CN103344784B - Temperature control type magnetic liquid acceleration sensor - Google Patents
Temperature control type magnetic liquid acceleration sensor Download PDFInfo
- Publication number
- CN103344784B CN103344784B CN201310280609.4A CN201310280609A CN103344784B CN 103344784 B CN103344784 B CN 103344784B CN 201310280609 A CN201310280609 A CN 201310280609A CN 103344784 B CN103344784 B CN 103344784B
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- sensor
- magnetic liquid
- temperature
- inner housing
- shell body
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Abstract
The invention belongs to the technical field of inertial sensors, and discloses a temperature control type magnetic liquid acceleration sensor. The temperature control type magnetic liquid acceleration sensor solves the problem that when an existing magnetic liquid acceleration sensor is used and the temperature is excessively high or low, the physical property of magnetic liquid changes, so that the normal work of the sensor is influenced. The sensor is composed of an outer shell, an inner shell, an air inlet port, an air outlet port, a temperature sensor, an end cover, a screw, a cylindrical permanent magnet, the magnetic liquid, a sensor outgoing line and a rubber plug. When the temperature sensor detects that the temperature is excessively low or high, the sensor outgoing line sends feedback signals, the temperature sensor receives the signals and then controls an external air breather to inject protection gas into a cavity formed by the outer shell and the inner shell for heating or cooling the inner shell, so that the magnetic liquid works within 25-30 DEG C constantly, stability of the physical property of the magnetic liquid is guaranteed, and the magnetic liquid acceleration sensor can work normally without influence of the environment temperature.
Description
Technical field
The present invention relates to sensor technical field, specifically, the present invention relates to magnetic liquid acceleration sensor.
Background technology
Acceleration transducer is widely used, and is all absolutely necessary in fields such as the vehicles, biomedicine, oil exploitation, war industrys.Science and technology development make people to the requirement of acceleration transducer also more and more higher.Compare conventional acceleration sensor, magnetic liquid acceleration sensor does not have mechanical wear, has higher sensitivity and reliability.In addition, also there is the advantages such as energy ezpenditure is low, price is low, LF-response is good.But existing magnetic liquid acceleration sensor is subject to the restriction of environment temperature in use, when temperature is too high or too low, the physical property of magnetic liquid will change, thus affect normal operation of sensor.
Summary of the invention
The technical issues that need to address of the present invention are, existing magnetic liquid acceleration sensor is subject to the restriction of environment temperature in use, and when temperature is too high or too low, the physical property of magnetic liquid will change, thus affect normal operation of sensor.
The technical solution adopted for the present invention to solve the technical problems is:
Temperature control type magnetic liquid acceleration sensor, the connection between each several part forming this sensor:
Air inlet port and give vent to anger port separately with shell body with being threaded.
The excircle of inner housing is close to by temperature sensor.
Inner housing and shell body screw are connected and fixed, make between shell body and inner housing formed can supplied gas flowing passage.
Put into cylindrical permanent magnet in inner housing, and fill magnetic liquid.
The groove of end cap is embedded in rubber seal, and with inner housing with being threaded.
First coil and the second coil are wrapped in two annular grooves of shell body respectively, and the first coil 3 adopts differential type to be connected with the connection of the second coil.
The sensor extension line of temperature sensor is connected to outside sensor body structure by the through hole on shell body, is connected with temperature controller.
With the through hole on rubber stopper seal shell body.
The present invention compares had beneficial effect with prior art:
Form cavity between shell body and inner housing, supplied gas flows.
During working sensor; when the temperature that temperature sensor detects too low or too high time; temperature sensor provides feedback signal by sensor extension line; temperature controller controls to pour blanket gas in cavity that external aeration device just formed to shell body and inner housing and heats or cool inner housing after receiving signal; the magnetic liquid of inner housing inside is made to always work within the scope of 25 DEG C ~ 30 DEG C; ensure that the stable of magnetic liquid physical property, magnetic liquid acceleration sensor normally can not be worked by the impact of environment temperature.
This is simple and reliable for structure, practical.
Accompanying drawing explanation
Fig. 1 temperature control type magnetic liquid acceleration sensor structural drawing.
The A-A sectional view of Fig. 2 Fig. 1.
Fig. 3 Fig. 1 I partial enlarged drawing
In figure: shell body 1, inner housing 2, first coil 3, cylindrical permanent magnet 4, second coil 5, port 6 of giving vent to anger, end cap 7, rubber seal 8, screw 9, air inlet port 10, magnetic liquid 11, temperature sensor 12, sensor extension line 13, rubber plug 14.
Embodiment
Be that the invention will be further described for embodiment with accompanying drawing:
Temperature control type magnetic liquid acceleration sensor, as Fig. 1, this sensor comprises: shell body 1, inner housing 2, first coil 3, cylindrical permanent magnet 4, second coil 5, port 6 of giving vent to anger, end cap 7, rubber seal 8, screw 9, air inlet port 10, temperature sensor 12, sensor extension line 13, rubber plug 14.
Connection between each several part forming this sensor:
Air inlet port 6 and port 10 of giving vent to anger separately with shell body 1 with being threaded.
The excircle of inner housing 2 is close to by temperature sensor 12.
Inner housing 2 and shell body 1 screw 9 are connected and fixed, and making to be formed between shell body 1 and inner housing 2 can the passage that flows of supplied gas.
Put into cylindrical permanent magnet 4 in inner housing 2, and fill magnetic liquid 11.
The groove of end cap 7 is embedded in rubber seal 8, and with inner housing 2 with being threaded.
First coil 3 and the second coil 5 are wrapped in two annular grooves of shell body 1 respectively, and the first coil 3 adopts differential type to be connected with the connection of the second coil 5.
The sensor extension line 13 of temperature sensor 12 is connected to outside sensor body structure by the through hole on shell body 1, is connected with temperature controller.
With the through hole on rubber plug 14 can body 1.
During working sensor; when the temperature that temperature sensor 12 detects too low or too high time; temperature sensor 12 provides feedback signal by sensor extension line 13; temperature controller controls to pour blanket gas in cavity that external aeration device just formed to shell body 1 and inner housing 2 and heats or cool inner housing 2 after receiving signal; the magnetic liquid of inner housing 2 inside is made to always work within the scope of 25 DEG C ~ 30 DEG C; ensure that the stable of magnetic liquid physical property, magnetic liquid acceleration sensor normally can not be worked by the impact of environment temperature.
Shell body 1, inner housing 2, port 6 of giving vent to anger, end cap 7, screw 9, air inlet port 10 are non-magnet material as austenitic stainless steel.
Described magnetic liquid 11 is chosen as Kerosene-Base Magnetic Fluid usually, machine oil based magnetic liquid or ester group magnetic liquid.
Claims (2)
1. temperature control type magnetic liquid acceleration sensor, the connection between each several part forming this sensor:
This sensor comprises: shell body (1), the first coil (3), the second coil (5), cylindrical permanent magnet (4) and magnetic liquid (11);
First coil (3) and the second coil (5) are wrapped in two annular grooves of shell body (1) respectively, and the first coil (3) adopts differential type to be connected with the connection of the second coil (5);
It is characterized in that:
The left end of shell body (1) is closed, and the cylindrical of shell body (1) right-hand member is connected with air inlet port (6) and port of giving vent to anger (10);
Inner housing (2) is placed in shell body (1), cylindrical permanent magnet (4) is put into inner housing (2), in inner housing (2), fill magnetic liquid (11), with screw (9), inner housing (2) and shell body (1) are connected and fixed;
The right-hand member of end cap (7) and inner housing (2), with being threaded, realizes the sealing of end cap (7) and inner housing (2) by rubber seal (8);
Temperature sensor (12) is attached on inner housing (2) excircle, and temperature sensor (12) is connected with temperature controller;
The cavity that supplied gas flows is formed, for the temperature regulating inner housing (2) inner between shell body (1) and inner housing (2).
2. temperature control type magnetic liquid acceleration sensor according to claim 1, is characterized in that:
The temperature range that temperature controller controls is 25 DEG C ~ 30 DEG C;
The sensor extension line (13) of temperature sensor (12) is connected to outside sensor body structure by the through hole on shell body (1), is connected with temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310280609.4A CN103344784B (en) | 2013-07-05 | 2013-07-05 | Temperature control type magnetic liquid acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310280609.4A CN103344784B (en) | 2013-07-05 | 2013-07-05 | Temperature control type magnetic liquid acceleration sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103344784A CN103344784A (en) | 2013-10-09 |
| CN103344784B true CN103344784B (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310280609.4A Expired - Fee Related CN103344784B (en) | 2013-07-05 | 2013-07-05 | Temperature control type magnetic liquid acceleration sensor |
Country Status (1)
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| CN (1) | CN103344784B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675342B (en) * | 2013-12-26 | 2016-04-20 | 北京交通大学 | Novel range-adjustable magnetic liquid acceleration sensor |
| CN105240432B (en) * | 2015-06-23 | 2017-08-11 | 北京交通大学 | A kind of single order buoyancy magnetic liquid shock absorber for space |
| CN105866471A (en) * | 2016-04-08 | 2016-08-17 | 北京交通大学 | Novel inner cone angle magnetic liquid acceleration transducer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202091518U (en) * | 2011-05-09 | 2011-12-28 | 埃慕迪磁电科技(上海)有限公司 | Water cooling structure of magnetic fluid sealing device |
| CN103149384A (en) * | 2013-02-07 | 2013-06-12 | 北京交通大学 | Magnetic liquid acceleration sensor |
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2013
- 2013-07-05 CN CN201310280609.4A patent/CN103344784B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202091518U (en) * | 2011-05-09 | 2011-12-28 | 埃慕迪磁电科技(上海)有限公司 | Water cooling structure of magnetic fluid sealing device |
| CN103149384A (en) * | 2013-02-07 | 2013-06-12 | 北京交通大学 | Magnetic liquid acceleration sensor |
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| CN103344784A (en) | 2013-10-09 |
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Granted publication date: 20150610 Termination date: 20200705 |