Renesas Connected Lighting Solution Can Tell You Gases in The Room Are Unhealthy！

PublishTime： 2021-03-09 Article Source：Renesas

Build-up of carbon dioxide (CO₂) and volatiles expelled by human breath in tightly closed rooms generate, in part, "unhealthy" air quality. If system could detect the decline in a room's air quality and "warn" people or automatically turn the ventilation up, this would be a great solution. All these rooms have one thing in common, lighting. Many of today's new lighting systems are "connected" for ease of control for color, presence and ambient light detection.

Connected lighting is expected to grow in all geographies, even expanding to older building retrofits. Since lighting modules are so pervasive, it would be logical to add a simple Sensor Module so they could monitor the lighting and "unhealthy" levels of gases such as CO₂. Designers of a lighting system would just need to add a few extra bits of data to the already existing communications infrastructure.

Renesas' connected lighting solution, including air quality and lighting, shows a typical connected lighting block diagram (Figure 1). The sensor array contains an HS3001 for temperature and humidity, a ZMOD4410 for indoor air quality (eCO₂ and TVOC gas monitoring), and an ISL29125 for monitoring ambient light and color control. Renesas also have a ZMOD4510 outdoor air quality sensor for entry ways, streetlights, loading docks, etc. In addition, connectors are provided for optional PM2.5 sensors.

Figure 1. US084 Connected Lighting with Air Quality Solution

The US084 Sensor Module (Figure 2) is available and uses the standard mikroBUS™ click format, allowing it to be used or evaluated with any MCU development kit providing a "Click" socket.

Figure 2. US084-1 Sensor Module

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