With the rapid development of railway construction towards high speed and high density, the proportion of tunnels is increasing. Various mechanical and electrical equipment, such as low-voltage transformers, have been installed in railway tunnelsElectrical equipment, switches, lighting equipment, emergency lighting equipment EPS、 Fans, drainage facilities, etc. are the material basis for ensuring the safe operation of tunnelsFoundation is an important condition for ensuring the safe passage of trains.
Railway tunnels usually operate in an "unmanned, unmanned" mode. In order to improve the automation management level of tunnel operation and ensure the operation of trainsFor safe operation, for long tunnels (≥ 3000m), tunnel RTUs and electromechanical equipment monitoring systems are usually used to achieve automatic control of railway tunnel electromechanical equipmentAutomated monitoring, scheduling, and management.

application system

tunnelCharacteristics and advantages of RTU

Fully decentralized, small in size, and more flexible in rail installation;

The collection of each circuit does not interfere with each other, and maintenance and debugging are simple;

The device is customized according to requirements and cost optimized;

Strong system scalability and low cost of adding remote control circuits;

Large capacity data storage for easy fault tracing and analysis;

Intelligent collection of data from measuring instruments and other devices, with strong flexibility;

Functional Features

Telemetry function：

Measure phase voltage, line voltage, current, active power, reactive power, power factor, phase, and phase sequence;

The telemetry threshold can be set;

The telemetry alarm setting and time limit can be adjusted;

Telemetry threshold crossing processing and uploading;

Remote signaling function:

Adopting optoelectronic isolation and data dead zone judgment to remove remote signal jitter;

Support single point and dual point remote signaling;

Support remote signalingSOE and COS functions;

Remote control function:

Receive, return to school, and execute remote control commands;

The output hold time can be set;

Each remote control object can be set as a single step reset object;

Electricity measurement acquisition function:

Support the electricity collection of smart meters;

Self start function：

Each template is equipped with a watchdog that can automatically start in case of power on or other abnormal situations;

Fault recording function:

Each telemetry acquisition loop can achieve fault recording function, and at the same time record the relevant voltage and current loops; System fault recording supports fault judgment startup conditions: overcurrent fault startup, fault tripping, and other fault startups. The fault recording conditions can be adjusted;

Remote tuning function:

The device parameters that can be remotely tuned shall not be less than:

Remote control output holding time;

Telemetry change threshold;

Telemetry alarm value and time limit;

Fault diagnosis parameters;

Fault recording conditions;

self-diagnosis：

Self check of various communication functions during power on;

Power on setting value self-test;

Power on clock self-test;

Power on memory self-test;

System database validity check;

Intelligent communication function:

Intelligent acquisition of communication data from other devices;

Data recording function:

Remote signaling displacement record;

Remote control operation records;

Remote telemetry exceeding limit record;

Fault diagnosis record;

Maintenance and debugging functions:

Remote and local maintenance can be carried out, and various operational data, records, and system configurations can be viewed remotely or locally;

Clock synchronization function:

configurableGPS module, capable of receiving software clock synchronization from the scheduling end.

performance parameter

External dimensions

Connection