The wearable market is brewing and developing in the rumors of Apple's "iwatch", and until recently the public appearance of Apple's smart watch "Apple Watch" made the wearable market really out of the concept stage. It can be said that "Apple Watch" has set a new paradigm for wearable products. However, under the demonstration effect of the “big watch†“Apple Watchâ€, smart wear has shaken the nerves of many companies, and how other wearables can seek product differentiation to keep up with this wave of wearable markets. What about business opportunities?
“In fact, the focus of wearable product differentiation is on sensors, which are known as the soul of wearable products. A cost-effective, low-power, small-sized sensor provides a differentiated competitive advantage for wearable products. For example, Qingdao Weifang Goer's smart bracelet uses Silicon Labs' single-chip relative humidity and temperature sensor provided by Shiqiang, and the customer's response is very good." Lu Junqi, Shiqiang product manager.
Relative temperature and humidity sensors are fully flowered in many fields
Although the rise of mobile devices such as smartphones did not drive the popularity of relative temperature and humidity sensors a few years ago, the relative temperature and humidity sensors will usher in a new round of market conditions driven by wearable products and the Internet of Things (IOT). . Figure 1 below shows Silicon Labs' single-chip relative humidity and temperature sensor applications.
Figure 1. Si701x/2x Relative Temperature and Humidity Sensor Application
The Si701x/2x relative temperature and humidity sensor provides accurate relative humidity (RH) sensing for home automation, HVAC, refrigeration, medical care, remote monitoring, automotive and industrial equipment. When combined with Silicon Labs' popular energy-efficient microcontrollers and wireless IC products, the Si701x/2x family measures, controls and reports on environmental conditions for a variety of connectable devices connected to the Internet of Things. To provide the best solution.
With the improvement of living standards, the demand for home intelligence gradually emerges. For example, if the temperature and humidity sensor is used in the temperature and humidity data acquisition system of the home, it is convenient and timely to obtain indoor and outdoor temperature and humidity data (also Can be integrated with other sensors to extend the range of data acquisition applications).
"With Silicon Labs' most energy-efficient EFM32 MCU and a variety of sensor combinations (including UV light, relative humidity and humidity, gesture sensing), Shiqiang can provide customers with a total control switch Demo for smart home applications, customers can also customize according to their own needs. Different functions." Lu Junqi said.
Statistics show that compared with Europe and the United States, China's food transportation lacks monitoring measures. The use of temperature and humidity sensors to monitor food in transit can effectively help reduce losses in food transportation. In addition, environmental issues are gradually receiving widespread attention from the government and the general public. Industrial production and precision manufacturing are also more concerned with the impact of changes in the surrounding environment on products, making the relative temperature and humidity sensors widely used in industrial, medical, logistics, meteorological and other fields.
Challenge traditional solutions, single-chip solutions win all
“Our customer Beijing Hailin (the largest thermostat manufacturer in China) has adopted Silicon Labs' relative temperature and humidity sensors on their high-end thermostats. Tianjin Jiu'an also uses our temperature and humidity sensors in cribs. In monitoring, this is mainly due to the fact that the Si701x/2x has better accuracy and better cost-effectiveness than the ordinary discrete solution. Lu Junqi pointed out.
The Si701x/2x sensor family is the best alternative to traditional RH sensing methods. These traditional methods typically use discrete or capacitive RH sensing principles and analog circuitry for temperature compensation and signal conditioning, often requiring more material and PCB area. Customers must also perform RH/temperature calibration during PCB assembly, which reduces temperature uniformity. In addition, traditional discrete solutions are also incompatible with surface mount technology (SMT) production.
Silicon Labs' patented mixed-signal technology integrates sensing components, signal conditioning circuitry, analog-to-digital converters (ADCs), nonvolatile memory, and I2C interfaces on a single IC, and is fully fabricated in standard CMOS processes. . Compared to discrete methods, a single-chip solution requires only a negligible BOM cost. And, the Si701x/2x series is also compatible with SMT production.
The single-chip IC design provides greater ease of use while reducing manufacturing cost and complexity. “The Si701x/2x series is fully factory calibrated and performs very well in terms of accuracy and calibration. Without us having to calibrate, the Si701x/2x has a maximum accuracy of ±3% RH in 0-80% RH. Degree, and the maximum temperature accuracy of ±0.4 °C in the -10 ° C to +85 ° C." Lu Junqi specifically pointed out.
Key features of Si701x/2x: high precision, low power consumption, with protective film
Because Silicon Labs' RH sensing accuracy is among the best in the industry, the Si701x/2x family is ideal for most applications where RH and temperature sensing are very tight. Compared to competitors' similar RH/temperature sensors, as shown in Figure 2 below, the Si701x/2x sensor has a maximum accuracy of ±3% RH over a wider humidity range (0-80% RH). The sensor also has a maximum temperature accuracy of ±0.4°C over a wider temperature range (-10°C to +85°C) than comparable products.
