CN103344966A - GNSS receiver with high electromagnetic compatibility and high three-proof performance - Google Patents
GNSS receiver with high electromagnetic compatibility and high three-proof performance Download PDFInfo
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- CN103344966A CN103344966A CN2013102577235A CN201310257723A CN103344966A CN 103344966 A CN103344966 A CN 103344966A CN 2013102577235 A CN2013102577235 A CN 2013102577235A CN 201310257723 A CN201310257723 A CN 201310257723A CN 103344966 A CN103344966 A CN 103344966A
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Abstract
The invention discloses a GNSS receiver with high electromagnetic compatibility and high three-proof performance. The GNSS receiver with the high electromagnetic compatibility and the high three-proof performance is mainly composed of a shell body with a bilayer structure, a sealing elastic body, a middle-cavity shielding body and the like. The middle-cavity shielding body comprises a shielding shell body, a plurality of protection areas for arranging electrical elements easy to interfere and a plurality of shielding areas for arranging interference sources are arranged in the middle-cavity shielding body, and the protecting areas and the shielding areas are separated from each other. By adopting cambered surface bilayer shell body, the sealing elastic body and the plastic middle-cavity shielding body with strong plasticity, the GNSS receiver arranges a bluetooth module, a GPRS module, a GPS module, a UHF module and other modules in different spaces and carries out isolation by spraying shielding coating on the surfaces of plastic shells, and electromagnetic interference among modules is reduced. The GNSS receiver is simple in structure, high in electromagnetic compatibility, safe and reliable, and has the three-proof performance of water proof, dust proof and shock proof.
Description
Technical field
The present invention relates to a kind of GNSS receiver, relate in particular to the GNSS receiver of a kind of high electrical-magnetic compatibility and high NBC protective performance.
Background technology
The full name of GNSS is GLONASS (Global Navigation Satellite System) (Global Navigation Satellite System), it is all satellite navigation systems of general reference, comprise the whole world, the zone with strengthen, as GPS of USA, Muscovite Glonass, the Galileo in Europe, the Beidou satellite navigation system of China, and relevant enhancing system, WAAS(Wide Area Augmentation System as the U.S.), overlapping system navigates quietly in the EGNOS(Europe in Europe) and the Japanese multi-functional transportation satellite enhancing of MSAS(system) etc., also be encompassed in other satellite navigation systems of building and will build later on.World GNSS system is a multisystem, stage construction, multimodal complicated combined system.
The single wall design is all adopted in the shell of the receiver of external interior company design at present.Contrast U.S. TRIMBLE company 5800 structural designs: its patent No.: US D471,539S/ project: GPS RECEIVER.Its body design adds water proof ring for single wall design.And domestic other company's products have also adopted similar shell mechanism design proposal.The product Electro Magnetic Compatibility solution of this type of shell design is to have taked the interior metal inner cavity body of single-wall shell+shell and electrical equipment to be connected the structure of cooperation firmly.This class formation is when the shielding of utilizing wire chamber solves electromagnetic compatibility problem, and its shortcoming also is tangible: (1) this class formation easily damages fragile electrical equipment or housing coupling part because of the metallic cavity vibrations when being subjected to foreign impacts.(2) this class formation places each functional module of inside of product in the single shielding space.Electro Magnetic Compatibility between its inner each functional module is not effectively solved.
Because GPS receiving antenna and processing module, radio station antenna and radio station module, GPRS/CDMA module, bluetooth module all relate to radio frequency part, though work in the different frequency range scope, in small space, also exist each other and disturb.When especially being operated in the comparison rugged environment, the phase mutual interference is just relatively serious, shows as mainly that the satellite signal to noise ratio (S/N ratio) is low, to receive the star number order few, radio station operating distance closely, off and on, GPRS/CDMA and bluetooth instability, frequent broken string etc.
Summary of the invention
The object of the present invention is to provide the GNSS receiver of a kind of high electrical-magnetic compatibility and high NBC protective performance.This GNSS receiver is by adopting arc surfaced double casing and sealing elastomer and the strong plastics lumen shield shell of plasticity, modules such as bluetooth, GPRS, GPS, UHF are placed on different spaces and isolate the electromagnetic interference (EMI) of reduction intermodule by plastic casing surface spraying shielding coating; GNSS receiver structure of the present invention is simple, Electro Magnetic Compatibility is high, safe and reliable, have waterproof and dustproof, shockproof high NBC protective performance.
The present invention is concrete to adopt following technical scheme to realize:
The GNSS receiver of a kind of high electrical-magnetic compatibility and high NBC protective performance comprises shell, is located at the controller shell on the shell and is located at the interior electrical equipment of shell; Described GNSS receiver also comprises the lumen shield, described lumen shield comprises the shield shell, this shield shell is provided with a plurality of fixed heads, is provided with fixed leg a plurality of and that fixed head is supporting in the described shell, and each fixed head is fixed on the corresponding fixed leg by screw; Be provided with in the described lumen shield and a plurality ofly be subject to disturb the protected location of electrical equipment and a plurality of be used to the shadow zone that interference source is set for setting, described protected location and shadow zone are isolated.
Further, described shell is the arc surfaced double-decker, and this arc surfaced double-decker comprises upper casing, the lower casing of arc surfaced and is located at the upper casing medial surface and a circle inner casing of lower casing medial surface.
Further, be provided with a circle elastic seal ring in the described arc surfaced double-decker, this elastic seal ring is located between the lower casing.
Further, described shield shell surface is provided with the shielding coating layer.
Further, described shield shell is plastic housing.
Further, be provided with crash roll between the fixed leg in the fixed head of described lumen shield and the shell.
Further, be provided with earthquake washer between described fixed leg and the screw.
Further, also be provided with a plurality of crash rolls and the supporting earthquake washer of a plurality of and corresponding crash roll between described lumen shield and the lower casing.
Further, described protected location comprises first protected location and second protected location, is respectively equipped with the signal controlling of described electrical equipment in described first protected location, second protected location and handles class wiring board, radio frequency class wiring board; Described shadow zone comprises first shadow zone and secondary shielding district, is respectively equipped with power supply, the I/O interface of described electrical equipment in described first shadow zone, the secondary shielding district.
Further, all be welded with metallic shield on described signal controlling and processing class wiring board, the radio frequency class wiring board.
The GNSS receiver of high electrical-magnetic compatibility of the present invention and high NBC protective performance mainly is made up of housing, sealing elastomer, lumen shield etc.; Housing comprises the layer structure that upper casing, lower casing, controller shell etc. surround; Sealing elastomer comprises housing water proof ring, earthquake washer and crash roll; The lumen shield comprises middle cavity, radome, barricade etc.Each structure Design and effect are as follows:
Housing design of the present invention has waterproof construction and the arc surfaced double-decker of elastic water-proof O-ring seal; This double-decker mainly plays 2 effects to the GNSS receiver structure: 1) the arc surfaced structure can be disperseed suffered impulsive force; Elastic deformation takes place when 2) impacting, to the internal mechanism buffer protection.
Sealing elastomer design of the present invention, in conjunction with housing and the design of lumen shield, purpose is to cushion extraneous impulsive force.Between last lower house, design O-ring seal, in waterproof, played the effect of housing damping; Equally, also adopt earthquake washer and crash roll between lumen shield and lower casing, guarantee housing when being subjected to impacting, the part that the precise electronic device is housed obtains buffering.
The plastics material of shield shell has as a whole been used in lumen shield design of the present invention, simultaneously its surface spraying shielding coating.And other receivers adopt metal to shield usually, thick and heavy and difficult expansion.
The present invention compared with prior art has following beneficial effect:
GNSS receiver structure of the present invention is used electromagnetic isolation and shield technology, module and the interference source that is subject to disturb spatially rationally distributed, each other as far as possible mutually away from.With metallic shield emphasis EMI is shielded, reduce and crosstalk mutually.And by the strong plastic construction design of plasticity, these modules are placed on different spaces and have carried out electromagnetic isolation by frosting spraying shielding coating, greatly reduce the phase mutual interference.Effectively solve different frequency modules such as bluetooth, GPRS, GPS, UHF are integrated in electromagnetic compatibility problem in the same shell.
Because the present invention has comprehensively used various solution electromagnetic compatibility means, its shield effectiveness meets the requirements.In test, the actual shield effectiveness of this GNSS receiver structure has reached the 110dB usefulness that adopts the metal material shielding equally at 20MHz～20GHz.
Because the present invention taked arc surfaced double-decker and sealing elastomer, make this GNSS receiver product have three higher anti-abilities, i.e. waterproof and dustproof, shockproof three anti-abilities.
GNSS receiver of the present invention satisfies the IPX67 standard; Can immerse 1 meter under water, floatability; And can bear 2 meters hard places and fall.
Description of drawings
Fig. 1 is GNSS receiver one-piece construction synoptic diagram of the present invention.
Fig. 2 is GNSS receiver cutting plane structural representation of the present invention.
Fig. 3 is shockproof structure synoptic diagram of the present invention.
Fig. 4 is lumen shield structural representation of the present invention.
Embodiment
Below in conjunction with specific embodiment technical scheme of the present invention is described further.
The GNSS receiver of high electrical-magnetic compatibility as depicted in figs. 1 and 2 and high NBC protective performance comprises shell 1, is located at the controller shell 4 on the shell and is located at the interior electrical equipment of shell; Described GNSS receiver also comprises lumen shield 3, described lumen shield comprises the shield shell, this shield shell is provided with a plurality of fixed heads 5, be provided with fixed leg 6 a plurality of and that fixed head is supporting in the described shell, each fixed head is fixed in (as shown in Figure 3) on the corresponding fixed leg by screw 7; Described lumen shield 3(is as shown in Figure 4) in be provided with and a plurality ofly be subject to disturb the protected location 8 of electrical equipment and a plurality of be used to the shadow zone 9 that interference source is set for setting, described protected location 8 is isolated with shadow zone 9.
Shell 1 of the present invention is the arc surfaced double-decker, and this arc surfaced double-decker comprises upper casing 10, the lower casing 11 of arc surfaced and is located at the upper casing medial surface and a circle inner casing 12 of lower casing medial surface 2.Be provided with a circle elastic seal ring 13 in the described arc surfaced double-decker, this elastic seal ring is located between the lower casing.
Further, described shield shell is plastic housing, and shield shell surface is provided with the shielding coating layer.
Shockproof structure as shown in Figure 3 comprises fixed head 5, fixed leg 6, crash roll 14 and earthquake washer 15, is provided with crash roll 14 between the fixed leg in the fixed head of described lumen shield and the shell.Be provided with earthquake washer 15 between described fixed leg and the screw, this earthquake washer can be plain washer.
Further, also be provided with a plurality of crash rolls and the supporting earthquake washer of a plurality of and corresponding crash roll between described lumen shield 3 and the lower casing 11.
Lumen shield as shown in Figure 4, protected location 8 comprise first protected location and second protected location, are respectively equipped with the signal controlling of described electrical equipment in described first protected location, second protected location and handle class wiring board, radio frequency class wiring board; Shadow zone 9 comprises first shadow zone and secondary shielding district, is respectively equipped with power supply, the I/O interface of described electrical equipment in described first shadow zone, the secondary shielding district.
Further, all be welded with metallic shield on described signal controlling and processing class wiring board, the radio frequency class wiring board.
The GNSS receiver of high electrical-magnetic compatibility of the present invention and high NBC protective performance, when using by dress, earlier the connection line plate is installed in the lumen shield, again the crash roll structure is installed in the lumen shield, then the lumen shield is fixed in lower casing, afterwards controller shell, elastic seal ring are installed on the lower casing, at last upper casing and the supporting installation of lower casing are got final product.
The GNSS receiver of high electrical-magnetic compatibility of the present invention and high NBC protective performance, its housing design has waterproof construction and the arc surfaced double-decker of elastic water-proof O-ring seal; This double-decker mainly plays 2 effects to the GNSS receiver structure: 1) the arc surfaced structure can be disperseed suffered impulsive force; Elastic deformation takes place when 2) impacting, to the internal mechanism buffer protection.
Its sealing elastomer design, in conjunction with housing and the design of lumen shield, purpose is to cushion extraneous impulsive force.Between last lower house, design O-ring seal, in waterproof, played the effect of housing damping; Equally, also adopt earthquake washer and crash roll between lumen shield and lower casing, guarantee housing when being subjected to impacting, the part that the precise electronic device is housed obtains buffering.
The plastics material of shield shell has as a whole been used in its lumen shield design, simultaneously its surface spraying shielding coating.And other receivers adopt metal to shield usually, thick and heavy and difficult expansion.
The GNSS receiver of high electrical-magnetic compatibility of the present invention and high NBC protective performance is in test, and its actual shield effectiveness has reached the 110dB usefulness that adopts the metal material shielding equally at 20MHz～20GHz.
Owing to taked arc surfaced double-decker and sealing elastomer, make this GNSS receiver product have three high anti-abilities, i.e. waterproof and dustproof, shockproof three anti-abilities; This GNSS receiver satisfies the IPX67 standard; Can immerse 1 meter under water, floatability; And can bear 2 meters hard places and fall.
Claims (10)
1. the GNSS receiver of a high electrical-magnetic compatibility and high NBC protective performance, comprise shell, be located at the controller shell on the shell and be located at the interior electrical equipment of shell, it is characterized in that, also comprise the lumen shield, described lumen shield comprises the shield shell, this shield shell is provided with a plurality of fixed heads, is provided with fixed leg a plurality of and that fixed head is supporting in the described shell, and each fixed head is fixed on the corresponding fixed leg by screw; Be provided with in the described lumen shield and a plurality ofly be subject to disturb the protected location of electrical equipment and a plurality of be used to the shadow zone that interference source is set for setting, described protected location and shadow zone are isolated.
2. the GNSS receiver of high electrical-magnetic compatibility according to claim 1 and high NBC protective performance, it is characterized in that, described shell is the arc surfaced double-decker, and this arc surfaced double-decker comprises upper casing, the lower casing of arc surfaced and is located at the upper casing medial surface and a circle inner casing of lower casing medial surface.
3. the GNSS receiver of high electrical-magnetic compatibility according to claim 2 and high NBC protective performance is characterized in that, is provided with a circle elastic seal ring in the described arc surfaced double-decker, and this elastic seal ring is located between the lower casing.
4. the GNSS receiver of high electrical-magnetic compatibility according to claim 1 and high NBC protective performance is characterized in that, described shield shell is plastic housing.
5. the GNSS receiver of high electrical-magnetic compatibility according to claim 1 and high NBC protective performance is characterized in that, is provided with crash roll between the fixed leg in the fixed head of described lumen shield and the shell.
6. the GNSS receiver of high electrical-magnetic compatibility according to claim 5 and high NBC protective performance is characterized in that, is provided with earthquake washer between described fixed leg and the screw.
7. the GNSS receiver of high electrical-magnetic compatibility according to claim 1 and high NBC protective performance is characterized in that, also is provided with a plurality of crash rolls and earthquake washer between described lumen shield and the lower casing.
8. the GNSS receiver of high electrical-magnetic compatibility according to claim 1 and high NBC protective performance, it is characterized in that, described protected location comprises first protected location and second protected location, is respectively equipped with the signal controlling of described electrical equipment in described first protected location, second protected location and handles class wiring board, radio frequency class wiring board; Described shadow zone comprises first shadow zone and secondary shielding district, is respectively equipped with power supply, the I/O interface of described electrical equipment in described first shadow zone, the secondary shielding district.
9. the GNSS receiver of high electrical-magnetic compatibility according to claim 8 and high NBC protective performance is characterized in that, all is welded with metallic shield on described signal controlling and processing class wiring board, the radio frequency class wiring board.
10. according to the GNSS receiver of each described high electrical-magnetic compatibility and high NBC protective performance in the claim 1 to 9, it is characterized in that described shield shell surface is provided with the shielding coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102577235A CN103344966A (en) | 2013-06-26 | 2013-06-26 | GNSS receiver with high electromagnetic compatibility and high three-proof performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102577235A CN103344966A (en) | 2013-06-26 | 2013-06-26 | GNSS receiver with high electromagnetic compatibility and high three-proof performance |
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| CN103344966A true CN103344966A (en) | 2013-10-09 |
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| CN2013102577235A Pending CN103344966A (en) | 2013-06-26 | 2013-06-26 | GNSS receiver with high electromagnetic compatibility and high three-proof performance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103558616A (en) * | 2013-11-08 | 2014-02-05 | 北京神州天鸿数码技术有限公司 | Electromagnetic compatibility control method and equipment for beidou mobile terminal |
| CN105182368A (en) * | 2015-10-08 | 2015-12-23 | 广州中海达定位技术有限公司 | Gnss satellite receiver |
| CN108507558A (en) * | 2018-03-28 | 2018-09-07 | 株洲菲斯罗克光电技术有限公司 | A kind of lightweight three-axis integrative fibre optic gyroscope |
| CN113687389A (en) * | 2020-05-18 | 2021-11-23 | 航天科工惯性技术有限公司 | Integrated GNSS receiver suitable for field disaster monitoring |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103558616A (en) * | 2013-11-08 | 2014-02-05 | 北京神州天鸿数码技术有限公司 | Electromagnetic compatibility control method and equipment for beidou mobile terminal |
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| CN108507558A (en) * | 2018-03-28 | 2018-09-07 | 株洲菲斯罗克光电技术有限公司 | A kind of lightweight three-axis integrative fibre optic gyroscope |
| CN108507558B (en) * | 2018-03-28 | 2024-04-30 | 株洲菲斯罗克光电科技股份有限公司 | Lightweight triaxial integrated optical fiber gyroscope |
| CN113687389A (en) * | 2020-05-18 | 2021-11-23 | 航天科工惯性技术有限公司 | Integrated GNSS receiver suitable for field disaster monitoring |
| CN113687389B (en) * | 2020-05-18 | 2024-07-12 | 航天科工惯性技术有限公司 | Integrated GNSS receiver suitable for field disaster monitoring |
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Address after: 201702 Shanghai city Qingpu District Xujing town Gaojing Road No. 599 block C Applicant after: CHC Technology Co., Ltd. Address before: 200233, 2 floor, building 680, 35 Guiping Road, Shanghai, Xuhui District Applicant before: CHC Technology Co., Ltd. |
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Address after: 201702 Shanghai city Qingpu District Xujing town Gaojing Road No. 599 China Beidou Industrial Park C Building 2 floor Applicant after: Shanghai Hua Ce airmanship limited company Address before: 201702 Shanghai city Qingpu District Xujing town Gaojing Road No. 599 block C Applicant before: CHC Technology Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SHANGHAI HUACE NAVIGATION TECHNOLOGY CO., LTD. TO: CHC TECHNOLOGY CO., LTD. |
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Application publication date: 20131009 |