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Real-time wireless measurement system platform  is a new real-time wireless sensor network, which is composed of the network controller, wireless temperature, pressure, vibration, heat flow and other wireless sensors and handheld beacon unit. The sensitive data collected by various wireless sensors are transmitted to the network controller through wireless channels to realize the wireless measurement of multi-variable and multi-channel data. The system platform provides important support for realizing the goals of "untetherization" and "unattended" of the measurement system. It has the characteristics of flexible configuration, independent networking, self-owned increase and decrease, and high reliability. 1.1 Typical applications Wireless data sensitivity and acquisition subsystem on arrow. The system completes the acquisition of non-electric parameters such as temperature, pressure, vibration and heat flow in the rocket cabin, and sends the collected signal...

The network line is not essential for smart meters now. So how is it possible for the smart meter to realize data transmission? The following household article is to share the topic of the smart meter data transmission with you. Smart meter data transmission is now mainly in two ways: one is the power line carrier mode to receive and transmit data, the other is RS485 communication. Firstly, let me tell you about the power line carrier mode of  smart meters : power line carrier, which is to rely on the power line to transmit data, can only be used in the same transformer circuit, transmitting to the terminal. And then the terminal will send it to the power metering system of the power bureau wirelessly; In this way, there is a module at the bottom of the meter, namely the power carrier module. After data processing in the circuit is completed, it will be transmitted to the power carrier module. After data processing, the module will be transmitted to the terminal. This method is a...

The utility model relates to a circuit device for a phase detector of a high-voltage three-phase power supply, in particular to a phase detector of a  3 phase energy monitoring devices  using a wireless working mode. The device comprises a first sending device, a second sending device and a receiving device; The first sending device and the second sending device have the same circuit structure. They both include a sending antenna, a signal acquisition and processing circuit and a phase signal modulation circuit. The receiving device has a first receiving antenna circuit, a first demodulation circuit, a first low pass filter circuit, a second receiving antenna circuit, a second demodulation circuit, a second low pass filter circuit, a microprocessor and a liquid crystal display driver circuit. The utility model has the advantages of intuitive reading, complete functions, convenient operation and good safety. The  3 phase energy monitoring devices  is characterized as ...

At present, there are many kinds of technologies used for meter reading in China. Due to the influence of technology and the objective conditions of domestic power grid, many technical problems still exist. Now, the development of domestic  power monitoring system  has become the mainstream of meter reading industry. It not only completely avoids the drawbacks of the previous meter reading methods, but also benefits users with excellent network security and low operating costs, making it possible to build a meter reading system with cheap equipment and free from the limitations of distance and space. The current power monitoring system meter terminal can report the meter data at fixed point and time on its own according to the setting, and the meter reading center can take the initiative to read the value of any piece of meter at any time. Meanwhile, the data will be automatically stored in the database for the convenience of later query by operators. The system can autom...

Smart home electricity meters  requirements: In October 2009, China put forward the standards of state grid smart meters enterprise, and had made a more clear requirement for smart meters. Although this year's standards are in the process of being fully revised, the basic requirements for smart meters are still clear, and it normally has the following functions. 1. Two-way power transmission and metering functions are required as the in-door interface of the power grid. On the one hand, the power grid delivers safe and high-quality power to users' electrical equipment through smart meters. On the other hand, with the wide application of new energy, many distributed new energy sources, such as wind energy and solar energy, have been fully used by users. This kind of micro-distributed energy can also be fed back into the power grid through smart meters and connected with the power grid. Therefore, it is necessary for smart meters to have two-way power transmission and metering...

In order to make the enterprise finish resource allocation, organize production, completion and settlement, cost accounting better, we needs to establish a set of effective energy automation data acquisition system, monitoring the energy supply, so as to realize real time control of the energy situation and the energy automation regulation and control under the firm data foundationthe, meanwhile, to enable enterprise to achieve convenient measurement and cost accounting work. System introduction Energy data has the characteristics of standardization, specialization, scientization and timeliness, and is difficult to collect. At the same time, considering the importance of energy data for enterprise decision-making and the dangerous nature of energy itself, higher requirements should be put forward for the energy data acquisition system established by enterprises. Therefore, enterprise energy management system (hereinafter referred to as EMS) must meet the demand of strong professio...

In recent years, although the development of China's security industry is relatively short, the development of China's security industry is very rapid and is one of the important areas of the Internet of things applications. It is combined with the characteristics of the Internet of things, and will give the security industry full of vitality. With the continuous investment of users in the monitoring system, its application becomes more and more in-depth and highly dependent. The basic functional modules included in a single monitoring system can no longer meet the needs of today's industrial applications. The application of fusion monitoring system and the overall framework which is similar to the Internet of things system provide customers with end-to-end comprehensive solutions. 1) Terminal fusion is conducive to thorough perception The isolated construction of traditional systems such as dynamic environment monitoring, intelligent access control, security preventio...