CN201149535Y - Measuring unit for multipath pressure integration - Google Patents
Measuring unit for multipath pressure integration Download PDFInfo
- Publication number
- CN201149535Y CN201149535Y CNU200820031014XU CN200820031014U CN201149535Y CN 201149535 Y CN201149535 Y CN 201149535Y CN U200820031014X U CNU200820031014X U CN U200820031014XU CN 200820031014 U CN200820031014 U CN 200820031014U CN 201149535 Y CN201149535 Y CN 201149535Y
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- pressure
- integrated
- processing circuit
- signal processing
- circuit
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Abstract
The utility model provides a multi-channel pressure integrated measurement unit, wherein a pressure sensor is connected with a sensor connection aviation plug, an eight-way signal output interface plug and a power supply are arranged on the bottom of an eight-way signal processing integrated circuit packing box. In the field of test, not only pressure measurement of a plurality of location points on the surface of a tested body is achieved, but also sensor combination design measuring signal integration treatment is achieved, a split type of a sensor element and a processing circuit is adopted, and the multi-channel signal processing circuit integrated into an amplifying circuit plate amplifies signals by units to realize multi-channel standard pressure signal output; a pressure sensor element adopts the diffusion silicon mini-package which has the minimum installation volume, the pressure sensor element is connected with an integrated processing circuit by a shielding wire for transmitting non-standard electric quality to the integrated processing circuit to make linear and amplification treatment. The pressure integrated measurement unit has the advantages of realization of multi-point pressure measurement, small installation volume of measurement unit, full stainless steel structure, strong watertight capacity, and meeting conditions of wind-tunnel test and underwater weapons simulation test.
Description
Technical field
The utility model relates to a kind of multichannel pressure integral measuring unit, mainly in the scientific research and testing field, in wind tunnel test or the underwater ordnance simulation test, the diverse location of the outside surface of the simulated flight device multichannel pressure integral measuring unit that the pressure size is measured under different attitudes, installing space is little, realize multimetering, belong to scientific research and testing device field.
Background technology
The current needs in wind tunnel experiment or underwater ordnance simulated experiment carried out pressure survey to a plurality of bearing points on the surface of experiment body under difference operation attitude, common experiment way is that the way that tested experiment body is installed a plurality of pressure transducers is solved, and it is in fact limited because of lab space, traditional sensor can't be realized a large amount of installations, many measurement points have to abandon measure or estimate the pressurized size by mathematical modeling, development along with the disassemble technique of the progress of miniaturized sensors packaging technology and sensing element and treatment circuit, more than measure contradiction and progressively alleviate, multichannel pressure integral measuring unit is producing under the background like this.
Summary of the invention
The utility model is intended to solve multimetering and the limited contradiction of sensor installation volume in the experiment field and the pressure tester developed, proposition splits the way that encapsulates with the treatment circuit (compensating circuit, linear correction circuit, amplifying circuit) of sensor with pressure-sensing device, with the nearly integrated design of treatment circuit (compensating circuit, linear correction circuit, signal amplification circuit) of eight～ten No. six pressure transducers, simultaneously responsive load cell is carried out the microminiaturization encapsulation to dwindle installation volume.The measured nonstandard electric weight of pressure-sensing device transfers to integrated treatment circuit by shielded conductor, and lead uses air plug to be connected with integrated treatment circuit
Technical solution of the present utility model: its structure is a pressure transducer (microencapsulated of pressure-active element) by referring to that four-core shielded conductor and sensor on being installed in eight road signal processing integrated circuit enclosure are connected air plug and join; Power supply and eight road signal output interface plugs are equipped with in the bottom of eight road signal processing integrated circuit enclosure.
The treatment circuit of institute's art (containing compensating circuit, linear correction circuit, amplifying circuit) is carried out single supply 24V power supply, eight tunnel amplifiers are handled for ground, every road input signal is carried out and is amplified output separately, and independently gain-adjusted and zero-bit adjusting are set, eight tunnel sensing nonstandard signals amplify respectively adjusts back output eight road sign calibration signal
The microminiaturization encapsulation of described pressure-sensing device, the Silicon pressure sensitive chip sticks on the stainless steel glass sintered body, and erection joint and front end 316L diaphragm carry out the argon arc welding with the stainless steel glass sintering base of having pasted sensitive chip, welding rear chamber embedding silicone oil.Medium pressure is delivered to sensitive chip by 316L diaphragm and silicone oil, thereby realizes pressure survey, and shielded conductor is connected with the lead-in wire of sintered body realizes the signal transmission.
Advantage of the present utility model: the required signal processing and amplifying function of eight point pressures test has been satisfied in the integrated design of eight road circuit, 8 tests have been realized, adopt sensing element and circuit split design to reduce the encapsulation volume of pressure-sensing device, solved the little contradiction of the installing space of sensitive element on measured body, the stainless steel welded structure has also realized the condition of work of watertight.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Among the figure 1 is that pressure transducer (microencapsulated of pressure-active element), 2 is meant that four-core shielded conductor, 3 is eight road signal processing integrated circuits (circuit package box), the 4th, and sensor connects air plug, the 5th, power supply and eight road signal output interface plugs.
Embodiment
To be pressure transducer (microencapsulated of pressure-active element) 1 be connected air plug 4 by the sensor on referring to four-core shielded conductor 2 and being installed in eight road signal processing integrated circuit enclosure 3 joins for contrast accompanying drawing 1, its structure; Power supply and eight road signal output interface plugs 5 are equipped with in the bottom of eight road signal processing integrated circuit enclosure 3.
The measurement of amount of pressure realizes measuring by pressure transducer 1, in this multichannel pressure integral measuring unit, have 8 pressure transducers, mainly be that amount of pressure is converted to off-gauge millivolt of voltage output, amount of pressure is linear with output millivolt voltage, shielded conductor 2 transfers to signal processing circuit 3 with the millivolt voltage signal and carries out temperature compensation and signal processing and amplifying, the millivolt voltage of 8 different pressures sensor measurement transmission carries out processing and amplifying respectively by eight road signal processing integrated circuits, and the standard signal after the processing is by power supply and the 5 corresponding outputs of eight road signal output interface plugs.
The temperature compensation of sensor adopts temperature-compensation circuit to realize in eight tunnel signal processing circuits, and signal amplifying part divides employing LM124 integrated operational amplifier to finish, and eight road signals are the common-battery source altogether.
Claims (2)
1, multichannel pressure integral measuring unit is characterized in that pressure transducer is by referring to that four-core shielded conductor and sensor on being installed in eight road signal processing integrated circuit enclosure are connected air plug and join; Power supply and eight road signal output interface plugs are equipped with in the bottom of eight road signal processing integrated circuit enclosure.
2, multichannel pressure integral measuring according to claim 1 unit, it is characterized in that described pressure transducer is the Silicon pressure sensitive chip, microminiaturized encapsulation, stick on the stainless steel glass sintered body, erection joint and front end 316L diaphragm carry out the argon arc welding with the stainless steel glass sintering base of having pasted sensitive chip, welding rear chamber embedding silicone oil, medium pressure is delivered to sensitive chip by 316L diaphragm and silicone oil, thereby realization pressure survey, shielded conductor are connected the transmission of realization signal with the lead-in wire of sintered body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820031014XU CN201149535Y (en) | 2008-01-22 | 2008-01-22 | Measuring unit for multipath pressure integration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820031014XU CN201149535Y (en) | 2008-01-22 | 2008-01-22 | Measuring unit for multipath pressure integration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201149535Y true CN201149535Y (en) | 2008-11-12 |
Family
ID=40117306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820031014XU Expired - Lifetime CN201149535Y (en) | 2008-01-22 | 2008-01-22 | Measuring unit for multipath pressure integration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201149535Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539062A (en) * | 2011-12-29 | 2012-07-04 | 中国燃气涡轮研究院 | Sensor temperature drift compensation method and pressure sensor box |
| CN105444941A (en) * | 2015-12-15 | 2016-03-30 | 中国燃气涡轮研究院 | Multi-point gas pressure pipeline integration connecting joint |
| CN105676899A (en) * | 2016-03-01 | 2016-06-15 | 侯如升 | Voltage-stabilizing device for full-automatic bonder |
-
2008
- 2008-01-22 CN CNU200820031014XU patent/CN201149535Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539062A (en) * | 2011-12-29 | 2012-07-04 | 中国燃气涡轮研究院 | Sensor temperature drift compensation method and pressure sensor box |
| CN105444941A (en) * | 2015-12-15 | 2016-03-30 | 中国燃气涡轮研究院 | Multi-point gas pressure pipeline integration connecting joint |
| CN105444941B (en) * | 2015-12-15 | 2018-04-03 | 中国燃气涡轮研究院 | It is a kind of to be integrated and connected joint for multiple spot gas pressure pipeline |
| CN105676899A (en) * | 2016-03-01 | 2016-06-15 | 侯如升 | Voltage-stabilizing device for full-automatic bonder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081112 |