Help people who work in hazardous environment
situational awareness, communication

Concept&Motivation Perception beyond ordinary sight

In many potentially dangerous work sites, such as factories and construction sites, there are many rules and regulations regarding worker safety. Sites like these often feature hazardous objects, such as heavy loads or volatile substances, as well as designated restricted zones which may not be entered due to dangerous conditions.

Project ThirdEye is a device that helps to promote safety in hazardous working areas, like construction sites or factories. Our system locates all users within a controlled site and accurately marks their position relative to hazardous areas and dangerous objects. Users receive audio alarms whenever they enter marked dangerous zones or come too close to dangerous objects. ThirdEye also provides a web application UI that displays the real-time locations of all users, hazardous objects, and hazardous areas on a map.


• Accurate Indoor Positioning

• Audio alert in dangerous zone

• Web app for user interface

• Defend your safety



Use Cases


Competitive Analysis

• Redpoint Positioning is a solution provider for real-time location services (RTLS) and the Redpoint B3 badge is designed to instantly alert clients when they stepping into a hazard zone.

• Our project is looking for achieving a similar safety functionality using DW1000 UWB location chip and also introduce communication feature, allowing clients to talk to each on private channel.

• The pozyx system is a hardware solution that provides accurate positioning and motion information, which consists of 5 modules, of which 4 anchors and one tag.

• This project is very similar to ours as it uses UWB technology and the same DW1000 chip. However, it’s a break our module designed for Arduinos, but ours project is a standalone functioning PCB, which can also provide voice communication capability.

• Infsoft Locator Nodes are modular hardware components that allow a comprehensive detection of different device types and providing location information, enabled through the modular system with different sensors such as WIFI, BLE, UWB, RFID and GPS.

• This product is rather a comprehensive solution that include all technologies to provide location information in all scenarios. As for now, our project focuses on the use of UWB technology, which definitely help reduce the cost.



Name Vendor Estimated Cost Specifications
Decawave Digikey $40

data rates:110 kbit/s, 850 kbit/s & 6.8 Mbit/s ,

Preamble Length: 64 μs~4 ms,

Modulation: BPM with BPSK

Packet Sizes: up to 1023 bytes

Raspberry Pi Amazon $38

1.2GHz 64-bit quad-core ARMv8 CPU,

1 GB RAM,802.11n Wireless LAN,

10/100Mbps Lan Speed,Bluetooth 4.1, Bluetooth Low Energy

Nordic nRF52-DK DigiKey $39

ARM mbed enabled

Bluetooth low energy, ANT and 2.4GHz,

nRF52832 Breakout Sparkfun $19.95

SWD through Nordic nRF52-DK enabled

Bluetooth low energy, ANT and 2.4GHz, SPI, I2C, UART, PWM and ADC I/O support


Name Vendor Language Download
Xcode Apple Swift - iOS app development Apple App Store
Eagle - PCB Design AUTODESK No programming language: GUI Interface Autodesk
ARM mbed mbed C/C++ mbed


Name Specifications
SPI Communication between microcontrollers and the DWM1000 chip
Protocols from Low Power Ranger Project This protocol is used to communication between PCBs and Anchors

Use this protocol to connect to potential web server

Have user access the Web App using this protocol

UART/ USB Communication between Raspberry Pi and other hardwares/ computers.
BLE Communication between control hub and beacons/headsets.
Time Division Multiplexing Communication among headsets/Tags, beacons and control hub.



Headset & Tag


Technical Specifications

• Hardware must be able to track the real-time locations of workers and hazardous objects within the controlled area.

Accuracy of 1 meter or less

• Hardware for headset must be able to fit into a earmuff or a helmet

• The system must be able to notify any worker in immediate danger of coming too close to a hazardous object, via audio alert. The danger radius for each object should be configurable.

Workers who are predicted to enter the danger radius of a hazardous object in the next 3 to 5 seconds or less should also be notified.

• Location tracking system needs to cover a large enough area to be useful for factories, construction sites, etc.

At least a radius of 30m preferred.

• Site administrators must be able to define static “restricted zones” through the use of a client interface, and the system must be able to immediately notify any workers who violate zone restrictions using an audio alert.

Restricted zones should satisfy multi-story or single-story restrictions (i.e. they should respect the Z-axis).

• All components should be resistant to weather effects and have battery life of at least 1 day. Static components, such as hazard tags and location beacons, should have a battery life of at least 1 week (or preferably 1 month or more).

Team Members

Chi Chen
CMU ECE (‘17)
Dan Cheng
CMU ECE (‘17)
Qifang (Charlie) Cai
CMU ECE (‘17)
Ryan Lam
CMU ECE (‘17)