4GLTE/3G/2G Αρχεία - Infinite Informatics https://www.infinite.com.gr/case-study-category/4-3-2g/ IoT Solutions, Cloud Software & Autonomous RTUs Wed, 02 Dec 2020 23:20:39 +0000 en-US hourly 1 https://www.infinite.com.gr/wp-content/uploads/2020/11/infinite_SL_0.png 4GLTE/3G/2G Αρχεία - Infinite Informatics https://www.infinite.com.gr/case-study-category/4-3-2g/ 32 32 Earth Fault Monitoring for Power Grids https://www.infinite.com.gr/case_study/earth-fault-monitoring-for-power-grids/ Wed, 02 Dec 2020 23:15:14 +0000 https://www.infinite.com.gr/?post_type=case_study&p=7435 Το άρθρο Earth Fault Monitoring for Power Grids εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

This presentation is dedicated for Earth Fault Monitoring for Power Grids .

Autonomous RTUs: BSC-50D, BSC-50E, ADS-260 SIGFOX, ADS-410.

Read the complete application presentation at,

Το άρθρο Earth Fault Monitoring for Power Grids εμφανίστηκε πρώτα στο Infinite Informatics.

]]> IoT for Structural Engineering & Rail Systems https://www.infinite.com.gr/case_study/presentation-iot-for-structural-engineering-rail-systems/ Fri, 27 Nov 2020 13:06:58 +0000 https://www.infinite.com.gr/?post_type=case_study&p=7270 Το άρθρο IoT for Structural Engineering & Rail Systems εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

This presentation is for IoT technologies for Structural Engineering & Rail Systems.

Autonomous RTUs: ADU-500, ADU-700, BSC-50E, BSC-50D, ADS-260, ADS-270, ADS-410.

Read the complete application presentation at,

Το άρθρο IoT for Structural Engineering & Rail Systems εμφανίστηκε πρώτα στο Infinite Informatics.

]]> IoT for Precision Agriculture https://www.infinite.com.gr/case_study/presentation-iot-for-pprecision-agriculture/ Fri, 27 Nov 2020 13:03:50 +0000 https://www.infinite.com.gr/?post_type=case_study&p=7264 Το άρθρο IoT for Precision Agriculture εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

This presentation is for IoT technologies for precision agriculture.

Autonomous RTUs: ADU-500, ADU-700, ADS-260, ADS-270, ADS-410.

Read the complete application presentation at,

Το άρθρο IoT for Precision Agriculture εμφανίστηκε πρώτα στο Infinite Informatics.

]]> IoT for Water Telemetry https://www.infinite.com.gr/case_study/presentation-iot-for-water-telemetry/ Thu, 26 Nov 2020 17:54:43 +0000 https://www.infinite.com.gr/?post_type=case_study&p=7253 Το άρθρο IoT for Water Telemetry εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

This presentation is for IoT technologies for water telemetry.

Autonomous RTUs: ADU-500, ADU-700, BSC-50E, BSC-50D, ADS-260, ADS-270, ADS-410.

Read the complete application presentation at,

Το άρθρο IoT for Water Telemetry εμφανίστηκε πρώτα στο Infinite Informatics.

]]> Autonomous RTUs https://www.infinite.com.gr/case_study/autonomous-rtus/ Thu, 26 Nov 2020 16:52:40 +0000 https://www.infinite.com.gr/?post_type=case_study&p=7242 Το άρθρο Autonomous RTUs εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

This presentation is dedicated to Autonomous RTUs, devices that are designed to operate autonomously powered by Lithium batteries.

Autonomous RTUs: ADU-500, ADU-700, BSC-50E, BSC-50D, ADS-260, ADS-270, ADS-410.

Read the complete application presentation at,

Το άρθρο Autonomous RTUs εμφανίστηκε πρώτα στο Infinite Informatics.

]]> In situ measurement of soil moisture with SDI-12 sensors https://www.infinite.com.gr/case_study/in-situ-measurement-of-soil-moisture-with-sdi-12-sensors/ Thu, 05 Nov 2020 07:00:20 +0000 https://www.infinite.com.gr/?post_type=case_study&p=5077 Το άρθρο In situ measurement of soil moisture with SDI-12 sensors εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

Soil moisture measurements are important for a number of applications and for a number of different reasons. Applications include land slide studies, erosion, water shed studies, climate studies, predicting weather, flood warning, crop quality and yield optimization, irrigation, and soil remediation to name a few.
Measuring soil moisture is important in agriculture to help farmers manage their irrigation systems more efficiently. Not only are farmers able to generally use less water to grow a crop, they are able to increase yields and the quality of the crop by better management of soil moisture during critical plant growth stages.
In situ soil electrical conductivity monitoring is very important in agriculture because the salinity levels in soil moisture can have dramatic effects on crop health and yields. Agricultural soils over time may become sodic or saline and this may dramatically affect the health and yields of the crops. There are techniques that can remove the sodium to improve soil quality and increase crop production.
Time Domain reflectometry (TDR), Time domain transmissometry (TDT), Coaxial Impedance Dielectric Reflectometry (CIDR) and Frequency Domain Reflectometry (FDR) are the main methods used to measure soil moisture content and electrical conductivity. Most of the soil sensors use the SDI-12 serial protocol, allowing for multiple sensors to be connected to a data logger via a single cable.

ADU-500 Application

ADU-500, a D-size battery powered RTU/Data Logger, can address several SDI-12 soil sensors for a total of 48 measurement parameters (channels). Powered only by the internal 3.6V Lithium Thionyl battery, it can provide 12V excitation for all connected soil sensors. The restriction for the total current draw of the SDI-12 bus is:

(n-1)*IIDLE+IACT < 250mA (at 12V)
where,
n: Nr. of sensors
IIDLE: Sensor idle current (quiescent current)
IACT: Sensor active current (during measurement)

Case study

In the following example, ADU-500 is used to measure and log air temperature, humidity, precipitation and soil moisture. The ultra low power HT200 sensor is used to measure air temperature and humidity. A tipping bucket rain gauge, connected to the unit digital counter, is used to for the precipitation measurement. SDI-12 soil sensors (6 pieces) are connected to the SDI-12 port, measuring soil moisture, temperature and conductivity at various soil depths. ADU-500 performs data collection according to the selected sampling rate (e.g. every 15 minutes). The sampled data is logged and sent to an internet server via FTP, according to the selected sending rate (e.g. every 6 hours). Alert SMS are sent to predefined users.
The Lithium Thionyl battery lifetime is calculated for different sensor types.

Air temperature [°C], -40-50°C
Air humidity [%] RH, 0-100%
Rainfall [mm]
Parameters per SDI-12 sensor Soil Moisture [wfv], Soil Conductivity [dS/m], Soil Temperature [°C]
Nr. of recorded channels 21
Sampling interval 15 minutes
Logging rate 1 (every sample = 15 minutes)
Sending rate 24 (every 24 logs = 6 hours)
Manufacturer Stevens Decagon Acclima Campbell Scientific
Soil sensor Hydra Probe II 5TE / GS3 SEN-SDI CS650 / CS655
Type CIDR FDR TDT TDR
Nr. of sensors 6 6 6 6
IIDLE [mA] 1 0.3 0.015 0.135
IACT [mA] 10 10 / 25 30 45
Warm up time [sec] 3 3 3 3
Measurement time [sec] 2 0.15 0.45 0.003
Battery Lifetime [Years]1) 1.2 5 / 4 2.5 6.6

1) Calculations are based on the sensor manufacturer’s specifications.

Read more at,

 In situ measurement of soil moisture.pdf

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]]> Municipal water pipeline monitoring https://www.infinite.com.gr/case_study/municipal-water-pipeline-monitoring/ Thu, 22 Oct 2020 13:53:09 +0000 https://www.infinite.com.gr/?post_type=case_study&p=6147 Το άρθρο Municipal water pipeline monitoring εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

Pressure in a municipal water system needs to be maintained kept at 0.3 Mpa in order to be able to deliver a proper stream of tap water to homes and businesses. Many water companies all over the world use remote monitoring systems in order to be able to immediately respond to leakages and sudden drops of water pressure.

Requirements

    • Monitor pressure in points of interest in a distributed municipal water pipeline system.
    • Monitor and report data from every pressure point to a central database or SCADA system.
    • Alert immediately on sudden pressure drops threshold limit.
    • Take advantage of a cellular communications network using SMS and GPRS communications.
    • High expandability.

Proposal

Infinite SCOM-100 is a GSM/GPRS Edge RTU designed specifically for remote monitoring systems. Traditional cellular products use polling to request data, which requires a static and public IP. SCOM-100 can communicate with a central database or SCADA system regardless of what kind of IP address it uses over GPRS.

 

 

In addition, it provides real time data from the remote location, which is impossible with a polling system. Moreover users at the central station can issue commands to the remote stations to perform standard control actions because the SCOM-100 supports local functionality, making it a truly PC-free solution.
Traditional polling systems can take up to 3-4 minutes to obtain four different pressure values from four different monitoring sites. The SCOM-100 GPRS communications deliver the information in just a few seconds. Furthermore receive SMS alerts instantly while maintaining GPRS connectivity. SCOM-100 communicates via SMS and GPRS with users, PCs, other SCOM-100 units in M2M all at the same time. The SCOM-100 OPC Server software integrates seamlessly with any SCADA system.

