Honda Electronics Co., Ltd.

Kazuki Higuchi

Kenji Nagareda

Shuichi Sano

The flasher-type multi-frequency fish finder includes a wideband ultrasonic transducer, a display-rotating disk, a motor and a control device. The plurality of display LEDs are composed of the first, second and third display LEDs. The control device has a signal-separating and obtaining part and a light-emission signal-producing part. The signal-separating and obtaining part separates the reflected signal and obtains the first reflected signal corresponding to the high frequency, the second reflected signal corresponding to the medium frequency, and the third reflected signal corresponding to the low frequency. The light-emission signal-producing part generates first, second and third light-emission signals based on the first, second and third reflection signals, respectively. The first, second and third annular-display regions are concentrically set on the display surface. Underwater detection results by high frequency, medium frequency and low frequency ultrasonic waves are simultaneously indicated by a flashing light in the first, second and third annular-display regions.

Flasher type multi-frequency fish finder

Disclosed is a tidal current meter that measures the velocity of a tidal current. The tidal current meter includes an oscillator, a calculation section, a depression angle setup section, and a drive section. The oscillator is capable of transmitting an ultrasonic wave into water and receiving the reflection of the transmitted ultrasonic wave. The calculation section calculates the velocity in accordance with the Doppler shift frequency of the reflection received by the oscillator. The depression angle setup section sets a depression angle, that is, the angle formed by the transmission direction of the ultrasonic wave and a horizontal plane. The drive section drives the oscillator in such a manner as to transmit the ultrasonic wave and receive the reflection of the transmitted ultrasonic wave at the depression angle set by the depression angle setup section.

Growing community of inventors

Toyohashi, Japan

Kazuki Higuchi