CN212674956U - Helicopter revolution speed sensor detects calibrating device - Google Patents
Helicopter revolution speed sensor detects calibrating device Download PDFInfo
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- CN212674956U CN212674956U CN202021604453.2U CN202021604453U CN212674956U CN 212674956 U CN212674956 U CN 212674956U CN 202021604453 U CN202021604453 U CN 202021604453U CN 212674956 U CN212674956 U CN 212674956U
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Abstract
The utility model discloses a helicopter speed sensor detects calibrating device, including the bottom plate, the last fixed surface of bottom plate is connected with the motor frame, and servo motor is installed through the motor frame in the upper portion of bottom plate, servo motor's output shaft fixedly connected with magnetic grid dish, and servo motor is connected with servo controller through the wire, and servo controller and computer coupling, the upper surface of bottom plate is opened there are two spouts, installs the slider in the spout, is connected with drive assembly on the slider. The detection and calibration device for the helicopter speed sensor is calibrated by adopting a comparison method, the rotating speed detected by a standard speed sensor is compared with the rotating speed detected by a calibrated speed sensor, and a data difference is obtained by using the accurate analysis of a computer and the comparison, so that the precision of the calibrated speed sensor at different rotating speeds can be detected; the whole outside of this detection calibrating device is provided with translucent cover and handle, can remove in a flexible way, has avoided using large-scale check out test set to appear not being convenient for carry the problem that detects.
Description
Technical Field
The utility model relates to a speed sensor calibration technical field specifically is a helicopter speed sensor detects calibrating device.
Background
In a helicopter use unit, a crew member usually uses a tachometer and a tachometer sensor to measure the rotation speed of a helicopter rotor, a tail rotor and an engine, and it is very critical to calibrate the rotating speed type equipment regularly. Through investigation, the rotating speed range measured by the calibrated rotating speed sensor is 170 r/min-3665 r/min, the maximum allowable error is +/-1%, the rotating speed range is divided into a photoelectric type and a magnetoelectric type, and two difficulties exist in high-accuracy calibration of the rotating speed sensor: firstly, it is difficult to generate a high-accuracy standard rotation speed signal. The control modes of the current common standard rotating speed generator comprise three types of position control, speed control and torque control, three types of expanded position/speed switching control, speed/torque switching control and torque/position switching control, and the common control modes are not ideal due to high requirement on the accuracy of a standard rotating speed signal. Secondly, the design and selection of the signal processing method of the calibrated rotating speed sensor are difficult. The corrected rotating speed sensor has two types of photoelectric type and magnetoelectric type, the two types of sensors (including an eddy current type rotating speed sensor and the like) generate and receive pulse signals, and the pulse signals have three processing modes of a cycle measuring method, a frequency measuring method and a continuous cycle measuring method. The frequency measurement method has good effect under the condition of high rotating speed, and how to reasonably adopt the three methods has the difficulty of ensuring that the good calibration effect is obtained within the rotating speed range of 150 r/min-5000 r/min. In order to obtain higher rotational speed control accuracy, a communication speed control mode is selected in the design of a standard rotational speed control system. In the design of signal processing mode selection of the corrected rotation speed sensor, three signal processing modes are combined, a cycle measuring method and a continuous cycle measuring method are adopted for self-adaptation under the condition of low rotation speed, and a frequency measuring method is adopted under the condition of high rotation speed, so that the accuracy in the whole rotation speed range of 150 r/min-5000 r/min is improved. The uncertainty of the calibration device of the rotation speed sensor reaches 1 multiplied by 10-42 hours of rotational speed stability of 1X 10-5。
At present, an absolute calibration method is mostly adopted for calibration of the rotating speed sensor, basic physical quantities such as length, time, frequency, voltage and quality can be directly traced to by the rotating speed value calibrated by the absolute method and characteristic parameters of the sensor, and although the absolute calibration method is adopted for detection equipment, the accuracy is high, the investment of required expenses is large, the calibration process is complex, and meanwhile, the whole structure is complex and large, and the outdoor maintenance and carrying are inconvenient.
Therefore, a helicopter speed sensor detection and calibration device is developed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a helicopter speed sensor detects calibrating device to solve the problem that exists among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a helicopter speed sensor detection and calibration device comprises a bottom plate, wherein the upper surface of the bottom plate is fixedly connected with a motor frame, the upper part of the bottom plate is provided with a servo motor through the motor frame, an output shaft of the servo motor is fixedly connected with a magnetic grid disc, the servo motor is connected with a servo controller through a lead, and the servo controller is coupled with a computer; the upper surface of bottom plate is opened there are two spouts, and the inside sliding connection of every spout has the slider, and the last fixed surface of every slider all is connected with a movable support, and two movable supports joint respectively have standard tachometric transducer and by calibration tachometric transducer, and standard tachometric transducer and by calibration tachometric transducer have standard tachometric display table and by calibration tachometric display table through cable connection respectively, standard tachometric display table and by the coupling of calibration tachometric display table all with data acquisition card, and data acquisition card and computer coupling.
Preferably, a driving assembly for driving the standard rotating speed sensor and the calibrated rotating speed sensor to move left and right is rotatably connected to the right side of one of the sliding blocks. The spout right-hand member extends to the right-hand member face of bottom plate right, and the right-hand member face fixed mounting of bottom plate has the nut, drive assembly includes the inner loop of nut drive bolt of threaded connection, drive bolt's left end extends to the inside of spout to rotate with the right side of slider and be connected, drive bolt's right-hand member fixedly connected with adjustment handle.
Preferably, the upper surface of the left side of the bottom plate is fixedly connected with a displacement sensor, the movable detection end of the displacement sensor is fixedly connected with the movable support, and the displacement sensor is coupled with a computer.
Preferably, the magnetic grid disc is a speed measuring gear, the two moving supports are fixedly connected with a connecting rod, and the sensing ends of the standard rotating speed sensor and the calibrated rotating speed sensor clamped by the two moving supports correspond to the gear teeth of the speed measuring gear.
Preferably, the type of the servo controller is MR-J3-40A, the servo motor is HF-KP43 motor, and the type of the standard rotating speed sensor is SZMB-9 magnetoelectric standard rotating speed sensor.
Preferably, the standard rotating speed display meter is an XJP48T100 standard rotating speed display meter, a transparent cover is mounted on the upper surface of the base plate through bolts, and a handle is fixedly connected to the upper surface of the transparent cover.
The utility model provides a helicopter speed sensor detects calibrating device possesses following beneficial effect: this helicopter speed sensor detects calibrating device, adopt the comparison method calibration, the comparison method calibration is the standard speed sensor who selects one after the absolute method calibration as the reference, with by calibration speed sensor to same rotational speed, detect, the contrast, utilize the accurate analysis of computer, the contrast reachs the data difference, thereby make it detect out the difference value that exists between by calibration speed sensor and the standard speed sensor, final comparative analysis reachs the calibration result, this calibrating device use cost is low, calibration process is simple, and is swift, and convenient for operation, therefore the extensive application who obtains. This helicopter speed sensor detects calibrating device rotates the adjustment handle through setting up and comes synchronous adjustment standard speed sensor and by the distance of calibration speed sensor and magnetic grid dish to can get rid of apart from the factor interference, this detect the whole outside of calibrating device and be provided with translucent cover and handle, can remove in a flexible way, avoided using large-scale check out test set to appear not portable the phenomenon that detects.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure A-A in FIG. 1;
fig. 3 is a block diagram of the hardware components of the calibration device of the present invention;
fig. 4 is a schematic block diagram illustrating the calibration of the rotation speed sensor according to the present invention;
FIG. 5 is a circuit diagram of the rotation speed calibration unit.
