CN203241436U - Calibration apparatus for multi-axis micro motion sensor - Google Patents
Calibration apparatus for multi-axis micro motion sensor Download PDFInfo
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- CN203241436U CN203241436U CN 201320273535 CN201320273535U CN203241436U CN 203241436 U CN203241436 U CN 203241436U CN 201320273535 CN201320273535 CN 201320273535 CN 201320273535 U CN201320273535 U CN 201320273535U CN 203241436 U CN203241436 U CN 203241436U
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Abstract
The utility model discloses a calibration apparatus for a multi-axis micro motion sensor. The calibration apparatus includes a motor, a transmission shaft, a tripod and calibration circuit boards; the tripod is composed of a vertical surface and two equilateral inclined planes, wherein the two inclined planes form an angle theta with an axis; the calibration circuit boards are in a symmetrical structure, and have circuit layout and wires which are connected with an electrical signal testing instrument; the motor is connected with the transmission shaft; the transmission shaft is connected with the tripod; a rotational force generated by the motor is transferred to the tripod through the transmission shaft; and the calibration circuit boards are symmetrically fixed on the two equilateral inclined planes of the tripod. According to the calibration apparatus of the utility model, only one motor is required; a magnetic field of an external environment is adopted as an excitation signal source for a geomagnetic sensor; the motor is separated from samples to be calibrated by a certain distance, such that the motor exerts little interference on the magnetic field excitation signal source, and therefore, calibration can be more accurate; and the calibration apparatus is advantageous in simplicity, low cost and high productivity.
Description
Technical field
The utility model patent relates to the miniature motion sensor of a kind of multiaxis field, specially refers to the correcting device of the miniature motion sensor of a kind of multiaxis.
Background technology
Microsensor, particularly MEMS (micro electro mechanical system) (MEMS) sensor is used to that natural physical quantity is converted to electric signal and supplies with microprocessor, and real world and computer are linked, and has consisted of the foundation stone of internet.
Miniature motion sensor comprises gravity sensor, angular-rate sensor, geomagnetic sensor, and their combination, is used for motion and the attitude of perceptual object.Along with its on the mobile electronic devices such as mobile phone, panel computer widespread use and enter consumer's life.What enter the earliest mobile electronic product is gravity sensor, then is geomagnetic sensor, is angular-rate sensor at last.Gravity sensor is a kind of acceleration transducer, is used for perceptual object and the angle of terrestrial gravitation direction, the movement of falling object of object, the linear movement of object etc.; Angular-rate sensor is used for the rotational speed of perceptual object; Geomagnetic sensor is used for the relative angle of perceptual object and magnetic field of the earth direction.But each sensor is perception x, y, three axial signals of z all.Consumer mobile electronic device requirement electronic devices and components volume is little, low in energy consumption, low price, so the increasing miniature motion sensor of combination type multi-shaft is employed, as gravity sensor and geomagnetic sensor are combined into 6 axle sensors, gravity sensor and angular-rate sensor are combined into 6 axle sensors, and gravity sensor, geomagnetic sensor, angular-rate sensor are combined into 9 axle sensors.
Because miniature motion sensor manufacture process very complex, take the MEMS sensor as example, relate to the english abbreviation of the processing of MEMS disk, ASIC(Application Specific Integrated Circuit, the manufacture processes such as the integrated circuit that finger designs for special purpose) disk processing, chip package, wherein any procedure is made mistakes, the capital exerts an influence to the performance of MEMS sensor, particularly causes the performance between each sensor inconsistent.And user's needs are analog physical amounts of perception real world, and the sensor of same model must have same performance.So before the microsensor product export, must carry out one by one parametric calibration, as zero partially, sensitivity etc., obtain the consistent product of performance to guarantee the client.
Want calibrating sensors just must apply a certain amount of exciting signal source to sensor, the initial output valve of survey sensor, the control circuit regulation output value by sensor internal again obtains meeting the product of standard of dispatching from the factory.That is to say, the calibration gravity sensor must apply a certain amount of gravity; The collimation angle speed pickup must apply a certain amount of rotational speed; The calibration geomagnetic sensor must apply a certain amount of magnetic field.The measuring head of the calibrating installation of prior art as shown in Figure 1 and Figure 2, it has a precision motor 11 and respectively control framework 12 and rotating shafts 16 of precision motor 13, drives test bench 14 and rotates along x axial line A and y axial line B.
When the calibration gravity sensor, terrestrial gravitation as exciting signal source, because object on earth all is subject to the gravitational effect of the earth, is produced 1 (9.8 m/s of terrestrial gravitation unit
2) acceleration, be called 1g, direction is pointed to the earth's core.So sample 15 to be calibrated is subject to the reacting force of test bench 14, namely be subject to being the acceleration effect of 1g against the earth's core direction, size.When measuring, when state shown in Figure 1, the y of sample 15 to be calibrated is parallel with terrestrial gravitation, stressed+1g axially; X is axially vertical with terrestrial gravitation, stressed 0g; Z is axially vertical with terrestrial gravitation, stressed 0g.When precision motor 11 driver frameworks 12 turned over 90 ° clockwise along x axial line 90, the z of sample 15 to be calibrated is parallel with terrestrial gravitation, stressed+1g axially; X is axially vertical with terrestrial gravitation, stressed 0g; Y is axially vertical with terrestrial gravitation, stressed 0g.By that analogy, can record zero partially initial output valve and the zero initial output valve of sensitivity of y axle and the z axle of sample 15 to be calibrated.Then control precision motor 13 drive shafts 16 and turn over clockwise 90 ° along Y-axis heart line B, form state shown in Figure 2.This moment sample to be calibrated front 15 ' towards-x direction, the y of sample 15 to be calibrated is parallel with terrestrial gravitation, stressed+1g axially; X is axially vertical with terrestrial gravitation, stressed 0g; Z is axially vertical with terrestrial gravitation, stressed 0g.When motor 11 driver frameworks 12 turned over 90 ° clockwise along x axial line A, the x of sample 15 to be calibrated is parallel with terrestrial gravitation, stressed+1g axially; Y is axially vertical with terrestrial gravitation, stressed 0g; Z is axially vertical with terrestrial gravitation, stressed 0g.By that analogy, can record zero partially initial output valve and the zero initial output valve of sensitivity of x axle and the y axle of sample 15 to be calibrated.Like this, the x of sample to be calibrated, y, three axial initial output valves of z have all measured, and regulate final output valve by the control circuit of sensor internal, have just finished the calibration of gravity sensor.
When the collimation angle speed pickup, produce pumping signal by revolution.When measuring, when Fig. 1 state, motor 11 driver frameworks 12 rotate along x axial line A, drive sample 15 to be calibrated in the rotation of x direction of principal axis by rotating shaft 16 and test bench 15, treat calibration sample 15 and apply the excitation of x axis angular rate signal; Motor 13 drive shafts 16 are rotated along y axial line B, drive sample 15 to be calibrated in the rotation of y direction of principal axis by test bench 14, treat calibration sample 15 and apply the excitation of y axis angular rate signal.Then control motor 13 drive shafts 16 and rotate the state shown in Figure 2 that arrives along y axial line B, this moment sample 15 to be calibrated front 15 ' towards-x direction, motor 11 driver frameworks 12 rotate along x axial line A, drive sample 15 to be calibrated in the rotation of z direction of principal axis by rotating shaft 16 and test bench 14, treat calibration sample 15 and apply the excitation of z axis angular rate signal.Like this, the x of sample to be calibrated, y, three axial initial output valves of z have all measured, and regulate final output valve by the control circuit of sensor internal, have just finished the calibration of angular-rate sensor.
When the calibration geomagnetic sensor, in the measuring head of the calibrating installation of Fig. 1, prior art shown in Figure 2, sample 15 to be calibrated is very near apart from CD- ROM drive motor 11 and 13, the disturbing magnetic field that motor produces is very strong, utilize the external magnetic field to become impossible as exciting signal source, so can only in test bench 14 internal coil, produce x, y, the magnetic field of z direction is as the exciting signal source of calibration sample 15.
In sum, existing correcting device need be used two CD-ROM drive motor, produces 3 axial pumping signals.And, because CD-ROM drive motor is too near apart from sample to be calibrated, disturb too large to the magnetic field excitation signal source, when the calibration geomagnetic sensor, can only be in test bench internal coil, produce magnetic field, increased the volume of test bench, namely reduce the sample size that at every turn can calibrate simultaneously, namely reduced production capacity.In a word, existing correcting device complex structure, equipment price is expensive, and production capacity is limited, and responsive especially to price, not too in the production of the harsh miniature motion sensor of consumer level multiaxis, the shared cost of equipment amortization is too high to performance requirement.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiency that prior art exists, the correcting device of the miniature motion sensor of a kind of multiaxis is provided, CD-ROM drive motor of this device just, utilize the magnetic field of external environment condition to make the exciting signal source of geomagnetic sensor, have equipment simple, the characteristics that cost is low, and also motor distance sample to be calibrated has certain distance, motor disturbs less to the magnetic field excitation signal source, it is more accurate to calibrate.
