CN202305106U - Debugging system of pressure sensors - Google Patents

Debugging system of pressure sensors Download PDF

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Publication number
CN202305106U
CN202305106U CN2011203905996U CN201120390599U CN202305106U CN 202305106 U CN202305106 U CN 202305106U CN 2011203905996 U CN2011203905996 U CN 2011203905996U CN 201120390599 U CN201120390599 U CN 201120390599U CN 202305106 U CN202305106 U CN 202305106U
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China
Prior art keywords
pressure transducer
pressure
handover module
debugging
serial
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Expired - Lifetime
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CN2011203905996U
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Chinese (zh)
Inventor
贾庆锋
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JIANGYIN MAXONIC ENTECH SENSOR CO., LTD.
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JIANGSU ENTECH SENSOR CO Ltd
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Abstract

The utility model provides a debugging system of pressure sensors. The debugging system of the pressure sensors includes a multi-channel sensor testing pressure base, a high-low temperature chamber, a pressure control instrument, a multi-channel signal switching module, a programmable power source, a high-precision universal meter, a single-line digital converting module and an industrial personal computer. The debugging system of the pressure sensors can realize high-precision pressure calibration and temperature compensation. A working temperature range of a product after compensating is wide. And a whole debugging process is realized by the debugging system of the pressure sensor automatically. The debugging system of the pressure sensors is suitable for the debugging work of the sensors in batch production.

