Home automation and HVAC control_paasmer platform

Home Automation and HVAC Control

ManagementTeamMouli1

Srinidhi Murthy

The Internet of Things is set to disrupt the way we live and work, but for now, let’s focus on the “live” portion of that statement. Smart homes filled with connected products are loaded with possibilities to make our lives easier, more convenient, and more comfortable.

Imagine that you’re driving home on a hot summer day. But rather than turning the air conditioner on when you get home and wait for your house to cool, you simply use your smartphone when you leave your office to tell your smart thermostat to lower the temperature.

Or imagine that you’re cooking dinner, and you ask the voice assistant to read you today’s biggest news stories so that you can focus on making your kid’s favorite lasagne. There is no shortage of possibilities for smart home IoT devices, and home automation seems to be the wave of the future.

Experts estimate that the number of smart home devices shipped will grow from 83 million in 2015 to 193 million in 2020. This includes all smart appliances (washers, dryers, refrigerators, etc.), smart home safety and security systems (sensors, monitors, cameras, and alarm systems), and smart home energy equipment, like smart thermostats and smart lighting.

There are many benefits of home/building Automation which are listed below.

  • Security: Motion sensors
  • Efficiency: Automatic switch off when not in use.
  • Convenience: Control everything from your fingertips.
  • Savings: You save money with an efficient Home automation system.

The first and most obvious benefit to smart homes is a convenience, as more connected devices can handle more operations (lighting, temperature, etc.) and free up the resident to perform other tasks.

As with all shifts in technology, changes will happen in the ways we live and do business. With the actions being taken for more energy efficiency in construction and managing of buildings there is a big potential through Internet of Things. HVAC systems that can make their own intelligent decisions based on presence, weather and lots of other indicators have a great potential to cut energy use and cost.

We are also certain that new business models will emerge. HVAC systems using IoT will be able to predict situations from collected data and have automated alarms for service and maintenance that can facilitate new services.

Paasmer:

Mobodexter’s PAASMER provided the complete set of components to build this solution from End to End satisfying all the needs of the client in the shortest possible time frame.

Here we explain how PAASMER has been used to connect a traditional HVAC system using a custom built IR blaster to the Paasmer IoT platform and how to control the same remotely.

Paasmer_HVAC

The solution has 4 modules, the Hardware, the Misty OS, the Paasmer IoT Platform and the App. We shall look at each of them below.

Gateway Hardware:
The Gateway Hardware consists of Network MCU boards with an IR Receiver and an IR transmitter connected to it. The Firmware that runs on the Network MCU is responsible for connecting to the Paasmer IoT Platform and ability to send and receive data from the Paasmer IoT platform.

It is also responsible for decoding the correct pattern to be sent via the IR transmitter and recording the correct pattern from the IR receiver.

Misty OS:

Misty OS is designed to be flexible, modular and gateway platform agnostic. The core functionality of the OS, Connectivity, H/W interface and middleware component are built into Misty OS. The gateway has interfaces for IR Transmitter and an IR receiver

It operates in two modes, Learning, and Transmits.

In Learning mode, the Hardware learns all the new IR codes that are needed for a particular device and stores the data on the Paasmer IoT Platform specific to the user. The learning mode can be enabled from the App and has options to choose the device type and device subtype. Once all the buttons of the remote have been learned it is ready to work.

In Transmit mode, messages are received from the App via the Paasmer IoT platform inform the Hardware to blast out the appropriate IR signature for the button pressed in the App. This IR signal is blasted across and very wide range using duplicate IR transmitters to cover an almost 360-degree range to control the HVAC system.

Paasmer IoT Platform:

Paasmer is a one stop shop for connecting all your devices to the internet and read data from them as well as control them. The Paasmer IoT Platform hosts the message broker, the necessary business logic, data store and all the necessary interconnections between them. It provides a platform onto which all Gateway HW devices, mobile phones, websites can be interconnected.

App:

The App connects to the Paasmer IoT Platform and based on the user login details and displays the data of the devices that are available for control. The user can select the appropriate device and control the device using the buttons on his screen. These button clicks are translated to the respective messages which are published by the Paasmer IoT Platform.

Paasmer_HVAC_1

In the current scenario a user wants to switch off the HVAC, so he selects the HVAC and then switches it off. These switches off messages are published to the broker on a particular topic. The Gateway Hardware is subscribed to this particular topic and hence receives the message.

The Gateway Hardware then decodes the message and immediately blasts the respective IR signature to turn off the AC.

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