CN101382562B - Seven-degree of freedom flow speed measurement method with common adaptability - Google Patents
Seven-degree of freedom flow speed measurement method with common adaptability Download PDFInfo
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- CN101382562B CN101382562B CN2008102014249A CN200810201424A CN101382562B CN 101382562 B CN101382562 B CN 101382562B CN 2008102014249 A CN2008102014249 A CN 2008102014249A CN 200810201424 A CN200810201424 A CN 200810201424A CN 101382562 B CN101382562 B CN 101382562B
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Abstract
The invention belongs to the technical field of methods for measuring the flow rate of fluid such as air, liquid and the like in a multi-space way. The flow rate measuring method with seven freedom degrees and universal adaptability comprises the steps: six single-dimensional flow rate sensors are installed on a flow rate sensor substrate and then respectively connected with a measurement signal processing module so as to be used for transforming the signals of the six sensors into digital signals, finally a flow rate signal synthesis processing module is used for being connected with the six measurement signal processing modules and used for receiving the flow rate signals from six directions, then the calculation of composition algorithm is carried out so as to obtain the flow rate vector information including the parameters of direction, magnitude and time of the flow rate, and finally the flow rate information is displayed on a displayer. Compared with the use of the existing flow rate measurement sensor, the flow rate measuring method can be embedded into any object and adapt to all measured objects, thus being widely applicable to the fields of wind power generation, meteorology, automobiles, aircraft, aerodynamics, thermal measurement, hydromechanics and the like.
Description
Technical field
The invention belongs to flow rate of fluid method and technology fields such as many space measurements gas, liquid.
Background technology
At present, multivariant flow speed measurement sensor and surveying instrument have: multispectral ultrasonic current metre, multi-thread hot-wire anemometer, laser velocimeter etc., these fluid-velocity survey instrument characteristics: 1, mainly as standard measuring instruments usefulness, cost an arm and a leg of reining in; 2, the user of service is had higher requirement, want as multi-thread hot-wire anemometer on the special-purpose coordinate axis of hot-wire transducer installation, design coordinate axis and adjustment coordinate axis need very professional personnel; 3, measured object is had requirement, as the multispectral not flow velocity of energy measurement pure water of ultrasonic current metre of reining in, laser velocimeter requires to have trace particle etc.; 4, can not generally use as general sensor,, be embedded in the measuring system of any object as connecting to form cheapness, easy-to-use measuring system with any circuit, or the like.Seven freedom flow-speed measurement method provided by the invention can overcome above-mentioned shortcoming.
Summary of the invention
Purpose of the present invention is exactly to overcome the problems referred to above that the prior art measurement flow rate exists, and a kind of general adaptive seven freedom flow-speed measurement method that has is provided, and is used for flow rate of fluid information such as multi-faceted measurement gas, liquid.
For achieving the above object, the concrete technical scheme taked of the present invention is as follows:
A kind of have a general adaptive seven freedom flow-speed measurement method, this method is that six one dimensional flow speed sensors are installed on the flow sensor pedestal, connecting a measuring-signal processing module then separately is used for the conversion of signals of six sensors is become digital signal, at last with the synthetic processing module of a flow velocity signal, be connected with six measuring-signal processing modules, be used to receive the flow velocity signal of six direction, through obtaining the Vector Message of flow velocity after the composition algorithm calculating, the direction that comprises flow velocity, size, time parameter finally demonstrates flow rate information on LCD or light-emitting diode display.
Above-mentioned seven freedom is meant six orientation, space and 1 time scale; Six one dimensional flow speed sensors are installed on six different orientation in the sensor base, are used to measure the flow velocity of six direction; LCD or light-emitting diode display are installed on the synthetic processing module of flow velocity signal, are used to show flow rate information.
The six direction flow velocity of sensor base is a reference frame with space 3 axis coordinate systems, is respectively: the v of+X-direction
X+(t) ,-v of X-direction
X-(t) ,+v of Y direction
Y+(t) ,-v of Y direction
Y-(t) ,+v of Z-direction
Z+(t) ,-v of Z-direction
Z-(t); The flow sensor of six one dimensions is installed on the six direction of sensor base, the flow rate information in six orientation of perception.
The one dimensional flow speed sensors can be the sensor that adopts various energy conversion principle to produce, as turbine flow transducer, and hotting mask flow sensor, hot wire flow transducer, ultrasonic flow sensor, laser flow transducer etc.
