CN102565695A - Wind pressure switch tester and control method thereof - Google Patents
Wind pressure switch tester and control method thereof Download PDFInfo
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- CN102565695A CN102565695A CN201210004882XA CN201210004882A CN102565695A CN 102565695 A CN102565695 A CN 102565695A CN 201210004882X A CN201210004882X A CN 201210004882XA CN 201210004882 A CN201210004882 A CN 201210004882A CN 102565695 A CN102565695 A CN 102565695A
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- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012113 quantitative test Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
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- 238000003825 pressing Methods 0.000 description 1
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Abstract
The invention discloses a wind pressure switch tester and a control method thereof, wherein the tester comprises a wind pressure output port and a detection wiring port, a wind pressure switch is electrically connected with the detection wiring port, the wind pressure output port is connected with an air suction port and an air outlet of a fan through a positive and negative pressure switching mechanism, and the fan, the positive and negative pressure switching mechanism and the detection wiring port are respectively and electrically connected with a control circuit. The control method is that the wind pressure switch is connected between the wind pressure output port and the detection wiring port, and the wind pressure is generated to the wind pressure switch by the combination of the centrifugal fan and the positive and negative pressure switching mechanism; the differential pressure sensor detects the wind pressure generated by the wind pressure switch, and sends the detected signal to the single chip microcomputer after passing through the analog-to-digital converter, and the single chip microcomputer acquires the wind pressure signal and controls the constant voltage source to supply power to the centrifugal fan through the digital-to-analog converter, so that a closed-loop control system is formed; when the microswitch of the wind pressure switch is closed, the resistance value of the microswitch when the microswitch is closed is calculated by testing the voltage at two ends of the switch contact.
Description
Technical field
The present invention relates to a kind of tester, particularly a kind of blast switch tester and control method thereof, blast switch mainly is the blast switch that is used for domestic gas instantaneous water heater.
Background technology
In the current domestic gas-fired water heater industry; Often need blast switch, but because blast switch is generally purchased, the parameter of blast switch is provided by producer also from the producer of special manufacturing blast switch; The general less performance to blast switch of domestic gas-fired water heater industry is done further to detect; Even detect, also be in the laboratory, to test, and precision is low through complex apparatus.
Summary of the invention
The object of the invention aims to provide a kind of simple and reasonable, easy and simple to handle, measuring accuracy is high, the linearity good, temperature stability is good blast switch tester and control method thereof, to overcome weak point of the prior art.
A kind of blast switch tester by this purpose design; Comprise the blast delivery outlet and detect Wiring port; Blast switch is electrically connected with the detection Wiring port; Its architectural feature is that the blast delivery outlet links to each other with air outlet with the inlet scoop of blower fan through positive negative pressure throw-over gear, and blower fan, positive negative pressure throw-over gear and detection Wiring port are electrically connected with control circuit respectively.
Said control circuit also is electrically connected with man-machine interface.
Said man-machine interface comprises display screen and control panel; Display screen, control panel, blast delivery outlet and detection Wiring port are arranged on the cabinet surface of blast switch tester.
Said control circuit comprises CPU processor, constant pressure source and the elementary errors pressure transducer that detects blast delivery outlet blast; The CPU processor is a single-chip microcomputer, and single-chip microcomputer is electrically connected with elementary errors pressure transducer and blast switch through analog to digital converter, and single-chip microcomputer also is connected with the input end of constant pressure source through digital to analog converter, and the constant pressure source output terminal is electrically connected with blower fan.
Said analog to digital converter adopts 16 binary channels types, and wherein, a passage is electrically connected with the output terminal of elementary errors pressure transducer, and another passage is electrically connected with blast switch through detecting Wiring port.
Said blower fan is a centrifugal blower, and the inlet scoop of centrifugal blower is provided with first air-suction channel and second air-suction channel, and air outlet is provided with the first air-out passage and the second air-out passage; Positive negative pressure throw-over gear comprises two electromagnetic change-over valves, four two-way electromagnetic valves and three three-way pipes; First air-suction channel is through first two-way electromagnetic valve and atmosphere; The first air-out passage is connected with the i end of first three-way pipe; The j end of first three-way pipe is connected with the g end of first electromagnetic change-over valve, and the k end of first three-way pipe is communicated with the blast delivery outlet through the m end and the n end of second two-way electromagnetic valve, second three-way pipe successively; The second air-out passage is through the 3rd two-way electromagnetic valve and atmosphere; Second air-suction channel is connected with the p end of the 3rd three-way pipe; The q end of the 3rd three-way pipe is connected with the b end of second electromagnetic change-over valve, and the r end of the 3rd three-way pipe is communicated with the o end of second three-way pipe through the 3rd two-way electromagnetic valve; The h end of first electromagnetic change-over valve is connected with the positive pressure input port of atmosphere with the elementary errors pressure transducer respectively with the f end; The c end of second electromagnetic change-over valve is connected with the negative pressure input end of atmosphere and elementary errors pressure transducer respectively with a end.
The n end of said second three-way pipe also is communicated with the blast delivery outlet through the s end and the u end of the 4th three-way pipe; The t end of the 4th three-way pipe is through the 5th two-way electromagnetic valve and atmosphere.
Said first electromagnetic change-over valve and first two-way electromagnetic valve are connected in parallel; Second electromagnetic change-over valve and the 3rd two-way electromagnetic valve are connected in parallel.
A kind of control method of blast switch tester, its method characteristic are that blast switch is connected between blast delivery outlet and the detection Wiring port, utilize combining of centrifugal blower and positive negative pressure throw-over gear, and blast switch is produced wind pressure; The blast that elementary errors pressure transducer detection effect is produced in blast switch; And the signal that detects sent into single-chip microcomputer behind analog to digital converter; After single-chip microcomputer is gathered wind pressure signal, supply power to centrifugal blower through digital to analog converter control constant pressure source, thereby form a closed-loop control system; When the microswitch of blast switch is closed, calculate the resistance value of microswitch when closed through the voltage that tests out the switch contact two ends.
Said analog to digital converter adopts 16 binary channels types, and wherein, a passage is used for measuring the output of micro-pressure sensor, after the single-chip microcomputer inter-process, converts the digital quantity that can show to; Another passage is used for testing the terminal voltage when microswitch is closed on the blast switch, after the single-chip microcomputer inter-process, converts the closed resistance value of microswitch to.
When needs blast delivery outlet malleation is exported, the adhesive simultaneously of Single-chip Controlling first two-way electromagnetic valve, first electromagnetic change-over valve and second two-way electromagnetic valve, its g end is communicated with the f end during the first electromagnetic change-over valve adhesive.
When needs blast delivery outlet negative pressure is exported, the adhesive simultaneously of Single-chip Controlling the 3rd two-way electromagnetic valve, second electromagnetic change-over valve and the 4th two-port valve, its a end is communicated with the b end during the second electromagnetic change-over valve adhesive.
When needs blast delivery outlet no-output, Single-chip Controlling the 5th two-way electromagnetic valve adhesive.
The present invention has following beneficial effect:
This tester is applicable to the Performance Detection of burner series products with each model blast switch, blast parameter malleation and negative pressure value in the time of accurately detecting the blast switch action, contact resistance value, and subsidiary durability test.
Quantitative test: be fit to the laboratory and detect usefulness, the critical wind pressure value that instrument boosts automatically in the blast scope of setting, step-down captures the blast switch action rapidly.
Qualitative test: be fit to production line quick test usefulness, set the on-off action value of blast switch, the working value of judging blast switch fast whether in range of set value, thereby judge whether automatically qualified.
Durable test: export to blast switch, the life-span of analog detection blast switch by the closure of setting, the wind pressure value of disconnection.
Manual test, internal resistance test: but the output of manual adjustments wind pressure value, and instrument internal adopts close-loop control mode, can be stabilized in the parameter value of setting, uses when making things convenient for the development and Design product.And can detect the contact resistance of blast switch switch when closed, can use as a little resistance meter separately.
