CN201732175U - Data acquisition system of nuclear power plant meteorological station - Google Patents

Abstract

The utility model relates to a data collection system for a meteorological observation station of a nuclear power plant, which comprises sensors respectively arranged on each layer of an iron tower for measuring wind and temperature elements, sensors arranged on the ground for measuring various meteorological elements on the ground, and sensors corresponding to each other. The signal processing modules that are matched and connected, and the embedded industrial computer connected to each signal processing module by bus communication, each signal processing module and the embedded industrial computer form an independent transmission channel, and the embedded industrial computer is used for receiving and Process and store and display the data sent by each signal processing module. The utility model uses a small embedded industrial computer to process and store centralized data in the system, and uses an independent module to process the signal of each sensor, which avoids the failure caused by the clock error of multiple systems, and can be used according to the fault when a fault occurs Fault phenomenon and error elements Determine which channel has a problem and replace the corresponding module, which can shorten the maintenance time and ensure data acquisition.

Description

Data Acquisition System of Nuclear Power Plant Meteorological Observation Station

technical field

The utility model relates to a meteorological data acquisition system, in particular to a meteorological observation and acquisition system used in nuclear power plants.

Background technique

For many years, in the process of meteorological observation at nuclear power plant sites, due to the need to observe more meteorological elements than conventional meteorological stations, it involves the wind temperature gradient observation of the 100-meter meteorological tower and the observation of conventional ground meteorological elements. There is no domestic set specifically for nuclear power plants The data acquisition and processing system for site meteorological observation generally adopts the following modes:

(1) Collector in the form of single-chip microcomputer: At present, general meteorological stations all use data collectors with single-chip microcomputer structure. In the application of meteorological observation in nuclear power plants, several single-chip microcomputers are used to form multiple collectors in the ground meteorological observation and iron tower gradient observation parts. The collection is carried out separately, and then aggregated and processed by a single-chip microcomputer. After combination, the needs of the meteorological observation data collection elements of the nuclear power plant site are met. The main disadvantage of this method is that the amount of data stored by the collector is small, generally three months, while the nuclear power plant The meteorological observation at the plant site is generally one to two years, and the data is more than that of the general weather station. If the data inspection or permanent storage of the data is required on site, an additional computer is required to store the data and monitor the quality of the data on site. However, due to the instability of the GPRS signal, the guaranteed rate of data transmission cannot reach 100%. At the same time, due to the use of multi-single-chip microcomputer systems for collection, because the clock errors of each single-chip microcomputer are not the same, clocks will appear when the system summarizes data or each system communicates. Synchronization error causes the whole or part of the MCU system to crash and fail to work normally.

(2), industrial computer system, it is to utilize industrial computer to add data acquisition card mode, each element of meteorological iron tower and ground observation station is input into data acquisition card after signal transformation, utilizes industrial computer to carry out data acquisition processing and storage, has guaranteed Data storage reliability. However, this system also has certain shortcomings. First, the power consumption of industrial computer equipment is relatively large; second, because nuclear power plants are generally located in areas with frequent thunderstorms such as mountainous areas and seasides, there are many faults caused by thunderstorms in meteorological equipment. When the collection of meteorological elements When all data is obtained through the acquisition card, it is difficult to judge the part of the problem in time after a failure occurs, or all data acquisition is affected due to the damage of a certain part of the acquisition card.

Utility model content

The purpose of the utility model is to provide a data acquisition system for nuclear power plant meteorological observation stations which centrally processes the collected data and has independent transmission channels.

In order to achieve the above object, the technical solution adopted by the utility model is: a data acquisition system for the meteorological observation station of a nuclear power plant, which includes sensors respectively arranged on each floor of the iron tower for measuring wind temperature elements, and arranged on the ground for measuring The sensors of the meteorological elements on the ground, the signal processing modules that are matched and connected to the sensors, and the embedded industrial computers that are connected to each signal processing module by bus communication, each signal processing module and the embedded industrial computer form an independent The transmission channel, the embedded industrial computer is used to receive and process the data sent by each signal processing module, store and display.

Further, the embedded industrial computer also has a built-in GPRS module for remote data transmission.

Due to the adoption of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art: the utility model adopts a small embedded industrial computer for system centralized data processing and storage, and at the same time uses an independent The module is executed, and then transmitted in the form of a bus, which avoids the failure caused by the clock error of multiple systems, and when a failure occurs, it can be judged which channel has a problem according to the failure phenomenon and the error element, and the corresponding module can be replaced, which can shorten the maintenance time and ensure data acquisition.

