Multi-level wireless temperature measurement solution based on Internet of Things technology
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Overview
In today
Internet of Things
In application, sensing technology, acquisition technology and communication technology are continuously highly integrated and applied in various industries. With the continuous deepening of applications, how to build a flexible, fast, and low-cost ubiquitous communication network plays a vital role in the entire Internet of Things application system.
Beijing Wanwei Yingchuang Technology has launched a multi-level wireless communication solution for distributed wireless sensor networks. This solution utilizes the widely used 433M short-wave digital transmission module, ZigBee, WiFi and other short-distance wireless transmission technologies, and GPRS/CDMA/3G and other long-distance wireless transmission technologies to solve various types of distributed sensors, on-site acquisition units, The multi-level wireless communication requirements of the central monitoring platform set up a widely applicable “Internet of Things” system platform.
System schematic
System composition
Wireless sensor
Various types of temperature, pressure, flow and other wireless sensors with 433M, ZigBee, WiFi wireless communication interfaces or various conventional sensors have the above wireless communication functions after the communication interface is modified.
i-HMI Smart IoT Terminal
Capable of receiving data from 433M, ZigBee, WiFi wireless sensors, while storing the received data locally, transmitting the received data to the remote monitoring center platform through the built-in GPRS/CDMA/3G module after protocol conversion, and supporting local data query and front-end sensors Abnormal alarm and other functions.
Receive and store (stored in) the original data on the site, and can perform equipment management and remote diagnosis on the site. Provide users with an open data interface to facilitate the formation of various data representation forms such as bar graphs, pie graphs and various reports.
typical application
It is widely used in various fields related to the Internet of Things: digital factories, smart transportation, digital oil wells, smart grids, digital municipalities, corporate safety supervision and environmental monitoring.
Application example: wireless temperature measurement system for oil film bearings
The temperature in the inner temperature bushing of the large oil film bearing in the steel rolling production line is always a concern of the production and maintenance personnel. The temperature measurement points are distributed far away, and there are many temperature measurement points. For a long time, it has been troubled by a large number of long-distance instrumentation and wiring problems. It is both cumbersome and scattered, and does not meet the requirements of modern digital centralized management and control.
The system adopts a secondary wireless communication solution, which integrates the temperature measuring thermal resistance and the data transmission module, and uses the 433M frequency band to form a wireless temperature measurement sensor. The primary communication is transmitted to the i-HMI intelligent Internet of Things terminal, and then this The built-in non-following transmission module (shortwave 230MHZ) of the terminal transmits to the monitoring center over a long distance, and the entire system can realize real-time collection of temperature data without wiring.
Schematic diagram
The system makes good use of the functional characteristics of the two-level wireless communication of the i-HMI intelligent Internet of Things terminal, which solves the problem of wirelessly receiving the data of the temperature measurement sensor locally, and at the same time wirelessly sending the data to the remote end.
Applicable field
This system can also be applied to various wireless collection of temperature, pressure, flow and other industrial automatic control and meteorological, environmental protection, hydraulic, municipal, intelligent transportation and other measurement and control systems
Application example (two): radiation environment χ, γ dose wireless alarm system
Wireless χ and γ-ray detection alarms, using GM counter tubes or Nal scintillators, measure accurate environmental radiation dose rate, and mainly realize real-time monitoring of the gamma dose rate at various points in the radiation environment area. When the radiation dose rate in the monitored area exceeds the preset alarm threshold, the system will promptly send an alarm signal on site and in the monitoring room to ensure personnel safety.
The use site of the radioactive source usually does not have the conditions for conventional wiring. Therefore, the wireless x-ray and gamma-ray detection alarm usually supports two short-distance wireless communication methods of 433M/ZigBee, which can be used for various types of sources in the environment where the radiation source is located. Intensive measurement is carried out around to achieve the purpose of safety alarm.
Choose the i-HMI intelligent IoT terminal of Beijing Wanwei Technology, which can directly collect wireless X, γ-ray detection and alarm data to this terminal. In addition to viewing local data, you can use the DO that comes with the i-HMI intelligent IoT terminal. The interface-driven alarm realizes simultaneous sound and light alarm, and at the same time transmits this data to the Environmental Protection Agency through the built-in GPRS/3G/module.
Topology
Switchboard telephone: 010-51297180
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