Design of Intelligent Video Surveillance Image Processing Circuit Module Based on DSP

Probe domestic high frequency needle JKT-50L high frequency needle with 3 probes

L0504-Murata muRata common mode inductor 90Ω 150mA

The system uses the TI TMS320C6211 chip to process images taken by the camera and A/D converted. After the image is compressed by the DSP, the HP's HPI port is uploaded to the host computer through the TI PCI2040 chip, and communicates with the PCI bus of the host computer. The key to the system design is the design of the video processing card. Since the video cards that can be purchased in the market generally have limited functions and cannot meet the needs of the project, a video card is designed by itself.

This monitoring system uses a TI TPS3307-33D as the power detection IC. The device is defined to have a /Reset output valid signal when it is powered 1.1V. As shown in Figure 4, in this system, the circuit can monitor the three supply voltages of 5V, 3.3V and 1.8V, and can simultaneously power-on reset the three devices of the system (C6211, EPLD and AT89C2051). And manual reset.

Figure 4 TPS3307 power supply monitoring circuit

The +3.3V is the voltage required by the I/O interface of the TMS320C6211. This is the peripheral interface voltage of the DSP and must be able to maintain stable and continuous power supply. The external SDRAM and FLASH ROM are both 3.3V devices. If the voltage is unstable, these devices cannot work stably, which may cause loss or even burn them. The +1.8V power supply is required to meet the CPU core operating voltage requirements of the TMS320C6211. For the TMS320C6211, its operating frequency is 150MHz, which is very sensitive to voltage changes. If the voltage is too high, the device will be damaged. If the voltage is too low, the chip will automatically reset.