Portable test box for imported gyroscope

Abstract

The invention provides a portable test box for imported gyroscopes. A power supply module, and a phase sequence detection module, a power supply indication module, a transformer assembly, a signal measurement module and a 24-core circular connector which are connected with the power supply module through a state switching module are arranged in a box body. The method can separate from other equipment of a heading system to independently test imported gyroscopes, does not need to depend on a whole machine or a heading system core assembly, can directly detect the gyroscopes, and quickly judges whether faults are derived from gyroscope parts or not; the problems that an existing imported helicopter gyroscope test depends on other equipment, fault positioning is slow, test precision is low, maintenance resources are consumed, and normal parts are possibly consumed are solved, the functions of phase sequence detection, power state indication, angle signal resolving display and skew state monitoring are achieved, fault positioning efficiency and test precision are improved, and the test cost is reduced. And the fault positioning time is greatly shortened, the maintenance resource consumption and the normal part loss risk are reduced, and the safety and continuity of the operation of the imported helicopters are guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of gyroscope testing technology, specifically relating to an imported portable gyroscope testing box. Background Technology

[0002] In the aviation field, the flight safety and reliability of helicopters depend on the stable operation of core avionics equipment. Gyroscopes, as key components for heading and attitude detection, are fundamental to precise navigation and stable control. However, imported helicopters used for training and disaster relief employ imported, proprietary gyroscopes that adhere to foreign standards. Since there are no domestically available dedicated testing kits for these gyroscopes, they cannot be tested independently and must be tested in conjunction with other equipment in the heading system. This testing method presents several problems: joint testing relies on the normal operation of other equipment; in case of a fault, the source of the fault cannot be identified, leading to slow fault location and low testing accuracy. Furthermore, it requires the use of the entire aircraft or the core heading system assembly, consuming significant maintenance resources and potentially damaging healthy components. Therefore, improvements are necessary to address these issues. Summary of the Invention

[0003] The technical problem solved by this invention is to provide a portable test box for imported gyroscopes. Designed to meet the testing needs of imported gyroscopes, the box includes an electrical module and a phase sequence detection module, a power indicator module, a transformer assembly, a signal measurement module, and a 24-pin circular connector connected to the power supply module via a state switching module. This allows for independent testing of imported gyroscopes without relying on other equipment in the heading system, eliminating dependence on the entire helicopter or the core assembly of the heading system. It allows direct testing of the gyroscope itself, quickly determining whether a fault originates from a gyroscope component. This solves the problems of existing imported helicopter gyroscope testing, which relies on other equipment, suffers from slow fault location, low testing accuracy, high maintenance costs, and potential damage to normal components. The box enables phase sequence detection, power status indication, angle signal calculation and display, and skew monitoring, improving fault location efficiency and testing accuracy, significantly shortening fault location time, reducing maintenance resource consumption and the risk of damage to normal components, and ensuring the safety and continuity of imported helicopter operation.

[0004] The technical solution adopted in this invention is as follows: an imported portable gyroscope test box, comprising a box body, wherein the box body houses a power supply module and a phase sequence detection module, a power indicator module, a transformer assembly, a signal measurement module, and a 24-pin circular connector connected to the power supply module via a state switching module. The signal output terminal of the 24-pin circular connector is connected to the input terminal of an angle signal receiving and processing module located inside the box body, and the signal input terminal of the 24-pin circular connector is connected to the gyroscope under test. The operating power input terminal of the angle signal receiving and processing module is connected to the transformer assembly, and the excitation signal input of the angle signal receiving and processing module is... The main power supply bus connected to the power supply module is connected accordingly, and the angle signal receiving and processing module calculates and displays the heading signal received by the gyroscope under test. The skew signal output port of the 24-pin circular connector is connected to the skew status display module, and the skew status of the gyroscope under test is displayed by the skew status display module. The working power supply with the required phase sequence provided by the power supply module to the gyroscope under test is detected by the phase sequence detection module under the on / off control of the state switching module. The power indicator module is used to indicate the status of the power supply module in the pre-adjustment state or the working state under the on / off switching of the state switching module.

[0005] The state switching module includes a power switching linkage switch, and the three-phase AC terminals and DC positive terminals of the power supply module are connected to the main power supply bus or the detection power supply branch through the power switching linkage switch.

