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公开(公告)号：US3691368A
公开(公告)日：1972-09-12
申请号：US3691368D
申请日：1970-12-03
发明人： HOYLER ROBERT C
CPC分类号： B61L13/002
摘要： A vehicle to be detected is moved along a track divided into a plurality of sections, with a boundary between each adjacent pairs of sections. A radiant energy transmitter is situated at one side of the track at each such boundary, and a radiant energy receiver is situated on the other side of the track for receiving the transmitted radiant energy. The passing of a train through a boundary blocks the transmission of the radiant energy from the transmitter to the latter receiver. A radio (high frequency) signal receiving means is situated at each boundary adjacent the radiant energy receiver, for receiving a radio signal from a train carried antenna each time a train passes the boundary. In response to the sensing of radiant energy at a given boundary, concurrent with the reception of a radio signal from a given train passing the succeeding boundary, a signal is generated for controlling the speed of another train in at least the section preceding the given boundary.
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公开(公告)号：US3588709A
公开(公告)日：1971-06-28
申请号：US3588709D
申请日：1968-09-26
发明人： HOYLER ROBERT C
CPC分类号： H04J3/0602 , B60L2200/26
摘要： THE INVENTION ENCOMPASSES A SYNCHRONOUS TIMING SYSTEM OF THE TYPE WHEREIN A COUNTER IS "SLAVED" TO A SYNCHRONIZATION STATION BY COUNT PULSES AND RESET SIGNALS. BY PROVIDING A SYNCHRONIZATION SIGNAL HAVING ONE LESS PULSE THAN THE CAPACITY OF THE COUNTER, AND USING THE ABSENCE OF THE PULSE TO PROVIDE THE SYNCHRONIZATION INTELLIGENCE, THE SYSTEM HAS A BUILT-IN FEATURE ALLOWING DETECTION OF SYNCHRONIZATION FAILURE.
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3.发明授权
公开(公告)号：US3593022A
公开(公告)日：1971-07-13
申请号：US3593022D
申请日：1968-09-25
CPC分类号： B61L3/221 , B61L27/0038
摘要： A train control signalling system is provided for train speed command signals and train position detection signals, which system is operative in a fail-safe manner with a plurality of isolated track circuit blocks. For a given train system, a plurality of wayside stations is provided, with each station being operative through a limited number of conductors to energize a predetermined number of track circuit blocks. Each station includes a crystal controlled signal generator to assure an accurate coherent base frequency control of the communicated signals and provide control signals for the signal communication operation relative to each station to thereby control, in effect as an extension of the crystal control concept, accuracy to each of the associated track circuit blocks. Up to 32 separated track circuit block locations receive information from each wayside station, for this particular system as described, over a common time division multiplexed signalling system, so it is necessary that each location receive its particular information only at the correct time period. This is accomplished by an appropriate control signal sent for this purpose to each track circuit block location.
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公开(公告)号：US3586982A
公开(公告)日：1971-06-22
申请号：US3586982D
申请日：1969-02-19
发明人： HOYLER ROBERT C
CPC分类号： H03K23/66 , B60L2200/26
摘要： A flip-flop digital counter is reset periodically by a reset pulse, and upcounted by count pulses. A network is connected to the individual flip-flop outputs to sense presence of a predetermined count condition in the counter together with dynamic behavior of the individual flip-flops. Another network is connected to the individual flip-flops and to the input connection to the reset line to detect simultaneous resetting to zero condition of each flip-flop with appearance of a reset pulse. The output of these two networks is passed to another network with checks for presence of both the count condition and such reset in each count cycle.
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公开(公告)号：US3582894A
公开(公告)日：1971-06-01
申请号：US3582894D
申请日：1968-05-20
发明人： HOYLER ROBERT C
CPC分类号： B61L25/04
摘要： Coded signal transmission equipment is disclosed wherein a preselected train destination signal comprising a six-bit code signal coded to correspond to anyone out of 0 to 49 and/or a preselected train length signal comprising a six-bit code signal coded to correspond to anyone out of 50 to 59 are sent between a train vehicle and a selected wayside location. These numbers are the result of the particular coding technique employed. In general it is desired to send two coded signals and to separate those signals within the signal receiving equipment in a fail safe manner. For this purpose there is provided a wayside located signal receiving equipment which includes a signal register in which both the destination signal and the length signal are serially stored and shifted by a suitable shift control signal. A predetermined logic circuit arrangement is operative with a selected portion of the shift register to sense when a predetermined one of said signals is stored in said portion of the register to indicate that the register at that time is fully loaded and properly oriented. The desired coded signals can then be read out and utilized to indicate the train destination and/or the train length as may be desired. A similar technique is employed to transmit coded vehicle performance signals back to the train vehicle.
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