CN205354353U - Earth magnetism vehicle detector - Google Patents
Earth magnetism vehicle detector Download PDFInfo
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- CN205354353U CN205354353U CN201521101705.9U CN201521101705U CN205354353U CN 205354353 U CN205354353 U CN 205354353U CN 201521101705 U CN201521101705 U CN 201521101705U CN 205354353 U CN205354353 U CN 205354353U
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Abstract
The utility model relates to an earth magnetism vehicle detector specifically includes: PCBA, battery, support and shell, support one end is the PCBA fastener, and the other end holds in the palm for the battery, PCBA fixes on the PCBA fastener, the battery is fixed on the battery holds in the palm, the shell includes casing and cap, and the cap forms sealed chamber with the casing welding together, the support that is fixed with PCBA and battery is assembled on the casing towards the mode bottom the casing with the PCBA fastener, seals sealed intracavity. The utility model discloses an earth magnetism vehicle detector can stop the possibility that PCBA soaks basically, improves earth magnetism vehicle detector's waterproof performance.
Description
Technical field
This utility model relates to intelligent transportation field, especially a kind of earth magnetism wagon detector.
Background technology
Intelligent transportation system (ITS, IntelligentTransportationSystem), advanced information technology, data communication transmission technology, Electronic transducer technology, control technology and computer technology etc. are effectively integrated and apply to whole ground traffic control system, it is possible on a large scale, comprehensive performance in real time, composite communications transport management role accurately and efficiently.Composite communications transport management specifically includes public transport management, commercial car operation management, trip requirements management, emergency traffic management, wagon control and safety management etc., and vehicle detecting system is then the ITS data basis realizing composite communications transport management.
Vehicle detecting system is divided into two classes according to the type of wagon detector: based on the vehicle detecting system of fixing wagon detector, and the vehicle detecting system based on mobile wagon detector.For the vehicle detecting system based on fixing wagon detector, some class wagon detector needs to be fixedly installed under road surface and be distributed in each track of road network, such as, earth magnetism wagon detector, such laying feature makes vehicle equipment incessantly need to solve to install detection equipment can damage the problems such as road surface, difficulty of construction are big, also need to the impact considering working environment severe under road surface for wagon detector, the especially moist impact for wagon detector.
Concrete, earth magnetism wagon detector is generally embedded in urban road upper strata, urban road upper strata mostly is Colophonium cement gravel or concrete material is laid, these properties of materials are not easily to seep water after solidification, but the water infiltered not easily evaporates discharge, causing that the working environment of earth magnetism wagon detector is moist for a long time, at the time earth magnetism wagon detector of snow rainy, many or even under water, thus waterproof is one of required performance of earth magnetism wagon detector.
At present, usually by arrange between the housing of earth magnetism wagon detector shell and cap sealing ring realize seal waterproof.But when vehicle crosses above earth magnetism wagon detector, magnetic vehicle detector produces horizontal forward impulsive force and downward pressure over the ground, the seam crossing making housing and enclosing cover deforms, in turn result in seal failure infiltration, the earth magnetism wagon detector that takes place frequently in practice leaks and causes the assembling printed circuit board (PCB) (PCBA of detector, printedcircuitboardassembly) damage event also demonstrates this point, it is seen then that aforementioned seal structure can not the waterproof demand of magnetic vehicle detector contentedly.
Summary of the invention
In view of this, main purpose of the present utility model is in that to provide a kind of earth magnetism wagon detector, it is possible to substantially stops the possibility of PCBA immersion, improves the water resistance of earth magnetism wagon detector.
For reaching above-mentioned purpose, the technical solution of the utility model is as follows:
A kind of earth magnetism wagon detector, including: PCBA, battery, support and shell；Described shell includes housing and cap, and cap and case weld are together into sealing cavity；Described PCBA and battery are fixing on the bracket, are sealed in described annular seal space body together with support；Described cap bottom surface is provided with pillar, and this pillar contacts with described support but do not extrude, and this pillar supports described support when being inverted described sealing cavity.
Further, described support both sides also position support；The side wall inner surfaces corresponding positions of described housing is equipped with location supporting piece；Accordingly,
Described support is sealed in described annular seal space body and includes: described location support embeds described location supporting piece, and support does not contact with housing bottom.
Further, described support one end is PCBA fastener, and the other end is battery tray；Accordingly,
Described PCBA and battery fixing on the bracket specifically,
Described PCBA is fixed on PCBA fastener, and described battery is fixed in battery tray.
