System and method for performing a test on a pitot probe heating element
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01P-021/02
G01F-001/46
출원번호
US-0132700
(2016-04-19)
등록번호
US-9939459
(2018-04-10)
발명자
/ 주소
Dichek, Daniel J.
출원인 / 주소
The Boeing Company
대리인 / 주소
Thompson Hine LLP
인용정보
피인용 횟수 :
0인용 특허 :
9
초록▼
A system for testing a pitot probe heating element includes first and second probes, measuring signals selected from a first signal representing a differential electric current between supply and return wires of the heating element, a second signal representing a residual voltage with respect to gro
A system for testing a pitot probe heating element includes first and second probes, measuring signals selected from a first signal representing a differential electric current between supply and return wires of the heating element, a second signal representing a residual voltage with respect to ground in the heating element, and a third signal representing ambient electric fields with respect to ground in the heating element; a signal acquisition component that selectively and sequentially applies a test voltage to the heating element to generate the selected signals and receives the selected signals measured by the first and second probes; a signal processing component that receives the selected ones of the first, second, and third signals, processes them, and extracts measurements from the data to generate results indicative of a condition of the heating element; a device control component that generates a display; and a display component.
대표청구항▼
1. A system for performing a test on a pitot probe heating element, the system comprising: a first probe and a second probe, the first probe and the second probe each measuring different diagnostic electrical signals;a signal acquisition component that selectively and sequentially applies a test vol
1. A system for performing a test on a pitot probe heating element, the system comprising: a first probe and a second probe, the first probe and the second probe each measuring different diagnostic electrical signals;a signal acquisition component that selectively and sequentially applies a test voltage to the heating element to generate the different diagnostic electrical signals, and receives the different diagnostic electrical signals measured by the first probe and the second probe;a signal processing component that receives the different diagnostic electrical signals from the signal acquisition component, processes the different diagnostic electrical signals, and extracts measurements from the data in the different diagnostic electrical signals to generate results indicative of a condition of the heating element;a device control component that receives the results from the signal processing component and generates a display signal indicative of the results; anda user interface component that communicates the results to a user. 2. The system of claim 1, wherein the different diagnostic electric signal are selected from a first signal representing a differential electric current between supply and return wires of the heating element, a second signal representing a residual voltage with respect to ground in the heating element, and a third signal representing ambient electric fields with respect to ground in the heating element. 3. The system of claim 2, wherein the first probe is selected from a pair of current-sensing clamps adapted to contact the supply cable and the return cable, respectively, of the heating element, and first and second current-sensing probes adapted to be placed around the supply cable and the return cable, respectively, to measure voltage without contacting the heating element. 4. The system of claim 1, wherein the signal acquisition component includes a test voltage generator, an input/output switch, and an acquisition control and logic module; the acquisition control and logic module actuates the input/output switch and test voltage generator to generate a test voltage through the input/output switch to the first probe to generate the test voltage; and actuates the input/output switch to selectively receive the selected ones of the second signal and the third signal. 5. The system of claim 1, wherein the signal acquisition component includes an input protection and filtering element; the input protection and filtering element including protective circuitry to protect the signal acquisition component from overcurrent and overvoltage conditions, and includes a filter to filter signals that may cause erroneous measurements by the signal acquisition component. 6. The system of claim 5, wherein the signal acquisition component includes a signal scaling element that receives signals from the input protection and filtering element and produces scaled signals in a range that can be processed by the signal acquisition component. 7. The system of claim 6, wherein the signal acquisition component includes a signal sampling and digitization element that receives scaled signals from the signal scaling component, samples and digitizes the scaled signals, and transmits digitized signals to the acquisition control and logic module. 8. The system of claim 7, wherein the acquisition control and logic module controls the signal sampling and digitization element. 9. The system of claim 6, further comprising a memory component, and wherein the device control component records the results in the memory component. 10. The system of claim 9, wherein the memory is selected from a function of the signal processing component, a secure digital (SD) card, and a flash memory chip. 11. The system of claim 1, wherein the display component is selected from a screen, a set of LED indicator lights, and an application window on a portable device, the portable device selected from a laptop computer, a computer tablet, and a smartphone. 12. The system of claim 1, further comprising a communication component, the communication component modifying the functionality of the signal processing component and the signal acquisition component. 13. The system of claim 12, wherein the system includes a heater health test device containing the first probe, the second probe, and the signal acquisition component; and a second, remote device including the communication component, the device control component, and the display component. 14. The system of claim 13, wherein the remote device is selected from a laptop computer, a tablet computer, a smartphone, and a desktop computer. 15. The system of claim 13 wherein the communication component includes a serial data interface to the signal acquisition component. 16. The system of claim 1, further comprising a power supply for supplying electrical power to the signal acquisition component, the signal processing component, and the device logic component. 17. The system of claim 16, wherein the power supply includes a rechargeable battery, an external power adapter connected to receive external power for direct use by the system and for recharging the rechargeable battery, a battery charging electronics component connected to monitor charging of the battery, and a power and battery monitor for detecting a presence of a connected source of external power, detecting an amount of charge left on the battery, and determining whether power available to the system is sufficient to perform the test on the pitot tube heating element. 18. A system for performing a test on a pitot probe heating element, the system comprising: a sensing block including a first probe and a second probe, the first probe and the second probe each measuring a different signal selected from a first signal representing a differential electric current between a supply wire and a return wire in the heating element, a second signal representing a residual voltage with respect to ground in the heating element, and a third signal representing ambient electric fields with respect to ground in the heating element; anda signal acquisition component that selectively and sequentially applies a test voltage to the heating element to generate the selected ones of the first signal and the second signal, and receives selected ones of the first signal, the second signal, and the third signal measured by the first probe and the second probe;a computing block including a signal processing component that receives the selected ones of the first signal, the second signal, and the third signal from the signal acquisition component, processes the selected ones of the first signal, the second signal, and the third signal, and extracts measurements from the data in the selected ones of the first signal, the second signal, and the third signal to generate results indicative of a condition of the heating element;a device logic component having a device control component that receives the results from the signal processing component and generates a display signal indicative of the results; anda user interface component having a display component that receives the display signal from the device control component and displays the results; anda power supply block that supplies electrical power to the sensing block and to the computing block. 19. A method for performing a test on a pitot probe heating element, the method comprising: measuring signals selected from a first signal representing a differential electric current between a supply wire and a return wire of the heating element, a second signal representing a residual voltage with respect to ground in the heating element, and a third signal representing ambient electric fields with respect to ground in the heating element;selectively and sequentially applying a test voltage to the heating element to generate the selected ones of the first signal and the second signal, and receiving the selected ones of the first signal, the second signal, and the third signal;processing the selected ones of the first signal, the second signal, and the third signal, extracting measurements from the data in the selected ones of the first signal, the second signal, and the third signal, and generating results indicative of a condition of the heating element by the signal processing component; andcommunicating the results. 20. The method of claim 19, wherein the processing step includes combining data from two or more tests to provide a conclusion of higher reliability.
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