CN116164793A - Wind powder measurement system based on charge induction principle - Google Patents
Wind powder measurement system based on charge induction principle Download PDFInfo
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- CN116164793A CN116164793A CN202310020515.7A CN202310020515A CN116164793A CN 116164793 A CN116164793 A CN 116164793A CN 202310020515 A CN202310020515 A CN 202310020515A CN 116164793 A CN116164793 A CN 116164793A
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- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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Abstract
The invention relates to the technical field of wind powder measurement, in particular to a wind powder measurement system based on a charge induction principle, which comprises a wind powder characteristic parameter acquisition module, a charge induction module, a data acquisition module, a wireless transmission module and a terminal processing module. And directly acquiring the speed and concentration data of the wind powder through the service terminal.
Description
Technical Field
The invention relates to the technical field of wind powder measurement, in particular to a wind powder measurement system based on a charge induction principle.
Background
On-line monitoring of the speed and concentration of primary air coal dust of a boiler of a thermal power plant is a difficult problem which cannot be well solved for a long time. The flow velocity and the concentration of the pulverized coal are accurately measured and monitored, and the method has important significance and value for realizing the on-line leveling of the boiler pulverized coal and improving the economical efficiency and the safety of the boiler operation. Due to friction between the pulverized coal particles and the conveying air and collision between the particles and the pipeline wall, the pulverized coal can carry a certain amount of electrostatic charges. When a large number of coal powder particles pass through the metal electrode, a certain amount of induced charges are generated on the surface of the electrode, and an electrostatic signal is detected through a specially designed circuit. The random current signal sensed by the electrostatic induction electrode is firstly conditioned through links such as amplification, filtering and the like by a front-end circuit, and then the sampled digital signal is subjected to a series of processing such as correlation operation and the like in a digital signal processor, so that the characteristic parameters of the fluid can be obtained. The wind powder measuring system used at present is complicated in measuring operation and inaccurate in measuring result.
Disclosure of Invention
The invention aims to solve the technical problem of providing a wind powder measuring system based on a charge induction principle, which is simple to operate, can wirelessly transmit monitoring data to a service terminal, and can directly acquire the speed and concentration data of wind powder through the service terminal.
In order to solve the technical problems, the invention adopts the following technical scheme:
a wind-powder measuring system based on charge induction principle comprises
The wind powder characteristic parameter acquisition module is used for selecting wind powder with the same charge characteristic, enabling the wind powder to pass through coal powder pipelines with different specifications respectively, acquiring first wind powder characteristic parameters when the wind powder with the same charge characteristic passes through the coal powder pipelines with different specifications, selecting the coal powder pipelines with the same specification, inputting wind powder with different charge characteristics into the coal powder pipelines with the same specification, acquiring second wind powder characteristic parameters when the wind powder with different charge characteristics passes through the coal powder pipelines with the same specification, and combining the first wind powder characteristic parameters and the second wind powder characteristic parameters to acquire complete wind powder characteristic parameters;
the charge induction module is used for carrying out electrostatic induction on electrostatic charges carried by wind powder according to a charge induction principle, obtaining a random current signal, and carrying out filtering and amplifying treatment on the obtained random current signal;
the data acquisition module acquires the current signals subjected to filtering and amplifying treatment, acquires digital signals corresponding to the current signals, sorts the acquired digital signals, and selects the median of the digital signals acquired in unit time as a measurement standard value;
the wireless transmission module is used for wirelessly transmitting the data in a wireless data transmission mode for the acquired and tidied digital signals;
the terminal processing module selects a digital signal processor capable of being used for wind powder measurement, inputs wind powder characteristic parameters, and carries out digital signal processing on received data to obtain speed and concentration data of wind powder.
Further, the charge induction module performs electrostatic induction on electrostatic charges carried by wind powder according to a charge induction principle, and the method for acquiring random current signals adopts a charge sensor and an electrostatic induction device, and the electrostatic induction device is electrically connected with the charge sensor.
Further, the method for filtering and amplifying the obtained random current signal by the charge induction module adopts a filter circuit and a charge amplifying circuit, and the filter circuit and the charge amplifying circuit are both arranged in the electrostatic induction device.
Further, the wireless transmission module performs data transmission on the acquired and arranged digital signals in a wireless data transmission mode by adopting a Lora wireless transmission technology.
The invention has the beneficial effects that: when the device is in practical use, the wind powder characteristic parameter module is obtained, the wind powder speed and the concentration under different parameter environments are measured to obtain complete wind powder characteristic parameters, the wind powder characteristic parameters are input into the terminal processing module, firstly, the charge sensing module is used for carrying out electrostatic induction on electrostatic charges carried by wind powder of a coal powder pipeline, a random current signal is obtained, the obtained random current signal is subjected to filtering and amplifying treatment, then the random current signal processed by the charge sensing module is collected, a digital signal corresponding to the random current signal is obtained, the collected digital signal is arranged, the median of the digital signal obtained in unit time is selected as a measurement standard value, then the data after data collection is transmitted to the terminal processing module in a wireless mode, and the terminal processing and analysis are carried out to finally obtain the speed and the concentration parameters of the wind powder. The wind powder measuring system based on the charge induction principle is simple to operate, can wirelessly transmit monitoring data to the service terminal, and directly obtains the speed and concentration data of wind powder through the service terminal.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the invention.
As shown in FIG. 1, the wind powder measuring system based on the charge induction principle provided by the invention comprises
The wind powder characteristic parameter acquisition module is used for selecting wind powder with the same charge characteristic, enabling the wind powder to pass through coal powder pipelines with different specifications respectively, acquiring first wind powder characteristic parameters when the wind powder with the same charge characteristic passes through the coal powder pipelines with different specifications, selecting the coal powder pipelines with the same specification, inputting wind powder with different charge characteristics into the coal powder pipelines with the same specification, acquiring second wind powder characteristic parameters when the wind powder with different charge characteristics passes through the coal powder pipelines with the same specification, and combining the first wind powder characteristic parameters and the second wind powder characteristic parameters to acquire complete wind powder characteristic parameters;
the charge induction module is used for carrying out electrostatic induction on electrostatic charges carried by wind powder according to a charge induction principle, obtaining a random current signal, and carrying out filtering and amplifying treatment on the obtained random current signal;
the data acquisition module acquires the current signals subjected to filtering and amplifying treatment, acquires digital signals corresponding to the current signals, sorts the acquired digital signals, and selects the median of the digital signals acquired in unit time as a measurement standard value;
the wireless transmission module is used for wirelessly transmitting the data in a wireless data transmission mode for the acquired and tidied digital signals;
the terminal processing module selects a digital signal processor capable of being used for wind powder measurement, inputs wind powder characteristic parameters, and carries out digital signal processing on received data to obtain speed and concentration data of wind powder.
When the device is in practical use, the wind powder characteristic parameter module is obtained, the wind powder speed and the concentration under different parameter environments are measured to obtain complete wind powder characteristic parameters, the wind powder characteristic parameters are input into the terminal processing module, firstly, the charge sensing module is used for carrying out electrostatic induction on electrostatic charges carried by wind powder of a coal powder pipeline, a random current signal is obtained, the obtained random current signal is subjected to filtering and amplifying treatment, then the random current signal processed by the charge sensing module is collected, a digital signal corresponding to the random current signal is obtained, the collected digital signal is arranged, the median of the digital signal obtained in unit time is selected as a measurement standard value, then the data after data collection is transmitted to the terminal processing module in a wireless mode, and the terminal processing and analysis are carried out to finally obtain the speed and the concentration parameters of the wind powder.
The wind powder measuring system based on the charge induction principle is simple to operate, can wirelessly transmit monitoring data to the service terminal, and directly obtains the speed and concentration data of wind powder through the service terminal.
As shown in fig. 1, in this embodiment, the method for obtaining a random current signal by performing electrostatic induction on electrostatic charges carried by wind powder according to a charge induction principle by using a charge sensor and an electrostatic induction device, where the electrostatic induction device is electrically connected with the charge sensor.
As shown in fig. 1, in this embodiment, the method of filtering and amplifying the obtained random current signal by the charge sensing module adopts a filtering circuit and a charge amplifying circuit, and the filtering circuit and the charge amplifying circuit are both built in the electrostatic induction device.
As shown in fig. 1, in this embodiment, the wireless transmission module performs data transmission on the acquired and consolidated digital signal by using a wireless data transmission method, and performs data transmission by using a Lora wireless transmission technology.
All technical features in the embodiment can be freely combined according to actual needs.
The foregoing embodiments are preferred embodiments of the present invention, and other embodiments are included, without departing from the spirit of the present invention.
Claims (4)
1. Wind powder measurement system based on charge induction principle, its characterized in that: comprising
The wind powder characteristic parameter acquisition module is used for selecting wind powder with the same charge characteristic, enabling the wind powder to pass through coal powder pipelines with different specifications respectively, acquiring first wind powder characteristic parameters when the wind powder with the same charge characteristic passes through the coal powder pipelines with different specifications, selecting the coal powder pipelines with the same specification, inputting wind powder with different charge characteristics into the coal powder pipelines with the same specification, acquiring second wind powder characteristic parameters when the wind powder with different charge characteristics passes through the coal powder pipelines with the same specification, and combining the first wind powder characteristic parameters and the second wind powder characteristic parameters to acquire complete wind powder characteristic parameters;
the charge induction module is used for carrying out electrostatic induction on electrostatic charges carried by wind powder according to a charge induction principle, obtaining a random current signal, and carrying out filtering and amplifying treatment on the obtained random current signal;
the data acquisition module acquires the current signals subjected to filtering and amplifying treatment, acquires digital signals corresponding to the current signals, sorts the acquired digital signals, and selects the median of the digital signals acquired in unit time as a measurement standard value;
the wireless transmission module is used for wirelessly transmitting the data in a wireless data transmission mode for the acquired and tidied digital signals;
the terminal processing module selects a digital signal processor capable of being used for wind powder measurement, inputs wind powder characteristic parameters, and carries out digital signal processing on received data to obtain speed and concentration data of wind powder.
2. A wind powder measuring system based on the principle of charge induction according to claim 1, wherein: the charge induction module is used for carrying out electrostatic induction on electrostatic charges carried by wind powder according to a charge induction principle, and the method for acquiring random current signals adopts a charge sensor and an electrostatic induction device, and the electrostatic induction device is electrically connected with the charge sensor.
3. A wind powder measuring system based on the principle of charge induction according to claim 2, wherein: the charge induction module is used for filtering and amplifying the acquired random current signals, a filter circuit and a charge amplification circuit are adopted, and the filter circuit and the charge amplification circuit are both arranged in the electrostatic induction device.
4. A wind powder measuring system based on the principle of charge induction according to claim 1, wherein: the wireless transmission module is used for carrying out wireless transmission on the acquired and arranged digital signals in a wireless data transmission mode, and the data transmission is carried out by adopting the Lora wireless transmission technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310020515.7A CN116164793A (en) | 2023-01-06 | 2023-01-06 | Wind powder measurement system based on charge induction principle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310020515.7A CN116164793A (en) | 2023-01-06 | 2023-01-06 | Wind powder measurement system based on charge induction principle |
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| Publication Number | Publication Date |
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| CN116164793A true CN116164793A (en) | 2023-05-26 |
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| CN202310020515.7A Pending CN116164793A (en) | 2023-01-06 | 2023-01-06 | Wind powder measurement system based on charge induction principle |
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| CN (1) | CN116164793A (en) |
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2023
- 2023-01-06 CN CN202310020515.7A patent/CN116164793A/en active Pending
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