Why SCOM-100

  • All-in-one cellular GPRS quad band solution
  • Real-time data acquisition
  • Easy to implement and maintain
  • Seamless connection to SCADA via OPC server
  • SMS alerts & M2M functionality

Read more at,

 Municipal water monitoring.pdf

Το άρθρο Municipal water pipeline monitoring εμφανίστηκε πρώτα στο Infinite Informatics.

]]> Radio tower monitoring https://www.infinite.com.gr/case_study/radio-tower-monitoring/ Tue, 13 Oct 2020 07:09:32 +0000 https://www.infinite.com.gr/?post_type=case_study&p=5665 Το άρθρο Radio tower monitoring εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

Τraditionally radio tower facilities rely on a PLC with a GPRS modem to provide remote control and monitoring functionality. This approach is low level requires PLC software programming and faces the IP problem. The existence of dynamic and private IP make the attempt to establish reliable and efficient bidirectional communications complex. Solutions with DDNS are simply not adequate and usually cause rather than solve problems.
SCOM-100 is a GSM/GPRS alerting, remote monitoring & control unit with expandable I/O capable to handle demanding applications such as alerting and monitoring of Radio Towers.

Requirements

  • Support GPRS and SMS communications
  • Remote control capability
  • Combine industrial standard AI, DI, DO and have expandability
  • Work with private and dynamic IP address
  • Integrate with a SCADA system via standard OPC communications

Proposal

Infinite SCOM-100 is a GSM/GPRS Edge compatible cellular RTU solution designed specifically for remote monitoring systems. SCOM-100 supports both dynamic and static IP making it possible to communicate with a central database or SCADA system over GPRS. In addition, it provides real time data from the remote location.

 

 

Users at the central station can issue commands to the remote stations to perform standard control actions because the SCOM-100 supports local functionality. SCOM-100 communicates via SMS and GPRS with users, PCs, other SCOM-100 units all at the same time. The SCOM-100 OPC Server integrates seamlessly with any SCADA system.
SCOM-100 is designed to operate extreme conditions with operational temperature at -20°C to +60°C. It has build in 2 analogue inputs, 4 digital inputs with counting capability and 4 relay outputs. It can expand using I/O expansion modules up to a total of DI: 36, DO: 20, AI: 18.

Why SCOM-100

  • All-in-one cellular GPRS quad band solution
  • Real-time data acquisition
  • Easy to implement and maintain
  • Seamless connection to SCADA via OPC server
  • SMS alerts and M2M functionality concurrently with GPRS
  • Low cost expansion I/O modules
Read more at,
 Radio Towers Motoring.pdf

Το άρθρο Radio tower monitoring εμφανίστηκε πρώτα στο Infinite Informatics.

]]> Toll free call access control https://www.infinite.com.gr/case_study/gsm-access-control/ Mon, 12 Oct 2020 08:40:46 +0000 https://www.infinite.com.gr/?post_type=case_study&p=5537 Το άρθρο Toll free call access control εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

More and more industrial and trading companies are upgrading their security systems to include automated gates. Gate access control of parking areas, loading and unloading zones are common targets. ARC-10 GSM Controller, combined with a dedicated PC application for user management, can provide a secure entrance access control to a company’s facilities.

Requirements

  • Low cost user identification without special badges or dedicated remote controls.
  • Unattended gate accessibility.
  • Convenient user management.
  • Remote control capability of the gate accessibility.
  • Tampering alarm via SMS.

Proposal

 

 

Infinite ARC-10 GSM controller provides a secure entrance access by receiving a toll free phone call from a registered user. A special contact, connected to an ARC-10 digital input, can initiate an SMS alert to security personnel, in case of a tamper attempt. Up to 10 power users can be qualified to control (enable or disable) the gate accessibility via SMS and receive alerts from the unit.
The ARC-10 Configurator application can be used to manage a user database and synchronize it with the ARC-10 memory. The PC application communicates with the GSM controller via an occasional or a fixed serial connection. A laptop can be used for occasional connections. RS232 to RS-485 converters can be applied to establish a fixed serial connection from a distant point.

ARC-10 Configurator synchronizes every modification of a database record with the corresponding entry in the ARC-10 memory. In the above illustration, a user’s phone number, which was previously edited in the database, is synchronized, by automatically executing the following 3 steps:

  1. The erroneous phone number is removed from the device memory (CUD command),
  2. The correct phone number is entered (CUN command).
  3. If the commands are executed successfully, the edited record is validated, else the editing is cancelled.

