Privacy Concerns, Begone

YugenFlow does not have the usual people-tracking privacy issues, as it is unable to actually determine who the person in question is, or any of their personal details. We have even verified this with a local privacy commissioner.

How? The sensing is based on a temperature reading from a low-resolution thermopile, which is unable to determine anything besides if a person has passed below the sensor in one direction or the other. This makes it perfect for any human sensing project where privacy is important.

How Does it Work?

The sensor can be used in two modes:

PUSH - The sensor sends a stream of data where it provides a number in the range [-2. 2] to indicate how many people have passed and in which direction (two people moving in opposite directions might result in either 0 or +1 and -1).

PULL - An application can read the internal three counters that contain the number of people that have passed in a given direction, and the difference from the last time the counters were reset.

Features & Specifications

YugenFlow will come in two versions:

YugenFlow: Integrated This sensor comes with a fully integrated ESP board and additional firmware so that it can be connected to a Wi-Fi network. It can send data via a MQTT protocol or via a TCP protocol. Code examples (python, golang and C++) as well a complete golang application server will be provided that use the native TCP protocol.

YugenFlow: Grove This sensor communicates to an host board (e.g. Arduino) via a grove connector using an Arduino library, which will be provided.

YugenFlow: Integrated:

  • Dimensions (L x W x H): 86 mm x 86 mm x 42 mm (with casing)
  • Mains power supply: 220 – 240 V, 50 / 60 Hz
  • Sensor Technology: Low-resolution Far Infrared
  • AI Hardware Support: ESP32-C3-WROOM-02 (ESP12F on the picture)
  • Indoors/Outdoors: Indoors
  • Detection angle: 110 deg along the entrance
  • Connectivity:
    • Wi-Fi
    • Bluetooth
  • Protocols:
    • MQTT
    • IFFT
    • TCP Socket
    • Others on request

YugenFlow: Grove:

  • Dimensions (L x W x H): 20 mm x 25.7 mm
  • Mains power supply: TTL 3.3 V (grove standard)
  • Sensor Technology: Low-resolution Far Infrared
  • Indoors/Outdoors: Indoors
  • Detection angle: 110 deg along the entrance
  • Connectivity: Grove UART