Jessicazhou is the senior manager of QorvoUWB company. At this IoT conference, she introduced the advantages and applications of UWB technology from product to technology in detail. UWB is mainly used in high-precision positioning systems. At present, 95% of UWB positioning systems are made with Qorvo chips.

UWB ultra-wideband technology is being increasingly used in the field of Internet of Things, especially wearable devices and smart homes. With the continuous development of smart home and wearable device market, ultra-broadband technology will be more and more widely used.

Jessicazhou is the senior manager of QorvoUWB company. At this IoT conference, she introduced the advantages and applications of UWB technology from product to technology in detail. This paper firstly introduces the positioning method of UWB door lock. The UWB base station is installed on the door lock, and the user wears a mobile phone or a key card. They will complete UWB pairing and key exchange via Bluetooth, thus enabling UWB security testing. UWB completes the security identification and unlocks the door when the user approaches the door lock. Another scenario is smart home applications. In UWB, the smart home can locate the user's location independently.

The biggest feature of UWB is its high positioning accuracy, and the B1100LB-13 can reach centimeter level. Real-time performance will also be better than GPS. UWB can directly judge the front end, greatly reducing the requirements for positioning computing power. And by encrypting the communication mode of QorvoUWB, the security of data exchange is realized. The requirements of low power consumption, low cost, and low computational load brought by UWB technology are very suitable for IoT applications.

Compared with other short-distance communication technologies, UWB has outstanding anti-multipath capability. Without adding other amplifiers, UWB can reach about 70 meters, which is farther than Bluetooth WiFi. Currently Qorvo's data transfer rate may be 27 megabits per second (MBPS) and can be used for high-speed transfers. The scalability of QorvoUWB is also worth noting, that is, power consumption and cost are the main factors. QorvoUWB can support more simultaneous connections than other technologies within the same location or distance.

QorvoUWB has been widely used in the market. Qorvo has been producing UWB chips since 2013. There are now applications in more than 40 vertical markets, such as industrial real-time location systems, car keys, and more. UWB is mainly used in high-precision positioning systems. At present, 95% of UWB positioning systems are made with Qorvo chips. JessicaZhou said that Qorvo will continue to develop chips with front-end compensation based on the HOC based on the second-generation iteration and the third-generation, combined with Qorvo's strong strength in the RF front-end.

Soon, UWB will enter the explosive stage and start building its own ecosystem. UWB will also expand to more emerging applications from IoT smart devices, mobile phones, automobiles, and robotics applications.

Micro-capacity technology: From PCB to chip built-in, passive components are developing in the smart and IoT industries

After 2017, passive component MLCC continued to grow in the development of the industry. With the development of 5G and the Internet of Things, passive components have become particularly important in the past two years. As a benchmark enterprise of MLCC of passive components in China, Zheng Chunhui, executive deputy general manager of Micro Rong Technology Marketing Center, introduced the development trajectory and shape changes of passive components in the Internet of Things to us at this meeting.

First, Mr. Zheng introduced the market status and technology development trend of capacitors in the IoT industry. MLCC is the type with the largest single-machine consumption in electronic rice. Especially after the introduction of ceramic technology, MLCC has good stability, long life and good pressure resistance, and is more suitable for high-speed SMT. As a result, the development of MLCCs is steadily improving.

According to the scale of the global MLCC market announced by Yuanxie, the sales of MLCC this year have exceeded 100 billion yuan, an increase of 11% over the previous year. With the development of energy storage industries such as the Internet of Things, 5G, AI, in-vehicle, and new energy, MLCC will grow at an annual rate of 7.9%. To date, MLCC sales have exceeded $4.39 trillion and are expected to grow 6.6% annually. In this case, will production exceed sales? The solemn answer is: the requirements are very high, which is normal. Every producer has to find the right market for his own market to supply.

High-precision materials are the technological development direction of the MLCC industry. This is the development direction of MLCC, especially MLCC, especially MLCC, which can be determined as a few hundred nanometers. At the same time, the improvement of process technology is also an important part of the development of the whole industry, which is also the trend of the whole industry. All manufacturers, especially domestic manufacturers, are striving to move forward to their counterparts in Japan and South Korea.

Microcapacity technology reflects the demand for wireless communication in IoT applications. With multiple forms of IoT products, their modular integration is increasingly evident. Ultra-miniaturization is a passive component MLCC technology. One of its application trends is that the size of IoT devices is getting smaller and smaller; the second is the improvement of RF capabilities, which is in line with the low loss and high signal fidelity required by IoT applications. correspond. At the same time, with the development of Internet of Things applications and the improvement of computing power, MLCCs have higher and higher requirements for capacitance, and the capacitance will inevitably develop towards large capacity. With the upgrade of product form, MLCC really starts from PCB.

With the rapid development of the Internet of Things, higher requirements have been placed on the technical capabilities and production capabilities of the next generation of parts manufacturers. For every manufacturer, it is both a challenge and an opportunity.

Xinhai Technology: Understand technology, understand the market, understand Hongmeng, and the advantages of software and hardware integration help the Internet of Everything

Core Ocean Technology is the first Chinese chip design company to break through the international monopoly of high-precision ADCs. The core product is the one-stop solution of analog signal chain + MCU dual platform, AI measurement algorithm and AIOT. As far as health measurement AIOT is concerned, the core business is mainly engaged in Wi-Fi/BLE and some one-stop solutions based on perception, control, connection and AIOT.

Liu Longguang, director of the system development department of Coresea Technology, said that with more than ten years of in-depth understanding of high-precision ADCs and high-reliability MCUs, Chipsea has developed intelligent IC and intelligent algorithms, cloud platforms, artificial intelligence, One-stop solutions such as big data. Market segments such as body fat scales are deeply cultivated to form a complete ecological chain and enhance the strength of terminal manufacturers. Now, Chipsea itself has more than 13 million access users.

However, there is still a lot of intelligent work to be done. For example, although the threshold of general functional technology is not high, the overall implementation cost is not low. After research, Xinhai summed up the challenges faced by a series of smart devices: each smart device requires a set of applications, which is expensive for users to use; the Bluetooth device binding operation is troublesome; some low-end urban users are still difficult to download and register. Application; wide range of development and maintenance, great difficulty in synthesis. Therefore, it is difficult for traditional hardware manufacturers to complete intelligent transformation and upgrading on their own.

To meet these challenges, Xinhai provides various types of chips/modules on the basis of HarmonyOSConect, including UX design and H5 development, FA development, certification guidance, project overall control and other multi-level products and services; there are more than 50 solutions for agency assistance Manufacturers customize. Users only need to carry out certain design, assembly and production, and then the delivery and sales of the whole machine can be realized.

In addition to the smart body fat scale, based on the precipitation of this industrial chip + platform business model and industrial chain, Chipsea has also begun to deeply integrate into HarmonyOSConect. For example, in sports health, environmental health, smart small appliances, etc., the large-scale access of L0 screenless machines can be quickly realized.

Taking the core sea as the core, it provides a complete set of solutions for different application scenarios, helping customers to quickly access the Hongmeng ecosystem, saving more than 80% of the time. According to Liu Longguang, there are more than 20 core product series to help join the Hongmeng ecosystem this year, and Huawei has more than 100 business report vendors. Existing projects develop 51 products and 29 certificates.

In addition to AIOT, the core business in the future will also focus on the industrial and automotive fields. By the end of 2020, it will start to break through in the fields of pan-industrial and automotive electronics, and blossom in more places.

Controller: Battery Simulation and Endurance Optimization for Smart Door Locks, Wearables and IoT Terminals

Currently, low-power measurement of smart devices and chips faces many challenges. For example, intermittent, bursty, highly dynamic, rapidly changing operating current, and test times ranging from milliseconds to days. Although traditional test instruments such as oscilloscopes can achieve high sampling rates, it is difficult to ensure resolution and accuracy, while high-resolution multimeters have problems such as low speed and pressure drop.

The N6705C DC power analysis host provides a highly integrated integrated test solution. with N6781 model">N6781 model">N6781 model">N6781 model">N6781 model">N6781 model">N6781 model">N6781 model">N6781 model">N6781 model">N6781 model">N6781 model">N6781 Model">N6781Model">N6781Model">N6781Model">N6781Model">N6781Model">N6781/N6785A current limiters are combined together to continuously capture the rapidly changing current waveform of 8na~8a to achieve zero voltage Drop-down current and voltmeter, complete the battery capacity test in the actual environment, and also include adjustable battery internal resistance simulation. BV9200B power control software provides 1000 hours of data recording, supports 64K complex waveform editing, BV9210B battery test and battery simulation software, supports battery model extraction and simulation, and also allows charging and discharging tests.

In the application of intelligent door lock, the battery terminal voltage determines its service life, and the factors affecting the terminal voltage are: open circuit voltage, internal resistance, working current, etc. Based on this, by generating a model through battery testing and mastering battery characteristics and complex characteristics, you can find out the best method to optimize product power consumption and select the most suitable battery, thereby prolonging the service life of the battery.

Zuo Huaifeng, deputy general manager of Kangqi Technology, demonstrated the battery life test for smart door lock applications, comparing the life of IoT batteries and ordinary alkaline batteries. The battery power consumption is tested by N6705CDC power analyzer host + N6781ASMU module and BV9200B analysis software. It can be seen from the unlocking waveform that the sleep current is quite different from the unlocking current, so the dynamic range is required to be higher.

When the output voltage drops, it can be seen that when the voltage drops to 3.2V, the door lock cannot be opened. BV9210B battery simulation software N6705C and BV9210B battery model extract the battery. When the voltage of the two battery terminals drops to the minimum voltage of the door lock, the remaining capacity of the battery will be tested by simulating the door lock load.

The test results show that the alkaline battery can only release 45.2% of the electricity, while the IoT-specific battery can release 71% of the electricity under the same load, which actually increases the number of unlocks. The experimental results also show that the resistance of the IoT battery is smaller than that of the alkaline battery, so under the peak current load, the battery terminal voltage is higher and the smart lock will not be triggered.