CN107807599A - Vehicle safety monitoring system and its traffic accident monitoring method, collision and stolen alarm method - Google Patents
Vehicle safety monitoring system and its traffic accident monitoring method, collision and stolen alarm method Download PDFInfo
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- CN107807599A CN107807599A CN201711187886.5A CN201711187886A CN107807599A CN 107807599 A CN107807599 A CN 107807599A CN 201711187886 A CN201711187886 A CN 201711187886A CN 107807599 A CN107807599 A CN 107807599A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 50
- 206010039203 Road traffic accident Diseases 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001133 acceleration Effects 0.000 claims abstract description 67
- 238000004891 communication Methods 0.000 claims abstract description 11
- 230000003068 static effect Effects 0.000 claims description 8
- 230000003111 delayed effect Effects 0.000 claims description 6
- 230000011664 signaling Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
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- 208000003443 Unconsciousness Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
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- 230000006698 induction Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
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- Automation & Control Theory (AREA)
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- Emergency Alarm Devices (AREA)
Abstract
The present invention relates to technical field of vehicle control, more particularly to a kind of vehicle safety monitoring system, including central control module, 3-axis acceleration monitoring modular, d GPS locating module, timing module, voice cue module, alarm module and GSM communication modules etc. to form；Collision and stolen alarm when the traffic accident that the system can be carried out in vehicle travel process is monitored, stopped, the acceleration signal that the position signalling and GES that are provided using GPS geo-location system and the three axle acceleration sensors on vehicle are gathered judges the transport condition and safe condition of vehicle, reduces the quantity that conventional truck safety monitoring system uses sensor.
Description
Technical field
The present invention relates to technical field of vehicle control, more particularly to a kind of vehicle safety monitoring system and its traffic accident prison
Prosecutor method, collision and stolen alarm method.
Background technology
With the fast development of automobile industry and the continuous improvement of people's living standard, the popularity rate of automobile by
Year rapid increase, the traffic accident brought takes place frequently, the problem of a collide and be stolen of having stopped also increasingly protrudes.If it happens
Traffic accident, car owner's loss of consciousness or has no ability to expansion and saves oneself and alarm, and timely relief and alarm without other people, will
Optimal rescue opportunity can be lost, so it is one that vehicle can monitor vehicle-state and send an SOS in the process of moving
Individual important developing direction.It will be dropped significantly in addition, if vehicle location and direction of escaping can be provided after vehicle is stolen to the police
Low police's tracking and the difficulty for giving vehicle for change.At present, occurred aiding in carrying out vehicular traffic thing using GPS geo-location system
Therefore monitoring and stolen alarm, but information service platform is generally required for vehicle traffic accident monitoring, first help information is passed
Pass information service platform, it is determined that need that GPS location data are reported into emergency platform and the police again after alarming, car owner need to
Information service platform pays certain expense, so can not only increase and wait for rescue the time but also improve use cost；And for vehicle
Stolen warning system, generally requires to install a variety of monitoring devices and is judged, such as car door induction system, pyroelectric infrared-sensing
Sensor etc., therefore, add the cost that equipment investment is brought.In addition, it is serious all the more with urban transportation blockage problem,
Parking being collided and being also valued by people the problems such as artificial destruction, and the monitoring report collided for stopping vehicle
Alert application is considerably less, vacancy be present in technology and product.
The content of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned technology, and provide a kind of vehicle safety monitoring system and its traffic
Accident monitoring method, collision and stolen alarm method.
