CN107315118A - A kind of mobile unit condition detection method - Google Patents
A kind of mobile unit condition detection method Download PDFInfo
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- CN107315118A CN107315118A CN201610087969.6A CN201610087969A CN107315118A CN 107315118 A CN107315118 A CN 107315118A CN 201610087969 A CN201610087969 A CN 201610087969A CN 107315118 A CN107315118 A CN 107315118A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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Abstract
The present invention provides a kind of mobile unit condition detection method, is judged using detection method is fallen, including collection falls data, is compared with historical data, and alarm is removed beyond triggering when falling threshold value；Or carry out comprehensive descision with reference to the data that the data and dump angle detection method that acceleration change overrun testing method is obtained are obtained, judge whether that alarm is removed in triggering, including the historical data for gathering acceleration change information, calling acceleration change degree, judge whether acceleration changes, doubtful dismounting grade；Flip angle status information capture is also carried out simultaneously, the historical data and three-dimensional feature vector of flip angle is called to calculate characteristic value, judge whether to topple over, the present invention uses simple acceleration transducer, reduce hardware cost and power consumption, handled it judgement using computer software, the rapidity and accuracy of result of calculation are realized, while high detection accuracy can be realized according to equipment installation environment self-defined adjusting parameter.
Description
Technical field
The invention mainly relates to sensor technical field, more particularly to a kind of mobile unit condition detection method, based on adding
The change of velocity sensor is transfinited, dump angle and composite algorism of falling judge that equipment tolls breakdown the reliability of state.
Background technology
For terminal device, the state change of equipment dismounting is the detection of high accuracy requirement, except using hardware tamper
Switch is outer, in addition it is also necessary to the accuracy and reliability of detection are ensured by the algorithm testing mechanism of built-in sensors.
Prior art typically carries out the attitude detection of equipment using single mode, is then detected according to cheap sensor
Accuracy rate is not high, higher according to multisensor compound hardware cost and power consumption.
The content of the invention
The present invention, which is provided, realizes the accurate change for judging equipment state, in order to achieve the above object,
The present invention uses following technical scheme：The present invention provides a kind of mobile unit condition detection method, including fall detection side
Method, it is described to fall detection method, including：
1）It is described when falling data and falling for equipment using the drop signal data for falling sensor collecting device, by falling biography
The signal data that sensor is detected；
2）Call and fall the historical signal data storehouse that sensor is detected, historical signal data storehouse memory storage for numeral letter
Number；
3) whether judge to fall data that sensor detects beyond falling threshold value using comparison module, if beyond falling threshold value,
Alarm is removed in triggering.
It is preferred that, in addition to dump angle detection method, the dump angle detection method is worked as embodiment device to lean forward
Status information, calculates flip angle, and extract the characteristic value by dump angle using angle of inclination detection algorithm；It is described to topple over
Angle detecting method includes：1）The signal data of the tilt state of equipment, the tilt state are collected using obliquity sensor
Signal data be equipment run-off the straight when, as the signal detected by obliquity sensor；2）Obliquity sensor is obtained to have gathered
Digital signal data historical record, the historical data gathered according to obliquity sensor, extract three-dimensional feature vector；3）According to
2）In characteristic vector calculate on 1）In data signal characteristic value；4）Characteristic value exceeds tilt threshold, judges to think
Doubtful dismounting state, is represented to be judged according to dump angle with E2 and thinks to be currently at doubtful dismounting state.
It is preferred that, in addition to acceleration change overrun testing method, the acceleration change overrun testing method includes：1）
The acceleration signal data in three directions of acceleration transducer collection X, Y, Z axis, 2）X, Y, Z axis three is obtained by data summarization
The intensity of variation of the acceleration in direction；3) historical data of the acceleration change gathered is obtained, an acceleration rate threshold is set；
4）Judge that the intensity of variation of acceleration is in doubtful dismounting grade；The acceleration change overrun testing algorithm judges equipment
Acceleration change degree, when being represented to exceed acceleration rate threshold according to acceleration change degree with E1, judges and thinks current place
In doubtful dismounting state.
