Self-powered system for measuring and storing consumption of utility meter

• US 4,132,981 A
• Filed: 10/21/1976
• Issued: 01/02/1979
• Est. Priority Date: 10/21/1976
• Status: Expired due to Term

• Current Assignee: Schlumberger Resource Management Services Incorporated (Schlumberger NV)
• Original Assignee: Rockwell International Corporation
• Inventors: White, Raymond V.
• Primary Examiner(s): Pitts, Harold I.
• Application Number:
  US05/734,678
• Time in Patent Office: 803 Days
• Field of Search: 340/203, 340/151, 340/150
• US Class Current: 340/870.02
• CPC Class Codes: G01D 4/006 Remote reading of utility meters to a non-fixed location, i.e. mobile location
• CPC Class Codes: G01F 15/0755 involving digital counting
• CPC Class Codes: G01R 21/00 Arrangements for measuring electric power or power factor G01R7/12 takes precedence
• 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 system is disclosed for storing signals indicative of a customer'"'"'s consumption of a utility as measured by a meter, such as adapted to measure the flow of water, gas or electricity, for example, and for storing a corresponding data word to permit subsequent readout from the system of utility consumed and of a data word identifying the customer consuming the service, whereby the utility company providing the service may appropriately and accurately prepare a bill for the customer. This system comprises a meter or pulse generator responsive to the input from the utility company to the customer to provide a signal typically in the form of a pulse-like, electrical signal indicative of the consumption of a given quantity of the utility, a storage or memory means for storing a first data word indicative of the utility consumed and a second data word specifying the customer, and sequence control means for permitting interrogation of the memory means, whereby the data words indicative of utility consumed and the customer identification may be read out, typically by an external interrogation unit. The interrogation unit may typically comprise a portable unit including a storage mechanism such as a cassette, carried by a "meter reader" to each customer location. This system is self-powered, requiring only the application of either of a pulse-like, electrical signal of the utility meter or an interrogate signal from the interrogation unit for its complete energization, and operates in a first, pulse increment mode of operation to respond to the application of the meter signal and in particular the sensing of a particular voltage level of the meter signal to increment the currently-stored data word indicative of the previously-stored utility consumption, store the new incremented data word and thereafter deactuate the system. In a second, interrogation mode of operation, an interrogation signal from the interrogation unit actuates and energizes the system when the voltage level of the interrogation signal rises above a predetermined level, whereby the system reads from the system'"'"'s memory the stored data word indicative of the utility consumption and the customer'"'"'s identification, which both are applied to the interrogation unit, and thereafter the system is deactuated.

Claims

1. In a system without a local power supply for measuring and accumulating a manifestation of the consumption of a utility, comprising:

(a) meter means responsive to the utility consumption for generating a series of pulse-like, electrical signals, each indicative of the consumption of a given quantity of the utility;

(b) non-volatile memory means for storing an indication of the number of the pulse-like, electrical signals generated by said meter means, indicative of the total measured utility consumed;

(c) power conversion means for converting at least one of the pulse-like, electrical signals to provide solely that voltage for energizing said system, including detector means responsive to the initiation of a pulse-like, electrical signal for providing an initiate operate signal; and

(d) sequence control means responsive to the initiate operate signal for enabling the received pulse-like signal to be stored in said memory means, and thereafter providing a terminate operation signal effecting the deactuation of said system.

2. A measuring and accumulating system as claimed in claim 1, wherein there is further included incrementing means responsive to the occurrence of a pulse-like, electrical signal for incrementing the previous indication of the number of pulse-like, electrical signals stored in said memory means, and for storing the newly-incremented indication in said memory means.

3. The measuring and accumulating system as claimed in claim 2, wherein said incrementing means includes a serial adder circuit for receiving in serial fashion digital data indicative of the previously-stored indication of the number of pulse-like, electrical signals, and a plus one circuit for applying a signal to said serial adder circuit, whereby the previous indication of the number of pulse-like electrical signals is incremented by one.

4. The measuring and accumulating system as claimed in claim 2, wherein said sequence control means is responsive to the initiate operate signal for first reading out the previously-stored indication of the number of pulse-like, electrical signals stored in said memory means, secondly actuating said adding means to increment the read-out, previous indication of the number of pulse-like, electrical signals, and for re-storing in said memory means the incremented indication of the number of pulse-like, electrical signals.

