A Polish research group has developed a new system that takes advantage of a radiating cable (leaky feeder) as a transceiving aerial providing radio communication between rescuers and a head of rescue action. The system is designed to work in explosion-hazardous area regardless of the poor radio-waves propagation conditions. Voice communication is achieved using intrinsically safe radiotelephones. The researchers are looking for partners for co-operation.

One of the main goals of the system developed by a Polish research group is to ensure radio communication in explosion-hazardous area regardless of poor radio-waves propagation conditions. Wireless communication between a rescuer and a rescue action centre is realised by intrinsically safe radiotelephones and a radiating cable (leaky feeder) used as a communication channel.
The system enables:
- Voice communication between rescuers and the rescue action control centre
- Transmission of physical and chemical parameters of the atmosphere
- Transmission of biomedical information for the purpose of monitoring the rescuer's state of health
- Transmission of high-quality video signal directly from the action area
The central part of the system is an electronic module mounted in portable casing. This module provides:
- Radio communication between rescuers
- Wire communication with the rescue action headquarters
- Visualisation and storage of acquired information concerning the atmospheric and biomedical parameters
- Direct visual monitoring of rescue action area (by means of displaying video image)
The central electronic module also has an autonomous power source enabling revision of the stored measurement data in case of failure of the main power supply. Transmission of radio signals is realised with usage of a radiating cable (leaky feeder) acting as a transceiving aerial. The cable is wound on reels and is unrolled and expanded successively along the rescue action area. Reels have built-in bilateral amplifiers to regenerate the radio signal. These regenerating amplifiers are remotely powered via the radiating cable from intrinsically safe power supply located in the rescue action control centre. Voice communication between rescuer and action headquarter and data transmission of measurement signals from detector module is achieved with use of portable and intrinsically safe radiotelephones. Transmission of the video signal from video camera to the rescue action headquarters is realised by means of specialised transceiving equipment placed in the camera housing. Main tasks performed by the detector module are:
- To measure methane, oxygen, CO, CO2 in atmosphere
- To measure temperature, humidity and air pressure
- To detect the rescuer's movements and body temperature
- To warn (optically and acoustically) in case of exceeding alarm threshold of any monitored parameter
- To store acquired measurement signals
The detector module is equipped with LCD (liquid crystal display) display that can present values of all measured parameters.

Innovative Aspects:
- Introduction of the portable multi-parameter atmosphere analyser and biomedical signals monitor
- Introduction of the heavy-duty high-end camera for live video transmission of rescue action in explosion-hazardous areas

Main Advantages:
- On-line monitoring of physical and chemical atmosphere parameters and rescuer's state of health.
- Live-broadcast from the rescue action area to the rescue action headquarters, which considerably increases rescuers' safety and reliability of rescue operation.

• Data Processing / Data Interchange, Middleware
• Signal Processing
• Sensory/Multisensory Technology, Instrumentation related to construction technology
• Measurement Tools
• Fire Safety Technology

• Chemical industry
• Electronics, microelectronics
• Information processing, information systems
• Materials technology
• Measurement methods
• Medicine, health

• Other data communication components
• Other data communications
• Other Communications Related
• Electronics Related Equipment
• Other Medical/Health Related
• Exploration Services
• Coal mining
• Other Industrial Products (not elsewhere classified)

• Technical Co-operation
• Commercial Agreement with Technical Assistance