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Применить Всего найдено 2. Отображено 2.
25-08-2023 дата публикации

Array type ultrasonic vehicle detection system

Номер: CN116645819A
Автор: PENG YONG, WENG QICAI, ZHANG JIAWEI, SHENG XUFENG, WANG JING, ZHU MINGHAO
Принадлежит:

The invention relates to the technical field of road traffic intelligent detection devices, in particular to an array type ultrasonic vehicle detection system which comprises ultrasonic beacons arranged along the two sides of a highway at equal intervals, every two adjacent beacons are connected through a cable, every 50 beacons form a group, a base station is arranged in each group of beacons, and the base station is connected with the ultrasonic beacons. The base stations are edge computing units MEC, and the base stations are arranged on side guardrails on the two sides of the expressway; according to the invention, the dynamic sensing of the vehicle position in the whole road section can be realized with lower cost, the functions of early warning in the vehicle and the induction indicating lamp can be provided, the influence of adverse factors such as severe weather and illumination is avoided, all-weather road sensing and driving induction are realized, and the system is more reliable ...

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Номер записи: 1
06-07-2011 дата публикации

Fast Walsh transform realization method based on FPGA (Field Programmable Gate Array)

Номер: CN0102117264A
Автор: HONG CHEN, SHENGJUN XIONG, QICAI WENG, WEI WANG, YALONG HE, FEILING HE, JINLING GONG, CHEN HONG, XIONG SHENGJUN, WENG QICAI, WANG WEI, HE YALONG, HE FEILING, GONG JINLING
Принадлежит:

The invention discloses a fast Walsh transform realization method based on FPGA (Field Programmable Gate Array). The method comprises the following steps: a two-port SRAM (Static Random Access Memory) is taken as the intermediate stage of the piped stage; an arithmetic unit is arranged between every two two-port SRAMs; one group of piped stage structure is provided with ten groups of two-port SRAMs; and two groups of piped stages are provided and connected with each other through a ping-pong buffer structure. The fast Walsh transform realization method based on FPGA has the following benefits: if the method is adopted to realize the fast Walsh transform algorithm, the operation time can be effectively shortened; the design can effectively reduce product cost and the design size of the product; and compared with a traditional circuit design, the design can effectively reduce the research and development time.

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Номер записи: 2