CN104280174B - A kind of surface of vehicle pressure detecting system and detection method - Google Patents
A kind of surface of vehicle pressure detecting system and detection method Download PDFInfo
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Abstract
The invention discloses a kind of surface of vehicle pressure detecting system and detection method, belong to vehicle and scrape scrape along antitheft detection technique field, system includes multiple sensing device, first control device, alarm device and multiple communication module；First control device is connected multiple sensing device respectively by communication module；First control device is also connected with alarm device；Multiple sensing devices lay respectively at the diverse location of surface of vehicle；Method includes: the duty of the multiple sensing device of second control device control；When sensing device detects that surface of vehicle is under pressure, sensing device sends corresponding first and controls signal to first control device；First control device sends alarm signal according to the first control signal control alarm device；Technique scheme provides the benefit that: swipe that lesser extent is micro-or car owner not at the scene when remain able to the on-the-spot evidence recorded when scraping occurs or alarm prompt carried out to car owner, it is to avoid the risk that car owner can only lose from load.
Description
Technical field
The present invention relates to vehicle and scrape scrape along antitheft detection technique field, particularly relate to a kind of surface of vehicle pressure
Detecting system and detection method.
Background technology
With car becoming increasingly popular at average family, traffic safety have also been obtained increasing attention,
For common use car, the safety in driving process and early warning mechanism are more perfect, such as adopt
The process etc. having an accident with drive recorder registration of vehicle.But (for example, exist when vehicle stops travelling
Through there being the fork road of traffic lights during vehicle parking or at vehicle), often occur
Smaller scraping accident, owing to car owner (may not such as be docked in parking lot) at the scene or damage
Degree is less, and undiscovered (when waiting traffic lights) on the spot, this type of scraping accident is typically easy to be ignored by car owner.
By the time, when finally discovery, often because can not find vehicle at that time, its loss can only be by car owner
I undertakes, and causes the adverse consequences of " damaging car costly again ".
Same, when vehicle parking, the theft target of some lawless persons, Yi Jiyi may be become
The object of a little immoral people scribble or delineation conveniently.Especially the latter, in the parking lot of some cells
Of common occurrence especially.For above-mentioned situation, prior art also lacks alarm in time and collection site card
According to technological means.
Chinese patent (CN202049052U) discloses a kind of scratch-proof device for vehicle detection, including
Frame and executing agency, described scratch-proof device for vehicle detection also includes the sensing list being fixed on described support
Unit.This scratch-proof device for vehicle detection is installing some sensors on the detection support such as gantry or cantilever,
When support is close to detected vehicle, excite the sensor drive driving circuit of control unit, and single by control
Single-chip microcomputer in Yuan outputs signal to executing agency, and executing agency i.e. stops vehicle equipment according to instruction
Motion, thus prevent scraping or vehicle of damaging.Sensor in technique scheme is arranged on support
On, and it is mainly used in preventing the scraping situation that produces in vehicle detection, with skill to be solved by this invention
Art problem is simultaneously uncorrelated.
Chinese patent (CN102745131A) discloses a kind of device preventing automobile chassis from swiping, bag
Include control unit, the alarm unit being connected with control unit and the first distance measuring sensor, described first range finding
Sensor is installed on below vehicle front bumper, and range finding direction is towards automobile front lower place；Described control unit
Automobile chassis minimum altitude, zero load and the tire pressure being pre-stored with under extreme condition is in automobile during maximum
Chassis maximum height.This extreme condition is specified maximum load and when tire pressure is in minimum of a value.Above-mentioned technology
The Main Function of scheme is to prevent the scraping of vehicle chassis and ground in vehicle travels, with institute of the present invention
Solve the technical problem that and uncorrelated.
Content of the invention
Defect according to present in prior art, a kind of surface of vehicle pressure detecting system of existing offer and detection
The technical scheme of method, specifically includes:
A kind of surface of vehicle pressure detecting system, wherein, including multiple sensing device, first control device,
Alarm device and multiple communication module；Described first control device connects many by described communication module respectively
Individual described sensing device；Described first control device is also connected with described alarm device；Multiple described sensing dresses
Put the diverse location laying respectively at surface of vehicle；
Described sensing device is used for detecting whether surface of vehicle is under pressure, and sends phase according to testing result
First answering controls signal to described first control device；Described first control device is according to described first control
The described alarm device outputting alarm signal of signal processed control；
Described first control signal includes representing the position that described sensing device is positioned at described surface of vehicle
Positional information.
Preferably, this surface of vehicle pressure detecting system, wherein, described sensing device is MEMS pressure
Sensor.
Preferably, this surface of vehicle pressure detecting system, wherein, described first control device is MCU
Controller.
Preferably, this surface of vehicle pressure detecting system, wherein, also includes second control device；Described
Second control device connects described first control device by described communication module；
Described second control device sends phase for the running status according to vehicle to described first control device
The second control instruction answered；Described first control device is according to described second control instruction control is multiple
The duty of sensing device.
Preferably, this surface of vehicle pressure detecting system, wherein, described second control device is acceleration
Sensor；The rotating speed of the wheel by the described vehicle of detection for the described acceleration transducer judges described vehicle
Running status.
Preferably, this surface of vehicle pressure detecting system, wherein, also includes image collecting device；Described
Image collecting device connects described first control device by described communication module；
Described image collecting device includes multiple image acquisition component and memory unit；Multiple described images are adopted
Collection parts connect described memory unit respectively；
Described first control device is come by sending corresponding control instruction to multiple described image acquisition component
Control the duty of described image acquisition component；Described image acquisition component is adopted according to described control instruction
Collect the view data of described surface of vehicle and be stored in described memory unit；
Described image acquisition component is micro-camera；Described micro-camera location and described sensing dress
Put location and there is default corresponding relation；Described default corresponding relation is preset at the described first control
In device processed.
Preferably, this surface of vehicle pressure detecting system, wherein, also includes multiple supply module；Each
The corresponding described supply module of described sensing device；The corresponding described power supply of described second control device
Module；The corresponding described supply module of each described image acquisition component；Described memory unit correspondence one
Individual described supply module.
Preferably, this surface of vehicle pressure detecting system, wherein, described supply module is rechargeable battery.
A kind of surface of vehicle pressure detection method, wherein, uses above-mentioned surface of vehicle pressure detecting system, institute
State detection method to specifically include:
Step 1, described second control device is according to the work of the multiple described sensing device of policy control preset
Make state；
Step 2, multiple described sensing devices start；When described sensing device detects described surface of vehicle
When being under pressure, the described sensing device being positioned at the position being under pressure sends the described accordingly first control
Signal is to described first control device；Described first control signal includes the position of corresponding described sensing device
The described positional information put；
Step 31, described first control device is according to described first control signal and described default correspondence
Relation, controls view data described in the described image acquisition device of correspondence position；Described view data
It is saved in described memory unit；
Step 32, described first control device controls described alarm device according to described first control signal and sends out
Go out alarm signal.
Preferably, this surface of vehicle pressure detection method, wherein, in described step 1, described preset
Strategy includes:
Step a1, when described second control device detects that the rotating speed of the tire of described vehicle is zero, described
Second control device judges that described vehicle is in halted state；
Step a2, described second control device sends the described accordingly second control by described communication module
Signal is to described first control device；
Step a3, described first control device, according to described second control signal, controls multiple described sensing
Device is started working.
Preferably, this surface of vehicle pressure detection method, wherein, in described step 1, described preset
Strategy includes:
Step b1, described second control device detect the tire of described vehicle when rotating, described second
Control device judges that described vehicle is in transport condition；
Step b2, described second control device sends the described accordingly second control by described communication module
Signal is to described first control device；
Step b3, described first control device, according to described second control signal, controls multiple described sensing
Device quits work.
Technique scheme provides the benefit that: swipe that lesser extent is micro-or car owner not at the scene when still
On-the-spot evidence when being so able to record that lower scraping occurs or alarm prompt is carried out to car owner, it is to avoid car owner
The risk afterwards can only lost from load, and cost is relatively low, is relatively easy realization.
Brief description
Fig. 1 is in embodiments of the invention, the structural representation of a kind of surface of vehicle pressure detecting system；
Fig. 2 is in embodiments of the invention, the schematic flow sheet of a kind of surface of vehicle pressure detection method.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as the present invention's
Limit.
