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CN-121994201-A - Multimode variable frequency gyro

CN121994201ACN 121994201 ACN121994201 ACN 121994201ACN-121994201-A

Abstract

The invention relates to the technical field of gyroscopes and discloses a multi-mode variable-frequency gyroscope, which comprises a frequency modulation polar plate group, a first change-over switch and a second change-over switch, wherein the frequency modulation polar plate group is arranged on a driving frame and/or a detecting frame and comprises an electrostatic force polar plate capable of being electrified selectively, the first change-over switch is configured to change the polarity of a first driving comb tooth and a second driving comb tooth so that the two driving frames can be switched between two driving modes of same-direction movement and opposite-direction movement, and the second change-over switch is configured to change the polarity of the first detecting comb tooth and the second detecting comb tooth of a detecting electrode on the detecting frame. According to the multi-mode frequency conversion gyroscope, the first change-over switch can enable the two driving frames to move in the same direction or in opposite directions, so that the working frequency of the multi-mode frequency conversion gyroscope is changed for the first time, the second change-over switch changes the polarity of one detection electrode, the detection of the angular velocity in the third direction is achieved, meanwhile, the driving frequency and/or the detection frequency can be changed again through the frequency modulation polar plate group, and the working frequency of the gyroscope is changed again.

Inventors

  • DONG ZIQIANG
  • LIU YIBING
  • Qu Zitong
  • GAO JIE
  • CUI YAN

Assignees

  • 成都博纳神梭科技发展有限公司

Dates

Publication Date
20260508
Application Date
20251231

Claims (11)

