Universal send/receive utility usage data gathering system

• US 5,602,744 A
• Filed: 09/29/1994
• Issued: 02/11/1997
• Est. Priority Date: 09/29/1994
• Status: Expired due to Fees

• Current Assignee: KEMP MEEK Manufacturing Incorporated
• Original Assignee: KEMP MEEK Manufacturing Incorporated
• Inventors: Sparks, J. Travis, Meek, Jean L.
• Primary Examiner(s): Trammell, James P.
• Assistant Examiner(s): COLE, TONY MITCHELL
• Application Number:
  US08/315,142
• Time in Patent Office: 866 Days
• Field of Search: 364/514 R, 364/923.2, 364/483, 364/464.04, 364/940, 364/940.81, 364/920, 340/505, 340/870.01, 340/870.02, 324/103 R, 395/285, 395/286, 395/831
• US Class Current: 705/412
• CPC Class Codes: G01D 4/002 Remote reading of utility meters
• CPC Class Codes: G01D 4/006 Remote reading of utility meters to a non-fixed location, i.e. mobile location
• CPC Class Codes: G01F 15/063 using electrical means
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: G08C 17/04 using magnetically coupled devices
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

A utility usage data gathering system that is universally capable of operating with any other portion of another usage gathering system is disclosed. The system comprises of major portions, the universal transponder or actual device that accumulates utility usage and will universally relay accumulated usage to any reader/interrogator, and the universal reader that will universally read its own transponder or any other transponder. The system is based on standard micro-electronic chips and uses the same chips and logic in both the reader/interrogator and transponder. Each portion of the system, when polled by a foreign device, will determine what communication protocol is required and will respond to collect or transmit utility usage data in the proper protocol. Both portions of the apparatus use switchable multi-tapped antennae, capable of universal matching in order to transceive the modulated electromagnetic wave which contains the utility usage data.

Claims

1. A method of operating a universal send/receive utility usage data gathering system having a transponder unit and a reader/interrogator unit, capable of passing radiated electromagnetic signals between each other:

the transponder unit capable of generating internal software interrupts, responding to external usage pulse interrupts and interrogation signal interrupts, and providing a transponder data stream;

having an internal clock, a tamper signal, a leak detection algorithm, a pulse and usage counter, a stored serial number, and internal flags;

the interrogator unit capable of providing an interrogation signal, responding to the transponder data stream, internally storing the transponder data stream and responding to software and hardware interrupts;

having a read trigger, an emulation protocol selector, a communication port, a programmable oscillator and programmable gain amplifiers, a selectable multi-tapped antenna loop, a received data display, and flags;

comprising the transponder unit steps of;

a) listening for an interrupt in a low powered quiescent mode;

b) recognizing an interrupt;

c) waking up to logically process the interrupt;

d) determining the form of the interrupt, and,

if the interrupt is a software interrupt, then jumping to step (e);

if the interrupt is an external interrupt, then jumping to step (h);

e) incrementing the internal clock every four hours;

f) checking for tamper and leakage, and

if the tamper signal is present, then setting a tamper flag;

if leakage is detected, then setting the leak flag;

g) returning to step (a);

h) determining the type of external interrupt, and

if the interrupt is an external usage input, then jumping to step (i);

if the interrupt is an external interrogation signal then jumping to step (m);

i) arming the usage detection circuit;

j) awaiting the usage pulse;

k) processing and storing the pulse count in the usage counter, and

l) returning to step (a);

m) synchronizing to the interrogation signal;

n) counting the pulse content of the interrogation signal;

o) determining the type of interrogator;

p) setting the emulation response to match the type of interrogator;

q) polling the usage counter and serial number;

r) converting usage count and serial number to a matched emulation data stream;

s) transmitting the matched emulated transponder data stream;

t) resetting software and flags; and

u) returning to step (a).

15. The method of claim 1 wherein the transponder is capable of using the "Pro linK" protocol and wherein the following step is added after step (o):

o-1) if the interrogator is of the "Pro linK" type, jumping to step (v) changing step (p) to the following step;

p-1) if the interrogator is not of the "Pro linK" type, setting the emulation response to match the type of interrogator;

adding the following steps after step (u);

v) polling the usage counter, serial number, leakage detector, tamper detector, and other system parameters as provided by the transponder;

w) convening usage count, serial number, leakage detector, tamper detector, and other system parameters to the "Pro linK" protocol data stream;

x) transmitting the transponder data stream in "Pro linK" protocol; and

y) jumping to step (t).

16. The method of claim 1 wherein the transponder is using a licensed foreign manufacturer'"'"'s protocol, whereby the licensed protocol will provide true protocol and wherein the following step is added after step (o):

o-1) if the interrogator is using licensed protocol, jumping to step (v);

and adding the following steps after step (u);

v) polling the usage counter, serial number, tamper detector, and other system parameters that the licensed protocol provides;

w) convening usage count, serial number, tamper detector, and system parameters to the licensed protocol data stream;

x) transmitting the transponder data stream in licensed protocol; and

y) jumping to step (t).

