ELECTRONIC DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT

• US 20150247877A1
• Filed: 02/27/2015
• Published: 09/03/2015
• Est. Priority Date: 02/28/2014
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: KANEMOTO, Kei
• Application Number:
  US14/633,496
• Publication Number:
  US 20150247877A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01C 19/5726 Signal processing
• CPC Class Codes: G01P 1/04 Special adaptations of driving means
• CPC Class Codes: G01P 15/097 by vibratory elements
• CPC Class Codes: G01P 15/125 by capacitive pick-up
• CPC Class Codes: G01P 2015/0814 for translational movement of the mass, e.g. shuttle type
• CPC Class Codes: G01P 3/44 for measuring angular speed G01P3/56 takes precedence
• CPC Class Codes: H03K 5/00006 Changing the frequency modulating pulses H03K7/00; frequency dividers H03K21/00 - H03K29/00; additive or subtractive mixing of two pulse rates into one G06F7/605; pulse rate dividers G06F7/68
• CPC Class Codes: H03K 5/02 by amplifying H03K5/04 takes precedence

Abstract

A composite sensor includes an angular velocity sensor element, an acceleration sensor element, and a drive circuit adapted to generate a first signal used to excite a vibration of the angular velocity sensor element, and the drive circuit supplies the acceleration sensor element with a second signal based on the first signal.

Claims

1. An electronic device comprising:

a first functional element;

a second functional element; and

a signal generator configured to generate a first signal used to excite the first functional element,

wherein the signal generator supplies the second functional element with a second signal based on the first signal.

2. The electronic device according to claim 1, further comprising:

an adjuster configured to adjust the first signal to form the second signal, the adjuster being disposed between the signal generator and the second functional element.

3. The electronic device according to claim 2, wherein

the adjuster includes at least one of a frequency multiplier and a frequency divider configured to adjust a frequency of the first signal.

4. The electronic device according to claim 2, wherein

the adjuster includes an amplitude adjuster configured to adjust an amplitude of the first signal.

5. The electronic device according to claim 1, wherein

the first functional element is an angular velocity sensor element, and

the second functional element is an acceleration sensor element.

6. The electronic device according to claim 5, wherein

the second signal has a different frequency than that of the first signal.

7. The electronic device according to claim 5, wherein

the first signal is a sinusoidal wave.

8. The electronic device according to claim 1, further comprising:

a third functional element,

wherein the third functional element is supplied with a third signal based on at least one of the first signal and the second signal.

9. An electronic apparatus comprising:

an electronic device according to claim 1.

10. An electronic apparatus comprising:

the electronic device according to claim 2.

11. An electronic apparatus comprising:

the electronic device according to claim 3.

12. An electronic apparatus comprising:

the electronic device according to claim 4.

13. An electronic apparatus comprising:

the electronic device according to claim 5.

14. An electronic apparatus comprising:

the electronic device according to claim 6.

15. A moving object comprising:

the electronic device according to claim 1.

16. A moving object comprising:

the electronic device according to claim 2.

17. A moving object comprising:

the electronic device according to claim 3.

18. A moving object comprising:

the electronic device according to claim 4.

19. A moving object comprising:

the electronic device according to claim 5.

20. A moving object comprising:

the electronic device according to claim 6.