What are the three layers of the Internet of Things architecture?The architecture of the Internet of Things was usually composed of four layers: the perception layer, the network layer, the platform layer, and the application layer.
1. Perception layer: The bottom layer of the Internet of Things system. It is similar to a human's sensory organ. It is responsible for identifying objects and collecting information. It included various sensors, detectors, and smart devices that could monitor and sense various parameters and states in the environment. Its main task was to convert real-time data into digital signals and transmit them to other layers of the Internet of Things system for processing and analysis. The layer consisted of two sub-layers, namely, information collection and communication sub-layers. The sensor, two-dimensional code, barcodes, RIDs, intelligent devices, and the like were used as data collection equipment, and the collected data was exchanged with the gateway of the network layer through the communication module of the communication sub-layer and the extended network.
2. Network layer: It is the communication and connection layer of the Internet of Things system. It is responsible for transmitting the data collected by the perception layer to other devices or cloud platforms. Various communication technologies, such as wireless networks, cable networks, and cellular networks, were used to achieve the intercommunication between devices. In addition, it also involved the design of network topography, communication protocol, data security, and other aspects of technology.
3. Platform layer: The core layer of the Internet of Things system, providing data storage, processing, and management functions. It usually included cloud computing platforms and Internet of Things platforms. The cloud computing platform was used to store and process large-scale data of the Internet of Things, providing powerful computing and analysis capabilities; the Internet of Things platform provided functions such as device management, data flow management, application development and deployment to support the operation of the Internet of Things system.
4. The application layer is the top layer of the Internet of Things system. It implements various application scenarios and services based on the functions provided by the platform layer. This included applications in various vertical fields such as smart homes, smart transportation, smart factories, and smart agriculture. It could be customized and developed according to user needs to realize functions such as intelligence, automaton, and remote control.
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Poor orphan girl's novel free to read and downloadI recommend " The Rebirth of the First Daughter ", an ancient romance novel written by Gu Wanyin. The female protagonist was bullied to death in her previous life. She was reborn at the age of five and was no longer weak. She wanted to fight for a happy life. The female lead had a high IQ, and the plot drove the story forward. However, this book was quite expensive. VIP users could read it for 80 yuan.
" Reborn as a Village Wife " was not bad either. It was a modern romance novel written by the pure and innocent Shika. The female protagonist came back from the dead and married the poorest man in the village. There was a cheating system that had to complete the mission to get rich. The angle was novel and fun.
" Noble " was an ancient romance novel by Baili Moran. The Xie family's first daughter was reborn. The author cheated Pinjia, but after the fees were collected, the content was vague.
" The Plain Hands Doctor " was an ancient romance novel written by Wei Man. The Sinful Minister's orphan daughter became a doctor after a long illness in her previous life. After she was reborn, she saved people with money. Her writing style and plot were not bad, so she was exempted now.
" The Rebirth of a Rich and Powerful Lady " was a modern romance novel written by Yu 'er Qianqian. The female protagonist was reborn after being harmed by her sister and husband. She wanted to punish those who offended her, but the fee was too expensive.
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I've signed in for a thousand years, and the Jade Lake Empress has invited me out of seclusion.Based on the current information, there was no more detailed information about the novel called " The Jade Lake Empress invited me out of seclusion after signing in for a thousand years." Such as the plot, the relationship between the characters, the direction of the story, and other unique information. It was impossible to elaborate further.
The novel " Fantasy Queen Breaks the Heavens " is equally exciting. Everyone is welcome to read it!
16th Generation SingerThe reference mentioned a 16-year-old singer, Lizabet. She was a Vietnam mixed-blood who was born and raised in China Hong Kong. She had China Hong Kong household registration and started singing at the age of three. At the age of seven, she performed at the Beijing International Music Festival and received public praise. She was currently signed to the headquarters of Sony-Sony Music and officially debuted in Japan. She was another singer in Japan after Alan. She sang the English theme song of the Japanese drama "DICU","Another Day Goes By". The Japanese media called it the arrival of a singer from Hong Kong.
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The lyrics of the full moon night"A Full Moon Night with Flowers"(Mandarin) Lyric:
The spring breeze blows and blows into my heart. I miss you so much that I can't fall asleep. Why don't you understand the meaning of falling flowers? He could only look at the bright moon outside the window. The moon hung high, curved like your eyebrows. The heart that misses you can only move forward and not retreat. I say you, do you know that flowing water is not heartless? I'll carry you to the palace in the sky. On this night of the full moon, two hearts loved each other. On this night of the full moon, lovers came in pairs. I say, you, who else is there in this world? I can play with you like mandarin ducks in the water and fly with you. When will the bright moon appear? I ask the blue sky with wine. I wonder what year it is in the palace in the sky.
"A Full Moon Night with Flowers"(Cantonese) Lyric:
Love words are sent and sent, and spring is flying. Who is beating and beating, and whose heart is thicker than mine? It's a pity that you shouldn't have been my backup. The full moon in vain shines on you in the sky. The moon is beautiful, beautiful, only blame the flowers and swallows flying alone. Who is singing and singing, brushing the spring and laughing at the thrush? I hate you the most, you mistakenly received the flying kiss. In the palace of the heavens, I'll wake you up. With the full moon shining thousands of miles, a pair of mandarin ducks playing in the water. The full moon shines high and beautiful, this love does not need to practice. I was waiting for you to fly into the sky before going underground. When the flowers are full and the moon is curved, don't play tricks. I'm about to ask you about wine. The flowers bloom, and the wind and clouds rise. when and where will I embrace the beautiful woman? the bright moon lies in the middle of the moon.
"Coincidentally, Love Is Parting" is also a wonderful novel. Everyone is welcome to click and read it!
What should I do if there is a blood flow signal in the uterus after a drug abortion?After the medical abortion, the ultrasound showed that there was a blood flow signal in the uterus. It was generally considered that the abortion was incomplete or complicated with infection, but it could not rule out other space-occupying diseases in the uterus, such as Endometrial Polyps, sub-mural myoma, etc. If the abortion is incomplete, there is still embryonic tissue left in the uterus, which needs to be treated with medicine or surgery under the guidance of a doctor; if it is complicated with infection, corresponding anti-infection treatment is also needed; if it is a space-occupying disease in the uterus, it is recommended to be treated with surgery under the guidance of a doctor. It should be noted that the blood flow signal in the ultrasound results alone could not accurately determine the specific cause. The doctor should be consulted in time. The doctor would make a comprehensive judgment based on the medical history, symptoms, laboratory examination, and give corresponding treatment suggestions. For example, if there were few residual blood and no obvious bleeding or abdominal pain, medication could be used to promote discharge; if there were many residual blood, repeated or accompanied by rich blood flow signals, surgery might be needed.
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What kind of tree is tall and beautifulThere were many trees that were tall and beautiful in appearance. For example, the Fortune Tree had a beautiful meaning of attracting wealth and good luck; the Dragon Blood Tree symbolized longevity, health, and longevity; and the Happiness Tree was beautiful and connected to happiness.
In terms of the tallest trees in the world, there were General Shermane, North American spruce, Douglas firs, Menara, Xizang cypress, stratosphere giant, Dai Hui giant, Haibo Long tree, Australian almond gum, etc.
Among the common trees, myrtle was a decidual tree native to North America, with gorgeous white or pink flowers and bright red leaves; maple trees were popular all over the world, with elegant shapes and colorful leaves; pine trees were tall and straight, with dense needles and unique cone fruits; cherry trees were famous for their charming flowers and varied colors.
There are also many beautiful and tall trees in autumn in our country, such as Chinese tallow trees full of red leaves like flames; Metasequoia trees are tall and straight, turning golden or orange in autumn; White wax's autumn color is golden with a little soft green; The leaves of the French parasol tree transition to red and yellow in autumn; The leaves of the soapberry turn yellow-green in autumn, and the small fruits on the tree are golden yellow; The leaves of Chinese pistachia tree turn from green to red in autumn.