Description

The pressure transducer debug system
Technical field
The utility model relates to the sensor production specialized equipment, relates in particular to a kind of pressure transducer debug system.
Background technology
Domestic sensor producer adopts assessment external member or SCM system, uses the product of MAX1452 chip manufacturing sample or short run, and debug process is complicated; Need manual work to debug each product successively, from the output of observation sensor, to changing internal data; Observation again changes again, reaches requirement up to output; Plus-pressure changes internal data debugging full scale, when getting back to zero point once more again to full scale then; Usually can change because of the debugging of range again zero point, can not form data closed loop debugging and passage automatic switchover automatically, and longer to sensor debugging elapsed time in batches; So whole debug process needs constantly repeatedly, inefficiency.
The utility model content
The utility model provides a kind of pressure transducer debug system, to realize the mass pressure calibration and the temperature compensation of pressure transducer.
The utility model provides a kind of pressure transducer debug system; Comprise: multiple sensor test pressure seat; At least one pressure transducer places said multiple sensor test pressure seat; Wherein each said pressure transducer comprises 4 extension lines, is respectively positive outside wire, negative outside wire, voltage output line and data communication line; High-low temperature chamber, said multiple sensor test pressure seat places said high-low temperature chamber; Pressure controller, it is connected with multiple sensor test pressure seat through pneumatic circuit; The multiple signals handover module, it comprises connection jaws, power supply access port, voltage output, data communication mouth and passage control mouth, said connection jaws is connected with 4 extension lines of each pressure transducer respectively; Programmable power supply, its both positive and negative polarity are connected with the positive outside wire and the negative outside wire of each pressure transducer through the power supply access port of said multiple signals handover module respectively; The high precision multimeter, its voltage output through said multiple signals handover module is connected with the voltage output line of each pressure transducer; The single wire digital modular converter, its data communication mouth through said multi channel signals handover module is connected with the data communication line of each pressure transducer; And industrial computer; It comprises first serial, second serial and digital control card; Said first serial is connected with said high precision multimeter, and said second serial is connected with said single wire digital modular converter, and said digital control card is connected with the passage control mouth of multiple signals handover module.
Further, the connection jaws of said multiple signals handover module is connected with 4 extension lines of each pressure transducer through multiway cable.
Further, said pressure transducer is the intelligent pressure sensor based on the MAX1452 chip.
Compared with prior art, the utlity model has following beneficial effect:
Through said pressure transducer debug system, high-precision pressure calibration of the sensor that is achieved and temperature compensation, the operating temperature range of the product after the compensation is wide, and whole debug process is accomplished automatically, the debugging work of the pressure transducer that is suitable for producing in batches.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
The structural representation of the pressure transducer debug system that Fig. 1 provides for the utility model embodiment.
In Fig. 1,
1: multiple sensor test pressure seat; 2: pressure transducer; 3: high-low temperature chamber; 4: pressure controller; 5: pneumatic circuit; 6: the multiple signals handover module; 7: connection jaws; 8: the power supply access port; 9: voltage output; 10: the data communication mouth; 11: passage control mouth; 12: programmable power supply; 13: the high precision multimeter; 14: the single wire digital modular converter; 15: industrial computer; 16: first serial; 17: second serial; 18: digital control card; 19: multiway cable.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the pressure transducer debug system that the utility model proposes is done further explain.According to following explanation and claims, advantage of the utility model and characteristic will be clearer.What need explanation is, accompanying drawing all adopts the form of simplifying very much and all uses non-ratio accurately, only in order to convenient, the purpose of aid illustration the utility model embodiment lucidly.
The core concept of the utility model is; A kind of pressure transducer debug system is provided; Said pressure transducer debug system is placed all pressure transducers of multiple sensor test pressure seat that required datum pressure is provided through pressure controller; Set the required environment temperature of debugging through high-low temperature chamber, wherein one the tunnel debug through multiple signals handover module gating again, record the output voltage of pressure transducer then through the high precision multimeter; After the industrial computer computational analysis; The data that draw are write through the single wire digital modular converter in the chip of pressure transducer, under the situation of pressure transducer zero pressure and full scale pressure, repeat to read voltage, calculate and write work repeatedly, after having demarcated a point, pass through the working temperature point that high-low temperature chamber switches pressure transducer to realize the high-precision pressure calibration of sensor; Proceed the staking-out work of other points; Calculate the data of all temperature spots afterwards through industrial computer, the data form burning that draws is advanced in each the sensor chip and carry out high-precision temperature compensation, the operating temperature range of the product after the compensation is wide; Whole debug process is accomplished by this system automatically, the debugging work of the pressure transducer that is suitable for producing in batches.
The structural representation of the pressure transducer debug system that Fig. 1 provides for the utility model embodiment.As shown in Figure 1, said pressure transducer debug system comprises:
Multiple sensor test pressure seat 1; It is used to place at least one pressure transducer 2; And can apply datum pressure for simultaneously a plurality of pressure transducers 2; Wherein each said pressure transducer 2 comprises 4 extension lines, is respectively positive outside wire, negative outside wire, voltage output line and data communication line;
High-low temperature chamber 3, it is used to place said multiple sensor test pressure seat 1, and provides system debug required temperature environment for the pressure transducer 2 in multiple sensor test pressure seat 1;
Pressure controller 4, it is connected with multiple sensor test pressure seat 1 through pneumatic circuit 5, is used to set the force value that imposes on pressure transducer 2;
Multiple signals handover module 6; It comprises connection jaws 7, power supply access port 8, voltage output 9, data communication mouth 10 and passage control mouth 11; Said connection jaws 7 is connected with 4 extension lines of each pressure transducer 8 respectively; Said multiple signals handover module 6 is used to receive the multiple signals that all pressure transducers of accepting debugging 2 insert, and selects wherein one the tunnel to export;
Programmable power supply 12, its both positive and negative polarity are connected with the positive outside wire and the negative outside wire of each pressure transducer 2 through the power supply access port 8 of said multiple signals handover module 6 respectively, and said programmable power supply 12 is used to pressure transducer 2 power supplies of accepting debugging;
High precision multimeter 13, its voltage output 9 through said multiple signals handover module 6 is connected with the voltage output line of each pressure transducer 2, is used to measure the output voltage simulating signal of the pressure transducer 2 of accepting debugging;
Single wire digital modular converter 14, its data communication mouth 10 through said multi channel signals handover module 6 is connected with the data communication line of each pressure transducer 2;
Industrial computer 15; It comprises first serial 16, second serial 17 and digital control card 18; Its first serial 16 is connected with said high precision multimeter 13; Said high precision multimeter is delivered to 13 magnitudes of voltage measured in the industrial computer 15 through first serial 16, and said industrial computer 15 calculates and analyzes according to the voltage that receives, and draws offset data; Its second serial 17 is connected with said single wire digital modular converter 14; Said single wire digital modular converter 14 is used for changing in offset data that industrial computer 15 calculates and the chip that is written into pressure transducer 2, and the passage control of its digital control card 18 and multiple signals handover module 6 mouthfuls 11 is connected, and said industrial computer 15 switches to the passage that each pressure transducer of accepting debugging 2 belongs to successively through digital control card 18 control multiple signals handover modules 6.
Further; The connection jaws 7 of said multiple signals handover module 6 is connected with 4 extension lines of each pressure transducer 2 through multiway cable 19; Wherein, Said multiway cable 19 has played the extension line of integrating with the pressure transducer 2 of arranging, and makes these extension lines can be because of the problem such as wiring error that causes at random of arranging.
Further; Said pressure transducer 2 is the intelligent pressure sensor based on the MAX1452 chip, and the MAX1452 chip is the high performance sensor signal conditioning special chip that U.S. MAXIM company releases, and can the feeble signal of electric bridge be carried out processing and amplifying; The temperature inside sensor can detect Current Temperatures simultaneously; Go to table look-up according to current temperature value then, find the correction data of zero point and full scale, realize temperature compensation.
Specify the function implementation procedure of the pressure transducer debug system that the utility model provides below in conjunction with Fig. 1.
Please refer to Fig. 1; The first step of the adjustment method of said pressure transducer debug system is being connected through industrial computer 15 and each equipment; Make industrial computer 15 and each pressure transducer 2 of accepting debugging set up communication; All passages of initialization are then removed the data and the voltage of all passages, set high-low temperature chambers 3 required some temperature spots when the debugging through industrial computer 15 again; And the digital control card through industrial computer 15 18 selects the passage of the pressure transducer 2 of required debugging, makes multiple signals handover module 6 can in these passages, carry out switch operating.
Second step of the adjustment method of said pressure transducer debug system is the target voltage values that need be adjusted to industrial computer 15 pre-set these pressure transducers 2, and promptly 1V controls multiple sensor test pressure seats 1 through pressure controller 4 then; Make its unified to batch pressure transducer 2 apply the required pressure of debugging, i.e. zero pressure, industrial computer 15 reads the output voltage of pressure transducer 2 through high precision multimeter 13 then; Regulate step-length again, read output voltage again, read finish after; Industrial computer 15 calculates required regulated quantity, and the data of this regulated quantity are write in the inner MAX1452 chip of pressure transducer 2 through single wire digital modular converter 14, carries out zero compensation work; Regulate the output voltage of pressure transducer 2; And then whether the output voltage of the pressure transducer 2 after judge regulating reach desired value, if the miss the mark value then continues the required regulated quantity of double countings through industrial computer 15, writes data again; Compensate; Voltage output up to pressure transducer 2 can accurately reach desired value, next passes through the control of the digital control card 18 of industrial computer 15, makes multiple signals handover module 6 switch to the next passage of accepting pressure transducer 2 places of debugging; Repeat above-mentioned all processes in this step; Zero calibration up to all pressure transducers 2 finishes, and whole debug process is carried out by industrial computer 15 automatically, is the regulating system of a closed loop.
The 3rd step of the adjustment method of said pressure transducer debug system is basic identical with the process in second step; Just when the target setting magnitude of voltage; The desired value that need be adjusted to pressure transducer 2 is made as 5V; When pressure transducer 2 is applied required pressure; Make pressure controller 4 control the pressure that 1 pair of pressure transducer 2 of multiple sensor test pressure seats applies full scale, in addition, after demarcating satisfactory range output voltage; Industrial computer 15 applies zero pressure in pressure transducer 2 again through pressure controller 4 control multiple sensor test pressure seats 1; Measure the zero pressure output voltage of calibrated pressure transducer 2 then through high precision multimeter 13, judge the desired value when whether it has reached predefined zero pressure, then do not repeat above-mentioned all processes in second step and this 3rd step if reach; All reached its predefined desired value up to all zero pressure output voltage and full pressure output voltages of accepting the pressure transducer 2 of debugging, industrial computer 15 can be kept at the gained data in its hard disk then.
The 4th step of the adjustment method of said pressure transducer debug system is that the temperature that changes in the high-low temperature chamber 3 reaches predefined temperature; Carry out the pressure calibration work of pressure transducer 2 after waiting temperature is stable; Carry out the pressure calibration work of pressure transducer 2 again at low-temperature space and high-temperature region respectively afterwards; Pressure transducer 2 is debugged resulting data and is calculated the offset data form through industrial computer 15 usefulness curve interpolation methods under low temperature and high temperature; And all data are burnt in the MAX1452 chip of each pressure transducer 2 of accepting debugging successively, accomplish temperature compensation to pressure transducer 2.At each temperature spot of having set of high-low temperature chamber 3, repeat about 2 zero-pressures debugging and full scale debugging, the output voltage of pressure transducer 2 can reach requirement (error is less than 0.1%) usually like this.After burning is accomplished; 2 outages of 12 pairs of all pressure transducers of industrial computer 15 control programmable power supplies, power-on-reset again, each pressure transducer 2 gets into mode of operation automatically after energising; Its MAX1452 chip utilization carries the measurement that temperature sensor carries out operating ambient temperature; Table look-up, and revise the output of sensor, realize the temperature compensation of pressure transducer 2; Last again all pressure transducers 2 of accepting debugging are carried out performance test, to test the pressure calibration that said pressure transducer debug system carries out pressure transducer 2 and the effect of temperature compensation.
Following is the tune-up data of a sensor in the pressure transducer of accepting to debug 2, and sensor output is 1~5V, is respectively at 0 ℃, 25 ℃, and 65 ℃ of data of debugging down:
Data by last table can find out that the zero-pressure output of the pressure transducer 2 after the debugging and full pressure output are very accurately.
Three groups of data in the above table are carried out interpolation calculation, then the offset data that draws is burnt in the MAX1452 chip, test, the result is following:
Temperature spot Numbering Output at zero point Full pressure output
0℃ 1 1.010 5.009
25℃ 1 1.012 5.016
65℃ 1 0.997 5.003
Data by last table can find out that the temperature error of pressure transducer 2 has reached the compensation purpose of expection less than 0.5%FS after carrying out temperature compensation.If accept the good reproducibility of the pressure transducer 2 of debugging, can also reach higher compensation precision.
In sum; The utility model provides a kind of pressure transducer debug system; Said pressure transducer debug system is placed all pressure transducers of multiple sensor test pressure seat that required datum pressure is provided through pressure controller; Set the required environment temperature of debugging through high-low temperature chamber, wherein one the tunnel debug through multiple signals handover module gating again, record the output voltage of pressure transducer then through the high precision multimeter; After the industrial computer computational analysis; The data that draw are write through the single wire digital modular converter in the chip of pressure transducer, under the situation of pressure transducer zero pressure and full scale pressure, repeat to read voltage, calculate and write work repeatedly, after having demarcated a point, pass through the working temperature point that high-low temperature chamber switches pressure transducer to realize the high-precision pressure calibration of sensor; Proceed the staking-out work of other points; Calculate the data of all temperature spots afterwards through industrial computer, the data form burning that draws is advanced in each the sensor chip and carry out high-precision temperature compensation, the operating temperature range of the product after the compensation is wide; Whole debug process is accomplished by this system automatically, the debugging work of the pressure transducer that is suitable for producing in batches.
Obviously, those skilled in the art can carry out various changes and distortion to the utility model and not break away from the spirit and the scope of the utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof if these of the utility model are revised with modification, then the utility model also is intended to comprise these changes and modification interior.

Claims (3)

1. a pressure transducer debug system is characterized in that, comprising:
Multiple sensor test pressure seat; At least one pressure transducer places said multiple sensor test pressure seat; Wherein each said pressure transducer comprises 4 extension lines, is respectively positive outside wire, negative outside wire, voltage output line and data communication line;
High-low temperature chamber, said multiple sensor test pressure seat places said high-low temperature chamber;
Pressure controller, it is connected with multiple sensor test pressure seat through pneumatic circuit;
The multiple signals handover module, it comprises connection jaws, power supply access port, voltage output, data communication mouth and passage control mouth, said connection jaws is connected with 4 extension lines of each pressure transducer respectively;
Programmable power supply, its both positive and negative polarity are connected with the positive outside wire and the negative outside wire of each pressure transducer through the power supply access port of said multiple signals handover module respectively;
The high precision multimeter, its voltage output through said multiple signals handover module is connected with the voltage output line of each pressure transducer;
The single wire digital modular converter, its data communication mouth through said multi channel signals handover module is connected with the data communication line of each pressure transducer; And
Industrial computer; It comprises first serial, second serial and digital control card; Said first serial is connected with said high precision multimeter, and said second serial is connected with said single wire digital modular converter, and said digital control card is connected with the passage control mouth of multiple signals handover module.
2. pressure transducer debug system according to claim 1 is characterized in that, the connection jaws of said multiple signals handover module is connected with 4 extension lines of each pressure transducer through multiway cable.
3. pressure transducer debug system according to claim 1 and 2 is characterized in that, said pressure transducer is the intelligent pressure sensor based on the MAX1452 chip.
CN2011203905996U 2011-10-13 2011-10-13 Debugging system of pressure sensors Expired - Lifetime CN202305106U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102809463A (en) * 2011-06-03 2012-12-05 上海保隆汽车科技股份有限公司 Method and device for calibrating pressure sensors in batches
CN102865967A (en) * 2012-09-28 2013-01-09 江苏物联网研究发展中心 Device for testing temperature characteristic of pressure sensor
CN103712739A (en) * 2013-12-20 2014-04-09 渤海造船厂集团有限公司 3051 intelligent pressure transmitter calibration device
CN104515646A (en) * 2014-12-25 2015-04-15 山东佰测仪表有限公司 Temperature compensation system for batch of intelligent pressure transmitters
CN105527056A (en) * 2014-09-28 2016-04-27 沈阳中科奥维科技股份有限公司 Temperature reference-based pressure compensation calibration method
CN107588890A (en) * 2017-09-08 2018-01-16 武汉中航传感技术有限责任公司 Pressure sensor test system
CN109323797A (en) * 2018-10-25 2019-02-12 中国科学院电子学研究所 Silicon resonance pressure sensor automatic calibration system and scaling method
CN109682532A (en) * 2018-12-06 2019-04-26 北京强度环境研究所 Strain calibration facility for large space structure pilot system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102809463A (en) * 2011-06-03 2012-12-05 上海保隆汽车科技股份有限公司 Method and device for calibrating pressure sensors in batches
CN102809463B (en) * 2011-06-03 2016-05-11 上海保隆汽车科技股份有限公司 Baroceptor is scaling method and device in batches
CN102865967A (en) * 2012-09-28 2013-01-09 江苏物联网研究发展中心 Device for testing temperature characteristic of pressure sensor
CN103712739A (en) * 2013-12-20 2014-04-09 渤海造船厂集团有限公司 3051 intelligent pressure transmitter calibration device
CN105527056A (en) * 2014-09-28 2016-04-27 沈阳中科奥维科技股份有限公司 Temperature reference-based pressure compensation calibration method
CN104515646A (en) * 2014-12-25 2015-04-15 山东佰测仪表有限公司 Temperature compensation system for batch of intelligent pressure transmitters
CN107588890A (en) * 2017-09-08 2018-01-16 武汉中航传感技术有限责任公司 Pressure sensor test system
CN109323797A (en) * 2018-10-25 2019-02-12 中国科学院电子学研究所 Silicon resonance pressure sensor automatic calibration system and scaling method
CN109323797B (en) * 2018-10-25 2020-06-26 中国科学院电子学研究所 Automatic calibration system and calibration method for silicon resonance pressure sensor
CN109682532A (en) * 2018-12-06 2019-04-26 北京强度环境研究所 Strain calibration facility for large space structure pilot system

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ASS Succession or assignment of patent right

Owner name: JIA QINGFENG

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Effective date: 20140126

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Address after: 224051 Salt Lake highway 52, Ting Hu District, Jiangsu, Yancheng City

Patentee after: Jia Qingfeng

Address before: 224051 Salt Lake highway 18, Ting Hu District, Jiangsu, Yancheng City

Patentee before: Jiangsu Entech Sensor Co., Ltd.

ASS Succession or assignment of patent right

Owner name: JIANGSU ENTECH SENSOR CO., LTD.

Free format text: FORMER OWNER: JIA QINGFENG

Effective date: 20150722

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Address after: 214400, No. 66 Hua Dong Road, Chengjiang street, Jiangyin, Jiangsu

Patentee after: JIANGYIN MAXONIC ENTECH SENSOR CO., LTD.

Address before: 224051 Salt Lake highway 52, Ting Hu District, Jiangsu, Yancheng City

Patentee before: Jia Qingfeng

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Granted publication date: 20120704

CX01 Expiry of patent term