CN207936906U - A kind of electronic surveying ruler - Google Patents
A kind of electronic surveying ruler Download PDFInfo
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- CN207936906U CN207936906U CN201820078709.7U CN201820078709U CN207936906U CN 207936906 U CN207936906 U CN 207936906U CN 201820078709 U CN201820078709 U CN 201820078709U CN 207936906 U CN207936906 U CN 207936906U
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- elastomer
- elastic conductor
- impedance
- liquid metal
- control unit
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Abstract
The utility model discloses a kind of electronic surveying rulers, including elastic conductor, connector and controller；Controller is made of impedance measuring unit, control unit, power supply unit, display terminal and operating terminal；The both ends of elastic conductor are connected with connector, and electrical circuit is formed under electric power thus supplied；Under the action of control unit, impedance measuring unit measures the impedance of elastic conductor and is shown in display terminal.The electronic surveying ruler is simple in structure, since elastic conductor can carry out the deformations such as more times of stretchings, torsion, folding, therefore the linear measure longimetry of irregularly shaped object can be realized, have the characteristics that a wide range of, high-precision, portable, intelligence and be hardly damaged, there is good application prospect in terms of electronic surveying ruler.
Description
Technical field
The utility model is related to measuring scale technical fields, and in particular to a kind of electronic surveying ruler.
Background technology
Ruler is one of the dimensional measuring instrument of modern society's indispensability, especially in repairs profession and building trade, working
Personnel carry out linear measure longimetry commonly using steel tape.For steel tape, itself there is significant limitation, be to measure length first
Spend it is limited, if length increases, it is necessary to use leather measuring tape, and leather measuring tape volume is big, not Portable belt, and precision is not high；Followed by
Steel tape improper use is easily damaged, and side is easy incised wound in draw process；Common ruler needs artificial reading again, no
It is evitable to cause human error.
There is infrared range-measurement system currently on the market.The advantages of infrared range-measurement system is wide range of measurement, and error is small, but infrared survey
The shortcomings that distance meter is exactly to be unable to measure small-size object, such as several centimetres of length；Moreover, infrared range-measurement system can only measure directly
Line is unable to measure the length dimension of curved object or irregularly shaped object；In addition, the infrared sensor of infrared range-measurement system is being carried
It is relatively easy to damage in the process.Therefore there is an urgent need to a kind of measurable irregularity body length, high-precision and it is portable, be hardly damaged
Measuring scale.
Utility model content
For the state of the art of above-mentioned measuring scale, elastic conductor is applied in measuring scale technical field by the utility model.
The elastic conductor not only has good electric conductivity, but also has good flexibility, can bear the shapes such as to stretch, be bent
Become, and in deformation process, impedance changes.In the application, it is identical to prepare two pieces structure, shape, property
Elastic conductor, one is used as sample, and one is used as measurement；Sample elasticity is detected under certain testing conditions first
Impedance variations information when tensile deformation occurs for conductor, obtains the correspondence of tensile deformation amount and impedance；Then, keep identical
Testing conditions, stretching elastic conductor keeps its length identical as determinand length, the practical resistance of elastic conductor after detection stretches
It is anti-；Finally, correspondence described in reference obtains corresponding tensile deformation amount to get to determinand length according to practical impedance.
The shape of the elastic conductor is unlimited, including threadiness, bulk, flake etc..
Preferably, the deformability of the elastic conductor is more than 70%.
As a kind of realization method, the elastic conductor includes elastomer and electric conductor.The elastomer is in outer masterpiece
It can deform under.The material for constituting the elastomer is unlimited, including silica gel, dimethyl silicone polymer (PDMS), rubber,
One or several kinds in hydrogel, polyurethane, SEBS, POE etc..Preferably, the electric conductor is liquid metal.It is described
Liquid metal material be at room temperature be liquid conductive metal material, including but not limited to mercury, gallium-indium alloy, gallium indium tin close
Gallium-indium alloy, the gallium-indium-tin alloy etc. of one or more of doping of gold and magnesium-yttrium-transition metal, solid-state nonmetalloid.
As a kind of structure type, the liquid metal particle disperses in the elastomer.The structure is prepared as a kind of
Elastic conductor method, liquid metal and the elastomer of melting are uniformly mixed, then cures elastomer therein, obtains
To elastic conductor.
As another structure type, the elastomer constitutes hollow cavity, and liquid metals is located in the hollow cavity.
As a kind of method for the elastic conductor preparing the structure, in elastomer formation, elastomer is prepared into tubulose using mold
Then liquid metal is poured into the hollow cavity of the tubular structure, obtains elastic conductor by structure at ambient temperature.
In addition, the elastic conductor can also be prepared via a method which：
The elastomer includes thermoplastic elastomer (TPE) and thermo-setting elastomer；
Thermoplastic elastomer (TPE) is heated into the elastomer of melting, liquid metal is coated to the surface of elastomer of the melting,
Again by the elastomer coated of the melting to liquid metal surface, then cool down curing elastomer, forms elastic conductor.Alternatively, will
Thermo-setting elastomer is coated to elastic substrates surface as elastic substrates, by liquid metal, then the thermo-setting elastomer is coated
To liquid metal surface, be then heating and curing elastomer, forms elastic conductor.
The elastic conductor is unlimited perpendicular to the cross sectional shape of length direction, including circle, triangle, square, more
Side shape etc..
The utility model additionally provides a kind of electronic surveying ruler using elastic conductor, as shown in Figure 1, including elastic conducting
Body, connector and controller；As shown in Fig. 2, controller by impedance measuring unit, control unit, power supply unit, display terminal with
Operating terminal forms；
Ends A, B and the connector of elastic conductor connect, and electrical circuit can be formed under electric power thus supplied；Impedance measuring unit with
Connector is connected, the impedance for measuring elastic conductor；
Control unit is connected with power supply unit, impedance measuring unit and display terminal, is supplied for controlling power supply unit
Electricity and impedance measuring unit carry out impedance measurement and include in display terminal by measurement result；
Operating terminal is connected to control unit, is instructed for being sent to control unit, such as power supply power supply, beginning impedance are surveyed
Amount, stopping impedance measurement, calibration starting point, calibration terminal etc.；
Power supply unit is used for as power supplies such as measuring unit, control unit, display terminal and operating terminals.
The connector is unlimited, including model specification is XH2.54-2P, VH3.96-2P, KF2510-2P, CH3.96-
One kind in 2P, PH2.0-2P, SM2.54-2P etc..
For electronic surveying ruler in the utility model in working condition, operating terminal sends power supply instruction to control unit,
Power supply unit is powered under control unit control, and stretching the elastic conductor makes it be aligned with determinand both ends, and elastic conductor occurs
Deformation, impedance measuring unit detection practical impedance are shown in display terminal, and specific measurement method is as follows：
(1) prepare two pieces structure, shape, the identical elastic conductor of property, one is used as sample, and one as survey
Amount is used；Sample elastic conductor both ends are electrically connected on the connectors first, are surveyed using impedance under certain testing conditions
Amount unit detection stretches impedance variations information of sample when being deformed upon with elastic conductor, obtains tensile deformation amount and impedance
Correspondence；
(2) measurement elastic conductor both ends are electrically connected on the connectors, are kept and the identical measuring condition of step (1)；
Power supply instruction is sent to control unit using operating terminal, power supply unit starts to power under control unit control；Then, it controls
Unit carries out Zero calibration or operating terminal to elastic conductor automatically and sends calibration starting point instruction, control to control unit
Unit is using a certain position of elastic conductor as zero；The dead-center position of the elastic conductor is aligned to one end of determinand, is stretched
For elastic conductor to the other end of determinand, the present impedance value that impedance measuring unit detects elastic conductor is simultaneously aobvious by display terminal
Show；
(3) correspondence that reference step (1) obtains is worth to corresponding tensile deformation amount according to present impedance, through meter
It calculates and obtains determinand length.
Preferably, the correspondence obtained in the step (1) is stored in control unit；In step (2)
To after present impedance value, control unit analyzes present impedance value according to the correspondence, is shown after obtaining length to be measured
In display terminal.
In conclusion the utility model applies elastic conductor in measuring scale technical field, using elastic conductor in deformation
The changed property of process middle impedance obtains length value to be measured by detecting impedance.Electronic surveying provided by the utility model
Ruler is simple in structure, since elastic conductor can carry out the deformations such as more times of stretchings, torsion, folding, can realize irregularly shaped object
Linear measure longimetry, have the characteristics that a wide range of, high-precision, portable, intelligence and be hardly damaged, have very in terms of electronic surveying ruler
Good application prospect.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model electronic surveying ruler；
Fig. 2 is the structure diagram of controller in Fig. 1；
Reference numeral in Fig. 1-2 is：1 controller, 2 connectors, 3 elastic conductors, 4 impedance measuring units, 5 controls are single
Member, 6 display terminals, 7 operating terminals, 8 power supply units.
Specific implementation mode
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings, it should be pointed out that following institute
It states embodiment to be intended to convenient for the understanding to the utility model, and does not play any restriction effect to it.
Embodiment 1：
As shown in Figure 1, a kind of novel electron measuring scale in the present embodiment includes controller 1, connector 2 and elastic wire
3.As shown in Fig. 2, controller 1 includes impedance measuring unit 4, control unit 5, display terminal 6, operating terminal 7 and power supply unit
8。
The both ends A, B of elastic wire 3 are connected to connector 2, and electrical circuit can be formed under electric power thus supplied.Impedance measuring unit
4 one end are connected with connector 2, and the other end is connected with control unit 5.Display terminal 6 is liquid crystal display terminal, single with control
Member 5 is connected, and shows current measured value.Operating terminal 7 is connected with control unit 5, includes mainly power key and demarcating key.
Power supply unit 8 is that impedance measuring unit 4, display terminal 6 and control unit 5 are powered.
Elastic wire in the present embodiment is combined by elastomer and liquid metal, and elastomer is selected from thermoplastic elastomer (TPE)
TPE, liquid metal are GaInSn or GaIn alloys.Elastomer constitutes hollow tube body, and liquid metals is located at the hollow of the tube body
In cavity.
In the present embodiment, the conductivity of liquid metal is better than 3.8*106s/m。
In the present embodiment, elastic wire can be stretched at C, maximum is stretchable to 9 times of its raw footage.
In the present embodiment, the preparation method of the electronic surveying ruler is as follows：
In elastomer formation, elastomer is prepared into hollow tube structure using mold, then, at ambient temperature will
Liquid metal pours into the hollow cavity of the tube body, and conductive contact directly seals the both ends of tube body, obtains elastic wire.
In the present embodiment, impedance measuring unit is based on AD5933 chips, it can be achieved that high-precision impedance detection.
In the present embodiment, master controller uses STM32F103C8T6 in control unit.
In the present embodiment, liquid crystal display terminal uses the OLED display screen of 128 × 32 dot matrix, and OLED actively shines and power consumption
It is low.
In the present embodiment, operating terminal includes power key and demarcating key, wherein pressing power key can control power supply unit
Power supply, to control the switch of electronic ruler；The a certain location position of superelastic wire can be the starting measured by pressing demarcating key
Zero.
In the present embodiment, power supply unit uses 3.7V rechargeable lithium batteries.
In the present embodiment, connector includes that specifications and models are XH2.54-2P, VH3.96-2P, KF2510-2P, CH3.96-
One kind in 2P, PH2.0-2P, SM2.54-2P.
In the present embodiment, impedance measuring unit, control unit, display terminal, operating terminal and power supply unit are all integrated in
In PCB circuit board two-sided one piece of area 4cm × 2cm.Connector is welded on the pcb board.In practical applications, by elastic conducting
Line ends A, B electrical connections are on the connectors.
In the present embodiment, along its length, the shape of elastic wire is consistent, performance is identical.
In the present embodiment, the specific measurement method of the electronic surveying ruler is as follows：
(1) one section of elastic wire is intercepted as sample, first on the connectors by sample both ends electrical connection, certain
The sample is detected using impedance measuring unit under testing conditions and carry out impedance variations information when stretching deforms upon in C-terminal, obtain
To the table of comparisons of tensile deformation amount and impedance；
(2) on the connectors by the electrical connection of elastic wire both ends, it keeps and the identical measuring condition of step (1)；Press behaviour
The power button for making terminal, power supply unit starts to power under control unit effect；It is automatic in tensionless winkler foundation control unit
Elastic wire is demarcated, determines the calibration button of zero or push terminal, is made with a certain position of elastic wire
For zero；The dead-center position of elastic wire is aligned to one end of determinand, the C-terminal of tensile elasticity conducting wire to determinand it is another
End is detected the impedance variation amount of elastic wire in drawing process middle impedance measuring unit and is shown by liquid crystal display terminal in real time
Show, when elastic wire C-terminal is aligned with the other end of determinand, the impedance value that liquid crystal display device is shown is present impedance value；
(3) table of comparisons that reference step (1) obtains is worth to corresponding tensile deformation amount according to present impedance, is computed
Obtain determinand length.
Embodiment 2：
In the present embodiment, structure, the preparation method of electronic surveying ruler are complete with structure, the preparation method in embodiment 1 respectively
It is exactly the same.Except that：In the specifically used method of the electronic surveying ruler, the table of comparisons obtained in step (1) is stored in
In control unit；After obtaining present impedance value in step (2), control unit divides present impedance value according to the table of comparisons
Analysis, liquid crystal display terminal is shown in after obtaining length to be measured.
Embodiment 3：
In the present embodiment, the structure and the structure in embodiment 1 of electronic surveying ruler are essentially identical, except that liquid is golden
Metal particles disperse in the elastomer, and the method for preparing elastic wire is：The elastomer of liquid metal and melting is stirred
It is even, then cure elastomer therein, obtains elastic wire.
Embodiment 4：
In the present embodiment, the structure and the structure in embodiment 1 of electronic surveying ruler are essentially identical, except that elastic conducting
The preparation method of line is：Thermoplastic elastomer (TPE) TPE is heated into the elastomer of melting, liquid metal is coated to the melting
Surface of elastomer, then by the elastomer coated of the melting to liquid metal surface, then cooling is formed by curing elastic wire.
The technical solution of the utility model and advantageous effect is described in detail in embodiment described above, it should be understood that
Be to be not intended to limit the utility model the foregoing is merely specific embodiment of the utility model, it is all in the utility model
Spirit in any modification and improvement etc. for being done, should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of electronic surveying ruler, it is characterized in that：The changed elastic conductor of impedance, connector and control when including deforming upon
Device processed；Controller is made of impedance measuring unit, control unit, power supply unit, display terminal and operating terminal；
The both ends of elastic conductor are connected with connector, and electrical circuit can be formed under electric power thus supplied；Impedance measuring unit with connect
Device is connected, the impedance for measuring elastic conductor；
Control unit is connected with power supply unit, impedance measuring unit and display terminal, for controlling power supply unit power supply, with
And impedance measuring unit carries out impedance measurement and includes in display terminal by measurement result；
Operating terminal is connected to control unit, is instructed for being sent to control unit；
Power supply unit is used to power for measuring unit, control unit, display terminal and operating terminal.
2. electronic surveying ruler as described in claim 1, it is characterized in that：The elastic conductor includes that can send out under external force
The elastomer of raw deformation and conductive liquid metal, the elastomer constitute hollow cavity, and liquid metals is located at the hollow cavity
In vivo.
3. electronic surveying ruler as described in claim 1, it is characterized in that：The elastic conductor includes that can send out under external force
The thermoplastic elastomer (TPE) of raw deformation and conductive liquid metal, the elastic conductor is that thermoplastic elastomer (TPE) is heated into melting
Elastomer after liquid metal is coated to the surface of elastomer of the melting, then by the elastomer coated of the melting to liquid metal
Then surface cools down curing elastomer and the layer structure that is formed.
4. electronic surveying ruler as described in claim 1, it is characterized in that：The elastic conductor includes that can send out under external force
The thermo-setting elastomer of raw deformation and conductive liquid metal, the elastic conductor are using thermo-setting elastomer as elastic base
Liquid metal is coated to behind elastic substrates surface and the thermo-setting elastomer is coated to liquid metal surface again by bottom, then adds
Thermoset elastomer and the layer structure formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820078709.7U CN207936906U (en) | 2018-01-17 | 2018-01-17 | A kind of electronic surveying ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820078709.7U CN207936906U (en) | 2018-01-17 | 2018-01-17 | A kind of electronic surveying ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207936906U true CN207936906U (en) | 2018-10-02 |
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ID=63648948
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820078709.7U Active CN207936906U (en) | 2018-01-17 | 2018-01-17 | A kind of electronic surveying ruler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151640A (en) * | 2018-01-17 | 2018-06-12 | 中国科学院宁波材料技术与工程研究所 | Application, electronic surveying ruler and measuring method of the elastic conductor in measuring scale |
-
2018
- 2018-01-17 CN CN201820078709.7U patent/CN207936906U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151640A (en) * | 2018-01-17 | 2018-06-12 | 中国科学院宁波材料技术与工程研究所 | Application, electronic surveying ruler and measuring method of the elastic conductor in measuring scale |
| CN108151640B (en) * | 2018-01-17 | 2024-04-16 | 中国科学院宁波材料技术与工程研究所 | Application of elastic conductor in measuring ruler, electronic measuring ruler and measuring method |
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