Abstract: Disclosed are an automobile ultrasonic blind area detection device and detection method for preventing ground misdetection and misinformation. The detection device comprises a plurality of ultrasonic sensors, each ultrasonic sensor is arranged to form a certain angle with the longitudinal center line of an automobile, the detection directions of the ultrasonic sensors are spaced by set angles to respectively correspond to different directions from the far end to the near end of a side lane blind area; the detection distances of the ultrasonic sensors are different, and decrease gradually from the far end to the near end of the side lane blind area; ground misdetection signals of the ultrasonic sensors are shielded, and useful signals detected by the ultrasonic sensors are extracted and combined into far-near continuous long-distance detection signals to cover an automobile side lane exterior mirror blind area and a visible area behind the blind area more widely.

Abstract: The present invention discloses a hostless parking radar system, including a main sensor and a plurality of slave sensors arranged in parallel, wherein the main sensor includes a CPU module, a first digital pulse module, a first ultrasonic unit, and a plurality of digital pulse transmission modules arranged in parallel; the slave sensors include a second digital pulse module and a second ultrasonic unit; and the plurality of digital pulse transmission modules are respectively in communication with the first digital pulse module and the second digital pulse module by means of bidirectional transmission. In the present invention, the main sensor is provided with the CPU module, but none of the slave sensors has the CPU module, so that the cost of the system is greatly reduced. The main sensor communicates with the slave sensors by using digital pulse signals, so that the system works more reliably and stably.

Abstract: Automobile ultrasonic detection method and a sensor are provided. Specifically, a plurality of microphones in the sensor are controlled to work cooperatively, and the microphones respectively transmit or receive detection signals to or from the outside by adopting different working frequencies in a mutually spaced working time sequence; and in a detection cycle of a single microphone, the sensor completes multiple times of detection to improve the detection response speed of the sensor. Through specific drive and control of the electronic circuit unit on the microphones with different frequencies, the detection response speed of the ultrasonic sensor can be greatly improved. The sensor applied to an automobile also further improves the driving safety of the automobile.

Abstract: Automobile ultrasonic detection method and a sensor are provided. Specifically, a plurality of microphones in the sensor are controlled to work cooperatively, and the microphones respectively transmit or receive detection signals to or from the outside by adopting different working frequencies in a mutually spaced working time sequence; and in a detection cycle of a single microphone, the sensor completes multiple times of detection to improve the detection response speed of the sensor. Through specific drive and control of the electronic circuit unit on the microphones with different frequencies, the detection response speed of the ultrasonic sensor can be greatly improved. The sensor applied to an automobile also further improves the driving safety of the automobile.