Blast output has manual mode and can be used as adjustable wind-pressing source and use separately.
This instrument has the internal resistance test function and can be used as the low-resistance tester and use separately.
Description of drawings
Fig. 1 is one embodiment of the invention structural representation.
Fig. 2 is positive negative pressure throw-over gear and blower fan syndeton synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Referring to Fig. 1 and Fig. 2; This blast switch tester; Comprise blast delivery outlet 3 and detect Wiring port 4; Blast switch is electrically connected with detecting Wiring port, and the blast delivery outlet links to each other with air outlet 6.1 with the inlet scoop 6.2 of blower fan through positive negative pressure throw-over gear, and blower fan, positive negative pressure throw-over gear and detection Wiring port are electrically connected with control circuit respectively.
Control circuit also is electrically connected with man-machine interface.Man-machine interface comprises display screen 2 and control panel 5; Display screen, control panel, blast delivery outlet 3 and detection Wiring port 4 are arranged on cabinet 1 surface of blast switch tester.
Control circuit comprises CPU processor, constant pressure source and the elementary errors pressure transducer 8 that detects blast delivery outlet blast; The CPU processor is a single-chip microcomputer, and single-chip microcomputer is electrically connected with elementary errors pressure transducer and blast switch through analog to digital converter, and single-chip microcomputer also is connected with the input end of constant pressure source through digital to analog converter, and the constant pressure source output terminal is electrically connected with blower fan.
Said analog to digital converter adopts 16 binary channels types, and wherein, a passage is electrically connected with the output terminal of elementary errors pressure transducer, and another passage is electrically connected with blast switch through detecting Wiring port.
Blower fan is a centrifugal blower 6, and the inlet scoop 6.2 of centrifugal blower is provided with first air-suction channel 19 and second air-suction channel 22, and air outlet 6.1 is provided with the first air-out passage 20 and the second air-out passage 21; Positive negative pressure throw-over gear comprises two electromagnetic change-over valves, four two-way electromagnetic valves and three three-way pipes.First air-suction channel 19 is through first two-way electromagnetic valve 10 and the atmosphere; The first air-out passage 20 is connected with the i end of first three-way pipe 15; The j of first three-way pipe end is connected with the g end of first electromagnetic change-over valve 7, and the k end of first three-way pipe m through second two-way electromagnetic valve 11, second three-way pipe 16 is successively held and n holds and is communicated with blast delivery outlet 3.The second air-out passage 21 is through the 3rd two-way electromagnetic valve 12 and atmosphere; Second air-suction channel 22 is connected with the p end of the 3rd three-way pipe 17; The q end of the 3rd three-way pipe is connected with the b end of second electromagnetic change-over valve 9, and the r end of the 3rd three-way pipe is communicated with the o end of second three-way pipe 16 through the 4th two-way electromagnetic valve 13.The h end of first electromagnetic change-over valve 7 is connected with the positive pressure input port 8.1 of atmosphere and elementary errors pressure transducer 8 respectively with the f end; The c end of second electromagnetic change-over valve 9 is connected with the negative pressure input end 8.2 of atmosphere and elementary errors pressure transducer respectively with a end.
The n end of second three-way pipe 16 also is communicated with blast delivery outlet 3 through the s end and the u end of the 4th three-way pipe 18; The t end of the 4th three-way pipe is through the 5th two-way electromagnetic valve 14 and atmosphere.
First electromagnetic change-over valve 7 and first two-way electromagnetic valve 10 are connected in parallel; Second electromagnetic change-over valve 9 and the 3rd two-way electromagnetic valve 12 are connected in parallel.
Above-mentioned blast switch tester has several of qualitative tests, quantitative test, durable test, resistance calibration, pressure calibration.Several parts of pressure calibration part; The clear 0 magnitude of voltage respective value that force value and constant pressure source need be exported with force value calibration is done a form and is existed among the EEPROM, can accelerate the stabilized speed of air pressure like this, for example; When 50Pa air pressure is exported in the form; Export the voltage of 11.0V and supply with blower fan, change the closed loop of " adjustment of air pressure detection-CPU processing-constant voltage " then over to, so just can adjust to the atmospheric pressure value that needs very soon at once.Because of the aging perhaps variation of external condition of instrument internal device, can rerun the primary calibration program after a while.
Above-mentioned blast switch tester can be set malleation output or negative pressure output, the positive pressure input port of respective detection blast switch or negative pressure input end; Can judge automatically/detect and often open or dissimilar blast switchs such as normally closed; The internal resistance value of microswitch in the time of can testing the microswitch closing of contact on the blast switch, test specification: 0～500m Ω, precision: 0.05 grade; Can do durability test, test rate can be set for 1～20 time/minute, and the testing total number of times can be set for 0-999999 time, during test on the blast switch microswitch power supply that two ends add be the 0.1A constant current.
A kind of control method of blast switch tester is connected in blast switch between blast delivery outlet 3 and the detection Wiring port 4, utilizes combining of centrifugal blower 6 and positive negative pressure throw-over gear, and blast switch is produced wind pressure; The blast that elementary errors pressure transducer 8 detection effect are produced in blast switch; And the signal that detects sent into single-chip microcomputer behind analog to digital converter; After single-chip microcomputer is gathered wind pressure signal, supply power to centrifugal blower through digital to analog converter control constant pressure source, thereby form a closed-loop control system; When the microswitch of blast switch is closed, calculate the resistance value of microswitch when closed through the voltage that tests out the switch contact two ends.
Analog to digital converter adopts 16 binary channels types, and wherein, a passage is used for measuring the output of micro-pressure sensor 8, after the single-chip microcomputer inter-process, converts the digital quantity that can show to; Another passage is used for testing the terminal voltage when microswitch is closed on the blast switch, after the single-chip microcomputer inter-process, converts the closed resistance value of microswitch to.
When needs blast delivery outlet 3 malleations are exported, Single-chip Controlling first two-way electromagnetic valve 10, first electromagnetic change-over valve 7 and 11 adhesives simultaneously of second two-way electromagnetic valve, its g end is held with f and is communicated with during the first electromagnetic change-over valve adhesive.
When needs blast delivery outlet 3 negative pressure are exported, Single-chip Controlling the 3rd two-way electromagnetic valve 12, second electromagnetic change-over valve 9 and 13 adhesives simultaneously of the 4th two-port valve, its a end is held with b and is communicated with during the second electromagnetic change-over valve adhesive.
When needs blast delivery outlet 3 no-outputs, 14 adhesives of Single-chip Controlling the 5th two-way electromagnetic valve.
Claims (10)
1. blast switch tester; Comprise blast delivery outlet (3) and detect Wiring port (4); Blast switch is electrically connected with the detection Wiring port; It is characterized in that the blast delivery outlet links to each other with air outlet (6.1) with the inlet scoop (6.2) of blower fan through positive negative pressure throw-over gear, blower fan, positive negative pressure throw-over gear and detection Wiring port are electrically connected with control circuit respectively.
2. according to the said blast switch tester of claim 1, it is characterized in that said control circuit also is electrically connected with man-machine interface.
3. according to the said blast switch tester of claim 2, it is characterized in that said man-machine interface comprises display screen (2) and control panel (5); Display screen, control panel, blast delivery outlet (3) and detection Wiring port (4) are arranged on cabinet (1) surface of blast switch tester.
4. according to the said blast switch tester of claim 3, it is characterized in that said control circuit comprises CPU processor, analog to digital converter, digital to analog converter, constant pressure source and the elementary errors pressure transducer (8) that detects blast delivery outlet blast; The CPU processor is a single-chip microcomputer, and single-chip microcomputer is electrically connected with elementary errors pressure transducer and blast switch through analog to digital converter, and single-chip microcomputer also is connected with the input end of constant pressure source through digital to analog converter, and the constant pressure source output terminal is electrically connected with blower fan.
5. according to the said blast switch tester of claim 4; It is characterized in that said analog to digital converter adopts 16 binary channels types; Wherein, a passage is electrically connected with the output terminal of elementary errors pressure transducer (8), and another passage is electrically connected with blast switch through detecting Wiring port (4).
6. according to the said blast switch tester of claim 5; It is characterized in that said blower fan is centrifugal blower (6); The inlet scoop of centrifugal blower (6.2) is provided with first air-suction channel (19) and second air-suction channel (22), and air outlet (6.1) is provided with the first air-out passage (20) and the second air-out passage (21); Positive negative pressure throw-over gear comprises two electromagnetic change-over valves, four two-way electromagnetic valves and three three-way pipes;
First air-suction channel (19) is through first two-way electromagnetic valve (10) and atmosphere; The first air-out passage (20) is connected with the i end of first three-way pipe (15); The j end of first three-way pipe is connected with the g end of first electromagnetic change-over valve (7), and the k end of first three-way pipe is communicated with blast delivery outlet (3) through the m end and the n end of second two-way electromagnetic valve (11), second three-way pipe (16) successively;
The second air-out passage (21) is through the 3rd two-way electromagnetic valve (12) and atmosphere; Second air-suction channel (22) is connected with the p end of the 3rd three-way pipe (17); The q end of the 3rd three-way pipe is connected with the b end of second electromagnetic change-over valve (9), and the r end of the 3rd three-way pipe is communicated with the o end of second three-way pipe (16) through the 4th two-way electromagnetic valve (13);
The h end of first electromagnetic change-over valve (7) is connected with the positive pressure input port (8.1) of atmosphere and elementary errors pressure transducer (8) respectively with the f end; The c end of second electromagnetic change-over valve (9) is connected with the negative pressure input end (8.2) of atmosphere and elementary errors pressure transducer respectively with a end.
7. according to the said blast switch tester of claim 6, it is characterized in that the n end of said second three-way pipe (16) also is communicated with blast delivery outlet (3) through the s end and the u end of the 4th three-way pipe (18); The t end of the 4th three-way pipe is through the 5th two-way electromagnetic valve (14) and atmosphere.
8. according to the said blast switch tester of claim 7, it is characterized in that said first electromagnetic change-over valve (7) and first two-way electromagnetic valve (10) are connected in parallel; Second electromagnetic change-over valve (9) is connected in parallel with the 3rd two-way electromagnetic valve (12).
9. the control method of said according to Claim 8 blast switch tester; It is characterized in that blast switch is connected between blast delivery outlet (3) and the detection Wiring port (4); Utilize combining of centrifugal blower (6) and positive negative pressure throw-over gear, blast switch is produced wind pressure; The blast that elementary errors pressure transducer (8) detection effect is produced in blast switch; And the signal that detects sent into single-chip microcomputer behind analog to digital converter; After single-chip microcomputer is gathered wind pressure signal, supply power to centrifugal blower through digital to analog converter control constant pressure source, thereby form a closed-loop control system; When the microswitch of blast switch is closed, calculate the resistance value of microswitch when closed through the voltage that tests out the switch contact two ends.
10. according to the control method of the said blast switch tester of claim 9; It is characterized in that analog to digital converter adopts 16 binary channels types, wherein, a passage is used for measuring the output of micro-pressure sensor (8); After the single-chip microcomputer inter-process, convert the digital quantity that can show to; Another passage is used for testing the terminal voltage when microswitch is closed on the blast switch, after the single-chip microcomputer inter-process, converts the closed resistance value of microswitch to;
When needs blast delivery outlet (3) malleation is exported, the adhesive simultaneously of Single-chip Controlling first two-way electromagnetic valve (10), first electromagnetic change-over valve (7) and second two-way electromagnetic valve (11), its g end is communicated with the f end during the first electromagnetic change-over valve adhesive;
When needs blast delivery outlet (3) negative pressure is exported, the adhesive simultaneously of Single-chip Controlling the 3rd two-way electromagnetic valve (12), second electromagnetic change-over valve (9) and the 4th two-port valve (13), its a end is communicated with the b end during the second electromagnetic change-over valve adhesive;
When needs blast delivery outlet (3) no-output, Single-chip Controlling the 5th two-way electromagnetic valve (14) adhesive.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210004882.XA CN102565695B (en) | 2012-01-06 | 2012-01-06 | Wind pressure switch tester and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210004882.XA CN102565695B (en) | 2012-01-06 | 2012-01-06 | Wind pressure switch tester and control method thereof |
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| CN102565695A true CN102565695A (en) | 2012-07-11 |
| CN102565695B CN102565695B (en) | 2015-06-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093101A (en) * | 2015-06-26 | 2015-11-25 | 威能(无锡)供热设备有限公司 | Wind pressure switch testing device |
| CN105421589A (en) * | 2015-12-15 | 2016-03-23 | 重庆交通大学 | House applied to in-site measuring study of wind pressure of roof of low-rise building |
| CN106093767A (en) * | 2016-06-16 | 2016-11-09 | 中山市优胜电子科技有限公司 | A kind of blast switch ability meter and method of testing |
| CN110057532A (en) * | 2019-05-08 | 2019-07-26 | 重庆交通大学 | Automatic drainage system and wind pressure test system applied to wind load actual measurement house |
| CN110335778A (en) * | 2019-07-02 | 2019-10-15 | 浙江华地电子有限公司 | A kind of blast switch having contact self-cleaning function |
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| CN202018498U (en) * | 2011-01-30 | 2011-10-26 | 凯迈（江苏）机电有限公司 | Air-pressure switch-detection testing device |
| CN202066945U (en) * | 2011-03-31 | 2011-12-07 | 上海天惠汽车零部件有限公司 | Pressure switch testboard for automotive air conditioners |
| CN202404213U (en) * | 2012-01-06 | 2012-08-29 | 中山市铧禧电子科技有限公司 | Wind pressure switch tester |
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2012
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| US6170316B1 (en) * | 1999-04-21 | 2001-01-09 | Clinton L. Aldrich | Pressure and vacuum switch testing tool |
| CN202018498U (en) * | 2011-01-30 | 2011-10-26 | 凯迈（江苏）机电有限公司 | Air-pressure switch-detection testing device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093101A (en) * | 2015-06-26 | 2015-11-25 | 威能(无锡)供热设备有限公司 | Wind pressure switch testing device |
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| CN105421589A (en) * | 2015-12-15 | 2016-03-23 | 重庆交通大学 | House applied to in-site measuring study of wind pressure of roof of low-rise building |
| CN106093767A (en) * | 2016-06-16 | 2016-11-09 | 中山市优胜电子科技有限公司 | A kind of blast switch ability meter and method of testing |
| CN110057532A (en) * | 2019-05-08 | 2019-07-26 | 重庆交通大学 | Automatic drainage system and wind pressure test system applied to wind load actual measurement house |
| CN110335778A (en) * | 2019-07-02 | 2019-10-15 | 浙江华地电子有限公司 | A kind of blast switch having contact self-cleaning function |
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|---|---|
| CN102565695B (en) | 2015-06-10 |
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Denomination of invention: Wind pressure switch testing instrument and control method thereof Effective date of registration: 20161221 Granted publication date: 20150610 Pledgee: Bank of China Limited by Share Ltd Zhongshan branch Pledgor: Zhongshan Huaxi Electronic Technology Co.,Ltd. Registration number: 2016440000033 |
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Date of cancellation: 20220427 Granted publication date: 20150610 Pledgee: Bank of China Limited by Share Ltd. Zhongshan branch Pledgor: ZHONGSHAN HUAXI ELECTRONICS TECHNOLOGY CO.,LTD. Registration number: 2016440000033 |
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