CN201569531U - Reliable-pressure sensor with high dual-redundancy - Google Patents
Reliable-pressure sensor with high dual-redundancy Download PDFInfo
- Publication number
- CN201569531U CN201569531U CN2009202559274U CN200920255927U CN201569531U CN 201569531 U CN201569531 U CN 201569531U CN 2009202559274 U CN2009202559274 U CN 2009202559274U CN 200920255927 U CN200920255927 U CN 200920255927U CN 201569531 U CN201569531 U CN 201569531U
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- pressure
- core body
- sensitive core
- signal processing
- silicon
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Abstract
The utility model discloses a reliable-pressure sensor with high dual-redundancy comprising a pressure conversion joint, two silicon pressure-sensitive core bodies, two silicon pressure-sensitive core body compensation circuits, two electrical signal amplifying processing plates, a stainless steel shell, an electrical connector and potting silica gel, wherein the two silicon pressure-sensitive core bodies are welded with the pressure conversion joint, the two silicon pressure-sensitive core body compensation circuits are respectively connected with two silicon pressure-sensitive core bodies through connecting cables; the two electrical signal amplifying processing plates are respectively connected with output signals of the two silicon pressure-sensitive core body compensation circuits; processing signals of the electrical signal amplifying processing plates are connected out from an aviation electrical connector through an output end of the circuit; the pressure conversion joint, the stainless steel shell and the aviation electrical connector are welded into one body which is filled with the potting silica gel. The advantages of the reliable-pressure sensor are as follows: the sensor has characteristics of small volume, light weight, all stainless steel watertight structure, anti-pressure and anti-salt-fog performance, anti-electromagnetic interference and over-voltage impact, high frequency response, high comprehensive accuracy and small temperature error.
Description
Technical field
The utility model relates to a kind of pressure sensor with double redundancies and high reliability of hydrodynamic pressures such as measurement aircraft and particular kind of machine oil supply system, lubricating system, hydraulic system, gas compression system, measuring media is gas, hydraulic pressure wet goods fluid, belongs to the pressure transducer technical field.
Background technology
In current flight device, the particular kind of machine and in the emphasis control procedure, gaging pressure physical quantitys such as oil supply system, lubricating system, hydraulic system, gas compression system are many; Conventional pressure transducer can only carry out single-measurement to system under test (SUT).Because importance, security and the reliability requirement measured, usually requiring same spot pressure just to need that two pressure transducers are installed guarantees, when a pressure transducer breaks down, another can operate as normal, because there is the difference on the performance in two sensors, and owing to the position difference that is installed in the measuring system, the result brings systematic error to measurement; And on installing space, require bigger; So just need a pressure sensor with double redundancies and high reliability.
Summary of the invention
The utility model proposes a kind of pressure sensor with double redundancies and high reliability, its purpose is intended to that a spot pressure provides two same signals in the measuring system; Utilize the characteristics of the miniaturization of diffused-silicon pressure sensitive element, temperature compensation normalization, treatment circuit microminiaturization, proposition with two Silicon pressure sensitive core body by welded and installed in same pressure X-over, temperature compensation and treatment circuit are integrated in same enclosure interior, be implemented in a pressure sensor with double redundancies and high reliability is installed on the pressure measurement point, obtain the identical electrical output signal of two-way.
Technical solution of the present utility model: its structure is that two Silicon pressure sensitive core body are welded in the pressure X-over, two Silicon pressure sensitive core body compensating circuits link to each other with two Silicon pressure sensitive core body respectively by stube cable, two blocks of electric signal processing and amplifying plates are connected with two Silicon pressure sensitive core body compensating circuit output signals respectively, processing signals through electric signal processing and amplifying plate is exported from electric connector by output port, the pressure X-over, Stainless Steel Shell and electric connector are integrally welded, embedding silica gel in this body, screw threads for fastening between two Silicon pressure sensitive core body and the pressure X-over, and be welded into a whole by attachment weld, fixed support is welded on the pressure X-over, integrated signal micro-processor interface circuit is welded on the two path signal processing and amplifying plate, two path signal processing and amplifying plate is fixed on the support by 4 mounting screws, two path signal processing and amplifying plate is connected with Silicon pressure sensitive core body compensating circuit input end and electric connector respectively by the connection lead-in wire that connects between Silicon pressure sensitive core body compensating circuit and the electric signal processing and amplifying plate between lead-in wire and electric signal processing and amplifying plate and the electric connector, the pressure X-over is connected with tested press device by the pressure interface screw thread, and the reinforced safety hole is fixed on the tested press device.
Advantage of the present utility model: this pressure sensor with double redundancies and high reliability has that volume is little, in light weight, all steel watertight structure, withstand voltage anti-salt fog, the characteristics that anti-electromagnetic interference (EMI) and overvoltage are impacted, frequency response height, synthesis precision height, characteristics such as temperature error is little.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is pressure core body compensating circuit figure.
Among the figure 1 is the pressure admission passage, the 2nd, the pressure interface screw thread, the 3rd, the pressure X-over, the 4th, pressure chamber, the 5th, the Silicon pressure sensitive core body, the 6th, the reinforced safety hole, the 7th, attachment weld between Silicon pressure sensitive core body and the pressure X-over, the 8th, Silicon pressure sensitive core body compensating circuit, the 9th, fixed support, the 10th, mounting screw, the 11st, connect lead-in wire between Silicon pressure sensitive core body compensating circuit and the electric signal processing and amplifying plate, the 12nd, integrated signal micro-processor interface circuit, the 13rd, electric signal processing and amplifying plate, 14 Stainless Steel Shell, the 15th, the connection lead-in wire between electric signal processing and amplifying plate and the electric connector, the 16th, electric connector, the 17th, embedding silica gel.
Embodiment
Claims (1)
1. pressure sensor with double redundancies and high reliability, it is characterized in that two Silicon pressure sensitive core body are welded in the pressure X-over, two Silicon pressure sensitive core body compensating circuits link to each other with two Silicon pressure sensitive core body respectively by stube cable, two blocks of electric signal processing and amplifying plates are connected with two Silicon pressure sensitive core body compensating circuit output signals respectively, processing signals through electric signal processing and amplifying plate is exported from electric connector by output port, the pressure X-over, Stainless Steel Shell and electric connector are integrally welded, embedding silica gel in this body, screw threads for fastening between two Silicon pressure sensitive core body and the pressure X-over, and be welded into a whole by attachment weld, fixed support is welded on the pressure X-over, integrated signal micro-processor interface circuit is welded on the two path signal processing and amplifying plate, two path signal processing and amplifying plate is fixed on the support by 4 mounting screws, two path signal processing and amplifying plate is connected with Silicon pressure sensitive core body compensating circuit input end and electric connector respectively by the connection lead-in wire that connects between Silicon pressure sensitive core body compensating circuit and the electric signal processing and amplifying plate between lead-in wire and electric signal processing and amplifying plate and the electric connector, the pressure X-over is connected with tested press device by the pressure interface screw thread, and the reinforced safety hole is fixed on the tested press device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202559274U CN201569531U (en) | 2009-11-27 | 2009-11-27 | Reliable-pressure sensor with high dual-redundancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202559274U CN201569531U (en) | 2009-11-27 | 2009-11-27 | Reliable-pressure sensor with high dual-redundancy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201569531U true CN201569531U (en) | 2010-09-01 |
Family
ID=42661824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202559274U Expired - Lifetime CN201569531U (en) | 2009-11-27 | 2009-11-27 | Reliable-pressure sensor with high dual-redundancy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201569531U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258841A (en) * | 2015-11-12 | 2016-01-20 | 刘辉 | Pressure sampling device and pressure sampling system comprising the device |
| CN111122027A (en) * | 2018-11-01 | 2020-05-08 | 中科院微电子研究所昆山分所 | Pressure sensor |
| CN114636506A (en) * | 2022-03-22 | 2022-06-17 | 厦门乃尔电子有限公司 | Dual-redundancy differential pressure sensor |
-
2009
- 2009-11-27 CN CN2009202559274U patent/CN201569531U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258841A (en) * | 2015-11-12 | 2016-01-20 | 刘辉 | Pressure sampling device and pressure sampling system comprising the device |
| CN111122027A (en) * | 2018-11-01 | 2020-05-08 | 中科院微电子研究所昆山分所 | Pressure sensor |
| CN114636506A (en) * | 2022-03-22 | 2022-06-17 | 厦门乃尔电子有限公司 | Dual-redundancy differential pressure sensor |
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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: 20100901 |