Multi-chain time interval measurement method utilizing the dedicated carry chain of FPGA

Guo, Shuai; Wang, Yinan; Li, Nan; Diao, Jietao; Chen, Luo

doi:10.1109/iceiec.2017.8076612

Cited by 4 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: The Implementation Of the Carry Delay Chainmentioning

confidence: 99%

“…This article uses a Xilinx Kintex-7 series FPGA to implement the carry delay chain, whose model is XC7K325TFFG676-2. The dedicated carry chain primitive CARRY4 [19], provided by Xilinx, is used to instantiate the carry delay chain without customizing the IP cores, whose structure is shown in Figure 4. By recording the signal at the tap of the carry delay chain, the actual number of delay units passed by the external trigger signal can be obtained.…”

Section: The Implementation Of the Carry Delay Chainmentioning

confidence: 99%

See 1 more Smart Citation

A Picosecond Delay Generator Optimized by Layout and Routing Based on FPGA

Zhu

Tang

et al. 2023

Sensors

View full text Add to dashboard Cite

A delay generator is a timing control device that can generate a delay for the input signal according to the actual requirements. A delay generator with a combination of rough delay and precise delay is implemented on a Xilinx Kintex-7 series FPGA with a design scheme based on carry delay chain. The delay generator uses the delay time parameters sent by the upper monitor to work and to reflect the current working state to the upper monitor. In this article, a theoretical model of the delay generator is designed, and a delay compensation scheme is proposed to make the working state of the theoretical model closer to the actual circuit. Through simulation experiments, the time resolution of the delay generator is 54 ps, and the time accuracy is less than 50 ps. The delay scheme adopted in this article is highly scalable, and the time resolution and time accuracy can be further improved. Finally, a theoretical model of the delay generator with relatively high time resolution is implemented through low resource occupancy rate and little workload.

show abstract

Section: The Implementation Of the Carry Delay Chainmentioning

confidence: 99%

Section: The Implementation Of the Carry Delay Chainmentioning

confidence: 99%

A Picosecond Delay Generator Optimized by Layout and Routing Based on FPGA

Zhu

Tang

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…But the detection of the synchronous signal makes the measurement process hard to track the change of frequency in time, resulting in the discontinuity of the Larmor frequency output. Besides, Ge et al [18,19] proposed the delay chain interpolation method and Torres et al [20,21] used the time-to-digital (TDC) converter device to compensate the measurement error by using delay line technique. However, the delay line is easily affected by the temperature and power supply voltage, and the measured value will have a drift over time [22].…”

Section: Jinst 16 P06001mentioning

confidence: 99%

A high-accuracy and non-intermittent frequency measurement method for Larmor signal of optically pumped cesium magnetometer

Dong¹,

Xue²,

Luo³

et al. 2021

J. Inst.

View full text Add to dashboard Cite

The optically pumped cesium magnetometer is a quantum magnetometer based on the Zeeman effect. The frequency of the output Larmor signal is proportional to the magnetic field intensity. Therefore, improving the measurement accuracy of the Larmor frequency can make the magnetic field measurement more accurate. However, the Larmor signal is easily coupled with various randomly distributed noises, which will generate an unavoidable trigger error. To address the above problem, we propose a multi-gate and equal-precision fusion method. In this method, the trigger error is averaged into the count of each small gate through the multi-gate structure to improve the frequency measurement accuracy and the continuous sampling performance. We implemented this method on the FPGA and conducted indoor and outdoor experiments. The experimental results show that this method not only improves the measurement accuracy by three times of the traditional method, but also enhances the stability and noise suppression ability of the system, and can provide technical and instrumental support for magnetic field measurement projects.

show abstract

Data sharing method of power distribution and consumption network based on multi-chain

Zou

Chen

2019

2019 IEEE 3rd Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC)

View full text Add to dashboard Cite

Multi-chain time interval measurement method utilizing the dedicated carry chain of FPGA

Cited by 4 publications

References 7 publications

A Picosecond Delay Generator Optimized by Layout and Routing Based on FPGA

A Picosecond Delay Generator Optimized by Layout and Routing Based on FPGA

A high-accuracy and non-intermittent frequency measurement method for Larmor signal of optically pumped cesium magnetometer

Data sharing method of power distribution and consumption network based on multi-chain

Contact Info

Product

Resources

About