In the figure: the device comprises a base plate 1, a motor frame 2, a servo motor 3, a magnetic grid disc 4, a sliding chute 5, a sliding block 6, a movable support 7, a standard rotating speed sensor 8, a calibrated rotating speed sensor 9, a connecting rod 10, a transparent cover 11, a nut 12, a driving bolt 13 and a displacement sensor 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-5, a helicopter speed sensor detection and calibration device comprises a base plate 1, a motor frame 2 is fixedly connected to the upper surface of the base plate 1, a servo motor 3 is installed on the upper portion of the base plate 1 through the motor frame 2, a magnetic grid disc 4 is fixedly connected to an output shaft of the servo motor 3, the servo motor 3 is connected with a servo controller through a lead, the servo controller is coupled with a computer, two sliding grooves 5 are formed in the upper surface of the base plate 1, a sliding block 6 is slidably connected inside each sliding groove 5, two movable supports 7 are fixedly connected to the upper surface of each sliding block 6, the two movable supports 7 are respectively connected with a standard speed sensor 8 and a calibrated speed sensor 9 in a clamping manner, the standard speed sensor 8 and the calibrated speed sensor 9 are respectively connected with a standard speed display meter and a calibrated speed display meter through cables, the standard rotating speed display meter and the calibrated rotating speed display meter are both coupled with a data acquisition card, and the data acquisition card is coupled with a computer.
A displacement sensor 14 is fixedly connected to the upper surface of the left side of the bottom plate 1, the movable detection end of the displacement sensor 14 is fixedly connected with a movable bracket 7 provided with a calibrated rotating speed sensor 9, and the displacement sensor 14 is coupled with a computer.
Be connected with on the right side by calibration speed sensor 9 below slider 6 and be used for driving standard speed sensor 8 and by the drive assembly who controls about calibration speed sensor 9, the right-hand member of spout 5 extends to bottom plate 1's right-hand member face right, bottom plate 1's right-hand member face fixed mounting has nut 12, drive assembly includes threaded connection at the drive bolt 13 of 12 inner rings of nut, the left end of drive bolt 13 extends to the inside of spout 5, and with by calibration speed sensor 9 below slider 6 right sides rotation connection, the right-hand member fixedly connected with adjustment handle of drive bolt 13.
The magnetic grid disc 4 is a speed measuring gear, the connecting rod 10 is fixedly connected between the two movable supports 7, the sensing ends of the standard rotating speed sensor 8 clamped by the two movable supports 7 and the calibrated rotating speed sensor 9 correspond to gear teeth of the speed measuring gear, the type of the servo controller is MR-J3-40A, the servo motor 3 is an HF-KP43 motor, the type of the standard rotating speed sensor 8 is SZMB-9 magnetoelectric standard rotating speed sensor, the type of the standard rotating speed display meter is an XJP48T100 standard rotating speed display instrument, the transparent cover 11 is installed on the upper surface of the bottom plate 1 through bolts, and the upper surface of the transparent cover 11 is fixedly connected with a lifting handle.
The working principle is as follows: when the helicopter speed sensor detection and calibration device is used for calibrating and detecting a speed sensor, the calibration process of the speed sensor can be seen according to a circuit connection diagram of a speed calibration unit in figure 5 shown in the specification, a computer is used for setting the rotating speed and the rising rate thereof, the frequency of power supply voltage is changed through an MR-J3-40A servo controller, so that the rotating speed of a rotating magnetic field of a servo motor 3 is changed, the servo motor 3 drives a speed measuring gear to rotate according to a standard rotating speed, the rotating speed of the speed measuring gear is measured by a standard speed sensor 8 and a calibrated speed sensor 9, a standard rotating speed value and a calibrated rotating speed value are measured, then the rotating speed values are compared, the calibration process is completed through the computer, the calibration device adopts a comparison method for calibration, the comparison method comprises the steps of selecting the standard speed sensor 8 calibrated by an absolute method as a reference and aiming at the magnetic grating disk 4 with the calibrated speed, carry out detection, contrast, utilize the accurate analysis of computer, the contrast reachs the data difference to make it detect out the difference value that exists between by calibration tachometric transducer 9 and the standard tachometric transducer 8, final comparative analysis reachs the calibration result, this calibrating device low in use cost, calibration process is simple, swift, convenient operation, therefore the extensive application that obtains.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A helicopter speed sensor detects calibrating device, includes bottom plate (1), its characterized in that: the upper surface of the bottom plate (1) is fixedly connected with a motor frame (2), the upper part of the bottom plate (1) is provided with a servo motor (3) through the motor frame (2), an output shaft of the servo motor (3) is fixedly connected with a magnetic grating disk (4), the servo motor (3) is connected with a servo controller through a lead, the servo controller is coupled with a computer, the upper surface of the bottom plate (1) is provided with two chutes (5), the inside of each chute (5) is connected with a slide block (6) in a sliding manner, the upper surface of each slide block (6) is fixedly connected with a movable support (7), the two movable supports (7) are respectively connected with a standard rotating speed sensor (8) and a calibrated rotating speed sensor (9) in a clamping manner, the standard rotating speed sensor (8) and the calibrated rotating speed sensor (9) are respectively connected with a standard rotating speed display meter and a calibrated rotating speed display meter, the standard rotating speed display meter and the calibrated rotating speed display meter are both coupled with a data acquisition card, the data acquisition card is coupled with a computer, and the right side of the sliding block (6) is connected with a driving component for driving the standard rotating speed sensor (8) and the calibrated rotating speed sensor (9) to move left and right.