It is preferred that, in addition to：Dump angle detection method and acceleration change overrun testing method, represent that basis adds with E1
Velocity variations degree thinks to be currently at doubtful dismounting state, is represented to be judged according to dump angle with E2 and think to be currently at
Doubtful dismounting state, with reference to E1 and/or E2, acceleration rate threshold, tilt threshold, carries out the judgement of equipment state, the equipment shape
State includes：00th, 01,10,11 4 states, wherein 00 state is equipment init state；01 state is in occur acceleration
Doubtful dismounting state, 10 states are run-off the straight, in doubtful dismounting state, and 11 remove warning information state to send.
It is preferred that, when entering 01 state by 00 state, counter T is reset；Counter T is added up during state 01,
In state 01, such as occur event E1, then again reset counter T, when entering state 11 by state 01, record upper one
Historic state, in state 11, sends dismounting warning information, and determines NextState according to the historic state of record, by shape
When state 11 enters corresponding state, counter T is reset.
It is preferred that, when entering 10 state by 00 state, counter T is reset；Counter T is added up during state 10,
In state 10, such as occur event E2, then again reset counter T；
When entering state 11 by state 10, a upper historic state is recorded, in state 11, dismounting warning information, and root is sent
NextState is determined according to the historic state of record, when entering corresponding state by state 11, counter T is reset.
The present invention also provides [l1] dump angle detection method and acceleration change overrun testing method, the flip angle
Spending detection method is used for the current tilt state information of embodiment device, calculates flip angle using angle of inclination detection algorithm, and extract
By the characteristic value of dump angle, when being represented with E2 according to dump angle beyond the tilt threshold of setting, judge and think to work as
It is preceding to be in doubtful dismounting state；
The acceleration change overrun testing method is used to judge that equipment is in doubtful dismounting grade, is transfinited using acceleration change
Detection method algorithm judges equipment Acceleration intensity of variation, is represented to exceed acceleration rate threshold according to acceleration change degree with E1
When, judge and think to be currently at doubtful dismounting state；
With reference to E1 and/or E2, acceleration rate threshold, tilt threshold, the judgement of equipment state is carried out, the equipment state includes：00、
01st, 10,11 4 states, wherein 00 state is equipment init state；Is acceleration occurs for 01 state, in doubtful dismounting shape
State, 10 states are run-off the straight, in doubtful dismounting state, and 11 remove warning information state to send.
It is preferred that, the dump angle detection method includes：1）The tilt state of equipment is collected using obliquity sensor
Signal data, when the signal data of the tilt state is equipment run-off the straight, as the signal detected by obliquity sensor；
2）The digital signal data historical record that acquisition obliquity sensor has been gathered, the historical data gathered according to obliquity sensor,
Extract three-dimensional feature vector；3）According to 2）In characteristic vector calculate on 1）In data signal characteristic value；4）Feature
Value exceeds threshold value, and doubtful dismounting state is thought in judgement, when being represented to exceed tilt threshold according to dump angle with E2, judges and recognizes
To be currently at doubtful dismounting state.
It is preferred that, the acceleration change overrun testing method includes：1）Three sides of acceleration transducer collection X, Y, Z axis
To acceleration signal data 2）The intensity of variation of the acceleration in three directions of X, Y, Z axis is obtained by data summarization；3) obtain
The historical data of the acceleration change gathered, sets a threshold parameter；4）Judge the intensity of variation of acceleration in doubtful
Grade is removed, when representing that acceleration change degree exceeds acceleration rate threshold with E1, judges and thinks to be currently at doubtful dismounting
State.
It is preferred that, when entering 01 state by 00 state, counter T is reset；Counter T is added up during state 01,
In state 01, such as occur event E1, then again reset counter T, when entering state 11 by state 01, record upper one
Historic state, in state 11, sends dismounting warning information, and determines NextState according to the historic state of record, by shape
When state 11 enters corresponding state, counter T is reset.