  1. 1. The utility model provides a multimode variable frequency top, includes two drive frames, two detection frames, two drive electrodes and two detection electrodes, two drive frames and two detection frames one-to-one, two the drive frame sets up along first direction, two the detection frame sets up along first direction between two the drive frames, every all be equipped with one on the drive frame drive electrode, every all be equipped with one on the detection frame detect the electrode, drive electrode is configured to can drive corresponding drive frame moves along the second direction, every drive electrode all includes first drive broach and second drive broach, every detection electrode all includes first detection broach and second detection broach, its characterized in that, multimode variable frequency top still includes: The frequency modulation polar plate group is arranged on the driving frame and/or the detection frame and comprises an electrostatic force polar plate, and the electrostatic force polar plate is selectively electrified to change electrostatic resistance between the electrostatic force polar plate and the driving frame and/or the detection frame, so that the driving frequency of the multi-mode variable frequency gyroscope in the driving direction and/or the detection frequency in the detection direction are changed; The first change-over switch is configured to change the polarities of the first driving comb teeth and the second driving comb teeth of the driving electrodes on one driving frame so as to change the driving direction of the driving frame and the detection direction of the detection frame corresponding to the driving frame, so that the two driving frames are switched between two driving modes of the same-direction driving motion and the opposite-direction driving motion, and simultaneously, when the angular speed in the third direction is detected, the two detection frames are switched between two detection modes of the same-direction detection motion and the opposite-direction detection motion; And a second transfer switch configured to be capable of switching polarities of the first detection comb teeth and the second detection comb teeth of the detection electrodes on one of the detection frames.
  2. 2. The multi-mode variable frequency gyroscope of claim 1, wherein the number of the frequency modulation polar plate groups is at least two and is divided into: The frequency modulation driving polar plate group is arranged on the driving frame, the electrostatic force polar plate is an electrostatic force driving polar plate, and the electrostatic force driving polar plate is selectively electrified to change the driving electrostatic resistance between the electrostatic force driving polar plate and the driving frame, so that the driving frequency of the multi-mode variable frequency gyroscope in the driving direction is changed; The frequency modulation detection polar plate group is arranged on the detection frame, the electrostatic force polar plate is an electrostatic force detection polar plate, and the electrostatic force detection polar plate is selectively electrified to change the detection electrostatic resistance between the electrostatic force detection polar plate and the detection frame, so that the detection frequency of the multi-mode variable frequency gyroscope in the detection direction is changed.
  3. 3. The multi-mode variable frequency gyro according to claim 2, wherein the detected electrostatic resistance is changed with a change in the driving electrostatic resistance so that a difference between the driving frequency and the detected frequency is a set frequency.
  4. 4. The multi-mode translational gyroscope of claim 1, wherein the two drive electrodes are a drive first electrode and a drive second electrode, respectively, the multi-mode translational gyroscope further comprising in parallel: The first driving connection circuit is connected with the positive electrode port of the feedback circuit and is provided with the first driving comb teeth for driving the first electrode; the second driving connection circuit is provided with the second driving comb teeth for driving the second electrode; the third driving connection circuit is connected with the negative electrode port of the feedback circuit and is provided with the second driving comb teeth for driving the first electrode; A fourth drive connection circuit on which the first drive comb teeth for driving the second electrode are provided; The first transfer switch is configured to selectively connect the second drive connection circuit to one of the feedback circuit positive port and the feedback circuit negative port, and is further configured to connect the fourth drive connection circuit to the other of the feedback circuit positive port and the feedback circuit negative port.
  5. 5. The multi-mode variable frequency gyro according to claim 4, further comprising a fifth drive connection circuit and a sixth drive connection circuit, wherein one end of the fifth drive connection circuit is connected to the positive port of the feedback circuit, one end of the sixth drive connection circuit is connected to the negative port of the feedback circuit, the first transfer switch comprises four movable contacts, two of the movable contacts are electrically connected, the other two of the movable contacts are electrically connected, and the second drive connection circuit, the fourth drive connection circuit, the fifth drive connection circuit and the sixth drive connection circuit are respectively connected to the four movable contacts in one-to-one correspondence; When the fourth drive connection circuit is communicated with the fifth drive connection circuit through two movable contacts, the first drive comb teeth of the drive second electrode are communicated with the positive electrode port of the feedback circuit; when the second drive connection circuit is communicated with the sixth drive connection circuit through two movable contacts, the second drive comb teeth of the drive second electrode are communicated with the negative electrode port of the feedback circuit, and the two drive frames move in the same direction; when the fourth drive connection circuit is communicated with the sixth drive connection circuit through two movable contacts, the first drive comb teeth of the drive second electrode are communicated with the negative electrode port of the feedback circuit; when the second driving connection circuit is communicated with the fifth driving connection circuit through two movable contacts, the second driving comb teeth for driving the second electrode are communicated with the positive electrode port of the feedback circuit, and the two driving frames move in the reverse direction.
  6. 6. The multi-mode translational gyroscope of claim 1, wherein the two detection electrodes are a detection first electrode and a detection second electrode, respectively, the multi-mode translational gyroscope further comprising in parallel: the first detection connection circuit is connected with the first positive electrode interface end, and the first detection comb teeth for detecting the first electrode are arranged on the first detection connection circuit; the second detection connection circuit is provided with the second detection comb teeth for detecting the second electrode; the third detection connection circuit is connected with the first negative electrode interface end, and is provided with the second detection comb teeth for detecting the first electrode; A fourth detection connection circuit on which the first detection comb teeth of the detection second electrode are arranged; The second transfer switch is configured to selectively connect the second detection connection circuit to one of the first positive interface terminal and the first negative interface terminal, and is further configured to connect the fourth detection connection circuit to the other of the first positive interface terminal and the first negative interface terminal.
  7. 7. The multi-mode frequency conversion gyroscope of claim 6, further comprising a fifth detection connection circuit and a sixth detection connection circuit, wherein one end of the fifth detection connection circuit is connected with the first positive interface end, one end of the sixth detection connection circuit is connected with the first negative interface end, the second change-over switch comprises four second electrical connection contacts, two of the second electrical connection contacts are electrically connected, two other of the second electrical connection contacts are electrically connected, and the second detection connection circuit, the fourth detection connection circuit, the fifth detection connection circuit and the sixth detection connection circuit are respectively connected with the four second electrical connection contacts in a one-to-one correspondence; When the two detection frames move in the same direction, the fourth detection connecting circuit is communicated with the fifth detection connecting circuit through the two second electric connection contacts, the first detection comb teeth of the detection second electrode are communicated with the first positive electrode interface end, and when the second detection connecting circuit is communicated with the sixth detection connecting circuit through the two second electric connection contacts, the second detection comb teeth of the detection second electrode are communicated with the first negative electrode interface end; When the two detection frames move along reverse detection, the fourth detection connecting circuit is communicated with the sixth detection connecting circuit through the two second electric connection contacts, the first detection comb teeth of the second detection electrode are communicated with the first negative electrode interface end, and when the second detection connecting circuit is communicated with the fifth detection connecting circuit through the two second electric connection contacts, the second detection comb teeth of the second detection electrode are communicated with the first positive electrode interface end.
  8. 8. The multi-mode translational top of claim 1, further comprising a third transfer switch and two drive read electrodes, the two drive read electrodes corresponding to the two drive frames, respectively, each drive read electrode comprising a first drive read comb and a second drive read comb, the third transfer switch configured to be capable of reversing the polarity of the first drive read comb and the second drive read comb of the drive read electrode on the drive frame with a change in drive direction.
  9. 9. The multi-mode translational gyroscope of claim 8, wherein the two drive read electrodes are a drive read first electrode and a drive read second electrode, respectively, the multi-mode translational gyroscope further comprising in parallel: the first drive reading connection circuit is connected with the second positive electrode interface end, and the first drive reading comb teeth of the drive reading first electrode are arranged on the first drive reading connection circuit; the second drive reading connection circuit is provided with the second drive reading comb teeth of the drive reading second electrode; The third drive reading connection circuit is connected with the second negative electrode interface end, and the second drive reading comb teeth of the drive reading first electrode are arranged on the third drive reading connection circuit; a fourth drive-read connection circuit on which the first drive-read comb teeth of the drive-read second electrode are provided; The third transfer switch is configured to selectively connect the second drive read connection circuit to one of the second positive interface terminal and the second negative interface terminal, and is further configured to connect the fourth drive read connection circuit to the other of the second positive interface terminal and the second negative interface terminal.
  10. 10. The multi-mode variable frequency gyro according to claim 9, further comprising a fifth drive read connection circuit and a sixth drive read connection circuit, wherein one end of the fifth drive read connection circuit is connected to the second positive interface end, one end of the sixth drive read connection circuit is connected to the second negative interface end, the third transfer switch comprises four third electrical connection contacts, two of the third electrical connection contacts are electrically connected, two other of the third electrical connection contacts are electrically connected, and the second drive read connection circuit, the fourth drive read connection circuit, the fifth drive read connection circuit and the sixth drive read connection circuit are respectively connected to the four third electrical connection contacts in a one-to-one correspondence; When the two driving frames move along the same direction in a driving way, the fourth driving and reading connecting circuit is communicated with the fifth driving and reading connecting circuit through the two third electric connecting contacts, and the first driving and reading comb teeth of the driving and reading second electrode are communicated with the second positive electrode interface end; when the second drive reading connecting circuit is communicated with the sixth drive reading connecting circuit through the two third electric connecting contacts, the second drive reading comb teeth of the drive reading second electrode are communicated with the second negative electrode interface end; When the two driving frames move along reverse driving, the fourth driving reading connecting circuit is communicated with the sixth driving reading connecting circuit through the two third electric connecting contacts, the first driving reading comb teeth of the driving reading second electrode are communicated with the second negative electrode interface end, and when the second driving reading connecting circuit is communicated with the fifth driving reading connecting circuit through the two third electric connecting contacts, the second driving reading comb teeth of the driving reading second electrode are communicated with the second positive electrode interface end.
  11. 11. The multi-modal, variable frequency gyro of claim 1, further comprising: The two fixed anchor points are arranged on the substrate along the second direction; the two connecting frames are distributed along the second direction, and the two detecting frames are positioned between the two connecting frames; The two elastic beams correspond to the two connecting frames and the two fixed anchor points respectively, one end of each elastic beam is connected with the connecting frame, and the other end of each elastic beam is connected with the fixed anchor point; the driving beam can deform along the second direction, and two ends of the driving beam are respectively connected with the driving frame and the connecting frame; the driving detection beam can deform along the first direction and the second direction, and two ends of the driving detection beam are respectively connected with the connecting frame and the detection frame; and the detection beam can deform along the first direction, and the two ends of the detection beam are respectively connected with the detection frame and the driving frame.

Description

Multimode variable frequency gyro Technical Field The invention relates to the technical field of gyroscopes, in particular to a multi-mode variable-frequency gyroscope. Background With the development of micro-nano manufacturing and optical technology, gyroscopes have made significant progress in terms of precision, size, power consumption, and the like. However, in application scenarios involving high security requirements, especially in the face of complex electromagnetic environments or active attack threats, existing gyroscope technologies still present serious security risks. Its core mechanism typically relies on one or more fixed resonant frequencies, resulting in a device that produces stable and predictable physical or optical response characteristics during operation, forming an identification similar to a "static fingerprint". The inherent characteristics are easy to detect and identify in a frequency domain or a time domain, so that an attacker can implement targeted resonance type interference, and the performance failure or abnormal output of the gyroscope can be caused by only extremely small energy. Therefore, the existing gyroscopes based on fixed frequency work are difficult to meet the active safety protection requirement of high-value systems in strong countermeasure environments. In order to fundamentally improve the anti-interference and anti-attack capabilities of the gyroscope and expand the application of the gyroscope in security sensitive fields such as national defense, key infrastructure, high-end industrial control and the like, the limitation of the traditional fixed-frequency working mode is broken through, the static characteristic which can be detected and utilized is eliminated from a signal source, and a dynamic and non-stable frequency working mechanism is realized. Disclosure of Invention Based on the above, the invention aims to provide a multi-mode variable frequency gyroscope, which solves the problem of fixed resonant frequency of the existing gyroscope, has various working frequencies and greatly improves the safety performance. In order to achieve the above purpose, the invention adopts the following technical scheme: The utility model provides a multimode variable frequency top, includes two drive frames, two detection frames, two drive electrodes and two detection electrodes, two drive frames and two detection frames one-to-one, two the drive frames sets up along first direction, two the detection frames set up along first direction between two the drive frames, every all be equipped with one on the drive frame drive electrode, every all be equipped with one on the detection frame detect the electrode, drive electrode is configured to can drive corresponding drive frame moves along the second direction, every drive electrode all includes first drive broach and second drive broach, every detection electrode all includes first detection broach and second detection broach, multimode variable frequency top still includes: The frequency modulation polar plate group is arranged on the driving frame and/or the detection frame and comprises an electrostatic force polar plate, and the electrostatic force polar plate is selectively electrified to change electrostatic resistance between the electrostatic force polar plate and the driving frame and/or the detection frame, so that the driving frequency of the multi-mode variable frequency gyroscope in the driving direction and/or the detection frequency in the detection direction are changed; The first change-over switch is configured to change the polarities of the first driving comb teeth and the second driving comb teeth of the driving electrodes on one driving frame so as to change the driving direction of the driving frame and the detection direction of the detection frame corresponding to the driving frame, so that the two driving frames are switched between two driving modes of the same-direction driving motion and the opposite-direction driving motion, and simultaneously, when the angular speed in the third direction is detected, the two detection frames are switched between two detection modes of the same-direction detection motion and the opposite-direction detection motion; And a second transfer switch configured to be capable of switching polarities of the first detection comb teeth and the second detection comb teeth of the detection electrode on the detection frame that detects a change in direction. As a preferable scheme of the multi-mode frequency conversion gyroscope, the number of the frequency modulation polar plate groups is at least two and is divided into: The frequency modulation driving polar plate group is arranged on the driving frame, the electrostatic force polar plate is an electrostatic force driving polar plate, and the electrostatic force driving polar plate is selectively electrified to change the driving electrostatic resistance between the electrostatic force driving polar plate and the d