 62 and the (IGFS) sensor module 64 do not need to be used, these two modules are kept in an active state, Also causes additional power consumption

The LIN sending module only performs the logic level conversion function, while the processing module 62 is the control center of the entire node, and the sensor module 64 is a function execution component. Compared with the LIN sending module, the functions of these two modules are much more complicated and consume more power. Much, the invention does not involve how to reduce the power consumption of the module with the largest power consumption in the node, which is where the invention needs to be improved

Images