CN103399170A - Automatic reset differential pressure module and method for measuring wind speed and wind direction - Google Patents
Automatic reset differential pressure module and method for measuring wind speed and wind direction Download PDFInfo
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- CN103399170A CN103399170A CN2013103605976A CN201310360597A CN103399170A CN 103399170 A CN103399170 A CN 103399170A CN 2013103605976 A CN2013103605976 A CN 2013103605976A CN 201310360597 A CN201310360597 A CN 201310360597A CN 103399170 A CN103399170 A CN 103399170A
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Abstract
The invention discloses an automatic reset differential pressure module and a method for measuring wind speed and wind direction. The module comprises an automatic reset component and a micro differential pressure element; the micro differential pressure element is provided with a sampling port I and a sampling port II; the automatic reset component is provided with an interface I, an interface II and an interface III; the interface I and the interface III can be in communication with the interface II through an electrical controlled and driven switching way, or be closed; a detection device in the invention adopts the structure of the automatic reset component, and is suitable for measuring the wind speed and the wind direction in extremely poor working conditions such as in coal mine and the like, the measuring accuracy and the stability are higher, a zero point calibration function is achieved, the structure is simple, the processing and the assembling are easy, the using period is longer, the use cost is saved, the nonlinear property of delaying after full range work of a diffused silicon pressure sensor is eliminated, the use proves that zero point variation is less than 0.1 Pa within the range of 0 to 40 DEG C, and stable measuring of 0.1 Pa can be achieved.
Description
Technical field
The present invention relates to a kind of safe auxiliary device that is applicable under coal mine, particularly a kind of method of differential pressure module of automatic clear and detection wind speed, wind direction.
Background technology
Mine ventilation continuously is sent to down-hole to ground air exactly, continuously the down-hole vitiated air is discharged outside well simultaneously.Mine ventilation is the basis of Safety of Coal Mine Production, it not only has, and each carries fresh distinguished and admirable with the wind place to down-hole, ensure the critical function that underground operators is breathed, simultaneously, also have dilution, get rid of the functions such as cooling between mine gas and dust and operation area.Reasonably ventilating is the important means that suppresses coal nature and fire development, if but ventilating system is arranged unreasonable or miscarriage, with the main cause that causes exactly methane accumulation and spontaneous fire and cause gas, fire failure further to enlarge.Therefore the aeration technology and the level monitoring that improve mine are the bases that guarantees mine normal production and safety case, and wind speed, wind transducer are the Main Means of wind speed size and wind direction situation under monitor well, for guarantee work safety of coal mine production provides strong technical guarantee.The air velocity transducer of prior art adopts ultrasound wave vortex street principle mostly, and measurement means is comparatively single, and equipment uses comparatively constraint, underaction, and long-term work is subject to the dust influence of moisture, affects measuring accuracy; The rear sensor that the differential pressure type measuring principle occurs,, such as shrinking the tubular type air velocity transducer, still can not realize Bidirectional wind speed, wind direction Measurement accuracy; And the sensor does not have the automatic clear ability, but Hysteresis Nonlinear characteristic and the zero temperature drift characteristic of intrinsic unconventional, the many-valued correspondence of pressure transducer itself have limited its measuring accuracy.
In prior art, the pressure difference sensor that automatically controlled automatic zero point correcting occurred, valve member as disclosed in patented claim 201180032464.5, function with automatic zero point correcting, but its complex structure, process and assemble is extremely difficult, and, this product is because quality of fit between each kinematic pair is had relatively high expectations, thereby sealing property that need to be high, otherwise for the occasion of the inclement conditions such as colliery, can lose efficacy.
Therefore, need a kind of differential pressure module of automatic clear, be applicable to extremely abominable occasion measuring wind and the wind directions of condition such as colliery, have higher measuring accuracy and stability, have the zero point correction function, simple in structure, process and assemble is easy, and life cycle is longer, saves use cost.
Summary of the invention
In view of this, the invention provides a kind of differential pressure module of automatic clear and detect the method for wind speed, wind direction, be applicable to extremely abominable occasion measuring wind and the wind directions of condition such as colliery, has higher measuring accuracy and stability, have the zero point correction function, simple in structure, process and assemble is easy, and life cycle is longer, saves use cost.