For solving the problems of the technologies described above, the utility model provides the correcting device of the miniature motion sensor of a kind of multiaxis, comprises motor, transmission shaft, tripod and calibration circuit board;
Tripod is comprised of a vertical plane and two equilateral inclined-planes, and vertical plane is parallel with the terrestrial gravitation direction, and two equilateral inclined-planes and axial line are at angle;
Calibration circuit board has symmetrical structure and configuration, has wire to connect with the electrical signal tester device;
Motor is connected with transmission shaft, and transmission shaft is connected with the vertical plane of tripod, and the rotating force that motor produces is transferred on the tripod by transmission shaft, and calibration circuit board is fixed on two equilateral inclined-planes of tripod symmetrically.
During calibration, sample to be calibrated is installed in the fixed position of calibration circuit board by certain orientation, applies pumping signal, rotation motor, record the initial output valve of sample to be calibrated, regulate final output valve by the built-in control circuit of sample to be calibrated, can realize treating the calibration of calibration sample.Correcting device of the present utility model is simple in structure, three-legged structure has guaranteed the stationarity of rotating, motor drives calibration circuit board and sample to be calibrated rotation again by the rotation of transmission shaft drive tripod, tripod, between motor and the sample to be calibrated a fixed range arranged, motor disturbs less to the magnetic field excitation signal source, it is more accurate to calibrate.
Have flange, flange to be connected with an end of shaft coupling on the motor, the shaft coupling other end is connected with transmission shaft, and transmission shaft is fixed on the support by bearing.Motor drives transmission shaft and rotates by shaft coupling connection for transmission axle, but the weight of not bearing transmission shaft has guaranteed the stationarity of rotating; Transmission shaft is fixed on the support by bearing, the weight that can bear tripod, calibration circuit board, sample to be calibrated, and load capacity is large.
Tripod is made by nonmagnetic substance, when having avoided the calibration geomagnetic sensor to the interference of magnetic field excitation signal source.
The miniature motion sensor of described multiaxis comprise gravity sensor, angular-rate sensor, geomagnetic sensor and their combination.
When carrying out the calibration of sample to be calibrated, sample to be calibrated is installed on the calibration circuit board, sample to be calibrated on calibration circuit board the installation site and axial line project into a fixed angle.
When the calibration gravity sensor, sample to be calibrated is subject to gravitational reacting force at x, y, three axial components of z, revolution 90
o, 180
o, 270
o, record rotates the initial output valve of sample to be calibrated under forward and backward each position, regulates final output valve by the built-in control circuit of sample to be calibrated again, reaches the alignment purpose of gravity sensor;
In collimation angle speed pickup process, when the motor uniform rotation, sample to be calibrated is subject to x, y, the pumping signal of three axial angular velocity components of z, record the initial output valve of each axle of sample to be calibrated, regulate final output valve by the built-in control circuit of sample to be calibrated again, reach the alignment purpose of angular-rate sensor.
During the calibration of geomagnetic sensor, utilize the external magnetic field of a fixed-direction or directly utilize the magnetic field of the earth as exciting signal source, revolution 90
o, 180
o, 270
o, record rotates the x of sample to be calibrated under forward and backward each position, y, and the initial output valve of three axles of z is regulated final output valve by the built-in control circuit of sample to be calibrated again, reaches the alignment purpose of geomagnetic sensor.
Description of drawings
Fig. 1 is the schematic diagram of measuring head when state 1 of the calibrating installation of prior art.
Fig. 2 is the schematic diagram of measuring head when state 2 of the calibrating installation of prior art.
Fig. 3 is the miniature motion sensor correcting device of the utility model multiaxis initial (0
o) position view.
Fig. 4 is the miniature motion sensor correcting device 90 of the utility model multiaxis
oPosition view.
Fig. 5 is the miniature motion sensor correcting device 180 of the utility model multiaxis
oPosition view.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The correcting device of the miniature motion sensor of multiaxis as shown in Figure 3, comprises motor 21, flange 22, shaft coupling 2., bearing 24, transmission shaft 25, support 28, tripod 26, calibration circuit board 27a and calibration circuit board 27b.
