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Since the emergence of the new crown the global requirements

2022年12月27日

Since the emergence of the new crown, the global requirements for people have gradually become home-based. Apple and other companies asked employees to return to work from home, but employees were unwilling and sued the company.

Musk is relatively tough, stipulating that employees must come to work, and they are unwilling to leave when they leave home; coupled with some news such as the closure of movie theaters, the result of changing the house is inevitable. gsm wifi bluetooth module After all, who wants to move when they can lie down.

In order to prove this idea, I searched the report and found that Gartner, a well-known organization, predicted that the proportion of global white-collar workers working from home will reach 31% in 2022. If the scope is narrowed down to purely mental workers, the data will be as high as 51%.

So where does this lead?

Immediately afterwards, I went to the report of the consumer market and found that tablet computers, a product that continues to decline in the market, will increase by 13.6% against the trend in 2020. Among them, the two major Android manufacturers of Samsung and Lenovo have soared by 44% and 66% respectively. In the fourth quarter, it reached a growth rate of 120%, and relevant agencies called it "unprecedented demand."

I feel that the heads of the tablet departments of these enterprises are laughing crazy, and the marginal departments are ready to give up the market. An epidemic has brought this market back to life!

So why did sales increase? Because migrant workers and students have to hold meetings or take online classes at home on their tablets. smallest bluetooth low energy module Or telecommuting at home, or playing games when you are bored, PC shipments in the fourth quarter of 2020 also increased by 26%, setting a new high in the past decade; follow-up will continue in 2021, and annual shipments will continue to increase by 15%. Among electronic products, various categories such as mobile phones, game consoles, and VR equipment have also risen. Anyway, the real world should wither and the virtual world should rise.  


Posted by adolfbasil at 10:35Comments(0)SOC module

Difference between DSSS and FHSS

2022年12月16日

Since the FHSS system relies on different RF carrier frequencies, error bursts are mainly caused by frequency selective fading.

Error Rate: In DSSS, the information bits are distributed over frequency and time planes, thus minimizing the effects of interference and fading. Therefore, DSSS systems are prone to errors, but at a lower level compared to FHSS systems. FHSS produces strong burst errors.mini bluetooth module Although both techniques have errors, it can be seen that the error rate is higher in FHSS than in DSSS systems. Whenever any device approaches the blocking frequency as it hops between channels, the bandwidth of the FHSS system drops. Compared with DSSS, the decoding process of FHSS is easier. Specific algorithms are required in DSSS to establish the connection between sender and receiver.

Network capacity: The transmission rate of DSSS is higher than that of FHSS, DSSS provides a capacity of up to 22 Mbps, while FHSS supports a capacity of up to 3 Mbps.

Reliability: DSSS is more reliable than FHSS systems, bluetooth transceiver module which are less reliable in applications. But for mobile applications FHSS is more energy efficient. Acquisition Time: The time required to convert an analog signal to a digital signal, more in DSSS systems than in FHSS systems.  


Posted by adolfbasil at 11:20Comments(0)industrial iot gateway

A specific introduction to the development of lora wireless

2022年12月01日

After the growth in the past few years, I believe that everyone has a deeper understanding of me. After all, I am well-known in the industry.

However, after understanding, I found that many people in the industry still misunderstand me, so I hope to break everyone's inherent cognition through this article, so that everyone can have a newer understanding of me.

For example, if various communication technologies are placed on the same field, I originally entered this competition as a "long-distance runner" and was assigned to the LPWAN group. Now, as my potential has been further developed, "sprinting" is actually my specialty.

(The so-called "long-distance running" means that the coverage area is large and the data transmission distance is long, while the "short-running" is the opposite.)

Maybe you will question: Why should I add other labels to myself at will? So, let's look at the following analysis:

01

Not only a long-distance runner, but also a small sprinter

As a low-level modulation technology, although I am widely known as one of the wide area network communication technologies, the characteristics of the local area network in me cannot be ignored.

Therefore, the focus of this article will be to discuss what advantages I have in LAN applications based on my LAN characteristics, and the consumer IoT market applications opened based on my LAN characteristics.

First of all, I need to explain one thing first, which is the difference between me and LoRaWAN. I believe that so far, some people tend to confuse us. In fact, LoRaWAN is based on a set of communication protocols designed by me. In the communication system hierarchy, we belong to two different levels.

As far as LAN technology is concerned, the concepts corresponding to me include FSK/GSK frequency modulation technology, QEM/BPSK frequency modulation technology, and the concepts corresponding to LoRaWAN are BLE, WiFi, ZigBee, Z- Wave technology, etc.

And it is worth emphasizing that the LoRa chip that carries me can run LoRa modulation technology, and can also run other modulation technologies, such as FSK modulation. Therefore, if you download the relevant code, the LoRa chip can run protocols such as Bluetooth.  
タグ :4G


Posted by adolfbasil at 18:50Comments(0)industrial iot gateway