CN2170517Y - Capacitive humidity sensor - Google Patents
Capacitive humidity sensor Download PDFInfo
- Publication number
- CN2170517Y CN2170517Y CN 93237319 CN93237319U CN2170517Y CN 2170517 Y CN2170517 Y CN 2170517Y CN 93237319 CN93237319 CN 93237319 CN 93237319 U CN93237319 U CN 93237319U CN 2170517 Y CN2170517 Y CN 2170517Y
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- CN
- China
- Prior art keywords
- metal
- row
- metal probe
- probes
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a capacitive humidity sensor, which is composed of more than two rows of mutual parallel metal probes line fixed on an insulating board 2. Each row of metal probes line is provided with more than two metal probes 1, the metal probes in the same line are connected as an equipotential volume by conduction metal-foil. The odd metal probe and the even metal probe distributed on the insulating board are respectively used as the two pole boards of the sensor connected by wires. Owing to adopting multiple rows of metal probes 1 with multiple probes, the utility model enhances the sensitivity and the precision of the measurer sensor, and meanwhile, the utility model has the advantages of small size and convenient carrying.
Description
The utility model relates to a kind of capacitance type sensor, especially for the capacitance type humidity sensor of measuring graininess such as grain, cotton or powdered substance water percentage.
At present, China is used for the sensor of graininess such as grain, cotton or powdered substance measurement of water ratio, using comparatively simple two electrode plate to insert in the measured matter always, because it is the metal of two integral body, often relatively more difficult when inserting, its measurement sensitivity and precision are relatively poor simultaneously, if the measurement sensitivity and the precision that will improve, just must strengthen the area and the volume of battery lead plate, so just bring inconvenience to use.
At above-mentioned weak point, the utility model provides a kind of many rows the capacitance type humidity sensor of a plurality of metal probes.
Capacitance type humidity sensor provided by the utility model is to be made of the metal probe row who is parallel to each other more than two rows that are fixed on insulcrete 2, every row's metal probe row has two above metal probes 1,1 of same row's metal probe is linked to be an equipotential volume by conductive metal foil 3, is distributed in odd number metal probe row and even number metal control head on the insulcrete and arranges respectively by lead and connect two-plate as sensor; The conductive metal foil and the metal probe that connect same row's metal probe place respectively on the positive and negative surface of insulcrete (2).
The utility model is according to the humidity of media difference between the capacitor two-plate, causes principle design that this condenser capacity changes.For changing, the humidity that makes trace can cause a certain amount of capacitance variation, thereby improve the sensitivity and the precision of tester, adopt many row's multiheaded cylinder metal probes 3, increase the area of capacitor two-plate, as not adopting many row's multiheaded cylinder metal probes, certainly will to strengthen the area and the volume of metal bar, make troubles to measurement.
The utility model has improved the sensitivity and the precision of tester owing to adopt many row's multiheaded cylinder metal probes, has little, the easy to carry advantage of volume simultaneously.
Description of drawings:
Fig. 1 is the utility model front view;
Fig. 2 is the utility model vertical view;
Fig. 3 is the utility model rear view.
Provide embodiment of the present utility model with reference to the accompanying drawings.
Claims (2)
1, a kind of capacitance type humidity sensor, it is characterized in that: it is to be made of the metal probe row who is parallel to each other more than two rows that are fixed on insulcrete (2), every row's metal probe row has two above metal probes (1), be linked to be an equipotential volume by conductive metal foil (3) between same row's metal probe (1), be distributed in odd number metal probe row and even number metal control head on the insulcrete and arrange respectively by lead and connect two-plate as sensor.
2, capacitance type humidity sensor according to claim 1, it is characterized in that: metal probe (1) adopts the cylindrical metal probe, and the conductive metal foil (3) that connects each row's metal probe places respectively on the positive and negative surface of insulcrete (2) with the cylindrical metal probe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93237319 CN2170517Y (en) | 1993-07-23 | 1993-07-23 | Capacitive humidity sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93237319 CN2170517Y (en) | 1993-07-23 | 1993-07-23 | Capacitive humidity sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2170517Y true CN2170517Y (en) | 1994-06-29 |
Family
ID=33812293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 93237319 Expired - Fee Related CN2170517Y (en) | 1993-07-23 | 1993-07-23 | Capacitive humidity sensor |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2170517Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105486729A (en) * | 2016-01-18 | 2016-04-13 | 北京至感传感器技术研究院有限公司 | Humidity sensor |
-
1993
- 1993-07-23 CN CN 93237319 patent/CN2170517Y/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105486729A (en) * | 2016-01-18 | 2016-04-13 | 北京至感传感器技术研究院有限公司 | Humidity sensor |
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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 |