Anti-clamp circuit of electric skylight

Abstract

The invention relates to an anti-clamp circuit of an electric skylight. The common electric skylight is easy to heart passengers, and has serious safety hazard. A small part of skylight with the anti-clamp function has simple anti-clamp circuit, and has the problems of low precision, large error and the like. The invention comprises a microcontroller, a motor driving circuit, a LIN driving circuit, a signal sampling circuit, a power supply circuit, a position sensing circuit, a press key circuit, a status indicating circuit, a debugging interface circuit and a data storage circuit. The motor driving circuit is connected with a signal at the signal end of the microcontroller, and the LIN driving circuit is connected with a serial communication port of the microcontroller through signals. The signal sampling circuit is connected with an analog and digital sampling port of the microcontroller through signals. The position sensing circuit is connected with a position I / O port of the microcontroller through signals. The storage circuit is connected with a storage I / O port of the microcontroller through signals. The invention has the advantages of high anti-clamp precision, small error,strong uniformity and low cost.

Description

technical field [0001] The invention belongs to the technical field of automotive electronics, and in particular relates to an electric sunroof anti-pinch circuit. Background technique [0002] Ordinary electric sunroofs without anti-pinch function are easy to pinch passengers, and there are serious safety hazards. Since the mid-1990s, anti-pinch electric sunroof systems have gradually appeared, and corresponding safety regulations have been issued internationally. [0003] In the process of opening the electric sunroof, it must overcome various interferences such as gravity and friction before it can prevent pinching. The main problems to be overcome in the anti-pinch design process are: (1) accurately detect and quickly release obstacles in the detection area; (2) ensure that the maximum force of the trapped obstacle is less than a certain value; (3) overcome the anti-pinch The influence of the mechanical parameters and electrical parameters of the electric sunroof on the...

AI Technical Summary

Problems solved by technology

[0005] The sunroof of many cars does not have the anti-pinch function, and a small number of sunroofs with the anti-pinch function have a relatively simple anti-pinch circuit, which has a series of shortcomings such as low precision, large error, poor consistency, high power consumption, and high cost.

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