Asset-condition monitoring system
An ultrasound sensing system for monitoring the condition or integrity of a structure, comprising (a) a plurality of ultrasound sensors, each sensor being configured to receive at least one first electrical signal, transmit an ultrasound signal in response to the first electrical signal, receive at least one reflected ultrasound signal, and transmit a second electrical signal in response to the reflected ultrasound signal, the first and second electrical signals being analog; (b) at least one digital sensor interface (DSI) to which at least a portion of the sensors are connectable, the DSI being configured to transmit the first electrical signal and receive the second electrical signal, and to generate an A-scan signal based on the first and second electrical signals for each sensor, the DSI having circuitry for transmitting a digital signal based directly or indirectly on at least the A-scan signal, the digital signal including an address corresponding to the at least one DSI; (c) a digital bus configured to receive the digital signal from the at least one DSI; (d) a user interface connected to the bus to receive the digital signal; and wherein, in one embodiment, the sensors are mounted semi-permanently on the structure and the DSI is also mounted semi-permanently on or adjacent to the structure being monitored.
1. An ultrasound sensing system for monitoring the condition or integrity of a structure, comprising:
at least one ultrasound sensor being mounted permanently or semi-permanently to said structure, said sensor being mounted directly on said structure, said sensor being configured to transmit at least one ultrasonic signal directly into said structure in response to at least one first analog signal from a digital sensor interface (DSI), said sensor being configured to transmit a second analog signal to said DSI in response to a reflected ultrasonic signal based on said at least one ultrasonic signal; and
at least one DSI physically connected to said at least one sensor, said DSI being configured to transmit periodically said first analog signal and receive said second analog signal, and to generate an A-scan signal based on said first and second analog signals, said DSI being configured to calculate thickness data based on said A-scan signal and store said thickness data, said DSI having circuitry for transmitting periodically a digital signal comprising at least said thickness data and location data.
2. The System of claim 1 , wherein said location data is an address corresponding to said at least one DSI.
3. The System of claim 1 , wherein said sensor is cabled to said DSI.
4. The System of claim 1 , wherein said sensor is integrated physically with said DSI.
5. The System of claim 1 , wherein at least some of said sensors are dual element sensors.
6. The System of claim 1 , wherein said at least one DSI is configured to periodically transmit said DSI signal, generate an A-scan signal, and store said thickness data, and to transmit said digital signal at a subsequent, predetermined time.
7. The System of claim 1 , wherein said at least one DSI is configured to transmit said DSI signal in response to a polling request signal from a controller connected digitally to said DSI.
8. The System of claim 1 , wherein said DSI contains circuitry and software to interface to temperature monitoring devices, where at least one temperature monitoring device is mounted on the object under test.
9. The System of claim 1 , wherein said digital signal is transmitted on a digital bus, wherein said digital bus is a multi-drop bus.
10. The System of claim 9 , wherein at least one DSI comprises multiple DSIs each connected to said digital bus.
11. The System of claim 1 , further comprising a permanently-installed wireless controller for transmitting a wireless signal based on said digital signal.
12. The System of claim 11 , wherein said wireless controller is solar powered.
13. The System of claim 1 , wherein at least one sensor comprises a multi-element sensor and said DSI is configured to execute full matrix capture on data obtained from said multi-element sensor.
14. The System of claim 13 , further comprising a computational device, discrete from said DSI, configured to use a total focusing method on said data of said full matrix capture to generate an ultrasonic image.
15. The System of claim 14 wherein said computational device is configured to use a total focusing method on said data of said full matrix capture to determine the thickness of an asset.
16. The System of claim 1 , further comprising:
a digital bus configured to receive said digital signal from said at least one DSI; and
a user interface connected to said bus to receive said digital signal.
17. The System of claim 1 , wherein said DSI is configured to transmit said digital signal wirelessly.
18. The System of claim 1 , wherein said one or more sensors comprises a plurality of sensors and wherein said plurality of sensors is connected to a single DSI.
19. The system of claim 1 , wherein said DSI comprises a microcontroller and memory configured to transmit periodically said DSI signal and receive said sensor signal, to generate said A-scan, to calculate said thickness data, to store said thickness data, and to cause said digital signal to be transmitted at said subsequent, predetermined time.
20. The system of claim 1 , further comprising a battery for powering said DSI.