17. The method of claim 1 wherein the transponder is capable of using "Pro linK" protocol, unlicensed (emulated) protocols and licensed protocols, whereby any of the licensed protocols will provide true protocol and wherein the following steps are added after step (o):

o-1) if the interrogator is using licensed protocol, jumping to step (v);

o-2) if the interrogator is using "Pro linK" protocol, jumping to step (z);

changing step (p) to read;

p-1) if the interrogator is not using licensed protocol, setting the emulation response to match the type of interrogator;

and adding the following steps after step (u);

v) polling the usage counter, serial number, tamper detector, and other system parameters that the licensed protocol provides;

w) convening usage count, serial number, tamper detector, and system parameters to the licensed protocol data stream;

x) transmitting the transponder data stream in licensed protocol;

y) jumping to step (t);

z) polling the usage counter, serial number, leakage detector, tamper detector, and other system parameters as provided by the transponder;

aa) converting usage count, serial number, leakage detector, tamper detector, and system parameters to the "Pro linK" protocol data stream;

bb) transmitting the transponder data stream in "Pro linK" protocol; and

cc) jumping to step (t).

2. A method of operating a universal send/receive utility usage data gathering system having a transponder unit and a reader/interrogator unit, capable of passing radiated electromagnetic signals between each other:

the transponder unit capable of generating internal software interrupts, responding to external usage pulse interrupts and interrogation signal interrupts, and providing a transponder data stream;

having an internal clock, a tamper signal, a leak detection algorithm, a pulse and usage counter, a stored serial number, and internal flags;

the interrogator unit capable of providing an interrogation signal, responding to the transponder data stream, internally storing the transponder data stream and responding to software and hardware interrupts;

having a read trigger, an emulation protocol selector, a communication port, a programmable oscillator and programmable gain amplifiers, a selectable multi-tapped antenna loop, a received data display, and flags;

comprising the interrogator unit steps of;

a) listening for an interrupt in a low powered quiescent mode;

b) recognizing an interrupt;

c) waking up to logically process the interrupt;

d) determining the form of the interrupt, and,

if the interrupt is a hardware interrupt, then jumping to step (e);

if the interrupt is a software interrupt, then jumping to step (h);

e) looking at the selector switch to determine the emulation protocol;

f) jumping to step (h);

g) looking at the software command to determine emulation protocol;

h) generating the required emulation protocol;

i) setting the programmable oscillator frequency to the chosen emulated interrogation signal;

j) selecting the appropriate windings on the multi-tapped antenna loop;

k) setting the proper system programmable gain;

l) sending the correct emulated interrogation signal;

m) waiting for the transponder data stream response;

n) reformatting the transponder data stream;

o) storing the reformatted transponder data stream;

p) displaying the received transponder data;

q) retransmitting the received data to the communication port;

r) resetting internal logic and flags, and

s) returning to step (a).

3. A method of operating a universal send/receive utility usage data gathering system having a foreign transponder unit and a universal reader/interrogator unit, capable of passing radiated electromagnetic signals between each other;

the foreign transponder unit capable of generating internal software interrupts, responding to external usage pulse interrupts and interrogation signal interrupts, and providing transponder data streams;

the universal interrogator unit capable of providing interrogation signals, responding to the transponder data streams, internally storing the transponder data streams, having a read trigger capable of providing a start read signal, and necessary communication ports or displays for transferring or reading stored transponder data streams;

comprising the interrogator unit steps of;

a) waiting for the start read signal;

b) transmitting an interrogation signal to the foreign transponder;

c) waiting for the transponder data stream;

d) determining the type of transponder and the corresponding pattern of interrogator unit response;

e) generating the required emulation protocol;

f) transmitting the emulated interrogation signal;

g) waiting for the transponder data stream response;

h) permanently storing the transponder data stream for later retrieval or display; and

i) returning to step (a).

4. The method of claim 3 wherein the universal interrogator contains a protocol table and associated protocol flag comprising the additional interrogator unit steps for step d):

d-1) clocking the transponder data stream;

d-2) comparing the clocked transponder data stream to the protocol table to determine the type of transponder;

d-3) setting the protocol flag.

5. The method of claim 3 wherein step (d) is skipped and the following steps are added after step (g):

g-1) determining if the transponder data stream response is valid;

g-2) if the data stream is valid skipping to step (h);

g-3) if the data stream is invalid, clocking the transponder data stream;

g-4) comparing the clocked transponder data stream to the protocol table to determine the type of transponder;

g-5) setting the protocol flag;

g-6) skipping to step (e).

