Self-adaptive adjusting method for LED illuminating lamp of underwater robot

A technology of LED lighting and self-adaptive adjustment, applied in the direction of energy-saving control technology, electrical components, etc., can solve the problem of inability to realize intelligent adjustment, and achieve the effect of smooth change, stable adjustment method, and improved intelligence

Inactive Publication Date: 2020-03-27
DALIAN MARITIME UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the adjustment of the brightness of the LED lighting of the underwater robot, the problem that intelligent adjustment cannot be realized

Method used

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  • Self-adaptive adjusting method for LED illuminating lamp of underwater robot
  • Self-adaptive adjusting method for LED illuminating lamp of underwater robot
  • Self-adaptive adjusting method for LED illuminating lamp of underwater robot

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings.

[0046] In order to illustrate the effectiveness and feasibility of the method, according to Figure 1-2 The flow shown carries out MATLAB simulation, and the present invention is verified. Assume that the value T=5000 set in the timing counter corresponding to one PWM period, the initial count value is TIM(t)=2000, t=1, the expected value x d =200, initial measured value x=120, control coefficient K=0.01. Figure 4In , since the initial measured value is smaller than the expected value, the counter value starts to increase after calculation by the microprocessor. As the underwater robot sinks slowly, the brightness of the environment also changes slowly. In order to simulate this change, a sine wave signal is added to the measured value. As the measured value increases, the count value TIM also increases smoothly, and the TIM increases slowly when it is close to poi...

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Abstract

The invention discloses a self-adaptive adjusting method for an LED illuminating lamp of an underwater robot. By calculating the ratio of the difference between the expected illumination intensity value and the measured illumination intensity value to the expected illumination intensity value, the influence brought by a unit is neglected, the ratio of deviation is obtained and multiplied by the PWM period, and the duty ratio which needs to be changed correspondingly in the period is obtained. In order to enable the LED illuminating lamp to change quickly and smoothly, a coefficient is multiplied on the basis, and the PWM duty ratio can be changed to the expected PWM speed through an adjusted numerical value. In order to achieve stepless adjustment, self-adaptive adjustment is achieved by measuring the error between a measured value and an expected value. According to the invention, the relationship between the environmental measurement value and the microprocessor timing counter is established, and the change speed of the counting value is adjusted by utilizing the deviation between the actual measurement value and the expected value, so that the LED terminal voltage is changed quickly, stably and smoothly, and the intelligence of the LED dimming system is improved.

Description

technical field [0001] The invention belongs to the field of intelligent adjustment of LED lights for underwater robots, and in particular relates to an environment self-adaptive adjustment method. Background technique [0002] Underwater robots play an important role in the military and in the detection of underwater resources and environments. For underwater robots, underwater LED lighting can provide good lighting for them, and providing suitable lighting is particularly important for underwater environment observation and underwater target recognition. [0003] LED is short for Light Emitting Diode. It is made using the visible light generated when electrons and holes recombine in a diode. Unlike resistive light sources such as traditional incandescent lamps, LED lighting can be switched on and off quickly. At present, the main ways of dimming are analog dimming, thyristor dimming and PWM dimming (that is, pulse width modulation technology). For the adjustment of LED...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/30
CPCY02B20/40
Inventor 赵红陈浩华姚玉斌陈廷凯李春艳黎承忠鲁挺贾玉森
Owner DALIAN MARITIME UNIVERSITY
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