2. A helicopter speed sensor detection calibration apparatus according to claim 1, further comprising: the right-hand member of spout (5) extends to the right-hand member face of bottom plate (1) right side, and the right-hand member face fixed mounting of bottom plate (1) has nut (12), drive assembly includes threaded connection at nut (12) inner ring drive bolt (13), the left end of drive bolt (13) extends to the inside of spout (5) to rotate with the right side of slider (6) and be connected, the right-hand member fixedly connected with adjustment handle of drive bolt (13).
3. A helicopter speed sensor detection calibration apparatus according to claim 1, further comprising: the upper surface of the left side of the bottom plate (1) is fixedly connected with a displacement sensor (14), the movable detection end of the displacement sensor (14) is fixedly connected with the movable support (7), and the displacement sensor (14) is coupled with a computer.
4. A helicopter speed sensor detection calibration apparatus according to claim 1, further comprising: the magnetic grid disc (4) is a speed measuring gear, the two connecting rods (10) are fixedly connected between the moving supports (7), and the two standard rotating speed sensors (8) clamped by the moving supports (7) correspond to the gear teeth of the speed measuring gear through the induction ends of the calibrated rotating speed sensors (9).
5. A helicopter speed sensor detection calibration apparatus according to claim 1, further comprising: the model of the servo controller is MR-J3-40A, the servo motor (3) is an HF-KP43 motor, and the model of the standard rotating speed sensor (8) is an SZMB-9 magnetoelectric standard rotating speed sensor.
6. A helicopter speed sensor detection calibration apparatus according to claim 1, further comprising: the standard rotating speed display meter is an XJP48T100 standard rotating speed display meter, a transparent cover (11) is installed on the upper surface of the bottom plate (1) through bolts, and a lifting handle is fixedly connected to the upper surface of the transparent cover (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021604453.2U CN212674956U (en) | 2020-08-05 | 2020-08-05 | Helicopter revolution speed sensor detects calibrating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021604453.2U CN212674956U (en) | 2020-08-05 | 2020-08-05 | Helicopter revolution speed sensor detects calibrating device |
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| CN212674956U true CN212674956U (en) | 2021-03-09 |
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| CN202021604453.2U Expired - Fee Related CN212674956U (en) | 2020-08-05 | 2020-08-05 | Helicopter revolution speed sensor detects calibrating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092823A (en) * | 2021-05-08 | 2021-07-09 | 中国计量科学研究院 | High-precision wide-range rotating speed generating device |
| CN113125805A (en) * | 2021-04-08 | 2021-07-16 | 河南省计量科学研究院 | Standard machine for calibrating moving speed detector of cross beam of testing machine |
| CN113484543A (en) * | 2021-08-10 | 2021-10-08 | 浙江省计量科学研究院 | Calibration system for rotating speed measuring instrument |
-
2020
- 2020-08-05 CN CN202021604453.2U patent/CN212674956U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113125805A (en) * | 2021-04-08 | 2021-07-16 | 河南省计量科学研究院 | Standard machine for calibrating moving speed detector of cross beam of testing machine |
| CN113092823A (en) * | 2021-05-08 | 2021-07-09 | 中国计量科学研究院 | High-precision wide-range rotating speed generating device |
| CN113484543A (en) * | 2021-08-10 | 2021-10-08 | 浙江省计量科学研究院 | Calibration system for rotating speed measuring instrument |
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| CF01 | Termination of patent right due to non-payment of annual fee |