Design of Pt100 Temperature Measuring System Based on System-on-Chip for C8051F410

2011 ◽  
Vol 382 ◽  
pp. 187-190 ◽  
Author(s):  
Qi Liu ◽  
Xue Zhong Ai ◽  
Ying Wang ◽  
Ren Yu Liu
Keyword(s):  
Current Source ◽  
Absolute Error ◽  
System On Chip ◽  
System Stability ◽  
Measuring System ◽  
Constant Current ◽  
Temperature Measuring ◽  
Development Costs ◽  
Source Signal ◽  
On Chip

In order to reduce development costs, improve system stability and reliability, we designed high precise temperature measuring system with system-on-chip of C8051F410 as control core, using three wire constant current sources to drive Pt100 temperature sensor. The Operational principle and design basis of current source, signal conditioning and modulus convert circuits are analyzed, and also given circuit structure and circuit parameters. Experimental results show that absolute error is less than 0.15°C and accuracy level is 0.02 that can achieve real-time measure with high precisions in -50°C ~ 500°C range.

The Design of Temperature Measuring System Based on ARM

2013 ◽  
Vol 325-326 ◽  
pp. 899-902
Author(s):  
Jin Ge Sang ◽  
Guo Li Yu ◽  
Ya Nan Wang ◽  
Jun Zhang
Keyword(s):  
Software Design ◽  
Digital Signal ◽  
Temperature Data ◽  
Experimental Results ◽  
System Stability ◽  
Measuring System ◽  
Temperature Measuring ◽  
New Type ◽  
The Way

t gives a new type of Temperature Measuring System equipped with Samsung S3C2410. Chip DS18B20 is responsible for collecting temperature data, which was transmitted to the chip of S3C2410 in the way of digital signal. The hardware composition and software design of the system were discussed in detail. The experimental results indicate that the design improves the system stability and reliability.

The Design of Data Acquisition System in Wireless Dynamic Strain Acquisition Technology

2014 ◽  
Vol 607 ◽  
pp. 673-676 ◽  
Author(s):  
Chen Ding ◽  
Ya Wen Dai ◽  
Peng Li ◽  
Yang Sun ◽  
Wei Zheng Wang ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Current Source ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Constant Current ◽  
Dynamic Strain ◽  
Accurate Data ◽  
Constant Current Source ◽  
Signal Amplifier ◽  
Source Signal

Dynamic strain acquisition technology is becoming increasingly important in industrial production. Compared with the static strain acquisition technology,the dynamic stain acquisition technology provided a much wider range of frequencies from 0~100KHz which required a much more accurate data acquisition system. This paper proposed an accurate data acquisition system which included electric bridge、constant current source、signal amplifier and anti-aliasing filter. This system has largely suppressed noise and increased the performance of the dynamic strain acquisition.

Micro-Ohm Resistance Measure System Based on LabVIEW

2013 ◽  
Vol 347-350 ◽  
pp. 111-116
Author(s):  
Tian Tian ◽  
Xu Min Zhao ◽  
Li Na Zeng ◽  
Yu Tao
Keyword(s):  
Virtual Instrument ◽  
Reference Signal ◽  
Current Source ◽  
Control Program ◽  
Critical Issue ◽  
Low Noise ◽  
Measuring System ◽  
Constant Current ◽  
Constant Current Source ◽  
Detection Technology

According to the critical issue of accurate measurement of small resistance in the field of electronic measurement, the micro-ohm resistance measurement system is designed based on LabVIEW. It consists of two parts: hardware and software. The hardware is composed of AC constant current source, reference signal source, low noise amplifier, data acquisition card, computer etc.; The software consists of man-machine interface program, measure and control program and data processing program. The system based on virtual instrument cross-correlation detection technology achieves the effective measurement of micro-ohm resistance. It is an automatic measuring system with a flexible and convenient programming, simple and accurate measurement, high resolution and stable performance.

Design of DFB Laser Drive and Temperature Control Circuit in TDLAS Gas Concentration Detection

2020 ◽  
Author(s):  
Haoqing Yang ◽  
Xiongzhu Bu ◽  
Yihan Cao ◽  
Yang Song
Keyword(s):  
Temperature Control ◽  
Detection System ◽  
Current Source ◽  
Sine Wave ◽  
Control Circuit ◽  
Constant Current ◽  
Temperature Control System ◽  
Constant Current Source ◽  
Dfb Laser ◽  
On Chip

Abstract In order to satisfy the requirements of TDLAS gas measurement, the DFB laser drive and temperature control system is designed with taking STM32F103RCT6 as the main control chip, including sine wave and sawtooth signal generation circuit, temperature acquisition circuit and temperature control circuit, etc. The sine wave and the sawtooth wave signal are respectively generated by using the DDS chip and the STM32 on-chip DAC, and the two are superimposed to control the constant current source to drive the laser. At the same time, the internal temperature of the laser is collected and controlled. The DFB laser with a center wavelength of 1653.7 nm is used to verify the CH4. The experiment proves that the system can generate stable laser driving signals and achieve precise temperature control. The temperature control accuracy can reach ±0.013 °C. The design satisfies the requirements of TDLAS gas detection system for laser driving and temperature control.

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