It is preferred that, when entering 10 state by 00 state, counter T is reset；Counter T is added up during state 10,
In state 10, such as occur event E2, then again reset counter T；When entering state 11 by state 10, record upper one
Historic state, in state 11, sends dismounting warning information, and determines NextState according to the historic state of record, by shape
When state 11 enters corresponding state, counter T is reset.
Beneficial effects of the present invention：The present invention uses simple acceleration transducer, reduces hardware
Cost and power consumption, carry out various states detection and COMPREHENSIVE CALCULATING processing of the present invention based on simple acceleration transducer
Algorithm, is handled it judgement using computer software, the rapidity and accuracy of result of calculation is realized, while can pacify according to equipment
The dress self-defined adjusting parameter of environment realizes high detection accuracy.
Brief description of the drawings
Fig. 1 is dismounting detection algorithm flow chart of the invention；
Fig. 2 is the flow chart of the invention on falling detection；
Flow charts of the Fig. 3 for the present invention on dump angle detection method；
Flow charts of the Fig. 4 for the present invention on acceleration detection；
Fig. 5 is the algorithm flow chart of comprehensive descision of the present invention；
1st, detection algorithm output result in angle of inclination is from normally switching to topple over；
2nd, detection algorithm output result is fallen from normally switching to fall；
3rd, the fusion of acceleration change overrun testing algorithm and angle of inclination detection algorithm；
4th, alarm is removed in triggering.
Embodiment
Understand as shown in Figure 1, the present invention provides a kind of mobile unit condition detection method, including falls detection method progress
Judgement, acceleration change overrun testing method and dump angle detection method, mainly including following five kinds combination judgment modes：
(1) data obtained according to acceleration change overrun testing method think that equipment is in doubtful dismounting state for judgement；
(2) according to dump angle detection method, obtained data think that equipment is in doubtful dismounting state for judgement；
(3) it can directly judge whether equipment is fallen and trigger dismounting alarm according to falling the data that detection method obtains；
(4) acceleration change overrun testing method and the combination for falling detection method, for confirming to judge that equipment is in doubtful
Dismounting state still triggers dismounting alarm status；
(5) dump angle detection method and the combination for falling detection method, for confirming to judge that equipment is to be in doubtful dismounting shape
State still triggers dismounting alarm status；
(6) data that the data and dump angle detection method obtained according to acceleration change overrun testing method are obtained are integrated
Judge, for judging whether equipment is fallen and dismounting alarm of setting out.
(7) while acceleration change overrun testing method and dump angle detection method are combined, also with falling detection side
The combination of method judges, state is fallen for reaffirming that equipment is in；
Understand as shown in Figure 2, the detection method of falling includes 1）Using the drop signal data for falling sensor collecting device,
It is described when falling data and falling for equipment, by falling the signal data that sensor is detected；2）Call and fall sensor and detect
Historical signal data storehouse, historical signal data storehouse memory storage for digital signal data；3) judged using comparison module
Whether fall data that sensor detects beyond threshold value is fallen, if beyond threshold value is fallen, alarm is removed in triggering.
Carry out it is above-mentioned fall detection method and carry out falling inspection data acquisition to set fall threshold value, fall data acquisition base
Carried out on the basis of test system, the test system includes：Perceive card, collector and PC, the perception card peace
Mounted in chest top surface or side, acceleration transducer is installed in the perception card, whether torn open for detection device from chest
Remove, the acceleration transducer is connected by wireless communication module with collector, the serial ports that the data of collection are passed through into collector
Communication is conveyed to PC, falls data test including normal level state is fallen, plumbness is fallen, tilt angled fall
Fall test,
（1）Carry out normal level state to fall, its testing procedure is：
1）By empty carton opening upwards, bottom spreads shock absorbing foam, is positioned over level ground；2）Collector is ready to, it is ensured that
EM equipment module is in normal operating conditions；3）Collector ensures to perceive the height for being positioned in 1.5 m directly over sky carton, card face
Parallel to ground；4）Start to gather acceleration transducer data, the time continues 10 seconds or so；5）Collector, which decontrols, perceives card,
By its free-electron model；6）Continue to gather acceleration transducer data, to perception card remains stationary；7）Collection completes 1 group of data, with
Numerical nomenclature rule preserves acceleration transducer data；8）Repeat step 1-7 operation, gathers 5 groups of data samples altogether.
（2）Carry out plumbness to fall, its testing procedure is：
1）By empty carton opening upwards, bottom spreads shock absorbing foam, is positioned over level ground；2）Collector is ready to, it is ensured that
EM equipment module is in normal operating conditions；3）Collector ensures to perceive the height for being positioned in 1.5 m directly over sky carton, card face
Perpendicular to ground；4）Start to gather acceleration transducer data, the time continues 10 seconds or so；5）Collector, which decontrols, perceives card,
By its free-electron model；6）Continue to gather acceleration transducer data, to perception card remains stationary；7）Collection completes 1 group of data, with
Numerical nomenclature rule preserves acceleration transducer data；8）Repeat step 1-7 operation, gathers 5 groups of data samples altogether.
（3）Progress inclination is angled to be fallen, and its testing procedure is：
1）By empty carton opening upwards, bottom spreads shock absorbing foam, is positioned over level ground；2）Collector is ready to, it is ensured that
EM equipment module is in normal operating conditions；3）Collector ensures to perceive the height for being positioned in 1.5 m directly over sky carton, card face
There is certain angle with ground；4）Start to gather acceleration transducer data, the time continues 10 seconds or so；5）Collector decontrols sense
Card is known, by its free-electron model；6）Continue to gather acceleration transducer data, to perception card remains stationary；7）Collection completes 1 group of number
According to numerical nomenclature rule preservation acceleration transducer data；8）The operation of repeat step 1 ~ 7, gathers 5 groups of data samples altogether
This.
Drop test carries out 15 groups of tests, collects 15 groups of data samples, data simulation fitting is carried out by PC, using trial and error
Method, which is chosen, falls threshold value；
Understand as shown in Figure 3, the dump angle detection method includes：1）Topple over shape using what obliquity sensor collected equipment
The signal data of state, when the signal data of the tilt state is equipment run-off the straight, as the letter detected by obliquity sensor
Number；2）Obtain the digital signal data historical record that obliquity sensor has been gathered, the history number gathered according to obliquity sensor
According to extraction three-dimensional feature vector；3）According to 2）In characteristic vector calculate on 1）In data signal characteristic value；4）It is special
Value indicative exceeds tilt threshold, and doubtful dismounting state is thought in judgement, and the tilt threshold beyond setting according to dump angle is represented with E2
When, judge and think to be currently at doubtful dismounting state；
Topple over test using card progress is perceived, it is described to topple over test based on progress, the test system on the basis of test system
Include：Card, collector and PC are perceived, the perception card is arranged in chest top surface or side, the perception card and installed
There is acceleration transducer, whether removed for detection device from chest, the acceleration transducer passes through wireless communication module
It is connected with collector, the data of collection is conveyed to PC by the serial communication of collector, it is described to topple over testing procedure and be：
（1）Sticker is perceived to carry out toppling over test when case top：
1）Sticker will be perceived in chest top surface, chest normally lies against ground；2）Collector is ready to, it is ensured that at EM equipment module
In normal operating conditions；3）Start to gather acceleration transducer data, the time continues 10 seconds or so；4）Collector's selection is final
It is that x-axis topples over chest perpendicular to the direction on ground；5）After the completion of chest is toppled over, continue to gather 10 seconds left sides of acceleration transducer data
It is right；6）Collection completes 1 group of data, and acceleration transducer data are preserved with numerical nomenclature rule；7）The operation of repeat step 1 ~ 6,
2 groups of data samples are gathered altogether；8）X-axis in step 4 is changed to y-axis, repeat step 1-7 operation.
（2）Sticker is perceived to carry out toppling over test when case side：
1）Sticker will be perceived in chest side, chest normally lies against ground；2）Collector is ready to, it is ensured that at EM equipment module
In normal operating conditions；3）Start to gather acceleration transducer data, the time continues 10 seconds or so；4）Collector is to post sense
The side for knowing card is that starting point selects first side to be final patch ground clockwise, topples over chest；5) chest topples over completion
Afterwards, continue to gather acceleration transducer data 10 seconds or so；6) collection completes 1 group of data, is preserved and accelerated with numerical nomenclature rule
Spend sensing data；7) repeat step 1-6 operation, gathers 2 groups of data samples altogether;8) successively by step 4）In patch ground
Second, the 3rd side are changed to, 1-7 operation is respectively repeated steps.
When carrying out dump angle data acquisition, the data of 10 groups of dump angles are collected, PC end is imitated the data
True fitting, and tilt threshold is chosen using trial and error method；
Understand as shown in Figure 4, the acceleration change overrun testing method includes：1）Acceleration transducer gathers X, Y, Z axis three
The acceleration signal data in individual direction, 2）The intensity of variation of the acceleration in three directions of X, Y, Z axis is obtained by data summarization；3)
The historical data of the acceleration change gathered is obtained, an acceleration rate threshold is set；4）Judge at the intensity of variation of acceleration
In doubtful dismounting grade, when being represented to exceed acceleration rate threshold according to acceleration change degree with E1, judge and think current place
In doubtful dismounting state.
The choosing method of the acceleration rate threshold is：, can be direct by test system when casing generating state changes
The delta data of acceleration is collected, and emulation fitting is carried out at PC end, acceleration change threshold value is chosen with reference to trial and error method.
Understood with reference to Fig. 1,3,4,5, be used to sentence with reference to dump angle detection method and acceleration change overrun testing method
Disconnected whether to trigger dismounting alarm, the dump angle detection method is used for the current tilt state information of embodiment device, utilizes inclination
Angle detection algorithm calculates flip angle, and extracts the characteristic value by dump angle, represents to be made according to dump angle with E2 and sentences
It is disconnected to think to be currently at doubtful dismounting state；The acceleration change overrun testing method is used to judge that equipment is in doubtful remove
Grade, judges equipment Acceleration intensity of variation using acceleration change overrun testing algorithm, is represented with E1 according to acceleration change
Degree, which is judged, to be thought to be currently at doubtful dismounting state；Carried out with reference to E1 and/or E2 and acceleration rate threshold, tilt threshold
The judgement of equipment state.
Understand as shown in Figure 5, equipment state is divided into 00,01,10,11 4 states, and 00 state is equipment init state；
Is acceleration occurs for 01 state, in doubtful dismounting state, and 10 states are run-off the straight, in doubtful dismounting state, and 11 be hair
Go out to remove warning information state.
It is preferred that, when entering 01 state by 00 state, counter T is reset；Counter T is added up during state 01,
In state 01, such as occur event E1, then again reset counter T, when entering state 11 by state 01, record upper one
Historic state, in state 11, sends dismounting warning information, and determines NextState according to the historic state of record, by shape
When state 11 enters corresponding state, counter T is reset.
It is preferred that, when entering 10 state by 00 state, counter T is reset；Counter T is added up during state 10,
In state 10, such as occur event E2, then again reset counter T；When entering state 11 by state 10, record upper one
Historic state, in state 11, sends dismounting warning information, and determines NextState according to the historic state of record, by shape
When state 11 enters corresponding state, counter T is reset.
The principle and its effect of above-described embodiment only illustrative present patent application, not for limitation this patent Shen
Please.Any person skilled in the art can all be carried out without prejudice under the spirit and scope of present patent application to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in present patent application
God is with all equivalent modifications completed under technological thought or change, and the claim that should be asked by this patent is covered.
Acceleration change overrun testing method, doubtful dismounting state is obtained as power 2.
Claims (11)
1. a kind of mobile unit condition detection method, it is characterised in that：It is described to fall detection method including falling detection method,
Including：
1）It is described when falling data and falling for equipment using the drop signal data for falling sensor collecting device, by falling biography
The signal data that sensor is detected；
2）Call and fall the historical signal data storehouse that sensor is detected, historical signal data storehouse memory storage for numeral letter
Number；
3) whether judge to fall data that sensor detects beyond falling threshold value using comparison module, if beyond falling threshold value,
Alarm is removed in triggering.
2. a kind of mobile unit condition detection method according to claim 1, it is characterised in that：Also include dump angle to examine
Survey method, the dump angle detection method is used for the current tilt state information of embodiment device, utilizes angle of inclination detection algorithm
Flip angle is calculated, and extracts the characteristic value by dump angle；The dump angle detection method includes：1）Sensed using inclination angle
Device collects the signal data of the tilt state of equipment, when the signal data of the tilt state is equipment run-off the straight, by inclining
Signal detected by angle transducer；2）The digital signal data historical record that obliquity sensor has been gathered is obtained, according to inclination angle
The historical data that sensor has been gathered, extracts three-dimensional feature vector；3）According to 2）In characteristic vector calculate on 1）In
The characteristic value of data signal；4）Characteristic value exceeds tilt threshold, and judgement is thought doubtful dismounting state, represented with E2 according to flip angle
Degree, which is judged, to be thought to be currently at doubtful dismounting state.
3. a kind of mobile unit condition detection method according to claim 1, it is characterised in that：Also include acceleration change
Overrun testing method, the acceleration change overrun testing method includes：1）Three directions of acceleration transducer collection X, Y, Z axis
Acceleration signal data, 2）The intensity of variation of the acceleration in three directions of X, Y, Z axis is obtained by data summarization；3) obtain
The historical data of the acceleration change of collection, sets an acceleration rate threshold；4）Judge the intensity of variation of acceleration in doubtful
Remove grade；The acceleration change overrun testing algorithm judges equipment Acceleration intensity of variation, represents that basis adds with E1
When velocity variations degree exceeds acceleration rate threshold, judge and think to be currently at doubtful dismounting state.
4. a kind of mobile unit condition detection method according to claim 1, it is characterised in that：Also include：Dump angle
Detection method and acceleration change overrun testing method, are represented to be thought to be currently at doubtful tear open according to acceleration change degree with E1
Except state, represented to be judged according to dump angle with E2 and think to be currently at doubtful dismounting state, with reference to E1 and/or E2, added
Threshold speed, tilt threshold, carry out the judgement of equipment state, and the equipment state includes：00th, 01,10,11 4 states, its
In 00 state be equipment init state；Is acceleration occurs for 01 state, in doubtful dismounting state, and 10 states is incline
Tiltedly, warning information state is removed in doubtful dismounting state, 11 to send.
5. the method according to claim 4 for being used to judge equipment state, it is characterised in that：01 shape is entered by 00 state
During state, counter T is reset；Counter T is added up during state 01, in state 01, such as occurs event E1, then again will
Counter T is reset, when entering state 11 by state 01, records a upper historic state, in state 11, sends dismounting alarm letter
Breath, and NextState is determined according to the historic state of record, when entering corresponding state by state 11, counter T is reset.
6. the method according to claim 5 for being used to judge equipment state, it is characterised in that：10 shapes are entered by 00 state
During state, counter T is reset；
Counter T is added up during state 10, in state 10, such as occurs event E2, then again resets counter T；
When entering state 11 by state 10, a upper historic state is recorded, in state 11, dismounting warning information, and root is sent
NextState is determined according to the historic state of record, when entering corresponding state by state 11, counter T is reset.
[7. l1] dump angle detection method and acceleration change overrun testing method, the dump angle detection method are used for
The current tilt state information of embodiment device, calculates flip angle, and extract by dump angle using angle of inclination detection algorithm
Characteristic value, when being represented with E2 according to dump angle beyond the tilt threshold of setting, judges and thinks to be currently at doubtful dismounting
State；
The acceleration change overrun testing method is used to judge that equipment is in doubtful dismounting grade, is transfinited using acceleration change
Detection method algorithm judges equipment Acceleration intensity of variation, is represented to exceed acceleration rate threshold according to acceleration change degree with E1
When, judge and think to be currently at doubtful dismounting state；
With reference to E1 and/or E2, acceleration rate threshold, tilt threshold, the judgement of equipment state is carried out, the equipment state includes：00、
01st, 10,11 4 states, wherein 00 state is equipment init state；Is acceleration occurs for 01 state, in doubtful dismounting shape
State, 10 states are run-off the straight, in doubtful dismounting state, and 11 remove warning information state to send.
A kind of mobile unit condition detection method of piece 8. [l2] described in 7, it is characterised in that：The dump angle detection method
Including：1）The signal data of the tilt state of equipment is collected using obliquity sensor, the signal data of the tilt state is
During equipment run-off the straight, as the signal detected by obliquity sensor；2）Obtain the data signal number that obliquity sensor has been gathered
According to historical record, the historical data gathered according to obliquity sensor extracts three-dimensional feature vector；3）According to 2）In feature to
Gauge is calculated on 1）In data signal characteristic value；4）Characteristic value exceeds threshold value, and judgement thinks doubtful dismounting state, uses E2
When representing to exceed tilt threshold according to dump angle, judge and think to be currently at doubtful dismounting state.
9. a kind of mobile unit condition detection method according to claim 7, it is characterised in that：The acceleration change surpasses
Limit detection method includes：1）The acceleration signal data in three directions of acceleration transducer collection X, Y, Z axis, 2）Converged by data
The intensity of variation of total acceleration for obtaining three directions of X, Y, Z axis；3) historical data of the acceleration change gathered is obtained, if
A fixed threshold parameter；4）Judge that the intensity of variation of acceleration is in doubtful dismounting grade, acceleration change degree is represented with E1
During beyond acceleration rate threshold, judge and think to be currently at doubtful dismounting state.
10. the method that being used for according to claim 8,9 judges equipment state, it is characterised in that：Entered by 00 state
During 01 state, counter T is reset；
Counter T is added up during state 01, in state 01, such as occurs event E1, then again resets counter T, by
When state 01 enters state 11, a upper historic state is recorded, in state 11, dismounting warning information is sent, and according to record
Historic state determine NextState, by state 11 enter corresponding state when, counter T is reset.
11. the method that being used for according to claim 8,9 judges equipment state, it is characterised in that：Entered by 00 state
During 10 state, counter T is reset；
Counter T is added up during state 10, in state 10, such as occurs event E2, then again resets counter T；
When entering state 11 by state 10, a upper historic state is recorded, in state 11, dismounting warning information, and root is sent
NextState is determined according to the historic state of record, when entering corresponding state by state 11, counter T is reset.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107909809A (en) * | 2017-11-08 | 2018-04-13 | 深圳市唯恩科技有限公司 | Power alarm verification method, equipment and computer-readable recording medium |
| CN112781584A (en) * | 2020-12-25 | 2021-05-11 | 海尔数字科技(无锡)有限公司 | Cargo state detection method based on acceleration sensor |
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| CN102722115A (en) * | 2012-07-02 | 2012-10-10 | 三一重工股份有限公司 | Remote controller and method for preventing misoperation of remote controller |
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| CN107909809A (en) * | 2017-11-08 | 2018-04-13 | 深圳市唯恩科技有限公司 | Power alarm verification method, equipment and computer-readable recording medium |
| CN112781584A (en) * | 2020-12-25 | 2021-05-11 | 海尔数字科技(无锡)有限公司 | Cargo state detection method based on acceleration sensor |
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