About the DIGITAL NOSE

ABOUT SNIPHI

Sniphi, a technology startup founded by Antdata, is a leader in digital scent recognition, combining advanced sensors with AI to identify and interpret smells.

Our mission is to develop and promote a Digital Nose Platform that enables the easy and effective implementation of scent and gas recognition solutions. We combine advanced heated sensors with deep expertise in scent chemistry, physics, and AI algorithms to deliver precise and reliable smell-based intelligence.

WHAT DRIVES US

We know that the next revolution in AI and robotics will center around smell. It’s a complex and subtle sense – which is why it has been the last to be digitized. But the potential impact across industries is enormous. Sniphi is leading the way in scent recognition technology.

Sniphi had its official premiere at the Sensors Converge conference in June 2025, held in Santa Clara, California. Download a PDF with the introductory presentation.

OUR TEAM

The development of advanced scent recognition solutions, combining electronics and AI, was made possible thanks to the collaboration of a team of talented professionals from various fields, including IoT Hardware development, Embedded programming, Data Engineering, Data Science, Internet of Things, Mathematics and Chemical Engineering.

DIGITAL NOSE AS A PLATFORM

The Digital Nose is a modular platform designed for easy integration across various environments and industries. It consists of four main components:

gathering data profiles (digital fingerprints) of the gas or scent

analyzing data profiles and recognizing patterns

to ensure reliable data transfer and analytics

to ensure consistent and dependable results over time

SENSORS

The sensor is one of our most innovative technologies. It consists of an IoT terminal (making it an IoT-class device) and a board equipped with temperature-controlled hotplates. By adjusting the surface temperature of the hotplates in time, we can influence their chemical reactivity.

Oxygen particles on the surface react with target gas (scent) molecules, releasing electrons into the metal oxide layer. This reaction causes a measurable change in the electrical resistance of the hotplate.

Gas molecules MOX
sensors arrow
OUTPUT FROM A MOX HOTPLATE
RESISTANCE CHANGE

The electrical resistance depends on the specific composition of the analyzed gases (scents):

  • Oxidizing particles, like NO₂, “provide” oxygen and increase electrical resistance.
  • Reducing particles, like VOCs, “consume” oxygen and decrease electrical resistance.
Oxidixing particles - increased resistance
Oxidixing particles - decreased resistance

By changing the temperature of the hotplate, the sensor generates a unique data profile, which is later used by the AI solution (the digital brain) to define and recognize the pattern of a given gas or scent.

AI SOLUTION (THE DIGITAL BRAIN)

AI solutions recognize data patterns with Machine Learning algorithms. Thanks to this it can create a unique “digital fingerprint” of measured substance, that will be kept in the cloud database.

With a sufficient number of experiments (fingerprints) in the database, the neural network can recognize the scent profile using specialized algorithms.

df_processed_list = []
for i in range(1,folds +1):
  test = df[df[‘fold’] == i]
  train = df[df[‘fold’] != i]

  first_column_train = train.iloc[:, 0]
  first_column_test = test.iloc[:, 0]
  train = train.iloc[:, 1:]
  test = test.iloc[:, 1:]

  train,test = preprocessing(train,test)
  train.insert(0, first_column_train.name, first_column_train)
  test.insert(0, first_column_test.name, first_column_test)

  df_processed_list.append(test)
df_p = pd.concat(df_processed_list)

DATA ARCHITECTURE

All physical and software components are integrated into a cohesive environment using Microsoft Azure cloud services.

Thanks to our composable approach, you can easily train different models and then assemble a ready-to-use solution from predefined components — fully tailored to your specific needs.

Alternatively, you can deploy your trained model directly to our Digital Nose sensor, allowing it to operate as an edge device. This follows the principles of AI on the Edge and IoT on the Edge, enabling real-time processing without relying on constant cloud connectivity.

STANDARDIZED PROCEDURE OF IMPLEMENTATION

Although flexible, the system must be implemented according to a standardized procedure.

The main steps of the implementation are

  1. Definition of the problem and objectives for the final solution
  2. Assessment of the physio-chemical parameters related to the measured substance and the environment of the experiment
  3. PoC implementation that consists of:
    • Configuration of Microsoft Azure Services
    • Installation of the sensors and IoT terminals in the measurement area
    • Data verification
    • AI model training phase using Sniphi’s training app
    • AI model output validation and calibration
    • Building Power BI reporting layer
  4. Roll-out and go live with the solution
    • Full integration with customer’s Microsoft environment
    • Scale-up of the resources
    • Alternative option: deployment of the trained model directly to the sensor (AI on the Edge)
    • Continuous improvement of the solution (the more measurements that feed the ML algorithms, the better)

This procedure may vary for very specific implementation or project, nevertheless, the small steps method and continuous improvement approach is recommended to achieve the best results.