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Sistema de Gestão - Myriad Counter

MYRIAD COUNTER

MONITORING AND ACCOUNTING OF PEDESTRIAN TRAFFIC

Originally developed during the COVID-19 pandemic to address the need for social distancing recommended by health authorities, the MYRIAD Counter has outlived it as a non-intrusive system that enables monitoring flows and patterns of movement, duration, presence and distancing of pedestrian traffic.

The MYRIAD Counter operates through the distribution of a set of WiFi® sensors, which can be installed anywhere with access to electrical power and communications. This sensor network can also be supported by the street lighting infrastructure by attaching the sensors to connected luminaires.

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Population density

Estimated in real time to maintain social distance.
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Non-intrusive technology

Passive listening of electronic equipment in space, eliminating the need to install additional software.
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Anonymity guarantee

It does not identify any user or store personal information, guaranteeing the privacy of the information.
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Traffic optimization

Allows to identify, measure flows and movement patterns.

APPLICATIONS

The MYRIAD Counter is installed in IoT devices applied to luminaires, lamp posts or other types of infrastructures to measure population density as well as pedestrian traffic flows and patterns in locations such as the following:

SOLUTION ARCHITECTURE

The system is based on passive listening to electronic equipment (mobile phones, tablets or smart watches, among others) and is autonomous, eliminating the installation of any software and the use of third-party sources of information. The collection and processing of data is secure and anonymous.
The MYRIAD Counter has a distributed component of Internet of Things (IoT), meaning the devices that are placed in the luminaires, and a Cloud component for management and visualization of the information collected and treated regarding the population’s density and flow movement.

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DEVICE INSTALLMENT

The device can be installed in any luminaire, with NEMA socket, in the street lighting infrastructure or, independently, in any suitable support with access to electricity.

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PASSIVE LISTENING

Passive analysis of the radio spectrum, listening to electronic equipment such as mobile phones, smart watches, and others.

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ANONYMOUS DATA COLLECTION

By ``listening`` to the various issuers, in their proximity, it anonymizes the data of the issuer, through hashing, ensuring that the system recognizes it without knowing who it is.

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CLOUD MANAGEMENT

The system collects equipment information, aggregates it into unique events and based on georeferenced information and the unique identifiers of issuers, creates a people density map that assesses and gives real-time alerts of agglomerations or violations of distance safety.

The Myriad monitors population density and can also identify and measure movement flows and patterns (such as the number of unique visitors, most frequently used routes, and daily or weekly variations, among others), thus enabling the optimization of high-traffic area management in cities.

With Bright Science’s central control solution for intelligent management of street lighting fixtures, it is possible, in a non-intrusive way, to map and estimate in real time, the density and counting of people in dynamic blocks, alerting and giving the alarm when the recommended density is exceeded. This is a suitable solution to provide municipalities, entities that manage public spaces, security forces and others.

From a computational and network resources point of view (telecommunications) it is very light, allowing for a very economical solution with low operating costs.

From a technical point of view, MYRIAD Counter can locate at least 75% of devices within a radius of 100 meters from their location. The data update takes between 1 and 15 minutes and may vary depending on the volume of data obtained or the rate of precision / convenient agglomeration.

The devices have a modular electronics structure (power supply, communications, processing, and operating system) and a Wi-Fi / Bluetooth antenna responsible for sensing (namely in person), to capture communications from electronic equipment and identify them through the respective MAC Address.

By “listening” to the various transmitters located in its vicinity, it anonymizes the data of the issuer (MAC Address) but ensures that the system recognizes it without knowing who it is, through hashing. For the Cloud, the device never communicates the MAC Address, just a number (hash) that allows the equipment to be identified between pairs (nearby sensors) without allowing the MAC Address to be recovered, thus guaranteeing anonymity.

In a second processing stage, the system collects data from the devices, aggregates it into unique events, and based on georeferenced information and the unique identifiers of the emitters, creates a population density map capable of providing real-time alerts when density levels are considered excessive.

Sistema de Gestão - Myriad Counter
Sistema de Gestão - Myriad Counter

TECHNICAL SPECIFICATIONS

The MYRIAD Counter integrates multiple approaches to event detection within a platform that monitors population density and circulation flows in a given space — without compromising the privacy of the individuals present.

The proposed challenge was to achieve a high flexibility combined by the relationship between the use case and the evolution of developments with more than one communication technology to address future technologies. The modularity in the solution design, allows us to enhance the hardware reuse of the constituent components, both in the development processes, as in the different test and production scenarios, maintaining common structures and hierarchies.

The modules designed at the hardware level are power meter, power supply, main processing unit, IoT communications unit and acquisition (sensor) and processing unit.

The addressing of the physical radio layer at 2.4GHz is carried out through the inclusion of an OEM module, allowing to obtain accelerations in hardware such as demodulation and digital signal control.

The architecture of the developed firmware takes advantage of generic libraries and the promiscuous mode of operation in which access to the decoded data frames is absolute (without filtering). With this level of abstraction, direct access to the RSSI signal level of the identified communications, the range of frequency channels used, and the content carried in the network protocol of the IEEE 802.11 standard is achieved.

At the level of the sensor device, the defined architecture allows multiple communication options, having been implemented in this case two types: LoRaWAN® and GSM / 2G.

In the case of using LoRaWAN® technology, restrictions are more sensitive to data volumes (in the order of tens of bytes) and to greater latency.

  • Minimize the impact on the use of the communications network.
    Deduct a management model based on variable time sampling, appropriate to the memory capacity of the sensor’s microprocessor and two alternative information structures, in which it is possible to aggregate information locally in meters. The information is compressed whenever the method becomes efficient (depending on the quantity and frequency of the values to be transmitted).
  • Ensure the consistency, authenticity and anonymity of the data collected.
    In the second point, hashing techniques and combined cyclic redundancy verification were applied to reduce and derive identifiers, making them anonymous and guaranteeing data integrity at the same time.

The interface allows to map and estimate in “real time”, the density and count of people in blocks / areas / shapes that can be dynamic. When a certain parameterized density is exceeded, it gives an alarm.

As a secondary objective, the system should measure flows of people, for example unique visitors, most used routes, daily and weekly variations and others.

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CONTACTS







    2025, BRIGHT SCIENCE - Estudos de Engenharia e Ensaios, Lda
    The images presented are for illustrative purposes and may differ from the final product.
    LoRaWAN® is a registered trademark of the LoRa Alliance®.