A 12-volt system intelligent centralized control electrical box based on lin bus

Abstract

A 12v system intelligent centralized control electric appliance box based on an LIN bus comprises a sensor input module, a micro controller unit (MCU) and a front cabin electric appliance box body. The 12v system intelligent centralized control electric appliance box based on the LIN bus is characterized in that the sensor input module is connected with the front cabin electric appliance box body, the sensor input module is connected with the MCU which is mounted with an LIN transceiver, an intelligent power pipe and a low side driving chip respectively. The LIN transceiver, the intelligent power pipe and the low side driving chip are connected with the front cabin electric appliance box body. The MCU is connected with a logic circuit which is connected to the intelligent power pipe and the lower side driving chip. A frequency divider is connected to the logic circuit. An input end and an output end of a clock generator are connected to the frequency divider. Power loss of the 12v system intelligent centralized control electric appliance box is smaller than 0.9mA, the front cabin electric appliance box body is controlled by the fact that the LIN receives a control instruction, a protection function can be provided for vehicle body loading, a monitoring function and a diagnostic function on loading can be achieved, and a Limp home function is achieved.

Description

technical field [0001] The invention belongs to the technical field of auto parts, specifically relates to the field of automobile intelligent centralized control electrical box, in particular to a 12-volt system intelligent centralized control electrical box based on LIN bus. Background technique [0002] The central electrical box is the traditional standard configuration of the car. It assembles the relays, fuses and circuit monitoring components that need to be controlled on the car body into a whole through the printed circuit board and the housing, and completes the multi-wire matching assembly with the relevant wiring harness. Realize electronic and electrical centralized control and distribution functions. The automotive central control electrical box has gone through the following stages: [0003] The first stage is the central centralized control electrical box using metal sheets. Delphi used it commercially for the first time in 1991. This control box is suitable...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the technical defect that the existing centralized control electrical box can neither diagnose the components on the integrated circuit board nor realize the Limp Home function, the present invention provides a 12-volt system intelligent centralized electrical box based on the LIN bus to realize sensor data collection. At the same time, it receives the operation commands on the LIN bus to realize the electrical actions on the electrical box, and diagnoses some control objects through the smart tube, and sends them directly to the LIN bus if there is a fault; at the same time, it adopts the Limp Home function to control some electrical appliances that meet the requirements of safety regulations.

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