The present invention to achieve the above object, using following technical scheme：
A kind of vehicle safety monitoring system, it is characterised in that：Including central control module, 3-axis acceleration monitoring modular,
D GPS locating module, timing module, voice cue module, alarm module and GSM communication modules etc. form；
The scheduling that the controller that central control module includes is used between each module, according to 3-axis acceleration monitoring modular and
The signal of d GPS locating module collection makes a policy and is handed down to the voice cue module, alarm module, GSM communication modules；
The 3-axis acceleration monitoring modular is for the acceleration signal in collection vehicle X, Y, Z axis and to the motion of vehicle
Pattern is identified；
The d GPS locating module knows vehicle position information and speed information using GPS geo-location system；
The timing module is used to set the stand-by period, more than progress next step instruction after the stand-by period；
The voice cue module can play related voice by loudspeaker, prompt car owner to make feedback；
Lamp alarm of the alarm module including the use of LED and the audible alarm using loudspeaker；
The GSM communication modules are used to send short message prompt to car owner's cell-phone number or reserved cell-phone number and can be according to anti-
Feedforward information sends an SOS to 110 and 120.
Preferably, the X in the 3-axis acceleration monitoring modular and Y-axis are parallel to the plane of vehicle base, X-axis or Y
Axle is parallel to vehicle forward direction, plane of the Z axis perpendicular to vehicle base.
A kind of vehicle traffic accident monitoring method of vehicle safety monitoring system, it is characterised in that：Comprise the following steps：1)
Controller gathers acceleration signal and vehicle location and GES, and the acceleration of 3-axis acceleration monitoring sets two threshold values,
Translational acceleration a1 and traffic accident acceleration a2 when being respectively static；
2) judge whether the acceleration in vehicle traveling is more than traffic accident acceleration a2, if so, into step 3, if not
It is return to step 1；
3) it is delayed 10 seconds, judges whether speed is less than the speed v of setting, if so, into step 4, if it is not, return to step
1；
4) touch screen, which is shown, " monitors that traffic accident may occur for your vehicle, if need to seek help to 110 and 120”；
5) voice message " please confirming touch screen information as early as possible "；
6) judge that touch screen has feedback-less in 30 seconds, if so, being performed according to instruction, if not having, into step 7；
7) gsm module to cell-phone number send short messages breath " monitor that traffic accident may occur for your vehicle, if need to
110 and 120 seek help”；
8) voice message " please confirming cellphone information as early as possible "；
9) judge that mobile phone has feedback-less in 60 seconds, if so, being performed according to instruction, if not having, into step 10；
10) send help signal to 110 and 120 and send vehicle position information.
11) terminate, return to step 1, carry out the monitoring at next moment.
A kind of collision of vehicle safety monitoring system and stolen alarm method, it is characterised in that：Comprise the following steps：1) control
Device collection acceleration signal and vehicle location and GES processed；The acceleration of 3-axis acceleration monitoring sets two threshold values, point
Translational acceleration a1 and traffic accident acceleration a2 when being not static；
2) translational acceleration a1 when whether acceleration is more than static is judged, if so, into step 3, if it is not, return to step
1；
3) vehicle sound and light alarm 30 seconds；
4) it is delayed 90 seconds, judges whether speed is less than the speed v of setting, if so, into step 5, if it is not, into step
6；
5) gsm module is sent short messages breath " monitoring that your vehicle may be collided, please check " to cell-phone number, is terminated；
6) gsm module " monitors that your vehicle may be stolen, if need to seek help to 110 to cell-phone number breath of sending short messages”；
7) judge that mobile phone has feedback-less in 120 seconds, if so, being performed according to instruction, if not having, into step 8；
8) information of vehicles for sending help signal to 110 and sending vehicle position information, fleeing from direction and prestore.
9) terminate, return to step 1, carry out the monitoring at next moment.
Preferably, in step 8, the information of vehicles to prestore includes the number-plate number, vehicle color, brand, style.
The beneficial effects of the invention are as follows:When the traffic accident that the system can be carried out in vehicle travel process is monitored, stopped
Collision and stolen alarm, the position signalling and GES provided using GPS geo-location system and on vehicle
Three axle acceleration sensors collection acceleration signal judge vehicle transport condition and safe condition, reduce conventional truck peace
Full monitoring system uses the quantity of sensor, while the GSM communication modules carried can be to car owner's cell-phone number or reserved mobile phone
Number send short message prompt and can be sent an SOS according to feedback information to 110 and 120 and necessary vehicle location letter is provided
Breath, will send an SOS or alarm in the case of feedback-less always by force, so do to reduce to greatest extent and fail to report
With the probability of wrong report.The system has taken leave of operating service platform, reduces the use cost of car owner.