A flange 22 is arranged on the described motor 21, and flange 22 is for are connected the parts that connect with shaft coupling on the motor 21; Shaft coupling 23 is the parts for connecting flange 22 and transmission shaft 25,23 on shaft coupling transmission rotating force, and the weight of not bearing transmission shaft 25 is avoided directly being connected the stationarity of assurance rotation between motor 21 and the transmission shaft 25; The rotating force that motor 21 produces is transferred on the transmission shaft 25 by flange 22 and shaft coupling 23; Transmission shaft 25 is fixed on the support 28 by bearing 24, and transmission shaft 25 1 ends connect tripod 26, and described tripod 26 is comprised of a vertical plane 26a and two equilateral inclined- plane 26b, 26c, and two inclined- plane 26b, 26c and the axial line 30 of tripod are into θ angle.Vertical plane 26a is parallel with terrestrial gravitation 32 directions, and adopting the purpose of three-legged structure is that its structural stability is good, and symmetry is high, rocks little when rotating; Tripod 26 usefulness nonmagnetic substances are made, and avoid when the calibration geomagnetic sensor equipment itself to the interference of magnetic field excitation signal.The rotating force that motor 21 produces is transferred on the tripod 26 by transmission shaft 25; Calibration circuit board 27a and 27b are fixed on two the inclined- plane 26b and 26c of tripod symmetrically, because transmission shaft 25, tripod 26, the weight of circuit board 27a, 27b and sample 29a to be calibrated, 29b, 29c and 29d is all supported by bearing 24,21 in motor is responsible for providing rotating force, the load capacity of equipment is strong, once can load a plurality of samples, production capacity is high.
Because across transmission shaft 25 and tripod 26, have certain distance between motor 21 and sample 29a to be calibrated, 29b, 29c and the 29d, the interference of 21 pairs of magnetic field excitation signal sources 31 of motor is very little, does not affect the calibration of geomagnetic sensor.
Described calibration circuit board 27a and 27b have symmetrical structure and configuration, there is wire to link to each other with the electrical signal tester device, be used to offering sample power supply to be calibrated and signal output channels, read and export the initial value of sample to be calibrated under the different excitation signal state, the input calibration parameter is regulated final output valve.
During calibration, be installed in sample 29a to be calibrated, 29b on the fixed position of calibration circuit board 27a by certain orientation, as shown in Figure 4,30 one-tenth β angles of sample 29a ' to be calibrated, 29b ' and axial line, be installed in the first half of axial line 30,30 one-tenth β angles of sample 29a ' ' to be calibrated, 29b ' ' and axial line are installed in the Lower Half of axial line 30, and the position of sample 29a ' to be calibrated, 29b ' and 29b ', 29a ' is along axial line 30 symmetries.Equally, sample 29c to be calibrated, 29d are installed in by the certain orientation symmetry on the fixed position of calibration circuit board 27b, 30 one-tenth β angles of all samples to be calibrated and axial line.
When equipment was worked, axial line 30 was vertical with terrestrial gravitation direction 32, Figure 3 shows that initial position, and the vertical plane 26a of tripod 26 is parallel with terrestrial gravitation direction 32, and calibration circuit board 27a is upper, and calibration circuit board 27b is lower.
The calibration of angular-rate sensor:
When motor 21 during with the angular velocity omega uniform rotation, angular velocity pumping signal 33 is applied on the sample to be calibrated, and sample to be calibrated is respectively in x, y, three angular velocity pumping signal sizes of axially sensing of z:
ω(x)?=ω*cosθ*cosβ
ω(y)?=ω*cosθ*sinβ
ω(z)?=ω*sinθ
Corresponding x, y, three axial output valves of z are respectively U (x), U (y), U (z).The output valve of sample to be calibrated when motor 21 does not rotate is respectively U (x for initial zero inclined to one side output valve
0), U (y
0), U (z
0), the output valve when being rotated by motor 21 calculates initial zero sensitivity output valve:
R(x)=[?U(x)?-?U(x
0)?]/（cosθ*cosβ）
R（y）=[?U(y)?-?U(y
0)?]/（cosθ*sinβ）
R（z）=[?U(z)?-?U(z
0)?]/（sinθ）
Adjust parameter by the micro-control circuit that sample to be calibrated is built-in, zero partially final output valve and the final output valve of sensitivity are adjusted in the product specification, just finished the calibration of angular-rate sensor.The unit of angular velocity omega is
o/ second, zero inclined to one side unit is V, sensation unit is V/ °/second.