Six flow sensors are connected with six measuring-signal processing modules respectively, each sensor measurement signal processing module has one-chip computer and RS485 communication interface, conveniently is connected communication with the synthetic processing module of the flow velocity signal that has one-chip computer and RS485 communication interface; Simultaneously, the synthetic processing module of flow velocity signal has the synchronous communication circuit, can order six sensor synchro measures, finishes the three-dimensional synchro measure to flow velocity signal.The synthetic processing module of flow velocity signal also has the synthetic Processing Algorithm of flow velocity signal, six direction flow velocity signal and one dimension time signal can be synthesized a velocity vector signal that comprises these components.
On the other hand, the synthetic processing module portable of flow velocity signal is to PC computing machine or notebook computer, finished or notebook computer is finished the synthetic processing of flow velocity signal by the PC computing machine; On PC computing machine or the notebook computer special software is arranged, can finish functions such as graphic presentation as flow velocity signal, report display, data deposit, printing; PC computing machine or notebook computer were finished with being connected by the RS485 interface board of sensor signal processing module.
Beneficial effect of the present invention: of the present invention have a general adaptive seven freedom flow-speed measurement method, be a kind of based on basic flow speed measurement sensor, on space structure and time scale, be reconstructed, a kind of new flow-speed measurement method that produces has the irreplaceable physical measurement advantage of general sensor.Use with existing multidimensional flow speed measurement sensor and to compare, have cheaply, can be embedded into any object,, can select different pedestal sensors, adapt to advantages such as all measuring objects at different objects.Can be widely used in fields such as wind-power electricity generation, meteorology, automobile, aircraft, aerodynamics, thermal measurement, fluid mechanics.
Description of drawings
Fig. 1 is the application structure synoptic diagram during general adaptive seven freedom flow-speed measurement method embodiment for the present invention has.
The sensor signal processing module structural representation of Fig. 2 when general adaptive seven freedom flow-speed measurement method is specifically used for the present invention has.
Working sensor principle schematic during Fig. 3 uses for the present invention has general adaptive seven freedom flow-speed measurement method is concrete.
Flow sensor and PC computing machine catenation principle synoptic diagram during Fig. 4 uses for the present invention has general adaptive seven freedom flow-speed measurement method is concrete.
Embodiment
Further specify the present invention below in conjunction with drawings and Examples.
As shown in Figure 1, according to method design of the present invention, six one dimensional flow speed sensors are installed on the flow sensor pedestal, and are distributed in different directions; Connecting a measuring-signal processing module then separately is used for the conversion of signals of six sensors is become digital signal; At last with the synthetic processing module of a flow velocity signal, be connected with six measuring-signal processing modules, be used to receive the flow velocity signal of six direction, through obtaining the Vector Message of flow velocity after the composition algorithm calculating, comprise direction, size, the time parameter of flow velocity, finally on LCD or light-emitting diode display, demonstrate flow rate information.
The fluid velocity of the flow sensor measures six direction of these six one dimensions, in a certain direction, fluid may impact this direction sensor with different angles, but this sensor is the fluid velocity vertical with it.Among Fig. 11 be+Y-axis 2 flow sensors, and 2 are-the Y-axis flow sensor, and 3 are+the X-axis flow sensor, and 4 are-the X-axis flow sensor, and 5 are-Z axial flow speed sensors, and 6 are+Z axial flow speed sensors.
As shown in Figure 2, six flow sensors are connected with sensor measurement signal processing module 8, sensor measurement signal processing module 9, sensor measurement signal processing module 10, sensor measurement signal processing module 11, sensor measurement signal processing module 12, sensor measurement signal processing module 13 respectively, the sensor measurement signal processing module is responsible for finishing the measurement and the digitizing of flow velocity signal, each all has synchronizing circuit, one-chip computer and RS485 communication interface, is connected by the synthetic processing module 14 of RS485 interface and flow velocity signal.The synthetic processing module 14 of flow velocity signal is handled mould to six sensor measurement signals and is sent measuring command, and six sensors begin synchro measure.The synthetic processing module 14 of flow velocity signal is handled mould to six sensor measurement signals again and is sent the order of transmission measurement result, and it receives six flow velocity signals, calculates by the velocity vector composition algorithm, obtains the vector signal of flow velocity, finishes one-shot measurement.N time so repeatedly, obtain one group of time series flow velocity signal, flow velocity and time relation are included in the time serial message.Flow rate information is presented on LCD or the light-emitting diode display 15.
As shown in Figure 3, fluid press arrow 20 direction impingement flow speed sensors 16, because the effect of the cavity 19 of fixation of sensor, make and have only flow velocity to act on the sensor with sensor 16 vertical direction, sensor converts flow velocity signal to electric signal and passes by lead 17, and lead 18 is signal wires of control sensor 16 work.
As shown in Figure 4 ,+X-direction fluid detects by the flow sensor of this direction, converts digital signal to through signal processing module, passes to the PC computing machine by the RS485 interface module;-X-direction fluid detects by the flow sensor of this direction, converts digital signal to through signal processing module, passes to the PC computing machine by the RS485 interface module; + Y direction fluid detects by the flow sensor of this direction, converts digital signal to through signal processing module, passes to the PC computing machine by the RS485 interface module;-Y direction fluid detects by the flow sensor of this direction, converts digital signal to through signal processing module, passes to the PC computing machine by the RS485 interface module;-Z-direction fluid detects by the flow sensor of this direction, converts digital signal to through signal processing module, passes to the PC computing machine by the RS485 interface module; + Z-direction fluid detects by the flow sensor of this direction, converts digital signal to through signal processing module, passes to the PC computing machine by the RS485 interface module.The PC computing machine calculates the Vector Message of flow velocity according to the velocity vector composition algorithm, shows that by figure, diagrammatic form data can exist on the hard disk of computing machine, and information such as pictorial statement can print.
The content that is not described in detail in this instructions belongs to this area professional and technical personnel's known prior art.
Patent of the present invention provides has general adaptive seven freedom flow-speed measurement method, can be widely used in the fields such as wind-power electricity generation, meteorology, automobile, airborne vehicle, aerodynamics, thermal measurement, hydrodynamics. These characteristics with general adaptive seven freedom flow-speed measurement method are: consist of a new sensor by six one dimension flow velocity installation of sensors in the sensor base of a solid, be connected with corresponding measuring-signal circuit, by measuring control and algorithm, obtain the vector signal of flow velocity, comprised size and the time information of the six direction of flow velocity signal. This sensor can be made the various sizes size, adapts to measurement or the complicated measurement environment of different pipe diameters; By selecting dissimilar one dimension flow sensors can consist of the flow velocity multidimensional measure sensor that adapts to the different fluid medium; This sensor can be made various geometries and different size again with embedded microprocessor, is embedded into easily in the various measuring systems. Can also by changing the number that the one dimension flow sensor is installed, can consist of from 2 frees degree to the new sensor to 7 frees degree.
Claims (5)
1. one kind has general adaptive seven freedom flow-speed measurement method, this method is six one dimensional flow speed sensors to be arranged according to the positive negative direction of three-dimensional system of coordinate be installed on the flow sensor pedestal, six one dimensional flow speed sensors connect a measuring-signal processing module separately and are used for the conversion of signals of six sensors is become digital signal then, at last with the synthetic processing module of a flow velocity signal, be connected with six measuring-signal processing modules, be used to receive the flow velocity signal of six direction, through obtaining the Vector Message of flow velocity after the composition algorithm calculating, the direction that comprises the flow velocity of original six direction, size, time parameter finally demonstrates flow rate information on LCD or light-emitting diode display.
2. as claimed in claim 1 have a general adaptive seven freedom flow-speed measurement method, and it is characterized in that: the kind of described one dimensional flow speed sensors comprises turbine flow transducer, hotting mask flow sensor, hot wire flow transducer, ultrasonic flow sensor and laser flow transducer.
3. as claimed in claim 1 have a general adaptive seven freedom flow-speed measurement method, and it is characterized in that: each sensor measurement signal processing module all has one-chip computer and RS485 communication interface.
4. as claimed in claim 1 have a general adaptive seven freedom flow-speed measurement method, it is characterized in that: the synthetic processing module of flow velocity signal has the synchronous communication circuit, orders six sensor synchro measures, finishes the three-dimensional synchro measure to flow velocity signal.
5. as claimed in claim 1 have a general adaptive seven freedom flow-speed measurement method, it is characterized in that: the synthetic processing module of flow velocity signal also has the synthetic Processing Algorithm module of flow velocity signal, and the synthetic Processing Algorithm module of flow velocity signal synthesizes a velocity vector signal that comprises these components with six direction flow velocity signal and one dimension time signal.
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| CN104296792B (en) * | 2014-09-18 | 2017-01-25 | 中国核电工程有限公司 | Measuring system for thermal parameters of spatial flow field |
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| CN201335841Y (en) * | 2008-09-27 | 2009-10-28 | 上海第二工业大学 | Multiple degree of freedom flow velocity sensor |
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