Brief description of the drawings
Fig. 1 is the system block diagram of the present invention；
Fig. 2 is vehicle traffic accident monitoring method flow chart in the present invention；
Fig. 3 is present invention collision and stolen alarm method flow chart.
Embodiment
Below in conjunction with the accompanying drawings and preferred embodiment describes the embodiment of the present invention in detail.A kind of as shown in figure 1, car
Safety monitoring system, is carried by central control module, 3-axis acceleration monitoring modular, d GPS locating module, timing module, voice
Show that module, alarm module and GSM communication modules etc. form.The controller that central control module includes is the system " brain ",
For the scheduling between each module, made a policy simultaneously according to the signal that 3-axis acceleration monitoring modular and d GPS locating module gather
It is handed down to execution module (voice cue module, alarm module, GSM communication modules)；3-axis acceleration monitoring modular is used to gather
Simultaneously the motor pattern of vehicle is identified for acceleration signal in vehicle X, Y, Z axis；D GPS locating module is fixed using the GPS whole world
Position system knows vehicle position information and speed information；Timing module is used to set the stand-by period, is carried out more than after the stand-by period
Instruct in next step；Voice cue module can play related voice by loudspeaker, prompt car owner to make feedback；Alarm module bag
Include using LED lamp alarm and the audible alarm using loudspeaker；GSM communication modules are used for car owner's cell-phone number or reserved hand
Machine number sends short message prompt and can sent an SOS according to feedback information to 110 and 120.
The system supports the control of vehicle LED touch screens, remote control and automatically controls Three models, and mould is controlled in LED touch screens
Under formula, car owner can by " in the traveling traffic accident monitor " on vehicle-mounted touch screen, " collided after parking and stolen alarm ", " take
Disappear and seek help " etc. function button or icon be controlled；Remote control pattern is to pass through bluetooth using mobile terminal device
Signal is controlled, and optional function controls with LED touch screens；Under automatic control mode, vehicle passing detection GPS location signal and
Speed determines whether to be in transport condition, will start vehicle traffic accident monitoring system in transport condition, and stop in for a long time
Car state will start collision and stolen warning system.
3-axis acceleration sensor should be noted to prevent from being destroyed during collision when installing, and X and Y-axis are parallel to vehicle base
Plane, X-axis or Y-axis are parallel to vehicle forward direction, and for Z axis perpendicular to the plane of vehicle base, it is accurate so to improve
Degree.The acceleration of 3-axis acceleration monitoring sets two threshold values, translational acceleration a1 and traffic accident acceleration when being respectively static
A2 is spent, a1 is much smaller than a2.Judgement to different vehicle state is realized by the setting of different threshold values, has any one direction to be more than
Threshold value, which belongs to acceleration, to transfinite.In order to judge that vehicle is transport condition or dead ship condition, a threshold value v is also provided with, works as car
Speed is more than v and represents that vehicle is in transport condition, represents that vehicle is in dead ship condition when speed is less than or equal to v, v numerical value is smaller.
The system makes full use of the vehicle location signal and GES and installed in car that GPS geo-location system provides
The acceleration signal of three axle acceleration sensors collection on judges the transport condition and safe condition of vehicle, by acceleration and two
Individual threshold value is compared simultaneously with the different collocation of GES progress, can identify vehicle in the process of moving by traffic thing
Therefore, recover after emergency brake during traveling after normal, vehicle parking by colliding, be stolen after vehicle stops and leave original position etc.
State.
The positional information and speed information of the real-time collection vehicle of d GPS locating module pass to central controller, when handing over
Interpreter thus need rescue when, GPS location signal is sent jointly to rescue department by the system；After generation vehicle is stolen, GPS can
To be tracked and position, provide information of vehicles, vehicle location to the police and flee from direction.
