Programmable remote transducer with filtering, differentiation, integration, and amplification
First Claim
1. Programmable preprocessor apparatus disposable adjacent a remotely-located mechanical event to electrical signal analog sensor device for communicating processed analog output signals therefrom and for processing digital control signals thereto, said apparatus comprising:
- first sensor signal preamplifier electronic circuit means for coupling the output signal of an analog charge generating embodiment of said mechanical event to electrical signal analog sensor device into said preprocessor apparatus;
second sensor signal preamplifier electronic circuit means including a variable resistance sensor energizing source of electrical potential, for coupling the output signal of a variable resistance embodiment of said mechanical event to electrical signal analog sensor device into said preprocessor apparatus;
electrical wave filter electronic circuit means of first predetermined high-pass network S plane pole count and selectable lower corner frequency and of second predetermined low-pass network S plane pole count and selectable upper corner frequency, for limiting the low frequency and high frequency signal components respectively in said processed analog output signals;
first and second analog integrator electronic circuit means for generating mathematical first integral and second integral signals of said sensor electrical signal as components in said processed output signals;
signal amplifier electronic circuit means of predetermined selectable increments of amplifier gain for adjusting the voltage output of said sensor device into a convenient volts per engineering unit range;
first digital means for storing coded command signals determinative of the inclusion and exclusion of individual ones of said six electronic circuit means, and predetermined circuit components relating thereto, in said processed output signals;
second digital memory means for storing a selectively accessible test signal generating code;
third digital memory means for storing a selectively accessible coded sequence of numbers identifying said sensor with respect to additional of said sensors in a plural sensor array and for storing a selectively accessible decoded sequence of numbers representative of processed output signals of said preprocessor apparatus;
buffer driver circuit means for coupling digital signals from said first, second, and third digital memory means and analog signals from said signal amplifying means onto a two conductor communications line and for sensing the presence of command signals received via said communications line at said preprocessor apparatus; and
power supply means for energizing electronic components of said preprocessor apparatus with electrical energy received at said mechanical event remote location via said two conductor communications line.
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Accused Products
Abstract
A mechanical-to-electrical transducer arrangement wherein a combination of signal preamplifier and programmable analog signal processing circuitry is disposed immediately adjacent the transducer'"'"'s sensor cell where low losses a low noise coupling into the signal path can be achieved. The programmable analog processing includes differentiation, filtering, integration, amplification and elective disconnection of the sensor cell to enable rapid transient signal recovery. Provisions for generation of transducer identification code and test signals in the processing circuitry and communications by way of a two wire time shared communication path is included.
39 Citations
16 Claims
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1. Programmable preprocessor apparatus disposable adjacent a remotely-located mechanical event to electrical signal analog sensor device for communicating processed analog output signals therefrom and for processing digital control signals thereto, said apparatus comprising:
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first sensor signal preamplifier electronic circuit means for coupling the output signal of an analog charge generating embodiment of said mechanical event to electrical signal analog sensor device into said preprocessor apparatus; second sensor signal preamplifier electronic circuit means including a variable resistance sensor energizing source of electrical potential, for coupling the output signal of a variable resistance embodiment of said mechanical event to electrical signal analog sensor device into said preprocessor apparatus; electrical wave filter electronic circuit means of first predetermined high-pass network S plane pole count and selectable lower corner frequency and of second predetermined low-pass network S plane pole count and selectable upper corner frequency, for limiting the low frequency and high frequency signal components respectively in said processed analog output signals; first and second analog integrator electronic circuit means for generating mathematical first integral and second integral signals of said sensor electrical signal as components in said processed output signals; signal amplifier electronic circuit means of predetermined selectable increments of amplifier gain for adjusting the voltage output of said sensor device into a convenient volts per engineering unit range; first digital means for storing coded command signals determinative of the inclusion and exclusion of individual ones of said six electronic circuit means, and predetermined circuit components relating thereto, in said processed output signals; second digital memory means for storing a selectively accessible test signal generating code; third digital memory means for storing a selectively accessible coded sequence of numbers identifying said sensor with respect to additional of said sensors in a plural sensor array and for storing a selectively accessible decoded sequence of numbers representative of processed output signals of said preprocessor apparatus; buffer driver circuit means for coupling digital signals from said first, second, and third digital memory means and analog signals from said signal amplifying means onto a two conductor communications line and for sensing the presence of command signals received via said communications line at said preprocessor apparatus; and power supply means for energizing electronic components of said preprocessor apparatus with electrical energy received at said mechanical event remote location via said two conductor communications line. - View Dependent Claims (2, 3, 4, 5)
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6. A measuring system comprising the combination of:
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an analog electrical signal responsive recording apparatus; an analog electrical signal generating mechanical displacement to electrical signal transducer cell member remotely disposed of said recording apparatus; and analog signal conditioning means located adjacent said mechanical displacement to electrical signal transducer cell member and electively connected with output terminals thereof for selectably adding transducer signal waveform improving bandpass filtering, waveform differentiation, waveform integration, amplification, digital testing code, and transducer cell digital identification code to said transducer cell member electrical output signal. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification