A chemical processing plant requires a simplified safety control system to monitor critical conditions in one of its reactors. The system must evaluate three key parameters and activate two response levels. A combinational circuit with 3 sensors and 2 alarms needs to be designed for this purpose. Sensors: A: Reactor temperature (0 = normal, 1 = high) B: Reactor pressure (0 = normal, 1 = high) C: Mixture pH level (0 = normal, 1 = out of range) Alarms: X: Warning alarm Y: Activation of the emergency shutdown system System requirements: 1. The warning alarm (X) should activate when: At least two parameters are out of range. • Or when the temperature is high (A = 1) and any other parameter is out of range. 2. The emergency shutdown system (Y) must activate when: • All parameters are out of range simultaneously (A = 1, B = 1, C=1). • Or when the temperature and pressure are high simultaneously (A = 1 and B = 1), regardless of the pH level. Request: 1. Design the logic circuit for this simplified safety control system. 2. Use Karnaugh maps to simplify the Boolean functions for each output. 3. Implement the circuit using standard logic gates (AND, OR, NOT). 4. The design must prioritize safety, ensuring that there are no dangerous conditions that do not activate the appropriate alarms. 5. The circuit should be as simple and reliable as possible, minimizing the number of components to reduce the possibility of failure.

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A chemical processing plant requires a simplified safety control system to monitor critical
conditions in one of its reactors. The system must evaluate three key parameters and activate two
response levels. A combinational circuit with 3 sensors and 2 alarms needs to be designed for this
purpose.
Sensors:
A: Reactor temperature (0 = normal, 1 = high)
B: Reactor pressure (0 = normal, 1 = high)
C: Mixture pH level (0 = normal, 1 = out of range)
Alarms:
X: Warning alarm
Y: Activation of the emergency shutdown system
System requirements:
1. The warning alarm (X) should activate when:
At least two parameters are out of range.
• Or when the temperature is high (A = 1) and any other parameter is out of range.
2. The emergency shutdown system (Y) must activate when:
• All parameters are out of range simultaneously (A = 1, B = 1, C=1).
•
Or when the temperature and pressure are high simultaneously (A = 1 and B = 1), regardless
of the pH level.
Request:
1. Design the logic circuit for this simplified safety control system.
2. Use Karnaugh maps to simplify the Boolean functions for each output.
3. Implement the circuit using standard logic gates (AND, OR, NOT).
4. The design must prioritize safety, ensuring that there are no dangerous conditions that do not
activate the appropriate alarms.
5. The circuit should be as simple and reliable as possible, minimizing the number of components
to reduce the possibility of failure.
Transcribed Image Text:A chemical processing plant requires a simplified safety control system to monitor critical conditions in one of its reactors. The system must evaluate three key parameters and activate two response levels. A combinational circuit with 3 sensors and 2 alarms needs to be designed for this purpose. Sensors: A: Reactor temperature (0 = normal, 1 = high) B: Reactor pressure (0 = normal, 1 = high) C: Mixture pH level (0 = normal, 1 = out of range) Alarms: X: Warning alarm Y: Activation of the emergency shutdown system System requirements: 1. The warning alarm (X) should activate when: At least two parameters are out of range. • Or when the temperature is high (A = 1) and any other parameter is out of range. 2. The emergency shutdown system (Y) must activate when: • All parameters are out of range simultaneously (A = 1, B = 1, C=1). • Or when the temperature and pressure are high simultaneously (A = 1 and B = 1), regardless of the pH level. Request: 1. Design the logic circuit for this simplified safety control system. 2. Use Karnaugh maps to simplify the Boolean functions for each output. 3. Implement the circuit using standard logic gates (AND, OR, NOT). 4. The design must prioritize safety, ensuring that there are no dangerous conditions that do not activate the appropriate alarms. 5. The circuit should be as simple and reliable as possible, minimizing the number of components to reduce the possibility of failure.
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