CN204347062U - Cup type air velocity transducer threshold wind velocity check system - Google Patents

Cup type air velocity transducer threshold wind velocity check system Download PDF

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Publication number
CN204347062U
CN204347062U CN201520030349.XU CN201520030349U CN204347062U CN 204347062 U CN204347062 U CN 204347062U CN 201520030349 U CN201520030349 U CN 201520030349U CN 204347062 U CN204347062 U CN 204347062U
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CN
China
Prior art keywords
type air
module
cup type
air velocity
velocity transducer
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Expired - Fee Related
Application number
CN201520030349.XU
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Chinese (zh)
Inventor
行鸿彦
李阳
王秋阳
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Clouds Nanjing Environmental Monitoring Technology Development Co. Ltd.
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Nanjing University of Information Science and Technology
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Priority to CN201520030349.XU priority Critical patent/CN204347062U/en
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Publication of CN204347062U publication Critical patent/CN204347062U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of cup type air velocity transducer threshold wind velocity check system, comprise optoelectronic switch module and the driving voltage module connected successively, strain tension sensor, filtering circuit, AD conversion module, one-chip computer module, display and memory module; Optoelectronic switch module is connected with one-chip computer module, when starting for the cup type air velocity transducer of assistant SCM module acquires moment staring torque numerical value; Optoelectronic switch module is fixed on the vertical plane of vane Plane of rotation of cup type air velocity transducer; Strain tension sensor is connected with cup type air velocity transducer, for the transformation of realizable force signal to voltage signal; Filtering circuit is connected with the output signal line of strain tension sensor, for suppressing differential mode interference in signals transmission and common mode interference.The utility model to the measurement of cup type air velocity transducer staring torque, can carry out field condition calibration to threshold wind velocity indirectly.