Description of drawings

Accompanying drawing 1 is the implementation schematic diagram of the utility model

Among them: 1. Sensor; 2. Signal processing module; 3. Embedded industrial computer; 31. Storage unit; 32. Display unit; 33. GRPS module; 4. Bus; 5. Power supply module;

Detailed ways

The concrete implementation of the present utility model is described below in conjunction with accompanying drawing:

The meteorological observation data acquisition system shown in Figure 1 is mainly used in nuclear power plants. The meteorological elements to be observed include the wind temperature gradient of the 100-meter meteorological iron tower and the observation of various elements on the conventional ground. The tower body gradient includes four Layer wind direction, wind speed and four-layer temperature measurement, ground meteorological elements include surface air temperature, surface temperature, humidity, air pressure, total radiation, net radiation, rainfall, etc. The utility model acquisition system is to set sensors 1 at each position that needs to be observed, each The output end of the sensor is connected with the corresponding signal processing module 2, and each signal processing module 2 is connected with an embedded industrial computer 3 by bus 4, wherein, the described sensor 1 adopts different sensors according to the objects observed, Such as temperature sensor, humidity sensor, etc., the output signals of different sensors 1 are different, there are analog signals, digital signals, and switch signals, so each signal processing module 2 is matched with the corresponding sensor 1, and each signal processing module 2 will receive The signal is finally transformed into a standard transmission signal output. The communication bus between the embedded industrial computer 3 and each signal processing module 2 can be a 485/232 bus. The embedded industrial computer 3 has a built-in storage unit 31 and a display unit 32. Industrial control Machine 3 reads the data collected by all sensors on each bus channel through the pre-designed sampling frequency, organizes and calculates the received data, stores and displays the calculated and processed data.

In order to carry out remote transmission of data, in the utility model, the embedded industrial computer 3 also has a built-in GPRS module 33 .

The system is also provided with a power supply module 5, which is used to provide working voltage for each sensor, signal processing module and industrial computer.

The utility model uses a small embedded industrial computer to process and store centralized data in the system, and at the same time adopts an independent modular method for signal acquisition and A/D conversion of each sensor, and transmits it in the form of a bus, which is carried out by the industrial computer. Data processing, system display and storage are integrated in a collection system, which avoids failures caused by multi-system clock errors. Due to the use of independent transmission modules, when a failure occurs, it can judge which channel according to the failure phenomenon and error factors If a problem occurs, replace the corresponding signal processing module, which can shorten the maintenance time and ensure the acquisition of data.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model, and its purpose is to allow those familiar with this technology to understand the content of the present utility model and implement it accordingly, and cannot limit the protection scope of the present utility model. Equivalent changes or modifications made according to the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims (5)

1. nuclear power plant's weather station data acquisition system (DAS), it is characterized in that: it comprises and is separately positioned on the sensor that each layer of iron tower is used to measure the wind-warm syndrome key element, the sensor that is used to measure each meteorological element of ground on the ground is set, the signal processing module that is complementary and is connected with described each sensor, with each signal processing module built-in industrial control machine of connecting of bus communication mutually, form independently transmission channel between each signal processing module and the built-in industrial control machine, described built-in industrial control machine is used to receive and handle the data that each signal processing module sends and stores and show.

2. nuclear power plant according to claim 1 weather station data acquisition system (DAS), it is characterized in that: each meteorological element of described ground comprises ground air temperature, surface temperature, humidity, air pressure, built-up radiation, net radiation, rainfall, and above-mentioned each meteorological element is respectively by a sensor acquisition.

3. nuclear power plant according to claim 1 weather station data acquisition system (DAS) is characterized in that: described each signal processing module receives the output signal of respective sensor, and the transmission signals that standard is nursed one's health in signal shaping is sent to built-in industrial control machine.

4. nuclear power plant according to claim 1 weather station data acquisition system (DAS) is characterized in that: described built-in industrial control machine also is built-in with the GPRS module that is used for data are carried out remote transmission.

5. according to arbitrary described nuclear power plant weather station data acquisition system (DAS) among the claim 1-4, it is characterized in that: it also comprises the power module that is used to described each sensor, signal processing module and built-in industrial control machine that operating voltage is provided.

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