Beholder Platform

Introduction

Beholder is a modern platform for event detection and alarm triggering, being a part of a solution used for an early detection of various kind of problems, including fire (Fire Detection System).

It uses the most advanced technologies like low-power detectors, communication devices and sophisticated algorithms that process millions of data messages describing the status of the monitored devices and their environment.

It is a composite situational awareness system, analyzing a big number of events coming from various field sensors (physical parameters metering, thermovision cameras, etc.) in real time. Basing on that, the system makes decisions on recognizing a potential problem (like fire) and triggering an alarm.

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Fire threat detection – a specific application

A specific application built on the Beholder platform is a system for early detection and alarming on fire threat for batteries mounted on electric and hybrid vehicles.

The measurements and other data are collected in real time directly from the vehicles and their surroundings, ensuring the continuous safety monitoring and early detection of problems. Basing on that, the system makes an immediate decision about alarming the vehicle dispatcher or any related service.

The system processes and reacts on a combination of events and measurements related to the temperature, its dynamics, environment parameters or occurrence of any additional events e.g., coming from the thermovision subsystem.

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Versions

There are two versions of the system implementation available: Beholder Cloud Basic and Beholder Pro, which enable the most fluid and tailored to current needs to launch the solution.

Beholder Cloud Basic

Beholder Cloud Basic is a basic version of the system, allowing for a quick implementation of a necessary safety level on a few vehicles. It features a low installation cost and provides basic services of monitoring and alerting on threats.
This version is a good starting point for a further step-by-step installation of the ultimate solution. It offers SMS messaging to selected personnel and supports up to 10 sensors and/or 5 vehicles. The entire communication is performed with a single gateway, connected to a computing cloud and Cognimetrica servers via a mobile network.
Once the system and Customer needs grow, the Cloud Basic installation can be easily migrated to the ultimate version Beholder Pro.

Beholder Pro

The important feature of the Beholder Pro version is that it operates within the Customer intranet and is fully independent from any external resources like computing cloud or mobile network providers, which ensures the reliability and responsiveness of the solution.
This version has also no limitations of the Cloud Basic version on the number of sensors, vehicles or gateways or vehicle depots. It implies the scalability (even to hundreds of vehicles), safety (redundancy of system components) and the effective range. With two antennas (gateways) the coverage can extend up to few kilometers, but the safe assumption is about 2 km.
With this version the system provides various notifications: alarms, sirens, information light boards, SMS or automatic phone calls.

Components

The system consists of the following components:

  • Detectors responsible for collecting data from the field. They can be various types of sensors, meters or cameras that send and receive measurement data through the communication gateways. They feature a low energy consumption and long operating range.
  • Communication gateways are the devices responsible for collecting messages from the end devices. They can also convert the messages to standard packets of communication protocols (IP).
  • Dedicated industrial servers responsible for collecting and storing the data analyzed further by the dedicated algorithms of domain applications.
  • Central application, i.e. a collection of algorithms and solutions responsible for reacting on particular events (e.g. detection and alarming on fire threat). It analyzes the data coming from various sources and detects anomalies or potentially dangerous situations.
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Detectors

The key to success in early detection is a point detection. Thus, the dominant source of information for the system are the measurements taken directly from the battery packages in the vehicles. There are always at least 2 detectors installed on each vehicle, and usually there are 4.

Eeach detector is equipped with 2 temperature sensors – contact sensor, measuring the temperature on the battery casing, in the place of the contact with the vehicle, and the ambient sensor, taking the measurements of the surrounding air. Thanks to that, the detector knows where the origin of the temperature increase is.

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As we deal with electric vehicles, including hybrid and trolleybuses, the key assumption is a non-invasive installation of the detectors.

It is performed without any additional cabling, usually by gluing the detector to the selected surface (battery casing). The detector is equipped with a special thermally conductive tape.

The device dimensions are ca. 40 x 70 x 90 mm.

The detectors are fully independent from the vehicle installations, both communication and electric. The power is supplied by the lithium-chloride-thionyl batteries.

The detectors use radio communication with a frequency 868 MHz and the power below 25 mW (the system complies with the SRD EU directive), which means that it does not require any radio license to be obtained by the end user.

The SRD directive imposes strict regulations on the bandwidth usage. The detectors adjust their parameters (e.g., the measurement frequency) to the current situation to save the battery energy and optimize the bandwidth usage on one side, and to react quickly enough to the measurement changes on the other.

The battery life can reach up to 10 years, because the detector optimizes the energy consumption, including the communication frequency. It does not send any data when it’s not necessary and increases the number of messages if a potential risk has been detected.

The effective range of the sensor – gateway communication depends on the antenna type and its placement and can be up to few kilometers.

Depending on needs, various sensor types can be used within the system, but it’s required that they have been certified for that. Currently the certified devices include radio detectors AI-SENSO by In-Lab, Hikvision thermal cameras and others.

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In-Lab AI-SENSO

Fully compliant detectors that can be used in the Beholder installation are AI-SENSO devices by In-Lab.

AI-SENSO is a family of smart battery wireless sensors for measuring selected physical parameters like UV-C radiation, humidity, temperature and others. They can be easily used in the installations of Beholder Cloud Basic and Beholder Pro, thanks to the real time integration.

AI-SENSO detectors are certified for automotive industry, for vehicles produces by leading manufacturers.

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Central software system

In each version of the system, the convenient management software is available. In Beholder Cloud Basic it is available in the external computing cloud only, and in the Beholder Pro version the software is installed on the autonomic local resources within the Client network.

The software is a heart of the system, collecting the configuration tools, and algorithms processing and interpreting millions of messages and measurement data as well as images taken by remote sensors or another alerting devices.

The key features are:

  • AI system for an early threat detection,
  • Continuous monitoring of the entire system status (e.g. detecting any anomalies in system components like detectors or alarm devices),
  • Ability to adjust the procedures for reaction on a threat (alerts, automatic processes, notifications),
  • Configurable alarm procedures and integration with additional devices like alarm sirens or lights,
  • Easy to use management dashboard presenting the current condition of the system.
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Summary

The working temperature for the system is between -40°C and +85°C in case of continuous measurements, and up to ca. +100°C for instantaneous measurements.

All field devices, like detectors, antennas and gateways are resistant to weather conditions and mechanical damages.

In addition to monitoring the fire threats, the system continuously performs the auto-diagnostics to ensure it is always ready to act.