CN105865417A - Height measuring method, height measuring instrument and wearable device - Google Patents
Height measuring method, height measuring instrument and wearable device Download PDFInfo
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- CN105865417A CN105865417A CN201510025449.8A CN201510025449A CN105865417A CN 105865417 A CN105865417 A CN 105865417A CN 201510025449 A CN201510025449 A CN 201510025449A CN 105865417 A CN105865417 A CN 105865417A
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Abstract
The invention discloses a height measuring method. The method comprises the following steps: initializing the real-time height of an object at an initial time; performing real-time sampling on the air pressure value of the environment for the object with a special time interval , obtaining a real-time first relative height according to the air pressure difference value of the sample in the special time interval and the current sample, obtaining the first real-time height according to the last real-time height sampled with the specific time interval of object and the first relative height; obtaining a real-time second relative height according to the air pressure value sampled with integer-time time interval and air pressure difference value of the current sample, and obtaining the second real-time height, and using the second real-time height for replacing the first real-time height. The invention also provides a height measuring instrument and a wearable device. The height measuring method can conveniently and accurately measure the real-time height.
Description
Technical field
The present invention relates to height measurement technique field, particularly relate to a kind of height measurement method, elevation carrection
Instrument and wearable device.
Background technology
In daily life and production process, height is indispensable basic parameter for us, example
As, relative altitude is lived at us, building, and science and technology even suffers from military affairs being widely applied, such as open country
Outer exploration, construction site elevation carrection, unmanned robot and target missile height navigation etc..Generally, for
The measurement of relative altitude generally has three kinds of conventional methods, the first: traditional mechanically direct measurement；Second
Kind: utilize the measurement of GPS；The third: measurement indirectly based on pneumatically-sensed electronic machine.Traditional
The limited precision of mechanical measurement device, volume is big, carries inconvenience.The measurement of GPS can reach preferable essence
Degree requirement, but relatively costly.Comparatively speaking, electronic machine based on pneumatically-sensed relative altitude has
Wider application.
In the prior art, for utilizing barometer calculated altitude, people's commonly used standard pressure altitude formula.
But standard pressure altitude conversion formula exists bigger defective, such as, at sustained height, air pressure can be with
The change of ambient temperature and change, corresponding height differs, therefore straight according to standard pressure altitude formula
Connect the height calculated and have error.In order to compensate this error, need to collect network data in real time and carry out,
Make measurement process the most loaded down with trivial details.
Summary of the invention
It is an object of the invention to, it is provided that a kind of height measurement method, height-gauge and wearable device,
Real-time height can be measured easily and accurately.
For solving above-mentioned technical problem, the present invention provides a kind of height measurement method, including:
Initialize the object real-time height at initial time；
Atmospheric pressure value with object local environment described in a specified time interval real-time sampling；
According to front once with the sampling of described specified time interval and the air pressure difference between time sampling, obtain one
The first real-time relative altitude, and according to before described object once with described specified time interval sample real-time
Height and described first relative altitude, obtain first the most highly；
Air pressure with object local environment described in the integral multiple time interval real-time sampling of described specified time interval
It is worth, and once with the atmospheric pressure value of described integral multiple time interval sampling and when the secondary air pressure difference sampled before utilization,
Obtain a second real-time relative altitude, and according to described object front once with described integral multiple time interval
In real time height and described second relative altitude of sampling, obtains the second height in real time, utilizes described second real-time
Highly replace first the most highly.
Further, in described height measurement method,
Air pressure with object local environment described in the integral multiple time interval real-time sampling of described specified time interval
Value step is:
After described specified time interval n-th is sampled, according to when time air pressure and the initial gas pressure of sampling it
Difference, obtains a second real-time relative altitude, and according to the height in real time of described object initial time and current
The second relative altitude, obtain real-time second in real time height, utilize current described second highly to replace in real time
Change the first real-time height that the sampling of described n-th obtains；
After described n+m sampling, according to working as time air pressure of sampling and the draught head of n-th sampling, obtain
To a second real-time relative altitude, and the height in real time obtained of sampling according to described object n-th is with current
The second relative altitude, obtain real-time second in real time height, utilize current described second highly to replace in real time
Change the first real-time height that described n+m sampling obtains；
Circulation performs this step；
Wherein, n, m are the natural number more than or equal to 2.
Further, in described height measurement method, the height in real time of described initial time is non-exact value,
Described height measurement method also includes: the relatively described first real-time height and the real-time height of described initial time,
When the height in real time that described first is the most highly less than described initial time, the real-time height of described initial time
Degree covers described first the most highly.
