Application Note

In collaboration with lighting equipment makers, we developed a lighting control system that can adjust the intensity and color of interior light. It creates a pleasant interior space and contributes toward energy-saving lifestyles.

Most characteristic of the system is a wireless communication network connecting the gateway (base) and the light fixtures (devices) . One can change the layout of the fixtures or replace them without any constraints on wiring for network connection. The system allows free rearrangement of the fixtures.

The system is capable of adjusting the light fixtures individually or collectively in a group, which allows users to choose the appropriate brightness that serves its purpose for a space. Users can adjust the setting using their mobile devices such as tablet computers. The scheduler provides scene control, allowing automatic adjustment in response to the intensity of outdoor natural light (reducing brightness inside) , or automatically switching off the lights at the preset closing time of facilities. These functions contribute toward energy-saving lifestyles.

Implementation of our proposed solutions: Example 1
Wireless lighting control system

The system monitors ambient temperature and humidity of interior spaces as well as the temperature of particular equipment.

The deployment of a greater number of sensors than traditional systems allows this one to monitor even finer variation of temperature and humidity of spaces, or variation of temperature inside particular equipment. Monitored information is fed into the control system, which ensures the operation of the control equipment in an efficient operating mode.

Since all of the temperature/humidity sensors and temperature sensors are equipped with wireless communication functionality and are battery-operated, users do not need to bother wiring them; users can install the sensors wherever they like.

Implementation of our proposed solutions: Example 2
Multipoint temperature and humidity monitoring system

Murata has provided wireless communication modules thus far primarily for the markets of mobile terminals, home appliances, and automotive electronic components. Accumulated engineering and manufacturing technologies in the miniaturization and height reduction of the devices as well as the RF circuit engineering and evaluation technologies have been applied to reinforce our strategy to expand our product lineup for wireless communication modules.

For the application in IoT, the modules must consume less electricity, facilitate network construction, and provide stable communication quality. Murata has been making efforts to develop hardware as well as software to accomplish these goals. Among these efforts, the assessment of communication quality is especially important; for that, we create an actual network connecting more than 100 modules for assessment, from which results have been fed back to product development.

An example of communication quality assessment.