CN209373390U - A kind of mobile operation/maintenance data acquisition system of power telecom network - Google Patents

Abstract

A kind of mobile operation/maintenance data acquisition system of power telecom network, it include handheld terminal and acquisition terminal in composition, therebetween information is exchanged by wireless signal, the acquisition terminal includes sensor, A/D converter, acquisition controller, radio receiving transmitting module and storage chip, the output end of the sensor connects the input end of analog signal of A/D converter through signal amplification circuit, the A/D converter and storage chip are connect by bus with acquisition controller, and the radio receiving transmitting module, which is connected with the serial ports of acquisition controller and passes through wireless signal, exchanges information with handheld terminal.The collected operation/maintenance data of sensor is uploaded to handheld terminal by Bluetooth wireless transmission technology by the utility model, it not only can effectively promote the execution efficiency of maintenance work, meet the design requirement of smart grid, and difficulty of construction is small, easy to operate, safety, to eliminate accident potential, the life security of operation maintenance personnel ensure that.

Description

A mobile operation and maintenance data acquisition system for electric power communication network

technical field

The utility model relates to a device for collecting mobile operation and maintenance data of a power communication network, which belongs to the technical field of communication.

Background technique

The power communication network is a communication network that ensures the safe and stable operation of the power system. It is one of the three pillars for the safe and stable operation of the power system, and it is also the basis for power grid dispatching automation, network operation marketization, and management modernization. Since the power communication network has strict requirements on the reliability of communication and the speed and accuracy of protection and control information transmission, the power companies in most countries in the world have built their own dedicated communication networks for their power systems.

With the rapid development of electronic information and Internet technology, as well as the promotion of multi-energy power generation technology, the traditional power communication network is no longer suitable for the current power grid development needs, replaced by the Electric Cyber Physical Convergence System (ECPS), which is also a smart Necessary prerequisite for grid popularization. Due to the influence of information security and other factors, the development of the power communication network operation and maintenance system is relatively slow. At present, the power communication network operation and maintenance still uses manual methods for equipment positioning and information reading. The disadvantage of this data collection method is that the work efficiency is low. , the effectiveness and accuracy of equipment physical location positioning and information reading cannot be guaranteed, and due to the complex and changeable actual situation on site, the construction is very difficult, and the life safety of operation and maintenance personnel cannot be guaranteed. In addition, with the rapid expansion of the scale of the power communication network and the expansion of business types, the requirements for the power communication operation and maintenance system are getting higher and higher. Not only does it need to monitor various communication systems in real time, but it also needs to have fault warning and rapid fault handling. The ability of the existing data acquisition system can no longer meet the design requirements of the smart grid. Therefore, it is very necessary to design a high degree of automation, convenient operation and safety data acquisition system for power communication network operation and maintenance.

Utility model content

The purpose of the utility model is to provide a mobile operation and maintenance data collection system for electric power communication network to improve the efficiency of operation and maintenance data collection and eliminate the hidden danger of accidents in view of the disadvantages of the existing technology.

Problem described in the utility model is solved with following technical scheme:

A data collection system for mobile operation and maintenance of a power communication network, comprising a handheld terminal and a collection terminal, which exchange information through wireless signals, and the collection terminal includes a sensor, an A/D converter, a collection controller, a wireless transceiver module and memory chip, the output end of the sensor is connected to the analog signal input end of the A/D converter through the signal amplification circuit, the A/D converter and the memory chip are connected with the acquisition controller through the bus, and the wireless transceiver module It is connected with the serial port of the acquisition controller and exchanges information with the handheld terminal through wireless signals.

In the mobile operation and maintenance data acquisition system of the electric power communication network, the address bus input end of the memory chip is provided with an address latch.

In the mobile operation and maintenance data acquisition system of the electric power communication network, an address decoder is provided at the input end of the chip selection signal of the A/D converter and the memory chip, and the address decoder is connected to the bus.

In the mobile operation and maintenance data acquisition system of the electric power communication network, the wireless transceiver module adopts a Bluetooth module, and the Bluetooth module is connected to the serial port of the acquisition controller through a level conversion module.

In the mobile operation and maintenance data acquisition system of the electric power communication network, the acquisition controller adopts an AT89C51 single-chip microcomputer.

The utility model uploads the operation and maintenance data collected by the sensor to the handheld terminal through the Bluetooth wireless transmission technology, which can not only effectively improve the execution efficiency of the operation and maintenance work, meet the design requirements of the smart grid, but also have low construction difficulty, and the operation is very convenient and safe. Thereby eliminating hidden dangers of accidents and ensuring the safety of operation and maintenance personnel.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is the electric principle block diagram of the present utility model;

Figure 2 is an electrical schematic diagram of the acquisition terminal.

The list of labels in the figure is: U1, acquisition controller, U2, A/D converter, U3, wireless transceiver module, U4, memory chip, U5, address latch, U6, address decoder, U7, first A level conversion module, U8, a second level conversion module.

Detailed ways

Referring to Fig. 1 and Fig. 2, the utility model includes a handheld terminal and a collection terminal, wherein the collection terminal includes a sensor in field operation and maintenance equipment, a collection controller U1, an A/D converter U2, a wireless transceiver module U3, and a storage chip U4 , an address latch U5, an address decoder U6, and a level conversion module (including a first level conversion module U7 and a second level conversion module U8). The wireless transceiver module mainly realizes the real-time transmission of data through the Bluetooth function, and finally the data is received and processed by the handheld terminal.

The acquisition controller U1 adopts a single-chip microcomputer model AT89C51. The information read by the sensor of the acquisition terminal during on-site operation and maintenance is converted into a digital signal by the A/D converter U2 of the model AD574A, so as to reduce the signal in the data transmission process. in the interference. After the acquisition terminal receives the acquisition command sent by the handheld terminal, it converts the obtained data through two level conversion modules of model MAX3232 and sends them to the wireless transceiver module U3 (ie, the Bluetooth module) for uploading. In Figure 1, the signal transmission part between the sensor and the A/D converter U2 mainly uses a signal amplification circuit, which is mainly composed of several operational amplifiers. The operational amplifier used in this system is TL082. Operational amplifiers are characterized by high precision.

In Figure 2, the interface between the acquisition controller U1, the A/D converter U2 and the memory chip U4 has a unique design. The acquisition controller U1 passes the address decoder U6 of the model 74LS138 and the address The latch U5 implements functions such as data storage. The RS232 transmission interface is used between the Bluetooth module and the AT89C51 serial port to realize the communication function, but the circuit needs an external circuit to realize the level conversion function. Since the Bluetooth module used in this system needs 3.3V power supply, the MAX3232 chip is selected as the power supply. Flat conversion module. In order to convert the normal 5V input voltage to 3.3V real-time voltage, the commonly used power supply voltage regulator chip 7301 is used to supply power to the Bluetooth module.

Claims (5)

1. A power communication network mobile operation and maintenance data collection system, characterized in that, the composition includes a hand-held terminal and a collection terminal, and information is exchanged by wireless signals between the two, and the collection terminal includes a sensor, an A/D converter ( U2), acquisition controller (U1), wireless transceiver module (U3) and memory chip (U4), the output end of described sensor is connected the analog signal input end of A/D converter (U2) through signal amplifying circuit, described The A/D converter (U2) and the memory chip (U4) are connected to the acquisition controller (U1) through the bus, and the wireless transceiver module (U3) is connected to the serial port of the acquisition controller (U1) and connected to the handheld terminal through a wireless signal Exchange information. 2. The data acquisition system for mobile operation and maintenance of electric power communication network according to claim 1, characterized in that, the address bus input end of the memory chip (U4) is provided with an address latch (U5). 3. according to claim 1 and 2 described power communication network mobile operation and maintenance data acquisition systems, it is characterized in that, the chip selection signal input end of described A/D converter (U2) and storage chip (U4) is provided with address A decoder (U6), the address decoder (U6) is connected to the bus. 4. the power communication network mobile operation and maintenance data acquisition system according to claim 3, is characterized in that, described wireless transceiver module (U3) adopts bluetooth module, and described bluetooth module is connected with acquisition controller (U1 by level conversion module) ) serial port connection. 5. The mobile operation and maintenance data acquisition system of electric power communication network according to claim 4, characterized in that, said acquisition controller (U1) adopts AT89C51 single-chip microcomputer.