Integrated tamper detection system and methods
The present application describes an integrated module. The integrated module includes a microcontroller, an inertial measurement unit (IMU), a low-power accelerometer, and an environmental sensor. A distance between the environmental sensor and the IMU is greater than a distance between the IMU and the low-power accelerometer. The present application also describes a method of making an integrated module. The present application also describes a tamper detection system.
1. An integrated module comprising:
a microcontroller;
an inertial measurement unit (IMU) including an accelerometer;
a low-power accelerometer; and
an environmental sensor,
wherein a distance between the environmental sensor and the IMU is greater than a distance between the IMU and the low-power accelerometer.
2. The integrated module according to claim 1 , wherein the distance between the IMU and the low-power accelerometer is greater than a distance between the IMU and the microcontroller.
3. The integrated module according to claim 1 , further comprising a light sensor.
4. The integrated module according to claim 3 , wherein a distance between the light sensor and the IMU is less than the distance between the IMU and the low-power accelerometer.
5. The integrated module according to claim 1 , further comprising a microphone.
6. The integrated module according to claim 5 , wherein a distance between the microphone and the IMU is greater than the distance between the IMU and the low-power accelerometer.
7. The integrated module according to claim 1 , wherein the environmental sensor is selected from the group consisting of a temperature sensor, pressure sensor, humidity sensor and combinations thereof.
8. The integrated module according to claim 1 , wherein the distance between the environmental sensor and the IMU ranges between 8 to 10 mm.
9. The integrated module according to claim 1 , wherein the distance between the low-power accelerometer and the IMU ranges between 6.5 and 8.5 mm.
10. A method of making an integrated module comprising:
providing a board;
locating a microcontroller; an inertial measurement unit (IMU), a low-power accelerometer, an environmental sensor, and
arranging the microcontroller, the IMU, the low-power accelerometer, and the environmental sensor on the board,
wherein a distance between the IMU and the low-power accelerometer is greater than a distance between the IMU and the microcontroller, and
wherein a noise target between the IMU and low-power accelerometer is less than half of a noise target between the IMU and microcontroller.
11. The method of making the integrated module according to claim 10 , wherein the locating and arranging steps include a light sensor.
12. The method of making the integrated module according to claim 11 , wherein a distance between the light sensor and the IMU is less than the distance between the IMU and the low-power accelerometer.
13. The method of making the integrated module according to claim 10 , wherein the locating and arranging steps include a microphone.
14. The method of making the integrated module according to claim 13 , wherein a distance between the microphone and the IMU is greater than the distance between the IMU and the low-power accelerometer.
15. The method of making the integrated module according to claim 14 , wherein a distance between the environmental sensor and the IMU is greater than the distance between the IMU and the low-power accelerometer.
16. The method of making the integrated module according to claim 15 , wherein the environmental sensor is selected from the group consisting of a temperature sensor, pressure sensor, humidity sensor and combinations thereof.
17. A tamper detection system comprising:
a consumer article; and
an integrated module including a microcontroller, an inertial measurement unit (IMU) including an accelerometer, a low-power accelerometer; and an environmental sensor arranged on or in the consumer article.
18. The tamper detection system of claim 17 , wherein the consumer article includes a bag, purse, briefcase, wallet or luggage.
19. The tamper detection system of claim 17 , wherein a distance between the environmental sensor and the IMU is greater than a distance between the IMU and the low-power accelerometer, and wherein the distance between the IMU and the low-power accelerometer is greater than a distance between the IMU and the microcontroller.
20. The tamper detection system of claim 17 , wherein the integrated module further includes a light sensor and a microphone.