System features

  • Intuitive entrance access, using a mobile phone.
  • Automatic synchronization of the database table with the ARC-10 GSM controller’s memory.
  • Import capability of a user file in the database table with respective updating of the ARC-10 memory (.csv & .txt files).
  • Insert, edit or delete call users (up to 500 entries) or power users (up to 10 entries).
  • Complete ARC-10 configuration and online control from within the ARC-10 Configurator application.
  • Remote control and device configuration options for qualified personnel, via SMS.
  • Enable or disable gate accessibility via SMS.
  • Tamper alarm capability, via SMS.

Read more,

 GSM Access Control.pdf

Το άρθρο Toll free call access control εμφανίστηκε πρώτα στο Infinite Informatics.

]]> M2M Reservoir Level Control https://www.infinite.com.gr/case_study/m2m-reservoir-level-control/ Wed, 07 Oct 2020 08:24:13 +0000 https://www.infinite.com.gr/?post_type=case_study&p=5129 Το άρθρο M2M Reservoir Level Control εμφανίστηκε πρώτα στο Infinite Informatics.

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Introduction

The water level regulation of a reservoir, used for irrigation purposes, is the requirement for an M2M control system. The reservoir is located in an off-grid area, on a hill. A pump house located below the hill, feeds the reservoir from a near river. The system is shown in the figure below.

Proposal

A BSC-50E battery powered RTU with an ultrasonic sensor, is used for tracking the reservoir water level. BSC-50E sends M2M commands to an ARC-10 GSM controller, which controls the pump operation through its relay outputs. The pump automation system (e.g. a PLC) supports the following functions:

Function Actuator / Indicator Action
Start Operation Push button (Start button) Enable Remote control,
Turn Pump ON for t=T1 1)
Stop Operation Push button (Stop button) or
Digital input IN1		 High pulse on IN1–> Cancel system operation
Remote Control Digital input IN2 High to Low transition –> Turn Pump ON for t=T2 2),
Low to High transition –> Stop PUMP)
Thermal protection Digital output OUT1 Low –> Normal operation,
High –> Protection active (Operation cancelled)

1) T1 is the time, depending on the pump flow rate, needed to fill the reservoir from empty state to a level between H and HH.
2) T2 is the time it takes to reach a level between H and HH, starting with water level L.

ARC-10 outputs DO1, DO2 are connected to IN1 and IN2 of the pump control system respectively. The thermal protection indication (OUT1) is connected to ARC-10, digital input 1 (DI1).
On the other side, an ultrasonic sensor (Massa M300) is connected to BSC-50E, analog input 1 (AI1). Two alarm limits are set on the analog measurement:

  • Alarm limit low, which corresponds to level L.
  • Alarm limit high, which corresponds to level H.

The water level is logged every hour. A level switch, indicating the HH water level, is connected to BSC-50E, digital input 1 (DI1).

Operation description

After start up, the pump feeds the reservoir, until the water level reaches the high limit (Level H). In the meantime BSC-50E scans the water level every minute.
On reaching the high limit, BSC-50E sends an M2M SMS, commanding the ARC-10 unit to switch DO2 on. The pump is turned off. At the same time, BSC-50E switches level scanning to a lower rate (e.g. every 15 minutes), to save power.
The pump remains in the hold state until the water level drops, due to irrigation flow, below the low limit. Then BSC-50E sends an SMS, commanding the ARC-10 unit to switch DO2 off. The pump is turned on. At the same time, it switches to higher sampling rate (every minute) to keep track of the reservoir filling.
Once a day, BSC-50E sends the water level logs to a system administrator.

Alerting

If the water level reaches, for any reason, the HH limit, the level switch activates an alarm on BSC-50E, DI1. BSC-50E sends an SMS command to the ARC-10 unit, to switch DO1 on for 2 seconds. The feeding system operation is cancelled. An additional SMS is sent to maintenance personnel, alerting for the malfunction.
In case of pump overheating, ARC-10 sends a respective alert to maintenance personnel.

Battery lifetime

The lifetime of the BSC-50E internal battery (LSH-20) depends on the water feeding cycles per day, as shown in the table below:

Feeding cycles M2M SMS Daily consumption [mAh] Battery Lifetime [Years]
2 4 16.7 2.13
4 8 20.2 1.76
6 12 24.6 1.44
8 16 31.0 1.14
10 20 37.4 0.95

Read more at,

 M2M Reservoir Level Control.pdf

Το άρθρο M2M Reservoir Level Control εμφανίστηκε πρώτα στο Infinite Informatics.

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