Temperature compensation method and system of solar air conditioner for car

Abstract

Provided are a temperature compensation method and system of a solar air conditioner for a car. The method comprises the steps that 1, the position of the sun is detected; 2, the sun radiation perpendicular incidence intensity value, the sun radiation scattering intensity value and designed hourly temperature and humidity are detected; 3, the current longitude value and latitude value and the running direction of the car are detected; 4, the position relation between the sun and the car is judged; 5, outdoor environment data is determined; 6, a plurality of temperature compensation coefficients of the area where the car is located are calculated and stored in a database; 7, the corresponding temperature compensation coefficients in the database are queried, the sun light intensity is detected through a single-area light intensity sensor, and sunlight compensation is carried out on different areas of the car according to the function relation between the sunlight intensity and the temperature compensation coefficients and serves as temperature compensation. According to the method, the light intensity and temperature are coupled, therefore, general use of the solar air conditioner for the car is achieved, and the cost and achieving complexity of the multi-temperature-zone automatic conditioner are reduced.

Description

technical field [0001] The invention relates to vehicle air conditioning technology, in particular to a temperature compensation method and system for a solar air conditioner for vehicles. Background technique [0002] Nowadays, air conditioner is an indispensable equipment on the car. With the improvement of customers' requirements for comfort, multi-temperature zone solar air conditioners that can realize the temperature zone control in the vehicle are also more and more applied in vehicles. [0003] During the driving process of the vehicle, the impact of sunlight on each temperature zone of the vehicle varies with the position relationship between the sun and the vehicle, and the influence of factors such as the intensity of sunlight on various parts of the vehicle varies according to the season. The high temperature environment in the car will accelerate the volatilization of carcinogens in the car interior decoration materials, seriously affecting people's health, and...

AI Technical Summary

Problems solved by technology

Since multi-temperature zone air conditioners need to integrate multiple temperature sensors, the cost is high, which is not conducive to cost control; on the other hand, multiple temperature sensors will inevitably lead to a corresponding increase in the demand for input pin resources of the vehicle system controller, thereby increasing other The complexity of implementation is not conducive to the promotion and application of unmanned vehicles

Instead, the conventional control method of the central air conditioner is used for temperature compensation, usually DDC control based on the PID algorithm, and the control object of the air conditioning system - the thermal object has some unique characteristics, such as various interference effects, resulting in a wide range of air conditioning loads. Fluctuations and different seasons make the air conditioning system have multiple working conditions, and the correlation between temperature and humidity increases the difficulty of temperature control

Therefore, the conventional PID temperature control in the prior art is difficult to meet the requirements for multi-zone temperature control, with poor robustness, strong parameter hysteresis, difficult precise control, and prone to overshoot and oscillation

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