Automobile logo lamp control system and control method

Abstract

The invention discloses an automobile logo lamp control system which is connected with headlamp assemblies arranged on the two sides of the front portion of an automobile. The headlamp assembly on a first side of the front portion of the automobile outputs a voltage, and the headlamp assembly on a second side of the front portion of the automobile outputs digital signals. The automobile logo lampcontrol system comprises a function sampling circuit which is connected with the headlamp assembly on the second side of the front portion of the automobile to collect digital signals output by the headlamp assembly on the second side of the front portion of the automobile, a control module which is connected with the function sampling circuit, a driving circuit which is connected with the headlamp assembly on the first side of the front portion of the automobile and an automobile logo lamp assembly to supply power to the automobile logo lamp assembly, and a PWM regulation function switching circuit which is connected between the control module and the driving circuit wherein the control module controls the PWM regulation function switching circuit according to signals transmitted to the control module by the function sampling circuit so as to control the automobile logo lamp assembly. In addition, the invention discloses an automobile logo lamp control method.

Description

technical field [0001] The invention relates to a circuit control system and a control method thereof, in particular to a lamp circuit control system and a control method thereof. Background technique [0002] At present, there are very few manufacturers in the automobile market that have the lighting effect of the front logo lights. With the continuous development of the automobile industry and the continuous improvement of customers' brand awareness, the logo lights have become more and more fashionable and high-end symbols. Therefore, it has become a trend in the field of automotive lamps that the lighting of car logo lights is even lit in a way that customers demand. [0003] The general lighting driving method of the car logo is to directly lead the power supply from the pin of the central control module (hereinafter referred to as BCM), and control the lighting of the car logo through a simple linear drive. However, this control method has many disadvantages, such as:...

AI Technical Summary

Problems solved by technology

However, this control method has many disadvantages, such as:

[0004] (1) This control method will need to occupy the pin resources of the BCM, and in the current model, the BCM pins do not consider the resource allocation of driving the logo lights, so for most models, the BCM There are not enough pins allocated for the logo lights

[0005] (2) This control method can only realize the open-circuit diagnosis of the car logo lamp, but cannot realize the real-time detection of the car logo. Once the car logo lamp has a short-circuit fault, this control method cannot identify it

[0006] (3) The driving ability of this control method to drive the car logo lights is limited by the power supply of the BCM and the characteristics of the LED itself, and there are strict requirements on the number of car logo lights LEDs. The forward voltage is usually between 3-4V, so this driving method can only drive 3-4 LEDs at most

[0007] (4) This control method cannot achieve the effect of gradually lighting up and gradually extinguishing the car logo, and it is even more impossible to achieve a higher-demanding breathing effect

[0008] (5) This control method does not have a thermal protection circuit, therefore, more heat dissipation measures are required in circuit design

[0009] To sum up, it can be seen that the car logo lights in the prior art cannot perfectly match the vehicle system, cannot realize the lighting logic control in different modes, and cannot realize the real-time detection of the car logo lights

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