CN209857943U - A NB-IoT IoT slope monitoring system - Google Patents

Abstract

The utility model discloses an NB‑IoT Internet of Things slope monitoring system, which comprises three parts: a measuring end, a cloud, and a receiving end. For the problem of wide distribution and large number of sensors, first use the data measurement group to collect slope data in a small range, and then transmit the data to the NB-LoT module through the wireless data transmission station, and then the NB-LoT module will measure a data The data measured by the group is packaged and sent to the IoT cloud platform. Reduce the number of nodes connected to the IoT cloud platform and reduce the cost of data transmission. Users can obtain real-time monitoring data of slopes on the Internet of Things cloud platform through mobile terminal devices such as computers or mobile phones. The sensor data acquisition in the data measurement group and the data transmission in the NB-LoT module are all controlled by the single-chip microcomputer system. This system solves the problems of manual inspection, single function, poor expansibility and low data utilization rate of the traditional detection system.

Description

A NB-IoT IoT slope monitoring system

technical field

The utility model belongs to the field of automatic monitoring of slopes in the fields of highways and geotechnical engineering, and relates to a slope monitoring system of the NB-IoT Internet of Things.

Background technique

my country's geological conditions are complex, and the occurrence of landslide accidents will bring very large losses and serious casualties to the economy of the country and the people. Therefore, it is of great economic value and social significance to detect and warn the state of the slope, and it is convenient to deal with the risk factors in time to ensure the safety of the slope.

At present, traditional slope detection systems mostly use wired transmission to upload detection data or engineers manually collect data collected by sensors. The way of wired network transmission is limited by the transmission distance. In actual engineering, the working environment is harsh, and wired transmission is easily disturbed by the external environment. There are also some slope detection systems that use the GSM transmission network to transmit data, which eliminates the various disadvantages of wired transmission and greatly increases the transmission distance. However, the transmission speed of the GSM network is slow, it is difficult to meet the requirements of large data transmission, the data receiving equipment is single, and the data utilization rate is low.

NB-LoT has the following characteristics: wide coverage, under the same frequency band, NB-IoT is 100 times larger than the existing network coverage area; has the ability to support massive connections, and one sector of NB-IoT can support 100,000 connections ;Low power consumption, the standby time of NB-IoT terminal module can be as long as 10 years; Low module cost, the price of NB-IoT terminal module is lower than that of GSM module. Based on the various advantages of NB-LoT, the designed IoT slope monitoring system has stronger advantages than the existing slope detection system in terms of coverage, number of nodes, power consumption and cost.

Contents of the invention

The purpose of the utility model is to provide a NB-IoT slope monitoring system of the Internet of Things, which can solve the requirements of multi-parameter automatic collection and wireless transmission of slope engineering.

An NB-IoT IoT slope monitoring system is characterized in that: it includes a transmitter, a cloud, and a receiver; the transmitter is composed of several data measurement groups; the receiver is composed of computers, mobile phones and other networked devices.

The data measurement group is composed of several measurement nodes and NB-IoT modules, and the measurement nodes and NB-IoT modules transmit data through wireless data transmission. The distance between the measurement node and the NB-IoT module shall not exceed 4KM. The measurement node is composed of sensors, control modules and wireless data transmission stations. Sensors include pressure sensors, displacement sensors, axial force sensors and acceleration sensors.

The NB-IoT module is composed of a wireless data transmission station, a control module and an NB-IoT module. The core chip of the control module adopts STM32F429 high-performance single-chip microcomputer. The core chip of the wireless data transmission station adopts the SX1278 communication chip.

The measurement nodes are distributed and placed on the slope site to measure various data of the slope. All measurement nodes in the same data measurement group send the measured data to the NB-IoT module through wireless data transmission. The NB-IoT module All the data is packaged, encoded and sent to the IoT cloud platform through the NB-IoT module. In this way, the number of nodes connected to the Internet of Things platform can be reduced, the cost of data transmission can be reduced, and the large amount of data transmitted by NB-IoT can be reasonably utilized. At the receiving end, mobile phones, computers or other terminal devices that can access the Internet can be used. Compared with traditional wireless monitoring systems, it has the advantages of diversified and convenient viewing methods.

Using all the slope state data stored in the cloud, it is possible to analyze and warn the slope state, and send an alarm before an imminent slope accident, reducing casualties and economic property losses. The data in the cloud can be used to develop various targeted service software. Based on the Internet of Things cloud platform, the receiving end can view slope status data in more diversified ways, and can use mobile phones, computers or other terminal devices that can access the Internet. It is more convenient to view slope data, and the detection of slope status is more real-time.

