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university:courses:electronics:electronics-lab-heartbeat [08 May 2017 16:33] – Antoniu Miclausuniversity:courses:electronics:electronics-lab-heartbeat [30 Jan 2023 09:19] (current) – [Preamplifier] Antoniu Miclaus
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-======Activity: Heartbeat Measurement with LED, Phototransistor, Operational Amplifiers and Filters ======+======Activity: Heartbeat Measurement Circuit======
  
 =====Objective===== =====Objective=====
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 =====Directions===== =====Directions=====
  
-On your solder-less breadboard construct the heartbeat measurement circuit (designed in ADIsim) as shown in Figure 1. +On your solder-less breadboard construct the heartbeat measurement circuit (designed in LTspice) as shown in Figure 1. 
  
-{{:university:courses:electronics:heartbeat-circuit.png|}}+{{ :university:courses:electronics:heartbeat_measurement.png?800 |}}
  
 <WRAP centeralign> Figure 1 Heartbeat Measurement Circuit </WRAP> <WRAP centeralign> Figure 1 Heartbeat Measurement Circuit </WRAP>
  
-Since the real circuit uses quad OP484FPZ from the ADALP2000 Analog Parts Kit, the schematic design was implemented with multiple OP184 Precision Rail-to-Rail Operational Amplifiers. They are dual supplied (± 5V) from the ADALM2000 module, operating on a range of 10V.+The LTspice simulation uses OP284s, included in the standard set of LTspice models. The actual circuit is constructed with the quad OP484FPZ from the ADALP2000 Analog Parts Kit, powered by ± 5V from the ADALM2000 module (a total supply voltage of 10V.)
  
 ====IR LED==== ====IR LED====
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 =====Simulation===== =====Simulation=====
  
-Considering the circuit designed in ADIsim, two types of simulation are made:+Considering the circuit designed in LTspice, two types of simulation are made:
   *Transient - Connect at the input of the circuit a waveform generation source. Configure the source to generate a sine with amplitude of 500uV, frequency 2Hz and 500mV offset. Observe the output signal amplitude in order to determine graphically the total gain of the circuit(Figure 2).   *Transient - Connect at the input of the circuit a waveform generation source. Configure the source to generate a sine with amplitude of 500uV, frequency 2Hz and 500mV offset. Observe the output signal amplitude in order to determine graphically the total gain of the circuit(Figure 2).
  
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 \\ \\
 <WRAP round download> <WRAP round download>
-  * **Heartbeat Measurement Resource Files** +** Lab Resources:** 
-  * Download: {{:university:courses:electronics:heartbeat-circuit-dl.zip|Circuit Schematic - ADIsim}} +  * LTSpice files: [[downgit>education_tools/tree/master/m2k/ltspice/heartbeat_ltspice | heartbeat_ltspice]] 
-  * Download: {{:university:courses:electronics:heartbeat-bb-dl.zip|Breadboard Circuit - Fritzing}}+  * Fritzing files: [[downgit>education_tools/tree/master/m2k/fritzing/heartbeat_bb | heartbeat_bb]]
 </WRAP> </WRAP>
  
 **Return to Lab Activity [[university:courses:electronics:labs|Table of Contents]].** **Return to Lab Activity [[university:courses:electronics:labs|Table of Contents]].**
university/courses/electronics/electronics-lab-heartbeat.1494254034.txt.gz · Last modified: 08 May 2017 16:33 by Antoniu Miclaus

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