Have you ever left the house in a frenzy only to get a few minutes down the road and fail to remember if you closed the garage door or not? If you have this system, it will be very beneficial for you as it can notify you before you’re out of the neighborhood. The open garage door alert system uses a series of three particle argon computers connected to a digital button, motion sensor, and laser break to determine if you left the garage door open.Digital Button
The primary Argon and sensor in this system is the digital button. This sensor is used to determine if the garage door is open. The sensor is placed in a custom designed and 3D printed housing that fits in the track of the garage door. When the door slides up the track to the open position it will depress the button. The custom mount allows the configuration to work on a variety of different size garage doors. This setup can be seen in the image below:
When the button is depressed, a signal is sent to the argons connected to the motion sensor and laser break to start collecting data and report back if certain criteria has been met. If all the criteria are met the argon will publish a signal that initiates a notification to be sent to the user to remind them that they have left their home with the garage door open. The spikes in the chart below indicate when the garage door is open by denoting a value of “1”. When the door is closed a value of “0” is denoted. These values of “1” and “0” correspond to published events for “Open” and “Closed” respectively.
The motion sensor is positioned on the wall in the garage with the purpose of detecting if motion is present. If there is motion present, the system assumes that you are doing something in the garage such as loading up the car or working on a project with the garage door open. With this being the case, it will not send a signal back to the primary argon. The placement of this sensor can be seen in the image below:
If this sensor detects no motion, it will send a signal to the primary argon. The spikes in the chart below indicate when there is motion detected by denoting a value of “1”. A value of “0” is denoted if there is no motion detected. These values of “1” and “0” correspond to published events of “Motion_Yes” and “Motion_No” respectively.
The Laser Break is constructed using a laser emitter and photo resistor and is used to detect if the car keys are present on the key hook. This setup can be seen in the image below:
When the keys are present, they will block the laser from reaching the photo resistor and a light level below the threshold is measured. In this event a value of “1” will be recorded. If the keys are not present the laser will shine directly on the photo resistor and a light level above the threshold is measured. An event value of “0” will be recorded. These values of “1” and “0” correspond to published events of “Keys_Yes” and “Keys_No” respectively.
The image above shows the communication schematic between the three argons. The process starts when the digital button reads that the garage door is open. When this occurs, the primary argon sends a signal to the motion sensor and laser break argons to begin reporting data. The primary argon then takes this data and determines if they align with the preset conditions. If the conditions of the garage door being open, no motion detected, and the absence of keys are all met, the primary argon will publish an event that can be used to trigger a variety of notification methods.