WO2012142965A1 - Ultrasonic transducer, sensor, and reversing radar system - Google Patents
Ultrasonic transducer, sensor, and reversing radar system Download PDFInfo
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- WO2012142965A1 WO2012142965A1 PCT/CN2012/074442 CN2012074442W WO2012142965A1 WO 2012142965 A1 WO2012142965 A1 WO 2012142965A1 CN 2012074442 W CN2012074442 W CN 2012074442W WO 2012142965 A1 WO2012142965 A1 WO 2012142965A1
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- ultrasonic transducer
- sensor
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- orientation
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
Definitions
- the present invention relates to an ultrasonic transducer, a sensor including an ultrasonic transducer, and a parking radar system including an ultrasonic transducer. Background technique
- Parking sensor systems typically include an electronic control unit, an ultrasonic sensor, and a display or buzzer.
- Ultrasonic sensors are used to transmit and receive ultrasonic signals, and ultrasonic sensors can measure the distance to the object being measured.
- the electronic control unit is used to transmit a sine wave pulse to the ultrasonic sensor and process the signal received from the ultrasonic sensor. After converting the distance value, the data is communicated with the display or the buzzer.
- the display or buzzer receives distance data from the electronic control unit and displays distance values based on distance and provides different levels of distance alarm sounds.
- Ultrasonic sensors typically include a ferrule, an ultrasonic transducer, a rubber ring, a housing, and a printed circuit board.
- the ultrasonic transducer has two mutually perpendicular orientations, if one of the directions is referred to as a horizontal orientation and the other orientation is a vertical orientation.
- a horizontal orientation if one of the directions is referred to as a horizontal orientation and the other orientation is a vertical orientation.
- the assembly process of the ultrasonic sensor is cumbersome and complicated.
- the orientation of the ultrasonic transducer must be precisely controlled during assembly, otherwise it will affect the accuracy of the measurement results of the parking radar system.
- the orientation of the ultrasonic transducer is achieved by the cooperation between the step on the outer side of the ultrasonic transducer and the step on the inside of the rubber ring and the cooperation between the additional step on the rubber ring and the step on the outer casing.
- the orientation of the ultrasonic transducer is typically adjusted by manually operating the ultrasonic transducer.
- the rubber ring is soft, it cannot pass the machine.
- the mechanical mode is fixed, the orientation of the ultrasonic transducer is prone to deviation, and the deviation angle can reach ⁇ 10°, which greatly reduces the accuracy of the measurement result of the reversing radar system.
- the present invention provides a sensor and a reversing radar system including such an ultrasonic transducer.
- an ultrasonic transducer comprising:
- a housing having an inner cavity formed therein;
- Piezoelectric material sheets and composite materials disposed in the inner cavity
- a positioning structure for determining the orientation of the ultrasonic transducer is provided on the end side wall of the casing.
- the positioning structure is at least two holes formed on the end side walls.
- the positioning structure is at least two protrusions formed on the end side walls.
- a sensor according to the present invention includes: a rubber ring;
- An ultrasonic transducer the ultrasonic transducer is sleeved in the rubber ring and housed in Within the housing, the ultrasonic transducer includes:
- a housing having an inner cavity formed therein;
- Piezoelectric material sheets and composite materials disposed in the inner cavity
- a positioning structure is provided on the end side wall of the housing for determining the orientation of the ultrasonic transducer to control the orientation of the ultrasonic transducer relative to the sensor housing.
- the parking reversing radar system includes the ultrasonic transducer as described above or the sensor as described above.
- the orientation of the ultrasonic transducer relative to the sensor housing can be controlled accurately, quickly and conveniently, thereby significantly improving the accuracy of the measurement results of the parking sensor system.
- Figure 1 shows a perspective view of an ultrasonic transducer in accordance with the present invention
- Figure 2 shows a front view of an ultrasonic transducer in accordance with the present invention
- FIG. 3 shows a side view of an ultrasonic transducer in accordance with the present invention
- Fig. 4 shows an exploded perspective view of a sensor including an ultrasonic transducer according to the present invention. detailed description
- the ultrasonic transducer 1 comprises a generally cylindrical housing 3.
- the housing 3 is usually made of aluminum.
- a lumen 5 is formed in the housing 3.
- the inner cavity 5 may have a regular or irregular shape as needed.
- a sheet of piezoelectric material (not shown) is adhered to the inner cavity 5 and filled in the inner cavity 5 Filled with the required composite material 7. Wires 9 for connection to the printed circuit board are taken from the inner cavity 5 and via the composite material.
- the end wall 11 of the housing 3 of the ultrasonic transducer 1 is provided with a positioning structure 13 for determining the orientation of the ultrasonic transducer 1.
- the positioning structure 13 can be any suitable structure as long as it can ensure that the horizontal and vertical orientations of the ultrasonic transducer 1 are respectively parallel to the horizontal and vertical orientations of the outer casing 19 (shown in Figure 4) of the finally formed ultrasonic sensor.
- the positioning structure 13 may be two holes 15 formed in the end side walls 11.
- the two holes 15 can be randomly distributed on the end side walls 11.
- the number of holes 15 can be more than two.
- the positioning structure 13 may be two protrusions (not shown) formed on the end side walls 11.
- the two protrusions may be randomly distributed on the end side wall 11.
- the number of protrusions can be more than two.
- FIG. 4 shows a sensor 17 comprising an ultrasonic transducer according to the invention.
- the sensor housing 19 is first fixed to an assembly stand (not shown), the ultrasonic transducer 1 is inserted into the rubber ring 21 and the positioning structure 13 on the ultrasonic transducer 1 is ensured not to be rubberized. Circle 21 is blocked.
- the positioning structure 13 is a hole, a probe (not shown) provided on the assembly stage is inserted into the hole. Since the orientation of the probe relative to the sensor housing 19 is preset, it is only necessary to simply insert the probe into the hole in the ultrasonic transducer 1 to accurately and quickly and conveniently control the ultrasonic transducer 1 relative to The orientation of the sensor housing 19.
- the positioning structure 13 is a projection
- the projection is held by a clip (not shown) provided on the assembly stand. Since the orientation of the clip relative to the sensor housing 19 is preset, the ultrasonic transducer 1 can be accurately and quickly controlled relative to the sensor simply by clamping the protrusion on the ultrasonic transducer 1 with a clip. The orientation of the outer casing 19. Then, based on the existing connection The ferrule 23 is fitted to the sensor housing 19 such that the ultrasonic transducer 1 is properly held in the sensor housing 19. Finally, the wire 9 drawn from the ultrasonic transducer 1 is connected to the printed circuit board 25 and the printed circuit board 25 is assembled to the sensor housing 19, thereby completing the assembly of the sensor.
- the ultrasonic transducer When assembling a sensor including the ultrasonic transducer according to the present invention, since the ultrasonic transducer is provided with a positioning structure, the ultrasonic transducer can be accurately and quickly controlled by using a probe or a clip provided on the assembly stand. The angular deviation of the orientation of the ultrasonic transducer is controlled in the range of ⁇ 5° with respect to the orientation of the sensor housing. Therefore, the accuracy of the measurement results of the reversing radar system including the ultrasonic transducer according to the present invention can be remarkably improved.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
Description
超声波换能器、 传感器和倒车雷达系统 技术领域 Ultrasonic transducer, sensor and parking radar system
本发明涉及一种超声波换能器、 一种包括超声波换能器的传感器、 以 及一种包括超声波换能器的倒车雷达系统。 背景技术 The present invention relates to an ultrasonic transducer, a sensor including an ultrasonic transducer, and a parking radar system including an ultrasonic transducer. Background technique
倒车雷达系统通常包括电子控制单元、 超声波传感器以及显示器或蜂 鸣器。 超声波传感器用于发射以及接收超声波信号， 通过超声波传感器 可以测量到被测物体的距离。 电子控制单元用于发射正弦波脉冲给超声 波传感器， 并处理从超声波传感器接收的信号， 换算出距离值后， 将数 据与显示器或蜂鸣器通讯。 显示器或蜂鸣器从电子控制单元接收距离数 据， 并根据距离远近显示距离值和提供不同级别的距离报警音。 Parking sensor systems typically include an electronic control unit, an ultrasonic sensor, and a display or buzzer. Ultrasonic sensors are used to transmit and receive ultrasonic signals, and ultrasonic sensors can measure the distance to the object being measured. The electronic control unit is used to transmit a sine wave pulse to the ultrasonic sensor and process the signal received from the ultrasonic sensor. After converting the distance value, the data is communicated with the display or the buzzer. The display or buzzer receives distance data from the electronic control unit and displays distance values based on distance and provides different levels of distance alarm sounds.
超声波传感器通常包括套圈、 超声波换能器、 橡胶圈、 外壳以及印刷 电路板。 超声波换能器具有两个相互垂直的定向， 如果将其中一个方向称 为水平定向， 另一定向则为垂直定向。 在组装超声波传感器时， 应确保超 声波换能器的水平定向和垂直定向分别与外壳的水平定向和垂直定向平 行。 超声波传感器的组装过程比较烦琐、 复杂。 在组装过程中超声波换能 器的定向必须被精确控制， 否则会影响倒车雷达系统的测量结果的准确性。 在现有技术中， 超声波换能器的定向通过超声波换能器外侧的台阶与橡胶 圈内侧的台阶之间的配合以及橡胶圈上另外的台阶与外壳上的台阶之间的 配合来实现。 为了使超声波换能器的定向被精确控制， 通常通过手动操作 地转动超声波换能器来调整其定向。 但是， 由于橡胶圈较软， 不能通过机 械方式固定，超声波换能器的定向容易出现偏差，其偏差角度可以达到 ±10°, 这大大降低了倒车雷达系统的测量结果的精度。 Ultrasonic sensors typically include a ferrule, an ultrasonic transducer, a rubber ring, a housing, and a printed circuit board. The ultrasonic transducer has two mutually perpendicular orientations, if one of the directions is referred to as a horizontal orientation and the other orientation is a vertical orientation. When assembling the ultrasonic sensor, it should be ensured that the horizontal orientation and the vertical orientation of the ultrasonic transducer are respectively parallel to the horizontal and vertical orientation of the outer casing. The assembly process of the ultrasonic sensor is cumbersome and complicated. The orientation of the ultrasonic transducer must be precisely controlled during assembly, otherwise it will affect the accuracy of the measurement results of the parking radar system. In the prior art, the orientation of the ultrasonic transducer is achieved by the cooperation between the step on the outer side of the ultrasonic transducer and the step on the inside of the rubber ring and the cooperation between the additional step on the rubber ring and the step on the outer casing. In order for the orientation of the ultrasonic transducer to be precisely controlled, the orientation of the ultrasonic transducer is typically adjusted by manually operating the ultrasonic transducer. However, because the rubber ring is soft, it cannot pass the machine. The mechanical mode is fixed, the orientation of the ultrasonic transducer is prone to deviation, and the deviation angle can reach ±10°, which greatly reduces the accuracy of the measurement result of the reversing radar system.
因此， 需要一种改进的超声波换能器、 以及包括这种超声波换能器的 传感器和倒车雷达系统。 发明内容 Accordingly, there is a need for an improved ultrasonic transducer, and a sensor and reversing radar system including such an ultrasonic transducer. Summary of the invention
本发明的目的是为了克服上述现有技术中存在的缺点， 提供一种超声 波换能器， 这种超声波换能器的定向能够被精确地控制， 从而降低超声波 换能器的定向的角度偏差。 本发明还提供包括这种超声波换能器的传感器 和倒车雷达系统。 SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-discussed shortcomings of the prior art and to provide an ultrasonic transducer whose orientation can be accurately controlled to reduce the angular deviation of the orientation of the ultrasonic transducer. The present invention also provides a sensor and a reversing radar system including such an ultrasonic transducer.
本发明的上述目的通过这样一种超声波换能器来实现， 该超声波换能 器包括： The above object of the present invention is achieved by an ultrasonic transducer comprising:
壳体， 在所述壳体上形成有内腔； a housing having an inner cavity formed therein;
设置在所述内腔中的压电材料片以及复合材料； 以及 Piezoelectric material sheets and composite materials disposed in the inner cavity;
从所述内腔引出的导线； a wire drawn from the inner cavity;
其特征在于， 在所述壳体的端侧壁上设置有用于确定所述超声波换能 器的定向的定位结构。 It is characterized in that a positioning structure for determining the orientation of the ultrasonic transducer is provided on the end side wall of the casing.
优选地， 所述定位结构是形成在所述端侧壁上的至少两个孔。 Preferably, the positioning structure is at least two holes formed on the end side walls.
优选地， 所述定位结构是形成在所述端侧壁上的至少两个突起部。 根据本发明的传感器包括： 橡胶圈； 以及 Preferably, the positioning structure is at least two protrusions formed on the end side walls. A sensor according to the present invention includes: a rubber ring;
超声波换能器， 所述超声波换能器套设在所述橡胶圈中并收容在 外壳内， 所述超声波换能器包括： An ultrasonic transducer, the ultrasonic transducer is sleeved in the rubber ring and housed in Within the housing, the ultrasonic transducer includes:
壳体， 在所述壳体上形成有内腔； a housing having an inner cavity formed therein;
设置在所述内腔中的压电材料片以及复合材料； 以及 Piezoelectric material sheets and composite materials disposed in the inner cavity;
从所述内腔引出的导线； a wire drawn from the inner cavity;
其特征在于， 在所述壳体的端侧壁上设置有定位结构， 用于确定所述 超声波换能器的定向以控制所述超声波换能器相对于所述传感器外壳的定 向。 Characterized in that a positioning structure is provided on the end side wall of the housing for determining the orientation of the ultrasonic transducer to control the orientation of the ultrasonic transducer relative to the sensor housing.
根据本发明的倒车雷达系统包括如上所述的超声波换能器或者如上所 述的传感器。 The parking reversing radar system according to the present invention includes the ultrasonic transducer as described above or the sensor as described above.
根据本发明可以精确并且快捷方便地控制超声波换能器相对于传感器 外壳的定向， 从而显著提高倒车雷达系统的测量结果的精度。 附图说明 According to the present invention, the orientation of the ultrasonic transducer relative to the sensor housing can be controlled accurately, quickly and conveniently, thereby significantly improving the accuracy of the measurement results of the parking sensor system. DRAWINGS
图 1显示了根据本发明的超声波换能器的立体图； Figure 1 shows a perspective view of an ultrasonic transducer in accordance with the present invention;
图 2显示了根据本发明的超声波换能器的主视图； Figure 2 shows a front view of an ultrasonic transducer in accordance with the present invention;
图 3显示了根据本发明的超声波换能器的侧视图； 以及 Figure 3 shows a side view of an ultrasonic transducer in accordance with the present invention;
图 4显示了包括根据本发明的超声波换能器的传感器的分解立体图。 具体实施方式 Fig. 4 shows an exploded perspective view of a sensor including an ultrasonic transducer according to the present invention. detailed description
以下参考图 1-4 详细描述根据本发明的超声波换能器和传感器。 如图 Ultrasonic transducers and sensors in accordance with the present invention are described in detail below with reference to Figures 1-4. As shown
1-3所示， 根据本发明的超声波换能器 1包括大体圆柱形的壳体 3。 壳体 3 通常由铝制成。在壳体 3上形成有内腔 5。根据需要， 内腔 5可以具有规则 或不规则形状。 压电材料片 （未示出） 粘附在内腔 5中并且在内腔 5中填 充了所需的复合材料 7。从内腔 5并经由复合材料引出用于与印刷电路板连 接的导线 9。 As shown in Figures 1-3, the ultrasonic transducer 1 according to the present invention comprises a generally cylindrical housing 3. The housing 3 is usually made of aluminum. A lumen 5 is formed in the housing 3. The inner cavity 5 may have a regular or irregular shape as needed. A sheet of piezoelectric material (not shown) is adhered to the inner cavity 5 and filled in the inner cavity 5 Filled with the required composite material 7. Wires 9 for connection to the printed circuit board are taken from the inner cavity 5 and via the composite material.
与现有技术不同， 根据本发明的超声波换能器 1的壳体 3的端侧壁 11 上设置有用于确定超声波换能器 1的定向的定位结构 13。 只要能够确保超 声波换能器 1 的水平定向和垂直定向分别与最终形成的超声波传感器的外 壳 19 (如图 4所示）的水平定向和垂直定向平行， 定位结构 13可以是任何 合适的结构。优选地， 定位结构 13可以是形成在端侧壁 11上的两个孔 15。 两个孔 15可以随机地分布在端侧壁 11上。 当然， 孔 15的数量可以多于两 个。 替代地， 定位结构 13可以是形成在端侧壁 11上的两个突起部 （未示 出）。 两个突起部可以随机地分布在端侧壁 11 上。 当然， 突起部的数量可 以多于两个。 Unlike the prior art, the end wall 11 of the housing 3 of the ultrasonic transducer 1 according to the present invention is provided with a positioning structure 13 for determining the orientation of the ultrasonic transducer 1. The positioning structure 13 can be any suitable structure as long as it can ensure that the horizontal and vertical orientations of the ultrasonic transducer 1 are respectively parallel to the horizontal and vertical orientations of the outer casing 19 (shown in Figure 4) of the finally formed ultrasonic sensor. Preferably, the positioning structure 13 may be two holes 15 formed in the end side walls 11. The two holes 15 can be randomly distributed on the end side walls 11. Of course, the number of holes 15 can be more than two. Alternatively, the positioning structure 13 may be two protrusions (not shown) formed on the end side walls 11. The two protrusions may be randomly distributed on the end side wall 11. Of course, the number of protrusions can be more than two.
图 4显示了包括根据本发明的超声波换能器的传感器 17。 在组装传感 器 17时， 先将传感器外壳 19固定在装配台架 （未示出） 上， 将超声波换 能器 1插入橡胶圈 21中并且确保超声波换能器 1上的定位结构 13不会被 橡胶圈 21遮挡。 在定位结构 13是孔的情况下， 将装配台架上设置的探针 (未示出）插入孔中。由于探针相对于传感器外壳 19的定向是预先设定的， 因而只需简单地将探针插入超声波换能器 1 上的孔中， 就可以精确并且快 捷方便地控制超声波换能器 1相对于传感器外壳 19的定向。 替代地， 在定 位结构 13是突起部的情况下， 利用装配台架上设置的夹子 （未示出） 夹住 突起部。 由于夹子相对于传感器外壳 19的定向是预先设定的， 因而只需简 单地用夹子夹住超声波换能器 1 上的突起部， 就可以精确并且快捷方便地 控制超声波换能器 1相对于传感器外壳 19的定向。 接着， 根据现有连接方 式将套圈 23装配到传感器外壳 19上， 从而使超声波换能器 1被合适地保 持在传感器外壳 19中。 最后， 将从超声波换能器 1引出的导线 9与印刷电 路板 25连接并将印刷电路板 25装配到传感器外壳 19上， 从而完成传感器 的组装。 Figure 4 shows a sensor 17 comprising an ultrasonic transducer according to the invention. When the sensor 17 is assembled, the sensor housing 19 is first fixed to an assembly stand (not shown), the ultrasonic transducer 1 is inserted into the rubber ring 21 and the positioning structure 13 on the ultrasonic transducer 1 is ensured not to be rubberized. Circle 21 is blocked. In the case where the positioning structure 13 is a hole, a probe (not shown) provided on the assembly stage is inserted into the hole. Since the orientation of the probe relative to the sensor housing 19 is preset, it is only necessary to simply insert the probe into the hole in the ultrasonic transducer 1 to accurately and quickly and conveniently control the ultrasonic transducer 1 relative to The orientation of the sensor housing 19. Alternatively, in the case where the positioning structure 13 is a projection, the projection is held by a clip (not shown) provided on the assembly stand. Since the orientation of the clip relative to the sensor housing 19 is preset, the ultrasonic transducer 1 can be accurately and quickly controlled relative to the sensor simply by clamping the protrusion on the ultrasonic transducer 1 with a clip. The orientation of the outer casing 19. Then, based on the existing connection The ferrule 23 is fitted to the sensor housing 19 such that the ultrasonic transducer 1 is properly held in the sensor housing 19. Finally, the wire 9 drawn from the ultrasonic transducer 1 is connected to the printed circuit board 25 and the printed circuit board 25 is assembled to the sensor housing 19, thereby completing the assembly of the sensor.
在组装包括根据本发明的超声波换能器的传感器时， 由于超声波换能 器上设置有定位结构， 通过利用装配台架上设置的探针或夹子， 可以精确 并且快捷方便地控制超声波换能器相对于传感器外壳的定向， 从而使得超 声波换能器的定向的角度偏差被控制在 ±5°的范围。 因此， 包括根据本发明 的超声波换能器的倒车雷达系统的测量结果的精度可以被显著提高。 When assembling a sensor including the ultrasonic transducer according to the present invention, since the ultrasonic transducer is provided with a positioning structure, the ultrasonic transducer can be accurately and quickly controlled by using a probe or a clip provided on the assembly stand. The angular deviation of the orientation of the ultrasonic transducer is controlled in the range of ±5° with respect to the orientation of the sensor housing. Therefore, the accuracy of the measurement results of the reversing radar system including the ultrasonic transducer according to the present invention can be remarkably improved.
以上参照优选实施例描述了根据本发明的超声波换能器。 但是， 本领 域技术人员应该理解的是， 在不脱离权利要求书限定的范围的情况下， 还 可以对根据本发明的超声波换能器进行各种改进或替换。 The ultrasonic transducer according to the present invention has been described above with reference to the preferred embodiments. However, it will be understood by those skilled in the art that various modifications or substitutions can be made to the ultrasonic transducers in accordance with the present invention without departing from the scope of the claims.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120127369.0U CN202075408U (en) | 2011-04-22 | 2011-04-22 | Ultrasonic transducer, sensor and reverse radar system |
| CN201120127369.0 | 2011-04-22 |
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| Publication Number | Publication Date |
|---|---|
| WO2012142965A1 true WO2012142965A1 (en) | 2012-10-26 |
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| PCT/CN2012/074442 Ceased WO2012142965A1 (en) | 2011-04-22 | 2012-04-20 | Ultrasonic transducer, sensor, and reversing radar system |
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| CN (1) | CN202075408U (en) |
| WO (1) | WO2012142965A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202075408U (en) * | 2011-04-22 | 2011-12-14 | 博世汽车部件(苏州)有限公司 | Ultrasonic transducer, sensor and reverse radar system |
| CN106908799A (en) * | 2015-12-23 | 2017-06-30 | 法雷奥汽车内部控制（深圳）有限公司 | A kind of ultrasonic sensor |
| CN106199615A (en) * | 2016-09-12 | 2016-12-07 | 广州市佑航电子有限公司 | Piezoelectric ceramic piece and there is the ultrasonic sensor of this piezoelectric ceramic piece |
| DE102019202144A1 (en) * | 2019-02-18 | 2020-08-20 | Vega Grieshaber Kg | Radar sensor for factory and logistics automation |
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| CN1841087A (en) * | 2005-03-29 | 2006-10-04 | 株式会社电装 | ultrasonic sensor |
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| CN101038339A (en) * | 2006-03-15 | 2007-09-19 | 株式会社电装 | Ultrasonic sensor |
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| WO2008129627A1 (en) * | 2007-04-11 | 2008-10-30 | Fukoku Co., Ltd. | Piezoelectric vibrator unit, and piezoelectric vibrator unit case member |
| TW201033050A (en) * | 2009-03-10 | 2010-09-16 | shi-xiong Li | Anti-EMI ultrasonic probe |
| CN202075408U (en) * | 2011-04-22 | 2011-12-14 | 博世汽车部件(苏州)有限公司 | Ultrasonic transducer, sensor and reverse radar system |
-
2011
- 2011-04-22 CN CN201120127369.0U patent/CN202075408U/en not_active Expired - Lifetime
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| DE3939387A1 (en) * | 1989-11-29 | 1991-06-06 | Swf Auto Electric Gmbh | Ultrasonic distance warning system esp. for motor vehicles - has aperture covering membrane carrying piezo-plate to eliminate group echos |
| EP0881624A2 (en) * | 1997-05-30 | 1998-12-02 | Denso Corporation | Ultrasonic sensor and its ultrasonic resonator |
| CN1289435A (en) * | 1998-04-14 | 2001-03-28 | Trw车辆电气与零件有限两合公司 | Contact Elecment for an ultrasound sensor |
| CN1841087A (en) * | 2005-03-29 | 2006-10-04 | 株式会社电装 | ultrasonic sensor |
| CN101038338A (en) * | 2006-03-15 | 2007-09-19 | 株式会社电装 | Ultrasonic sensor |
| CN101038339A (en) * | 2006-03-15 | 2007-09-19 | 株式会社电装 | Ultrasonic sensor |
| CN101055313A (en) * | 2006-04-10 | 2007-10-17 | 株式会社电装 | Ultrasonic sensor |
| WO2008129627A1 (en) * | 2007-04-11 | 2008-10-30 | Fukoku Co., Ltd. | Piezoelectric vibrator unit, and piezoelectric vibrator unit case member |
| TW201033050A (en) * | 2009-03-10 | 2010-09-16 | shi-xiong Li | Anti-EMI ultrasonic probe |
| CN202075408U (en) * | 2011-04-22 | 2011-12-14 | 博世汽车部件(苏州)有限公司 | Ultrasonic transducer, sensor and reverse radar system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202075408U (en) | 2011-12-14 |
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