Ordtech

    Submarine Battery Monitoring System OMI-BMS2

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    Ordtech manufactures a retrofit system OMI-BMS2 for any type of submarine battery, provided it is using 2 Volt elements, which permits monitoring of the charge level of the battery. The system is compatible with most types of submarines and is already in operational use. It requires no modification to the battery system and does not affect any of the operational or functional parameters.


    OMI-BMS2 system is capable to monitor the voltage of each cell of a cluster of accumulators (480 pcs) of the submarine and to record the Charge and Discharge curve of each cell. Use of the system offers the advantage of reliable measurements without the probable human errors and also the ability to record data onto a computer. The system is classed as an intelligent system and enables the ability to issue Alarm Signals to the user when there are deviations from specified values of the battery manufacturer.

    The expansion capability of the system ensures possibility to integrate measurements of other non parameters of the accumulators cluster (battery) such as: Temperature, Output Current, Electrolyte Level, etc. The system offers the following benefits: elimination of the need to have "man-in-the-loop" (which is the current practice), reliability, rapid measurement, monitoring of specified vs actual curves, issue of alarms, etc.
    In comparison manual measurements registering and recording requires 1.5 hours while OMI-BMS2 system requires few miliseconds.

    HARDWARE
    Measured Parameters:

    Cell Voltage 0 – 3 Volts
    Reference Voltage 3 Volts
    Precision of measurement 16 bits (1.52 10-5 Volts)
    Maximum sampling rate 1MHz
    Differential Voltage (measurement ability) YES
    DC Input Current 1 nA max
    Sampling Capacitance 10 pF max

    The system is capable to measure voltage difference at the poles of each cell (+ and -). Differential measurement can be performed between any two cells in the cluster. Total cluster voltage is expressed as the sum of the measurements of each cell.


    Microprocessor controlled system (interior)

    SOFTWARE

    Software standard version enables presentation onto a monitor screen the measured values of each channel and also plots graphs. Measurements are recorded in ASCII format. There is however the ability to change according to End User Customers requirements into others such as Access, Oracle, etc.


    Cell Discharge graph