CN101650244B - Portable multipath wind pressure and wind speed tester - Google Patents
Portable multipath wind pressure and wind speed tester Download PDFInfo
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- CN101650244B CN101650244B CN2008100541276A CN200810054127A CN101650244B CN 101650244 B CN101650244 B CN 101650244B CN 2008100541276 A CN2008100541276 A CN 2008100541276A CN 200810054127 A CN200810054127 A CN 200810054127A CN 101650244 B CN101650244 B CN 101650244B
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Abstract
The invention discloses a portable multipath wind pressure and wind speed tester, which consists of a shell, a display, a special keyboard, a single chip and a system management program/data memory thereof, a differential pressure sensor and a data acquisition and processing unit. Wind pressure sampling channels which correspond to each air pipeline to be tested respectively are arranged in parallel on the surface of the shell, each wind pressure sampling channel consists of a positive pressure side interface and a negative pressure side interface respectively, each channel is provided with the differential pressure sensor respectively, the analog quantity output of each differential pressure sensor is selected through an analog multipath switch and is connected with an input end of an A/D conversion circuit respectively, an output end of the A/D conversion circuit is connected with a data inlet of the single chip, and the single chip is provided with a serial communication interface. The tester is provided with a multi-channel sensor and an A/D converter which can be used for measuring and displaying wind pressure and wind speed data of each channel and a trend map of each channel simultaneously or respectively, and simultaneously, the multipath wind pressure and wind speed tester is also convenient for adjusting air door baffle plates which correspond to a plurality of ejector nozzles in a cooperating mode repeatedly so as to ensure the testing precision.
Description
Technical field
The invention belongs to proving installation, particularly relate to a kind of portable multipath wind pressure and wind speed tester that is used for boiler correlated performance tests such as boiler performance test, burning optimization adjustment, fan performance test, pulverized coal preparation system performance test.
Background technology
At present, the wind pressure and wind speed proving installation that is used for the test of boiler correlated performance both at home and abroad is single channel, promptly can only measure the wind pressure and wind speed data of an airflow line at every turn.
In actual tests, for example the boiler combustion situation is optimized the test of adjustment, its process often need be worked in coordination with adjustment to the pairing air door baffle plate of a plurality of spouts repeatedly.
Because the combustion air of each spout input is introduced from same header; Inevitably there is the adverse effect of phase mutual interference in the wind speed of each spout in collaborative adjustment process; Make the measured value that has write down occur changing by said single channel wind pressure and wind speed proving installation, or even bigger variation.Therefore, through adjusting the balanced air distribution that also is difficult to realize all spouts repeatedly, influenced test accuracy and prolonged test period in the process of the test.Obviously, there is the technical matters of incompatibility multi-port boiler correlated performance test in above-mentioned single pass wind pressure and wind speed proving installation.
Summary of the invention
The objective of the invention is in order to solve the technical matters that there is incompatibility multi-port boiler correlated performance test in present single pass wind pressure and wind speed proving installation, and disclose a kind of portable multipath wind pressure and wind speed tester.
The present invention takes following technical scheme by the realization above-mentioned purpose: this tester is made up of portable housing, LCD and keyboard special, single-chip microcomputer and system supervisor/data-carrier store thereof, little differential pressure sensor, data acquisition and processing unit; It is characterized in that portable surface of shell is provided with the blast sampling passage of respectively corresponding each air duct to be measured side by side; Each blast sampling passage is made up of malleation side interface and suction side interface respectively; Each passage is respectively equipped with little differential pressure sensor; The analog quantity output of each little differential pressure sensor is selected to join with A/D change-over circuit input end respectively via analog multichannel switch; A/D change-over circuit output terminal and single-chip data inlet join, and single-chip microcomputer is provided with serial communication interface.
The present invention can also take following technical measures:
Said keyboard special is provided with the numerical key that comprises "+", "-" and ". " key; Also be provided be respectively applied for revise to key in that numeral, cursor move, data query record and hyperchannel measure the operating key of switching with single channel; Also be provided with and be used for cancellation, withdraw from or confirm that operating key, keyboard special also are provided with menu key, blast range ability options button, get into wind pressure measurement interface control key and get into measuring wind speed interface control key.
