Take you to the power of smart passive wireless sensors

The Internet of Things (IoT) is rapidly evolving and sensing is an important part of it. Typically, IoT sensing nodes are battery-powered and wired, which prevents deployment in places that are inaccessible or difficult to reach, and frequent battery replacement increases maintenance costs and increases battery and routing. Not conducive to achieving high energy efficiency and high density distribution. To this end, ON Semiconductor has introduced innovative Smart Passive SensorsTM (SPSTM) to eliminate battery and cabling challenges, measuring, acquiring and analyzing data at the edge of the network where wiring is difficult or difficult to replace. SPS, combined with the complete development kit SPSDEVK1, forms a plug-and-play, one-stop complete solution for virtually any environment and end market, from smart home and building applications to industrial, agricultural, transportation and healthcare designers. Save time and costs by eliminating the need to source from multiple suppliers.

Introduction to Intelligent Passive Wireless Sensors

The intelligent passive wireless sensor was awarded the 10th IOTE 2018 “Gold Award” innovation product by the Organizing Committee of China Internet of Things Industry Application Alliance International Internet of Things Expo (IOTE). It is the 100 most representative of the 10,000+ exhibits unveiled this year. One of the sex and innovative IoT products.

Figure 1: Smart Passive Wireless Sensor Receives IOTE 2018 Gold Award for Innovation

The unique and unique feature of the intelligent passive wireless sensor is that it realizes sensing on a single chip and collects energy from the received electromagnetic field signal, thus eliminating the need for a battery and monitoring various parameters such as temperature, humidity, and distance. A breakthrough in sensor technology based on the RFID standard protocol.

Figure 2: Breakthrough smart passive wireless sensor technology

Traditional sensors implement excitation detection on the PCB at each node, usually requiring batteries, microprocessors, and data processing devices. The mass production is expensive, bulky, and requires maintenance. And using ON Semiconductor's intelligent passive wireless sensor, each node implements excitation detection on passive tags, completes power supply, microprocessor and data processing through additional readers, without battery, and supports more readers per reader. The labels are therefore low in cost, and the labels are thin, such as tape, small in size and maintenance-free.

Smart Passive Wireless Sensors operate without the need for batteries or microprocessors using the UHF RFID protocol for difficult-to-reach locations such as underground, in-wall, in-vivo, in-container, toxic or hazardous areas. And space-constrained applications, such as doors, strips, bandages, etc., and where multiple sensors are needed.

Smart Passive Wireless Sensor One-Stop Solution Plug and Play

To support the development of SPS-enabled IoT applications, ON Semiconductor will launch the development kit SPSDEVK1 in August 2018, which will be combined with SPS to form a complete one-stop solution that integrates all the hardware and software required, including reading and writing. Fast configuration and modification of multi-sensor IoT applications with antennas, antennas, various types of sensor tags, power supplies, Ethernet cables and analysis software.

Figure 3: One-stop solution for intelligent passive wireless sensors: a complete ecosystem

Figure 4: Hardware and software required for intelligent passive wireless sensor one-stop solution integration

Intelligent passive wireless sensors for predictive maintenance save manpower, resources and money

Between 2003 and 2015, there were 2,498 power-related fatalities worldwide. According to the International Electrical Safety Foundation, another 30,000 workers were seriously injured by power-related accidents and needed to recuperate to resume work. Therefore, it is necessary to use predictive maintenance solutions to reduce accidents and injuries, saving manpower, resources and money.

In industrial applications, intelligent passive wireless sensors can be used for predictive maintenance of data centers, real-time monitoring of hotspots, temperatures, and humidity levels within servers or power switch units. The sensor's small form factor allows it to be placed on every device in the server rack to continuously monitor the inlet and outlet airflow temperatures, while the wireless function allows the device to correspond to the sensor as it moves between racks. Each sensor has a unique ID information in the world that corresponds to the historical temperature data of the sensor, and this ID information is also applicable to asset management. Based on these, airflow temperature trends can be analyzed periodically to detect faulty equipment, protect sensitive electronics, and optimize airflow throughout the data center. The sensor can also be placed under the floor to determine if water is leaking by detecting humidity and avoiding electrical shorts.

In buildings and smart buildings, intelligent passive wireless sensors monitor humidity and bus temperature levels in walls, floors, concrete slabs, without the need for full customization and “line of sight”, providing historical data and observing temperature rises. When moisture is detected or the temperature exceeds a critical value, the call manager is taken to take emergency control.

Intelligent passive wireless sensors for transportation and logistics services

In transportation and logistics services, intelligent passive wireless sensors can be used to monitor cold chain (food or drug) temperature and logistics tracking online, and to ensure that the goods maintain proper temperature and humidity to ensure compliance, reduce product loss and ensure easy The safety of rotten goods.

Smart passive wireless sensor for medical use

In the field of health care, intelligent passive wireless sensors can be used to monitor all aspects of patient health and safety, including liquid level monitoring to remind nurses that the IV bag is empty, the catheter bag is full, humidity detection reminds the nurse that the sheets need to be replaced, and the on-site test informs the nurse The patient gets out of bed, falls, sway, etc., and the caregiver detects to help the employee locate and prove the presence, such as the nurse in the ward.

Smart passive wireless sensor for cars

In automotive applications, intelligent passive sensors manage water intrusion detection, Occupant Classification System (OCS), airbag control, HVAC, smart wiper control and tire pressure monitoring systems.

to sum up

ON Semiconductor's intelligent passive wireless sensor one-stop solution integrates all the hardware and software required, including readers, antennas, various types of sensor tags, power supplies, Ethernet cables and companion software, plug and play It can be deployed immediately on the edge of the network where wiring is difficult or difficult to replace, and monitor various parameters such as humidity, temperature, and distance. Passive wireless sensors harvest energy from received signals, with the potential of innovative low-power IoT sensing design for system temperature monitoring, humidity/temperature/level monitoring for applications such as preventive maintenance, and analysis of the IoT world Massive data to solve the challenges of IoT sensing design. ON Semiconductor will also continue to expand its sensor portfolio to meet the sensing needs of the fast-paced IoT market.

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