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Category Archives: Automation

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How Our IoT Team Partnered with a Europe Based Mattress Retailer to Help Measure Sleep Quality of Their Customers

 

About the Customer:

Our customer is a renowned retailer of mattresses, duvets, bed linen and bedroom furniture in the Europe market.

With a mission to provide the most suitable sleeping equipment for their varied customer base, the products they offer have been instrumental in assuring restful sleep for their customers.
 

Business Challenge:

Our customer envisioned to deliver value-added services along with their products.  In this regard, they launched a Mobile Application. The following are the details:

  • The customer developed an iOS Mobile Application, that collected data from the accelerometer sensors in the phone to monitor the sleep pattern of a user.
  • This mobile app provided a detailed graphical report at the end of the sleep session. The mobile phone is required to be mounted on to a belt that needs to be worn by the user while sleeping.
  • The app monitored the overall quality of the user’s sleep over a period of time.
  • Parameters recorded included the soundness of the sleep and interruptions (if any).

However, in their pursuit to deliver better app experience and improved sleep monitoring and analysis, our customer was confronted with technology-related challenges.

The customer wanted to deliver the following functionalities through the Mobile App:

  • Position Analysis
  • Monitoring of Multiple Sleep Sessions in a Day
  • Better App Experience and Reporting

 

Embitel Solution:

SleepMyWay screenshot - Record

SleepMyWay screenshot 2

SleepMyWay screenshot 1

 

We re-designed the mobile application in order to facilitate the following functionalities:

  • Position analysis is a new feature that has been integrated into the app. The position of the user is monitored by the app throughout the sleep session. The app is configured to monitor 8 positions in total, with a percentage orientation (in each direction) for every position.
  • The app provides sleep analysis reports in text and graphical formats. A sleep analysis report can also be sent to an assigned email ID in a tabular format.
  • The sleep monitoring functionality of the app originally provided only a single report in a day, and this corresponded to the last sleep session. The re-designed app is integrated with the ability to track all the sleep sessions of a user in a day. Separate reports in text and graphical formats can be generated for each session.
  • The app also provides consolidated reports for tracking the quality of the user’s sleep on a weekly basis.
  • The application does not require any initial calibration to start monitoring the position of the user. The phone’s accelerometer is used to assess the orientation of the phone and hence, the user’s position.
  • The user can choose to delete specific sleep data/reports at any time. The analysis view on the app will then be updated with the report for the subsequent or preceding daily/weekly session, based on availability of data.

 

Tools and Technologies


swift

The app was created using SWIFT 5.0 programming language.

 
xcode

The IDE used for iOS app development was XCODE.
 
Redmine

Redmine was used for project management activities and bug reporting.

 
 
 


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Custom Development of Control Room Gateway for IoT enabled solar Tracking System

About the Customer:

The customer, an Indian Subsidiary of one of the Global Pioneers in Renewable Energy generation.
 

Business challenge:

The customer had earlier partnered with us for the development and implementation of IoT based Solar Tracking System.

Some of the key components of the high–efficiency Solar Energy Tracking System developed by Embitel included:

  1. Single Axis Solar Panels and Tracker
  2. Custom-built Field Gateway
  3. Drive and Motor Control Systems
  4. Integration with Off-the-Shelf Control Room Gateway
  5. Cloud Based SCADA system for 24/7 monitoring

This field deployed IoT based Solar Energy Harvesting Solution, designed and developed by Embitel’ s IoT developers, has been instrumental in helping our customer to improve the efficiency of power generation and remote management of their on-field industrial assets.

Also Read: Customer Success Story-  IoT Platform Development & SCADA solution for the Solar Tracking System.

The following block diagram gives an overview of the IoT based Solar Energy Harvesting System

IoT based Solar Energy Harvesting Solution

Image 1 : Block diagram- IoT based Solar Energy Harvesting Solution

However, they found that the off-the shelf Control Room Gateway, which has been integrated into the existing solution, had many complex set of subsystems and features which were seldom used.

Additionally, the off-the shelf gateway device was designed by deploying multiple control Units or Modules for managing specific tasks. All these lead to an additional BOM cost and increased complexity of the IoT Gateway architecture.

Thus, with the aim of reducing the cost of the Control Room Gateway and simplifying the hardware architecture, customer decided to invest in a custom-built control room gateway device.

