A temperature compensation method and system for a solar air conditioner for a vehicle

Abstract

A temperature compensation method and system for a solar air conditioner for a vehicle, comprising (1) detecting the position of the sun; (2) detecting the direct solar radiation intensity value, the solar radiation scattering intensity value and the hourly temperature and humidity of a design day; (3) Detect the longitude and latitude values ​​of the vehicle and the driving direction at that time; (4) judge the positional relationship between the sun and the vehicle; (5) determine the outdoor environment data; (6) calculate multiple temperature compensation coefficients in the area where the vehicle is located, and store In the database; (7) query the corresponding temperature compensation coefficient in the database; detect the sunlight intensity by a single-zone light intensity sensor; perform sunlight compensation on different areas of the vehicle according to the functional relationship between the sunlight intensity and the temperature compensation coefficient as temperature compensation. The method couples light intensity and temperature to realize the universal use of solar air conditioners for vehicles, and reduces the cost and implementation complexity of multi-temperature zone automatic air conditioners.

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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