Detection device for high angular velocity sensor and use method thereof

Abstract

The invention discloses a detection device for a high angular velocity sensor and a use method thereof, and relates to the technical field of angular velocity sensor testing. The detection device comprises a standard power supply, a digital multimeter, a computer, a turntable controller, an anti-interference cable, a high-speed turntable and a tested angular velocity sensor, the computer achieves automatic setting of the angular velocity through the rotary table controller, the digital multimeter automatically collects voltage data and transmits the voltage data to the computer, data processing can be automatic in the whole process, a wide angular velocity range can be covered, and rapid replacement of sensors of different models can be achieved through the adjustable sensor clamp. The standard power supply provides stable power supply, ensures output consistency during long-time high-rotation-speed operation, and is suitable for continuous detection of batch sensors. An anti-interference cable is adopted to transmit signals, and stable support of an air shock absorber and a marble platform is matched, so that the influence of electromagnetic interference and mechanical vibration on measurement is effectively reduced, and the signal-to-noise ratio of signals at a high rotating speed is ensured.

Description

Technical Field

[0001] This invention relates to the field of angular velocity sensor testing technology, and in particular to a measuring device for a high angular velocity sensor and its method of use. Background Technology

[0002] In high-end fields such as aerospace, precision manufacturing, and inertial navigation, high angular velocity sensors serve as core measurement components, and their accuracy directly determines the system's control performance and operational safety. With technological advancements, the requirements for dynamic response speed and measurement accuracy in high angular velocity scenarios are becoming increasingly stringent. Existing testing devices, such as ordinary turntables, struggle to stably output high angular velocities and cannot simulate extreme conditions. Signal transmission is susceptible to high-frequency electromagnetic interference, leading to a decrease in the sensor's output voltage signal-to-noise ratio. Traditional manual reading and data processing methods are inefficient, requiring several hours for a single calibration, making it difficult to meet batch testing needs. In short, there is currently no ideal measurement equipment for high angular velocity sensor testing; therefore, a new solution is urgently needed to address these issues. Summary of the Invention

[0003] To address the problem of the difficulty in accurately measuring high angular velocity sensors in existing technologies, this invention proposes a detection device and method for high angular velocity sensors.

[0004] The present invention adopts the following technical solution:

[0005] A detection device for a high angular velocity sensor includes a standard power supply, a digital multimeter, a computer, a turntable controller, anti-interference cables, a high-speed turntable, and the angular velocity sensor to be measured.

[0006] The standard power supply is connected to the high-speed turntable via the anti-interference cable, and the measured angular velocity sensor is connected to the high-speed turntable via the turntable.

[0007] The digital multimeter is connected to the high-speed turntable via an anti-interference cable, and is connected to the measured angular velocity sensor via the high-speed turntable. The digital multimeter is connected to a computer and is used to collect the output voltage value of the measured angular velocity sensor when it is working and transmit the voltage value to the computer.

[0008] The computer is connected to the turntable controller via a data cable, and the turntable controller is connected to the high-speed turntable via the anti-interference cable. The turntable controller is used to control the high-speed turntable to rotate at a set angular velocity, and the computer is used to collect the voltage value of the measured angular velocity sensor transmitted by the digital multimeter.

[0009] It also includes a sensor clamp for fixing the measured angular velocity sensor on the high-speed turntable.

[0010] The high-speed turntable is fixed on the marble platform.

[0011] The air shock absorber is installed under the marble platform.

[0012] The computer is used to analyze the voltage value output by the angular velocity sensor under test when it is working to obtain the true angular velocity value and output a test report. The test report includes at least the set angular velocity value and the true angular velocity value.

[0013] A method of using a detection device for a high angular velocity sensor as described above includes the following steps:

[0014] Step 1: Fix the angular velocity sensor to be measured onto the sensor fixture;

[0015] Step 2: Set the standard power supply to output DC voltage V and supply power to the angular velocity sensor under test through the anti-interference cable;

[0016] Step 3: The computer inputs a set angular velocity value and transmits it to the turntable controller via a data cable. The turntable controller controls the high-speed turntable to start working. When the high-speed turntable reaches the set angular velocity value, the measured angular velocity sensor rotates with the high-speed turntable and transmits a voltage value to the digital multimeter. The digital multimeter transmits the voltage value to the computer.

[0017] Step 4: Input the next set angular velocity value into the computer, and repeat Step 3 to obtain the next voltage value for the computer, until all angular velocity points to be detected are completed;

[0018] Step 5: The computer processes the obtained voltage value to obtain the actual angular velocity value and generates a detection report. The detection report includes at least the set angular velocity value and the actual angular velocity value.

[0019] The data processing includes the following steps:

[0020] S: Data acquisition;

[0021] For each angular velocity, perform 10 measurements and take the average output voltage.

[0022]

[0023] in:

[0024] V ij The raw value of the sensor output voltage acquired at the j-th time under the i-th angular velocity.

[0025] V i: The arithmetic mean of the original output voltage values ​​10 times at the i-th angular velocity;

[0026] S2: Establish a mathematical relationship model:

[0027] V = a·ω + b

[0028] in:

[0029] V: The average output voltage (V) of the measured angular velocity sensor.

[0030] ω: Standard angular velocity (° / s) of the high-speed turntable (7),

[0031] a: Sensitivity coefficient (V / (° / s))

[0032] b: Zero bias voltage (V);

[0033] S3: Linear regression fitting curve;

[0034] S31: Calculate the necessary statistics:

[0035]

[0036] in:

[0037] n: Number of data sets, here 10;

[0038] S ω All standard angular velocities ω i The sum,

[0039] S V : All average output voltages V i The sum,

[0040] S ωω All standard angular velocities ω i The sum of squares,

[0041] S ωV : All ω i With corresponding V i The sum of the products;

[0042] S32: Calculate the regression coefficients:

[0043]

[0044] Therefore, the fitting equation is obtained:

[0045] V = a·ω + b

[0046] S4: Derive the calibration formula;

[0047] Calculate the calibration coefficients:

[0048]

[0049] The formula for calibrating angular velocity is obtained as follows:

[0050] ω=k·V+c

[0051] in:

[0052] ω: The angular velocity value to be determined, in degrees per second (° / s);

[0053] V: The actual output voltage value measured by the angular velocity sensor under test, in volts (V);

[0054] K: Scale factor of the calibration formula, in degrees per second per volt ((° / s) / V);

[0055] c: Zero-point compensation value of the calibration formula, in degrees per second (° / s);

[0056] S5: Calculate the angular velocity value output by the angular velocity sensor;

[0057] After calibration, for any voltage value V output by the measured angular velocity sensor measure The corresponding angular velocity ω can be calculated by substituting it into the calibration formula. output :

[0058] ω output =k·V measure +c

[0059] This ω output This is the final, accurate angular velocity measurement.

[0060] The beneficial effects of this invention are as follows: The computer automatically sets the angular velocity via the turntable controller; the digital multimeter automatically collects voltage data and transmits it to the computer; data processing is fully automated and can cover a wide range of angular velocities; and adjustable sensor fixtures allow for quick switching between different sensor models. A standard power supply provides stable power, ensuring consistent output during prolonged high-speed operation, making it suitable for continuous testing of batches of sensors. The use of anti-interference cables for signal transmission, combined with air dampers and the stable support of a marble platform, effectively reduces the impact of electromagnetic interference and mechanical vibration on measurements, ensuring a high signal-to-noise ratio at high speeds. Attached Figure Description

[0061] Figure 1 This is a schematic diagram of the detection device for a high angular velocity sensor according to the present invention;

[0062] In the diagram: 1-Standard power supply, 2-Digital multimeter, 3-Computer, 4-Turntable controller, 5-Anti-interference cable, 6-Clip of the angular velocity sensor under test, 7-High-speed turntable, 8-Marble platform, 9-Air shock absorber, 10-Angular velocity sensor under test. Detailed Implementation

[0063] The present invention will now be described in detail with reference to the accompanying drawings.

[0064] like Figure 1 As shown, a detection device for a high angular velocity sensor includes a standard power supply 1, a digital multimeter 2, a computer 3, a turntable controller 4, an anti-interference cable 5, a high-speed turntable 7, and the angular velocity sensor to be measured 10.

[0065] The standard power supply 1 is connected to the high-speed turntable 7 through the anti-interference cable 5, and is connected to the angular velocity sensor 10 installed on the high-speed turntable 7.

[0066] The digital multimeter 2 is connected to the high-speed turntable 7 via the anti-interference cable 5, and is connected to the measured angular velocity sensor 10 via the high-speed turntable 7. The digital multimeter 2 is connected to the computer 3. The digital multimeter 2 is used to collect the output voltage value of the measured angular velocity sensor 10 when it is working and transmit the voltage value to the computer 3.

[0067] The computer 3 is connected to the turntable controller 4 via a data cable. The turntable controller 4 is connected to the high-speed turntable 7 via the anti-interference cable 5. The turntable controller 4 is used to control the high-speed turntable 7 to rotate at a set angular velocity. The computer 3 is used to collect the voltage value of the measured angular velocity sensor 10 transmitted by the digital multimeter 2.

[0068] It also includes a sensor clamp 6, which is used to fix the measured angular velocity sensor 10 on the high-speed turntable 7.

[0069] The high-speed turntable 7 is fixed on the marble platform 8.

[0070] The air shock absorber 9 is installed under the marble platform 8.

[0071] The computer 3 is used to analyze the voltage value output by the measured angular velocity sensor 10 when it is working to obtain the true angular velocity value and output a detection report. The detection report includes at least the set angular velocity value and the true angular velocity value.

[0072] Computer 3 automatically sets the angular velocity through turntable controller 4, digital multimeter 2 automatically collects voltage data and transmits it to computer 3, data processing is fully automated, can cover a wide range of angular velocity measurements, and can quickly change different types of sensors through adjustable sensor fixtures.

[0073] The standard power supply provides stable power, ensuring consistent output during long-term high-speed operation, making it suitable for continuous detection of batches of sensors.

[0074] A high-speed turntable 7 provides a precise angular velocity reference, and a digital multimeter 2 is used to collect voltage signals, which can control the detection error within 0.001%, meeting the high-precision calibration requirements of high angular velocity sensors. Anti-interference cables 5 are used for signal transmission, and with the stable support of air dampers 9 and a marble platform 8, the impact of electromagnetic interference and mechanical vibration on the measurement is effectively reduced, ensuring a high signal-to-noise ratio at high speeds.

[0075] A method of using the detection device for a high angular velocity sensor as described above includes the following steps:

[0076] Step 1: Fix the angular velocity sensor 10 to be measured onto the sensor clamp 6;

[0077] Step 2: Set the standard power supply 1 to output 5V DC voltage and supply power to the measured angular velocity sensor 10 through the anti-interference cable 5;

[0078] Step 3: The computer 3 inputs a set angular velocity value and transmits it to the turntable controller 4 via a data cable. The turntable controller 4 controls the high-speed turntable 7 to start working. When the high-speed turntable 7 reaches the set angular velocity value, the measured angular velocity sensor 10 rotates with the high-speed turntable 7 and transmits a voltage value to the digital multimeter 2. The digital multimeter 2 transmits the voltage value to the computer 3.

[0079] Step 4: Input the next set angular velocity value through the computer 3, and repeat Step 3 to make the computer 3 obtain the next voltage value until all the angular velocity points to be detected are completed;

[0080] Step 5: The computer 3 processes the obtained voltage value to obtain the actual angular velocity value and generates a detection report. The detection report includes at least the set angular velocity value and the actual angular velocity value.

[0081] 7. The method of using the detection device for a high angular velocity sensor according to claim 6, wherein the data processing includes the following steps:

[0082] S1: Data Acquisition

[0083] For each angular velocity, perform 10 measurements and take the average output voltage.

[0084]

[0085] in:

[0086] V ij : The original value of the sensor output voltage acquired at the j-th time under the i-th angular velocity.

[0087] V i : The arithmetic mean of the original output voltage values ​​10 times at the i-th angular velocity.

[0088] S2: Establish a mathematical relationship model:

[0089] V = a·ω + b

[0090] in:

[0091] V: Average output voltage (V) of the measured angular velocity sensor 10;

[0092] ω: Standard angular velocity (° / s) of the high-speed turntable;

[0093] a: Sensitivity coefficient (V / (° / s));

[0094] b: Zero bias voltage (V).

[0095] S3: Linear regression fitting curve;

[0096] S31: Calculate the necessary statistics:

[0097]

[0098] in:

[0099] n: Number of data sets, here 10;

[0100] S ω All standard angular velocities ω i The sum;

[0101] S V : All average output voltages V i The sum;

[0102] S ωω All standard angular velocities ω i The sum of squares;

[0103] S ωV : All ω i With corresponding V i The sum of the products of .

[0104] S32: Calculate the regression coefficients:

[0105]

[0106] Therefore, the fitting equation is obtained:

[0107] V=a·ω+b S4: Derivation of the calibration formula

[0108] Calculate the calibration coefficients:

[0109]

[0110] The formula for calibrating angular velocity is obtained as follows:

[0111] ω=k·V+c

[0112] in:

[0113] ω: The angular velocity value to be determined, in degrees per second (° / s);

[0114] V: The actual output voltage value measured by the measured angular velocity sensor 10, in volts (V); K: The scaling factor of the calibration formula, in degrees per second per volt ((° / s) / V);

[0115] c: Zero-point compensation value of the calibration formula, in degrees per second (° / s).

[0116] S5: Calculate the angular velocity value output by the angular velocity sensor;

[0117] After calibration, for any voltage value output by the measured angular velocity sensor 10

[0118] V measure The corresponding angular velocity ω can be calculated by substituting it into the calibration formula. output :

[0119] ω output =k·V measure +c

[0120] This ω output This is the final, accurate angular velocity measurement.

[0121] In this embodiment, 10 measurements are performed for each angular velocity group, and the average value is taken to reduce random errors. The calibration formula derived based on the linear regression model can be directly used for accuracy correction during actual measurements, ensuring data accuracy in subsequent applications. The test report allows staff to intuitively understand the accuracy of the tested angular velocity sensor 10.

[0122] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A detection device for a high angular rate sensor, characterized in that: It includes a standard power supply (1), a digital multimeter (2), a computer (3), a turntable controller (4), an anti-interference cable (5), a high-speed turntable (7) and a measured angular velocity sensor (10); The standard power supply (1) is connected to the high-speed turntable (7) through the anti-interference cable (5), and the measured angular velocity sensor (10) arranged thereon is connected through the high-speed turntable (7); The digital multimeter (2) is connected to the high-speed turntable (7) through the anti-interference cable (5), and the measured angular velocity sensor (10) is connected through the high-speed turntable (7), the digital multimeter (2) is connected to the computer (3), and the digital multimeter (2) is used to collect the output voltage value of the measured angular velocity sensor (10) when it works and transmit the voltage value to the computer (3); The computer (3) is connected to the turntable controller (4) through a data line, the turntable controller (4) is connected to the high-speed turntable (7) through the anti-interference cable (5), and the turntable controller (4) is used to control the high-speed turntable (7) to rotate at a set angular velocity, and the computer (3) is used to collect the voltage value of the measured angular velocity sensor (10) transmitted by the digital multimeter (2).

2. A detection device for a high angular velocity sensor according to claim 1, characterized in that: It also includes a sensor clamp (6) for fixing the measured angular velocity sensor (10) on the high-speed turntable (7).

3. A detection device for a high angular velocity sensor according to claim 1, characterized in that: The high-speed turntable (7) is fixed on the marble platform (8).

4. A detection device for a high angular velocity sensor according to claim 1, characterized in that: The marble platform (8) is provided with an air shock absorber (9) below.

5. A detection device for a high angular velocity sensor according to claim 1, characterized in that: The computer (3) is used to analyze the voltage value output by the measured angular velocity sensor (10) to obtain the real angular velocity value and output a detection report, and the detection report at least includes the set angular velocity value and the real angular velocity value.

6. A method of using a detection device for a high angular velocity sensor as claimed in claims 1-5, characterized in that, The method comprises the following steps: Step one, fix the measured angular velocity sensor (10) on the sensor clamp (6); Step two, set the standard power supply (1) to output 5V DC voltage and power the measured angular velocity sensor (10) through the anti-interference cable (5); Step three, the computer (3) inputs a set angular velocity value and transmits it to the turntable controller (4) through a data line, the turntable controller (4) controls the high-speed turntable (7) to start working, when the high-speed turntable (7) reaches the set angular velocity value, the measured angular velocity sensor (10) rotates with the high-speed turntable (7) and transmits a voltage value to the digital multimeter (2), and the digital multimeter (2) transmits the voltage value to the computer (3); Step four, input the next set angular velocity value through the computer (3), repeat step three, so that the computer (3) obtains the next voltage value, until all the angular velocity points to be detected are completed; Step five, the computer (3) processes the obtained voltage value to obtain the real angular velocity value and generates a detection report, and the detection report at least includes the set angular velocity value and the real angular velocity value.

7. The method for using the detection device for high angular velocity sensor according to claim 6, the data processing comprises the following steps: S1: data acquisition; Take the average of output voltage for 10 measurements for each angular velocity: Wherein: V ij : raw sensor output voltage value collected at the ith angular velocity for the jth acquisition; V i : arithmetic average of 10 output voltage raw values at the i-th angular velocity; S2: establish a mathematical relationship model; V = a · ω + b Wherein: V: the average of output voltage of the measured angular velocity sensor (10) (V); ω: the standard angular velocity of the high-speed rotary table (7) (° / s); a: the sensitivity coefficient (V / (° / s)); b: the zero voltage (V); S3: linear regression fitting curve; S31: calculate the necessary statistics: Wherein: n: number of data sets, here 10, S ω : sum of all standard angular velocities ω i , S V : sum of all average output voltages V i , S ωω : sum of squares of all standard angular velocities ω i , S ωV : sum of all ω i times the corresponding V i ; S32: calculate the regression coefficient; Thus the fitting equation is: V = a · ω + b; S4: derive the calibration formula; Calculate the calibration coefficient: Get the calibration formula of angular velocity: ω = k · V + c Wherein: ω: the angular velocity value to be solved, unit degree per second (° / s), V: the actual measured output voltage value of the measured angular velocity sensor (10), unit volt (V), K: the scale factor of the calibration formula, unit degree per second per volt ((° / s) / V), c: the zero compensation value of the calibration formula, unit degree per second (° / s); S5: calculate the angular velocity value output by the angular velocity sensor; After the calibration is completed, for any voltage value V measure output by the measured angular velocity sensor (10) output , the corresponding angular velocity value ω output can be calculated by substituting the calibration formula ω output = k · V measure + c This ω output That is the true angular velocity value.

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