The slight scraping that vehicle is produced during waiting traffic lights, and vehicle is unmanned in parking lot
When keeping an eye on produce scraping for, due to scraping itself is smaller or scraping occur when without scene evidence
Etc. reason, the scraping producing in the case of above-mentioned is compared clearly by prior art almost without corresponding means
Record and alarming processing.In embodiments of the invention, providing one can be timely in these cases
Alert and record detecting system and the method for on-the-spot evidence to car owner.
As it is shown in figure 1, embodiments of the invention provide a kind of feasible surface of vehicle pressure detecting system
System, this system includes:
1) multiple sensing devices 1；In an embodiment of the present invention, multiple sensing devices 1 are MEMS
(Micro-Electro-Mechanic System, MEMS) pressure sensor.
MEMS is microcircuit and micromechanics by integrated on chip of functional requirement, and size is generally at millimeter
Or micron order, with silicon as main material.In embodiments of the invention, MEMS pressure sensitive unit with
Cmos circuit is integrated in a chip to form a MEMS pressure sensor.MEMS pressure
Sensor sensing is to the outside pressure applying, and this external pressure can make the electric capacity in cmos circuit produce change
Change, so that the voltage in cmos circuit produces corresponding change；Then pass through MEMS pressure to pass
The zero point of sensor self adjusts and Gain tuning output voltage signal after treatment.Due to MEMS
Pressure sensor is different from common sensor, is that one incorporates integrated sensor, microactrator and micro-
A kind of novel sensor-based system of system, therefore MEMS and outside connection are two-way, MEMS
Sensor, while to outside output voltage signal, also is used for testing from external reception or adjusts
Control signal, and other control signals (such as clock control signal).
It in embodiments of the invention, is the scraping situation to surface of vehicle or to car due to need detection
The prying situation (in article in theft car) on surface, therefore above-mentioned MEMS pressure sensor needs
The surface of vehicle to be arranged on.In a practical situation, generally concentrate till the surface that vehicle may be scratched
Vehicle four sides (i.e. the front left surface of vehicle and left posterior surface, and right anterior surface and right after table
Face), therefore, in embodiments of the invention, at least need, at four above-mentioned surface locations, MEMS is installed
Pressure sensor；Further, the surface location that can be possible to be scratched at other vehicles installs additional
MEMS pressure sensor.Accordingly, because the diverse location at surface of vehicle has multiple MEMS pressure
Force snesor, each pressure sensor to external output signal when, should export simultaneously represent its position
Positional information；Further, in embodiments of the invention, MEMS pressure sensor exports to outside
Actual the first control signal being to include treated voltage signal and corresponding positional information.
In embodiments of the invention, the pressure alarm value of above-mentioned MEMS pressure sensor can be set
Fixed, heretofore described pressure alarm value is triggering MEMS pressure sensor " to outside output the
The pressure change lower limit of this operation of one control signal ".If being not provided with this pressure alarm value, then any gently
Micro-touching rests on vehicle such as birds or makes because of blowing object that quality is very light (such as plastics
Bag, discarded flexible pipe beverage external packing etc.) grazing vehicle all can cause the phonic warning of whole system, and
Generally this type of is slightly touched and is not resulted in obvious vehicle scratch, will not even cause surface of vehicle any
Destroying, pressure detecting system of the present invention is without carrying out alarm prompt to above-mentioned slight touching.Therefore,
In embodiments of the invention, the method that pressure change lower limit is set is used to arrange the situation of above-mentioned slight touching
Removing out the category of alarm triggered condition, the scope clearly to alert targeted situation is (i.e. significantly artificial
Scraping or artificial prying etc.).
2) first control device 2；In embodiments of the invention, this first control device 2 is MCU(Micro
Control Unit, micro-control unit) controller.MCU controller is by a communication module 6 respectively
It is connected with multiple MEMS pressure controllers.MCU controller is as whole surface of vehicle pressure detecting system
The control unit of system, the first control signal control entirely system sending here according to above-mentioned MEMS pressure sensor
The running status of system.
3) alarm device 3；In embodiments of the invention, this alarm device 3 is voice alarm.Voice
Alarm device is connected with MCU controller by communication module 6, for receiving what MCU controller sent
Control instruction simultaneously produces corresponding warning information.Voice alarm is built-in with microphone, further,
For MEMS silicon microphone.Voice alarm can send alerting tone by MEMS silicon microphone, with
Remind driver/car owner to note, or provide phonic warning and remind the other side to escape.
4) second control device 4；In embodiments of the invention, second control device is acceleration transducer.
Acceleration transducer 4 is connected with first control device 2 by communication module 6.Acceleration transducer passes through
The frequency that measurement vehicle tyre spins upside down is to detect the rotating speed of vehicle tyre.When acceleration transducer 4 is surveyed
Amount to tire have rotating speed when, then judge that now vehicle is in transport condition, acceleration transducer by communicate
Module sends corresponding second control signal to first control device.If now sensing device is in cut out shape
State (being sleep state in embodiments of the invention), then first control device does not sends any to sensing device
Instruction；If now sensing device is in opening, then the multiple sensing device of first control device control stops
Only work (i.e. switching to sleep state)；
Otherwise, when acceleration transducer detects vehicle tyre without rotating speed, then judge that now vehicle is in
Dead ship condition；Acceleration transducer sends the corresponding second control by communication module to first control device
Signal.If now sensing device is in sleep state, then first control device controls sensing device accordingly and cuts
Change opening into.
In sum, the effect of acceleration transducer is to be learnt by measuring the rotating speed of vehicle tyre
The current operating conditions of vehicle, the subsequently current operating conditions according to vehicle, will by first control device
Sensing device switches to corresponding mode of operation (sleep pattern or open mode).
In embodiments of the invention, acceleration transducer can include multiple, i.e. can be the four of vehicle
Tire location is all correspondingly arranged an acceleration transducer.
5) image collecting device 5；In embodiments of the invention, image collecting device 5 passes through communication module
6 are connected to first control device 2；
Image collecting device 5 includes image acquisition component 51 and memory unit 52, wherein image acquisition part
Part 51 connects memory unit 52, and connects first control device 2 by communication module；The reality of the present invention
Executing in example, image acquisition component 51 is the multiple micro-cameras being arranged on surface of vehicle.Residing for micro-camera
The position of surface of vehicle and MEMS pressure sensor residing for surface of vehicle position between exist pre-
If corresponding relation.In other words, in embodiments of the invention, a micro-camera and one can be used
The position of MEMS pressure sensor method to set up one to one, it would however also be possible to employ micro-camera and homonymy
The corresponding method to set up in position of multiple MEMS pressure sensor (i.e. the front left surface of vehicle is provided with
One micro-camera, corresponding to being arranged on multiple MEMS pressure sensor of the front left surface of vehicle, with
This analogizes).Above-mentioned corresponding relation is preset in MCU controller.
In embodiments of the invention, the communication module mentioned in above-mentioned surface of vehicle pressure detecting system is
RF(Radio Frequency, radio frequency) chip.I.e. acceleration transducer and multiple MEMS pressure passes
Sensor all connects MCU controller by RF chip；MCU controller is connected respectively by RF chip
Micro-camera and voice alarm.
Owing between MEMS pressure sensor and MCU controller being two-way communication (i.e. MEMS
Pressure sensor sends the first control signal by communication module to MCU controller, and by communication
Module receives the various control instructions from MCU controller), it therefore, is positioned at MEMS pressure sensing
Communication module between device and MCU controller is bi-directional communication modules, is RF transceiver module, therefore
It is physically located in MCU controller end and the RF chip of MEMS pressure sensor end is two-way communication
RF transceiving chip.Remaining communication module is unidirectional RF chip；Specifically:
The RF chip being positioned at acceleration transducer end is RF transmitting chip, is positioned at MCU control accordingly
The RF chip of device end is that RF receives chip；
The RF chip being positioned at MCU controller end is RF transmitting chip, is positioned at voice alarm accordingly
The RF chip of end and micro-camera end is that RF receives chip.
In other embodiments of the present invention, above-mentioned communication module also can be bluetooth communication, or its
He can be used for carrying out the communication module of Wireless Data Transmission；The setting of its transceiver module structure and above-mentioned enforcement
RF chip in example is similar to.
In embodiments of the invention, above-mentioned surface of vehicle pressure detecting system, its power supply is by multiple power supply moulds
Block (not shown) realizes, specifically:
The corresponding supply module of each MEMS pressure sensor；
The corresponding supply module of each acceleration transducer；
The corresponding supply module of each micro-camera；
The corresponding supply module of memory unit.
Owing to MCU controller can be integrated in automotive interior, its power supply can be by the electric power of automobile itself
System realizes, does not therefore deliberately separately set a power supply in an embodiment of the present invention on MCU controller
Module.
In embodiments of the invention, above-mentioned supply module can be rechargeable battery.Rechargeable battery can have
Different implementations, for example, use on acceleration transducer and can be converted into the kinetic energy that tire rotates
The rechargeable battery of electric energy；The MEMS pressure sensor being arranged on surface of vehicle and micro-camera are adopted
With the solar energy charging battery etc. that can convert solar energy into electrical energy.In order to meet pressure sensor, micro-
The needs of the microminiature design of type camera and acceleration transducer, above-mentioned rechargeable battery can be coin shape
Battery.The implementation of above-mentioned rechargeable battery function is carried out other without prejudice to the goal of the invention of the present invention and
The modification of spirit and replacement are included in protection scope of the present invention.
As in figure 2 it is shown, in embodiments of the invention, a kind of surface of vehicle pressure detection method, use such as
Surface of vehicle pressure detecting system shown in mentioned above and Figure of description 1, detection method is specifically wrapped
Include:
Step 1, acceleration transducer is judged the operation of now vehicle by detecting the rotating speed of vehicle tyre
State；
When acceleration transducer detects that vehicle tyre has rotating speed, go to step 1a；
When acceleration transducer detects that vehicle tyre does not has rotating speed, go to step 1b；
Step 1a, acceleration transducer sends one and controls signal to MCU controller accordingly；
Step 2a, MCU controller controls multiple MEMS pressure sensor according to this control signal and stops
(if now MEMS pressure sensor is not in working order, then MCU controller is not to MEMS in work
Pressure sensor controls accordingly)；It is then returned to step 1；
Step 1b, acceleration transducer sends one and controls signal to MCU controller accordingly；
Step 2b, MCU controller controls multiple MEMS pressure sensor according to this control signal and starts
(if now MEMS pressure sensor is already at duty, then MCU controller is not right in work
MEMS pressure sensor controls accordingly)；Then switch into step 2；
Step 2, when MEMS pressure sensor detects that surface of vehicle is scratched or by prying (i.e. car
The pressure change on surface) when, MEMS pressure sensor to MCU controller send one corresponding
Control signal；Control signal includes detecting the corresponding of the MEMS pressure sensor that surface pressing changes
Positional information；
Step 31, MCU controller controls speech transducer according to this control signal and sends alarm signal；
Step 32, MCU controller is according to the positional information in this control signal, on control relevant position
Image acquisition component (i.e. micro-camera) gather view data；And turn to step 4；
Step 4, after image acquisition component collects view data, sends this view data to storage part
Part preserves.
The foregoing is only preferred embodiment of the present invention, not thereby limit embodiments of the present invention and
Protection domain, to those skilled in the art, it should can appreciate that all utilization description of the invention
And the scheme that the equivalent done by diagramatic content is obtained with obvious change, all should comprise
Within the scope of the present invention.
Claims (10)
1. a surface of vehicle pressure detecting system, it is characterised in that include multiple sensing device, first
Control device, alarm device and multiple communication module；Described first control device is by described communication module
Connect multiple described sensing device respectively；Described first control device is also connected with described alarm device；Multiple
Described sensing device lays respectively at the diverse location of surface of vehicle；
Described sensing device is used for detecting whether surface of vehicle is under pressure, and sends phase according to testing result
First answering controls signal to described first control device；Described first control device is according to described first control
The described alarm device outputting alarm signal of signal processed control；
Described first control signal includes representing the position that described sensing device is positioned at described surface of vehicle
Positional information；
Also include second control device；Described second control device connects described the by described communication module
One control device；
Described second control device sends phase for the running status according to vehicle to described first control device
The second control instruction answered；Described first control device is according to described second control instruction control is multiple
The duty of sensing device.
2. surface of vehicle pressure detecting system as claimed in claim 1, it is characterised in that described sensing
Device is MEMS pressure sensor.
3. surface of vehicle pressure detecting system as claimed in claim 1, it is characterised in that described first
Control device is MCU controller.
4. surface of vehicle pressure detecting system as claimed in claim 1, it is characterised in that described second
Control device is acceleration transducer；Described acceleration transducer is turned by the wheel of the described vehicle of detection
Speed judges the running status of described vehicle.
5. surface of vehicle pressure detecting system as claimed in claim 1, it is characterised in that also include figure
As harvester；Described image collecting device connects described first control device by described communication module；
Described image collecting device includes multiple image acquisition component and memory unit；Multiple described images are adopted
Collection parts connect described memory unit respectively；
Described first control device is come by sending corresponding control instruction to multiple described image acquisition component
Control the duty of described image acquisition component；Described image acquisition component is adopted according to described control instruction
Collect the view data of described surface of vehicle and be stored in described memory unit；
Described image acquisition component is micro-camera；Described micro-camera location and described sensing dress
Put location and there is default corresponding relation；Described default corresponding relation is preset at the described first control
In device processed.
6. surface of vehicle pressure detecting system as claimed in claim 5, it is characterised in that also include many
Individual supply module；The corresponding described supply module of each described sensing device；Described second control device
A corresponding described supply module；The corresponding described supply module of each described image acquisition component；Institute
State the corresponding described supply module of memory unit.
7. surface of vehicle pressure detecting system as claimed in claim 6, it is characterised in that described power supply
Module is rechargeable battery.
8. a surface of vehicle pressure detection method, it is characterised in that use as claimed in claim 7
Surface of vehicle pressure detecting system, described detection method specifically includes:
Step 1, described second control device is according to the work of the multiple described sensing device of policy control preset
Make state；
Step 2, multiple described sensing devices start；When described sensing device detects described surface of vehicle
When being under pressure, the described sensing device being positioned at the position being under pressure sends the described accordingly first control
Signal is to described first control device；Described first control signal includes the position of corresponding described sensing device
The described positional information put；
Step 31, described first control device is according to described first control signal and described default correspondence
Relation, controls view data described in the described image acquisition device of correspondence position；Described view data
It is saved in described memory unit；
Step 32, described first control device controls described alarm device according to described first control signal and sends out
Go out alarm signal.
9. surface of vehicle pressure detection method as claimed in claim 8, it is characterised in that described step
In 1, described default strategy includes:
Step a1, when described second control device detects that the rotating speed of the tire of described vehicle is zero, described
Second control device judges that described vehicle is in halted state；
Step a2, described second control device sends the described accordingly second control by described communication module
Signal is to described first control device；
Step a3, described first control device, according to described second control signal, controls multiple described sensing
Device is started working.
10. surface of vehicle pressure detection method as claimed in claim 8, it is characterised in that described step
In rapid 1, described default strategy includes:
Step b1, described second control device detect the tire of described vehicle when rotating, described second
Control device judges that described vehicle is in transport condition；
Step b2, described second control device sends the described accordingly second control by described communication module
Signal is to described first control device；
Step b3, described first control device, according to described second control signal, controls multiple described sensing
Device quits work.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108045179B (en) * | 2017-10-27 | 2020-04-07 | 中国第一汽车股份有限公司 | Tire pressure monitoring system fault judgment method |
| CN109922136A (en) * | 2019-01-25 | 2019-06-21 | 南京北斗城际在线信息股份有限公司北京分公司 | Vehicle based on NB-IoT is by scratch alarm method |
| CN109677324B (en) * | 2019-01-25 | 2021-01-29 | 柳笛科技(北京)有限公司 | Parking vehicle collision alarm method based on NB-IoT technology |
| CN110398377A (en) * | 2019-07-31 | 2019-11-01 | 广州小鹏汽车科技有限公司 | Information acquisition method and device, car-mounted terminal, vehicle and storage medium |
| CN110971219A (en) * | 2019-12-31 | 2020-04-07 | 歌尔微电子有限公司 | Pressure sensor, switch circuit thereof, clock control method and clock control device |
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