Portable battery operated power managed event recorder and interrogator system

• US 5,835,025 A
• Filed: 05/14/1997
• Issued: 11/10/1998
• Est. Priority Date: 05/14/1997
• Status: Expired due to Fees

• Current Assignee: US Army Corps of Engineers (U.S. Department Of Defense)
• Original Assignee: US Army Corps of Engineers (U.S. Department Of Defense)
• Inventors: Clark, Charles H., Zufelt, Jon E., Harjes, Henry H. Jr.
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): Edwards, Jr., Timothy
• Application Number:
  US08/856,450
• Time in Patent Office: 545 Days
• Field of Search: 340/825.31, 340/580, 340/870.02, 340/601, 340/540, 73/170.16, 73/170.26
• US Class Current: 340/870.02
• CPC Class Codes: G01D 9/005 Solid-state data loggers

Abstract

A data acquisition apparatus that includes a recorder device of an event'"'"'sime and date signified by the opening of an external trigger switching circuit in combination with a complimentary interrogator device for collecting data from the recorder device. The recorder device'"'"'s components comprise a battery powered source with a power regulator, a processor, a dip-switch identifier, a programmable read only memory, a clock/ calender with random access memory, a timing/control subcircuit interface that connects to the external trigger switching circuit(s) and an output interface port for data transmissions with the interrogator device. The recorder'"'"'s timing/control subcircuit interface extends battery life by sensing and transmitting electrical pulses through each external trigger switching circuit. The interrogator device is portable and has multiple functional capabilities. This interrogator comprise an regulated battery power source, a processor, a programmable ROM, an event storage RAM, a clock/calender subcircuit, an optional liquid crystal display display, and an input/output interface port to communicate with the recorder device.

Claims

1. A self-contained data acquisition apparatus comprising:

an environmentally sealed housing for an event recorder device of dates and times by sensing opening of at least one external trigger circuit to the recorder device, dimension of the recorder device constructed dimensionally for hand-held use the housing including;

a) a processor means for controlling operation of the recorded device wherein the processor means includes a preprogrammed read only memory (ROM) containing control instructions for the recorder device;

b) a regulated power means for powering the recorded device, the regulated power means is a powered by a battery;

c) a clock/calender means that includes random access memory (RAM) for storage of the dates and times of events caused by interruption of the at least one external trigger circuit;

d) a timing and control interface means for;

I) interfacing with the at least one trigger circuit, ii) generating and controlling a timed voltage pulse which test the integrity of the state of the at least one trigger circuit, the at least one trigger circuit'"'"'s length determines the pulse'"'"'s return time and thus by sensing said return time optimally conserves the recorder battery, and iii) controlling power flow to the processor means; and

e) an interrogation interface means for communicating data to and from the recorder device.

2. The recorder device of claim 1 wherein the timing and control interface means includes:

a. an oscillator in combination with a ripple counter;

b. a watchdog timer/power monitor component;

c. a status latch component;

d. a state change detector; and

e. logic circuit means for generating control signals for power flow control to the processor means.

3. The recorder device according to claim 1 wherein the at least one external triggering circuit to the recorder device is an ice motion detector.

4. The recorder device according to claim 1 wherein the at least one external triggering circuit to the recorder device is a magnetic switch.

5. The recorder device according to claim 1 wherein the at least one external triggering circuit to the recorder device is an infrared switch.

6. The data acquisition apparatus of claim 1 that further comprises an interrogation device for use with the recorder device for retrieving data of the dates and times of the at least one trigger circuit opening, the interrogation device is contained in an environmentally sealed housing, the housing including:

a. a second processor means for controlling operation of the interrogation device wherein the second processor means includes a second preprogrammed ROM containing control instructions for the second processor;

b. a second regulated power means for power of the interrogation device, the second regulated power means is powered by a battery;

c. a second clock/calender means;

d. a bus arbitration selection means for input/output control from the interrogation device;

e. a recorder interface means for communicating data to and from the recorder device; and

f. an event storage RAM means.

7. The recorder device according to claim 6 wherein the processor means includes an identification dip-switch for identification of the recorder device whereby the interrogation device in a collecting data mode from a recorder device can uniquely identify a particular recorder device.

8. The recorder device according to claim 6 wherein the clock/calender means is presettable and programmed by the interrogator device'"'"'s second clock/calender means by the second processor means when both devices are connected thereby synchronizing both device'"'"'s time and date.

9. The interrogation device of claim 6 that further comprises a keyboard means and a liquid crystal display means.

10. The interrogation device of claim 6 that further comprises an RS-232 port for data communications with a personal computer.