CN203824662U - Temperature sensor - Google Patents
Temperature sensor Download PDFInfo
- Publication number
- CN203824662U CN203824662U CN201420249277.3U CN201420249277U CN203824662U CN 203824662 U CN203824662 U CN 203824662U CN 201420249277 U CN201420249277 U CN 201420249277U CN 203824662 U CN203824662 U CN 203824662U
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- China
- Prior art keywords
- temperature sensor
- parallel plate
- plate electrode
- inductor
- plug
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Abstract
The utility model discloses a temperature sensor. The temperature sensor comprises a casing and a hollow tube arranged in the casing, wherein the casing internally has an accommodating space, an opening end of the casing is provided with a plug, the plug is provided with a pair of wiring pins, two ends of the hollow tube are provided with two parallel pole plates, the two parallel pole plates are in sealing matching with the hollow tube, an inductor is arranged between the two parallel pole plates, two ends of the inductor respectively press against the two parallel pole plates to form a simple capacitor, and the first pole plate and the second pole plate are electrically connected with the two wiring pins of the plug. The temperature sensor detects temperature of a detected object according to capacity of the capacitor, the capacitor has direct current power consumption, only a small AC signal is needed during capacitor measurement, so the temperature sensor has an advantage of low power consumption.
Description
Technical field
The utility model relates to a kind of sensor, particularly relates to a kind of temperature sensor.
Background technology
Because temperature and daily life are closely related, therefore people have started very early for the measurement of temperature and the exploitation of temperature sensor.Existing temperature sensor is of a great variety a few days ago, and temperature-measurement principle is different, and every physics that has a temperature effect or chemical process can be as the temperature-measurement principles of temperature sensor.Conventional temperature sensor power consumption is large, and self-heating also can affect to measurement result.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of highly sensitive, and temperature sensor low in energy consumption.
For addressing the above problem, the utility model provides a kind of temperature sensor, described temperature sensor comprises housing, the first parallel plate electrode, the second parallel plate electrode and inductor, in described housing, there is accommodation space, described shell nozzle end is provided with plug, described plug is provided with a pair of wiring pin, described the first parallel plate electrode is fixed on one end of inner walls, on the fixing described inductor of described the second parallel plate electrode, described inductor is fixed on the other end of described inner walls, form an easy electric capacity, described the first parallel plate electrode, the second parallel plate electrode is electrically connected with two wiring pins of described plug respectively.
Further, be provided with a dividing plate in described housing, housing is divided into the first cavity and the second cavity by described dividing plate, and the first parallel plate electrode, the second parallel plate electrode and inductor are all positioned at described the first cavity, and described plug is positioned at described the second cavity.
Further, the junction of described plug and the second cavity is provided with ring seal packing ring.
Further, the manufactured materials of described inductor is the unsettled material of thermal expansion.
The utility model temperature sensor utilizes expanding with heat and contract with cold of inductor, changes capacitance size, realizes the detection to temperature, can accurately detect the temperature of body to be measured.
Brief description of the drawings
Fig. 1 is the structural representation of the preferred embodiments of the utility model temperature sensor.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the preferred embodiments of the utility model temperature sensor comprises housing 1, the first parallel plate electrode 2, the second parallel plate electrode 3 and inductor 4, in described housing 1, there is accommodation space, described housing 1 openend is provided with plug, described plug is provided with a pair of wiring pin 5, described the first parallel plate electrode 2 is fixed on one end of housing 1 inwall, on the fixing described inductor 4 of described the second parallel plate electrode 3, described inductor 4 is fixed on the other end of described housing 1 inwall, form an easy electric capacity, described the first parallel plate electrode 2, the second parallel plate electrode 3 is electrically connected with two wiring pins 5 of described plug respectively.The manufactured materials of described inductor 4 is the unsettled material of thermal expansion, be higher better of the expansion coefficient of inductor 4, so the swelling of inductor 4 is more obvious, be fixed on the horizontal shift of the second parallel plate electrode 3 on inductor 4 just obviously, capacitance variation is more obvious like this, can accurately detect the temperature of body to be measured.
In described housing 1, be provided with a dividing plate, housing 1 is divided into the first cavity 12 and the second cavity 11 by described dividing plate, the first parallel plate electrode 2, the second parallel plate electrode 3 and inductor 4 are all positioned at described the first cavity 12, described plug is positioned at described the second cavity 11, and the junction of described plug and the second cavity 11 is provided with ring seal packing ring.
Distance between capacitance and two parallel plate electrodes meets following relational expression:
Wherein, C is capacitance to C=ε s/4 π kd, and ε is the specific inductive capacity of medium between parallel plate electrode, and S is that the right opposite of two parallel plate electrodes is long-pending, and k is electrostatic force constant (being also constant), and d is the distance between pole plate.Can find out when constant apart from d, the long-pending s of the right opposite of two parallel plate electrodes is directly proportional to described capacitance C; , when the long-pending s of the right opposite of two parallel plate electrodes increases, capacitance C increases; When the long-pending s of right opposite of two parallel plate electrodes reduces, capacitance C increases.
In the time that environment temperature raises, in the first cavity, 12 temperature also increases thereupon, and inductor 44 starts to expand, and the second upper parallel plate electrode 3 of inductor 4 is also along with inductor 4 is moved to the left, and therefore capacitance can increase; Otherwise capacitance reduces.The utility model temperature sensor detects the temperature of body to be measured according to capacitance size, electric capacity does not exist DC power, and when capacitance measurement, only needs to use ac small signal, and therefore the utility model temperature sensor is low in energy consumption.Plug is connected with vehicle-mounted ECU, and corresponding ac signal is passed to vehicle-mounted ECU by plug.
These are only embodiment of the present utility model; not thereby limit the scope of the claims of the present invention; every equivalent structure that utilizes the utility model instructions and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, all in like manner within scope of patent protection of the present utility model.
Claims (4)
1. a temperature sensor, described temperature sensor comprises housing, in described housing, there is accommodation space, described shell nozzle end is provided with plug, described plug is provided with a pair of wiring pin, it is characterized in that: described temperature sensor also comprises the first parallel plate electrode, the second parallel plate electrode and inductor, described the first parallel plate electrode is fixed on one end of inner walls, on the fixing described inductor of described the second parallel plate electrode, described inductor is fixed on the other end of described inner walls, form an easy electric capacity, described the first parallel plate electrode, the second parallel plate electrode is electrically connected with two wiring pins of described plug respectively.
2. temperature sensor as claimed in claim 1, it is characterized in that: in described housing, be provided with a dividing plate, housing is divided into the first cavity and the second cavity by described dividing plate, the first parallel plate electrode, the second parallel plate electrode and inductor are all positioned at described the first cavity, and described plug is positioned at described the second cavity.
3. temperature sensor as claimed in claim 2, is characterized in that: the junction of described plug and the second cavity is provided with ring seal packing ring.
4. temperature sensor as claimed in claim 1, is characterized in that: the manufactured materials of described inductor is the unsettled material of thermal expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249277.3U CN203824662U (en) | 2014-05-15 | 2014-05-15 | Temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249277.3U CN203824662U (en) | 2014-05-15 | 2014-05-15 | Temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203824662U true CN203824662U (en) | 2014-09-10 |
Family
ID=51480147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420249277.3U Expired - Fee Related CN203824662U (en) | 2014-05-15 | 2014-05-15 | Temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203824662U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763357A (en) * | 2019-11-08 | 2020-02-07 | 江苏科技大学 | Capacitive temperature sensor and use method |
| CN111721434A (en) * | 2020-07-01 | 2020-09-29 | 盐城师范学院 | Distribution bus joint heating sensor |
-
2014
- 2014-05-15 CN CN201420249277.3U patent/CN203824662U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763357A (en) * | 2019-11-08 | 2020-02-07 | 江苏科技大学 | Capacitive temperature sensor and use method |
| CN111721434A (en) * | 2020-07-01 | 2020-09-29 | 盐城师范学院 | Distribution bus joint heating sensor |
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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: 20140910 Termination date: 20150515 |
|
| EXPY | Termination of patent right or utility model |