"Vehicle uses a series of sensors to measure pressure, temperature, position, velocity, humidity, and occupancy parameters, as well as a sensor for more advanced driver assistance systems (the ADAS) and the photographing lens article lists 10 for all kinds of sensors for automotive applications (without any particular order), a license is also designed to guide the direction of the engineer.
With the advent of new technologies and new features, designed for automotive applications is becoming increasingly challenging, so as to promote a modern car with the number and type of sensors is increasing. The latest (possibly the largest) is the driving force of the two autopilot and security systems.
Vehicle using a series of sensors to measure pressure, temperature, position, velocity, humidity, and occupancy parameters, there are more and more used in advanced driver assistance systems (the ADAS) and the photographic lens of the sensor. 10 kinds of sensors adapted to a variety of automotive applications listed below (without any particular order), a license is also designed to guide the direction of the engineer.
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1.OmniVision OV9284 global shutter image sensor
OmniVision's OV9284 100 megapixels global shutter for image sensors monitor vehicle, having a small size, low power consumption and excellent near infrared (NIR) quantum efficiency (QE) and other characteristics. It meets the new safety regulations semi-autonomous driving car L3 level, where the driving condition monitoring (DSM) for tracking the driver's line of sight. OmniVision said, OV9284 has the best NIR quantum efficiency drive monitor image sensor products, up 12% at 940nm.
In addition, at 60 frames per second hearing (fps) power consumption is 90mW, allegedly more than the nearest competitor by 30%. OmniPixel 3-GS using a global shutter sensor technology at speeds up to 120fps video can provide a resolution of 1,280 × 800, which uses 5,237 × 4,463μm chip-scale package.
1 OmniVision OV9284 view of the driving state of the monitor application to provide a small size, low power consumption and excellent NIR QE function.
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2.TDK IAM-20680 and IAM-20680HP IMU
TDK subsidiary InvenSense launched a series of new automotive high-precision MEMS motion sensors. "Motion tracking" car regulatory level IAM-20680 and IAM-20680HP six-axis inertial measurement unit (IMU) can help improve the GNSS and GPS weak signal environments (such as tunnels, parking lots and urban canyons) absolute addressing vehicle. TDK said that when the satellite is poor or no connectivity, these MEMS sensors can improve vehicle position, direction and speed estimation accuracy, and when a strong satellite signal can also improve the quality of the position estimate.
IAM-20680 allegedly is the smallest six-axis level sensor car rules (a combination of three-axis gyroscope and three-axis accelerometer), is the only has a mass for a vehicle having an accelerometer 16 and gyro 16 component analyzer series. Operating temperature range of -40 ° C ~ 85 ° C, if more powerful and higher temperature range IMU, IAM-20680 high performance version may be provided IAM-20680HP -40 ° C ~ 105 ° C extended operating temperature range, and higher thermal stability and disorders gyroscope. It is fully compatible in the pin, and the package of the registers and IAM-20680.
In addition, IAM-20680 and IAM-20680HP be integrated into the new InvenSense Coursa Drive software solution, which is designed for automatic driving vehicle (AV) platform designed for developers inertia assisted positioning software. Coursa Drive is positioned InvenSense library (IPL), high-performance expansion; the vehicle using only inertial positioning accuracy can be increased to that with <0.2% of the distance, the GNSS / perceptual system environment is well maintained vehicle lane inch class positioning accuracy required to achieve this.
FIG 2 TDK six-axis IAM-20680HP IAM-20680, and has excellent temperature stability, can navigate the driver in challenging environments, its low sensitivity error can be properly maintained car steering.
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The optical sensor 3.Vishay VCNL4030X01
Vishay's VCNL4030X01 in a 4 × 2.36 × 0.75mm small adhesion surface of the package, the integrated photodetector for detecting proximity and ambient light, and signal conditioning IC, 16-bit ADC and power IRED, the application may be a multi-sensor save board space, enhanced design flexibility. This proximity and ambient light detection sensor in line with AEC-Q101 standards, feature-rich, suitable for a variety of applications, including mobile devices, smart home, industrial and automotive.
FIG 3 Vishay's VCNL4030X01 integrated in a small surface mount package within a photodetector for detecting proximity and ambient light, and signal conditioning IC, 16-bit ADC and power IRED.
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Said Vishay, with its Filtron technology, the sensor may make the environment close to the spectral sensitivity of the human eye, while having excellent capability to eliminate the background light. Further, this sensor also has a programming interrupt function can be set high threshold and a low threshold to reduce overall power consumption.
VCNL4030X01 photodiode having a built environment 0.004lx ~ 4.2klx detection capability, so that the assembly can work in a dark or transparent lens. The use of smart VCNL4030X01 proximity sensor to eliminate cross-talk cancellation, persistence intelligence schemes can provide fast response time and accuracy when an object is detected. Furthermore, the component may be detected from the most as far as the object of 300mm.
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4.VG5661 global shutter and the image sensor VG5761
The other two sensors for automotive safety systems are VG5661 and VG5761 global shutter image sensor can be used to drive monitoring system. They capture a scene taken from the camera, eliminating external influences such as sunlight or street lighting to enhance passenger vehicle monitoring system to monitor and improve driving, especially at near 940nm near-infrared illumination. Both sensors are also new features appear in applications, such as the assessment driving attention, passenger comfort or children's behavior.
VG5661 and VG5761 were 1.6 million pixels and 2.3 million pixel sensor of the vehicle. STMicroelectronics (STMicroelectronics) global shutter pixel automobiles using two storage units and small pixels of 3.2μm, even in challenging environments can also provide a small-sized and high-resolution images in order to obtain clearer images. Two storage areas available in dual image storage, of up to 98dB dynamic range, or highly linear hysteresis-free after background removal.
It also eliminates the additional processing burden on the host system's. High dynamic range of the near infrared wavelength and a high-profile-varying transfer function to minimize the interference of natural light. These sensors AEC-Q100 qualified second standard, and have the required safety integrity ASIL-B imaging system, in line with Motor Vehicle Safety Standard ISO 26262.
FIG 4 STMicroelectronics VG5661 and VG5761 standard BGA package or die may be integrated directly into the automotive OEM system.
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5.ams AS5200L position sensor
ams dual die AS5200L magnetic rotational position sensor with I2C interface with an AEC-Q100 standard, the requirements for high precision, small size and high redundancy automobile safety applications. Target applications include electric power transmitting remote control function, for example a conventional wire lever shift and rotation of the transmission, and a pedal application.
AS5200L having immunity to stray magnetic fields, thus providing high accuracy and repeatable measurements in noisy magnetic environments. Which stack is arranged using the die, which means that they can be paired with a single small target magnet, while the same measurement results from the output of each die. Each die has a separate package pins to prevent an electrical fault affected component two dies.
6. The sensor TI AWR1642
Although already launched more than a year, TI's automotive millimeter wave (mmWave) sensor is still worth mentioning, it is suitable, including long-distance, short-range and medium range radar of ADAS applications. AWR1642 millimeter wave sensor is a vehicle level regulation of highly integrated ultra-wideband sensors, can also be used and free space around the obstacle detection after the car doors and boxes, occupancy cabin, as well as intrusion alarms and automatic parking and other intelligence.
This monolithic FMCW radar sensor operates at 76 ~ 81GHz frequency band, integrated DSP subsystem, including the C674x DSP for signal processing in the radar, radio and for configuration, control and calibration Arm R4F processor subsystem. The pitch of 0.65mm chip, pin 161, a size of 10.4 × 10.4mm flip chip BGA package. Supporting the chip software development kit, sample configurations, and other resources designed to help reduce development time. Detecting a vehicle occupant is exemplary reference design, provides a system-level overview of and how to use the sensor to detect software AWR1642 example of occupants.
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7.Velodyne of VelaDome, Velarray and Vella
LIDAR (LiDAR) sensor and automatic driving is crucial in ADAS car, but there are still some limitations, particularly in terms of cost and technical issues (such as range and resolution) terms (see "autonomous vehicles and LiDAR sensors truth (Autonomous vehicles and the truth about LiDAR sensors) "article). Velodyne is a significant progress in terms of higher-order LiDAR sensor technology driving safety systems company, although no specific product parameters, but still worth a visit Velodyne's latest products, including VelaDome, Velarray and Vella.
Is a small embedded VelaDome the LiDAR, said to be the industry's first short-range wide-field sensor, for near targets and to avoid blind spot monitoring, provides wide images of 180 ° × 180 °, and can detect a distance to the nearest 0.1 meter objects.
FIG 5 ams vehicle level gauge sensor using MLF-16 package, designed for the hybrid, and battery swap file conventional vehicle position detection design.
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Vella is the company's ADAS solutions, based on the orientation view (day or night) Velarray LiDAR sensors, object recognition is expected to achieve faster and longer braking distance on a highway. Target applications include lane keeping assist, automatic emergency braking (AEB) and the self-adjustment cruise control.
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8.ACEINNA of IMU381ZA IMU
Like IMU381ZA IMU ACEINNA such integrated inertia sensing module sensing function may alternatively plurality in a single component, not only saves space, reduces the number of the BOM, and can reduce cost and development time.
Six degrees of freedom (the DOF), with optional IMU381ZA axis magnetic sensor may measure acceleration up to 4g, there is provided 3 ~ 5.5V supply voltage, and is operable (from -40 ° C ~ 85 over a wide temperature range ° C). Further, it is a small package size of 24 × 37 × 9.5mm, can provide a wide range of standard and two models, and evaluation kits are available.
381ZA-200 can be small package of FIG. 6 ACEINNA various alternative sensing function.
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9.Quanergy S3 solid-state laser radar
Quanergy believe will help reduce the cost of solid-state LiDAR LiDAR solutions. Since no moving parts, S3-2 may provide high reliability, while consuming less power. The company which LiDAR sensor S3 and solid objects QORTEX analysis software combination used to analyze 3D point cloud data, to perform object detection, tracking and classification of high security features. Artificial intelligence (AI) software object can be detected based on data collected by the one or more sensors LiDAR.
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10.Vayyar 3D image sensor
Vayyar Imaging sensor may provide a 3D image sensing 360 °, a clear understanding of the situation inside and outside the vehicle occurs. The millimeter wave 3D imaging system's single-chip (SoC) integrates transmitters 72 and receivers 72, and a high-order high resolution and high precision DSP. The SoC ranging from 3GHz ~ 81GHz band and radar imaging, no external CPU to implement complex imaging algorithms. In addition, it can work in any weather or light conditions, especially for automotive applications.
For automotive interior and exterior sensor 360 °, the sensor can detect and monitor the presence, location, position, distance, vital signs, and obstacles, which can detect more than 150K per second points of interest.
(Source: Electronic Products)
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