[0006] Furthermore, the state switching module also includes a calibration / operation linkage switch and a phase sequence linkage switch. The transformer assembly includes transformer B1, transformer B2, and transformer B3. The output terminals of transformer B1, transformer B2, and transformer B3 are connected to the operating power input terminal of the angle signal receiving and processing module. Each input terminal of transformer B1, transformer B2, and transformer B3 is connected to the main power supply bus or detection power supply branch through the calibration / operation linkage switch, and provides the required operating power to the angle signal receiving and processing module under the on / off control of the calibration / operation linkage switch.

[0007] Furthermore, pins G and H of transformer B3 are connected to one end of capacitor C2 via a fast / slow switching switch, and pin K of transformer B3 and the other end of capacitor C2 are connected to one side of a reversing linkage switch. The other side of the reversing linkage switch is connected to the corresponding interface of a 24-pin circular connector via linkage switch S7. The 24-pin circular connector is connected to phase C of the main power supply bus via on / off control switches S3 and S4.

[0008] Furthermore, the state switching module also includes a phase sequence linkage switch. The phase sequence detection module is connected to the corresponding phase of the three-phase AC power supply bus through the phase sequence linkage switch. The phase sequence detection module includes a voltage divider resistor R6, a voltage divider resistor R9, a green LED4, and a red LED5. One end of the voltage divider resistor R6 is connected to phase C of the main power supply bus through the phase sequence linkage switch, and the other end of the voltage divider resistor R6 is simultaneously connected to the anode of the green LED4 and one end of resistor R7. One end of the voltage divider resistor R9 is connected to phase B of the main power supply bus through the phase sequence linkage switch, and the other end of the voltage divider resistor R9 is simultaneously connected to the anode of the red LED5 and one end of resistor R8. The cathode of the green LED4 and the other end of resistor R7, as well as the cathode of the red LED5 and the other end of resistor R8, are all connected to one end of capacitor C1, and the other end of capacitor C1 is connected to phase A of the main power supply bus through the phase sequence linkage switch.

[0009] Furthermore, the state switching module also includes a power indicator linkage switch S2. The power indicator module includes LED1, LED2, and LED3. The two ends of LED1 are connected in parallel with the two ends of resistor R10, the two ends of LED2 are connected in parallel with the two ends of resistor R4, and the two ends of LED3 are connected in parallel with the two ends of resistor R5, forming three parallel sub-circuits with one end connected to the common power supply terminal. The parallel sub-circuits corresponding to LED1, LED2, and LED3 are respectively connected to the main power supply bus and the detection power supply branch via series current limiting resistors R1, R2, and R3, as well as the power indicator linkage switch S2 and the corresponding terminal contacts.

[0010] Furthermore, the state switching module also includes a linkage switch S1. The signal measurement module includes AC digital voltmeters V1, V2, V3, DC digital voltmeter V+, AC digital ammeters A1, A2, A3, and A+. Pin 1 of AC digital ammeters A1, A2, A3, and A+ is connected to phase A, phase B, phase C, and the positive DC terminal of the main power supply bus, respectively. Pin 2 of AC digital ammeters A1, A2, A3, and A+ is connected to a 24-pin circular connector via the linkage switch S1. Pin 1 of the AC digital voltmeter V1 is connected to pin 2 of the AC digital voltmeter V3, pin 2 of the AC digital voltmeter V1 is connected to pin 1 of the AC digital voltmeter V2, and pin 2 of the AC digital voltmeter V2 is connected to pin 1 of the AC digital voltmeter V3. These pins are also connected to the corresponding terminals of the linkage switch S1. Pin 1 of the DC digital voltmeter V+ is connected to the corresponding terminals of the linkage switch S1. Pin 5 of the AC digital voltmeter V1, AC digital voltmeter V2, AC digital voltmeter V3, DC digital voltmeter V+, AC digital ammeter A1, AC digital ammeter A2, AC digital ammeter A3, and DC digital ammeter A+ are all connected to the DC positive terminal of the power supply module through the power indication linkage switch S2 and the power switching linkage switch.

[0011] Furthermore, the angle signal receiving and processing module includes an angle receiver and a DB15 connector. The angle receiver is connected to a 24-pin circular connector, a transformer assembly, and phases B and C of the main power supply bus via the DB15 connector.

[0012] Furthermore, pins 11 and 12 of the 24-pin circular connector are respectively connected to the positive DC terminal of the main power supply bus via wires connected to switches S5 and S6, and the other end of the skew status display module, which is connected to pin 16 of the 24-pin circular connector, is connected to the positive DC terminal of the main power supply bus via a wire connected to switch S8.

[0013] Furthermore, the tilt status display module includes a light-emitting diode (LED) 6 and resistors R14 and R15. The anode of the LED 6 is connected to the output terminal of the switch S8, and the resistor R15 connected in series with the LED 6 is connected to pin 16 of the 24-pin circular connector. The two ends of the resistor R14 are respectively connected to the output node of the switch S8 and the connection node between the LED 6 and the resistor R15.

[0014] Advantages of this invention compared to existing technologies: 1. This technical solution connects directly to the imported gyroscope under test via a 24-pin circular connector, without relying on other equipment in the heading system. It can independently complete various performance tests of the gyroscope, effectively solving the problem of difficulty in distinguishing fault sources in traditional joint testing and greatly improving fault location efficiency. 2. This technical solution integrates a phase sequence detection module, a power indicator module, an angle signal receiving and processing module, a skew status display module, and a signal measurement module. It can realize multiple functions such as phase sequence detection, power status indication, heading signal calculation and display, skew status monitoring, and AC / DC voltage and current signal measurement, fully covering the core testing requirements of imported gyroscopes. 3. This technical solution uses an angle signal receiving and processing module to calculate the gyroscope heading signal, and combines it with high-precision AC digital voltmeters and AC digital ammeters to ensure the accuracy of the test data and provide a reliable basis for gyroscope performance evaluation. 4. This technical solution adopts a modular design, and each functional module can be flexibly controlled through a state switching module, making the operation process simple; the whole adopts a portable box structure, which is easy to carry to different test sites and is suitable for gyroscope maintenance and testing in a variety of scenarios. 5. This technical solution does not require the use of the core assembly of the whole machine or heading system, reducing the occupation of maintenance resources and avoiding the damage to normal components that may be caused during joint testing, thus significantly reducing equipment maintenance costs and operational risks. Attached Figure Description

[0015] Figure 1 This is a circuit diagram of the present invention; Figure 2 This is a schematic diagram of the box structure for the invention. Detailed Implementation

[0016] The following will be based on embodiments of the present invention. Figure 1-2 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0017] It should be noted that, unless otherwise stated herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0019] Imported portable gyroscope testing box, such as Figure 1-2 As shown, the device includes a housing 1. Inside the housing 1 are a power supply module 2 and a phase sequence detection module 3, a power indicator module 4, a transformer assembly 5, a signal measurement module 8, and a 24-pin circular connector 6, all connected to the power supply module 2 via a state switching module. The signal output terminal of the 24-pin circular connector 6 is connected to the input terminal of an angle signal receiving and processing module 7 located inside the housing 1, and the signal input terminal of the 24-pin circular connector 6 is connected to the gyroscope under test. The operating power input terminal of the angle signal receiving and processing module 7 is connected to the transformer assembly 5, and the excitation signal input terminal of the angle signal receiving and processing module 7 is connected to the power supply module 2. The main power supply bus 13 is connected in a corresponding manner, and the angle signal receiving and processing module 7 calculates and displays the heading signal received by the gyroscope under test. The skew signal output port of the 24-pin circular connector 6 is connected to the skew status display module 9, and the skew status of the gyroscope under test is displayed by the skew status display module 9. The working power supply with the required phase sequence provided by the power supply module 2 to the gyroscope under test is detected by the phase sequence detection module 3 under the on / off control of the state switching module. The power indicator module 4 is used to indicate the status of the power supply module 2 in the pre-adjustment state or the working state under the on / off switching of the state switching module.

[0020] The state switching module includes a power switching linkage switch 12. The three-phase AC terminals and the positive DC terminal of the power supply module 2 are connected to the main power supply bus 13 or the detection power supply branch 14 through the power switching linkage switch 12. In the above structure, the working power required by the gyroscope under test is three-phase 36V 400Hz and DC 27V. By switching through the power switching linkage switch 12, the test box can be self-tested before the gyroscope under test is powered on. In conjunction with the calibration / operation linkage switch 10, the power-on mode and calibration mode of the test box can be switched.