6. A method of operating a universal send/receive utility usage data gathering system having a foreign transponder unit and a universal reader/interrogator unit, capable of passing radiated electromagnetic signals between each other;

the foreign transponder unit capable of generating internal software interrupts, responding to external usage pulse interrupts and interrogation signal interrupts, and providing transponder data streams;

the universal interrogator unit capable of providing interrogation signals, responding to the transponder data streams, internally storing the transponder data streams, and having a read trigger capable of providing a start read signal, a protocol table and associated protocol flag, and necessary communication ports or displays for transferring or reading stored transponder data streams;

comprising the interrogator unit steps of;

a) waiting for the start read signal;

b) transmitting an interrogation signal to the foreign transponder;

c) waiting for the transponder data stream response;

d) determining if the transponder data stream response is valid;

e) if the data stream is valid, skipping to step (j);

f) if the data stream is invalid, clocking the transponder data stream;

g) comparing the clocked transponder data stream to the protocol table to determine the type of transponder;

h) generating required emulation protocol;

i) skipping to step (b);

j) permanently storing the transponder data stream for later retrieval or display; and

k) returning to step (a).

7. The method of claim 6 wherein the protocol table contains a combination of emulated and licensed protocol, whereby the licensed protocol will provide true protocol, and step (h) is replaced with the following step:

h-1) generating required emulation protocol or true protocol.

8. The method of claim 6 whereby the following step is added after step (g):

g-1) setting the protocol flag.

9. The method of claim 7 whereby the following step is added after step (g):

g-1) setting the protocol flag.

10. The method of claim 6 wherein the interrogator unit further contains a programmable oscillator and programmable gain amplifiers and a selectable multi-tapped antenna loop and wherein the following steps are added before step (h):

g'"'"'-1) setting the programmable oscillator frequency to the chosen emulated interrogation signal;

g'"'"'-2) selecting the appropriate windings on the multi-tapped antenna loop;

g'"'"'-3) setting the proper system programmable gain.

11. The method of claim 7 wherein the interrogator unit further contains a programmable oscillator and programmable gain amplifiers and a selectable multi-tapped antenna loop and wherein the following steps are added before step (h):

g'"'"'-1) setting the programmable oscillator frequency to the chosen interrogation signal;

g'"'"'-2) selecting the appropriate windings on the multi-tapped antenna loop;

g'"'"'-3) setting the proper system programmable gain.

12. The method of claim 6 wherein the interrogator unit further contains a programmable oscillator and programmable gain amplifiers and a selectable multi-tapped antenna loop and wherein the following steps are added after step (g):

g-1) setting the protocol flag;

g-2) setting the programmable oscillator frequency to the chosen emulated interrogation signal;

g-3) selecting the appropriate windings on the multi-tapped antenna loop;

g-4) setting the proper system programmable gain.

13. The method of claim 7 wherein the interrogator unit further contains a programmable oscillator and programmable gain amplifiers and a selectable multi-tapped antenna loop and wherein the following steps are added after step (g):

g-1) setting the protocol flag;

g-2) setting the programmable oscillator frequency to the chosen interrogation signal;

g-3) selecting the appropriate windings on the multi-tapped antenna loop;

g-4) setting the proper system programmable gain.

14. A method of operating a universal send/receive utility usage data gathering system having a foreign transponder unit and a universal reader/interrogator unit, capable of passing radiated electromagnetic signals between each other;

the foreign transponder unit capable of generating internal software interrupts, responding to external usage pulse interrupts and interrogation signal interrupts, and providing transponder data streams;

the universal interrogator unit capable of providing interrogation signals, responding to the transponder data streams, internally storing the transponder data streams and responding to software and hardware interrupts having a read trigger capable of providing a start read signal, a protocol table and associated protocol flag, a programmable oscillator and programmable gain amplifiers, a selectable multi-tapped antenna loop, necessary communication ports or displays for transferring or reading stored transponder data streams;

the protocol table containing a combination of unlicensed (emulated) and licensed protocols whereby the licensed protocols will provide true protocols, comprising the interrogator unit steps of;

a) waiting for the start read signal;

b) transmitting an interrogation signal to the foreign transponder;

c) waiting for the transponder data stream response;

d) determining if the transponder data stream response is valid;

e) if the data stream is valid, skipping to step (n);

f) if the data stream is invalid, clocking the transponder data stream;

g) comparing the clocked transponder data stream to the protocol table to determine the type of transponder;

h) setting the protocol flag;

i) setting the programmable oscillator frequency to the chosen interrogation signal;

j) selecting the appropriate windings on the multi-tapped antenna loop;

k) setting the proper system programmable gain;

l) generating required emulation protocol or true protocol, as determined by the protocol flag;

m) skipping to step (b);

n) permanently storing the transponder data stream for later retrieval or display; and

o) returning to step (a).