CN113640544B - Moving-coil switchable accelerometer and switching method of logic gate switch thereof - Google Patents
Moving-coil switchable accelerometer and switching method of logic gate switch thereof Download PDFInfo
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- CN113640544B CN113640544B CN202110789461.1A CN202110789461A CN113640544B CN 113640544 B CN113640544 B CN 113640544B CN 202110789461 A CN202110789461 A CN 202110789461A CN 113640544 B CN113640544 B CN 113640544B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/0802—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/125—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by capacitive pick-up
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/13—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by measuring the force required to restore a proofmass subjected to inertial forces to a null position
- G01P15/132—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by measuring the force required to restore a proofmass subjected to inertial forces to a null position with electromagnetic counterbalancing means
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- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The invention relates to a moving coil switchable accelerometer and a switching method of a logic gate switch thereof. The accelerometer aims to solve the problems that when the existing accelerometer encounters severe working conditions, high-frequency oscillation coupled to a swinging piece often causes the failure of a moving coil assembly, and then the function of the accelerometer is lost. According to the moving coil switchable accelerometer provided by the invention, the non-enamel insulated wire A 'binding post and the non-enamel insulated wire B' binding post are simultaneously arranged on the upper yoke or the lower yoke, and the non-enamel insulated wire A 'and the non-enamel insulated wire B' on the front side and the back side of the swinging piece are respectively connected with corresponding gold-plated areas through metal wires, so that the non-enamel insulated wire A 'and the non-enamel insulated wire B' are led out, and a logic gate switch is connected between the led-out non-enamel insulated wire A 'and the non-enamel insulated wire B' in series. According to the method, when the logic gate main switch is disconnected abnormally, the coil of the upper moving coil or the coil of the lower moving coil assembly can be intelligently switched to serve as a working coil.
Description
Technical Field
The invention relates to an accelerometer, in particular to a moving coil switchable accelerometer and a switching method of a logic gate switch thereof.
Background
The quartz accelerometer in the existing accelerometer is an inertial navigation device for measuring acceleration by utilizing Newton's second law (law of inertia), is widely applied to navigation systems of aircrafts and the like, is one of core components of the navigation systems, and is an accelerometer for detecting acceleration by utilizing the principle of differential capacitance. The specific detection process comprises the following steps: the accelerometer senses input acceleration by detecting mass, and when acceleration load exists in the direction of the input shaft of the accelerometer, the detecting mass deviates from a balance position under the action of inertia force and swings around a flexible pivot. The differential capacitance sensor composed of the upper yoke, the lower yoke and the swinging piece of the accelerometer outputs differential capacitance, the differential capacitance of the upper yoke and the lower yoke is converted into a certain amount of current through the differential capacitance detector which is connected with the servo circuit through a non-enamel insulated wire, and then the current is amplified through integration to become balance current which is output to a torquer coil (namely a moving coil assembly which is adhered to the front side and the back side of the swinging piece), and the electromagnetic force generated when the balance current flows through the coil forms balance moment which is equal to the value of the inertia moment and has opposite directions, and the balance current and the acceleration are in a proportional relation.
The existing quartz accelerometer mainly comprises an upper torquer, a lower torquer and a quartz swinging piece, and the sensitive parts of the quartz accelerometer are shown in fig. 1 and comprise an upper yoke 020 lower end face (ground), a swinging piece 01 front face (positive capacitance pole plate), a swinging piece 01 back face (negative capacitance pole plate) and a lower yoke 030 upper end face (ground) of the lower torquer. The lower end surface (ground) of the upper yoke 020 and the front surface (positive of the capacitor plate) of the swinging plate 01 form C < + >, and the upper end surface (ground) of the lower yoke 030 and the back surface (negative of the capacitor plate) of the swinging plate 01 form C < + >. The movable coil assemblies are adhered to the front and back surfaces of the swinging piece 01 to form a swinging piece 01 with sensitive mass, the swinging piece 01 with sensitive mass changes along with acceleration, gaps between the swinging piece 01 and the upper yoke 020 and gaps between the swinging piece 01 and the lower yoke 030 change, capacitance difference changes (delta C= (C+) - (C-)), capacitance signals are converted into currents through a servo circuit, and the magnitude of the currents reflects the magnitude of the acceleration.
The specific structure of the accelerometer, as shown in fig. 2 to 8, comprises an upper torquer, a lower torquer and a swinging piece 01, wherein the upper torquer comprises an upper yoke 020 and an upper moving coil assembly 021, and a torquer low-end terminal 022, a torquer Gao Duanjie terminal 023, a sensor positive-end terminal 024, a sensor negative-end terminal 025 and a ground terminal 026 which are arranged on the upper yoke 020; the lower torquer comprises a lower yoke 030 and a lower moving coil assembly 031; the swinging piece 01 comprises a center piece, an outer ring piece and a swinging beam, wherein the outer ring piece is arranged concentrically with the center piece; the upper moving coil assembly 021 and the lower moving coil assembly 031 are respectively arranged at the upper surface and the lower surface of the center piece, the upper moving coil assembly 021 leads out a non-enamel insulated wire A and a non-enamel insulated wire A 'from a welding window of a moving coil framework, and the lower moving coil assembly 031 leads out a non-enamel insulated wire B and a non-enamel insulated wire B' from a welding window of the moving coil framework; the non-enamel insulated wire A is welded on the gold-plated area on the upper surface of the swinging plate 01 and then led out through a metal wire to be connected with a line post 023 of the torquer Gao Duanjie, the non-enamel insulated wire B is welded on the gold-plated area on the lower surface of the swinging plate 01 and is conducted with the gold-plated area on the upper surface of the swinging plate 01 through the gold-plated area on the inner side wall of the outer ring plate, and then led out through the metal wire to be connected with a line post 022 at the low end of the torquer, and the non-enamel insulated wire A 'and the non-enamel insulated wire B' are respectively welded on the gold-plated areas on the upper surface and the lower surface of the swinging plate 01; the ground wire binding post 026 is directly welded on the lower yoke 030; the positive terminal 024 of the sensor is connected with a gold-plated area on the upper surface of the swinging plate 01 through a metal wire, the negative terminal 025 of the sensor is connected with another gold-plated area on the upper surface of the swinging plate 01 through a metal wire, and the gold-plated area is connected with a corresponding gold-plated area on the lower surface of the swinging plate 01 through a gold-plated area on the inner side wall of the outer ring plate; the non-enamel insulated wire A 'and the non-enamel insulated wire B' are respectively welded on the gold-plated areas of the upper surface and the lower surface of the swinging piece 01, and are conducted through plating metal films on the side surfaces of the swinging piece 01, so that the upper moving coil assembly and the lower moving coil assembly are connected in series. However, since the pendulous reed 01 can generate high-frequency oscillation at a frequency above 500KHz, when a severe working condition is encountered in practical application, the high-frequency oscillation coupled to the pendulous reed 01 greatly tests the reliability of the welding of the upper moving coil assembly and the lower moving coil assembly, and the moving coil assembly is often failed, so that the accelerometer is lost in function.
Disclosure of Invention
The invention aims to solve the technical problem that when an existing accelerometer encounters severe working conditions, high-frequency oscillation coupled to a swinging piece often causes the failure of a moving coil assembly, so that the function of the accelerometer is lost, and provides a switching method of a logic gate change-over switch of the moving coil switchable accelerometer.
In order to solve the technical problems, the technical solution provided by the invention is as follows:
the movable coil switchable accelerometer comprises an upper torquer, a lower torquer and a swinging piece, wherein the upper torquer comprises an upper yoke and an upper movable coil assembly; the lower torquer comprises a lower yoke and a lower moving coil assembly, and a torquer low-end terminal and a torquer Gao Duanjie terminal which are arranged on the lower yoke; the upper moving coil assembly leads out an enamel-free wire A and an enamel-free wire A 'from a welding window of a moving coil framework of the upper moving coil assembly, and the lower moving coil assembly leads out an enamel-free wire B and an enamel-free wire B' from a welding window of the moving coil framework of the lower moving coil assembly; the non-enamel insulated wire A is welded on the corresponding gold-plated area on the upper surface of the swinging piece, and then is led out through a metal wire to be connected with the Gao Duanjie wire column of the torquer, the non-enamel insulated wire B is welded on the corresponding gold-plated area on the lower surface of the swinging piece, and is led out through the metal wire to be connected with the low-end wire column of the torquer after being conducted with the corresponding gold-plated area on the upper surface of the swinging piece through the gold-plated area on the inner side wall of the outer ring piece of the swinging piece, and the non-enamel insulated wire A 'and the non-enamel insulated wire B' are respectively welded on the corresponding gold-plated areas on the upper surface and the lower surface of the swinging piece;
the special feature is that:
the non-enamel insulated wire A 'binding post and the non-enamel insulated wire B' binding post are arranged on the upper yoke or the lower yoke at the same time;
the corresponding gold-plated area of the non-enamel insulated wire A 'is connected with the binding post of the non-enamel insulated wire A' through a metal wire;
the corresponding gold-plated area of the non-enamel insulated wire B 'is connected with the binding post of the non-enamel insulated wire B' through a metal wire;
the two ends of the logic gate change-over switch are respectively connected with the binding post of the non-enamel insulated wire A 'and the binding post of the non-enamel insulated wire B';
the logic gate change-over switch comprises a logic gate master switch, a logic gate first switch and a logic gate second switch;
one end of the logic gate master switch is connected with the binding post of the non-enamel insulated wire A ', and the other end is connected with the binding post of the non-enamel insulated wire B';
one end of the first switch of the logic gate is connected with a Gao Duanjie wire post of the torque converter, and the other end of the first switch of the logic gate is connected with a B' wire post of the enamel-free wire;
one end of the second switch of the logic gate is connected with the binding post of the enamel-free wire A', and the other end is connected with the low-end binding post of the torquer.
Further, the binding post of the non-enamel insulated wire A 'and the binding post of the non-enamel insulated wire B' are mutually staggered in a longitudinal and transverse mode.
Further, the metal wire is a gold wire.
Meanwhile, the invention also provides a switching method of the logic gate switch in the moving coil switchable accelerometer, which is characterized by comprising the following steps:
1) When the movable coil switchable accelerometer is electrified and the logic gate switch is in a normal state, the logic gate main switch is in a closed state, and the logic gate first switch and the logic gate second switch are both in an open state;
2) Judging whether the output of the movable coil switchable accelerometer is normal, if so, executing the step 3); if not, the main switch of the logic gate is disconnected, the second switch of the logic gate is closed, then whether the output of the movable coil switchable accelerometer is normal or not is continuously judged, and if yes, the step 3) is executed; if not, opening a second switch of the logic gate, closing a first switch of the logic gate, and then executing the step 3);
3) The moving coil switchable accelerometer begins to work normally.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the movable coil switchable accelerometer provided by the invention, for the non-enamel insulated wire A 'and the non-enamel insulated wire B' which are respectively connected to the front side and the back side of the swinging piece, after the coil of the upper movable coil assembly and the coil of the lower movable coil assembly are opened because of abnormal disconnection of the logic gate master switch, the coil of the upper movable coil assembly or the coil of the lower movable coil assembly can be used as a working coil to switch the upper moment device and the lower moment device of the accelerometer by intelligently switching the coil of the upper movable coil assembly or the coil of the lower movable coil assembly, and the corresponding gold-plated areas of the non-enamel insulated wire A 'and the non-enamel insulated wire B' are respectively connected through metal wires, so that the non-enamel insulated wire A 'and the non-enamel insulated wire B' are led out, and a logic gate switch is connected between the lead-out wires of the non-enamel insulated wire A 'and the non-enamel insulated wire B', thereby improving the reliability of the accelerometer. The upper moving coil component and the lower moving coil component of the accelerometer are separated in electrical performance by serially connecting a logic gate change-over switch between an enamel-free wire A 'of the upper moving coil component and an enamel-free wire B' of the lower moving coil component, so that the modularization processing of the upper moving coil component and the lower moving coil component is realized.
2. According to the moving coil switchable accelerometer and the switching method of the logic gate switch thereof, when the logic gate switch is in the off state, the non-enamel insulated wire A 'of the upper moving coil assembly and the non-enamel insulated wire B' of the lower moving coil assembly are connected together, so that the series connection of coils of the upper moving coil assembly and the lower moving coil assembly is realized, and the functions of the upper moving coil assembly and the lower moving coil assembly are consistent with those of the conventional accelerometer; when the logic gate change-over switch is in an on state, the upper coil and the lower coil are separated from each other, and the non-enamel insulated wire A 'of the upper moving coil assembly and the non-enamel insulated wire B' of the lower moving coil assembly are respectively connected with the high end and the low end of the torquer through the logic gate change-over switch.
3. According to the movable coil switchable accelerometer provided by the invention, on the premise of being convenient to weld, the non-enamel insulated wire A 'binding post and the non-enamel insulated wire B' binding post which are simultaneously arranged on the upper yoke or the lower yoke are arranged in a staggered manner, so that contact between metal wires led out by the non-enamel insulated wire A 'binding post and the non-enamel insulated wire B' respectively is avoided.
Drawings
FIG. 1 is a schematic diagram of a conventional quartz accelerometer sensing component;
FIG. 2 is a schematic diagram of the structure of an upper yoke of a conventional quartz accelerometer;
FIG. 3 is a schematic diagram of a wobble plate in a conventional quartz accelerometer;
FIG. 4 is a schematic diagram of the structure of upper and lower moving coil assemblies in a conventional quartz accelerometer;
FIG. 5 is a schematic diagram of a non-enamel insulated wire connection of upper and lower moving coil assemblies in a conventional quartz accelerometer;
FIG. 6 is a schematic electrical diagram of the upper surface of a wobble plate in a conventional quartz accelerometer;
FIG. 7 is a schematic electrical diagram of the lower surface of a wobble plate in a conventional quartz accelerometer;
FIG. 8 is a schematic diagram of a conventional quartz accelerometer;
FIG. 9 is a schematic diagram of the structure of the lower yoke of the moving coil switchable accelerometer of the present invention;
FIG. 10 is a schematic diagram of a wobble plate in a moving coil switchable accelerometer of the present invention, wherein the schematic diagram also shows the positions of metallic films on the side surfaces of the wobble plate, which are plated with metallic films on the side surfaces of the wobble plate, of non-enamel wire A ' binding posts, non-enamel wire B ' binding posts are connected with a metallic wire a led out of the non-enamel wire A, the non-enamel wire B ' binding posts are connected with a metallic wire B led out of the non-enamel wire B, and the circled area c corresponds to the positions of the metallic films on the side surfaces of the wobble plate, which are plated with no metallic film for conduction in the prior art;
FIG. 11 is a schematic diagram of the structure of the coil of the upper and lower moving coil assemblies in the switch-on (series connection) of the moving coil switchable accelerometer of the present invention;
FIG. 12 is a schematic diagram of the structure of the coil of the upper and lower moving coil assemblies in the moving coil switchable accelerometer of the present invention when the switch is open (open);
FIG. 13 is a schematic diagram of the connection between the coils of the upper and lower moving coil assemblies and the logic gate switch in the movable coil switchable accelerometer of the present invention, e represents the high end of the torquer and f represents the low end of the torquer;
FIG. 14 is a schematic diagram of the structure of the back surface (lower surface) of the lower yoke and the logic gate switch in the moving coil switchable accelerometer of the present invention;
FIG. 15 is a schematic diagram of a moving coil switchable accelerometer according to the present invention;
FIG. 16 is a flow chart of a method for switching a logic gate switch in a moving coil switchable accelerometer according to the present invention, wherein switch 1 is a first switch of the logic gate and switch 2 is a second switch of the logic gate;
reference numerals illustrate:
fig. 2 to 8 (prior art):
01-swinging piece, 020-upper yoke, 021-upper moving coil component, 030-lower yoke, 031-lower moving coil component, 022-torquer low-end terminal, 023-torquer Gao Duanjie terminal, 024-sensor positive-end terminal, 025-sensor negative-end terminal and 026-ground terminal;
fig. 9 to 15 (invention):
1-swinging piece, 20-upper yoke, 21-upper moving coil assembly, 30-lower yoke, 31-lower moving coil assembly, 32-torquer low-end terminal, 33-torquer Gao Duanjie terminal, 34-sensor positive-end terminal, 35-sensor negative terminal, 4-non-enamel insulated wire A 'terminal, 5-non-enamel insulated wire B' terminal, 6-logic gate switch, 61-logic gate main switch, 62-logic gate first switch and 63-logic gate second switch.
Detailed Description
The invention is further described below with reference to the drawings and examples.
The movable coil switchable accelerometer comprises an upper torquer, a lower torquer, a swinging piece 1, a non-enamel insulated wire A 'binding post 4, a non-enamel insulated wire B' binding post 5 and a logic gate switch 6 as shown in fig. 9 to 15. Wherein the upper torquer comprises an upper yoke 20 and an upper moving coil assembly 21; the lower torquer comprises a lower yoke 30 and a lower moving coil assembly 31, and a torquer low-end wiring column 32, a torquer Gao Duanjie wiring column 33, a sensor positive-end wiring column 34, a sensor negative-end wiring column 35 and a ground wiring column which are arranged on the lower yoke 30; the swinging piece 1 comprises a center piece, an outer ring piece concentrically arranged with the center piece and a swinging beam connecting the center piece and the outer ring piece; the upper moving coil assembly 21 and the lower moving coil assembly 31 are respectively arranged at the upper surface and the lower surface of the center piece, the upper moving coil assembly 21 leads out an enamel-free wire A and an enamel-free wire A 'from the welding window of the moving coil framework, and the lower moving coil assembly 31 leads out an enamel-free wire B and an enamel-free wire B' from the welding window of the moving coil framework.
The non-enamel insulated wire A is welded on the corresponding gold-plated area on the upper surface of the swinging plate 1, and then is led out through a metal wire to be connected with the line post 33 of the torquer Gao Duanjie, the non-enamel insulated wire B is welded on the corresponding gold-plated area on the lower surface of the swinging plate 1, is conducted with the corresponding gold-plated area on the upper surface of the swinging plate 1 through the gold-plated area on the inner side wall of the outer ring plate, and then is led out through a metal wire to be connected with the line post 32 at the low end of the torquer, and the non-enamel insulated wire A 'and the non-enamel insulated wire B' are respectively welded on the corresponding gold-plated areas on the upper surface and the lower surface of the swinging plate 1; the ground wire binding post is directly welded on the lower yoke 30; the positive terminal wiring post 34 of the sensor is connected with a gold-plated area on the upper surface of the swinging plate 1 through a metal wire, the negative terminal wiring post 35 of the sensor is connected with another gold-plated area on the upper surface of the swinging plate 1 through a metal wire, and the gold-plated area is connected with a corresponding gold-plated area on the lower surface of the swinging plate 1 through a gold-plated area on the inner side wall of the outer ring plate; the non-enamel insulated wire A 'binding post 4 and the non-enamel insulated wire B' binding post 5 are simultaneously arranged on the lower yoke 30 (or the upper yoke 20); the corresponding gold-plated area of the non-enamel insulated wire A 'is connected with the binding post 4 of the non-enamel insulated wire A' through a metal wire; the corresponding gold-plated area of the non-enamel insulated wire B 'is connected with the binding post 5 of the non-enamel insulated wire B' through a metal wire. On the premise of convenient welding, the non-enamel insulated wire A 'binding post 4 and the non-enamel insulated wire B' binding post 5 which are arranged on the lower yoke 30 are staggered vertically and horizontally, so that the mutual contact between metal wires led out of the non-enamel insulated wire A '4 and the non-enamel insulated wire B' respectively is avoided, and all the metal wires adopt metal wires.
The logic gate change-over switch 6 is connected between the non-enamel insulated wire A 'binding post 4 and the non-enamel insulated wire B' binding post 5; the logic gate change-over switch 6 comprises a logic gate master switch 61, a logic gate first switch 62 and a logic gate second switch 63; one end of the logic gate master switch 61 is connected with the non-enamel insulated wire A 'binding post 4, and the other end is connected with the non-enamel insulated wire B' binding post 5; one end of the logic gate first switch 62 is connected with the terminal 33 of the moment indicator Gao Duanjie, and the other end is connected with the terminal 5 of the enamel-free wire B'; one end of the second switch 63 of the logic gate is connected with the binding post 4 of the non-enamel insulated wire A', and the other end is connected with the low-end binding post 32 of the torquer.
The switching method based on the logic gate change-over switch in the moving coil switchable accelerometer, as shown in fig. 16, comprises the following steps:
1) When the moving coil switchable accelerometer is electrified and the logic gate change-over switch 6 is in a normal state (default state), the logic gate main switch 61 is in a closed state, the logic gate first switch 62 and the logic gate second switch 63 are both in an open state, and at the moment, the coils of the upper moving coil assembly 21 and the lower moving coil assembly 31 are connected in series and are all working coils;
2) Judging whether the output of the movable coil switchable accelerometer is normal (when the output is abnormal with a maximum value or a minimum value), if so, executing the step 3); if not, the logic gate main switch 61 is opened, the logic gate second switch 63 is closed, the coil of the upper moving coil assembly 21 is a working coil at this time, then whether the output of the moving coil switchable accelerometer is normal is continuously judged, if yes, the step 3) is executed; if not, the second switch 63 of the logic gate is opened, the first switch 62 of the logic gate is closed, the coil of the lower moving coil assembly 31 is a working coil, and then the step 3) is executed;
3) The moving coil switchable accelerometer begins to work normally.
According to the accelerometer, the non-enamel insulated wire A 'and the non-enamel insulated wire B' which are respectively connected to the corresponding gold-plated areas on the front side and the back side of the swinging piece 1 are simultaneously arranged on the upper yoke 20 or the lower yoke 30, the non-enamel insulated wire A 'and the non-enamel insulated wire B' are led out after being opened through metal wires, and the logic gate switch 6 is connected in series between the led-out non-enamel insulated wire A 'and the non-enamel insulated wire B', so that after the logic gate master switch 61 is opened due to abnormal opening, the coils of the upper moving coil assembly 21 and the lower moving coil assembly 31 can be used as working coils through intelligent switching, the upper end and the lower end of a torquer are connected, the upper torquer and the lower torquer of the accelerometer are switched, and the reliability of the accelerometer is further improved. Namely, the upper moving coil assembly 31 and the lower moving coil assembly 31 of the accelerometer are separated in electrical performance by connecting a logic gate change-over switch 6 in series between the non-enamel insulated wire A 'of the upper moving coil assembly 21 and the non-enamel insulated wire B' of the lower moving coil assembly 31, so that the modularization processing of the upper moving coil assembly 31 and the lower moving coil assembly 31 is realized. When the logic gate change-over switch 6 is in an off state, the non-enamel insulated wire A 'is connected in series with the non-enamel insulated wire B' of the lower moving coil assembly 31, so that the series connection of the coils of the upper moving coil assembly 21 and the lower moving coil assembly 31 is realized, and the functions of the accelerometer are consistent with those of the existing accelerometer; when the logic gate change-over switch 6 is in an "on" state, the upper coil and the lower coil are separated from each other, and the non-enamel insulated wire A 'of the upper moving coil assembly and the non-enamel insulated wire B' of the lower moving coil assembly are respectively connected with the high end and the low end of the torquer through the logic gate change-over switch.
Finally, it should be noted that: the foregoing embodiments are merely for illustrating the technical solutions of the present invention, and not for limiting the same, and it will be apparent to those skilled in the art that modifications may be made to the specific technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, without departing from the spirit of the technical solutions protected by the present invention.
Claims (4)
1. The movable coil switchable accelerometer comprises an upper torquer, a lower torquer and a swinging piece (1), wherein the upper torquer comprises an upper yoke (20) and an upper movable coil assembly (21); the lower torquer comprises a lower yoke (30) and a lower moving coil assembly (31), and a torquer low-end terminal (32) and a torquer Gao Duanjie terminal (33) which are arranged on the lower yoke (30); the upper moving coil assembly (21) leads out an enamel-free wire A and an enamel-free wire A' from a welding window of a moving coil framework, and the lower moving coil assembly (31) leads out an enamel-free wire B and an enamel-free wire B from a welding window of the moving coil framework; the non-enamel insulated wire A is welded on a corresponding gold-plated area on the upper surface of the swinging piece (1), then is led out through a metal wire to be connected with a moment device Gao Duanjie wire column (33), the non-enamel insulated wire B is welded on a corresponding gold-plated area on the lower surface of the swinging piece (1), is conducted with a corresponding gold-plated area on the upper surface of the swinging piece (1) through a gold-plated area on the inner side wall of an outer ring piece of the swinging piece (1), and then is led out through a metal wire to be connected with a moment device low-end wire column (32), and the non-enamel insulated wire A 'and the non-enamel insulated wire B' are respectively welded on corresponding gold-plated areas on the upper surface and the lower surface of the swinging piece (1);
the method is characterized in that:
the non-enamel insulated wire A 'binding post (4) and the non-enamel insulated wire B' binding post (5) are arranged on the upper yoke (20) or the lower yoke (30) at the same time;
the corresponding gold-plated area of the non-enamel insulated wire A 'is connected with a binding post (4) of the non-enamel insulated wire A' through a metal wire;
the corresponding gold-plated area of the non-enamel insulated wire B 'is connected with a binding post (5) of the non-enamel insulated wire B' through a metal wire;
two ends of the logic gate change-over switch (6) are respectively connected with the binding post (4) of the enamel-free wire A 'and the binding post (5) of the enamel-free wire B';
the logic gate change-over switch (6) comprises a logic gate main switch (61), a logic gate first switch (62) and a logic gate second switch (63);
one end of the logic gate main switch (61) is connected with the binding post (4) of the enamel-free wire A ', and the other end is connected with the binding post (5) of the enamel-free wire B';
one end of the logic gate first switch (62) is connected with a terminal (33) of the moment booster Gao Duanjie, and the other end of the logic gate first switch is connected with a terminal (5) of the enamel-free wire B';
one end of the second switch (63) of the logic gate is connected with the binding post (4) of the non-enamel insulated wire A', and the other end is connected with the low-end binding post (32) of the torquer.
2. The moving coil switchable accelerometer of claim 1, wherein:
the binding post (4) of the non-enamel insulated wire A 'and the binding post (5) of the non-enamel insulated wire B' are mutually staggered in a longitudinal and transverse mode.
3. The moving coil switchable accelerometer of claim 1 or 2, wherein:
the metal wire is a gold wire.
4. A method of switching a logic gate switch in a moving coil switchable accelerometer as claimed in claim 1, 2 or 3, comprising the steps of:
1) the movable coil switchable accelerometer is electrified, when the logic gate change-over switch (6) is in a normal state, the logic gate main switch (61) is in a closed state, and the logic gate first switch (62) and the logic gate second switch (63) are both in an open state;
2) Judging whether the output of the movable coil switchable accelerometer is normal, if so, executing the step 3); if not, opening a logic gate main switch (61), closing a logic gate second switch (63), and then continuously judging whether the output of the movable coil switchable accelerometer is normal or not, if so, executing the step 3); if not, opening a second switch (63) of the logic gate, closing a first switch (62) of the logic gate, and then executing the step 3);
3) The moving coil switchable accelerometer begins to work normally.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890175A (en) * | 1981-11-25 | 1983-05-28 | Tokyo Keiki Co Ltd | Accelerometer |
| CN106918720A (en) * | 2017-04-10 | 2017-07-04 | 浙江大学 | A kind of filament restricted type acceleration transducer |
| CN109164273A (en) * | 2018-07-24 | 2019-01-08 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of accelerometer permanent magnet moment-meter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060059988A1 (en) * | 2004-09-23 | 2006-03-23 | Innalabs Technologies, Inc. | Magnetofluidic accelerometer with non-magnetic film on drive magnets |
| CN105759075B (en) * | 2016-02-25 | 2017-09-19 | 中国科学院地质与地球物理研究所 | A kind of high-precision flexure accelerometers |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890175A (en) * | 1981-11-25 | 1983-05-28 | Tokyo Keiki Co Ltd | Accelerometer |
| CN106918720A (en) * | 2017-04-10 | 2017-07-04 | 浙江大学 | A kind of filament restricted type acceleration transducer |
| CN109164273A (en) * | 2018-07-24 | 2019-01-08 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of accelerometer permanent magnet moment-meter |
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