CN203337613U - Hydrogen sensor with ultrasonic waves - Google Patents
Hydrogen sensor with ultrasonic waves Download PDFInfo
- Publication number
- CN203337613U CN203337613U CN2013204849278U CN201320484927U CN203337613U CN 203337613 U CN203337613 U CN 203337613U CN 2013204849278 U CN2013204849278 U CN 2013204849278U CN 201320484927 U CN201320484927 U CN 201320484927U CN 203337613 U CN203337613 U CN 203337613U
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- hydrogen
- fiber optics
- gas sensor
- piezoelectric ceramics
- hydrogen sensor
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses a hydrogen sensor with ultrasonic waves. The hydrogen sensor comprises a piezoelectric ceramic (1) and an optical fiber (3). The piezoelectric ceramic (1) is fixed at one end of the optical fiber (3) through solid state glue (2), and hydrogen sensitive materials (4) are arranged at the other end of the optical fiber (3). The hydrogen sensor has the advantages of being high in sensitivity, safe to use and low in cost.
Description
Technical field
The utility model relates to a kind of ultrasonic sensor, particularly a kind of ultrasound wave hydrogen gas sensor based on piezoelectric and fiber optics.
Background technology
Ultrasonic sensor is the sensor that utilizes hyperacoustic characteristic to develop.Ultrasound wave is the mechanical wave of a kind of vibration frequency higher than sound wave, and generation of vibration is occurred under the excitation of voltage by the transducing wafer, and it has, and frequency is high, wavelength is short, the diffraction phenomenon is little, particularly good directionality, can become ray and the characteristics such as direction propagation.Ultrasound wave is very large to the penetrating power of liquid, solid, especially in the opaque solid of sunlight, and its degree of depth of penetrable tens meters.Ultrasound wave is encountered impurity or interphase and can be produced significantly to reflect to form and be reflected into echo, encounters the live animal physical efficiency and produces Doppler effect.Therefore ultrasound examination is widely used in the aspects such as industry, national defence, biomedicine.Using ultrasound wave as detection means, must produce ultrasound wave and receive ultrasound wave.The device that completes this function is exactly ultrasonic sensor, is called traditionally ultrasonic transducer or ultrasonic probe.The ultrasonic sensor main material has piezoelectric crystal (electrostriction) and ferronickel aluminium alloy (magnetostriction) two classes.Electrostrictive material has lead zirconate titanate (PZT) etc.The ultrasonic sensor that piezoelectric crystal forms is a kind of bilateral transducer, and it can be transformed into mechanical oscillation by electric energy and produce ultrasound wave, when it receives ultrasound wave simultaneously, also can be transformed into electric energy, so it can be divided into transmitter or receiver
Hydrogen is because the energy characteristics of itself are widely used in the fields such as aviation, new-energy automobile.But hydrogen is also the higher gas of a kind of flammable detonable a kind of danger, its safe handling is very important.And current hydrogen gas sensor usually sensitivity is not high, and cost is higher.
The utility model content
The purpose of this utility model is, a kind of hyperacoustic hydrogen gas sensor that utilizes is provided.The utlity model has highly sensitive, use safety and lower-cost characteristics.
The technical solution of the utility model: utilize hyperacoustic hydrogen gas sensor, it is characterized in that: comprise piezoelectric ceramics and fiber optics, described piezoelectric ceramics is fixed on an end of fiber optics through solid-state glue, and the other end of fiber optics is provided with the quick material of hydrogen.
The aforesaid utilization in hyperacoustic hydrogen gas sensor, described fiber optics is fixed on the center line of piezoelectric ceramics through solid-state glue.
The aforesaid utilization in hyperacoustic hydrogen gas sensor, the quick material of described hydrogen is an end that is plated in fiber optics.
The aforesaid utilization in hyperacoustic hydrogen gas sensor, the quick material of described hydrogen is SnO
2, Pt or Pd.
Compared with prior art, the utility model is that ultrasound wave again is transferred on piezoceramic transducer and converts electric signal output to after this end bounce-back by electric signal of piezoceramic transducer, ultrasonic transmission being arrived to an end of the quick material of hydrogen.When the quick material of hydrogen runs into hydrogen, because the quick material of hydrogen expands, the ultrasonic signal of bounce-back is weakened, thereby can judge concentration and the leak case of hydrogen.The utility model receives collection and the reception of material (piezoelectric ceramics) to signal by piezoelectricity, at the signal that interconnects with fiber optics and collection is come, with the form of ripple, in fiber optics, transmit, the propagation that keeps authenticity, the utlity model has cost low, simple in structure, highly sensitive and use safe characteristics.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Being labeled as in accompanying drawing: 1-piezoelectric ceramics, the solid-state glue of 2-, 3-fiber optics, the quick material of 4-hydrogen.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.Utilize hyperacoustic hydrogen gas sensor, form as shown in Figure 1, comprise piezoelectric ceramics 1 and fiber optics 3, described piezoelectric ceramics 1 is fixed on an end of fiber optics 3 through solid-state glue 2, and the other end of fiber optics 3 is provided with the quick material 4 of hydrogen.
Described fiber optics 3 is fixed on the center line of piezoelectric ceramics 1 through solid-state glue 2.
The quick material 4 of described hydrogen is ends that are plated in fiber optics 3.
The quick material 4 of described hydrogen is SnO
2, Pt or Pd.
Principle of work of the present utility model is as follows: ultrasonic transmission is arrived to an end of the quick material of hydrogen by giving electric signal of sensor (piezoelectric ceramics), ultrasound wave again is transferred on sensor (piezoelectric ceramics) and converts electric signal output to after this end bounce-back.When the quick material of hydrogen runs into hydrogen, because the quick material of hydrogen expands, the ultrasonic signal of bounce-back is weakened, thereby can judge concentration and the leak case of hydrogen.
Claims (4)
1. utilize hyperacoustic hydrogen gas sensor, it is characterized in that: comprise piezoelectric ceramics (1) and fiber optics (3), described piezoelectric ceramics (1) is fixed on an end of fiber optics (3) through solid-state glue (2), the other end of fiber optics (3) is provided with the quick material of hydrogen (4).
2. according to claim 1ly utilize hyperacoustic hydrogen gas sensor, it is characterized in that: described fiber optics (3) is fixed on the center line of piezoelectric ceramics (1) through solid-state glue (2).
3. according to claim 1ly utilize hyperacoustic hydrogen gas sensor, it is characterized in that: the quick material of described hydrogen (4) is an end that is plated in fiber optics (3).
4. describedly utilize hyperacoustic hydrogen gas sensor according to claim 1,2 or 3, it is characterized in that: the quick material of described hydrogen (4) is SnO
2, Pt or Pd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204849278U CN203337613U (en) | 2013-08-09 | 2013-08-09 | Hydrogen sensor with ultrasonic waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204849278U CN203337613U (en) | 2013-08-09 | 2013-08-09 | Hydrogen sensor with ultrasonic waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203337613U true CN203337613U (en) | 2013-12-11 |
Family
ID=49706281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204849278U Expired - Fee Related CN203337613U (en) | 2013-08-09 | 2013-08-09 | Hydrogen sensor with ultrasonic waves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203337613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076718A (en) * | 2014-08-19 | 2017-08-18 | Abb瑞士股份有限公司 | hydrogen sensor with protective layer |
-
2013
- 2013-08-09 CN CN2013204849278U patent/CN203337613U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076718A (en) * | 2014-08-19 | 2017-08-18 | Abb瑞士股份有限公司 | hydrogen sensor with protective layer |
| CN107076718B (en) * | 2014-08-19 | 2019-08-20 | Abb瑞士股份有限公司 | Hydrogen sensor with protective layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20140809 |
|
| EXPY | Termination of patent right or utility model |