There was also the North American oak (white oak). The wood was hard and had beautiful patterns. It was tall and white with a hint of yellow and mountain-shaped patterns. In addition, the "Millennium Tree Demon" ginkgo tree had golden leaves in autumn; the rainbow tree in Hawaii had colorful bark; the cherry blossom tree in the cherry blossom tunnel in Germany was like a pink ocean when it bloomed; and the slope tree in New Zealand was full of power. These trees all had unique tall and beautiful features.
"Life Like a White Birch" is equally exciting. Everyone is welcome to click and read it!
A novel that is shocking at first sightI'll recommend a few great novels. " Happy Marriage " was an ancient novel written in search of lost love. The female protagonist was super powerful. She was good at observing people's expressions and pretending to be stupid. Although she was a concubine's daughter, she could find a good match. The female lead transmigrated, the male lead was reborn, and the enemy was reborn. The plot was very novel. The supporting characters were also vividly portrayed. The story had conflicts and jokes. The writing style was simple and not sloppy. They had only entered the bridal chamber after more than 400 chapters and had finished more than 600 chapters.
"From You Who Wear Quickly" was written by Qing Luo Qian Yi. The female lead traveled across time and space to help those who did not have a good ending. The story was very heartwarming. The first world's selection of football stars was very unique and beautifully written. Although he was a little inexperienced, he was very fresh and could arouse a young girl's heart. However, it was a little uncomfortable to change the female lead later, but overall, it was great.
The Full of Joy was a work of searching for lost love. The female protagonist, Zhao Xiyan, was reborn as a little bamboo horse. The story was about revenge. The love of the male protagonist's son for the female protagonist was very touching.
The Genius Physiognomist was an eye-catching urban novel. The young Ye Tian received the inheritance of the physiognomist by chance. The first and middle parts of the story were superb, and although it was a little lacking, it didn't affect the viewing. It was a top-notch physiognomist and Feng Shui knowledge. The single female lead was superb, and the relationship scenes were also good. The later stages were a little fantasy, but the overall scene was super good.
" There's Someone Behind You " was a mystery novel written by Marquis Qingyi. The male protagonist longed for an affair and then had a fate-changing affair. The plot involved ghosts. It was a first-person novel from 2007. It was very scary at the time and had extraordinary meaning to the author.
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The relationship between Treggia and Xero UltramanTreggia and Cyro Ultraman had fought in "Taiga Ultraman," but there was no winner. Both of them came from the Country of Light. Before Treggia turned into a dark person, he was a scientist who participated in many major projects in the Country of Light. Currently, the main connection between the two was the battle intersection in Taiga Ultraman.
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The novel of the male protagonist Fu Xiyan and the female protagonist Song XinyaoHe recommended a few web novels. A Xi's " The Northern Song Dynasty's Carefree Journey " was an ancient romance story that crossed through strange emotions. It was a signed work by Qidian Girls 'Network's Class B. The main character was the disciple of the ancestor Chen Tuan. If he did not want to become an immortal, he wanted to find his own in-law. Yan Cheng's " The Love You Ordered Has Been Delivered " was a modern romance. It had complicated love relationships, such as unrequited love between a tall woman and a low man, as well as the choices of the former and current. There were many characters and vivid images. Shanruo's " The Demon CEO's Wife in Name " was a modern romance about a wealthy family. It was about the love and hatred of several generations and the entanglement of the grudges of three families. The amnesiac Purple wrote " We Can Finally Be Together ", a modern romance about love and marriage. The female protagonist had painstakingly planned after her rebirth, and there were many twists and turns. Calligraphy Addict 811113's " Abandoning the Next Cousin " was an ancient romance that crossed through strange emotions. It had been completed and had many love-hate intertwined plots.
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