«KRIK-8K» voice alert system

The 8-channel KRIK-8K voice alert system is intended for the automatic notification of the railway personnel and passengers about the approaching rolling stock and for the transmission of other messages. The device can be installed on any type of a railway station and provides a parallel link between several devices so that they can operate synchronously as an integrated system with multiple control channels.

An important advantage of KRIK-8K is the customizable control of the external driven devices. The system provides cyclic playback of recorder voice messages via any of the eight channels for a set number of times (up to 8 repetitions) when the corresponding contacts of an external connector are closed. The user can set the number of times the voice messages are repeated and the interval between them.

The voice information is recorded via a microphone and the recorded messages can be played back through the built-in loudspeaker with the volume and the line output level control.

An advantageous feature of KRIK-8K is its high quality and reliability combined with simple and comfortable operation and low cost.

Railway crossing safety system

The multifunction system for monitoring the railway crossings occupancy manufactured by TVEMA is designed for prevention of accidents at the railway crossings and collisions of railway rolling stock with cars and other vehicles.

The system performs the following functions:

• automated control of the crossing occupancy after the activation of the crossing alarm system to detect the vehicles which remain there;

• control of the warning lights;

• voice announcements about emergency situations with transmission via a radio link at the frequencies of the train or station radio communication;

• 24-hour logging and archiving of the traffic violations and the acts of vandalism at the railway crossings.

The system is based on the dedicated controller which collects and processes data from the optical sensors and controls quick response systems and devices.

The system uses the upgraded version of IR optical sensors commercially manufactured by SPEK (St. Petersburg, Russia). The outstanding feature of these sensors is their quick response and noise immunity. The sensors guarantee the range up to 40 meters without compromising performance at 99 % of optical loss and withstand high wind loads. The sensor operating temperature range is -40°C to +55°C.

The operation of the system is designed in such a way that when the approaching train signal is absent, the system performs consecutive polling to detect the sensor damage, misalignment or stray lighting. If a faulty sensor is detected, the failure signal is generated.

After the approaching train signal has been received and the crossing gates have been lowered, the system starts to scan for obstacles in the crossing area. If the obstacles are detected, the warning system is activated (the voice annunciator at the crossing, transmission of voice warning to the traffic operator or the train driver via a VHF radio, the operation of the warning lights begins). It is also possible to transmit the video data to the monitor located in the driver cab of the approaching train.

When the train is passing the crossing, the scanning stops for the duration of the train's location in the crossing area. Then the scanning resumes and continues until the crossing gates are opened. The video inspection module provides control of the crossing status and serves as an evidential base in the event of traffic violations of the acts of vandalism in the railway crossing area.

Specialized trucks for the evacuation of disabled people from the subways trains when their accidents

By order of the Moscow metro TVEMA company quickly adjusted release of specialized trucks for the evacuation of disabled people from trains stopped in the tunnel in case of emergency. The impetus for this decision was a disaster on 15 July 2014 that occurred on the stretch between the stations "Park Pobedy" and "Slavic Boulevard" Arbatsko-Pokrovskaya line, which claimed dozens of lives of passengers and where the evacuation of the injured passengers were made using available tools.

At the request of management of the Moscow metro TVEMA company in a short time was developed and manufactured a sample of the specialized truck, which is then successfully tested the joint exercise of underground workers with EMERCOM in Moscow. According to test results the leadership of the Moscow metro, a decision was made to equip all stations with specialized trucks for the evacuation of mobility-impaired people. All were produced 270 specialized trucks and in early August 2014, they were put on all stations of the Moscow metro.

Specialized truck is a lightweight and compact design that does not require special skills from the workforce maintaining it. It is stored in a special Cabinet, and is operated by only one person.