[0021] like Figure 1 As shown, the specific connection of transformer assembly 5 is as follows: The state switching module also includes a calibration / operation linkage switch 10 and a phase sequence linkage switch 11. The transformer assembly 5 includes transformer B1, transformer B2 and transformer B3. The output terminals of transformer B1, transformer B2 and transformer B3 are connected to the working power input terminal of angle signal receiving and processing module 7. Each input terminal of transformer B1, transformer B2 and transformer B3 is connected to the main power supply bus 13 or the detection power supply branch 14 through the calibration / operation linkage switch 10, and provides the required working power to angle signal receiving and processing module 7 under the on / off control of calibration / operation linkage switch 10. In the above structure, transformers B1, B2, and B3 mainly provide the angle signal receiving and processing module 7 with two 18V (between G and H of transformer B1 and between G and H of transformer B2) and 9V (between E and F of transformer B3) power supplies, which are used to convert the ±15V and +5V power supplies required by the angle signal receiving and processing module 7.

[0022] Specifically, pins G and H of transformer B3 are connected to one end of capacitor C2 via fast / slow switching switch 15, and pin K of transformer B3 and the other end of capacitor C2 are connected to one side of reversing linkage switch 16. The other side of reversing linkage switch 16 is connected to the corresponding interface of 24-pin circular connector 6 via linkage switch S7. The 24-pin circular connector 6 is connected to phase C of main power supply bus 13 via on / off control switch S3 and on / off control switch S4.

[0023] In the above structure, transformer B3 provides the coordination voltage required for both fast and slow coordination to the yaw motor inside the gyroscope. The gyroscope has two working modes: fast and slow coordination. The fast / slow switching switch 15 supplies 12V (between G and K of transformer B3) or 3V (between H and K of transformer B3) to the gyroscope motor, and the forward and reverse switching is realized through the reversing linkage switch 16, thereby realizing the fast and slow coordination of the gyroscope.

[0024] The specific structure of the phase sequence detection module 3 is as follows: The state switching module further includes a phase sequence linkage switch 11. The phase sequence detection module 3 is connected to the corresponding three-phase AC phases of the main power supply bus 13 through the phase sequence linkage switch 11. The phase sequence detection module 3 includes voltage divider resistors R6 and R9, a green LED 4, and a red LED 5. One end of the voltage divider resistor R6 is connected to phase C of the main power supply bus 13 through the phase sequence linkage switch 11, and the other end of the voltage divider resistor R6 is simultaneously connected to the anode of the green LED 4 and one end of resistor R7. One end of the voltage divider resistor R9 is connected to the main power supply bus 13 through the phase sequence linkage switch 11. Phase B of bus 13 is connected, and the other end of voltage divider resistor R9 is simultaneously connected to the anode of red LED5 and one end of resistor R8. The cathode of green LED4 and the other end of resistor R7, as well as the cathode of red LED5 and the other end of resistor R8, are connected to one end of capacitor C1. The other end of capacitor C1 is connected to phase A of main power supply bus 13 through phase sequence linkage switch 11. In the above structure, phase sequence detection module 3 is used to detect whether the phase sequence of the three-phase 36V 400Hz power supply is correct. If red LED5 (error light) lights up, the wiring sequence of the three-phase 36V 400Hz power supply needs to be adjusted.

[0025] The specific structure of the power indicator module 4 is as follows: The state switching module also includes a power indicator linkage switch S2. The power indicator module 4 includes light-emitting diodes LED1, LED2, and LED3. The two ends of LED1 are connected in parallel with the two ends of resistor R10, the two ends of LED2 are connected in parallel with the two ends of resistor R4, and the two ends of LED3 are connected in parallel with the two ends of resistor R5, forming three parallel sub-circuits with one end connected to the common power terminal. The parallel sub-circuits corresponding to LED1, LED2, and LED3 are respectively connected to the main power supply bus 13 and the detection power supply branch 14 via series current-limiting resistors R1, R2, and R3, as well as the power indicator linkage switch S2 and the corresponding terminal contacts.

[0026] In the above structure, the function of the power indicator module 4 is to intuitively observe the status of the three-phase 36V 400Hz power supply connected to the device. When the power indicator linkage switch S2 is turned on, the A, B, and C phases of the three-phase 36V 400Hz power supply are connected to the power indicator module 4 through the power indicator linkage switch S2. The light-emitting diodes LED1, LED2, and LED3, together with each current-limiting resistor (resistor R10, resistor R4, and resistor R5), form a star connection to realize the power status indication.

[0027] The specific structure of the signal measurement module 8 is as follows: The state switching module further includes a linkage switch S1. The signal measurement module 8 includes AC digital voltmeter V1, AC digital voltmeter V2, AC digital voltmeter V3, DC digital voltmeter V+, AC digital ammeter A1, AC digital ammeter A2, AC digital ammeter A3, and DC digital ammeter A+. Pin 1 of AC digital ammeter A1, AC digital ammeter A2, AC digital ammeter A3, and DC digital ammeter A+ are respectively connected to phase A, phase B, phase C, and the positive DC terminal of the main power supply bus 13. Pin 2 of AC digital ammeter A1, AC digital ammeter A2, AC digital ammeter A3, and DC digital ammeter A+ are connected to the 24-pin circular connector 6 through the linkage switch S1. The pin 1 of the AC digital voltmeter V1 is connected to the pin 2 of the AC digital voltmeter V3, the pin 2 of the AC digital voltmeter V1 is connected to the pin 1 of the AC digital voltmeter V2, and the pin 2 of the AC digital voltmeter V2 is connected to the pin 1 of the AC digital voltmeter V3, and they are respectively connected to the corresponding terminals of the linkage switch S1. The pin 1 of the DC digital voltmeter V+ is also connected to the corresponding terminals of the linkage switch S1. The pins 5 of the AC digital voltmeter V1, AC digital voltmeter V2, AC digital voltmeter V3, DC digital voltmeter V+, AC digital ammeter A1, AC digital ammeter A2, AC digital ammeter A3, and DC digital ammeter A+ are all connected to the DC positive terminal of the power supply module 2 through the power indication linkage switch S2 and the power switching linkage switch 12.

[0028] In the above structure, the signal measurement module 8 consists of AC voltmeters (AC digital voltmeter V1, AC digital voltmeter V2, AC digital voltmeter V3), AC ammeters (AC digital ammeter A1, AC digital ammeter A2, AC digital ammeter A3), DC voltmeters (DC digital voltmeter V+), and DC ammeters (DC digital ammeter A+), realizing real-time measurement of AC voltage and current and DC voltage and current during the gyroscope's startup and operation processes; AC digital voltmeter V1: AC voltage measurement accuracy: ±2.5% +3 digits; AC voltage measurement range: AC199.9V; AC digital voltmeter V2: AC voltage measurement accuracy: ±2.5% +3 digits; AC voltage measurement range: AC199.9V; AC digital voltmeter V3: AC voltage measurement accuracy: ±2.5% +3 digits; AC voltage measurement range: AC199.9V; DC digital voltmeter V+: AC voltage measurement accuracy: ±1.5% +3 digits; AC voltage measurement range: ±199.9V. AC digital ammeter A1: AC current measurement accuracy: ±2.5% + 3 digits; AC voltage measurement range: AC 1.999A; AC digital ammeter A2: AC current measurement accuracy: ±2.5% + 3 digits; AC voltage measurement range: AC 1.999A; AC digital ammeter A3: AC current measurement accuracy: ±2.5% + 3 digits; AC voltage measurement range: AC 1.999A; DC digital ammeter A+: AC current measurement accuracy: ±1.5% + 3 digits; AC voltage measurement range: ±1.999A.

[0029] The angle signal receiving and processing module 7 is as follows: The angle signal receiving and processing module 7 includes an angle receiver 7-1 and a DB15 connector 7-2. The angle receiver 7-1 is connected to the 24-pin circular connector 6, the transformer assembly 5, and the B and C phases of the main power supply bus 13 through the DB15 connector 7-2.

[0030] In the above structure, the angle signal receiving and processing module 7 is used to receive the heading angle value output by the gyroscope. It can convert the three-phase self-aligning angle analog voltage into a binary angle value, and then convert it into BCD code through the decoding circuit (built into the angle receiver) to realize real-time angle display. When the angle signal receiving and processing module 7 is working, in addition to receiving the self-aligning angle analog voltage, it also requires two AC 18V (J13 / J14, J8 / J15) and one AC 9V (J6 / J7) power supplies, as well as excitation voltages (2F, 3F) that are from the same source as the gyroscope heading. The measurement accuracy of the angle signal receiving and processing module 7 is ≤±0.1°, and the measurement range is 0-359.995°.

[0031] In this configuration, pins 11 and 12 of the 24-pin circular connector 6 are connected to the positive DC terminal of the main power supply bus 13 via wires connected to switches S5 and S6, respectively. The tilt status display module 9, with one end connected to pin 16 of the 24-pin circular connector 6, is also connected to the positive DC terminal of the main power supply bus 13 via a wire connected to switch S8. In this structure, pins 11 and 12 of the 24-pin circular connector 6 are the fast-mode control terminal and the half-compass control terminal of the gyroscope, respectively. Inside the gyroscope, one end is a relay coil, and the other end of the relay coil is grounded. Pins 11 and 12 of the 24-pin circular connector 6 are connected to the positive DC terminal via switches S5 and S6. The switching on and off of switches S5 and S6 enables the conversion between fast / slow-mode and magnetic compass / half-compass states of the gyroscope.

[0032] The specific structure of the tilt status display module 9 is as follows: The tilt status display module 9 includes a light-emitting diode LED6 and resistors R14 and R15. The anode of the light-emitting diode LED6 is connected to the output terminal of switch S8, and the resistor R15 connected in series with the light-emitting diode LED6 is connected to pin 16 of the 24-pin circular connector 6. The two ends of the resistor R14 are respectively connected to the output node of switch S8 and the connection node between the light-emitting diode LED6 and resistor R15.

[0033] The skew status display module 9 is used to monitor the skew status of the gyroscope. Pin 16 of the 24-pin circular connector 6 is the skew status output terminal of the gyroscope. In order to limit the rotation angle of the inner ring of the gyroscope relative to the outer ring, a limiter is installed on the inner ring of the gyroscope. When the rotation angle of the inner ring relative to the outer ring reaches a certain value, the limiter touches the contact device on the outer ring, and the gyroscope will output a skew signal. At this time, the switch S8 is turned on, and the skew status light is lit.

[0034] Preparation before testing 1) Check that all parts of the test chamber are securely connected and free from looseness or damage; 2) Confirm whether the power supply of power supply module 2 meets the requirements and whether the three-phase 36V 400Hz and DC 27V power supply is normal; 3) Connect the gyroscope under test to the test box via the 24-pin circular connector 6, ensuring a reliable connection and no poor contact. Test chamber self-test 1) Switch to the detection power supply branch 14 via the power switching linkage switch 12 to realize the self-testing of the test box; 2) Observe the status of the LEDs in the power indicator module 4. If LED1, LED2, and LED3 are lit normally, it indicates that the power supply to the test box is connected normally. If the green LED4 in the phase sequence detection module 3 is lit, it indicates that the phase sequence of the three-phase 36V 400Hz power supply is correct. If the red LED5 is lit, the wiring sequence of the three-phase 36V 400Hz power supply needs to be adjusted. 3) Check whether each instrument in signal measurement module 8 is displaying normally. If the instrument is normal, the self-test is passed; if there is an abnormality, the fault needs to be investigated before proceeding with subsequent operations. Gyroscope test operation 1) After the self-test passes, the power switching linkage switch 12 switches to the main power supply bus 13 to provide working power to the gyroscope under test; 2) According to the test requirements, switch the power-on mode and verification mode of the test box through the calibration / operation linkage switch 10; 3) If it is necessary to switch the working mode of the gyroscope, select fast mode (12V) or slow mode (3V) through the fast / slow switch 15, and realize forward and reverse reversal through the reversing linkage switch 16; 4) To switch between fast / slow gyroscope and magnetic compass / half compass states, you can do so by turning switches S5 and S6 on and off. 5) During the startup and operation of the gyroscope, the AC voltage and current data and DC voltage and current data are observed and recorded in real time through the AC voltmeter, AC ammeter, DC voltmeter and DC ammeter of the signal measurement module 8. 6) The angle signal receiving and processing module 7 will receive the heading angle value output by the gyroscope in real time, calculate and display it, and observe and record the heading angle data; 7) During the test, pay close attention to the LED6 of the tilt status display module 9. If the LED6 lights up, it means that the gyroscope is tilted and you need to stop the machine and check it in time.

