CN202815011U - Resistance type six-degree-of-freedom accelerometer - Google Patents
Resistance type six-degree-of-freedom accelerometer Download PDFInfo
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- CN202815011U CN202815011U CN 201220057273 CN201220057273U CN202815011U CN 202815011 U CN202815011 U CN 202815011U CN 201220057273 CN201220057273 CN 201220057273 CN 201220057273 U CN201220057273 U CN 201220057273U CN 202815011 U CN202815011 U CN 202815011U
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- acceleration
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Abstract
Provided is a resistance type six-degree-of-freedom accelerometer, utilizing a sensor to generate acceleration to make a conductor pointer and an elastic sliding rheostat move relative to an inner wall of the sensor based on inertia, thereby changing a resistance value entering to a circuit and obtaining an acceleration case of a sensor adhesion rigid body. According to the utility model, at an elastic link point of a centre of sphere of a hollow non-insulated hemispheroid spherical shape container, elastic conductive materials used for fixing positions are in connection with one end of the conductor pointer, and the other end of the conductor pointer is in contact with a resistor inner surface of an upper hemisphere cavity for free motion. The bottoms of two hemisphere containers are placed oppositely, between which a cylindrical elastic sliding rheostat is provided to communicate the two hemispheres. In operation, when the sensor adhesion rigid body generates acceleration, a resistance value entering to a circuit can be changed by inertial motion of the conductor pointer relative to the resistor inner surface of an upper hemisphere cavity and motion of the elastic sliding rheostat; the acceleration case of the rigid body can be obtained only by processing one data. The resistance type six-degree-of-freedom accelerometer is easy to process data, has low costs and high reliability and is convenient for large scale application.
Description
Technical field
The utility model belongs to the electronic component sensor field; relate to a kind of brand-new acceleration transducer that utilizes the inertial acceleration principle to make; can be applicable in the industries such as artificial intelligence, electric power, electronics, chemical industry, machinery, traffic, robotization, war industry monitoring, description, protection to instrument, equipment moving, can provide a kind of more easy and economical and practical monitoring method to the description of motion.
Background technology
Acceleration transducer is the testing tool that this physical signalling of degree of will speed up is transformed into the electric signal of being convenient to measure.Common are different capacitance dynamic balance acceleration transducer, piezoelectric acceleration transducer etc.Different capacitance dynamic balance acceleration transducer is the electric capacitance change that tested acceleration is converted to capacitor.The method that realizes this function has the change gap, and variable area becomes three kinds of dielectric constants, and it is had relatively high expectations to insulation resistance, and stray capacitance (in lead capacitance and the instrument between each components and parts and pole plate electric capacity etc.) is very important.Piezoelectric acceleration transducer mainly utilizes the heteropolar crystal that does not have symcenter to add thereon external force except making crystal deforms, also will change the polarized state of crystal, set up electric field at crystals, this because mechanical force makes medium occur to polarize.Common have silicon micro-acceleration sensor, but its frequency influence narrow range, need the sophisticated signal treatment circuit.
Also have a lot of other methods to make acceleration transducer, such as piezo resistive technology, capacity effect, the thermal effect, luminous effect, but its most basic principle all is to produce distortion because acceleration produces certain medium, by measuring its deflection and changing into Voltage-output with interlock circuit.
But the total shortcoming of above various sensor is that direction of measurement is single, and the use that need combine in the practical application virtually increased cost, and data processing amount is larger.Acceleration transducer such as the condenser type that utilizes micro electro mechanical system (MEMS) technology with a plurality of single shafts, pressure resistance type, piezoelectric type and other principles is integrated into realization Multidimensional acceleration sensing on the monolithic silicon chip.This method has improved the microminiaturization degree of acceleration transducer, but has reduced the mechanical precision of acceleration transducer, is difficult to bear larger overload.The combination that utilization sticks on the foil gauge on the diaphragm realizes 6 dimension acceleration sensings.This analytical approach is complicated, and acceleration decoupling zero difficulty does not also have very complete analysis at present.Adopt static superconduction principle to realize 6 dimension acceleration sensings.Can only be used under the microgravity environment, more complicated, cost is also higher.Adopt many single-axis acceleration sensors to make up and realize the six-dimension acceleration sensing.Its ultimate principle be by the output that is fixed on many single-axis acceleration sensors on the same rigid body isolate rigid body along three orthogonal axes of space inertial coordinate system to linear acceleration a
iWith angular acceleration ω
i, by calculating the acceleration of 6 dimensions.
This paper proposes and has studied a kind of principle of tieing up acceleration transducers based on 6 of hemisphere and cylinder unitized construction, the monodrome sensor of 4 different models joined end to end be fixed on the rigid body, the computing by the synthetic numerical value of three calculates current rigid body in the acceleration situation of six-freedom degree.
Summary of the invention
The utility model proposes in view of the above problems, purpose is to provide a kind of more easy acceleration transducer, can detect the acceleration signal of six-freedom degree, it can not reduce the sensitivity that detects vibration, mainly just can obtain the acceleration situation of six-freedom degree by numerical signal of simple routine processes.
For achieving the above object, the technical solution adopted in the utility model is: a kind of resistance-type six degree of freedom monodrome sensor is at the centre of sphere place of a hollow conductor hemisphere spherical container, stretch out a conductor pointer isometric with radius that certain mass is arranged by an elasticity point of contact, namely fix a conductor pointer with elastic conducting material, contact with the hemisphere chamber wall and to link to each other all the time and can in diameter of Spherical Volume, freely rotate around the elasticity point of contact, this conductor pointer can be because of relatively spherical container motion of the accelerated motion of container, thereby makes the electric current vessel surface diverse location of flowing through.Two identical and symmetrical placements of identical semiglobe, add columniform Elastic Sliding rheostat structure in the middle of the two hemispheres, the two hemispheres centre of sphere is communicated with, can changes its resistance because of the acceleration perpendicular to hemisphere ground direction simultaneously, thereby measure the linear acceleration component in this direction.Electric current can flow through from a hemisphere top this hemisphere conductor pointer, Elastic Sliding rheostat, another hemisphere conductor pointer, and flow out from another hemisphere top.The spherical container external structure is regulated its shape as required, makes the conductor pointer obtain different resistance values when diverse location.Single the utility model is one group, can measure the three-dimensional line acceleration; Two the utility model consist of one group, join end to end and place on the rigid body, each sensor conductor pointer each resistance when same position is certain complementary relationship, can draw three-dimensional line acceleration and three dimensional angular acceleration according to each other interval and the difference of the two conductor pointer position, can not measure two the utility model and just be positioned at angular acceleration on the rigid motion circumference; Four the utility model consist of one group, not all are positioned to be arranged on the rigid body on any circumference and to join end to end to form a path, and the voltage swing difference that draws according to the difference of with each other interval and four conductor pointer positions can calculate six amount of acceleration.In the practical application, this sensor is attached on the rigid body to be measured, and relative with its maintenance static, and the sensor acceleration is rigid body acceleration.
1, in such scheme, when one group of sensor is static, magnitude of voltage under the resistance that its conductor pointer position and the combination of elasticity rheostat obtain can be exchanged into the current acceleration of gravity that is subject to as calculated, and the motion after following the tracks of by coordinate transform with this as the starting point.
2, in such scheme, sensor makes sensor charged by the outside wire of introducing of on-insulated spherical container, and this electric weight is known.
Because the application of technique scheme, the utility model compared with prior art has following advantages:
1, because employing of the present utility model utilizes the variation of resistance to obtain obvious single digital signal, be simple and easy to usefulness so that corresponding signal is processed, and greatly reduced production cost, improved the reliability of system.
2, the utility model structural principle is simple, and Manufacture and application is very convenient, is convenient to extensive large-scale application.
Description of drawings
The below describes embodiment of the present utility model in detail based on accompanying drawing, in the accompanying drawing:
Accompanying drawing 1 is the front view of single-sensor.
Space distribution and wire connection layout when accompanying drawing 2 is a plurality of sensor spatial forms (not comprising hemisphere cavity resistance outer shape) and actual the use.
