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Nr 23/2012 (June 4, 2012)
The beginning of a revolution in medical care.
Isonas, a British company, announced that in collaboration with Fujitsu and Tolven companies it had developed the world's first wireless medical monitoring system based on cloud computing, compliant with the guidelines of the European Medical Device Directive (MDD).The system consists of network procedures for recording and analysis of medical data and certified sensor LifeTouch HRV011 continuously measuring five vital parameters and providing them wirelessly in real-time: Heart Rate (HR), Respiration Rate (RR), Blood Pressure (BP), Pulse Oximetry (SpO2), and Temperature (T). Other sensors can be easily added to the network.
The system can be used both for large groups, for example, all residents of a city, and in some hospitals. Currently, practical tests are conducted on a group of hospital patients in the Netherlands, the system will soon be testes in the UK and India.
The LifeTouch HRV011 sensor is one of the elements of the certified wireless medical care system based on cloud computing
source: www.isonas.com
New developments associated with remote medical care are also visible in the U.S.A. In May, the FCC (Federal Communications Commission, agency that regulates the rules for the use of radio frequencies in communication), approved the technical studies on the assignment of radio spectrum for wireless monitoring of patients. The spectrum for MBAN (Medical Body Area Network) will be allocated between 2.360-2.400 MHz. The final approval of the standard is planned for 2013.
The new technologies have to incorporate two principles: to provide the patient with basic medical supervision at the appropriate level and reduce the costs, compared to conventional systems. Additionally, through online monitoring and analysis of the data doctors can immediately react to potential threats to the patients.
"Engagingly about Antennas" - 11th edition. This photo competition started on June 1.
The rules of the competition and pictures from previous years
We invite you to participate!
The rules of the competition and pictures from previous years
We invite you to participate!
A cell site on the Atlantic Ocean
Janusz Pirzanski
Janusz Pirzanski
The preview with Google Chrome is started similarly to that with IE. When first run, the browser loads a plug-in that should be saved and installed. The user does not need to change any Internet settings.
- smaller number of power supplies and connections to 230 VAC power network (a number of multiswitches is powered via signal lines) - lower installation costs and energy consumption,
- lower system failure rate achieved by the installation of the central power supplies in well ventilated places with adequate humidity (locally powered multiswitches are often installed in small, poorly ventilated boxes or in overheated attics) - lower maintenance costs.
Dedicated splitters and taps enable two-way distribution of power supply between active components of Terra systems (multiswitches, amplifiers). So, it is possible to supply the components from various sources:
- MSR multiswitches with built-in power supplies with 21 W power capacity (one 5-input multiswitch consumes 2.5 W, 9-input multiswitch - 4 W),
- power supplies R71465 connected to MSV multiswitches, MS-554 R70554, or SA-511 R70511 and SA-911 R70911 amplifiers.
The appropriate solution can be found for each network topology. The figure below presents the possibilities of providing voltage over H lines (18 V) via the inputs and outputs of Terra SS-504 and Terra SSQ-508 splitters.
Possibility of passing DC voltage between the inputs and outputs of the SS-504 R70515 splitter (on the left) and SSQ-508 R70520 splitter (on the right). The both splitters are equipped with switches changing the power transmission paths. In SS-504, the switch at ON position runs current through "H" paths to both branches. In "OFF" position it is possible only within one path. In the case of SSQ-508, there are four possible combinations of its two switches, for different configurations of the connected multiswitches..
A modern approach to multiswitch systems is presented in the article: Designing SMATV systems with SatNet software from TERRA
Components for high-speed fiber-optic link.
An installation company was to deploy a high-capacity link between two server rooms in the same office building. The required data transfer was 1 Gbps, over a distance of 200 meters. The investor has chosen optical solution based on gigabit ULTIMODE optical media converters and indoor distribution cable ULTIMODE IDC. The cable has been split into fibers inside a fiber optic panel mounted in a 19'' rack cabinet, which have been connected to pigtails with mechanical splices KeyQuick.
Components of the fiber optic link in the building
List of devices and accessories for building the optical link:
- Transmission line Indoor Distribution Cable ULTIMODE IDC-8SM (8x G.652.D fiber) L7508
- Transmission line termination Universal Mechanical Splice KeyQuick10 SC/UPC SM L5753
- Active devices Media converters M-203G (1 Gbps throughput, max distance 20 km) L11025
Fiber Optic Box (19") ULTIMODE MT-024 L5024
Fiber Optic Splice Tray: ULTIMODE P-21 L5521 for ULTIMODE MT-024
Single-mode Adapter ULTIMODE A-511S (1xSC to 1xSC) L4211
Back focus in CCTV cameras.
