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Current source output circuit

A technology of output circuit and current source, which is applied in the electronic field, can solve problems such as the inability to monitor the output state, and achieve the effect of reducing losses

Active Publication Date: 2018-01-19
SHAANXI QIANSHAN AVIONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Such as the pipeline booster pump and voltage regulation control box on the commonly used current source drive machine on the tanker, so the current source circuit can play a vital role in the onboard work. If the current source output is abnormal, it will cause the onboard The operation of the equipment is out of control, while the conventional current source output circuit only provides current output and cannot monitor the output state

Method used

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Embodiment Construction

[0018] Provide a current source output circuit, including an isolation circuit [1], a voltage divider circuit [2], a current source circuit [3], a digital-to-analog conversion circuit [4], a controller [5], an output monitoring circuit [6] and Output shutdown circuit [7];

[0019] The controller [5] circuit controls the output current of the current source circuit [3] through the digital-to-analog conversion circuit [4]. During the process of outputting the current, the controller [5] monitors the working state of the output circuit in real time through the output monitoring circuit [6] , when the controller [5] detects that the circuit output is abnormal, the output circuit is turned off by the output shutdown circuit [7]; the output terminal of the current source, the voltage divider circuit and the isolation circuit are sequentially connected in series, and the output monitoring circuit [6 ] are respectively connected to the output terminals of the voltage divider circuit a...

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Abstract

The invention relates to a current source output circuit which includes an isolation circuit [1], a voltage dividing circuit [2], a current source circuit [3], a digital-to-analog conversion circuit [4], a controller [5], an output monitoring circuit [6] and an output shutdown circuit [7]. When the current source output circuit is working, the controller [5] controls the current source circuit [3]to output current through the digital-to-analog conversion circuit [4], in the process of outputting the current, the controller [5] monitors the working state of an output circuit in real time through the output monitoring circuit [6], when the controller [5] detects a circuit output abnormality, the output circuit is shut off through the output shutdown circuit [7], and the affection of the working state of equipment on a machine by the output abnormality is avoided.

Description

technical field [0001] The invention belongs to the category of electronic technology, is applied in the technical field of avionics, and is a current source output circuit. Background technique [0002] The current source output circuit is a commonly used circuit in the airborne. It is mostly used to drive the sensors on the machine to make it work normally. The output current ranges from 4 to 20mA. It is divided into constant current source and adjustable current in use. source. [0003] Such as the pipeline booster pump and voltage regulation control box on the commonly used current source drive machine on the tanker, so the current source circuit can play a vital role in the onboard work. If the current source output is abnormal, it will cause the onboard The operation of the equipment is out of control, and the conventional current source output circuit only provides current output and cannot monitor the output state. Contents of the invention [0004] Purpose of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/40H02H3/00
Inventor 刘安章车飞锋刘建
Owner SHAANXI QIANSHAN AVIONICS
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