CN112198336A - Measuring method of anemometer - Google Patents
Measuring method of anemometer Download PDFInfo
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- CN112198336A CN112198336A CN202010599260.0A CN202010599260A CN112198336A CN 112198336 A CN112198336 A CN 112198336A CN 202010599260 A CN202010599260 A CN 202010599260A CN 112198336 A CN112198336 A CN 112198336A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
- G01P5/245—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by measuring transit time of acoustical waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
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- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Measuring Fluid Pressure (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The invention provides a method for measuring wind speed by using the time difference of ultrasonic wave propagation in air, which is used for measuring the wind speed in a tunnel, has the measuring range of average wind speed on a propagation line between two sides of the tunnel, is more accurate in measurement, and converts working condition wind volume into standard wind volume by using temperature, humidity and air pressure. The method specifically comprises the following steps: 1) two ultrasonic transducers A, B are respectively arranged at two sides of the roadway and aligned; 2) the ultrasonic transducers A, B transmit and receive each other, the ultrasonic transducer A, B sends ultrasonic waves and receives the ultrasonic waves sent by the other party, and then sends and receives signals to the wind speed instrument transmitting and receiving switching circuit; 3) the transmitting and receiving switching circuit of the anemoscope transmits the ultrasonic signals to the receiving signal processing circuit, and the receiving signals are processed and then sent to the DSP signal processor circuit.
Description
Technical Field
The invention relates to the field of coal mine equipment, in particular to a method for measuring wind speed and wind volume by using time difference of ultrasonic wave transmitted in air.
Background
The traditional mining wind speed measuring instruments comprise a mining wind sensor, a mining bidirectional wind speed sensor, a mining wind direction sensor, a mining shrinkage pipe wind speed sensor, a mining bidirectional wind speed sensor and the like, the principles of the traditional mining wind speed measuring instruments are respectively ultrasonic vortex, ultrasonic, mechanical, pressure type and pressure type pitot tubes, the measuring method of the traditional mining wind speed measuring instruments is used for measuring the wind speed of a certain point on a section, the measured wind speed is difficult to represent, and the obtained wind speed is not accurate enough.
Disclosure of Invention
In view of the technical deficiencies, the invention aims to provide a method for measuring an anemoscope, which is an in-tunnel wind speed measuring method for measuring wind speed by using the time difference of ultrasonic wave propagation in air, wherein the measuring range is the average wind speed on a propagation path between two sides, the measurement is more accurate, and the temperature, humidity and air pressure are used for converting the working condition wind volume into the standard wind volume.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for measuring an anemometer is characterized in that the average wind speed of a roadway is measured by an ultrasonic time difference method, and the average wind speed and standard working condition wind volume data are obtained by calculation and correction by utilizing the shape parameters of the roadway and temperature, humidity and air pressure data, and specifically comprises the following steps:
1) two ultrasonic transducers A, B are respectively arranged at two sides of the roadway, form an included angle with the axial line of the roadway and are aligned with each other;
2) the ultrasonic transducers A, B are used for receiving and transmitting each other, the ultrasonic transducer A, B sends out ultrasonic waves and receives the ultrasonic waves sent by the other party, and the received signals are returned to the anemograph transmitting and receiving switching circuit through a special cable;
3) the anemoscope transmitting and receiving switching circuit transmits the ultrasonic signals to the received signal processing circuit, and the received ultrasonic signals are amplified, frequency-selected, amplitude-limited and shaped by the received signal processing circuit and then sent to the DSP signal processor circuit;
4) the DSP signal processor circuit carries out digital sampling filtering and other processing according to the received analog signal to obtain the amplitude value and the ultrasonic time of the signal, and controls the amplification factor of the received signal processing circuit and the transmitting voltage of the transmitting voltage adjusting circuit by using the amplitude value to carry out signal amplitude adjustment; meanwhile, the DSP signal processor circuit sends the qualified data result to the data processor circuit;
5) the data processor circuit performs data processing according to a predetermined functional relationship
Calculating to obtain the current wind speed, wherein L is an ultrasonic path, namely a measurement distance, alpha is an included angle between a sound wave direction and a wind direction, V is the wind speed, tab is the time from the ultrasonic wave sent by the ultrasonic transducer A to the ultrasonic wave received by the ultrasonic transducer B, tba is the time from the ultrasonic wave sent by the ultrasonic transducer B to the ultrasonic wave received by the ultrasonic transducer A, the data processor transmits the specific processed wind speed to the LCD, and the specific processed wind speed is converted into the standard working condition wind volume according to the tunnel parameters input by the key circuit and the communication circuit and the parameters measured by the air pressure, temperature and humidity sensors;
6) and finally, the communication circuit transmits the wind speed and the standard working condition wind quantity to the ground directly or through other communication substations in an RS485 signal mode.
The invention has the beneficial effects that: 1. the measurement range of the measurement mode is the average wind speed on the propagation path between the two sides of the roadway, compared with the traditional measurement method, the measurement precision is higher, the measurement range is larger, and the wind volume under the standard working condition can be obtained through correction of air pressure, temperature and humidity.
2. The wind speed and the wind volume are measured at a large distance, and the method can be used for monitoring the wind flow speed in a roadway with a large width.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a measurement method of an anemometer according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a measurement method of an anemometer specifically includes the following steps:
1) two ultrasonic transducers A, B are respectively arranged at two sides of the roadway and form an included angle with the axial line of the roadway (for example: 45 deg., and aligned with each other;
2) the ultrasonic transducers A, B are used for receiving and transmitting each other, the ultrasonic transducer A, B sends out ultrasonic waves and receives the ultrasonic waves sent by the other party, and the received signals are returned to the anemograph transmitting and receiving switching circuit through a special cable;
3) the anemoscope transmitting and receiving switching circuit transmits the ultrasonic signals to the received signal processing circuit, and the received ultrasonic signals are amplified, frequency-selected, amplitude-limited and shaped by the received signal processing circuit and then sent to the DSP signal processor circuit;
4) the DSP signal processor circuit carries out software processing such as digital filtering and the like according to the received analog signal to obtain the amplitude and the ultrasonic time of the signal, and controls the amplification factor of the received signal processing circuit and the transmitting voltage of the transmitting voltage adjusting circuit by using the amplitude to carry out signal amplitude adjustment; meanwhile, the DSP signal processor circuit sends the qualified data result to the data processor circuit;
5) the data processor circuit performs data processing according to a predetermined functional relationship
Calculating to obtain the current wind speed, wherein L is an ultrasonic path, namely a measured distance, alpha is an included angle between a sound wave direction and a wind direction, V is the wind speed, tab is the time from the ultrasonic wave sent by the ultrasonic transducer A to the ultrasonic wave received by the ultrasonic transducer B, tba is the time from the ultrasonic wave sent by the ultrasonic transducer B to the ultrasonic wave received by the ultrasonic transducer A, and the data processor is used for processing the specific processed wind speedThe wind speed is transmitted to the LCD display, and is converted into standard working condition wind volume according to the tunnel parameters input by the key circuit and the communication circuit and the parameters measured by the air pressure, temperature and humidity sensors;
6) and finally, the communication circuit transmits the wind speed and the standard working condition wind quantity to the ground directly or through other communication substations in an RS485 signal mode.
The use environment of the measuring method is as follows: a) the environmental temperature is 0-40 ℃; b) the relative humidity is less than 98 percent; c) the atmospheric pressure is 80-110 kPa; d) there is a risk of gas or coal dust explosion, but no significant vibration and shock, no corrosive gas to destroy insulation.
The design measurement range of the invention is the average wind speed on the transmission line between the two sides of the roadway, compared with the traditional measurement method, the measurement precision is higher, and the wind volume under the standard working condition can be obtained through the correction of the air pressure, the temperature and the humidity; the measuring method realizes measurement of wind speed and wind volume in a large distance, and can be used for monitoring the wind flow speed in a tunnel with a large width.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (1)
1. A method for measuring an anemometer is characterized in that the average wind speed of a roadway is measured by an ultrasonic time difference method, and standard working condition wind volume data is obtained by calculation and correction by utilizing roadway shape parameters and temperature, humidity and air pressure data, and specifically comprises the following steps:
1) two ultrasonic transducers A, B are respectively arranged at two sides of the roadway, form an included angle with the axial line of the roadway and are aligned with each other;
2) the ultrasonic transducers A, B are used for receiving and transmitting each other, the ultrasonic transducer A, B sends out ultrasonic waves and receives the ultrasonic waves sent by the other party, and the received signals are returned to the anemograph transmitting and receiving switching circuit through a special cable;
