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JPS57181651

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DESCRIPTION JPS57181651
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a state of distance
measurement between vehicles, FIG. 2 and FIG. 3 show an ultrasonic transducer, FIG. 2 is a front
view, and FIG. 3 is a sectional view Fig. 4 is a perspective view showing the mounting state of the
ultrasonic transducer on the vehicle. IA, IB: Vehicle, 2A, 2B: Ultrasonic transducer, 4A, 4B:
Ultrasonic transducer, 5A, 5B: Ultrasonic wave receiver, 7 иииииииииииииииииииииииииииииииииииииииииииииииииииии Antivibration member.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting
structure of an ultrasonic transducer in an inter-vehicle distance measuring apparatus i using
ultrasonic waves. As shown in tttGO2 / cat1) 1g: J, attach ultrasonic transducers (2AX2B) to the
front side of the leading car (IA) and the front side of the trailing car (IB), respectively, Devices
for measuring the distance between vehicles (IAXIB) are known. This is used when constant
distance control is performed to keep the distance between the following vehicle (IB) and the
preceding vehicle (IA) constant. The ultrasonic transducer (2AX2B) is composed of an ultrasonic
wave transmitter (4AX4B) and a wave receiver (5AX5B), respectively. The ultrasonic wave
transmitter (4B) of the following car (IB) is driven by the ultrasonic wave signal device (3B) + the
iron and the frequency (fl) (for example, 20KH2) (D ultrasonic wave to the preceding car (IA)
Transmit to the direction. When the ultrasonic wave receiver (5) of the preceding vehicle (IA)
receives this ultrasonic wave, it sends a stop wave signal to the ultrasonic wave receiving device
(3A). Then, the source-transmission / reception device (3A) immediately transmits the ultrasonic
wave 121603 of the frequency (f2X, for example, 25 KHs) by the transmitter (4A). Just as the
ultrasonic waves are received by the receiver (5B), ultrasonic waves of frequency (fl) are output
from the transmitter (article) immediately. As in ?1?1-B, transmission and reception of
ultrasonic waves is repeated constantly between two vehicles in tandem. This is called a singlearound system. The computing device (shown in the figure) mounted on the following vehicle (IB)
is based on the time taken to transmit the ultrasonic wave of the frequency (f2) after transmitting
03-05-2019
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the ultrasonic wave of the frequency (fl) Calculate the inter-vehicle distance of IA) (IB). Since the
ultrasonic transducer (2AM2B) is attached to the vehicle, if the vehicle is running on an engine,
the engine noise and exhaust noise, if it is an electric vehicle, motor noise, and the type of travel
route of the vehicle. Accordingly, external noise such as rail noise is received by the wave
receiver in front of the road surface, and due to the influence thereof, it is possible that accurate
inter-vehicle distance side 04 (3)) can not be achieved. In addition, when the ultrasonic
transducer (2AX 2B) is struck by lightning, lightning, splash or the like, noise is generated, which
also has an effect on the distance measurement. This device was designed for the purpose of
recording ?, and it was possible to measure the distance between vehicles accurately by
eliminating the adverse effects due to the above-mentioned * mai ? and natural conditions, and
the installation of the ultrasonic transducer with J5fJ The purpose is to provide an e- and
structure.
Hereinafter, the embodiment of the present invention will be described in detail with reference to
FIG. 2m to FIG. Figs. 2 and 3 show the ultrasonic transducer of the following vehicle (IB) и The
ultrasonic transmission / reception attached to the preceding vehicle CIA) is also the same #I
configuration. The transmitter (4B) '# including the ultrasonic transducer (6) and the receiver
(5B) are housed in the cover (7), and the upper surface, both sides + Covered by a cover (7). The
cover (7) is open only at the front. The earth wall of the cover (7) protrudes forward, and the
front end edges of both side walls slope downward to the rear. The transmitter (4B) and the
receiver (5B) are separated by a partition (7A). ??????????????????????
????????????? Thus, the outer wall of the cover (7) and the outer surface of * 11,
the inner and outer surfaces of both side walls and partitions (7), and the inner surface of the
bottom wall are provided with anti-vibration members (8). The anti-vibration member (8) is, for
example, a sponge, which is attached to various types of capani (7). The ultrasonic transducer
(2B) is covered by the cover (7) between the columns, and the cover (7) is provided with the antivibration member (8). Directly against the anti-vibration member (8), and since the generation of
sound is suppressed by the (15GO 6) anti-vibration member (8), there is almost no adverse effect
due to rain or the like. The ultrasonic transducer (2AX 2B) covered by such a cover (7) is fixedly
attached to the roof of the vehicle CIAMIB, as shown in FIG. The attachment device of the
ultrasonic transducer (2AX 2B) is not limited to the six roofs, and may be anywhere on the top of
the vehicle. Engine noise, road noise, etc. usually occur under or under the vehicle. Because the
ultrasonic transducers (2A) and (2B) are mounted on top of the vehicle (IA) (IB), the effects of
such extraneous noise are reduced. As described above, according to the present invention, the
cloud effect of the natural environment and the external noise to the ultrasonic transducer
attached to the vehicle is minimized (there is no risk of malfunction and hence an accurate
vehicle distance) Measurement becomes possible, + 61GO7)
03-05-2019
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