scholarly journals Real Time Monitoring of Diesel Engine Injector Waveforms for Accurate Fuel Metering and Control

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Q. R. Farooqi ◽  
B. Snyder ◽  
S. Anwar
Keyword(s):  
Real Time ◽  
High Speed ◽  
Direct Memory Access ◽  
Operating Conditions ◽  
Start Of Injection ◽  
Field Programmable ◽  
High Speed Data Acquisition ◽  
Correction Table ◽  
High Speed Data ◽  
Injector Pulse

This paper presents the development, experimentation, and validation of a reliable and robust system to monitor the injector pulse generated by an engine control module (ECM) which can easily be calibrated for different engine platforms and then feedback the corresponding fueling quantity to the real-time computer in a closed-loop controller in the loop (CIL) bench in order to achieve optimal fueling. This research utilizes field programmable gate arrays (FPGA) and direct memory access (DMA) transfer capability to achieve high speed data acquisition and delivery. This work is conducted in two stages: the first stage is to study the variability involved in the injected fueling quantity from pulse to pulse, from injector to injector, between real injector stators and inductor load cells, and over different operating conditions. Different thresholds have been used to find out the best start of injection (SOI) threshold and the end of injection (EOI) threshold that capture the injector “on-time” with best reliability and accuracy. Second stage involves development of a system that interprets the injector pulse into fueling quantity. The system can easily be calibrated for various platforms. Finally, the use of resulting correction table has been observed to capture the fueling quantity with highest accuracy.

Diesel Engine Injector Waveform Monitoring in Real-Time for Fuel Efficiency

2012 ◽  
Author(s):  
Q. R. Farooqi ◽  
S. Anwar ◽  
B. Snyder
Keyword(s):  
Real Time ◽  
High Speed ◽  
Fuel Efficiency ◽  
Direct Memory Access ◽  
Operating Conditions ◽  
Start Of Injection ◽  
Field Programmable ◽  
High Speed Data Acquisition ◽  
Correction Table ◽  
Injector Pulse

This paper presents the development, experimentation and validation of a reliable and robust system, which can be easily calibrated for different engine platforms, to monitor the injector pulse generated by an Engine Control Module (ECM) and feedback the corresponding fueling quantity to the real-time computer in a closed-loop Controller in the loop (CIL) bench in order to achieve optimal fueling. This research utilized Field Programmable Gate Arrays (FPGA) and Direct Memory Access (DMA) transfer capability to achieve high speed data acquisition and delivery. The research is conducted in two stages, first stage was to study the variability involved in the injected fueling quantity from pulse to pulse, from injector to injector, between real injector stators and inductor load cells, over different operating conditions. Different thresholds were experimented to find out the best start of injection (SOI) threshold and the end of injection (EOI) threshold that captured the injector “on-time” with best reliability and accuracy. Second stage involved development of a system that interprets the injector pulse into fueling quantity; the system can be easily calibrated to be used over various platforms. Finally, the use of resulting correction table was found to capture the fueling quantity with best accuracy.

Design and Test of High Speed Digitization Sampling Circuit Based on FPGA

2013 ◽  
Vol 482 ◽  
pp. 386-389
Author(s):  
Peng Qin ◽  
Hao Lu ◽  
Zhi Ye Jiang ◽  
Jin Liang Bai ◽  
Lu Gao ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Circuit Design ◽  
Field Programmable Gate Array ◽  
High Speed ◽  
Engineering Practice ◽  
Excellent Performance ◽  
Field Programmable ◽  
High Speed Data Acquisition ◽  
High Speed Data ◽  
Data Acquisition Program

To sample wideband IF signal with large amounts of data, a high-speed data acquisition program is presented. The program focus on circuit design, issues that need attention, and high-speed sampling signal deceleration strategy. The 2.4GHz rate sampling data acquisition, reception and demux are completed with ADC083000 and Field-Programmable Gate Array (FPGA). At last, a result of sampling with the converter is offered by chipscope software. The result verified ADC083000 has an excellent performance with more than 6.5 bit ENOB and good phase coherence. In engineering practice, the design has been used and has good performance.

