Sensor data anomaly detector

Patent metadata

Field	Value
Publication number	US-9764712-B2
Application number	US-201415117375-A
Country	US
Kind code	B2
Filing date	Apr 9, 2014
Priority date	Apr 9, 2014
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

Methods and systems are provided that are effective to generate an alarm for a vehicle. The methods include receiving, by a device, a first sensor value from a first sensor for the vehicle. The methods further include receiving, by the device, a second sensor value from a second sensor for the vehicle. The methods further include retrieving, by the device, an instruction from a memory disposed in the vehicle while the memory is in a write-protected mode. The methods further include evaluating, by the device, the first sensor value and the second sensor value based on the instruction. The methods further include determining, by the device, that the first sensor value is outside a range associated with the first sensor based on the evaluation. The methods further include transforming, by the device, the determination into an alarm.

First claim

What is claimed is:

1. A method to generate an alarm for a vehicle, the method comprising, by a device:
receiving a first sensor value from a first sensor for the vehicle;
receiving a second sensor value from a second sensor for the vehicle;
receiving a model, wherein the model includes historical data that corresponds to the first sensor;
storing the model in a memory, disposed in the vehicle, while the memory is in a write-access mode;
retrieving an instruction from the memory disposed in the vehicle while the memory is in a write-protected mode;
evaluating the first sensor value and the second sensor value based on the instruction;
determining a difference between the first sensor value and the historical data;
determining that the first sensor value is outside a range associated with the first sensor based on the evaluation and based on the difference, wherein the range is based on the historical data that corresponds to the first sensor; and
transforming the determination that the first sensor value is outside the range, into the alarm.

2. The method of claim 1 , further comprising, prior to receiving the first and second sensor values, by the device, storing the instruction in the memory, while the memory is in the write-access mode.

3. The method of claim 2 , further comprising:
activating the write-access mode, while the vehicle is stopped; and
activating the write-protected mode, while the vehicle is in motion.

4. The method of claim 1 , wherein the instruction includes a threshold value, and wherein determining that the first sensor value is outside the range comprises comparing a difference between the first and second sensor values with the threshold value.

5. The method of claim 1 , wherein the vehicle includes a first vehicle and wherein the method further comprises, by the device:
receiving a third sensor value from a third sensor in a second vehicle;
determining a first difference between the first sensor value and the third sensor value;
determining a second difference between the second sensor value and the third sensor value; and
evaluating the first difference and the second difference based on the instruction,
wherein determining that the first sensor value is outside the range is further based on the evaluation of the first difference and the second difference.

6. The method of claim 1 , wherein receiving each of the first sensor value and the second sensor value comprises receiving a value corresponding to a location of the vehicle.

7. The method of claim 6 , wherein retrieving the instruction includes retrieving procedures that correspond to changes in the range as the vehicle moves in a path from a start location to a destination location.

8. A method to generate an alarm for a vehicle, the method comprising, by a device:
receiving a first sensor value from a first sensor for the vehicle;
receiving a second sensor value from a second sensor for the vehicle;
receiving first historical data that corresponds to the first sensor;
receiving second historical data that corresponds to the second sensor;
compiling the first historical data and the second historical data to generate a model;
storing the model in a memory, disposed in the vehicle, while the memory is in a write-access mode;
determining a first difference between the first sensor value and the first historical data;
determining a second difference between the second sensor value and the second historical data;
retrieving an instruction from the memory, disposed in the vehicle, while the memory is in a write-protected mode;
evaluating the first sensor value and the second sensor value based on the instruction;
evaluating the first difference and the second difference based on the instruction;
determining that the first sensor value is outside a range associated with the first sensor based on the evaluation of the first sensor value and the second sensor value, and further based on the evaluation of the first difference and the second difference, wherein the range is based on the first historical data that corresponds to the first sensor; and
transforming the determination that the first sensor value is outside the range, into the alarm.

9. A method to generate an alarm for a vehicle, the method comprising, by a device:
receiving a first sensor value from a first sensor for the vehicle;
receiving a second sensor value from a second sensor for the vehicle;
receiving a third sensor value from a third sensor outside of the vehicle;
determining a first difference between the first sensor value and the third sensor value;
determining a second difference between the second sensor value and the third sensor value;
retrieving an instruction from a memory, disposed in the vehicle, while the memory is in a write-protected mode;
evaluating the first sensor value and the second sensor value based on the instruction;
evaluating the first difference and the second difference based on the instruction;
determining that the first sensor value is outside a range associated with the first sensor based on the evaluation of the first sensor value and the second sensor value and further based on the evaluation of the first difference and the second difference, wherein the range is based on historical data that corresponds to the first sensor; and
transforming the determination that the first sensor value is outside the range, into the alarm.

10. The method of claim 9 , wherein receiving the third sensor value from the third sensor outside of the vehicle comprises receiving a value corresponding to a license plate of the vehicle.

11. The method of claim 9 , wherein receiving the third sensor value from the third sensor includes receiving the third sensor value from another vehicle in which the third sensor is located.

12. A system configured to generate an alarm for a vehicle, the system comprising:
a first sensor for the vehicle;
a second sensor for the vehicle; and
a processor configured to be in communication with the first sensor and the second sensor, wherein the processor is configured to perform or cause a device to perform:
store a model in a memory, while the memory is in a write-access mode, wherein the model includes historical data that corresponds to the first sensor;
retrieve an instruction from the memory, while the memory is in a write-protected mode;
evaluate, based on the instruction, a first sensor value from the first sensor and a second sensor value from the second sensor;
determine a difference between the first sensor value and the historical data;
determine that the first sensor value is outside a range associated with the first sensor based on the evaluation and based on the difference, wherein the range is based on the historical data that corresponds to the first sensor; and
transform the determination that the first sensor value is outside the range, into the alarm.

13. The system of claim 12 , wherein the processor is further configured to perform or cause the device to perform:
store the instruction in the memory, while the memory is in the write-access mode.

14. The system of claim 13 , wherein each of the first sensor value and the second sensor value corresponds to a location of the vehicle and wherein the instruction includes procedures that correspond to changes in the range as the vehicle moves in a path from a start location to a destination location.

15. The system of claim 12 , further comprising:
a speedometer configured to be in communication with the memory,
wherein the speedometer is configured to detect a speed of the vehicle, and
wherein th

Assignees

• Empire Technology Dev Llc

Inventors

• Ur Shmuel
• Hirshberg David
• Bushinsky Shay
• Dabija Vlad Grigore
• Fligler Ariel

Classifications

• G06F21/577

  Assessing vulnerabilities and evaluating computer system security · CPC title

• B60W2050/0005

  Processor details or data handling, e.g. memory registers or chip architecture · CPC title

• B60W2050/0215

  Sensor drifts or sensor failures · CPC title

• B60R25/102 Primary

  a signal being sent to a remote location, e.g. a radio signal being transmitted to a police station, a security company or the owner · CPC title

• G06F30/23 Primary

  using finite element methods [FEM] or finite difference methods [FDM] · CPC title