Telemetry system with signal booster for digital data transmission through a transmission line
First Claim
1. A telemetry system, comprising:
- an electronic transmission line having a first end;
clock means, operatively connected to said electronic transmission line, for generating a sync signal for transmission on said electronic transmission line;
N receiving means for receiving digital data, where N is an integer greater than or equal to 2;
N booster subsystems coupled to said electronic transmission line between said clock means and the first end of said electronic transmission line, the first booster subsystem being coupled to said electronic transmission line at a position between said clock means and the Nth booster subsystem, the Kth booster subsystem being coupled to said electronic transmission line at a position between said clock means and the (K+1)th booster subsystem (where K is an integer and 1≦
K<
N), the Kth booster subsystem being operatively connected to the Kth receiving means, said Kth booster subsystem including means for injecting the digital data onto said electronic transmission line, as a digital data signal, in the direction of the first end of said electronic transmission line in dependence upon said sync signal, said Kth booster subsystem further including means for injecting a booster signal onto said electronic transmission line to enhance the amplitude and rise time of the digital data signals injected onto said electronic transmission line by each of said N booster subsystems which is coupled to said electronic transmission line at a position between said clock means and said Kth booster subsystem, said Kth booster subsystem including;
a booster circuit, coupled to said electronic transmission line, for receiving the sync signal and the digital data signals injected onto said electronic transmission line by each of said N booster subsystems which is coupled to said electronic transmission line at a position between said clock means and said Kth booster subsystem, for generating a received data signal, and for injecting the booster signal onto said electronic transmission line to combine with each of the digital data signals travelling on said electronic transmission line, in order to enhance the amplitude and rise time of each of the digital data signals, said booster circuit including;
a first coupling network, coupled to said electronic transmission line, for sensing the current on said electronic transmission line and for generating a first sensing signal; and
a second coupling network, coupled to said electronic transmission line, for sensing the voltage on said electronic transmission line and for generating a second sensing signal;
switching means, operatively connected to said first and second coupling networks, for alternately switching between first and second states, so that said booster circuit injects the booster signal onto said electronic transmission line, wherein the booster signal includes a voltage signal injected onto said electronic transmission line through said first coupling network and a current signal injected onto said electronic transmission line through said second coupling network; and
booster controller means, operatively connected to said booster circuit, said Kth receiving means, and said electronic transmission line, for receiving the digital data from said Kth receiving means and the received data signal from said booster circuit, and for generating a transmit data signal to be injected onto said electronic transmission line, by said digital data injecting means of said Kth booster subsystem, as the digital data signal.
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Accused Products
Abstract
A telemetry system for sensing remote physical events and for transmitting and boosting a digital data signal representing the sensed events on a transmission line, which comprises a master clock and a plurality of sensing stations for sensing local data. The sensing stations inject local data onto the transmission line as a digital data signal, and a controller/receiver receives the digital data. The master clock initializes the system timing and generates a sync signal. Each sensing station includes a booster subsystem for receiving the local digital data and for injecting the digital data onto the transmission line as a digital data signal. During system start up, each booster subsystem claims a slot, in accordance with an organizational process, for injecting the digital data signal onto the transmission line. The booster subsystem in each sensing station further includes a booster circuit for boosting the digital data signals which are propagating on the transmission line, as well as the sync signal. The booster circuit comprises a negative impedance bistable device for enhancing the amplitude and rise time of the digital data signal. Each booster subsystem further includes a switching mode regulator circuit for converting a supply current on the transmission line to a level voltage, thereby providing local power to the components of the sensing station.
32 Citations
19 Claims
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1. A telemetry system, comprising:
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an electronic transmission line having a first end; clock means, operatively connected to said electronic transmission line, for generating a sync signal for transmission on said electronic transmission line; N receiving means for receiving digital data, where N is an integer greater than or equal to 2; N booster subsystems coupled to said electronic transmission line between said clock means and the first end of said electronic transmission line, the first booster subsystem being coupled to said electronic transmission line at a position between said clock means and the Nth booster subsystem, the Kth booster subsystem being coupled to said electronic transmission line at a position between said clock means and the (K+1)th booster subsystem (where K is an integer and 1≦
K<
N), the Kth booster subsystem being operatively connected to the Kth receiving means, said Kth booster subsystem including means for injecting the digital data onto said electronic transmission line, as a digital data signal, in the direction of the first end of said electronic transmission line in dependence upon said sync signal, said Kth booster subsystem further including means for injecting a booster signal onto said electronic transmission line to enhance the amplitude and rise time of the digital data signals injected onto said electronic transmission line by each of said N booster subsystems which is coupled to said electronic transmission line at a position between said clock means and said Kth booster subsystem, said Kth booster subsystem including;a booster circuit, coupled to said electronic transmission line, for receiving the sync signal and the digital data signals injected onto said electronic transmission line by each of said N booster subsystems which is coupled to said electronic transmission line at a position between said clock means and said Kth booster subsystem, for generating a received data signal, and for injecting the booster signal onto said electronic transmission line to combine with each of the digital data signals travelling on said electronic transmission line, in order to enhance the amplitude and rise time of each of the digital data signals, said booster circuit including; a first coupling network, coupled to said electronic transmission line, for sensing the current on said electronic transmission line and for generating a first sensing signal; and a second coupling network, coupled to said electronic transmission line, for sensing the voltage on said electronic transmission line and for generating a second sensing signal; switching means, operatively connected to said first and second coupling networks, for alternately switching between first and second states, so that said booster circuit injects the booster signal onto said electronic transmission line, wherein the booster signal includes a voltage signal injected onto said electronic transmission line through said first coupling network and a current signal injected onto said electronic transmission line through said second coupling network; and booster controller means, operatively connected to said booster circuit, said Kth receiving means, and said electronic transmission line, for receiving the digital data from said Kth receiving means and the received data signal from said booster circuit, and for generating a transmit data signal to be injected onto said electronic transmission line, by said digital data injecting means of said Kth booster subsystem, as the digital data signal. - View Dependent Claims (3, 6, 7, 8, 9)
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2. A telemetry system, comprising:
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an electronic transmission line having a first end; clock means, operatively connected to said electronic transmission line, for generating a sync signal for transmission on said electronic transmission line; N receiving means for receiving digital data, where N is an integer greater than or equal to 2; N booster subsystems coupled to said electronic transmission line between said clock means and the first end of said electronic transmission line, the first booster subsystem being coupled to said electronic transmission line at a position between said clock means and the Nth booster subsystem, the Kth booster subsystem being coupled to said electronic transmission line at a position between said clock means and the (K+1)th booster subsystem (where K is an integer and 1≦
K<
N), the Kth booster subsystem being operatively connected to the Kth receiving means, said Kth booster subsystem including means for injecting the digital data onto said electronic transmission line, as a digital data signal, in the direction of the first end of said electronic transmission line in dependence upon said sync signal, said Kth booster subsystem further including means for injecting a booster signal onto said electronic transmission line to enhance the amplitude and rise time of the digital data signals injected onto said electronic transmission line by each of said N booster subsystems which is coupled to said electronic transmission line at a position between said clock means and said Kth booster subsystem, said Kth booster subsystem including;a booster circuit, coupled to said electronic transmission line, for receiving the sync signal and the digital data signals injected onto said electronic transmission line by each of said N booster subsystems which is coupled to said electronic transmission line at a position between said clock means and said Kth booster subsystem, for generating a received data signal, and for injecting the booster signal onto said electronic transmission line to combine with each of the digital data signals travelling on said electronic transmission line, in order to enhance the amplitude and rise time of each of the digital data signals, said booster circuit including; a first coupling network, coupled to said electronic transmission line, for sensing the current on said transmission line and for generating a first sensing signal; a second coupling network, coupled to said electronic transmission line, for sensing the voltage on said electronic transmission line and for generating a second sensing signal; first switching means, operatively connected to said first and second coupling networks, for alternately switching between first and second states, wherein, when said first switching means switches, a voltage signal is injected onto said electronic transmission line through said first coupling network; and second switching means, operatively connected to said first switching means and to said second coupling network, for alternately switching between first and second states in dependence upon the switching of said first switching means, wherein, when said second switching means switches, a current signal is injected onto said electronic transmission line through said second coupling network, wherein said booster signal comprises said voltage signal and said current signal, and wherein said first switching means switches in dependence upon said first and second sensing signals and the state of said second switching means; and booster controller means, operatively connected to said booster circuit, said Kth receiving means, and said electronic transmission line, for receiving the digital data from said Kth receiving means and the received data signal from said booster circuit, and for generating a transmit data signal to be injected onto said electronic transmission line, by said digital data injecting means of said Kth booster subsystem, as the digital data signal. - View Dependent Claims (4, 5)
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10. A telemetry system, comprising:
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an electronic transmission line having a first end; clock means, operatively connected to said electronic transmission line, for generating a sync signal for transmission on said electronic transmission line; first receiving means for receiving first local digital data; second receiving means for receiving second local digital data; a first booster subsystem coupled to said electronic transmission line at a position between said clock means and the first end of said electronic transmission line, and operatively connected to said first receiving means, said first booster subsystem including means for injecting the first local digital data, as a first digital data signal, onto said electronic transmission line in a first direction toward the first end of said electronic transmission line, the first digital data signal being injected onto said electronic transmission line in dependence upon said sync signal, said first booster subsystem further including means for injecting a first booster signal onto said electronic transmission line to enhance the amplitude and rise time of the sync signal, said first booster signal injecting means of said first booster subsystem comprising; a first booster circuit, coupled to said electronic transmission line, for receiving the sync signal, for generating a received data signal and for injecting the first booster signal onto said electronic transmission line to combine with the sync signal travelling on said electronic transmission line, in order to enhance the amplitude and rise time of the sync signal; first booster controller means, operatively connected to said first booster circuit, said first receiving means and said electronic transmission line, for receiving the first local digital data from said first receiving means and the received data signal from said first booster circuit, and for generating a transmit data signal which is injected onto said electronic transmission line, by said first local digital data injecting means of said first booster subsystem, as the first digital data signal; a second booster subsystem coupled to said electronic transmission line at a position between said first booster subsystem and the first end of said electronic transmission line, and operatively connected to said second receiving means, said second booster subsystem including means for injecting the second local digital data, as a second digital data signal, onto said electronic transmission line in the first direction, the second digital data signal being injected in dependence upon said sync signal, said second booster subsystem including means for injecting a second booster signal onto said electronic transmission line to enhance the amplitude and rise time of the first digital data signal and the sync signal, said second booster signal injecting means of said second booster subsystem comprising; a second booster circuit, coupled to said electronic transmission line, for receiving the sync signal and the first digital data signal, for generating a received data signal and for injecting the second booster signal onto said electronic transmission line to combine with the sync signal and the first digital data signal travelling on said electronic transmission line, in order to enhance the amplitude and rise time of the sync signal and the first digital data signal; and second booster controller means, operatively connected to said second booster circuit, said second receiving means, and said electronic transmission line, for receiving the second local digital data from said second receiving means and the received data signal from said second booster circuit and for generating a transmit data signal which is injected onto said electronic transmission line by said second local digital data injecting means of said second booster subsystem as the second digital data signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification