CN103575292A - Measurement apparatus and measurement method - Google Patents
Measurement apparatus and measurement method Download PDFInfo
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- CN103575292A CN103575292A CN201210250039.XA CN201210250039A CN103575292A CN 103575292 A CN103575292 A CN 103575292A CN 201210250039 A CN201210250039 A CN 201210250039A CN 103575292 A CN103575292 A CN 103575292A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C23/00—Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
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- Radar, Positioning & Navigation (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Measurement Of Optical Distance (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to a measurement apparatus, which comprises a processor, a shooting unit and a G-sensor unit, wherein the shooting unit shoots and acquires an image of at least a target, the G-sensor unit correspondingly generates a return value for identifying a component of the measurement apparatus in a coordinate axis Z-axis direction, and the processor calculates a distance between the measurement apparatus and the target by using a first formula and a second formula according to the return value and a pre-stored reference value. The present invention further provides a measurement method used for the measurement apparatus. According to the present invention, the image of at least a target is acquired through arrangement of the shooting unit so as to make the G-sensor unit correspondingly output the return value, and calculations on the target distance, the height and the average velocity are performed according to the return value and the pre-stored reference value, such that the technical problem that the measurement apparatus can not perform short and accurate measurement by using GPS in the prior art is solved.
Description
Technical field
The present invention relates to device and the measuring method of position, height and speed for measuring the target object that is positioned at a distance.
Background technology
Along with the development of mobile technology, portable mobile apparatus, as smart mobile phone, panel computer etc., except meeting basic function, also possesses increasing additional function.Wherein, GPS(Global Position System, GPS are all set in mobile device conventionally), for user's location and navigation, have distance and/or the height of the target of measuring a distance concurrently simultaneously, and user's translational speed etc.In the prior art, GPS carries out velocity survey by formula v=△ s/ △ t, and wherein, △ s is the user of measurement and the distance of target, and △ t moves to the target time used.Yet the precision of △ s is generally 10m, when measuring small distance, there is larger error, so cannot measure the average velocity in small distance.And GPS is merely able to measure sea level elevation conventionally, and can not be for target object being carried out to the measurement of height.Meanwhile, the response time required while utilizing GPS to carry out the position, height of target object and velocity survey is longer, thereby cannot obtain fast the data of required measurement.
Summary of the invention
In view of this, be necessary to provide a kind of measurement mechanism and measuring method, to solve mobile device of the prior art, utilize GPS cannot carry out compared with the measurement of the distance in short distance, average velocity and target location height.
The invention provides a kind of measurement mechanism, comprise processor, this measurement mechanism also comprises:
Image unit, takes and obtains the image that comprises at least one target when adjusting this measurement mechanism as user.And
G-sensor unit, for when this image unit obtains the image that comprises at least one target, produces a rreturn value z according to the flip angle of this measurement mechanism, and wherein, this rreturn value z is the component of this measurement mechanism in a coordinate axis Z-direction.
This processor altitude datum value that prestores, this processor utilizes the first formula and the second formula to calculate this measurement mechanism to the distance of this at least one target for the rreturn value z and this altitude datum value that produce according to this G-sensor unit.
The present invention also provides a kind of measuring method that is applied to a measurement mechanism, comprising:
The image of a target is taken and obtained to the attitude of adjusting this measurement mechanism in the very first time.
During according to the image of this target of obtaining, the flip angle of this measurement mechanism correspondingly produces a rreturn value, and wherein, this rreturn value is the component of this measurement mechanism in coordinate axis Z-direction.
According to this rreturn value and altitude datum value that prestores, and utilize the first formula and the second formula to calculate the distance between this measurement mechanism and this target.
With respect to prior art, measurement mechanism provided by the invention and measuring method, by the image unit that arranges in measurement mechanism to the focusing of the one or many of target object to obtain tested point, G-sensor unit focuses on according to image unit the tested point obtaining and exports accordingly a rreturn value, processor carries out the distance of target object according to the reference value prestoring in this rreturn value and measurement mechanism, the calculating of height and the moving average speed within a period of time, thereby having solved measurement mechanism in prior art utilizes GPS and cannot carry out shorter ground, the technical matters of accurately measuring.
Accompanying drawing explanation
Fig. 1 is the module diagram of the measurement mechanism in embodiment of the present invention.
Fig. 2 is the schematic diagram that the measurement mechanism in embodiment of the present invention carries out target distance measurement.
Fig. 3 is the schematic diagram that the measurement mechanism in embodiment of the present invention carries out velocity survey.
Fig. 4 is the schematic diagram that the measurement mechanism in embodiment of the present invention carries out the measurement of target object height.
Fig. 5 carries out the method flow diagram of target distance measurement in embodiment of the present invention.
Fig. 6 is the method flow diagram that embodiment of the present invention medium velocity is measured.
Fig. 7 carries out the method flow diagram of target object height measurement in embodiment of the present invention.
Main element symbol description
| Measurement mechanism | 10 |
| G- |
11 |
| |
12 |
| |
13 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Referring to Fig. 1, is the module diagram of the measurement mechanism in embodiment of the present invention, and this measurement mechanism 10 can be the portable mobile apparatus such as mobile phone, panel computer.This measurement mechanism 10 comprises G-sensor(Gravity-sensor, gravity sensor) unit 11, image unit 12 and processor 13.Wherein, this image unit 12 can comprise there is conductron, solid photoelectric sensor (Charge Coupled Device, CCD) or the camera of the photoelectric device such as complementary metal oxide semiconductor (CMOS) (Complementary Metal-Oxide-Semiconductor Transistor, CMOS).This image unit 12 is for photographic subjects, and can automatic focus captured target is to obtain picture rich in detail.These image unit 12 automatic focus principles are identical with automatic focus principle of the prior art, at this, do not add and repeat.G-sensor unit 11 for obtaining a rreturn value z when image unit 12 focuses on target, and wherein, this rreturn value z is the component of this measurement mechanism 10 in coordinate axis Z-direction.This processor 13 is for carrying out measurement mechanism 10 apart from the calculating of the height H of the distance L of target, user's average velocity v and/or target object according to the definite rreturn value z in G-sensor unit 11 and other correlation parameters.
Particularly, when image unit 12 carries out in the shooting process of target, reality is the process that the attitude of this measurement mechanism 10 is adjusted to horizontal direction by vertical direction, and its rreturn value z changes in the scope of 0-± 255.When image unit 12 focuses on a target, determine a focus point, while determining this tested point, this G-sensor unit 11 correspondingly obtains a rreturn value z according to the flip angle of measurement mechanism 10.
Refer to Fig. 2, particularly, when this measurement mechanism 10 carries out the measurement of distance L of target, user judges that by the altitude datum value h of the measurement mechanism 10 that prestores in measurement mechanism 10 whether the current residing true altitude value of measurement mechanism 10 is consistent with this reference value h, and when judging that the current residing true altitude value of measurement mechanism 10 and this reference value h are inconsistent, by user, by this measurement mechanism 10, reset.In the present embodiment, when this reference value h is used this measurement mechanism 10 for user, the distance of this measurement mechanism 10 and surface level.This processor 13 starts image unit 12 and carries out shooting and the focusing of target, and user is by the attitude adjustment of measurement mechanism 10 is obtained to a focus point, thus a definite tested point.While obtaining tested point when measurement mechanism 10 is adjusted to a certain attitude, this G-sensor unit 11 produces a rreturn value z according to the flip angle of measurement mechanism 10.This processor 13 obtains the definite rreturn value z in this G-sensor unit 11, and according to formula tan(θ)=sqrt((255^2-z^2)/z^2), and L=h * tan(θ) distance L of computation and measurement device 10 and target, wherein, θ is line between measurement mechanism 10 and target and the angle of vertical direction.
Refer to Fig. 3, when this measurement mechanism 10 averages the measurement of speed v, processor 13 starts image unit 12 and carries out shooting for the first time and the focusing of target, and this image unit 12 is in very first time t
1determine the first tested point, this processor 13 records this very first time t
1, the first tested point that G-sensor unit 11 is determined according to this correspondingly obtains the first rreturn value z
1.This processor 13 is according to formula tan(θ
1)=sqrt((255^2-z
1^2)/z
1^2) and L
1=h * tan(θ
1) calculate this measurement mechanism 10 at very first time point t
1and the first distance L between the first tested point
1.In like manner, this processor 13 is also according to formula tan(θ
2)=sqrt((255^2-z
2^2)/z
2^2) and L
2=h * tan(θ
2) calculate the distance s of this measurement mechanism 10 between the second time point t2 and the second tested point
2.Now, this processor 13 is according to formula v=(L
2-L
1)/(t
2-t
1) calculate at very first time point t
1to the second time t
2between point, the average velocity v that this measurement mechanism 10 moves.
Refer to Fig. 4, when this measurement mechanism 10 carries out the measurement of target object height H, this processor 13 starts image unit 12 and carries out shooting for the first time and the focusing of target object minimum point, thereby obtain the first tested point, the first tested point that G-sensor unit 11 is determined according to this correspondingly obtains the first rreturn value z
1'.Processor 13 is according to formula tan(θ
1')=sqrt((255^2-z
1' ^2)/z
1' ^2) and L '=h * tan(θ
1the distance L of this target object minimum point and this measurement mechanism 10 ') calculate '.Equally, 12 pairs of target object peaks of this image unit are taken for the second time and are focused on, thereby obtain the second tested point.Now, the second tested point that G-sensor unit 11 is determined according to this obtains the second rreturn value z
2'.Processor 13 is according to formula tan(θ
2')=sqrt((255^2-z
2' ^2)/z
2' ^2) and H=h+L '/tan(θ
2'-90 °) calculate the distance H between the first tested point and the second tested point, the i.e. height of target object.
Refer to Fig. 5, for the present invention carries out the method flow diagram of target distance measurement, the method comprises:
Step S50, user judges that by the altitude datum value h of the measurement mechanism 10 that prestores in measurement mechanism 10 whether the current residing true altitude value of measurement mechanism 10 is consistent with this reference value h, if so, enters step S51, otherwise, enter step S54.
In the present embodiment, when this reference value h is used this measurement mechanism 10 for user, the distance of this measurement mechanism 10 and surface level.
Step S51, this processor 13 starts image unit 12 and carries out shooting and the focusing of target, and user is by the attitude adjustment of measurement mechanism 10 is obtained to a focus point, thus a definite tested point.
Step S52, this G-sensor unit 11 produces rreturn value z according to the flip angle of measurement mechanism 10.
When image unit 12 carries out in the shooting process of target, reality is the process that the attitude of this measurement mechanism 10 is adjusted to horizontal direction by vertical direction, and its rreturn value z changes in the scope of 0-± 255.When image unit 12 focuses on a target, determine a focus point, while determining this tested point, this G-sensor unit 11 correspondingly obtains a rreturn value z according to the flip angle of measurement mechanism 10.
Step S53, this processor 13 is according to the distance L of the definite rreturn value z in this G-sensor unit 11 and the first formula and the second formula calculation and measurement device 10 and target.
In the present embodiment, this first formula is tan(θ)=sqrt((255^2-z^2)/z^2), this second formula is L=h * tan(θ).
Step S54, user resets this reference value h by this measurement mechanism 10, then, returns to step S50.
Referring to Fig. 6, is the method flow diagram that the present invention carries out velocity survey, and the method comprises:
Step S60, user judges that by the altitude datum value h of the measurement mechanism 10 that prestores in measurement mechanism 10 whether the current residing true altitude value of measurement mechanism 10 is consistent with this reference value h, if so, enters step S601, otherwise, enter step S68.
In the present embodiment, when this reference value h is used this measurement mechanism 10 for user, the distance of this measurement mechanism 10 and surface level.
Step S61, this processor 13 starts image unit 12 and carries out shooting for the first time and the focusing of target, and user is by making this image unit 12 in very first time t to the attitude adjustment of measurement mechanism 10
1determine the first tested point, this processor 13 records this very first time t
1.
Step S62, this G-sensor unit 11 produces the first rreturn value z according to the flip angle of measurement mechanism 10
1.
Step S63, the first rreturn value z that this processor 13 obtains according to this G-sensor unit 11
1and first formula and the second formula calculate at very first time t
1the distance L of this measurement mechanism 10 and target
1.
In the present embodiment, this first formula is tan(θ
1)=sqrt((255^2-z
1^2)/z
1^2), this second formula is L
1=h * tan(θ
1).
Step S64, user adjusts again to the attitude of measurement mechanism 10, makes this image unit 12 at the second time t
2obtain the second tested point, this processor 13 records this second time t
2.
Step S65, this G-sensor unit 11 produces the second rreturn value z according to the flip angle of measurement mechanism 10
2.
Step S66, the second rreturn value z that this processor 13 is determined according to this G-sensor unit 11
2and first formula and the second formula calculate at the second time t
2the distance L of this measurement mechanism 10 and target
2.
Step S67, this processor 13 is according to recording very first time t
1, the second time t
2, the first distance L of calculating
1with second distance L
2, and the 3rd formula calculates at very first time t
1to the second time t
2process in, the average velocity v that this measurement mechanism 10 moves.
In the present embodiment, the 3rd formula is v=(L
2-L
1)/(t
2-t
1).
Step S68, user resets this reference value h by this measurement mechanism 10, then, returns to step S60.
Referring to Fig. 7, is the method flow diagram that the present invention carries out the measurement of target object height, and the method comprises:
Step S70, user judges that by the altitude datum value h of the measurement mechanism 10 that prestores in measurement mechanism 10 whether the current residing true altitude value of measurement mechanism 10 is consistent with this reference value h, if so, enters step S71, otherwise, enter step S77.
In the present embodiment, when this reference value h is used this measurement mechanism 10 for user, the distance of this measurement mechanism 10 and surface level.
Step S71, this processor 13 starts image unit 12, and user, by the attitude of measurement mechanism 10 is adjusted, makes 12 pairs of target object minimum points of image unit take and focus on, and obtains the first tested point.
Step S72, this G-sensor unit 11 produces the first rreturn value z according to the flip angle of measurement mechanism 10
1'.
Step S73, the first rreturn value z that this processor 13 obtains according to this G-sensor unit 11
1' and the first formula and the second formula calculate at very first time t
1the distance L of this measurement mechanism 10 and target
1.
Step S74, user adjusts again to the attitude of measurement mechanism 10, and 12 pairs of target object peaks of this image unit are taken and are focused on, and obtain the second tested point.
Step S75, this G-sensor unit 11 produces the second rreturn value z according to the flip angle of measurement mechanism 10
2'.
Step S76, the second rreturn value z that this processor 13 is determined according to this G-sensor unit 11
2', reference value h, and the first formula and the 3rd formula calculate the height H of this target object.
In the present embodiment, the 3rd formula is H=h+s '/tan(θ
2'-90 °).
Step S77, user resets this reference value h by this measurement mechanism 10, then, returns to step S70.
Use above-mentioned measurement mechanism and measuring method, by the image unit that arranges in measurement mechanism to the focusing of the one or many of target object to obtain tested point, G-sensor unit focuses on according to image unit the tested point obtaining and exports accordingly a rreturn value, processor carries out the calculating of distance, height and the moving average speed within a period of time of target object according to the reference value prestoring in this rreturn value and measurement mechanism, thereby solved that measurement mechanism in prior art utilizes GPS and the technical matters that cannot carry out shorter ground, accurately measure.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change and distortion all should belong to the protection domain of the claims in the present invention.
Claims (15)
1. a measurement mechanism, comprises processor, it is characterized in that, described measurement mechanism also comprises:
Image unit, for taking and obtain the image that comprises at least one target when user adjusts described measurement mechanism; And
G-sensor unit, for when described image unit obtains the image that comprises at least one target, according to the flip angle of described measurement mechanism, produce at least one rreturn value z, wherein, described rreturn value z is the component of described measurement mechanism in a coordinate axis Z-direction;
The described processor altitude datum value that prestores, described processor utilizes one first formula and one second formula to calculate described measurement mechanism to the distance of described at least one target for the rreturn value z and the described altitude datum value that produce according to described G-sensor unit.
2. measurement mechanism as claimed in claim 1, it is characterized in that, described the first formula is tan(θ)=sqrt((255^2-z^2)/z^2), described the second formula is L=h * tan(θ), wherein, θ is line between described measurement mechanism and described target and the angle of vertical direction, and h is the altitude datum value that described processor prestores, and L is that described measurement mechanism is to the distance of described target.
3. measurement mechanism as claimed in claim 2, it is characterized in that, the quantity of described at least one target is two, the image of the second target that comprises the image of the first object that described image unit obtained in the very first time and obtain in the second time, described G-sensor unit corresponding the first rreturn value and second rreturn value of producing respectively when described image unit obtains the image of first object and the image of the second target.
4. measurement mechanism as claimed in claim 3, it is characterized in that, described processor is also for storing the described very first time and the second time, and utilize described the first formula and the second formula to calculate described measurement mechanism to the first distance of described first object according to described the first rreturn value and described reference value, also according to described the second rreturn value and described reference value, utilize described the first formula and the second formula to calculate described measurement mechanism to the second distance of described the second target, and according to the described very first time, the second time, the first distance and second distance utilize the 3rd formula to calculate the average velocity of described measurement mechanism in the process of the described time very first time to the second.
5. measurement mechanism as claimed in claim 4, is characterized in that, described the 3rd formula is v=(L
2-L
1)/(t
2-t
1), wherein, t
1for the very first time, t
2be the second time, L
1be the first distance, L
2for second distance, v is average velocity.
6. measurement mechanism as claimed in claim 3, it is characterized in that, described processor utilizes described the first formula and the second formula to calculate described measurement mechanism to the distance of described first object according to described the first rreturn value and described altitude datum value, also according to described measurement mechanism, to distance, the second rreturn value and the described reference value of described first object, utilizes described the first formula and one the 4th formula to calculate the distance between described first object and described the second target.
7. measurement mechanism as claimed in claim 6, it is characterized in that, described the 4th formula is H=h+L/tan(θ '-90 °), wherein, described measurement mechanism and the line between described target and the angle of vertical direction that θ ' calculates according to described the second rreturn value and the first formula for described processor, H is the distance between described first object and described the second target.
8. measurement mechanism as claimed in claim 6, it is characterized in that, the image of described first object is the minimum point image of a target object, the image of described the second target is the peak image of described target object, the height that the distance between described first object and described the second target is described target object.
9. a measuring method, described measuring method is applied to a measurement mechanism, it is characterized in that, and described measuring method comprises:
The image of a target is taken and obtained to the attitude of adjusting described measurement mechanism in the very first time;
Described in during according to the image of the described target of obtaining, the flip angle of measurement mechanism correspondingly produces a rreturn value, and wherein, described rreturn value is the component of described measurement mechanism in coordinate axis Z-direction;
According to described rreturn value and the altitude datum value that prestores, and utilize the first formula and the second formula to calculate the distance between described measurement mechanism and described target.
10. the measuring method that is applied to a measurement mechanism as claimed in claim 9, it is characterized in that, described the first formula is tan(θ)=sqrt((255^2-z^2)/z^2), described the second formula is L=h * tan(θ), wherein, the rreturn value that z is described generation, θ is line between described measurement mechanism and described target and the angle of vertical direction, h is the altitude datum value that described measurement mechanism prestores, and L is that described measurement mechanism is to the distance of described target.
11. measuring methods that are applied to a measurement mechanism as claimed in claim 10, is characterized in that, also comprise:
In the attitude of the second time adjustment measurement mechanism, take and obtain the image of another target;
Described in during according to the image of described another target of obtaining, the flip angle of measurement mechanism correspondingly produces another rreturn value;
According to described another rreturn value and described altitude datum value, and utilize the first formula and the second formula to calculate another distance between described measurement mechanism and described another target; And
According to the described very first time, the second time and the described distance calculating and described another distance, utilize the 3rd formula to calculate the average velocity of described measurement mechanism in the process of the described time very first time to the second.
12. measuring methods that are applied to a measurement mechanism as claimed in claim 11, is characterized in that, described the 3rd formula is v=(L
2-L
1)/(t
2-t
1), wherein, t
1for the very first time, t
2be the second time, L
1for the described distance calculating, L
2for described another distance calculating, v is average velocity.
13. measuring methods that are applied to a measurement mechanism as claimed in claim 10, is characterized in that, also comprise:
In the second time, adjust the attitude of described measurement mechanism to take and to obtain the image of another target;
Described in during according to the image of described another target of obtaining, the angle of measurement mechanism upset correspondingly produces another rreturn value;
According to described another rreturn value, described altitude datum value, the described distance that calculates, and utilize the first formula and the 4th formula to calculate the distance between described target and described another target.
14. measuring methods that are applied to a measurement mechanism as claimed in claim 13, it is characterized in that, described the 4th formula is H=h+L/tan(θ '-90 °), wherein, described measurement mechanism and line described target between and the angle of vertical direction of θ ' for calculating according to described another rreturn value and the first formula, H is the distance between described target and described another target.
15. measuring methods that are applied to a measurement mechanism as claimed in claim 14, it is characterized in that, the image of described target is the minimum point image of a target object, the image of described another target is the peak image of described target object, the height that the distance between described target and described another target is described target object.
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| CN103575292B (en) | 2016-07-06 |
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Effective date of registration: 20180224 Address after: Shanghai City, Songjiang Export Processing Zone South Road No. 1925 Patentee after: Ambit Microsystems (Shanghai) Co., Ltd. Address before: 201613 Shanghai City, Songjiang District Songjiang Export Processing Zone South Road No. 1925 Co-patentee before: Hon Hai Precision Industry Co., Ltd. Patentee before: Ambit Microsystems (Shanghai) Co., Ltd. |