Further, in described height measurement method, described height measurement method also includes: according to described
The difference of the height in real time of initial time and described first height in real time, it is thus achieved that the floor number of plies of described current time.
Further, in described height measurement method, described first relative altitude and the second relative altitude root
Obtaining according to a difference in height computing formula, described difference in height computing formula is: Δ H=(P1-P2)/k, wherein,
Δ H is described first relative altitude or the second relative altitude, the atmospheric pressure value that P1 once samples before being, P2 is for working as
The atmospheric pressure value of secondary sampling, k is that variable, k Yu P2 or P1 have a corresponding relation, according to the value of P2 or P1
Determine the value of k.
Further, in described height measurement method, described relative altitude is according to a difference in height computing formula
Obtaining, described difference in height computing formula is: Δ H=(P1-P2)/k, and wherein, Δ H is described relative altitude,
P1 is the atmospheric pressure value of described previous moment, and P2 is the atmospheric pressure value of described current time, and k is variable, k and P2
Or P1 has a corresponding relation, determine the value of k according to the value of P2 or P1.
According to the another side of the present invention, also provide for a kind of height-gauge, including:
Real-time sampling unit, with the atmospheric pressure value of object local environment described in a specified time interval real-time sampling；
Interval sampling unit, with object described in the integral multiple time interval real-time sampling of described specified time interval
The atmospheric pressure value of local environment；
Memorizer, for storing described object height in real time and first height in real time at initial time；
Height calculation unit, described high computational module according to front once with described specified time interval sampling with
Air pressure difference between secondary sampling, obtains a first real-time relative altitude, and previous according to described object
Secondary height and described first relative altitude in real time sampled with described specified time interval, obtains one the most highly；
Meanwhile, described high computational module utilize before once with described integral multiple time interval sampling atmospheric pressure value with work as
The air pressure difference of secondary sampling, obtains a second real-time relative altitude, and according to described object front once with
Height and described second relative altitude in real time of described integral multiple time interval sampling, obtains the second real-time height,
Utilize the described second height replacement in real time first height in real time.
Further, in described height-gauge, described interval sampling unit is from described real-time sampling unit
Obtain atmospheric pressure value.
Further, in described height-gauge, the height in real time of described initial time is non-exact value,
Described height-gauge also includes a height comparing unit, and described height comparing unit is more described first real-time
Height and the real-time height of described initial time, when the described first real-time height is less than the reality of described initial time
During Shi Gaodu, the real-time of described initial time highly covers described first the most highly.
Further, in described height-gauge, described height-gauge also includes that Stall number layer by layer calculates
Unit, described floor number of plies computing unit is according to height in real time and described first height in real time of described initial time
The difference of degree, it is thus achieved that the floor number of plies of described current time.
Further, in described height-gauge, described height calculation unit calculates public affairs according to a difference in height
Formula calculates relative altitude, and described difference in height computing formula is: Δ H=(P1-P2)/k, and wherein, Δ H is described
Relative altitude, P1 is the atmospheric pressure value of described previous moment, and P2 is the atmospheric pressure value of described current time, and k is for becoming
Amount, k Yu P2 or P1 has a corresponding relation, determines the value of k according to the value of P2 or P1.
Additionally, the present invention also provides for a kind of wearable device, including the elevation carrection described in as above any one
Instrument.
Compared with prior art, the present invention provides height measurement method, height-gauge and wearable set
Get everything ready and have the advantage that
1. in height measurement method, height-gauge and wearable device, according to front once with described specific
Time interval sampling and the air pressure difference between time sampling, obtain a first real-time relative altitude, and root
According to the height in real time once sampled with described specified time interval before described object and described first relative altitude,
Obtain the first real-time height (the most real-time height above sea level), thus obtain relative altitude according to measuring draught head,
To obtain real-time height above sea level, measuring method is simple；At height measurement method, height-gauge and can
In wearable device, because the measurement of air pressure all has error each time so that the relative altitude measured all has every time
There is certain error, and the described first the most highly desirable relative altitude to each moment is overlapped, and each
Superposition all can accumulate once error, in order to avoid adding up, with the integral multiple of described specified time interval of error
Time before the atmospheric pressure value of object local environment described in time interval real-time sampling, and utilization once with described integral multiple
Between interval sampling atmospheric pressure value with when time sampling air pressure difference, obtain a second real-time relative altitude, and
According to described object front once second relative with described with the in real time height of described integral multiple time interval sampling
Highly, obtain the second real-time height, utilize described second in real time height replace the first height in real time, described the
Two errors the most highly less than described first the most highly, thus decrease the air pressure recorded in sampling process
It is worth the cumulative of self error, i.e. meets the needs that can obtain height in real time, ensure again the standard of elevation carrection
Exactness.
