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High precision sunward automatic tracking method

A technology of automatic tracking and automatic tracking device, which is applied in the direction of control using feedback, can solve the problems of low measurement accuracy, achieve the effects of high system measurement accuracy, improve control accuracy, and overcome poor control accuracy

Inactive Publication Date: 2014-12-17
XIDIAN UNIV
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Problems solved by technology

The disadvantage of this patented technology is that this method relies on the shaded intensity of the silicon photocell to measure the angle change of the sunlight. Since the sunlight intensity varies in a large range, the difference between different silicon photocells is very small when the sunlight is weak. , resulting in low measurement accuracy of the system

Method used

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Embodiment Construction

[0035] Attached below figure 1 , further describe the software flow of the present invention.

[0036] Step 1, system initialization

[0037] Before the system works normally, each device must be initialized, including: system clock initialization, port initialization, LCD initialization, serial port initialization, analog / data control register initialization, real-time clock initialization, and timer initialization.

[0038] The system clock selects an external clock as a reference, and the size of the external crystal oscillator is 11.0592MHZ; when the port is initialized, set the input and output mode of the IO port, open the internal cross switch and weak pull-up resistor of the central processing unit, and set P1, P2, P3, P5- P7 port is output, P4 port is input and open-drain mode, configures external memory interface, external memory timing control.

[0039] Initialize the liquid crystal display, determine the connection mode of the pins of the liquid crystal display and...

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Abstract

The invention discloses a high precision sunward automatic tracking method. In order to improve the measuring precision, the method comprises the steps of: correcting error after installation of a system to eliminate the original error of the system; rapidly controlling the device according to a rapid control algorithm and a linear work section of a position measurement sensor; automatically adjusting the signal gain by using an intelligent gain adjusting algorithm to improve the measuring precision of the system, and improve the control precision of the device when a measuring signal is weaker; and inputting the measured data to a liquid crystal display screen and a serial port in real time for a user to conveniently observe on site and remotely. According to the high precision sunward automatic tracking method provided by the invention, the control precision of the system can be improved to 0.018 degrees, thereby improving the work efficiency of a solar power generating device.

Description

technical field [0001] The invention belongs to the field of automatic control, and further relates to a high-precision sunward automatic tracking method based on Position Sensitive Detectors in solar power generation technology. The invention accurately measures the deviation angle between the position sensitive detector and the sunlight by a computer, realizes the automatic tracking of the equipment to the sun, improves the tracking accuracy of the solar power generation equipment to the sun, and thus improves the working efficiency of the power generation system. Background technique [0002] At present, the existing heliotropic tracking control methods are mainly divided into two categories: the first category is the time-based apparent solar trajectory tracking method, which controls the tracking of the sun according to the changing law of the sun's altitude angle and azimuth angle with time. This adjusts the angle between the solar receiving plate and the sun; the seco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/12
Inventor 司栋森陈臣王晓旭曹伯燕
Owner XIDIAN UNIV
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