In the above accompanying drawing: 1 is the resistance of first spheroid cavity, and 6 is the resistance of second spheroid cavity, and 5 is column resistance, and shape and resistance sizes are according to circumstances decided; 2 conductor pointers; 3 elasticity points of contact; 4 Elastic Sliding rheostats; 7 wires, linking to each other with shell does not link to each other with the conductor pointer; 8 hollow cavitys;
Wherein, thick black line is that roughly analog current flows to.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
With reference to accompanying drawing 1, present embodiment is in the position of the elasticity point of contact 3 at a hollow on-insulated hemisphere spherical container centre of sphere place, connect an end of a conductor pointer 2 with the elastic conducting material of fixed position, and another termination of conductor pointer 2 be contacted with first spheroid cavity resistance 1 inside surface and can be at this apparent motion.Two these hemisphere container bottoms are staggered relatively, and the middle Elastic Sliding rheostat 4 that adds is to be communicated with two halves spheroid cavity resistance, and Elastic Sliding rheostat 4 can change its elongation because of the axial acceleration in its place, thereby changes the resistance in column resistance 5 places in circuit.Electric current enters from wire 7, and the resistance 1 of the resistance 6 of second spheroid cavity of flowing through, lower semisphere pointer, column resistance 5, conductor pointer 2, first spheroid cavity flows out from a upper hemisphere wire again.During use, the shape of the resistance 6 of the resistance 1 of first spheroid cavity, column resistance 5, second spheroid cavity and resistance be designed, designed as required.When the rigid body that sensor adheres to produces acceleration, by the inside surface generation inertia motion of conductor pointer 2 with respect to the inside surface of the resistance 1 of first spheroid cavity and second spheroid cavity resistance 6, and the motion of Elastic Sliding rheostat 4, change the resistance of resistance in the place in circuit, can draw the acceleration situation of rigid body by data.
With reference to accompanying drawing 2, the position that present embodiment utilizes the present invention of a plurality of different models to be attached on the rigid body is different, diverse location has different linear acceleration values when rigid body has angular acceleration, so the pointer position of different sensors and elasticity rheostat resistance may be different, can calculate angular acceleration values according to this difference.
Claims (5)
1. resistive acceleration sensor with six degrees of freedom, it is characterized in that the elasticity point of contact (3) at a hollow on-insulated hemisphere spherical container centre of sphere place, fix a conductor pointer (2) with elastic conducting material, two these hemisphere container bottoms are staggered relatively, the middle Elastic Cylindrical slide rheostat structure (4) that adds is to be communicated with two hemispheres, electric current can be entered from the wire (7) of lower semisphere, flow through the part second spheroid cavity resistance (6), the lower semisphere pointer, the part of column resistance (5) place in circuit, the conductor pointer (2) of episphere, the resistance (1) of first spheroid cavity of part flows out from a upper hemisphere wire again.
2. resistive acceleration sensor with six degrees of freedom as claimed in claim 1 is characterized in that wire links to each other with resistance (1) external stability place of first spheroid cavity, and conductor pointer (2) links to each other all the time with resistance (1) inside of first spheroid cavity.
3. resistive acceleration sensor with six degrees of freedom as claimed in claim 1, it is characterized in that elasticity point of contact (3) is positioned at centre of sphere place all the time, and an end of bonding conductor pointer (2) makes conductor pointer (2) other end can be at resistance (1) inner surface movement of first spheroid cavity.
4. resistive acceleration sensor with six degrees of freedom as claimed in claim 1 is characterized in that Elastic Sliding rheostat (4) can change its elongation because of the axial acceleration in its place, thereby changes the resistance in column resistance (5) place in circuit.
5. resistive acceleration sensor with six degrees of freedom as claimed in claim 1 is characterized in that the upper and lower hemispheres body structure is identical and symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220057273 CN202815011U (en) | 2012-02-10 | 2012-02-10 | Resistance type six-degree-of-freedom accelerometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220057273 CN202815011U (en) | 2012-02-10 | 2012-02-10 | Resistance type six-degree-of-freedom accelerometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202815011U true CN202815011U (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220057273 Expired - Fee Related CN202815011U (en) | 2012-02-10 | 2012-02-10 | Resistance type six-degree-of-freedom accelerometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202815011U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539828A (en) * | 2012-02-10 | 2012-07-04 | 柴源 | Resistive acceleration sensor with six degrees of freedom |
-
2012
- 2012-02-10 CN CN 201220057273 patent/CN202815011U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539828A (en) * | 2012-02-10 | 2012-07-04 | 柴源 | Resistive acceleration sensor with six degrees of freedom |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20140210 |