There are situations that after installation of a lens to the camera, the focus is not good. It is more probable at extreme zoom settings. The countermeasure is to adjust the distance from the sensor to the rear of the lens. This regulation (called back focus) is usually possible with the use of a special ring secured by a screw. This adjustment should be carried out at the maximum aperture, which protects against the risk of loss of focus at night or in low light. Another requirement is the shortest focal length and focus set to infinity.It should be noted that such adjustment should be done only when necessary, as in practice these situations are rather rare.
Megapixel video surveillance system with Sunell cameras.
The owner of a workshop decided to install an IP CCTV system there. The contractor was DIPVISION company. The system was to provide megapixel images of the sensitive parts of the shop: the gateway and courtyard with parking lot, entrance doors, fences and their immediate vicinity.The requirements of the investor were as follows:
- high-quality megapixel images,
- maintenance-free operation,
- stable and reliable platform,
- remote access to the images from the cameras and the archives on NVR,
- possibility to connect additional cameras.
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To meet the above conditions, the installer used Full HD cameras Sunell K1630 plus megapixel lenses ClearHD 2.8-12 mm M2270, and NUUO NVR Titan K4204. All the devices are connected to the network using PoE switch, which directly feeds power to cameras placed in Marathon M5406 housings. Due to problems with installing cable in a part of the plant, one camera is connected to the network wirelessly, using access points ULTIAIR 423KC N2301.
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The archived 2MP images from the cameras can be zoomed on the monitor screen showing details that would be indistinguishable in an analog CCTV system. The IP CCTV system does not require an operator - it is completely maintenance free. If necessary, the recordings as well as the live images from the cameras can be viewed using client application or web browser, from anywhere in the world. There is a possibility to buy licenses for additional channels on the NVR that can handle even 64 5-megapixel cameras.
PoE even easier!
PoE switch TL-SF1008P is a desktop device enabling smooth data transmission in 10/100 Mbps Ethernet networks. Its eight RJ45 ports support auto-negotiation function, four of them provide power over Ethernet (PoE function). The switch automatically detects PD devices compliant with IEEE 802.3af standard and provides them with power supply. This feature allows the user to expand the network coverage in areas where there is no access to AC power lines/outlets and to employ access points, IP cameras, IP phones, etc.The switch has the priority function which helps protect main functions of the system in case of overloading. The maximum power consumption (by all the PoE devices connected to the ports 1-4) cannot exceed 53 W. In case of overloading, the switch will cut off the power to devices connected to ports with lower priority.
Distinguishing features:
- Four PoE ports (each of them ensuring communication and power supply for a network device via a single UTP cable)
- No need for installation or configuration
- Max capacity of each PoE port: 15.4 W
- Total PoE capacity: 53 W
- Support for (PD) PoE devices compliant with IEEE802.3af standard
- Support for bandwidth control in full duplex (IEEE802.3x) and a back-pressure function in half-duplex mode
- Support for auto-learning and auto-aging, 1k MAC address entries
- LED indicators providing information on status/speed/activity/PoE
Typical application of the PoE switch
New products offered by DIPOL
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Worth reading:
How to create "private" DVB-T multiplexes composed of satellite channels? TERRA MMH-3000 headend offers the ability to create digital multiplexes (DVB-T or DVB-C) that can be composed of any satellite channels, even from different transponders and satellites. As compared to most competitive solutions, Terra headend allows for more efficient use of bandwidth and channel capacity.
The set of RDC-311 R817102 and TRX-360 R81709 modules converts satellite channels into a DVB-T multiplex. Each of the RDC-311 R817102 modules receives a selected satellite transponder...
The set of RDC-311 R817102 and TRX-360 R81709 modules converts satellite channels into a DVB-T multiplex. Each of the RDC-311 R817102 modules receives a selected satellite transponder...
The configuration of the modules used to convert DVB-S/S2 channels into DVB-T multiplex
Central powering of CCTV cameras. Security cameras installed in homes, small stores etc. are usually connected to the system using coaxial cables with two power wires, such as CAMSET M5995 or (over longer distances) CAMSET 100 M6100. The cameras can be powered from a central location with a stabilized power supply...
View of the ZK-65 M18294 power supply with 9 fused outputs
Arranging optical fibers in RACK panels. Optical enclosures are used in FTTX networks as distribution panels and frames. An important feature that should be addressed when selecting fiber optic boxes/panels is the possibility of convenient arrangement of fiber in splice trays and easy access to all components for maintenance purposes. Splice trays should fully protect splices and guarantee at least the minimum bending radius for the fiber used...
