07-04-2011, 09:48 AM
PC based ECG monitoring system is designed to perform the same operation as ECG machine used in medical. This system has some hardware and software that helps to measure the electrical signal of human body.
This system play a major role in most of the developed countries where the same PC can be used for ECG scanning when ever required and some other time do other job too.
Our main objective is to produce the signal as per the ECG machine in a PC.
The hardware consists of sensor and ADC card .The sensor will sense the body signal with the help of connected lead. These signals are feed to the ADC card, which convert the analog signal to digital signal. These digital signals are available on the ISA slot of the PC motherboard. The developed software collects these available data from the ISA slot and plot the signals as required by the ECG on the PC monitor.
The software is written in C language, which collects the data from the ISA slot and Instructing to the computer hardware to generates three types of signals. They are ALE pulse, SOC pulse and EOC pulse. These three signals helps to set and get the data in the form of digital. Now the software will plot the signal accordingly on the monitor.
Setting the address 0x300 with the channel number to the ISA slot can generate ALE pulse and SOC pulse. Setting the address 0x300 with the channel number will generate EOC. The data will be latched and stored in the address 0x302, hence collected and stored in a variable. By taking that variable graph will be plot on the screen.
The application is flexible enough and can be modified in future for achieving better accuracy and to provide efficient result for use.
This system play a major role in most of the developed countries where the same PC can be used for ECG scanning when ever required and some other time do other job too.
Our main objective is to produce the signal as per the ECG machine in a PC.
The hardware consists of sensor and ADC card .The sensor will sense the body signal with the help of connected lead. These signals are feed to the ADC card, which convert the analog signal to digital signal. These digital signals are available on the ISA slot of the PC motherboard. The developed software collects these available data from the ISA slot and plot the signals as required by the ECG on the PC monitor.
The software is written in C language, which collects the data from the ISA slot and Instructing to the computer hardware to generates three types of signals. They are ALE pulse, SOC pulse and EOC pulse. These three signals helps to set and get the data in the form of digital. Now the software will plot the signal accordingly on the monitor.
Setting the address 0x300 with the channel number to the ISA slot can generate ALE pulse and SOC pulse. Setting the address 0x300 with the channel number will generate EOC. The data will be latched and stored in the address 0x302, hence collected and stored in a variable. By taking that variable graph will be plot on the screen.
The application is flexible enough and can be modified in future for achieving better accuracy and to provide efficient result for use.