Software Design Based on PLD High-Speed Data Acquisition System

2013 ◽  
Vol 798-799 ◽  
pp. 647-650
Author(s):  
Geng Zhang ◽  
Hao Xu
Keyword(s):  
Data Acquisition ◽  
Real Time ◽  
Software Design ◽  
High Speed ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Data Sampling ◽  
Logic Function ◽  
High Speed Data Acquisition ◽  
High Speed Data

Data collection in the important position of modern industrial production and scientific research is increasingly outstanding, as well as the real-time collection, real-time transmission and real-time processing of high speed data acquisition requirements are constantly improve. In addition, for different occasions, the data acquisition system of data sampling parameters are different. PLD as a universal integrated circuit, its logic function according to user's programming on the device, this paper introduces the high-speed data acquisition system based on PLD, mainly expounds the software design of the system, this paper introduces a simple PLD system, using FPGA as the data acquisition chip, the main measure the infrared remote control code acquisition, based on EDA technology to design a core, using DMA access to data, to achieve high-speed system requirements.

Realization of Real-Time Transmission of Spectrum Data Based on the uPP Interface of OMAPL138

2014 ◽  
Vol 577 ◽  
pp. 640-643 ◽  
Author(s):  
Jie Feng Wang ◽  
Dong Hui Huang ◽  
Chao Hai Li
Keyword(s):  
Real Time ◽  
High Speed ◽  
Direct Memory Access ◽  
Parallel Port ◽  
The Real ◽  
Spectrum Monitoring ◽  
Time Domain Data ◽  
Field Programmable ◽  
Real Time Transmission ◽  
Spectrum Data

This paper presents a high-speed and multi-thread-safe transmission based on the universal parallel port (uPP) of OMAPL138 and Field Programmable Gate Array (FPGA).With the aid of I/O module used with IOM mini-drivers (GIO module) under DSP/BIOS and internal direct memory access (DMA), this system can obtain a high momentary speed at 300MB/s. This system is designed for the real-time transmission of spectrum data and raw time-domain data which are most important data for monitoring the wireless frequency resource. The real-time transmission of spectrum data has been applied in a spectrum monitoring receiver.

Data Acquisition System Based on uC/OS-III Embedded System

2012 ◽  
Vol 619 ◽  
pp. 85-89 ◽  
Author(s):  
Wen Hua Li ◽  
Jin Yu Zheng ◽  
Chen Yu
Keyword(s):  
Embedded System ◽  
Data Acquisition ◽  
Real Time ◽  
High Speed ◽  
Modular Design ◽  
Embedded Operating System ◽  
Collection System ◽  
High Speed Data Acquisition ◽  
High Speed Data ◽  
Design Ideas

This paper presents a data collection system based on C8051F040 processor and real-time embedded operating system uC/OS-III. The hardware part design, uC/OS-III transplant process and notes, system processes are discussed in detail. This system takes the modular design ideas and reasonable task-assigned strategy, make software is easy to code and modify, realizes real-time, high speed data acquisition.

scholarly journals The Design of High Speed Acquisition and Storage System Based on Labview

2018 ◽  
Vol 173 ◽  
pp. 02004
Author(s):  
Hwangfei Lew ◽  
Danjv Lv ◽  
Yan Zhang ◽  
Min Leed ◽  
Zhiyi Qin ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Real Time ◽  
High Speed ◽  
Storage System ◽  
Periodic Signal ◽  
Data Acquisition Card ◽  
High Speed Data Acquisition ◽  
High Speed Data ◽  
Upper Computer ◽  
And Storage

The design of high speed data acquisition and storage system is based on Labview. It can not only achieve high accuracy and high data rate but also use the software and hardware synchronization trigger to complete the multi-channel continuous real-time monitoring of the acquisition and storage periodic signal. Which is similar to the function of the oscilloscope. This system is based on high speed data acquisition card of NI company and Labview 2012 for PC software development platform. Data acquisition card is used to finish data acquisition of periodic signal through the serial port. It also collect data upload to upper computer. Upper computer collect data for storage display and analysis to realize the real-time monitor of multi-channel analog. The design of the sampling channel is 2, the sampling rate up to 200M/s, the sampling precision is 12 bits, and the sampling depth is 2000. Lots of verification prove that the design has good compatibility, performance and stability of the collection. Data error is negligible by analyzing the data collected. More importantly, the design can be as far as possible to restore the actual signal source data without distortion. This paper provides a portable design for high speed data acquisition, which can be widely applied in the engineering of modern test and measurement technology.

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