Description

Cup type air velocity transducer threshold wind velocity check system
Technical field
The utility model relates to a kind of cup type air velocity transducer threshold wind velocity check system, belongs to electronic surveying and meteorological phenomena measurement field.
Background technology
At present, for cup type air velocity transducer is not a set of can be quick, accurately carry out the system of field-checking.The most common to cup type air velocity transducer threshold wind velocity at present, verification mode is delivered to special measurement verification unit the most accurately and reliably, utilizes wind tunnel device to carry out calibrating and measuring.
Utilize the method to be subject to the restriction of experiment equipment, only can verify cup type air velocity transducer in specific experiment place.Equipment needed for method is loaded down with trivial details, not quick detachable, and the volume of wind-tunnel facilities is large, and Portability is poor.Although the method can compare accurate verification to cup type air velocity transducer, and is not suitable for the field-checking of cup type air velocity transducer.Therefore a set of system that can realize carrying out cup type air velocity transducer field-checking is studied imperative.Threshold wind velocity due to cup type air velocity transducer is determined by its staring torque, therefore from the viewpoint of this, can seek new verification mode.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of cup type air velocity transducer threshold wind velocity check system, and this system is a kind of portable, cup type air velocity transducer threshold wind velocity check system of being applicable to carry out field condition verification.Threshold wind velocity to the field-checking of cup type air velocity transducer in order to realize, is converted to staring torque, then verify by the utility model, and measuring principle is relatively simple, is more applicable for the field-checking of cup type air velocity transducer.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
The utility model provides a kind of cup type air velocity transducer threshold wind velocity check system, comprises optoelectronic switch module and the driving voltage module connected successively, strain tension sensor, filtering circuit, AD conversion module, one-chip computer module, display and memory module; Optoelectronic switch module is connected with one-chip computer module, when starting for the cup type air velocity transducer of assistant SCM module acquires moment staring torque numerical value; Optoelectronic switch module is fixed on the vertical plane of vane Plane of rotation of cup type air velocity transducer; Strain tension sensor is connected with cup type air velocity transducer, for the transformation of realizable force signal to voltage signal; Filtering circuit is connected with the output signal line of strain tension sensor, for suppressing differential mode interference in signals transmission and common mode interference.
As further prioritization scheme of the present utility model, the two-beam type S type pulling force sensor of strain tension sensor to be model be LDCZL-SD.
As further prioritization scheme of the present utility model, AD conversion module is the model that TI company produces is the analog to digital converter of ADS1232.
As further prioritization scheme of the present utility model, the NPN type infrared emission switch open in usual of optoelectronic switch module to be model be HD-DS25CM-3MM.
As further prioritization scheme of the present utility model, display and memory module are 12864 liquid crystal that are connected with one-chip computer module respectively and model is the storer of 24C08.
As further prioritization scheme of the present utility model, the single-chip microcomputer of one-chip computer module to be model be MSP430F149.
As further prioritization scheme of the present utility model, also comprise the serial line interface be connected with one-chip computer module, for carrying out data transmission with outer PC.
As further prioritization scheme of the present utility model, filtering circuit is simulation low-pass filter.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
(1) the utility model adopts one-chip computer module, high-precision AD conversion chip and ratiometric technology to simplify circuit, convert cup type air velocity transducer threshold wind velocity to staring torque to measure, power consumption is little, structure is simple, easily portable, the field-checking for cup type air velocity transducer threshold wind velocity provides conveniently;
(2) in the utility model, one-chip computer module, by judging the height of optoelectronic switch module output terminal level, judges whether cup type air velocity transducer starts, to reduce error when gathering staring torque.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the schematic diagram of middle optoelectronic switch module of the present utility model and cup type air velocity transducer, and wherein, (a) is front view, and (b) is vertical view.
In figure: the cup type air velocity transducer of 1-, 2-optoelectronic switch.
Embodiment
Those skilled in the art of the present technique are understandable that, the correlation module related in the utility model and the function of realization thereof are the devices of hardware after improvement and formation thereof, device or system carry computer software programs conventional in prior art or pertinent protocols just can realize, and are not improve computer software programs of the prior art or pertinent protocols.Such as, the computer hardware system after improvement still can realize the specific function of this hardware system by loading existing operation system of software.Therefore, be understandable that, innovation of the present utility model is the improvement of hardware module in prior art and connects syntagmatic, but not be only in hardware module for realizing the improvement of software or the agreement of carrying about function.
Those skilled in the art of the present technique are understandable that, the correlation module mentioned in the utility model is the one or more hardware device for performing in step in operation, method, flow process described in the application, measure, scheme.Described hardware device for required object and specialized designs and manufacture, or also can adopt the known device in multi-purpose computer or other known hardware devices.Described multi-purpose computer activates or reconstructs with having storage procedure Selection within it.
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
A kind of cup type air velocity transducer threshold wind velocity check system of the utility model design, as shown in Figure 1, optoelectronic switch module and the driving voltage module connected successively, strain tension sensor, filtering circuit, AD conversion module, one-chip computer module, display and memory module is comprised; Optoelectronic switch module is connected with one-chip computer module, when starting for the cup type air velocity transducer of assistant SCM module acquires moment staring torque numerical value; Optoelectronic switch module is fixed on the vertical plane of vane Plane of rotation of cup type air velocity transducer; Strain tension sensor is connected with cup type air velocity transducer, for the transformation of realizable force signal to voltage signal; Filtering circuit is connected with the output signal line of strain tension sensor, for suppressing differential mode interference in signals transmission and common mode interference.
Wherein, driving voltage module provides stable 5V DC voltage for strain tension sensor, simultaneously also for AD conversion module provides the reference voltage of 5V, realizes voltage ratio formula and measures; Filtering circuit is connected with the output signal line of strain tension sensor, for suppressing differential mode interference in signals transmission and common mode interference; Strain tension sensor module is connected with cup type air velocity transducer, and realizable force signal is to the transformation of voltage signal; The output signal of AD conversion module to strain tension sensor module processes; Optoelectronic switch module is fixed on the vertical plane of vane Plane of rotation, and the receiving end of optoelectronic switch is connected with one-chip computer module, is used for the cup type air velocity transducer of assistant SCM module acquires to start the numerical value of moment staring torque; Display and memory module for showing the numerical value of staring torque and threshold wind velocity, and store coefficient therebetween.
In the utility model, also comprise the serial line interface be connected with one-chip computer module, one-chip computer module is connected with outer PC by serial line interface, measurement data can be sent to upper computer module and carry out data processing and and show.
In the utility model, what driving voltage module adopted is 78M05 voltage stabilizing chip, realizes the conversion of the output voltage being input to 5V by the voltage of 9V power supply adaptor.This module provides driving voltage for strain tension sensor, simultaneously also for AD conversion module provides reference voltage, realizes voltage ratio formula and measures.In voltage ratio formula metering circuit, the reference voltage of AD conversion module and the driving voltage of electric bridge are provided by same power supply.Mean concerning A/D conversion analog input and reference voltage, noise is common, can eliminate the impact of operating voltage on sensor output signal like this.A/D transformation result has nothing to do with bridge excitation voltage and reference voltage, and only relevant with the resistance change of brachium pontis.Which simplify the voltage source of A/D converter reference voltage and the design in bridge excitation voltage source, and better degree of accuracy can be ensured
In the utility model, the two-beam type S type pulling force sensor of strain tension sensor to be model be LDCZL-SD, is converted into differential voltage signal by the change of external force, and imports AD conversion module into and carry out data processing; AD conversion module is the model that TI company produces is the analog to digital converter of ADS1232, and it is the PGA of built-in low noise, 24 delta-sigma pattern number converters of digital filter, and simplifies circuit design in conjunction with ratiometric; The NPN type infrared emission switch open in usual of optoelectronic switch module to be model be HD-DS25CM-3MM, its receiving end signal exports with the form of low and high level, exports as high level during have no occluder, has during shelter and exports as low level; Display and memory module are 12864 liquid crystal that are connected with one-chip computer module respectively and model is the nonvolatile memory of 24C08; The single-chip microcomputer of one-chip computer module to be model be MSP430F149, is used for judging the level height of optoelectronic switch output terminal, and the output data of process AD conversion module also carry out data processing to it, export the size of staring torque and threshold wind velocity; Filtering circuit adopts the mode of mean filter, and mean filter sampling number selects 15 adjacent points.
Principle of work and the course of work of the utility model cup type air velocity transducer threshold wind velocity check system are as follows:
After beginning, first system carries out initial configuration to AD conversion module, comprising: carry out bias correction (in order to eliminate internal bias error) to ADS1232, input channel select, inner PGA gain be configured to 128 times, the selection 80SPS of data output rate.Adopt the mode of mean filter to carry out data processing to the output of AD conversion module, mean filter sampling number selects 15 adjacent points.Thereafter, carry out start zeroing to system: the output that strain tension sensor zero load is is stored in 24C08, single-chip microcomputer passes through to read the data in 24C08, to eliminate the initial unbalance of the inner electric bridge of strain tension sensor.
Strain tension sensor is connected with cup type air velocity transducer, and in the Plane of rotation of vane, and with the direction of vane otch plane orthogonal on slowly apply pulling force.The vertical plane of vane Plane of rotation is fixed the optoelectronic switch of a pair infrared emission, and as shown in Figure 2, wherein, (a) is front view, and (b) is vertical view.When cup type air velocity transducer is static, have no occluder between optoelectronic switch, optoelectronic switch receiving end exports as high level, and one-chip computer module controls AD conversion module and carries out AD conversion to the voltage that strain force sensor exports; When strain tension sensor pulls vane to start to rotate, infrared ray between optoelectronic switch two probe is cut by the vane rotated, optoelectronic switch receiving end output low level, with single-chip microcomputer, this low level is detected, control AD conversion module and AD conversion is carried out to the voltage that strain force sensor exports; One-chip computer module is to just recording vane like this from the static moment to rotating, and the moment values that cup type air velocity transducer bears, and the numerical value being translated into threshold wind velocity, shown the two.
The above; be only the embodiment in the utility model; but protection domain of the present utility model is not limited thereto; any people being familiar with this technology is in the technical scope disclosed by the utility model; the conversion or replacement expected can be understood; all should be encompassed in and of the present utility modelly comprise within scope, therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.

Claims (8)

1. cup type air velocity transducer threshold wind velocity check system, is characterized in that, comprises optoelectronic switch module and the driving voltage module connected successively, strain tension sensor, filtering circuit, AD conversion module, one-chip computer module, display and memory module;
Optoelectronic switch module is connected with one-chip computer module, when starting for the cup type air velocity transducer of assistant SCM module acquires moment staring torque numerical value;
Optoelectronic switch module is fixed on the vertical plane of vane Plane of rotation of cup type air velocity transducer;
Strain tension sensor is connected with cup type air velocity transducer, for the transformation of realizable force signal to voltage signal;
Filtering circuit is connected with the output signal line of strain tension sensor, for suppressing differential mode interference in signals transmission and common mode interference.
2. cup type air velocity transducer threshold wind velocity check system according to claim 1, is characterized in that, the two-beam type S type pulling force sensor of strain tension sensor to be model be LDCZL-SD.
3. cup type air velocity transducer threshold wind velocity check system according to claim 1, is characterized in that, AD conversion module is the model that TI company produces is the analog to digital converter of ADS1232.
4. cup type air velocity transducer threshold wind velocity check system according to claim 1, is characterized in that, the NPN type infrared emission switch open in usual of optoelectronic switch module to be model be HD-DS25CM-3MM.
5. cup type air velocity transducer threshold wind velocity check system according to claim 1, is characterized in that, display and memory module are 12864 liquid crystal that are connected with one-chip computer module respectively and model is the storer of 24C08.
6. cup type air velocity transducer threshold wind velocity check system according to claim 1, is characterized in that, the single-chip microcomputer of one-chip computer module to be model be MSP430F149.
7. cup type air velocity transducer threshold wind velocity check system according to claim 1, is characterized in that, also comprise the serial line interface be connected with one-chip computer module, for carrying out data transmission with outer PC.
8. cup type air velocity transducer threshold wind velocity check system according to claim 1, it is characterized in that, filtering circuit is simulation low-pass filter.
CN201520030349.XU 2015-01-16 2015-01-16 Cup type air velocity transducer threshold wind velocity check system Expired - Fee Related CN204347062U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520030349.XU CN204347062U (en) 2015-01-16 2015-01-16 Cup type air velocity transducer threshold wind velocity check system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520030349.XU CN204347062U (en) 2015-01-16 2015-01-16 Cup type air velocity transducer threshold wind velocity check system

Publications (1)

Publication Number Publication Date
CN204347062U true CN204347062U (en) 2015-05-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104991085A (en) * 2015-07-31 2015-10-21 南京信息工程大学 Wind speed sensor start-up wind speed on-site calibration apparatus and start-up wind speed acquisition method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104991085A (en) * 2015-07-31 2015-10-21 南京信息工程大学 Wind speed sensor start-up wind speed on-site calibration apparatus and start-up wind speed acquisition method

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C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20161031

Address after: 205 C1 building 15, Jiangpu street, Pukou District, Nanjing District, Jiangsu, Wanshou Road 211899, China

Patentee after: Clouds Nanjing Environmental Monitoring Technology Development Co. Ltd.

Address before: 210044 Nanjing City, Pukou Province, Nanjing Road, No. 219, No. six, No.

Patentee before: Nanjing University of Information Science and Technology

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150520

Termination date: 20170116