CN110095225A - A kind of glass breaking detection device and method - Google Patents
A kind of glass breaking detection device and method Download PDFInfo
- Publication number
- CN110095225A CN110095225A CN201910330576.7A CN201910330576A CN110095225A CN 110095225 A CN110095225 A CN 110095225A CN 201910330576 A CN201910330576 A CN 201910330576A CN 110095225 A CN110095225 A CN 110095225A
- Authority
- CN
- China
- Prior art keywords
- glass breaking
- detection device
- pressure sensor
- breaking detection
- mems microphone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
-
- 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
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/003—Mems transducers or their use
Abstract
The present invention provides a kind of glass breaking detection devices, including the encapsulating housing with accommodating space, the MEMS microphone, pressure sensor, asic chip and the dsp chip being electrically connected with the MEMS microphone and the pressure sensor that are installed in the accommodating space, the MEMS microphone includes the leakage hole of back cavity and the connection back cavity and the accommodating space, the encapsulating housing is equipped with the sound hole for being connected to the back cavity, and sound passes through the leakage hole from the sound hole and reaches the pressure sensor.The present invention also provides a kind of glass breaking detection method, glass breaking detection device of the invention and method can reduce energy consumption, and be able to achieve the accurate detection of glass breaking.
Description
[technical field]
The present invention relates to glass breaking detection field more particularly to a kind of glass breaking detection devices and method.
[background technique]
It can be made a sound when indoor perhaps interior glass is tapped broken and indoor or interior air pressure is caused to become
Change.Existing glass breaking detection method is general are as follows: processor receives the voice signal and pressure sensor that microphone detection arrives
The air pressure signal detected judges whether glass is crushed according to voice signal and air pressure signal, and processor and pressure sensor need
It continues working.But glass breaking be the small probability time, if processor and pressure sensor continue working, caused by power consumption
It is larger.The method that pressure sensor is waken up when according to glass breaking, then pressure sensor cannot collect complete air pressure and become
Change data, detection is caused to fail.
Therefore, it is necessary to provide a kind of reduction power consumption and be able to achieve the glass breaking detection device and method accurately detected.
[summary of the invention]
The purpose of the present invention is to provide a kind of glass breaking detection device and methods, to reduce power consumption and can accurately detect
To glass breaking.
Technical scheme is as follows:
A kind of glass breaking detection device, the glass breaking detection device include the encapsulating housing with accommodating space,
Be installed on MEMS microphone in the accommodating space, pressure sensor, asic chip and with the MEMS microphone and institute
The dsp chip of pressure sensor electrical connection is stated, the MEMS microphone includes back cavity and the connection back cavity and the receiving
The leakage hole in space, the encapsulating housing are equipped with the sound hole for being connected to the back cavity, and sound passes through described let out from the sound hole
Leak reaches the pressure sensor.
Preferably, the asic chip include the first asic chip being electrically connected with the MEMS microphone and with the pressure
Second asic chip of force snesor electrical connection.
Preferably, first asic chip and second asic chip are stacked in the accommodating space.
Preferably, the encapsulating housing includes that substrate and the substrate enclose the shell for being set as the accommodating space.
Preferably, the MEMS microphone is installed on the substrate, and the sound hole is set on the substrate.
Preferably, the substrate is circuit board.
Preferably, the glass breaking detection device further includes mould group plate, and the dsp chip is installed on the mould group plate
On.
The present invention also provides a kind of glass breaking detection methods, applied to above-mentioned detection device, which comprises
When the MEMS microphone detects voice signal, the pressure sensor is waken up by the dsp chip；
The air pressure change data that the pressure sensor will test are sent to the dsp chip；
The dsp chip judges whether glass is crushed according to the air pressure change data；
If detecting glass breaking, the dsp chip sends a signal to alarm device.
The beneficial effects of the present invention are: there is the encapsulating housing of accommodating space by being arranged, by MEMS microphone, pressure
Sensor is set in encapsulating housing, and MEMS microphone includes back cavity and the leakage hole for being connected to back cavity and accommodating space, encapsulation
Shell is equipped with the sound hole of connection back cavity, and sound passes through leakage hole from sound hole and reaches pressure sensor, so that sound be made to reach
The time that the time of pressure sensor is later than arrival MEMS microphone passes through dsp chip when MEMS microphone detects sound
Wake up pressure sensor, to can detecte complete air pressure change data after waking up pressure sensor, dsp chip according to
The accurate detection of glass breaking can be realized in air pressure change data, and reduces the energy consumption of glass breaking detection device.
[Detailed description of the invention]
Fig. 1 is the schematic diagram of glass breaking detection device provided in an embodiment of the present invention；
Fig. 2 is glass breaking detection method flow chart provided in an embodiment of the present invention.
In figure, 1, encapsulating housing；11, accommodating space；12, sound hole；13, substrate；14, shell；2, MEMS microphone；
21, back cavity；22, leakage hole；3, pressure sensor；4, asic chip；41, the first asic chip；42, the second asic chip；5,
Dsp chip；6, mould group plate.
[specific embodiment]
The invention will be further described with embodiment with reference to the accompanying drawing.
It should be noted that in the embodiment of the present invention institute it is directional instruction (such as up, down, left, right, before and after, top,
Bottom ...) it is only used for explaining in the relative positional relationship etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
It should also be noted that, when an element is referred to as being " fixed " or " disposed " on another element, which can
Directly on the other element or may be simultaneously present centering elements.When an element referred to as " connects " another yuan
Part, it, which can be, is directly connected to another element or may be simultaneously present centering elements.
As shown in Figure 1, glass breaking detection device provided in an embodiment of the present invention can be placed near detection glass, example
Such as, it is placed on the frame of vehicle window or door and window.Glass breaking detection device include the encapsulating housing 1 with accommodating space 11,
Be installed on MEMS microphone 2 in accommodating space 11, pressure sensor 3, asic chip 4 and with MEMS microphone 2 and pressure
The dsp chip 5 that sensor 3 is electrically connected, MEMS microphone 2 include back cavity 21 and the leakage for being connected to back cavity 21 and accommodating space 11
Mouth 22, encapsulating housing 1 are equipped with the sound hole 12 of connection back cavity 21, and sound passes through leakage hole 22 from sound hole 12 and reaches pressure sensing
Device 3, so that the time for making sound reach pressure sensor 3 is later than the time for reaching MEMS microphone 2.When MEMS microphone 2 does not have
When detecting sound, pressure sensor 3 in a dormant state, when MEMS microphone 2 detects voice signal, passes through DSP
Chip 5 wakes up pressure sensor 3, and the delay time that voice signal reaches pressure sensor 3 is more than or equal to pressure sensor 3
Wakeup time, voice signal causes the air pressure change in accommodating space 11, so that it is complete to can detecte pressure sensor 3
Air pressure change data, dsp chip 5 can accurately detect whether glass is crushed according to air pressure change data, if detecting glass
Glass is crushed sound and then sends a signal to alarm device, and the design can reduce plant energy consumption.
In one embodiment, asic chip 4 include the first asic chip 41 being electrically connected with MEMS microphone 2 and with pressure
The second asic chip 42 that force snesor 3 is electrically connected, the first asic chip 41 are used to voice signal being converted to electric signal, and right
Electric signal is filtered noise reduction process, and the second asic chip 42 is used to being converted to pressure signal into electric signal and carry out to electric signal
Filter noise reduction process.Preferably, the first asic chip 41 and the second asic chip 42 are stacked in accommodating space 11, to save sky
Between.
In one embodiment, encapsulating housing 1 includes that substrate 13 and substrate 13 enclose the shell 14 for being set as accommodating space 11.
MEMS microphone 2 is installed on substrate 13, and sound hole 12 is set on substrate 13.Preferably, substrate 13 is circuit board.
Preferably, glass breaking detection device further includes mould group plate 6, and dsp chip 5 is installed on mould group plate 6.
As shown in Fig. 2, glass breaking detection method provided in an embodiment of the present invention, applied to above-mentioned detection device, side
Method includes:
Step S101: when the MEMS microphone detects voice signal, the pressure is waken up by the dsp chip and is passed
Sensor；
Step S102: the air pressure change data that the pressure sensor will test are sent to the dsp chip.
Specifically, voice signal causes the air pressure in accommodating space to change, pressure sensor can detecte out air pressure
Delta data.
Step S103: the dsp chip judges whether glass is crushed according to the air pressure change data.
Specifically, due to detecting that sound postpones to pressure sensor having time is waken up from MEMS microphone, and sound is believed
Number arrival pressure sensor, which reaches MEMS microphone relative to voice signal, delay, therefore pressure sensor can detecte
Whole air pressure change data.
In one embodiment, dsp chip tranmitting data register signal is to start pressure sensor.
Step S104: if detecting glass breaking, the dsp chip sends a signal to alarm device.
In one embodiment, when the air pressure change data that pressure sensor detects are located in the data area of setting, DSP
Chip sends a signal to alarm device, and alarm device issues warning note, such as shines or make a sound prompt.Dsp chip
It can also be connect with mobile terminal communication, prompt information is sent in glass breaking to mobile terminal, to prompt user.
In above-described embodiment, when MEMS microphone detects voice signal, pressure sensor is waken up by dsp chip；Pressure
The air pressure change data that force snesor will test are sent to the dsp chip；Dsp chip judges glass according to air pressure change data
Whether glass is crushed, to save system energy consumption, and pressure sensor can be made to detect complete air pressure change data, accurate to examine
Measure whether glass is crushed.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to protection model of the invention
It encloses.
Claims (8)
1. a kind of glass breaking detection device, which is characterized in that the glass breaking detection device includes having accommodating space
Encapsulating housing, the MEMS microphone being installed in the accommodating space, pressure sensor, asic chip and with the MEMS
The dsp chip of microphone and pressure sensor electrical connection, the MEMS microphone include back cavity and the connection back cavity
With the leakage hole of the accommodating space, the encapsulating housing is equipped with the sound hole for being connected to the back cavity, and sound is from the sound hole
The pressure sensor is reached across the leakage hole.
2. glass breaking detection device according to claim 1, which is characterized in that the asic chip include with it is described
First asic chip of MEMS microphone electrical connection and the second asic chip being electrically connected with the pressure sensor.
3. glass breaking detection device according to claim 2, which is characterized in that first asic chip and described
Two asic chips are stacked in the accommodating space.
4. glass breaking detection device according to claim 1, which is characterized in that the encapsulating housing include substrate, with
The substrate encloses the shell for being set as the accommodating space.
5. glass breaking detection device according to claim 4, which is characterized in that the MEMS microphone is installed on described
On substrate, the sound hole is set on the substrate.
6. glass breaking detection device according to claim 5, which is characterized in that the substrate is circuit board.
7. glass breaking detection device according to claim 1, which is characterized in that the glass breaking detection device is also wrapped
Mould group plate is included, the dsp chip is installed on the mould group plate.
8. a kind of glass breaking detection method is applied to such as described in any item detection devices of claim 1-7, feature and exists
In, which comprises
When the MEMS microphone detects voice signal, the pressure sensor is waken up by the dsp chip；
The air pressure change data that the pressure sensor will test are sent to the dsp chip；
The dsp chip judges whether glass is crushed according to the air pressure change data；
If detecting glass breaking, the dsp chip sends a signal to alarm device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330576.7A CN110095225A (en) | 2019-04-23 | 2019-04-23 | A kind of glass breaking detection device and method |
| PCT/CN2019/086251 WO2020215381A1 (en) | 2019-04-23 | 2019-05-09 | Glass breakage detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330576.7A CN110095225A (en) | 2019-04-23 | 2019-04-23 | A kind of glass breaking detection device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110095225A true CN110095225A (en) | 2019-08-06 |
Family
ID=67445621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910330576.7A Pending CN110095225A (en) | 2019-04-23 | 2019-04-23 | A kind of glass breaking detection device and method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110095225A (en) |
| WO (1) | WO2020215381A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215381A1 (en) * | 2019-04-23 | 2020-10-29 | 瑞声声学科技(深圳)有限公司 | Glass breakage detection device and method |
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|---|---|---|---|---|
| WO2007015593A1 (en) * | 2005-08-02 | 2007-02-08 | Bse Co., Ltd | Silicon based condenser microphone and packaging method for the same |
| CN102595294A (en) * | 2012-03-06 | 2012-07-18 | 歌尔声学股份有限公司 | Micro-electro-mechanical-system (MEMS) microphone |
| CN103888587A (en) * | 2012-12-19 | 2014-06-25 | 中国移动通信集团公司 | Terminal awakening method, DSP chip, and terminal |
| CN204125162U (en) * | 2013-07-31 | 2015-01-28 | 意法半导体股份有限公司 | Packaging and electronic equipment |
| CN104902411A (en) * | 2014-03-04 | 2015-09-09 | 罗伯特·博世有限公司 | Component having a microphone and media sensor function |
| CN208079318U (en) * | 2018-02-06 | 2018-11-09 | 万魔声学科技有限公司 | Mobile device and its microphone apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9460732B2 (en) * | 2013-02-13 | 2016-10-04 | Analog Devices, Inc. | Signal source separation |
| CN105150998A (en) * | 2015-08-27 | 2015-12-16 | 苏州翼凯通信科技有限公司 | Vehicle-mounted intelligent glass breakage anti-theft alarm device and control method thereof |
| CN205566635U (en) * | 2016-03-16 | 2016-09-07 | 歌尔股份有限公司 | MEMS microphone |
| CN110095225A (en) * | 2019-04-23 | 2019-08-06 | 瑞声声学科技(深圳)有限公司 | A kind of glass breaking detection device and method |
-
2019
- 2019-04-23 CN CN201910330576.7A patent/CN110095225A/en active Pending
- 2019-05-09 WO PCT/CN2019/086251 patent/WO2020215381A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007015593A1 (en) * | 2005-08-02 | 2007-02-08 | Bse Co., Ltd | Silicon based condenser microphone and packaging method for the same |
| CN102595294A (en) * | 2012-03-06 | 2012-07-18 | 歌尔声学股份有限公司 | Micro-electro-mechanical-system (MEMS) microphone |
| CN103888587A (en) * | 2012-12-19 | 2014-06-25 | 中国移动通信集团公司 | Terminal awakening method, DSP chip, and terminal |
| CN204125162U (en) * | 2013-07-31 | 2015-01-28 | 意法半导体股份有限公司 | Packaging and electronic equipment |
| CN104902411A (en) * | 2014-03-04 | 2015-09-09 | 罗伯特·博世有限公司 | Component having a microphone and media sensor function |
| CN208079318U (en) * | 2018-02-06 | 2018-11-09 | 万魔声学科技有限公司 | Mobile device and its microphone apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215381A1 (en) * | 2019-04-23 | 2020-10-29 | 瑞声声学科技(深圳)有限公司 | Glass breakage detection device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020215381A1 (en) | 2020-10-29 |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190806 |