Railway suction line monitoring system

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  • The system combines traditional power detection with modern Internet of Things technology, integrating data acquisition, wireless transmission and platform management! It is applied to real-time monitoring of the return channel current value and channel link connection in rail transit!

    System components: acquisition unit, wireless transmission, platform management.

    Acquisition unit: collect electrical parameters, battery status; function is to collect current, frequency / power frequency, battery power status.

    Wireless transmission: NB-IOT is adopted; the function is to interact with platform data as collection and acquisition.

    Platform management: used for receiving, storing, analyzing, and alarming; functions are data browsing/inquiry, issuing commands, setting thresholds, data analysis/management, and alarm.


    NO.

    Type

    Indicator name 

    Specifications

    1

    Accuracy

    Accuracy level

    0.5%

    Temperature drift

    <300ppm/℃(-40℃~70℃)

    2

    Input range 

    Current

    0-1000A

    3

    Power supply 

    Voltage

    2000maH lithium battery +1W solar panel, 3.7V

    Rated power consumption

    Standby 7mA

    4

    Application Environment

    Operating temperature

    -20 ° C ~ 70 ° C, waterproof rating IP64

    Working humidity

    ≤95% (no dew)

    Storage temperature

    -40~75℃

    Storage humidity

    ≤95% (no dew)

    5

    Reliability

    MTBF

    >30000 H

    Isolation voltage

    Input corresponding output: 2500V DC / 1 minute; isolation voltage between power supply and input: 2500V DC / 1 minute; isolation voltage between power supply and output: 2500V DC / 1 minute

    Overload capability

    2 times the nominal input voltage, lasting 1S, interval 10S, repeated 10 times;

    10 times nominal input current, lasting 1S, interval 300S, repeating 5 times

    Electromagnetic Compatibility

    Anti-lightning surge: power supply, input terminal ±4KV; digital port: ±2KV

    Anti-group pulse: power supply, input terminal ±4KV; digital port: ±2KV

    Antistatic: digital port ±8KV

    6

     

     

    Wireless parameter

      NB-IOT

    SIM card type: Telecom

    Supported bands: Band 1/2/3/5/8/12/13/17/18/19/20/25/26/28/66/70

    Bandwidth: 100bps~100Kbps

    Transmit power: <23dBm±2dB

    Acceptance sensitivity: <-139dBm±1dB

    Antenna interface: support SMA antenna interface

    Transmission protocol: MODBUS (customizable)


    1565677963409936.jpg

    1 System purpose: online monitoring, real-time alarm, maintenance-free or reduced maintenance

    2 Equipment power supply: passive (built-in battery)

    3 Monitoring type: real-time monitoring

    4 Data transmission: Internet of Things NB-IOT

    5 Data visualization: divided into two kinds of original data, curve graphics

    6 Device management: positioning function (product, installation address associated)

    7 Alarm settings: with dual power settings

    8 Waterproof rating: IP65


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