Railway suction line monitoring system
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) |
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