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Clock holding device having power-off protection function

A technology of power-off protection and holding devices, which is applied in the direction of instruments, computer control, simulators, etc., can solve the problems of increased device size and high cost, and achieve the effects of low cost, small size, and shortened restart time

Inactive Publication Date: 2015-09-30
PLA 63698 ARMY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the high power of the equipment, if the overall power supply is powered by UPS (uninterruptible power supply), the volume of the device will increase significantly and the cost will be high

Method used

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  • Clock holding device having power-off protection function
  • Clock holding device having power-off protection function

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Embodiment Construction

[0017] see figure 1 , the invention relates to a clock holding device with power-off protection function, comprising a single-chip microcomputer and a relay, five digital signal interfaces are arranged on the single-chip microcomputer, one is a clock signal input connected with a measurement and control device, and two circuits are connected with a display device The detection result output, one is the output of the system clock holding signal generated by the single chip microcomputer, and the other is the output of the switching control signal.

[0018] Among them, the clock signal generated by the measurement and control equipment is respectively connected with the clock signal input interface of the single chip microcomputer and the input port of the relay, and the clock holding signal output interface and the switching control signal output interface are respectively connected with the two input ports of the relay.

[0019] The output of the two detection results is a dig...

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Abstract

The invention relates to a clock holding device having a power-off protection function. The clock holding device comprises a single chip microcomputer and a relay, wherein an input port of the single chip microcomputer is connected with a clock signal output port of measurement and control equipment, and the clock signal output port is further connected with an input port of the relay; two output ports of the single chip microcomputer are connected with input ports of the relay respectively, one output port is used for transmitting a clock holding signal produced in the single chip microcomputer, and switching control signals produced by the other output port for the single chip microcomputer is used for controlling switching of a normally-closed contact of the relay. The clock holding device guarantees continuous signal output of the clock even under the power-off condition, recovery of follow-up associated equipment is not affected by clock signal interruption, and restart time of the measurement and control equipment is shortened obviously.

Description

technical field [0001] The invention relates to a clock holding device, in particular to a single-chip microcomputer-based aerospace measurement and control equipment clock holding system with power-off protection function. Background technique [0002] At present, the clock generation device of the measurement and control equipment does not have the function of power failure protection. When the power supply of the power station is switched, the power is cut off or the equipment is partially faulty, the clock of the whole system is interrupted. Limited by the working mechanism of the measurement and control equipment, the interruption of the clock signal will significantly prolong the restart time of the measurement and control equipment. Due to the large power of the equipment, if the overall power supply is powered by UPS (uninterruptible power supply), the volume of the device will increase significantly, and the cost will be high. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/042G05B2219/20
Inventor 陈铠杜南克刘辉峰周道庆
Owner PLA 63698 ARMY
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