Nov 19, 2020
From the perspective of components
Electronic components are components of electronic components and small machines and instruments. They are often composed of several parts and can be used in similar products. They often refer to certain parts in electrical appliances, radios, meters and other industries, such as capacitors, transistors, The general term for electronic devices such as hairspring and clockwork. Common ones are diodes and so on.
Electronic components include: resistors, capacitors, inductors, potentiometers, electron tubes, radiators, electromechanical components, connectors, semiconductor discrete devices, electro-acoustic devices, laser devices, electronic display devices, optoelectronic devices, sensors, power supplies, switches, micro Special motors, electronic transformers, relays, printed circuit boards, integrated circuits, various circuits, piezoelectrics, crystals, quartz, ceramic magnetic materials, substrate substrates for printed circuits, special materials for electronic functional processes, electronic adhesive (band) products , Electronic chemical materials and parts, etc.
In terms of quality, electronic components are internationally certified by the European Union’s CE certification, the United States’ UL certification, Germany’s VDE and TUV, and China’s CQC certification to ensure that the components are qualified.
The electronics industry has already had an impact on our environment, and this impact will continue as the industry develops. From a positive perspective, the increased use of electronic components in power generation, lighting, motor control, sensors, and many other applications has greatly improved energy efficiency, as well as the ability to monitor and control the environment. On the negative side, the popularization of electronic products has caused landfills to be flooded with large amounts of electronic waste, which has increased energy usage and discharged harmful substances into our environment. But how should we deal with this problem and promote the continuous progress of the industry along the development path of electronic components? In order to find a solution, people have explored various ideas and trends in the industry.
With the development of the Internet of Things industry, upstream and downstream companies have gradually differentiated. Based on their own expertise, companies continue to expand into the Internet of Things industry in an attempt to gain a larger market in the 100 billion Internet of Things market. And this approach has also made the IoT industry chain clearer.
Looking at the entire Internet of Things market, some key products still play an irreplaceable role, such as Internet of Things cards, WiFi and other devices, which have promoted the rapid development of the entire Internet of Things industry. So, which products have played a key role in the IoT industry?
The Internet of Things card is based on the three major operators (China Mobile, China Unicom, China Telecom) to provide mobile communication access services for the Internet of Things dedicated number segment (11 or 13 digits). Its hardware and appearance are exactly the same as ordinary SIM cards. It carries smart hardware and The dedicated functions of the Internet of Things devices adopt dedicated number segments and independent network units to fully meet the management needs of intelligent hardware and Internet of Things for device networking, as well as the mobile information application needs of group companies and chain enterprises.
Based on the IoT card, functions such as product positioning and real-time data transmission can be realized. Its low price, convenient and quick use, which can realize large-scale applications, can be said to provide the best linkage mode for the Internet of Things.
At the same time, some IoT cards can realize the function of writing cards in the air, so that they can quickly deploy globally and provide a strong backing for the development of enterprises.
However, with the changes in various terminals, more and more IoT card chips are currently being used, which have better stability and accuracy than current IoT cards.
The Wi-Fi module, also known as the serial port Wi-Fi module, belongs to the transmission layer of the Internet of Things. Its function is to convert the serial port or TTL level into an embedded module that conforms to the Wi-Fi wireless network communication standard. The built-in wireless network protocol IEEE802.11b. g. n Protocol stack and TCP/IP protocol stack. Traditional hardware devices embedded in Wi-Fi modules can directly use Wi-Fi to connect to the Internet, which is an important part of realizing wireless smart home, M2M and other Internet of Things applications.
The application of Wi-Fi module can realize the signal coverage in the home area, thereby saving traffic and increasing data transmission speed. With the application of Wi-Fi6, the rate of transmission will be further accelerated.
High-precision positioning module
With the application of GPS, all walks of life have begun to adopt this technology, but due to various problems, the positioning accuracy is 3-5 meters, and it is generally built into car navigation and handheld devices. As for the high-precision positioning module, a higher-precision positioning mode can be achieved, and in some applications, it can even achieve dynamic centimeter-level positioning.
The emergence of high-precision positioning modules not only promotes the development of autonomous driving, but also drives various positioning-based industries, such as smart bracelets, smart phones and other industries.
At present, all kinds of companies that provide high-precision positioning modules are constantly strengthening their development, and through the two-star and three-star linkage mode, so as to provide better positioning solutions.
At the same time, some companies cooperate with map service providers such as Baidu and AutoNavi to provide a higher-precision cooperation model.
3D structured light module
The basic principle of 3D structured light technology is to use a near-infrared laser to project light with certain structural characteristics onto the object to be photographed, and then collect it by a special infrared camera.
This kind of light with a certain structure will collect different image phase information due to the different depth areas of the subject, and then use the arithmetic unit to convert this structure change into depth information to obtain a three-dimensional structure. To put it simply, the three-dimensional structure of the object being photographed is obtained through optical means, and then the obtained information is further applied.
With the application of iPhone X, 3D structured light has officially entered people's lives. However, can 3D structured light only be used for face brushing?
As early as a few years ago, the 3D structure has been applied, mainly for scanning and drawing various objects, but due to accuracy problems, it has not been well applied. But with the development of science and technology, its accuracy has reached 0.05mm. Benefit from high precision, so that 3D structured light can be used for scanning various objects, and even for product maintenance.
Narrow Band Internet of Things (NB-IoT) has become an important branch of the Internet of Everything. NB-IoT is built on a cellular network and only consumes about 180kHz of bandwidth. It can be directly deployed on a GSM network, UMTS network or LTE network to reduce deployment costs and achieve smooth upgrades.
NB-IoT is an emerging technology in the IoT field, which supports the cellular data connection of low-power devices in the wide area network. It is also called low-power wide area network (LPWAN). NB-IoT supports efficient connection of devices with long standby time and high network connection requirements. It is said that the battery life of NB-IoT devices can be increased by at least 10 years, while also providing very comprehensive indoor cellular data connection coverage.
The biggest competitor of NB-IoT is LoRa. But for the three major operations, NB-IoT is mainly based on cellular networks. If NB-IoT is adopted, it only needs to be carried out in the existing network. With LoRa, the existing network needs to be rebuilt.
For this reason, NB-IoT has developed rapidly, and with the issuance of Document No. 52, NB-IoT has become the most core connection method for the current development of the Internet of Things.
The Bluetooth module is a PCBA board with integrated Bluetooth function. It is used for short-distance wireless communication. It is divided into Bluetooth data module and Bluetooth voice module according to function. Bluetooth module refers to a collection of basic circuits of chips that integrate Bluetooth functions. It is used for wireless network communication and can be roughly divided into three types: data transmission module, Bluetooth audio module, Bluetooth audio + data two-in-one module and so on. Generally, the module has the attributes of a semi-finished product and has been processed on the basis of the chip to make subsequent applications easier.
Bluetooth is mainly used for short-distance data exchange. It has the characteristics of low power, cheapness, and low latency, but its shortcomings can not be ignored. Because of its data transmission rate of 24 Mb/s, it cannot transmit large data content, and at the same time, the agreement between different devices Incompatibility, resulting in the problem of unable to transmit and receive.
MCU (Micro Control Unit)
The micro-control unit is also called a single-chip microcomputer or a single-chip microcomputer, which appropriately reduces the frequency and specifications of the central processing unit, and integrates peripheral interfaces such as memory, counter, USB, A/D conversion, UART, PLC, DMA, and even LCD driver The circuits are all integrated on a single chip to form a chip-level computer, which can control different combinations for different applications. Such as mobile phones, PC peripherals, remote controls, to automotive electronics, industrial stepping motors, robotic arm control, etc., you can see the MCU.
With the development of microprocessors, MCU has become the "CPU" of small devices. Although it has been developed to 16/32 bits, in the Internet of Things industry, 8-bit MCUs are still Irreplaceable equipment.
The gateway is also called the network connector and the protocol converter. The gateway realizes network interconnection above the network layer. It is a complex network interconnection device and is only used for the interconnection of two networks with different high-level protocols. The gateway can be used for both wide area network interconnection and local area network interconnection.
A gateway is a computer system or device that serves as an important task for conversion. Used between two systems with different communication protocols, data formats or languages, or even completely different architectures, the gateway is a translator. Unlike a bridge that simply conveys information, the gateway repackages the received information to meet the needs of the destination system.
When the gateway was first applied, it was mainly used in smart homes, mainly to solve the interconnection of devices with different communication standards and protocols. With the increase of IoT devices, gateways are gradually being applied to environments such as smart buildings.
However, due to the number of access gateways, once the number of gateways exceeds 30, problems such as stalling and disconnection will occur. However, with the improvement of technology, some gateways can already access nearly 100 IoT devices in real time.
Opportunities and Challenges:
The opportunity to promote structural upgrading and develop emerging industries is the fundamental. The Internet of Things will continue to penetrate and bring the component industry into the broad "blue ocean."
The component industry cannot completely "feed on the sky". It is fundamental to seize the opportunity of adjusting the structure to promote upgrading and vigorously developing emerging industries. Such as the Internet of Things, new energy, smart grid and high-speed rail construction, etc., all provide impetus to the development of the component industry this year. In addition, the rapid development of smart terminals has brought great opportunities to related components. According to figures, by 2012, the market share of smart phones in my country will account for 40% of the domestic mobile phone market, which will drive the packaging of SIM cards, electroacoustic devices, Upstream industries such as sensor components and PCB benefit.
In the next few years, the Internet of Things will continue to penetrate into social life, including smart transportation, smart cities, environmental protection, public safety, smart grids and many other fields, driving the rapid development of electronic components, software, chips and services. According to the predictions of relevant research institutions, by 2011, the number of “smart objects” related to the Internet of Things with embedded chips, sensors, and radio frequency may exceed 1 trillion. At the 23rd Top 100 Components Forum held in Shenzhen recently, Han Xia of the Strategy Department of Wuxi Internet of Things Industry Research Institute revealed that the first phase of Shanghai Pudong Airport’s The construction of a 35-kilometer fence requires more than 30,000 IoT nodes, and each node is composed of various sensors and other electronic devices.
The Internet of Things will bring the component industry into a broad "blue ocean". According to estimates, by 2021, there will be 150 billion embedded devices connected to the Internet, and each device will have intelligent functions, with chips and operations. The platform can realize seamless communication and data exchange with other devices.
Everything seems to be back on a "net", and the components are the warp threads necessary for us to carefully weave this net.