5. The measuring and accumulating system as claimed in claim 4, wherein there is further included a serial shift register for receiving the incremented indication of the number of pulse-like, electrical signals as provided by said adding means.

6. The measuring and accumulating system as claimed in claim 1, wherein said memory means comprises a non-volatile, addressable memory comprising a plurality of MNOS elements capable of storing each bit of a data word providing the indication of the number of the pulse-like, electrical signals.

7. The measuring and accumulating system as claimed in claim 6, wherein said memory includes a shift register wherein the data word may be transferred between an addressed location within the memory means and said shift register.

8. In a system for measuring and accumulating as claimed in claim 1, and particularly adapted to be operated in conjunction with an external interrogation unit, said interrogation unit providing an interrogation request signal to said measruing and accumulating system, effecting the read-out from said memory means of the stored indication of the number of pulse-like, electrical signals and therefore the total measured utility consumed, and for applying same to said external interrogation unit.

9. The measuring and accumulating system as claimed in claim 8, wherein there is further included select means responsive to the application of a pulse-like, electrical signal from said meter means for operating said system in a first, pulse increment mode of operation wherein the previously -stored indication of the number of pulse-like, electrical signals is incremented, and in a second, interrogation mode of operation wherein the indication of the number of pulse-like, electrical signals as stored in said memory means is read out and applied to said external interrogation means.

10. The measuring and accumulating system as claimed in claim 9, wherein there is included a serial adder coupled to said memory means to receive data serially read out from said memory means indicative of the previously-stored indication of the number of pulse-like, electrical signals, an incrementing circuit and a shift register for receiving the incremented indication of the number of pulse-like, electrical signals, and said sequence control means is responsive in the first, pulse increment mode of operation to the initiate operate signal for shifting out the data from the memory means indicative of the previous indication of the number of pulse-like electrical signals, thereafter effecting the operation of the incrementing circuit and the serial adder to increment the previous indication of the number of pulse-like, electrical signals before storing the incremented indication in said shift register, thereafter shifting the incremented indication into said memory means, and thereafter generating the terminate operation signal effecting the deactuation of said system.

11. The measuring and accumulating system as claimed in claim 9, wherein said memory means includes a first addressed location for storing a first data word inciative of the number of pulse-like, electrical signals, and a second addressed location for receiving a second data word identifying the customer consuming the utility, and said sequencer means is responsive in the second, interrogation mode of operation to the initiate signal to successively read out from said memory means the first and second data words from the first and second addresses to be applied to said external interrogation unit.

12. The measuring and accumulating system as claimed in claim 9, wherein there is further included a master clock actuated in the first pulse increment mode of operation to provide a clock signal of a given frequency to said sequence control means to time the operations carried out in said first, pulse increment mode of operation.

13. The measuring and accumulating system as claimed in claim 12, wherein the external interrogation unit provides the interrogation request signal in the form of a train of clock pulses of said given frequency, said select means applying one of the output of said master clock or the interrogation request signal to said sequence control means dependent upon whether said system is operative in its first or second mode of operation.

14. The measuring and accumulating system as claimed in claim 13, wherein there is further included switch means for receiving the interrogation request clock signal and the master clock signal and responsive to the terminate operation signal for disconnecting same to said sequence control means.

15. The measuring and accumulating system as claimed in claim 13, wherein there is included address means for sequentially addressing said first and second address locations of said memory means, and said sequence control means in said second pulse interrogation mode, reads out the first data word from said first addressed location of said memory means, to be applied to said external interrogation unit, said address means being responsive to the completion of the first readout to address said second addressed location of said memory means, and thereafter said sequence control means effecting a readout of the second data word from said second addressed location of said memory means to be applied to said external interrogation unit.

16. The measuring and accumulating system as claimed in claim 15, wherein there is included a turn-off circuit, said address means responsive to the completion of reading from said second address location for providing a completeread manifestation, said turn-off circuit responsive to the read-complete manifestation for effecting a termination of the operation of said system.

17. In a system for measuring and accumulating as claimed in claim 8, wherein said external interrogation unit comprises a portable unit capable of being readily transported from one customer location to the next.

18. In a system for measuring and accumulating as claimed in claim 8, wherein said external interrogation unit comprises a centralized unit disposed remotely of said system and coupled by an electrical connector to said system for applying the interrogation request signal thereto.

19. A measuring and accumulating system as claimed in claim 1, wherein the pulse length of a pulse-like electrical signal as generated by said meter means is of a given length, and said sequence control means generates its terminate operation signal a period of time after the generation of the initiate operate signal, not in excess of said given length.

20. A system without a local power supply for measuring and accumulating a series of electrical signals, comprising:

(a) means for providing the series of the electrical signals;

(b) non-volatile memory means for successively storing the series of signals as each is received by said system;

(c) power conversion means for converting at least one of the electrical signals to provide solely that voltage for energizing said system and including detector means responsive to the receipt of the electrical signal for providing an initiate operation signal; and

(d) sequence control means responsive to the initiate operation signal for enabling the received electrical signal to be stored in said memory means and thereafter providing a terminate operation signal effecting the deactuation of said system.

21. A measuring and accumulating system as claimed in claim 20, wherein there is further included incrementing means responsive to the occurrence of a pulse-like, electrical signal for incrementing the previous indication of the number of pulse-like, electrical signals stored in said memory means, and for storing the newly-incremented indication in said memory means.

22. The measuring and accumulating system as claimed in claim 21, wherein said incrementing means includes a serial adder circuit for receiving in serial fashion digital data indicative of the previously-stored indication of the number of pulse-like, electrical signals, and a plus one circuit for applying a signal to said serial adder circuit, whereby the previous indication of the number of pulse-like, electrical signals is incremented by one.

23. The measuring and accumulating system as claimed in claim 22, wherein said sequence control means is responsive to the initiate operate signal for first reading out the previously-stored indication of the number of pulse-like, electrical signals stored in said memory means, secondly actuating said incrementing means to increment the read-out, previous indication of the number of pulse-like, electrical signals, and for re-storing in said memory means the incremented indication of the number of pulse-like, electrical signals.

24. The measuring and accumulating system as claimed in claim 20, wherein said memory means comprises a non-volatile, addressable memory comprising a plurality of MNOS elements capable of storing each bit of a data word providing the indication of the number of the pulse-like, electrical signals.

25. In a system for measuring and accumulating as claimed in claim 20, and particularly adapted to be operated in conjunction with an external interrogation unit, said interrogation unit providing an interrogation request signal to said measuring and accumulating system, effecting the readout from said memory means of the stored indication of the number of pulse-like, electrical signals and therefore the total measured utility consumed, and for applying same to said external interrogation unit.

26. The measuring and accumulating system as claimed in claim 25, wherein there is further included select means responsive to the application of a pulse-like, electrical signal from said meter means for operating said system in a first, pulse increment mode of operation wherein the previously-stored indication of the number of pulse-like, electrical signals is incremented, and in a second, interrogation mode of operation wherein the indication of the number of pulselike, electrical signals as stored in said memory means is read out and applied to said external interrogation unit.

27. The measuring and accumulating system as claimed in claim 26, wherein said memory means includes a first addressed location for storing a first data word indicative of the number of pulse-like, electrical signals, and a second addressed location for receiving a second data word identifying the customer consuming the utility, and said sequencer means is responsive in the second, interrogation mode of operation to the initiate signal to successively read out from said memory means the first and second data words from the first and second addresses to be applied to said external interrogation unit.

28. The measuring and accumulating system as claimed in claim 26, wherein there is further included a master clock actuated in the first, pulse increment mode of operation to provide a clock signal of a given frequency to said sequence control means to time the operations carried out in said first, pulse increment mode of operation.

29. The measuring and accumulating system as claimed in claim 28, wherein said external interrogation unit provides the interrogation request signal in the form of a train of clock pulses of said given frequency, said select means applying one of the output of said master clock or the interrogation request signal to said sequence control means dependent upon whether said system is operative in its first or second mode of operation.