2., in height measurement method, height-gauge and wearable device, relatively described first the most highly
With the real-time height of described initial time, when the described first real-time high less than described initial time of height in real time
When spending, the real-time of described initial time highly covers the described first real-time height, when the reality of described initial time
When the data of Shi Gaodu are inaccurate, the real-time height of described initial time can be corrected in time, protect further
The accuracy that card is measured.
Accompanying drawing explanation
Fig. 1 is the flow chart of first embodiment of the invention camber measuring method；
Fig. 2 is the schematic diagram of second embodiment of the invention camber measuring instrument；
Fig. 3 is the schematic diagram of third embodiment of the invention camber measuring instrument.
Detailed description of the invention
Below in conjunction with schematic diagram height measurement method, height-gauge and wearable device to the present invention
It is described in more detail, which show the preferred embodiments of the present invention, it should be appreciated that people in the art
Member can revise invention described herein, and still realizes the advantageous effects of the present invention.Therefore, following retouch
State be appreciated that for those skilled in the art widely known, and be not intended as limitation of the present invention.
In order to clear, whole features of practical embodiments are not described.In the following description, it is not described in detail public affairs
The function known and structure, because they can make to due to the fact that unnecessary details and chaotic.Will be understood that
In the exploitation of any practical embodiments, it is necessary to make a large amount of implementation detail to realize the specific objective of developer,
Such as according to about system or about the restriction of business, an embodiment change into another embodiment.Separately
Outward, it should think that this development is probably complicated and time-consuming, but for people in the art
It it is only routine work for Yuan.
Referring to the drawings the present invention the most more particularly described below in the following passage.According to following explanation and
Claims, advantages and features of the invention will be apparent from.It should be noted that, accompanying drawing all uses the simplest
The form changed and all use non-ratio accurately, only in order to convenient, aid in illustrating the embodiment of the present invention lucidly
Purpose.
The core concept of the present invention is, it is provided that a kind of height measurement method, as it is shown in figure 1, include as follows
Step:
Step S11, initializes the object real-time height at initial time；
Step S12, with the atmospheric pressure value of object local environment described in a specified time interval real-time sampling；
Step S13, according to front once with the sampling of described specified time interval and the draught head between time sampling
Value, obtains a first real-time relative altitude, and according to before described object once with described specified time interval
Height and described first relative altitude in real time of sampling, obtains first the most highly；
Step S14, with ring residing for object described in the integral multiple time interval real-time sampling of described specified time interval
The atmospheric pressure value in border, and utilize before once with described integral multiple time interval sampling atmospheric pressure value with when time sampling
Air pressure difference, obtains a second real-time relative altitude, and according to described object front once with described integer
Height and described second relative altitude in real time of times time interval sampling, obtains the second height in real time, utilizes institute
State second and highly replace described first in real time the most highly.
In step s 13, obtain the first relative altitude according to measuring draught head, obtain described first the highest
Degree (the most real-time height above sea level), measuring method is simple；In step S14, utilize the described second real-time height
Degree replaces the described first real-time height, thus decreases the cumulative of barometric surveying self error in sampling process,
I.e. meet the needs that can obtain height in real time, ensure again the accuracy of elevation carrection.
According to the core concept of the present invention, also provide for a kind of height-gauge and wearable device.
It is exemplified below several embodiments of the present invention, to understand explanation present disclosure, it is understood that,
Present disclosure is not restricted to following example, and other are by the conventional skill of those of ordinary skill in the art
The improvement of art means is also within the thought range of the present invention.
First embodiment
The height measurement method of the present invention is illustrated below in conjunction with Fig. 1.
First, carry out step S11, as it is shown in figure 1, initialize the object real-time height at initial time.
Described in the present embodiment, the in real time height of described initial time is the standard sea in a city (or an area)
Pulling out, this standard height above sea level can be obtained by networking location, or, this standard height above sea level can manually be keyed in
Obtain etc. mode；Additionally, described initial time can also be highly a fixed value stored in real time.
Then, step S12 is carried out, with the air pressure of object local environment described in a specified time interval real-time sampling
Value.Wherein, described characteristic frequency can be 5 seconds once, 10 seconds once or 30 seconds once etc., described spy
Determine frequency and be not limited to above-mentioned scope, can the time shorter or longer, such as, in the present embodiment, every
Within 15 seconds, the atmospheric pressure value to described object local environment is sampled, and carries out sampling for the first time, detects initial
The atmospheric pressure value of moment t0 is p0；Carrying out second time to sample, the atmospheric pressure value at the first moment t1 is p1；Carry out
Third time sampling, the atmospheric pressure value at the second moment t2 is p2；Carry out the 4th sampling, at the 3rd moment t3
Atmospheric pressure value be p3, etc..
Afterwards, carry out step S13, as it is shown in figure 1, according to front once with described specified time interval sampling with
Air pressure difference between secondary sampling, obtains a first real-time relative altitude, and previous according to described object
The secondary height in real time sampled with described specified time interval and described first relative altitude, obtain first the highest
Degree.In the present embodiment, the atmospheric pressure value of initial time t0 is p0, and the atmospheric pressure value at the first moment t1 is p1,
Atmospheric pressure value at the second moment t2 is p2, and the atmospheric pressure value at the 3rd moment t3 is p, and the first moment t1 is with initial
Air pressure difference p0-p1 of moment t0, the second moment t2 and air pressure difference p1-p2 of the first moment t1, the 3rd
Moment t3 and air pressure difference p2-p3 of the second moment t2.
It is also preferred that the left calculate relative altitude according to a difference in height computing formula, described difference in height computing formula is:
Δ H=(P1-P2)/k, wherein, Δ H is relative altitude, and P1 is for the front atmospheric pressure value once sampled, and P2 is
When the atmospheric pressure value of secondary sampling, k is that variable, k Yu P2 or P1 have a corresponding relation, can according to P2 or
The value of P1 determines the value of k.Wherein, described memorizer 150 can store atmospheric pressure value pass corresponding with k value
System, to facilitate the value according to P2 or P1 to obtain the value of k.Concrete, in the present embodiment, described in real time
Relative altitude be:
First relative altitude Δ h1=(the p0-p1)/k of the first moment t1 and initial time t0；
First relative altitude Δ h2=(the p1-p2)/k of the second moment t2 and the first moment t1；
First relative altitude Δ h3=(the p2-p3)/k of the 3rd moment t3 and the second moment t2.
By the real-time h0 that is highly designated as of described initial time, the most described first is the most highly:
The first of first moment t1 height h1=h0+ Δ h1 in real time；
The first of second moment t2 height h2=h1+ Δ h2 in real time；
The first of 3rd moment t3 height h3=h2+ Δ h3 in real time.
In step s 13, obtain the first relative altitude according to measuring draught head, obtain described first the highest
Degree (the most real-time height above sea level), measuring method is simple.
But, the process of atmospheric pressure value of sampling each time all has error so that the relative altitude every time measured all has
There is certain error so that each relative altitude calculated all has error delta, and described first is the highest
Degree needs to be overlapped the relative altitude in each moment, such as, and the first of the 3rd moment t3 height in real time
H3=h2+ Δ h3=h0+ Δ h1+ Δ h2+ Δ h3, all there is error delta in described relative altitude Δ h1, Δ h2, Δ h3, and
Superposition all can accumulate once error every time so that the error in the first of the 3rd moment t3 height h3 in real time is 3
δ, the application condition of the first of the 3rd moment t3 height h3 in real time is big.
It is also preferred that the left cumulative in order to avoid error, as it is shown in figure 1, carry out step S14, with described specific time
Between interval integral multiple time interval real-time sampling described in the atmospheric pressure value of object local environment.In the present embodiment,
After described specified time interval n-th is sampled, the atmospheric pressure value of described object local environment of sampling, wherein,
N can be 2,3,4,5 or bigger with value, such as, after described specified time interval the 4th is sampled,
Atmospheric pressure value in the 3rd moment t3 sampling is p3.
Then, once with atmospheric pressure value and the air pressure working as secondary sampling of the sampling of described integral multiple time interval before utilization
Difference, obtains a second real-time relative altitude, and concrete, described second relative altitude is:
3rd moment t3 (sampling of described specified time interval n-th) and initial time t0 (described specific time
Between be spaced the 1st time sampling) the second relative altitude Δ h3 '=(p0-p3)/k.
And according to the in real time height of described object initial time and the second current relative altitude, obtain real-time
Second the most highly, concrete, and described the second real-time real-time height is:
The second of 3rd moment t3 height h3 '=h0+ Δ h3 ' in real time.
The second of 3rd moment t3 height h3 ' in real time only have an error, the i.e. error delta of Δ h3 ', institute
With, the error of the h3 of height in real time than the 3rd moment t3 is little.Then the described second the most highly h3 ' is covered institute
State the first real-time height h3, thus being used in combination by real-time sampling and interval sampling, both can ensure that can
To obtain the height of current time in real time, can avoid again introducing too much error.