Figure 2. Comparison of RH accuracy and range between Si701x/2x and competing products
In addition to its competitive edge in RH accuracy and range, the Si701x/2x sensor also has the lowest power consumption in the integrated RH/temperature sensor market. It supports 3.3 V supply voltage and 8-bit resolution, with an average on-chip power consumption of 2.2 μW at a sampling rate per second, which is up to 6 times lower than comparable products. This high energy efficiency makes the Si701x/2x family the best choice for power-sensitive applications and helps extend battery life.
Figure 3. Comparison of Si701x/2x and competing products
The long-term RH offset is also an important indicator of relative temperature and humidity sensors. The Si701x/2x series has the lowest long-term RH drift, less than 0.25% RH per year, which ensures optimum long-term RH accuracy.
The Si701x/2x family is the only integrated RH/temperature sensor in the industry that supports dual temperature range measurements and represents the state of the art in RH sensing. The new Si7013 device supports second-zone temperature sensing with programmable linearity, eliminating the need for additional analog-to-digital converters (ADCs) and compensation software for typical systems. Applications that require temperature sensing in the second zone (such as thermostats) can now use the Si7013 to effectively measure the analog voltage of an external thermistor.
“In addition, it is particularly worth mentioning that the Si701x/2x has a very unique and optional protective film. This protective film has a very good performance in terms of production compared with competitors. The Si701x/2x with protective film can pass Automated production equipment does not require additional processing, which is very conducive to our production, and many of our competitors can not do this." Lu Junqi specifically pointed out.
The all-in-one CMOS design provides maximum long-term reliability, and an optional filter cover prevents contamination and provides additional protection. The factory-installed cover is a layer of Teflon coating on top of the IC that not only protects the sensor during PCB assembly, but also shields dust from the sensor components throughout the product lifecycle. , dirt and cleaning agents.
Cost-effective sensor with energy-saving MCU and wireless IC, Shiqiang provides free demo
The new Si701x/2x family combines ultra-low power, ease of use, small size, accuracy, reliability and standard process flow compatibility.
In addition, it is particularly worth mentioning that the Si701x/2x has a superior price/performance advantage. Compared to the products of a Swiss company that first entered the field, the Si701x/2x with a protective film is more cost-effective than it. The protective film product is also 10% lower, which is one of the most important reasons for many customers of Shiqiang to replace it with Si701x/2x. (Si701x/2x is pin-to-pin compatible with the company's products.)
"The future sensor market has broad prospects especially in the fields of consumer electronics and the Internet of Things. Of course, in specific applications, there are also some problems that need to be solved. In the Internet of Things, customers hope that a button battery can power the sensor for 6 years. For a long time, even without replacing the battery, the networking and wireless transmission methods of various sensors are also a problem." Lu Junqi pointed out.
In order to meet the demand for wireless sensing applications in the Internet of Things, Shiqiang effectively combines Si701x/2x sensors and other sensors (UV index sensors, gesture sensing sensors) with Silicon Labs' energy-saving MCUs to provide customers with evaluation boards. These evaluation boards are provided to customers for evaluation free of charge. For example, the smart home sensing module shown in Figure 4 below.
Figure 4. Smart Home Sensing Module from Shiqiang
Summary of this article
The wearable market is about to break out. How do local manufacturers achieve cornering overtaking in the fierce market competition? At the same time, the rapid development of the Internet of Things also places higher demands on the wireless sensor nodes used for the sensing end. We need higher integration, small package size and low power sensing solutions. Silicon Labs' Si701x/2x from Shiqiang has met these requirements, and compared to competitive temperature and humidity sensors, the Si701x/2x also Ultra-cost-effective, high-precision (single-chip solution also ensures consistent accuracy), with protective film properties, making it a consumer electronics, smart home, remote monitoring, automotive electronics, industrial equipment and health care applications Excellent sensor choice.
About Shiqiang
Founded in 1993, Shiqiang Advanced includes Avago, Renesas Electronics, Silicon Labs, Rogers, Melexis, Infineon, Acam, Alliance, Micrel, Littelfuse, NEMICON, EMC & RF Labs, EPSON, Ricoh, Cypress, Vincotech, Agilent and other world-renowned semiconductor companies and test and measurement equipment companies in the Greater China region, important distributors, is also an important supplier of many electronics manufacturing and R & D companies, product business covers a wide range of industries, security, medical, automotive, Smartphones, communication devices, consumer, smart meters, Internet of Things and other fields.
As a technology-driven distribution company, Shiqiang also has a mature technical support team and system service processes to provide customers with new product introduction, rapid sample, application consulting, solution and software design, development environment, after-sales and logistics. Professional services. In 2013, Shiqiang had annual sales of 180 million US dollars, 17 branches and offices across the country, and nearly 500 employees.
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