The Different Smart Home Technologies

The Different Smart Home TechnologiesIn this report I am going to explain the distinguish completeject smart al-Qaida technologies EIB in any case kn proclaim as KNX and CBUS. I pull up stakes be giving a full explanation about what each body is capable of and a shrimpy about their company background. I will in like manner be comparing both arrangement with the advantages and disadvantages for each establishment. (Add more)EIB (KNX) establishmentEIB (KNX) is the whole worldwide omnibus system which offers a complete range of transmittal media for edifice retain systems, inclu disruptiong Twisted Pair, Power line, Radio Frequency (RF), infr atomic number 18d (IR), Coaxial line of reasoning and Ethernet IP. This smart home internet is designed to work independently on any particular hardw atomic number 18 plat construct. It can be throwled by a network of 8 pussy micro controller to a PC.EIB (European Installation Bus) uses the misshapen pair functioning which uses a cable with two pairs, victimisation only one pair from the twisted cable for parley. The line voltage for these cables is 36v DC. apiece contrivance has a bus coupling unit of measurement which is used to connect sensors and actuators to the bus for example a NIC dining table on a PC. EIB is a field bus technology which is maintained by the Konnex Association. Its topology is the same as the CBUS system.EIB (KNX) has over 176 members and manufacturers in 29 different countries some of which include Ardan smart home, ABB, Armour Home Electronics Ltd, Bosch, Basalte BVBA, CIAT, and galore(postnominal) other companies found around the world. You can find the full list of members and manufacturers athttp//www.knx.org/ A field bus is a special form of Local Area Network that implements, not computers simply sensors and actuators at its nodes and is optimised for short point to point confabulation of status and command messages (M C-Wonders).The field bus system is built up in 7 OSI layers (as sh protest be show period) which is also known as the protocol stack. However the EIB system does not use all 7 layers it only uses 5 layers (See diagram below) this shows the difference between an OSI Model and the EIB Model.OSI Protocol Stack EIB Protocol Stack stratum 1The physical layer in the EIB protocol stack defines both the bit by bit transmission of entropy and the physical media type (how the bits ar transmitted depends on the media type)Here is a specification of the twisted pair which is used in the EIB systemRS485 bit communication theoryTwisted pair cable9.6 kbps1000m range64 end devices per line stratum 2The data link layer defines the device incubateing mechanism, make sure each device has its own unique address. It also defines the manner of access to the bus arbitration as on that point must be a control mechanism which has to stop devices from communicating on the bus at the same time. The device address is as followsDevice number 0 63 Line number 0 11Zone number 0 14An EIB twisted pair system can only beget 15 zones, 12 lines per zone and 64 devices per line.Layer 3On the Network layer there can only be device to device communications as this allows data packet transmission between devices and friendshipless communications. This layer also uses Unicast and Group addressing.Unicast addressing is only used during device installment (system access mode) also using the physical device address.Group address is equivalent of multicast and broadcast addressing as it has normal bus operation mode and allows an input device to control many other groupinged output devices. The group address consists of a main group, middle group and a sub group e.g. 2.4.2Layer 4The transport layer is responsible for reliable communications as it creates a friendship between both the sender and the receiver using positive acknowledgment with retransmission (PAR).The PAR sequence is as followsA connection between sender and receiver is set upSender sends data with sequence numberSender waits a set period of time for an denotation from receiver. If none data is displace again. After 3 attempts to send the data strike failed the operation will terminate its connection If the receiver suspects an error at any point it will send and (Nack), which terminates the connection.2. When all telegrams have been transmitted the connection is terminated.Layer 7This is the application layer in the EIB protocol. This layer is based around the concept of communication objects. Each device on the networks paired with a software application which has the relevant functions it needs. The application associates objects to particular devices as these objects are the communication methods for EIB which use the group address deep down the device. Each application on each device stores an association table, this association table links to the group address table and a communication object table for exampledetector device 1.1.1 send s 1/1/1 to actuators 1.1.2 and 1.1.3 to turn on the actuators (1.1.2 and 1.1.3)Sensor device 1.1.1 sends 1/1/2 to actuators to turn them off Here are some of the advantages of the EIB system with some explanationIt has international standard devising it future proofISO/IECCENELECCENSACAN SI/A SHRAEWith product certification, KNX guarantees interoperability and interworking of productsEIB makes sure that each different manufacturer, product and application communicates with each other. Ensuring a higher(prenominal) flavour of flexibility. High product qualityEIB makes sure each manufacturer follows the correct compliances in order gain a KNX Certification.Unique Manufacturer independent engineering science Tool Software (ETS)ETS allows planning, engineering and configuration for all certified products. It is manufacturer independent allowing the system to combine different manufacturers to one installationCan be used with all applications in home and building controlEIB can be us ed for all functions and applications in a home or building control varying from motivelessing and shutter control to security, ventilation control. Fit for use in different buildings EIB can be easily installed into new or even existing buildings, making it easily extendable making sure it adapts to new needs.Supports different configuration modesE-Mode Easy installation modeS-Mode System installation modeSupports several communication mediaTwisted pairPower lineRadio frequencyEthernet IPCan be coupled to other systemsThe EIB system can be mapped to BACnet objects or offers a possibility to interface within the DALI technology.Independent form any hard- software technologyEIB can be mum on any microprocessor platform and can be implemented from start but only for easy market entrance. It cal also take recourses to providers of the systems components. An EIB system is able to do many things at the touch of one button some examples are shown belowLightingEIB can store and recall different light moods and scenes by pressing the switch/dim button which controls lights on a central level. Being able to adjust internal illume according to impertinent brightness levels allows substantial energy savings. Shutters and blindsWith automated sun protection, weather protection and time controlled shutters/blinds at the press of a button these can be undefendable or closed.Weather stationThis protects the blinds and shutters from destruction by wind, rain down or frost, giving automated roof windows closing when raining. It also display wind speed, rain and also temperature and brightness levels.An EIB system can do many things at the touch of a button including heating, ventilation/ climate control, security, overriding functions, communications, and incorporation of auditory sensation-visual equipment and also helps in customer service.The twisted pair on the EIB, its bit level collision detection with overriding logical 0 which ensures that in case of a collisi on, the transmission always succeeds for the communication partners.Some of the disadvantages of the EIB (KNX) system arecan only be controlled through an 8 bit micro controller to a PConly allows up to 64 devices per linecan only be device to device communicationdoes not allow loop topologiesCBUS SystemClipsal BUS (CBUS) is a microprocessor control and management system for homes and buildings. This system is used to control electrical services such as lighter, audio visual devices, motors, etcetera Either a simple on/off control for lighting or variable (analogue) type control for example dimmers. CBUS is easily controlled through more or less any type of electrical load.CBUS certifies each of its products has its own built-in microprocessor for reliability and fast operation allowing each unit to be programmed individually. CBUS uses a unique method of updating each unit which involves a method which can not involve a central computer or controller. Each unit device is assigne d a specific time tack together in which it broadcasts its status which is then synchronised by a self generated system clock pulse. This allows bulky quantities of data to be passed on in junior-grade time frames in low overheads and bandwidth requirements.CBUS is an complected system of inputs (sensors) and outputs (controllers) used to allow automatic operation and control of machinery or processes such as environments that can make and execute decisions with or without human interface (MC-Wonders). CBUS uses a UTP cat 5 cable which allows each of its devices to interconnect within the system.The maximum total cable length per network cannot exceed more than 1000 meters with a system voltage of 15v D.C 36v D.C (across any node in a network). Its data rate is 3500 bits/second with 64 byte frames. Its bus contention method uses CSMA/CD with CA.CBUS transmit units and dimmers units connect to the main cater supply and other switches/sensors which are used to control a building s electrical service. The network is electrically isolated from the mains supply operating at a safe extra low voltage level of 36v DC.The CBUS system is develops continuously therefore making it practically unlimited. Networks of 100 units are larger installations which have been divided allowing the system to be managed in sections, up to 1000 meters of cables may be in installed in each network.The CBUS system can be as large or as small as a user prefers it to be and it does not only simplify the design of automations needed but limits potential faults which makes trouble shooting easier.CBUS responds too many of the following devicesHome amusement audio visual, lighting control Security integrated security, lighting Comfort scene setting, dimmingConvenience central point control from touch screens, automated time based control, multiple point control, automated messagesCBUS is suitable for many different applications for exampleResidential AutomationHome entertainment aud io visual, lighting control Security integrated security, lighting Comfort scene setting, dimmingConvenience central point control from touch screens, automated time based control, multiple point control, automated messagesStandalone room lighting controlVia a touch screen user interface becomes automated for conference entourage and home theatresMany different scene and mood setting are visible(prenominal)Commercial light controlIn a warehouse high bay control is used for energy saving costsEnergy saving costs in high rise buildings is brought to minimum by using fluorescent lighting. For retails and restraints mood lighting is used to set a sceneFlexible control of lighting and audio visual used in boardroomsFor hotel foyers, ballrooms, etc architectural lighting control is usedCBUS supports all multi room audio visuals with a full range of amplifiers and ceiling speakers which are all controlled by switches and touch screens. As all electrics have to return to one central pan el it is very expensive to convert existing houses to use CBUS unless renovations are being made allowing reconfiguration.A switch which is placed in the boardroom is programmed with the CBUS group address. When the light switch is pressed an on command is move to the group address of the CBUS.The command which was sent to the group address from the input switch is then sent on to the CBUS network or all units throughout the network. Only the programmed units respond to the command form the group address. Other units which have not been programmed to respond