HRS-I Sensor

From WikID

ADS Group 32

Product: Office Lamp
Abstract Prototype: The Moodlight (Movie)
Sensing technology: Wearable sensors
Chosen technology: HRS-I Sensor


The HRS-I Module

The HRS-I (Human Recording System) sensor is an innovative and communicative health monitoring system that was introduced in January 2010 by WIN (Wearable Information Networks) Human Recorder Co Ltd. The device can measure information about the human body like body surface temperature, body movement and electrocardiographic signals.

Technology capabilities


  • Small and light wearable device
  • Transmitting data wirelessly to a cell phone or computer
  • Transmitting data in real time
  • Communicates using a 2.4 Ghz radio transmitter
  • 25 Hours of recording on internal FLASH memory (depends on version)
  • 120 hours of measuring on one single charge
  • Collects information using three sensors; Acceleration, Temperature and ECG sensor
  • it can connect to sensors for heart rate, brain waves, respiration and many other important health indicators

Technical summary

The HRS-I sensor will be available in two slightly different versions. One will be outfitted with a 2.4 Ghz radio transmitter but no memory (Wireless HRSI-I), while the other one will only have FLASH memory to store the collected information (Memory HRS-I).

Wireless HRS-I Sensor:

Table Wireless HRS-I

Memory HRS-I Sensor:

Table Memory HRS-I

Typical application fields, domains and products using the HRS-I

The HRS-I is designed for health monitoring. It is therefore likely that the expected users will be companies operating in the health care sector. For instance hospitals can analyse the fluctuation of a heartbeat period of a patient that just had heart surgery.

The working principle

HRS-I attached to chest

The HRS-I basically is a large sensor that combines information coming from three integrated but different sensors:

1. ECG (electrocardiography) sensor

This sensor measures electrical signals produced by the heart. This way for example the rhythm of the heart can be recorded and analysed. It can measure over 200 times per second.

2. Acceleration sensor

This sensor measures movement. The sensor used in the HRS-I has three axis, X, Y, Z and can detect movement up to around 3g.

3. Temperature sensor

As the name implies, this sensor is used to measure temperature. In the HRS-I the measured temperature is that of the surface of the human body. It can detect temperatures ranging from 0 –60 °C with an accuracy of 0.5°C. The temperature can be measured every second.

The gathered information can be send wirelessly to a mobile phone or a pc, or can be stored on the onboard 32Mb FLASH memory (depending on the version ). When send to pc or phone (either wirelessly or via wire), special software converts the recorded signals into usable information (e.g. graphs). The user can also view the raw data.

Data flow of the HRS-I

An Abstract Prototype was made in the form of a narrated movie. The concept presented with this AP uses the HRS-I for collecting data about the user. The assignment was to improve a desk lamp using ubiquitous technologies. Click on the following link to watch the movie:

Abstract Prototype Moodlight (Movie)


Further reading

Back to: Wearable sensors

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