CN217483729U - Mounting structure of waterproof piezoresistive sensor - Google Patents
Mounting structure of waterproof piezoresistive sensor Download PDFInfo
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- CN217483729U CN217483729U CN202220909683.2U CN202220909683U CN217483729U CN 217483729 U CN217483729 U CN 217483729U CN 202220909683 U CN202220909683 U CN 202220909683U CN 217483729 U CN217483729 U CN 217483729U
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Abstract
The utility model provides a mounting structure of waterproof piezoresistive sensor belongs to piezoresistive sensor technical field, including encapsulation lid and packaging box, the encapsulation lid sets up the one end at the packaging box, and encapsulation lid and the inside heat preservation that all is provided with of packaging box, air inlet window and air outlet window have been seted up on the circumference wall of packaging box respectively, and the inside air inlet window department that corresponds of packaging box is provided with the heater strip, and the inside air outlet window department that corresponds of packaging box is provided with the fan, and the inside temperature sensor that is provided with of packaging box has solved the problem that past mounting structure of waterproof piezoresistive sensor can not satisfy the temperature compensation effect, the utility model discloses it is rational in infrastructure, can satisfy the demand of waterproof piezoresistive sensor constant temperature environment operation, reduce waterproof piezoresistive sensor's detection error.
Description
Technical Field
The utility model belongs to the technical field of piezoresistive sensor, specifically be a waterproof piezoresistive sensor's mounting structure.
Background
The piezoresistive pressure sensor is formed by utilizing the piezoresistive effect of single crystal silicon. A monocrystalline silicon wafer is used as an elastic element, a group of equivalent resistors are diffused in a specific direction of monocrystalline silicon on the monocrystalline silicon wafer by utilizing the process of an integrated circuit, the resistors are connected into a bridge circuit, and the monocrystalline silicon wafer is arranged in a sensor cavity. When the pressure changes, the monocrystalline silicon generates strain, so that the strain resistance directly diffused on the monocrystalline silicon generates change in direct proportion to the measured pressure, and then a bridge circuit obtains a corresponding voltage output signal.
When the existing waterproof piezoresistive sensor is used, the biggest defect of the piezoresistive sensor is that the temperature error is large, the effective detection value of the piezoresistive sensor can be influenced when the temperature inside and outside the piezoresistive sensor is changed too greatly, so the piezoresistive sensor is used under the condition of temperature compensation or constant temperature, the traditional piezoresistive sensor is simple in installation structure and cannot meet the requirement of the piezoresistive sensor on the condition of temperature compensation or constant temperature, and the existing waterproof piezoresistive sensor is urgently needed to be installed to solve the problems.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a mounting structure of waterproof piezoresistive sensor to solve the problem that proposes in the above-mentioned background art, the utility model discloses it is rational in infrastructure, can satisfy the demand of waterproof piezoresistive sensor constant temperature environment operation, reduce waterproof piezoresistive sensor's detection error.
In order to achieve the above purpose, the present invention is realized by the following technical solution: a waterproof piezoresistive sensor mounting structure comprises a packaging cover and a packaging box, wherein the packaging cover is arranged at one end of the packaging box, heat insulation layers are arranged inside the packaging cover and the packaging box, an air inlet window and an air outlet window are respectively arranged on the circumferential wall of the packaging box, a heating wire is arranged inside the packaging box and corresponds to the air inlet window, a fan is arranged inside the packaging box and corresponds to the air outlet window, and a temperature sensor is arranged inside the packaging box;
the packaging box is characterized in that a temperature control mechanism is further arranged in the packaging box, the temperature control mechanism comprises a single chip microcomputer, the input end of the single chip microcomputer is electrically connected with the output end of the temperature sensor, and the output end of the single chip microcomputer is electrically connected with the input ends of the heating wires and the fan.
Furthermore, the inner wall of the packaging box is provided with a rubber rod, and the temperature sensor is arranged at the tail end of the rubber rod.
Furthermore, a first rubber pad for wrapping the connection end of the waterproof piezoresistive sensor is arranged in the packaging cover in a penetrating mode, and a second rubber pad for wrapping the connection end of the waterproof piezoresistive sensor is arranged in the packaging box in a penetrating mode.
Furthermore, one end of the packaging cover close to the packaging box is provided with a threaded screw head, and the packaging cover is in threaded fit connection with the packaging box through the threaded screw head.
Further, the packaging cover is provided with a mounting seat, and a mounting hole is formed in the mounting seat in a penetrating mode.
Furthermore, a protective cover is arranged outside the fan and fixed on the inner wall of the packaging box.
Furthermore, the heat-insulating layer is made of heat-resistant heat-insulating foam materials.
