Wireless electromagnetic current meter
A flow meter and radio technology, applied in fluid velocity measurement, instrument, velocity/acceleration/shock measurement, etc., can solve the problems of poor anti-interference ability, high data error rate, increase data error probability, etc. The effect of high measurement accuracy and simple and convenient operation
Inactive Publication Date: 2016-01-13
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +2
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Problems solved by technology
There are many deficiencies in the use of these wired electromagnetic current meters: 1. If there are many flow rate collection points, multiple current meters are needed, which requires a lot of transmission cables; 2. When the transmission distance is relatively long, the signal attenuation is serious. The data error rate is relatively high. To ensure the validity of the data, it is necessary to add auxiliary equipment to effectively amplify the signal; 3. The flexibility of the wired electromagnetic flow meter is poor. If the measurement position needs to be changed, it needs to be re-wired; There are high electromagnetic interference devices such as motors working next to the transmission cable of the electromagnetic current meter, which will increase the probability of data error; 5. The cost is high, and the price of the transmission cable is relatively expensive. If the transmission distance is long, it is necessary to increase the relay signal processing equipment. generally more expensive
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Embodiment
[0021] An embodiment of the present invention provides a wireless electromagnetic current meter, such as figure 1 As shown, it mainly includes: electromagnetic current meter, signal processing module, microcontroller module and wireless data transceiver module. in:
[0022] The electromagnetic flowmeter is used to convert the liquid flow velocity data into a voltage signal and output it to the signal processing module.
[0023] Electromagnetic flow meters use electromagnetic principles to measure point flow velocities. The electromagnetic current meter is set in water and generates an artificial magnetic field in the water. The water flow through this magnetic field is equivalent to the electric conductor cutting the magnetic force line, which will generate induced electromotive force on both sides of the water flow. The average velocity of the water flow can be calculated after measuring this electromotive force. The electromagnetic flow meter has no moving parts and is no...
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The invention discloses a wireless electromagnetic current meter, comprising: an electromagnetic current meter, used for converting liquid flow rate data into voltage signals; a signal processing module, used for converting negative voltage signals in the voltage signals into positive voltage signals, performing amplification and filter shaping, and converting the voltage signals into digital signals; a microcontroller module, used for controlling parameters used in the signal processing process of the signal processing module, and formatting the digital signals output by the signal processing module according to a communication protocol; and a wireless data transceiver module, used for wirelessly transmitting the formatted digital signals to the outside, and forwarding the parameter data transmitted by the outside and used in the signal processing process to the microcontroller module. The wireless electromagnetic current meter transmits data in a wireless mode so as to save early fussy wiring process and reduce the cost, and has high measurement precision.
Description
technical field [0001] The invention relates to the field of wireless communication technology and measurement technology, in particular to a wireless electromagnetic current meter. Background technique [0002] Velocity measurement is an indispensable part of the model test. The main types of existing flowmeters are divided into rotor type flowmeters, acoustic point flowmeters, electric wave flowmeters, electromagnetic point flowmeters, and optical flowmeters. Electromagnetic flowmeters are due to installation The advantages of simplicity, high precision, and ability to measure two-dimensional flow velocity have been widely used. [0003] At present, the electromagnetic flowmeters used in most models are wired flowmeters, and the flow velocity data collected by the flowmeters are transmitted to the data processing center or repeater through communication cables. There are many deficiencies in the use of these wired electromagnetic current meters: 1. If there are many flow ...
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IPC IPC(8): G01P5/00
Inventor 郭庆超刘尧成耿雷董先勇陆琴刘飞李慧梅邓安军史红玲陈翠华祁伟吉祖稳王党伟董占地胡海华
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES