# US 2014/0152426 A1 · Method for monitoring a health status of a bearing with a warning device having a close range wireless interface

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- Number: US 2014/0152426 A1
- Document ID: US20140152426A1
- Status: Published application
- Kind: A1
- Application number: 14/041,964
- Filed: 2013-09-30
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Aktiebolaget Skf
- Applicants: Aktiebolaget SKF
- Inventors: Jon D. Murphy
- Web page: https://patentgrep.com/patent/US20140152426A1

## CPC

- F16C 19/52: with devices affected by abnormal or undesired conditions
- F16C 19/525: {related to temperature and heat, e.g. insulation}
- F16C 19/527: {related to vibration and noise}
- G01M 13/04: Bearings
- F16C 41/008: {Identification means, e.g. markings, RFID-tags; Data transfer means}
- F16C 2300/02: General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
- G06K 19/0716: {at least one of the integrated circuit chips comprising a sensor or an interface to a sensor}
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS

## Abstract

A method of reading sensor values from or writing programming alarm and monitoring algorithm parameters into a warning device for monitoring a bearing having a close range wireless interface is disclosed. The method of reading or writing includes providing an RFID tag having an integrated circuit with memory, a radio for modulating and demodulating a radio-frequency signal, an antenna for receiving and transmitting the radio-frequency signal, and a digital bus mounted to a PCB, the digital bus connecting a microcontroller to the RFID tag. The steps of downloading the parameters into memory, accessing the parameters with the microcontroller and adapting the parameters according to the stored parameters are carried out during a write operation. The steps of uploading the stored sensor value from memory to the radio, and transmitting the sensor value with the radio via the antenna are carried out during the reading operation.

## Claims

### Claim 1

A method of programming alarm and monitoring algorithm parameters into a warning device for monitoring a health status of a bearing having a close range wireless interface, the method comprising the steps of:
providing an RFID tag having an integrated circuit with memory for storing and processing information, and a radio for modulating and demodulating a radio-frequency signal,
providing an antenna for receiving and transmitting the modulated and demodulated radio-frequency signal, and connecting to the RFID tag,
providing a digital bus connecting a microcontroller to the RFID tag,
downloading the parameters through the antenna and storing them into the RFID tag's memory,
accessing the newly stored parameters stored within the RFID tag's memory with the microcontroller over the digital bus, and
adapting the alarm and monitoring algorithm preloaded into the microcontroller according to the newly stored parameters.

### Claim 2

A method of reading at least one sensor value from a warning device for monitoring a health status of a bearing having a close range wireless interface, the method comprising the steps of:
providing an RFID tag having an integrated circuit with memory for storing and processing information, and a radio for modulating and demodulating a radio-frequency signal,
providing an antenna for receiving and transmitting the modulated and demodulated signal, and connected to the RFID tag,
providing a digital bus for connecting a microcontroller to the RFID tag, and
uploading at least one stored sensor value from the RFID tag's memory through the antenna.

### Claim 3 (depends on 2)

The method according to claim 2, wherein the at least one sensor value reading is one of a velocity, enveloped acceleration and a temperature of a bearing disposed within a piece of rotating industrial equipment.

### Claim 4 (depends on 2)

The method according to claim 2, wherein the at least one sensor value reading is a time waveform.

### Claim 5 (depends on 2)

The method according to claim 2, wherein the at least one sensor value reading is an FFT.

### Claim 6 (depends on 2)

The method according to claim 2, wherein the digital bus is a high speed serial bus.

### Claim 7 (depends on 2)

The method according to claim 2, wherein the at least one sensor value stored within the RFID tag's memory is concurrently stored within a memory disposed within the microcontroller.

### Claim 8

A method of reading sensor values from or writing programming alarm and monitoring algorithm parameters into a warning device for monitoring a health status of a bearing having a close range wireless interface, the method of reading or writing comprising the steps of:
providing an RFID tag having an integrated circuit with memory for storing and processing information, a radio for modulating and demodulating a radio-frequency signal, an antenna for receiving and transmitting the modulated and demodulated radio-frequency signal,
providing a digital bus mounted to a circuit board, the high speed serial bus connecting a microcontroller to the RFID tag, wherein the steps of:
downloading the parameters through the antenna and storing them into the memory, accessing the newly stored parameters stored within the memory with the microcontroller over the digital bus, and adapting the alarm and monitoring algorithm according to the stored parameters are carried out during the writing operation, and wherein the steps of:
uploading at least one stored sensor value from the memory to the radio, and wherein transmitting the uploaded at least one stored sensor value with the radio via the antenna are carried out during the reading operation.

### Claim 9 (depends on 7)

The method according to claim 7, wherein the at least one sensor value reading is one of a velocity, enveloped acceleration and a temperature of a bearing disposed within a piece of rotating industrial equipment.

### Claim 10 (depends on 7)

The method according to claim 7, wherein the at least one sensor value reading is a time waveform.

### Claim 11 (depends on 7)

The method according to claim 7, wherein the at least one sensor value reading is an FFT.

### Claim 12 (depends on 7)

The method according to claim 7, wherein the digital bus is a high speed serial bus.