The utility model has the advantages that:
1. the temperature control mechanism in the packaging box of the utility model detects the temperature of the surface of the waterproof piezoresistive sensor through the temperature sensor and transmits the temperature to the singlechip, controls the alternate operation of the heating wire and the fan through the singlechip to keep constant temperature in the packaging box, and further controls the constant temperature of the surface of the waterproof piezoresistive sensor;
2. the inner wall of the packaging box of the utility model is provided with the rubber rod, the temperature sensor is arranged at the tail end of the rubber rod, and the rubber rod is made of elastic material, so that the temperature sensor can be continuously contacted with the surface of the waterproof piezoresistive sensor;
3. the utility model discloses a run through in the encapsulation lid and be provided with the rubber pad that is used for the waterproof piezoresistive type sensor of parcel to connect the output, run through in the encapsulation box and be provided with the rubber pad two that is used for the waterproof piezoresistive type sensor incoming end of parcel, make things convenient for waterproof piezoresistive type sensor to connect the installation of output and incoming end, the parcel is inseparable.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view of a mounting structure of a waterproof piezoresistive sensor according to the present invention;
fig. 2 is a partial sectional view of a mounting structure of a waterproof piezoresistive sensor according to the present invention;
fig. 3 is an elevational sectional view of a mounting structure of a waterproof piezoresistive sensor according to the present invention;
FIG. 4 is a schematic diagram of a conventional waterproof piezoresistive sensor;
fig. 5 is a schematic diagram illustrating a connection of a temperature control mechanism in a mounting structure of a waterproof piezoresistive sensor according to the present invention;
in the figure: 1. a package cover; 2. packaging the box; 21. an air inlet window; 22. a vent window; 23. heating wires; 24. a fan; 25. a temperature sensor; 251. a rubber rod; 3. a waterproof piezoresistive sensor; 31. an access end; 311. a first rubber pad; 32. an output end is connected; 321. a second rubber pad; 4. a mounting seat; 5. and (7) an insulating layer.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a mounting structure of waterproof piezoresistive sensor, including encapsulation lid 1 and encapsulation box 2, encapsulation lid 1 sets up the one end at encapsulation box 2, encapsulation lid 1 and the inside heat preservation 5 that all is provided with of encapsulation box 2, air inlet window 21 and air outlet window 22 have been seted up on the circumference wall of encapsulation box 2 respectively, encapsulation box 2 is inside to be provided with heater strip 23 corresponding air inlet window 21 department, encapsulation box 2 is inside to be provided with fan 24 corresponding air outlet window 22 department, encapsulation box 2 is inside to be provided with temperature sensor 25, the problem that the mounting structure of waterproof piezoresistive sensor 3 in the past can not satisfy the temperature compensation effect is solved.
The utility model discloses a still be equipped with temperature control mechanism in the encapsulation box 2, temperature control mechanism includes the singlechip, the input and the output electricity of temperature sensor 25 of singlechip are connected, the output and the input electricity of heater strip 23 and fan 24 of singlechip are connected, the joining of temperature control mechanism, temperature sensor 25 detects the temperature on 3 surfaces of waterproof piezoresistive sensor and transmits for the singlechip, through the alternate operation of single chip microcomputer control heater strip 23 and fan 24, keep at invariable temperature in messenger encapsulation box 2, and then the constancy of temperature on 3 surfaces of waterproof piezoresistive sensor of control.
The utility model discloses a 2 inner walls of encapsulation box are provided with rubber pole 251, and temperature sensor 25 sets up the end at rubber pole 251, because rubber pole 251 is the elasticity material, consequently makes temperature sensor 25 can last with waterproof piezoresistive sensor 3 surface contact.
The utility model discloses a run through being provided with in the encapsulation lid 1 and being used for wrapping up the rubber pad 311 that waterproof piezoresistive sensor 3 connects output 32, run through being provided with in the encapsulation box 2 and being used for wrapping up two 321 of rubber pads of waterproof piezoresistive sensor 3 incoming end 31, make things convenient for waterproof piezoresistive sensor 3 to connect output 32 and incoming end 31's installation, the parcel is inseparable.
The utility model discloses an encapsulation lid 1 is close to the one end of encapsulation box 2 and is provided with the screw thread lead, and encapsulation lid 1 is connected through screw thread lead and 2 screw-thread fit of encapsulation box, and the dismouting between encapsulation lid 1 and the encapsulation box 2 of being convenient for is favorable to waterproof piezoresistive sensor 3's installation.
The utility model discloses a be provided with mount pad 4 on the encapsulation lid 1, run through on the mount pad 4 and seted up the mounting hole for the installation of encapsulation box 2 and encapsulation lid 1 is holistic, also is favorable to the installation in 3 later stages of waterproof piezoresistive sensor to be fixed.
The utility model discloses an encapsulation box 2 is inside to correspond air outlet window 22 department and is provided with fan 24, and fan 24's outside is provided with the safety cover, and the safety cover is fixed on encapsulation box 2's inner wall, prevents to damage fan 24 structure.
The utility model discloses an encapsulation lid 1 and 2 inside heat preservation 5 that all are provided with of encapsulation box, the material of heat preservation 5 is heat-resisting heat preservation foam material, and the joining of heat preservation 5 is favorable to guaranteeing the inside temperature of encapsulation lid 1 and encapsulation box 2.
As an embodiment of the present invention: firstly, the inlet end 31 of the waterproof piezoresistive sensor 3 penetrates through the second rubber pad 321, the outlet end 32 of the waterproof piezoresistive sensor 3 penetrates through the first rubber pad 311, and then the packaging cover 1 and the packaging box 2 are screwed tightly;
when the waterproof piezoresistive sensor 3 is used, the effective detection value of the waterproof piezoresistive sensor 3 can be influenced when the temperature inside and outside the waterproof piezoresistive sensor 3 is changed too much; the singlechip inputs a preset temperature value, wherein the preset temperature value is a temperature value suitable for the working of the waterproof piezoresistive sensor 3; the temperature sensor 25 detects the sensing temperature of the surface of the waterproof piezoresistive sensor 3 and transmits the sensing temperature to the singlechip;
when the induction temperature is lower than the preset temperature, the single chip microcomputer controls the heating wire 23 to be electrified and work to heat the inside of the packaging box 2 until the induction temperature is equal to the preset temperature, and the single chip microcomputer controls the heating wire 23 to be powered off;
when the sensed temperature is higher than the preset temperature, the single chip microcomputer controls the fan 24 to be electrified and work, the fan 24 generates air flow for the air inlet window 21 and the air outlet window 22, the interior of the packaging box 2 is ventilated and cooled until the sensed temperature is equal to the preset temperature, and the single chip microcomputer controls the fan 24 to be powered off;
the alternating operation of the heating wire 23 and the fan 24 is controlled by the singlechip, so that the temperature in the packaging box 2 is kept constant, and the temperature on the surface of the waterproof piezoresistive sensor 3 is controlled to be constant.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a mounting structure of waterproof piezoresistive sensor which characterized in that: the packaging box comprises a packaging cover (1) and a packaging box (2), wherein the packaging cover (1) is arranged at one end of the packaging box (2), heat-insulating layers (5) are arranged inside the packaging cover (1) and the packaging box (2), an air inlet window (21) and an air outlet window (22) are respectively arranged on the circumferential wall of the packaging box (2), a heating wire (23) is arranged inside the packaging box (2) and corresponds to the air inlet window (21), a fan (24) is arranged inside the packaging box (2) and corresponds to the air outlet window (22), and a temperature sensor (25) is arranged inside the packaging box (2);
the temperature control mechanism is further arranged in the packaging box (2) and comprises a single chip microcomputer, the input end of the single chip microcomputer is electrically connected with the output end of the temperature sensor (25), and the output end of the single chip microcomputer is electrically connected with the input ends of the heating wire (23) and the fan (24).
2. The mounting structure of a waterproof piezoresistive sensor according to claim 1, characterised in that: the inner wall of the packaging box (2) is provided with a rubber rod (251), and the temperature sensor (25) is arranged at the tail end of the rubber rod (251).
3. The mounting structure of a waterproof piezoresistive sensor according to claim 1, characterised in that: a first rubber pad (311) used for wrapping the connection end (32) of the waterproof piezoresistive sensor (3) is arranged in the packaging cover (1) in a penetrating mode, and a second rubber pad (321) used for wrapping the connection end (31) of the waterproof piezoresistive sensor (3) is arranged in the packaging box (2) in a penetrating mode.
4. The mounting structure of a waterproof piezoresistive sensor according to claim 3, characterised in that: the packaging box is characterized in that a threaded screw head is arranged at one end, close to the packaging box (2), of the packaging cover (1), and the packaging cover (1) is in threaded fit connection with the packaging box (2) through the threaded screw head.
5. The mounting structure of a waterproof piezoresistive sensor according to claim 4, wherein: the packaging cover is characterized in that a mounting seat (4) is arranged on the packaging cover (1), and a mounting hole is formed in the mounting seat (4) in a penetrating mode.
6. The mounting structure of a waterproof piezoresistive sensor according to claim 1, characterised in that: the outside of fan (24) is provided with the safety cover, the safety cover is fixed on the inner wall of encapsulation box (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220909683.2U CN217483729U (en) | 2022-04-20 | 2022-04-20 | Mounting structure of waterproof piezoresistive sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220909683.2U CN217483729U (en) | 2022-04-20 | 2022-04-20 | Mounting structure of waterproof piezoresistive sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217483729U true CN217483729U (en) | 2022-09-23 |
Family
ID=83308983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220909683.2U Active CN217483729U (en) | 2022-04-20 | 2022-04-20 | Mounting structure of waterproof piezoresistive sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217483729U (en) |
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2022
- 2022-04-20 CN CN202220909683.2U patent/CN217483729U/en active Active
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