The differential pressure module of automatic clear of the present invention, comprise automatic clear assembly and micro-pressure-difference element;
Described micro-pressure-difference element has sample tap I and sample tap II;
The automatic clear assembly is provided with interface I, interface II and interface III, and described interface I is communicated in probe high-pressure sampling mouth, and the interface II is communicated in the sample tap I, and the interface III is communicated in the sample tap II; Described sample tap II also is communicated in probe low pressure sample tap, can be communicated with or close with the interface II by the mode of automatically controlled driving switching between described interface I and interface III.
Further, also comprise automatic control system; Described automatic clear assembly comprise have the interface I, the two-bit triplet solenoid valve of interface II and interface III;
Described automatic control system comprises:
Command input unit, be used for the input external command;
CPU (central processing unit), be used for receiving the pressure difference signal of external command, micro-pressure-difference element and to the control circuit of two-bit triplet solenoid valve, export control command;
The data output unit, be used for receiving the command signal of CPU (central processing unit) and exporting data message;
Further, automatic control system also comprises for the control command that receives CPU (central processing unit) and sends the alarm unit of alerting signal;
Further, described CPU (central processing unit), micro-pressure-difference element and two-bit triplet solenoid valve and control circuit plastic packaging thereof are in a housing, and described command input unit and data output unit are positioned at this surface of shell;
Further, described automatic clear assembly also comprises the three-way piece that is communicated in probe low pressure sample tap, sample tap II and interface III.
The invention also discloses a kind of differential pressure module measuring wind of automatic clear, method of wind direction utilized, comprise the following steps:
A. opening device, determine whether device is cleared condition; Otherwise that connects the automatic clear assembly is provided with interface II and interface III, makes the both positive and negative polarity of differential pressure element be in same pressure environment and reach the zero clearing time of setting;
B. cut off the on-state between interface II and interface III and connect the interface I and the interface II, making the distinguished and admirable differential pressure that causes of micro-pressure-difference element testing, and differential pressure signal is converted to electric signal delivers to CPU (central processing unit), calculating the air speed data signal;
C. CPU (central processing unit) exports the electric signal in step b to the data output unit and according to the air speed value that detects, lower than lower limit, higher than higher limit or wind direction, when reverse, control alarm unit and report to the police.
beneficial effect of the present invention: the differential pressure module of automatic clear of the present invention and detection wind speed, the method of wind direction, module adopts the structure of automatic clear assembly, be applicable to extremely abominable occasion measuring wind and the wind directions of condition such as colliery, measuring accuracy and stability are higher, has the zero point correction function, simple in structure, process and assemble is easy, and life cycle is longer, save use cost, Hysteresis Nonlinear characteristic after the work of elimination diffusion silicon pressure sensor full scale, through using, in 0～40 ℃ of scope of the present invention, the Zero change amount is less than 0.1Pa, can realize the stably measured of 0.1Pa.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is principle of the invention block diagram;
Fig. 2 is detection method process flow diagram of the present invention.
Embodiment
Fig. 1 is principle of the invention block diagram; As shown in the figure: the differential pressure module of automatic clear of the present invention comprises automatic clear assembly and micro-pressure-difference element; Micro-pressure-difference element 8 is general adopts existing pressure transducer to make, and does not repeat them here;
Described micro-pressure-difference element has sample tap I 81 and sample tap II 82;
The automatic clear assembly is provided with interface I 61, interface II 62 and interface III 63, and described interface I 61 is communicated in probe 1 high-pressure sampling mouth 11, and interface II 62 is communicated in sample tap I 81, and interface III 63 is communicated in sample tap II 82; Described sample tap II 82 also is communicated in probe 1 low pressure sample tap 12, can be communicated with or close with interface II 62 by the mode of automatically controlled driving switching between described interface I 61 and interface III 63;
According to said structure, the switching between interface I 61 and interface III 63 can realize by solenoid valve, also can adopt other electric drives structure, realizes automatic clear; Conducting between interface I 61 and interface II 62, sample tap I 81 and sample tap II 82 respectively with probe high-pressure sampling mouth and the conducting of probe low pressure sample tap, belong to the testing state; Conducting between interface III 63 and interface II 62, sample tap I 81 and sample tap II 82 are communicated with, and the sample tap I 81 of micro-pressure-difference element 8 is identical with sample tap II 82 pressure, belongs to the state conducting of making zero.
