Program-control current source

A program-controlled current source and current source technology, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problems of low precision, single output channels, and inability to change quickly and dynamically, and achieve the effect of fast update time
CN103246307AActive Publication Date: 2013-08-14航天科工惯性技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
航天科工惯性技术有限公司
Publication Date
2013-08-14

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Abstract

The invention relates to a current source device, in particular to a program-control current source. The program-control current source comprises a CPU (central processing unit) control circuit, a plurality of conversion modules and a calibrating circuit. The CPU control circuit receives data output by an upper computer, and each conversion module outputs actuating signals including control signals and data signals and comprises a D / A (digital / analog) conversion circuit and a V / I (voltage / current) conversion circuit. The D / A conversion circuits receive actuating signals output by the CPU control circuit and provides analog voltage signals for the V / I conversion circuit. The V / I conversion circuits converts the analog voltages signals and outputs analog current signals. The calibrating unit is used for sampling the analog current signals output by each V / I conversion circuit, and the CPU control circuit calibrates the analog current signals. The current source in the embodiment can provide multichannel outputs and is wide in dynamic output range and high in accuracy.
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Description

technical field

[0001] The invention relates to a current source device, in particular to a program-controlled current source device. Background technique

[0002] Since current signals have stronger anti-interference ability than voltage signals, especially when performing long-distance signal transmission, various current sources are widely used in industrial control. In industrial applications, it is often necessary to convert various physical quantities such as voltage, power, frequency, temperature, pressure, speed, angle, etc. into current quantities for processing or display by back-end circuits or devices.

[0003] In the ground hardware-in-the-loop simulation test of the inertial navigation system (hereinafter referred to as the inertial navigation system), it is necessary to dynamically simulate the current output of the quartz flexible accelerometer, and then simulate the acceleration component of the flight trajectory curve, which is used as the flight attitude o...

Claims

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