Universal touch-type switch matrix control card for liquid crystal display

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 an ARM+FPGA architecture, which belongs 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 testing of the system. [0003...

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.

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