Description of drawings

Figure 1 is a schematic diagram of a NB-IoT IoT slope monitoring system.

Fig. 2 is a schematic diagram of data transmission of a data measurement group.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

An NB-IoT IoT slope monitoring system is characterized in that: it includes a transmitter, a cloud, and a receiver; the transmitter is composed of several data measurement groups; the receiver is composed of computers, mobile phones and other networked devices.

The data measurement group is composed of several measurement nodes and NB-IoT modules, and the measurement nodes and NB-IoT modules transmit data through wireless data transmission. The measurement node is composed of sensors, control modules and wireless data transmission stations. The sensors include pressure sensors, displacement sensors, axial force sensors and acceleration sensors, and the sensors output voltage signals. The measurement node also includes a rechargeable lithium battery module to provide energy for its operation. The measurement nodes are distributed and arranged at the slope measurement site, and the distance between the measurement nodes and the NB-IoT module does not exceed 4KM.

The NB-IoT module is composed of a wireless data transmission station, a control module and an NB-IoT module. The core chip of the control module adopts STM32F429 high-performance single-chip microcomputer, the highest frequency is up to 180MHZ, and it has ADC, RS-485, timer and other resources inside.

The core chip of the wireless data transmission radio station adopts SX1278 communication chip, the communication interface adopts RS-485, the working power is 1W, the data transmission distance can reach 8000 meters, and the data transmission is stable and anti-interference ability is strong.

The measurement nodes are distributed and placed on the slope site to measure various data of the slope. All measurement nodes in the same data measurement group send the measured data to the NB-IoT module through wireless data transmission. The NB-IoT module All the data is packaged, encoded and sent to the IoT cloud platform through the NB-IoT module. In this way, the number of nodes connected to the Internet of Things platform can be reduced, the cost of data transmission can be reduced, and the large amount of data transmitted by NB-IoT can be reasonably utilized. At the receiving end, mobile phones, computers or other terminal devices that can access the Internet can be used. Compared with traditional wireless monitoring systems, it has the advantages of diversified and convenient viewing methods.

The sensor collects slope data every 2 hours. The single-chip software system will clear the watchdog timer every cycle to prevent the watchdog timer from overflowing. If the MCU software system crashes or executes the program abnormally, the watchdog timer will not be cleared and the watchdog timer overflows. After the overflow, the watchdog hardware circuit will restart the MCU system to increase the stability and reliability of the system. sex.

Using all the slope state data stored in the cloud, it is possible to analyze and warn the slope state, and send an alarm before an imminent slope accident, reducing casualties and economic property losses. The data in the cloud can be used to develop various targeted service software. Based on the Internet of Things cloud platform, the receiving end can view slope status data in more diversified ways, and can use mobile phones, computers or other terminal devices that can access the Internet. It is more convenient to view slope data, and the detection of slope status is more real-time.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and the protection scope of the present invention should be based on the protection scope of the claims.

Claims (6)

1. A NB-IoT Internet of Things slope monitoring system, characterized in that: comprise a transmitter, a cloud and a receiver; the transmitter is made up of several data measurement groups; the receiver consists of a computer (4), a mobile phone (5) composition; the data measurement group is composed of several measurement nodes (1) and NB-IoT modules (2), and the measurement nodes (1) and NB-IoT modules (2) are transmitted through wireless data transmission Data; the distance between the measurement node (1) and the NB-IoT module (2) does not exceed 4KM. 2. A NB-IoT IoT slope monitoring system according to claim 1, characterized in that: the measurement node (1) is composed of a sensor, a control module and a wireless data transmission station. 3. A NB-IoT IoT slope monitoring system according to claim 2, wherein said sensors include pressure sensors, displacement sensors, axial force sensors and acceleration sensors. 4. A kind of NB-IoT IoT slope monitoring system according to claim 1, characterized in that: the NB-IoT module (2) is composed of a wireless data transmission station, a control module and an NB-IoT module . 5. A NB-IoT IoT slope monitoring system according to claim 2 or 4, characterized in that: the core chip of the control module adopts STM32F429 high-performance single-chip microcomputer. 6. A NB-IoT IoT slope monitoring system according to claim 2 or 4, characterized in that: the core chip of the wireless data transmission station adopts the SX1278 communication chip.