I, what is the Internet of Things gateway?
The gateway is a product born for the difficulty of conversion between different protocols, which is internally responsible for the conversion of protocols of different devices of the whole smart home system, and externally realizes remote communication through Ethernet or WiFi into the Internet.
Compared with the Internet era, the communication protocols of the Internet of Things are more diverse, and the fragmentation of things is very serious, so the importance of the gateway is also highlighted - the IoT gateway can integrate the information collected from different things and transmit it to the next level, so that information can be transmitted between the various parts of each other. The IoT gateway can realize the protocol conversion between the sensing network and the communication network, as well as between different types of sensing networks; it can realize both wide-area interconnection and local interconnection.
For example, TV sets, washing machines, air conditioners, refrigerators and other home appliances; access control, smoke detectors, cameras and other security equipment; desk lamps, chandeliers, electric curtains and other lighting lighting equipment, etc., through the integration of specific communication modules, respectively, to constitute their own self-organizing network subsystem. Inside the home IoT gateway device, several sets of commonly used self-organizing network communication protocols are integrated, which can simultaneously communicate with devices or subsystems using different protocols. Users only need to operate the gateway. They can then control all the smart devices in their home that are connected to the gateway.
The gateway plays a very important core role inside the system, what kinds of forms does the gateway have?
We also briefly say here:
Wireless to wireless: WiFi to 433MHz, infrared, ZigBee (family common)
GPRS (2G, 3G, 4G) to 433MHz, infrared, ZigBee (industrial common)
Wireless to wired: WiFi to RS485, RS232, CAN (industrial common)
Wireless to wired: WiFi to RS485, RS232, CAN (industrial common)
Wireless to wired: WiFi to RS485, RS232 CAN (industrial mostly)
Wired to wireless: Ethernet to 433MHz, infrared, ZigBee (home common)
Wired to wired: Ethernet to RS485, RS232, CAN (industrial mostly)
Two, the history of IoT gateway
Device data collection, transmission, monitoring is the key step of the whole process. Key steps, in the market demand for continuous updating as well as technological enhancement, the Internet of Things intelligent gateway appeared in this regard, to better understand its value and the opportunity to appear, to start from the collection of equipment and machine data, transmission, monitoring process development history.
In the early stages of development, the awareness of data collection has just appeared, due to the lack of sensors coupled with the backwardness of the transmission technology, most of them are relying on manual data measurement. The disadvantages of manual measurement are self-evident, time-consuming and labor-intensive, and the scope of detection is very narrow, so the manual measurement method was soon eliminated.
1, the initial local monitoring, the first attempt at data collection
The real sense of data monitoring should start from the local monitoring. Through the wired network will be connected to the equipment master control and PLC or HMI, local human-computer interaction and information exchange, the data on the device is directly displayed on the PC or HMI above.
The PC needs to be installed close to the equipment, and requires 24-hour monitoring and feedback from personnel. At this point, manual labor is still dominant, and local monitoring is of little practical significance, remaining a simple statistical work.
2, the emergence of Ethernet, extending the physical transmission distance
Because of the limitations of local monitoring is too large, people began to Ethernet and other wired broadband technology used in data collection, transmission, data transmission in the scope of a certain extension. When the device node access sensor, through a certain conversion to reach the Ethernet, and then to the terminal display. As far as the transmission range is concerned, there is a certain expansion on the basis of the original range.
But there are differences in protocol standards that lead to communication is not unimpeded, and the inherent limitations of the wired network is that it is not possible to monitor remotely, which once again gives the data market to provide a huge demand.
3, the emergence of the gateway, adapted to more protocol standards
With the emergence of 2G/3G/4G networks, Wi-Fi, Bluetooth and other wireless network transmission technology, the remote transmission of data issues turnaround, but a variety of communication protocols, multiple protocol standards also impede the "dialog" between the device and the device. However, the multiple protocol standards of various communication protocols also hindered the "conversation" between devices and devices. At this time in order to be able to adapt to more protocol standards, the emergence of the gateway is very timely, between the communication protocols and data, the gateway is a translator, and the bridge simply convey information differently, the gateway to the information received to be repackaged to adapt to the needs of the system.
The translation capabilities of the gateway combined with wireless communication protocol technology have greatly increased the distance over which the IoT extends, but IoT technology also faces some unique challenges. One such challenge is that many IoT nodes cannot directly connect to IP-based networks due to limitations in system memory, data storage capacity, and computing power, which makes it difficult to interconnect everything. An IoT gateway can fill this gap by bridging the network between the IP-based public **** network and the local IoT, using between two systems with different communication protocols, data formats or languages, or even completely different architectures.
In layman's terms, with a gateway, the so-called M2M is no longer a machine-to-machine dialog in the narrow sense, but rather a communication without barriers between devices, systems, and people.
4, modern IoT intelligent gateway, promote equipment predictive operation and maintenance
Modern IoT intelligent gateway, in the era of IoT plays a very important role, it is not only connecting the perception network and the traditional communication network of the link. As a gateway device, the IoT intelligent gateway can realize the protocol conversion between the sensing network and the communication network, as well as different types of sensing networks, and can realize both wide-area interconnection and local area interconnection. In addition, the IoT intelligent gateway also needs to have the equipment management function, the operator through the IoT intelligent gateway can manage the bottom of the various sensory nodes, to understand the relevant information of the nodes, and to realize the remote control, the unique IoT edge computing capabilities, so that the traditional factories in the process of the digital transformation to achieve a more rapid and accurate data collection and transmission.
Third, the characteristics of the IoT smart gateway
Support remote update maintenance. For example, Ruff's IoT smart gateway can be upgraded at any time according to the software, add support protocols, and provide a JS language-based development interface, which allows you to download the corresponding configuration application to complete the modification of the hardware product features. When problems occur during the use of the gateway, there is no need to go to the site for maintenance. Simply use the Ruff Explorer remote management tool to modify the software at the software level, and discover and solve the hidden dangers in advance from the remote end, so as to make the maintenance smarter, and the operation of the equipment more stable and reliable.
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