Wireless telemetry using voltage and pulse intervals

Patent metadata

Field	Value
Publication number	US-9746388-B2
Application number	US-201113272939-A
Country	US
Kind code	B2
Filing date	Oct 13, 2011
Priority date	Jun 29, 2011
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

According to techniques of this disclosure in various examples, a wireless signaling system may include a stationary element such as a stator and a non-stationary element such as a rotor. The stationary element includes a stationary element controller. The stationary element is configured to transmit a wireless signal comprising a pair of pulses. The non-stationary element comprising a non-stationary element controller. The non-stationary element is configured to receive the wireless signal from the stationary element controller, measure a transition in voltage of each of the pulses and a time interval between the pulses, and interpret a signal based on the transition in voltage of each of the pulses and the time interval between the pulses.

First claim

What is claimed is:

1. A wireless signaling system comprising:
a stationary element device comprising a stationary element controller, the stationary element device configured to transmit a wireless signal comprising a pair of pulses; and
a non-stationary element device comprising a non-stationary element controller, the non-stationary element device configured to:
receive the wireless signal from the stationary element controller;
measure a transition in voltage of each of the pulses and a time interval between said each of the pulses; and
interpret the wireless signal based on the transition in the voltage of said each of the pulses and the time interval between said each of the pulses,

wherein the non-stationary element controller is further configured to compare the transition in the voltage of said each of the pulses to a transition threshold, and if the transition in the voltage of said each of the pulses is more than the transition threshold, then to compare the time interval between said each of the pulses with a directory of signals indicated by a value of the time interval,
wherein if the transition in the voltage of said each of the pulses is measured to be greater than the transition threshold and the time interval between said each of the pulses matches a first reference interval, then the wireless signal is interpreted to indicate a calibration mode for the non-stationary element device, and
wherein if the transition in the voltage of said each of the pulses is measured to be greater than the transition threshold and the time interval between said each of the pulses matches a second reference interval, then the wireless signal is interpreted to indicate a data collecting mode.

2. The wireless signaling system of claim 1 , wherein the stationary element device comprises a stator, and the non-stationary element device comprises a rotor.

3. The wireless signaling system of claim 1 , wherein the non-stationary element controller is further configured to compare the transition in the voltage of said each of the pulses to the transition threshold, and if the transition in the voltage of said each of the pulses is less than the transition threshold, then to reject said each of the pulses.

4. The wireless signaling system of claim 3 , wherein the non-stationary element controller is further configured to use the transition threshold of between 0.5 and 5 volts.

5. The wireless signaling system of claim 1 , wherein the pair of pulses is a first pair of pulses and the stationary element device is further configured to transmit the wireless signal to comprise a second pair of pulses, wherein the second pair of pulses is separated from the first pair of pulses by a pair interval, and the non-stationary element controller is further configured to interpret a second signal based at least in part on the pair interval.

6. The wireless signaling system of claim 5 , wherein the stationary element device is further configured to transmit the wireless signal to comprise a third pair of pulses, separated from the second pair of pulses by the pair interval, wherein each of the first, second, and third pairs of pulses has a same time interval between said each of the pulses, wherein the non-stationary element controller is further configured to interpret a third signal based on receiving any two pairs of the pulses out of the first, second and third pairs of pulses separated by the pair interval.

7. The wireless signaling system of claim 1 , wherein the stationary element device is further configured to transmit a triplet of pairs of voltage pulses, wherein the triplet comprises first, second, and third pairs of two pulses each, with a pair interval between the second and third pairs of said two pulses that is the same as the pair interval between the first and second pairs of said two pulses, wherein the non-stationary element controller is further configured to interpret the triplet of pairs in a selected interpretation as long as the non-stationary element controller is able to receive and interpret at least two of the first, second, and third pairs of said two pulses.

8. The wireless signaling system of claim 1 , wherein the non-stationary element controller is further configured such that said interpreting the wireless signal based on the transition in the voltage of said each of the pulses and the time interval between said each of the pulses comprises:
checking whether a starting voltage is above or below an intermediate mode cutoff voltage;
if the starting voltage is above the intermediate mode cutoff voltage, then using a normal voltage mode to interpret the commands or data from the pair of pulses; and
if the starting voltage is below the intermediate mode cutoff voltage, then using an intermediate voltage mode to interpret the commands or the data from the pair of pulses.

9. The wireless signaling system of claim 8 , wherein the non-stationary element controller is further configured such that in the normal voltage mode, the non-stationary element controller is configured to compare said each of the pulses with a normal mode pulse width threshold, and in the intermediate voltage mode the non-stationary element controller is configured to compare said each of the pulses with an intermediate mode pulse width threshold that is longer than the normal mode pulse width threshold.

10. The wireless signaling system of claim 1 , wherein the non-stationary element controller is further configured such that said interpreting the wireless signal based on the transition in the voltage of said each of the pulses and the time interval between said each of the pulses comprises:
checking whether a starting voltage is above or below a degraded mode cutoff voltage; and
if the starting voltage is below the degraded mode cutoff voltage, then entering a dormant mode and refraining from attempting to interpret the wireless signal.

11. The wireless signaling system of claim 1 , wherein the stationary element device and the non-stationary element device are inductively coupled, wherein the wireless signal is configured to provide RF signal power to the non-stationary element device, and wherein the non-stationary element device is further configured to:
generate a DC voltage based on receiving the wireless signal from the stationary element controller, wherein the pair of pulses create a drop in the generated DC voltage at the non-stationary element device.

12. A wireless signaling method comprising:
transmitting a wireless signal from a stationary element device, the wireless signal comprising a pair of pulses;
receiving the wireless signal from the stationary element device with a non-stationary element device;
measuring, with a non-stationary element controller comprised in the non-stationary element device, a transition in voltage of each of the pulses and a time interval between said each of the pulses; and
interpreting, with the non-stationary element controller, the wireless signal based on the transition in the voltage of said each of the pulses and the time interval between said each of the pulses;
comparing, with the non-stationary element controller, the transition in the voltage of said each of the pulses to a transition threshold, and if the transition in the voltage of said each of the pulses is more than the transition threshold, then comparing the time interval between said each of the pulses with a directory of signals indicated by a value of the time interval; and
comparing, with the non-stationary element controller, the transition in the voltage of said each of the pulses to the transition threshold, and if the transition in the voltage of said each of the pulses is mor

Assignees

• Malhan Vishal
• Ramamurthy Gautham
• Talikoti Vijay Tippanna
• John Latha
• Menon Deepa
• Hegde Krishna R
• Venkanna Ramesh
• Honeywell Int Inc

Inventors

• Malhan Vishal
• Ramamurthy Gautham
• Talikoti Vijay Tippanna
• John Latha
• Menon Deepa
• Hegde Krishna R
• Venkanna Ramesh

Classifications

• G01L3/10 Primary

  involving electric or magnetic means for indicating · CPC title