Calibration system
First Claim
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1. A test system for use with a physical disturbance monitoring system having one or more sensors for sensing a physical disturbance, comprising:
- transducer means responsive to electrical stimulation signals for producing physical vibrations simulating vibrations caused by a physical disturbance, said transducer means being positioned proximate to a physical disturbance sensor; and
test signal stimulation means for providing an electrical stimulation signal to the transducer means so as to cause the transducer means to produce physical vibrations proximate to the sensor, wherein the electrical stimulation signal is derived from the output of a physical disturbance sensor.
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Abstract
A calibration system includes a transducer 36 positioned proximate to a physical disturbance monitoring system sensor 20. A test signal generator 34 causes the transducer 36 to produce an acoustic signal simulating a physical disturbance proximate to the sensor 20. The output of the sensor 20 responsive to the acoustics simulation signal may be compared to a predetermined reference signal to verify the calibration of the sensor 20.
29 Citations
12 Claims
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1. A test system for use with a physical disturbance monitoring system having one or more sensors for sensing a physical disturbance, comprising:
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transducer means responsive to electrical stimulation signals for producing physical vibrations simulating vibrations caused by a physical disturbance, said transducer means being positioned proximate to a physical disturbance sensor; and test signal stimulation means for providing an electrical stimulation signal to the transducer means so as to cause the transducer means to produce physical vibrations proximate to the sensor, wherein the electrical stimulation signal is derived from the output of a physical disturbance sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A test system for use with a malfunction monitoring system having one or more sensors for sensing malfunctioning equipment, comprising:
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a mechanical device having moving parts for simulating when activated, an equipment malfunction in the vicinity of a malfunction sensor so as to cause the malfunction sensor to produce a mechanical malfunction reference sensor output signal; recording means for recording the output of the malfunction sensor when the mechanical device is activated; and transducer means responsive to electrical stimulation signals for producing acoustic noise simulating acoustic noise caused by an equipment malfunction, said transducer means being positioned proximate to a malfunction sensor; test signal stimulation means for providing an electrical stimulation signal derived from the recorded output of the malfunction sensor when disturbed by the mechanical device, and for applying the electrical stimulation signal to the transducer means to cause the sensor in the vicinity of the transducer means to produce an acoustic test sensor output signal; and means for comparing the acoustic test sensor output signal to the mechanical reference sensor output signal and for computing a correlation factor between the two sensor output signals; wherein application of the electrical stimulation signal again to the transducer means by the test signal stimulation means causes the sensor proximate to the transducer means to produce a second acoustic test sensor output signal; and wherein the comparing means further has means for correlating the second acoustic test sensor output signal to the mechanical reference sensor output signal using the computed correlation factor and for comparing the correlated second acoustic test sensor output signal and mechanical reference sensor output signal to test the sensor.
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Specification