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Before, we have introduced NB-IoT technology:
I heard that it will be the world of this NB stuff from now on. . .
Many students asked, what specific application scenarios can NB-IoT have?
Today, let's take a few examples of NB-IoT applications in real life.
Animal husbandry is mainly divided into captive and grazing, and the northern and western frontiers of China are the main grazing areas.
The advantages of stocking are that the quality of livestock meat is high, and the cost of feed is reduced, but it is accompanied by many inconveniences in livestock management.
Artificial grazing is the most primitive and direct method, but there are some disadvantages:
Manual stocking requires special personnel to stock up, which is a waste of manpower
Artificial stocking is a safety hazard and there is a danger of being attacked by wild animals
Artificial stocking is not good at systematic management
This problem can be solved by using GPS+GPRS livestock positioning system. However, the individual scale of cattle and sheep is huge, the capacity of GPRS communication base station will be insufficient, and there will be problems with battery life. Moreover, the farms are relatively remote, and the signal coverage strength will also have problems...
The birth of NB-IoT technology perfectly solves a series of problems:
NB-IoT can accommodate 10 times the user capacity of communication base stations than GPRS.
NB-IoT has ultra-low power consumption, the normal communication and standby current are mA and uA levels, the module standby time can be up to ten years, and there is no need to replace the battery from birth to slaughter, reducing the workload of workers.
NB-IoT has stronger and wider signal coverage, and truly realizes normal data transmission in remote areas.
NB-IoT technology really breaks through the bottleneck of GPRS technology, realizes what animal husbandry farmers want, and has a huge market in the huge animal husbandry industry.
Water and gas meters are closely related to our lives and are used in every household.
The most primitive method is manual door-to-door meter reading statistics. With the development of society, manual meter reading has various disadvantages:
low efficiency
High labor cost
Recording data is prone to errors
The owner is wary of strangers and will not be able to enter the door
Maintenance and management difficulties, etc.
GPRS remote meter reading thus came into being. It solves a series of problems of manual meter reading, and is more advanced, efficient and safer than manual meter reading.
However, GPRS remote meter reading also has shortcomings that make it impossible to popularize it in a large area:
The user capacity of the communication base station is small
High power consumption
Signal difference
The remote meter reading of NB-IoT technology solves this problem:
NB-IoT remote meter reading not only inherits the function of GPRS remote meter reading, but also has massive capacity. The communication user capacity of the same base station is 10 times that of GPRS remote meter reading.
With lower power consumption, the standby time of the NB-IoT terminal module can be as long as more than ten years under the same environmental conditions.
The new technology has stronger signal coverage (can cover indoors and basements).
Lower module cost.
To sum up, NB-IoT has great application space in remote meter reading.
Our city is under rapid construction, and the number of underground works for municipal public infrastructure is increasing, and the increase of manhole covers is inevitable.
Manhole covers play a huge role. If the status information of manhole covers cannot be obtained in time, it may cause great losses to people's lives and properties.
At present, most cities are managed by manual inspections. However, the number of manhole covers is huge, and the efficiency of manual inspection is limited. It is often impossible to obtain timely and accurate information on the status of manhole covers, resulting in various safety hazards.
The manhole cover is stolen, whether the manhole cover is damaged.
The theft or destruction of manhole covers will not only directly cause the loss of public property, but may also cause irreparable personal injury and economic loss to nearby pedestrians and vehicles.
How to eliminate these security risks has become a top priority.
Using NB-IoT to locate, monitor and manage the manhole cover can grasp the status information of the manhole cover in time, and use the NB-IoT network to send an alarm to the server to notify the management personnel when the manhole cover is moved or damaged, so as to avoid injury and loss to the greatest extent.
Advantages of manhole cover monitoring using NB-IoT technology:
Manual inspection is no longer required, and all data is automatically transmitted to the platform, saving a lot of human resources.
NB-IoT can accommodate 10 times the user capacity of communication base stations than GPRS, which can meet the huge number of manhole covers.
NB-IoT has ultra-low power consumption, the normal communication and standby current are mA and uA levels, and the standby time of the module can be as long as ten years, which greatly simplifies the maintenance of manhole cover monitoring in the later period.
NB-IoT has a stronger and wider signal that can cover indoors and basements, and truly achieve comprehensive coverage in manhole cover monitoring.
NB-IoT technology breaks through the bottleneck of GPRS technology and will surely shine in the wireless communication industry in the future.
With the popularity of the smart home industry in recent years, the frequency of smart locks in life is also increasing.
At present, smart locks use non-mechanical keys as the technology for user identification ID.
Mainstream technologies include: proximity card, fingerprint recognition, password recognition, facial recognition, etc., which greatly improves the security of access control.
However, the premise of the above security is that in the power-on state, if the smart lock is in the power-off state, it is useless.
In order to improve security, the smart lock needs to have a built-in battery, collect various basic data, transmit the data to the server, and automatically send an alarm to the user when abnormal data is collected.
Since it is not easy to disassemble after the smart lock is installed, the battery of the smart lock is required to have a long service life.
If the door is located in a closed corridor, stronger signal coverage is required to ensure real-time transmission of network data.
The number of smart home terminals is large, and a sufficient number of connections must be ensured.
The most important thing is that after adding the above functions, it can also ensure that the equipment cost is controlled within an acceptable range.
NB-IoT again shows great advantages:
NB-IoT has the characteristics of low power consumption, only two AA batteries can be used for ten years of standby, which greatly reduces the maintenance cost in the later period.
Super strong signal coverage, can cover indoor and basement, to ensure signal stability.
Massive connection, to meet the simultaneous connection of multiple terminals in the smart home.
When night falls, various and colorful street lamps in the city light up, putting on a gorgeous coat for the city.
But under this gorgeous appearance, there are huge shortcomings:
Energy waste: People have already started to rest after the middle of the night in the city, and the flow of people on the street has begun to decrease. Some areas do not need too much street lighting during special periods, resulting in energy waste and unnecessary costs;
Difficulty in maintenance: Due to the use of manual inspections, a lot of manpower is required, and the number of street lights is huge, and the real-time status of street lights cannot be obtained in time, resulting in extremely low maintenance and troubleshooting efficiency of street lights.
The monitoring center is the center of the operation, maintenance, processing, statistics, analysis and supervision of the entire street light monitoring system. It centralizes data management and monitoring to achieve target locking, quick search and other operations. It can also customize the control strategy, and control the street lights on both sides of the road to turn on, turn off, and turn on the lights in different time periods.
The roles that NB-IoT can play are as follows:
Using the NB-IoT wireless network, the remote distributed remote control of the monitoring center can be realized.
Street lamp fault detection function, which actively reports the location of faulty street lamps through NB-IoT.
The communication capacity of NB-IoT is large, and there is no need to worry about the situation that the individual cannot communicate due to too many street lights.
There are often fires in news reports. Every fire is accompanied by the destruction of homes and people, and every scene is shocking.
Raising awareness of firefighting and rational use of firefighting equipment can minimize losses and injuries.
The smoke sensor is the sentinel of the fire protection system, which can detect smoke in real time. When the sensor detects that the smoke concentration exceeds the standard, it will send the information to the background server, and activate the alarm bell, broadcast horn and other related equipment. The server will automatically push the information to the relevant personnel and departments. Intelligent fire safety.
In practical applications, according to fire protection requirements, the installation and distribution of smoke detectors are dense, which is inconvenient for wiring and high cost.
Using NB-IoT can completely meet the requirements:
The use of NB-IoT wireless smoke detectors can avoid the problem of difficult wiring and greatly save installation costs.
NB-IoT has a large number of connections, and the number of smoke detectors connected at the same time can reach more than 100,000, which can meet the simultaneous access of a large number of smoke detectors.
NB-IoT has ultra-low power consumption and can work for ten years in standby state, which greatly reduces the maintenance cost after installation.
NB-IoT has super strong signal coverage, which can cover indoors and basements.
With the in-depth development of informatization and various intelligent terminal equipment, the demand for personnel and asset positioning will continue to heat up.
The applications in the field of location services also show the characteristics of fragmentation, such as: asset inventory of smart parks, medical waste tracking and treatment, pet positioning...
The vast majority of trackers on the market today are based on GSM in wide-area communication technology, and power consumption is a big problem.
The large chip area, high cost, and relatively low coverage of GSM happen to be contrary to the needs of location trackers.
The technology of GSM is backward, resulting in poor product experience of location trackers, and some countries have withdrawn from the network or are facing the withdrawal of GSM, resulting in a continuous shortage of such products and technologies.
NB-IoT技术的低功耗和深度覆盖属性，正好弥补了传统通信技术的诸多不足。
后记
以上我们只是列举了NB-IoT应用的其中一部分。
其实它还有很多应用场景，比如：NB-IOT共享单车智能锁、NB-IOT儿童防丢失手表（纽扣）等等，限于篇幅，我们就不一一介绍了。
总而言之，NB-IoT技术作为蜂窝物联网的代表性技术，凭借其低功耗，广覆盖，低成本，小尺寸等特点，具有非常广泛的应用前景和市场价值，值得大家予以重视和关注！