Circulation performs step S14, after described n+m sampling, obtains the gas in described n+m sampling
Pressure value, according to the draught head of air pressure and the n-th sampling when time sampling, obtains one real-time second relatively high
Degree, and the height in real time and the second current relative altitude obtained of sampling according to described object n-th, obtain
Real-time second height in real time, utilizes current described second highly to replace described n+m sampling in real time and obtains
Real-time height.Wherein, n can be 2,3,4,5 or bigger with value, and circulates this step of execution.
When in real time height is fixed value of described initial time, or described standard height above sea level can manually key
The mode such as enter when obtaining, described initial time the most highly can the height above sea level at place actual with described object
Spending inconsistent, now, the height in real time of described initial time is non-exact value (the real-time height of initial time
Inconsistent with actual height above sea level) time, the most inaccurate in order to avoid described initial time is caused
Error, it is also preferred that the left in the present embodiment, carry out step S15, the relatively described first height and described in real time
The height h0 in real time of initial time, when the height in real time that described first is the most highly less than described initial time,
The most described relative altitude is negative value, and the h0 of height in real time of described initial time covers described first the most highly.
Such as, in another embodiment of the invention, if at initial time t0, described object is positioned at one 10 meters
Upstairs, when initializing the h0 of height in real time of described initial time in step s 11, automatically updated by network
The h0 of height in real time for described initial time is 100 meters (hypo height of standard), when the first moment t1 makes
Downstairs, described object is positioned at the hypo height of standard to user, and the h1 of height in real time of the first moment t1 of calculating is
90 meters, then show is highly updated to 100 meters in real time.
It is also preferred that the left in the present embodiment, as it is shown in figure 1, carry out step S16, according to described initial time
The difference of height and described first height in real time in real time, it is thus achieved that the floor number of plies of described current time.Such as, institute
The height in real time stating initial time is 60 meters, and described first is the most highly 70 meters, if arranging floor
Being highly 2.5 meters, the number of plies of the most described floor is (the described first the most highly 70 meters-described initial time
In real time height 60 meters) height 2.5 meters=4 layers of/floor.
Second embodiment
The height-gauge of the present invention is illustrated below in conjunction with Fig. 2.As in figure 2 it is shown, described elevation carrection
Instrument 1 includes the real-time sampling list of the atmospheric pressure value with object local environment described in a specified time interval real-time sampling
Unit 121, with the gas of object local environment described in the integral multiple time interval real-time sampling of described specified time interval
The interval sampling unit 122 of pressure value, high computational module 131 and memorizer 150, wherein, described storage
Device 150 for storage one object at the height in real time of initial time, the first height in real time.
Highly being stored in described memorizer 150 in real time of described initial time, described in the present embodiment,
The height in real time of described initial time is the standard height above sea level in a city (or an area), and this standard height above sea level is permissible
Obtained by networking location, or, this standard height above sea level can obtain in modes such as manually key entries；Additionally,
Described initial time can also be highly a fixed value being stored in described memorizer 150 in real time.
Described real-time sampling unit 121 is with the gas of object local environment described in a specified time interval real-time sampling
Pressure value.Wherein, described characteristic frequency can be 5 seconds once, 10 seconds once or 30 seconds once etc., described
Characteristic frequency is not limited to above-mentioned scope, can the time shorter or longer, such as, in the present embodiment, institute
State real-time sampling unit 121 to sample every 15 seconds atmospheric pressure values to described object local environment, described reality
Time sampling unit 121 carry out sampling for the first time, detecting the atmospheric pressure value at initial time t0 is p0；Described reality
Time sampling unit 121 carry out second time sample, the atmospheric pressure value at the first moment t1 is p1；Described real-time sampling
Unit 121 carries out third time and samples, and the atmospheric pressure value at the second moment t2 is p2；Described real-time sampling unit 121
Carrying out the 4th sampling, the atmospheric pressure value at the 3rd moment t3 is p3, etc..
In the present embodiment, described high computational module 131 connects described real-time sampling unit 121, to obtain
The atmospheric pressure value of real-time sampling: the atmospheric pressure value of initial time t0 is p0, the atmospheric pressure value at the first moment t1 is p1,
Atmospheric pressure value at the second moment t2 is p2, and the atmospheric pressure value at the 3rd moment t3 is p3.Described high computational mould
The air pressure difference that block 131 is once sampled with described specified time interval and worked as between time sampling before calculating: first
Air pressure difference p0-p1 of moment t1 and initial time t0, the second moment t2 and the air pressure difference of the first moment t1
P1-p2, the 3rd moment t3 and air pressure difference p2-p3 of the second moment t2.