After having worked with Embitel for the full-fledged Solar Energy Harvesting Solution, the customer  was impressed with Embitel’ s expertise in Product Engineering and Industrial Automation services . Customer had no hesitation in further extending this partnership for the new project.
 

Embitel Solution:

Embitel’ s IoT experts performed a detailed analysis of the functional requirements of the Control Room gateway device.

This analysis revealed that the several components and architecture of the existing Field Gateway, developed by Embitel for the customer, can be re-used for the customization of the Control Room Gateway.

The new Control Room Gateway device basically had to be a scaled-up version of the Field Gateway Device, with additional control features and peripherals.

The re-usability of the existing IoT Gateway hardware and software proved to be a great value-add for this entire project.

Please refer to the following block diagram to get an overview of the Control Gateway Device and various peripherals connected to it.

Control Gateway Device

   Image 2: Block diagram of the Control Gateway Device and the connected subsystems
 
Features of the Custom Built Control Room Gateway:

  • Custom Hardware Development

    Custom hardware modules and peripherals were developed and integrated with the control gateway device to support the following features:

    1. Input/ output module consisting of 48 inputs and 16 output pins. These I/O are used to monitor system status and to control system features like ALARMs and ALERTs.
    2. Transformer parameters: It supports remote monitoring of various transformer parameters such as coil winding and oil temperature.
    3. String Combiner Box: The String combiner box is a device that combines the output of multiple strings of PV modules, and feed the o/p to an inverter. A control board in the string combiner box monitors parameters like voltage, current and communicates the same via Modbus interface. The control room gateway reads these parameters and forwards this information to the SCADA system. In such a setting, the SCADA system will be able to generate alerts about any fault in any of the PV modules.
    4. Energy Meter: The control Room Gateway reads energy generated at the solar power plant via Modbus from the Energy meter and forwards to the SCADA.
    5. Weather monitoring system: The control room gateway device also gathers information related to – the speed and direction of wind, ambient temperature and humidity – from a weather monitoring system over Modbus interface.
    6. Inverter: The inverter converts the DC power generated by the PV panel to AC. The control board in the inverter provides Modbus interface to read inverter parameter. The Control Room gateway reads these parameters and forwards to the SCADA. Control gateway supports both Modbus serial and Modbus TCP/IP and depending on the inverter used, these communication interfaces are configured into the gateway.
  • Software Development:
    Additionally, specific software modules were also created to support Modbus communication , I/O module and analog communication between the Control room gateway device and other systems in the Solar Tracking Solution.
  • Customized HMI:
    The existing HMI and SCADA systems were redesigned to accommodate additional parameters that the Control room gateway device is monitoring.

 

Embitel Impact:

The integration of custom developed Control Room gateway device, as a replacement of the off-the-shelf device, helped the customer  in reducing the overall cost by significant levels.
 

Tools and technologies

  • HyperLynx – Verification of Signal Integrity, Power Integrity, and Thermal Analysis
  • Atmel SAM A5 platform: development of gateway hardware boards
  • QT framework for PC-Application and ATS
  • ModBus over RS-485 and Ethernet
  • Django scripting : SCADA solution development
  • Postgress SQL: SCADA database

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PoC Development for IoT Based Predictive Maintenance of Enterprise UPS Systems

Success Story Takeaway: How Proof-of-Concept approach helped our customer, a leading manufacturer of Power electronic systems, to identify critical design flaws at an early stage & prevent expensive hardware corrections
 

About the client:

A leading and trusted Tier-I supplier of electric and automation systems for Industrial Plants. They were on a mission to design an IoT based Industrial automation solution.

Objective of the project was to develop a custom-designed IoT solution for proactive maintenance of their Uninterrupted Power Supply (UPS) systems for the enterprises.
 

The Business Challenges:

  • The customer observed a critical issue related to the discharge of the batteries during field deployments of the UPS systems.
  • The existing UPS network had no provision to effectively predict the rate at which battery charge was getting drained.
  • Hence, there was a need for an IoT based solution to efficiently monitor the rate of drain of battery charge & enable predictive maintenance of the same.

 

Getting started with PoC:

    The Embitel team met the customer to understand their business requirements & to chalk out  an effective IoT development roadmap.

    During the session, it was concluded that before proceeding to a full scale production right away, a PoC needs to be done to verify the feasibility of the design and find out potential challenges.

    UPS Systems

    UPS Battery Monitoring, Source: flowcontrolnetwork

 

PoC Design and System Architecture:
The PoC stage began with a planning and brainstorming session with the customer, wherein:

  1. Results to be demonstrated at the PoC stage were defined
  2. PoC design including Hardware and Software components was planned out

The PoC development began with 5 sensor boards. Each of these boards was connected to 8 batteries that were to be monitored.

Each of these sensor boards were connected to a single IoT gateway unit .

Two types of sensors that formed the key components of the PoC development were:

  • Temperature sensors
  • Voltage sensors

 

Key Observations & course corrections during the PoC phase:

During the PoC stage, some key issues & potential faults associated with the IoT project development were unearthed.

The early identification of these design and development faults, which were identified to be “Critical”, helped the team to build the most safe and cost-efficient solution to demonstrate the results.

Let us take a look at the key issues that were found during the PoC development:

  1. Accuracy of Sensor Signals: At the initial stage, the sensors connected to the batteries were found to be sending random signals while measuring the temperature and voltage values, associated to the batteries.

    The Embitel team identified the need for more frequent and multiple signals to calculate more accurate readings.

    The measurements were then based on   a “moving average “formula to get the accurate voltage measurements out of the sensor readings.

  2. Need for Better Industrial Grade H/w casing to handle High Voltage Ratings: Batteries in a series configuration meant a need to handle a very high voltage.

    Though initially ignored, the must-have series configuration of the batteries was realized during the PoC stage.

    This sent our teams back to the drawing board and come back with hardware components that could handle high voltage values ( ~ 440-600 V).

  3. Thermal sensors with wider temperature range: The thermal sensors initially chosen for development had a smaller range. The ideal temperature sensor, ideal for the existing set up, had to have a temperature measurement accuracy of around 0.1°C .

    From initial selection of J-type thermal sensors, team decided to change it to K-Type sensors for more accuracy and a wider temperature range.

    The K-type sensor was found to be much more reliable with a wider temperature range (-200°C to +1250°C). It also proved to be capable of producing a more accurate (0.1°C) measurement of temperature.

  4. Error in OS: There was an error in the kernel and threading systems of the Operating system being used. This impacted the communication between the sensor nodes, gateway and the control board.

    The Embitel team did an in-depth analysis of the OS to uncover the real issue at the kernel and device driver levels. We fixed the issue to enable a seamless communication amongst the IoT network components (sensor nodes, gateway, & control board).

  5. Higher Sampling Rate: The customer wanted a higher sampling rate to measure the voltage values of the on-premise batteries. But the microprocessor in use was not supporting such a high sampling rate.

    IoT-MCU
    IoT Microcontroller, Source: Three PM News

    So, our team came up with an intermediate sampling rate that was as close to the customer’s requirement as possible, and one which could accurately reflect the actual voltage and temperature values of the whole sensor units.

 

The PoC Impact:

Doing the PoC before full-scale IoT implementation for battery monitoring & management saved the stakeholders from great deal of expensive hardware and software corrections. The PoC development helped them in:

  • Identifying crucial hardware and software issues and bugs.
  • Finding alternate solutions to reach the set objective
  • Improving the design based on key observations during PoC
  • Avoiding expensive hardware corrections
  • Trimming down the overall development cost
  • Avoiding potential failures & mitigating risks that could stall the project due to a design or technology issue.
  • The key PoC observations and feasibility checks helped our customer in realizing how an investment in PoC is a value addition and in busting the myth that PoC is a waste of time.


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HMI design & Mobile App development for Industrial Drive Controller Application

 

Customer:

One of the world’s most renowned suppliers of industrial drives and gearboxes for motion control, power transmission, rack & pinion applications and servo motors. For more than 8 decades, our customer has been a trusted supplier of quality and efficient Industrial Automation solutions

 

Business Challenge:

  • A PC-based application was being used by the end-users to control industrial drives of the motors connected to the machines, on the shop-floor.
  • However our customer’s internal technology R&D team had concerns w.r.t to their existing features and HMI of the PC-based Industrial Automation application.
  • This PC application was being used by their customers to control industrial drives of the motors connected to the machines on the shop-floor.
  • Operator-centric HMI design and Web or Mobile based solutions are very critical since manual operation of the industrial drives can lead to fatal physical  injuries on the shop floor or assembly line
  • For the existing product line of the industrial drives, the customer had a legacy web-based PC application along with physical controls on the drives and gearboxes.
  • This legacy industrial automation application had a number of limitations:
    • Existing HMI design & industrial automation solution supported limited controls and hence operators were also required to use the physical controls of the drive. This increased the possibility of shop-floor accidents
    • The legacy industrial automation app did not provide effective illustration and visual feedback of the actual working environment and condition of the deployed motors.

 

Embitel Solution:

Industrial Drive Controller Application
HMT-Design

 

  • Our Industrial Automation and Mobility team partnered with the customer for technology workshops to understand the existing processes and pain points.
  • Automation and Mobility team proposed and developed a Mobile App with an operator-centric HMI design, remote monitoring and custom control features.
  • This Industrial Automation Mobile Solution not only provides feedback from the drive controller, but also is used to relay control commands to the drive controllers to adjust position of the motor axes, speed, torque and more.
  • The Mobile App solution for Industrial Drives ensured safer proximity to the actual drives and motors as compared to the legacy PC-application where there is no visual feedback.
  • To overcome the drawbacks of the PC-application that required LAN connection with the industrial drives, mobile app helped operators to connect with drives and motors through highly secured Wi-Fi connection or unique QR codes.
  • Operators can easily identify the industrial drive controllers connected to the Wi-Fi network and control any specific motor at permissible distance from the machine shops.
  • Industrial Drive Mobile Application ensures that operators receive real time feedback from the deployed motors.
  • Our Automation and Mobility developers have designed a highly secure, proprietary and industrial grade communication protocol to enable data exchange between the mobile app and industrial drive controllers.
  • This solution has been designed for mobile operating systems like Android, iOS and Windows.
  • All operator authenticity and validity checks for changing any parameter of the motors have been integrated.
  • All the issues/events are notified to the operator through the mobile application as per the defined priorities shared by the customer.

 

Embitel Impact:

  • This mobile app solution for Industrial Drive application ensures that all motor-related status are visible to the operator in real time, and hence chances of any unintended faulty handling and accidents are eliminated.

 

Tools and Technologies:

  • Software development Languages :Java, swift, Objective C ,CSS, HTML5 and VC++ .
  • Proprietary protocol developed is based on TCP/IP.
  • Development Environment: Android studio, xCode, VS 2012 and Phonegap.

 


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Industrial IoT solution for UPS Battery monitoring System & Predictive Maintenance

 
Customer

One of the world’s most respected and renowned suppliers of electric and automation systems for Industrial Plants. With a strong focus on R&D and quality, over the years our customer has earned the reputation of being a trusted Tier-I supplier of high-quality electric motors and drivers, power electronics equipment, and Uninterrupted Power Supply (UPS)

 
Business Challenge

  • During the latest UPS field deployment tests, a critical issue related to timely maintenance was observed by the customer.
  • The customer had sourced the Valve Regulated Lead Acid (VRLA) batteries from a third-party supplier. The existing UPS network could not effectively predict the rate of drainage of the battery charge.
  • This meant that, as an industrial automation supplier, our customer could not deliver the advantages of predictive maintenance (no downtime and lower cost of ownership) to its clients.
  • Also, due to the absence of an IoT platform solution for battery monitoring and management, any battery failure would have a direct impact on the performance and longevity of the UPS network.
  • The customer wanted to minimize this weakness: monitoring the rate of drain of battery charge.
  • They approached our IoT software development team for an Industrial automation solution.

 

Embitel Solution:

  • Design and development of an IoT solution using industrial grade network of sensors for data collection and battery monitoring.
  • Design and development of a data aggregator and storage system, wherein data can be stored either locally on the device or on an external server.
  • Industrial IoT (IIoT) sensors are connected to the local monitoring unit over a wireless LAN connection to minimize the cabling cost. A backup Ethernet connection has also been designed.
  • IoT SOlution

  • These IoT sensor modules collect the voltage and temperature information from the installed batteries of the UPS.
  • The collected data is packaged and forwarded to the local monitoring unit for decision making. To monitor the rate of battery discharge and ensure predictive maintenance, the system has been designed to calculate the string current.
  • Thus implementing Ohm’s Law as part of the algorithm, the battery monitoring and data analytics software is able to isolate the weakening batteries and notify the local administrator to take appropriate action for predictive maintenance.