In the present embodiment, in the present embodiment, also comprise automatic control system; Described automatic clear assembly comprise have interface I 61, the two-bit triplet solenoid valve 6 of interface II 62 and interface III 63;
Described automatic control system comprises:
Command input unit 10, be used for the input external command; This external command has referred to the general instruction of detection, generally comprises startup, automatic clear, warning starts or stops and data are preserved etc.
CPU (central processing unit) 3, be used for receiving the pressure difference signal of external command, micro-pressure-difference element 8 and to the control circuit 7 of two-bit triplet solenoid valve 6, export control commands; The pressure difference signal of micro-pressure-difference element 8 is basic datas that two-bit triplet solenoid valve 6 opens and closes, and namely according to this signal deciding two-bit triplet solenoid valve, is in detecting position or zero clearing position;
In the present embodiment, automatic control system also comprises for the control command that receives CPU (central processing unit) 3 and sends the alarm unit 5 of alerting signal, alarm unit generally comprises acoustic alarm, light and reports to the police or sound and light alarm, surpasses the upper limit in air speed value, rolls off the production line or wind direction can be reported to the police when opposite.
In the present embodiment, described CPU (central processing unit), micro-pressure-difference element and two-bit triplet solenoid valve and control circuit plastic packaging thereof are in a housing 2, and described command input unit and data output unit 4 are positioned at this housing 2 surfaces; Plastic packaging generally adopts epoxy resin or other plastic injection-moulded fixing modes, adopts the structure of plastic packaging to make this structural integrity strong, has water proof and dust proof preferably, and the ability of opposing external force is stronger.
In the present embodiment, described automatic clear assembly also comprises the three-way piece that is communicated in gas outlet II 12, sample tap II 82 and interface III 63; Adopt the syndeton of threeway, whole gas circuit is arranged neatly, easy installation and removal.
Fig. 2 is detection method process flow diagram of the present invention, and a kind of method of utilizing the differential pressure module measuring wind of automatic clear of the present invention, comprise the following steps:
A. opening device, power on and initialization, and read micro-pressure-difference element pressure difference data, determines whether device is cleared condition; Otherwise that connects the automatic clear assembly is provided with interface II and interface III, makes the both positive and negative polarity of differential pressure element be in same pressure environment and reach the zero clearing time of setting; Reach the zero clearing time or start first original paper and complete zero clearing;
B. cut off the on-state between interface II and interface III and connect the interface I and the interface II, making the distinguished and admirable differential pressure that causes of micro-pressure-difference element testing, and differential pressure signal is converted to electric signal delivers to CPU (central processing unit), calculating the air speed data signal;
C. CPU (central processing unit) exports the electric signal in step b to the data output unit and according to the air speed value that detects, lower than lower limit, higher than higher limit or wind direction, when reverse, control alarm unit and report to the police.
In step b, need, by impulse spare, pressure is introduced interface I and interface II.
Explanation is finally, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (6)
1. the differential pressure module of an automatic clear, is characterized in that: comprise automatic clear assembly and micro-pressure-difference element;
Described micro-pressure-difference element has sample tap I and sample tap II;
The automatic clear assembly is provided with interface I, interface II and interface III, and described interface I is communicated in probe high-pressure sampling mouth, and the interface II is communicated in the sample tap I, and the interface III is communicated in the sample tap II; Described sample tap II also is communicated in probe low pressure sample tap, can be communicated with or close with the interface II by the mode of automatically controlled driving switching between described interface I and interface III.
2. the differential pressure module of automatic clear according to claim 1, is characterized in that: also comprise automatic control system; Described automatic clear assembly comprise have the interface I, the two-bit triplet solenoid valve of interface II and interface III;
Described automatic control system comprises:
Command input unit, be used for the input external command;
CPU (central processing unit), be used for receiving the pressure difference signal of external command, micro-pressure-difference element and to the control circuit of two-bit triplet solenoid valve, export control command;
The data output unit, be used for receiving the command signal of CPU (central processing unit) and exporting data message.
