Transmitter and monitoring system using the same
First Claim
1. A transmitter, comprising:
- a multi-to-one multiplexing switch configured to receive a plurality of sensor signals of a plurality of channels through a plurality of input terminals, select one sensor signal from the plurality of sensor signals, and output the selected sensor signal through a output terminal;
a first variable gain amplifier configured to receive the selected sensor signal, amplify the selected sensor signal with a gain within a first gain range, and output the amplified sensor signal;
a control parameter input terminal configured to receive an input control parameter from outside of the transmitter;
an operating and switching selector configured to perform operations according to the input control parameter, so as to control the multi-to-one multiplexing switch to select the one sensor signal and control the gain of the first variable gain amplifier;
a plurality of second variable gain amplifiers configured to be placed at a preceding stage of the multi-to-one multiplexing switch for respectively receiving the plurality of sensor signals, be controlled by the operating and switching selector to pre-amplify the plurality of sensor signals with gains within a second gain range, and output the plurality of pre-amplified sensor signals to the plurality of input terminals of the multi-to-one multiplexing switch; and
a plurality of analog switches configured to be placed at a preceding stage of the plurality of second variable gain amplifiers for respectively receiving the plurality of sensor signals, and be controlled by the operating and switching selector to transfer the plurality of sensor signals to the plurality of input terminals of the multi-to-one multiplexing switch, or to the plurality of second variable gain amplifiers.
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Accused Products
Abstract
The present disclosure discloses a transmitter and a monitoring system using this transmitter, the transmitter includes: a multi-to-one multiplexing switch configured to receive a plurality of sensor signals of a plurality of channels through a plurality of input terminals, select one sensor signal from the plurality of sensor signals, and output the selected sensor signal through a output terminal; a first variable gain amplifier configured to receive the selected sensor signal, amplify the selected sensor signal with a gain within a first gain range, and output the amplified sensor signal; a control parameter input terminal configured to receive an input control parameter from outside of the transmitter; and an operating and switching selector configured to perform operations according to the input control parameter, so as to control the multi-to-one multiplexing switch to select the one sensor signal and control the gain of the first variable gain amplifier.
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Citations
13 Claims
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1. A transmitter, comprising:
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a multi-to-one multiplexing switch configured to receive a plurality of sensor signals of a plurality of channels through a plurality of input terminals, select one sensor signal from the plurality of sensor signals, and output the selected sensor signal through a output terminal; a first variable gain amplifier configured to receive the selected sensor signal, amplify the selected sensor signal with a gain within a first gain range, and output the amplified sensor signal; a control parameter input terminal configured to receive an input control parameter from outside of the transmitter; an operating and switching selector configured to perform operations according to the input control parameter, so as to control the multi-to-one multiplexing switch to select the one sensor signal and control the gain of the first variable gain amplifier; a plurality of second variable gain amplifiers configured to be placed at a preceding stage of the multi-to-one multiplexing switch for respectively receiving the plurality of sensor signals, be controlled by the operating and switching selector to pre-amplify the plurality of sensor signals with gains within a second gain range, and output the plurality of pre-amplified sensor signals to the plurality of input terminals of the multi-to-one multiplexing switch; and a plurality of analog switches configured to be placed at a preceding stage of the plurality of second variable gain amplifiers for respectively receiving the plurality of sensor signals, and be controlled by the operating and switching selector to transfer the plurality of sensor signals to the plurality of input terminals of the multi-to-one multiplexing switch, or to the plurality of second variable gain amplifiers. - View Dependent Claims (2, 3, 4)
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5. A monitoring system, comprising:
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a plurality of sensors configured to generate a plurality of sensor signals of a plurality of channels; a transmitter configured to comprise; a multi-to-one multiplexing switch configured to receive the plurality of sensor signals of the plurality of channels through a plurality of input terminals, select one sensor signal from the plurality of sensor signals, and output the selected sensor signal through a output terminal; a first variable gain amplifier configured to receive the selected sensor signal, amplify the selected sensor signal with a gain within a first gain range, and output the amplified sensor signal; a control parameter input terminal configured to receive an input control parameter from outside of the transmitter; an operating and switching selector configured to perform operations according to the input control parameter, so as to control the multi-to-one multiplexing switch to select the one sensor signal and control the gain of the first variable gain amplifier; a plurality of second variable gain amplifiers configured to be placed at a preceding stage of the multi-to-one multiplexing switch for respectively receiving the plurality of sensor signals, be controlled by the operating and switching selector to pre-amplify the plurality of sensor signals with gains within a second gain range, and output the pre-amplified plurality of sensor signals to the plurality of input terminals of the multi-to-one multiplexing switch; and a plurality of analog switches configured to be placed at a preceding stage of the plurality of second variable gain amplifiers for respectively receiving the plurality of sensor signals, and be controlled by the operating and switching selector to transfer the plurality of sensor signals to the plurality of input terminals of the multi-to-one multiplexing switch, or to the plurality of second variable gain amplifiers; an analog/digital converter configured to receive the amplified sensor signals output from the transmitter, and convert the amplified sensor signals into digital sensor signals; an interface circuit configured to receive the digital sensor signals, and encode and capsulate the digital sensor signals into a digital output; and a central control unit configured to send the input control parameter to the transmitter, receive the digital output, and decapsulate and decode the digital output, so as to reproduce and display the plurality of sensor signals. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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Specification