Fig. 3 Block Diagram of Mobile terminal of "CTNet" System

CTN–9902GO Mobile Terminal Features:

    • Integrated GSM, ORBCOMM (external devices), GPS and power management system;

    • Over-the-air flash programming;

  • Interface:

    •

    • "AUX" - connector for:

    • Power supply from on-board network of mobile asset (+10 ~ 30VDC);

    • Backup battery with Built-in battery charger;

    • 3 potential (TTL) inputs and 3 outputs (open collector - ΞΚ) for connection to on-board alarm system of mobile asset with expansion possibility of their quantity to meet customer's requirements;

      •

  • "Ant. GSM" - connector for GSM antenna complex connection;

  • "Ant. GPS" - connector for GPS antenna complex connection;

  • "ORBCOMM" - RS-232 communication interface with communicator of ORBCOMM satellite communication system;

  • "Host" - RS-232 communication interface with external devices (Programmer, PC, fax, etc.) for data communication and programming.

    •

 

CTN – 9902G Mobile Terminal Features:

  • Integrated GSM, GPS and power management system;

  • Over-the-air flash programming;

  • Interface:

    •

  • "Phone" - connector for handheld telephone terminal connection for voice communication (option);

  • "AUX" - connector for:

    • Power supply from on-board network of mobile asset (+10 ~ 30VDC);

    • Backup battery with Built-in battery charger;

    • 3 potential (TTL) inputs and 3 outputs (open collector - ΞΚ) for connection to on-board alarm system of mobile asset with expansion possibility of their quantity to meet customer's requirements;

      •

  • "Ant. GSM" - connector for GSM antenna complex connection;

  • "Ant. GPS" - connector for GPS antenna complex connection;

  • "Host" - RS-232 communication interface with external devices (Programmer, PC, fax, etc.) for data communication and programming.

CTN – 9909GO Mobile Terminal Features:

  • Integrated GSM, ORBCOMM, GPS and power management system;

  • Over-the-air flash programming;

  • Interface:

  • "AUX" - connector for:

    • Power supply from on-board network of mobile asset (+10 ~ 30VDC);

    • Backup battery with Built-in battery charger;

    • 3 potential (TTL) inputs and 3 outputs (Open Collector - ΞΚ) for connection to on-board alarm system of mobile asset with expansion possibility of their quantity to meet customer's requirements;

      •

  • "Ant. ORBCOMM" - connector for ORBCOMM antenna connection;

  • "Ant. GSM" - connector for GSM antenna complex connection;

  • "Ant. GPS" - connector for GPS antenna complex connection;

  • "Host" - RS-232 communication interface with external devices (Programmer, PC, fax, etc.) for data communication and programming.

CTN – 9903/BX Mobile Terminal Features (“Black Box”)

  • “Flash” memory 2,4,6,8 Mb (option) for a record of the information;

  • Message standard - NMEA 0183 V2.2 (GGA, RMS), programmable;

    •

  • Programmable Start Up time of a record of the information;

    •

  • Interface:

    •

    • "Host" – standard RS-232 communication interface (9-pin connector) with external devices (PC, Programmer) for data communication and programming, 115’200 bit/s;

    • "AUX" – connector for connection to on-board alarm system (3 potential TTL inputs and 3 outputs ΞΚ) of mobile asset with expansion possibility of their quantity to meet customer's requirements (option);

    • "PS" – 2-pin connector (PWL-2) for power supply from on-board network of mobile asset (+10 ~ 15 VDC);

    • "Ant. GPS" - connector for GPS antenna connection;

      •

  • Backup battery (Li-ion; 7,2V; 1200 mAh) with Built-in battery charger;

SPECIFICATION FEATURES on-board equipment

GPS

Quantity of the receiving channels……12;

Receiver sensitivity ……….…………..-140 dBm;

Message standard………………………NMEA 0183 V2.2 (GGA, GSA, GSV, RMS, VTG, GLL);

Update rate………………………………1 Hz;

Differential remote RTCM V2.1 Message type 1,9;

The accuracy of coordinates definition (technical):

    • without differential correction (DGPS), SA On..….50 - 100 m,
    • with differential correction (DGPS)………..……….5 - 10 m;

Sensor Piezoelectric Gyroscope (For mobile terminals with marking /DR):

    • maximum angular velocity…………………………..+/- 80deg./sec,
    • resolution…………………………….………..……….0,1 deg./sec;

Antenna complex………………………….two active antennas with amplification 26-30 dB.

GSM

Sensitivity of receiving channel……………-108 dBm;

Power of transmitter ……………………………..2 W;

Data transmission speed …………………….2400, 4800, 9600, 14400 bit/sec;

Data transmission modes………………………SMS, DATA, FAX and VOICE (option);

Antenna complex…………………………………. two antennas with amplification 0 dB.

ORBCOMM

RS-232C full handshake (CTN-9909/GO, CTN-9902/GO)

Transmit Freq………………………………….. 148.000 to 150.050 MHz

Receive Freq…………………………………… 137.000 to 138.000 MHz

Transmit Power………………………………… 5W (min)

Data Rates:……………………………………… 2400 bps Uplink,4800 bps Downlink

Power supply

Main power………………………………….+ 10 - 30 V (from on-board network);

Backup power…………………………………+ 6 (12) V (battery)

Operation conditions

Operating temperature………………………………from -40° Ρ to +80° Ρ;

Relative humidity…………………………………………….from 5 to 95%.

The calculation of exact vehicle location is one of the tasks, solved by system. The information on coordinates and vehicle status must be transmitted quickly to dispatcher center. The effectiveness of transmission is defined by two elements: microprocessor modem specially created for operation in GSM/ORBCOMM Network and intellectual controller. One of main advantages of microprocessor on-board application - the possibility of realization of effective communication session protocol. The algorithm of "multichannel" mode of communication sessions by line OBJECT - CONROL CENTER was realized. This algorithm allows effective accompaniment of ample quantity of transport facilities, which transmit messages every second in emergency or on request. The controller performs all necessary functions to control transport facilities within the system, not requiring any interference of the operator or driver, and this in its turn allows location of the transport facility equipment as inaccessible "black box". It is necessary to notice that controller performs a number of rather critical functions for the operation of all system of functions. Thus, it controls data transmission channels, processing of inputs and outputs of telesignalization. These channels are used for control parameters transmission of transport facility: battery status, the estimate of ignition system's regularity, power supply for lighting facilities, siren, doors and hatches position, opening of the container, etc.

Integrated microprocessor modem is included into mobile terminal, which is a specialized device designed for provision of reliable data communication via GSM/ORBCOMM Network. It is well known that the main function of the modem is transformation of information data into signals, convenient for data transmission via Radio channel. In order to provide reliable data transmission, the system uses special protocol with error corrections. Such approach decreases the influence of effects related to Radio signal attenuation, and also eliminates the passage of corrupted information to dispatcher center.

The on-board microprocessor is programmed to perform some key support functions. Controller provides automatic transmission/reception of standard messages for operation in GSM/ORBCOMM Network. Type of status and messages are programmed in conformity with a certain official instructions of services, which prescribe a certain reports and variant of actions in different situations.

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