Described height calculation unit 131 calculates relative altitude, described difference in height according to a difference in height computing formula
Computing formula is: Δ H=(P1-P2)/k, wherein, Δ H is relative altitude, and P1 once samples for front
Atmospheric pressure value, P2 is that k is that variable, k Yu P2 or P1 have a corresponding relation, can when time atmospheric pressure value of sampling
The value of k is determined with the value according to P2 or P1.Wherein, described memorizer 150 can store atmospheric pressure value
With k value corresponding relation, to facilitate value according to P2 or P1 to obtain the value of k.Concrete, at the present embodiment
In, described real-time relative altitude is:
First relative altitude Δ h1=(the p0-p1)/k of the first moment t1 and initial time t0；
First relative altitude Δ h2=(the p1-p2)/k of the second moment t2 and the first moment t1；
First relative altitude Δ h3=(the p2-p3)/k of the 3rd moment t3 and the second moment t2.
By the real-time h0 that is highly designated as of described initial time, the most described first is the most highly:
The first of first moment t1 height h1=h0+ Δ h1 in real time；
The first of second moment t2 height h2=h1+ Δ h2 in real time；
The first of 3rd moment t3 height h3=h2+ Δ h3 in real time.
Obtain the first relative altitude according to measuring draught head, obtain the described first real-time height (the most real-time sea
Degree of lifting), measuring method is simple.
But, the process of atmospheric pressure value of sampling each time all has error so that the relative altitude every time measured all has
There is certain error so that each relative altitude calculated all has error delta, and described first is the highest
Degree needs to be overlapped the relative altitude in each moment, such as, and the first of the 3rd moment t3 height in real time
H3=h2+ Δ h3=h0+ Δ h1+ Δ h2+ Δ h3, all there is error delta in described relative altitude Δ h1, Δ h2, Δ h3, and
Superposition all can accumulate once error every time so that the error in the first of the 3rd moment t3 height h3 in real time is 3
δ, the application condition of the first of the 3rd moment t3 height h3 in real time is big.
It is also preferred that the left adding up, as in figure 2 it is shown, described height-gauge 1 also includes in order to avoid error
Interval sampling unit 122.Between described interval sampling unit 122 is with the integral multiple time of described specified time interval
Every the atmospheric pressure value of object local environment described in real-time sampling.In the present embodiment, described interval sampling unit 122
The atmospheric pressure value of described object local environment can be sampled by itself, the most described interval sampling unit 122
Body has the function measuring air pressure.It is also preferred that the left after described specified time interval n-th is sampled, described
Interval sampling unit 122 is sampled the atmospheric pressure value of described object local environment, wherein, n can be 2 with value, 3,
4,5 or bigger, such as, described interval sampling unit 122 samples it in described specified time interval the 4th
After, the atmospheric pressure value that described interval sampling unit 122 is sampled at the 3rd moment t3 is p3.
Then, once with the gas of described integral multiple time interval sampling before described high computational module 131 utilizes
Pressure value, with when time air pressure difference of sampling, obtains a second real-time relative altitude, concrete, and described second
Relative altitude is:
3rd moment t3 (sampling of described specified time interval n-th) and initial time t0 (described specific time
Between be spaced the 1st time sampling) the second relative altitude Δ h3 '=(p0-p3)/k.
Described high computational module 131 height in real time and current second according to described object initial time
Relative altitude, obtains real-time second height in real time, concrete, and described the second real-time real-time height is:
The second of 3rd moment t3 height h3 '=h0+ Δ h3 ' in real time.
The second of 3rd moment t3 height h3 ' in real time only have an error, the i.e. error delta of Δ h3 ', institute
With, the error of the h3 of height in real time than the 3rd moment t3 is little.Then the described second the most highly h3 ' is covered institute
State the first the most highly h3, thus by described real-time sampling unit 121 and described interval sampling unit 122
Be used in combination, both can ensure that the height that can obtain current time in real time, can avoid again introducing too much
Error.
Described real-time sampling unit 121 is after described n+m sampling, and described interval sampling unit 122 obtains
Take the described real-time sampling unit 121 atmospheric pressure value in described n+m sampling, described high computational module 131
According to when time air pressure of sampling and the draught head of n-th sampling, obtain a second real-time relative altitude, and
The height in real time obtained according to the sampling of described object n-th and the second current relative altitude, obtain real-time
Second real-time height, utilize current described second highly replace in real time described n+m time sample obtain real-time
Highly.Wherein, n can be 2,3,4,5 or bigger with value, and circulates this step of execution.
When height is for being stored in the fixed value in described memorizer 150 in real time of described initial time, or institute
When the standard height above sea level of stating can obtain in modes such as manually key entries, described initial time in real time the most highly can be with
The height above sea level at the actual place of described object is inconsistent, and now, the height in real time of described initial time is non-standard
Really during value (height in real time of initial time is inconsistent with actual height above sea level), in order to avoid described initially
The most inaccurate real-time error caused in moment, it is also preferred that the left in the present embodiment, described height-gauge 1
Also include a height comparing unit 141.Described height comparing unit 141 connects described high computational module respectively
131 with memorizer 150, described height comparing unit 141 relatively described first height in real time and described initial time
The height h0 in real time carved, when the described first real-time height is less than the height in real time of described initial time, i.e. institute
Stating relative altitude is negative value, and the h0 of height in real time of described initial time covers described first the most highly.Such as,
In another embodiment of the invention, if at initial time t0, described height-gauge 1 is positioned at one 10 meters
Upstairs, then when opening the h0 of height in real time that described height-gauge 1 initializes described initial time, pass through
It is 100 meters (hypo height of standard) that network is automatically updated into the h0 of height in real time of described initial time, when
Downstairs, described height-gauge 1 is positioned at the hypo height of standard, described altimeter to first moment t1 user
The h1 of height in real time calculating the first moment t1 that module 131 calculates is 90 meters, and the most described height-gauge 1 shows
That shows is highly updated to 100 meters in real time.
It is also preferred that the left as in figure 2 it is shown, in the present embodiment, described computing unit 130 also includes Stall layer by layer
Number computing unit 133, as it is shown in figure 1, carry out step S16, described floor number of plies computing unit 133 basis
The difference of the height in real time of described initial time and described first height in real time, it is thus achieved that the floor of described current time
The number of plies.Such as, the height in real time of described initial time is 60 meters, and described first is the most highly 70 meters,
If the height arranging floor is 2.5 meters, the number of plies of the most described floor be (described first in real time height 70 meters-
The in real time height 60 meters of described initial time) height 2.5 meters=4 layers of/floor.
The described height-gauge 1 of the present invention i.e. can meet the needs obtaining height in real time, ensures again height
The accuracy measured.
The described height-gauge 1 of the present invention can apply to wearable device, such as, and mobile phone, intelligence hands
Ring, pedometer etc., can facilitate the real-time height measuring user accurately.
3rd embodiment
Reference Fig. 3, Fig. 3 are the schematic diagram of third embodiment of the invention camber measuring instrument, in figure 3, with
Label identical for Fig. 2 represents the part identical with the second embodiment.The height-gauge 2 of described 3rd embodiment
Essentially identical with the height-gauge 1 of described second embodiment, its difference is: described interval sampling unit
222 obtain atmospheric pressure value from described real-time sampling unit 221, concrete, and described height-gauge 2 also includes one
Control module 260, described control module 260 connects described interval sampling unit 222 respectively and described adopts in real time
Sample unit 221, after described specified time interval n-th is sampled, described control module 260 is from described reality
Time sampling unit 121 obtain n-th sampling atmospheric pressure value, and by n-th sample atmospheric pressure value pass to institute
State interval sampling unit 122, such that it is able to avoid arranging special air pressure in described interval sampling unit 222
The air pressure sampling elements such as meter, it is only necessary to a special barometer is set in described real-time sampling unit 221
Deng air pressure sampling element, i.e. can realize all of air pressure and use function.
The described height-gauge 2 of the present invention i.e. can meet the needs obtaining height in real time, ensures again height
The accuracy measured, also within the thought range of the present invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (11)
1. a height measurement method, it is characterised in that including:
Initialize the object real-time height at initial time；
Atmospheric pressure value with object local environment described in a specified time interval real-time sampling；
According to front once with the sampling of described specified time interval and the air pressure difference between time sampling, obtain one
The first real-time relative altitude, and according to before described object once with described specified time interval sample real-time
Height and described first relative altitude, obtain first the most highly；
Air pressure with object local environment described in the integral multiple time interval real-time sampling of described specified time interval
It is worth, and once with the atmospheric pressure value of described integral multiple time interval sampling and when the secondary air pressure difference sampled before utilization,
Obtain a second real-time relative altitude, and according to described object front once with described integral multiple time interval
In real time height and described second relative altitude of sampling, obtains the second height in real time, utilizes described second real-time
Highly replace first the most highly.
2. height measurement method as claimed in claim 1, it is characterised in that
Air pressure with object local environment described in the integral multiple time interval real-time sampling of described specified time interval
Value step is:
After described specified time interval n-th is sampled, according to when time air pressure and the initial gas pressure of sampling it
Difference, obtains a second real-time relative altitude, and according to the height in real time of described object initial time and current
The second relative altitude, obtain real-time second in real time height, utilize current described second highly to replace in real time
Change the first real-time height that the sampling of described n-th obtains；
After described n+m sampling, according to working as time air pressure of sampling and the draught head of n-th sampling, obtain
To a second real-time relative altitude, and the height in real time obtained of sampling according to described object n-th is with current
The second relative altitude, obtain real-time second in real time height, utilize current described second highly to replace in real time
Change the first real-time height that described n+m sampling obtains；
Circulation performs this step；
Wherein, n, m are the natural number more than or equal to 2.
3. height measurement method as claimed in claim 1 or 2, it is characterised in that described initial time
Height is non-exact value in real time, and described height measurement method also includes: the relatively described first real-time height and institute
State the real-time height of initial time, when the height in real time that described first is the most highly less than described initial time,
The real-time of described initial time highly covers described first the most highly.
4. height measurement method as claimed in claim 1 or 2, it is characterised in that described elevation carrection side
Method also includes: according to the difference of height in real time and described first height in real time of described initial time, it is thus achieved that described
The floor number of plies of current time.
5. height measurement method as claimed in claim 1 or 2, it is characterised in that described first relatively high
Degree and the second relative altitude obtain according to a difference in height computing formula, and described difference in height computing formula is: Δ H=
(P1-P2)/k, wherein, Δ H is described first relative altitude or the second relative altitude, and P1 is front once to adopt
The atmospheric pressure value of sample, P2 is that k is that variable, k Yu P2 or P1 have a corresponding relation when time atmospheric pressure value of sampling,
Value according to P2 or P1 determines the value of k.
6. a height-gauge, it is characterised in that including:
Real-time sampling unit, with the atmospheric pressure value of object local environment described in a specified time interval real-time sampling；
Interval sampling unit, with object described in the integral multiple time interval real-time sampling of described specified time interval
The atmospheric pressure value of local environment；
Memorizer, for storing described object height in real time and first height in real time at initial time；
Height calculation unit, described high computational module according to front once with described specified time interval sampling with
Air pressure difference between secondary sampling, obtains a first real-time relative altitude, and previous according to described object
The secondary height in real time sampled with described specified time interval and described first relative altitude, obtain first the highest
Degree；Meanwhile, once with the atmospheric pressure value of described integral multiple time interval sampling before described high computational module utilizes
With when time air pressure difference of sampling, obtain a second real-time relative altitude, and according to described object previous
Secondary height and described second relative altitude in real time sampled with described integral multiple time interval, obtains second real-time
Highly, the described second height replacement in real time first height in real time is utilized.
7. height-gauge as claimed in claim 6, it is characterised in that described interval sampling unit is from institute
State real-time sampling unit and obtain atmospheric pressure value.
Height-gauge the most as claimed in claims 6 or 7, it is characterised in that the reality of described initial time
Shi Gaodu is non-exact value, and described height-gauge also includes a height comparing unit, and described aspect ratio is more single
Unit more described first height in real time and the real-time height of described initial time, when described first is the lowest
When the height in real time of described initial time, the real-time of described initial time highly covers the described first real-time height
Degree.
Height-gauge the most as claimed in claims 6 or 7, it is characterised in that described height-gauge is also
Count computing unit layer by layer including Stall, described floor number of plies computing unit is according to the real-time height of described initial time
The difference of degree and described first height in real time, it is thus achieved that the floor number of plies of described current time.
Height-gauge the most as claimed in claims 6 or 7, it is characterised in that described height calculation unit
Calculating relative altitude according to a difference in height computing formula, described difference in height computing formula is: Δ H=(P1-P2)
/ k, wherein, Δ H is described relative altitude, and P1 is the atmospheric pressure value of described previous moment, P2 be described currently
The atmospheric pressure value in moment, k is that variable, k Yu P2 or P1 have a corresponding relation, and the value according to P2 or P1 is true
Determine the value of k.
11. 1 kinds of wearable devices, including the height-gauge as described in any one in claim 6 to 10.
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| CN201510025449.8A CN105865417A (en) | 2015-01-19 | 2015-01-19 | Height measuring method, height measuring instrument and wearable device |
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| CN201510025449.8A CN105865417A (en) | 2015-01-19 | 2015-01-19 | Height measuring method, height measuring instrument and wearable device |
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