CN202929220U - Meteorological parameter measuring instrument for iron tower based on RFID - Google Patents

Abstract

Disclosed in the utility model is an RFID-based iron tower meteorological parameter measuring instrument. Three to six measuring layers with different heights are arranged; an air velocity transducer, a wind transducer and a temperature sensor are arranged on each of the measuring layers. And a master control system is also arranged. Besides, the measuring instrument is characterized in that a microcontroller is arranged on each of the measuring layers; an RFID module connected with the microcontroller of the measuring layer is also arranged on each of the measuring layers; a second RFID module connected with a control module is arranged in the master control system and is matched with and in wireless communication connection with the RFID modules of all the measuring layers. According to the utility model, on the basis of the arrangement of the RFID modules and the second RFID module, wireless communication between the measuring layers and the master control system can be realized and there is no need for transmission line laying, thereby reducing the cost of the system realization. Meanwhile, due to the wireless transmission, a certain distance between the control room and the iron tower is allowed to exist, so that the laying and arrangement can be carried out conveniently.

Description

Meteorological parameter measuring instrument for iron tower based on RFID

technical field

The utility model relates to a meteorological parameter measuring device for iron towers, in particular to an RFID-based meteorological parameter measuring instrument for iron towers, which is mainly used for the research of atmospheric diffusion experiments.

Background technique

In the atmospheric diffusion experiment to study the law of environmental atmospheric migration, wind speed, wind direction, and temperature are three meteorological parameters that must be measured. Linear and vertical temperature gradients are very important for determining the thermal stability of the atmosphere, understanding the spatial distribution and temporal changes of the temperature field, finding out the temperature inversion that inhibits the dilution and diffusion of pollutants, and correctly evaluating the level of potential pollutants in the area. Significance.

The existing iron tower meteorological parameter measuring instruments all transmit the signals output by the wind speed, wind direction and temperature sensors at different heights on the iron tower to the measuring instruments in the control room for sampling and measurement through cables. Due to the limited transmission distance of wired signals, the iron tower The distance from the control room should not be too far, so that the site selection for installing the iron tower is greatly restricted; the meteorological parameter measurement of the iron tower adopts wired signal transmission and requires strict lightning protection measures, which will greatly increase the complexity and cost of the transmission circuit; Meteorological parameter measurement of iron tower needs to measure wind speed, wind direction, and temperature values at the 1st to 6th floors within a height range of 100 meters at the same time. Using wired signal transmission requires multiple multi-core cables, which also greatly increases the cost of the entire system.

Contents of the invention

The purpose of the invention of the present utility model is to provide an RFID-based iron tower meteorological parameter measuring instrument to overcome the above-mentioned shortcomings brought about by wired signal transmission in the prior art.

In order to achieve the purpose of the above invention, the technical solution adopted by the utility model is: an RFID-based iron tower meteorological parameter measuring instrument, 3 to 6 measurement layers of different heights are set within the height range from the ground where the iron tower is located to its top, each The measurement layer is equipped with wind speed, wind direction, and temperature sensors respectively; a main control system is provided, and the main control system includes a control module, a storage module and an input and output module; each measurement layer is provided with a microcontroller, and the measurement layer The signals output by the wind speed, wind direction, and temperature sensors are connected to the microcontroller; each measurement layer is provided with an RFID module connected to the microcontroller of the measurement layer; the main control system is provided with a second RFID module, the second RFID module is connected to the control module in the main control system, and the second RFID module matches the wireless communication connection with the RFID module in each measurement layer.

In the above technical solution, the main control system is placed in a control room, and the distance between the control room and the iron tower is smaller than the effective communication distance of RFID.

The input module in the main control system includes an operation keyboard, and the output module includes an LED display, a parallel interface and an RS232C serial interface.

In the above technical solution, each measurement layer is provided with a microcontroller, which samples the signals output by the wind speed, wind direction, and temperature sensors at this height and calculates the corresponding wind speed, wind direction, and temperature values. The RFID on the measurement layer The module is connected with the microcontroller, and the wind speed, wind direction, and temperature values of the floor are sent out by wireless signals. The main control system is placed in the control room within a certain range from the iron tower. The second RFID module of the main control system is used to receive the wind speed, wind direction and temperature value sent by the RFID module of each measurement layer; the received wind speed, wind direction and temperature value It is sent to the storage module for storage, and the measured value of one layer is sent to the LED display for display. The operation keyboard is used to set the working parameters and working mode of the system, select the displayed measurement layer and other operations; the parallel interface can directly drive the printer Print the measurement data; the serial interface can communicate with the microcomputer to send the measurement data to the microcomputer for storage and processing.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art:

1. The utility model realizes the wireless communication between the measurement layer and the main control system by setting the RFID module and the second RFID module, without laying transmission lines, which reduces the cost of system realization; at the same time, due to the wireless transmission, the control room and the iron tower can be There is a certain distance, which is convenient for layout setting.