 

Embitel Impact:

  • Our client now has the ability to ensure :
    • Zero system downtime due to Predictive Maintenance (PdM) of the in-service UPS
    • Reduction in overall cost of ownership for the clients
  • The designed industrial IoT and automation solution also enabled our customer to address the load balance challenges during the charge and discharge cycles.

 

Tools and Technologies:

  • OrCAD design tools for schematic development, HyperLynx – Signal Integrity, Power Integrity, and Thermal Analysis.
  • Texas Instrument (TI) Industrial Microcontroller
  • Texas Instruments (TI) FreeRTOS for embedded software development.
  • Texas Instruments Code Composer Studio for the development of the local master units and the sensor module units.
  • QT framework for HMI design of the PC-Application and ATS.
  • TCP/IP server for the remote PC configuration.
  • ModBus slave stack for interface with Building Management Software.

 


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IoT Platform Development for a Solar Tracking System

About the Customer:

  • Our client, the Indian subsidiary of one of the Global Pioneers in Renewable Energy Generation, had a mandate to improve the efficiency of their existing open field deployments of solar panels.

 

Business Challenge:

  • The customer had deployed thousands of solar panels on the field. They wanted to increase the overall output by ensuring 100% alignment of the solar panels with the trajectory of the Sun (throughout the day).
  • This increase in the generated power was expected to translate into an improved RoI from the open field deployments.

Why was the existing solar energy tracking system not efficient?

  • The existing solar tracker, that was designed to harvest energy throughout the day, was following a single trajectory. Such a trajectory meant that the orientation of the solar panels (payloads) was not optimized as per the changing position of the Sun from dawn to dusk.
  • As a result, the estimated annual power generation numbers were not as per the expectations.

What was required to achieve the desired RoI from the field deployments?

A network of Sun-Position Algorithm (SPA)-based solar trackers had to be designed to ensure efficient harvesting of the Sun’s energy from dawn to dusk.

Additional limitations of the existing solar trackers:

  • The customer had a limitation with their existing solar trackers – Each tracker could manage only one block of PV-panels.
  • The customer also required a second block of PV-panels to be monitored using a single tracker.
  • This was necessary to ensure reduction in capex and increase system utilization.

The client realized that such a solar tracking system could be designed based on the architecture of Industrial Internet of Things (IoT) and would require expertise in wireless communication protocols, embedded software, hardware design, cloud application and web application development.

After multiple technology workshops and design sessions, our customer developed confidence in the experience and expertise of our IoT developers, designers and Industrial Automation experts.

This marked the beginning of our long-term and successful partnership with the customer.
 

Embitel Solution:

Our IoT and Industrial Automation teams developed the hardware & software for the embedded control systems that were integrated with Solar Panels.

Following are the details of the IoT project:
 

IoT platform development for network of solar trackers:

    IoT-Solar-Tracking-System-SCADA-solution-Embitel-Bangalore-Automation

  • The solar panels were connected to solar trackers (controllers) that changed the orientation of the panels based on the movement of the sun. The motion of the solar panels was regulated by the following input details:
    • Time of the day
    • Time zone
    • Location of the panel (based on GPS coordinates)
  • Our team also designed an IoT platform solution for a network of solar trackers. This IoT based solar tracking system communicated through ZigBee and WiFi wireless protocols and serial communication interfaces.
  • Our hardware design ensured that a network of eight solar trackers can be integrated on a single hardware board.
  • An IoT-enabled master-slave network was designed, wherein a master controller controls up to 24 slave trackers. This master controller also sends consolidated data to the centralized server.
  • We partnered with the customer for end-to-end design and development of the hardware board and firmware software for this Industrial Automation project.
  • The embedded hardware for the Sun tracking system is designed on NXP micro-controller LPC1768 platform.
  • The custom-built Industrial IoT gateway device is a linux based system designed on Atmel SAM A5 platform.
  • Device drivers for all serial communication are RS-485 based half duplex as well as full duplex systems.
  • Communication interfaces between master-slave solar trackers have been designed using industrial grade ModBus Stack.
  • A mesh network, designed using the XBee modules, serves as the primary mode of communication between the master device and the tracker devices.
  • A fallback communication channel has been developed for XBee connectivity, using the RS-485 communication link.

 

Embitel Impact:

  • The designed IoT solution successfully achieved all the objectives of our customer. It addressed their main concerns of efficient power generation and monitoring.
  • The Industrial IoT (Internet of Things) platform also helped reduce the cost of field operations.
  • Our customer was able to increase their field coverage, including the irregular corner and fringe boundaries.
  • There was more than 20% improvement in power output of the plant.

