Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Patent
1986-03-10
1990-01-02
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Echo systems
Returned signal used for control
367 99, 340582, G01S 1593
Patent
active
048917966
ABSTRACT:
This invention provides an icing preventive device for a supersonic wave transmitting and receiving unit for a vehicle which is composed of a timing device for outputting a timing signal, a supersonic wave transmitting and receiving device for transmitting a supersonic wave signal and receiving a reflected wave in response to the timing signal, a received signal processing device for amplifying the received signal caused by the reflected wave and processing the waveform of the amplified signal, a control device for controlling a vehicle load in response to the received signal of which waveform is processed, a temperature sensing device for sensing a temperature outside the vehicle, a heater operating device for energizing and heating the heater in response to both decrease in the temperature outside the vehicle and a level of the received signal of the reflected wave, and a heater arranged in the supersonic wave transmitting and receiving device, and further the present invention discloses the technology of the heater operating device composed of an electronic circuit in particular and invented a device which can perform a rational operation and an automatic icing preventive operation in the supersonic wave transmitting and receiving unit.
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"Road Ice Detector"; National Detector Report, vol. 24, No. 3; Japan, Jun. 1978; pp. 526-538 and translation; Sato et al.
Kananen Ronald P.
Niles Parts Co., Ltd.
Swann Tod
Tarcza Thomas H.
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