Programmable microprocessor based motion-sensitive alarm

• US 5,317,304 A
• Filed: 10/23/1991
• Issued: 05/31/1994
• Est. Priority Date: 01/17/1991
• Status: Expired due to Fees

• Current Assignee: Sonicpro International Incorporated
• Original Assignee: Sonicpro International Incorporated
• Inventors: Choi, Alexander K.
• Primary Examiner(s): Williams, Hezron E.
• Assistant Examiner(s): Oda, Christine K.
• Application Number:
  US07/781,599
• Time in Patent Office: 951 Days
• Field of Search: 340/568, 340/571, 340/572, 340/543, 340/566
• US Class Current: 340/571
• CPC Class Codes: G08B 13/1418 Removal detected by failure in electrical connection between the appliance and a control centre, home control panel or a power supply
• CPC Class Codes: G08B 13/1436 with motion detection

Abstract

An anti-theft device and method includes a motion sensor for detecting motion and generating signals. The present invention also includes an anti-tamper mechanism for sounding an alarm when the apparatus is tampered with. The motion sensor and anti-tamper sensor are coupled to a computer which is in stand-by mode most of the time to conserve energy. When signals are sent to the computer, its software interprets the signals and generates an alarm when the computer determines that at least one of a plurality of predetermined motion values are met. The predetermined motion values include frequency of motion, duration of motion and intensity of motion. The alarm is sounded in increments of varying duration according to the interpretation of the signals by the software, thus providing warning signals and full alarms.

Claims

1. An apparatus for detecting tampering and theft in and of equipment, said apparatus operating in combination with a power supply for supplying power to said apparatus, said apparatus comprising:

power source means for obtaining power from said power supply;

user interface means for user changeable program setting of a predetermined motion value in said apparatus;

means for maintaining memory of said predetermined motion value after said value has been set;

motion sensor means for detecting motion of said equipment; and

logic means for determining whether a motion detected by said motion sensor means is equivalent to said predetermined motion value when said motion sensor means detects that said detected motion has occurred,

said logic means being operatively coupled to said motion sensor means for detecting motion and to said power source means for supplying power,

said motion sensor means, said logic means, said user interface means, and said means for maintaining memory of said predetermined motion value drawing substantially no power from said power source means until said motion sensor means detects that said detected motion has occurred.

2. The apparatus as recited in claim 1, wherein said motion sensor means for detecting motion is a mercury switch.

3. The apparatus as recited in claim 1, wherein said plurality of motion values includes a motion intensity value, a frequency of motion value, and a duration of motion value.

4. The apparatus as recited in claim 2, wherein said motion sensor means for detecting motion is a piezo sensor.

5. The apparatus as recited in claim 1, further comprising means for generating an alarm signal in increments of varying duration, said means for generating operatively coupled and responsive to said logic means, said increments of varying duration established according to said determination of equivalence between said detected motion and said predetermined motion value.

6. The apparatus as recited in claim 1, wherein said substantially no power drawn by said logic means is power of about a few micro-amperes.

7. The apparatus as recited in claim 1, wherein said predetermined motion value includes a plurality of motion parameters.

8. The apparatus as recited in claim 7, wherein said plurality of motion parameters includes a frequency of motion value.

9. The apparatus as recited in claim 7, wherein said plurality of motion parameters includes a duration of motion value.

10. The apparatus as recited in claim 7, wherein said plurality of motion parameters includes a motion intensity value.

11. An apparatus for detecting tampering and theft in and of equipment, said apparatus operating in combination with a power supply for supplying power to said apparatus, said apparatus comprising:

power source means for obtaining power from said power supply;

a motion sensor which detects motion of said equipment and generates at least one motion signal when said motion is detected;

a computer which receives said at least one motion signal;

user interface means for user changeable program setting of at least one of a plurality of predetermined motion values in said computer;

said computer including memory means for maintaining memory of said at least one predetermined motion value;

said motion sensor, said computer, said user interface means, and said memory means for maintaining memory of said at least one predetermined motion value drawing substantially no power from said power source means until said motion sensor means detects that said detected motion has occurred; and

software executed by said computer for interpreting said at least one motion signal and generating an alarm signal when said software determines that at least one of said plurality of predetermined motion values are exceeded.

12. The apparatus as recited in claim 11, wherein said plurality of predetermined motion values includes a frequency of motion value.

13. The apparatus as recited in claim 11, wherein said plurality of predetermined motion values includes a duration of motion value.

14. The apparatus as recited in claim 11, wherein said plurality of predetermined motion values includes an intensity of motion value.

15. The apparatus as recited in claim 11, wherein said plurality of predetermined motion values includes a frequency of motion value, a duration of motion value, and an intensity of motion value.

16. The apparatus as recited in claim 11, wherein said motion sensor is a mercury switch.

17. The apparatus as recited in claim 11, wherein said motion sensor is a piezo sensor.

18. The apparatus as recited in claim 11, wherein said alarm signal is generated in increments of varying duration according to said interpretation of said at least one motion signal.

19. The apparatus as recited in claim 11, wherein said substantially no power is power of about a few micro-amperes sufficient to maintain said computer status and said memory, said status including programmed features, until said motion sensor means detects that said detected motion has occurred.

20. An apparatus for detecting theft of equipment, said apparatus comprising:

a motion sensor which detects motion of said equipment and generates at least one whenever said motion is detected;

power means for supplying power to said apparatus; and

a computer which receives said at least one signal and which draws substantially no power from said power means until receipt of said at least one signal from said motion sensor.

21. The apparatus as recited in claim 20, which is mounted external to said equipment.

22. The apparatus as recited in claim 20, which is mounted internal to said equipment.

23. The apparatus as recited in claim 20, wherein said computer draws power of about a few micro-amperes sufficient to maintain said computer status, said status including programmed features, until receipt of said at least one signal from said motion sensor.

24. An anti-theft apparatus attached to equipment for detecting tampering of said apparatus, said apparatus comprising:

anti-tamper means for generating at least one signal when an attempt is made to remove said apparatus from said equipment;

power means for supplying power to said apparatus, and

a computer which receives said at least one signal and which draws substantially no power from said power means until receipt of said at least one signal from said anti-tamper means.

25. The apparatus as recited in claim 24, wherein said computer draws power of about a few micro-amperes sufficient to maintain said computer status, said status including programmed features, until receipt of said at least one signal from said anti-tamper means.

26. An anti-theft apparatus attached to equipment for detecting attempts of theft of said equipment, said apparatus operating in combination with a power supply for supplying power to said apparatus, said apparatus comprising:

power source means for obtaining power from said power supply;

anti-tamper means for generating at least one tamper signal when an attempt is made to remove said apparatus from said equipment;

motion sensing means for generating at least one motion signal when said apparatus is moved more than a predetermined amount;

a microprocessor configured to receive said tamper signal and said at least one motion signal and to make a determination whether said tamper and said motion signals meet predetermined criteria and to generate at least one response signal according to said determination;

said microprocessor drawing substantially no power from said power source means until receipt of said tamper signal or said motion signal; and

alarm means for receiving said at least one response signal from said microprocessor and generating an alarm signal when said response signal has predetermined characteristics.

27. The apparatus as recited in claim 26, wherein said microprocessor draws power of about a few micro-amperes sufficient to maintain said microprocessor complete status, said status including programmed features.

28. An apparatus for detecting and indicating motion of personal computer equipment, said apparatus comprising:

motion sensing means for detecting motion of said apparatus;

signal means operatively coupled to said motion sensing means for generating a signal when said motion sensing means detects motion;

mode enabling means for enabling modes of operation of said apparatus, said enabling means comprising interface means for interfacing between said signal means and means for inputting commands, said mode enabling means being distinct and operating independently from said personal computer equipment;

said signal means responsive to said commands from said mode enabling means;

announcement means receiving said signal for indicating when said motion sensing means has detected motion;

mounting means for connecting said apparatus to said personal computer equipment;

power supply means for supplying power to said apparatus; and

wherein said signal means draws substantially no power from said power source means until said motion sensing means detects motion.

29. The apparatus as recited in claim 28, wherein said substantially no power is power equivalent to about a few microamperes.

30. The apparatus as recited in claim 28, wherein said substantially no power is power sufficient to maintain status of said mode enabling means, including status of commands provided by said means for inputting commands.

31. The apparatus as recited in claim 28, wherein said power supply means for supplying power to said apparatus is a battery.

32. An electrically powered apparatus, receiving power from an electrical power supply, for detecting predetermined motions indicative of tampering or theft in and of equipment, said apparatus comprising:

power source means for providing electrical power from said electrical power supply to said apparatus;

user interface means for user programming of said apparatus;

said user programming including user setting of predetermined motion values;

motion sensor means for detecting motion of said equipment;

said motion sensor means generating pulse signals upon the occurrence of a sufficient prearranged amount of motion;

microprocessor means having a plurality of operating modes including an active mode and a stand-by mode;

said active mode being activatable manually or by receipt of said pulse signals;

said stand-by mode being activatable automatically in the absence of said pulse signals;

said microprocessor means including memory means;

said microprocessor means for determining whether a motion detected by said motion sensor means is greater than any of said predetermined motion values when said motion sensor means detects that said detected motion has occurred;

said microprocessor being operatively coupled to said motion sensor means to receive said pulse signals for detecting motion;

said motion sensor means being operatively coupled to said power source means but with the proviso that said motion sensor means draws no power until said motion sensor means detects that said detected motion has occurred;

said microprocessor drawing substantially no power when in said stand-by mode, said substantially no power being power only sufficient to maintain status of said microprocessor in said memory;

said status including said user set predetermined motion values;

said microprocessor automatically switching to said active mode when said motion sensor means detects that said detected motion has occurred.

33. A method of detecting theft or tampering in and of equipment, said method comprising the steps of:

continuously sensing motion while said apparatus is operating;

generating pulse signals upon the occurrence of a sufficient prearranged motion;

activating a processor from a low-power stand-by mode to an normal-power active mode upon the receipt of at least one said generated pulse signal;

comparing characteristics of said pulse signals with predetermined motion values to determine if any of said predetermined motion values are exceeded;

generating an alarm if any of said predetermined motion values are exceeded;

deactivating said processor from sad active mode to said stand-by mode if said predetermined motion values are not exceeded.

34. The method in claim 33, wherein said pulse characteristics include frequency, intensity, and duration.

35. The method of claim 33, wherein said method further comprises the step of being programmed by a user.