3. the differential pressure module of automatic clear according to claim 2 is characterized in that: automatic control system also comprises for the control command that receives CPU (central processing unit) and sends the alarm unit of alerting signal.
4. the differential pressure module of automatic clear according to claim 2, it is characterized in that: described CPU (central processing unit), micro-pressure-difference element and two-bit triplet solenoid valve and control circuit plastic packaging thereof are in a housing, and described command input unit and data output unit are positioned at this surface of shell.
5. the differential pressure module of automatic clear according to claim 1 is characterized in that: described automatic clear assembly also comprises the three-way piece that is communicated in probe low pressure sample tap, sample tap II and interface III.
6. one kind is utilized the differential pressure module measuring wind of automatic clear, the method for wind direction, it is characterized in that: comprise the following steps:
A. opening device, determine whether device is cleared condition; Otherwise that connects the automatic clear assembly is provided with interface II and interface III, makes the both positive and negative polarity of differential pressure element be in same pressure environment and reach the zero clearing time of setting;
B. cut off the on-state between interface II and interface III and connect the interface I and the interface II, making the distinguished and admirable differential pressure that causes of micro-pressure-difference element testing, and differential pressure signal is converted to electric signal delivers to CPU (central processing unit), calculating the air speed data signal;
C. CPU (central processing unit) exports the electric signal in step b to the data output unit and according to the air speed value that detects, lower than lower limit, higher than higher limit or wind direction, when reverse, control alarm unit and report to the police.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103605976A CN103399170A (en) | 2013-08-16 | 2013-08-16 | Automatic reset differential pressure module and method for measuring wind speed and wind direction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103605976A CN103399170A (en) | 2013-08-16 | 2013-08-16 | Automatic reset differential pressure module and method for measuring wind speed and wind direction |
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| CN103399170A true CN103399170A (en) | 2013-11-20 |
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| CN2013103605976A Pending CN103399170A (en) | 2013-08-16 | 2013-08-16 | Automatic reset differential pressure module and method for measuring wind speed and wind direction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459197A (en) * | 2014-12-15 | 2015-03-25 | 中煤科工集团重庆研究院有限公司 | Method and system for reducing lower limit of field pipeline gas flow velocity measurement |
| CN109884341A (en) * | 2019-03-25 | 2019-06-14 | 中煤科工集团重庆研究院有限公司 | Method and system for automatically calibrating differential pressure zero value of wind speed measurement |
Citations (4)
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| CN2108927U (en) * | 1991-12-29 | 1992-07-01 | 南昌市惠通电工厂 | Differential pressure flow and velocity sensor |
| CN2516944Y (en) * | 2001-12-25 | 2002-10-16 | 梁永 | Flow measuring device with Pitot tube |
| CN201402160Y (en) * | 2009-04-28 | 2010-02-10 | 南京华彭科技有限公司 | Pitot tube flowmeter with zero point calibration function |
| CN102971613A (en) * | 2010-06-28 | 2013-03-13 | Ta海德罗尼克斯有限责任公司 | Valve assembly for a differential pressure sensor with automatic zero point calibration and flushing |
-
2013
- 2013-08-16 CN CN2013103605976A patent/CN103399170A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2108927U (en) * | 1991-12-29 | 1992-07-01 | 南昌市惠通电工厂 | Differential pressure flow and velocity sensor |
| CN2516944Y (en) * | 2001-12-25 | 2002-10-16 | 梁永 | Flow measuring device with Pitot tube |
| CN201402160Y (en) * | 2009-04-28 | 2010-02-10 | 南京华彭科技有限公司 | Pitot tube flowmeter with zero point calibration function |
| CN102971613A (en) * | 2010-06-28 | 2013-03-13 | Ta海德罗尼克斯有限责任公司 | Valve assembly for a differential pressure sensor with automatic zero point calibration and flushing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459197A (en) * | 2014-12-15 | 2015-03-25 | 中煤科工集团重庆研究院有限公司 | Method and system for reducing lower limit of field pipeline gas flow velocity measurement |
| CN109884341A (en) * | 2019-03-25 | 2019-06-14 | 中煤科工集团重庆研究院有限公司 | Method and system for automatically calibrating differential pressure zero value of wind speed measurement |
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Application publication date: 20131120 |