In order to reduce the probability failed to report and reported by mistake to greatest extent, the system in varied situations will be by gsm module to car
Main cell-phone number or pre- cell-phone number transmission short message of retaining are inquired, and are passed through speech prompting system and prompted car owner's confirmation letter
Breath, will send an SOS or alarm by force in the case of feedback-less always.
The system can charge equipped with uninterrupted power source, during normal vehicle operation to uninterrupted power source, when traffic thing occurs
After therefore, the power supply of uninterrupted power source is not interfered with even if vehicle power-off yet, system can be with normal operation.
The system is to judge vehicle-state using the acceleration signal and GES of collection.When vehicle is being run over
By traffic accident in journey, acceleration is more than a2, while speed is reduced to below v；When vehicle emergency brake in the process of moving
Recover normal afterwards, acceleration returns to more than v more than a2, speed；Collided after vehicle parking, acceleration is more than a1, together
When speed be still less than v；It is stolen after vehicle stops and leaves original position, acceleration is more than a1, and speed is more than v.
As shown in Fig. 2 the vehicle traffic accident monitoring method of the system is realized by following steps：
1) controller collection acceleration signal and vehicle location and GES；
2) judge whether acceleration is more than a2 (traffic accident acceleration), if so, into step 3, if it is not, return to step
1；
3) it is delayed 10 seconds, judges whether speed is less than v, if so, into step 4, if it is not, return to step 1；
4) touch screen, which is shown, " monitors that traffic accident may occur for your vehicle, if need to seek help to 110 and 120”；
5) voice message " please confirming touch screen information as early as possible "；
6) judge that touch screen has feedback-less in 30 seconds, if so, being performed according to instruction, if not having, into step 7；
7) gsm module to cell-phone number send short messages breath " monitor that traffic accident may occur for your vehicle, if need to
110 and 120 seek help”；
8) voice message " please confirming cellphone information as early as possible "；
9) judge that mobile phone has feedback-less in 60 seconds, if so, being performed according to instruction, if not having, into step 10；
10) send help signal to 110 and 120 and send vehicle position information.
11) terminate, return to step 1, carry out the monitoring at next moment.
As shown in figure 3, the collision of the system and stolen alarm method are realized by following steps：
1) controller collection acceleration signal and vehicle location and GES；
2) judge whether acceleration is more than a1 (translational acceleration when static), if so, into step 3, if it is not, returning to step
Rapid 1；
3) vehicle sound and light alarm 30 seconds；
4) it is delayed 90 seconds, judges whether speed is less than v, if so, into step 5, if it is not, into step 6；
5) gsm module is sent short messages breath " monitoring that your vehicle may be collided, please check " to cell-phone number, is terminated；
6) gsm module " monitors that your vehicle may be stolen, if need to seek help to 110 to cell-phone number breath of sending short messages”；
7) judge that mobile phone has feedback-less in 120 seconds, if so, being performed according to instruction, if not having, into step 8；
8) information of vehicles (license plate number send help signal to 110 and send vehicle position information, fled from direction and prestored
Code, vehicle color, brand, style etc.).
9) terminate, return to step 1, carry out the monitoring at next moment.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
- A kind of 1. vehicle safety monitoring system, it is characterised in that：Including central control module, 3-axis acceleration monitoring modular, GPS Locating module, timing module, voice cue module, alarm module and GSM communication modules etc. form；The scheduling that the controller that central control module includes is used between each module, according to 3-axis acceleration monitoring modular and GPS The signal of locating module collection makes a policy and is handed down to the voice cue module, alarm module, GSM communication modules；The 3-axis acceleration monitoring modular is for the acceleration signal in collection vehicle X, Y, Z axis and to the motor pattern of vehicle It is identified；The d GPS locating module knows vehicle position information and speed information using GPS geo-location system；The timing module is used to set the stand-by period, more than progress next step instruction after the stand-by period；The voice cue module can play related voice by loudspeaker, prompt car owner to make feedback；Lamp alarm of the alarm module including the use of LED and the audible alarm using loudspeaker；The GSM communication modules are used to send short message prompt to car owner's cell-phone number or reserved cell-phone number and can be according to feedback letter Cease and sent an SOS to 110 and 120.
- 2. vehicle safety monitoring system according to claim 1, it is characterised in that：In the 3-axis acceleration monitoring modular X and Y-axis parallel to the plane of vehicle base, X-axis or Y-axis are parallel to vehicle forward direction, and Z axis is perpendicular to vehicle base Plane.
- A kind of 3. vehicle traffic accident monitoring method according to claim 1, it is characterised in that：Specifically include following step Suddenly：1) controller collection acceleration signal and vehicle location and GES, the acceleration of 3-axis acceleration monitoring set two Threshold value, translational acceleration a1 and traffic accident acceleration a2 when being respectively static；2) judge whether the acceleration in vehicle traveling is more than traffic accident acceleration a2, if so, into step 3, if it is not, returning Return step 1；3) it is delayed 10 seconds, judges whether speed is less than the speed v of setting, if so, into step 4, if it is not, return to step 1；4) touch screen, which is shown, " monitors that traffic accident may occur for your vehicle, if need to seek help to 110 and 120”；5) voice message " please confirming touch screen information as early as possible "；6) judge that touch screen has feedback-less in 30 seconds, if so, being performed according to instruction, if not having, into step 7；7) gsm module " monitors that traffic accident may occur for your vehicle, if need to 110 Hes to cell-phone number breath of sending short messages 120 seek help”；8) voice message " please confirming cellphone information as early as possible "；9) judge that mobile phone has feedback-less in 60 seconds, if so, being performed according to instruction, if not having, into step 10；10) send help signal to 110 and 120 and send vehicle position information.11) terminate, return to step 1, carry out the monitoring at next moment.
- 4. a kind of collision according to claim 1 and stolen alarm method, it is characterised in that：Specifically include following steps： 1) controller collection acceleration signal and vehicle location and GES；The acceleration of 3-axis acceleration monitoring sets two thresholds Value, translational acceleration a1 and traffic accident acceleration a2 when being respectively static；2) translational acceleration a1 when whether acceleration is more than static is judged, if so, into step 3, if it is not, return to step 1；3) vehicle sound and light alarm 30 seconds；4) it is delayed 90 seconds, judges whether speed is less than the speed v of setting, if so, into step 5, if it is not, into step 6；5) gsm module is sent short messages breath " monitoring that your vehicle may be collided, please check " to cell-phone number, is terminated；6) gsm module " monitors that your vehicle may be stolen, if need to seek help to 110 to cell-phone number breath of sending short messages”；7) judge that mobile phone has feedback-less in 120 seconds, if so, being performed according to instruction, if not having, into step 8；8) information of vehicles for sending help signal to 110 and sending vehicle position information, fleeing from direction and prestore.9) terminate, return to step 1, carry out the monitoring at next moment.
- 5. collision according to claim 4 and stolen alarm method, it is characterised in that：In step 8, the car to prestore Information includes the number-plate number, vehicle color, brand, style.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711187886.5A CN107807599A (en) | 2017-11-24 | 2017-11-24 | Vehicle safety monitoring system and its traffic accident monitoring method, collision and stolen alarm method |
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| CN201711187886.5A CN107807599A (en) | 2017-11-24 | 2017-11-24 | Vehicle safety monitoring system and its traffic accident monitoring method, collision and stolen alarm method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109050527A (en) * | 2018-07-25 | 2018-12-21 | 浙江中科正方电子技术有限公司 | vehicle collision detecting system |
| CN109188024A (en) * | 2018-09-17 | 2019-01-11 | 广西中星电子科技有限公司 | A kind of collision based on three-axis sensor is tumbled anti-theft monitor |
| CN109532739A (en) * | 2018-11-05 | 2019-03-29 | 北汽福田汽车股份有限公司 | The exceptional state alarm method of vehicle-state abnormity prompt device, vehicle, vehicle |
| CN110021153A (en) * | 2019-04-04 | 2019-07-16 | 成都信息工程大学 | Automobile major accident alarm system and method |
| CN110775181A (en) * | 2019-10-23 | 2020-02-11 | 上海钧正网络科技有限公司 | Vehicle safety state monitoring method and device, computer equipment and storage medium |
| CN110823484A (en) * | 2018-08-10 | 2020-02-21 | 广州小鹏汽车科技有限公司 | Vehicle safety monitoring method, device, medium and equipment |
| CN111055765A (en) * | 2019-12-18 | 2020-04-24 | 杭州电子科技大学 | Automatic alarm and help-seeking system and method for vehicle |
| CN111383362A (en) * | 2018-12-29 | 2020-07-07 | 北京骑胜科技有限公司 | Safety monitoring method and device |
| CN111667692A (en) * | 2020-06-15 | 2020-09-15 | 惠州市博实结科技有限公司 | Vehicle accident automatic processing method, vehicle-mounted terminal and vehicle |
| CN112907780A (en) * | 2021-01-14 | 2021-06-04 | 西京学院 | System and method for quickly judging and alarming vehicle accident |
| CN114040057A (en) * | 2021-12-09 | 2022-02-11 | 元准智能科技(苏州)有限公司 | Multifunctional touch alarm for vehicle and alarm method thereof |
| CN114584611A (en) * | 2022-02-22 | 2022-06-03 | 北京阿帕科蓝科技有限公司 | Method for judging whether vehicle is stolen or not based on shared electric bicycle waiting time |
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| CN105761323A (en) * | 2016-01-29 | 2016-07-13 | 北京荣之联科技股份有限公司 | Method and device for recognizing collision event based on on-board data |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109050527B (en) * | 2018-07-25 | 2020-04-10 | 浙江中科正方电子技术有限公司 | Vehicle collision detection system |
| CN109050527A (en) * | 2018-07-25 | 2018-12-21 | 浙江中科正方电子技术有限公司 | vehicle collision detecting system |
| CN110823484A (en) * | 2018-08-10 | 2020-02-21 | 广州小鹏汽车科技有限公司 | Vehicle safety monitoring method, device, medium and equipment |
| CN109188024A (en) * | 2018-09-17 | 2019-01-11 | 广西中星电子科技有限公司 | A kind of collision based on three-axis sensor is tumbled anti-theft monitor |
| CN109532739A (en) * | 2018-11-05 | 2019-03-29 | 北汽福田汽车股份有限公司 | The exceptional state alarm method of vehicle-state abnormity prompt device, vehicle, vehicle |
| CN111383362A (en) * | 2018-12-29 | 2020-07-07 | 北京骑胜科技有限公司 | Safety monitoring method and device |
| CN110021153A (en) * | 2019-04-04 | 2019-07-16 | 成都信息工程大学 | Automobile major accident alarm system and method |
| CN110775181A (en) * | 2019-10-23 | 2020-02-11 | 上海钧正网络科技有限公司 | Vehicle safety state monitoring method and device, computer equipment and storage medium |
| CN110775181B (en) * | 2019-10-23 | 2021-09-07 | 上海钧正网络科技有限公司 | Vehicle safety state monitoring method and device, computer equipment and storage medium |
| CN111055765A (en) * | 2019-12-18 | 2020-04-24 | 杭州电子科技大学 | Automatic alarm and help-seeking system and method for vehicle |
| CN111667692A (en) * | 2020-06-15 | 2020-09-15 | 惠州市博实结科技有限公司 | Vehicle accident automatic processing method, vehicle-mounted terminal and vehicle |
| CN112907780A (en) * | 2021-01-14 | 2021-06-04 | 西京学院 | System and method for quickly judging and alarming vehicle accident |
| CN114040057A (en) * | 2021-12-09 | 2022-02-11 | 元准智能科技(苏州)有限公司 | Multifunctional touch alarm for vehicle and alarm method thereof |
| CN114584611A (en) * | 2022-02-22 | 2022-06-03 | 北京阿帕科蓝科技有限公司 | Method for judging whether vehicle is stolen or not based on shared electric bicycle waiting time |
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Application publication date: 20180316 |