Continuous Incubator Monitoring for In-vitro Fertilization Clinic

CLEVELAND - Sept. 6, 2022 - PRLog -- Custom System Monitors Priceless Embryo Incubators

A prominent in-vitro fertilization clinic, that used our Accsense system for cryostat monitoring, was searching for a system to monitor their embryo incubators. The system had to provide continuous embryo incubator monitoring of temperature, humidity, CO2 level, and door openings. Each embryo incubator had a controller that was fitted with an analog output card to provide separate 4-20 mA current signals for temperature, humidity, and CO2 level.

Monitoring System Design

It was determined that there was not a simple off-the-shelf solution that satisfied all of the requirements at a price point that met the customer's expectations for embryo incubator monitoring.  In particular, the requirement to track not just door open events, but to also record the total time the door was open, proved to be challenging. Ultimately, we ended up designing a custom system using several standard I/O modules and a bit of custom programming.

The main components are:
  1. A Brainchild IO-8AIIS Modbus I/O module with 8, 4-20 mA inputs. This module offered a standard RS-485 Modbus RTU interface for communication. This particular model also offered isolated current inputs to minimize the potential for interference between the different signals coming from 3 separate embryo incubators.
  2. A Novus NXprog RAMIX programmable I/O module with 2 universal analog inputs for voltage or current plus 4 digital inputs for the door switches.
  3. A custom Arduino program for the NXprog, which:
    a. Reads the 8, 4-20mA current inputs of the Brainchild I/O module every 10 seconds plus one 4-20mA input connected directly to the NXprog.
    b. Reads the 4 digital input time integrators of the NXprog every 10 seconds
    c. Scales both of these sets of measured data to the appropriate units
    d. Stores the scaled data in externally accessible registers for access via Modbus TCP using the built-in Ethernet port of the NXprog
  4. A custom enclosure with external power and Ethernet connectors and magnetic feet to attach to incubator housing.

This custom system provided a cost-effective way to simultaneously monitor all 3 incubators in the stack and provide the required data (temperature, humidity, CO2 level, and door open times). Measured data can be easily read by the customers monitoring application via Ethernet using the industry-standard Modbus TCP protocol. The system provides the key information that the customer required to optimize their process, maximize the viability of the embryos, and increase the chance of success.

For more information on our Brainchild modules or Novus modules, or to find the ideal solution for your application-specific needs, contact a CAS DataLogger Application Specialist at (800) 956-4437 or visit us at

CAS DataLoggers
Elizabethe Zala
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Tags:Embryo Incubator Monitoring
Location:Cleveland - Ohio - United States
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