CN201293835Y - Electromagnetic interference resistance sensor of backing radar - Google Patents
Electromagnetic interference resistance sensor of backing radar Download PDFInfo
- Publication number
- CN201293835Y CN201293835Y CNU2008202179035U CN200820217903U CN201293835Y CN 201293835 Y CN201293835 Y CN 201293835Y CN U2008202179035 U CNU2008202179035 U CN U2008202179035U CN 200820217903 U CN200820217903 U CN 200820217903U CN 201293835 Y CN201293835 Y CN 201293835Y
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- CN
- China
- Prior art keywords
- radome
- sensor
- intermediate frequency
- wiring board
- shielding case
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model discloses an anti-electromagnetic-interference reversing radar sensor, which comprises an ultrasonic generating and inducing device, a circuit board, an outer casing, a connector and an electromagnetic shielding case made of metal materials, and the shielding case and the surface of the circuit board circle a closed cavity together. The circuit board comprises an intermediate frequency transformer, the intermediate frequency transformer is a winding transformer which amplifies signals, only the intermediate frequency transformer is located in the cavity, and the shielding case is earthed. The sensor separately shields the intermediate frequency transformer, can obtain anti-interference effect identical to that of applying shielding to the integral sensor, simultaneously largely reduces the volume of the shielding case, is favorable for production assemblage and encapsulating, increases production efficiency and reduces assembly cost. The intermediate frequency shielding case is simple in fabrication process, strong in plasticity and low in manufacturing cost.
Description
Technical field
The utility model relates to a kind of radar for backing car, has particularly installed the radar for backing car of anti-electromagnetic interference shielding cover additional.
Background technology
The Electromagnetic Interference that sensor on the radar for backing car produces when being subjected to the work of powerful devices such as vehicle xenon headlight, engine, air-conditioning easily, thus have influence on the accuracy of detection.Such as, in the time of in sensor is installed in apart from vehicle xenon headlight 20 cm range, usually just can't operate as normal.
Therefore, installed the radome (5) of anti-electromagnetic interference (EMI) on the sensor of existing now a lot of radar for backing car additional, this radome (5) generally is that the whole base plate circuit to sensor carries out shielding protection, as shown in Figure 4.But because radome (5) has covered whole wiring board (2), cause the inner space of whole sensor crowded, be difficult to coupling, it produces, and the line group is stood and embedding is all inconvenient, therefore can't realize volume production in enormous quantities, thereby cause production efficiency low, the production cost height.
Through analysis of experiments repeatedly, we find that it is middle week that sensor internal is subjected to the components and parts of electromagnetic interference effect maximum.Week is a winding transformer in the sensor, when signal is amplified, is subject to the Electromagnetic Interference of the closed current carrying conductor radiation of the Transformer Winding of other electronic devices in the car.Therefore consider the Anti-interference Design that centering Zhou Jinhang is independent.
Summary of the invention
Technical problem to be solved in the utility model provides the sensor that good and its structure of a kind of anti-interference is convenient to the radar for backing car of volume production.
The purpose of this utility model is achieved in that
A kind of sensor of radar for backing car of anti-electromagnetic interference (EMI) comprises: the electro-magnetic shielding cover of ultrasound wave generation and induction installation, wiring board, shell, connector, metal material surrounds an airtight cavity jointly by the plate face of described radome and described wiring board.Described wiring board comprises middle week, and Zhou Weiyi is used for the winding transformer with the signal amplification in this, has and only have described middle be positioned in week described cavity, described Shielding Case grounding.
Described radome is a uncovered box body, and the uncovered edge of this radome and the plate face of described wiring board are fixedly connected.
The utility model the closed current carrying conductor radiation source shielding of the Transformer Winding of other electronic devices in the car, reduces the interference to sensor by principle of electromagnetic shield-ing at middle all arranged outside radomes.Because the use of technique scheme the utlity model has following advantage:
1, separately centering week is implemented shielding, can obtain and the sensor whole implementation is shielded identical anti-interference effect.According to measured data, under vehicle xenon headlight unlatching situation, the inefficacy of sensor distance foreshortens to about 15cm.
2, centering week install radome additional separately, reduced the volume of radome greatly, help producing the upright and encapsulating of line group, improved production efficiency, reduced assembly cost.
3, the manufacture craft of middle all radomes is simple, and plasticity is strong, and production cost is low.
Description of drawings
Accompanying drawing 1 is the stereographic map of embodiment 1;
Accompanying drawing 2 is the stereographic map of embodiment 2;
Accompanying drawing 3 is the stereographic map of embodiment 3
Accompanying drawing 4 is the stereographic map of prior art.
Wherein: 1, ultrasound wave takes place and induction installation; 2, wiring board; 3, loam cake; 4, connector; 5, radome; 6, middle week; 7, lining; 8, body; 9, pin; 10, inserted sheet.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is specifically described.
Embodiment 1:
As shown in Figure 1, this sensor is mainly taken place to constitute with induction installation 1, radome 5 by body 8, wiring board 2, ultrasound wave.Outside sensor, also be provided with the shell of forming by loam cake 3, connector 4, lining 7.In week 6 during wiring board 2 is provided with, the radiating circuit that week 6 is arranged in sensor in this is used for the voltage amplification that will transmit, produces high-voltage signal and takes place and induction installation 1 to drive ultrasound wave.On structure, middle all 6 is I.F.T.s, comprises primary coil and secondary coil, is to produce the strongest electronic unit of electromagnetic interference (EMI) in the whole sensor.
Other parts except radome 5, its structure and existing sensors are basic identical.Unique improvements are: radome 5 has dwindled into the box body of a rectangle, and the uncovered of this box body covers on middle week 6 down.Radome 5 has surrounded a cavity jointly with the plate face of wiring board 2, and this cavity is with middle all 6 complete wrapping.
Radome 5 is fixedly connected with the plate face of wiring board 2.In the present embodiment, pin 9 is set, pin 9 is welded on the plate face of wiring board 2 then, achieve a fixed connection thus by outstanding on the outside surface of radome 5.
Radome 5 adopts the sheet metal manufacturing, and wiring board 2 is similarly metal.So according to principle of electromagnetic shield-ing, the inside cavity and outside electromagnetic screen mutually that surround jointly by metallic shield 5 and wiring board 2, and radome is realized electrostatic screening by wiring board 2 ground connection.
Embodiment 2:
As shown in Figure 2, protrude in the uncovered edge of radome 5 and to be provided with 2 inserted sheets 10, this inserted sheet 10 can insert in the jack that is opened on the wiring board 2, thereby realizes seamless and fixedly connected conductively.
Embodiment 3:
As shown in Figure 3, the size of radome 5 just is harmonious with middle all 6 size, and therefore when radome 5 being enclosed within on middle week 6, its inside surface fits tightly mutually with middle all 6 outside surface.Thus, radome 5 by with middle all 6 and wiring board 2 contact realize the conduction and ground connection.
As mentioned above, we are illustrated according to aim of the present utility model fully, but the utility model is not limited to the foregoing description and implementation method.The practitioner of correlative technology field can carry out different variations and enforcement in the scope of technological thought permission of the present utility model.
Claims (2)
1, a kind of sensor of radar for backing car of anti-electromagnetic interference (EMI), comprise: the electro-magnetic shielding cover (5) with induction installation (1), wiring board (2), shell, connector (4), metal material takes place in ultrasound wave, plate face by described radome (5) and described wiring board (2) surrounds an airtight cavity jointly, it is characterized in that:
Described wiring board (2) comprises middle week (6), and week (6) is one to be used for winding transformer that signal is amplified in this,
There is and only have described middle week (6) to be positioned at described cavity,
Described radome (5) ground connection.
2, the sensor of the radar for backing car of anti-electromagnetic interference (EMI) according to claim 1 is characterized in that: described radome (5) is a uncovered box body, and the plate face of uncovered edge of this radome (5) and described wiring board (2) is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202179035U CN201293835Y (en) | 2008-11-13 | 2008-11-13 | Electromagnetic interference resistance sensor of backing radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202179035U CN201293835Y (en) | 2008-11-13 | 2008-11-13 | Electromagnetic interference resistance sensor of backing radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201293835Y true CN201293835Y (en) | 2009-08-19 |
Family
ID=41007318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202179035U Expired - Lifetime CN201293835Y (en) | 2008-11-13 | 2008-11-13 | Electromagnetic interference resistance sensor of backing radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201293835Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096029A (en) * | 2010-11-27 | 2011-06-15 | 山东电力集团公司济宁供电公司 | Sensor box for detecting ultrahigh frequency electromagnetic wave signals |
| CN104590143A (en) * | 2015-01-06 | 2015-05-06 | 同致电子科技（昆山）有限公司 | Reversing sensor probe |
-
2008
- 2008-11-13 CN CNU2008202179035U patent/CN201293835Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096029A (en) * | 2010-11-27 | 2011-06-15 | 山东电力集团公司济宁供电公司 | Sensor box for detecting ultrahigh frequency electromagnetic wave signals |
| CN104590143A (en) * | 2015-01-06 | 2015-05-06 | 同致电子科技（昆山）有限公司 | Reversing sensor probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |
|
| CX01 | Expiry of patent term |