Intelligent controller of automobile air conditioner

Abstract

The present invention discloses an intelligent controller of an automobile air conditioner, comprising a central single chip processor, a power source management module, an air conditioner blower driving signal module and an air door motor control module connected with the central single chip processor. The power source is effectively managed by the power source management module so as to reduce the energy consumption of the controller; through the air conditioner blower driving signal module, the speed of the blower is dynamically adjusted according to the sampling data of a senor or the setting of passengers, and the constant speed of the blower is ensured during the period of stable operation; and by adopting the air door motor control module, the stability of the temperature controlled air door is realized so as to avoid the oscillation of a temperature controlled motor back and forth.

Description

technical field [0001] The invention relates to an air conditioner controller, in particular to an intelligent controller for an automobile air conditioner. Background technique [0002] At present, domestic automotive air-conditioning controllers generally use manual wire pulling and electric methods, and there are many defects and flaws: [0003] 1. The lack of management of the power management system leads to excessive current consumption of the controller when the ignition switch is turned off, which is not conducive to achieving the goal of energy saving and emission reduction. [0004] 2. The control target of the air conditioner blower is to drive the D pole voltage of the field effect tube. The assumed prerequisite is that the vehicle voltage is stable at 12V, and the blower voltage = 12V-the D pole voltage of the field effect tube, so as to realize the closed-loop control of the blower speed. But it is well known that the mains voltage in the car is always fluctua...

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Problems solved by technology

[0003] 1. The lack of management of the power management system leads to excessive current consumption of the controller when the ignition switch is turned off, which is not conducive to achieving the goal of energy saving and emission reduction

[0004] 2. The control target of the air conditioner blower is to drive the D pole voltage of the field effect tube. The assumed prerequisite is that the vehicle voltage is stable at 12V, and the blower voltage = 12V-the D pole voltage of the field effect tube, so as to realize the closed-loop control of the blower speed. But the mains voltage in cars is known to fluctuate all the time, which causes the blower speed to fluctuate with the mains voltage, significantly reducing passenger comfort

[0005] 3. The temperature control damper and mode damper of the air conditioning system are controlled by the feedback voltage positioning method. Due to the influence of motor inertia, sampling error and random noise, the damper swings back and forth and oscillates, or the control error is enlarged, resulting in comfort control. The goal is difficult to achieve; at the same time, the damper adjustment system is a relatively large load outside the controller, and the probability of overcurrent, short circuit, and overvoltage is relatively high, and the controller lacks effective countermeasures, which often leads to damage to the controller and a lot of waste and security risks

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