Said cursor movement control key is made up of " ↑ ", " ↓ ", " ← ", " → ", " Home " and " End " key; Wherein " ↑ ", " ↓ ", " ← ", " → " key constitute compound keys with numerical key " 8 ", " 2 ", " 4 ", " 6 " respectively; " Home " key and numerical key " 7 " constitute compound keys; " End " key and numerical key " 1 " constitute compound keys, said cursor movement control key " ↑ ", " ↓ " respectively with multi-channel measurement wind speed or blast operating key and single channel measuring wind or blast operating key formation compound keys.
Turn over operating key " PgUp " before the said page and constitute compound keys, turn over operating key " PgDn " key and numerical key " 3 " behind the page and constitute compound keys with numerical key " 9 ".
Said entering wind pressure measurement interface control key is " Pa " key, and said entering measuring wind speed interface control key is " m/s " key, and " Pa " key is preferential operating key with " m/s " key.
The panel of said portable housing is provided with backlight switch.
Said portable housing is provided with rechargeable battery set and rectifier power source, rectifier power source double as rechargeable battery set charge power supply.
Beneficial effect of the present invention and advantage are: the measuring-signal of this portable multipath wind pressure and wind speed tester is that the elementary errors that primary element obtains under wind action is pressed signal; This signal converts electric signal to through the little differential pressure sensor of this tester; Amplify shaping and carry out analog to digital conversion after analog multichannel switch is sent into A/D converter respectively; By CPU data are carried out Computer Processing again; And final wind pressure and wind speed stored and shows, and through the RS232 serial ports connect mini-printer realize the real time data printout or with the online data processing of carrying out of PC.Because this tester has hyperchannel little differential pressure sensor and A/D converter thereof; Under the support of system supervisor, can measure, show each passage blast and air speed data and trend map at the same time or separately; Measure at the same time, show under the state of each passage blast and air speed data and trend map; Be convenient to the pairing air door baffle plate of a plurality of spouts is carried out repeatedly collaborative adjustment, thereby test accuracy is protected, and significantly shortened test period.That the present invention has is simple to operate, carry outstanding advantage light, complete function, is particularly suitable for capital construction, experimental study unit and power plant and is applied in the wind speed, wind pressure measurement of the test of boiler correlated performance, technical supervision and technical services such as boiler performance test, burning optimization adjustment, fan performance test, pulverized coal preparation system performance test.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention structural representation.
Accompanying drawing 2 is Fig. 1 numeral and operating key keyboard enlarged drawing.
Accompanying drawing 3 is Fig. 1 function key keyboard enlarged drawings.
Accompanying drawing 5 is Fig. 1 embodiment theory diagrams.
Accompanying drawing 6 is Fig. 1 embodiment main program flow charts.
Accompanying drawing 7 is the display frame of embodiment master menu.
Accompanying drawing 8 is that the embodiment parameter is provided with display frame.
Accompanying drawing 9 is embodiment hyperchannel wind speed test display frame.
Accompanying drawing 10 is embodiment single channel wind speed test display frame.
Accompanying drawing 11 is embodiment hyperchannel blast test display frame.
Accompanying drawing 12 is embodiment single channel blast speed test display frame.
Label among the figure: 1 housing, 2 front panels, 3 LCDs, 4 numerals and operating key keyboard, 5 function key keyboards; 6 backlight switch, 7 power switches, 8 carrying handles, 8-1 lock dog, 9 rear panels; 10 blast sampling passage, 11 AC Power supply sockets, 13 analog quantity accessory power outlets, 14RS232 interface socket.
Embodiment
Further specify the present invention below in conjunction with embodiment and accompanying drawing thereof.
Like Fig. 1,2,3,4 illustrated embodiments, the portable housing of this tester is made up of housing 1, carrying handle 8, and carrying handle 8 has the leg effect concurrently.The lock dog 8-1 that is matched with carrying handle 8 makes the carrying handle location, and its structure is same as prior art, and promptly lock dog 8-1 has inserted sheet, and its inserted sheet engages with a socket of the carrying handle fulcrum that is fixed on housing and locks carrying handle when upwards promoting lock dog.
The front panel 2 of portable housing is provided with LCD 3, keyboard special, backlight switch 6 and power switch 7.Power switch top is provided with charging indicator light.
Keyboard special is made up of with function key keyboard 5 numeral and operating key keyboard 4; Wherein numeral and operating key keyboard 4 are as shown in Figure 2; Numeral and operating key keyboard 4 are made up of "+" key, "-" key, ". " key, " Del " key, " Home " key, " End " key, " PgUp " key, " PgDn " key, " ← " enter key, " Esc " key and 1-0 numerical key, and wherein numerical key " 8 ", " 2 ", " 4 ", " 6 " constitute compound keys respectively with cursor movement control key " ↑ ", " ↓ ", " ← ", " → " key." Home " key and numerical key " 7 " constitute compound keys, and " End " key and numerical key " 1 " constitute compound keys." Home " key is controlled cursor respectively with " End " key control and is got back to " head " at liquid crystal display interface, " tail " end, and " Del " key is used for revising the key entry numeral.Cursor movement control key " ↑ ", " ↓ " constitute compound keys with multi-channel measurement wind speed or blast operating key and single channel measuring wind or blast operating key respectively.Turn over operating key " PgUp " before the page and constitute compound keys, turn over operating key " PgDn " key and numerical key " 3 " behind the page and constitute compound keys with numerical key " 9 ".Page flip when operating key " PgUp ", " PgDn " are used for the data query record." ← " enter key is used to import the affirmation of data or operation." Esc " key is used to cancel previous action or withdraws from current picture.
" Range " key of embodiment have 4 grades optional: 0-1000Pa, 0-2000Pa, 0-4000Pa, 0-8000Pa." Pa " key is preferential operating key with " m/s ".Leveling between same layer four jiaos
As shown in Figure 4; The rear panel 2 of portable housing 1 is provided with #1-#10 blast sampling path 10 arranged side by side; Each blast sampling passage is made up of the malleation side interface and the suction side interface of "+" "-" symbol logo among the figure respectively, and each interface is pegged graft respectively and is communicated in the pressure transmission flexible pipe of each pipe under test sampling test point of boiler.Rear panel 2 also is provided with the analog quantity accessory power outlet 13 and the AC Power supply socket 11 of RS232 interface socket 14, little differential pressure sensor.AC Power supply socket 11 provides AC power for the inner rectifier power source of this tester.
As shown in Figure 5, the formation of this tester embodiment hardware is to be core with the single-chip microcomputer, adopts the AT89C55 chip of atmel corp.Because this tester is main display interface with figure and form; Each figure and form generate a code module and deposit the SCM program storer in; Therefore require the program storage capacity of single-chip microcomputer bigger, its program storage of AT89C55 chip that present embodiment is selected for use can satisfy the high capacity requirement.
Keyboard special is by the two-way single-chip microcomputer PIO mouth that is connected in of its decoding scheme, and its decoding scheme adopts 3-8 code translator 74LS138, and this code translator can be established 24 keys at most.
The calendar clock circuit adopts the DS1302 chip of DALLAS company, adopts the hardware clock system design, have year, the moon, day, the time, branch, second and automatic processing capacity of leap year, and have the power down data and do not lose function.
Data-carrier store adopts the NVRAM storer, belongs to nonvolatile memory, has the advantage that an electric data is not lost, data rate memory is fast, there is not life-span length simply, in theory in program design.
LCD adopts the smart electric company in Hong Kong wide temperature range type graphic dot matrix liquid crystal, and dot matrix is 240 * 128, and has LE04 type backlight circuit, and backlight switch is arranged at front panel.
Each blast sampling tunnel correspondence respectively is connected in little differential pressure sensor 1--10; The analog quantity output of each little differential pressure sensor is joined with A/D change-over circuit input end respectively after selecting via analog multichannel switch, and A/D change-over circuit output terminal and single-chip data inlet join.
The little differential pressure sensor 1--10 of embodiment adopts U.S. Honeywell Company products, as sensing element, has the piezoelectric modulus height with silicon chip, and dynamic response is fast, and the linearity is good, zero point stability, advantage such as volume is little.
The analog multichannel switch of embodiment adopts CD4051, when little differential pressure sensor is difference output, should use two groups of CD4051 respectively as difference (+) input end and difference (-) input end.The control of multi-way switch is carried out through data latches 4LS273 by single-chip microcomputer.
The A/D change-over circuit of embodiment adopts dual integration TC7109 chip, has 12 bit resolutions, and has polarity bit and overflow position, and with the ternary control output of TTL compatible, low noise, low in energy consumption, maximum slewing rate is 30 times/second, and the output of internal reference power supply is arranged.
Data output is accomplished through the RS232 serial ports, PC is printed or sent to data handle.
Power-supply system is made up of rechargeable battery set, power management and rectifier power source, and the rechargeable battery set continuous working is about 8 hours.Under electric power management circuit control, the work of can starting shooting when rectifier power source charges to electric battery.
As shown in Figure 6, the system supervisor of this tester embodiment gets into the self check subroutine after start, and the self check content is whether rechargeable battery set voltage, historical data capacity transfinite, and self check is provided with three kinds of selections through the back program.
A kind of selection is to get into master menu display frame as shown in Figure 7 through menu key " Fn "; This picture is provided with the title block that comprises date, time, current picture title; The picture bottom is provided with the function selecting menu bar; Can get into parameter setting, the inquiry of historical data, analog quantity output (little differential pressure sensor) and little differential pressure sensor balance check sprite respectively through clicking, relevant options is set respectively in each sprite.
For example click entering parameter as shown in Figure 8 sprite is set, this sprite is used to be provided with system time and other correlation parameters, and the picture bottom is provided with and revises affirmation, the master menu options is revised, withdrawed from and return to system time.
The another kind of selection is directly to get into measuring wind speed sprite as shown in Figure 9 through preferential operating key " m/s " key, the #1-#10 passage air speed value that this sprite shows respectively with " * * * " in scheming and excellent diagram form.Channel number is corresponding one by one with the channel number of rear panel among the figure.The picture bottom is provided with printing, stores current numerical value, storage automatically (by setting-up time storage continuously automatically at interval), single channel is tested and return the master menu options, clicks an options and promptly gets into selected sprite.Present embodiment maximum storage capacity under automatic store status is 1000 groups of data, can satisfy the follow-on test time greater than 10 hours.It is shown in figure 10 to click the sprite that gets into single channel test options, and the picture bottom is provided with printings, stores current numerical value, automatic storage, multiple channel test and return the master menu options.
Another selection is directly to get into wind pressure measurement sprite shown in figure 11 through preferential operating key " Pa " key, and differential pressure range is divided into fourth gear (0-1000; 0-2000; 0-4000; 0-8000), use " Range " function key switching range.The #1-#10 passage wind pressure value that this sprite shows respectively with " * * * " in scheming and excellent diagram form.The picture bottom is provided with printing, stores current numerical value, storage automatically (by setting-up time storage continuously automatically at interval), single channel is tested and return the master menu options, clicks an options and promptly gets into selected sprite.It is shown in figure 12 to click the sprite that gets into single channel test options, and the picture bottom is provided with printings, stores current numerical value, automatic storage, multiple channel test and return the master menu options.
In the embodiment system supervisor shown in Figure 6 shared routing modules such as printing, storage, communication, calculating are set also, in order to support the correlation function of each subroutine.
Claims (4)
1. portable multipath wind pressure and wind speed tester; Form by portable housing, LCD and keyboard special, single-chip microcomputer and system supervisor/data-carrier store thereof, little differential pressure sensor, data acquisition and processing unit; Portable surface of shell is provided with the blast sampling passage of respectively corresponding each air duct to be measured side by side; Each blast sampling passage is made up of malleation side interface and suction side interface respectively; Each passage is respectively equipped with little differential pressure sensor; The analog quantity output of each little differential pressure sensor is selected to join with A/D change-over circuit input end respectively via analog multichannel switch, and A/D change-over circuit output terminal and single-chip data inlet join, and single-chip microcomputer is provided with serial communication interface; It is characterized in that: said keyboard special is provided with the numerical key that comprises "+", "-" and ". " key; Also be provided be respectively applied for revise to key in that numeral, cursor move, data query record and hyperchannel measure the operating key that switches with single channel, also be provided with to be used for cancellation, to withdraw from or to confirm that operating key, keyboard special also are provided with menu key, blast range ability options button, get into wind pressure measurement interface control key and entering measuring wind speed interface control key.
2. tester according to claim 1; It is characterized in that: said cursor movement control key is made up of " ↑ ", " ↓ ", " ← ", " → ", " Home " and " End " key; Wherein " ↑ ", " ↓ ", " ← ", " → " key constitute compound keys with numerical key " 8 ", " 2 ", " 4 ", " 6 " respectively; " Home " key and numerical key " 7 " constitute compound keys; " End " key and numerical key " 1 " constitute compound keys, said cursor movement control key " ↑ ", " ↓ " respectively with multi-channel measurement wind speed or blast operating key and single channel measuring wind or blast operating key formation compound keys.
3. tester according to claim 1 is characterized in that: turn over operating key " PgUp " before the said page and constitute compound keys with numerical key " 9 ", turn over operating key " PgDn " key and numerical key " 3 " behind the page and constitute compound keys.
4. tester according to claim 1 is characterized in that: said entering wind pressure measurement interface control key is " Pa " key, and said entering measuring wind speed interface control key is " m/s " key, and " Pa " key is preferential operating key with " m/s " key.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100541276A CN101650244B (en) | 2008-08-14 | 2008-08-14 | Portable multipath wind pressure and wind speed tester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100541276A CN101650244B (en) | 2008-08-14 | 2008-08-14 | Portable multipath wind pressure and wind speed tester |
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| CN101650244A CN101650244A (en) | 2010-02-17 |
| CN101650244B true CN101650244B (en) | 2012-01-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876662B (en) | 2009-04-30 | 2012-06-13 | 深圳富泰宏精密工业有限公司 | Multifunctional portable electronic device |
| CN103983379A (en) * | 2014-04-11 | 2014-08-13 | 东莞市捷科自动化设备有限公司 | Multifunctional portable elastic force tester |
| CN106370215A (en) * | 2015-07-23 | 2017-02-01 | 上海天贺自动化仪表有限公司 | Multichannel digital transmission recorder |
| CN105403348B (en) * | 2015-10-29 | 2019-01-01 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | One kind may be programmed highly integrated multi-path pressure test device |
| CN106290971B (en) * | 2016-08-26 | 2020-04-03 | 东南大学 | Anemoscope measuring system |
| CN109612762B (en) * | 2019-01-16 | 2023-11-28 | 中铁第四勘察设计院集团有限公司 | Wind pressure test device suitable for tunnel protection door |
| CN110702307A (en) * | 2019-10-18 | 2020-01-17 | 成都凯天电子股份有限公司 | Method for testing pressure parameters of multi-channel sensor |
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| US6318181B1 (en) * | 1998-07-29 | 2001-11-20 | Smc Kabushiki Kaisha | Multi-channel pressure sensor controller |
| CN201247120Y (en) * | 2008-08-14 | 2009-05-27 | 天津市电力公司 | Multipath wind pressure and wind speed tester |
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- 2008-08-14 CN CN2008100541276A patent/CN101650244B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6318181B1 (en) * | 1998-07-29 | 2001-11-20 | Smc Kabushiki Kaisha | Multi-channel pressure sensor controller |
| CN2416506Y (en) * | 2000-04-19 | 2001-01-24 | 西安交通大学 | Differential pressure dynamic wind speed measuring apparatus |
| CN201247120Y (en) * | 2008-08-14 | 2009-05-27 | 天津市电力公司 | Multipath wind pressure and wind speed tester |
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Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121128 |
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Effective date of registration: 20121128 Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Patentee after: Tianjin Electric Power Corp. Patentee after: State Grid Corporation of China Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Patentee before: Tianjin Electric Power Corp. |