2. The main control module can directly drive the printer to print the measurement data through the parallel interface; if you choose to configure the computer, the measurement data can be transmitted to the computer through the serial interface for storage, which is convenient for further processing of the data by other software.

Description of drawings

Fig. 1 is a structural block diagram of Embodiment 1 of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment one: a kind of RFID-based iron tower meteorological parameter measuring instrument, referring to shown in Fig. 1, sensor is installed on the iron tower in the field, a group of three sensors of wind speed, wind direction, temperature, is installed in a certain level of iron tower for Meteorological parameters at this height are measured; different sensor groups are installed at different heights of the tower to measure meteorological parameters at different heights; in actual measurement, 3 to 6 sensor groups are configured according to the required height layers. The main control system includes a control module, a storage module, an input and output module and a second RFID module.

The wind speed and wind direction sensors are EL15-1 cup-type wind speed sensor and EL15-2 wind direction sensor produced by Tianjin Ocean Instrument Factory; s, the maximum wind resistance is 70m/s; the wind direction sensor divides 360° into 16 directions, with a resolution of 2.5° and an accuracy of ±5°. There are heating devices inside the wind speed and wind direction sensors, which can ensure normal work in winter in alpine regions.

The temperature sensor adopts a quartz crystal temperature sensor with a measuring range of -30°C to +50°C, a resolution of ±0.01°C, and an accuracy of ≤±0.15°C.

The microcontroller and RFID module on each measurement layer adopts the microcontroller CC2530F32 with built-in RF wireless transceiver of TI Company of the United States, so that the functions of the two parts can be completed by one chip, which reduces the cost and reduces the size of the circuit. area, improving the reliability of the circuit.

The microprocessor of the main control module adopts MCS-51 series 8-bit microprocessor AT89C55, which contains 20K bytes of Flash program memory; externally expands 16K bytes of data memory with power-down protection function, and the data memory cyclically stores measurement data. The measurement data of the last 24 hours can be saved.

The LED display consists of 16 LED digital tubes, 10 of which are used to display the instantaneous measurement values of wind direction, wind speed and temperature at a certain altitude, and the other 6 are used to display real-time digital clocks.

The keyboard adopts membrane keys and has 12 keys, including 10 number keys, 1 enter key, and 1 shift key; shift + number keys (press the shift and number keys at the same time) can form 10 function keys ; Except for the shift key, when other keys are pressed, there will be sound prompts; the keyboard adopts the interrupt method, so that the microprocessor can respond in time and perform corresponding operations.

The serial interface adopts the RS232C standard, and the main component is the MAX232 integrated circuit chip, which can realize the RS232C level conversion and transceiver functions with a single +5V power supply, and the circuit implementation is simple and convenient. The parallel interface is a standard parallel printer interface, which can be connected to a parallel interface printer to print measurement data.

In order to enable the measuring instrument to measure continuously and uninterruptedly for a long time, the system should be equipped with UPS power supply. When the backup power supply is used, in order to save energy consumption, the LED display can be turned off separately.

Claims (3)

1. iron tower meteorologic parameter measuring instrument based on RFID arranges the measurement layer of 3 to 6 differing heights in from the ground at steel tower place to its overhead height scope, and each is measured on layer and is respectively equipped with wind speed, wind direction, temperature sensor; Be provided with master control system, described master control system comprises control module, memory module and input/output module; It is characterized in that: each is measured layer and is provided with a microcontroller, and the signal of the wind speed of this measurement layer, wind direction, temperature sensor output is connected to described microcontroller; Each is measured layer and is provided with a RFID module that is connected with the microcontroller of this measurement layer; Be provided with the 2nd RFID module in described master control system, the 2nd RFID module is connected with control module in master control system, and described the 2nd RFID module is connected with each RFID module coupling radio communication of measuring in layer.

2. the iron tower meteorologic parameter measuring instrument based on RFID according to claim 1, it is characterized in that: described master control system is placed in the pulpit, and the distance of described pulpit and steel tower is less than the effective communication distance of RFID.

3. the iron tower meteorologic parameter measuring instrument based on RFID according to claim 1, it is characterized in that: the load module in described master control system comprises operation keyboard, output module comprises light-emitting diode display, parallel interface and RS232C serial line interface.