3) the anemoscope transmitting and receiving switching circuit transmits the ultrasonic signals to the received signal processing circuit, and the received ultrasonic signals are amplified, frequency-selected, amplitude-limited and shaped by the received signal processing circuit and then sent to the DSP signal processor circuit;
4) the DSP signal processor circuit carries out digital sampling filtering and other processing according to the received analog signal to obtain the amplitude value and the ultrasonic time of the signal, and controls the amplification factor of the received signal processing circuit and the transmitting voltage of the transmitting voltage adjusting circuit by using the amplitude value to carry out signal amplitude adjustment; meanwhile, the DSP circuit transmits the qualified data result to the data processor circuit;
5) the data processor circuit performs data processing according to a predetermined functional relationship
Calculating to obtain the current wind speed, wherein L is an ultrasonic path, namely a measurement distance, alpha is an included angle between a sound wave direction and a wind direction, V is the wind speed, tab is the time from the ultrasonic wave sent by the ultrasonic transducer A to the ultrasonic wave received by the ultrasonic transducer B, tba is the time from the ultrasonic wave sent by the ultrasonic transducer B to the ultrasonic wave received by the ultrasonic transducer A, the data processor transmits the specific processed wind speed to the LCD, and the specific processed wind speed is converted into the standard working condition wind volume according to the tunnel parameters input by the key circuit and the communication circuit and the parameters measured by the air pressure, temperature and humidity sensors;
6) and finally, the communication circuit transmits the wind speed and the standard working condition wind quantity to the ground directly or through other communication substations in an RS485 signal mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010599260.0A CN112198336A (en) | 2020-06-28 | 2020-06-28 | Measuring method of anemometer |
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| CN202010599260.0A CN112198336A (en) | 2020-06-28 | 2020-06-28 | Measuring method of anemometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447671A (en) * | 2021-07-15 | 2021-09-28 | 中煤科工集团重庆研究院有限公司 | Roadway section wind speed detection method based on high-frequency and low-frequency ultrasonic waves |
| CN114459552A (en) * | 2022-01-26 | 2022-05-10 | 江苏大系舟科技有限公司 | Air quantity measuring sensor and air quantity measuring method for coal roadway |
| CN116557032A (en) * | 2023-05-24 | 2023-08-08 | 北京龙软科技股份有限公司 | Mine roadway section wind speed monitoring device and section wind speed monitoring method |
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| CN108776236A (en) * | 2018-03-30 | 2018-11-09 | 西安科技大学 | A kind of coal mine roadway sectional wind velocity measuring instrument and its measurement method |
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2020
- 2020-06-28 CN CN202010599260.0A patent/CN112198336A/en active Pending
Patent Citations (4)
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| CN103018482A (en) * | 2012-12-07 | 2013-04-03 | 辽宁工程技术大学 | Device and method for detecting mining intelligent roadway based on wind speed time difference |
| US20180010943A1 (en) * | 2015-03-24 | 2018-01-11 | Hefei University Of Technology | Ultrasonic gas flow meter based on fpga and dsp |
| CN107942092A (en) * | 2017-12-01 | 2018-04-20 | 山东科技大学 | Low wind speed measuring device and method in mine laneway large span |
| CN108776236A (en) * | 2018-03-30 | 2018-11-09 | 西安科技大学 | A kind of coal mine roadway sectional wind velocity measuring instrument and its measurement method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447671A (en) * | 2021-07-15 | 2021-09-28 | 中煤科工集团重庆研究院有限公司 | Roadway section wind speed detection method based on high-frequency and low-frequency ultrasonic waves |
| CN114459552A (en) * | 2022-01-26 | 2022-05-10 | 江苏大系舟科技有限公司 | Air quantity measuring sensor and air quantity measuring method for coal roadway |
| CN116557032A (en) * | 2023-05-24 | 2023-08-08 | 北京龙软科技股份有限公司 | Mine roadway section wind speed monitoring device and section wind speed monitoring method |
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Address after: Room 201, No. 32, Chuanghui Road, New Industrial Park, High-tech Zone, Xi'an City, Shaanxi Province 710119 Applicant after: Xi'an Tianmu Instrument Co.,Ltd. Address before: Room 201, 32 Chuanghui Road, new industrial park, block 17, Wanshou Middle Road, Xincheng District, Xi'an City, Shaanxi Province, 710119 Applicant before: Xi'an Tianmu Instrument Co.,Ltd. |
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Address after: No. C, 9th Floor, Jingshang Production Building, No. 32, Chuanghui Road, New Industrial Park, High-tech Zone, Xi'an City, Shaanxi Province 710119 Applicant after: Xi'an Tianmu Instrument Co.,Ltd. Address before: Room 201, No. 32, Chuanghui Road, New Industrial Park, High-tech Zone, Xi'an City, Shaanxi Province 710119 Applicant before: Xi'an Tianmu Instrument Co.,Ltd. |
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