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Č. 20/2014 (19.05.2014)
Pythia naší doby.
PYTHIA, každá panna kněžka v chrámu Apolla u Delphi ve starověkém Řecku -.hráli roli orákula, vidí věci, není k dispozici pro ostatní. Scio je zařízení o velikosti USB flash disk, který umožňuje "podívat se" do vnitř různých předmětů. Například, můžeme zjistit obsah vody v ovoci, množství alkoholu v nápoji, chemické složení pilulky, nebo kalorickou hodnotu jídla. Vše rychle, snadno a pro každého!Zařízení vděčí za svůj úspěch na portálu Kickstarter - crowdfunding platformu, která přináší kreativní projekty k životu kolekce financí z podporovatelů.Projekt se stal tak populární, že potřebné množství finančních prostředků (200 000 USD) nezbytné pro další práci zaměřené na uvedení zařízení na trh, byl získán v rámci ... 24 hodin. V době psaní tohoto článku, popis projektu přesahuje 1 400 000 USD, a je asi měsíc do konce kolekce.
SCiO byla vyvinuta vědci z předních univerzit ve světě: MIT a Harvardu. Kromě své malé velikosti, síla je velmi vysoká, přesná a nízká cena základního modelu: 149 USD. Použitá technologie je známá po desetiletí na kontrolu kvality oleje, odpadní vody a chemikálie, ale toto zařízení může mít mnohem širší využití v každodenním životě.
This innovation is a miniature version of a near-IR spectroscope capable of identification of compounds, their mixtures, and object structure. "SCiO includes a light source that illuminates the sample and an optical sensor called a spectrometer that collects the light reflected from the sample. The spectrometer breaks down the light to its spectrum, which includes all the information required to detect the result of this interaction between the illuminated light and the molecules in the sample." (www.kickstarter.com) The acquired data is transmitted via Bluetooth to the smartphone of the user and then forwarded to the cloud, where is analyzed. The results are immediately sent back to the phone and shown on the screen.
Potenciál využití Scio je obrovský, ale nejzajímavější varianta se zdá být analýza chemického složení potravin. Chcete-li to provést, nastavte spektrometr ve směru např. talíře polévky a po chvíli budete mít informace, jaký je počet kalorií, množství tuku a sacharidů. Tyto údaje jsou užitečné pro dietu, aby se zabránilo některým součásti potravin a konečně umožňují efektivní a jednoznačné posouzení kvality potravin jsou podávány v restauracích a jiných takových místech. Kromě toho SCIO vám pomůže vybrat nejlepší kvalitu, jako například ovoce nebo zeleniny, o jejich analýze z hlediska obsahu vody a cukrů.
Scio se stala populární tím, že tzv.. "Výrobce kit" "pro vývojáře, aby mohli používat technologii, aby jejich vlastní účely a vytvořit homegrown aplikace.
Jak to dopadá SCIO není jediné zařízení tohoto typu.Kanadská společnost má TellSpec letos vydat podobný analyzátor.
Jak to dopadá SCIO není jediné zařízení tohoto typu.Kanadská společnost má TellSpec letos vydat podobný analyzátor.
DIPOL at Mobile-IT 2014 trade fair.
On May 27-28, 2014, the first edition of Trade Fair of Mobile Solutions and Technologies Mobile-IT will be held in Krakow, Poland. The event is aimed at presenting the effective use of mobile IT technology, both in the public and private sectors. High level of the program will be maintained by professional institutions, science and research groups together with industry specialists. The main event of the fair will be Mobile Trends for Business conference addressed for businesses, marketers and developers.Trade Mobile-IT is an excellent choice for all who are interested in mobile technologies. During the event they will be able to learn about new products presented by, among others, ASPEKT, AirWatch Aerohive Networks, baramundi software AG, BioTrustis, Cisco Webex, ComVision (SMSAPI.pl), BlueJeans Network, CLICO, DIPOL, Eddie Consulting Groups, Elproma Elektronika, Greeneris, i-Systems, i-sklep.pl, KiM Group, KISS DIGITAL, MobileExperts, Motorola Solutions, Splashtop, Vaultive, Zebra Technologies, Zoom.
High professional level of the event will be guaranteed the speakers at the Mobile Trends for Business conference. DIPOL will be represented by Mr. Lukasz Kopciuch, the engineer and product manager responsible for cellular repeaters/amplifiers. The previous editions of the conference were attended by hundreds of professionals in mobile technologies.
Some products presented by DIPOL will be the programmable Signal GSM amplifier/repeater with remote monitoring of operating parameters and Trans-Data BTS antennas dedicated for use at base stations by cellular operators.
There are free tickets available - details. More on the DIPOL's offer for the Mobile IT trade fair can be found here.
There are free tickets available - details. More on the DIPOL's offer for the Mobile IT trade fair can be found here.
Precision in every way.
The key to a good quality splice (mechanical or thermal) is an adequate preparation of the fiber. Of all the operations carried out prior to the splicing, the most significant is the proper cleaving so that the cleaved plane is smooth and perpendicular to the axis of the fiber core.
The choice of high quality tools is important for the comfort and results of the installation work. The fiber cleaver ODW-001 L5802 is ideal both for installers who start working with optical fibers, as well as for those who already make a lot of connections. The tool is manufactured with the highest standards, its laser-sharpened blade has 12 cutting positions, each capable of cleaving the fiber several thousand times. The excellent value for money will allow each installer to buy the tool and work easily and professionally, with the highest precision.
Images from CCTV cameras as DVB-T channels in MATV system.
TERRA channel amplifiers are the most versatile devices for receiving and processing television signals in shared antenna systems. With the use of DVB-T modulator TERRA mdx420 R82518, it is possible to inject into such system two video channels from analog CCTV cameras, which can be received by any standard DVB-T television (COFDM). The diagram below shows such a system installed in a multifamily building.
The DVB-T broadcasts from the A2670 antenna are provided to a four-channel highly selective tunable RF amplifier TERRA at440 R82511 capable of filtering, amplifying and equalizing four digital multiplexes broadcast in the UHF band. Additional multiband (FM/VHF/UHF) amplifier TERRA ma400 further amplifies the UHF signals and allows for adding FM and (if needed) VHF signals. The images from two security cameras are fed to DVB-T modulator TERRA mdx420 R82518. The device has two audio/video channels (two independent sets of A/V inputs for connecting two A/V sources). The output DVB-T RF channel (multiplex carrying the both A/V signals) is distributed throughout the antenna system. This way, the high quality video provided by the two Sunell M11271 cameras with horizontal resolution of 900 TVL can be watched without any loss of quality on any television in the building.
This kind of antenna system guarantees trouble-free operation for years. It is easy to increase the number of "security channels" just by adding next cameras and Terra mdx420 R82518 DVB-T modulators.
- option A - power is sent together with the data on pairs 1/2 and 3/6
- option B - power is sent on pairs 4/5 and 7/8 (unused in Fast Ethernet networks, in the case of Gigabit Ethernet the pairs are used both for data and power transmission).
The power supply unit may implement both or just one of the PoE types, while remaining compliant with the standard. So, the powered device must therefore support both modes, however, as it turns out in practice, not all end devices are fully compliant with the standard. This may be the reason for the lack of compatibility with some PoE power supplies.
Before providing the supplying voltage, the PoE power supply unit tests the connection. The current is limited to milliamperes and is applied to determine the actual type of the PoE implemented in the powered device (with the help of characteristic resistance of about 25 kΩ used for this purpose in the device). In addition, this procedure allows for checking the continuity of the line. After selection of the suitable PoE type and switching on the supplying voltage, the power supply unit constantly monitors the load.
DIPOL offers high quality ULTIPOWER PoE switches. The switches compliant with 802.3af standard provide power supply for PoE devices with type B PoE system.
The alarm input is activated by applying DC voltage (+5...12 V, "high" state) at the pin marked IN, with respect to the ground (COM). There is also the option to activate the input by "low" state (when the +5...12 VDC voltage is disconnected from the IN pin).
The alarm input of a camera can cooperate with various sensors:
- PIR sensor - intrusion detection is performed by detecting differences in infrared radiation (increased temperature) occurring between an intruder/object and the environment
- glass break sensor - reacts to the sound of breaking glass
- door/window sensor - the alarm signal is generated after opening door/window
- smoke or gas sensor (hydrogen, carbon dioxide, methane, butane etc.) - reacts to reduced transparency of the air or an increased amount of the chemicals in the air
Activation of the alarm input can trigger the alarm relay output of the camera (close/open the pair of the relay contacts). Such a switch can control any actuator (e.g. a siren) powered from an external 12 VDC source, with current consumption up to 300 mA.
Types and markings of twisted pair cables.
Acronyms for balanced cables are standardized by ISO/IEC 11801:2002 (Annex E). The information contained in the cable description should have the following syntax: xx/yyTP, where the letters yy characterize individual wires/pairs and the letters xx describe the overall construction of the cable. The xx and yy markings can be as follows:- U – unshielded
- F – foiled (screened with foil)
- S – shielded (screened with braid)
- SF – shielded and foiled
Typical balanced cables:
Typical balanced cables
- U/UTP – unscreened cable
- F/UTP – foil screened cable with unscreened balanced elements
- U/FTP – unscreened cable with foil screened balanced elements
- F/FTP – foil screened cable with foil screened balanced elements
- SF/UTP – overall braid and foil screened cable with unscreened balanced elements
- S/FTP – overall braid screened cable with foil screened balanced elements
- SF/FTP – overall braid and foil screened cable with foil screened balanced elements
We offer the following types of twisted pair cables:
 | IP NVR Signal 2716 K2717 is an economical 16-channel IP network video recorder dedicated for small and medium size IP CCTV systems where the priority is low cost. This standalone NVR with VGA and HDMI outputs can be directly connected to a monitor for live monitoring and playing back archives, without a need for an additional computer. Thanks to embedded Linux OS, the Signal 2716 NVR ensures stable operation and resistance to computer viruses. | |
 | 5/8 Multiswitch Terra MRS-508 R70308 has 5 inputs and 8 outputs, and can directly be used for distribution of signals from one satellite, terrestrial TV (DVB-T), and terrestrial radio (FM and DAB) to 8 outlets. Due to a passive terrestrial path, the signal provided by the terrestrial TV antenna has to have adequate signal level. The die-cast housing provides high screening efficiency by preventing the penetration of interfering signals to the unit. | |
 | Smart TV Dongle Ferguson FBOX A99420 is a microcomputer based on a fast dual-core processor and powerful 3D graphics. It is a solution with a wireless gyroscopic remote control, offering Smart TV functionality to any TV with HDMI input. The unit is intended to play both media from storage devices and the content streamed directly from the Internet. It features, unique in its class, hardware-supported high definition 1080p video decoding via XBMC Media Player. | |
The latest
May 12, 2014 - an interview supported by DIPOL Robot. A short interview (in Polish) with the robot and its constructor - Piotr Wasniowski. The interview was conducted at DIPOL stand during the Elektrotechnika 2014 trade fair in Warsaw.
Worth reading
When to use multimode and when single-mode fibers? It is important to decide whether the future network will be based on multimode or single-mode fibers. For some installers the choice can be not obvious, so we give a few tips on the selection of the cabling.
Multimode fibers can be used only for distances up to 2 km. An individual fiber cannot operate in duplex mode, i.e. at any moment signal can be transmitted only in one direction, so normally two fibers are needed for two-way communication. The maximum transmission speed depends on the length of the link. 1 Gbps data rate can be achieved in the cheaper OM2 fiber. Higher data rates may require the application of the OM3 type... more
Multimode fibers can be used only for distances up to 2 km. An individual fiber cannot operate in duplex mode, i.e. at any moment signal can be transmitted only in one direction, so normally two fibers are needed for two-way communication. The maximum transmission speed depends on the length of the link. 1 Gbps data rate can be achieved in the cheaper OM2 fiber. Higher data rates may require the application of the OM3 type... more