 

Tools and Technologies:

  • OrCAD design tools for schema development, HyperLynx– Signal Integrity, Power Integrity, and Thermal Analysis.
  • Atmel Linux development tool for the master board and Xpresso Eclipse IDE plugin for the tracker boards.
  • ModBus over RS-485- ModBus Stack in Master mode from Silas.
  • QT framework for PC-Application and ATS.


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IoT for Home Automation – Custom Gateway, Cloud and Mobile App

Description

Design and development of IoT Home Automation architecture with following components:

  • Sensor networks – installed to capture data from lights, AC, blinds, AV units, doors, and more
  • Custom IoT gateway device – to connect sensor networks to cloud backend
  • Cloud backend – for data analytics
  • iOS/Android App and web-dashboard – UI and front-end to facilitate human and machine interactions

The system demonstrates:

  • Home automation scenario which comprises sensor networks [lights, AC, blinds, AV units] that interact with mobile app [iOS, Android] or web dashboard via the custom IoT gateways and the cloud, using MQTT.
  • The sensor networks convey a wide range of home device information (temperature, humidity, ambient light, human proximity) that is transmitted over various wireless communication protocols like Infrared, Bluetooth, Wi-Fi, EnOcean, Zigbee.
  • This information is broadcast to the cloud for data analytics and data in actionable format is displayed on smart handheld devices for the end-users.

This is how the system works:

  • The custom gateways act as a mediator between the sensor networks and the cloud, providing connectivity, security and control.
  • The cloud backend, built using Python and Django, runs applications that analyze data from the sensor networks to collate and relay valuable information that can be used for decision-making.
  • The interface that gives the end users control of the system is accessible through the app on smart devices [Android, iOS] or web dash-board. The UI provides one-touch control of single or group-actions.

System Architecture – An Overview

IoT-system-architecture

Tools and Technology:

  • Sensor networks designed based on ZigBee, EnOcean, Bluetooth and Wifi protocols/technologies
  • Custom gateway hardware and software design to enable compatibility between sensor networks and end-user devices
  • Design, development and integration of cloud-based SaaS. Data analytics that make predictions possible
  • iOS/Android App and a web dashboard that delivers ‘delight’ to end-users through our intuitive UI/UX

Features (snapshot):

  • The system includes multi-action settings for automation of more than one device for an event
    Sensors that support automation [door sensor, proximity sensors, beacons, etc.] are used to trigger multiple actions. For example, when the proximity sensor detects that you have crossed the range/perimeter, the AC and lights will be switched off, and the blinds will be opened.

To know more details about the features and capabilities, connect with us at sales@embitel.com.


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Real Estate App

Description

The main purpose of the app is to manage real estate and municipality complaints/error reports, etc. The app works in conjunctions with the web system previously developed to handle error reports.

Client

Helsingborg Municipality Dept.

Features
  • Registering error reports with attached photos
  • Error reports stored in server
  • Error message list
  • Options to send email and make call to contacts
  • Managing error reports
  • Sending locally stored error reports to the database
Tools and Technology
  • Tools: Xcode 5.1.1
  • Operating system: ios77 or above
  • Language: Objective C
  • Database: Coredata
  • Third party plugins: Reachability, ProgressHUD, KissXML, XML Reader
Iphone-Interface
Iphone-Interface
app-for-real-estate

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Vue Remote – Cross Platform

Description

For placing 3D objects in a captured image or live feed, and to play related videos on image detection.

Features
  • View device contacts
  • View contacts’ uploaded images using Xamarin mobile API and Parse
  • View contacts’ location
  • “Beep” mobile remotely for location
IM-app-ios-android
Tools and Technology
  • Xamarin
  • C#
  • iOS, Android, Windows
Iphone-Interface
Iphone-Interface
Iphone-Interface
parse

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Vue Power – Cross Platform

Description

A cross-device, cross-platform home appliances power usage app

Features
  • Home appliances power usage chart
  • Monthly electricity bill and consumption chart
  • Charting in iOS/Android
  • SOAP services
  • JSON parsing
vue-power
Tools and Technology
  • Xamarin
  • C#
  • iOS, Android, Windows
Iphone-Interface
Iphone-Interface
Iphone-Interface