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Filter wheel and focusing control liquid crystal display system of space camera

A technology of liquid crystal display and space camera, which is applied in the direction of testing optical performance, etc., can solve the problems of single control mode and function, and achieve the effect of great economic and social benefits

Inactive Publication Date: 2013-09-18
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the control method and function of the prior art are single and unable to meet the experimental requirements, the present invention provides a space camera filter wheel and focusing control liquid crystal display system, which can select the working state for different experimental purposes , set the status parameters, and display the status parameters of the whole system in real time

Method used

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  • Filter wheel and focusing control liquid crystal display system of space camera
  • Filter wheel and focusing control liquid crystal display system of space camera
  • Filter wheel and focusing control liquid crystal display system of space camera

Examples

Experimental program
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Effect test

Embodiment 1

[0064] In online mode, use the host computer control unit to adjust the filter wheel, click the band 1 button on the control interface, the system executes the command, after the adjustment, the LCD screen displays the current code value is 30002H, and the current band is band 1. Click the band 2 button on the control interface, and the system will execute the command. After the adjustment, the LCD will display the current code value as 40003H, and the current band is band 2.

Embodiment 2

[0066] In offline mode, use the system control switch and the switch and key of the key unit to control the system work, press the filter wheel to control the cruise switch, the system executes the command, first go to spectrum 1, stop for 4s, and the LCD displays the current code value It is 30001H, the current band is band 1, then turn to band 2, stop for 4s, the LCD shows that the current code value is 3FFFDH, the current band is band 2, and then proceed in sequence until band n stops.

Embodiment 3

[0068] In the online mode, use the upper computer control unit to control the focus, input 50000H in the target code value of the control interface, click the send button, the system executes the command, after the focus is completed, the LCD screen displays the target code value as 50000H, and the current code value is 4FFFFH.

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Abstract

The invention relates to the field of space camera control and provides a filter wheel and focusing control liquid crystal display system of a space camera. The filter wheel and focusing control liquid crystal display system comprises an upper computer control unit, a filter wheel and focusing control unit, a focusing executing mechanism and a filter wheel adjustment executing mechanism; two-way communication is performed on the filter wheel and focusing control unit and the upper computer control unit; the filter wheel and focusing control unit provides system state parameters for the upper computer control unit; the upper computer control unit sends control commands and data parameters to the filter wheel and focusing control unit; the filter wheel and focusing control unit sends stepper motor driving signals to the filter wheel adjustment executing mechanism to control operation of the filter wheel adjustment executing mechanism; the filter wheel adjustment executing mechanism provides code value signals of a filter wheel encoder for the filter wheel and focusing control unit; the filter wheel and focusing control unit sends stepper motor driving signals to the focusing executing mechanism to control operation of the focusing executing mechanism; and the focusing executing mechanism provides code value signals of the filter wheel encoder for the filter wheel and focusing control unit. According to the filter wheel and focusing control liquid crystal display system of the space camera, working modes are selected and system parameters are set according to different experiment purposes to achieve closed loop control on a filter wheel and focusing, perform real-time display on the state parameters and achieve multi-function control.

Description

technical field [0001] The invention relates to the field of space camera control, in particular to a space camera filter wheel and focusing control liquid crystal display system. Background technique [0002] As an important payload of remote sensing satellites, space cameras are widely used in many fields such as military reconnaissance, weather forecasting, resource exploration and environmental monitoring. In order to improve the resolution of specific crops, oceans, atmosphere, soil and other targets, space cameras mostly use multi-spectral imaging technology and image through some specific color filters. The filter wheel can precisely adjust the position of the filter, switch the imaging spectrum, and realize multi-spectral imaging. Due to changes in the space environment, the focal plane of the camera will shift. At this time, it is necessary to adjust the focal plane to avoid defocusing. Similarly, when the satellite adjusts its attitude and changes its orbit, it al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
Inventor 刘海龙韩诚山郝伟傅瑶姜肖楠文明孙雪晨
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI