CN201107149Y - High reliable electronic type automobile pressure sensor - Google Patents
High reliable electronic type automobile pressure sensor Download PDFInfo
- Publication number
- CN201107149Y CN201107149Y CNU2007200467122U CN200720046712U CN201107149Y CN 201107149 Y CN201107149 Y CN 201107149Y CN U2007200467122 U CNU2007200467122 U CN U2007200467122U CN 200720046712 U CN200720046712 U CN 200720046712U CN 201107149 Y CN201107149 Y CN 201107149Y
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- pressure sensor
- ceramic
- integrated circuit
- sensor
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Abstract
The utility model relates to a high-reliability electronic automobile pressure sensor, which aims to solve the problems of bad reliability and low precision of the existing pressure sensor. The high-reliability electronic automobile pressure sensor comprises a shell, wherein, one end of the shell is provided with a source nipple, and the other end is provided with a connector in the sealing way; a ceramic pressure sensor and a conditioning integrated circuit for sensing a signal are fixedly arranged in the shell; the ceramic pressure sensor is electrically connected with the conditioning integrated circuit; wherein, a ceramic elastic diaphragm of the ceramic pressure sensor intersects an annulus ceramic base to a whole, thereby avoiding the generation of stress concentration and improving the overload capacity of the sensor and the operational reliability; the conditioning integrated circuit is an automobile-level special integrated circuit. The sensor and the stainless steel shell adopt the precise card-type assembly technology, thereby effectively preventing the sensor from generating the subsidiary stress during the assembly process, and having high stability. The high-reliability electronic automobile pressure sensor has high sensing precision and high operational reliability.
Description
Technical field
The utility model relates to pressure transducer, especially relates to the pressure transducer that uses on the automobile.
Background technology
Present automobile-used pressure transducer adopts the mechanical compression sensor more, and it is actually a WW POT, and the contact links by mechanical conveyance system and automobile oil circuit or gas circuit, when oil pressure or air pressure change, and the pressure drag value generation respective change of sensing element.This mechanical compression sensor disadvantage is a poor reliability.As everyone knows, the car and boat engine is operated under high temperature, vibration and the impact conditions for a long time, easily causes the mechanical compression sensor to press the contact contact unreliable, even produces resonance with engine; Secondly, mechanical conveyance system can not transmit pressure signal linearly under the long-term work state, and owing to the metal fatigue effect produces creep.Another great critical defect of mechanical compression sensor is that pressure signal and output resistance are not pure linear relationship in whole range ability, but the stepped relation, so precision is extremely low.
Over past ten years, various countries begin to have researched and developed employing strain chip and diffuse si formula engine oil pressure pickup.Foil gauge is because will adopt adhesive glue to be bonded on the tinsel, thereby the linear sensor precision is low, and obvious hysteresis is arranged, and strain gauge pressure sensor not only temperature characterisitic difference but also reliability are low, can not be used for the automobile pressure transducer.American TI Company adopts the oil-filled core body of silicon piezoresistance type pressure sensor to be used for the automobile pressure transducer, though increase on the performance, price is high-leveled and difficult to satisfy market demand.
The utility model content
The utility model provides a kind of reliability high precision high automobile pressure transducer at the low problem of existing pressure transducer poor reliability precision.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
Highly reliable electronic type automobile pressure transducer, comprise housing, one end of housing is provided with hickey, the other end packoff connector of housing, the conditioning integrated circuit of housing inner fixing device ceramic pressure sensor and transducing signal, ceramic pressure sensor is electrically connected with described conditioning integrated circuit.
As further technical scheme, device has O-ring seal between housing and ceramic pressure sensor, sequence unit damped ring and collar between ceramic pressure sensor and the described conditioning integrated circuit.Ceramic pressure sensor is electrically connected by flexible printed circuit board with the conditioning integrated circuit.
