CN102628699A - Data collecting device for micro tester - Google Patents
Data collecting device for micro tester Download PDFInfo
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- CN102628699A CN102628699A CN2012101293405A CN201210129340A CN102628699A CN 102628699 A CN102628699 A CN 102628699A CN 2012101293405 A CN2012101293405 A CN 2012101293405A CN 201210129340 A CN201210129340 A CN 201210129340A CN 102628699 A CN102628699 A CN 102628699A
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- 238000013480 data collection Methods 0.000 abstract 1
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Abstract
The invention discloses a data collecting device for a micro tester. The data collecting device comprises a PXI (PCI extensions for instrumentation) system, a switch converting circuit, an oven, a pressure controller, and a controller/host. The PXI system consists of a single-pole single-throw switch, a single-pole double-throw switch, a matrix switch, a digital multi-meter, a digital converter and a plurality of system expansion interfaces; and a sensor adapter and a sensor are arranged in the oven. The PXI system is connected with the switch converting circuit through a cable; the switch converting circuit is connected with the sensor adapter in the oven through the cable; the sensor in the oven is connected with the pressure controller; the controller/host is respectively connected with the PXI system, the switch converting circuit, the oven, the sensor in the oven, a power supply source and the pressure controller. The sensor is calibrated and corrected by using the data collecting device provided by the invention with high efficiency, so as to meet the requirement of mass production. The data collecting device provided by the invention is applicable to data collection when a sensor precision test is carried out.
Description
Technical field
The present invention relates to a kind of data collector.Data acquisition system (DAS) when specifically, being the sensor accuracy test.
Background technology
Know all that at electronic applications along with the continuous development of science and technology, the kind of sensor was many more originally, application also more and more widely, like automobile, engineering machinery, aviation, medical electronics etc.And these fields are high to the accuracy requirement of sensor, must when automobile has an accident, can in time detect like vehicle acceleration sensor, and open the personal safety that air bag guarantees the driver immediately.Therefore, sensor must be calibrated, revise before dropping into application, made its output signal and desirable output signal approaching more good more.
At present, to calibration, the modification method of sensor, can only singlely carry out, can not realize batch calibration, correction to sensor, make the alignment time long, efficient is extremely low, is difficult to satisfy requirements of large-scale production.
Summary of the invention
The problem that the present invention will solve provides a kind of little tester data collector.Adopt this little tester data collector that sensor is calibrated, revised, efficient is high, can satisfy requirements of large-scale production.
For addressing the above problem, take following technical scheme:
Little tester data collector of the present invention comprises PXI system, switch switching circuit, baking oven, pressure controller, controller/main frame; Said PXI system is made up of single-pole single-throw switch (SPST), single-pole single-throw switch (SPST), matrix switch, digital multimeter, digital quantizer and multisystem expansion interface, and switch switching circuit is made up of switch contacts, electric current and voltage joint, digital quantizer joint, communication board joint, power supply interface and cable splice; Sensor adapter and sensor are arranged in the baking oven.Single-pole single-throw switch (SPST) in the PXI system, single-pole single-throw switch (SPST), matrix switch all link to each other with the switch contacts of switch switching circuit through cable; Digital multimeter is joined through the electric current and voltage joint of cable and switch switching circuit; Digital quantizer links to each other with the digital quantizer joint of switch switching circuit, the pin one of digital quantizer joint to pin 4 equal ground connection.The pin 5 of digital quantizer joint links to each other with the input end of digital quantizer; Controller/main frame links to each other with power supply through general purpose interface bus; Power supply links to each other with the power supply interface of switch switching circuit through lead, and the positive pole of the output cathode of power supply and power supply interface joins, and the output negative pole of power supply and power supply negative pole join; Controller links to each other with the communication board interface through universal serial port bus, communication board; Sensor is connected on the sensor adapter, and on the cable splice of sensor adapter through cable and switch switching circuit, said pressure controller links to each other with sensor in the baking oven.
Take such scheme, have the following advantages:
Can find out by such scheme, because sensor by single-pole single-throw switch (SPST), single-pole double-throw switch (SPDT), its break-make of matrix switch control, so extensibility is good, can increase and decrease the quantity of tested sensor through the increase and decrease number of switches.Because total system, each module Highgrade integration, and through software control, so simple to operate, increasingly automated, production efficiency is high.
Description of drawings
Fig. 1 is little tester data collector square frame signal of the present invention.
Embodiment
As shown in Figure 1; Little tester data collector of the present invention comprises PXI system, switch switching circuit, baking oven, pressure controller, controller/main frame, communication board and power supply; Said PXI system is made up of single-pole single-throw switch (SPST), single-pole double-throw switch (SPDT), matrix switch, digital multimeter, digital quantizer and multisystem expansion interface, and switch switching circuit is made up of switch contacts, electric current and voltage joint, digital quantizer joint, communication board joint, power supply interface and cable splice; Sensor adapter and sensor are arranged in the baking oven.Single-pole single-throw switch (SPST) in the PXI system, single-pole double-throw switch (SPDT), matrix switch all link to each other with the switch contacts of switch switching circuit through cable; Digital multimeter is joined through the electric current and voltage joint of cable and switch switching circuit; Digital quantizer links to each other with the digital quantizer joint of switch switching circuit, the pin one of digital quantizer joint to pin 4 equal ground connection.The pin 5 of digital quantizer joint links to each other with the input end of digital quantizer; Controller/main frame links to each other with power supply through general purpose interface bus; Power supply links to each other with the power supply interface of switch switching circuit through lead; The positive pole of the output cathode of power supply and power supply interface joins, and the output negative pole of power supply and power supply negative pole join, and controller links to each other with communication board through universal serial port bus; Communication board is connected on the communication board interface of switch switching circuit; Sensor is connected on the sensor adapter, and the sensor adapter is connected with the cable splice of switch switching circuit through cable, and said pressure controller links to each other with sensor in the baking oven.Controller/main frame links to each other with baking oven through cable, is used for temperature of oven is controlled.Controller/main frame links to each other with sensor in the baking oven through cable, is used for carrying out data acquisition.Power supply links to each other with baking oven through cable, so that give sensor and switch switching circuit power supply.
Wherein, single-pole single-throw switch (SPST) is that high channel is counted the general-purpose relay switch, carries out the switching of the unlike signal of each sensor.Single-pole double-throw switch (SPDT) also is that high channel is counted the general-purpose relay switch, carries out the switching of the power supply of each sensor.Matrix switch also is that high channel is counted the general-purpose relay switch, through the break-make of software control relay, and then carries out sensor signal and selects.LabVIEW software is used to control the break-make of each switch on the PXI, connection hardware, collection, analysis, demonstration and stores it.Cable splice is inserted on the switch switching circuit plate among the present invention, through cable, receives on the sensor connector, and sensor connector is to be used for connecting the sensor that is placed in the baking oven.
Pressure controller wherein is used for accurate different force value to sensor being provided, and baking oven is used to provide different temperature.So just can gather the output of different pressures different temperatures lower sensor.
The concrete course of work is following; Earlier all the sensors is placed baking oven, all install startup, each device initialize; And all parameters are set, controller is connected through multisystem expansion interface bus, general purpose interface bus, universal serial port bus respectively with PXI system, power supply, communication board.Secondly controller is given the power supply of conversion switch and sensor through LabVIEW software control power supply, and the pressure of controlled pressure controller and temperature of oven.Afterwards, to all the sensors energising, make the sensor can operate as normal.Then, be set to T=25 ℃ through the controller temperature of oven, the output pressure of pressure controller is 0; Promptly measure P=0, the output of all the sensors under T=25 ℃ of (normal temperature) condition is not because there is pressure; This moment, the output of all the sensors all was zero offset voltage, i.e. offset.Read all bias voltages that collect by controller,, corresponding sensor is done corresponding compensation according to the bucking voltage of each sensor through software setting.Afterwards, the output of pressure controller is made as P1, oven temperature is under the situation of T1; Gather the output of all the sensors, pressure is constant, and the baking oven temperature is respectively under the situation of T2, T3, T4, T5, T6, T7, T8, T9, T10; Gather the output of each sensor; Through calling the power function of EXCEL, the data that collect are carried out least square fitting, can obtain the nonlinearity of each sensor under the situation that pressure is P1.Output with pressure controller is made as P2, P3, P4, P5, P6, P7, P8, P9 respectively then; Under the P10 situation, collecting temperature is T1 respectively, T2, T3, T4, T5, T6, T7; T8, T9, the output of sensor during T10 through calling the power function of EXCEL, is carried out least square fitting with the data that collect, and can obtain pressure and be respectively P2, P3; P4, P5, P6, P7, P8, P9, the nonlinearity of each sensor under the situation of P10.
Through the present invention, the sensor accuracy after the calibration can reach: 0.5%FSO (full scale output).
Claims (1)
1. little tester data collector; Comprise PXI system, switch switching circuit, baking oven, pressure controller, controller/main frame, communication board and power supply; Said PXI system is made up of single-pole single-throw switch (SPST), single-pole double-throw switch (SPDT), matrix switch, digital multimeter, digital quantizer and multisystem expansion interface, and switch switching circuit is made up of switch contacts, electric current and voltage joint, digital quantizer joint, communication board joint, power supply interface and cable splice; Sensor adapter and sensor are arranged in the baking oven; Single-pole single-throw switch (SPST) in the PXI system, single-pole double-throw switch (SPDT), matrix switch all link to each other with the switch contacts of switch switching circuit through cable; Digital multimeter is joined through the electric current and voltage joint of cable and switch switching circuit; Digital quantizer links to each other with the digital quantizer joint of switch switching circuit, the pin one of digital quantizer joint to pin 4 equal ground connection; The pin 5 of digital quantizer joint links to each other with the input end of digital quantizer; Controller/main frame links to each other with power supply through general purpose interface bus; Power supply links to each other with the power supply interface of switch switching circuit through lead; The positive pole of the output cathode of power supply and power supply interface joins, and the output negative pole of power supply and power supply negative pole join, and controller links to each other with communication board through universal serial port bus; Communication board is connected on the communication board interface of switch switching circuit; Sensor is connected on the sensor adapter, and on the cable splice of sensor adapter through cable and switch switching circuit, said pressure controller links to each other with sensor in the baking oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101293405A CN102628699A (en) | 2012-04-28 | 2012-04-28 | Data collecting device for micro tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101293405A CN102628699A (en) | 2012-04-28 | 2012-04-28 | Data collecting device for micro tester |
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| CN102628699A true CN102628699A (en) | 2012-08-08 |
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| CN2012101293405A Pending CN102628699A (en) | 2012-04-28 | 2012-04-28 | Data collecting device for micro tester |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134547A (en) * | 2013-01-15 | 2013-06-05 | 中国人民解放军91663部队 | Integration metrological verification device formed by multi-class standard instrument |
| CN104807594A (en) * | 2015-03-31 | 2015-07-29 | 广西智通节能环保科技有限公司 | Automatic measuring system based on matrix switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5070732A (en) * | 1987-09-17 | 1991-12-10 | Square D Company | Modular sensor device |
| US5790432A (en) * | 1995-08-21 | 1998-08-04 | Solar Light Company, Inc. | Universal measuring instrument with signal processing algorithm encapsulated into interchangeable intelligent detectors |
| CN102353865A (en) * | 2011-09-05 | 2012-02-15 | 西安石油大学 | Automatic testing device and method universally used for multiple bus processor modules |
| CN202614271U (en) * | 2012-04-28 | 2012-12-19 | 无锡永阳电子科技有限公司 | Data collecting device for micro tester |
-
2012
- 2012-04-28 CN CN2012101293405A patent/CN102628699A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5070732A (en) * | 1987-09-17 | 1991-12-10 | Square D Company | Modular sensor device |
| US5790432A (en) * | 1995-08-21 | 1998-08-04 | Solar Light Company, Inc. | Universal measuring instrument with signal processing algorithm encapsulated into interchangeable intelligent detectors |
| CN102353865A (en) * | 2011-09-05 | 2012-02-15 | 西安石油大学 | Automatic testing device and method universally used for multiple bus processor modules |
| CN202614271U (en) * | 2012-04-28 | 2012-12-19 | 无锡永阳电子科技有限公司 | Data collecting device for micro tester |
Non-Patent Citations (2)
| Title |
|---|
| 杨霞等: "《基于PXI和LabVIEW的远程数据采集系统》", 《工业仪表与自动化装置》 * |
| 钱国平等: "《基于PⅪ总线的数据采集模块设计》", 《哈尔滨理工大学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134547A (en) * | 2013-01-15 | 2013-06-05 | 中国人民解放军91663部队 | Integration metrological verification device formed by multi-class standard instrument |
| CN103134547B (en) * | 2013-01-15 | 2015-07-15 | 中国人民解放军91663部队 | Integration metrological verification device formed by multi-class standard instrument |
| CN104807594A (en) * | 2015-03-31 | 2015-07-29 | 广西智通节能环保科技有限公司 | Automatic measuring system based on matrix switch |
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Application publication date: 20120808 |