the message will ignore the command as it was not intended for them. This is only an overview of the flexibility and power of the CBUS system. When using a CBUS system each device has to have a CBUS connection including devices such as the mains power will obviously need connection to the mains. Wiring for the mains and CBUS do not need to be adjoining as the mains can be connected to a different phase or whole different syste m.Field bus systemThe advantages of a system includeLess complex installation this means less hassle with wiring as it can be done through a bus that carries the messagesTotal ownership cost becomes less reduced cabling and installation time, easy modification and nurture and easy to fault find means reduced costs.Offers more flexibility Each node is a micro controller which is programmable. Each node has its own intelligence making no 1 point of failure. CBUS can have a maximum of 255 sub networks, within each sub network there is a combination of input and output units a sub network allows a maximum of 100 units which can connect to a single sub network. When sub networks contain units it is essential to be able to give each unit a address, there are 4 main levels of addressing which are available for these units these are1. Network address This is assigned to each sub network with a 2 digit HEX value2. Unit addressThis unit address identifies the individual unit for example ligh t switch3. Area addressAllows division of a sub network, it also enable messages to be sent to areas by the units4. Group addressReally a less specific area addressing scheme, only allows maximum of 255 groups on a sub network. at that place are two main devices which are needed in order to set up a CBUS system. These are a power supply and a PC interface which is used for programming the units.Some of the advantages of CBUS system areCBUS can forcefully and reliably control all the different systems with low costs per node.There are many different tools which are used to allow 3rd party companies to interface with both PC and embedded systems.One CBUS connection controls a unlimited number of devicesCBUS is very flexible for switching and controlling, for example functions may be removed, changed, added or reprogrammed at any time without bulky hard-wiring through the network itself.Simple installation processCBUS is able to control all different types of load including load, digit al and analogue.Some of the disadvantages of the CBUS system areit can have only one distribution paneldoes not allow loop topologieseach device has to return to one central paneleach device has to have a CBUS connectionCBUS and EIB ComparedCBUS and EIB systems are used to control electrical devices in home and building environments for example both home systems can control lighting, dimmers, audio visuals and many other electrics. They also have the same topologies available which includes the bus topology, star topology and the hybrid topology. Neither of these systems can form loop topologies as this does not allow the system to have a valid distribution panel.The EIB system can only uses device to device communications as this allows data packet transmission between devices making connectionless communication whereas the CBUS system uses a network connection which is set up on each node through each sub network mask. This also means that the CBUS system can have as many devices link up to one distribution panel making it an unlimited as an EIB system can only have up to 64 devices on each line within each zone available.Each CBUS product has its own built-in microprocessor which allows each unit to be programmed individually. As each unit device is assigned a specific time frame great quantities of data can be passed in small frames. In an EIB system there can only be device to device communication as this allows data packet transmission between devices and connectionless communications, within the transport layer is creates a connection between both sender and receiver.Both EIB and CBUS systems have a maximum cable length per network which cannot exceed more than 1000 meters with system voltage of 15v DC 36v DC. CBUS has a maximum of 255 sub networks within which there is a combination of input and output units. Within sub network a maximum of 100 units can be connected to a single network. In an EIB system the twisted pair system can only have 15 zones within those zones there can only be a maximum of 12 lines. There can only be a maximum of 64 devices per line on a zone message there is limited space on the system.A typical scene situationThere are two lighting ecdysiasts within an office. Lighting strip 1 is located by the window, lighting strip 2 by the wall. These lights can be switched on and off manually. If there is equal ambient light, the lighting strips are switched off and are locked (i.e., they cannot be switched back on again) automatic switching on again when darkness falls is not required but is manually possible. Before the start of a working day a timer automatically switches lighting strip 2 on to guarantee sufficient light level.This is the layout of the office with strip lights and touch switches and actuatorsA solution to this problem would be to get bus devices including 1 touch sensor to fold, 1 bus coupling module which will have a brightness sensor and timer (1 channel) which is din rail mounted, 1 con troller again it should be din rail mounted, 1switchin actuator 2 fold and a din rail mounted devices installed in the distribution panelWhen an outside has sufficient light, the brightness sensor will automatically switch off lighting and lock it. In order for this operation to succeed the brightness sensor telegram (address 1/0/3) is AND (gate) linked with the touch sensor telegram (address 1/0/1). The output of the AND gate sends a message (address 1/0/6) to the switching actuator (1.1.4) which will switch lighting strip 1. To avoid the brightness automatically switching the light back on when it is darker the result of the linking (1/0/6), this is why when the sensor is switched off both inputs in the AND gate are set to 0.These are the parameter blocks which are used in the programming of the systemPRICE COMPARISON