TV-SAT, CCTV, WLAN Dipol Weekly Review

Artificial intelligence that recognises vehicles from all perspectives.

Researchers at Oak Ridge National Laboratory (ORNL) have developed advanced software using artificial intelligence to analyse traffic and recognise individual vehicles based on data from drones, surveillance cameras and ground sensors. The system is designed to detect abnormal traffic patterns that may be indicative of illegal activity, including the transport of hazardous or even nuclear materials. The results of the research have been published in the journal Future Transportation. The basis of the algorithm's operation is the long-term observation of traffic in order to determine the so-called 'pattern of life', i.e. the standard behaviour of vehicles in a given location. Once the system knows what normal traffic looks like, it can quickly detect deviations from this norm, such as unusual nighttime truck traffic in a location that normally only operates during the day. Such anomalies can indicate suspicious or illegal transports.

The new system differs significantly from existing vehicle recognition solutions. While most existing models require similar viewing angles, ORNL's algorithm can identify the same vehicle regardless of perspective, distance or image quality. This means that the view of the vehicle captured from the drone can be correctly matched to the footage from a street camera or ground sensor. High performance was achieved through an extensive neural network training process. The algorithm was taught on hundreds of thousands of images from surveillance, drones and computer-generated data from 3D vehicle models. The dataset included different makes, types and vintages of cars, as well as varying lighting and weather conditions, including night footage and low-resolution images. In addition, data collected by drones that recorded vehicles from different angles, including in situations of partial obscuration or image interference, were used.

During testing, the system was tested on 10,000 image pairs, achieving an efficiency of more than 97 per cent. The algorithm is not only able to match images from different perspectives, but also to analyse long-term traffic patterns and track individual vehicles based on minor characteristics such as stickers or damage. Even if a vehicle takes a different route each time, the system is able to detect its repeated visits to the same location. Although the technology has been developed to support security and counter illegal transports, its applications are much broader. In the future, the algorithm may be extended to include data from non-visual sensors and also used in monitoring maritime and air transport. This shows that intelligent traffic analysis based on artificial intelligence is becoming an increasingly important tool in modern monitoring and security systems.

Layered installation of SIGNAL PRO multiswitches.

Layered installation of SIGNAL PRO multiswitches is a way of building RTV-SAT systems in which two multiswitches are mounted in parallel. Each multiswitch serves its own "layer" of subscribers, but they all receive the same input signal from a QUATRO-type converter. Dedicated brackets are used to mount them correctly, and one of them is UCH PRO 1 R69985. This bracket allows fast, stable and orderly mounting of two multiswitches in telecommunication cabinets, as well as on flat surfaces in a two-layer system. Thanks to its design, it provides adequate distance between the device and the substrate, improving air circulation and facilitating the routing of coaxial cables. Its rigid construction guarantees stability even with a large number of cables fed into the multiswitches, reducing the risk of stress on the connectors.

Updating the firmware in the door station of a 2-Wire HD video door entry system.

Up-to-date software for the individual components of a video door entry system is usually a guarantee of trouble-free operation of the installation. We are talking about both basic functionality and, above all, the use of the equipment in more specific scenarios.

The firmware of the DS-KD7003EY-IME2/A G73647 gateway station can be updated by activating the AP (Access Point) mode on the gateway station and logging on to it via a computer with a WiFi interface. The latest firmware for the door station should have been downloaded and unpacked beforehand and saved on the hard drive of the PC. To activate the AP mode, press the left call button on the door station for 10 seconds. The activation of the mode is signalled by a short beep. The mode is active for 30 minutes with the possibility of extension by the user. To end the AP mode manually, press the left call button for 15 seconds. The door station will signal this with a double beep. When AP mode is activated, a new WiFi network will appear with the name "AP_device serial number" to which you must connect. Logging into the device is then possible by entering the address https:www.apv.com in the browser window and entering the login details (login: admin, password: given on the back of the device). To update the firmware, go to Maintenance and Security -> Update, indicate the path to the previously downloaded and unzipped firmware with the file name "digicap.dav" and select Controller/// as the type of device to be updated.

Powering the camera directly from a fibre optic media converter.

Fibre optic cables form the core of the cabling of many monitoring systems. They are usually chosen where camera points remain a considerable distance from the monitoring centre.

In a situation where the camera point includes 1 camera, its implementation usually takes into account the use of a sealed box, in which the media converter is placed together with the power supply, PoE power supply and a box/housing protecting the place of fiber optic splicing introduced into the box.

DIPOL offers ULTIMODE L1302 media converter equipped with PoE power supply function connected from the RJ45 interface side of the device. This saves space in the airtight box and simplifies cabling. The media converter is compatible with 802.3af and 802.3at standards. So it will successfully power any IP surveillance camera available on the market.

Converting video from HDMI to an IP network stream.

The HDMI connector is currently the most commonly used connector for sources of various types of multimedia. If there is a need to transmit an HDMI signal over a distance greater than 30 m (the maximum length of an HDMI cable) or in a location where a dedicated cable has not been laid, it makes sense to use a suitable medium converter that allows the signal from the HDMI source to be transmitted over a cable type suitable for the case.

Signal HD HDMI to IP converter H3614 enables the user to connect high-definition (HD) signal to a receiver (TV set, monitor) equipped with HDMI interface, via CAT5e or CAT6 twisted-pair cable, using multicast transmission.
The compressed signal rate at the transmitter output is approximately 30 Mbit/s. A suitable receiver is required to decode the signal correctly - viewing the image on a PC equipped with a network card is not possible.

The IP signal coming out of the transmitter can be fed to an Ethernet switch, e.g. N29915, to distribute to a larger number of receivers. The maximum number of receivers is 253. There must not be more than one transmitter in one network. In order to connect a larger number of transmitters, a VLAN (Virtual Local Area Network (VLAN) - a computer network logically separated within another, larger physical network) must be used.

An additional receiver used to work with the H3614 transmitter can be found under code H3614. The hardware version of the receivers is important - it must be the same as that of the transmitters (information about the hardware version can be found on the bottom of the device).

AI-5 PRO splicer - even better fibre positioning. The Signal Fire AI-5 L5872 splicer available from Dipol has been upgraded to the PRO version. The key change is the addition of 2 motors responsible for even more precise positioning of the fibres before they are joined. This allows the splicer to position the fibres more effectively relative to both the jacket and the fibre core...>>>more