Over current (OC) instruction matrix circuit with impact resistance

A matrix circuit, anti-shock technology, applied in the field of OC command matrix circuit, can solve problems such as instantaneous shock and device failure, and achieve the effect of avoiding instantaneous shock

Active Publication Date: 2013-08-28
BEIJING INST OF CONTROL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because different devices in the matrix command output circuit respond inconsistently to the group strobe signal (column control signal) and the group command signal (row control signal) at the time of establishment and release (caused by device differences), it will form at the group strobe signal control end. Instantaneous high-voltage shocks, forming instantaneous shocks to the column control circuit, and may cause device failure

Method used

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  • Over current (OC) instruction matrix circuit with impact resistance
  • Over current (OC) instruction matrix circuit with impact resistance
  • Over current (OC) instruction matrix circuit with impact resistance

Examples

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Embodiment

[0033] The basic unit of the output instruction in the instruction matrix adopts the integrated chip SG2023 of LINFINITY Company, and each chip internally encapsulates 7-way OC compliance drivers, such as figure 2 Shown is a schematic diagram of an instruction matrix driving circuit, and the common ground terminal of the chip is controlled by the column gating control circuit of the matrix instruction. In order to prevent the failure of a single device to cause wrong commands to be issued, the column command control circuit is realized by connecting two stages of triodes in series.

[0034] figure 2 The middle line signal is a common signal, in order to prevent crosstalk between signals, it is isolated and protected by diodes. The 1M ohm resistance to ground realizes the virtual ground connection of the triode follower pole at the upper end of the column signal control circuit, ensuring that this point has a fixed level value when no command is issued, and is always the low...

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Abstract

The invention discloses an over current (OC) instruction matrix circuit with impact resistance, which comprises a row / column signal control circuit which is used for generating N paths of row signals and M paths of column signals. Each path of row signal is respectively connected with each corresponding basic unit by an isolation diode, and each path of column signal is respectively connected with the same group of basic units by a column signal control circuit. By adopting the OC instruction matrix circuit with the impact resistance, the problem of instantaneous impact of an OC instruction matrix interface is solved, and the reliability of the interface is enhanced.

Description

technical field [0001] The invention relates to an impact-resistant OC command matrix circuit, which is suitable for applications requiring high weight, volume and reliability in OC command output. Background technique [0002] A large number of remote control command outputs in my country's spacecraft use OC (open collector, Open collector) interface form, which is simple in structure and strong in versatility. In order to improve the interface reliability and drive capability, the remote control command interface generally adopts a double-serial and double-parallel structure of triodes. The biggest problem with this structure is that the hardware resources are expensive. When the number of commands is large, and the volume and weight are limited, the contradiction appears especially. protrude. [0003] In order to use limited resources to achieve more OC instruction output, and take into account the limitations of weight, volume and power consumption, a large number of in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/003
Inventor 宫经刚刘波
Owner BEIJING INST OF CONTROL ENG
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