Technique effect of the present utility model is: adopt ceramic pressure sensor as pressure sensor, ceramic pressure sensor is a kind of electronic pressure sensor, and its precision, linearity, repeatability and hysteresis increase significantly than mechanical compression sensor.Sensor and stainless steel casing adopt accurate cassette package technique, effectively prevent the extra-stress that produces in the sensor assembling process, sensor stability height.Mechanical interface adopts hickey, mechanical attachment reliability height; Hermetically sealed connector is adopted in electric connection, and electric connection is safe and reliable.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
As shown in Figure 1, the utility model comprises Stainless Steel Shell 4, and an end of housing 4 is provided with hickey, and hickey adopts conventional NPT standard.Fixed order mounting ceramics pressure transducer 6, nylon damped ring 7 and collar 8 in the housing 4, make and constitute the cassette assembling between sensor 6 and the stainless steel casing 4, wherein nylon damped ring 7 can effectively prevent the extra-stress that produces in the sensor assembling process, and collar 8 plays ceramic pressure sensor 6 is played the axial location effect.The HB2018 type ceramic pressure sensor that ceramic pressure sensor 6 adopts Wuxi City sea cowry Microelectronic Institute to produce, this ceramic pressure sensor 6 adopts Al
2O
3Pottery, corrosion-resistant (not needing oil-filled core body), cost is low, it has the sensing good linearity, sensing degree of accuracy height and temperature are floated little electric property, this ceramic pressure sensor 6 is in aggregates by round ceramic flexible sheet and the crossing binding of passive annular base of ceramic, the surface of round ceramic flexible sheet is manufactured with the strain bridge circuit, the crossing junction of round ceramic flexible sheet and annular base of ceramic internal face is a cambered surface, in the arc shape body region, pressure is in homogeneously dispersed state, thereby avoid producing the disadvantage that shearing force was concentrated and formed to stress, can greatly improve the overload capacity and the functional reliability of ceramic pressure sensor 6.Between sensor 6 and the housing 4 O-ring seal 5 is set, O-ring seal 5 adopts viton seal rings, and high-low temperature resistant, fire-retardant, oil resistant and resistance to chemical attack have improved sensor environmental suitability and reliability in the car and boat field.The three core self-locking seal connectors 1 that other end device AMP Inc. of housing 4 produces make that electric connection is safe and reliable, are tightly connected between connector 1 and the housing 4.The end fitting conditioning integrated circuit 2 of connector 1 inboard, the ZH1764 type signal condition integrated circuit that this integrated circuit 2 adopts Wuxi City sea cowry Microelectronic Institute to produce, it is automotive grade (40 ℃-125 a ℃) special IC, it can prevent the automotive ignition system strong electromagnetic that other contact part produced of unifying, and reliability is high.Sensor 6 is electrically connected by the circuit bar on the flexible printed circuit board 3 between the integrated circuit 2 with conditioning, and its advantage is the stability of vibration height, and contact is reliable.
Claims (4)
1, highly reliable electronic type automobile pressure transducer, comprise housing, one end of housing is provided with hickey, the other end packoff connector of housing, the conditioning integrated circuit that it is characterized in that housing inner fixing device ceramic pressure sensor and transducing signal, ceramic pressure sensor is electrically connected with described conditioning integrated circuit.
2, according to the described highly reliable electronic type automobile pressure transducer of claim 1, it is characterized in that described ceramic pressure sensor is in aggregates by round ceramic flexible sheet and the crossing binding of passive annular base of ceramic, the surface of round ceramic flexible sheet is manufactured with the strain bridge circuit, and the crossing junction of described round ceramic flexible sheet and annular base of ceramic internal face is a cambered surface.
3, according to the described highly reliable electronic type automobile pressure transducer of claim 1, it is characterized in that device has O-ring seal between housing and the ceramic pressure sensor, sequence unit damped ring and collar between ceramic pressure sensor and the described conditioning integrated circuit.
4,, it is characterized in that described ceramic pressure sensor is electrically connected by flexible printed circuit board with the conditioning integrated circuit according to the described highly reliable electronic type automobile pressure transducer of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200467122U CN201107149Y (en) | 2007-09-18 | 2007-09-18 | High reliable electronic type automobile pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200467122U CN201107149Y (en) | 2007-09-18 | 2007-09-18 | High reliable electronic type automobile pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201107149Y true CN201107149Y (en) | 2008-08-27 |
Family
ID=39958956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200467122U Expired - Lifetime CN201107149Y (en) | 2007-09-18 | 2007-09-18 | High reliable electronic type automobile pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201107149Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806649A (en) * | 2010-03-08 | 2010-08-18 | 芜湖通和汽车管路系统有限公司 | Ceramic pressure transmitter and manufacturing method thereof |
| CN102384808A (en) * | 2011-11-03 | 2012-03-21 | 浙江庆源车业部件有限公司 | Pressure transmitting sensor |
| CN103376174A (en) * | 2012-04-27 | 2013-10-30 | 鸿富锦精密工业（深圳）有限公司 | Pressure detecting device |
| CN103940546A (en) * | 2014-04-24 | 2014-07-23 | 无锡中科恒捷汽车电子有限公司 | Electronic type oil pressure sensor based on ceramic pressure chip |
| CN104062046A (en) * | 2013-03-21 | 2014-09-24 | 精亮科技（深圳）有限公司 | Pressure sensor |
| CN111829717A (en) * | 2019-04-16 | 2020-10-27 | 矢崎总业株式会社 | Vehicle-mounted oil sensor |
-
2007
- 2007-09-18 CN CNU2007200467122U patent/CN201107149Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806649A (en) * | 2010-03-08 | 2010-08-18 | 芜湖通和汽车管路系统有限公司 | Ceramic pressure transmitter and manufacturing method thereof |
| CN102384808A (en) * | 2011-11-03 | 2012-03-21 | 浙江庆源车业部件有限公司 | Pressure transmitting sensor |
| CN102384808B (en) * | 2011-11-03 | 2015-10-07 | 浙江庆源车业部件有限公司 | A kind of pressure transmitting sensor |
| CN103376174A (en) * | 2012-04-27 | 2013-10-30 | 鸿富锦精密工业（深圳）有限公司 | Pressure detecting device |
| CN103376174B (en) * | 2012-04-27 | 2016-03-09 | 鸿富锦精密工业（深圳）有限公司 | Pressure-detecting device |
| CN104062046A (en) * | 2013-03-21 | 2014-09-24 | 精亮科技（深圳）有限公司 | Pressure sensor |
| CN104062046B (en) * | 2013-03-21 | 2016-06-22 | 精亮科技（深圳）有限公司 | A kind of pressure transducer |
| CN103940546A (en) * | 2014-04-24 | 2014-07-23 | 无锡中科恒捷汽车电子有限公司 | Electronic type oil pressure sensor based on ceramic pressure chip |
| CN111829717A (en) * | 2019-04-16 | 2020-10-27 | 矢崎总业株式会社 | Vehicle-mounted oil sensor |
| CN111829717B (en) * | 2019-04-16 | 2023-05-26 | 矢崎总业株式会社 | Vehicle-mounted oil sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING HUANKE ELECTRONIC TECH CO., LTD Free format text: FORMER OWNER: XU XINGCAI Effective date: 20100506 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214062 56-602, XITAIHU GARDEN, WUXI CITY, JIANGSU PROVINCE TO: 210038 NO.23, HENGJING ROAD, NANJING ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, NANJING CITY, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100506 Address after: 210038, No. 23, Heng Jing Road, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu Patentee after: NANJING HUANKE ELECTRONIC TECHNOLOGY CO., LTD. Address before: 214062 West Garden, Wuxi, Jiangsu, 56-602, Taihu Patentee before: Xu Xingcai |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080827 |
|
| CX01 | Expiry of patent term |