As smart home automation technology occupies a broad market in the UAE and around the world, it is important to understand the different options in the technology architecture, as this saves real estate owners' risky investments, allowing them to pay more for any form of return on investment. .
This document is intended to compare the design architecture of Z-Wave with MODBUS or CBUS systems. The characteristics or detailed specifications of the protocol will not be discussed, as the differences in design architecture between these protocols and their components may be sufficient to determine which technology provides the greatest investment protection.
The design architecture in this document will cover the interconnection of the lighting circuit level. In a very basic form, and in a typical house without any smart home functions, the ceiling lights will be connected in series with the light switch and switchboard [DB]. The 220V line will start from the electrical DB, enter the standard relay, enter the junction box that connects the standard light switch, and then return from the junction box to the ceiling light and back to the neutral connection of the electrical DB.
Z-wave from
The network architecture is exactly the same as the standard above, which is why the Z-Wave system can adapt to any existing home. In order to install the system, all that is required is to replace the standard lighting switch in the junction box with a light switch that supports Z-Wave. All other connections to the DB and ceiling lights have not been touched.
All intelligence comes in the wireless switch installed in the junction box. The smart home server or controller must then send a command to the switch wirelessly to turn the light on, "off" or "DIM".
MODBUS or CBUS from
On the other hand, based on the system, using a completely different architecture, the architecture is non-standard compared to standard home lighting systems [described first in this document]. In a MODBUS or CBUC system, the connection between the DB and the ceiling light and between the DB and the junction box [wall switch] is completely independent. In addition, there is no connection between the junction box and the proportional ceiling light. The intelligence of the MODBUS or CBUS system lies in the "channel dimmer" or "channel relay", which is installed in the database and will replace the traditional standard relays currently installed in existing homes. This "channel dimmer" will be directly interconnected with the ceiling light 220V line and return to the neutral connection from the ceiling light to the "channel dimmer". The Channel Dimmer will directly control the light and manually receive commands via a rail mounted controller connected to its communication port [which can be a serial port] or from a wall-mounted light switch/keyboard. This wall-mounted light switch will not be connected to any load and will be connected directly to the "channel dimmer" via the control/signal cable. "Channel dimmers" are usually 4 or 8 channels, which means they can be connected to 4 or 8 separate lighting circuits at the same time. This DIN rail mounting device is also a single point of failure for everyone. These 4 or 8 lighting Circuit.
in conclusion
Now that the design architecture has been explained, we begin to compare their strengths and weaknesses with real estate owners. It is clear that systems based on MODBUS or CBUS do not have standard interconnections between the lighting circuit and the junction box [wall switch], so these systems must be installed during the construction phase to ensure proper wiring between and between the dimmer and the lamp. . Channel dimmer and wall switch. But this means a great risk to any family, that is, if the channel dimmer fails, the entire set of lighting circuits will fail [for example: all bedrooms on the second floor]. In addition, in the event of a failure, no standard electrician can solve the problem, the homeowner will not be able to wait for the company installing the system to order, deliver and install Channel Dimmers; this process can take several weeks. Finally, in the worst case, what is Channel Dimmer failing in 5 years and the technology becomes obsolete, or the company providing maintenance has closed down? In this case, the homeowner will leave two options, either to find a competitor's similar technology, which will require a complete reinstallation of the entire system, including the controller, touch screen, etc. Or the homeowner can revert to a standard lighting system that is not "smart home," but to do this, the entire house must be rerouted; a project can take weeks to keep the house in an infeasible state until competition, don't forget The cost of having to run such a project may cause the investment in the smart home system to start to lose money.
Let's look at the same scene from the perspective of the Z-Wave system. The Z-Wave system only needs to replace the wall switch with the Z-Wave function of the wall switch on the standard electrical wiring system. Therefore, if the Z-Wave light switch fails, it will only affect one lighting circuit [ceiling light]. In addition to this, you need to simply replace the light switch. Taking into account the worse situation, the Z-Wave light switch failed after 5 years, and the company providing these light switches has been shut down, the homeowner will have no choice but to return to the standard without "smart home" "system or wait a week Time to order alternatives. In this case, all that is needed is to replace the failed Z-Wave light switch with a standard wall switch, no need for rewiring or complicated installation, any electrician can do this Work. The homeowner can do it himself! It is worth noting that in this worst case, this situation can be easily solved and can be relieved by any available electrician's service, they do not need to understand the intelligence Any information about the home. MODBUS or CBUS requires professional training to handle more complex work, affecting the cost of time and any type of maintenance, both primary and secondary.
Orignal From: Z-Wave and MODBUS / CBUS Systems - Design Architecture Perspective
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