A smart home does not necessarily have to be expensive to implement. In this tutorial, we will present an example of a typical smart installation for a single-family house, based on DOMIQ and Satel modules, which is inexpensive and simple to execute. It assumes the implementation of the following functionality:
It should be emphasized that achieving the above functionality requires the DOMIQ/Base module, which constitutes the foundation of the installation and the central point of the system, to which expansion modules are connected. To implement the first three functionalities, we used the DOMIQ/Expander module and expansion modules from Satel (models INT–IORS or INT–ORS). The number of expanders depends on the number of controlled circuits and the number of control elements such as: wall switches, motion detectors, etc. In the further part of the tutorial, we will discuss each subsystem along with the adopted assumptions. At the end of the tutorial, we have compiled a list of necessary devices along with prices.
As an example house for which we will describe the installation, let’s assume a house with an area of 150 m². The house consists of the following rooms:
Lighting control is the most frequently implemented subsystem of a smart home. In our example house, we assumed the following number of lighting circuits for particular rooms:
Total: 27 circuits, therefore 27 relays are necessary.
For lighting control, bell-type (monostable) buttons can be used, performing a switching function (one of the functions of the DOMIQ/Expander module), meaning that with each press of the button, the relay changes its state to the opposite, or traditional switches can be used. Additionally, in the corridors, it is planned to use two PIR detectors to activate the lighting. So that each circuit can be controlled independently, we will need 27 inputs in the expanders for switches and an additional 2 inputs for motion detectors. Therefore, a total of 29 inputs.
Apart from buttons and detectors, the lighting can also be controlled using DOMIQ user interfaces such as the DOMIQ/Remote and DOMIQ/AirDisplay applications, as well as via logical functions of the DOMIQ/Base module (time rules and events).
In the considered house, we assumed the installation of external roller shutters on all windows. In the case of the living room, where there may be more windows (in our case 2), we assumed that the roller shutters are controlled together (of course, it is possible to plan separate control).
To control a single roller shutter, 2 relays are necessary (one for power supply and one for defining the direction of roller shutter movement). Assuming that the described building has 8 windows, a total of 16 relays will be necessary to control them.
For controlling the roller shutters, it is most reasonable to use bell-type (monostable) buttons. Roller shutters can be controlled in two ways.
The first way assumes that the roller shutter moves as long as the button controlling it is pressed. The DOMIQ/Expander module enables sending the Turn On (monostable) command to the Satel expander, which keeps the relay activated as long as the button is pressed, which perfectly fits this roller shutter control scheme.
The second way does not require the user to hold the button during the roller shutter’s movement. However, it will be necessary to create simple logical rules in the Base module that allow roller shutters to be controlled by single button presses: the first press initiates the roller shutter’s movement in the selected direction, while the next press stops it. As one might easily guess, 2 buttons are needed for the roller shutter movement up and down. In the case of both buttons, it is necessary to switch the relay responsible for supplying power to the roller shutter and to set the relay defining the direction of roller shutter movement to a selected value.
Both approaches require two buttons for each room, and therefore the same number of expander inputs will also be needed. For the entire building, 16 inputs will be necessary.
As the heat source, we assumed a central heating boiler. Under this assumption, heating control can be implemented in two ways: boiler control and radiator valve control.
To control the boiler, communication with it is required using one of the communication standards supported by the DOMIQ system. The available options are: MODBUS (DOMIQ/Serial–4MB), RS–232 (DOMIQ/Serial–2SG), or RS–485 (DOMIQ/Serial–4SG). We particularly recommend using the MODBUS protocol due to the possibility of future integration of additional devices using the DOMIQ/Serial–4MB module. It is worth keeping this in mind when choosing a boiler. Using communication with the boiler, the DOMIQ system can send commands controlling its operation. All control can be fully automated based on time rules or events in the system—for example, changing the temperature when leaving the house, lowering the temperature at night, etc.
The second type is radiator valve control. For this to be possible, the heating circuits need to be equipped with electrically controlled valves, which should be connected to the expander outputs. In our example building, there are 8 heating circuits, so 8 relays will also be necessary. In this control model, it will also be necessary to equip the building with temperature sensors. Here, there are also two solutions: use of wireless Satel sensors (utilizing the presence of the alarm control panel in the installation and the planned integration); or the use of room temperature sensors communicating via the MODBUS protocol (additional use of the DOMIQ/Serial–4MB module). In this model, valve control can be manual or fully automated based on time or logical rules. In the case of manual control, an additional 8 inputs in the expander should be provided for this purpose.
Both presented control methods can also be combined.
The DOMIQ system enables integration with the Satel Integra alarm system. To communicate with the alarm control panel, the DOMIQ/Serial–2SI module is required. Integration enables reading the status of the control panel (information about an alarm, status of inputs and outputs, and zones), arming/disarming zones, and controlling the control panel outputs. The alarm system is also a source of many useful pieces of information from the point of view of creating logical rules in the DOMIQ system. For example, the alarm system can be the basis of information about the presence of people in the building (based on the status of alarm zones), which makes it easy to create scenarios for leaving or returning home. Another example application can be information from magnetic contacts mounted on windows about their opening, which can be the basis for controlling heating or air conditioning. The wireless temperature sensors mentioned in the previous section can be used for heating control.
Moreover, the DOMIQ/Remote application enables controlling the alarm installation from a phone or tablet (also remotely), thanks to which it is always possible to check the status of the alarm system anywhere and anytime.
Control of electrical socket circuits is very easy to implement using the DOMIQ/Expander module and Satel expanders. The number of relays necessary for this purpose depends on the adopted division of socket circuits. Control in this case should primarily be automated, e.g. switching off certain circuits when leaving the house or in the event of emergency situations in the installation. In our case, we assumed 4 electrical socket circuits that will be controlled by the system.
At the end, a summary of our installation in numbers, i.e. a table of necessary devices along with their prices.
To determine the number of required expanders, the number of necessary inputs and outputs should be summarized. In our case, we adopted the maximum variant, i.e. we assumed heating control using radiator valves and the possibility of their manual control. In total, in our example installation, 53 inputs and 55 outputs will be needed, so it is necessary to purchase 7 expanders. In the summary, we assumed the use of wireless temperature sensors connected to the alarm control panel.
| No. | Device Name | Quantity | Unit Price net [PLN] | Total net amount [PLN] |
|---|---|---|---|---|
| 1 | DOMIQ/Base | 1 | 3000 | 3000 |
| 2 | DOMIQ/Expander | 1 | 600 | 600 |
| 3 | DOMIQ/Serial–2SI | 1 | 600 | 600 |
| 4 | DOMIQ/Serial–4MB | 1 | 600 | 600 |
| 5 | Ekspander Satel INT–IORS | 7 | 250 | 1750 |
| 6 | detector PIR Aqua Plus | 2 | 35 | 70 |
Total 6620 zł
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