How to pry wireless communication technology in th

2022-08-20
  • Detail

In the trillion level industrial interconnection market, how to leverage wireless communication technology is a hot topic nowadays, which attracts both technicians and investment institutions. The author is engaged in the chip industry and hopes to talk about wireless communication technology and future development opportunities related to industrial interconnection from the perspective of chips

I. industrial interconnection and communication connection technology

Industrial interconnection is one of the seven major sectors of new infrastructure, and it is also the core strategic deployment of the country in the new era. At the same time, it is also an important direction for the transformation from traditional consumer interconnection (to C-end) to industrial interconnection (to b-end). The concept of industrial interconnection is very simple. In essence, it is to use advanced information technology to transform and upgrade traditional industries (not only industries) in order to achieve the improvement of efficiency and competitiveness

industrial IOT is to realize the connection of all elements of industrial production (personnel, machines, materials, rules, environment) through IOT connection technology, and then store and calculate data through big data and cloud computing technology, deeply mine the value of data, and optimize production processes, so as to achieve efficiency and productivity improvement, cost reduction and profit growth

among them, communication technology is an important driving force for industrial development. Industrial interconnection is closely related to communication connection technology. Due to different industrial field environments and application scenarios, a variety of communication systems are needed to cover different business needs

industrial interconnection technology includes two categories: wired connection and wireless communication. Wireless communication technology is widely used in industrial interconnection because of its simple deployment, powerful function, convenient use, flexible group and large coverage area. In particular, the technological changes caused by the introduction of 5g, Lora and other new technologies are the focus of this article

different scenarios have different requirements for communication mode: the field of automatic driving requires low delay, so 5g urllc mode is suitable; Telemedicine requires large bandwidth, so 5g embB has its advantages; It is suitable to use various lpwan systems in low-speed, high-capacity and long-distance scenes, including Lora, nb-iot and chirp. Therefore, the most feasible way is to replace the material IOT technology of express packaging; Ble/zigbee and other technologies can be used for those with high requirements for mesh group

second, examples of industrial interconnection smart factory

let's first look at an example of smart factory in the era of industrial interconnection

smart factory is one of the important application scenarios in the field of industrial interconnection. There is no doubt that modern wireless communication technology must be used to ensure the effective management and control of automatic loading, warehousing and transportation, logistics and feeding, etc. the following is a case of AGV (automatic guided vehicle) car management:

when the AGV car is indoors, AGV cars and shelf tags can communicate with the base station through Bluetooth AOA (angle of arrival) positioning technology. The base station can calculate the specific location, and then transmit the real-time location information to the background server. On the one hand, it can realize the positioning of AGV trolley. On the other hand, using electronic shelf label ESL to display the information of specific goods, combined with AOA positioning technology, can realize the unified management of commodity information and commodity positioning

when the AGV car goes from indoor to outdoor, using 125k low-frequency trigger technology, the trigger chip in the AGV car will receive the signal to trigger and activate the base station, so that the AGV car will switch from Bluetooth AOA positioning to GPS positioning

when the AGV car is outdoors, the GPS module obtains the specific longitude and latitude information by communicating with the satellite. Because the power consumption of the GPS module is relatively high, the gyroscope module is used to judge the motion state of the AGV car outdoors. When it is stationary, the GPS is turned off to save power consumption. When it is moving, the position information obtained by the GPS is turned on, and then transmitted to the base station through low-power long-distance communication technology (such as Lora, chirp IOT, etc.)

agv trolley transmits the location information to the base station indoors or outdoors, and then the base station transmits it to the background server through the router through wired or wireless Ethernet. The background server records the collected location information, and finally presents the location information and motion trajectory of each AGV trolley to the user

in this case, Bluetooth AOA positioning technology, electronic shelf label ESL, GPS positioning technology, low-power long-distance communication technology and other means are used to track and report the indoor and outdoor trajectory of the target object. The background effectively manages and controls the target through cloud management software to achieve the whole process control of the industrial environment

the application scenario determines the choice of communication mode. This paper will select several classic underlying technology scenarios of industrial interconnection to illustrate the requirements of communication system

III. industrial interconnection and indoor positioning technology

indoor positioning refers to the positioning of objects or people in the indoor environment. More than 50% of the information in the future is related to location data. According to the survey data of market markets, the global market for indoor positioning will grow at a compound annual growth rate of 42.0% in the next few years, and the market size is expected to expand from $7.110 billion in 2017 to $40.999 billion in 2022. In particular, after the enterprises represented by Apple introduced the high-precision positioning system into the ecosystem, the original business model of Tob will quickly transition to the TOC market, which will inevitably lead to a new round of rapid market growth

collecting location data needs to rely on positioning technology. With the development of wireless communication technology, the performance indicators of positioning technology have also made great progress, and the corresponding market based on positioning technology is gradually opening up. With the improvement of the accuracy of indoor positioning technology, indoor positioning provides very accurate location information data for retail, manufacturing, medical, robot and other industries, and has become an important foundation in the era of IOT. It is undeniable that in the era of industrial interconnection, indoor positioning technology, as one of the underlying basic technologies of industrial IOT sensing network, can naturally obtain greater market opportunities

the commonly used technologies for indoor positioning are Wi Fi, RFID, ZigBee, infrared, Bluetooth and UWB ultra wideband technologies, which have their own characteristics, as shown in the following table:

there are many technologies that can realize the positioning of indoor dust removal and noise reduction equipment, including RFID, infrared line, Bluetooth beacon, ZigBee, Wi Fi, UWB and aoa-ble. Each technology has its advantages and disadvantages, Among them, the high-precision positioning field is mainly the aoa/aod technology supported by UWB and the latest ble 5.1. These technologies can provide accurate space-time location information for people, logistics and assets in industrial scenes, which are all important technical foundations of industrial interconnection

in addition, other indoor positioning technologies, such as visual imaging positioning, low-frequency trigger positioning, ultrasonic positioning, inertial navigation positioning, lidar positioning, millimeter wave positioning, etc., may be applied in various elements of industrial interconnection, such as automatic loading, warehousing and transportation, logistics and material delivery. There is no doubt that indoor positioning will be the integration of multiple sensors or technologies, and it is a basic product of industrial interconnection

at the same time, combined with 3D map system, indoor positioning technology can solve many scene problems, such as exhibition audience behavior analysis, fire evacuation emergency plan, shopping mall customer behavior analysis, pedestrian heat distribution, etc. the following is a legend of indoor positioning system

the ble tag in the figure or the aoa/aod positioning signal of ble 5.1 equipped with positioning app is sent to the positioning base station. The positioning base station calculates the spatial position of the object through the positioning hardware and related algorithms, and then sends it to the background PAAS platform through tcp/udp and other connections. The application end can prepare to locate the object position in combination with the existing indoor positioning

IV. industrial interconnection and low-power wide area IOT

industrial interconnection environment has a large number of low-speed signals such as sensors, valves and process control variables that need to be collected and processed, and the industrial environment needs a communication system with long transmission distance, long working life, high communication density and strong anti-interference. It is more appropriate to apply low-power wide area IOT Technology (lpwan) in the above scenarios, Common low-power wide area systems for industrial interconnection are as follows:

among the above lpwan connection modes, lte-cat1, LTE EMTC,

nb-iot are based on public; In order to meet the needs of IOT scenarios in different scenarios, 3GPP finally determined LTE cat 1. There are three standards: LTE EMTC and Nb IOT, among which NB IOT has the slowest rate, EMTC takes the second place, and cat 1 the fastest (5mbps)

among the above three systems, lte-cat1 does not require operators to replace equipment, and can reuse the infrastructure of traditional 4G networks. Compared with Nb IOT and 2G modules, LTE cat Phase 1 has the advantages of good network coverage, fast speed and low delay, and it is very compatible with domestic 4G networks. It can be widely used in application scenarios that have requirements for cost performance, time delay, coverage and communication speed. Before 5g network revenue did not start, lte-cat1 was very popular with operators. In contrast, nb-iot and EMTC based on 5g require hardware investment, and their network coverage and product maturity are not as good as lte-cat1

non cellular connection technologies include Lora, sigfox and chirp IOT. Lora is a technology dominated by Semtech in the United States and has a wide market at home and abroad. Sigfox is a low-power wide area group technology led by French companies, which has a wide market in Europe. Chirp IOT is a domestic low-power wide area IOT underlying technology, which is reported to be ready for commercial trial

in the above connection mode, public based data needs to be sent to the operator's network first, and then the customer downloads it from its server. This management mode centered on the operator Caixin learned from pingkuang group poses great challenges to enterprise data security. Many enterprises expect to establish private networks to ensure enterprise data security. Therefore, non cellular autonomous group technologies such as Lora and chirp IOT have great advantages, It will occupy a considerable share in the implementation of industrial interconnection

v. industrial interconnection and new retail information system

with the rise of online sales, the new retail industry is also undergoing an information technology revolution. A large number of new technologies such as electronic shelf tags, senseless payment, intelligent distribution, etc. are booming. Among them, electronic shelf tag technology is the lowest infrastructure of the new retail industry. The use of electronic price tag technology can replace the traditional manual price modification, which is fast and efficient, At the same time, greatly reducing the probability of error, together with other functions such as auxiliary positioning, can improve the operational efficiency of the new retail industry, showing a rapid development trend abroad. According to marketsandmarkets, the global electronic shelf label market will reach $14billion in 2023. From 2017 to 2023, the market will also grow at a compound annual growth rate of 24%, and the Asia Pacific region will become one of the fast-growing regions with great market potential

electronic shelf label system (ESL) is an electronic display device placed on the shelf and can replace the traditional paper price label. It brings obvious benefits to retailers:

first, the price modification work becomes simple, saving increasingly expensive labor costs. ESL provides a convenient price change environment, and supermarkets can carry out more promotions to improve sales

secondly, the consistency between the shelf price and the cashier price reduces the risk of the government if it wants to destroy the samples (such as stretching the price regulation), and also meets the desire of customers to get accurate prices.

the whole new retail

Copyright © 2011 JIN SHI