Scheme ideas for multiple RFID technology applications

IoT designers often encounter long-term deployment issues.Examples of energy harvesting, including a new type of solar energy harvesting device produced by Maxim, may beBatteryPromising addition to the group.

Although it needs to be equipped with high-density batteries, high-efficiency power converters and low-power electronic products, the Internet of Things is deployed for long-term services (IoT) Equipment remains a complex challenge. In order to power the Internet of Things devices, designers are faced with power consumption problems that focus on solving three specific operating states: static, steady-state, and pulse/burst operating modes.

For example, in a fire alarm, it’s better to deal with smaller steady-states through primary battery chemistryCurrentIn this case, the shelf life can be reasonably inferred based on the total integrated power requirements of the device relative to the energy density of the primary battery.

However, it may be difficult for designers to quantify long-term energy requirements for IoT devices that change modes between the three states. Maximenatgrated hopes to solve this challenge with the recently released solar energy harvesting solution MAX20361.

Energy harvesting for the Internet of Things

Energy harvesting technology combined with rechargeable (secondary) battery cells can capture multiple potential power sources and convert them into useful forms of electricity for IoT devices.

The basic structure of solar photovoltaic cells.

Some common sources of collected energy include:

hot

Piezoelectric and electrostatic

kinetic energy

Solar energy

Maxim launches “Minimal Solar Energy Collection Solution”

Last week, MaximIntegrated released the MAX20361 single/multi-unit solar collector with power tracking function, announcing the “smallest solar energy collection solution” on the market.

For space-constrained devices (thus limiting battery size), Maxim claims that its solution is 50% smaller and more efficient than previous designs.

MaximIntegrated said that MAX20361EVKIT provides designers withtestOpportunities for the latest chipset features.

Frank Dowling, head of MaximIntegrated’s industrial and healthcare business unit, said: “This device provides exciting possibilities for a new type of supplemental power supply that can continuously charge the device’s battery.”

Compared with the closest competitor, the new energy harvesting solution is said to be 50% smaller in size and 5% more efficient.

“For example, if you can only harvest 30mW of solar energy using a 300mAHr battery system per day (usually running for three weeks), then you can extend the operating time by more than 50%.”

Save energy for transportation tracking

For transportation tracking services (e.g.LoRaWAN wireless network services) for supply chain management companies, IoT with longer running timesensorBecome more attractive.For example, members of the LoRa Alliance TagoIO andSemtechCompanies such as these can all benefit from the energy harvesting design developed by Maxim Integrated.

However, transportation analysis is not the only service that benefits from solar energy collection technology.

Electronic clothes: fashion or fake?

Wearable devices are another market where researchers are studying the potential uses of solar energy collection. The goal here is to develop a “self-sustaining device” that can be worn on the human body.

A wearable device for solar energy harvesting developed by researchers PetarJokic and MicheleMagno.

Especially when electronic products enter the closet, whether for fashion purposes (for example: flashingLEDUgly Christmas sweater) is still out of function (such as charging the mobile phone in the mobile phone)Solar batteryGroup).

In these solar-powered or solar-powered wearable designs, designers mainly focus on the maximum power point.

existopen CircuitVoltage andShort circuitThe maximum power of the solar cell is found at the “inflection point” between the currents.

MaximIntegrated’s new chipset has built-in maximum power point tracking (MPPT), which can improve the availability of stable power supplies for the device.

Developers can use their creativity to support the Internet of Things remotely

The IoT and wearable technology markets will continue to require developers to extend their lifespan.In addition to solar energy, researchers have recently proposed5GCan be used as a power grid. Researchers have developed a flexible high-gain energy harvesting antenna based on Rotman lens.

Whether using solar energy or electromagnetic energy collection, the question is no longer focused on whether designers can integrate these energy sources.Instead, likeMaximIntegration vendors are exploring howElectronic engineeringThe teacher can optimize the sustainable power design.