Raspberry Pi Min-Grant project - User contributions [en]

Instrumentation

2015-07-13T20:42:36Z

Ammuhia:

'''<span style="font-size:large;">Instrumentation</span>'''<p style="text-align: justify;">This course is taught in the third year of the electrical engineering curriculum. The course mainly deals with transducers for non-electrical quantities and their application to measurement of primary variables. Other areas covered in this course include signal conditioning, remote sensing techniques, microprocessor applications in instrumentation, noise and interference reduction, data storage, recording and display systems. </p><p style="text-align: justify;">We aim to develop a laboratory exercise that will introduce the students to signal conditioning and remote sensing. Remote sensing is important in instrumentation as it enables collection of data from measurement points at inconvenient locations.</p><p style="text-align: justify;">In this lab, the students will use a strain gauge to measure forces and transmit data to a different location via a wireless module. The Raspberry Pi will receive the data, perform signal conditioning and display the measurements.</p>
Two labs are under development as follows

<span style="font-size:larger;">'''Analog to Digital Conversion'''</span>
<p style="text-align: justify;">Most of signals from sensros are analogue in form. Raspberry Pi being a microprocessor based systems handles only digital signals. It has no inbuild analogue to digital             converter. This necessitates for development of an analogue to digital converter in instrumentation.</p><p style="text-align: justify;">MCP3008 analogue to digital converter chip is used in this work. It is a 10 bit, 8 channel IC as shown in the schematic. A variable resistor is used as the source of the analogue signal and is connected to 5 V source. The analogue input (0 to 5 V) is fed to one of the 8 channels of the MCP3008. Other connections to be made are described in the lab manual  [[Media:adc.pdf|(see pdf) provided]] for this lab.</p><p style="text-align: justify;">By adjusting the variable resistor, different values of analog voltages are used for testing the converter. The output (digital equivalent in decimal form) is displayed on the monitor</p>
The setup and sample results for this lab are shown below

[[File:ADC setup.jpg|x215px|ADC setup]]  [[File:Adcresult1.jpg|x215px|ADC sample result 1]]  [[File:Adcresult2.jpg|x215px|ADC sample result 2]]
<br/><div><span style="font-size:larger;">'''Real-time Remote Force Measurement and Recording'''</span></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">Telemetry is important in instrumentation as it enables collection of data from several measurement points at inconvenient locations or inaccessible areas transmit that data to a convenient location and present the several individual measurements in a usable form.</span></span><br/><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The stain gauge on the principle that a resistance of a wire of a semiconductor is changed by elongation or compression due to externally applied stress. It is commonly used in the measurement of force , torque and displacement. The output signal of the strain gauge requires amplification and AD620 (operational amplifier) chip has been used for this purpose.</span></span><br/><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">After amplification, the signal is converted to digital form using similar procedure in lab 1 described above.  WiFi network is used for transmission of the digital output from the remote location to the central control room. At the receiver side, data is first displayed on the monitor for purpose of real time monitoring. Its later stored in a database developed using mySQL.</span></span><br/><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The procedure to be used is detailed in the lab manual [[:media:instrumentation_manual|(see pdf)]] provided for this lab. Two weights (0.5 kg and 0.25 kg) are used for testing the system. The setup and sample results are shown below</span></span><br/><br/></div><br/><br/>[[File:Inst setup.jpg|x215px|Inst setup.jpg]]            [[File:Halfkg.jpg|x215px|Half kg weight]]           [[File:Halfres.jpg|x215px|Half kg weight results]]<br/><div style="text-align: justify;"><br/><br/></div><br/><div><br/><br/></div><br/><div><br/><br/></div><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

Instrumentation

2015-07-13T20:41:24Z

Ammuhia:

'''<span style="font-size:large;">Instrumentation</span>'''<p style="text-align: justify;">This course is taught in the third year of the electrical engineering curriculum. The course mainly deals with transducers for non-electrical quantities and their application to measurement of primary variables. Other areas covered in this course include signal conditioning, remote sensing techniques, microprocessor applications in instrumentation, noise and interference reduction, data storage, recording and display systems. </p><p style="text-align: justify;">We aim to develop a laboratory exercise that will introduce the students to signal conditioning and remote sensing. Remote sensing is important in instrumentation as it enables collection of data from measurement points at inconvenient locations.</p><p style="text-align: justify;">In this lab, the students will use a strain gauge to measure forces and transmit data to a different location via a wireless module. The Raspberry Pi will receive the data, perform signal conditioning and display the measurements.</p>
Two labs are under development as follows

<span style="font-size:larger;"</span>

<span style="font-size:larger;">'''Analog to Digital Conversion'''</span>
<p style="text-align: justify;">Most of signals from sensros are analogue in form. Raspberry Pi being a microprocessor based systems handles only digital signals. It has no inbuild analogue to digital             converter. This necessitates for development of an analogue to digital converter in instrumentation.</p><p style="text-align: justify;">MCP3008 analogue to digital converter chip is used in this work. It is a 10 bit, 8 channel IC as shown in the schematic. A variable resistor is used as the source of the analogue signal and is connected to 5 V source. The analogue input (0 to 5 V) is fed to one of the 8 channels of the MCP3008. Other connections to be made are described in the lab manual  [[Media:adc.pdf|(see pdf) provided]] for this lab.</p><p style="text-align: justify;">By adjusting the variable resistor, different values of analog voltages are used for testing the converter. The output (digital equivalent in decimal form) is displayed on the monitor</p>
The setup and sample results for this lab are shown below

[[File:ADC setup.jpg|x215px|ADC setup]]  [[File:Adcresult1.jpg|x215px|ADC sample result 1]]  [[File:Adcresult2.jpg|x215px|ADC sample result 2]]
<br/><div><span style="font-size:larger;">'''Real-time Remote Force Measurement and Recording'''</span></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">Telemetry is important in instrumentation as it enables collection of data from several measurement points at inconvenient locations or inaccessible areas transmit that data to a convenient location and present the several individual measurements in a usable form.</span></span><br/><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The stain gauge on the principle that a resistance of a wire of a semiconductor is changed by elongation or compression due to externally applied stress. It is commonly used in the measurement of force , torque and displacement. The output signal of the strain gauge requires amplification and AD620 (operational amplifier) chip has been used for this purpose.</span></span><br/><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">After amplification, the signal is converted to digital form using similar procedure in lab 1 described above.  WiFi network is used for transmission of the digital output from the remote location to the central control room. At the receiver side, data is first displayed on the monitor for purpose of real time monitoring. Its later stored in a database developed using mySQL.</span></span><br/><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The procedure to be used is detailed in the lab manual [[:media:instrumentation_manual|(see pdf)]] provided for this lab. Two weights (0.5 kg and 0.25 kg) are used for testing the system. The setup and sample results are shown below</span></span><br/><br/></div><br/><br/>[[File:Inst setup.jpg|x215px|Inst setup.jpg]]            [[File:Halfkg.jpg|x215px|Half kg weight]]           [[File:Halfres.jpg|x215px|Half kg weight results]]<br/><div style="text-align: justify;"><br/><br/></div><br/><div><br/><br/></div><br/><div><br/><br/></div><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

Instrumentation

2015-07-13T20:40:08Z

Ammuhia:

'''<span style="font-size:large;">Instrumentation</span>'''<p style="text-align: justify;">This course is taught in the third year of the electrical engineering curriculum. The course mainly deals with transducers for non-electrical quantities and their application to measurement of primary variables. Other areas covered in this course include signal conditioning, remote sensing techniques, microprocessor applications in instrumentation, noise and interference reduction, data storage, recording and display systems. </p><p style="text-align: justify;">We aim to develop a laboratory exercise that will introduce the students to signal conditioning and remote sensing. Remote sensing is important in instrumentation as it enables collection of data from measurement points at inconvenient locations.</p><p style="text-align: justify;">In this lab, the students will use a strain gauge to measure forces and transmit data to a different location via a wireless module. The Raspberry Pi will receive the data, perform signal conditioning and display the measurements.</p>
Two labs are under development as follows

<span style="font-size:larger;"</span>

<span style="font-size:larger;">'''Analog to Digital Conversion'''</span>
<p style="text-align: justify;">Most of signals from sensros are analogue in form. Raspberry Pi being a microprocessor based systems handles only digital signals. It has no inbuild analogue to digital             converter. This necessitates for development of an analogue to digital converter in instrumentation.</p><p style="text-align: justify;">MCP3008 analogue to digital converter chip is used in this work. It is a 10 bit, 8 channel IC as shown in the schematic. A variable resistor is used as the source of the analogue signal and is connected to 5 V source. The analogue input (0 to 5 V) is fed to one of the 8 channels of the MCP3008. Other connections to be made are described in the lab manual  [[Media:adc.pdf|(see pdf) provided]] for this lab.</p><p style="text-align: justify;">By adjusting the variable resistor, different values of analog voltages are used for testing the converter. The output (digital equivalent in decimal form) is displayed on the monitor</p>
The setup and sample results for this lab are shown below

[[File:ADC setup.jpg|x215px|ADC setup]]  [[File:Adcresult1.jpg|x215px|ADC sample result 1]]  [[File:Adcresult2.jpg|x215px|ADC sample result 2]]

[[File:ADC setup.jpg|left|ADC setup]] [[File:Adcresult1.jpg|x215px|Sample results]] [[File:Adcresult2.jpg|x215px|Sample result]]
<br/><br/><div><span style="font-size:larger;"</div><div><span style="font-size:larger;">'''Real-time Remote Force Measurement and Recording'''</span></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">Telemetry is important in instrumentation as it enables collection of data from several measurement points at inconvenient locations or inaccessible areas transmit that data to a convenient location and present the several individual measurements in a usable form.</span></span><br/><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The stain gauge on the principle that a resistance of a wire of a semiconductor is changed by elongation or compression due to externally applied stress. It is commonly used in the measurement of force , torque and displacement. The output signal of the strain gauge requires amplification and AD620 (operational amplifier) chip has been used for this purpose.</span></span><br/><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">After amplification, the signal is converted to digital form using similar procedure in lab 1 described above.  WiFi network is used for transmission of the digital output from the remote location to the central control room. At the receiver side, data is first displayed on the monitor for purpose of real time monitoring. Its later stored in a database developed using mySQL.</span></span><br/><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The procedure to be used is detailed in the lab manual [[:media:instrumentation_manual|(see pdf)]] provided for this lab. Two weights (0.5 kg and 0.25 kg) are used for testing the system. The setup and sample results are shown below</span></span><br/><br/></div><br/><br/>[[File:Inst setup.jpg|x215px|Inst setup.jpg]]            [[File:Halfkg.jpg|x215px|Half kg weight]]           [[File:Halfres.jpg|x215px|Half kg weight results]]<br/><div style="text-align: justify;"><br/><br/></div><br/><div><br/><br/></div><br/><div><br/><br/></div><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

Instrumentation

2015-07-13T20:37:56Z

Ammuhia:

'''<span style="font-size:large;">Instrumentation</span>'''<p style="text-align: justify;">This course is taught in the third year of the electrical engineering curriculum. The course mainly deals with transducers for non-electrical quantities and their application to measurement of primary variables. Other areas covered in this course include signal conditioning, remote sensing techniques, microprocessor applications in instrumentation, noise and interference reduction, data storage, recording and display systems. </p><p style="text-align: justify;">We aim to develop a laboratory exercise that will introduce the students to signal conditioning and remote sensing. Remote sensing is important in instrumentation as it enables collection of data from measurement points at inconvenient locations.</p><p style="text-align: justify;">In this lab, the students will use a strain gauge to measure forces and transmit data to a different location via a wireless module. The Raspberry Pi will receive the data, perform signal conditioning and display the measurements.</p>
Two labs are under development as follows

<span style="font-size:larger;"</span>

<span style="font-size:larger;">'''Analog to Digital Conversion'''</span>
<p style="text-align: justify;">Most of signals from sensros are analogue in form. Raspberry Pi being a microprocessor based systems handles only digital signals. It has no inbuild analogue to digital             converter. This necessitates for development of an analogue to digital converter in instrumentation.</p><p style="text-align: justify;">MCP3008 analogue to digital converter chip is used in this work. It is a 10 bit, 8 channel IC as shown in the schematic. A variable resistor is used as the source of the analogue signal and is connected to 5 V source. The analogue input (0 to 5 V) is fed to one of the 8 channels of the MCP3008. Other connections to be made are described in the lab manual  [[Media:adc.pdf|(see pdf) provided]] for this lab.</p><p style="text-align: justify;">By adjusting the variable resistor, different values of analog voltages are used for testing the converter. The output (digital equivalent in decimal form) is displayed on the monitor</p>
The setup and sample results for this lab are shown below

[[File:ADC setup.jpg|left|ADC setup]] [[File:Adcresult1.jpg|x215px|Sample results]] [[File:Adcresult2.jpg|x215px|Sample result]]
<br/><br/><div><span style="font-size:larger;"</div><div><span style="font-size:larger;">'''Real-time Remote Force Measurement and Recording'''</span></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">Telemetry is important in instrumentation as it enables collection of data from several measurement points at inconvenient locations or inaccessible areas transmit that data to a convenient location and present the several individual measurements in a usable form.</span></span><br/><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;"></span></span><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The stain gauge on the principle that a resistance of a wire of a semiconductor is changed by elongation or compression due to externally applied stress. It is commonly used in the measurement of force , torque and displacement. The output signal of the strain gauge requires amplification and AD620 (operational amplifier) chip has been used for this purpose.</span></span><br/><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;"></span></span><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">After amplification, the signal is converted to digital form using similar procedure in lab 1 described above.  WiFi network is used for transmission of the digital output from the remote location to the central control room. At the receiver side, data is first displayed on the monitor for purpose of real time monitoring. Its later stored in a database developed using mySQL.</span></span><br/><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;"></span></span><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The procedure to be used is detailed in the lab manual [[:media:instrumentation_manual|(see pdf)]] provided for this lab. Two weights (0.5 kg and 0.25 kg) are used for testing the system. The setup and sample results are shown below</span></span><br/><br/></div><br/><br/>[[File:Inst setup.jpg|x215px|Inst setup.jpg]]            [[File:Halfkg.jpg|x215px|Half kg weight]]           [[File:Halfres.jpg|x215px|Half kg weight results]]<br/><div style="text-align: justify;"><br/><br/></div><br/><div><br/><br/></div><br/><div><br/><br/></div><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

Instrumentation

2015-07-13T20:35:11Z

Ammuhia:

'''<span style="font-size:large;">Instrumentation</span>'''<p style="text-align: justify;">This course is taught in the third year of the electrical engineering curriculum. The course mainly deals with transducers for non-electrical quantities and their application to measurement of primary variables. Other areas covered in this course include signal conditioning, remote sensing techniques, microprocessor applications in instrumentation, noise and interference reduction, data storage, recording and display systems. </p><p style="text-align: justify;">We aim to develop a laboratory exercise that will introduce the students to signal conditioning and remote sensing. Remote sensing is important in instrumentation as it enables collection of data from measurement points at inconvenient locations.</p><p style="text-align: justify;">In this lab, the students will use a strain gauge to measure forces and transmit data to a different location via a wireless module. The Raspberry Pi will receive the data, perform signal conditioning and display the measurements.</p> Two labs are under development as follows <span style="font-size:larger;">'''Analog to Digital Conversion'''</span><p style="text-align: justify;">Most of signals from sensros are analogue in form. Raspberry Pi being a microprocessor based systems handles only digital signals. It has no inbuild analogue to digital             converter. This necessitates for development of an analogue to digital converter in instrumentation.</p><p style="text-align: justify;">MCP3008 analogue to digital converter chip is used in this work. It is a 10 bit, 8 channel IC as shown in the schematic. A variable resistor is used as the source of the analogue signal and is connected to 5 V source. The analogue input (0 to 5 V) is fed to one of the 8 channels of the MCP3008. Other connections to be made are described in the lab manual  [[Media:adc.pdf|(see pdf) provided]] for this lab.</p><p style="text-align: justify;">By adjusting the variable resistor, different values of analog voltages are used for testing the converter. The output (digital equivalent in decimal form) is displayed on the monitor</p> The setup and sample results for this lab are shown below [[File:ADC setup.jpg|left|ADC setup]]<div>[[File:Adcresult1.jpg|x215px|Sample results]] [[File:Adcresult2.jpg|x215px|Sample result]]<br/><br/></div><br/><div><br/><br/></div><br/><div><br/><br/></div><br/><div><span style="font-size:larger;"</div><div><span style="font-size:larger;">'''Real-time Remote Force Measurement and Recording'''</span></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">Telemetry is important in instrumentation as it enables collection of data from several measurement points at inconvenient locations or inaccessible areas transmit that data to a convenient location and present the several individual measurements in a usable form.</span></span><br/><br/></div><br/><div style="text-align: justify;"><br/><br/></div><br/><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The stain gauge on the principle that a resistance of a wire of a semiconductor is changed by elongation or compression due to externally applied stress. It is commonly used in the measurement of force , torque and displacement. The output signal of the strain gauge requires amplification and AD620 (operational amplifier) chip has been used for this purpose.</span></span><br/><br/></div><br/><div style="text-align: justify;"><br/><br/></div><br/><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">After amplification, the signal is converted to digital form using similar procedure in lab 1 described above.  WiFi network is used for transmission of the digital output from the remote location to the central control room. At the receiver side, data is first displayed on the monitor for purpose of real time monitoring. Its later stored in a database developed using mySQL.</span></span><br/><br/></div><br/><div style="text-align: justify;"><br/><br/></div><br/><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The procedure to be used is detailed in the lab manual [[:media:instrumentation_manual|(see pdf)]] provided for this lab. Two weights (0.5 kg and 0.25 kg) are used for testing the system. The setup and sample results are shown below</span></span><br/><br/></div>[[File:Inst setup.jpg|x215px]] [[File:Halfkg.jpg|x215px|Half kg weight]]  [[File:Halfres.jpg|x215px|Half kg weight results]]<br/><div style="text-align: justify;"><br/><br/></div><br/><div><br/><br/></div><br/><div><br/><br/></div><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

File:Halfres.jpg

2015-07-13T20:31:56Z

Ammuhia: Half kilogram weight results

Half kilogram weight results

File:Halfkg.jpg

2015-07-13T20:30:46Z

Ammuhia: Half kilogram weight

Half kilogram weight

File:Inst setup.jpg

2015-07-13T20:28:47Z

Ammuhia: Instrumentation setup

Instrumentation setup

Instrumentation

2015-07-13T20:22:43Z

Ammuhia:

'''<span style="font-size:large;">Instrumentation</span>'''
<p style="text-align: justify;">This course is taught in the third year of the electrical engineering curriculum. The course mainly deals with transducers for non-electrical quantities and their application to measurement of primary variables. Other areas covered in this course include signal conditioning, remote sensing techniques, microprocessor applications in instrumentation, noise and interference reduction, data storage, recording and display systems. </p><p style="text-align: justify;">We aim to develop a laboratory exercise that will introduce the students to signal conditioning and remote sensing. Remote sensing is important in instrumentation as it enables collection of data from measurement points at inconvenient locations.</p><p style="text-align: justify;">In this lab, the students will use a strain gauge to measure forces and transmit data to a different location via a wireless module. The Raspberry Pi will receive the data, perform signal conditioning and display the measurements.</p>
Two labs are under development as follows

<span style="font-size:larger;">'''Analog to Digital Conversion'''</span>
<p style="text-align: justify;">Most of signals from sensros are analogue in form. Raspberry Pi being a microprocessor based systems handles only digital signals. It has no inbuild analogue to digital             converter. This necessitates for development of an analogue to digital converter in instrumentation.</p><p style="text-align: justify;">MCP3008 analogue to digital converter chip is used in this work. It is a 10 bit, 8 channel IC as shown in the schematic. A variable resistor is used as the source of the analogue signal and is connected to 5 V source. The analogue input (0 to 5 V) is fed to one of the 8 channels of the MCP3008. Other connections to be made are described in the lab manual  [[Media:adc.pdf|(see pdf) provided]] for this lab.</p><p style="text-align: justify;">By adjusting the variable resistor, different values of analog voltages are used for testing the converter. The output (digital equivalent in decimal form) is displayed on the monitor</p>
The setup and sample results for this lab are shown below

[[File:ADC setup.jpg|left|ADC setup]]
<div>[[File:Adcresult1.jpg|x215px|Sample results]] [[File:Adcresult2.jpg|x215px|Sample result]]<br/></div><div><br/></div><div><br/></div><div><span style="font-size:larger;"</span><br/></div><div><span style="font-size:larger;">'''Real-time Remote Force Measurement and Recording'''</span></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">Telemetry is important in instrumentation as it enables collection of data from several measurement points at inconvenient locations or inaccessible areas transmit that data to a convenient location and present the several individual measurements in a usable form.</span></span><br/></div><div style="text-align: justify;"><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The stain gauge on the principle that a resistance of a wire of a semiconductor is changed by elongation or compression due to externally applied stress. It is commonly used in the measurement of force , torque and displacement. The output signal of the strain gauge requires amplification and AD620 (operational amplifier) chip has been used for this purpose.</span></span><br/></div><div style="text-align: justify;"><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">After amplification, the signal is converted to digital form using similar procedure in lab 1 described above.  WiFi network is used for transmission of the digital output from the remote location to the central control room. At the receiver side, data is first displayed on the monitor for purpose of real time monitoring. Its later stored in a database developed using mySQL.</span></span><br/></div><div style="text-align: justify;"><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The procedure to be used is detailed in the lab manual [[:media:instrumentation_manual|(see pdf)]] provided for this lab. Two weights (0.5 kg and 0.25 kg) are used for testing the system. The setup and sample results are shown below</span></span><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;"></span></span><br/></div><div><br/></div><div><br/></div>

File:Instrumentation manual.pdf

2015-07-13T20:19:56Z

Ammuhia: Instrumentation Lab 2 manual

Instrumentation Lab 2 manual

Instrumentation

2015-07-13T20:08:58Z

Ammuhia:

'''<span style="font-size:large;">Instrumentation</span>'''
<p style="text-align: justify;">This course is taught in the third year of the electrical engineering curriculum. The course mainly deals with transducers for non-electrical quantities and their application to measurement of primary variables. Other areas covered in this course include signal conditioning, remote sensing techniques, microprocessor applications in instrumentation, noise and interference reduction, data storage, recording and display systems. </p><p style="text-align: justify;">We aim to develop a laboratory exercise that will introduce the students to signal conditioning and remote sensing. Remote sensing is important in instrumentation as it enables collection of data from measurement points at inconvenient locations.</p><p style="text-align: justify;">In this lab, the students will use a strain gauge to measure forces and transmit data to a different location via a wireless module. The Raspberry Pi will receive the data, perform signal conditioning and display the measurements.</p>
Two labs are under development as follows

<span style="font-size:larger;">'''Analog to Digital Conversion'''</span>
<p style="text-align: justify;">Most of signals from sensros are analogue in form. Raspberry Pi being a microprocessor based systems handles only digital signals. It has no inbuild analogue to digital             converter. This necessitates for development of an analogue to digital converter in instrumentation.</p><p style="text-align: justify;">MCP3008 analogue to digital converter chip is used in this work. It is a 10 bit, 8 channel IC as shown in the schematic. A variable resistor is used as the source of the analogue signal and is connected to 5 V source. The analogue input (0 to 5 V) is fed to one of the 8 channels of the MCP3008. Other connections to be made are described in the lab manual  [[Media:adc.pdf|(see pdf) provided]] for this lab.</p><p style="text-align: justify;">By adjusting the variable resistor, different values of analog voltages are used for testing the converter. The output (digital equivalent in decimal form) is displayed on the monitor</p>
The setup and sample results for this lab are shown below

[[File:ADC setup.jpg|left|ADC setup]]
<div>[[File:Adcresult1.jpg|x215px|Sample results]] [[File:Adcresult2.jpg|x215px|Sample result]]<br/></div><div><br/></div><div><br/></div><div><span style="font-size:larger;"</span><br/></div><div><span style="font-size:larger;">'''Real-time Remote Force Measurement and Recording'''</span></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">Telemetry is important in instrumentation as it enables collection of data from several measurement points at inconvenient locations or inaccessible areas transmit that data to a convenient location and present the several individual measurements in a usable form.<br/></span></span></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;"><br/></span></span></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The stain gauge on the principle that a resistance of a wire of a semiconductor is changed by elongation or compression due to externally applied stress. It is commonly used in the measurement of force , torque and displacement. The output signal of the strain gauge requires amplification and AD620 (operational amplifier) chip has been used for this purpose.</span></span><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;"></span></span><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">After amplification, the signal is converted to digital form using similar procedure in lab 1 described above.  WiFi network is used for transmission of the digital output from the remote location to the central control room. At the receiver side, data is first displayed on the monitor for purpose of real time monitoring. Its later stored in a database developed using mySQL.</span></span><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;"></span></span><br/></div><div style="text-align: justify;"><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;">The procedure to be used is detailed in the lab manual (see pdf) provided for this lab.</span></span><br/></div><div><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;"></span></span><br/></div><div><span style="font-size:larger;"><span style="font-family:times new roman,times,serif;"></span></span><br/></div>

Instrumentation

2015-07-13T19:55:17Z

Ammuhia:

Instrumentation

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Ammuhia:

Instrumentation

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Ammuhia:

File:Adcresult1.jpg

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Ammuhia: Ammuhia uploaded a new version of File:Adcresult1.jpg

Results for ADC

Instrumentation

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Ammuhia:

Instrumentation

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Ammuhia:

File:Adcresult2.jpg

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Ammuhia: ADC sample result 2

ADC sample result 2

File:Adcresult1.jpg

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Ammuhia: Ammuhia uploaded a new version of File:Adcresult1.jpg

Results for ADC

File:Adcresult1.jpg

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Ammuhia: Ammuhia uploaded a new version of File:Adcresult1.jpg

Results for ADC

Instrumentation

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Ammuhia:

Instrumentation

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Ammuhia:

'''<span style="font-size:large;">Instrumentation</span>'''

This course is taught in the third year of the electrical engineering curriculum. The course mainly deals with transducers for non-electrical quantities and their application to measurement of primary variables. Other areas covered in this course include signal conditioning, remote sensing techniques, microprocessor applications in instrumentation, noise and interference reduction, data storage, recording and display systems. 

We aim to develop a laboratory exercise that will introduce the students to signal conditioning and remote sensing. Remote sensing is important in instrumentation as it enables collection of data from measurement points at inconvenient locations.

In this lab, the students will use a strain gauge to measure forces and transmit data to a different location via a wireless module. The Raspberry Pi will receive the data, perform signal conditioning and display the measurements.

Two labs are under development as follows

#Analog to Digital Conversion

          Most of signals from sensros are analogue in form. Raspberry Pi being a microprocessor based systems handles only digital signals. It has no inbuild analogue to digital                 converter. This necessitates for development of an analogue to digital converter in instrumentation.

         MCP3008 analogue to digital converter chip is used in this work. It is a 10 bit, 8 channel IC as shown in the schematic[[File:Mcp.png|right|RTENOTITLE]]

         The setup is as shown below [[File:ADC setup.jpg]]
<div><br/></div>

File:Adcresult1.jpg

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Ammuhia: Results for ADC

Results for ADC

File:ADC setup.jpg

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Ammuhia: Ammuhia uploaded a new version of File:ADC setup.jpg

Setup for Analogue to Digital Converter

Instrumentation

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Ammuhia:

'''<span style="font-size:large;">Instrumentation</span>'''

This course is taught in the third year of the electrical engineering curriculum. The course mainly deals with transducers for non-electrical quantities and their application to measurement of primary variables. Other areas covered in this course include signal conditioning, remote sensing techniques, microprocessor applications in instrumentation, noise and interference reduction, data storage, recording and display systems. 

We aim to develop a laboratory exercise that will introduce the students to signal conditioning and remote sensing. Remote sensing is important in instrumentation as it enables collection of data from measurement points at inconvenient locations.

In this lab, the students will use a strain gauge to measure forces and transmit data to a different location via a wireless module. The Raspberry Pi will receive the data, perform signal conditioning and display the measurements.

Two labs are under development as follows

#Analog to Digital Conversion

          Most of signals from sensros are analogue in form. Raspberry Pi being a microprocessor based systems handles only digital signals. It has no inbuild analogue to digital                 converter. This necessitates for development of an analogue to digital converter in instrumentation.

         MCP3008 analogue to digital converter chip is used in this work. It is a 10 bit, 8 channel IC as shown in the schematic[[File:Mcp.png|right|RTENOTITLE]]

[[File:ADC setup.jpg|right|upright|Analogue to Digital Converter setup]]

Instrumentation

2015-07-13T18:38:05Z

Ammuhia:

File:ADC setup.jpg

2015-07-13T18:36:16Z

Ammuhia: Setup for Analogue to Digital Converter

Setup for Analogue to Digital Converter

Instrumentation

2015-07-13T18:17:53Z

Ammuhia:

File:Mcp.png

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Ammuhia: MCP3008 schematic

MCP3008 schematic

File:Adc.pdf

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Ammuhia:

Instrumentation

2015-07-13T17:43:42Z

Ammuhia: