CN205843856U - The piezoresistive transducer of anti-electromagnetic interference - Google Patents
The piezoresistive transducer of anti-electromagnetic interference Download PDFInfo
- Publication number
- CN205843856U CN205843856U CN201620645860.5U CN201620645860U CN205843856U CN 205843856 U CN205843856 U CN 205843856U CN 201620645860 U CN201620645860 U CN 201620645860U CN 205843856 U CN205843856 U CN 205843856U
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- Prior art keywords
- layer
- piezoresistive transducer
- conductive layer
- electromagnetic interference
- matrix
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Micromachines (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses the piezoresistive transducer of a kind of anti-electromagnetic interference, piezoresistive transducer includes resistance strain gage, heat-conducting layer, electro-magnetic screen layer, conductive layer and the housing set gradually from inside to outside, heat-conducting layer is arranged in the interlayer between described resistance strain gage and described electro-magnetic screen layer, conductive layer is located in the interlayer between described electro-magnetic screen layer and described housing, is provided with shielding implant in the interlayer between conductive layer and described housing；Resistance strain gage is provided with a matrix, strain silk, a protective layer, a lead-in wire；The top of matrix makes strain silk be fixed on matrix by bonding agent, and strain silk is respectively arranged at two ends with lead-in wire；Strain silk fixes adhesion with described protective layer；Using such scheme, this utility model can make piezoresistive transducer, in all trades and professions, the weight of goods is on the platform having piezoresistive transducer, increase sensitivity, accuracy, and prevent lawless people from disturbing electronic scale to escape the punishment of law by Gap Generator.
Description
Technical field
This utility model relates to field sensor field, refers more particularly to the pressure resistance type sensing of a kind of anti-electromagnetic interference
Device.
Background technology
Pressure transducer is a kind of sensor the most commonly used in industrial practice, and it is widely used in various industry automatic control ring
Border, relate to water conservancy and hydropower, railway traffic, intelligent building, production automatic control, Aero-Space, military project, petrochemical industry, oil well, electric power, boats and ships,
Numerous industry such as lathe, pipeline, resistance strain gage is a kind of strain variation on measured piece to be converted into a kind of signal of telecommunication
Sensitive Apparatus, it is one of key component of pressure resistance type strain transducer, and the resistance of resistance strain gage is the least, and required drives
Streaming current is too big, and the heating of foil gauge simultaneously causes temperature own too high, and the circuit easily causing sensor body burns out, as
Really resistance is too big, and impedance is the highest, and the electromagnetic interference capability in the anti-external world is poor, easily makes the sensitivity decrease of sensor, therefore needs
Wanting high accuracy, high stability, high characteristic, the sensor of low price will be the developing direction of pressure transducer, therefore prior art
Existing defects, needs to improve.
Utility model content
Technical problem to be solved in the utility model is to provide the piezoresistive transducer of anti-electromagnetic interference.
For achieving the above object, this utility model be have employed following technical scheme: the pressure resistance type of anti-electromagnetic interference passes
Sensor, resistance strain gage that piezoresistive transducer includes setting gradually from inside to outside, heat-conducting layer, electro-magnetic screen layer, conductive layer and
Housing, described heat-conducting layer is arranged in the interlayer between described resistance strain gage and described electro-magnetic screen layer, and described conductive layer sets
In interlayer between described electro-magnetic screen layer and described housing, the interlayer between described conductive layer and described housing is provided with screen
Cover implant；
Described resistance strain gage is provided with a matrix, strain silk, a protective layer, a lead-in wire；The top of described matrix is passed through
Bonding agent makes strain silk be fixed on matrix, described strain silk be respectively arranged at two ends with lead-in wire；Described strain silk and described protection
The fixing adhesion of layer.
Preferably, described housing is closure cavity, and the right side of described housing is provided with through hole.
Preferably, the left side of described through hole is fixed with voltage protection.
Preferably, the left side of described voltage protection is provided with a controller.
Preferably, the outer wall of described conductive layer is fixed with conductor wire, and the inwall of described conductive layer is provided with electrostatic screen layer.
Providing the benefit that relative to prior art, using such scheme, this utility model can make piezoresistive transducer,
In all trades and professions, the weight of goods, on the platform having piezoresistive transducer, increases sensitivity, accuracy, and prevents not
Method personnel disturb electronic scale to escape the punishment of law by Gap Generator.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present utility model；
Fig. 2 is the structural representation of resistance strain gage of the present utility model.
Legend title
Housing 1；Conductive layer 2；Electro-magnetic screen layer 3；Heat-conducting layer 4；Resistance strain gage 5；Matrix 11；Strain silk 12；Lead-in wire 13；
Protective layer 14.
Detailed description of the invention
For the ease of understanding this utility model, below in conjunction with the accompanying drawings and specific embodiment, this utility model is carried out more detailed
Thin explanation.Accompanying drawing gives preferred embodiment of the present utility model.But, this utility model can be different with many
Form realizes, however it is not limited to the embodiment described by this specification.On the contrary, providing the purpose of these embodiments is to make this
The understanding of the disclosure of utility model is more thorough comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, and it can be directly on another element
Or element placed in the middle can also be there is.When an element is considered as " connection " another element, and it can be to be directly connected to
To another element or may be simultaneously present centering elements.The term that this specification is used " is fixed ", " one-body molded ",
"left", "right" and similar statement are for illustrative purposes only.
Unless otherwise defined, this specification is used all of technology and scientific terminology with belong to skill of the present utility model
The implication that the technical staff in art field is generally understood that is identical.In art used in the description of the present utility model in this specification
Language is intended merely to describe the purpose of specific embodiment, is not intended to limit this utility model.
As it is shown in figure 1, an embodiment of the present utility model is: the piezoresistive transducer of anti-electromagnetic interference, pressure resistance type passes
Sensor includes resistance strain gage 5, heat-conducting layer 4, electro-magnetic screen layer 3, conductive layer 2 and the housing 1 set gradually from inside to outside, described
Housing 1 is closure cavity, and the right side of described housing 1 is provided with through hole, further, be additionally provided with in housing 1 voltage protection and
Controller, controller and voltage protection are electrically connected with, and further voltage protection is transformator, the instability of alternating current
The not accurate of sensor can be caused, make the voltage stabilization of entrance sensor thereby through transformator, be allowed to piezoresistive transducer steady
Fixed, accurate；Controller is provided with pcb board and PLC intelligent chip；Pcb board is electrically connected with PLC intelligent chip；Civil power passes through through hole
Being electrically connected with voltage protection, the outfan of voltage protection is electrically connected with pcb board；Gap in through hole is filled out further
Fill shielding implant, be brushed with shielding paint at through hole two ends.
Interlayer between housing 1 and electro-magnetic screen layer 3 is provided with conductive layer 2, and further, the inwall of conductive layer 2 is fixed with
Electrostatic screen layer, electrostatic screen layer is electrostatic screen film, and electrostatic screen film spreads upon the inwall of conductive layer 2 by sticking liquid to be made quiet
Electric screen film is fixed on conductive layer 2, further, is provided with conductor wire on the right side of the outer wall of conductive layer 2, and conductor wire welds by being stained with agent
It is allowed to be fixed on conductive layer 2, is stained with the electronic shield liquid that agent is paste colloidality.
Being provided with implant between described conductive layer 2 and described housing 1, further, described implant is shielding implant,
Shielding implant is with the core sand plain material such as stainless steel filament and dacron thread；Further, electro-magnetic screen layer 3 is provided with metal screen layer and painting
The bed of material, it is netted that metal screen layer is formed in one, and dope layer is epoxy resin screen layer, and epoxy resin screen layer is fixing to be located at
Bottom metal screen layer, further, electro-magnetic screen layer 3 includes substrate and Ag films, and Ag films is according to magnetron sputtering technology
The electro-magnetic screen layer 3 manufactured, good relative to the shield effectiveness of other electro-magnetic screen layer, stability is strong.
As in figure 2 it is shown, described resistance strain gage 5 is provided with matrix 11, strain silk 12, protective layer 14, lead-in wire 13；
The top of described matrix 11 makes strain silk 12 be fixed on matrix 11 by bonding agent, being respectively arranged at two ends with of described strain silk 12
Lead-in wire 13；Described strain silk 12 fixes adhesion with described protective layer 14；Further, lead-in wire 13 includes input lead-in wire and outfan
It is electrical with PLC intelligent chip that lead-in wire, input lead-in wire and outfan lead-in wire both pass through heat-conducting layer 4, electro-magnetic screen layer 3, conductive layer 2
Connecting, further, matrix 11 is provided with weldment, and lead-in wire 13 makes weldment, lead-in wire 13, matrix 11 three mutually weld by welding
It is connected together；
Further, resistance strain gage 5 is additionally provided with the control device making strain silk 12 lower the temperature, and controls device and is provided with sealing pipe
Road, induction apparatus, switch valve, memory bank；The bottom of memory bank is provided with through hole, is provided with switch valve in through hole, and the outside of through hole is with close
Tube sealing road connects；Further, the outside of strain silk 12 is provided with insulation sleeve, seals pipeline and is enclosed within the outside formation cavity of insulation sleeve
Body.
Resistance strain gage 5 that the piezoresistive transducer of anti-electromagnetic interference includes setting gradually from inside to outside, heat-conducting layer 4, electricity
Magnetic masking layer 3, conductive layer 2 and housing 1, described heat-conducting layer 4 be arranged on described resistance strain gage 5 and described electro-magnetic screen layer 3 it
Between interlayer in, described conductive layer 2 is located in the interlayer between described electro-magnetic screen layer 3 and described housing 1, described conductive layer 2
And the interlayer between described housing 1 is provided with shielding implant；
Described resistance strain gage 5 is provided with matrix 11, strain silk 12, protective layer 14, lead-in wire 13；Described matrix 11
Top make strain silk 12 be fixed on matrix 11 by bonding agent, described strain silk 12 be respectively arranged at two ends with lead-in wire 13；Institute
State strain silk 12 and fix adhesion with described protective layer 14.
Preferably, described housing 1 is closure cavity, and the right side of described housing 1 is provided with through hole.
Preferably, the left side of described through hole is fixed with voltage protection.
Preferably, the left side of described voltage protection is provided with a controller.
Preferably, the outer wall of described conductive layer 2 is fixed with conductor wire, and the inwall of described conductive layer 2 is provided with electrostatic screen
Layer.
Providing the benefit that relative to prior art, using such scheme, this utility model can make piezoresistive transducer,
In all trades and professions, the weight of goods, on the platform having piezoresistive transducer, increases sensitivity, accuracy, and prevents not
Method personnel disturb electronic scale to escape the punishment of law by Gap Generator.
It should be noted that above-mentioned each technical characteristic continues to be mutually combined, form various embodiments the most enumerated above,
It is accordingly to be regarded as the scope that this utility model description is recorded；Further, for those of ordinary skills, can according on state
Bright improved or converted, and all these modifications and variations all should be belonged to the protection model of this utility model claims
Enclose.
Claims (5)
- The piezoresistive transducer of the most anti-electromagnetic interference, it is characterised in that piezoresistive transducer includes setting gradually from inside to outside Resistance strain gage, heat-conducting layer, electro-magnetic screen layer, conductive layer and housing, described heat-conducting layer is arranged on described resistance strain gage and institute Stating in the interlayer between electro-magnetic screen layer, described conductive layer is located in the interlayer between described electro-magnetic screen layer and described housing, Interlayer between described conductive layer and described housing is provided with shielding implant；Described resistance strain gage is provided with a matrix, strain silk, a protective layer, a lead-in wire；The top of described matrix by viscous and Agent makes strain silk be fixed on matrix, described strain silk be respectively arranged at two ends with lead-in wire；Described strain silk is solid with described protective layer Determine adhesion.
- The piezoresistive transducer of the most anti-electromagnetic interference, it is characterised in that described housing is closure chamber Body, the right side of described housing is provided with through hole.
- The piezoresistive transducer of the most anti-electromagnetic interference, it is characterised in that it is characterized in that is described logical The left side in hole is fixed with voltage protection.
- The piezoresistive transducer of the most anti-electromagnetic interference, it is characterised in that it is characterized in that, described electricity The left side of pressure protection device is provided with a controller.
- The piezoresistive transducer of the most anti-electromagnetic interference, it is characterised in that the outer wall of described conductive layer is solid Surely being provided with conductor wire, the inwall of described conductive layer is provided with electrostatic screen layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620645860.5U CN205843856U (en) | 2016-06-27 | 2016-06-27 | The piezoresistive transducer of anti-electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620645860.5U CN205843856U (en) | 2016-06-27 | 2016-06-27 | The piezoresistive transducer of anti-electromagnetic interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205843856U true CN205843856U (en) | 2016-12-28 |
Family
ID=57620557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620645860.5U Expired - Fee Related CN205843856U (en) | 2016-06-27 | 2016-06-27 | The piezoresistive transducer of anti-electromagnetic interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205843856U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857468A (en) * | 2021-03-10 | 2021-05-28 | 中国科学院宁波材料技术与工程研究所 | Dual-mode sensor for measuring strain and magnetic field and preparation method thereof |
-
2016
- 2016-06-27 CN CN201620645860.5U patent/CN205843856U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857468A (en) * | 2021-03-10 | 2021-05-28 | 中国科学院宁波材料技术与工程研究所 | Dual-mode sensor for measuring strain and magnetic field and preparation method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161228 Termination date: 20200627 |