CN205333247U - Manometer and sensor test bench - Google Patents
Manometer and sensor test bench Download PDFInfo
- Publication number
- CN205333247U CN205333247U CN201620022805.0U CN201620022805U CN205333247U CN 205333247 U CN205333247 U CN 205333247U CN 201620022805 U CN201620022805 U CN 201620022805U CN 205333247 U CN205333247 U CN 205333247U
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- Prior art keywords
- soon
- pressure
- trickle charge
- pipeline
- adjustment valve
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Abstract
The utility model discloses a manometer and sensor test bench, to aim at providing one kind provide the preset and accurate manometer and sensor test bench who adjusts of atmospheric pressure of being convenient for, has solved the preset inaccuracy of pressure, not quick problem, and its technical scheme main points are including the pressure source, are used for the installation to wait to examine the measuring platform of manometer, it fills pipeline and trickle charge pipeline soon to be connected with between pressure source and the detection platform, fill soon to be equipped with on the pipeline and fill the governing valve soon, be equipped with the trickle charge governing valve on the trickle charge pipeline, it still is equipped with the accurate pressure sensor who is used for indicateing standard atmospheric pressure to detect the bench, accurate pressure sensor is connected with control circuit, control circuit is used for control and fills opening and close of governing valve and trickle charge governing valve soon, wherein, controls through control circuit control when atmospheric pressure is close to the standard air pressure and fills the governing valve soon and close and open the trickle charge governing valve, has reached to have kept balance efficiency and the accuracy of simulating the atmospheric pressure environment to the simple operation.
Description
Technical field
This utility model relates to test bench installation, more specifically, it relates to the Pressure gauge of detected air pressure and biosensor assay platform。
Background technology
Pressure gauge and biosensor assay platform equipment are specifically for test Pressure gauge or are called some equipment of pressure transducer and produced, pressure transducer needs to carry out test and the adjustment of degree of accuracy in the process produced, it is thus desirable to a test bench installation is the different air pressure environment that its simulation is easy to control, if but provide test air pressure environment either directly through pressure source, there is pressure and give coarse problem, affect the result of the test of Pressure gauge or sensor, so the given needs of air pressure for pressure source improve。
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is in that: provides and is easy to air pressure Pressure gauge that is given and that accurately regulate and biosensor assay platform。
Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of Pressure gauge and biosensor assay platform, including pressure source, for installing manometric monitor station to be checked, it is connected between described pressure source and monitor station and fills pipeline and trickle charge pipeline soon, the described pipeline that fills soon is provided with and fills adjustment valve soon, described trickle charge pipeline is provided with trickle charge and regulates valve, described monitor station is additionally provided with to indicate the precision pressure sensor of standard pressure, described precision pressure sensor is connected to control circuit, described control circuit is in order to control the keying filling adjustment valve and trickle charge adjustment valve soon, wherein, control to fill adjustment valve soon when air pressure is near the mark air pressure by control circuit and close and open trickle charge adjustment valve。
By above-mentioned setting, pressure source is mainly micro-air compressor, compression air is provided, it is transferred to monitor station for Simulated gas pressure ring border, detected Pressure gauge is arranged on monitor station and detects, and precision pressure sensor can provide the touchstone of test data, detected manometric numerical value and the numerical value of precision pressure sensor are within the scope that error allows, then this Pressure gauge is qualified products, otherwise need again to debug, in order to quickly and accurately reach the test point of air pressure, therefore can open when starting simulation and fill adjustment valve soon, air pressure is made to arrive monitor station quickly through filling pipeline soon, at the air pressure that is near the mark soon, during the air pressure of namely test point, adjustment valve can be filled soon close and fill pipeline soon by closing, and by control circuit control, trickle charge adjustment valve is opened while adjustment valve cuts out by filling soon, such that it is able to carry out accurately approaching of air pressure by trickle charge pipeline, thus realizing the given and accurate adjustment of quick air pressure。
Can be preferably as concrete scheme of the present utility model: described control circuit includes, in order to precision pressure sensor signal and threshold signal to be compared the comparing unit of output low and high level,
Receive the driver element of the low and high level of comparing unit and controlled on or off,
Described driver element is also in order to switch trickle charge adjustment valve and to fill the keying regulating valve soon。
By above-mentioned setting, by comparing unit, circuit signal is carried out logical judgment process, such that it is able to realize the judgement of simple level, and control driver element with this, driver element is adopted to go to drive trickle charge regulate valve and fill adjustment valve soon, the driving force remained stable for, circuit Comparision is stable。
Can be preferably as concrete scheme of the present utility model: described comparing unit includes comparator and improves the potentiometer of threshold signal for comparator, and described potentiometer is connected to power supply。
By above-mentioned setting, potentiometer is adopted to realize the adjustment of threshold signal voltage, by changing the resistance of potentiometer, thus the level on the adjustable side of potentiometer is also changed, by changing the level of different threshold signals, it is possible to control benchmark, it is easy to test operation, more hommization。
Can be preferably as concrete scheme of the present utility model: described driver element includes switching tube and relay, described switching tube is connected with the outfan of comparator and controls the electric power loop of relay, described relay has normally opened contact and normally-closed contact, described normally-closed contact is series at and fills the current supply circuit regulating valve soon, and described normally opened contact is series at trickle charge and regulates the current supply circuit of valve。
By above-mentioned setting, the double-contact that relay adopts, one normally closed, one normally opened, such that it is able to action simultaneously, reach the effect of complementary switching, controlled the coil of relay by driver element, it is possible to manipulate two switch simultaneously, and it is possible to all only one of which switch is in closure state in the work process made。
Can be preferably as concrete scheme of the present utility model: described filling soon is in series with master switch on the power supply main line regulating valve and trickle charge adjustment valve。
By above-mentioned setting, arranging master switch is the generation in order to prevent emergency, in time there is emergency episode, master switch can be pressed, thus loop of cutting off the electricity supply, it is prevented that the generation of electrical fire, effectively prevent the expansion of equipment fault simultaneously, play the effect of jerk。
Can be preferably as concrete scheme of the present utility model: being also coupled to enumerator on the current supply circuit of described relay, described enumerator is in order to integrating relay action frequency。
By above-mentioned setting, adopt enumerator that the action frequency of relay is counted, can effectively judge the life-span of relay, circuit is brought fault by the overload operation preventing relay, when relay life-span near time just directly can know from count results, it is possible to this relay is replaced。
Can be preferably as concrete scheme of the present utility model: described master switch is magnetic switch or press button。
By above-mentioned setting, master switch adopts magnetic switch simple operation and non-contact type, and service life is longer, and adopts push-button switch structure ratio stronger, and stability is better。
Can be preferably as concrete scheme of the present utility model: the delivery outlet of described pressure source is connected to filter。
By above-mentioned setting, the process of dry filter can be played for the air in pipeline, such that it is able to improve overall service life。
In sum, this utility model has the advantages that the Efficiency and accuracy improving Simulated gas pressure ring border, simple operation, testing stand longer service life。
Accompanying drawing explanation
Fig. 1 is the pneumatic circuit structure principle chart of the present embodiment；
Fig. 2 is control circuit schematic diagram；
Fig. 3 is the difference partial circuit schematic diagram of control circuit embodiment two；
Fig. 4 is the difference partial circuit schematic diagram of control circuit embodiment three。
In figure 1, pressure source；2, monitor station；3, pipeline is filled soon；4, trickle charge pipeline；5, adjustment valve is filled soon；6, trickle charge regulates valve；7, precision pressure sensor；8, enumerator；9, filter；A, control circuit；A1, comparing unit；LM1, comparator；Rp, potentiometer；A2, driver element；Q1, switching tube；K1, relay；K1-1, normally-closed contact；K1-2, normally opened contact；SB, press button；K2, magnetic switch。
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail。
The pipeline structure of embodiment 1:(testing stand), as shown in Figure 1, Pressure gauge and biosensor assay platform include pressure source 1, for installing manometric monitor station 2 to be checked, it is connected between described pressure source 1 and monitor station 2 and fills pipeline 3 and trickle charge pipeline 4 soon, described fill soon pipeline 3 be provided with fill soon adjustment valve 5, described trickle charge pipeline 4 is provided with trickle charge and regulates valve 6, described monitor station 2 is additionally provided with to indicate the precision pressure sensor 7 of standard pressure, described precision pressure sensor 7 is connected to control circuit A, described control circuit A is in order to control the keying filling adjustment valve 5 and trickle charge adjustment valve 6 soon, wherein, control to fill adjustment valve 5 soon when air pressure is near the mark air pressure by control circuit A and close and open trickle charge adjustment valve 6。Standard pressure is the pressure point needing detection, for being examined, the pressure spot that can be arranged close to test point 0.1MPa in control circuit is base pressure force, such as: be 1MPa by cautious air pressure, then can arranging detection threshold value in 1MPa, can be base pressure force for 0.9MPa, namely by fill soon regulate valve 5 be switched to trickle charge regulate valve 6 pressure spot。The delivery outlet of pressure source 1 is connected to filter 9。Filter 9 can play the process of dry filter for the air in pipeline, such that it is able to improve overall service life。Pressure source 1 adopts micro-air compressor, and maximum gas pressure is 1.8MPa。After pressure source 1 provides air, filter through filter 9, produce the air of clean dry。When air pressure is not up to the special survey point of tested table (rear title is examined), fills adjustment valve 5 soon and open, carry out fast aeration, when arriving near being examined, use trickle charge fine setting instead。Trickle charge fine setting adopts trickle charge to regulate valve 6 and trickle charge pipeline 4, and trickle charge pipeline 4 is capillary throttle pipe, and pressure production process so can be made relatively steady, and pressure is easily controlled, and is not likely to produce pressure fluctuation。
Work process is: pressure source 1 provides compression air, it is transferred to monitor station 2 for Simulated gas pressure ring border, detected Pressure gauge is arranged on monitor station 2 and detects, and precision pressure sensor 7 can provide the touchstone of test data, detected manometric numerical value and the numerical value of precision pressure sensor 7 are within the scope that error allows, then this Pressure gauge is qualified products, otherwise need again to debug, in order to quickly and accurately reach the test point of air pressure, therefore can open when starting simulation and fill adjustment valve 5 soon, air pressure is made to arrive monitor station 2 quickly through filling pipeline 3 soon, at the air pressure that is near the mark soon, during the air pressure of namely test point, adjustment valve 5 can be filled soon close and fill pipeline 3 soon by closing, and controlled by control circuit A, trickle charge adjustment valve 6 is opened while adjustment valve 5 cuts out by filling soon, such that it is able to carry out accurately approaching of air pressure by trickle charge pipeline 4, thus realizing the given and accurate adjustment of quick air pressure。
In order to control circuit A is expanded on further, as in figure 2 it is shown, filling adjustment valve 5 soon with trickle charge adjustment valve 6 can be electromagnetic valve, controls it by the break-make of power supply and be turned on and off。Control circuit A includes, in order to precision pressure sensor 7 signal and threshold signal to be compared the comparing unit A1 of output low and high level, receive the low and high level of comparing unit A1 and the driver element A2, described driver element A2 of controlled on or off also regulate valve 6 and fill the keying of adjustment valve 5 soon in order to switching trickle charge。Comparing unit A1 includes comparator LM1 and improves the potentiometer Rp of threshold signal for comparator LM1, and described potentiometer Rp is connected to power supply。Described driver element A2 includes switching tube Q1 and relay K 1, the outfan of described switching tube Q1 and comparator LM1 is connected and controls the electric power loop of relay K 1, described relay K 1 has normally opened contact K1-2 and normally-closed contact K1-1, described normally-closed contact K1-1 is series at and fills the current supply circuit regulating valve 5 soon, and described normally opened contact K1-2 is series at trickle charge and regulates the current supply circuit of valve 6。Fill soon and the power supply main line regulating valve 5 and trickle charge adjustment valve 6 is in series with master switch。
The current supply circuit of relay K 1 is also in series with display lamp LD。The inverting input of comparator LM1LM1 receives the threshold voltage signal Vref1 of potentiometer RpRp1 output, and the voltage of the analogue signal of precision pressure sensor 7 output is if greater than threshold voltage signal Vref1, then export high level, otherwise output low level, in time exporting high level, NPN triode ON will be made, what present embodiment breaker in middle pipe Q1Q1 adopted is NPN audion, NMOS tube can certainly be adopted to replace, it is electric that NPN triode operation makes the coil of relay K 1 obtain when conducting state, Guan Bi normally opened contact K1-2, disconnect normally-closed contact K1-1。
By above-mentioned setting, by comparing unit A1, circuit signal is carried out logical judgment process, such that it is able to realize the judgement of simple level, and control driver element A2 with this, driver element A2 is adopted to go to drive trickle charge regulate valve 6 and fill adjustment valve 5 soon, the driving force remained stable for, circuit Comparision is stable。Potentiometer Rp is adopted to realize the adjustment of threshold signal voltage, by changing the resistance of potentiometer Rp, thus the level on the adjustable side of potentiometer Rp is also changed, by changing the level of different threshold signals, benchmark can be controlled, it is simple to test operation, more hommization。The double-contact that relay K 1 adopts, one normally closed, one normally opened, such that it is able to action simultaneously, reach the effect of complementary switching, the coil of relay K 1 is controlled by driver element A2, two switch can be manipulated, and it is possible to all only one of which switch is in closure state in the work process made simultaneously。Arranging master switch is the generation in order to prevent emergency, in time there is emergency episode, it is possible to master switch is pressed, thus loop of cutting off the electricity supply, it is prevented that the generation of electrical fire, effectively prevent the expansion of equipment fault simultaneously, play the effect of jerk。
Embodiment 2, as described in Figure 3, in order to provide detect the service life of equipment, the current supply circuit of relay K 1 has been also coupled to enumerator 8, and described enumerator 8 is in order to integrating relay K1 action frequency。Adopt enumerator 8 that the action frequency of relay K 1 is counted, can effectively judge the life-span of relay K 1, circuit is brought fault by the overload operation preventing relay K 1, when relay K 1 life-span near time just directly can know from count results, it is possible to this relay K 1 is replaced。
With embodiment 1, embodiment 3, as shown in Figure 4, is distinctive in that master switch is magnetic switch K2。Master switch adopts magnetic switch K2 simple operation and non-contact type, and service life is longer, and adopts press button SB structure comparison firm, and stability is better。
That test bench installation is mainly used in measuring pressure transducer and various electric pressure meter and combine verification。200,400,600,800,1000,1600,1800 pointer pressure meter calibrations can be met；And single school that pressure transducer output signal is 0-10V, 0-5V, 0-20mA, 4-20mA imbalance value, accuracy, the linearity。Testing stand has effect simple to operate, that test is quickly accurate, easy to maintenance, safe and reliable。
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification, but as long as being affected by the protection of Patent Law in right of the present utility model。
Claims (8)
1. a Pressure gauge and biosensor assay platform, including pressure source (1), for installing manometric monitor station (2) to be checked, it is characterized in that: be connected between described pressure source (1) and monitor station (2) and fill pipeline (3) and trickle charge pipeline (4) soon, described fill soon pipeline (3) be provided with fill soon adjustment valve (5), described trickle charge pipeline (4) is provided with trickle charge and regulates valve (6), described monitor station (2) is additionally provided with to indicate the precision pressure sensor (7) of standard pressure, described precision pressure sensor (7) is connected to control circuit (A), described control circuit (A) is in order to control the keying filling adjustment valve (5) and trickle charge adjustment valve (6) soon, wherein, control to fill adjustment valve (5) soon when air pressure is near the mark air pressure by control circuit (A) and close and open trickle charge adjustment valve (6)。
2. Pressure gauge according to claim 1 and biosensor assay platform, it is characterized in that: described control circuit (A) includes, in order to precision pressure sensor (7) signal and threshold signal to be compared the comparing unit (A1) of output low and high level
Receive the low and high level of comparing unit (A1) and the driver element (A2) of controlled on or off,
Described driver element (A2) is also in order to switch trickle charge adjustment valve (6) and to fill the keying regulating valve (5) soon。
3. Pressure gauge according to claim 2 and biosensor assay platform, it is characterized in that: described comparing unit (A1) includes comparator (LM1) and improves the potentiometer (Rp) of threshold signal for comparator (LM1), and described potentiometer (Rp) is connected to power supply。
4. Pressure gauge according to claim 3 and biosensor assay platform, it is characterized in that: described driver element (A2) includes switching tube (Q1) and relay (K1), described switching tube (Q1) is connected with the outfan of comparator (LM1) and controls the electric power loop of relay (K1), described relay (K1) has normally opened contact (K1-2) and normally-closed contact (K1-1), described normally-closed contact (K1-1) is series at and fills the current supply circuit regulating valve (5) soon, described normally opened contact (K1-2) is series at trickle charge and regulates the current supply circuit of valve (6)。
5. Pressure gauge according to claim 4 and biosensor assay platform, it is characterised in that: described filling soon on the power supply main line regulating valve (5) and trickle charge adjustment valve (6) is in series with master switch。
6. Pressure gauge according to claim 4 and biosensor assay platform, it is characterized in that: being also coupled to enumerator (8) on the current supply circuit of described relay (K1), described enumerator (8) is in order to integrating relay (K1) action frequency。
7. Pressure gauge according to claim 5 and biosensor assay platform, it is characterised in that: described master switch is magnetic switch (K2) or press button (SB)。
8. Pressure gauge according to claim 1 and biosensor assay platform, it is characterised in that: the delivery outlet of described pressure source (1) is connected to filter (9)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620022805.0U CN205333247U (en) | 2016-01-12 | 2016-01-12 | Manometer and sensor test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620022805.0U CN205333247U (en) | 2016-01-12 | 2016-01-12 | Manometer and sensor test bench |
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| Publication Number | Publication Date |
|---|---|
| CN205333247U true CN205333247U (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620022805.0U Expired - Fee Related CN205333247U (en) | 2016-01-12 | 2016-01-12 | Manometer and sensor test bench |
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| Country | Link |
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| CN (1) | CN205333247U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860510A (en) * | 2017-11-07 | 2018-03-30 | 中航（重庆）微电子有限公司 | A kind of calibration method of pressure sensor |
| CN108088619A (en) * | 2017-12-22 | 2018-05-29 | 北京航天计量测试技术研究所 | A kind of real-time dynamic pressure measurement and closed-loop feedback control system |
| CN110440983A (en) * | 2019-09-16 | 2019-11-12 | 大唐半导体科技有限公司 | A kind of control method for fully automatic for the calibration of air compressor machine sensor parameters |
-
2016
- 2016-01-12 CN CN201620022805.0U patent/CN205333247U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860510A (en) * | 2017-11-07 | 2018-03-30 | 中航（重庆）微电子有限公司 | A kind of calibration method of pressure sensor |
| CN108088619A (en) * | 2017-12-22 | 2018-05-29 | 北京航天计量测试技术研究所 | A kind of real-time dynamic pressure measurement and closed-loop feedback control system |
| CN110440983A (en) * | 2019-09-16 | 2019-11-12 | 大唐半导体科技有限公司 | A kind of control method for fully automatic for the calibration of air compressor machine sensor parameters |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20180112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |