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A generalized liquid crystal screen touch switch matrix control card and its application method

A technology of switching matrix and LCD screen, applied in the field of satellite testing, can solve the problems of reliability, poor practicability, single communication interface, black box of remaining life of switching matrix, etc.

Active Publication Date: 2017-05-10
CHINA ACADEMY OF SPACE TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the microwave switch matrices used in various satellite models are mostly controlled by single-chip microcomputer or ARM, which has poor manual controllability, cannot display the actual status of internal devices, single communication interface, poor reliability and practicability, and the black box problem of the remaining life of the switch matrix. And problems such as the temperature black box inside the switch matrix equipment have brought great inconvenience to engineering personnel in the actual use process
At the same time, most of the microwave switch matrices currently used in various satellite models are customized switch matrices, and the models are incompatible with each other, resulting in a great waste of resources.

Method used

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  • A generalized liquid crystal screen touch switch matrix control card and its application method
  • A generalized liquid crystal screen touch switch matrix control card and its application method
  • A generalized liquid crystal screen touch switch matrix control card and its application method

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Embodiment Construction

[0048] like figure 1 As shown, it is a composition block diagram of a generalized liquid crystal screen touch switch matrix control card of the present invention, including: ARM embedded processor 1, FPGA2, touch liquid crystal screen 3, control panel button 4 drive circuit 5, feedback Acquisition circuit 6, E2PROM 7 and temperature measurement circuit 8.

[0049] In the specific implementation of the present invention, ARM embedded processor selects LPC2294 of NXP; FPGA selects XC3S700A-4FG484I of Xilinx. LPC2294 is mainly responsible for network port communication control, XC3700A has 372 IO interfaces, and is mainly responsible for the control of all RF switches, program-controlled attenuators and other RF devices in the switch matrix. The network chip adopts W5100, which supports network protocols such as TCP\IP and UDP, and supports a network rate of 100Mbps. FPGA uses 74lvc164245 (TTL) with ULN2003A (OC) chip as the driver circuit to control the programmable attenuator...

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Abstract

The invention discloses a universal touch-type switch matrix control card for a liquid crystal display. The universal touch-type switch matrix control card comprises an ARM embedded processor, an FPGA, a touch-type liquid crystal display, a control panel key, a drive circuit, a feedback acquisition circuit, an E2PROM and a temperature test circuit, wherein a user carries out instruction sending in control modes of upper computer software, direct instructions, the touch-type liquid crystal display, control panel keys and the like, the ARM embedded processor receives the instructions sent by the user and carries out instruction decoding, converts the instructions to corresponding radiofrequency device operation instructions and sends the corresponding radiofrequency device operation instructions to the FPGA, and the FPGA finishes control on a radiofrequency device by virtue of the drive circuit; after the FPGA sends the instructions to the radiofrequency device, the state information of the radiofrequency device is obtained by the feedback acquisition circuit, and the information is uploaded to the ARM embedded processor, and displayed in real time by the touch-type liquid crystal display or the upper computer software. According to the universal touch-type switch matrix control card disclosed by the invention, safety is improved, and a state recovery problem after system power-off, the black box problem of the use remainder life of a switch matrix, and the black box problem of the internal temperature of the switch matrix are solved.

Description

technical field [0001] The invention relates to a generalized liquid crystal screen touch switch matrix control card based on ARM+FPGA architecture and an application method thereof, belonging to the technical field of satellite testing. Background technique [0002] The switch matrix can transmit the measurement signal from the device under test to the measuring instrument, and can also switch any signal to the device under test at any time. The switch matrix is ​​mainly to realize the information exchange between the automatic test system and the DUT and provide the necessary load port for the DUT. The microwave switch matrix controls the switching of the RF switch and the variable attenuator in the switch matrix to complete the setting of the connection status between other ground test equipment and the satellite during the satellite system test, and complete the switching of the RF channel to form a complete calibration and test path, so as to realize the automated test...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
Inventor 吕德东张阁刘万富朱晓辉陈香萍
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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