[0035] This technical solution connects directly to the imported gyroscope under test via a 24-pin circular connector, eliminating the need for other equipment in the heading system. It can independently perform various performance tests on the gyroscope, effectively solving the problem of difficulty in identifying fault sources in traditional joint testing and significantly improving fault location efficiency. It integrates a phase sequence detection module, a power indicator module, an angle signal receiving and processing module, a yaw status display module, and a signal measurement module, enabling multiple functions including phase sequence detection, power status indication, heading signal calculation and display, yaw status monitoring, and AC / DC voltage and current signal measurement, comprehensively covering the core testing requirements of imported gyroscopes. Through angle signal receiving… The processing module decodes the gyroscope heading signal and, combined with high-precision AC digital voltmeters and AC digital ammeters, ensures the accuracy of the test data, providing a reliable basis for gyroscope performance evaluation. It adopts a modular design, with each functional module flexibly controlled via a state switching module, resulting in a simple operation process. The overall portable housing structure facilitates transport to different testing sites and is suitable for gyroscope maintenance and testing in various scenarios. It eliminates the need to occupy the entire machine or the core heading system assembly, reducing maintenance resource consumption and avoiding potential damage to normal components during joint testing, significantly lowering equipment maintenance costs and operational risks.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An imported portable gyroscope testing box, characterized in that: The device includes a housing (1), which contains a power supply module (2) and a phase sequence detection module (3), a power indicator module (4), a transformer assembly (5), a signal measurement module (8), and a 24-pin circular connector (6) connected to the power supply module (2) via a state switching module. The signal output terminal of the 24-pin circular connector (6) is connected to the input terminal of an angle signal receiving and processing module (7) located inside the housing (1), and the signal input terminal of the 24-pin circular connector (6) is connected to the gyroscope under test. The operating power input terminal of the angle signal receiving and processing module (7) is connected to the transformer assembly (5), and the excitation signal input terminal of the angle signal receiving and processing module (7) is connected to the power supply module (5). The main power supply bus (13) connected to the electrical module (2) is connected in a corresponding manner, and the angle signal receiving and processing module (7) calculates and displays the heading signal of the gyroscope under test. The skew signal output port of the 24-pin circular connector (6) is connected to the skew status display module (9), and the skew status of the gyroscope under test is displayed by the skew status display module (9). The working power supply with the required phase sequence provided by the power supply module (2) to the gyroscope under test is detected by the phase sequence detection module (3) under the on / off control of the state switching module. The power indicator module (4) is used to indicate the status of the power supply module (2) in the pre-adjustment state or working state under the on / off switching of the state switching module.

2. The portable gyroscope testing box according to claim 1, characterized in that: The state switching module includes a power switching linkage switch (12). The three-phase AC terminals and DC positive terminals of the power supply module (2) are connected to the main power supply bus (13) or the detection power supply branch (14) through the power switching linkage switch (12).

3. The portable gyroscope testing box according to claim 2, characterized in that: The state switching module also includes a calibration / operation linkage switch (10) and a phase sequence linkage switch (11). The transformer assembly (5) includes transformer B1, transformer B2 and transformer B3. The output terminals of transformer B1, transformer B2 and transformer B3 are connected to the working power input terminal of the angle signal receiving and processing module (7). Each input terminal of transformer B1, transformer B2 and transformer B3 is connected to the main power supply bus (13) or the detection power supply branch (14) through the calibration / operation linkage switch (10), and provides the required working power to the angle signal receiving and processing module (7) under the on / off control of the calibration / operation linkage switch (10).

4. The portable gyroscope testing box according to claim 3, characterized in that: The pins G and H of the transformer B3 are connected to one end of the capacitor C2 via a fast / slow switching switch (15). The other end of the transformer B3 and the capacitor C2 are connected to one side of the reversing linkage switch (16). The other side of the reversing linkage switch (16) is connected to the corresponding interface of the 24-pin circular connector (6) via the linkage switch S7. The 24-pin circular connector (6) is connected to the C phase of the main power supply bus (13) via the on / off control switch S3 and the on / off control switch S4.

5. The portable gyroscope testing box according to claim 2, characterized in that: The state switching module also includes a phase sequence linkage switch (11). The phase sequence detection module (3) is connected to the corresponding three-phase AC phases of the main power supply bus (13) through the phase sequence linkage switch (11). The phase sequence detection module (3) includes a voltage divider resistor R6, a voltage divider resistor R9, a green light-emitting diode LED4, and a red light-emitting diode LED5. One end of the voltage divider resistor R6 is connected to the C phase of the main power supply bus (13) through the phase sequence linkage switch (11), and the other end of the voltage divider resistor R6 is simultaneously connected to the anode of the green light-emitting diode LED4. One end of the voltage divider resistor R9 is connected to the B phase of the main power supply bus (13) via a phase sequence linkage switch (11), and the other end of the voltage divider resistor R9 is simultaneously connected to the anode of the red light-emitting diode LED5 and one end of the resistor R8. The cathode of the green light-emitting diode LED4 and the other end of the resistor R7, as well as the cathode of the red light-emitting diode LED5 and the other end of the resistor R8, are connected to one end of the capacitor C1, and the other end of the capacitor C1 is connected to the A phase of the main power supply bus (13) via a phase sequence linkage switch (11).

6. The portable gyroscope testing box according to claim 2, characterized in that: The state switching module also includes a power indicator linkage switch S2. The power indicator module (4) includes LED1, LED2 and LED3. The two ends of LED1 are connected in parallel with the two ends of resistor R10, the two ends of LED2 are connected in parallel with the two ends of resistor R4 and the two ends of LED3 are connected in parallel with the two ends of resistor R5, forming three parallel sub-circuits with one end connected to the common power terminal. The parallel sub-circuits corresponding to LED1, LED2 and LED3 are respectively connected to the main power supply bus (13) and the detection power supply branch (14) via series current limiting resistors R1, R2 and R3 and the power indicator linkage switch S2 and the corresponding terminal contacts.

7. The portable gyroscope testing box according to claim 6, characterized in that: The state switching module also includes a linkage switch S1. The signal measurement module (8) includes an AC digital voltmeter V1, an AC digital voltmeter V2, an AC digital voltmeter V3, a DC digital voltmeter V+, an AC digital ammeter A1, an AC digital ammeter A2, an AC digital ammeter A3, and a DC digital ammeter A+. The pins 1 of the AC digital ammeters A1, A2, A3, and A+ are respectively connected to phase A, phase B, phase C, and the positive DC terminal of the main power supply bus (13). The pins 2 of the AC digital ammeters A1, A2, A3, and A+ are connected to a 24-pin circular connector (6) through the linkage switch S1. Pin 1 of digital voltmeter V1 is connected to pin 2 of AC digital voltmeter V3, pin 2 of AC digital voltmeter V1 is connected to pin 1 of AC digital voltmeter V2, and pin 2 of AC digital voltmeter V2 is connected to pin 1 of AC digital voltmeter V3. They are also connected to the corresponding terminals of linkage switch S1. Pin 1 of DC digital voltmeter V+ is connected to the corresponding terminals of linkage switch S1. Pin 5 of AC digital voltmeter V1, AC digital voltmeter V2, AC digital voltmeter V3, DC digital voltmeter V+, AC digital ammeter A1, AC digital ammeter A2, AC digital ammeter A3 and DC digital ammeter A+ are all connected to the DC positive terminal of power supply module (2) through power indication linkage switch S2 and power switching linkage switch (12).

8. The portable gyroscope testing box according to claim 2, characterized in that: The angle signal receiving and processing module (7) includes an angle receiver (7-1) and a DB15 connector (7-2). The angle receiver (7-1) is connected to the 24-pin circular connector (6), the transformer assembly (5), and the B and C phases of the main power supply bus (13) through the DB15 connector (7-2).

9. The portable gyroscope testing box according to claim 1, characterized in that: Pins 11 and 12 of the 24-pin circular connector (6) are connected to the DC positive terminal of the main power supply bus (13) via wires connected to switches S5 and S6, respectively. The other end of the skew status display module (9), which is connected to pin 16 of the 24-pin circular connector (6), is connected to the DC positive terminal of the main power supply bus (13) via a wire connected to switch S8.

10. The portable gyroscope testing box according to claim 9, characterized in that: The tilt state display module (9) includes a light-emitting diode LED6 and resistors R14 and R15. The anode of the light-emitting diode LED6 is connected to the output terminal of switch S8, and the resistor R15 connected in series with the light-emitting diode LED6 is connected to pin 16 of the 24-pin circular connector (6). The two ends of the resistor R14 are respectively connected to the output node of switch S8 and the connection node between the light-emitting diode LED6 and resistor R15.

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