DIPOL Weekly Review – TV and SAT TV, CCTV, WLAN

Monitoring z AI będzie śledził osoby starsze.

Po latach dyskusji i debat, w Australii rozpoczyna się pierwszy test wykorzystania kamer monitoringu w domach opieki nad osobami starszymi. System ten ma za zadanie pomóc w szybkim reagowaniu personelu na zagrażające zdrowiu lub życiu pensjonariuszy sytuacje, jak również zapobiegać złemu traktowaniu pacjentów przez tenże personel. Kamery zostały zainstalowane w domu opieki dla osób starszych w szpitalu Mount Pleasant District Hospital w Adelaide Hills i Adelaide's Northgate House. Na potrzeby programu, kamery CCTV są skonfigurowane w taki sposób, aby wykrywać nadmierny hałas i ruch, ostrzegając tym samym operatora monitoringu o niepokojącej sytuacji. 12-miesięczny okres próbny ma na celu zwiększenie bezpieczeństwa i opieki mieszkańców placówek poprzez zapewnienie większej widoczności zdarzeń niepożądanych i umożliwienie personelowi szybkiego reagowania w zaistniałej sytuacji. Technologia wykorzystuje sztuczną inteligencję do identyfikacji upadków, wezwań pomocy lub nietypowych ruchów. Powoduje to wysłanie ostrzeżenia do operatora w niezależnym centrum monitorowania, które następnie natychmiast informuje personel. Na umieszczenie kamer w pokojach wymagana jest zgoda rodzin i mieszkańców.

The launch of the program has been postponed several times due to public debate and protests by privacy rights advocates. The 12 months to come will show whether introducing monitoring into these areas of privacy is more beneficial, or whether it will prove too invasive to human dignity and simply unethical.

A modern headend – and end-to-end solution for hotels.

When deciding to purchase a TV system, the owner of one of the hotels faced the choice of a suitable headend. A conventional headend distributes TV signals via coaxial cable. Headends converting satellite programs from DVB-S/S2 to DVB-T/ signal are the most popular solutions used in many hotels. Satellite channels can be an addition to the terrestrial television programs or be the only part of the package offered. No need to use more receivers (e.g. satellite receivers) for TVs, which makes this solution particularly attractive for hotels, guesthouses, apartments and hospitals.

One of the hotels in Zlotoryja has been equipped with TERRA compact headend S2C16 R81620 and TTQ-440 R81622 transmodulator. Also, in order to input signals from an external HDMI source to the TV system, the digital modulator MHD003P R86105 has been used. An unquestionable advantage of TERRA system is simple and intuitive web-based configuration and remote management from anywhere in the world.

In the system in question, the decision has been made to use uniform DVB-C standard. The TTQ-440 R81622 transmodulator converts DVB-T signal to DVB-C standard, and the MHD003P R86105 modulator with DVB-C output "allows" to transmit to the system the signal from HDMI source – e.g. an advertisement of optional services or a restaurant menu.

Attenuation of a splice made with Signal Fire splicer.

For many installers the value of attenuation of splices is the key issue when choosing a splicer. The market for splicers is broad and the opinions that can be found on the Internet about a particular model of splicer can be extremely varied. In addition to a number of performance issues, the quality of the splices that a particular splicer makes should be the crucial factor in determining whether it is good or bad. The quality of the splice is determined by its durability and attenuation.

The engineers of DIPOL Technical Department have conducted a test of attenuation of splices made with Signal Fire splicers. The so-called transmission method with a reference measurement was used to do so. For the test, special boxes have been designed that contain about 120 m of G.652D standard optical fiber, terminated with SC/APC connectors on one side. The other end of the fiber remains free – it can be freely unwound and repeatedly alternately spliced and broken. In addition, the boxes are equipped with a splice tray.

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The tests showed an average splice attenuation for a wavelength 1550 nm to be 0.04 to 0.05 dB. The generally accepted standard is to allow splices with attenuation not exceeding 0.1 dB. However, there are factory standards and European standards that allow 0.15 dB or even 0.3 dB of attenuation. For the 1310 nm wavelength, the indications were lower and ranged from 0.00 dB - 0.03 dB.

More photos of the measurement and a detailed description and results of the test procedure are available here.

Manual change of signal type in Hikvision TurboHD DVR.

TurboHD Hikvision DVRs support the HD-TVI, AHD, HD-CVI and CVBS signals. They are "plug and play", which means that connecting a camera, which provides signal in one of these standards, automatically sets the signal type in the DVR. However, it may happen that, after connecting the camera, the signal is incorrectly detected and the image is shown distorted (often black and white). The solution to this problem is to set the signal type manually. This can be done in the local menu of the DVR. From the main menu go to the camera -> analog camera tab and, in the new window, go to the bottom right corner. When the cursor disappears, double click with the left mouse button to pop up a hidden menu. The input signal can be set manually here.

View of the menu for manual selection of the input signal type

Video intercom system for an apartment block.

A diagram of the Hikvision IP video intercom system for a 10-story (40 apartments) apartment block is shown below. Two identical sets of gate/door stations are installed at the gate and entrance to the block which include: main module with a camera (DS-KD8003-IME1/EU G73652), Mifare tag reader (DS-KD-M G73662), keyboard to control the first relay in the station (opening ) the wicket gate and calling individual tenants (DS-KD-KP G73668), and a display module indicating the door station status and allowing to choose s subscriber from the list (DS-KD-DIS G73670). The gate station modules in the fence are enclosed in two surface-mounted frames (DS-KD-ACW2 G74354) with rain shields (DS-KABD8003-RS2 G74373). The entrance gate is controlled by the gate station in the fence (the second relay is built into the main module). The modules at the entrance to the block are enclosed in two flush-mounted frames (DS-KD-ACF2 G74343). The DS-KH6320-WTE1/EU G74001 monitors are installed in the apartments. The entire network is made of two TP-Link T1500-28PCT N29962 24-port switches.

Diagram of a video intercom system for an apartment block

This system configuration is very flexible. Any tenant can be called from the gate station. After receiving the call, the tenant hears and sees the person at the gate and can open the wicket or the gate at any time. The monitors support an intercom function supporting internal calls between individual apartments. Furthermore, each monitor supports the Internet via Wi-Fi for remote receiving and making calls and, if necessary, opening the wicket.

TP-Link Omada SDN platform – central management of network devices.

The network infrastructure configuration and control (SDN) platform Omada integrates network devices such as access points, switches, and network gateways. Omada SDN provides comprehensive management of the entire network from the cloud level. The system allows you to create a highly scalable network, fully controlled by a single system. This results in seamless wired and wireless connections that are essential in hospitality, education, retail, offices and many other industries.

Official Presentation of TP-Link Omada SDN Platform.

Equipment compatible with Omada SDN:

How to integrate IP video intercom system with monitoring The intercom camera can be used as an additional video source in the monitoring system. Recording of the image will give accurate information about the person approaching the gate. High resolution of the camera and a small distance from the person coming in make their face is recorded in great detail...>>>wmore

Connection diagram of CCTV system and analog monitoring.
The signals from the video intercom cameras are recorded on a DVR.

TRISET cables – tailored to requirements