CN2807222Y - Audio frequency sensor for measuring drip in cave - Google Patents
Audio frequency sensor for measuring drip in cave Download PDFInfo
- Publication number
- CN2807222Y CN2807222Y CN 200520022530 CN200520022530U CN2807222Y CN 2807222 Y CN2807222 Y CN 2807222Y CN 200520022530 CN200520022530 CN 200520022530 CN 200520022530 U CN200520022530 U CN 200520022530U CN 2807222 Y CN2807222 Y CN 2807222Y
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- voice coil
- cave
- loudspeaker voice
- resonator
- measuring
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Abstract
The utility model relates to an audio frequency sensor for measuring drips in a cave, which belongs to a measuring instrument, particularly a geology special measuring instrument for measuring the drips in the cave. A machine body of the sensor is provided with a resonance cavity, and a loudspeaker paper basin is installed on the top of the resonance cavity. A sensing surface is sealed and covered on an upper opening of loudspeaker paper basin, the lower end of the loudspeaker paper basin is connected with a voice ring and a permanent magnet is arranged in the position of the voice ring in the resonance cavity. The voice ring is connected with a testing circuit through a coupling coil. The utility model has the advantages of simple structure, low cost, the realization of localization and high sensing precision and stable operation for a long time can be ensured.
Description
Technical field
The utility model belongs to the test record instrument, especially for geology stalagmite research field, and the special measurement instrument that cave dripping water is measured.
Technical background
The inner structure of stalagmite and historical climate have certain corresponding relation in the cave, by the annual layer of research stalagmite, can rebuild past a century even the climate change before thousand.By several at least water years top, hole water droplet being observed and record, could obtain in the hole CO of air carbon dioxide, temperature, humidity, the temperature of dripping, pH value, conductance, Ca2+, dissolving more accurately
2, drip rate, drip parameters such as amount, thereby just can understand the stalagmite year climatic elements that reflected of layer thickness variation more exactly.The cave dripping water sensor is the prerequisite and the key of carrying out above-mentioned record, does not have the reliable sensing of front end, and the various water droplet tests and the parameter of rear end are all meaningless.Because the above-mentioned instrument of domestic no manufacturer production, original research work have only estimation artificially or use import instrument.Artificial estimation is difficult to accomplish long-term observation, and its precision is also very poor; Import instrument does not have normal supply channel, the price height, and after sale service inconvenience can not be appended own required function.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of cave dripping water audio sensor, and it is simple in structure, low cost of manufacture, and the induction precision height can guarantee long-time steady operation.
Solving the scheme that technical matters of the present utility model adopts is: the body of sensor adopts resonator, diffuser is installed at the resonator top, sensitive face in diffuser upper shed capping, and the lower end connects voice coil loudspeaker voice coil, permanent magnet is equipped with in voice coil loudspeaker voice coil position in resonator, and voice coil loudspeaker voice coil connects test circuit by coupling coil.
What the technical program adopted is the acoustic-electric sensing, utilized the structure of resonator and diffuser, the water droplet that energy is very weak acts on the sensitive face of diffuser top, and the water droplet sound wave makes diffuser produce double vibrations by the effect of resonator, thereby drive the voice coil loudspeaker voice coil motion, voice coil loudspeaker voice coil is cutting magnetic line in the magnetic field of permanent magnet, can produce electric signal in voice coil loudspeaker voice coil, passes through coupling coil, signal amplitude is amplified, just can detect the drippage and the intensity of water droplet easily by test circuit.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Each label is represented successively among the figure: resonator 1, cone brandreth 2, voice coil suspension 3, diffuser 4, permanent magnet 5, voice coil loudspeaker voice coil 6, soft iron post 7, primary coil 8, secondary coil 9, test circuit 10, sensitive face 11.
Embodiment
Referring to Fig. 1; the profile of this sensor is a casing; its body adopts conventional resonator 1 structure; diffuser 4 is installed at top at resonator 1; sensitive face 11 in the upper shed capping of diffuser 4; it also plays a protective role except the sound and the intensity of water droplet collision are passed to the diffuser 4, avoids each components and parts of its below to be subjected to the erosion of water.The lower end of diffuser 4 is connecting the voice coil loudspeaker voice coil 6 that lead is wound in, a soft iron post 7 is inserted at middle part at voice coil loudspeaker voice coil 6, and permanent magnet 5 is equipped with in the position of the voice coil loudspeaker voice coil 6 in resonator 1, and voice coil loudspeaker voice coil 6 is enclosed within the annular permanent-magnet body 7, and this can farthest obtain induction current in voice coil loudspeaker voice coil 6.The two ends of voice coil loudspeaker voice coil 6 connect primary coil 8, wherein in the required secondary coil 9 of the sense electrical signal of Chan Shenging, amplifying signal are passed to connected test circuit 10.
With top, this device sensing hole water droplet, employing be acoustic-electric sensing technology scheme simple in structure, the comparable external similar instrument of its cost reduces by 3～4 times, significantly reduces the investment of equipment, can realize production domesticization; Adopt the harmonic technology of acoustics to combine with the electromagnetic induction technology, but simplified structure, the stability that assurance works long hours can improve the precision of induction simultaneously again, substantially can not occur leakage inductance should, be highly preferred a kind of mode in the sensing modes such as common pressure sensing, conduction sensing.
Claims (2)
1, a kind of cave dripping water audio sensor, it is characterized in that: body is a resonator, diffuser is installed at the resonator top, sensitive face in diffuser upper shed capping, and the lower end connects voice coil loudspeaker voice coil, permanent magnet is equipped with in voice coil loudspeaker voice coil position in resonator, and voice coil loudspeaker voice coil connects test circuit by coupling coil.
2, by the described cave dripping water audio sensor of claim 1, its feature is being: a soft iron post is inserted at the middle part at voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil is enclosed within the annular permanent-magnet body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520022530 CN2807222Y (en) | 2005-06-21 | 2005-06-21 | Audio frequency sensor for measuring drip in cave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520022530 CN2807222Y (en) | 2005-06-21 | 2005-06-21 | Audio frequency sensor for measuring drip in cave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2807222Y true CN2807222Y (en) | 2006-08-16 |
Family
ID=36921522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520022530 Expired - Fee Related CN2807222Y (en) | 2005-06-21 | 2005-06-21 | Audio frequency sensor for measuring drip in cave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2807222Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088663A (en) * | 2014-06-24 | 2014-10-08 | 高渐飞 | Method and device for monitoring dropping water flow of karst cave |
| TWI481802B (en) * | 2013-01-17 | 2015-04-21 | Signal Technology Instr Inc | Air conditioning system |
| CN105486885A (en) * | 2015-12-23 | 2016-04-13 | 云南大学 | High precision karst cave water dripping sensor and collection device |
| CN107576382A (en) * | 2017-09-21 | 2018-01-12 | 深圳三马电器有限公司 | Noise vibration sensor and transformer noise auto testing instrument |
-
2005
- 2005-06-21 CN CN 200520022530 patent/CN2807222Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI481802B (en) * | 2013-01-17 | 2015-04-21 | Signal Technology Instr Inc | Air conditioning system |
| CN104088663A (en) * | 2014-06-24 | 2014-10-08 | 高渐飞 | Method and device for monitoring dropping water flow of karst cave |
| CN105486885A (en) * | 2015-12-23 | 2016-04-13 | 云南大学 | High precision karst cave water dripping sensor and collection device |
| CN105486885B (en) * | 2015-12-23 | 2023-06-20 | 云南大学 | High-precision karst cave drip sensor and collecting device thereof |
| CN107576382A (en) * | 2017-09-21 | 2018-01-12 | 深圳三马电器有限公司 | Noise vibration sensor and transformer noise auto testing instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |