In our days, worldwide is more often the need to construct tests polygons and facilities for sensor and sensor systems testing. In some cases even entire cities are built as test facility for sensors. The need of test polygons is related to 24/7 data acquisition for functioning of single sensor and/or whole system built from different sensors, as well the embedded software and radio network. Thus, the important information about functionality and sensor or system properties is available. Building the test facility is mandatory final step in the process of building and testing sensors or sensor systems before their implementation and operation.

Here is presented the permanent test polygon for sensors testing and demonstration of a sensor system located within the Center of Applicable Developments at the Bulgarian Academy of Sciences. The subject of activity of the Center of Applicable Developments is development of technology and production of test samples and small series production of scientific-applicable developments of the BAS institutes, as well optional equipment and ware of external users.

3 Sensors from BULCIP system, developed within the European project HOME / 2010, are place in this polygon for testing and demonstrations. Within the European project HOME / 2010, the BULCIP system was demonstrated in NPP-Kozloduy, underground gas storage Chiren, and Sofia Airport. The signal from these three places was monitored in the specially build command center situated in National Defence College in Sofia.

The permanent test polygon BULCIP is used for functional testing of different sensors, as well the work of the whole system in long period of time. The analysis of the collected data was used to find some weaknesses in the system units to improve their work.

The following sensors are installed in the permanent test polygon – BULCIP:
1. Video Cammera with recognition software – recognizes and identifies objects.
2. Combined Microwave Barrier and Passive Infrared – give direction passing object.
3. Passive Infrared sensor – detects objects transition.
4. Seismic Sensor – identifies intruder and distinguish between human and vehicle.
5. Radio Network – Xbee and WiFi.
6. Wireless module for instalationa and local setup of the sensor system – Bluetooth to XBee (Blue-Bee module).
7. Local Command Post Control Center with implemented Data Base.
8. Web Based interface for worldwide (Internet) surveillance.

The radio Mesh Network is used to transfer every registered event from the sensors to the Local Command Post Control Center.
The software receives, visualizes and archives the whole information sent form the sensors, as well the actions of the operator. In the Local Command Post Control Center is situated video server machine where video stream form video cameras are processing.

In the case of penetration of intruder in the area of the polygon the involved sensors send data to the local command post control center. In presented case, two intruders crossing the fens and consistently activate the combined microwave barrier – passive infrared sensor, passive infrared sensor and seismic sensor. Following, they enter the field of surveillance cameras. The incoming information-events are recorded in the data base with following parameters: ID of the activated sensor, type of the alarm and incoming date and time.

The data base is organized that allows considering the history of received alarms and data analysis for a certain period of time.
The Software of the Local Command Post Control Center is equipped with pre-written procedures, provide the operator how to proceed (in threat level situation) for each type of received alarm message.
The software of the Local command post control center can be used for calibration and diagnosis for each sensor of the system. The parameters like power supply voltage, temperature and status of the sensor can be checked. Each of the sensors built in the system can be activated or deactivated according to the operator needs.
The commands sent form the operator to each sensor is also recorded in the data base, which makes possible to evaluate the operator work.
For the need of the remote monitoring and demonstration of the system operation is developed WEB based command software. The WEB based software allows monitoring of each sensor operation as well as alarm data base examination, but it is impossible to interrupt the operation of the system.

The radio Mesh Network is used to transfer every registered event from the sensors to the Local Command Post Control Center.
The software receives, visualizes and archives the whole information sent from the sensors, as well the actions of the operator.
In the Local Command Post Control Center is situated video servermachine where video stream form videocameras are processed.
In the case of penetration of intruder in the area of the polygon the involved sensors send data to the local command post control center.
In presented case, two intruders crossing the fens and consistently activate the integrated passive infrared sensor and microwave barrier, the passive infrared sensor and the seismic sensor.
Following, they enter the field of surveillance cameras.
The incoming information-events are recorded in the data base with following parameters: ID of the activated sensor, type of the alarm and incoming date and time.
The data base is organized that allows considering the history of received alarms and data analysis for a certain period of time.
The Software of the Local Command Post Control Center is equipped with pre-written procedures, provide the operator how to proceed (in threat level situation) for each type of received alarm message.
The software of the Local command post control center can be used for calibration and diagnosis for each sensor of the system. The parameters like power supply voltage, temperature and status of the sensor can be checked. Each of the sensors built in the system can be activated or deactivated according to the operator needs.

The commands sent form the operator to each sensor is also recorded in the data base, which makes possible to evaluate the operator work.
For the need of the remote monitoring and demonstration of the system operation is developed WEB based command software. The WEB based software allows monitoring of each sensor operation as well as alarm data base examination, but it is impossible to interrupt the operation, of the system.

Project Details

The permanent test and demonstration polygon allows the sensor and sensor system long-standing evaluation. The polygon enables the test of sensor hardware functionality and the sensor software recognition abilities at a variety of external weather conditions. The condition of permanent tests enables accumulating consistent data on the change in the operation of each sensor and the sensor system under conditions as rain, snow, fog, very low and very high temperatures, which is impossible in the usual test climate chambers. In addition the polygon allows simulation of various scenarios under different environmental conditions and test functionality of the system, the identification of problems and consequently improves the sensors and/or system vulnerabilities.