The gravity sensor calibration:
Utilize gravitational reacting force 32 as exciting signal source, motor 21 rotates 90
o, 180
o, 270
o, record rotate sample to be calibrated under forward and backward each position at x, y, three axial initial output valves of z, regulate final output valve by the built-in control circuit of sample to be calibrated again:
When initial position shown in Figure 3, sample to be calibrated sense from gravitational gravity pumping signal, be subject to 1 (1G=9.8 m/s of terrestrial gravitation unit
2) reacting force, take sample 29a to be calibrated as example, be respectively in three of x, y, the z pumping signal size on axially:
G（x）=?-G*sinθ*cosβ
G（y）=?-G*sinθ*sinβ
G（z）=?G*cosθ
Initial output valve is respectively V(x
0), V(y
0), V(z
0).
When motor 21 turns over 90 ° clockwise, arrive position shown in Figure 4, calibration circuit board 27a, 27b are parallel with terrestrial gravitation 32 at this moment, and sample 29a to be calibrated is respectively in x, y, three pumping signal sizes that axially are subject to of z:
G（x）=?-G*sinβ
G（y）=?-G*cosβ
G（z）=?0
Initial output valve is respectively V(x
90), V(y
90), V(z
90).
When motor 21 turns over 180 ° clockwise, arrive as shown in Figure 5 position, sample 29a to be calibrated is respectively in x, y, three pumping signal sizes that axially are subject to of z:
G（x）=?G*sinθ*cosβ
G（y）=?G*sinθ*sinβ
G（z）=?-G*cosθ
Initial output valve is respectively V(x
180), V(y
180), V(z
180).
When motor 21 turned over 270 ° clockwise, sample 29a to be calibrated was respectively in x, y, three pumping signal sizes that axially are subject to of z:
G（x）=?G*sinβ
G（y）=?G*cosβ
G（z）=?0
Initial output valve is respectively V(x
270), V(y
270), V(z
270).
According to recording of initial output valve when above-mentioned each position, the gravity sensor that calculates sample 29a to be calibrated three of x, y, z axial initial zero partially, unit is v:
V
0（x）=[V（x
270）+?V（x
90）]/2
V
0（y）=[V（y
270）+?V（y
90）]/2
V
0（z）=[V（z
270）+?V（z
90）]/2
The initial sensitivity of sample 29a to be calibrated is calculated as follows, and unit is v/g:
S(x)=?[V（x
270）-V（x
90）]/（2*sinβ）
S(y)=?[V（y
270）-V（y
90）]/（2*cosβ）
S(z)=?[V（z
180）-V（z
0）]/（2*cosθ）
Adjust parameter by the micro-control circuit that sample to be calibrated is built-in, zero partially final output valve and the final output valve of sensitivity are adjusted in the product specification, just finished the calibration of gravity sensor.
The geomagnetic sensor calibration:
Utilize the external magnetic field of a fixed-direction, size as exciting signal source, motor 21 rotates 90
o, 180
o, 270
o, record rotates the x of sample to be calibrated under forward and backward each position, y, and the initial output valve of three axles of z, regulate final output valve by the built-in control circuit of sample to be calibrated again:
When initial position shown in Figure 3, it is M that sample to be calibrated is sensed a size, and direction uniform magnetic field pumping signal 31 as shown in Figure 3 take sample 29a to be calibrated as example, is respectively in three of x, y, the z pumping signal size on axially:
M（x）=?-M*sinβ
M（y）=?M*cosβ
M（z）=?0
Initial output valve is respectively W(x
0), W(y
0), W(z
0).
When motor 21 turns over 90 ° clockwise, arrive position shown in Figure 4, calibration circuit board 27a, 27b are parallel with terrestrial gravitation 32 at this moment, and sample 29a to be calibrated is respectively in x, y, three pumping signal sizes that axially are subject to of z:
M（x）=?M*sinθ*cosβ
M（y）=?M*sinθ*sinβ
M（z）=?-G*cosθ
Initial output valve is respectively W(x
90), W(y
90), W(z
90).
When motor 21 turns over 180 ° clockwise, arrive as shown in Figure 5 position, sample 29a to be calibrated is respectively in x, y, three pumping signal sizes that axially are subject to of z:
M（x）=?M*sinβ
M（y）=?-M*cosβ
M（z）=?0
Initial output valve is respectively W(x
180), W(y
180), W(z
180).
When motor 21 turned over 270 ° clockwise, sample 29a to be calibrated was respectively in three of x, y, the z pumping signal size on axially:
M（x）=?-G*sinθ*cosβ
M（y）=?-G*sinθ*sinβ
M（z）=?G*cosθ
Initial output valve is respectively W(x
270), W(y
270), W(z
270).
According to recording of initial output valve when above-mentioned each position, the geomagnetic sensor that calculates sample 29a to be calibrated three of x, y, z axial initial zero partially, unit is v:
W
0（x）=[W（x
180）+?W（x
0）]/2
W
0（x）=[W（y
180）+?W（y
0）]/2
W
0（x）=[W（z
180）+?W（z
0）]/2
The initial sensitivity of sample 29a to be calibrated is calculated as follows, and unit is v/g:
S(x)=?[V（x
180）-V（x
0）]/（2*sinβ）
S(y)=?[V（y
0）-V（y
180）]/（2*cosβ）
S(z)=?[V（z
270）-V（z
90）]/（2*cosθ）
Adjust parameter by the micro-control circuit that sample to be calibrated is built-in, zero partially final output valve and the final output valve of sensitivity are adjusted in the product specification, just finished the calibration of geomagnetic sensor.
Claims (3)
1. the correcting device of the miniature motion sensor of multiaxis is characterized in that: comprise motor, transmission shaft, tripod and calibration circuit board;
Tripod is comprised of a vertical plane and two equilateral inclined-planes, and vertical plane is parallel with the terrestrial gravitation direction, and two equilateral inclined-planes and axial line are at angle;
Calibration circuit board has symmetrical structure and configuration, has wire to connect with the electrical signal tester device;
Motor is connected with transmission shaft, and transmission shaft is connected with the vertical plane of tripod, and the rotating force that motor produces is transferred on the tripod by transmission shaft, and calibration circuit board is fixed on two equilateral inclined-planes of tripod symmetrically.
2. the correcting device of the miniature motion sensor of multiaxis as claimed in claim 1, it is characterized in that: have flange, flange to be connected with an end of shaft coupling on the motor, the shaft coupling other end is connected with transmission shaft, and transmission shaft is fixed on the support by bearing.
3. the correcting device of the miniature motion sensor of multiaxis as claimed in claim 1, it is characterized in that: described tripod material is nonmagnetic substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320273535 CN203241436U (en) | 2013-05-17 | 2013-05-17 | Calibration apparatus for multi-axis micro motion sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320273535 CN203241436U (en) | 2013-05-17 | 2013-05-17 | Calibration apparatus for multi-axis micro motion sensor |
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| Publication Number | Publication Date |
|---|---|
| CN203241436U true CN203241436U (en) | 2013-10-16 |
Family
ID=49318719
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320273535 Withdrawn - After Issue CN203241436U (en) | 2013-05-17 | 2013-05-17 | Calibration apparatus for multi-axis micro motion sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245799A (en) * | 2013-05-17 | 2013-08-14 | 安徽北方芯动联科微***技术有限公司 | Correcting device and correcting method of multi-axis miniature motion sensor |
| CN105653017A (en) * | 2014-11-14 | 2016-06-08 | 纬创资通股份有限公司 | Electronic device and gravity sensing correction method for electronic device |
| CN106125160A (en) * | 2016-06-14 | 2016-11-16 | 重庆蓝岸通讯技术有限公司 | Automatically the system and method in gravity sensor direction is calibrated |
-
2013
- 2013-05-17 CN CN 201320273535 patent/CN203241436U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245799A (en) * | 2013-05-17 | 2013-08-14 | 安徽北方芯动联科微***技术有限公司 | Correcting device and correcting method of multi-axis miniature motion sensor |
| CN103245799B (en) * | 2013-05-17 | 2014-12-03 | 安徽北方芯动联科微***技术有限公司 | Correcting device and correcting method of multi-axis miniature motion sensor |
| CN105653017A (en) * | 2014-11-14 | 2016-06-08 | 纬创资通股份有限公司 | Electronic device and gravity sensing correction method for electronic device |
| TWI547788B (en) * | 2014-11-14 | 2016-09-01 | 緯創資通股份有限公司 | Electronic device and gravity sensing calibration method thereof |
| CN105653017B (en) * | 2014-11-14 | 2018-09-25 | 昆山纬绩资通有限公司 | The gravity sensing bearing calibration of electronic device and electronic device |
| CN106125160A (en) * | 2016-06-14 | 2016-11-16 | 重庆蓝岸通讯技术有限公司 | Automatically the system and method in gravity sensor direction is calibrated |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131016 Effective date of abandoning: 20141203 |
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