4. Structure and Modules Description

• 1. Introduction

  CENTO platform overview and purpose of this document.

• 2. CENTO Structure

  General architecture: web part and core system components.

• 3. Composition and Description

  Detailed description of all 140 CENTO services grouped by function.

1. Introduction

CENTO is a multifunctional software platform for data collection, processing, and display. It can be used to build various automated systems, including dispatching, electricity and energy resource metering, emergency event registration, power quality control, monitoring, and diagnostics.

This document describes the CENTO structure and lists all CENTO components, each with a brief description.

2. CENTO Structure

The general structure of CENTO is shown in Fig. 2.1. CENTO consists of two main blocks:

• Web part — provides data to users and contains system configuration tools. Information is delivered via a web browser.
• Core of the system — a set of applications running all CENTO components, responsible for collecting, transmitting, processing, and storing data.

Fig. 2.1 – The general structure of CENTO

3. Composition and Description of CENTO Components

3.1. Web Part

The CENTO web interface is built on the nginx web server, web application modules (PHP and executable services), and a web browser on the client side. Key infrastructure components:

• MongoDB — NoSQL database storing system configuration, event logs, mimic diagrams, and their components.
• InfluxDB — NoSQL time-series database storing data collected by the system.
• NATS — message broker for inter-component data exchange.

3.2. The "Core" of the System

The core consists of polling and data transmission services, processing services, and auxiliary services.

Polling and data transmission services collect data from information sources and transmit it to external systems via the message broker. Certain polling services include binary files sed_metrology_XXX.bin — the metrologically significant part containing data extraction mechanisms and register configurations for the polled devices.

Fig. 3.1 – Updating checksums of metrologically significant files

Data processing services receive data from the message broker, process it, and write it to the database. Processing services include metrologically significant files sed_metrology_YYY.bin containing algorithms for calculating measured values. The sed_calc_arch service additionally has sed_metrology_formulas.bin for custom pre-calculation formulas marked as metrologically significant.

Auxiliary services ensure the main CENTO services can perform their functions (license management, watchdog, scheduling, backup, replication, etc.).

The composition of CENTO services for a given installation depends on its configuration and is shown on the System Information tab.

Table 1 — CENTO software components (140 services)