A Programmable High-Speed Current Detection Circuit

The existing micro current detecting apparatus is of large size and is manual controlled. When the detected currents sensitivity is higher, however, stability will be worse. In order to solve this problem, an adaptive detection system is proposed in this paper. The system designed a micro current signal detection circuit based on OK6410 embedded with development board. The Weak current signal is collected with the high precision ADC. Automatic adjustment circuit gain is from 1 to 10000. Spectrometer wavelength size is changed in real-time. Current resolution can reach nA. The experimental results show that this system can collect the micro current effectively. The main characteristics of the system are simple circuit structure, small volume, high degree of automation, and strong reliability, and it greatly improves the anti-interference performance of the circuit. The system can not only be applied in electrochemical current detection, but also be widely used in weak signal detection.

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A highly sensitive wide-range weak current detection circuit for implantable glucose monitoring

IEICE Electronics Express ◽

10.1587/elex.13.20150616 ◽

2016 ◽

Vol 13 (8) ◽

pp. 20150616-20150616 ◽

Cited By ~ 3

Author(s):

Xi Tan ◽

Sizheng Chen ◽

Xiao Yan ◽

Yibo Fan ◽

Hao Min ◽

...

Keyword(s):

Glucose Monitoring ◽

Weak Current ◽

Highly Sensitive ◽

Wide Range ◽

Detection Circuit ◽

Current Detection

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A new high speed phase detection circuit with π phase difference detection

2017 Iranian Conference on Electrical Engineering (ICEE) ◽

10.1109/iraniancee.2017.7985474 ◽

2017 ◽

Cited By ~ 1

Author(s):

Saeed Taheri ◽

Noushin Ghaderi ◽

Amin Amani

Keyword(s):

Phase Difference ◽

High Speed ◽

Phase Detection ◽

Difference Detection ◽

Detection Circuit

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Integrated zero-inductor-current detection circuit for step-up DC–DC converters

Electronics Letters ◽

10.1049/el:20061289 ◽

2006 ◽

Vol 42 (16) ◽

pp. 943 ◽

Cited By ~ 15

Author(s):

L.H. Phuc ◽

C.S. Chae ◽

M.C. Lee ◽

S.W. Wang ◽

S.I. Kim ◽

...

Keyword(s):

Detection Circuit ◽

Current Detection

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Study on the System Disturbance Rejection Method Used in the Gimbal Servo System of Magnetically Suspended Control Moment Gyro

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.588-589.351 ◽

2012 ◽

Vol 588-589 ◽

pp. 351-354

Author(s):

Zong Sheng Wang ◽

Jian Cheng Fang ◽

Xiu Zhi Meng

Keyword(s):

High Speed ◽

Magnetic Levitation ◽

Angular Rate ◽

Servo System ◽

Significant Inhibition ◽

Friction Torque ◽

Detection Circuit ◽

The Stability ◽

The Impact ◽

Disturbance Torque

In order to suppress the impact of the friction torque and the magnetic levitation high-speed rotor system on the stability of gimbal servo system output angular rate, a self-adaption compensation method with no modeling for disturbance torque is presented. The interference suppressor calculates the disturbance compensation based on the torque motor current and the angular rate measured real-time by the current detection circuit and the frame angular detection circuit in the gimbal servo system, then feedbacks to the frame servo system controller to regulating the torque motor output current. 500Hz and 50Hz sinusoidal disturbance torque are introduced into the system to test the role of the interference suppressor. The result proves the interference suppressor has the same significant inhibition of effect for disturbance torque of different frequencies by MATLAB simulating framework output angular rate waveform.

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