Circuit Diagram for lights in a building (Sound/Light Sensor + Delay)

In summary, the task is to design a system where a light (lamp) turns on when sound is heard and turns off after 10 seconds of no sound, but only when it is dark (light sensor). The solution involves using a light sensor and a sound sensor connected to an inverter and a delay, which are then connected to an AND gate. The light is connected to the AND gate so that it only turns on when both the sound and light sensors are active. There is a delay at the start of the system, but it can be modified by connecting the output of the delay and inverter to an OR gate, which then connects to the AND gate.
  • #1
06mangro
20
0

Homework Statement


Need to design a system where the lamp (output) turns on when sound is heard and turns off after 10 seconds of no sound, but it must also be dark (light sensor).

Homework Equations


The Attempt at a Solution


I have put a Light Sensor (that is set to let current flow when it is dark). Then i have a sound sensor, connected to an inverter, which is connected to a delay (set to 10 seconds). These are both connected to the light (lamp) through an 'AND' gate so that both must be allowing current to flow for the light to turn on.

When turning the light on there is a delay, (the question didn't say that having a delay at the start isn't correct, but if someone could tell me how to modify it so that that doesn't occur, it would be appreciated)
 
Last edited:
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  • #2
the output of the delay and the output of the inverter should connected to an OR gate. The output of the OR gate goes into the AND gate.

Delay:
output=OR gate
input=inverter

OR Gate:
output=AND gate
inputs=inverter,delay

AND Gate:
output=lamp
inputs=Or gate,light sensor.

make sense?
 

FAQ: Circuit Diagram for lights in a building (Sound/Light Sensor + Delay)

What is a circuit diagram for lights in a building?

A circuit diagram for lights in a building is a visual representation of the electrical connections and components in a lighting system. It shows how the lights are connected to power sources, switches, sensors, and other devices in a building.

What is the purpose of a sound/light sensor in a circuit diagram for lights in a building?

A sound/light sensor is used in a circuit diagram for lights in a building to automatically detect changes in sound or light levels and trigger the lights to turn on or off. This can help save energy and provide convenience to the building occupants.

How does a delay work in a circuit diagram for lights in a building?

A delay in a circuit diagram for lights in a building is a component that allows for a pause between the detection of a sound or light signal and the activation of the lights. This delay can be adjusted to suit the needs of the building and its occupants.

What are the benefits of using a circuit diagram for lights in a building with a sound/light sensor and delay?

Using a circuit diagram for lights in a building with a sound/light sensor and delay can provide energy efficiency and convenience. The lights will only turn on when needed, reducing energy waste. The delay also allows for a smoother transition when the lights are activated, preventing sudden changes in light levels.

Are there any potential drawbacks to using a circuit diagram for lights in a building with a sound/light sensor and delay?

While there are many benefits to using this type of circuit diagram, there are a few potential drawbacks to consider. The system may be more complex and require more maintenance, and there may be instances where the lights do not turn on or off as expected due to false triggers from the sensor. It is important to regularly monitor and adjust the system to ensure optimal performance.

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