Handheld low voltage testing device
First Claim
Patent Images
1. A sub-microvolt electrical signal testing device, comprising:
- a portable hand-held enclosure;
a processor housed by said enclosure;
a memory operatively coupled to said processor, said memory storing one or more operating instructions;
a display device mounted to said enclosure, said display device being operatively connected to said processor;
a multi-channel input-output interface operatively coupled to said processor with a bi-directional communications channel, said multi-channel input-output interface configured with at least one input channel to receive external electrical signals and communicate said external electrical signals to said processor;
a plurality of electrical shock protection components coupled between said at least one input channel and said bi-directional communications channel;
a switching network coupled between each of said plurality of electrical shock protection components and said bi-directional communications channel, said switching network configured to selectively couple one of a plurality of electrodes to said bi-directional communications channel;
a differential operational amplifier coupled between said switching network and said bi-directional communications channel, said differential operational amplifier having an adjustable gain setting; and
wherein said processor is configured to utilize said one or more operating instructions to perform one or more tests on signals received from said multi-channel input-output interface, and to display results of said one or more tests on said display device.
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Abstract
A portable hand-held electrical testing device including a processor housed within an enclosure. The processor is configured to operate on commands by a user to process sub-microvolt electrical signals received through an input/output interface. The input/output interface includes a capacitive coupled amplifier with adjustable gain settings. Onboard memory linked to the processor stores processing data and instructions. A display device is mounted to said enclosure and is operatively connected to the processor to display processing results in real time.
46 Citations
22 Claims
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1. A sub-microvolt electrical signal testing device, comprising:
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a portable hand-held enclosure;
a processor housed by said enclosure;
a memory operatively coupled to said processor, said memory storing one or more operating instructions;
a display device mounted to said enclosure, said display device being operatively connected to said processor;
a multi-channel input-output interface operatively coupled to said processor with a bi-directional communications channel, said multi-channel input-output interface configured with at least one input channel to receive external electrical signals and communicate said external electrical signals to said processor;
a plurality of electrical shock protection components coupled between said at least one input channel and said bi-directional communications channel;
a switching network coupled between each of said plurality of electrical shock protection components and said bi-directional communications channel, said switching network configured to selectively couple one of a plurality of electrodes to said bi-directional communications channel;
a differential operational amplifier coupled between said switching network and said bi-directional communications channel, said differential operational amplifier having an adjustable gain setting; and
wherein said processor is configured to utilize said one or more operating instructions to perform one or more tests on signals received from said multi-channel input-output interface, and to display results of said one or more tests on said display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A sub-microvolt electrical signal testing device comprising:
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a portable hand-held enclosure;
a processor housed by said enclosure;
a memory operatively coupled to said processor, said memory storing one or more operating instructions;
a display device mounted to said enclosure, said display device being operatively connected to said processor;
a otoacoustic emission testing interface operatively coupled to said processor, said otoacoustic emission testing interface configured to receive external electrical signals and having at least one output channel, at least one transducer operatively connected to said at least one output channel via at least one electrical shock protection component to produce acoustic signals selected from the group comprising pure tones, chirps, clicks, and sine waveforms audible to a human ear, and at least one differential operational amplifier coupled between said at least one output channel and said at least one transducer; and
wherein said processor is configured to utilize said one or more operating instructions to perform one or more tests on signals received from said otoacoustic emission testing interface, and to display results of said one or more tests on said display device.
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17. A sub-microvolt electrical signal testing device comprising:
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a portable hand-held enclosure;
a processor housed by said enclosure;
a memory operatively coupled to said processor, said memory storing one or more operating instructions;
a display device mounted to said enclosure, said display device being operatively connected to said processor;
a otoacoustic emission testing interface operatively coupled to said processor, said otoacoustic emission interface configured with (a) at least one input channel and at least one output channel, (b) at least one transducer operatively connected to said at least one output channel, said transducer adapted to produce acoustic signals selected from the group comprising pure tones, chirps, clicks, and sine waveforms audible to a human ear, (c) at least one differential operational amplifier coupled between said at least one output channel and said at least one transducer, (d) at least one microphone operatively connected to said at least one input channel to receive signals from a human ear, (e) at least one electrical shock protection component coupled between said at least one input channel and said at least one microphone, (d) at least one dual-stage amplifier coupled between said at least one input channel and said at least one microphone, said dual-stage amplifier configured to provide linear amplification to said received signals; and
wherein said processor is configured to utilize said operating instructions to perform at least one test on signals received from said otoacoustic emission interface, and to display results of said test on said display device.
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18. A sub-microvolt electrical signal testing device comprising:
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a portable hand-held enclosure;
a processor housed by said enclosure;
a memory operatively coupled to said processor, said memory storing one or more operating instructions;
a display device mounted to said enclosure, said display device being operatively connected to said processor;
an auditory brain stem testing interface having (a) a plurality of electrodes, each of said electrodes adapted to receive external electrical signals;
(b) a bi-directional communications channel operatively connected to said plurality of electrodes;
(c) a plurality of electrical shock protection components coupled between each of said plurality of electrodes and said bi-directional communications channel;
(d) a switching network coupled between each of said plurality of electrical shock protection components and said bi-directional communications channel, said switching network configured to selectively couple one of said plurality of electrodes to said bi-directional communications channel; and
(e) a differential operational amplifier coupled between said switching network and said bi-directional communications channel, said differential operational amplifier having an adjustable gain setting; and
wherein said processor is configured to utilize said one or more operating instructions to perform one or more tests on signals received from said auditory brain stem testing interface, and to display results of said one or more tests on said display device. - View Dependent Claims (19, 20, 21, 22)
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Specification