30. In a system without local power supply for measuring the consumption of a utility by a customer and adapted to be interrogated by an external interrogation unit to read out a manifestation of the consumption of the utility consumed by the customer, comprising:

(a) a utility meter responsive to the utility consumed by said customer, for generating a pulse-like, electrical signal upon the occurrence of the consumption of a given quantity of the utility;

(b) coupling means for coupling said measuring and accumulating system to the external interrogation unit;

(c) non-volatile memory means for storing in a first address location thereof a first data word indicative of the number of pulse-like, electrical signals generated by said utility meter, indicating the total measured utility consumed by the customer, and for storing at a second address location of said memory means a second data word indicative of a customer identification number;

(d) power conversion means for converting either the pulse-like signals or an interrogation signal applied by the interrogation unit via said coupling means to said system, to provide solely that voltage for energizing said system;

(e) detector means responsive to the receipt of either of the pulse-like signal or the interrogate request signal from the external interrogation unit for providing an initiate operation signal;

(f) a select circuit responsive to the receipt of the pulse-like, electrical signal from said meter for operating said system in a first, pulse increment mode of operation and to the receipt of the interrogation signal from the external interrogation unit for operating said system in a second, pulse request mode of operation; and

(g) sequence control means responsive to the initiate operate signal in the first, pulse increment mode of operation for, first, reading out from said memory means the first data word and thereafter incrementing the read-out first data word by "1" before re-storing the incremented first data word in said first address location of said memory means, and responsive to the initiate operate signal in said second mode of operation for successively reading out from said first addressed location the first data word and thereafter reading out the second data word from said second address location of said memory means, both of the first and second data words to be applied through said coupling means to the external interrogation unit.

31. A measuring system as claimed in claim 30, wherein there is further included incrementing means responsive to the occurrence of a pulse-like, electrical signal for incrementing the first data word stored in said memory means, and for storing the newly-incremented indication in the first address location of said memory means.

32. The measuring system as claimed in claim 31, wherein said incrementing means includes a serial adder circuit for receiving in serial fashion the first data word, and a plus one circuit for applying a signal to said serial adder circuit, whereby the first data word is incremented by one.

33. The measuring system as claimed in claim 31, wherein said memory means comprises a non-volatile, addressable memory comprising a plurality of MNOS elements capable of storing each bit of the first and second data words.

34. The measuring and accumulating system as claimed in claim 30, wherein there is further included a master clock actuated in the first pulse increment mode of operation to provide a clock signal of a given frequency to said sequence control means to time the operations carried out in said first, pulse increment mode of operation.

35. The measuring and accumulating system as claimed in claim 34, wherein the external interrogation unit provides the interrogation request signal in the form of a train of a clock pulse of said given frequency, said select means applying one of the output of said master clock or the interrogation request signal to said sequence control means dependent upon whether said system is operative in its first or second mode of operation.

36. The measuring and accumulating system as claimed in claim 35, wherein there is included address means for sequentially addressing said first and second address locations of said memory means, and said sequence control means in said second, pulse interrogation mode, reads out the first data word from said first addressed location of said memory means, to be applied to the external interrogation unit, said address means being responsive to the completion of the first readout to address the second addressed location of said memory means, and thereafter said sequence control means effecting a readout of the second data word from said second addressed location of said memory means to be applied to the external interrogation unit.

37. The measuring and accumulating system as claimed in claim 36, wherein there is included a turn-off circuit, said address means responsive to the completion of reading from said second address location for providing a completeread manifestation, said turn-off circuit responsive to the read-complete manifestation for effecting a termination of the operation of said system.

38. A system without local power supply for measuring and accumulating a series of electrical signals, comprising:

(a) means for providing the series of the electrical signals;

(b) non-volatile memory means for successively storing each of the series of signals;

(c) power conversion means for converting one of the electrical signals to provide solely that voltage for energizing said system and responsive to the one electrical signal for producing an initiate operation signal; and

(d) means responsive to the initiate operation signal for enabling the received electrical signal to be stored in said memory means.

39. The measuring and accumulating system as claimed in claim 38, wherein said storing means develops a terminate operation signal after the storing of the received electrical signal, thus effecting the deactuation of said system.