Further, described PCBA fastener includes at least four subcard part symmetrical between two；Accordingly,
Described PCBA is fixed on PCBA fastener: an angle of the fixing PCBA of each subcard part or a limit；Wherein,
Described subcard part includes dop and shell fragment, and dop upwards supports the angle of PCBA or a limit, and shell fragment is then pressed down against fixing this angle or limit.
Further, described battery tray includes base and the arc flap that the relative both sides of base extend upward；Accordingly,
Described battery is fixed in battery tray to include: base supports described battery, and two arc flaps then hug this battery and the common self-contained battery of base；Accordingly,
Described pillar contact with described support but do not extrude specifically,
The arc flap extrados that described pillar is corresponding with self contacts but does not extrude；
Described pillar support described support specifically,
Described pillar is supported under the arc flap extrados of self correspondence.
Further, the height of described sealing cavity with use the hydrops situation of environment, the upper surface of battery meets equation below to the distance of housing bottom surface inner surface:
Wherein, P is atmospheric pressure, and ρ is the density of water, and g is acceleration of gravity, hsFor sealing the height of cavity, hxFor the upper surface of battery to the distance of housing bottom surface inner surface, hjFor the hydrops water surface on road surface after the installation of earth magnetism wagon detector to the height of described housing inner bottom surface.
Further, described PCBA mono-jiao is provided with the first positioning port/the first positioning table, and one jiao of described support is provided with the first positioning table/the first positioning port, and this first positioning table embeds the first positioning port；Described location support includes the first location support and the second location support, it is divided into support both sides, described location supporting piece includes the first location supporting piece and the second location supporting piece, and this first location support embeds the first location supporting piece, and the second location support embeds the second location supporting piece；
Accordingly,
Having arrow on described hull outside bottom surface, when described bracket assembled is on housing, this arrow points is fixed on the x-axis positive direction of geomagnetic sensor on the PCBA in this housing.
Further, described PCBA mono-jiao is provided with the first positioning port/the first positioning table, and one jiao of described support is provided with the first positioning table/the first positioning port, and this first positioning table embeds the first positioning port；Described location support includes the first location support and the second location support, it is divided into support both sides, described location supporting piece includes the first location supporting piece and the second location supporting piece, and this first location support embeds the first location supporting piece, and the second location support embeds the second location supporting piece；Accordingly,
Described hull outside bottom surface has arrow, when described bracket assembled is on housing, the y-axis positive direction of the geomagnetic sensor that this arrow points is fixed on the PCBA of this housing.
Based on above-mentioned, the earth magnetism wagon detector that this utility model provides, have the following advantages and feature:
1, this utility model earth magnetism wagon detector, pillar supports described support when reverse mounted earth magnetism wagon detector, so, earth magnetism wagon detector seepage is serious, pour in water level not up to residing for PCBA and battery during height, PCBA and battery will not be dipped into, improve the water resistance of earth magnetism wagon detector；
2, during earth magnetism wagon detector serious leakage, the pressure equilibrium inside and outside annular seal space is utilized to form new annular seal space, PCBA and battery are positioned at the annular seal space that this is new, can substantially stop PCBA and the possibility of battery immersion, further increase the water resistance of earth magnetism wagon detector；
3, with the fixing PCBA of PCBA fastener, it is simple to assemble fixing PCBA, and be easy to forward assembling earth magnetism wagon detector and reverse mounted earth magnetism wagon detector afterwards；
4, employing location supporting piece holds up support, it is to avoid when assembling, transport, PCBA contacts with housing bottom, wear and tear pcb board and device thereon, ease of assembly, transport；
5, dop upwards supports the angle of PCBA or a limit, shell fragment is then pressed down against fixing this angle or limit, after reverse mounted earth magnetism wagon detector, it is shell fragment and then upwards holds up angle or the limit of PCBA, play the effect of damping, it is to avoid vehicle frequently crosses the problems such as device contacts that the vibrations caused cause is bad；
6, battery tray sets arc flap, after reverse mounted earth magnetism wagon detector, supports arc flap by the pillar of cap bottom surface, when being given a shock, arc flap elastic telescopic, further damping, it is to avoid vehicle frequently crosses the problems such as device contacts that the vibrations caused cause is bad；
7, with the first positioning table/the first positioning port coupling of first positioning port/the first positioning table of PCBA mono-jiao and one jiao of support, the second positioning table one of support side with the second positioning port one of housing sidewall mates, the second positioning port two coupling of the second positioning table two of support opposite side and housing sidewall, when having ensured to assemble, the direction of traffic of definition in the arrow points earth magnetism wagon detector algorithm on hull outside bottom surface, reaches 3 grades of mistake proofings.
Accompanying drawing explanation
Fig. 1 is the fractionation structural representation of this utility model embodiment earth magnetism wagon detector；
Fig. 2 is the structural representation of the support of this utility model embodiment earth magnetism wagon detector.
Detailed description of the invention
Basic thought of the present utility model is: PCBA generally has waterproof coating, waits working environment to have certain adaptability to dampness is big, thus, for the leakage scenarios except causing PCBA and directly soaking, substantially without PCBA being caused irreversible damage.In consideration of it, the situation that in use PCBA of earth magnetism wagon detector directly soaks is badly in need of stopping.And cap and housing joining place are often positions of seepage, visible, in this utility model embodiment, described pillar supports described support when being inverted described sealing cavity, namely when reverse mounted earth magnetism wagon detector, the pillar on earth magnetism wagon detector cap is made to hold up support, battery and PCBA is made to be positioned at sealing cavity top, during seepage, water enters from being positioned at the cap sealing cavity bottom with housing joining place, as long as seepage is serious, pour in water level not up to residing for battery and PCBA during height, being dipped into battery and PCBA；And when there is cap and case weld place serious leakage, water pours in from bottom to top, gas in annular seal space body is pressed to housing bottom, when water environment pressure described in the pressure+pour in of gas compressed seals the pressure=atmospheric pressure+wagon detector of the water of cavity, can at former sealing cavity top, i.e. battery and PCBA present position, form new sealing cavity, battery and PCBA can be avoided to be immersed in water, and then substantially stopped the PCBA possibility soaked.
Concrete, the fractionation structure of this utility model embodiment earth magnetism wagon detector is as it is shown in figure 1, include: PCBA1, battery 2, support 3 and shell 4；Shell 4 includes housing 41 and cap 42, and housing 41 and cap 42 are welded together to form sealing cavity；Described PCBA1 and battery 2 are fixed on support 3, are sealed in described annular seal space body together with support 3；Described cap 42 bottom surface is provided with pillar 421, and this pillar 421 contacts with described support 3 but do not extrude, and this pillar 421 supports described support 3 when being inverted described sealing cavity.Wherein,
Described it is welded as ultrasonic bonding.Sealing wire can be arranged at cap 42 bottom edge or housing 41 sidewall end face.Sealing wire be designed as prior art, repeat no more herein.
Described support 3 both sides also position support；The side wall inner surfaces corresponding positions of described housing 41 is equipped with location supporting piece；Accordingly,
Described support 3 is sealed in described annular seal space body and includes: described location support embeds described location supporting piece, and support 3 does not contact with bottom housing 41.
Described support 3 one end is PCBA fastener 31, and the other end is battery tray 32；Accordingly,
Described PCBA1 and battery 2 be fixed on described support 3 specifically,
Described PCBA1 is fixed on PCBA fastener 31, and described battery 2 is fixed in battery tray 32.
Further, as in figure 2 it is shown, described PCBA fastener 31 includes at least four subcard part symmetrical between two；Accordingly,
Described PCBA1 is fixed on PCBA fastener 31: an angle of the fixing PCBA1 of each subcard part or a limit；Wherein,
Described subcard part includes dop 311 and shell fragment 312, and dop 311 upwards supports the angle of PCBA1 or a limit, and shell fragment 312 is then pressed down against fixing this angle or limit；
Here, after reverse mounted earth magnetism wagon detector, it is shell fragment 312 and then upwards holds up angle or the limit of PCBA1, play the effect of damping, it is to avoid vehicle frequently crosses the problem such as device and pcb board loose contact on the PCBA1 that the vibrations caused cause；
Further, the side of each described subcard part all can arrange the first baffle plate 313, to fix PCBA1 further, it is prevented that PCBA1 level is slided.
Described battery tray 32 includes base 321 and the arc flap 322 that the relative both sides of base 321 extend upward；Accordingly,
Described battery 2 is fixed in battery tray 32 to include: base 321 supports battery 2, and two arc flaps 322 then hug this battery 2 and the common self-contained battery 2 of base 321；Accordingly,
Cap 42 bottom surface is provided with two described pillars 421, lay respectively at two positions corresponding with described arc flap 322 on cap 42 bottom surface, when this utility model embodiment earth magnetism wagon detector is completed, arc flap 322 extrados that each described pillar 421 is corresponding with self contacts but does not extrude；And when installing and using this utility model embodiment, described pillar 421 is supported under arc flap 322 extrados of self correspondence, hold up described support 3 so that be fixed on the PCBA1 on support 3 and battery is positioned at sealing cavity top.
Described base 321 is equipped with second baffle 323 with the adjacent both sides extending arc flap 322, with further self-contained battery 2, it is prevented that battery 2 level is slided.
For realizing function: earth magnetism wagon detector serious leakage, annular seal space inside and outside pressure equilibrium when forming new sealing cavity, PCBA1 and battery 2 are respectively positioned in the annular seal space body that this is new and do not soak, the height of described sealing cavity and earth magnetism wagon detector use the hydrops situation of environment, the upper surface of battery 2 needs to meet equation below to the distance of housing 41 bottom surface inner surface:
Wherein, P is atmospheric pressure, and ρ is the density of water, and g is acceleration of gravity, hsFor sealing the height of cavity, hxFor the upper surface of battery 2 to the distance of housing 41 bottom surface inner surface, hjFor the hydrops water surface on road surface after the installation of earth magnetism wagon detector to the height of described housing 41 inner bottom surface.
The mistake proofing design that this utility model embodiment earth magnetism wagon detector also includes assembling, installs, concrete,
The mistake proofing design during x-axis positive direction that direction of traffic is geomagnetic sensor on PCBA1 defined in this utility model embodiment earth magnetism wagon detector algorithm, assemble, installed is specific as follows:
Described PCBA1 mono-jiao is provided with the first positioning port, and 3 one jiaos of described support is provided with the first positioning table, and this first positioning table embeds the first positioning port；Described location support includes the first location support and the second location support, it is divided into support 3 both sides, described location supporting piece includes the first location supporting piece and the second location supporting piece, and this first location support embeds the first location supporting piece, and the second location support embeds the second location supporting piece；
Accordingly,
Described housing 41 has arrow on outside bottom surface, and when described support 3 is assembled on housing 41, this arrow points is fixed on the PCBA1 in this housing 41 the x-axis positive direction of geomagnetic sensor.Or,
Described PCBA1 mono-jiao is provided with the first positioning table, and 3 one jiaos of described support is provided with the first positioning port, and this first positioning table embeds the first positioning port；Described location support includes the first location support and the second location support, it is divided into support 3 both sides, described location supporting piece includes the first location supporting piece and the second location supporting piece, and this first location support embeds the first location supporting piece, and the second location support embeds the second location supporting piece；
Accordingly,
Described housing 41 has arrow on outside bottom surface, and when described support 3 is assembled on housing 41, this arrow points is fixed on the PCBA1 in this housing 41 the x-axis positive direction of geomagnetic sensor.Wherein,
Earth magnetism wagon detector related algorithm be embodied as prior art, repeat no more herein.
The mistake proofing design during y-axis positive direction that direction of traffic is geomagnetic sensor on PCBA1 defined in this utility model embodiment earth magnetism wagon detector algorithm, assemble, installed is specific as follows:
Described PCBA1 mono-jiao is provided with the first positioning table, and 3 one jiaos of described support is provided with the first positioning port, and this first positioning table embeds the first positioning port；Described location support includes the first location support and the second location support, it is divided into support 3 both sides, described location supporting piece includes the first location supporting piece and the second location supporting piece, and this first location support embeds the first location supporting piece, and the second location support embeds the second location supporting piece；Accordingly,
Described housing 41 has arrow on outside bottom surface, when described support 3 is assembled on housing 41, and the y-axis positive direction of the geomagnetic sensor that this arrow points is fixed on the PCBA1 of this housing 41.Or,
Described PCBA1 mono-jiao is provided with the first positioning port, and 3 one jiaos of described support is provided with the first positioning table, and this first positioning table embeds the first positioning port；Described location support includes the first location support and the second location support, it is divided into support 3 both sides, described location supporting piece includes the first location supporting piece and the second location supporting piece, and this first location support embeds the first location supporting piece, and the second location support embeds the second location supporting piece；Accordingly,
Described housing 41 has arrow on outside bottom surface, when described support 3 is assembled on housing 41, and the y-axis positive direction of the geomagnetic sensor that this arrow points is fixed on the PCBA1 of this housing 41.
The above, be only preferred embodiment of the present utility model, is not intended to limit protection domain of the present utility model.
Claims (8)
1. an earth magnetism wagon detector, including: PCBA, battery, support and shell；Described shell includes housing and cap, and cap and case weld are together into sealing cavity；Described PCBA and battery are fixing on the bracket, are sealed in described annular seal space body together with support；It is characterized in that, described cap bottom surface is provided with pillar, and this pillar contacts with described support but do not extrude, and this pillar supports described support when being inverted described sealing cavity.
2. earth magnetism wagon detector according to claim 1, it is characterised in that described support both sides also position support；The side wall inner surfaces corresponding positions of described housing is equipped with location supporting piece；Accordingly,
Described support is sealed in described annular seal space body and includes: described location support embeds described location supporting piece, and support does not contact with housing bottom.
3. earth magnetism wagon detector according to claim 1, it is characterised in that described support one end is PCBA fastener, the other end is battery tray；Accordingly,
Described PCBA and battery fixing on the bracket specifically,
Described PCBA is fixed on PCBA fastener, and described battery is fixed in battery tray.
4. earth magnetism wagon detector according to claim 3, it is characterised in that described PCBA fastener includes at least four subcard part symmetrical between two；Accordingly,
Described PCBA is fixed on PCBA fastener: an angle of the fixing PCBA of each subcard part or a limit；Wherein,
Described subcard part includes dop and shell fragment, and dop upwards supports the angle of PCBA or a limit, and shell fragment is then pressed down against fixing this angle or limit.
5. earth magnetism wagon detector according to claim 3, it is characterised in that described battery tray includes base and the arc flap that the relative both sides of base extend upward；Accordingly,
Described battery is fixed in battery tray to include: base supports described battery, and two arc flaps then hug this battery and the common self-contained battery of base；Accordingly,
Described pillar contact with described support but do not extrude specifically,
The arc flap extrados that described pillar is corresponding with self contacts but does not extrude；
Described pillar support described support specifically,
Described pillar is supported under the arc flap extrados of self correspondence.
6. earth magnetism wagon detector according to claim 5, it is characterised in that the height of described sealing cavity with use the hydrops situation of environment, the upper surface of battery meets equation below to the distance of housing bottom surface inner surface:
Wherein, P is atmospheric pressure, and ρ is the density of water, and g is acceleration of gravity, hsFor sealing the height of cavity, hxFor the upper surface of battery to the distance of housing bottom surface inner surface, hjFor the hydrops water surface on road surface after the installation of earth magnetism wagon detector to the height of described housing inner bottom surface.
7. earth magnetism wagon detector according to claim 2, it is characterised in that described PCBA mono-jiao is provided with the first positioning port/the first positioning table, and one jiao of described support is provided with the first positioning table/the first positioning port, and this first positioning table embeds the first positioning port；Described location support includes the first location support and the second location support, it is divided into support both sides, described location supporting piece includes the first location supporting piece and the second location supporting piece, and this first location support embeds the first location supporting piece, and the second location support embeds the second location supporting piece；
Accordingly,
Having arrow on described hull outside bottom surface, when described bracket assembled is on housing, this arrow points is fixed on the x-axis positive direction of geomagnetic sensor on the PCBA in this housing.
8. earth magnetism wagon detector according to claim 2, it is characterised in that described PCBA mono-jiao is provided with the first positioning port/the first positioning table, and one jiao of described support is provided with the first positioning table/the first positioning port, and this first positioning table embeds the first positioning port；Described location support includes the first location support and the second location support, it is divided into support both sides, described location supporting piece includes the first location supporting piece and the second location supporting piece, and this first location support embeds the first location supporting piece, and the second location support embeds the second location supporting piece；Accordingly,
Described hull outside bottom surface has arrow, when described bracket assembled is on housing, the y-axis positive direction of the geomagnetic sensor that this arrow points is fixed on the PCBA of this housing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521101705.9U CN205354353U (en) | 2015-12-28 | 2015-12-28 | Earth magnetism vehicle detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521101705.9U CN205354353U (en) | 2015-12-28 | 2015-12-28 | Earth magnetism vehicle detector |
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| CN205354353U true CN205354353U (en) | 2016-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469607A (en) * | 2015-12-28 | 2016-04-06 | 迈锐数据（北京）有限公司 | Geomagnetic vehicle detector and installation method for same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469607A (en) * | 2015-12-28 | 2016-04-06 | 迈锐数据（北京）有限公司 | Geomagnetic vehicle detector and installation method for same |
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