At present, automated production and unattended smart devices are no longer technical barriers. Facing the deteriorating living environment, how to comprehensively monitor and manage the water quality environment, air environment, and geological environment problems need to be improved. This article will use zigbee wireless technology to provide wiring difficulties. , Remote monitoring, automatic monitoring, data uploading and other related solutions.
The reservoir safety monitoring system includes two parts: water volume monitoring and dam safety monitoring. The system collects information from the reservoir through sensing equipment such as water level, camera, rainfall, and stress. The collection equipment transmits the collected information to the zigbee gateway through zigbee, and the gateway packages the data and transmits the information to the server through GPRS/4G. The server performs data processing and real-time monitoring of the status of the reservoir.
Water volume monitoring: Water volume monitoring is to collect information through water level gauges, rainfall monitors, and industrial cameras. The water level monitor monitors the depth of the water level, the camera can take pictures and upload the water surface conditions, or video monitoring, and the rainfall monitor monitors the rainfall. In the seasons with frequent rainstorms, the monitoring of water level and rainfall, as well as the auxiliary monitoring of cameras, can provide a reliable assessment of the water level of the reservoir. The figure below is a diagram of the water monitoring system.
Dam safety monitoring: Dams are the core point of reservoir safety, and floods in reservoirs are basically caused by the collapse of the dam. The performance of the dam will be affected under the impact of water flow. The monitoring items of the dam mainly include deformation, stress, temperature, seepage flow, uplift pressure and expansion joints, etc. The relevant sensors are used to monitor the dam, and the data is uploaded to the zigbee gateway through zigbee and forwarded to the server for data calculation. The system picture is as follows.
In the reservoir safety monitoring system, the main communication technologies applied are zigbee wireless local area networking and GPRS/4G wide area communication. The reservoir safety monitoring system has a large number of monitoring points and is scattered, requiring efficient management of wireless intelligent networks and battery power, and low power consumption of monitoring nodes. The advantages of Zigbee technology applied to monitoring nodes are as follows:
The network capacity has 65,535 terminal nodes, which can support the network of numerous nodes for reservoir safety monitoring.
The power consumption of the terminal node is as low as 100nA, and it can work for a long time with battery power supply without wired power supply and frequent maintenance.
Support the relay function. In the case of a wide range of monitoring nodes, the wireless relay function can be used to increase the communication distance and reduce the number of gateways.
Supports multi-channel remote IO and remote AD. The built-in MCU can be used for secondary development as the controller of the acquisition node.
The network has the characteristics of self-adjustment and self-repair, which brings reliable guarantee to the data transmission network.
There are two main types of zigbee modules of ZLG Zhiyuan Electronics. One type is a pure serial port to zigbee module. During operation, only one serial port can be used to operate the module. The module has integrated a transparent transmission protocol, and the user does not need to make any agreement. Development, only need to operate the serial port to realize the wireless sending and receiving of data. The second type is the form of MCU+zigbee module, which is composed of MCU (M0, M7, ARM9, A7) and zigbee module. There are many resources on the MCU, SDK package is provided, and secondary development is supported. The product picture is shown below.
The reservoir monitoring system uploads data to the server through zigbee to GPRS/4G gateway. ZLG Zhiyuan Electronics launched IoT-3968L as a LAN to WAN gateway. IoT-3968L is a gateway controller for secondary development of IoT industry users. It has the following characteristics.
It adopts ARM9 kernel, pre-installed Linux operating system, supports secondary development, and collects data processing and protocol development in the gateway.
Equipped with dual Ethernet ports, supports 10/100M adaptive Ethernet and dual network port switch functions. You can connect an external network camera and perform Ethernet communication.
Equipped with 485 and CAN interfaces, it can be connected with wired communication collection equipment such as rain gauges.
Equipped with two MiniPCIE interfaces, one is connected to wireless LAN modules such as LoRa, ZigBee, WiFi, and the other is connected to 3G/4G/GPRS WAN module, to realize the intercommunication between LAN and WAN, and upload data to the central server.
Equipped with USB, TF card and other memory interfaces, which can store data locally.
Support remote firmware upgrade, easy maintenance.
The picture is shown below.
Combining zigbee technology and GPRS/4G technology for reservoir monitoring system is already a relatively mature solution. In terms of specific product selection, overall evaluation can be made according to actual application scenarios.
Neoprene Velcro Cable Sleeve,Expandable Braided Cable Sleeving,Computer Cable Sleeves,Automotive Wire Sheathing
Shenzhen Huiyunhai Tech.Co., Ltd. , https://www.cablesleevefactory.com