CN103743423A - Novel high-frequency ultrasonic sensor - Google Patents
Novel high-frequency ultrasonic sensor Download PDFInfo
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- CN103743423A CN103743423A CN201310711783.XA CN201310711783A CN103743423A CN 103743423 A CN103743423 A CN 103743423A CN 201310711783 A CN201310711783 A CN 201310711783A CN 103743423 A CN103743423 A CN 103743423A
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Abstract
The invention belongs to the field of ultrasonic sensors and specifically relates to a novel high-frequency ultrasonic sensor which includes a tubular casing. A matching layer is arranged to be inserted into one end of the casing. A piezoelectric ceramic is fixedly connected with the matching layer. The sensor also includes a shielding wire connected with a cathode and anode of the piezoelectric ceramic. The sensor is characterized in that a protective sleeve is sleeved on the piezoelectric ceramic; the casing is filled with filling glue; and a pouring sealant which plays a sealing role is arranged at the other end of the casing. The novel high-frequency ultrasonic sensor has the advantages of being high in sensitivity, low in cost and applicable to a severe environment.
Description
Technical field
The invention belongs to ultrasonic sensor field, particularly a kind of novel high-frequency rate ultrasonic sensor.
Background technology
Along with the development of electron trade, the application of ultrasonic sensor is more and more wider, type is also more and more, various Novel ultrasonic wave sensors are also progressively developed, a kind of novel high-frequency rate ultrasonic sensor that the present invention is invented mainly for being applied to comparison rugged environment in industrial automatic control.
Existing sensor adopts aluminium casing, piezoelectric ceramics carrys out transmission of signal by housing, and there is air in the inner space of existing sensor, there is following problem in above-mentioned existing sensor: because signal transmits by aluminium casing, in transmittance process, there is decay in signal, affect the sensitivity of sensor, the housing of sensor adopts aluminum profile extrusion to form simultaneously, its material cost and processing cost are higher, there is air in sensor internal in addition, in the hot environment of industrial application, inner air expanded by heating, form internal pressure, sensor internal device is formed to acting force, affect the normal work of sensor internal device, may cause the inefficacy of sensor.
Summary of the invention
For the deficiencies in the prior art, the present invention has designed a kind of highly sensitive, cost is low be applicable to rugged surroundings based on piezoelectric ceramics high sensor.
The present invention is achieved through the following technical solutions:
A kind of novel high-frequency rate ultrasonic sensor; it comprises the housing of tubulose; one end of described housing embeds and is provided with matching layer; on described matching layer, be fixedly connected with piezoelectric ceramics; also comprise the shielding line being connected with piezoelectric ceramics both positive and negative polarity; it is characterized in that: on described piezoelectric ceramics, be arranged with protective sleeve, be filled with filling glue in described housing, the other end of housing is provided with the casting glue sealing.
The inwall of described housing has also been provided with the copper foil layer of shielding action.
Described protective sleeve is cork cover.
Described piezoelectric ceramics comprises columniform piezoelectric ceramic piece, the upper surface of piezoelectric ceramic piece is provided with anodal silver layer, the top of the side face of piezoelectric ceramic piece is spacer region, the bottom of the side face of piezoelectric ceramic piece arranges conductive silver layer, the lower surface of piezoelectric ceramic piece is provided with negative pole silver layer, and negative pole silver layer is communicated with conductive silver layer.
Described housing is adopted made of plastic.
In sum, the present invention has following beneficial effect:
The present invention adopts shielding line to be connected with the both positive and negative polarity of piezoelectric ceramics, without the housing through sensor, carry out transmission of signal, thereby reduced the loss in signal transduction process, reduced the decay of signal, improved the sensitivity of sensor, sensor of the present invention is a solid in addition, sensor internal does not have air, in hot environment, the deflection of sensor internal is little, reduced the impact of environment on working sensor, there is wider usable range, housing of the present invention is adopted made of plastic simultaneously, effectively reduce material cost of the present invention and processing cost.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, the present invention is aforesaid will be become apparent with other object, feature and advantage.Wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the cut-open view of piezoelectric ceramics;
In figure, 1 is matching layer, and 2 is protective sleeve, and 3 is copper foil layer, and 4 is housing, and 5 is casting glue, and 6 is shielding line, and 7 is piezoelectric ceramics, and 8 for filling glue, and 71 is piezoelectric ceramic piece, and 72 is anodal silver layer, and 73 is spacer region, and 74 is conductive silver layer, and 75 is negative pole silver layer.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
A kind of novel high-frequency rate ultrasonic sensor as depicted in figs. 1 and 2, it comprises the housing 4 of tubulose, one end of described housing 4 embeds and is provided with matching layer 1, on described matching layer 1, be fixedly connected with piezoelectric ceramics 7, also comprise the shielding line 6 being connected with piezoelectric ceramics both positive and negative polarity, it is characterized in that: on described piezoelectric ceramics 7, be arranged with protective sleeve 2, in described housing 4, be filled with and fill glue 8, the other end of housing 4 is provided with the casting glue 5 sealing, filling glue described in the present invention is epoxy resin, the present invention is by filling glue in enclosure interior, discharge the air in housing, overcome expanding in sensor in hot environment, guaranteed the normal work of sensor.
The inwall of described housing has also been provided with the copper foil layer 3 of shielding action, and copper foil layer can shield extraneous undesired signal, guarantees normal work and the precision of sensor.
Described protective sleeve 2 is cork cover, adopts cork cover to reduce costs.
Described piezoelectric ceramics comprises columniform piezoelectric ceramic piece 71, the upper surface of piezoelectric ceramic piece 71 is provided with anodal silver layer 72, the top of the side face of piezoelectric ceramic piece 71 is spacer region 73, the bottom of the side face of piezoelectric ceramic piece 71 arranges conductive silver layer 74, the lower surface of piezoelectric ceramic piece 71 is provided with negative pole silver layer 75, negative pole silver layer 75 is communicated with conductive silver layer 74, the both positive and negative polarity of the piezoelectric ceramics in the present invention is directly connected with shielding line, without the housing by sensor, carry out transmission of signal, reduce the loss of signal, improved the sensitivity of sensor.
Described housing 4 is adopted made of plastic.
In sum, the present invention has following beneficial effect:
The present invention adopts shielding line to be connected with the both positive and negative polarity of piezoelectric ceramics, without the housing through sensor, carry out transmission of signal, thereby reduced the loss in signal transduction process, reduced the decay of signal, improved the sensitivity of sensor, sensor of the present invention is a solid in addition, sensor internal does not have air, in hot environment, the deflection of sensor internal is little, reduced the impact of environment on working sensor, there is wider usable range, housing of the present invention is adopted made of plastic simultaneously, effectively reduce material cost of the present invention and processing cost.
The present invention is not limited to described embodiment, and those skilled in the art, not departing from spirit of the present invention openly in scope, still can do some corrections or change, therefore the scope that the scope of the present invention limits with claims is as the criterion.
Claims (5)
1. a novel high-frequency rate ultrasonic sensor; it comprises the housing of tubulose; one end of described housing embeds and is provided with matching layer; on described matching layer, be fixedly connected with piezoelectric ceramics; also comprise the shielding line being connected with piezoelectric ceramics both positive and negative polarity; it is characterized in that: on described piezoelectric ceramics, be arranged with protective sleeve, be filled with filling glue in described housing, the other end of housing is provided with the casting glue sealing.
2. a kind of novel high-frequency rate ultrasonic sensor according to claim 1, is characterized in that: the inwall of described housing has also been provided with the copper foil layer of shielding action.
3. a kind of novel high-frequency rate ultrasonic sensor according to claim 1, is characterized in that: described protective sleeve is cork cover.
4. a kind of novel high-frequency rate ultrasonic sensor according to claim 1, it is characterized in that: described piezoelectric ceramics comprises columniform piezoelectric ceramic piece, the upper surface of piezoelectric ceramic piece is provided with anodal silver layer, the top of the side face of piezoelectric ceramic piece is spacer region, the bottom of the side face of piezoelectric ceramic piece arranges conductive silver layer, the lower surface of piezoelectric ceramic piece is provided with negative pole silver layer, and negative pole silver layer is communicated with conductive silver layer.
5. a kind of novel high-frequency rate ultrasonic sensor according to claim 1, is characterized in that: described housing is adopted made of plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711783.XA CN103743423A (en) | 2013-12-20 | 2013-12-20 | Novel high-frequency ultrasonic sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711783.XA CN103743423A (en) | 2013-12-20 | 2013-12-20 | Novel high-frequency ultrasonic sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103743423A true CN103743423A (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310711783.XA Pending CN103743423A (en) | 2013-12-20 | 2013-12-20 | Novel high-frequency ultrasonic sensor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535086A (en) * | 2014-12-26 | 2015-04-22 | 汉得利（常州）电子股份有限公司 | Novel open type sensor |
| WO2019051921A1 (en) * | 2017-09-18 | 2019-03-21 | 苏州市易德龙电子元件科技有限公司 | Ultrasonic sensor |
| CN110531367A (en) * | 2019-10-14 | 2019-12-03 | 杭州富阳锐明科技有限公司 | A kind of automobile ultrasonic sensor based on piezoelectric ceramics electricity ratio |
| CN115825963A (en) * | 2022-12-14 | 2023-03-21 | 成都汇通西电电子有限公司 | Ultrasonic sensor |
| CN117664203A (en) * | 2024-01-31 | 2024-03-08 | 成都楷模电子科技有限公司 | Novel high-frequency ultrasonic sensor |
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| CN2082849U (en) * | 1990-09-25 | 1991-08-14 | 东北内蒙古煤炭工业联合公司沈阳煤矿设计院 | Piezoelectric ceramic ultrasonic transducer |
| EP1237148A2 (en) * | 2001-02-28 | 2002-09-04 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic transducer, method of manufacture, and use in a ultrasonic flowmeter |
| CN201408266Y (en) * | 2009-04-30 | 2010-02-17 | 中国船舶重工集团公司第七一五研究所 | Ultrasonic distance measuring probe |
| CN202196077U (en) * | 2011-07-19 | 2012-04-18 | 江苏物联网研究发展中心 | High precision ultrasonic sensor |
| CN102506929A (en) * | 2011-11-15 | 2012-06-20 | 上官明禹 | High-pressure-resistant air-coupled ultrasonic transducer and manufacturing method thereof |
| CN103076610A (en) * | 2012-12-30 | 2013-05-01 | 常州波速传感器有限公司 | Ultrasonic transducer for automatically parking |
| CN203642945U (en) * | 2013-12-20 | 2014-06-11 | 常州波速传感器有限公司 | Novel high-frequency ultrasonic sensor |
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2013
- 2013-12-20 CN CN201310711783.XA patent/CN103743423A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2082849U (en) * | 1990-09-25 | 1991-08-14 | 东北内蒙古煤炭工业联合公司沈阳煤矿设计院 | Piezoelectric ceramic ultrasonic transducer |
| EP1237148A2 (en) * | 2001-02-28 | 2002-09-04 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic transducer, method of manufacture, and use in a ultrasonic flowmeter |
| CN201408266Y (en) * | 2009-04-30 | 2010-02-17 | 中国船舶重工集团公司第七一五研究所 | Ultrasonic distance measuring probe |
| CN202196077U (en) * | 2011-07-19 | 2012-04-18 | 江苏物联网研究发展中心 | High precision ultrasonic sensor |
| CN102506929A (en) * | 2011-11-15 | 2012-06-20 | 上官明禹 | High-pressure-resistant air-coupled ultrasonic transducer and manufacturing method thereof |
| CN103076610A (en) * | 2012-12-30 | 2013-05-01 | 常州波速传感器有限公司 | Ultrasonic transducer for automatically parking |
| CN203642945U (en) * | 2013-12-20 | 2014-06-11 | 常州波速传感器有限公司 | Novel high-frequency ultrasonic sensor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535086A (en) * | 2014-12-26 | 2015-04-22 | 汉得利（常州）电子股份有限公司 | Novel open type sensor |
| WO2019051921A1 (en) * | 2017-09-18 | 2019-03-21 | 苏州市易德龙电子元件科技有限公司 | Ultrasonic sensor |
| CN110531367A (en) * | 2019-10-14 | 2019-12-03 | 杭州富阳锐明科技有限公司 | A kind of automobile ultrasonic sensor based on piezoelectric ceramics electricity ratio |
| CN115825963A (en) * | 2022-12-14 | 2023-03-21 | 成都汇通西电电子有限公司 | Ultrasonic sensor |
| CN115825963B (en) * | 2022-12-14 | 2024-03-15 | 成都汇通西电电子有限公司 | Ultrasonic sensor |
| CN117664203A (en) * | 2024-01-31 | 2024-03-08 | 成都楷模电子科技有限公司 | Novel high-frequency ultrasonic sensor |
| CN117664203B (en) * | 2024-01-31 | 2024-04-26 | 成都楷模电子科技有限公司 | High-frequency ultrasonic sensor |
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Application publication date: 20140423 |
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