"No battery required, no wiring required, no maintenance required." EnOcean "wireless communication technology with these features is the best way to access all kinds of data in the areas of infrastructure management and healthcare." Semiconductor company Roma holds the idea that EnOcean The company's wireless communications technology, to carry out the business of acquiring big data. EnOcean was founded by former Siemens employees in 2001 as a fabless supplier of semiconductor products. Although it is a venture, but its strength should not be underestimated. The EnOcean Alliance, an industry group that promotes EnOcean technology development, has more than 300 member companies around the world, including approximately 30 Japanese companies, including Murata Manufacturing Co., Ltd., Omron, and Sunshine Telegraph. Has been used for more than 250,000 buildings The reason why EnOcean technology is adopted by most enterprises is that "EnOcean is obviously superior to other wireless communication technologies in the sensor-oriented network technology," said Tomori Taniguchi of ROHM Research and Development Division. The biggest advantage of this technology is that it does not require a battery (Figure 1). EnOcean technology was developed specifically for sensor networks that require much less energy than other wireless communication technologies. Specifically, the power consumption is less than 1/10 of ZigBee, less than 1/100 of Bluetooth and less than 1/1000 of WiFi. Figure 1: The basic building blocks of the EnOcean product Equipped with features such as energy conversion and sensors, the wireless sensor module requires no battery. EnOcean not only consumes less energy, but also features other wireless technologies that make use of energy harvesting (environmental power generation). The ability to convert motion, vibration, temperature, light, etc., into wireless communications. Therefore, EnOcean can not use the battery. EnOcean's market has taken shape. Europe and the United States as the center, including schools, offices, airports, stations, factories, etc., now has more than 250,000 buildings using this technology * 1, more than 100 companies have introduced more than 1,000 Products compatible with EnOcean technology (Figure 2). Compared with the past wireless switches, these products have no need for built-in battery and so on. Figure 2: EnOcean product example 1 Japan's office buildings, shopping centers, factories, etc. have also begun to adopt. For example, the use of EnOcean technology lighting switch is the use of energy generated by the switch wireless transmission of signals generated without the battery will be able to work; the detection of open-close doors and windows sensor is the use of indoor light power generation, wireless transmission switch information, nor the battery . "No battery required, no wiring required, no maintenance required." EnOcean "wireless communication technology with these features is the best way to access all kinds of data in the areas of infrastructure management and healthcare." Semiconductor company Roma holds the idea that EnOcean The company's wireless communications technology, to carry out the business of acquiring big data. Prioritizing Support for Platinum Bands At a time when many companies are launching products that use EnOcean technology, it is remarkable that Rohm developed EnOcean technology. In October 2012, Roma became the promoter of the EnOcean Alliance. Including Roma, there are only nine promotion enterprises in the world and only one in Asia. In other words, Roma is the core of a huge market in Asia and has ample room for its strength. In fact, in April 2013, Roma started selling EnOcean products to customers in Japan and the rest of Asia. To this end, the company is now vigorously developing the use of platinum with excellent transmission characteristics of the band, which is EnOcean 928MHz band products. In accordance with the standard requirements, the current EnOcean products in Japan need to use the 315MHz band. When using the 315MHz band, the communication distance of EnOcean products is about 30m. Although the communication distance is far from ZigBee (about 15m), Bluetooth (about 10m), WiFi (10 ~ 15m), but there is no decisive difference. If you use the 928MHz band, communication distance can be extended to about 100m. And, for the EnOcean product in the 928MHz band, "Roma currently has priority in sales" (Taniguchi Go) * 2. The company's goal is to begin volume production by the end of 2013. In this way, Rohm's product is clearly differentiated from other companies that run EnOcean products. 2 Roma is actively promoting the 928MHz band as EnOcean standard as a promotion company, which is estimated to give the company a head start. Aim for infrastructure monitoring purposes  In addition to adopting the new frequency band, Roma has also envisioned a promising use of EnOcean technology for capturing big data, such as the monitoring of infrastructures such as bridges and highways. That is, a large number of devices such as accelerometers that use EnOcean technology are installed on these infrastructures to measure data such as vibration values ​​* 3. 3 Once an abnormality is detected, a detailed inspection and maintenance can be carried out immediately. EnOcean technology, which requires no batteries, is the ideal choice for sensors installed on the infrastructure. Because "human-friendly infrastructure does not allow the sensor battery to run out of service, but maintenance can become cumbersome if batteries are to be replaced frequently in order to avoid such situations" (Rom). EnOcean technology is also faced with the use of infrastructure problems Even using the 928MHz band, so that the communication distance of 100