What is Lte Modem?

2023-10-21 usr News

Lte modem: data transmission unit. Lte modem is a kind of middleware, which is responsible for wireless/wired information transmission. It is divided into WIFI/4G/Ethernet. They use different means of communication for information interaction. The concept of the Internet of Things lies in overall planning and management, and in the interaction between servers and points. However, for many equipment companies, they may not be good at information interaction. Lte modem is the solution to this situation.

  

Equipment companies can use our Lte modem as communication middleware, which can simplify the difficulty of information interaction between end equipment and server, so that users can only consider the development of end equipment and the application of server logic, and no longer need to consider complex means of interaction, whether it is wireless WIFI/4G or wired Ethernet. The docking server, whether in the form of TCP, UDP, HTTP, or MQTT, can easily exchange information.

  

Lte modem application scenario

Lte modem does not only exist in the concept, now there are many scenarios, has used LTE modems, such as the automatic switch of the 5G base station, operators will monitor the communication pressure of the 5G base station when it is late at night, the network is less used, operators will remotely turn off the power supply of the base station. The way to close it is to send the Modbus command directly through the Lte modem. O as to achieve the purpose of saving energy.

  

Not only that, turning on and off the base station is only a kind of information transmission. You can exchange any information through the Lte modem. For example, you can send instructions to query the current power usage of the base station, and the returned results will also return the data to the server through the Lte modem, so that the server can monitor the operation of the equipment in real-time.

  

Not only in the people's livelihood application environment, Lte modem can show its strength. The emergence of Lte modem is in fact a change in control thinking, which adds a way to the control of equipment. For the original equipment, data acquisition, data processing, equipment action, and so on are all completed on the equipment. When the operator is not on the spot, Our controllability of the equipment is very poor.

  

With the vigorous development of the Internet of Things, the concept of a server has been brought more clearly, and the interconnection of all things is not empty talk. People expect a more centralized system to monitor and control the equipment, but in fact, the two biggest problems brought by this change are communication and server side, how to send the data monitored by the equipment to the server, how to process, store and analyze the data by the server are all problems.

  

Therefore, many Internet of Things platforms have come one after another. Aliyun, Baidu, Tencent, and China Mobile have launched their own related Internet of Things platforms to make samples for many Internet of Things enterprises. So the current pattern is that large Internet of Things applications or enterprises will use their own Internet of Things platforms to control devices, while small Internet of Things applications or enterprises will flock to the embrace of these large payment platforms. The data generated by these devices will finally have a home, and they will be sent to the background of these servers for processing.

  

So when the problem of server direction is being solved step by step, the problem of data transmission is also being carried out synchronously. Large applications or devices will have their own communication units, but small and medium-sized enterprises do not have the ability to independently complete the transmission of device information. This scenario is very suitable for Lte modem. In fact, an LTE modem is an application product in the direction of the Internet of Things, a kind of communication middleware, which does not exist unilaterally for a certain device.

  

Application of Modbus

As mentioned above, the new era has brought a new idea of the Internet of Things. The concept of emphasizing the server is to simplify the deployment of the device side, and to get rid of the independence of the end device more thoroughly. People want to deprive the brain of the end device, so that they no longer have their own thoughts, because there is a risk of problems with logical processing, and it is also a trouble to develop these logics.

  

Take the simplest street lamp system, for example, its light sensor will detect the surrounding lighting conditions. When the street lamp can be turned on in low light (at night), the light sensor is the detection device, and the switch of the lamp it controls is the control device. The simplest execution logic is to monitor the value of the light sensor all the time to decide whether to turn on the lamp. So you need a processor to execute this logic all the time. This is the simplest control system. In practice, the control system will have many detectors and controllers. People just want to deprive the value of the existence of this processor, because it costs manpower and material resources, and the failure of this processor will lead to the failure of the whole system.

  

This is the value of Modbus. Modbus is the kind of universal protocol that people expect to control the device. If the device itself supports Modbus, it can be controlled and interacted with directly through Modbus instructions. Take the simplest street lamp system above. If the light sensor and the switching device of the lamp support Modbus command control, As a control processor, the server can monitor thousands of street lamps at the same time. The server can issue a Modbus instruction to query the value of the optical sensor, and then analyze whether it is necessary to issue a Modbus instruction to control the switch of the street lamp. When the information is collected, the action of the equipment is realized by the Modbus instruction as a carrier. The control logic is all moved to the server, We can really simplify the end devices and centralize the control system.

  

Lte modem has been mentioned above, as well as the increasingly serious server idea, Modbus, and the application of LTE modem plus Modbus. As for network IO, it is actually a gateway with a trade-off effect. Although all sensors support Modbus, In combination with the controller, The control system can be realized by interacting the data with the server through the Lte modem. However, the devices supporting Modbus are generally more expensive, and the network IO appears to save costs. They are also Lte modems that can transmit information, but at the same time, they can also be directly used as control devices. The opening and closing of the switch are performed, The acquisition of the switching value and the acquisition of the analog value is performed, and the function of the Lte modem is enlarged, thereby simplifying the expenditure of the whole system.

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本文由三年不鸣转载自usr News,原文标题为:Lte mode and modbus applications,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。

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