The Internet of Things continues to become "green", and Cypress's minimal energy collection program is receiving attention

The Internet of Things after the Internet undoubtedly indicates a greater development opportunity, and many technology giants have coincidentally laid out the Internet of Things. Some agencies predict that by 2020, the total number of connected devices will reach or exceed 50 billion. The Internet of Things will include many devices in the home, ranging from smart thermostats to wearable devices to smart refrigerators. The long-standing Internet of Things is about to break out. The chart below summarizes the forecasts of the size of the IoT market by various institutions and companies.

However, with the increasing number of connected devices, how to solve the problem of power supply and energy saving is an unavoidable challenge. How to make the Internet of Things become green has become a topic of increasing concern! In the "2016 China ICT Media Forum and Industry and Technology Outlook Seminar" hosted by EEVIA and IC Coffee recently, Mr. Li Dongdong, Cypress Semiconductor Analog Chip Product Manager, presented to the reporters and engineers present on the issue of sensor power supply under the trend of the Internet of Things. The company demonstrated the energy harvesting technology solution and introduced the latest ultra-low power, highly integrated global minimum size energy harvesting chip, which can greatly reduce the number of battery usage, increase the application scenarios of sensor nodes, and make battery-free green. The dream of the Internet of Things shines into reality.


Replace the battery into a wireless sensor network application to expand the "blocking tiger"

"By 2020, there will be 50 billion devices/devices connected to the network, of which more than 5 billion will be wirelessly connected, accounting for 10%-20%, which means at least 5 billion wireless sensors are needed. Power supply. Replacing a huge amount of batteries every year will cause great waste. Environmental pollution and high labor maintenance costs will definitely restrict the development of wireless sensor networks. The power supply problem will undoubtedly become a huge challenge for wireless sensor networks." Li Dongdong explained .

Since the research of wireless sensor network in the late 1990s, it has attracted great attention from military departments, industry and academia in various countries due to its great application value. For example, DAIRYMASTER is a European cheese industry equipment manufacturer that has developed an automatic estrus detection system, Moo-Monitor, which allows cows to be monitored for 24 hours. Once the cow has an estrus condition, Moo-Monitor will inform the farmer of the accuracy. Can reach 88.6%. If the system is popularized in the United States, it can increase the production of cheese by $300 million.

However, replacing the batteries of monitoring equipment for thousands of cows is a nightmare! Making the wireless sensor network work uninterrupted becomes a huge challenge for such systems. In the application of wireless sensor networks, the battery energy of wireless sensor nodes is the most important and most deadly key factor in many constraints.

Using energy harvesting technology to enable wireless sensor nodes to collect energy from the environment, with the ability to supplement energy, so that the wireless sensor node avoids the energy one-way decrement process, and further utilizes energy management and energy transfer technology to achieve the permanent lifetime of the wireless node. The purpose of wireless sensor network wireless use. So, what is the working principle? The wireless sensor node senses the environmental status through sensors such as temperature, humidity, brightness, and pressure. After the microcomputer processes the data, it transmits data to the cloud network wirelessly to complete further energy collection.

At present, wireless sensor networks have been successfully applied to industries, agriculture, smart homes and other fields, bringing good economic benefits. With the perfection of energy harvesting technology, wireless sensor networks will be more widely used. Li Dongdong showed several cases of battery-free wireless sensor node application scenarios using Cypress solar power supply solution:

For example, Misfit previously released the Violet version of Swarovski Shine, the world's first sports sleep tracker that does not require charging or replacing batteries. Users can expose the handle ring to sunlight, LED lights or halogen lamps for charging. It features Shine's main hardware features, including basic functions such as step, sleep quality and calorie consumption detection, and is water resistant to 50 meters. In terms of design, the violet Swarovski Shine dial crystal is a small solar panel that can effectively collect, store and supply power to the equipment.

In applications where industrial, military applications, and environmental monitoring will be equipped with thousands of wireless sensor nodes, it is impossible and impossible to replace the nodes with exhausted battery power. For example, in order to monitor the return of elephant seals from the US East Coast to Alaska, a detector is required on the seals. If the battery is used for power supply, the energy can only provide half the energy consumption, and the energy harvesting technology is obviously better. The power supply method allows the detector to generate electricity from solar and mechanical energy sources while swimming and diving.

Low power consumption, high integration, energy harvesting technology to achieve "green" Internet of Things

Gartner's emerging technology cycle chart released last year shows that IoT has become the most anticipated emerging technology in 2015, and the related IOT platform has also received strong attention. IoT technology will mature in the next 5 to 10 years. The popularity of wireless sensor networks is the trend of the times. It is foreseeable that the limitations of battery power supply will become increasingly prominent. The increasingly mature energy harvesting technology is bound to gradually replace the battery and become the standard for wireless sensors.

The energy harvesting system consists of three parts: energy harvesting, energy control, and energy consumption. With advances in technology, there are numerous energy conversion technologies that enable wireless sensor nodes to harvest or harvest energy from the environment, such as the most common light, kinetic and thermal energy in everyday life. Similar to wireless sensor networks, energy harvesting technology is also closely related to the application environment. Among them, solar cell technology is the most commonly used, in addition to various energy conversion technologies such as vibration power taking, temperature difference power taking, and mechanical motion.

The way energy is converted is different, and the energy harvesting technology requirements are the same. In addition to the low power consumption of the module itself, special application scenarios must be considered, such as where the light is weak, environmental conditions that require space/size, and so on. “Energy harvesting is not simply a matter of connecting solar panels. It also requires a process of calculation and regulation of storage. The magnitude of the calculation is very large. The design of wireless sensor networks based on energy collection, conversion and storage is also very important. Complex, requires simulation technology experience, and the footprint and size are very small. These are the challenges faced by engineers, Cypress is working to help solve these challenges." Li Dongdong said.

He showed Cypress's newly developed ultra-low-power, ultra-high-integration energy harvesting module to the forum audience, which can replace the traditional "Bluetooth chip + antenna mode + coin battery" solution, which can help engineers achieve perfect design, only need A square centimeter series solar panel battery allows the PMIC chip and Bluetooth module in this module to work, making it possible to design a batteryless wireless sensor node that consumes the lowest power and smallest size.


Cypress energy harvesting technology was awarded "CES Top Ten Best Technology"

Cypress's latest energy harvesting PMIC chip and the world's smallest Bluetooth wireless sensor, the size of the human thumb is very suitable for the design of high volume requirements. These two products feature outstanding features: First, low power consumption, current is only 250nA, this data is the world's first; in addition, the product integration is very high, no need to ride any power chip on the periphery.

At the 2016 CES, which was closed not long ago, Cypress demonstrated the energy harvesting module and solar IoT device development kit, which can generate electricity by itself and can be embedded in other IoT applications, listed by the famous journalist Dean Takahashi of VentureBeat. As one of the "Top Ten Technology of CES Exhibition", its impressive innovation strength can be seen.

In addition, in addition to the above 1cm2 solar WSN, Li Dongdong also sent a number of $49 Cypress solar-powered IoT system development kits through Q&A interaction at the forum, which is very helpful to improve the efficiency of developers. Cypress provides technical support for the kit and related designs to maximize the developer experience.

Conclusion

Today, less than 0.1% of devices have networking conditions, and the potential for wireless networking in the future is huge. Cypress's forward-looking vision layout energy harvesting technology field, occupying the Internet of Things. It is foreseeable that the new energy harvesting technology will fly higher and farther on the Internet of Things “window”, and the emergence of market-proven and innovative solutions from Cypress and other companies has made us believe that “Green Internet of Things” is Accelerate!

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