AR0230CS：逆光全高清人脸识别用2.1MP宽动态图像传感器
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收藏 959KB PDF 举报 AR0230CS是一款1/2.7英寸的2.1百万像素全高清数字图像传感器，专为逆光环境和人脸识别应用设计。这款新型传感器由SemiconductorComponentsIndustries,LLC制造，具有以下关键特性：
1. **卓越的低光性能**：得益于ON Semiconductor的DR-Pix™技术，该传感器在暗光条件下仍能提供出色的图像质量，支持双转换增益，确保在光线不足时也能捕捉清晰细节。
2. **高分辨率与帧率**：AR0230CS支持高达1080P的分辨率，并且能够以60fps的速率稳定录制视频，这对于监控和实时人脸识别等应用场景非常关键。
3. **线性或高动态范围**：它提供了两种拍摄模式，可以根据需要选择线性模式以保持细节层次分明，或者选择高动态范围模式来处理逆光场景，确保画面明暗对比适中。
4. **自适应局部调色映射（ALTM）**：此功能可以根据环境光线变化自动调整色彩校正，进一步增强图像质量。
5. **多接口选项**：传感器支持高速四线并行或串行HiSPi接口，以及SLVS和HiVCM差分信号，便于灵活连接不同类型的系统。
6. **内置功能**：包括PLL振荡器、内置位置基色校正和镜头阴影校正、精确帧率控制、立体/3D相机支持，以及统计引擎，提升了整体性能。
7. **配置灵活性**：AR0230CS允许快速的配置切换，以适应不同应用场景的需求。
8. **温度监测**：传感器内建有温度传感器，有助于监控工作环境条件并确保稳定运行。
9. **应用场景广泛**：这款传感器特别适用于视频监控领域，特别是对于1080p60（监控）视频应用，其出色性能是不可或缺的工具。
AR0230CS作为一款高性能的图像传感器，集成了多种先进的技术和特性，使得它在逆光环境下的人脸识别和其他智能监控系统中表现出色，是现代安防和智能化设备中的重要组件。
AR0230CS/D Rev. 8, Pub. 11/15 EN 7 ©Semiconductor Components Industries, LLC, 2015.
AR0230CS: 1/2.7-Inch 2.1 Mp/Full HD Digital Image Sensor
Functional Overview
Functional Overview
The AR0230CS is a progressive-scan sensor that generates a stream of pixel data at a
constant frame rate. It uses an on-chip, phase-locked loop (PLL) that can be optionally
enabled to generate all internal clocks from a single master input clock running between
6 and 48 MHz. The maximum output pixel rate is 148.5 Mp/s, corresponding to a clock
rate of 74.25 MHz. Figure 1 shows a block diagram of the sensor configured in linear
mode, and in HDR mode.
Figure 1: Block Diagram of AR0230CS
User interaction with the sensor is through the two-wire serial bus, which communi-
cates with the array control, analog signal chain, and digital signal chain. The core of the
sensor is a 2.1 Mp Active- Pixel Sensor array. The timing and control circuitry sequences
through the rows of the array, resetting and then reading each row in turn. In the time
interval between resetting a row and reading that row, the pixels in the row integrate
incident light. The exposure is controlled by varying the time interval between reset and
readout. Once a row has been read, the data from the columns is sequenced through an
analog signal chain (providing offset correction and gain), and then through an analog-
to-digital converter (ADC). The output from the ADC is a 12-bit value for each pixel in
the array. The ADC output passes through a digital processing signal chain (which
provides further data path corrections and applies digital gain). The sensor also offers a
Row Noise Correction
Black Level Correction
Test Pattern Generator
Pixel Defect Correction
Adaptive CD Filter
Digital Gain and Pedestal
A-Law Compression
Parallel
HiSPi
12 bits
10 bits
12
12
ADC Data
HDR Linearization
Smoothing Filter
Digital Gain and Pedestal
Companding or ALTM
Parallel HiSPi
12 bits
16
14 or 12 bits
16 bits
Row Noise Correction
Black Level Correction
Test Pattern Generator
Pixel Defect Correction
Adaptive CD Filter
Motion Correction
12
12
ADC Data
HDR Linearization
In Linear Mode In HDR Mode
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