3 results about "Dsp digital signal processor" patented technology

The invention provides a high-power high-reliability voltage retainer used for an automobile starting and stopping system. The high-power high-reliability voltage retainer is higher in power and reliability and smaller in size and ripple. The high-power high-reliability voltage retainer comprises a through circuit module (1), a booster circuit module (2), a reversed polarity circuit module (3), a CAN transceiver (4), a CPU (5), a DSP (digital signal processor) (6) and a battery. A battery input port and a battery output port are formed in the through circuit module (1), a battery input port and a battery output port are formed in the booster circuit module (2), and the reversed polarity circuit module (3) is electrically connected with the booster circuit module (2); the CAN transceiver (4), the CPU (5) and the DSP (6) are sequentially and electrically connected; the CPU (5) is electrically connected with the through circuit module (1), and the DSP (6) is electrically connected with the through circuit module (1); the DSP (6) is electrically connected with the booster circuit module (2).

The invention provides a spatial orientation active noise reduction system and method. The spatial orientation active noise reduction system comprises a signal input module, a signal processing module and a signal output module, the signal input module comprises a reference microphone for collecting a target noise signal and an error microphone for collecting a residual noise signal; the signal processing module comprises an analog-to-digital converter, a DSP digital signal processor, a digital-to-analog converter and a power amplifier. The DSP digital signal processor processes an input target noise signal and a residual noise signal based on an adaptive filtering algorithm to generate a secondary noise control signal; the signal output module comprises a secondary loudspeaker for emitting secondary sound waves; the reference microphone, the error microphone and the secondary loudspeaker are arranged along the same linear direction, and the secondary sound wave is propagated along the linear direction and destructively interferes with the target noise to realize noise reduction. The method is particularly suitable for application scenes with clear noise source directions, and effective noise reduction in a large space range can be achieved with few hardware resources.

The invention discloses an airborne heterogeneous computing general control board card based on DSP and FPGA, which comprises a discrete magnitude circuit, an analog quantity circuit, a reset circuit, two external connectors, a DSP processor and an FPGA circuit, the input end of the DSP processor and the input end of the FPGA circuit are connected with a power supply circuit, the DSP processor and the FPGA circuit are in communication connection through Xintf, and the FPGA circuit is in communication connection with the DSP processor. An ADC interface of the DSP processor is connected with an ADC converter with a voltage stabilizer; the DSP is matched with the FPGA programmable logic array control architecture, 16-bit ADC conversion, Flash and RAM circuits are externally expanded, the functions of collection, data processing, storage, communication and data recording are integrated, the expansibility and universality are high, the FPGA is high in flexibility and has the parallel processing capacity, different application scenes and requirements can be adapted through reprogramming, and the application range is wide. And the comprehensive requirements of an airborne environment on high-intensity numerical calculation, strong real-time response and high-universality interface control are met.