CN204348004U - A kind of intrusion detector - Google Patents
A kind of intrusion detector Download PDFInfo
- Publication number
- CN204348004U CN204348004U CN201520022891.0U CN201520022891U CN204348004U CN 204348004 U CN204348004 U CN 204348004U CN 201520022891 U CN201520022891 U CN 201520022891U CN 204348004 U CN204348004 U CN 204348004U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- intrusion detector
- printed circuit
- piezoelectric membrane
- membrane sheet
- 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.)
- Active
Links
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
The utility model discloses a kind of intrusion detector, comprising: housing, be arranged at the printed circuit board in housing, the piezoelectric membrane sheet be electrically connected with printed circuit board, be positioned at the upper cover be connected above printed circuit board and with housing.In intrusion detector disclosed in the utility model, piezoelectric membrane sheet is as sensing element, and because piezoelectric membrane sheet is durable compared with mechanical vibrator, piezoelectric membrane sheet can stand the bending and vibration of millions of times, thus improve the stability of sensing element, and then improve the stability of this intrusion detector; Meanwhile, because piezoelectric membrane sheet is passive sensor, then the sensing element of this intrusion detector is without the need to power supply, and this intrusion detector possesses higher sensitivity.
Description
Technical field
The utility model relates to intrusion detection technical field, more particularly, relates to a kind of intrusion detector.
Background technology
Intrusion detector is the change of the fore device in intrusion alarm system, the various physical quantitys such as the vibration at perception scene, and converts it to be suitable for transmitting electric signal according to certain rule.
Intrusion detector primarily of mechanical type magnetoelectricity wave detector as sensing element, mechanical type magnetoelectricity wave detector is laid in monitoring surface, mechanical type magnetoelectricity wave detector converts electric signal to the vibrations of monitoring surface and by cable, electric signal is sent into signal processor, this signal of signal processor processes.
But the parts such as the mechanical vibrator of mechanical type magnetoelectricity wave detector are more aging, and the growth along with service time has demagnetization phenomenon, causes the less stable of sensing element, makes the less stable of this intrusion detector.
In addition, the volume and weight of mechanical type magnetoelectricity wave detector is all comparatively large, causes the volume of whole intrusion detector and quality also larger.
In sum, how improving the stability of sensing element, to improve the stability of intrusion detector, is current those skilled in the art's problem demanding prompt solution.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of intrusion detector, improves the stability of its sensing element, to improve the stability of this intrusion detector.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of intrusion detector, comprising: housing, is arranged at the printed circuit board in described housing, the piezoelectric membrane sheet be electrically connected with described printed circuit board, be positioned at the upper cover be connected above described printed circuit board and with described housing.
Preferably, described piezoelectric membrane sheet comprises: piezoelectric membrane body, the mass be connected with the bottom of described piezoelectric membrane body.
Preferably, described piezoelectric membrane sheet is parallel with described printed circuit board.
Preferably, described piezoelectric membrane sheet realizes being electrically connected by grafting with described printed circuit board.
Preferably, described piezoelectric membrane sheet is provided with contact pin, and described printed circuit board is provided with the through hole coordinated with described contact pin.
Preferably, described printed circuit board and described housing removably connect; Described upper cover and described housing removably connect, and are tightly connected by waterproof washer between described upper cover and described housing.
Preferably, described printed circuit board is provided with jack, and described housing is provided with the fixed leg coordinated with described jack; Described upper cover is threaded connection part with described housing and is removably connected.
Preferably, the sidewall that two of described housing are relative is provided with cable hole, and described cable hole place is provided with water joint.
Preferably, described housing is provided with the fixed orifice for being fixed on installation site.
Preferably, described printed circuit board is provided with breaking-proof switch.
The detection principle of the intrusion detector that the utility model provides is the change of: piezoelectric membrane sheet perception environment residing for it, and sends corresponding signal, and this Signal transmissions, to printed circuit board, sends relevant data processor to by printed circuit board.
In the intrusion detector that the utility model provides, piezoelectric membrane sheet is as sensing element, and because piezoelectric membrane sheet is durable compared with mechanical vibrator, piezoelectric membrane sheet can stand the bending and vibration of millions of times, thus improve the stability of sensing element, and then improve the stability of this intrusion detector.
Meanwhile, the intrusion detector that the utility model provides, adopts piezoelectric membrane sheet as sensing element, and because piezoelectric membrane sheet is passive sensor, then the sensing element of this intrusion detector is without the need to power supply, and possesses higher sensitivity.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of the intrusion detector middle shell that Fig. 1 provides for the utility model embodiment;
The structural representation of printed circuit board in the intrusion detector that Fig. 2 provides for the utility model embodiment;
The structural representation of piezoelectric membrane sheet in the intrusion detector that Fig. 3 provides for the utility model embodiment.
In upper Fig. 1-3:
1 be housing, 11 be connecting hole, 12 be fixed leg, 13 be cable hole, 14 be fixed orifice, 2 be printed circuit board, 21 be through hole, 22 be jack, 3 be piezoelectric membrane sheet, 31 be contact pin, 32 be piezoelectric membrane body, 33 for mass.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As Figure 1-3, the intrusion detector that the utility model embodiment provides, comprising: housing 1, is arranged at the printed circuit board 2 in housing 1, the piezoelectric membrane sheet 3 be electrically connected with printed circuit board 2, is positioned at the upper cover be connected above printed circuit board 2 and with housing 1.
The detection principle of above-mentioned intrusion detector is the change of: piezoelectric membrane sheet 3 perception environment residing for it, and sends corresponding signal, and this Signal transmissions, to printed circuit board 2, sends relevant data processor to by printed circuit board 2.
In the intrusion detector that the utility model embodiment provides, piezoelectric membrane sheet 3 is as sensing element, because piezoelectric membrane sheet 3 is durable compared with mechanical vibrator, piezoelectric membrane sheet 3 can stand the bending and vibration of millions of times, thus improve the stability of sensing element, and then improve the stability of this intrusion detector.
Meanwhile, the intrusion detector that the utility model embodiment provides, adopts piezoelectric membrane sheet 3 as sensing element, and because piezoelectric membrane sheet 3 is passive sensor, then the sensing element of this intrusion detector is without the need to power supply, and possesses higher sensitivity.
Simultaneously, the intrusion detector that the utility model embodiment provides, adopts piezoelectric membrane sheet 3 as sensing element, because piezoelectric membrane sheet 3 has the advantages that volume is little, quality is light, particularly comparatively mechanical vibrator is compared, thus effectively reduces volume and the quality of whole intrusion detector.
In above-mentioned intrusion detector, piezoelectric membrane sheet 3 mainly adopts Kynoar (PVDF) polymeric material, polyvinylidene fluoride polymer material is after the series of processes such as film forming, stretching, thermal treatment, cutting is required form, form positive and negative electrode, final formation piezoelectric membrane sheet 3.The both positive and negative polarity of piezoelectric membrane sheet 3 is fixedly connected with the both positive and negative polarity of printed circuit board 2.The quantity of electric charge that printed circuit board 2 gathers and pre-service piezoelectric membrane sheet 3 exports, concrete, printed circuit board 2 comprises the funtion parts such as charge amplifier, bandpass filter, anti-power filter and multilevel voltage amplifier.For the concrete structure of printed circuit board 2, be well known to those skilled in the art, repeat no more herein.
For the ease of installing, prioritizing selection printed circuit board 2 is arranged at the inner tip of housing 1.Certainly, printed circuit board 2 also can be selected to be arranged at middle part in housing 1.
In order to improve the response intensity of piezoelectric membrane sheet 3, in above-mentioned intrusion detector, piezoelectric membrane sheet 3 comprises: piezoelectric membrane body 32, the mass 33 be connected with the bottom of piezoelectric membrane body 32.Like this, increase effectively the deformation that piezoelectric membrane sheet 3 produces when being hit, thus improve response intensity.Preferably, mass 33 is derby.For the quality size of mass 33, need to set according to actual needs, the utility model embodiment does not limit this.
Preferably, in above-mentioned intrusion detector, piezoelectric membrane sheet 3 is parallel to printed circuit board 2.Like this, be convenient to piezoelectric membrane sheet 3 and be electrically connected with printed circuit board 2, meanwhile, be also convenient to piezoelectric membrane sheet 3 and monitor.
In above-mentioned intrusion detector, the size and shape of piezoelectric membrane sheet 3, can be arranged according to actual needs.Preferably, piezoelectric membrane sheet 3 is rectangle, and certainly, also can be square or other are irregularly shaped.
Realize printed circuit board 2 and the electrical connection of piezoelectric membrane sheet 3, there is various ways, such as wire connects, and electric mortiser connects.Conveniently mount and dismount, prioritizing selection electric mortiser connects, concrete, and piezoelectric membrane sheet 3 realizes being electrically connected by grafting with printed circuit board 2.
Also there is various structures in piezoelectric membrane sheet 3 and printed circuit board 2 grafting, such as, piezoelectric membrane sheet 3 is provided with contact pin 31, and printed circuit board 2 is provided with the through hole 21 coordinated with contact pin 31; Or piezoelectric membrane sheet 3 is provided with grafting through hole, printed circuit board 2 is provided with the grafting contact pin coordinated with spliced eye.For the ease of arrange, prioritizing selection the former.Be understandable that, the number of contact pin 31 is two, and one is positive pole contact pin, and one is negative pole contact pin, and in like manner, the number of through hole 21 is also two, and one is positive pole through hole, and one is negative pole through hole.
It should be noted that, if piezoelectric membrane sheet 3 comprises: piezoelectric membrane body 32 and the mass 33 be connected with the bottom of piezoelectric membrane body 32, then contact pin 31 is located on piezoelectric membrane body 32.
For the ease of installation and removal, in above-mentioned intrusion detector, printed circuit board 2 and housing 1 removably connect; Upper cover and housing 1 removably connect, and are tightly connected by waterproof washer between upper cover and housing 1.
Realize printed circuit board 2 to removably connect with housing 1, there is various ways, such as, by web member connection or clamping etc.For the ease of installing, prioritizing selection printed circuit board 2 is provided with jack 22, and housing 1 is provided with the fixed leg 12 coordinated with jack 22.Preferably, the number of jack 22 is two, and lays respectively at the two ends of printed circuit board 2.Certainly, jack 22 also can be selected for multiple, as long as ensure printed circuit board 2 uniform stressed.In actual application, fixed leg 12 also can be selected to be located on printed circuit board 2, jack 22 to be located on housing 1, to be not limited to above-mentioned situation; Or select other snap fit, such as buckle clamping.
Realize upper cover and housing 1 removably connects, also there is various structures, such as, connected by web member or clamping etc.In order to ensure installation reliability, prioritizing selection, upper cover is threaded connection part with housing 1 and is removably connected.Preferably, screw connection is screw.Concrete, housing 1 is provided with connecting hole 11, and upper cover is provided with the mounting hole corresponding with connecting hole 11.For the number of connecting hole 11, the utility model embodiment does not limit this, arranges according to actual needs, and such as connecting hole 11 is two, three or four.
In actual application, usually need to use multiple intrusion detector, multiple intrusion detector can be connected also can be in parallel.For the ease of the connection of adjacent two intrusion detectors, the sidewall that two of prioritizing selection housing 1 are relative is provided with cable hole 13.For the size of cable hole 13, need the thickness according to connecting wire to arrange, the utility model embodiment does not limit this.Further, cable hole 13 coaxial line on two sidewalls.In order to avoid entering water from cable hole 13 place, prioritizing selection cable hole 13 place is provided with water joint.Be understandable that, this water joint has the passage passed for connection wire, and the hole wall of water joint and cable hole 13 is tightly connected.Further, water joint is nylon water joint.
Above-mentioned intrusion detector is fixed on installation site by web member, also can clamping and installation site.Wherein, installation site is certain position of the entity circumferences such as brick wall, fence, mixing tracery wall.In order to simplify installation, expand range of application, this intrusion detector of prioritizing selection is fixed on installation site by web member.Concrete, housing 1 is provided with the fixed orifice 14 for being fixed on installation site.For number and the size of fixed orifice 14, arrange according to actual needs.
Further, in above-mentioned intrusion detector, printed circuit board 2 is provided with breaking-proof switch.Like this, make this intrusion detector have self-protection function, improve reliability.
Preferably, in above-mentioned intrusion detector, housing 1 is aluminum enclosure, concrete, and housing 1 adopts aluminum die casting, to ensure that this housing 1 has higher intensity.Certainly, housing 1 also can be selected for Stainless Steel Shell or iron-clad body etc., be not limited in this.
To the above-mentioned explanation of the disclosed embodiments, those skilled in the art are realized or uses the utility model.To be apparent for a person skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an intrusion detector, is characterized in that, comprising: housing, is arranged at the printed circuit board in described housing, the piezoelectric membrane sheet be electrically connected with described printed circuit board, is positioned at the upper cover be connected above described printed circuit board and with described housing.
2. intrusion detector according to claim 1, is characterized in that, described piezoelectric membrane sheet comprises: piezoelectric membrane body, the mass be connected with the bottom of described piezoelectric membrane body.
3. intrusion detector according to claim 1, is characterized in that, described piezoelectric membrane sheet is parallel with described printed circuit board.
4. intrusion detector according to claim 1, is characterized in that, described piezoelectric membrane sheet realizes being electrically connected by grafting with described printed circuit board.
5. intrusion detector according to claim 4, is characterized in that, described piezoelectric membrane sheet is provided with contact pin, and described printed circuit board is provided with the through hole coordinated with described contact pin.
6. intrusion detector according to claim 1, is characterized in that, described printed circuit board and described housing removably connect; Described upper cover and described housing removably connect, and are tightly connected by waterproof washer between described upper cover and described housing.
7. intrusion detector according to claim 6, is characterized in that, described printed circuit board is provided with jack, and described housing is provided with the fixed leg coordinated with described jack; Described upper cover is threaded connection part with described housing and is removably connected.
8. intrusion detector according to claim 1, is characterized in that, the sidewall that two of described housing are relative is provided with cable hole, and described cable hole place is provided with water joint.
9. intrusion detector according to claim 1, is characterized in that, described housing is provided with the fixed orifice for being fixed on installation site.
10. according to the intrusion detector in claim 1-9 described in any one, it is characterized in that, described printed circuit board is provided with breaking-proof switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022891.0U CN204348004U (en) | 2015-01-13 | 2015-01-13 | A kind of intrusion detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022891.0U CN204348004U (en) | 2015-01-13 | 2015-01-13 | A kind of intrusion detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204348004U true CN204348004U (en) | 2015-05-20 |
Family
ID=53231260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520022891.0U Active CN204348004U (en) | 2015-01-13 | 2015-01-13 | A kind of intrusion detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204348004U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020038436A1 (en) * | 2018-08-23 | 2020-02-27 | 德清县德意电脑有限公司 | Improved extremely-low-frequency micro-vibration signal sensor |
-
2015
- 2015-01-13 CN CN201520022891.0U patent/CN204348004U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020038436A1 (en) * | 2018-08-23 | 2020-02-27 | 德清县德意电脑有限公司 | Improved extremely-low-frequency micro-vibration signal sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204348004U (en) | A kind of intrusion detector | |
| CN206251198U (en) | A kind of multifunctional intellectual web camera | |
| CN212061387U (en) | Abnormal event detection equipment | |
| KR20180060039A (en) | Apparatus for expelling birds on electric pole | |
| CN211176013U (en) | Automatic rotating explosion-proof camera base | |
| CN206210623U (en) | A kind of super capacitor module | |
| CN210862783U (en) | Multifunctional water quality monitor | |
| CN204608458U (en) | A kind of electric clothes hanger | |
| CN207881749U (en) | environmental water quality monitoring device based on internet of things | |
| CN203503115U (en) | Swimming safety protection system | |
| CN209928028U (en) | Remote horizontal vibration monitoring device | |
| CN2870016Y (en) | Passive intruding infrared detector with direction selection | |
| CN207442096U (en) | A kind of connector plug latching device | |
| CN203367750U (en) | Improved intelligent lightning rod | |
| CN207200926U (en) | A kind of In-Ear Headphones | |
| CN214929443U (en) | Monitoring device for new energy automobile | |
| CN213543505U (en) | Landslide multipoint displacement intelligent monitoring device | |
| CN206399503U (en) | Liquid level alarm | |
| CN203351414U (en) | Potting tool for capacitor whose housing is provided with cuboid-shaped notch | |
| CN211789353U (en) | Temperature acquisition and alarm device for pole column of storage battery | |
| CN216647514U (en) | Novel electric power material storage is with control device | |
| CN216390131U (en) | Waterproof type power distribution cabinet | |
| CN212462455U (en) | Automatic alarm device of low-voltage switch cabinet | |
| CN204177936U (en) | A kind of storage battery monitoring device | |
| CN214098622U (en) | Wireless networking intelligence smoke detector based on artificial intelligence |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20201119 Granted publication date: 20150520 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210112 Granted publication date: 20150520 |
|
| PD01 | Discharge of preservation of patent |